# Settings Device

A device settings home screen with search, an account row and grouped rows with icons, toggles and details.

Settings Device is an open-source mobile screen from suiss/uim for React Native and Expo, with SwiftUI and Jetpack Compose versions built from the same design tokens. The @esuiss/uim CLI copies its source into your project, so you own the code.

Source: https://uim.suiss.app/docs/blocks/settings-device

![Preview](https://uim.suiss.app/previews/blocks-settings-device--default.light.webp)

```tsx title="uniwind/components/blocks/settings-device.tsx"
import { cn } from "cn"
import {
  AirplaneIcon,
  BellIcon,
  BluetoothIcon,
  CaretRightIcon,
  CellSignalFullIcon,
  GearIcon,
  HourglassIcon,
  MagnifyingGlassIcon,
  MoonIcon,
  type Icon as PhosphorIcon,
  SpeakerHighIcon,
  SunIcon,
  WifiHighIcon,
} from "phosphor-react-native"
import * as React from "react"
import { I18nManager, View } from "react-native"
import { Avatar, AvatarFallback } from "@/components/ui/avatar"
import {
  Header,
  HeaderLargeTitle,
  HeaderScrollView,
  HeaderTitle,
  useHeaderScroll,
} from "@/components/ui/header"
import { Icon } from "@/components/ui/icon"
import {
  InputGroup,
  InputGroupAddon,
  InputGroupInput,
} from "@/components/ui/input-group"
import {
  Item,
  ItemActions,
  ItemContent,
  ItemDescription,
  ItemGroup,
  ItemMedia,
  ItemSeparator,
  ItemTitle,
} from "@/components/ui/item"
import { Screen } from "@/components/ui/screen"
import { Switch } from "@/components/ui/switch"
import { Text } from "@/components/ui/text"

type Toggles = {
  airplane: boolean
  wifi: boolean
  bluetooth: boolean
  focus: boolean
}

type Row = {
  label: string
  icon: PhosphorIcon
  tint: string
  toggle?: keyof Toggles
  detail?: (toggles: Toggles) => string
}

const GROUPS: Row[][] = [
  [
    {
      label: "Airplane Mode",
      icon: AirplaneIcon,
      tint: "bg-orange",
      toggle: "airplane",
    },
    {
      label: "Wi-Fi",
      icon: WifiHighIcon,
      tint: "bg-blue",
      detail: (toggles) => (toggles.wifi ? "Home" : "Off"),
    },
    {
      label: "Bluetooth",
      icon: BluetoothIcon,
      tint: "bg-blue",
      detail: (toggles) => (toggles.bluetooth ? "On" : "Off"),
    },
    {
      label: "Cellular",
      icon: CellSignalFullIcon,
      tint: "bg-green",
      detail: (toggles) => (toggles.airplane ? "Off" : ""),
    },
  ],
  [
    { label: "Notifications", icon: BellIcon, tint: "bg-red" },
    { label: "Sounds & Haptics", icon: SpeakerHighIcon, tint: "bg-pink" },
    { label: "Focus", icon: MoonIcon, tint: "bg-indigo", toggle: "focus" },
    { label: "Screen Time", icon: HourglassIcon, tint: "bg-indigo" },
  ],
  [
    { label: "General", icon: GearIcon, tint: "bg-gray" },
    { label: "Display & Brightness", icon: SunIcon, tint: "bg-blue" },
  ],
]

const GROUP_CLASS = "bg-surface dark:bg-surface-secondary"

function Chevron() {
  return (
    <Icon
      as={CaretRightIcon}
      weight="bold"
      className={cn(
        "size-3.5 text-label-tertiary",
        I18nManager.isRTL && "rotate-180"
      )}
    />
  )
}

function SettingsDevice({
  onAccountPress,
  onRowPress,
}: {
  onAccountPress?: () => void
  onRowPress?: (label: string) => void
}) {
  const scroll = useHeaderScroll()
  const [query, setQuery] = React.useState("")
  const [toggles, setToggles] = React.useState<Toggles>({
    airplane: false,
    wifi: true,
    bluetooth: true,
    focus: false,
  })

  const setToggle = (key: keyof Toggles, value: boolean) =>
    setToggles((current) => ({
      ...current,
      [key]: value,
      ...(key === "airplane" && value ? { wifi: false, bluetooth: false } : {}),
    }))

  const matches = (label: string) =>
    !query || label.toLowerCase().includes(query.toLowerCase())
  const visible = GROUPS.map((rows) =>
    rows.filter((row) => matches(row.label))
  ).filter((rows): rows is [Row, ...Row[]] => rows.length > 0)

  return (
    <Screen
      variant="secondary"
      edges={["top", "right", "left"]}
      className="dark:bg-surface"
    >
      <Header scroll={scroll}>
        <HeaderTitle>Settings</HeaderTitle>
      </Header>
      <HeaderScrollView
        scroll={scroll}
        keyboardShouldPersistTaps="handled"
        keyboardDismissMode="on-drag"
      >
        <HeaderLargeTitle>Settings</HeaderLargeTitle>
        <View className="gap-4.5 px-4 pb-8">
          <InputGroup className="h-9 rounded-[0.625rem] dark:bg-surface-secondary">
            <InputGroupAddon>
              <Icon
                as={MagnifyingGlassIcon}
                weight="bold"
                className="size-4 text-label-secondary"
              />
            </InputGroupAddon>
            <InputGroupInput
              value={query}
              onChangeText={setQuery}
              placeholder="Search"
              accessibilityLabel="Search settings"
              returnKeyType="search"
              autoCorrect={false}
              clearButtonMode="while-editing"
              className="text-lg"
            />
          </InputGroup>
          {query ? null : (
            <ItemGroup variant="inset" className={GROUP_CLASS}>
              <Item
                size="sm"
                onPress={onAccountPress}
                className="gap-3.5 py-2.5"
              >
                <Avatar size="xl" className="size-14.5">
                  <AvatarFallback className="bg-indigo dark:bg-indigo">
                    <Text className="text-xl">JR</Text>
                  </AvatarFallback>
                </Avatar>
                <ItemContent className="gap-0.5">
                  <ItemTitle className="text-xl font-semibold">
                    Jamie Rivera
                  </ItemTitle>
                  <ItemDescription className="text-sm">
                    suiss Account, Cloud and more
                  </ItemDescription>
                </ItemContent>
                <Chevron />
              </Item>
            </ItemGroup>
          )}
          {visible.map((rows) => (
            <ItemGroup
              key={rows[0].label}
              variant="inset"
              className={GROUP_CLASS}
            >
              {rows.map((row, index) => {
                const detail = row.detail?.(toggles)
                const toggle = row.toggle
                return (
                  <React.Fragment key={row.label}>
                    {index > 0 ? <ItemSeparator className="ms-14.25" /> : null}
                    <Item
                      size="sm"
                      onPress={
                        toggle ? undefined : () => onRowPress?.(row.label)
                      }
                      className="min-h-11 gap-3.5 py-1.5"
                    >
                      <ItemMedia
                        className={cn("size-7.25 rounded-[7px]", row.tint)}
                      >
                        <Icon
                          as={row.icon}
                          weight="bold"
                          className="size-4.25 text-on-accent"
                        />
                      </ItemMedia>
                      <ItemContent>
                        <ItemTitle
                          nativeID={
                            toggle ? `settings-device-${toggle}` : undefined
                          }
                          className="font-normal"
                        >
                          {row.label}
                        </ItemTitle>
                      </ItemContent>
                      <ItemActions className="gap-1.5">
                        {toggle ? (
                          <Switch
                            checked={toggles[toggle]}
                            onCheckedChange={(value) =>
                              setToggle(toggle, value)
                            }
                            accessibilityLabelledBy={`settings-device-${toggle}`}
                          />
                        ) : (
                          <>
                            {detail ? <Text>{detail}</Text> : null}
                            <Chevron />
                          </>
                        )}
                      </ItemActions>
                    </Item>
                  </React.Fragment>
                )
              })}
            </ItemGroup>
          ))}
          {visible.length === 0 ? (
            <Text className="p-7.5 text-center text-base text-label-secondary">
              No Results
            </Text>
          ) : null}
        </View>
      </HeaderScrollView>
    </Screen>
  )
}

export { SettingsDevice }
```

```swift title="swift/Blocks/SettingsDevice.swift"
import PhosphorSwift
import SwiftUI

public struct SettingsDevice: View {
  struct Toggles: Equatable, Sendable {
    var airplane = false
    var wifi = true
    var bluetooth = true
    var focus = false
  }

  struct Row {
    let label: String
    let icon: Image
    let tint: Color
    var toggle: WritableKeyPath<Toggles, Bool>?
    var detail: ((Toggles) -> LocalizedStringKey?)?
  }

  static var groups: [[Row]] {
    [
      [
        Row(label: "Airplane Mode", icon: Ph.airplane.bold, tint: .orange, toggle: \.airplane),
        Row(label: "Wi-Fi", icon: Ph.wifiHigh.bold, tint: .blue, detail: { $0.wifi ? "Home" : "Off" }),
        Row(label: "Bluetooth", icon: Ph.bluetooth.bold, tint: .blue, detail: { $0.bluetooth ? "On" : "Off" }),
        Row(label: "Cellular", icon: Ph.cellSignalFull.bold, tint: .green, detail: { $0.airplane ? "Off" : nil }),
      ],
      [
        Row(label: "Notifications", icon: Ph.bell.bold, tint: .red),
        Row(label: "Sounds & Haptics", icon: Ph.speakerHigh.bold, tint: .pink),
        Row(label: "Focus", icon: Ph.moon.bold, tint: .indigo, toggle: \.focus),
        Row(label: "Screen Time", icon: Ph.hourglass.bold, tint: .indigo),
      ],
      [
        Row(label: "General", icon: Ph.gear.bold, tint: .gray),
        Row(label: "Display & Brightness", icon: Ph.sun.bold, tint: .blue),
      ],
    ]
  }

  private var onAccountPress: (() -> Void)?
  private var onRowPress: ((String) -> Void)?
  @State private var query: String
  @State private var toggles = Toggles()

  public init(onAccountPress: (() -> Void)? = nil, onRowPress: ((String) -> Void)? = nil) {
    self.init(query: "")
    self.onAccountPress = onAccountPress
    self.onRowPress = onRowPress
  }

  init(query: String) {
    _query = State(initialValue: query)
  }

  private var visible: [[Row]] {
    Self.groups
      .map { rows in rows.filter { query.isEmpty || $0.label.localizedCaseInsensitiveContains(query) } }
      .filter { !$0.isEmpty }
  }

  public var body: some View {
    Screen {
      HeaderScrollView {
        HeaderLargeTitle("Settings")
        VStack(spacing: 18) {
          InputGroup {
            InputGroupAddon {
              Ph.magnifyingGlass.bold.frame(width: 16, height: 16)
            }
            InputGroupInput("Search", text: $query)
              .submitLabel(.search)
              .accessibilityLabel(Text("Search settings"))
          }
          if query.isEmpty {
            ItemGroup(.inset) {
              Item(size: .sm, action: { onAccountPress?() }) {
                ItemMedia {
                  Avatar(size: .xl) {
                    Text(verbatim: "JR")
                      .scaledFont(.xl, weight: .semibold)
                      .foregroundStyle(Color.onAccent)
                      .frame(maxWidth: .infinity, maxHeight: .infinity)
                      .background(
                        Color.indigo,
                        in: Circle()
                      )
                  }
                  .frame(width: 58, height: 58)
                }
                ItemContent {
                  ItemTitle {
                    Text(verbatim: "Jamie Rivera")
                      .scaledFont(.xl, weight: .semibold)
                  }
                  ItemDescription("suiss Account, Cloud and more")
                }
                ItemActions {
                  SettingsDeviceChevron()
                }
              }
            }
          }
          ForEach(Array(visible.enumerated()), id: \.offset) { _, rows in
            ItemGroup(.inset) {
              ForEach(Array(rows.enumerated()), id: \.element.label) { index, row in
                if index > 0 {
                  Separator().padding(.leading, 57)
                }
                SettingsDeviceRow(row: row, toggles: $toggles, onPress: onRowPress)
              }
            }
          }
          if visible.isEmpty {
            Text("No Results")
              .scaledFont(.base)
              .foregroundStyle(Color.labelSecondary)
              .frame(maxWidth: .infinity)
              .padding(30)
          }
        }
        .padding(.horizontal, 16)
        .padding(.bottom, 24)
      } header: {
        Header {
          HeaderTitle("Settings")
        }
      }
    }
  }
}

private struct SettingsDeviceRow: View {
  let row: SettingsDevice.Row
  @Binding var toggles: SettingsDevice.Toggles
  let onPress: ((String) -> Void)?

  var body: some View {
    if let key = row.toggle {
      Item(size: .sm) {
        media
        ItemContent {
          ItemTitle {
            Text(LocalizedStringKey(row.label)).fontWeight(.regular)
          }
        }
        ItemActions {
          Toggle(isOn: binding(key)) { Text(LocalizedStringKey(row.label)) }
            .labelsHidden()
            .accessibilityLabel(Text(LocalizedStringKey(row.label)))
          .toggleStyle(SwitchStyle())
        }
      }
    } else {
      Item(size: .sm, action: { onPress?(row.label) }) {
        media
        ItemContent {
          ItemTitle {
            Text(LocalizedStringKey(row.label)).fontWeight(.regular)
          }
        }
        ItemActions {
          if let detail = row.detail?(toggles) {
            Text(detail)
              .scaledFont(.base)
              .foregroundStyle(Color.labelSecondary)
          }
          SettingsDeviceChevron()
        }
      }
    }
  }

  private var media: some View {
    ItemMedia {
      row.icon
        .frame(width: 17, height: 17)
        .foregroundStyle(Color.onAccent)
        .frame(width: 29, height: 29)
        .background(row.tint, in: RoundedRectangle(cornerRadius: Radius.md, style: .continuous))
    }
  }

  private func binding(_ key: WritableKeyPath<SettingsDevice.Toggles, Bool>) -> Binding<Bool> {
    Binding(
      get: { toggles[keyPath: key] },
      set: { value in
        toggles[keyPath: key] = value
        if key == \SettingsDevice.Toggles.airplane && value {
          toggles.wifi = false
          toggles.bluetooth = false
        }
      }
    )
  }
}

private struct SettingsDeviceChevron: View {
  var body: some View {
    Ph.caretRight.bold
      .frame(width: 14, height: 14)
      .foregroundStyle(Color.labelTertiary)
      .flipsForRightToLeftLayoutDirection(true)
      .accessibilityHidden(true)
  }
}
```

```kt title="kotlin/blocks/SettingsDevice.kt"
package com.esuiss.ui.blocks

import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.rememberScrollState
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.foundation.text.BasicText
import androidx.compose.foundation.verticalScroll
import androidx.compose.runtime.Composable
import androidx.compose.runtime.Immutable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.saveable.rememberSaveable
import androidx.compose.runtime.setValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.vector.ImageVector
import androidx.compose.ui.input.nestedscroll.nestedScroll
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.text.style.TextAlign
import androidx.compose.ui.unit.dp
import com.adamglin.PhosphorIcons
import com.adamglin.phosphoricons.Bold
import com.adamglin.phosphoricons.bold.Airplane
import com.adamglin.phosphoricons.bold.Bell
import com.adamglin.phosphoricons.bold.Bluetooth
import com.adamglin.phosphoricons.bold.CaretRight
import com.adamglin.phosphoricons.bold.CellSignalFull
import com.adamglin.phosphoricons.bold.Gear
import com.adamglin.phosphoricons.bold.Hourglass
import com.adamglin.phosphoricons.bold.MagnifyingGlass
import com.adamglin.phosphoricons.bold.Moon
import com.adamglin.phosphoricons.bold.SpeakerHigh
import com.adamglin.phosphoricons.bold.Sun
import com.adamglin.phosphoricons.bold.WifiHigh
import com.esuiss.ui.components.Avatar
import com.esuiss.ui.components.AvatarSize
import com.esuiss.ui.components.Header
import com.esuiss.ui.components.HeaderLargeTitle
import com.esuiss.ui.components.HeaderTitle
import com.esuiss.ui.components.Icon
import com.esuiss.ui.components.InputGroup
import com.esuiss.ui.components.InputGroupAddon
import com.esuiss.ui.components.InputGroupInput
import com.esuiss.ui.components.Item
import com.esuiss.ui.components.ItemActions
import com.esuiss.ui.components.ItemContent
import com.esuiss.ui.components.ItemDescription
import com.esuiss.ui.components.ItemGroup
import com.esuiss.ui.components.ItemGroupVariant
import com.esuiss.ui.components.ItemMedia
import com.esuiss.ui.components.ItemSeparator
import com.esuiss.ui.components.ItemSize
import com.esuiss.ui.components.ItemTitle
import com.esuiss.ui.components.Screen
import com.esuiss.ui.components.Switch
import com.esuiss.ui.components.rememberHeaderState
import com.esuiss.ui.theme.Colors
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.Typography

@Immutable
private data class DeviceToggles(
    val airplane: Boolean = false,
    val wifi: Boolean = true,
    val bluetooth: Boolean = true,
    val focus: Boolean = false,
)

private enum class ToggleKey { Airplane, Focus }

private class DeviceRow(
    val label: String,
    val icon: ImageVector,
    val tint: (Colors) -> Color,
    val toggle: ToggleKey? = null,
    val detail: ((DeviceToggles) -> String)? = null,
)

private val DeviceGroups = listOf(
    listOf(
        DeviceRow("Airplane Mode", PhosphorIcons.Bold.Airplane, { it.orange }, toggle = ToggleKey.Airplane),
        DeviceRow("Wi-Fi", PhosphorIcons.Bold.WifiHigh, { it.blue }, detail = { if (it.wifi) "Home" else "Off" }),
        DeviceRow("Bluetooth", PhosphorIcons.Bold.Bluetooth, { it.blue }, detail = { if (it.bluetooth) "On" else "Off" }),
        DeviceRow("Cellular", PhosphorIcons.Bold.CellSignalFull, { it.green }, detail = { if (it.airplane) "Off" else "" }),
    ),
    listOf(
        DeviceRow("Notifications", PhosphorIcons.Bold.Bell, { it.red }),
        DeviceRow("Sounds & Haptics", PhosphorIcons.Bold.SpeakerHigh, { it.pink }),
        DeviceRow("Focus", PhosphorIcons.Bold.Moon, { it.indigo }, toggle = ToggleKey.Focus),
        DeviceRow("Screen Time", PhosphorIcons.Bold.Hourglass, { it.indigo }),
    ),
    listOf(
        DeviceRow("General", PhosphorIcons.Bold.Gear, { it.gray }),
        DeviceRow("Display & Brightness", PhosphorIcons.Bold.Sun, { it.blue }),
    ),
)

@Composable
fun SettingsDevice(
    modifier: Modifier = Modifier,
    onAccountPress: () -> Unit = {},
    onRowPress: (label: String) -> Unit = {},
) {
    val colors = EsuissTheme.colors
    var query by rememberSaveable { mutableStateOf("") }
    var toggles by remember { mutableStateOf(DeviceToggles()) }
    val header = rememberHeaderState()

    fun setToggle(key: ToggleKey, value: Boolean) {
        toggles = when (key) {
            ToggleKey.Airplane -> if (value) toggles.copy(airplane = true, wifi = false, bluetooth = false) else toggles.copy(airplane = false)
            ToggleKey.Focus -> toggles.copy(focus = value)
        }
    }

    fun isOn(key: ToggleKey) = when (key) {
        ToggleKey.Airplane -> toggles.airplane
        ToggleKey.Focus -> toggles.focus
    }

    val visible = DeviceGroups
        .map { rows -> rows.filter { query.isBlank() || it.label.contains(query.trim(), ignoreCase = true) } }
        .filter { it.isNotEmpty() }

    Screen(modifier) {
        Column(
            Modifier
                .fillMaxSize()
                .nestedScroll(header.nestedScrollConnection),
        ) {
            Header(state = header) {
                HeaderTitle("Settings")
                HeaderLargeTitle("Settings")
            }
            Column(
                modifier = Modifier
                    .weight(1f)
                    .verticalScroll(rememberScrollState())
                    .padding(start = 16.dp, end = 16.dp, top = 4.dp, bottom = 24.dp),
                verticalArrangement = Arrangement.spacedBy(18.dp),
            ) {
                InputGroup {
                    InputGroupAddon {
                        Icon(PhosphorIcons.Bold.MagnifyingGlass, contentDescription = null)
                    }
                    InputGroupInput(value = query, onValueChange = { query = it }, placeholder = "Search")
                }
                if (query.isBlank()) {
                    ItemGroup(variant = ItemGroupVariant.Inset) {
                        Item(size = ItemSize.Sm, onClick = onAccountPress) {
                            Avatar(
                                modifier = Modifier.size(58.dp),
                                size = AvatarSize.Xl,
                                fallback = {
                                    Box(
                                        Modifier
                                            .fillMaxSize()
                                            .background(colors.indigo, CircleShape),
                                        contentAlignment = Alignment.Center,
                                    ) {
                                        BasicText("JR", style = Typography.xl.copy(color = colors.onAccent, fontWeight = FontWeight.SemiBold))
                                    }
                                },
                            )
                            ItemContent {
                                BasicText("Jamie Rivera", style = Typography.xl.copy(color = colors.label, fontWeight = FontWeight.SemiBold))
                                ItemDescription("suiss Account, Cloud and more")
                            }
                            ItemActions {
                                Icon(PhosphorIcons.Bold.CaretRight, contentDescription = null, size = 14.dp, tint = colors.labelTertiary)
                            }
                        }
                    }
                }
                visible.forEach { rows ->
                    ItemGroup(variant = ItemGroupVariant.Inset) {
                        rows.forEachIndexed { index, row ->
                            if (index > 0) ItemSeparator(Modifier.padding(start = 41.dp))
                            val toggle = row.toggle
                            Item(
                                size = ItemSize.Sm,
                                onClick = if (toggle == null) ({ onRowPress(row.label) }) else null,
                            ) {
                                ItemMedia(
                                    Modifier
                                        .size(29.dp)
                                        .background(row.tint(colors), RoundedCornerShape(7.dp)),
                                ) {
                                    Icon(row.icon, contentDescription = null, size = 17.dp, tint = colors.onAccent)
                                }
                                ItemContent {
                                    ItemTitle {
                                        BasicText(row.label, style = Typography.base.copy(color = colors.label), maxLines = 1)
                                    }
                                }
                                ItemActions {
                                    if (toggle != null) {
                                        Switch(checked = isOn(toggle), onCheckedChange = { setToggle(toggle, it) })
                                    } else {
                                        val detail = row.detail?.invoke(toggles).orEmpty()
                                        if (detail.isNotEmpty()) {
                                            BasicText(detail, style = Typography.base.copy(color = colors.labelSecondary))
                                        }
                                        Icon(PhosphorIcons.Bold.CaretRight, contentDescription = null, size = 14.dp, tint = colors.labelTertiary)
                                    }
                                }
                            }
                        }
                    }
                }
                if (visible.isEmpty()) {
                    BasicText(
                        "No Results",
                        modifier = Modifier
                            .fillMaxWidth()
                            .padding(30.dp),
                        style = Typography.base.copy(color = colors.labelSecondary, textAlign = TextAlign.Center),
                    )
                }
            }
        }
    }
}
```

A large-title `Header` sits over an `InputGroup` search field, an account `Item` with an `Avatar`, and inset `ItemGroup` lists of rows with tinted icons. Airplane Mode, Wi-Fi, Bluetooth and Focus use a `Switch`, and other rows show a detail value and a chevron. Typing filters the rows and shows a message when nothing matches.

## Installation

```bash title="Terminal"
npx @esuiss/uim@latest add settings-device
```

```bash title="Terminal"
npx @esuiss/uim@latest add settings-device --platform swift
```

```bash title="Terminal"
npx @esuiss/uim@latest add settings-device --platform kotlin
```

The CLI also adds what it builds on: [Avatar](/docs/components/avatar), [Header](/docs/components/header), [Icon](/docs/components/icon), [Input Group](/docs/components/input-group), [Item](/docs/components/item), [Screen](/docs/components/screen), [Switch](/docs/components/switch), [Text](/docs/components/text).

### Manual

**Uniwind**

1. Install the dependencies:

```bash title="Terminal"
npx expo install cn phosphor-react-native react-native-svg
```

2. Add the pieces it builds on: [Avatar](/docs/components/avatar), [Header](/docs/components/header), [Icon](/docs/components/icon), [Input Group](/docs/components/input-group), [Item](/docs/components/item), [Screen](/docs/components/screen), [Switch](/docs/components/switch), [Text](/docs/components/text).

3. Copy the source into `components/blocks/settings-device.tsx`:

```tsx title="uniwind/components/blocks/settings-device.tsx"
import { cn } from "cn"
import {
  AirplaneIcon,
  BellIcon,
  BluetoothIcon,
  CaretRightIcon,
  CellSignalFullIcon,
  GearIcon,
  HourglassIcon,
  MagnifyingGlassIcon,
  MoonIcon,
  type Icon as PhosphorIcon,
  SpeakerHighIcon,
  SunIcon,
  WifiHighIcon,
} from "phosphor-react-native"
import * as React from "react"
import { I18nManager, View } from "react-native"
import { Avatar, AvatarFallback } from "@/components/ui/avatar"
import {
  Header,
  HeaderLargeTitle,
  HeaderScrollView,
  HeaderTitle,
  useHeaderScroll,
} from "@/components/ui/header"
import { Icon } from "@/components/ui/icon"
import {
  InputGroup,
  InputGroupAddon,
  InputGroupInput,
} from "@/components/ui/input-group"
import {
  Item,
  ItemActions,
  ItemContent,
  ItemDescription,
  ItemGroup,
  ItemMedia,
  ItemSeparator,
  ItemTitle,
} from "@/components/ui/item"
import { Screen } from "@/components/ui/screen"
import { Switch } from "@/components/ui/switch"
import { Text } from "@/components/ui/text"

type Toggles = {
  airplane: boolean
  wifi: boolean
  bluetooth: boolean
  focus: boolean
}

type Row = {
  label: string
  icon: PhosphorIcon
  tint: string
  toggle?: keyof Toggles
  detail?: (toggles: Toggles) => string
}

const GROUPS: Row[][] = [
  [
    {
      label: "Airplane Mode",
      icon: AirplaneIcon,
      tint: "bg-orange",
      toggle: "airplane",
    },
    {
      label: "Wi-Fi",
      icon: WifiHighIcon,
      tint: "bg-blue",
      detail: (toggles) => (toggles.wifi ? "Home" : "Off"),
    },
    {
      label: "Bluetooth",
      icon: BluetoothIcon,
      tint: "bg-blue",
      detail: (toggles) => (toggles.bluetooth ? "On" : "Off"),
    },
    {
      label: "Cellular",
      icon: CellSignalFullIcon,
      tint: "bg-green",
      detail: (toggles) => (toggles.airplane ? "Off" : ""),
    },
  ],
  [
    { label: "Notifications", icon: BellIcon, tint: "bg-red" },
    { label: "Sounds & Haptics", icon: SpeakerHighIcon, tint: "bg-pink" },
    { label: "Focus", icon: MoonIcon, tint: "bg-indigo", toggle: "focus" },
    { label: "Screen Time", icon: HourglassIcon, tint: "bg-indigo" },
  ],
  [
    { label: "General", icon: GearIcon, tint: "bg-gray" },
    { label: "Display & Brightness", icon: SunIcon, tint: "bg-blue" },
  ],
]

const GROUP_CLASS = "bg-surface dark:bg-surface-secondary"

function Chevron() {
  return (
    <Icon
      as={CaretRightIcon}
      weight="bold"
      className={cn(
        "size-3.5 text-label-tertiary",
        I18nManager.isRTL && "rotate-180"
      )}
    />
  )
}

function SettingsDevice({
  onAccountPress,
  onRowPress,
}: {
  onAccountPress?: () => void
  onRowPress?: (label: string) => void
}) {
  const scroll = useHeaderScroll()
  const [query, setQuery] = React.useState("")
  const [toggles, setToggles] = React.useState<Toggles>({
    airplane: false,
    wifi: true,
    bluetooth: true,
    focus: false,
  })

  const setToggle = (key: keyof Toggles, value: boolean) =>
    setToggles((current) => ({
      ...current,
      [key]: value,
      ...(key === "airplane" && value ? { wifi: false, bluetooth: false } : {}),
    }))

  const matches = (label: string) =>
    !query || label.toLowerCase().includes(query.toLowerCase())
  const visible = GROUPS.map((rows) =>
    rows.filter((row) => matches(row.label))
  ).filter((rows): rows is [Row, ...Row[]] => rows.length > 0)

  return (
    <Screen
      variant="secondary"
      edges={["top", "right", "left"]}
      className="dark:bg-surface"
    >
      <Header scroll={scroll}>
        <HeaderTitle>Settings</HeaderTitle>
      </Header>
      <HeaderScrollView
        scroll={scroll}
        keyboardShouldPersistTaps="handled"
        keyboardDismissMode="on-drag"
      >
        <HeaderLargeTitle>Settings</HeaderLargeTitle>
        <View className="gap-4.5 px-4 pb-8">
          <InputGroup className="h-9 rounded-[0.625rem] dark:bg-surface-secondary">
            <InputGroupAddon>
              <Icon
                as={MagnifyingGlassIcon}
                weight="bold"
                className="size-4 text-label-secondary"
              />
            </InputGroupAddon>
            <InputGroupInput
              value={query}
              onChangeText={setQuery}
              placeholder="Search"
              accessibilityLabel="Search settings"
              returnKeyType="search"
              autoCorrect={false}
              clearButtonMode="while-editing"
              className="text-lg"
            />
          </InputGroup>
          {query ? null : (
            <ItemGroup variant="inset" className={GROUP_CLASS}>
              <Item
                size="sm"
                onPress={onAccountPress}
                className="gap-3.5 py-2.5"
              >
                <Avatar size="xl" className="size-14.5">
                  <AvatarFallback className="bg-indigo dark:bg-indigo">
                    <Text className="text-xl">JR</Text>
                  </AvatarFallback>
                </Avatar>
                <ItemContent className="gap-0.5">
                  <ItemTitle className="text-xl font-semibold">
                    Jamie Rivera
                  </ItemTitle>
                  <ItemDescription className="text-sm">
                    suiss Account, Cloud and more
                  </ItemDescription>
                </ItemContent>
                <Chevron />
              </Item>
            </ItemGroup>
          )}
          {visible.map((rows) => (
            <ItemGroup
              key={rows[0].label}
              variant="inset"
              className={GROUP_CLASS}
            >
              {rows.map((row, index) => {
                const detail = row.detail?.(toggles)
                const toggle = row.toggle
                return (
                  <React.Fragment key={row.label}>
                    {index > 0 ? <ItemSeparator className="ms-14.25" /> : null}
                    <Item
                      size="sm"
                      onPress={
                        toggle ? undefined : () => onRowPress?.(row.label)
                      }
                      className="min-h-11 gap-3.5 py-1.5"
                    >
                      <ItemMedia
                        className={cn("size-7.25 rounded-[7px]", row.tint)}
                      >
                        <Icon
                          as={row.icon}
                          weight="bold"
                          className="size-4.25 text-on-accent"
                        />
                      </ItemMedia>
                      <ItemContent>
                        <ItemTitle
                          nativeID={
                            toggle ? `settings-device-${toggle}` : undefined
                          }
                          className="font-normal"
                        >
                          {row.label}
                        </ItemTitle>
                      </ItemContent>
                      <ItemActions className="gap-1.5">
                        {toggle ? (
                          <Switch
                            checked={toggles[toggle]}
                            onCheckedChange={(value) =>
                              setToggle(toggle, value)
                            }
                            accessibilityLabelledBy={`settings-device-${toggle}`}
                          />
                        ) : (
                          <>
                            {detail ? <Text>{detail}</Text> : null}
                            <Chevron />
                          </>
                        )}
                      </ItemActions>
                    </Item>
                  </React.Fragment>
                )
              })}
            </ItemGroup>
          ))}
          {visible.length === 0 ? (
            <Text className="p-7.5 text-center text-base text-label-secondary">
              No Results
            </Text>
          ) : null}
        </View>
      </HeaderScrollView>
    </Screen>
  )
}

export { SettingsDevice }
```

4. Update the import paths to match your project.

**NativeWind**

1. Install the dependencies:

```bash title="Terminal"
npx expo install cn phosphor-react-native react-native-svg
```

2. Add the pieces it builds on: [Avatar](/docs/components/avatar), [Header](/docs/components/header), [Icon](/docs/components/icon), [Input Group](/docs/components/input-group), [Item](/docs/components/item), [Screen](/docs/components/screen), [Switch](/docs/components/switch), [Text](/docs/components/text).

3. Copy the source into `components/blocks/settings-device.tsx`:

```tsx title="nativewind/components/blocks/settings-device.tsx"
import { cn } from "cn"
import {
  AirplaneIcon,
  BellIcon,
  BluetoothIcon,
  CaretRightIcon,
  CellSignalFullIcon,
  GearIcon,
  HourglassIcon,
  MagnifyingGlassIcon,
  MoonIcon,
  type Icon as PhosphorIcon,
  SpeakerHighIcon,
  SunIcon,
  WifiHighIcon,
} from "phosphor-react-native"
import * as React from "react"
import { I18nManager, View } from "react-native"
import { Avatar, AvatarFallback } from "@/components/ui/avatar"
import {
  Header,
  HeaderLargeTitle,
  HeaderScrollView,
  HeaderTitle,
  useHeaderScroll,
} from "@/components/ui/header"
import { Icon } from "@/components/ui/icon"
import {
  InputGroup,
  InputGroupAddon,
  InputGroupInput,
} from "@/components/ui/input-group"
import {
  Item,
  ItemActions,
  ItemContent,
  ItemDescription,
  ItemGroup,
  ItemMedia,
  ItemSeparator,
  ItemTitle,
} from "@/components/ui/item"
import { Screen } from "@/components/ui/screen"
import { Switch } from "@/components/ui/switch"
import { Text } from "@/components/ui/text"

type Toggles = {
  airplane: boolean
  wifi: boolean
  bluetooth: boolean
  focus: boolean
}

type Row = {
  label: string
  icon: PhosphorIcon
  tint: string
  toggle?: keyof Toggles
  detail?: (toggles: Toggles) => string
}

const GROUPS: Row[][] = [
  [
    {
      label: "Airplane Mode",
      icon: AirplaneIcon,
      tint: "bg-orange",
      toggle: "airplane",
    },
    {
      label: "Wi-Fi",
      icon: WifiHighIcon,
      tint: "bg-blue",
      detail: (toggles) => (toggles.wifi ? "Home" : "Off"),
    },
    {
      label: "Bluetooth",
      icon: BluetoothIcon,
      tint: "bg-blue",
      detail: (toggles) => (toggles.bluetooth ? "On" : "Off"),
    },
    {
      label: "Cellular",
      icon: CellSignalFullIcon,
      tint: "bg-green",
      detail: (toggles) => (toggles.airplane ? "Off" : ""),
    },
  ],
  [
    { label: "Notifications", icon: BellIcon, tint: "bg-red" },
    { label: "Sounds & Haptics", icon: SpeakerHighIcon, tint: "bg-pink" },
    { label: "Focus", icon: MoonIcon, tint: "bg-indigo", toggle: "focus" },
    { label: "Screen Time", icon: HourglassIcon, tint: "bg-indigo" },
  ],
  [
    { label: "General", icon: GearIcon, tint: "bg-gray" },
    { label: "Display & Brightness", icon: SunIcon, tint: "bg-blue" },
  ],
]

const GROUP_CLASS = "bg-surface dark:bg-surface-secondary"

function Chevron() {
  return (
    <Icon
      as={CaretRightIcon}
      weight="bold"
      className={cn(
        "size-3.5 text-label-tertiary",
        I18nManager.isRTL && "rotate-180"
      )}
    />
  )
}

function SettingsDevice({
  onAccountPress,
  onRowPress,
}: {
  onAccountPress?: () => void
  onRowPress?: (label: string) => void
}) {
  const scroll = useHeaderScroll()
  const [query, setQuery] = React.useState("")
  const [toggles, setToggles] = React.useState<Toggles>({
    airplane: false,
    wifi: true,
    bluetooth: true,
    focus: false,
  })

  const setToggle = (key: keyof Toggles, value: boolean) =>
    setToggles((current) => ({
      ...current,
      [key]: value,
      ...(key === "airplane" && value ? { wifi: false, bluetooth: false } : {}),
    }))

  const matches = (label: string) =>
    !query || label.toLowerCase().includes(query.toLowerCase())
  const visible = GROUPS.map((rows) =>
    rows.filter((row) => matches(row.label))
  ).filter((rows): rows is [Row, ...Row[]] => rows.length > 0)

  return (
    <Screen
      variant="secondary"
      edges={["top", "right", "left"]}
      className="dark:bg-surface"
    >
      <Header scroll={scroll}>
        <HeaderTitle>Settings</HeaderTitle>
      </Header>
      <HeaderScrollView
        scroll={scroll}
        keyboardShouldPersistTaps="handled"
        keyboardDismissMode="on-drag"
      >
        <HeaderLargeTitle>Settings</HeaderLargeTitle>
        <View className="gap-[1.125rem] px-4 pb-8">
          <InputGroup className="h-9 rounded-[0.625rem] dark:bg-surface-secondary">
            <InputGroupAddon>
              <Icon
                as={MagnifyingGlassIcon}
                weight="bold"
                className="size-4 text-label-secondary"
              />
            </InputGroupAddon>
            <InputGroupInput
              value={query}
              onChangeText={setQuery}
              placeholder="Search"
              accessibilityLabel="Search settings"
              returnKeyType="search"
              autoCorrect={false}
              clearButtonMode="while-editing"
              className="text-lg"
            />
          </InputGroup>
          {query ? null : (
            <ItemGroup variant="inset" className={GROUP_CLASS}>
              <Item
                size="sm"
                onPress={onAccountPress}
                className="gap-3.5 py-2.5"
              >
                <Avatar size="xl" className="size-[3.625rem]">
                  <AvatarFallback className="bg-indigo dark:bg-indigo">
                    <Text className="text-xl">JR</Text>
                  </AvatarFallback>
                </Avatar>
                <ItemContent className="gap-0.5">
                  <ItemTitle className="text-xl font-semibold">
                    Jamie Rivera
                  </ItemTitle>
                  <ItemDescription className="text-sm">
                    suiss Account, Cloud and more
                  </ItemDescription>
                </ItemContent>
                <Chevron />
              </Item>
            </ItemGroup>
          )}
          {visible.map((rows) => (
            <ItemGroup
              key={rows[0].label}
              variant="inset"
              className={GROUP_CLASS}
            >
              {rows.map((row, index) => {
                const detail = row.detail?.(toggles)
                const toggle = row.toggle
                return (
                  <React.Fragment key={row.label}>
                    {index > 0 ? (
                      <ItemSeparator className="ms-[3.5625rem]" />
                    ) : null}
                    <Item
                      size="sm"
                      onPress={
                        toggle ? undefined : () => onRowPress?.(row.label)
                      }
                      className="min-h-11 gap-3.5 py-1.5"
                    >
                      <ItemMedia
                        className={cn(
                          "size-[1.8125rem] rounded-[7px]",
                          row.tint
                        )}
                      >
                        <Icon
                          as={row.icon}
                          weight="bold"
                          className="size-[1.0625rem] text-on-accent"
                        />
                      </ItemMedia>
                      <ItemContent>
                        <ItemTitle
                          nativeID={
                            toggle ? `settings-device-${toggle}` : undefined
                          }
                          className="font-normal"
                        >
                          {row.label}
                        </ItemTitle>
                      </ItemContent>
                      <ItemActions className="gap-1.5">
                        {toggle ? (
                          <Switch
                            checked={toggles[toggle]}
                            onCheckedChange={(value) =>
                              setToggle(toggle, value)
                            }
                            accessibilityLabelledBy={`settings-device-${toggle}`}
                          />
                        ) : (
                          <>
                            {detail ? <Text>{detail}</Text> : null}
                            <Chevron />
                          </>
                        )}
                      </ItemActions>
                    </Item>
                  </React.Fragment>
                )
              })}
            </ItemGroup>
          ))}
          {visible.length === 0 ? (
            <Text className="p-[1.875rem] text-center text-base text-label-secondary">
              No Results
            </Text>
          ) : null}
        </View>
      </HeaderScrollView>
    </Screen>
  )
}

export { SettingsDevice }
```

4. Update the import paths to match your project.

**StyleSheet**

1. Install the dependencies:

```bash title="Terminal"
npx expo install phosphor-react-native react-native-svg
```

2. Add the pieces it builds on: [Avatar](/docs/components/avatar), [Header](/docs/components/header), [Icon](/docs/components/icon), [Input Group](/docs/components/input-group), [Item](/docs/components/item), [Screen](/docs/components/screen), [Switch](/docs/components/switch), [Text](/docs/components/text).

3. Copy the source into `components/blocks/settings-device.tsx`:

```tsx title="stylesheet/components/blocks/settings-device.tsx"
import {
  AirplaneIcon,
  BellIcon,
  BluetoothIcon,
  CaretRightIcon,
  CellSignalFullIcon,
  GearIcon,
  HourglassIcon,
  MagnifyingGlassIcon,
  MoonIcon,
  type Icon as PhosphorIcon,
  SpeakerHighIcon,
  SunIcon,
  WifiHighIcon,
} from "phosphor-react-native"
import * as React from "react"
import { I18nManager, StyleSheet, View } from "react-native"
import { Avatar, AvatarFallback } from "@/components/ui/avatar"
import {
  Header,
  HeaderLargeTitle,
  HeaderScrollView,
  HeaderTitle,
  useHeaderScroll,
} from "@/components/ui/header"
import { Icon } from "@/components/ui/icon"
import {
  InputGroup,
  InputGroupAddon,
  InputGroupInput,
} from "@/components/ui/input-group"
import {
  Item,
  ItemActions,
  ItemContent,
  ItemDescription,
  ItemGroup,
  ItemMedia,
  ItemSeparator,
  ItemTitle,
} from "@/components/ui/item"
import { Screen } from "@/components/ui/screen"
import { Switch } from "@/components/ui/switch"
import { Text } from "@/components/ui/text"
import { fontSize, type ThemeColors, useTheme } from "@/components/ui/theme"

type Toggles = {
  airplane: boolean
  wifi: boolean
  bluetooth: boolean
  focus: boolean
}

type Row = {
  label: string
  icon: PhosphorIcon
  tint: keyof ThemeColors
  toggle?: keyof Toggles
  detail?: (toggles: Toggles) => string
}

const GROUPS: Row[][] = [
  [
    {
      label: "Airplane Mode",
      icon: AirplaneIcon,
      tint: "orange",
      toggle: "airplane",
    },
    {
      label: "Wi-Fi",
      icon: WifiHighIcon,
      tint: "blue",
      detail: (toggles) => (toggles.wifi ? "Home" : "Off"),
    },
    {
      label: "Bluetooth",
      icon: BluetoothIcon,
      tint: "blue",
      detail: (toggles) => (toggles.bluetooth ? "On" : "Off"),
    },
    {
      label: "Cellular",
      icon: CellSignalFullIcon,
      tint: "green",
      detail: (toggles) => (toggles.airplane ? "Off" : ""),
    },
  ],
  [
    { label: "Notifications", icon: BellIcon, tint: "red" },
    { label: "Sounds & Haptics", icon: SpeakerHighIcon, tint: "pink" },
    { label: "Focus", icon: MoonIcon, tint: "indigo", toggle: "focus" },
    { label: "Screen Time", icon: HourglassIcon, tint: "indigo" },
  ],
  [
    { label: "General", icon: GearIcon, tint: "gray" },
    { label: "Display & Brightness", icon: SunIcon, tint: "blue" },
  ],
]

const styles = StyleSheet.create({
  body: { gap: 18, paddingHorizontal: 16, paddingBottom: 32 },
  search: { height: 36, borderRadius: 10 },
  account: { gap: 14, paddingVertical: 10 },
  row: { minHeight: 44, gap: 14, paddingVertical: 6 },
  tile: { width: 29, height: 29, borderRadius: 7 },
  empty: { ...fontSize.base, padding: 30, textAlign: "center" },
})

function Chevron() {
  const { colors } = useTheme()
  return (
    <Icon
      as={CaretRightIcon}
      weight="bold"
      size={14}
      color={colors.labelTertiary}
      style={
        I18nManager.isRTL ? { transform: [{ rotate: "180deg" }] } : undefined
      }
    />
  )
}

function SettingsDevice({
  onAccountPress,
  onRowPress,
}: {
  onAccountPress?: () => void
  onRowPress?: (label: string) => void
}) {
  const { colors, isDark } = useTheme()
  const scroll = useHeaderScroll()
  const [query, setQuery] = React.useState("")
  const [toggles, setToggles] = React.useState<Toggles>({
    airplane: false,
    wifi: true,
    bluetooth: true,
    focus: false,
  })

  const setToggle = (key: keyof Toggles, value: boolean) =>
    setToggles((current) => ({
      ...current,
      [key]: value,
      ...(key === "airplane" && value ? { wifi: false, bluetooth: false } : {}),
    }))

  const matches = (label: string) =>
    !query || label.toLowerCase().includes(query.toLowerCase())
  const visible = GROUPS.map((rows) =>
    rows.filter((row) => matches(row.label))
  ).filter((rows): rows is [Row, ...Row[]] => rows.length > 0)

  const group = {
    backgroundColor: isDark ? colors.surfaceSecondary : colors.surface,
  }

  return (
    <Screen
      variant="secondary"
      edges={["top", "right", "left"]}
      style={isDark ? { backgroundColor: colors.surface } : undefined}
    >
      <Header scroll={scroll}>
        <HeaderTitle>Settings</HeaderTitle>
      </Header>
      <HeaderScrollView
        scroll={scroll}
        keyboardShouldPersistTaps="handled"
        keyboardDismissMode="on-drag"
      >
        <HeaderLargeTitle>Settings</HeaderLargeTitle>
        <View style={styles.body}>
          <InputGroup
            style={[
              styles.search,
              isDark && { backgroundColor: colors.surfaceSecondary },
            ]}
          >
            <InputGroupAddon>
              <Icon
                as={MagnifyingGlassIcon}
                weight="bold"
                size={16}
                color={colors.labelSecondary}
              />
            </InputGroupAddon>
            <InputGroupInput
              value={query}
              onChangeText={setQuery}
              placeholder="Search"
              accessibilityLabel="Search settings"
              returnKeyType="search"
              autoCorrect={false}
              clearButtonMode="while-editing"
              style={fontSize.lg}
            />
          </InputGroup>
          {query ? null : (
            <ItemGroup variant="inset" style={group}>
              <Item size="sm" onPress={onAccountPress} style={styles.account}>
                <Avatar size="xl" style={{ width: 58, height: 58 }}>
                  <AvatarFallback style={{ backgroundColor: colors.indigo }}>
                    <Text style={fontSize.xl}>JR</Text>
                  </AvatarFallback>
                </Avatar>
                <ItemContent style={{ gap: 2 }}>
                  <ItemTitle style={[fontSize.xl, { fontWeight: "600" }]}>
                    Jamie Rivera
                  </ItemTitle>
                  <ItemDescription style={fontSize.sm}>
                    suiss Account, Cloud and more
                  </ItemDescription>
                </ItemContent>
                <Chevron />
              </Item>
            </ItemGroup>
          )}
          {visible.map((rows) => (
            <ItemGroup key={rows[0].label} variant="inset" style={group}>
              {rows.map((row, index) => {
                const detail = row.detail?.(toggles)
                const toggle = row.toggle
                return (
                  <React.Fragment key={row.label}>
                    {index > 0 ? (
                      <ItemSeparator style={{ marginStart: 57 }} />
                    ) : null}
                    <Item
                      size="sm"
                      onPress={
                        toggle ? undefined : () => onRowPress?.(row.label)
                      }
                      style={styles.row}
                    >
                      <ItemMedia
                        style={[
                          styles.tile,
                          { backgroundColor: colors[row.tint] },
                        ]}
                      >
                        <Icon
                          as={row.icon}
                          weight="bold"
                          size={17}
                          color={colors.onAccent}
                        />
                      </ItemMedia>
                      <ItemContent>
                        <ItemTitle
                          nativeID={
                            toggle ? `settings-device-${toggle}` : undefined
                          }
                          style={{ fontWeight: "400" }}
                        >
                          {row.label}
                        </ItemTitle>
                      </ItemContent>
                      <ItemActions style={{ gap: 6 }}>
                        {toggle ? (
                          <Switch
                            checked={toggles[toggle]}
                            onCheckedChange={(value) =>
                              setToggle(toggle, value)
                            }
                            accessibilityLabelledBy={`settings-device-${toggle}`}
                          />
                        ) : (
                          <>
                            {detail ? <Text>{detail}</Text> : null}
                            <Chevron />
                          </>
                        )}
                      </ItemActions>
                    </Item>
                  </React.Fragment>
                )
              })}
            </ItemGroup>
          ))}
          {visible.length === 0 ? (
            <Text style={[styles.empty, { color: colors.labelSecondary }]}>
              No Results
            </Text>
          ) : null}
        </View>
      </HeaderScrollView>
    </Screen>
  )
}

export { SettingsDevice }
```

4. Update the import paths to match your project.

**SwiftUI**

1. Target iOS 17 or later.

2. Add the Swift package to your app:

```swift title="Package.swift"
.package(url: "https://github.com/phosphor-icons/swift", from: "2.1.0")
```

3. Copy the theme files every view uses:

```swift title="swift/Theme/Theme.swift"
import SwiftUI
import UIKit

struct RGBA: Sendable {
  let red: CGFloat
  let green: CGFloat
  let blue: CGFloat
  let alpha: CGFloat

  init(_ hex: UInt32, _ alpha: CGFloat = 1) {
    red = CGFloat((hex >> 16) & 0xFF) / 255
    green = CGFloat((hex >> 8) & 0xFF) / 255
    blue = CGFloat(hex & 0xFF) / 255
    self.alpha = alpha
  }

  var uiColor: UIColor {
    UIColor(red: red, green: green, blue: blue, alpha: alpha)
  }
}

extension Color {
  static func adaptive(light: RGBA, dark: RGBA) -> Color {
    let lightColor = light.uiColor
    let darkColor = dark.uiColor
    return Color(uiColor: UIColor { traits in
      traits.userInterfaceStyle == .dark ? darkColor : lightColor
    })
  }
}

public struct TextStyle: Sendable, Hashable {
  public let size: CGFloat
  public let lineHeight: CGFloat
  public let letterSpacing: CGFloat

  public init(size: CGFloat, lineHeight: CGFloat, letterSpacing: CGFloat) {
    self.size = size
    self.lineHeight = lineHeight
    self.letterSpacing = letterSpacing
  }

  public func font(weight: Font.Weight = .regular) -> Font {
    .system(size: size, weight: weight)
  }

  public var lineSpacing: CGFloat {
    max(0, lineHeight - UIFont.systemFont(ofSize: size).lineHeight)
  }
}

extension Hashable where Self == Font {
  public static func textStyle(_ style: TextStyle, weight: Font.Weight = .regular) -> Font {
    style.font(weight: weight)
  }
}

private struct TextStyleModifier: ViewModifier {
  let style: TextStyle
  let weight: Font.Weight

  func body(content: Content) -> some View {
    content
      .font(style.font(weight: weight))
      .tracking(style.letterSpacing)
      .lineSpacing(style.lineSpacing)
      .padding(.vertical, style.lineSpacing / 2)
  }
}

extension View {
  public func textStyle(_ style: TextStyle, weight: Font.Weight = .regular) -> some View {
    modifier(TextStyleModifier(style: style, weight: weight))
  }
}

public struct Shadow: Sendable, Hashable {
  public let color: Color
  public let radius: CGFloat
  public let x: CGFloat
  public let y: CGFloat

  public init(color: Color, radius: CGFloat, x: CGFloat = 0, y: CGFloat = 0) {
    self.color = color
    self.radius = radius
    self.x = x
    self.y = y
  }
}

extension View {
  public func shadow(_ shadow: Shadow) -> some View {
    self.shadow(color: shadow.color, radius: shadow.radius, x: shadow.x, y: shadow.y)
  }
}
```

```swift title="swift/Theme/Tokens.swift"
import SwiftUI

extension Color {
  public static let surface = Color.adaptive(light: .init(0xFFFFFF), dark: .init(0x000000))
  public static let surfaceSecondary = Color.adaptive(light: .init(0xF5F5F7), dark: .init(0x161617))
  public static let surfaceTertiary = Color.adaptive(light: .init(0xE8E8ED), dark: .init(0x2C2C2E))
  public static let surfaceRaised = Color.adaptive(light: .init(0xFFFFFF), dark: .init(0x1D1D1F))
  public static let label = Color.adaptive(light: .init(0x1D1D1F), dark: .init(0xF5F5F7))
  public static let labelSecondary = Color.adaptive(light: .init(0x6E6E73), dark: .init(0xA1A1A6))
  public static let labelTertiary = Color.adaptive(light: .init(0x86868B), dark: .init(0x86868B))
  public static let labelQuaternary = Color.adaptive(light: .init(0xD2D2D7), dark: .init(0x424245))
  public static let control = Color.adaptive(light: .init(0x000000, 0.04), dark: .init(0xFFFFFF, 0.1))
  public static let controlPressed = Color.adaptive(light: .init(0x000000, 0.12), dark: .init(0xFFFFFF, 0.22))
  public static let controlSelected = Color.adaptive(light: .init(0x1D1D1F), dark: .init(0xF5F5F7))
  public static let controlDisabled = Color.adaptive(light: .init(0x000000, 0.03), dark: .init(0xFFFFFF, 0.05))
  public static let onControlSelected = Color.adaptive(light: .init(0xFFFFFF), dark: .init(0x000000))
  public static let itemPressed = Color.adaptive(light: .init(0x000000, 0.08), dark: .init(0xFFFFFF, 0.12))
  public static let itemSelected = Color.adaptive(light: .init(0x000000, 0.06), dark: .init(0xFFFFFF, 0.1))
  public static let separator = Color.adaptive(light: .init(0xD2D2D7), dark: .init(0x424245))
  public static let separatorStrong = Color.adaptive(light: .init(0x86868B), dark: .init(0x6E6E73))
  public static let accent = Color.adaptive(light: .init(0x0071E3), dark: .init(0x0071E3))
  public static let accentPressed = Color.adaptive(light: .init(0x005BB8), dark: .init(0x004D9E))
  public static let accentSelected = Color.adaptive(light: .init(0x0071E3), dark: .init(0x0071E3))
  public static let accentDisabled = Color.adaptive(light: .init(0x0071E3, 0.4), dark: .init(0x0071E3, 0.4))
  public static let onAccent = Color.adaptive(light: .init(0xFFFFFF), dark: .init(0xFFFFFF))
  public static let accentSurface = Color.adaptive(light: .init(0x0071E3, 0.09), dark: .init(0x0071E3, 0.18))
  public static let accentSurfacePressed = Color.adaptive(light: .init(0x0071E3, 0.18), dark: .init(0x0071E3, 0.3))
  public static let link = Color.adaptive(light: .init(0x0066CC), dark: .init(0x2997FF))
  public static let focus = Color.adaptive(light: .init(0x0071E3), dark: .init(0x0071E3))
  public static let scrim = Color.adaptive(light: .init(0x000000, 0.48), dark: .init(0x000000, 0.48))
  public static let media = Color.adaptive(light: .init(0x000000), dark: .init(0x000000))
  public static let onMedia = Color.adaptive(light: .init(0xFFFFFF), dark: .init(0xFFFFFF))
  public static let danger = Color.adaptive(light: .init(0xD0000A), dark: .init(0xFF5447))
  public static let dangerSurface = Color.adaptive(light: .init(0xD70015, 0.08), dark: .init(0xFF453A, 0.2))
  public static let dangerSurfacePressed = Color.adaptive(light: .init(0xD70015, 0.16), dark: .init(0xFF453A, 0.36))
  public static let success = Color.adaptive(light: .init(0x008009), dark: .init(0x30D158))
  public static let successSurface = Color.adaptive(light: .init(0xEFFAF1), dark: .init(0x30D158, 0.16))
  public static let warning = Color.adaptive(light: .init(0xB64400), dark: .init(0xFF9F0A))
  public static let warningSurface = Color.adaptive(light: .init(0xFFF5EA), dark: .init(0xFF9F0A, 0.16))
}

public enum Radius {
  public static let xs: CGFloat = 3
  public static let sm: CGFloat = 5
  public static let md: CGFloat = 8
  public static let lg: CGFloat = 10
  public static let xl: CGFloat = 12
  public static let xl2: CGFloat = 18
  public static let xl3: CGFloat = 28
  public static let full: CGFloat = 9999
}

extension TextStyle {
  public static let xs3 = TextStyle(size: 11, lineHeight: 13, letterSpacing: 0.066)
  public static let xs2 = TextStyle(size: 12, lineHeight: 16, letterSpacing: 0)
  public static let xs = TextStyle(size: 13, lineHeight: 18, letterSpacing: -0.078)
  public static let sm = TextStyle(size: 15, lineHeight: 20, letterSpacing: -0.24)
  public static let md = TextStyle(size: 16, lineHeight: 21, letterSpacing: -0.32)
  public static let base = TextStyle(size: 17, lineHeight: 22, letterSpacing: -0.442)
  public static let lg = TextStyle(size: 20, lineHeight: 25, letterSpacing: -0.46)
  public static let xl = TextStyle(size: 22, lineHeight: 28, letterSpacing: -0.264)
  public static let xl2 = TextStyle(size: 28, lineHeight: 34, letterSpacing: 0.392)
  public static let xl3 = TextStyle(size: 34, lineHeight: 41, letterSpacing: 0.408)

  public static let allCases: [TextStyle] = [.xs3, .xs2, .xs, .sm, .md, .base, .lg, .xl, .xl2, .xl3]
}

extension Shadow {
  public static let md = Shadow(color: .black.opacity(0.08), radius: 6, x: 2, y: 4)
  public static let lg = Shadow(color: .black.opacity(0.12), radius: 12, y: 4)
}
```

4. Copy the source and every file it uses:

```swift title="swift/Blocks/SettingsDevice.swift"
import PhosphorSwift
import SwiftUI

public struct SettingsDevice: View {
  struct Toggles: Equatable, Sendable {
    var airplane = false
    var wifi = true
    var bluetooth = true
    var focus = false
  }

  struct Row {
    let label: String
    let icon: Image
    let tint: Color
    var toggle: WritableKeyPath<Toggles, Bool>?
    var detail: ((Toggles) -> LocalizedStringKey?)?
  }

  static var groups: [[Row]] {
    [
      [
        Row(label: "Airplane Mode", icon: Ph.airplane.bold, tint: .orange, toggle: \.airplane),
        Row(label: "Wi-Fi", icon: Ph.wifiHigh.bold, tint: .blue, detail: { $0.wifi ? "Home" : "Off" }),
        Row(label: "Bluetooth", icon: Ph.bluetooth.bold, tint: .blue, detail: { $0.bluetooth ? "On" : "Off" }),
        Row(label: "Cellular", icon: Ph.cellSignalFull.bold, tint: .green, detail: { $0.airplane ? "Off" : nil }),
      ],
      [
        Row(label: "Notifications", icon: Ph.bell.bold, tint: .red),
        Row(label: "Sounds & Haptics", icon: Ph.speakerHigh.bold, tint: .pink),
        Row(label: "Focus", icon: Ph.moon.bold, tint: .indigo, toggle: \.focus),
        Row(label: "Screen Time", icon: Ph.hourglass.bold, tint: .indigo),
      ],
      [
        Row(label: "General", icon: Ph.gear.bold, tint: .gray),
        Row(label: "Display & Brightness", icon: Ph.sun.bold, tint: .blue),
      ],
    ]
  }

  private var onAccountPress: (() -> Void)?
  private var onRowPress: ((String) -> Void)?
  @State private var query: String
  @State private var toggles = Toggles()

  public init(onAccountPress: (() -> Void)? = nil, onRowPress: ((String) -> Void)? = nil) {
    self.init(query: "")
    self.onAccountPress = onAccountPress
    self.onRowPress = onRowPress
  }

  init(query: String) {
    _query = State(initialValue: query)
  }

  private var visible: [[Row]] {
    Self.groups
      .map { rows in rows.filter { query.isEmpty || $0.label.localizedCaseInsensitiveContains(query) } }
      .filter { !$0.isEmpty }
  }

  public var body: some View {
    Screen {
      HeaderScrollView {
        HeaderLargeTitle("Settings")
        VStack(spacing: 18) {
          InputGroup {
            InputGroupAddon {
              Ph.magnifyingGlass.bold.frame(width: 16, height: 16)
            }
            InputGroupInput("Search", text: $query)
              .submitLabel(.search)
              .accessibilityLabel(Text("Search settings"))
          }
          if query.isEmpty {
            ItemGroup(.inset) {
              Item(size: .sm, action: { onAccountPress?() }) {
                ItemMedia {
                  Avatar(size: .xl) {
                    Text(verbatim: "JR")
                      .scaledFont(.xl, weight: .semibold)
                      .foregroundStyle(Color.onAccent)
                      .frame(maxWidth: .infinity, maxHeight: .infinity)
                      .background(
                        Color.indigo,
                        in: Circle()
                      )
                  }
                  .frame(width: 58, height: 58)
                }
                ItemContent {
                  ItemTitle {
                    Text(verbatim: "Jamie Rivera")
                      .scaledFont(.xl, weight: .semibold)
                  }
                  ItemDescription("suiss Account, Cloud and more")
                }
                ItemActions {
                  SettingsDeviceChevron()
                }
              }
            }
          }
          ForEach(Array(visible.enumerated()), id: \.offset) { _, rows in
            ItemGroup(.inset) {
              ForEach(Array(rows.enumerated()), id: \.element.label) { index, row in
                if index > 0 {
                  Separator().padding(.leading, 57)
                }
                SettingsDeviceRow(row: row, toggles: $toggles, onPress: onRowPress)
              }
            }
          }
          if visible.isEmpty {
            Text("No Results")
              .scaledFont(.base)
              .foregroundStyle(Color.labelSecondary)
              .frame(maxWidth: .infinity)
              .padding(30)
          }
        }
        .padding(.horizontal, 16)
        .padding(.bottom, 24)
      } header: {
        Header {
          HeaderTitle("Settings")
        }
      }
    }
  }
}

private struct SettingsDeviceRow: View {
  let row: SettingsDevice.Row
  @Binding var toggles: SettingsDevice.Toggles
  let onPress: ((String) -> Void)?

  var body: some View {
    if let key = row.toggle {
      Item(size: .sm) {
        media
        ItemContent {
          ItemTitle {
            Text(LocalizedStringKey(row.label)).fontWeight(.regular)
          }
        }
        ItemActions {
          Toggle(isOn: binding(key)) { Text(LocalizedStringKey(row.label)) }
            .labelsHidden()
            .accessibilityLabel(Text(LocalizedStringKey(row.label)))
          .toggleStyle(SwitchStyle())
        }
      }
    } else {
      Item(size: .sm, action: { onPress?(row.label) }) {
        media
        ItemContent {
          ItemTitle {
            Text(LocalizedStringKey(row.label)).fontWeight(.regular)
          }
        }
        ItemActions {
          if let detail = row.detail?(toggles) {
            Text(detail)
              .scaledFont(.base)
              .foregroundStyle(Color.labelSecondary)
          }
          SettingsDeviceChevron()
        }
      }
    }
  }

  private var media: some View {
    ItemMedia {
      row.icon
        .frame(width: 17, height: 17)
        .foregroundStyle(Color.onAccent)
        .frame(width: 29, height: 29)
        .background(row.tint, in: RoundedRectangle(cornerRadius: Radius.md, style: .continuous))
    }
  }

  private func binding(_ key: WritableKeyPath<SettingsDevice.Toggles, Bool>) -> Binding<Bool> {
    Binding(
      get: { toggles[keyPath: key] },
      set: { value in
        toggles[keyPath: key] = value
        if key == \SettingsDevice.Toggles.airplane && value {
          toggles.wifi = false
          toggles.bluetooth = false
        }
      }
    )
  }
}

private struct SettingsDeviceChevron: View {
  var body: some View {
    Ph.caretRight.bold
      .frame(width: 14, height: 14)
      .foregroundStyle(Color.labelTertiary)
      .flipsForRightToLeftLayoutDirection(true)
      .accessibilityHidden(true)
  }
}
```

```swift title="swift/Components/Avatar.swift"
import SwiftUI

public enum AvatarSize: CaseIterable, Sendable {
  case sm, `default`, lg, xl

  var dimension: CGFloat {
    switch self {
    case .sm: 24
    case .default: 32
    case .lg: 40
    case .xl: 64
    }
  }

  var overlap: CGFloat {
    self == .xl ? 16 : 8
  }

  var textStyle: TextStyle {
    switch self {
    case .sm: .xs3
    case .default: .xs
    case .lg: .md
    case .xl: .xl2
    }
  }

  var fallbackIcon: CGFloat {
    switch self {
    case .sm: 14
    case .default: 20
    case .lg: 24
    case .xl: 40
    }
  }

  var badge: CGFloat {
    switch self {
    case .sm: 12
    case .default: 16
    case .lg: 18
    case .xl: 22
    }
  }

  var badgeIcon: CGFloat {
    switch self {
    case .sm: 0
    case .default: 8
    case .lg: 10
    case .xl: 12
    }
  }

  var countIcon: CGFloat {
    switch self {
    case .sm: 12
    case .default: 16
    case .lg: 20
    case .xl: 28
    }
  }
}

public struct Avatar<Content: View>: View {
  public typealias Size = AvatarSize

  let size: Size
  let content: Content

  @Environment(\.avatarGrouped) private var grouped

  public init(size: Size = .default, @ViewBuilder content: () -> Content) {
    self.size = size
    self.content = content()
  }

  public var body: some View {
    ZStack {
      content
    }
    .padding(grouped ? 2 : 0)
    .background {
      if grouped {
        Circle().fill(Color.surface)
      }
    }
    .frame(width: size.dimension, height: size.dimension)
    .environment(\.avatarSize, size)
    .environment(\.avatarGrouped, false)
    .accessibilityElement(children: .combine)
    .accessibilityAddTraits(.isImage)
    .layoutValue(key: AvatarOverlapKey.self, value: size.overlap)
  }
}

extension Avatar {
  public init<Fallback: View>(
    url: URL?,
    size: Size = .default,
    @ViewBuilder fallback: () -> Fallback
  ) where Content == TupleView<(AvatarFallback<Fallback>, AvatarImage)> {
    let fallback = fallback()
    self.init(size: size) {
      AvatarFallback { fallback }
      AvatarImage(url: url)
    }
  }

  public init(
    url: URL?,
    initials: String,
    size: Size = .default
  ) where Content == TupleView<(AvatarFallback<Text>, AvatarImage)> {
    self.init(size: size) {
      AvatarFallback(initials)
      AvatarImage(url: url)
    }
  }
}

public struct AvatarImage: View {
  enum Source {
    case url(URL?)
    case image(Image)
  }

  let source: Source

  public init(url: URL?) {
    source = .url(url)
  }

  public init(_ image: Image) {
    source = .image(image)
  }

  public var body: some View {
    Group {
      switch source {
      case .image(let image):
        image.resizable().scaledToFill()
      case .url(let url):
        AsyncImage(url: url) { phase in
          if let image = phase.image {
            image.resizable().scaledToFill()
          } else {
            Color.clear
          }
        }
      }
    }
    .frame(maxWidth: .infinity, maxHeight: .infinity)
    .clipShape(Circle())
  }
}

public struct AvatarFallback<Content: View>: View {
  let content: Content

  @Environment(\.avatarSize) private var size
  @Environment(\.colorScheme) private var colorScheme

  public init(@ViewBuilder content: () -> Content) {
    self.content = content()
  }

  public var body: some View {
    content
      .textCase(.uppercase)
      .scaledFont(size.textStyle, weight: .semibold)
      .lineLimit(1)
      .minimumScaleFactor(0.5)
      .foregroundStyle(Color.onAccent)
      .environment(\.avatarIconSize, size.fallbackIcon)
      .frame(maxWidth: .infinity, maxHeight: .infinity)
      .background(Color.labelSecondary.opacity(colorScheme == .dark ? 0.6 : 1), in: Circle())
  }
}

extension AvatarFallback where Content == Text {
  public init(_ initials: String) {
    self.init { Text(verbatim: initials) }
  }
}

extension AvatarFallback where Content == AvatarIcon {
  public init(icon: Image) {
    self.init { AvatarIcon(icon) }
  }
}

public struct AvatarIcon: View {
  let image: Image

  @Environment(\.avatarIconSize) private var size

  public init(_ image: Image) {
    self.image = image
  }

  public var body: some View {
    image
      .resizable()
      .scaledToFit()
      .frame(width: size, height: size)
  }
}

public struct AvatarBadge<Content: View>: View {
  let content: Content

  @Environment(\.avatarSize) private var size

  public init(@ViewBuilder content: () -> Content) {
    self.content = content()
  }

  public var body: some View {
    ZStack {
      Circle().fill(Color.surface)
      Circle().fill(Color.accent).padding(2)
      if size != .sm {
        content
          .foregroundStyle(Color.onAccent)
          .environment(\.avatarIconSize, size.badgeIcon)
      }
    }
    .frame(width: size.badge, height: size.badge)
    .offset(x: 2, y: 2)
    .frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .bottomTrailing)
  }
}

extension AvatarBadge where Content == EmptyView {
  public init() {
    self.init { EmptyView() }
  }
}

extension AvatarBadge where Content == AvatarIcon {
  public init(icon: Image) {
    self.init { AvatarIcon(icon) }
  }
}

public struct AvatarGroup<Content: View>: View {
  let content: Content

  public init(@ViewBuilder content: () -> Content) {
    self.content = content()
  }

  public var body: some View {
    AvatarGroupLayout {
      content
    }
    .environment(\.avatarGrouped, true)
    .accessibilityElement(children: .contain)
  }
}

public struct AvatarGroupCount<Content: View>: View {
  let size: AvatarSize
  let content: Content

  public init(size: AvatarSize = .default, @ViewBuilder content: () -> Content) {
    self.size = size
    self.content = content()
  }

  public var body: some View {
    content
      .scaledFont(size.textStyle, weight: .semibold)
      .lineLimit(1)
      .minimumScaleFactor(0.5)
      .foregroundStyle(Color.label)
      .environment(\.avatarIconSize, size.countIcon)
      .frame(maxWidth: .infinity, maxHeight: .infinity)
      .background(Color.surfaceSecondary, in: Circle())
      .padding(2)
      .background(Color.surface, in: Circle())
      .frame(width: size.dimension, height: size.dimension)
      .environment(\.avatarGrouped, false)
      .layoutValue(key: AvatarOverlapKey.self, value: size.overlap)
  }
}

extension AvatarGroupCount where Content == Text {
  public init(_ count: String, size: AvatarSize = .default) {
    self.init(size: size) { Text(verbatim: count) }
  }
}

struct AvatarOverlapKey: LayoutValueKey {
  static let defaultValue: CGFloat = 8
}

struct AvatarGroupLayout: Layout {
  func sizeThatFits(proposal: ProposedViewSize, subviews: Subviews, cache: inout ()) -> CGSize {
    var width: CGFloat = 0
    var height: CGFloat = 0
    for (index, subview) in subviews.enumerated() {
      let size = subview.sizeThatFits(.unspecified)
      width += size.width - (index > 0 ? subview[AvatarOverlapKey.self] : 0)
      height = max(height, size.height)
    }
    return CGSize(width: max(0, width), height: height)
  }

  func placeSubviews(in bounds: CGRect, proposal: ProposedViewSize, subviews: Subviews, cache: inout ()) {
    var x = bounds.minX
    for (index, subview) in subviews.enumerated() {
      let size = subview.sizeThatFits(.unspecified)
      if index > 0 {
        x -= subview[AvatarOverlapKey.self]
      }
      subview.place(at: CGPoint(x: x, y: bounds.midY), anchor: .leading, proposal: ProposedViewSize(size))
      x += size.width
    }
  }
}

extension EnvironmentValues {
  @Entry var avatarSize: AvatarSize = .default
  @Entry var avatarGrouped = false
  @Entry var avatarIconSize: CGFloat = 20
}
```

```swift title="swift/Components/Button.swift"
import SwiftUI

public struct VariantButtonStyle: ButtonStyle {
  public enum Variant: CaseIterable, Sendable {
    case `default`, outline, secondary, tinted, ghost, plain, destructive, link
  }

  public enum Size: CaseIterable, Sendable {
    case `default`, xs, sm, lg, xl, icon, iconXs, iconSm, iconLg, iconXl

    var height: CGFloat {
      switch self {
      case .xs, .iconXs: 24
      case .sm, .iconSm: 32
      case .default, .icon: 36
      case .lg, .iconLg: 44
      case .xl, .iconXl: 56
      }
    }

    var horizontalPadding: CGFloat {
      switch self {
      case .xs: 11
      case .sm: 12
      case .default: 16
      case .lg: 22
      case .xl: 31
      case .icon, .iconXs, .iconSm, .iconLg, .iconXl: 0
      }
    }

    var spacing: CGFloat {
      switch self {
      case .xs, .sm, .iconXs, .iconSm: 4
      case .xl, .iconXl: 8
      default: 6
      }
    }

    var textStyle: TextStyle {
      switch self {
      case .xs, .iconXs: .xs2
      case .lg, .xl: .base
      default: .sm
      }
    }

    public var iconSize: CGFloat {
      switch self {
      case .xs, .iconXs: 12
      default: 16
      }
    }

    var blockRadius: CGFloat {
      switch self {
      case .xs, .iconXs: Radius.sm
      case .lg, .iconLg: Radius.lg
      case .xl, .iconXl: Radius.xl
      default: Radius.md
      }
    }

    var isIcon: Bool {
      switch self {
      case .icon, .iconXs, .iconSm, .iconLg, .iconXl: true
      default: false
      }
    }
  }

  let variant: Variant
  let size: Size
  let block: Bool
  var metrics: ButtonMetrics?

  public init(_ variant: Variant = .default, size: Size = .default, block: Bool = false) {
    self.variant = variant
    self.size = size
    self.block = block
  }

  init(_ variant: Variant, size: Size, metrics: ButtonMetrics) {
    self.variant = variant
    self.size = size
    self.block = false
    self.metrics = metrics
  }

  public func makeBody(configuration: Configuration) -> some View {
    StyledButton(configuration: configuration, variant: variant, size: size, block: block, metrics: metrics)
  }
}

struct ButtonMetrics: Sendable {
  var horizontalPadding: CGFloat
  var spacing: CGFloat
  var iconSize: CGFloat
  var textStyle: TextStyle
}

private struct StyledButton: View {
  let configuration: ButtonStyleConfiguration
  let variant: VariantButtonStyle.Variant
  let size: VariantButtonStyle.Size
  let block: Bool
  let metrics: ButtonMetrics?

  @Environment(\.colorScheme) private var colorScheme
  @Environment(\.isEnabled) private var isEnabled
  @Environment(\.buttonGroup) private var group

  var body: some View {
    let joined = group != nil && variant != .ghost && variant != .plain
    let rounded = RoundedRectangle(
      cornerRadius: block ? size.blockRadius : Radius.full,
      style: .continuous
    )
    let shape = joined ? AnyShape(Rectangle()) : AnyShape(rounded)
    configuration.label
      .labelStyle(ButtonLabelStyle(spacing: metrics?.spacing ?? size.spacing, iconSize: metrics?.iconSize ?? size.iconSize))
    .font((metrics?.textStyle ?? size.textStyle).font())
    .tracking((metrics?.textStyle ?? size.textStyle).letterSpacing)
    .underline(variant == .link && pressed && isEnabled)
    .lineLimit(1)
    .foregroundStyle(foreground)
    .padding(.horizontal, metrics?.horizontalPadding ?? size.horizontalPadding)
    .frame(width: size.isIcon && !block ? size.height : nil, height: size.height)
    .frame(maxWidth: block || group == .vertical ? .infinity : nil)
    .background(background, in: shape)
    .overlay {
      if variant == .outline && !joined {
        rounded.strokeBorder(Color.separator)
      }
    }
    .contentShape(shape)
    .anchorPreference(key: ButtonGroupFramesKey.self, value: .bounds) { anchor in
      joined ? [ButtonGroupFrame(bounds: anchor, outlined: variant == .outline)] : []
    }
  }

  private var isDark: Bool { colorScheme == .dark }
  private var pressed: Bool { configuration.isPressed }

  private var foreground: Color {
    switch variant {
    case .default:
      .onAccent
    case .outline, .secondary, .ghost:
      isEnabled ? .label : .labelQuaternary
    case .tinted, .plain:
      isEnabled ? .link : .link.opacity(0.4)
    case .destructive:
      isEnabled ? .danger : .danger.opacity(0.4)
    case .link:
      isEnabled ? .link : .labelQuaternary
    }
  }

  private var background: Color {
    switch variant {
    case .default:
      !isEnabled ? .accentDisabled : pressed ? .accentPressed : .accent
    case .outline:
      isEnabled && pressed ? .itemPressed : isDark ? .clear : .surface
    case .secondary:
      !isEnabled ? .controlDisabled : pressed ? .controlPressed : .control
    case .tinted:
      isEnabled && pressed ? .accentSurfacePressed : .accentSurface
    case .ghost:
      isEnabled && pressed ? .itemPressed : .clear
    case .plain:
      isEnabled && pressed ? .itemPressed : .clear
    case .destructive:
      isEnabled && pressed ? .dangerSurfacePressed : .dangerSurface
    case .link:
      .clear
    }
  }
}

struct ButtonLabelStyle: LabelStyle {
  let spacing: CGFloat
  let iconSize: CGFloat

  func makeBody(configuration: Configuration) -> some View {
    HStack(spacing: spacing) {
      configuration.icon
        .frame(width: iconSize, height: iconSize)
      configuration.title
    }
  }
}

extension ButtonStyle where Self == VariantButtonStyle {
  public static func variant(
    _ variant: VariantButtonStyle.Variant = .default,
    size: VariantButtonStyle.Size = .default,
    block: Bool = false
  ) -> VariantButtonStyle {
    VariantButtonStyle(variant, size: size, block: block)
  }
}
```

```swift title="swift/Components/ButtonGroup.swift"
import SwiftUI

extension EnvironmentValues {
  @Entry var buttonGroup: Axis? = nil
  @Entry var buttonGroupSize: CGSize = .zero
}

enum ButtonGroupSpace: Hashable {
  case group
}

struct ButtonGroupFrame {
  let bounds: Anchor<CGRect>
  let outlined: Bool
}

struct ButtonGroupFramesKey: PreferenceKey {
  static var defaultValue: [ButtonGroupFrame] { [] }

  static func reduce(value: inout [ButtonGroupFrame], nextValue: () -> [ButtonGroupFrame]) {
    value.append(contentsOf: nextValue())
  }
}

struct ButtonGroupNestedKey: PreferenceKey {
  static var defaultValue: Bool { false }

  static func reduce(value: inout Bool, nextValue: () -> Bool) {
    value = value || nextValue()
  }
}

public struct ButtonGroup<Content: View>: View {
  let orientation: Axis
  let content: Content

  @State private var nested = false
  @State private var size: CGSize = .zero

  public init(orientation: Axis = .horizontal, @ViewBuilder content: () -> Content) {
    self.orientation = orientation
    self.content = content()
  }

  public var body: some View {
    let shape = orientation == .horizontal
      ? AnyShape(Capsule())
      : AnyShape(RoundedRectangle(cornerRadius: Radius.xl2, style: .continuous))
    stack
      .coordinateSpace(.named(ButtonGroupSpace.group))
      .onGeometryChange(for: CGSize.self) { $0.size } action: { size = $0 }
      .environment(\.buttonGroup, nested ? nil : orientation)
      .environment(\.buttonGroupSize, size)
      .onPreferenceChange(ButtonGroupNestedKey.self) { nested = $0 }
      .modifier(ButtonGroupClip(shape: nested ? nil : shape))
      .overlayPreferenceValue(ButtonGroupFramesKey.self) { frames in
        if !nested {
          GeometryReader { proxy in
            outline(frames.map { (proxy[$0.bounds], $0.outlined) }, shape: shape)
          }
        }
      }
      .transformPreference(ButtonGroupFramesKey.self) { $0 = [] }
      .transformPreference(ButtonGroupNestedKey.self) { $0 = true }
      .fixedSize(horizontal: orientation == .vertical, vertical: orientation == .horizontal)
      .accessibilityElement(children: .contain)
  }

  @ViewBuilder private var stack: some View {
    switch orientation {
    case .horizontal:
      HStack(spacing: nested ? 8 : 0) { content }
    case .vertical:
      VStack(spacing: nested ? 8 : 0) { content }
    }
  }

  @ViewBuilder private func outline(_ frames: [(CGRect, Bool)], shape: AnyShape) -> some View {
    if frames.contains(where: \.1) {
      ZStack(alignment: .topLeading) {
        shape
          .stroke(Color.separator, lineWidth: 1)
          .padding(0.5)
          .mask {
            Path { path in
              for (rect, outlined) in frames where outlined {
                path.addRect(rect)
              }
            }
          }
        ForEach(Array(frames.dropLast().enumerated()), id: \.offset) { _, frame in
          if frame.1 {
            divider(frame.0)
          }
        }
      }
      .clipShape(shape)
      .allowsHitTesting(false)
    }
  }

  private func divider(_ rect: CGRect) -> some View {
    let horizontal = orientation == .horizontal
    return Rectangle()
      .fill(Color.separator)
      .frame(width: horizontal ? 1 : rect.width, height: horizontal ? rect.height : 1)
      .position(
        x: horizontal ? rect.maxX - 0.5 : rect.midX,
        y: horizontal ? rect.midY : rect.maxY - 0.5
      )
  }
}

struct ButtonGroupItem<Content: View>: View {
  let radius: CGFloat
  let content: (UnevenRoundedRectangle) -> Content

  @State private var frame: CGRect = .zero
  @Environment(\.buttonGroup) private var group
  @Environment(\.buttonGroupSize) private var groupSize

  init(radius: CGFloat, @ViewBuilder content: @escaping (UnevenRoundedRectangle) -> Content) {
    self.radius = radius
    self.content = content
  }

  var body: some View {
    if let group {
      content(shape(group))
        .onGeometryChange(for: CGRect.self) { $0.frame(in: .named(ButtonGroupSpace.group)) } action: { frame = $0 }
    } else {
      content(UnevenRoundedRectangle(cornerRadii: RectangleCornerRadii(
        topLeading: radius,
        bottomLeading: radius,
        bottomTrailing: radius,
        topTrailing: radius
      ), style: .continuous))
    }
  }

  private func shape(_ group: Axis) -> UnevenRoundedRectangle {
    let horizontal = group == .horizontal
    let first = horizontal ? frame.minX <= 0.5 : frame.minY <= 0.5
    let last = horizontal
      ? frame.maxX >= groupSize.width - 0.5
      : frame.maxY >= groupSize.height - 0.5
    let round = horizontal ? frame.height / 2 : Radius.xl2
    let start: CGFloat = first ? round : 0
    let end: CGFloat = last ? round : 0
    let radii = horizontal
      ? RectangleCornerRadii(topLeading: start, bottomLeading: start, bottomTrailing: end, topTrailing: end)
      : RectangleCornerRadii(topLeading: start, bottomLeading: end, bottomTrailing: end, topTrailing: start)
    return UnevenRoundedRectangle(cornerRadii: radii, style: .continuous)
  }
}

private struct ButtonGroupClip: ViewModifier {
  let shape: AnyShape?

  func body(content: Content) -> some View {
    if let shape {
      content.clipShape(shape)
    } else {
      content
    }
  }
}

public struct ButtonGroupText<Content: View>: View {
  let content: Content

  @Environment(\.buttonGroup) private var group

  public init(@ViewBuilder content: () -> Content) {
    self.content = content()
  }

  public var body: some View {
    let shape = group == nil ? AnyShape(Capsule()) : AnyShape(Rectangle())
    HStack(spacing: 8) {
      content
    }
    .labelStyle(ButtonLabelStyle(spacing: 8, iconSize: 16))
    .scaledFont(.sm)
    .lineLimit(1)
    .foregroundStyle(Color.label)
    .padding(.horizontal, 10)
    .frame(minHeight: 36)
    .frame(maxWidth: group == .vertical ? .infinity : nil, maxHeight: group == .horizontal ? .infinity : nil)
    .background(Color.control, in: shape)
    .anchorPreference(key: ButtonGroupFramesKey.self, value: .bounds) { anchor in
      group == nil ? [] : [ButtonGroupFrame(bounds: anchor, outlined: false)]
    }
  }
}

extension ButtonGroupText where Content == Text {
  public init(_ title: LocalizedStringKey) {
    self.init { Text(title) }
  }

  public init(verbatim title: String) {
    self.init { Text(verbatim: title) }
  }
}

public struct ButtonGroupSeparator: View {
  let orientation: Axis

  public init(_ orientation: Axis = .vertical) {
    self.orientation = orientation
  }

  public var body: some View {
    let vertical = orientation == .vertical
    Rectangle()
      .fill(Color.label.opacity(0.2))
      .frame(width: vertical ? 1 : nil, height: vertical ? nil : 1)
      .padding(vertical ? .vertical : .horizontal, 9)
      .frame(maxWidth: vertical ? nil : .infinity, maxHeight: vertical ? .infinity : nil)
      .padding(vertical ? .trailing : .bottom, -1)
      .zIndex(1)
      .accessibilityHidden(true)
  }
}
```

```swift title="swift/Components/Checkbox.swift"
import PhosphorSwift
import SwiftUI

extension Shadow {
  static let control = Shadow(color: .black.opacity(0.08), radius: 0.5, y: 0.5)
  static let thumb = Shadow(color: .black.opacity(0.12), radius: 1.5, y: 1)
}

struct SelectionIndicator<Mark: View>: View {
  let checked: Bool
  let pressed: Bool
  let cornerRadius: CGFloat
  let mark: Mark

  @Environment(\.isEnabled) private var isEnabled
  @Environment(\.isInvalid) private var invalid
  @Environment(\.colorScheme) private var colorScheme

  init(checked: Bool, pressed: Bool, cornerRadius: CGFloat, @ViewBuilder mark: () -> Mark) {
    self.checked = checked
    self.pressed = pressed
    self.cornerRadius = cornerRadius
    self.mark = mark()
  }

  var body: some View {
    let shape = RoundedRectangle(cornerRadius: cornerRadius, style: .continuous)
    ZStack {
      shape.fill(fill)
      shape.strokeBorder(border, lineWidth: 1)
      if checked {
        mark
      }
    }
    .frame(width: 16, height: 16)
    .shadow(raised ? .control : Shadow(color: .clear, radius: 0))
  }

  private var isDark: Bool { colorScheme == .dark }

  private var raised: Bool { !checked && isEnabled && !isDark }

  private var fill: Color {
    if checked {
      return !isEnabled ? .accentDisabled : pressed ? .accentPressed : .accent
    }
    if !isEnabled { return .controlDisabled }
    if isDark { return pressed ? .labelTertiary.opacity(0.6) : .labelQuaternary }
    return pressed ? .control : .surface
  }

  private var border: Color {
    if checked {
      return !isEnabled ? .clear : pressed ? .accentPressed : .accent
    }
    if !isEnabled { return isDark ? .clear : .label.opacity(0.1) }
    if invalid { return .danger }
    return isDark ? .clear : .label.opacity(0.25)
  }
}

struct PressReader<Content: View>: ButtonStyle {
  let content: (Bool) -> Content

  init(@ViewBuilder content: @escaping (Bool) -> Content) {
    self.content = content
  }

  func makeBody(configuration: Configuration) -> some View {
    content(configuration.isPressed)
  }
}

public struct CheckboxStyle: ToggleStyle {
  public init() {}

  public func makeBody(configuration: Configuration) -> some View {
    HapticButton(style: PressReader { pressed in
      HStack(spacing: 12) {
        SelectionIndicator(
          checked: configuration.isOn || configuration.isMixed,
          pressed: pressed,
          cornerRadius: 4
        ) {
          (configuration.isMixed ? Ph.minus.regular : Ph.check.regular)
            .frame(width: 14, height: 14)
            .foregroundStyle(Color.onAccent)
        }
        configuration.label
      }
      .contentShape(Rectangle().inset(by: -8))
    }) {
      configuration.isOn.toggle()
      return true
    }
    .accessibilityElement(children: .combine)
    .accessibilityRemoveTraits(.isButton)
    .accessibilityAddTraits(.isToggle)
    .accessibilityValue(
      configuration.isMixed
        ? Text("Mixed")
        : configuration.isOn ? Text("Checked") : Text("Unchecked")
    )
  }
}

extension ToggleStyle where Self == CheckboxStyle {
  public static var checkbox: CheckboxStyle { CheckboxStyle() }
}
```

```swift title="swift/Components/Field.swift"
import SwiftUI

extension EnvironmentValues {
  @Entry public var isInvalid = false
  @Entry var fieldInset = false
  @Entry var fieldGroupInset = false
  @Entry var fieldSetInset = false
}

extension View {
  public func invalid(_ isInvalid: Bool = true) -> some View {
    environment(\.isInvalid, isInvalid)
  }
}

public enum FieldOrientation: CaseIterable, Sendable {
  case vertical, horizontal
}

public struct Field<Content: View>: View {
  let orientation: FieldOrientation
  let invalid: Bool?
  let content: Content

  @Environment(\.fieldGroupInset) private var inset
  @Environment(\.isInvalid) private var inheritedInvalid

  public init(
    orientation: FieldOrientation = .vertical,
    invalid: Bool? = nil,
    @ViewBuilder content: () -> Content
  ) {
    self.orientation = orientation
    self.invalid = invalid
    self.content = content()
  }

  public var body: some View {
    Group {
      switch orientation {
      case .vertical:
        VStack(alignment: .leading, spacing: 12) { content }
      case .horizontal:
        HStack(alignment: .center, spacing: 12) { content }
      }
    }
    .frame(maxWidth: .infinity, alignment: .leading)
    .padding(.horizontal, inset ? 16 : 0)
    .padding(.vertical, inset ? 6 : 0)
    .frame(minHeight: inset ? 44 : nil)
    .overlay(alignment: .top) {
      if inset {
        Color.separator
          .frame(height: 1)
          .padding(.leading, 16)
          .offset(y: -1)
      }
    }
    .environment(\.fieldInset, inset)
    .environment(\.fieldGroupInset, false)
    .environment(\.isInvalid, invalid ?? inheritedInvalid)
  }
}

public struct FieldContent<Content: View>: View {
  let content: Content

  public init(@ViewBuilder content: () -> Content) {
    self.content = content()
  }

  public var body: some View {
    VStack(alignment: .leading, spacing: 4) {
      content
    }
    .frame(maxWidth: .infinity, alignment: .leading)
  }
}

public struct FieldTitle: View {
  let text: Text

  @Environment(\.isEnabled) private var isEnabled

  public init(_ title: LocalizedStringKey) {
    text = Text(title)
  }

  public init<S: StringProtocol>(_ title: S) {
    text = Text(title)
  }

  public var body: some View {
    text
      .scaledTextStyle(.base, weight: .semibold)
      .foregroundStyle(isEnabled ? Color.label : .labelQuaternary)
  }
}

public struct FieldDescription: View {
  let text: Text

  @Environment(\.fieldSetInset) private var inset

  public init(_ description: LocalizedStringKey) {
    text = Text(description)
  }

  public init<S: StringProtocol>(_ description: S) {
    text = Text(description)
  }

  public var body: some View {
    text
      .scaledTextStyle(inset ? .xs : .sm)
      .foregroundStyle(Color.labelSecondary)
      .multilineTextAlignment(.leading)
      .fixedSize(horizontal: false, vertical: true)
      .padding(.leading, inset ? 16 : 0)
  }
}

public struct FieldError: View {
  let messages: [String]
  let text: Text?

  public init(_ message: LocalizedStringKey) {
    messages = []
    text = Text(message)
  }

  public init(errors: [String?]) {
    var seen = Set<String>()
    messages = errors.compactMap { $0 }.filter { !$0.isEmpty && seen.insert($0).inserted }
    text = nil
  }

  public var body: some View {
    if let content {
      content
        .scaledTextStyle(.sm)
        .foregroundStyle(Color.danger)
        .multilineTextAlignment(.leading)
        .fixedSize(horizontal: false, vertical: true)
    }
  }

  private var content: Text? {
    if let text { return text }
    switch messages.count {
    case 0: return nil
    case 1: return Text(verbatim: messages[0])
    default: return Text(verbatim: messages.map { "\u{2022} \($0)" }.joined(separator: "\n"))
    }
  }
}

public enum FieldGroupVariant: CaseIterable, Sendable {
  case `default`, inset
}

public struct FieldGroup<Content: View>: View {
  let variant: FieldGroupVariant
  let content: Content

  public init(_ variant: FieldGroupVariant = .default, @ViewBuilder content: () -> Content) {
    self.variant = variant
    self.content = content()
  }

  public var body: some View {
    styled
      .environment(\.fieldGroupInset, variant == .inset)
      .environment(\.fieldSetInset, false)
      .transformPreference(FieldSetInsetKey.self) { $0 = variant == .inset }
  }

  @ViewBuilder private var styled: some View {
    let stack = VStack(alignment: .leading, spacing: variant == .inset ? 0 : 28) {
      content
    }
    .frame(maxWidth: .infinity, alignment: .leading)
    if variant == .inset {
      let shape = RoundedRectangle(cornerRadius: Radius.xl2, style: .continuous)
      stack
        .background(Color.surfaceSecondary, in: shape)
        .clipShape(shape)
    } else {
      stack
    }
  }
}

struct FieldSetInsetKey: PreferenceKey {
  static let defaultValue = false

  static func reduce(value: inout Bool, nextValue: () -> Bool) {
    value = value || nextValue()
  }
}

public struct FieldSet<Content: View>: View {
  let content: Content

  @State private var inset = false

  public init(@ViewBuilder content: () -> Content) {
    self.content = content()
  }

  public var body: some View {
    VStack(alignment: .leading, spacing: inset ? 8 : 24) {
      content
    }
    .frame(maxWidth: .infinity, alignment: .leading)
    .environment(\.fieldSetInset, inset)
    .onPreferenceChange(FieldSetInsetKey.self) { inset = $0 }
    .transformPreference(FieldSetInsetKey.self) { $0 = false }
    .accessibilityElement(children: .contain)
  }
}

public struct FieldLegend: View {
  public enum Variant: CaseIterable, Sendable {
    case legend, label
  }

  let text: Text
  let variant: Variant

  @Environment(\.fieldSetInset) private var inset
  @Environment(\.isEnabled) private var isEnabled

  public init(_ title: LocalizedStringKey, variant: Variant = .legend) {
    text = Text(title)
    self.variant = variant
  }

  public init<S: StringProtocol>(_ title: S, variant: Variant = .legend) {
    text = Text(title)
    self.variant = variant
  }

  public var body: some View {
    Group {
      if inset {
        text
          .textCase(.uppercase)
          .scaledTextStyle(.xs)
          .foregroundStyle(isEnabled ? Color.labelSecondary : .labelQuaternary)
          .padding(.leading, 16)
      } else {
        text
          .scaledTextStyle(.base, weight: .semibold)
          .foregroundStyle(isEnabled ? Color.label : .labelQuaternary)
          .padding(.bottom, 12)
      }
    }
    .accessibilityAddTraits(variant == .legend ? .isHeader : [])
  }
}

public struct FieldSeparator<Content: View>: View {
  let content: Content

  public init(@ViewBuilder content: () -> Content) {
    self.content = content()
  }

  public var body: some View {
    ZStack {
      Separator()
      content
        .scaledTextStyle(.sm)
        .foregroundStyle(Color.labelSecondary)
        .padding(.horizontal, 8)
        .background(Color.surface)
    }
    .frame(minHeight: 20)
    .padding(.vertical, -8)
  }
}

extension FieldSeparator where Content == EmptyView {
  public init() {
    self.init { EmptyView() }
  }
}

extension FieldSeparator where Content == Text {
  public init(_ title: LocalizedStringKey) {
    self.init { Text(title) }
  }
}
```

```swift title="swift/Components/Haptics.swift"
import SwiftUI

extension EnvironmentValues {
  @Entry public var hapticsEnabled = true
}

extension View {
  public func haptics(_ enabled: Bool) -> some View {
    environment(\.hapticsEnabled, enabled)
  }

  func hapticFeedback<Trigger: Equatable>(_ feedback: SensoryFeedback, trigger: Trigger) -> some View {
    modifier(HapticFeedbackModifier(feedback: feedback, trigger: trigger) { _, _ in true })
  }

  func hapticFeedback<Trigger: Equatable>(
    _ feedback: SensoryFeedback,
    trigger: Trigger,
    condition: @escaping (Trigger, Trigger) -> Bool
  ) -> some View {
    modifier(HapticFeedbackModifier(feedback: feedback, trigger: trigger, condition: condition))
  }
}

private struct HapticFeedbackModifier<Trigger: Equatable>: ViewModifier {
  let feedback: SensoryFeedback
  let trigger: Trigger
  let condition: (Trigger, Trigger) -> Bool

  @Environment(\.hapticsEnabled) private var enabled

  func body(content: Content) -> some View {
    let enabled = enabled
    let condition = condition
    content.sensoryFeedback(feedback, trigger: trigger) { old, new in
      enabled && condition(old, new)
    }
  }
}

enum HapticMoments {
  static func step(_ value: Double, bounds: ClosedRange<Double>, step: Double?) -> Int? {
    guard let step, step > 0 else { return nil }
    return Int(((value - bounds.lowerBound) / step).rounded())
  }

  static func lifted<Value: Equatable>(_ old: Value?, _ new: Value?) -> Bool {
    new != nil && old != new
  }

  static func crossed<Value: Equatable>(_ old: Value?, _ new: Value?) -> Bool {
    old == nil && new != nil
  }

  static func moved(_ old: Int?, _ new: Int?) -> Bool {
    guard let old, let new else { return false }
    return old != new
  }
}

struct HapticButton<Style: ButtonStyle>: View {
  let feedback: SensoryFeedback
  let action: () -> Bool
  let style: Style

  @State private var count = 0

  init(_ feedback: SensoryFeedback = .selection, style: Style, action: @escaping () -> Bool) {
    self.feedback = feedback
    self.style = style
    self.action = action
  }

  var body: some View {
    Button {
      if action() { count += 1 }
    } label: {
      EmptyView()
    }
    .buttonStyle(style)
    .hapticFeedback(feedback, trigger: count)
  }
}
```

```swift title="swift/Components/Header.swift"
import PhosphorSwift
import SwiftUI

extension EnvironmentValues {
  @Entry var headerProgress: CGFloat?
  @Entry var headerReport: ((CGFloat) -> Void)?
}

enum HeaderMath {
  static func progress(minY: CGFloat, height: CGFloat) -> CGFloat {
    guard height > 0 else { return 0 }
    return min(max(-minY / height, 0), 1)
  }
}

public struct Header<Title: View, Leading: View, Trailing: View>: View {
  let title: Title
  let leading: Leading
  let trailing: Trailing

  @Environment(\.headerProgress) private var progress
  @Environment(\.screenBackground) private var background

  public init(
    @ViewBuilder title: () -> Title,
    @ViewBuilder leading: () -> Leading,
    @ViewBuilder trailing: () -> Trailing
  ) {
    self.title = title()
    self.leading = leading()
    self.trailing = trailing()
  }

  public var body: some View {
    HeaderLayout {
      HStack(spacing: 0) { leading }
        .frame(maxHeight: .infinity)
      ZStack { title }
        .frame(maxWidth: .infinity, maxHeight: .infinity)
      HStack(spacing: 0) { trailing }
        .frame(maxHeight: .infinity)
    }
    .padding(.horizontal, 8)
    .frame(height: 44)
    .frame(maxWidth: .infinity)
    .background(background.ignoresSafeArea(.container, edges: .top))
    .overlay(alignment: .bottom) {
      Color.separator
        .frame(height: 1)
        .opacity(progress ?? 0)
    }
    .accessibilityElement(children: .contain)
    .accessibilityAddTraits(.isHeader)
  }
}

extension Header where Leading == EmptyView {
  public init(@ViewBuilder title: () -> Title, @ViewBuilder trailing: () -> Trailing) {
    self.init(title: title, leading: { EmptyView() }, trailing: trailing)
  }
}

extension Header where Trailing == EmptyView {
  public init(@ViewBuilder title: () -> Title, @ViewBuilder leading: () -> Leading) {
    self.init(title: title, leading: leading, trailing: { EmptyView() })
  }
}

extension Header where Leading == EmptyView, Trailing == EmptyView {
  public init(@ViewBuilder title: () -> Title) {
    self.init(title: title, leading: { EmptyView() }, trailing: { EmptyView() })
  }
}

struct HeaderLayout: Layout {
  var spacing: CGFloat = 8
  var minSide: CGFloat = 44

  func sizeThatFits(proposal: ProposedViewSize, subviews: Subviews, cache: inout ()) -> CGSize {
    let ideal = subviews.reduce(0) { $0 + $1.sizeThatFits(.unspecified).width }
    return CGSize(width: proposal.width ?? ideal, height: proposal.height ?? 44)
  }

  func placeSubviews(in bounds: CGRect, proposal: ProposedViewSize, subviews: Subviews, cache: inout ()) {
    guard subviews.count == 3 else { return }
    let leading = subviews[0]
    let title = subviews[1]
    let trailing = subviews[2]
    let trailingWidth = trailing.sizeThatFits(.unspecified).width
    let leadingIdeal = leading.sizeThatFits(.unspecified).width
    let leadingMinimum = leading.sizeThatFits(ProposedViewSize(width: 0, height: nil)).width
    let reserve = max(minSide, trailingWidth, leadingMinimum) + spacing
    let titleWidth = max(0, min(title.sizeThatFits(.unspecified).width, bounds.width - reserve * 2))
    let side = max(0, (bounds.width - titleWidth) / 2 - spacing)
    let leadingProposal = ProposedViewSize(width: min(side, leadingIdeal), height: nil)
    let leadingWidth = leading.sizeThatFits(leadingProposal).width
    let titleInset = max(leadingWidth, trailingWidth) + spacing
    leading.place(
      at: CGPoint(x: bounds.minX, y: bounds.minY),
      anchor: .topLeading,
      proposal: ProposedViewSize(width: leadingProposal.width, height: bounds.height)
    )
    title.place(
      at: CGPoint(x: bounds.minX + titleInset, y: bounds.minY),
      anchor: .topLeading,
      proposal: ProposedViewSize(width: max(0, bounds.width - titleInset * 2), height: bounds.height)
    )
    trailing.place(
      at: CGPoint(x: bounds.maxX - trailingWidth, y: bounds.minY),
      anchor: .topLeading,
      proposal: ProposedViewSize(width: trailingWidth, height: bounds.height)
    )
  }
}

public struct HeaderTitle: View {
  let title: Text
  let subtitle: Text?

  @Environment(\.headerProgress) private var progress

  public init(_ title: LocalizedStringKey, subtitle: LocalizedStringKey? = nil) {
    self.title = Text(title)
    self.subtitle = subtitle.map { Text($0) }
  }

  public init(verbatim title: String, subtitle: String? = nil) {
    self.title = Text(verbatim: title)
    self.subtitle = subtitle.map { Text(verbatim: $0) }
  }

  public var body: some View {
    VStack(spacing: 0) {
      title
        .scaledFont(.base, weight: .semibold)
        .foregroundStyle(Color.label)
      if let subtitle {
        subtitle
          .scaledFont(.xs2)
          .foregroundStyle(Color.labelSecondary)
      }
    }
    .lineLimit(1)
    .multilineTextAlignment(.center)
    .opacity(progress ?? 1)
    .accessibilityElement(children: .combine)
    .accessibilityHidden((progress ?? 1) < 0.5)
  }
}

public struct HeaderLargeTitle: View {
  let title: Text
  let subtitle: Text?

  @Environment(\.headerReport) private var report

  public init(_ title: LocalizedStringKey, subtitle: LocalizedStringKey? = nil) {
    self.title = Text(title)
    self.subtitle = subtitle.map { Text($0) }
  }

  public init(verbatim title: String, subtitle: String? = nil) {
    self.title = Text(verbatim: title)
    self.subtitle = subtitle.map { Text(verbatim: $0) }
  }

  public var body: some View {
    VStack(alignment: .leading, spacing: 2) {
      title
        .scaledFont(.xl3, weight: .bold)
        .foregroundStyle(Color.label)
        .accessibilityAddTraits(.isHeader)
      if let subtitle {
        subtitle
          .scaledFont(.sm)
          .foregroundStyle(Color.labelSecondary)
      }
    }
    .lineLimit(2)
    .padding(.horizontal, 16)
    .padding(.top, 4)
    .padding(.bottom, 8)
    .frame(maxWidth: .infinity, alignment: .leading)
    .onGeometryChange(for: CGFloat.self) { proxy in
      HeaderMath.progress(minY: proxy.frame(in: .scrollView).minY, height: proxy.size.height)
    } action: { value in
      report?(value)
    }
  }
}

public struct HeaderBack: View {
  let label: Text?
  let action: (() -> Void)?

  @Environment(\.dismiss) private var dismiss
  @Environment(\.isEnabled) private var isEnabled

  public init(_ label: LocalizedStringKey? = nil, action: (() -> Void)? = nil) {
    self.label = label.map { Text($0) }
    self.action = action
  }

  public init(verbatim label: String, action: (() -> Void)? = nil) {
    self.label = Text(verbatim: label)
    self.action = action
  }

  public var body: some View {
    Button {
      if let action {
        action()
      } else {
        dismiss()
      }
    } label: {
      EmptyView()
    }
    .buttonStyle(PressReader { pressed in
      HStack(spacing: 2) {
        Ph.caretLeft.bold
          .frame(width: 20, height: 20)
          .flipsForRightToLeftLayoutDirection(true)
        if let label {
          label
            .scaledFont(.base)
            .lineLimit(1)
        }
      }
      .foregroundStyle(!isEnabled ? Color.labelQuaternary : pressed ? .link.opacity(0.4) : .link)
      .padding(.horizontal, 4)
      .frame(minWidth: 44, minHeight: 44, alignment: .leading)
      .contentShape(Rectangle())
    })
    .accessibilityLabel(label ?? Text("Back"))
  }
}

public struct HeaderActions<Content: View>: View {
  let content: Content

  public init(@ViewBuilder content: () -> Content) {
    self.content = content()
  }

  public var body: some View {
    HStack(spacing: 4) {
      content
    }
    .buttonStyle(.variant(.ghost, size: .icon))
  }
}

public struct HeaderScrollView<HeaderContent: View, Content: View>: View {
  let header: HeaderContent
  let content: Content

  @State private var progress: CGFloat?

  public init(@ViewBuilder content: () -> Content, @ViewBuilder header: () -> HeaderContent) {
    self.content = content()
    self.header = header()
  }

  public var body: some View {
    VStack(spacing: 0) {
      header
        .environment(\.headerProgress, progress)
        .zIndex(1)
      KeyboardScrollView {
        VStack(alignment: .leading, spacing: 0) {
          content
        }
      }
      .environment(\.headerReport) { value in
        if progress != value { progress = value }
      }
    }
  }
}
```

```swift title="swift/Components/InputGroup.swift"
import SwiftUI

public enum InputGroupAddonAlign: CaseIterable, Sendable, Hashable {
  case inlineStart, inlineEnd, blockStart, blockEnd

  var isBlock: Bool {
    self == .blockStart || self == .blockEnd
  }
}

struct InputGroupContext: Sendable {
  var focusRequest = 0
  var addons: Set<InputGroupAddonAlign> = []
  var requestFocus: @MainActor @Sendable () -> Void = {}
}

extension EnvironmentValues {
  @Entry var inputGroup: InputGroupContext? = nil
}

struct InputGroupAddonsKey: PreferenceKey {
  static var defaultValue: Set<InputGroupAddonAlign> { [] }

  static func reduce(value: inout Set<InputGroupAddonAlign>, nextValue: () -> Set<InputGroupAddonAlign>) {
    value.formUnion(nextValue())
  }
}

struct InputGroupFocusedKey: PreferenceKey {
  static var defaultValue: Bool { false }

  static func reduce(value: inout Bool, nextValue: () -> Bool) {
    value = value || nextValue()
  }
}

struct InputGroupMultilineKey: PreferenceKey {
  static var defaultValue: Bool { false }

  static func reduce(value: inout Bool, nextValue: () -> Bool) {
    value = value || nextValue()
  }
}

struct InputGroupButtonKey: PreferenceKey {
  static var defaultValue: Bool { false }

  static func reduce(value: inout Bool, nextValue: () -> Bool) {
    value = value || nextValue()
  }
}

enum InputGroupSlot: Sendable, Equatable {
  case control
  case addon(InputGroupAddonAlign)
}

struct InputGroupSlotKey: LayoutValueKey {
  static let defaultValue = InputGroupSlot.control
}

public struct InputGroup<Content: View>: View {
  let content: Content

  @State private var focusRequest = 0
  @State private var addons: Set<InputGroupAddonAlign> = []
  @State private var focused = false
  @State private var multiline = false
  @Environment(\.isEnabled) private var isEnabled
  @Environment(\.isInvalid) private var invalid
  @Environment(\.colorScheme) private var colorScheme

  public init(@ViewBuilder content: () -> Content) {
    self.content = content()
  }

  public var body: some View {
    let request = $focusRequest
    let rounded = multiline || addons.contains(.blockStart) || addons.contains(.blockEnd)
    ButtonGroupItem(radius: rounded ? Radius.xl : Radius.lg) { shape in
      InputGroupLayout {
        content
      }
      .frame(maxWidth: .infinity, minHeight: 44)
      .environment(
        \.inputGroup,
        InputGroupContext(
          focusRequest: focusRequest,
          addons: addons,
          requestFocus: { request.wrappedValue += 1 }
        )
      )
      .onPreferenceChange(InputGroupAddonsKey.self) { addons = $0 }
      .onPreferenceChange(InputGroupFocusedKey.self) { focused = $0 }
      .onPreferenceChange(InputGroupMultilineKey.self) { multiline = $0 }
      .background(background, in: shape)
      .overlay {
        shape.strokeBorder(border, lineWidth: 1)
      }
      .contentShape(shape)
    }
    .accessibilityElement(children: .contain)
  }

  private var background: Color {
    if !isEnabled { return .controlDisabled }
    if invalid { return .danger.opacity(colorScheme == .dark ? 0.1 : 0.05) }
    return .control
  }

  private var border: Color {
    if invalid { return .danger }
    return focused ? .focus : .clear
  }
}

struct InputGroupLayout: Layout {
  private struct Rows {
    var top: [Int] = []
    var leading: [Int] = []
    var controls: [Int] = []
    var trailing: [Int] = []
    var bottom: [Int] = []
  }

  private func rows(_ subviews: Subviews) -> Rows {
    var rows = Rows()
    for index in subviews.indices {
      switch subviews[index][InputGroupSlotKey.self] {
      case .control: rows.controls.append(index)
      case .addon(.inlineStart): rows.leading.append(index)
      case .addon(.inlineEnd): rows.trailing.append(index)
      case .addon(.blockStart): rows.top.append(index)
      case .addon(.blockEnd): rows.bottom.append(index)
      }
    }
    return rows
  }

  private func middle(_ rows: Rows, subviews: Subviews, width: CGFloat?) -> [(Int, CGFloat)] {
    let fixed = (rows.leading + rows.trailing).map { ($0, subviews[$0].sizeThatFits(.unspecified).width) }
    let used = fixed.reduce(0) { $0 + $1.1 }
    let share: CGFloat
    if let width, !rows.controls.isEmpty {
      share = max(width - used, 0) / CGFloat(rows.controls.count)
    } else {
      share = 0
    }
    let widths = Dictionary(uniqueKeysWithValues: fixed)
    let ordered = rows.leading + rows.controls + rows.trailing
    return ordered.map { index in
      if let fixedWidth = widths[index] { return (index, fixedWidth) }
      return (index, width == nil ? subviews[index].sizeThatFits(.unspecified).width : share)
    }
  }

  func sizeThatFits(proposal: ProposedViewSize, subviews: Subviews, cache: inout ()) -> CGSize {
    let rows = rows(subviews)
    let width = proposal.width
    var height: CGFloat = 0
    var widest: CGFloat = 0
    for index in rows.top + rows.bottom {
      let size = subviews[index].sizeThatFits(ProposedViewSize(width: width, height: nil))
      height += size.height
      widest = max(widest, size.width)
    }
    let line = middle(rows, subviews: subviews, width: width)
    var lineHeight: CGFloat = 0
    var lineWidth: CGFloat = 0
    for (index, itemWidth) in line {
      lineHeight = max(lineHeight, subviews[index].sizeThatFits(ProposedViewSize(width: itemWidth, height: nil)).height)
      lineWidth += itemWidth
    }
    height += lineHeight
    return CGSize(width: width ?? max(widest, lineWidth), height: height)
  }

  func placeSubviews(in bounds: CGRect, proposal: ProposedViewSize, subviews: Subviews, cache: inout ()) {
    let rows = rows(subviews)
    var y = bounds.minY
    for index in rows.top {
      let size = subviews[index].sizeThatFits(ProposedViewSize(width: bounds.width, height: nil))
      subviews[index].place(at: CGPoint(x: bounds.minX, y: y), anchor: .topLeading, proposal: ProposedViewSize(width: bounds.width, height: size.height))
      y += size.height
    }
    var bottomHeight: CGFloat = 0
    for index in rows.bottom {
      bottomHeight += subviews[index].sizeThatFits(ProposedViewSize(width: bounds.width, height: nil)).height
    }
    let line = middle(rows, subviews: subviews, width: bounds.width)
    let lineHeight = max(bounds.maxY - bottomHeight - y, 0)
    var x = bounds.minX
    for (index, width) in line {
      let height = subviews[index].sizeThatFits(ProposedViewSize(width: width, height: nil)).height
      let control = subviews[index][InputGroupSlotKey.self] == .control
      let placed = control ? max(height, lineHeight) : height
      subviews[index].place(
        at: CGPoint(x: x, y: y + (lineHeight - placed) / 2),
        anchor: .topLeading,
        proposal: ProposedViewSize(width: width, height: placed)
      )
      x += width
    }
    y += lineHeight
    for index in rows.bottom {
      let size = subviews[index].sizeThatFits(ProposedViewSize(width: bounds.width, height: nil))
      subviews[index].place(at: CGPoint(x: bounds.minX, y: y), anchor: .topLeading, proposal: ProposedViewSize(width: bounds.width, height: size.height))
      y += size.height
    }
  }
}

public struct InputGroupAddon<Content: View>: View {
  let align: InputGroupAddonAlign
  let content: Content

  @State private var hasButton = false
  @Environment(\.inputGroup) private var group
  @Environment(\.isEnabled) private var isEnabled

  public init(align: InputGroupAddonAlign = .inlineStart, @ViewBuilder content: () -> Content) {
    self.align = align
    self.content = content()
  }

  public var body: some View {
    HStack(spacing: 8) {
      content
    }
    .labelStyle(ButtonLabelStyle(spacing: 8, iconSize: 16))
    .scaledFont(.base)
    .foregroundStyle(isEnabled ? Color.labelSecondary : .labelQuaternary)
    .lineLimit(1)
    .padding(.vertical, align.isBlock ? 0 : 8)
    .padding(.top, align == .blockStart ? 12 : 0)
    .padding(.bottom, align == .blockEnd ? 12 : 0)
    .padding(.leading, leading)
    .padding(.trailing, trailing)
    .frame(maxWidth: align.isBlock ? .infinity : nil, alignment: .leading)
    .contentShape(Rectangle())
    .onTapGesture { group?.requestFocus() }
    .onPreferenceChange(InputGroupButtonKey.self) { hasButton = $0 }
    .transformPreference(InputGroupButtonKey.self) { $0 = false }
    .preference(key: InputGroupAddonsKey.self, value: [align])
    .layoutValue(key: InputGroupSlotKey.self, value: .addon(align))
  }

  private var leading: CGFloat {
    switch align {
    case .inlineStart: hasButton ? 8 : 12
    case .inlineEnd: 0
    case .blockStart, .blockEnd: 12
    }
  }

  private var trailing: CGFloat {
    switch align {
    case .inlineEnd: hasButton ? 8 : 12
    case .inlineStart: 0
    case .blockStart, .blockEnd: 12
    }
  }
}

public enum InputGroupButtonSize: CaseIterable, Sendable {
  case xs, sm, iconXs, iconSm
}

public struct InputGroupButton<Label: View>: View {
  public typealias Size = InputGroupButtonSize

  let variant: VariantButtonStyle.Variant
  let size: Size
  let action: () -> Void
  let label: Label

  public init(
    variant: VariantButtonStyle.Variant = .ghost,
    size: Size = .xs,
    action: @escaping () -> Void,
    @ViewBuilder label: () -> Label
  ) {
    self.variant = variant
    self.size = size
    self.action = action
    self.label = label()
  }

  public var body: some View {
    Button(action: action) {
      label
    }
    .buttonStyle(style)
    .preference(key: InputGroupButtonKey.self, value: true)
  }

  private var style: VariantButtonStyle {
    switch size {
    case .xs:
      VariantButtonStyle(variant, size: .xs, metrics: ButtonMetrics(horizontalPadding: 6, spacing: 4, iconSize: 14, textStyle: .sm))
    case .sm:
      VariantButtonStyle(variant, size: .sm)
    case .iconXs:
      VariantButtonStyle(variant, size: .iconXs, metrics: ButtonMetrics(horizontalPadding: 0, spacing: 4, iconSize: 14, textStyle: .sm))
    case .iconSm:
      VariantButtonStyle(variant, size: .iconSm)
    }
  }
}

extension InputGroupButton where Label == Text {
  public init(
    _ title: LocalizedStringKey,
    variant: VariantButtonStyle.Variant = .ghost,
    size: Size = .xs,
    action: @escaping () -> Void
  ) {
    self.init(variant: variant, size: size, action: action) { Text(title) }
  }
}

public struct InputGroupText<Content: View>: View {
  let content: Content

  public init(@ViewBuilder content: () -> Content) {
    self.content = content()
  }

  public var body: some View {
    HStack(spacing: 8) {
      content
    }
    .labelStyle(ButtonLabelStyle(spacing: 8, iconSize: 16))
    .scaledFont(.base)
    .foregroundStyle(Color.labelSecondary)
  }
}

extension InputGroupText where Content == Text {
  public init(_ text: LocalizedStringKey) {
    self.init { Text(text) }
  }

  public init(verbatim text: String) {
    self.init { Text(verbatim: text) }
  }
}

public struct InputGroupInput: View {
  let title: LocalizedStringKey
  let text: Binding<String>

  @Environment(\.inputGroup) private var group
  @Environment(\.isEnabled) private var isEnabled

  public init(_ title: LocalizedStringKey, text: Binding<String>) {
    self.title = title
    self.text = text
  }

  public var body: some View {
    let addons = group?.addons ?? []
    TextField(title, text: text)
      .textFieldStyle(.plain)
      .scaledFont(.base)
      .foregroundStyle(isEnabled ? Color.label : .labelQuaternary)
      .tint(Color.accent)
      .padding(.leading, addons.contains(.inlineStart) ? 6 : 12)
      .padding(.trailing, addons.contains(.inlineEnd) ? 6 : 12)
      .frame(maxWidth: .infinity, minHeight: 44)
      .modifier(InputGroupFocus(request: group?.focusRequest ?? 0))
      .layoutValue(key: InputGroupSlotKey.self, value: .control)
  }
}

public struct InputGroupTextarea: View {
  let title: LocalizedStringKey
  let text: Binding<String>
  let lineLimit: ClosedRange<Int>

  @Environment(\.inputGroup) private var group
  @Environment(\.isEnabled) private var isEnabled

  public init(_ title: LocalizedStringKey, text: Binding<String>, lineLimit: ClosedRange<Int> = 2...8) {
    self.title = title
    self.text = text
    self.lineLimit = lineLimit
  }

  public var body: some View {
    TextField(title, text: text, axis: .vertical)
      .textFieldStyle(.plain)
      .lineLimit(lineLimit)
      .scaledFont(.base)
      .foregroundStyle(isEnabled ? Color.label : .labelQuaternary)
      .tint(Color.accent)
      .padding(.horizontal, 12)
      .padding(.vertical, 10)
      .frame(maxWidth: .infinity, alignment: .topLeading)
      .modifier(InputGroupFocus(request: group?.focusRequest ?? 0))
      .preference(key: InputGroupMultilineKey.self, value: true)
      .layoutValue(key: InputGroupSlotKey.self, value: .control)
  }
}

struct InputGroupFocus: ViewModifier {
  let request: Int

  @FocusState private var focused: Bool

  func body(content: Content) -> some View {
    content
      .focused($focused)
      .contentShape(Rectangle())
      .onTapGesture { focused = true }
      .onChange(of: request) { focused = true }
      .preference(key: InputGroupFocusedKey.self, value: focused)
  }
}
```

```swift title="swift/Components/Item.swift"
import SwiftUI

public enum ItemVariant: CaseIterable, Sendable {
  case `default`, outline, muted
}

public enum ItemSize: CaseIterable, Sendable {
  case `default`, sm, xs

  var horizontalPadding: CGFloat {
    switch self {
    case .default: 16
    case .sm: 14
    case .xs: 12
    }
  }

  var verticalPadding: CGFloat {
    switch self {
    case .default: 14
    case .sm: 12
    case .xs: 10
    }
  }

  var gap: CGFloat {
    self == .xs ? 10 : 14
  }

  var groupGap: CGFloat {
    switch self {
    case .default: 16
    case .sm: 10
    case .xs: 8
    }
  }

  var mediaImage: CGFloat {
    switch self {
    case .default: 40
    case .sm: 32
    case .xs: 24
    }
  }
}

public enum ItemGroupVariant: CaseIterable, Sendable {
  case `default`, inset
}

extension EnvironmentValues {
  @Entry var itemSize: ItemSize = .default
  @Entry var itemGroupInset = false
  @Entry var itemHasDescription = false
}

struct ItemGapKey: PreferenceKey {
  static var defaultValue: CGFloat? { nil }

  static func reduce(value: inout CGFloat?, nextValue: () -> CGFloat?) {
    guard let next = nextValue() else { return }
    value = min(value ?? next, next)
  }
}

struct ItemDescriptionKey: PreferenceKey {
  static var defaultValue: Bool { false }

  static func reduce(value: inout Bool, nextValue: () -> Bool) {
    value = value || nextValue()
  }
}

enum ItemSlot: Sendable {
  case media, content, actions, fullRow, other
}

struct ItemSlotKey: LayoutValueKey {
  static let defaultValue = ItemSlot.other
}

public struct ItemGroup<Content: View>: View {
  let variant: ItemGroupVariant
  let content: Content

  @State private var gap: CGFloat?

  public init(_ variant: ItemGroupVariant = .default, @ViewBuilder content: () -> Content) {
    self.variant = variant
    self.content = content()
  }

  public var body: some View {
    let inset = variant == .inset
    let shape = RoundedRectangle(cornerRadius: Radius.xl2, style: .continuous)
    VStack(alignment: .leading, spacing: inset ? 0 : gap ?? ItemSize.default.groupGap) {
      content
    }
    .frame(maxWidth: .infinity, alignment: .leading)
    .environment(\.itemGroupInset, inset)
    .onPreferenceChange(ItemGapKey.self) { gap = $0 }
    .transformPreference(ItemGapKey.self) { $0 = nil }
    .background(inset ? Color.surfaceSecondary : .clear, in: shape)
    .clipShape(inset ? AnyShape(shape) : AnyShape(Rectangle()))
    .accessibilityElement(children: .contain)
  }
}

public struct ItemSeparator: View {
  @Environment(\.itemGroupInset) private var inset

  public init() {}

  public var body: some View {
    Separator()
      .padding(.vertical, inset ? 0 : 8)
      .padding(.leading, inset ? 16 : 0)
  }
}

public struct Item<Content: View>: View {
  let variant: ItemVariant
  let size: ItemSize
  let action: (() -> Void)?
  let content: Content

  @State private var hasDescription = false
  @Environment(\.itemGroupInset) private var inset

  public init(
    _ variant: ItemVariant = .default,
    size: ItemSize = .default,
    action: (() -> Void)? = nil,
    @ViewBuilder content: () -> Content
  ) {
    self.variant = variant
    self.size = size
    self.action = action
    self.content = content()
  }

  public var body: some View {
    Group {
      if let action {
        Button(action: action) {
          surface
        }
        .buttonStyle(ItemButtonStyle(variant: variant, inset: inset))
      } else {
        surface.background(ItemBackground(variant: variant, inset: inset, pressed: false))
      }
    }
    .preference(key: ItemGapKey.self, value: size.groupGap)
  }

  private var surface: some View {
    ItemLayout(gap: size.gap, topAlignMedia: hasDescription) {
      content
    }
    .scaledFont(.base)
    .foregroundStyle(Color.label)
    .padding(.horizontal, size.horizontalPadding)
    .padding(.vertical, size.verticalPadding)
    .frame(maxWidth: .infinity, alignment: .leading)
    .environment(\.itemSize, size)
    .environment(\.itemHasDescription, hasDescription)
    .onPreferenceChange(ItemDescriptionKey.self) { hasDescription = $0 }
    .contentShape(Rectangle())
  }
}

private struct ItemBackground: View {
  let variant: ItemVariant
  let inset: Bool
  let pressed: Bool

  var body: some View {
    let shape = RoundedRectangle(cornerRadius: inset ? 0 : Radius.xl, style: .continuous)
    ZStack {
      shape.fill(variant == .muted ? Color.surfaceSecondary.opacity(0.5) : .clear)
      if pressed {
        shape.fill(Color.itemPressed)
      }
      if variant == .outline {
        shape.strokeBorder(Color.separator)
      }
    }
  }
}

private struct ItemButtonStyle: ButtonStyle {
  let variant: ItemVariant
  let inset: Bool

  @Environment(\.isEnabled) private var isEnabled

  func makeBody(configuration: Configuration) -> some View {
    configuration.label
      .background(ItemBackground(variant: variant, inset: inset, pressed: configuration.isPressed && isEnabled))
      .opacity(isEnabled ? 1 : 0.5)
  }
}

struct ItemLayout: Layout {
  var gap: CGFloat
  var topAlignMedia: Bool

  private struct Line {
    var indices: [Int]
    var full: Bool
  }

  private func lines(_ subviews: Subviews) -> [Line] {
    var result: [Line] = []
    var current: [Int] = []
    for index in subviews.indices {
      if subviews[index][ItemSlotKey.self] == .fullRow {
        if !current.isEmpty { result.append(Line(indices: current, full: false)) }
        current = []
        result.append(Line(indices: [index], full: true))
      } else {
        current.append(index)
      }
    }
    if !current.isEmpty { result.append(Line(indices: current, full: false)) }
    return result
  }

  private func widths(_ line: Line, subviews: Subviews, width: CGFloat?) -> [CGFloat] {
    if line.full {
      return [width ?? subviews[line.indices[0]].sizeThatFits(.unspecified).width]
    }
    let spacing = gap * CGFloat(max(line.indices.count - 1, 0))
    let flexible = line.indices.first { subviews[$0][ItemSlotKey.self] == .content }
    var fixed: [Int: CGFloat] = [:]
    for index in line.indices where index != flexible {
      fixed[index] = subviews[index].sizeThatFits(.unspecified).width
    }
    let used = fixed.values.reduce(0, +) + spacing
    return line.indices.map { index in
      if index == flexible {
        if let width { return max(width - used, 0) }
        return subviews[index].sizeThatFits(.unspecified).width
      }
      return fixed[index] ?? 0
    }
  }

  func sizeThatFits(proposal: ProposedViewSize, subviews: Subviews, cache: inout ()) -> CGSize {
    var height: CGFloat = 0
    var widest: CGFloat = 0
    let all = lines(subviews)
    for (position, line) in all.enumerated() {
      let sizes = widths(line, subviews: subviews, width: proposal.width)
      var lineHeight: CGFloat = 0
      for (index, width) in zip(line.indices, sizes) {
        lineHeight = max(lineHeight, subviews[index].sizeThatFits(ProposedViewSize(width: width, height: nil)).height)
      }
      let spacing = gap * CGFloat(max(line.indices.count - 1, 0))
      widest = max(widest, sizes.reduce(0, +) + (line.full ? 0 : spacing))
      height += lineHeight + (position > 0 ? gap : 0)
    }
    return CGSize(width: proposal.width ?? widest, height: height)
  }

  func placeSubviews(in bounds: CGRect, proposal: ProposedViewSize, subviews: Subviews, cache: inout ()) {
    var y = bounds.minY
    for line in lines(subviews) {
      let sizes = widths(line, subviews: subviews, width: bounds.width)
      var heights: [CGFloat] = []
      for (index, width) in zip(line.indices, sizes) {
        heights.append(subviews[index].sizeThatFits(ProposedViewSize(width: width, height: nil)).height)
      }
      let lineHeight = heights.max() ?? 0
      var x = bounds.minX
      for (offset, index) in line.indices.enumerated() {
        let width = sizes[offset]
        let height = heights[offset]
        let top = topAlignMedia && subviews[index][ItemSlotKey.self] == .media
        let originY = top ? y + 2 : y + (lineHeight - height) / 2
        subviews[index].place(
          at: CGPoint(x: x, y: originY),
          anchor: .topLeading,
          proposal: ProposedViewSize(width: width, height: height)
        )
        x += width + gap
      }
      y += lineHeight + gap
    }
  }
}

public enum ItemMediaVariant: CaseIterable, Sendable {
  case `default`, icon, image
}

public struct ItemMedia<Content: View>: View {
  let variant: ItemMediaVariant
  let content: Content

  @Environment(\.itemSize) private var size

  public init(_ variant: ItemMediaVariant = .default, @ViewBuilder content: () -> Content) {
    self.variant = variant
    self.content = content()
  }

  public var body: some View {
    Group {
      switch variant {
      case .default:
        HStack(spacing: 8) { content }
      case .icon:
        content.frame(width: 16, height: 16)
      case .image:
        content
          .scaledToFill()
          .frame(width: size.mediaImage, height: size.mediaImage)
          .clipShape(RoundedRectangle(cornerRadius: size == .xs ? Radius.sm : Radius.md, style: .continuous))
      }
    }
    .accessibilityHidden(variant != .default)
    .layoutValue(key: ItemSlotKey.self, value: .media)
  }
}

public struct ItemContent<Content: View>: View {
  let content: Content

  @Environment(\.itemSize) private var size

  public init(@ViewBuilder content: () -> Content) {
    self.content = content()
  }

  public var body: some View {
    VStack(alignment: .leading, spacing: size == .xs ? 2 : 4) {
      content
    }
    .frame(maxWidth: .infinity, alignment: .leading)
    .layoutValue(key: ItemSlotKey.self, value: .content)
  }
}

public struct ItemTitle<Content: View>: View {
  let content: Content

  public init(@ViewBuilder content: () -> Content) {
    self.content = content()
  }

  public var body: some View {
    HStack(spacing: 8) {
      content
    }
    .scaledTextStyle(.base, weight: .semibold)
    .foregroundStyle(Color.label)
    .lineLimit(1)
    .accessibilityElement(children: .combine)
  }
}

extension ItemTitle where Content == Text {
  public init(_ title: LocalizedStringKey) {
    self.init { Text(title) }
  }

  public init(verbatim title: String) {
    self.init { Text(verbatim: title) }
  }
}

public struct ItemDescription: View {
  let text: Text

  public init(_ description: LocalizedStringKey) {
    text = Text(description)
  }

  public init(verbatim description: String) {
    text = Text(verbatim: description)
  }

  public var body: some View {
    text
      .scaledTextStyle(.sm)
      .foregroundStyle(Color.labelSecondary)
      .multilineTextAlignment(.leading)
      .lineLimit(2)
      .fixedSize(horizontal: false, vertical: true)
      .preference(key: ItemDescriptionKey.self, value: true)
  }
}

public struct ItemActions<Content: View>: View {
  let content: Content

  public init(@ViewBuilder content: () -> Content) {
    self.content = content()
  }

  public var body: some View {
    HStack(spacing: 8) {
      content
    }
    .fixedSize()
    .layoutValue(key: ItemSlotKey.self, value: .actions)
  }
}

public struct ItemHeader<Content: View>: View {
  let content: Content

  public init(@ViewBuilder content: () -> Content) {
    self.content = content()
  }

  public var body: some View {
    SpaceBetween(spacing: 8) {
      content
    }
    .frame(maxWidth: .infinity)
    .layoutValue(key: ItemSlotKey.self, value: .fullRow)
  }
}

public struct ItemFooter<Content: View>: View {
  let content: Content

  public init(@ViewBuilder content: () -> Content) {
    self.content = content()
  }

  public var body: some View {
    SpaceBetween(spacing: 8) {
      content
    }
    .frame(maxWidth: .infinity)
    .layoutValue(key: ItemSlotKey.self, value: .fullRow)
  }
}

struct SpaceBetween: Layout {
  var spacing: CGFloat

  func sizeThatFits(proposal: ProposedViewSize, subviews: Subviews, cache: inout ()) -> CGSize {
    let sizes = subviews.map { $0.sizeThatFits(.unspecified) }
    let natural = sizes.reduce(0) { $0 + $1.width } + spacing * CGFloat(max(subviews.count - 1, 0))
    return CGSize(width: proposal.width ?? natural, height: sizes.map(\.height).max() ?? 0)
  }

  func placeSubviews(in bounds: CGRect, proposal: ProposedViewSize, subviews: Subviews, cache: inout ()) {
    let sizes = subviews.map { $0.sizeThatFits(.unspecified) }
    let total = sizes.reduce(0) { $0 + $1.width }
    let gaps = CGFloat(max(subviews.count - 1, 0))
    let gap = subviews.count > 1 ? max(spacing, (bounds.width - total) / gaps) : 0
    var x = bounds.minX
    for (index, view) in subviews.enumerated() {
      let size = sizes[index]
      view.place(
        at: CGPoint(x: x, y: bounds.midY - size.height / 2),
        anchor: .topLeading,
        proposal: ProposedViewSize(size)
      )
      x += size.width + gap
    }
  }
}
```

```swift title="swift/Components/KeyboardScrollView.swift"
import SwiftUI
import UIKit

public struct KeyboardScrollView<Content: View>: View {
  let showsIndicators: Bool
  let content: Content

  public init(showsIndicators: Bool = true, @ViewBuilder content: () -> Content) {
    self.showsIndicators = showsIndicators
    self.content = content()
  }

  public var body: some View {
    ScrollView(.vertical, showsIndicators: showsIndicators) {
      content
        .frame(maxWidth: .infinity, alignment: .topLeading)
        .background {
          Color.clear
            .contentShape(Rectangle())
            .onTapGesture { KeyboardScrollView.dismissKeyboard() }
        }
    }
    .scrollDismissesKeyboard(.interactively)
  }

  @MainActor
  static func dismissKeyboard() {
    UIApplication.shared.sendAction(#selector(UIResponder.resignFirstResponder), to: nil, from: nil, for: nil)
  }
}
```

```swift title="swift/Components/Screen.swift"
import SwiftUI

extension EnvironmentValues {
  @Entry var screenBackground: Color = .surface
}

public struct Screen<Content: View>: View {
  public enum Background: CaseIterable, Sendable {
    case surface, surfaceSecondary

    var color: Color {
      switch self {
      case .surface: .surface
      case .surfaceSecondary: .surfaceSecondary
      }
    }
  }

  let edges: Edge.Set
  let background: Background
  let content: Content

  public init(
    edges: Edge.Set = .all,
    background: Background = .surface,
    @ViewBuilder content: () -> Content
  ) {
    self.edges = edges
    self.background = background
    self.content = content()
  }

  public var body: some View {
    VStack(spacing: 0) {
      content
    }
    .frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .top)
    .ignoresSafeArea(.container, edges: Edge.Set.all.subtracting(edges))
    .foregroundStyle(Color.label)
    .background(background.color.ignoresSafeArea())
    .environment(\.screenBackground, background.color)
  }
}

public struct ScreenContent<Content: View>: View {
  let scroll: Bool
  let padded: Bool
  let content: Content

  public init(scroll: Bool = true, padded: Bool = true, @ViewBuilder content: () -> Content) {
    self.scroll = scroll
    self.padded = padded
    self.content = content()
  }

  public var body: some View {
    if scroll {
      KeyboardScrollView {
        stack
      }
    } else {
      stack
        .frame(maxHeight: .infinity, alignment: .top)
    }
  }

  private var stack: some View {
    VStack(alignment: .leading, spacing: 16) {
      content
    }
    .padding(padded ? 16 : 0)
    .frame(maxWidth: .infinity, alignment: .leading)
  }
}
```

```swift title="swift/Components/Separator.swift"
import SwiftUI

public struct Separator: View {
  let orientation: Axis

  public init(_ orientation: Axis = .horizontal) {
    self.orientation = orientation
  }

  public var body: some View {
    Rectangle()
      .fill(Color.separator)
      .frame(width: orientation == .vertical ? 1 : nil, height: orientation == .horizontal ? 1 : nil)
      .frame(maxWidth: orientation == .horizontal ? .infinity : nil, maxHeight: orientation == .vertical ? .infinity : nil)
      .accessibilityHidden(true)
  }
}
```

```swift title="swift/Components/Switch.swift"
import SwiftUI

public struct SwitchStyle: ToggleStyle {
  public enum Size: CaseIterable, Sendable {
    case `default`, sm

    var track: CGSize {
      switch self {
      case .default: CGSize(width: 52, height: 24)
      case .sm: CGSize(width: 44, height: 20)
      }
    }

    var thumbHeight: CGFloat {
      switch self {
      case .default: 20
      case .sm: 16
      }
    }

    func thumbWidth(pressed: Bool) -> CGFloat {
      switch self {
      case .default: pressed ? 36 : 32
      case .sm: pressed ? 30 : 26
      }
    }

    func travel(pressed: Bool) -> CGFloat {
      switch self {
      case .default: pressed ? 12 : 16
      case .sm: pressed ? 10 : 14
      }
    }
  }

  let size: Size

  public init(size: Size = .default) {
    self.size = size
  }

  public func makeBody(configuration: Configuration) -> some View {
    HapticButton(style: PressReader { pressed in
      HStack(spacing: 12) {
        SwitchTrack(isOn: configuration.isOn, pressed: pressed, size: size)
        SwitchLabel(label: configuration.label)
      }
      .contentShape(Rectangle().inset(by: -8))
    }) {
      configuration.isOn.toggle()
      return true
    }
    .accessibilityElement(children: .combine)
    .accessibilityRemoveTraits(.isButton)
    .accessibilityAddTraits(.isToggle)
    .accessibilityValue(configuration.isOn ? Text("On") : Text("Off"))
  }
}

private struct SwitchLabel<Label: View>: View {
  let label: Label

  var body: some View {
    if #available(iOS 18, *) {
      SwitchLabelVisibility(label: label)
    } else {
      label
    }
  }
}

@available(iOS 18, *)
private struct SwitchLabelVisibility<Label: View>: View {
  let label: Label

  @Environment(\.labelsVisibility) private var visibility

  var body: some View {
    if visibility != .hidden {
      label
    }
  }
}

private struct SwitchTrack: View {
  let isOn: Bool
  let pressed: Bool
  let size: SwitchStyle.Size

  @Environment(\.isEnabled) private var isEnabled
  @Environment(\.isInvalid) private var invalid
  @Environment(\.colorScheme) private var colorScheme
  @Environment(\.accessibilityReduceMotion) private var reduceMotion

  var body: some View {
    let squeezed = pressed && isEnabled
    ZStack(alignment: .leading) {
      Capsule().fill(fill)
      Capsule().strokeBorder(border, lineWidth: 2)
      Capsule()
        .fill(colorScheme == .dark ? Color.label : .surface)
        .frame(width: size.thumbWidth(pressed: squeezed), height: size.thumbHeight)
        .shadow(.thumb)
        .offset(x: 2 + (isOn ? size.travel(pressed: squeezed) : 0))
    }
    .frame(width: size.track.width, height: size.track.height)
    .animation(reduceMotion ? nil : .timingCurve(0.32, 0.72, 0, 1, duration: 0.2), value: isOn)
    .animation(reduceMotion ? nil : .timingCurve(0.32, 0.72, 0, 1, duration: 0.2), value: squeezed)
  }

  private var fill: Color {
    if isOn { return isEnabled ? .accent : .accentDisabled }
    return isEnabled ? .labelQuaternary : .controlDisabled
  }

  private var border: Color {
    if invalid && isEnabled { return .danger }
    return isOn && isEnabled ? .accent : .clear
  }
}

extension ToggleStyle where Self == SwitchStyle {
  public static func `switch`(size: SwitchStyle.Size) -> SwitchStyle {
    SwitchStyle(size: size)
  }
}
```

```swift title="swift/Components/TextVariant.swift"
import SwiftUI

public enum TextVariant: CaseIterable, Sendable {
  case `default`, h1, h2, h3, h4, p, blockquote, code, lead, large, small, muted

  var style: TextStyle {
    switch self {
    case .h1: .xl3
    case .h2: .xl2
    case .h3: .xl
    case .h4, .lead, .large: .lg
    case .code, .small, .muted: .sm
    default: .base
    }
  }

  var weight: Font.Weight {
    switch self {
    case .h1, .h2: .bold
    case .h3, .h4, .large, .code: .semibold
    case .small: .medium
    default: .regular
    }
  }

  var color: Color {
    switch self {
    case .lead, .muted: .labelSecondary
    default: .label
    }
  }

  var isHeading: Bool {
    switch self {
    case .h1, .h2, .h3, .h4: true
    default: false
    }
  }
}

private struct TextVariantModifier: ViewModifier {
  let variant: TextVariant

  func body(content: Content) -> some View {
    switch variant {
    case .blockquote:
      styled(content)
        .italic()
        .padding(.leading, 12)
        .overlay(alignment: .leading) {
          Rectangle().fill(Color.separator).frame(width: 2)
        }
        .padding(.top, 16)
    case .code:
      styled(content)
        .monospaced()
        .padding(.horizontal, 4)
        .padding(.vertical, 2)
        .background(Color.surfaceSecondary, in: RoundedRectangle(cornerRadius: Radius.sm, style: .continuous))
    case .p:
      styled(content).padding(.top, 12)
    default:
      styled(content)
    }
  }

  private func styled(_ content: Content) -> some View {
    content
      .scaledTextStyle(variant.style, weight: variant.weight)
      .foregroundStyle(variant.color)
      .accessibilityAddTraits(variant.isHeading ? .isHeader : [])
  }
}

extension View {
  public func textVariant(_ variant: TextVariant) -> some View {
    modifier(TextVariantModifier(variant: variant))
  }
}

private struct ScaledTextStyleModifier: ViewModifier {
  let style: TextStyle
  let weight: Font.Weight

  @ScaledMetric(relativeTo: .body) private var scale: CGFloat = 1

  func body(content: Content) -> some View {
    let size = style.size * scale
    let lineSpacing = max(0, style.lineHeight * scale - UIFont.systemFont(ofSize: size).lineHeight)
    content
      .font(.system(size: size, weight: weight))
      .tracking(style.letterSpacing)
      .lineSpacing(lineSpacing)
      .padding(.vertical, lineSpacing / 2)
  }
}

extension View {
  func scaledTextStyle(_ style: TextStyle, weight: Font.Weight = .regular) -> some View {
    modifier(ScaledTextStyleModifier(style: style, weight: weight))
  }

  func scaledFont(_ style: TextStyle, weight: Font.Weight = .regular) -> some View {
    modifier(ScaledFontModifier(style: style, weight: weight))
  }
}

private struct ScaledFontModifier: ViewModifier {
  let style: TextStyle
  let weight: Font.Weight

  @ScaledMetric(relativeTo: .body) private var scale: CGFloat = 1

  func body(content: Content) -> some View {
    content
      .font(.system(size: style.size * scale, weight: weight))
      .tracking(style.letterSpacing)
  }
}
```

5. Add the files to your app target.

**Jetpack Compose**

1. Set `minSdk` to 24 or higher and add the dependencies:

```kotlin title="build.gradle.kts"
implementation(platform("androidx.compose:compose-bom:2026.09.00"))
implementation("androidx.compose.foundation:foundation")
implementation("androidx.compose.ui:ui")
implementation("com.adamglin:phosphor-icon-android:1.0.0")
```

2. Copy the theme files every view uses:

```kt title="kotlin/theme/Theme.kt"
package com.esuiss.ui.theme

import androidx.compose.foundation.isSystemInDarkTheme
import androidx.compose.runtime.Composable
import androidx.compose.runtime.CompositionLocalProvider
import androidx.compose.runtime.Immutable
import androidx.compose.runtime.staticCompositionLocalOf
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.dropShadow
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.Shape
import androidx.compose.ui.graphics.shadow.Shadow as DropShadow
import androidx.compose.ui.text.TextStyle
import androidx.compose.ui.text.style.LineHeightStyle
import androidx.compose.ui.unit.Dp
import androidx.compose.ui.unit.DpOffset
import androidx.compose.ui.unit.em
import androidx.compose.ui.unit.sp

internal fun textStyle(size: Double, lineHeight: Double, letterSpacing: Double) = TextStyle(
    fontSize = size.sp,
    lineHeight = lineHeight.sp,
    letterSpacing = letterSpacing.em,
    lineHeightStyle = LineHeightStyle(
        alignment = LineHeightStyle.Alignment.Center,
        trim = LineHeightStyle.Trim.None,
    ),
)

@Immutable
data class Shadow(
    val offsetX: Dp,
    val offsetY: Dp,
    val blur: Dp,
    val color: Color,
)

fun Modifier.shadow(shadow: Shadow, shape: Shape): Modifier = dropShadow(
    shape,
    DropShadow(
        radius = shadow.blur,
        color = shadow.color,
        offset = DpOffset(shadow.offsetX, shadow.offsetY),
    ),
)

val LocalColors = staticCompositionLocalOf { LightColors }

object EsuissTheme {
    val colors: Colors
        @Composable get() = LocalColors.current

    val typography: Typography
        get() = Typography

    val radius: Radius
        get() = Radius

    val shadows: Shadows
        get() = Shadows
}

@Composable
fun EsuissTheme(
    darkTheme: Boolean = isSystemInDarkTheme(),
    content: @Composable () -> Unit,
) {
    CompositionLocalProvider(
        LocalColors provides if (darkTheme) DarkColors else LightColors,
        content = content,
    )
}
```

```kt title="kotlin/theme/Tokens.kt"
package com.esuiss.ui.theme

import androidx.compose.runtime.Immutable
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.unit.dp

@Immutable
data class Colors(
    val surface: Color,
    val surfaceSecondary: Color,
    val surfaceTertiary: Color,
    val surfaceRaised: Color,
    val label: Color,
    val labelSecondary: Color,
    val labelTertiary: Color,
    val labelQuaternary: Color,
    val control: Color,
    val controlPressed: Color,
    val controlSelected: Color,
    val controlDisabled: Color,
    val onControlSelected: Color,
    val itemPressed: Color,
    val itemSelected: Color,
    val separator: Color,
    val separatorStrong: Color,
    val accent: Color,
    val accentPressed: Color,
    val accentSelected: Color,
    val accentDisabled: Color,
    val onAccent: Color,
    val accentSurface: Color,
    val accentSurfacePressed: Color,
    val link: Color,
    val focus: Color,
    val scrim: Color,
    val media: Color,
    val onMedia: Color,
    val danger: Color,
    val dangerSurface: Color,
    val dangerSurfacePressed: Color,
    val success: Color,
    val successSurface: Color,
    val warning: Color,
    val warningSurface: Color,
    val blue: Color,
    val green: Color,
    val orange: Color,
    val red: Color,
    val yellow: Color,
    val purple: Color,
    val pink: Color,
    val indigo: Color,
    val teal: Color,
    val mint: Color,
    val cyan: Color,
    val brown: Color,
    val gray: Color,
    val isDark: Boolean,
)

val LightColors = Colors(
    surface = Color(0xFFFFFFFF),
    surfaceSecondary = Color(0xFFF5F5F7),
    surfaceTertiary = Color(0xFFE8E8ED),
    surfaceRaised = Color(0xFFFFFFFF),
    label = Color(0xFF1D1D1F),
    labelSecondary = Color(0xFF6E6E73),
    labelTertiary = Color(0xFF86868B),
    labelQuaternary = Color(0xFFD2D2D7),
    control = Color(0xFF000000).copy(alpha = 0.04f),
    controlPressed = Color(0xFF000000).copy(alpha = 0.12f),
    controlSelected = Color(0xFF1D1D1F),
    controlDisabled = Color(0xFF000000).copy(alpha = 0.03f),
    onControlSelected = Color(0xFFFFFFFF),
    itemPressed = Color(0xFF000000).copy(alpha = 0.08f),
    itemSelected = Color(0xFF000000).copy(alpha = 0.06f),
    separator = Color(0xFFD2D2D7),
    separatorStrong = Color(0xFF86868B),
    accent = Color(0xFF0071E3),
    accentPressed = Color(0xFF005BB8),
    accentSelected = Color(0xFF0071E3),
    accentDisabled = Color(0xFF0071E3).copy(alpha = 0.4f),
    onAccent = Color(0xFFFFFFFF),
    accentSurface = Color(0xFF0071E3).copy(alpha = 0.09f),
    accentSurfacePressed = Color(0xFF0071E3).copy(alpha = 0.18f),
    link = Color(0xFF0066CC),
    focus = Color(0xFF0071E3),
    scrim = Color(0xFF000000).copy(alpha = 0.48f),
    media = Color(0xFF000000),
    onMedia = Color(0xFFFFFFFF),
    danger = Color(0xFFD0000A),
    dangerSurface = Color(0xFFD70015).copy(alpha = 0.08f),
    dangerSurfacePressed = Color(0xFFD70015).copy(alpha = 0.16f),
    success = Color(0xFF008009),
    successSurface = Color(0xFFEFFAF1),
    warning = Color(0xFFB64400),
    warningSurface = Color(0xFFFFF5EA),
    blue = Color(0xFF007AFF),
    green = Color(0xFF34C759),
    orange = Color(0xFFFF9500),
    red = Color(0xFFFF3B30),
    yellow = Color(0xFFFFCC00),
    purple = Color(0xFFAF52DE),
    pink = Color(0xFFFF2D55),
    indigo = Color(0xFF5856D6),
    teal = Color(0xFF30B0C7),
    mint = Color(0xFF00C7BE),
    cyan = Color(0xFF32ADE6),
    brown = Color(0xFFA2845E),
    gray = Color(0xFF8E8E93),
    isDark = false,
)

val DarkColors = Colors(
    surface = Color(0xFF000000),
    surfaceSecondary = Color(0xFF161617),
    surfaceTertiary = Color(0xFF2C2C2E),
    surfaceRaised = Color(0xFF1D1D1F),
    label = Color(0xFFF5F5F7),
    labelSecondary = Color(0xFFA1A1A6),
    labelTertiary = Color(0xFF86868B),
    labelQuaternary = Color(0xFF424245),
    control = Color(0xFFFFFFFF).copy(alpha = 0.1f),
    controlPressed = Color(0xFFFFFFFF).copy(alpha = 0.22f),
    controlSelected = Color(0xFFF5F5F7),
    controlDisabled = Color(0xFFFFFFFF).copy(alpha = 0.05f),
    onControlSelected = Color(0xFF000000),
    itemPressed = Color(0xFFFFFFFF).copy(alpha = 0.12f),
    itemSelected = Color(0xFFFFFFFF).copy(alpha = 0.1f),
    separator = Color(0xFF424245),
    separatorStrong = Color(0xFF6E6E73),
    accent = Color(0xFF0071E3),
    accentPressed = Color(0xFF004D9E),
    accentSelected = Color(0xFF0071E3),
    accentDisabled = Color(0xFF0071E3).copy(alpha = 0.4f),
    onAccent = Color(0xFFFFFFFF),
    accentSurface = Color(0xFF0071E3).copy(alpha = 0.18f),
    accentSurfacePressed = Color(0xFF0071E3).copy(alpha = 0.3f),
    link = Color(0xFF2997FF),
    focus = Color(0xFF0071E3),
    scrim = Color(0xFF000000).copy(alpha = 0.48f),
    media = Color(0xFF000000),
    onMedia = Color(0xFFFFFFFF),
    danger = Color(0xFFFF5447),
    dangerSurface = Color(0xFFFF453A).copy(alpha = 0.2f),
    dangerSurfacePressed = Color(0xFFFF453A).copy(alpha = 0.36f),
    success = Color(0xFF30D158),
    successSurface = Color(0xFF30D158).copy(alpha = 0.16f),
    warning = Color(0xFFFF9F0A),
    warningSurface = Color(0xFFFF9F0A).copy(alpha = 0.16f),
    blue = Color(0xFF0A84FF),
    green = Color(0xFF30D158),
    orange = Color(0xFFFF9F0A),
    red = Color(0xFFFF453A),
    yellow = Color(0xFFFFD60A),
    purple = Color(0xFFBF5AF2),
    pink = Color(0xFFFF375F),
    indigo = Color(0xFF5E5CE6),
    teal = Color(0xFF40C8E0),
    mint = Color(0xFF66D4CF),
    cyan = Color(0xFF64D2FF),
    brown = Color(0xFFAC8E68),
    gray = Color(0xFF8E8E93),
    isDark = true,
)

object Radius {
    val xs = 3.dp
    val sm = 5.dp
    val md = 8.dp
    val lg = 10.dp
    val xl = 12.dp
    val xl2 = 18.dp
    val xl3 = 28.dp
    val full = 9999.dp
}

object Typography {
    val xs3 = textStyle(11.0, 13.0, 0.006)
    val xs2 = textStyle(12.0, 16.0, 0.0)
    val xs = textStyle(13.0, 18.0, -0.006)
    val sm = textStyle(15.0, 20.0, -0.016)
    val md = textStyle(16.0, 21.0, -0.02)
    val base = textStyle(17.0, 22.0, -0.026)
    val lg = textStyle(20.0, 25.0, -0.023)
    val xl = textStyle(22.0, 28.0, -0.012)
    val xl2 = textStyle(28.0, 34.0, 0.014)
    val xl3 = textStyle(34.0, 41.0, 0.012)

    val all = listOf(xs3, xs2, xs, sm, md, base, lg, xl, xl2, xl3)
}

object Shadows {
    val md = Shadow(2.dp, 4.dp, 12.dp, Color.Black.copy(alpha = 0.08f))
    val lg = Shadow(0.dp, 4.dp, 24.dp, Color.Black.copy(alpha = 0.12f))
}
```

3. Copy the source and every file it uses:

```kt title="kotlin/blocks/SettingsDevice.kt"
package com.esuiss.ui.blocks

import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.rememberScrollState
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.foundation.text.BasicText
import androidx.compose.foundation.verticalScroll
import androidx.compose.runtime.Composable
import androidx.compose.runtime.Immutable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.saveable.rememberSaveable
import androidx.compose.runtime.setValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.vector.ImageVector
import androidx.compose.ui.input.nestedscroll.nestedScroll
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.text.style.TextAlign
import androidx.compose.ui.unit.dp
import com.adamglin.PhosphorIcons
import com.adamglin.phosphoricons.Bold
import com.adamglin.phosphoricons.bold.Airplane
import com.adamglin.phosphoricons.bold.Bell
import com.adamglin.phosphoricons.bold.Bluetooth
import com.adamglin.phosphoricons.bold.CaretRight
import com.adamglin.phosphoricons.bold.CellSignalFull
import com.adamglin.phosphoricons.bold.Gear
import com.adamglin.phosphoricons.bold.Hourglass
import com.adamglin.phosphoricons.bold.MagnifyingGlass
import com.adamglin.phosphoricons.bold.Moon
import com.adamglin.phosphoricons.bold.SpeakerHigh
import com.adamglin.phosphoricons.bold.Sun
import com.adamglin.phosphoricons.bold.WifiHigh
import com.esuiss.ui.components.Avatar
import com.esuiss.ui.components.AvatarSize
import com.esuiss.ui.components.Header
import com.esuiss.ui.components.HeaderLargeTitle
import com.esuiss.ui.components.HeaderTitle
import com.esuiss.ui.components.Icon
import com.esuiss.ui.components.InputGroup
import com.esuiss.ui.components.InputGroupAddon
import com.esuiss.ui.components.InputGroupInput
import com.esuiss.ui.components.Item
import com.esuiss.ui.components.ItemActions
import com.esuiss.ui.components.ItemContent
import com.esuiss.ui.components.ItemDescription
import com.esuiss.ui.components.ItemGroup
import com.esuiss.ui.components.ItemGroupVariant
import com.esuiss.ui.components.ItemMedia
import com.esuiss.ui.components.ItemSeparator
import com.esuiss.ui.components.ItemSize
import com.esuiss.ui.components.ItemTitle
import com.esuiss.ui.components.Screen
import com.esuiss.ui.components.Switch
import com.esuiss.ui.components.rememberHeaderState
import com.esuiss.ui.theme.Colors
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.Typography

@Immutable
private data class DeviceToggles(
    val airplane: Boolean = false,
    val wifi: Boolean = true,
    val bluetooth: Boolean = true,
    val focus: Boolean = false,
)

private enum class ToggleKey { Airplane, Focus }

private class DeviceRow(
    val label: String,
    val icon: ImageVector,
    val tint: (Colors) -> Color,
    val toggle: ToggleKey? = null,
    val detail: ((DeviceToggles) -> String)? = null,
)

private val DeviceGroups = listOf(
    listOf(
        DeviceRow("Airplane Mode", PhosphorIcons.Bold.Airplane, { it.orange }, toggle = ToggleKey.Airplane),
        DeviceRow("Wi-Fi", PhosphorIcons.Bold.WifiHigh, { it.blue }, detail = { if (it.wifi) "Home" else "Off" }),
        DeviceRow("Bluetooth", PhosphorIcons.Bold.Bluetooth, { it.blue }, detail = { if (it.bluetooth) "On" else "Off" }),
        DeviceRow("Cellular", PhosphorIcons.Bold.CellSignalFull, { it.green }, detail = { if (it.airplane) "Off" else "" }),
    ),
    listOf(
        DeviceRow("Notifications", PhosphorIcons.Bold.Bell, { it.red }),
        DeviceRow("Sounds & Haptics", PhosphorIcons.Bold.SpeakerHigh, { it.pink }),
        DeviceRow("Focus", PhosphorIcons.Bold.Moon, { it.indigo }, toggle = ToggleKey.Focus),
        DeviceRow("Screen Time", PhosphorIcons.Bold.Hourglass, { it.indigo }),
    ),
    listOf(
        DeviceRow("General", PhosphorIcons.Bold.Gear, { it.gray }),
        DeviceRow("Display & Brightness", PhosphorIcons.Bold.Sun, { it.blue }),
    ),
)

@Composable
fun SettingsDevice(
    modifier: Modifier = Modifier,
    onAccountPress: () -> Unit = {},
    onRowPress: (label: String) -> Unit = {},
) {
    val colors = EsuissTheme.colors
    var query by rememberSaveable { mutableStateOf("") }
    var toggles by remember { mutableStateOf(DeviceToggles()) }
    val header = rememberHeaderState()

    fun setToggle(key: ToggleKey, value: Boolean) {
        toggles = when (key) {
            ToggleKey.Airplane -> if (value) toggles.copy(airplane = true, wifi = false, bluetooth = false) else toggles.copy(airplane = false)
            ToggleKey.Focus -> toggles.copy(focus = value)
        }
    }

    fun isOn(key: ToggleKey) = when (key) {
        ToggleKey.Airplane -> toggles.airplane
        ToggleKey.Focus -> toggles.focus
    }

    val visible = DeviceGroups
        .map { rows -> rows.filter { query.isBlank() || it.label.contains(query.trim(), ignoreCase = true) } }
        .filter { it.isNotEmpty() }

    Screen(modifier) {
        Column(
            Modifier
                .fillMaxSize()
                .nestedScroll(header.nestedScrollConnection),
        ) {
            Header(state = header) {
                HeaderTitle("Settings")
                HeaderLargeTitle("Settings")
            }
            Column(
                modifier = Modifier
                    .weight(1f)
                    .verticalScroll(rememberScrollState())
                    .padding(start = 16.dp, end = 16.dp, top = 4.dp, bottom = 24.dp),
                verticalArrangement = Arrangement.spacedBy(18.dp),
            ) {
                InputGroup {
                    InputGroupAddon {
                        Icon(PhosphorIcons.Bold.MagnifyingGlass, contentDescription = null)
                    }
                    InputGroupInput(value = query, onValueChange = { query = it }, placeholder = "Search")
                }
                if (query.isBlank()) {
                    ItemGroup(variant = ItemGroupVariant.Inset) {
                        Item(size = ItemSize.Sm, onClick = onAccountPress) {
                            Avatar(
                                modifier = Modifier.size(58.dp),
                                size = AvatarSize.Xl,
                                fallback = {
                                    Box(
                                        Modifier
                                            .fillMaxSize()
                                            .background(colors.indigo, CircleShape),
                                        contentAlignment = Alignment.Center,
                                    ) {
                                        BasicText("JR", style = Typography.xl.copy(color = colors.onAccent, fontWeight = FontWeight.SemiBold))
                                    }
                                },
                            )
                            ItemContent {
                                BasicText("Jamie Rivera", style = Typography.xl.copy(color = colors.label, fontWeight = FontWeight.SemiBold))
                                ItemDescription("suiss Account, Cloud and more")
                            }
                            ItemActions {
                                Icon(PhosphorIcons.Bold.CaretRight, contentDescription = null, size = 14.dp, tint = colors.labelTertiary)
                            }
                        }
                    }
                }
                visible.forEach { rows ->
                    ItemGroup(variant = ItemGroupVariant.Inset) {
                        rows.forEachIndexed { index, row ->
                            if (index > 0) ItemSeparator(Modifier.padding(start = 41.dp))
                            val toggle = row.toggle
                            Item(
                                size = ItemSize.Sm,
                                onClick = if (toggle == null) ({ onRowPress(row.label) }) else null,
                            ) {
                                ItemMedia(
                                    Modifier
                                        .size(29.dp)
                                        .background(row.tint(colors), RoundedCornerShape(7.dp)),
                                ) {
                                    Icon(row.icon, contentDescription = null, size = 17.dp, tint = colors.onAccent)
                                }
                                ItemContent {
                                    ItemTitle {
                                        BasicText(row.label, style = Typography.base.copy(color = colors.label), maxLines = 1)
                                    }
                                }
                                ItemActions {
                                    if (toggle != null) {
                                        Switch(checked = isOn(toggle), onCheckedChange = { setToggle(toggle, it) })
                                    } else {
                                        val detail = row.detail?.invoke(toggles).orEmpty()
                                        if (detail.isNotEmpty()) {
                                            BasicText(detail, style = Typography.base.copy(color = colors.labelSecondary))
                                        }
                                        Icon(PhosphorIcons.Bold.CaretRight, contentDescription = null, size = 14.dp, tint = colors.labelTertiary)
                                    }
                                }
                            }
                        }
                    }
                }
                if (visible.isEmpty()) {
                    BasicText(
                        "No Results",
                        modifier = Modifier
                            .fillMaxWidth()
                            .padding(30.dp),
                        style = Typography.base.copy(color = colors.labelSecondary, textAlign = TextAlign.Center),
                    )
                }
            }
        }
    }
}
```

```kt title="kotlin/components/Avatar.kt"
package com.esuiss.ui.components

import androidx.compose.foundation.Image
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.offset
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.foundation.text.BasicText
import androidx.compose.runtime.Composable
import androidx.compose.runtime.CompositionLocalProvider
import androidx.compose.runtime.staticCompositionLocalOf
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.graphics.painter.Painter
import androidx.compose.ui.layout.ContentScale
import androidx.compose.ui.layout.Layout
import androidx.compose.ui.text.TextStyle
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.unit.Dp
import androidx.compose.ui.unit.constrainHeight
import androidx.compose.ui.unit.constrainWidth
import androidx.compose.ui.unit.dp
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.Typography

enum class AvatarSize(
    val size: Dp,
    internal val iconSize: Dp,
    internal val badgeSize: Dp,
    internal val badgeIconSize: Dp,
    internal val countIconSize: Dp,
) {
    Sm(24.dp, 14.dp, 12.dp, 0.dp, 12.dp),
    Default(32.dp, 20.dp, 16.dp, 8.dp, 16.dp),
    Lg(40.dp, 24.dp, 18.dp, 10.dp, 20.dp),
    Xl(64.dp, 40.dp, 22.dp, 12.dp, 28.dp),
    ;

    internal val textStyle: TextStyle
        get() = when (this) {
            Sm -> Typography.xs3
            Default -> Typography.xs
            Lg -> Typography.md
            Xl -> Typography.xl2
        }
}

private val LocalAvatarSize = staticCompositionLocalOf { AvatarSize.Default }

private val LocalAvatarGrouped = staticCompositionLocalOf { false }

@Composable
fun Avatar(
    modifier: Modifier = Modifier,
    size: AvatarSize = AvatarSize.Default,
    image: Painter? = null,
    contentDescription: String? = null,
    badge: (@Composable () -> Unit)? = null,
    fallback: (@Composable () -> Unit)? = null,
) {
    val colors = EsuissTheme.colors
    val grouped = LocalAvatarGrouped.current
    CompositionLocalProvider(LocalAvatarSize provides size, LocalAvatarGrouped provides false) {
        Box(modifier.size(size.size)) {
            Box(
                Modifier
                    .fillMaxSize()
                    .then(
                        if (grouped) {
                            Modifier.background(colors.surface, CircleShape).padding(2.dp)
                        } else {
                            Modifier
                        },
                    )
                    .clip(CircleShape),
                contentAlignment = Alignment.Center,
            ) {
                fallback?.invoke()
                if (image != null) {
                    Image(
                        painter = image,
                        contentDescription = contentDescription,
                        modifier = Modifier.fillMaxSize(),
                        contentScale = ContentScale.Crop,
                    )
                }
            }
            if (badge != null) {
                Box(Modifier.align(Alignment.BottomEnd).offset(2.dp, 2.dp)) {
                    badge()
                }
            }
        }
    }
}

@Composable
fun AvatarFallback(
    modifier: Modifier = Modifier,
    content: @Composable () -> Unit,
) {
    val colors = EsuissTheme.colors
    val size = LocalAvatarSize.current
    val background = if (colors.isDark) {
        colors.labelSecondary.copy(alpha = colors.labelSecondary.alpha * 0.6f)
    } else {
        colors.labelSecondary
    }
    Box(
        modifier = modifier.fillMaxSize().background(background, CircleShape),
        contentAlignment = Alignment.Center,
    ) {
        CompositionLocalProvider(
            LocalContentStyle provides size.textStyle.copy(color = colors.onAccent, fontWeight = FontWeight.SemiBold),
            LocalContentColor provides colors.onAccent,
            LocalIconSize provides size.iconSize,
        ) {
            content()
        }
    }
}

@Composable
fun AvatarFallback(
    text: String,
    modifier: Modifier = Modifier,
) {
    AvatarFallback(modifier) {
        BasicText(text.uppercase(), style = LocalContentStyle.current, maxLines = 1)
    }
}

@Composable
fun AvatarBadge(
    modifier: Modifier = Modifier,
    content: @Composable () -> Unit = {},
) {
    val colors = EsuissTheme.colors
    val size = LocalAvatarSize.current
    Box(
        modifier = modifier
            .size(size.badgeSize)
            .background(colors.surface, CircleShape)
            .padding(2.dp)
            .background(colors.accent, CircleShape),
        contentAlignment = Alignment.Center,
    ) {
        if (size != AvatarSize.Sm) {
            CompositionLocalProvider(
                LocalContentStyle provides Typography.xs3.copy(color = colors.onAccent),
                LocalContentColor provides colors.onAccent,
                LocalIconSize provides size.badgeIconSize,
            ) {
                content()
            }
        }
    }
}

@Composable
fun AvatarGroup(
    modifier: Modifier = Modifier,
    content: @Composable () -> Unit,
) {
    Layout(
        content = { CompositionLocalProvider(LocalAvatarGrouped provides true, content = content) },
        modifier = modifier,
    ) { measurables, constraints ->
        val loose = constraints.copy(minWidth = 0, minHeight = 0)
        val placeables = measurables.map { it.measure(loose) }
        val large = AvatarSize.Xl.size.roundToPx()
        val offsets = IntArray(placeables.size)
        var x = 0
        placeables.forEachIndexed { index, placeable ->
            if (index > 0) x -= if (placeable.height >= large) 16.dp.roundToPx() else 8.dp.roundToPx()
            offsets[index] = x
            x += placeable.width
        }
        val height = placeables.maxOfOrNull { it.height } ?: 0
        layout(constraints.constrainWidth(x.coerceAtLeast(0)), constraints.constrainHeight(height)) {
            placeables.forEachIndexed { index, placeable ->
                placeable.placeRelative(offsets[index], (height - placeable.height) / 2)
            }
        }
    }
}

@Composable
fun AvatarGroupCount(
    modifier: Modifier = Modifier,
    size: AvatarSize = AvatarSize.Default,
    content: @Composable () -> Unit,
) {
    val colors = EsuissTheme.colors
    Box(
        modifier = modifier
            .size(size.size)
            .background(colors.surface, CircleShape)
            .padding(2.dp)
            .background(colors.surfaceSecondary, CircleShape),
        contentAlignment = Alignment.Center,
    ) {
        CompositionLocalProvider(
            LocalContentStyle provides size.textStyle.copy(color = colors.label, fontWeight = FontWeight.SemiBold),
            LocalContentColor provides colors.label,
            LocalIconSize provides size.countIconSize,
        ) {
            content()
        }
    }
}

@Composable
fun AvatarGroupCount(
    text: String,
    modifier: Modifier = Modifier,
    size: AvatarSize = AvatarSize.Default,
) {
    AvatarGroupCount(modifier, size) {
        BasicText(text, style = LocalContentStyle.current, maxLines = 1)
    }
}
```

```kt title="kotlin/components/Button.kt"
package com.esuiss.ui.components

import androidx.compose.foundation.background
import androidx.compose.foundation.border
import androidx.compose.foundation.clickable
import androidx.compose.foundation.interaction.MutableInteractionSource
import androidx.compose.foundation.interaction.collectIsPressedAsState
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.RowScope
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.foundation.text.BasicText
import androidx.compose.runtime.Composable
import androidx.compose.runtime.CompositionLocalProvider
import androidx.compose.runtime.getValue
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.semantics.Role
import androidx.compose.ui.text.TextStyle
import androidx.compose.ui.text.style.TextDecoration
import androidx.compose.ui.unit.Dp
import androidx.compose.ui.unit.dp
import com.esuiss.ui.theme.Colors
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.Radius
import com.esuiss.ui.theme.Typography

enum class ButtonVariant { Default, Outline, Secondary, Tinted, Ghost, Plain, Destructive, Link }

enum class ButtonSize(
    val height: Dp,
    val horizontalPadding: Dp,
    val spacing: Dp,
    val iconSize: Dp,
    val blockRadius: Dp,
    val isIcon: Boolean,
) {
    Default(36.dp, 16.dp, 6.dp, 16.dp, Radius.md, false),
    Xs(24.dp, 11.dp, 4.dp, 12.dp, Radius.sm, false),
    Sm(32.dp, 12.dp, 4.dp, 16.dp, Radius.md, false),
    Lg(44.dp, 22.dp, 6.dp, 16.dp, Radius.lg, false),
    Xl(56.dp, 31.dp, 8.dp, 16.dp, Radius.xl, false),
    Icon(36.dp, 0.dp, 6.dp, 16.dp, Radius.md, true),
    IconXs(24.dp, 0.dp, 4.dp, 12.dp, Radius.sm, true),
    IconSm(32.dp, 0.dp, 4.dp, 16.dp, Radius.md, true),
    IconLg(44.dp, 0.dp, 6.dp, 16.dp, Radius.lg, true),
    IconXl(56.dp, 0.dp, 8.dp, 16.dp, Radius.xl, true),
    ;

    val textStyle: TextStyle
        get() = when (this) {
            Xs, IconXs -> Typography.xs2
            Lg, Xl -> Typography.base
            else -> Typography.sm
        }
}

@Composable
fun Button(
    onClick: () -> Unit,
    modifier: Modifier = Modifier,
    variant: ButtonVariant = ButtonVariant.Default,
    size: ButtonSize = ButtonSize.Default,
    block: Boolean = false,
    enabled: Boolean = true,
    content: @Composable RowScope.() -> Unit,
) {
    val colors = EsuissTheme.colors
    val interaction = remember { MutableInteractionSource() }
    val pressed by interaction.collectIsPressedAsState()
    val foreground = buttonForeground(variant, colors, enabled)
    val group = LocalButtonGroup.current?.takeIf { variant != ButtonVariant.Ghost && variant != ButtonVariant.Plain }
    RegisterButtonGroupOutline(group, variant == ButtonVariant.Outline)
    val shape = group.itemShape(if (block) RoundedCornerShape(size.blockRadius) else CircleShape)
    val sizing = when {
        block -> Modifier.fillMaxWidth().height(size.height)
        size.isIcon -> Modifier.size(size.height)
        else -> Modifier.height(size.height)
    }

    Row(
        modifier = modifier
            .then(sizing)
            .clip(shape)
            .background(buttonBackground(variant, colors, pressed && enabled, enabled), shape)
            .then(
                when {
                    variant != ButtonVariant.Outline -> Modifier
                    group != null -> Modifier.buttonGroupEdge(group, colors.separator)
                    else -> Modifier.border(1.dp, colors.separator, shape)
                },
            )
            .clickable(
                interactionSource = interaction,
                indication = null,
                enabled = enabled,
                role = Role.Button,
                onClick = onClick,
            )
            .padding(horizontal = size.horizontalPadding),
        horizontalArrangement = Arrangement.spacedBy(size.spacing, Alignment.CenterHorizontally),
        verticalAlignment = Alignment.CenterVertically,
    ) {
        CompositionLocalProvider(
            LocalButtonGroup provides null,
            LocalContentStyle provides size.textStyle.copy(
                color = foreground,
                textDecoration = if (variant == ButtonVariant.Link && pressed && enabled) {
                    TextDecoration.Underline
                } else {
                    null
                },
            ),
            LocalContentColor provides foreground,
            LocalIconSize provides size.iconSize,
        ) {
            content()
        }
    }
}

@Composable
fun Button(
    text: String,
    onClick: () -> Unit,
    modifier: Modifier = Modifier,
    variant: ButtonVariant = ButtonVariant.Default,
    size: ButtonSize = ButtonSize.Default,
    block: Boolean = false,
    enabled: Boolean = true,
) {
    Button(onClick, modifier, variant, size, block, enabled) {
        BasicText(text, style = LocalContentStyle.current, maxLines = 1)
    }
}

private fun buttonForeground(variant: ButtonVariant, colors: Colors, enabled: Boolean): Color =
    when (variant) {
        ButtonVariant.Default -> colors.onAccent
        ButtonVariant.Outline, ButtonVariant.Secondary, ButtonVariant.Ghost ->
            if (enabled) colors.label else colors.labelQuaternary
        ButtonVariant.Tinted, ButtonVariant.Plain ->
            if (enabled) colors.link else colors.link.copy(alpha = 0.4f)
        ButtonVariant.Destructive ->
            if (enabled) colors.danger else colors.danger.copy(alpha = 0.4f)
        ButtonVariant.Link -> if (enabled) colors.link else colors.labelQuaternary
    }

private fun buttonBackground(variant: ButtonVariant, colors: Colors, pressed: Boolean, enabled: Boolean): Color =
    when (variant) {
        ButtonVariant.Default -> when {
            !enabled -> colors.accentDisabled
            pressed -> colors.accentPressed
            else -> colors.accent
        }
        ButtonVariant.Outline -> when {
            pressed -> colors.itemPressed
            colors.isDark -> Color.Transparent
            else -> colors.surface
        }
        ButtonVariant.Secondary -> when {
            !enabled -> colors.controlDisabled
            pressed -> colors.controlPressed
            else -> colors.control
        }
        ButtonVariant.Tinted -> if (pressed) colors.accentSurfacePressed else colors.accentSurface
        ButtonVariant.Ghost -> if (pressed) colors.itemPressed else Color.Transparent
        ButtonVariant.Plain -> if (pressed) colors.itemPressed else Color.Transparent
        ButtonVariant.Destructive -> if (pressed) colors.dangerSurfacePressed else colors.dangerSurface
        ButtonVariant.Link -> Color.Transparent
    }
```

```kt title="kotlin/components/ButtonGroup.kt"
package com.esuiss.ui.components

import androidx.compose.foundation.background
import androidx.compose.foundation.gestures.Orientation
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.RowScope
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.foundation.shape.CornerSize
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.runtime.Composable
import androidx.compose.runtime.CompositionLocalProvider
import androidx.compose.runtime.DisposableEffect
import androidx.compose.runtime.Immutable
import androidx.compose.runtime.Stable
import androidx.compose.runtime.compositionLocalOf
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableIntStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.draw.drawBehind
import androidx.compose.ui.draw.drawWithContent
import androidx.compose.ui.geometry.Offset
import androidx.compose.ui.geometry.Size
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.RectangleShape
import androidx.compose.ui.graphics.Shape
import androidx.compose.ui.graphics.drawOutline
import androidx.compose.ui.graphics.drawscope.Stroke
import androidx.compose.ui.graphics.drawscope.translate
import androidx.compose.ui.graphics.takeOrElse
import androidx.compose.ui.layout.Layout
import androidx.compose.ui.layout.Placeable
import androidx.compose.ui.layout.layout
import androidx.compose.ui.layout.layoutId
import androidx.compose.ui.layout.onPlaced
import androidx.compose.ui.platform.LocalLayoutDirection
import androidx.compose.ui.semantics.isTraversalGroup
import androidx.compose.ui.semantics.semantics
import androidx.compose.ui.unit.Constraints
import androidx.compose.ui.unit.LayoutDirection
import androidx.compose.ui.unit.constrainHeight
import androidx.compose.ui.unit.constrainWidth
import androidx.compose.ui.unit.dp
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.Radius
import com.esuiss.ui.theme.Typography

enum class ButtonGroupOrientation { Horizontal, Vertical }

@Stable
internal class ButtonGroupState(val orientation: ButtonGroupOrientation) {
    var nested by mutableIntStateOf(0)
    var outlined by mutableIntStateOf(0)
}

internal val LocalButtonGroup = compositionLocalOf<ButtonGroupState?> { null }

internal object ButtonGroupFill

private object ButtonGroupDivider

internal fun ButtonGroupState?.itemShape(default: Shape): Shape = if (this == null) default else RectangleShape

@Immutable
internal class ButtonGroupItem(val shape: Shape, val modifier: Modifier)

@Composable
internal fun rememberButtonGroupItem(group: ButtonGroupState?, default: Shape): ButtonGroupItem {
    var edges by remember { mutableIntStateOf(0) }
    val horizontal = group?.orientation != ButtonGroupOrientation.Vertical
    val rtl = LocalLayoutDirection.current == LayoutDirection.Rtl
    val shape = remember(edges, horizontal) {
        val round = if (horizontal) CornerSize(50) else CornerSize(Radius.xl2)
        val square = CornerSize(0)
        val start = if (edges and 1 != 0) round else square
        val end = if (edges and 2 != 0) round else square
        if (horizontal) {
            RoundedCornerShape(topStart = start, topEnd = end, bottomEnd = end, bottomStart = start)
        } else {
            RoundedCornerShape(topStart = start, topEnd = start, bottomEnd = end, bottomStart = end)
        }
    }
    if (group == null || group.nested > 0) return ButtonGroupItem(default, Modifier)
    return ButtonGroupItem(
        shape = shape,
        modifier = Modifier.onPlaced { coordinates ->
            val parent = coordinates.parentLayoutCoordinates ?: return@onPlaced
            val bounds = parent.localBoundingBoxOf(coordinates, clipBounds = false)
            val first: Boolean
            val last: Boolean
            if (horizontal) {
                val left = bounds.left <= 0.5f
                val right = bounds.right >= parent.size.width - 0.5f
                first = if (rtl) right else left
                last = if (rtl) left else right
            } else {
                first = bounds.top <= 0.5f
                last = bounds.bottom >= parent.size.height - 0.5f
            }
            edges = (if (first) 1 else 0) or (if (last) 2 else 0)
        },
    )
}

internal fun Modifier.buttonGroupEdge(group: ButtonGroupState?, color: Color): Modifier {
    if (group == null) return this
    return drawBehind {
        val stroke = 1.dp.toPx()
        if (group.orientation == ButtonGroupOrientation.Horizontal) {
            val x = if (layoutDirection == LayoutDirection.Rtl) 0f else size.width - stroke
            drawRect(color, Offset(x, 0f), Size(stroke, size.height))
        } else {
            drawRect(color, Offset(0f, size.height - stroke), Size(size.width, stroke))
        }
    }
}

@Composable
internal fun RegisterButtonGroupOutline(group: ButtonGroupState?, outlined: Boolean) {
    DisposableEffect(group, outlined) {
        if (group != null && outlined) group.outlined += 1
        onDispose {
            if (group != null && outlined) group.outlined -= 1
        }
    }
}

@Composable
fun ButtonGroup(
    modifier: Modifier = Modifier,
    orientation: ButtonGroupOrientation = ButtonGroupOrientation.Horizontal,
    content: @Composable () -> Unit,
) {
    val parent = LocalButtonGroup.current
    DisposableEffect(parent) {
        parent?.let { it.nested += 1 }
        onDispose { parent?.let { it.nested -= 1 } }
    }
    val state = remember(orientation) { ButtonGroupState(orientation) }
    val colors = EsuissTheme.colors
    val joined = state.nested == 0
    val horizontal = orientation == ButtonGroupOrientation.Horizontal
    val shape = if (horizontal) CircleShape else RoundedCornerShape(Radius.xl2)
    val outline = colors.separator
    Layout(
        content = {
            CompositionLocalProvider(LocalButtonGroup provides state, content = content)
        },
        modifier = modifier
            .semantics { isTraversalGroup = true }
            .then(
                if (joined) {
                    Modifier
                        .clip(shape)
                        .drawWithContent {
                            drawContent()
                            if (state.outlined > 0) {
                                val stroke = 1.dp.toPx()
                                val inset = stroke / 2
                                val path = shape.createOutline(
                                    Size(size.width - stroke, size.height - stroke),
                                    layoutDirection,
                                    this,
                                )
                                translate(inset, inset) {
                                    drawOutline(path, outline, style = Stroke(stroke))
                                }
                            }
                        }
                } else {
                    Modifier
                },
            ),
    ) { measurables, constraints ->
        val gap = if (joined) 0 else 8.dp.roundToPx()
        val items = measurables.filter { it.layoutId != ButtonGroupDivider }
        if (horizontal) {
            val height = if (constraints.hasFixedHeight) {
                constraints.maxHeight
            } else {
                constraints.constrainHeight(items.maxOfOrNull { it.maxIntrinsicHeight(Constraints.Infinity) } ?: 0)
            }
            val fills = measurables.count { it.layoutId == ButtonGroupFill }
            val placeables = arrayOfNulls<Placeable>(measurables.size)
            var used = 0
            measurables.forEachIndexed { index, measurable ->
                if (measurable.layoutId != ButtonGroupFill) {
                    val placeable = measurable.measure(Constraints(minHeight = height, maxHeight = height))
                    placeables[index] = placeable
                    used += placeable.width
                }
            }
            val gaps = gap * (items.size - 1).coerceAtLeast(0)
            val remaining = if (constraints.hasBoundedWidth) {
                (constraints.maxWidth - used - gaps).coerceAtLeast(0)
            } else {
                0
            }
            measurables.forEachIndexed { index, measurable ->
                if (measurable.layoutId == ButtonGroupFill) {
                    val placeable = if (constraints.hasBoundedWidth) {
                        val width = remaining / fills
                        measurable.measure(Constraints(width, width, height, height))
                    } else {
                        measurable.measure(Constraints(minHeight = height, maxHeight = height))
                    }
                    placeables[index] = placeable
                    used += placeable.width
                }
            }
            val width = constraints.constrainWidth(used + gaps)
            layout(width, height) {
                var x = 0
                measurables.forEachIndexed { index, measurable ->
                    val placeable = placeables[index] ?: return@forEachIndexed
                    val divider = measurable.layoutId == ButtonGroupDivider
                    placeable.placeRelative(x, 0, zIndex = if (divider) 1f else 0f)
                    if (!divider) x += placeable.width + gap
                }
            }
        } else {
            val width = if (constraints.hasFixedWidth) {
                constraints.maxWidth
            } else {
                constraints.constrainWidth(items.maxOfOrNull { it.maxIntrinsicWidth(Constraints.Infinity) } ?: 0)
            }
            val placeables = measurables.map { it.measure(Constraints(minWidth = width, maxWidth = width)) }
            val gaps = gap * (items.size - 1).coerceAtLeast(0)
            val height = constraints.constrainHeight(
                placeables.filterIndexed { index, _ -> measurables[index].layoutId != ButtonGroupDivider }.sumOf { it.height } + gaps,
            )
            layout(width, height) {
                var y = 0
                measurables.forEachIndexed { index, measurable ->
                    val divider = measurable.layoutId == ButtonGroupDivider
                    placeables[index].placeRelative(0, y, zIndex = if (divider) 1f else 0f)
                    if (!divider) y += placeables[index].height + gap
                }
            }
        }
    }
}

@Composable
fun ButtonGroupText(
    modifier: Modifier = Modifier,
    content: @Composable RowScope.() -> Unit,
) {
    val colors = EsuissTheme.colors
    val shape = LocalButtonGroup.current.itemShape(CircleShape)
    Row(
        modifier = modifier
            .clip(shape)
            .background(colors.control, shape)
            .padding(horizontal = 10.dp),
        horizontalArrangement = Arrangement.spacedBy(8.dp),
        verticalAlignment = Alignment.CenterVertically,
    ) {
        CompositionLocalProvider(
            LocalButtonGroup provides null,
            LocalContentStyle provides Typography.sm.copy(color = colors.label),
            LocalContentColor provides colors.label,
            LocalIconSize provides 16.dp,
        ) {
            content()
        }
    }
}

@Composable
fun ButtonGroupSeparator(
    modifier: Modifier = Modifier,
    orientation: Orientation = Orientation.Vertical,
    color: Color = Color.Unspecified,
) {
    val line = color.takeOrElse { EsuissTheme.colors.label.copy(alpha = 0.2f) }
    Box(
        modifier = modifier
            .layoutId(ButtonGroupDivider)
            .then(
                if (orientation == Orientation.Vertical) {
                    Modifier.layout { measurable, constraints ->
                        val placeable = measurable.measure(constraints.copy(minWidth = 0, maxWidth = 0))
                        layout(0, placeable.height) { placeable.place(0, 0) }
                    }
                } else {
                    Modifier.layout { measurable, constraints ->
                        val placeable = measurable.measure(constraints.copy(minHeight = 0, maxHeight = 0))
                        layout(placeable.width, 0) { placeable.place(0, 0) }
                    }
                },
            )
            .drawBehind {
                val stroke = 1.dp.toPx()
                val inset = 9.dp.toPx()
                if (orientation == Orientation.Vertical) {
                    val x = if (layoutDirection == LayoutDirection.Rtl) -stroke else 0f
                    drawRect(line, Offset(x, inset), Size(stroke, (size.height - inset * 2).coerceAtLeast(0f)))
                } else {
                    drawRect(line, Offset(inset, 0f), Size((size.width - inset * 2).coerceAtLeast(0f), stroke))
                }
            },
    )
}
```

```kt title="kotlin/components/Content.kt"
package com.esuiss.ui.components

import androidx.compose.runtime.compositionLocalOf
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.text.TextStyle
import androidx.compose.ui.unit.Dp
import androidx.compose.ui.unit.dp

val LocalContentStyle = compositionLocalOf { TextStyle.Default }

val LocalContentColor = compositionLocalOf { Color.Unspecified }

val LocalIconSize = compositionLocalOf { 20.dp }
```

```kt title="kotlin/components/Field.kt"
package com.esuiss.ui.components

import androidx.compose.foundation.background
import androidx.compose.foundation.gestures.Orientation
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.ColumnScope
import androidx.compose.foundation.layout.LayoutScopeMarker
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.RowScope
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.heightIn
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.foundation.text.BasicText
import androidx.compose.runtime.Composable
import androidx.compose.runtime.CompositionLocalProvider
import androidx.compose.runtime.Immutable
import androidx.compose.runtime.remember
import androidx.compose.runtime.staticCompositionLocalOf
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.layout.layout
import androidx.compose.ui.platform.LocalConfiguration
import androidx.compose.ui.semantics.LiveRegionMode
import androidx.compose.ui.semantics.heading
import androidx.compose.ui.semantics.liveRegion
import androidx.compose.ui.semantics.semantics
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.unit.dp
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.Radius
import com.esuiss.ui.theme.Typography

enum class FieldOrientation { Vertical, Horizontal, Responsive }

enum class FieldGroupVariant { Default, Inset }

enum class FieldLegendVariant { Legend, Label }

@Immutable
internal class FieldState(val enabled: Boolean, val invalid: Boolean)

internal val LocalFieldState = staticCompositionLocalOf { FieldState(enabled = true, invalid = false) }

private val LocalFieldSetInset = staticCompositionLocalOf { false }

private val LocalFieldGroupVariant = staticCompositionLocalOf<FieldGroupVariant?> { null }

private val LocalFieldInset = staticCompositionLocalOf { false }

@LayoutScopeMarker
@Immutable
interface FieldScope {
    fun Modifier.weight(weight: Float): Modifier
}

private class RowFieldScope(private val scope: RowScope) : FieldScope {
    override fun Modifier.weight(weight: Float): Modifier = with(scope) { this@weight.weight(weight, true) }
}

private object ColumnFieldScope : FieldScope {
    override fun Modifier.weight(weight: Float): Modifier = this
}

@Composable
fun FieldSet(
    modifier: Modifier = Modifier,
    variant: FieldGroupVariant = FieldGroupVariant.Default,
    enabled: Boolean = true,
    content: @Composable ColumnScope.() -> Unit,
) {
    val inset = variant == FieldGroupVariant.Inset
    CompositionLocalProvider(
        LocalFieldSetInset provides inset,
        LocalFieldState provides FieldState(enabled, LocalFieldState.current.invalid),
    ) {
        Column(
            modifier = modifier.fillMaxWidth(),
            verticalArrangement = Arrangement.spacedBy(if (inset) 8.dp else 24.dp),
            content = content,
        )
    }
}

@Composable
fun FieldLegend(
    text: String,
    modifier: Modifier = Modifier,
    variant: FieldLegendVariant = FieldLegendVariant.Legend,
) {
    val colors = EsuissTheme.colors
    val inset = LocalFieldSetInset.current
    val enabled = LocalFieldState.current.enabled
    val style = if (inset) {
        Typography.xs.copy(color = if (enabled) colors.labelSecondary else colors.labelQuaternary)
    } else {
        Typography.base.copy(color = if (enabled) colors.label else colors.labelQuaternary, fontWeight = FontWeight.SemiBold)
    }
    BasicText(
        text = if (inset) text.uppercase() else text,
        modifier = modifier
            .then(if (variant == FieldLegendVariant.Legend) Modifier.semantics { heading() } else Modifier)
            .padding(start = if (inset) 16.dp else 0.dp, bottom = if (inset) 0.dp else 12.dp),
        style = style,
    )
}

@Composable
fun FieldGroup(
    modifier: Modifier = Modifier,
    variant: FieldGroupVariant = FieldGroupVariant.Default,
    content: @Composable () -> Unit,
) {
    val colors = EsuissTheme.colors
    CompositionLocalProvider(
        LocalFieldSetInset provides false,
        LocalFieldGroupVariant provides variant,
    ) {
        if (variant == FieldGroupVariant.Inset) {
            FormDividedStack(
                orientation = Orientation.Vertical,
                dividerColor = colors.separator,
                modifier = modifier
                    .fillMaxWidth()
                    .clip(RoundedCornerShape(Radius.xl2))
                    .background(colors.surfaceSecondary),
                dividerInsetStart = 16.dp,
                content = content,
            )
        } else {
            Column(
                modifier = modifier.fillMaxWidth(),
                verticalArrangement = Arrangement.spacedBy(28.dp),
            ) {
                content()
            }
        }
    }
}

@Composable
fun Field(
    modifier: Modifier = Modifier,
    orientation: FieldOrientation = FieldOrientation.Vertical,
    enabled: Boolean = LocalFieldState.current.enabled,
    invalid: Boolean = false,
    content: @Composable FieldScope.() -> Unit,
) {
    val inset = LocalFieldGroupVariant.current == FieldGroupVariant.Inset
    val horizontal = when (orientation) {
        FieldOrientation.Vertical -> false
        FieldOrientation.Horizontal -> true
        FieldOrientation.Responsive -> LocalConfiguration.current.screenWidthDp >= 768
    }
    val sizing = modifier
        .fillMaxWidth()
        .then(if (inset) Modifier.heightIn(min = 44.dp).padding(horizontal = 16.dp, vertical = 6.dp) else Modifier)
    CompositionLocalProvider(
        LocalFieldGroupVariant provides null,
        LocalFieldInset provides inset,
        LocalFieldState provides FieldState(enabled, invalid),
    ) {
        if (horizontal) {
            Row(
                modifier = sizing,
                horizontalArrangement = Arrangement.spacedBy(12.dp),
                verticalAlignment = Alignment.CenterVertically,
            ) {
                val scope = remember(this) { RowFieldScope(this) }
                scope.content()
            }
        } else {
            Column(
                modifier = sizing,
                verticalArrangement = Arrangement.spacedBy(12.dp, Alignment.CenterVertically),
            ) {
                ColumnFieldScope.content()
            }
        }
    }
}

@Composable
fun FieldScope.FieldContent(
    modifier: Modifier = Modifier,
    content: @Composable ColumnScope.() -> Unit,
) {
    Column(
        modifier = modifier.weight(1f),
        verticalArrangement = Arrangement.spacedBy(4.dp),
        content = content,
    )
}

@Composable
fun FieldLabel(text: String, modifier: Modifier = Modifier) {
    val colors = EsuissTheme.colors
    val enabled = LocalFieldState.current.enabled
    BasicText(
        text = text,
        modifier = modifier,
        style = Typography.base.copy(
            color = if (enabled) colors.label else colors.labelQuaternary,
            fontWeight = if (LocalFieldInset.current) FontWeight.Normal else FontWeight.SemiBold,
        ),
    )
}

@Composable
fun FieldTitle(text: String, modifier: Modifier = Modifier) {
    val colors = EsuissTheme.colors
    val enabled = LocalFieldState.current.enabled
    BasicText(
        text = text,
        modifier = modifier,
        style = Typography.base.copy(
            color = if (enabled) colors.label else colors.labelQuaternary,
            fontWeight = FontWeight.SemiBold,
        ),
    )
}

@Composable
fun FieldDescription(text: String, modifier: Modifier = Modifier) {
    val colors = EsuissTheme.colors
    val inset = LocalFieldSetInset.current
    BasicText(
        text = text,
        modifier = modifier.padding(start = if (inset) 16.dp else 0.dp),
        style = (if (inset) Typography.xs else Typography.sm).copy(color = colors.labelSecondary),
    )
}

@Composable
fun FieldSeparator(
    modifier: Modifier = Modifier,
    text: String? = null,
) {
    val colors = EsuissTheme.colors
    Box(
        modifier = modifier
            .fillMaxWidth()
            .layout { measurable, constraints ->
                val placeable = measurable.measure(constraints)
                val overlap = 8.dp.roundToPx()
                val height = (placeable.height - overlap * 2).coerceAtLeast(0)
                layout(placeable.width, height) { placeable.place(0, -overlap) }
            }
            .heightIn(min = 20.dp),
        contentAlignment = Alignment.Center,
    ) {
        Separator()
        if (text != null) {
            BasicText(
                text = text,
                modifier = Modifier.background(colors.surface).padding(horizontal = 8.dp),
                style = Typography.sm.copy(color = colors.labelSecondary),
            )
        }
    }
}

@Composable
fun FieldError(text: String?, modifier: Modifier = Modifier) {
    if (text.isNullOrEmpty()) return
    BasicText(
        text = text,
        modifier = modifier.semantics { liveRegion = LiveRegionMode.Polite },
        style = Typography.sm.copy(color = EsuissTheme.colors.danger),
    )
}

@Composable
fun FieldError(errors: List<String?>, modifier: Modifier = Modifier) {
    val messages = errors.filterNotNull().filter { it.isNotEmpty() }.distinct()
    val text = when (messages.size) {
        0 -> null
        1 -> messages[0]
        else -> messages.joinToString("\n") { "• $it" }
    }
    FieldError(text, modifier)
}
```

```kt title="kotlin/components/FormSupport.kt"
package com.esuiss.ui.components

import android.provider.Settings
import androidx.compose.animation.core.CubicBezierEasing
import androidx.compose.foundation.background
import androidx.compose.foundation.border
import androidx.compose.foundation.gestures.Orientation
import androidx.compose.foundation.text.selection.TextSelectionColors
import androidx.compose.runtime.Composable
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.draw.drawWithContent
import androidx.compose.ui.geometry.Offset
import androidx.compose.ui.geometry.Size
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.Shape
import androidx.compose.ui.layout.Layout
import androidx.compose.ui.layout.layout
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.unit.Constraints
import androidx.compose.ui.unit.Dp
import androidx.compose.ui.unit.LayoutDirection
import androidx.compose.ui.unit.constrainHeight
import androidx.compose.ui.unit.constrainWidth
import androidx.compose.ui.unit.dp
import com.esuiss.ui.theme.Colors
import com.esuiss.ui.theme.Shadow

internal val FormShadowXs = Shadow(0.dp, 1.dp, 2.dp, Color.Black.copy(alpha = 0.05f))

internal val FormShadowSm = Shadow(0.dp, 1.dp, 3.dp, Color.Black.copy(alpha = 0.1f))

internal val FormEasing = CubicBezierEasing(0.32f, 0.72f, 0f, 1f)

internal fun Modifier.formTouchTarget(): Modifier = layout { measurable, constraints ->
    val minimum = 48.dp.roundToPx()
    val placeable = measurable.measure(constraints)
    val width = constraints.constrainWidth(maxOf(placeable.width, minimum))
    val height = constraints.constrainHeight(maxOf(placeable.height, minimum))
    layout(width, height) {
        placeable.place((width - placeable.width) / 2, (height - placeable.height) / 2)
    }
}

@Composable
internal fun formReducedMotion(): Boolean {
    val context = LocalContext.current
    return remember(context) {
        Settings.Global.getFloat(context.contentResolver, Settings.Global.ANIMATOR_DURATION_SCALE, 1f) == 0f
    }
}

internal fun formSelectionColors(colors: Colors) = TextSelectionColors(
    handleColor = colors.accent,
    backgroundColor = colors.accent.copy(alpha = 0.3f),
)

internal fun Modifier.formInputSurface(
    colors: Colors,
    shape: Shape,
    focused: Boolean,
    invalid: Boolean,
    enabled: Boolean,
): Modifier {
    val background = when {
        !enabled -> colors.controlDisabled
        invalid -> colors.danger.copy(alpha = if (colors.isDark) 0.1f else 0.05f)
        else -> colors.control
    }
    val border = when {
        invalid -> colors.danger
        focused -> colors.focus
        else -> Color.Transparent
    }
    return clip(shape).background(background, shape).border(1.dp, border, shape)
}

@Composable
internal fun FormDividedStack(
    orientation: Orientation,
    dividerColor: Color,
    modifier: Modifier = Modifier,
    dividerInsetStart: Dp = 0.dp,
    content: @Composable () -> Unit,
) {
    val boundaries = remember { mutableStateOf(IntArray(0)) }
    val vertical = orientation == Orientation.Vertical
    Layout(
        content = content,
        modifier = modifier.drawWithContent {
            drawContent()
            val stroke = 1.dp.toPx()
            val inset = dividerInsetStart.toPx()
            boundaries.value.forEach { position ->
                if (vertical) {
                    val start = if (layoutDirection == LayoutDirection.Rtl) 0f else inset
                    drawRect(dividerColor, Offset(start, position.toFloat()), Size(size.width - inset, stroke))
                } else {
                    val x = if (layoutDirection == LayoutDirection.Rtl) size.width - position - stroke else position.toFloat()
                    drawRect(dividerColor, Offset(x, 0f), Size(stroke, size.height))
                }
            }
        },
    ) { measurables, constraints ->
        if (vertical) {
            val width = if (constraints.hasFixedWidth) {
                constraints.maxWidth
            } else {
                constraints.constrainWidth(measurables.maxOfOrNull { it.maxIntrinsicWidth(Constraints.Infinity) } ?: 0)
            }
            val placeables = measurables.map {
                it.measure(Constraints(minWidth = width, maxWidth = width))
            }
            val offsets = IntArray(placeables.size)
            var y = 0
            placeables.forEachIndexed { index, placeable ->
                offsets[index] = y
                y += placeable.height
            }
            val next = offsets.drop(1).toIntArray()
            if (!next.contentEquals(boundaries.value)) boundaries.value = next
            layout(width, constraints.constrainHeight(y)) {
                placeables.forEachIndexed { index, placeable -> placeable.placeRelative(0, offsets[index]) }
            }
        } else {
            val height = if (constraints.hasFixedHeight) {
                constraints.maxHeight
            } else {
                constraints.constrainHeight(measurables.maxOfOrNull { it.maxIntrinsicHeight(Constraints.Infinity) } ?: 0)
            }
            val placeables = measurables.map {
                it.measure(Constraints(minHeight = height, maxHeight = height))
            }
            val offsets = IntArray(placeables.size)
            var x = 0
            placeables.forEachIndexed { index, placeable ->
                offsets[index] = x
                x += placeable.width
            }
            val next = offsets.drop(1).toIntArray()
            if (!next.contentEquals(boundaries.value)) boundaries.value = next
            layout(constraints.constrainWidth(x), height) {
                placeables.forEachIndexed { index, placeable -> placeable.placeRelative(offsets[index], 0) }
            }
        }
    }
}
```

```kt title="kotlin/components/Haptics.kt"
package com.esuiss.ui.components

import androidx.compose.runtime.Composable
import androidx.compose.runtime.CompositionLocalProvider
import androidx.compose.runtime.remember
import androidx.compose.runtime.staticCompositionLocalOf
import androidx.compose.ui.hapticfeedback.HapticFeedback
import androidx.compose.ui.hapticfeedback.HapticFeedbackType
import androidx.compose.ui.platform.LocalHapticFeedback

val LocalHapticsEnabled = staticCompositionLocalOf { true }

@Composable
fun ProvideHaptics(enabled: Boolean, content: @Composable () -> Unit) {
    CompositionLocalProvider(LocalHapticsEnabled provides enabled, content = content)
}

internal class Haptics(private val feedback: HapticFeedback, private val enabled: Boolean) {
    fun perform(type: HapticFeedbackType) {
        if (enabled) feedback.performHapticFeedback(type)
    }

    fun toggle(on: Boolean) = perform(if (on) HapticFeedbackType.ToggleOn else HapticFeedbackType.ToggleOff)

    fun selection() = perform(HapticFeedbackType.SegmentTick)
}

@Composable
internal fun rememberHaptics(): Haptics {
    val feedback = LocalHapticFeedback.current
    val enabled = LocalHapticsEnabled.current
    return remember(feedback, enabled) { Haptics(feedback, enabled) }
}
```

```kt title="kotlin/components/Header.kt"
package com.esuiss.ui.components

import androidx.compose.animation.core.animate
import androidx.compose.animation.core.animateFloatAsState
import androidx.compose.animation.core.tween
import androidx.compose.foundation.clickable
import androidx.compose.foundation.interaction.MutableInteractionSource
import androidx.compose.foundation.interaction.collectIsPressedAsState
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.RowScope
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.text.BasicText
import androidx.compose.runtime.Composable
import androidx.compose.runtime.CompositionLocalProvider
import androidx.compose.runtime.Stable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableFloatStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.runtime.staticCompositionLocalOf
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clipToBounds
import androidx.compose.ui.draw.drawWithContent
import androidx.compose.ui.geometry.Offset
import androidx.compose.ui.geometry.Size
import androidx.compose.ui.graphics.graphicsLayer
import androidx.compose.ui.input.nestedscroll.NestedScrollConnection
import androidx.compose.ui.input.nestedscroll.NestedScrollSource
import androidx.compose.ui.layout.Layout
import androidx.compose.ui.layout.layoutId
import androidx.compose.ui.semantics.Role
import androidx.compose.ui.semantics.heading
import androidx.compose.ui.semantics.semantics
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.text.style.TextAlign
import androidx.compose.ui.text.style.TextOverflow
import androidx.compose.ui.unit.Constraints
import androidx.compose.ui.unit.Velocity
import androidx.compose.ui.unit.dp
import com.adamglin.PhosphorIcons
import com.adamglin.phosphoricons.Regular
import com.adamglin.phosphoricons.regular.CaretLeft
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.Typography

private val HeaderBarHeight = 44.dp

private enum class HeaderSlot { Back, Start, End, Title, LargeTitle }

enum class HeaderActionsSide { Leading, Trailing }

@Stable
class HeaderState {
    internal var range by mutableFloatStateOf(0f)
    internal var offset by mutableFloatStateOf(0f)

    val collapsedFraction: Float
        get() = if (range <= 0f) 1f else (offset / range).coerceIn(0f, 1f)

    val nestedScrollConnection: NestedScrollConnection = object : NestedScrollConnection {
        override fun onPreScroll(available: Offset, source: NestedScrollSource): Offset {
            if (available.y >= 0f || range <= 0f) return Offset.Zero
            val next = (offset - available.y).coerceAtMost(range)
            val used = next - offset
            offset = next
            return Offset(0f, -used)
        }

        override fun onPostScroll(consumed: Offset, available: Offset, source: NestedScrollSource): Offset {
            if (available.y <= 0f || range <= 0f) return Offset.Zero
            val next = (offset - available.y).coerceAtLeast(0f)
            val used = offset - next
            offset = next
            return Offset(0f, used)
        }

        override suspend fun onPostFling(consumed: Velocity, available: Velocity): Velocity {
            settle()
            return Velocity.Zero
        }
    }

    internal suspend fun settle() {
        if (range <= 0f || offset <= 0f || offset >= range) return
        val target = if (offset < range / 2f) 0f else range
        animate(offset, target, animationSpec = tween(250)) { value, _ -> offset = value }
    }
}

@Composable
fun rememberHeaderState(): HeaderState = remember { HeaderState() }

private val LocalHeaderState = staticCompositionLocalOf<HeaderState?> { null }

@Composable
fun Header(
    modifier: Modifier = Modifier,
    state: HeaderState = rememberHeaderState(),
    content: @Composable () -> Unit,
) {
    val colors = EsuissTheme.colors
    val collapsed = state.range > 0f && state.offset >= state.range
    val separator by animateFloatAsState(if (state.range <= 0f || collapsed) 1f else 0f, tween(150), label = "separator")
    CompositionLocalProvider(LocalHeaderState provides state) {
        Layout(
            content = content,
            modifier = modifier
                .clipToBounds()
                .drawWithContent {
                    drawContent()
                    val stroke = 1.dp.toPx()
                    drawRect(colors.separator.copy(alpha = colors.separator.alpha * separator), Offset(0f, size.height - stroke), Size(size.width, stroke))
                },
        ) { measurables, constraints ->
            val width = constraints.maxWidth
            val bar = HeaderBarHeight.roundToPx()
            val inset = 8.dp.roundToPx()
            val loose = Constraints(maxWidth = width, maxHeight = bar)
            val back = measurables.firstOrNull { it.layoutId == HeaderSlot.Back }?.measure(loose)
            val start = measurables.firstOrNull { it.layoutId == HeaderSlot.Start }?.measure(loose)
            val end = measurables.firstOrNull { it.layoutId == HeaderSlot.End }?.measure(loose)
            val leading = (back?.width ?: 0) + (start?.width ?: 0)
            val side = maxOf(leading, end?.width ?: 0) + inset
            val titleWidth = (width - side * 2).coerceAtLeast(0)
            val title = measurables.firstOrNull { it.layoutId == HeaderSlot.Title }
                ?.measure(Constraints(maxWidth = titleWidth, maxHeight = bar))
            val large = measurables.firstOrNull { it.layoutId == HeaderSlot.LargeTitle }
                ?.measure(Constraints(minWidth = width, maxWidth = width))
            val range = (large?.height ?: 0).toFloat()
            if (state.range != range) state.range = range
            val offset = state.offset.coerceIn(0f, range).toInt()
            val height = bar + (large?.height ?: 0) - offset
            layout(width, height) {
                var x = inset
                back?.let {
                    it.placeRelative(x, (bar - it.height) / 2)
                    x += it.width
                }
                start?.placeRelative(x, (bar - (start.height)) / 2)
                end?.let { it.placeRelative(width - inset - it.width, (bar - it.height) / 2) }
                title?.placeRelative((width - title.width) / 2, (bar - title.height) / 2)
                large?.placeRelative(0, bar - offset)
            }
        }
    }
}

@Composable
fun HeaderTitle(
    text: String,
    modifier: Modifier = Modifier,
    subtitle: String? = null,
) {
    val colors = EsuissTheme.colors
    val state = LocalHeaderState.current
    Column(
        modifier = modifier
            .layoutId(HeaderSlot.Title)
            .graphicsLayer {
                val fraction = state?.collapsedFraction ?: 1f
                alpha = if (state == null || state.range <= 0f) 1f else ((fraction - 0.6f) / 0.4f).coerceIn(0f, 1f)
            }
            .semantics { heading() },
        horizontalAlignment = Alignment.CenterHorizontally,
    ) {
        BasicText(
            text,
            style = Typography.base.copy(color = colors.label, fontWeight = FontWeight.SemiBold, textAlign = TextAlign.Center),
            maxLines = 1,
            overflow = TextOverflow.Ellipsis,
        )
        if (subtitle != null) {
            BasicText(
                subtitle,
                style = Typography.xs2.copy(color = colors.labelSecondary, textAlign = TextAlign.Center),
                maxLines = 1,
                overflow = TextOverflow.Ellipsis,
            )
        }
    }
}

@Composable
fun HeaderLargeTitle(
    text: String,
    modifier: Modifier = Modifier,
    subtitle: String? = null,
) {
    val colors = EsuissTheme.colors
    val state = LocalHeaderState.current
    Column(
        modifier = modifier
            .layoutId(HeaderSlot.LargeTitle)
            .graphicsLayer {
                val fraction = state?.collapsedFraction ?: 0f
                alpha = (1f - fraction * 1.4f).coerceIn(0f, 1f)
            }
            .padding(start = 16.dp, end = 16.dp, top = 4.dp, bottom = 8.dp),
        verticalArrangement = Arrangement.spacedBy(2.dp),
    ) {
        BasicText(
            text,
            modifier = Modifier.semantics { heading() },
            style = Typography.xl3.copy(color = colors.label, fontWeight = FontWeight.Bold),
            maxLines = 2,
            overflow = TextOverflow.Ellipsis,
        )
        if (subtitle != null) {
            BasicText(subtitle, style = Typography.sm.copy(color = colors.labelSecondary))
        }
    }
}

@Composable
fun HeaderBack(
    onClick: () -> Unit,
    modifier: Modifier = Modifier,
    text: String? = "Back",
    contentDescription: String = text ?: "Back",
) {
    val colors = EsuissTheme.colors
    val interaction = remember { MutableInteractionSource() }
    val pressed by interaction.collectIsPressedAsState()
    Row(
        modifier = modifier
            .layoutId(HeaderSlot.Back)
            .height(HeaderBarHeight)
            .clickable(
                interactionSource = interaction,
                indication = null,
                role = Role.Button,
                onClickLabel = contentDescription,
                onClick = onClick,
            )
            .graphicsLayer { alpha = if (pressed) 0.4f else 1f }
            .padding(end = 8.dp),
        horizontalArrangement = Arrangement.spacedBy(2.dp),
        verticalAlignment = Alignment.CenterVertically,
    ) {
        Icon(PhosphorIcons.Regular.CaretLeft, contentDescription = if (text == null) contentDescription else null, size = 24.dp, tint = colors.link)
        if (text != null) {
            BasicText(text, style = Typography.base.copy(color = colors.link), maxLines = 1)
        }
    }
}

@Composable
fun HeaderActions(
    modifier: Modifier = Modifier,
    side: HeaderActionsSide = HeaderActionsSide.Trailing,
    content: @Composable RowScope.() -> Unit,
) {
    Row(
        modifier = modifier.layoutId(if (side == HeaderActionsSide.Leading) HeaderSlot.Start else HeaderSlot.End),
        horizontalArrangement = Arrangement.spacedBy(4.dp),
        verticalAlignment = Alignment.CenterVertically,
        content = content,
    )
}
```

```kt title="kotlin/components/Icon.kt"
package com.esuiss.ui.components

import androidx.compose.foundation.Image
import androidx.compose.foundation.layout.size
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.ColorFilter
import androidx.compose.ui.graphics.takeOrElse
import androidx.compose.ui.graphics.vector.ImageVector
import androidx.compose.ui.unit.Dp
import com.esuiss.ui.theme.EsuissTheme

@Composable
fun Icon(
    imageVector: ImageVector,
    contentDescription: String?,
    modifier: Modifier = Modifier,
    size: Dp = LocalIconSize.current,
    tint: Color = LocalContentColor.current.takeOrElse { EsuissTheme.colors.label },
) {
    Image(
        imageVector = imageVector,
        contentDescription = contentDescription,
        modifier = modifier.size(size),
        colorFilter = ColorFilter.tint(tint),
    )
}
```

```kt title="kotlin/components/InputGroup.kt"
package com.esuiss.ui.components

import androidx.compose.foundation.gestures.detectTapGestures
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.RowScope
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.foundation.text.BasicText
import androidx.compose.foundation.text.BasicTextField
import androidx.compose.foundation.text.KeyboardActions
import androidx.compose.foundation.text.KeyboardOptions
import androidx.compose.foundation.text.selection.LocalTextSelectionColors
import androidx.compose.runtime.Composable
import androidx.compose.runtime.CompositionLocalProvider
import androidx.compose.runtime.DisposableEffect
import androidx.compose.runtime.Stable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableIntStateOf
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.runtime.staticCompositionLocalOf
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.focus.FocusRequester
import androidx.compose.ui.focus.focusRequester
import androidx.compose.ui.focus.onFocusChanged
import androidx.compose.ui.graphics.SolidColor
import androidx.compose.ui.input.pointer.pointerInput
import androidx.compose.ui.layout.Layout
import androidx.compose.ui.layout.Placeable
import androidx.compose.ui.layout.layoutId
import androidx.compose.ui.semantics.error
import androidx.compose.ui.semantics.isTraversalGroup
import androidx.compose.ui.semantics.semantics
import androidx.compose.ui.text.input.VisualTransformation
import androidx.compose.ui.unit.Constraints
import androidx.compose.ui.unit.dp
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.Radius
import com.esuiss.ui.theme.Typography

enum class InputGroupAddonAlign { InlineStart, InlineEnd, BlockStart, BlockEnd }

enum class InputGroupButtonSize(internal val buttonSize: ButtonSize) {
    Xs(ButtonSize.Xs),
    Sm(ButtonSize.Sm),
    IconXs(ButtonSize.IconXs),
    IconSm(ButtonSize.IconSm),
}

private object InputGroupControl

@Stable
private class InputGroupState {
    val focusRequester = FocusRequester()
    var focused by mutableStateOf(false)
    var enabled by mutableStateOf(true)
    var invalid by mutableStateOf(false)
    var inlineStart by mutableIntStateOf(0)
    var inlineEnd by mutableIntStateOf(0)
    var blockStart by mutableIntStateOf(0)
    var blockEnd by mutableIntStateOf(0)
    var multiline by mutableIntStateOf(0)
    var controls by mutableIntStateOf(0)
}

@Stable
private class InputGroupAddonState {
    var buttons by mutableIntStateOf(0)
}

private val LocalInputGroup = staticCompositionLocalOf<InputGroupState?> { null }

private val LocalInputGroupAddon = staticCompositionLocalOf<InputGroupAddonState?> { null }

@Composable
fun InputGroup(
    modifier: Modifier = Modifier,
    enabled: Boolean = LocalFieldState.current.enabled,
    invalid: Boolean = LocalFieldState.current.invalid,
    content: @Composable () -> Unit,
) {
    val colors = EsuissTheme.colors
    val state = remember { InputGroupState() }
    state.enabled = enabled
    state.invalid = invalid
    val tall = state.blockStart > 0 || state.blockEnd > 0 || state.multiline > 0
    val item = rememberButtonGroupItem(LocalButtonGroup.current, RoundedCornerShape(if (tall) Radius.xl else Radius.lg))
    CompositionLocalProvider(
        LocalInputGroup provides state,
        LocalTextSelectionColors provides formSelectionColors(colors),
    ) {
        Layout(
            content = content,
            modifier = modifier
                .then(item.modifier)
                .fillMaxWidth()
                .formInputSurface(colors, item.shape, state.focused, invalid, enabled)
                .semantics { isTraversalGroup = true },
        ) { measurables, constraints ->
            val width = if (constraints.hasBoundedWidth) constraints.maxWidth else 320.dp.roundToPx()
            val rowMin = 44.dp.roundToPx()
            val blockStart = measurables.filter { it.layoutId == InputGroupAddonAlign.BlockStart }
                .map { it.measure(Constraints(minWidth = width, maxWidth = width)) }
            val blockEnd = measurables.filter { it.layoutId == InputGroupAddonAlign.BlockEnd }
                .map { it.measure(Constraints(minWidth = width, maxWidth = width)) }
            var used = 0
            val start = measurables.filter { it.layoutId == InputGroupAddonAlign.InlineStart }
                .map { it.measure(Constraints(maxWidth = (width - used).coerceAtLeast(0))).also { p -> used += p.width } }
            val end = measurables.filter { it.layoutId == InputGroupAddonAlign.InlineEnd }
                .map { it.measure(Constraints(maxWidth = (width - used).coerceAtLeast(0))).also { p -> used += p.width } }
            val middleMeasurables = measurables.filter { it.layoutId !is InputGroupAddonAlign }
            val remaining = (width - used).coerceAtLeast(0)
            val share = if (middleMeasurables.isEmpty()) 0 else remaining / middleMeasurables.size
            val middle = middleMeasurables.map { it.measure(Constraints(minWidth = share, maxWidth = share)) }
            val inline: List<Placeable> = start + middle + end
            val rowHeight = maxOf(if (tall) 0 else rowMin, inline.maxOfOrNull { it.height } ?: 0)
            val height = blockStart.sumOf { it.height } + rowHeight + blockEnd.sumOf { it.height }
            layout(width, height.coerceIn(constraints.minHeight, constraints.maxHeight)) {
                var y = 0
                blockStart.forEach {
                    it.placeRelative(0, y)
                    y += it.height
                }
                var x = 0
                inline.forEach {
                    it.placeRelative(x, y + (rowHeight - it.height) / 2)
                    x += it.width
                }
                y += rowHeight
                blockEnd.forEach {
                    it.placeRelative(0, y)
                    y += it.height
                }
            }
        }
    }
}

@Composable
fun InputGroupAddon(
    modifier: Modifier = Modifier,
    align: InputGroupAddonAlign = InputGroupAddonAlign.InlineStart,
    content: @Composable RowScope.() -> Unit,
) {
    val colors = EsuissTheme.colors
    val group = LocalInputGroup.current
    val addon = remember { InputGroupAddonState() }
    if (group != null) {
        DisposableEffect(group, align) {
            when (align) {
                InputGroupAddonAlign.InlineStart -> group.inlineStart += 1
                InputGroupAddonAlign.InlineEnd -> group.inlineEnd += 1
                InputGroupAddonAlign.BlockStart -> group.blockStart += 1
                InputGroupAddonAlign.BlockEnd -> group.blockEnd += 1
            }
            onDispose {
                when (align) {
                    InputGroupAddonAlign.InlineStart -> group.inlineStart -= 1
                    InputGroupAddonAlign.InlineEnd -> group.inlineEnd -= 1
                    InputGroupAddonAlign.BlockStart -> group.blockStart -= 1
                    InputGroupAddonAlign.BlockEnd -> group.blockEnd -= 1
                }
            }
        }
    }
    val enabled = group?.enabled ?: true
    val hasButton = addon.buttons > 0
    val hasControl = (group?.controls ?: 0) > 0 && (group?.multiline ?: 0) == 0
    val edge = if (hasButton) 8.dp else 12.dp
    val padding = when (align) {
        InputGroupAddonAlign.InlineStart -> Modifier.padding(start = edge, top = 8.dp, bottom = 8.dp)
        InputGroupAddonAlign.InlineEnd -> Modifier.padding(end = edge, top = 8.dp, bottom = 8.dp)
        InputGroupAddonAlign.BlockStart -> Modifier.padding(start = 12.dp, end = 12.dp, top = if (hasControl) 14.dp else 12.dp)
        InputGroupAddonAlign.BlockEnd -> Modifier.padding(start = 12.dp, end = 12.dp, bottom = if (hasControl) 14.dp else 12.dp)
    }
    val foreground = if (enabled) colors.labelSecondary else colors.labelQuaternary
    Row(
        modifier = modifier
            .layoutId(align)
            .pointerInput(group) {
                detectTapGestures {
                    if (group != null && group.enabled && group.controls > 0) group.focusRequester.requestFocus()
                }
            }
            .then(padding),
        horizontalArrangement = Arrangement.spacedBy(8.dp, if (align == InputGroupAddonAlign.BlockStart || align == InputGroupAddonAlign.BlockEnd) Alignment.Start else Alignment.CenterHorizontally),
        verticalAlignment = Alignment.CenterVertically,
    ) {
        CompositionLocalProvider(
            LocalInputGroupAddon provides addon,
            LocalContentStyle provides Typography.base.copy(color = foreground),
            LocalContentColor provides foreground,
            LocalIconSize provides 16.dp,
        ) {
            content()
        }
    }
}

@Composable
fun InputGroupText(
    modifier: Modifier = Modifier,
    content: @Composable RowScope.() -> Unit,
) {
    Row(
        modifier = modifier,
        horizontalArrangement = Arrangement.spacedBy(8.dp),
        verticalAlignment = Alignment.CenterVertically,
        content = content,
    )
}

@Composable
fun InputGroupText(text: String, modifier: Modifier = Modifier) {
    BasicText(text, modifier = modifier, style = LocalContentStyle.current, maxLines = 1)
}

@Composable
fun InputGroupButton(
    onClick: () -> Unit,
    modifier: Modifier = Modifier,
    size: InputGroupButtonSize = InputGroupButtonSize.Xs,
    variant: ButtonVariant = ButtonVariant.Ghost,
    enabled: Boolean = true,
    content: @Composable RowScope.() -> Unit,
) {
    val addon = LocalInputGroupAddon.current
    if (addon != null) {
        DisposableEffect(addon) {
            addon.buttons += 1
            onDispose { addon.buttons -= 1 }
        }
    }
    val groupEnabled = LocalInputGroup.current?.enabled ?: true
    Button(
        onClick = onClick,
        modifier = modifier,
        variant = variant,
        size = size.buttonSize,
        enabled = enabled && groupEnabled,
    ) {
        CompositionLocalProvider(LocalIconSize provides if (size == InputGroupButtonSize.Xs) 14.dp else LocalIconSize.current) {
            content()
        }
    }
}

@Composable
fun InputGroupButton(
    text: String,
    onClick: () -> Unit,
    modifier: Modifier = Modifier,
    size: InputGroupButtonSize = InputGroupButtonSize.Xs,
    variant: ButtonVariant = ButtonVariant.Ghost,
    enabled: Boolean = true,
) {
    InputGroupButton(onClick, modifier, size, variant, enabled) {
        BasicText(text, style = LocalContentStyle.current, maxLines = 1)
    }
}

@Composable
private fun RegisterControl(group: InputGroupState?, multiline: Boolean) {
    if (group == null) return
    DisposableEffect(group, multiline) {
        group.controls += 1
        if (multiline) group.multiline += 1
        onDispose {
            group.controls -= 1
            if (multiline) group.multiline -= 1
        }
    }
}

@Composable
fun InputGroupInput(
    value: String,
    onValueChange: (String) -> Unit,
    modifier: Modifier = Modifier,
    placeholder: String? = null,
    readOnly: Boolean = false,
    keyboardOptions: KeyboardOptions = KeyboardOptions.Default,
    keyboardActions: KeyboardActions = KeyboardActions.Default,
    visualTransformation: VisualTransformation = VisualTransformation.None,
) {
    val group = LocalInputGroup.current
    RegisterControl(group, multiline = false)
    val colors = EsuissTheme.colors
    val enabled = group?.enabled ?: true
    val invalid = group?.invalid ?: false
    val textStyle = Typography.base.copy(color = if (enabled) colors.label else colors.labelQuaternary)
    val start = if ((group?.inlineStart ?: 0) > 0) 6.dp else 12.dp
    val end = if ((group?.inlineEnd ?: 0) > 0) 6.dp else 12.dp
    val hasBlockStart = (group?.blockStart ?: 0) > 0
    val hasBlockEnd = (group?.blockEnd ?: 0) > 0
    val top = when {
        hasBlockEnd -> 12.dp
        hasBlockStart -> 8.dp
        else -> 11.dp
    }
    val bottom = when {
        hasBlockStart -> 12.dp
        hasBlockEnd -> 8.dp
        else -> 11.dp
    }
    BasicTextField(
        value = value,
        onValueChange = onValueChange,
        modifier = modifier
            .layoutId(InputGroupControl)
            .then(if (group != null) Modifier.focusRequester(group.focusRequester).onFocusChanged { group.focused = it.isFocused } else Modifier)
            .then(if (invalid) Modifier.semantics { error("Invalid") } else Modifier),
        enabled = enabled,
        readOnly = readOnly,
        textStyle = textStyle,
        keyboardOptions = keyboardOptions,
        keyboardActions = keyboardActions,
        singleLine = true,
        visualTransformation = visualTransformation,
        cursorBrush = SolidColor(colors.accent),
        decorationBox = { inner ->
            Box(
                modifier = Modifier
                    .fillMaxWidth()
                    .padding(start = start, end = end, top = top, bottom = bottom),
                contentAlignment = Alignment.CenterStart,
            ) {
                if (value.isEmpty() && placeholder != null) {
                    BasicText(
                        placeholder,
                        style = textStyle.copy(color = if (enabled) colors.labelSecondary else colors.labelQuaternary),
                        maxLines = 1,
                    )
                }
                inner()
            }
        },
    )
}

@Composable
fun InputGroupTextarea(
    value: String,
    onValueChange: (String) -> Unit,
    modifier: Modifier = Modifier,
    placeholder: String? = null,
    readOnly: Boolean = false,
    minLines: Int = 3,
    maxLines: Int = Int.MAX_VALUE,
    keyboardOptions: KeyboardOptions = KeyboardOptions.Default,
    keyboardActions: KeyboardActions = KeyboardActions.Default,
) {
    val group = LocalInputGroup.current
    RegisterControl(group, multiline = true)
    val colors = EsuissTheme.colors
    val enabled = group?.enabled ?: true
    val invalid = group?.invalid ?: false
    val textStyle = Typography.base.copy(color = if (enabled) colors.label else colors.labelQuaternary)
    BasicTextField(
        value = value,
        onValueChange = onValueChange,
        modifier = modifier
            .layoutId(InputGroupControl)
            .then(if (group != null) Modifier.focusRequester(group.focusRequester).onFocusChanged { group.focused = it.isFocused } else Modifier)
            .then(if (invalid) Modifier.semantics { error("Invalid") } else Modifier),
        enabled = enabled,
        readOnly = readOnly,
        textStyle = textStyle,
        keyboardOptions = keyboardOptions,
        keyboardActions = keyboardActions,
        minLines = minLines,
        maxLines = maxLines,
        cursorBrush = SolidColor(colors.accent),
        decorationBox = { inner ->
            Box(
                modifier = Modifier
                    .fillMaxWidth()
                    .padding(horizontal = 12.dp, vertical = 10.dp),
                contentAlignment = Alignment.TopStart,
            ) {
                if (value.isEmpty() && placeholder != null) {
                    BasicText(
                        placeholder,
                        style = textStyle.copy(color = if (enabled) colors.labelSecondary else colors.labelQuaternary),
                    )
                }
                inner()
            }
        },
    )
}
```

```kt title="kotlin/components/Item.kt"
package com.esuiss.ui.components

import androidx.compose.foundation.background
import androidx.compose.foundation.border
import androidx.compose.foundation.combinedClickable
import androidx.compose.foundation.interaction.MutableInteractionSource
import androidx.compose.foundation.interaction.collectIsPressedAsState
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.BoxScope
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.ColumnScope
import androidx.compose.foundation.layout.PaddingValues
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.RowScope
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.heightIn
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.foundation.text.BasicText
import androidx.compose.runtime.Composable
import androidx.compose.runtime.CompositionLocalProvider
import androidx.compose.runtime.DisposableEffect
import androidx.compose.runtime.Stable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableIntStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.runtime.staticCompositionLocalOf
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.RectangleShape
import androidx.compose.ui.graphics.Shape
import androidx.compose.ui.layout.Layout
import androidx.compose.ui.layout.Measurable
import androidx.compose.ui.layout.Placeable
import androidx.compose.ui.layout.layoutId
import androidx.compose.ui.semantics.Role
import androidx.compose.ui.semantics.isTraversalGroup
import androidx.compose.ui.semantics.selected
import androidx.compose.ui.semantics.semantics
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.text.style.TextOverflow
import androidx.compose.ui.unit.Constraints
import androidx.compose.ui.unit.Dp
import androidx.compose.ui.unit.dp
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.Radius
import com.esuiss.ui.theme.Typography

enum class ItemVariant { Default, Outline, Muted }

enum class ItemSize(
    internal val horizontalPadding: Dp,
    internal val verticalPadding: Dp,
    internal val gap: Dp,
    internal val contentGap: Dp,
    internal val imageSize: Dp,
) {
    Default(16.dp, 14.dp, 14.dp, 4.dp, 40.dp),
    Sm(14.dp, 12.dp, 14.dp, 4.dp, 32.dp),
    Xs(12.dp, 10.dp, 10.dp, 2.dp, 24.dp),
}

enum class ItemGroupVariant { Default, Inset }

enum class ItemMediaVariant { Default, Icon, Image }

private enum class ItemSlot { Media, Content, Actions, Header, Footer }

@Stable
private class ItemState(val size: ItemSize) {
    var descriptions by mutableIntStateOf(0)
}

private val LocalItemState = staticCompositionLocalOf<ItemState?> { null }

internal val LocalItemGroupVariant = staticCompositionLocalOf<ItemGroupVariant?> { null }

@Composable
fun ItemGroup(
    modifier: Modifier = Modifier,
    variant: ItemGroupVariant = ItemGroupVariant.Default,
    content: @Composable ColumnScope.() -> Unit,
) {
    val colors = EsuissTheme.colors
    val inset = variant == ItemGroupVariant.Inset
    val shape = RoundedCornerShape(Radius.xl2)
    Column(
        modifier = modifier
            .fillMaxWidth()
            .then(if (inset) Modifier.clip(shape).background(colors.surfaceSecondary, shape) else Modifier)
            .semantics { isTraversalGroup = true },
        verticalArrangement = if (inset) Arrangement.Top else Arrangement.spacedBy(16.dp),
    ) {
        CompositionLocalProvider(LocalItemGroupVariant provides variant) {
            content()
        }
    }
}

@Composable
fun ItemSeparator(modifier: Modifier = Modifier) {
    val inset = LocalItemGroupVariant.current == ItemGroupVariant.Inset
    Box(
        modifier = modifier
            .fillMaxWidth()
            .padding(start = if (inset) 16.dp else 0.dp)
            .padding(vertical = if (inset) 0.dp else 8.dp)
            .height(1.dp)
            .background(EsuissTheme.colors.separator),
    )
}

@Composable
fun Item(
    modifier: Modifier = Modifier,
    variant: ItemVariant = ItemVariant.Default,
    size: ItemSize = ItemSize.Default,
    onClick: (() -> Unit)? = null,
    onLongClick: (() -> Unit)? = null,
    enabled: Boolean = true,
    selected: Boolean? = null,
    role: Role? = Role.Button,
    onClickLabel: String? = null,
    content: @Composable () -> Unit,
) {
    val inset = LocalItemGroupVariant.current == ItemGroupVariant.Inset
    val shape = if (inset) RectangleShape else RoundedCornerShape(Radius.xl)
    ItemFrame(
        modifier = modifier,
        variant = variant,
        size = size,
        shape = shape,
        padding = PaddingValues(horizontal = size.horizontalPadding, vertical = size.verticalPadding),
        onClick = onClick,
        onLongClick = onLongClick,
        enabled = enabled,
        selected = selected,
        role = role,
        onClickLabel = onClickLabel,
        content = content,
    )
}

@Composable
internal fun ItemFrame(
    modifier: Modifier,
    variant: ItemVariant,
    size: ItemSize,
    shape: Shape,
    padding: PaddingValues,
    onClick: (() -> Unit)?,
    onLongClick: (() -> Unit)?,
    enabled: Boolean,
    selected: Boolean?,
    role: Role?,
    onClickLabel: String?,
    minHeight: Dp = 0.dp,
    gap: Dp = size.gap,
    content: @Composable () -> Unit,
) {
    val colors = EsuissTheme.colors
    val interaction = remember { MutableInteractionSource() }
    val pressed by interaction.collectIsPressedAsState()
    val state = remember(size) { ItemState(size) }
    val interactive = onClick != null || onLongClick != null
    val background = when {
        pressed && enabled && interactive -> colors.itemPressed
        selected == true -> colors.itemSelected
        variant == ItemVariant.Muted -> colors.surfaceSecondary.copy(alpha = colors.surfaceSecondary.alpha * 0.5f)
        else -> Color.Transparent
    }
    val foreground = if (enabled) colors.label else colors.labelQuaternary
    val behaviour = if (interactive) {
        Modifier
            .heightIn(min = maxOf(minHeight, 48.dp))
            .combinedClickable(
                interactionSource = interaction,
                indication = null,
                enabled = enabled,
                onClickLabel = onClickLabel,
                role = role,
                onLongClick = onLongClick,
                onClick = onClick ?: {},
            )
    } else {
        Modifier
            .heightIn(min = minHeight)
            .semantics(mergeDescendants = true) {}
    }
    Box(
        modifier = modifier
            .fillMaxWidth()
            .clip(shape)
            .background(background, shape)
            .then(if (variant == ItemVariant.Outline) Modifier.border(1.dp, colors.separator, shape) else Modifier)
            .then(if (selected != null) Modifier.semantics { this.selected = selected } else Modifier)
            .then(behaviour)
            .padding(padding),
        contentAlignment = Alignment.CenterStart,
    ) {
        CompositionLocalProvider(
            LocalItemState provides state,
            LocalContentStyle provides Typography.base.copy(color = foreground),
            LocalContentColor provides foreground,
            LocalIconSize provides 16.dp,
        ) {
            ItemLayout(gap, state.descriptions > 0, content)
        }
    }
}

@Composable
private fun ItemLayout(gap: Dp, mediaAtTop: Boolean, content: @Composable () -> Unit) {
    Layout(content = content, modifier = Modifier.fillMaxWidth()) { measurables, constraints ->
        val gapPx = gap.roundToPx()
        val nudge = if (mediaAtTop) 2.dp.roundToPx() else 0
        val lines = mutableListOf<List<Measurable>>()
        var current = mutableListOf<Measurable>()
        measurables.forEach { measurable ->
            val slot = measurable.layoutId
            if (slot == ItemSlot.Header || slot == ItemSlot.Footer) {
                if (current.isNotEmpty()) lines += current
                lines += listOf(measurable)
                current = mutableListOf()
            } else {
                current += measurable
            }
        }
        if (current.isNotEmpty()) lines += current
        val bounded = constraints.hasBoundedWidth
        val available = if (bounded) constraints.maxWidth else Constraints.Infinity
        val measured = lines.map { line ->
            val placeables = arrayOfNulls<Placeable>(line.size)
            val flexIndex = line.indexOfFirst { it.layoutId == ItemSlot.Content }
            var used = gapPx * (line.size - 1).coerceAtLeast(0)
            line.forEachIndexed { index, measurable ->
                if (index == flexIndex) return@forEachIndexed
                val full = measurable.layoutId == ItemSlot.Header || measurable.layoutId == ItemSlot.Footer
                val childConstraints = when {
                    full && bounded -> Constraints(minWidth = available, maxWidth = available)
                    bounded -> Constraints(maxWidth = (available - used).coerceAtLeast(0))
                    else -> Constraints()
                }
                val placeable = measurable.measure(childConstraints)
                placeables[index] = placeable
                used += placeable.width
            }
            if (flexIndex >= 0) {
                val remaining = (available - used).coerceAtLeast(0)
                placeables[flexIndex] = line[flexIndex].measure(
                    if (bounded) Constraints(minWidth = remaining, maxWidth = remaining) else Constraints(),
                )
            }
            placeables.requireNoNulls().toList()
        }
        val width = if (bounded) {
            constraints.maxWidth
        } else {
            measured.maxOfOrNull { line -> line.sumOf { it.width } + gapPx * (line.size - 1).coerceAtLeast(0) } ?: 0
        }
        val lineHeights = measured.mapIndexed { lineIndex, line ->
            line.mapIndexed { index, placeable ->
                val isMedia = lines[lineIndex][index].layoutId == ItemSlot.Media
                placeable.height + if (isMedia) nudge else 0
            }.maxOrNull() ?: 0
        }
        val height = (lineHeights.sum() + gapPx * (measured.size - 1).coerceAtLeast(0))
            .coerceIn(constraints.minHeight, constraints.maxHeight)
        layout(width, height) {
            var y = 0
            measured.forEachIndexed { lineIndex, line ->
                val lineHeight = lineHeights[lineIndex]
                var x = 0
                line.forEachIndexed { index, placeable ->
                    val isMedia = lines[lineIndex][index].layoutId == ItemSlot.Media
                    val top = if (isMedia && mediaAtTop) nudge else (lineHeight - placeable.height) / 2
                    placeable.placeRelative(x, y + top)
                    x += placeable.width + gapPx
                }
                y += lineHeight + gapPx
            }
        }
    }
}

@Composable
fun ItemMedia(
    modifier: Modifier = Modifier,
    variant: ItemMediaVariant = ItemMediaVariant.Default,
    content: @Composable BoxScope.() -> Unit,
) {
    val size = LocalItemState.current?.size ?: ItemSize.Default
    val sizing = when (variant) {
        ItemMediaVariant.Image -> {
            val shape = RoundedCornerShape(if (size == ItemSize.Xs) Radius.sm else Radius.md)
            Modifier.size(size.imageSize).clip(shape)
        }
        else -> Modifier
    }
    Box(
        modifier = modifier.layoutId(ItemSlot.Media).then(sizing),
        contentAlignment = Alignment.Center,
    ) {
        CompositionLocalProvider(LocalIconSize provides if (variant == ItemMediaVariant.Icon) 16.dp else LocalIconSize.current) {
            content()
        }
    }
}

@Composable
fun ItemContent(
    modifier: Modifier = Modifier,
    content: @Composable ColumnScope.() -> Unit,
) {
    val size = LocalItemState.current?.size ?: ItemSize.Default
    Column(
        modifier = modifier.layoutId(ItemSlot.Content),
        verticalArrangement = Arrangement.spacedBy(size.contentGap),
        content = content,
    )
}

@Composable
fun ItemTitle(
    modifier: Modifier = Modifier,
    content: @Composable RowScope.() -> Unit,
) {
    val color = LocalContentColor.current
    Row(
        modifier = modifier,
        horizontalArrangement = Arrangement.spacedBy(8.dp),
        verticalAlignment = Alignment.CenterVertically,
    ) {
        CompositionLocalProvider(
            LocalContentStyle provides Typography.base.copy(color = color, fontWeight = FontWeight.SemiBold),
        ) {
            content()
        }
    }
}

@Composable
fun ItemTitle(text: String, modifier: Modifier = Modifier) {
    val color = LocalContentColor.current
    BasicText(
        text,
        modifier = modifier,
        style = Typography.base.copy(color = color, fontWeight = FontWeight.SemiBold),
        maxLines = 1,
        overflow = TextOverflow.Ellipsis,
    )
}

@Composable
fun ItemDescription(text: String, modifier: Modifier = Modifier) {
    val state = LocalItemState.current
    if (state != null) {
        DisposableEffect(state) {
            state.descriptions += 1
            onDispose { state.descriptions -= 1 }
        }
    }
    BasicText(
        text,
        modifier = modifier,
        style = Typography.sm.copy(color = EsuissTheme.colors.labelSecondary),
        maxLines = 2,
        overflow = TextOverflow.Ellipsis,
    )
}

@Composable
fun ItemActions(
    modifier: Modifier = Modifier,
    content: @Composable RowScope.() -> Unit,
) {
    Row(
        modifier = modifier.layoutId(ItemSlot.Actions),
        horizontalArrangement = Arrangement.spacedBy(8.dp),
        verticalAlignment = Alignment.CenterVertically,
        content = content,
    )
}

@Composable
fun ItemHeader(
    modifier: Modifier = Modifier,
    content: @Composable RowScope.() -> Unit,
) {
    Row(
        modifier = modifier.layoutId(ItemSlot.Header),
        horizontalArrangement = Arrangement.SpaceBetween,
        verticalAlignment = Alignment.CenterVertically,
        content = content,
    )
}

@Composable
fun ItemFooter(
    modifier: Modifier = Modifier,
    content: @Composable RowScope.() -> Unit,
) {
    Row(
        modifier = modifier.layoutId(ItemSlot.Footer),
        horizontalArrangement = Arrangement.SpaceBetween,
        verticalAlignment = Alignment.CenterVertically,
        content = content,
    )
}
```

```kt title="kotlin/components/Label.kt"
package com.esuiss.ui.components

import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.RowScope
import androidx.compose.foundation.text.BasicText
import androidx.compose.runtime.Composable
import androidx.compose.runtime.CompositionLocalProvider
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.unit.dp
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.Typography

@Composable
fun Label(
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    content: @Composable RowScope.() -> Unit,
) {
    val colors = EsuissTheme.colors
    val color = if (enabled) colors.label else colors.labelQuaternary
    Row(
        modifier = modifier,
        horizontalArrangement = Arrangement.spacedBy(8.dp),
        verticalAlignment = Alignment.CenterVertically,
    ) {
        CompositionLocalProvider(
            LocalContentStyle provides Typography.base.copy(color = color, fontWeight = FontWeight.SemiBold),
            LocalContentColor provides color,
        ) {
            content()
        }
    }
}

@Composable
fun Label(
    text: String,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
) {
    Label(modifier, enabled) {
        BasicText(text, style = LocalContentStyle.current)
    }
}
```

```kt title="kotlin/components/Screen.kt"
package com.esuiss.ui.components

import android.app.Activity
import android.content.Context
import android.content.ContextWrapper
import android.os.Build
import android.view.View
import android.view.Window
import android.view.WindowInsetsController
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.BoxScope
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.ExperimentalLayoutApi
import androidx.compose.foundation.layout.ColumnScope
import androidx.compose.foundation.layout.PaddingValues
import androidx.compose.foundation.layout.WindowInsets
import androidx.compose.foundation.layout.WindowInsetsSides
import androidx.compose.foundation.layout.displayCutout
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.only
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.statusBarsIgnoringVisibility
import androidx.compose.foundation.layout.systemBars
import androidx.compose.foundation.layout.union
import androidx.compose.foundation.layout.windowInsetsPadding
import androidx.compose.foundation.rememberScrollState
import androidx.compose.foundation.verticalScroll
import androidx.compose.runtime.Composable
import androidx.compose.runtime.CompositionLocalProvider
import androidx.compose.runtime.SideEffect
import androidx.compose.runtime.Stable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableIntStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.runtime.staticCompositionLocalOf
import androidx.compose.ui.Modifier
import androidx.compose.ui.platform.LocalView
import androidx.compose.ui.unit.dp
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.Typography

@Stable
internal class KeyboardAccessoryInset {
    var height by mutableIntStateOf(0)
}

internal val LocalKeyboardAccessory = staticCompositionLocalOf<KeyboardAccessoryInset?> { null }

enum class ScreenEdge { Top, Bottom, Left, Right }

enum class ScreenVariant { Default, Secondary }

private val AllScreenEdges = setOf(ScreenEdge.Top, ScreenEdge.Bottom, ScreenEdge.Left, ScreenEdge.Right)

private fun Set<ScreenEdge>.sides(): WindowInsetsSides? = map {
    when (it) {
        ScreenEdge.Top -> WindowInsetsSides.Top
        ScreenEdge.Bottom -> WindowInsetsSides.Bottom
        ScreenEdge.Left -> WindowInsetsSides.Left
        ScreenEdge.Right -> WindowInsetsSides.Right
    }
}.reduceOrNull { sides, side -> sides + side }

internal tailrec fun Context.findActivity(): Activity? = when (this) {
    is Activity -> this
    is ContextWrapper -> baseContext.findActivity()
    else -> null
}

@Suppress("DEPRECATION")
private fun Window.applyLightBars(light: Boolean) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
        val mask = WindowInsetsController.APPEARANCE_LIGHT_STATUS_BARS or WindowInsetsController.APPEARANCE_LIGHT_NAVIGATION_BARS
        insetsController?.setSystemBarsAppearance(if (light) mask else 0, mask)
        return
    }
    var flags = decorView.systemUiVisibility
    flags = if (light) flags or View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR else flags and View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR.inv()
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        flags = if (light) flags or View.SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR else flags and View.SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR.inv()
    }
    if (decorView.systemUiVisibility != flags) decorView.systemUiVisibility = flags
}

@OptIn(ExperimentalLayoutApi::class)
@Composable
fun Screen(
    modifier: Modifier = Modifier,
    edges: Set<ScreenEdge> = AllScreenEdges,
    variant: ScreenVariant = ScreenVariant.Default,
    content: @Composable BoxScope.() -> Unit,
) {
    val colors = EsuissTheme.colors
    val view = LocalView.current
    val light = !colors.isDark
    SideEffect {
        if (!view.isInEditMode) view.context.findActivity()?.window?.applyLightBars(light)
    }
    val sides = edges.sides()
    val accessory = remember { KeyboardAccessoryInset() }
    val fill = when (variant) {
        ScreenVariant.Default -> colors.surface
        ScreenVariant.Secondary -> colors.surfaceSecondary
    }
    Box(
        modifier = modifier
            .fillMaxSize()
            .background(fill)
            .then(
                if (sides != null) {
                    Modifier.windowInsetsPadding(WindowInsets.systemBars.union(WindowInsets.displayCutout).union(WindowInsets.statusBarsIgnoringVisibility).only(sides))
                } else {
                    Modifier
                },
            ),
    ) {
        CompositionLocalProvider(
            LocalKeyboardAccessory provides accessory,
            LocalContentStyle provides Typography.base.copy(color = colors.label),
            LocalContentColor provides colors.label,
        ) {
            content()
        }
    }
}

@Composable
fun ScreenContent(
    modifier: Modifier = Modifier,
    scrollable: Boolean = false,
    contentPadding: PaddingValues = PaddingValues(16.dp),
    verticalArrangement: Arrangement.Vertical = Arrangement.spacedBy(16.dp),
    content: @Composable ColumnScope.() -> Unit,
) {
    Column(
        modifier = modifier
            .fillMaxWidth()
            .then(if (scrollable) Modifier.verticalScroll(rememberScrollState()) else Modifier)
            .padding(contentPadding),
        verticalArrangement = verticalArrangement,
        content = content,
    )
}
```

```kt title="kotlin/components/Separator.kt"
package com.esuiss.ui.components

import androidx.compose.foundation.background
import androidx.compose.foundation.gestures.Orientation
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.fillMaxHeight
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.width
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp
import com.esuiss.ui.theme.EsuissTheme

@Composable
fun Separator(
    modifier: Modifier = Modifier,
    orientation: Orientation = Orientation.Horizontal,
) {
    val sizing = if (orientation == Orientation.Horizontal) {
        Modifier.fillMaxWidth().height(1.dp)
    } else {
        Modifier.fillMaxHeight().width(1.dp)
    }
    Box(modifier.then(sizing).background(EsuissTheme.colors.separator))
}
```

```kt title="kotlin/components/Switch.kt"
package com.esuiss.ui.components

import androidx.compose.animation.core.animateDpAsState
import androidx.compose.animation.core.tween
import androidx.compose.foundation.background
import androidx.compose.foundation.border
import androidx.compose.foundation.interaction.MutableInteractionSource
import androidx.compose.foundation.interaction.collectIsPressedAsState
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.offset
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.selection.toggleable
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.semantics.Role
import androidx.compose.ui.semantics.error
import androidx.compose.ui.semantics.semantics
import androidx.compose.ui.unit.Dp
import androidx.compose.ui.unit.dp
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.shadow

enum class SwitchSize(
    internal val width: Dp,
    internal val height: Dp,
    internal val thumbHeight: Dp,
    internal val thumbWidth: Dp,
    internal val pressedThumbWidth: Dp,
    internal val travel: Dp,
    internal val pressedTravel: Dp,
) {
    Default(52.dp, 24.dp, 20.dp, 32.dp, 36.dp, 16.dp, 12.dp),
    Sm(44.dp, 20.dp, 16.dp, 26.dp, 30.dp, 14.dp, 10.dp),
}

@Composable
fun Switch(
    checked: Boolean,
    onCheckedChange: ((Boolean) -> Unit)?,
    modifier: Modifier = Modifier,
    size: SwitchSize = SwitchSize.Default,
    enabled: Boolean = LocalFieldState.current.enabled,
    invalid: Boolean = LocalFieldState.current.invalid,
    interactionSource: MutableInteractionSource? = null,
) {
    val colors = EsuissTheme.colors
    val haptics = rememberHaptics()
    val source = interactionSource ?: remember { MutableInteractionSource() }
    val pressed by source.collectIsPressedAsState()
    val squeezed = pressed && enabled && onCheckedChange != null
    val spec = tween<Dp>(200, easing = FormEasing)
    val thumbWidth by animateDpAsState(if (squeezed) size.pressedThumbWidth else size.thumbWidth, spec, label = "thumb")
    val travel by animateDpAsState(
        when {
            !checked -> 0.dp
            squeezed -> size.pressedTravel
            else -> size.travel
        },
        spec,
        label = "travel",
    )
    val track = when {
        checked && !enabled -> colors.accentDisabled
        checked -> colors.accent
        !enabled -> colors.controlDisabled
        else -> colors.labelQuaternary
    }
    val border = when {
        invalid && enabled -> colors.danger
        checked && enabled -> colors.accent
        else -> Color.Transparent
    }
    val toggle = if (onCheckedChange != null) {
        Modifier
            .toggleable(
                value = checked,
                interactionSource = source,
                indication = null,
                enabled = enabled,
                role = Role.Switch,
                onValueChange = {
                    haptics.toggle(it)
                    onCheckedChange(it)
                },
            )
            .formTouchTarget()
    } else {
        Modifier
    }
    Box(
        modifier = modifier
            .then(toggle)
            .then(if (invalid) Modifier.semantics { error("Invalid") } else Modifier)
            .size(size.width, size.height)
            .background(track, CircleShape)
            .border(2.dp, border, CircleShape)
            .padding(2.dp),
        contentAlignment = Alignment.CenterStart,
    ) {
        Box(
            Modifier
                .offset(x = travel)
                .size(thumbWidth, size.thumbHeight)
                .shadow(FormShadowSm, CircleShape)
                .background(if (colors.isDark) colors.label else colors.surface, CircleShape),
        )
    }
}
```

4. Update the `com.esuiss.ui` package names to match your project.

## Usage

```tsx
import { SettingsDevice } from "@/components/blocks/settings-device"
```

```tsx
<SettingsDevice />
```

Replace `GROUPS` with your rows and the account details with your user. Use `onAccountPress` and `onRowPress`, which receives the row label, to navigate.