# Login Account

A two-step sign-in that asks for the email first, then reveals the password field, with inline errors.

Login Account 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/login-account

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

```tsx title="uniwind/components/blocks/login-account.tsx"
import { cn } from "cn"
import { ArrowRightIcon } from "phosphor-react-native"
import * as React from "react"
import { I18nManager, Pressable, type TextInput, View } from "react-native"
import {
  FadeIn,
  FadeInDown,
  ReduceMotion,
  useAnimatedStyle,
  useSharedValue,
  withSequence,
  withTiming,
} from "react-native-reanimated"
import { AnimatedView } from "@/components/ui/animated-view"
import { Avatar, AvatarFallback } from "@/components/ui/avatar"
import { Button } from "@/components/ui/button"
import { Checkbox } from "@/components/ui/checkbox"
import { Icon } from "@/components/ui/icon"
import { Input } from "@/components/ui/input"
import { KeyboardScrollView } from "@/components/ui/keyboard-scroll-view"
import { Label } from "@/components/ui/label"
import { Screen } from "@/components/ui/screen"
import { Spinner } from "@/components/ui/spinner"
import { Text } from "@/components/ui/text"

const EMAIL = /.+@.+\..+/

const SHAKE = [-10, 9, -6, 4, 0]

const STEP = { duration: 70, reduceMotion: ReduceMotion.System }

function useShake() {
  const offset = useSharedValue(0)
  const style = useAnimatedStyle(() => ({
    transform: [{ translateX: offset.value }],
  }))
  const shake = React.useCallback(() => {
    offset.value = withSequence(...SHAKE.map((x) => withTiming(x, STEP)))
  }, [offset])
  return { style, shake }
}

function LinkText({
  onPress,
  className,
  children,
}: {
  onPress?: () => void
  className?: string
  children: React.ReactNode
}) {
  return (
    <Pressable
      role="link"
      hitSlop={8}
      onPress={onPress}
      className="active:opacity-60"
    >
      <Text className={cn("text-link", className)}>{children}</Text>
    </Pressable>
  )
}

function SubmitArrow({
  ready,
  busy,
  onPress,
}: {
  ready: boolean
  busy: boolean
  onPress: () => void
}) {
  return (
    <Button
      variant="outline"
      size="icon-sm"
      accessibilityLabel="Continue"
      disabled={!ready || busy}
      onPress={onPress}
      className={cn(
        "me-2.5 size-7.5 border-[1.5px] bg-transparent dark:bg-transparent",
        ready && !busy ? "border-label-secondary" : "border-label-quaternary"
      )}
    >
      {busy ? (
        <Spinner />
      ) : (
        <Icon
          as={ArrowRightIcon}
          weight="bold"
          className={cn(
            "size-3.5",
            ready ? "text-label-secondary" : "text-label-quaternary",
            I18nManager.isRTL && "rotate-180"
          )}
        />
      )}
    </Button>
  )
}

function LoginAccount({
  onForgotPassword,
  onCreateAccount,
  onSubmit,
}: {
  onForgotPassword?: () => void
  onCreateAccount?: () => void
  onSubmit?: (email: string, password: string) => void
}) {
  const [step, setStep] = React.useState<"email" | "password">("email")
  const [email, setEmail] = React.useState("")
  const [password, setPassword] = React.useState("")
  const [remember, setRemember] = React.useState(true)
  const [error, setError] = React.useState("")
  const [busy, setBusy] = React.useState(false)
  const [signedIn, setSignedIn] = React.useState(false)
  const passwordRef = React.useRef<TextInput>(null)
  const { style: shakeStyle, shake } = useShake()

  React.useEffect(() => {
    if (!busy) return
    const timer = setTimeout(() => {
      setBusy(false)
      setSignedIn(true)
    }, 1200)
    return () => clearTimeout(timer)
  }, [busy])

  React.useEffect(() => {
    if (step !== "password") return
    const timer = setTimeout(() => passwordRef.current?.focus(), 380)
    return () => clearTimeout(timer)
  }, [step])

  const fail = (message: string) => {
    setError(message)
    shake()
  }

  const submit = () => {
    if (step === "email") {
      if (!EMAIL.test(email)) return fail("Enter a valid suiss Account.")
      setError("")
      setStep("password")
      return
    }
    if (password.length < 4)
      return fail("Your suiss Account or password was incorrect.")
    setError("")
    onSubmit?.(email, password)
    setBusy(true)
  }

  if (signedIn) {
    return (
      <Screen>
        <View className="flex-1 items-center justify-center p-6">
          <AnimatedView
            entering={FadeInDown.duration(600).reduceMotion(
              ReduceMotion.System
            )}
            className="items-center gap-3.5"
          >
            <Avatar size="xl" className="size-20">
              <AvatarFallback className="bg-surface-secondary dark:bg-surface-secondary">
                <Text className="text-3xl text-label">{email[0]}</Text>
              </AvatarFallback>
            </Avatar>
            <Text role="heading" className="text-3xl font-semibold">
              Hello.
            </Text>
            <Text className="text-lg text-label-secondary">{email}</Text>
            <LinkText
              className="text-lg"
              onPress={() => {
                setSignedIn(false)
                setStep("email")
                setPassword("")
              }}
            >
              Sign out ›
            </LinkText>
          </AnimatedView>
        </View>
      </Screen>
    )
  }

  return (
    <Screen>
      <KeyboardScrollView contentContainerClassName="grow justify-center px-6 py-8">
        <View className="w-full items-center">
          <Text
            role="heading"
            className="mb-8 text-center text-3xl font-semibold"
          >
            Sign in with your suiss Account
          </Text>
          <AnimatedView
            style={shakeStyle}
            className={cn(
              "w-full overflow-hidden rounded-xl border bg-surface",
              error
                ? "border-danger bg-danger/5 dark:bg-danger/10"
                : "border-separator-strong"
            )}
          >
            <View className="flex-row items-center">
              <Input
                value={email}
                onChangeText={(value) => {
                  setEmail(value)
                  setError("")
                  if (step === "password") setStep("email")
                }}
                placeholder="Email or phone number"
                accessibilityLabel="Email or phone number"
                autoComplete="username"
                textContentType="username"
                keyboardType="email-address"
                autoCapitalize="none"
                autoCorrect={false}
                returnKeyType="next"
                submitBehavior="submit"
                onSubmitEditing={submit}
                className="h-14 flex-1 rounded-none border-transparent bg-transparent px-4 text-lg"
              />
              {step === "email" ? (
                <SubmitArrow ready={!!email} busy={busy} onPress={submit} />
              ) : null}
            </View>
            {step === "password" ? (
              <AnimatedView
                entering={FadeIn.duration(300).reduceMotion(
                  ReduceMotion.System
                )}
                className="flex-row items-center border-t border-separator-strong"
              >
                <Input
                  ref={passwordRef}
                  value={password}
                  onChangeText={(value) => {
                    setPassword(value)
                    setError("")
                  }}
                  placeholder="Password"
                  accessibilityLabel="Password"
                  autoComplete="current-password"
                  textContentType="password"
                  secureTextEntry
                  returnKeyType="go"
                  submitBehavior="submit"
                  onSubmitEditing={submit}
                  className="h-14 flex-1 rounded-none border-transparent bg-transparent px-4 text-lg"
                />
                <SubmitArrow ready={!!password} busy={busy} onPress={submit} />
              </AnimatedView>
            ) : null}
          </AnimatedView>
          <Text
            accessibilityLiveRegion="polite"
            className="mt-2.5 min-h-5.5 text-center text-sm text-danger"
          >
            {error}
          </Text>
          <View className="mt-1.5 flex-row items-center gap-2">
            <Checkbox
              checked={remember}
              onCheckedChange={setRemember}
              accessibilityLabelledBy="login-account-remember"
            />
            <Label
              nativeID="login-account-remember"
              onPress={() => setRemember((current) => !current)}
              className="text-sm font-normal"
            >
              Remember me
            </Label>
          </View>
          <View className="mt-10 items-center gap-2.5">
            <LinkText className="text-sm" onPress={onForgotPassword}>
              Forgot password? ›
            </LinkText>
            <View className="flex-row flex-wrap justify-center gap-x-1">
              <Text className="text-sm text-label-secondary">
                Don't have a suiss Account?
              </Text>
              <LinkText className="text-sm" onPress={onCreateAccount}>
                Create yours now ›
              </LinkText>
            </View>
          </View>
        </View>
      </KeyboardScrollView>
    </Screen>
  )
}

export { LoginAccount }
```

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

public struct LoginAccount: View {
  enum Step: Sendable {
    case email, password
  }

  enum FocusField: Hashable {
    case email, password
  }

  private var onForgotPassword: (() -> Void)?
  private var onCreateAccount: (() -> Void)?
  private var onSubmit: ((String, String) -> Void)?
  @State private var step: Step
  @State private var email: String
  @State private var password: String
  @State private var error: LocalizedStringKey?
  @State private var busy: Bool
  @State private var signedIn: Bool
  @State private var remember = true
  @State private var shakes = 0
  @FocusState private var focus: FocusField?
  @Environment(\.accessibilityReduceMotion) private var reduceMotion

  public init(
    onSubmit: ((String, String) -> Void)? = nil,
    onForgotPassword: (() -> Void)? = nil,
    onCreateAccount: (() -> Void)? = nil
  ) {
    self.init(step: .email)
    self.onSubmit = onSubmit
    self.onForgotPassword = onForgotPassword
    self.onCreateAccount = onCreateAccount
  }

  init(
    step: Step,
    email: String = "",
    password: String = "",
    error: LocalizedStringKey? = nil,
    busy: Bool = false,
    signedIn: Bool = false
  ) {
    _step = State(initialValue: step)
    _email = State(initialValue: email)
    _password = State(initialValue: password)
    _error = State(initialValue: error)
    _busy = State(initialValue: busy)
    _signedIn = State(initialValue: signedIn)
  }

  public var body: some View {
    Screen {
      if signedIn {
        welcome
          .transition(.opacity.combined(with: .offset(y: 18)))
      } else {
        form
      }
    }
    .animation(reduceMotion ? nil : .timingCurve(0.32, 0.72, 0, 1, duration: 0.45), value: step)
    .animation(reduceMotion ? nil : .timingCurve(0.32, 0.72, 0, 1, duration: 0.6), value: signedIn)
  }

  private var form: some View {
    KeyboardScrollView {
      VStack(spacing: 0) {
        Text("Sign in with your suiss Account")
          .scaledTextStyle(.xl2, weight: .bold)
          .multilineTextAlignment(.center)
          .fixedSize(horizontal: false, vertical: true)
          .padding(.bottom, 32)
        fields
          .shake(trigger: shakes)
        Text(error ?? "")
          .scaledTextStyle(.xs)
          .foregroundStyle(Color.danger)
          .frame(minHeight: 22)
          .padding(.top, 10)
          .accessibilityHidden(error == nil)
        Toggle(isOn: $remember) {
          Text("Remember me")
            .scaledFont(.sm)
            .foregroundStyle(Color.label)
        }
        .toggleStyle(.checkbox)
        .padding(.top, 6)
        VStack(spacing: 10) {
          Button("Forgot password? ›") { onForgotPassword?() }
            .buttonStyle(LoginAccountLinkStyle())
          ViewThatFits(in: .horizontal) {
            HStack(spacing: 4) { createAccount }
            VStack(spacing: 4) { createAccount }
          }
        }
        .padding(.top, 40)
      }
      .frame(maxWidth: .infinity)
      .padding(.horizontal, 24)
      .padding(.top, 72)
      .padding(.bottom, 24)
    }
  }

  @ViewBuilder private var createAccount: some View {
    Text("Don't have a suiss Account?")
      .scaledFont(.sm)
      .foregroundStyle(Color.labelSecondary)
    Button("Create yours now ›") { onCreateAccount?() }
      .buttonStyle(LoginAccountLinkStyle())
  }

  private var fields: some View {
    let shape = RoundedRectangle(cornerRadius: Radius.xl, style: .continuous)
    let invalid = error != nil
    return VStack(spacing: 0) {
      HStack(spacing: 0) {
        TextField("Email or phone number", text: $email)
          .textContentType(.username)
          .keyboardType(.emailAddress)
          .textInputAutocapitalization(.never)
          .autocorrectionDisabled()
          .submitLabel(.continue)
          .focused($focus, equals: .email)
          .onSubmit(submit)
          .onChange(of: email) {
            error = nil
            if step == .password { step = .email }
          }
          .modifier(LoginAccountFieldText())
        if step == .email {
          LoginAccountArrow(ready: !email.isEmpty, busy: busy, action: submit)
        }
      }
      if step == .password {
        Color.separatorStrong.frame(height: 1)
        HStack(spacing: 0) {
          SecureField("Password", text: $password)
            .textContentType(.password)
            .submitLabel(.go)
            .focused($focus, equals: .password)
            .onSubmit(submit)
            .onChange(of: password) { error = nil }
            .modifier(LoginAccountFieldText())
          LoginAccountArrow(ready: !password.isEmpty, busy: busy, action: submit)
        }
        .transition(.move(edge: .top).combined(with: .opacity))
      }
    }
    .background(invalid ? Color.dangerSurface : .surface, in: shape)
    .clipShape(shape)
    .overlay {
      shape.strokeBorder(invalid ? Color.danger : focus != nil ? .focus : .separatorStrong, lineWidth: 1)
    }
    .animation(.easeInOut(duration: 0.2), value: invalid)
  }

  private var welcome: some View {
    VStack(spacing: 14) {
      Avatar(size: .xl) {
        Text(verbatim: String(email.prefix(1)).uppercased())
          .scaledFont(.xl2, weight: .semibold)
          .foregroundStyle(Color.label)
          .frame(maxWidth: .infinity, maxHeight: .infinity)
          .background(Color.surfaceSecondary, in: Circle())
      }
      Text("Hello.")
        .scaledTextStyle(.xl3, weight: .bold)
      Text(verbatim: email)
        .scaledTextStyle(.lg)
        .foregroundStyle(Color.labelSecondary)
      Button("Sign out ›") {
        signedIn = false
        step = .email
        password = ""
      }
      .buttonStyle(LoginAccountLinkStyle(style: .lg))
    }
    .multilineTextAlignment(.center)
    .padding(24)
    .frame(maxWidth: .infinity, maxHeight: .infinity)
  }

  private func submit() {
    guard !busy else { return }
    if step == .email {
      guard email.wholeMatch(of: /.+@.+\..+/) != nil else {
        return fail("Enter a valid suiss Account.")
      }
      error = nil
      step = .password
      focus = .password
      return
    }
    guard password.count >= 4 else {
      return fail("Your suiss Account or password was incorrect.")
    }
    error = nil
    onSubmit?(email, password)
    busy = true
    focus = nil
    Task {
      try? await Task.sleep(for: .milliseconds(1200))
      busy = false
      signedIn = true
    }
  }

  private func fail(_ message: LocalizedStringKey) {
    error = message
    shakes += 1
  }
}

private struct LoginAccountFieldText: ViewModifier {
  func body(content: Content) -> some View {
    content
      .scaledFont(.lg)
      .foregroundStyle(Color.label)
      .tint(Color.accent)
      .padding(.horizontal, 16)
      .frame(maxWidth: .infinity, minHeight: 56, alignment: .leading)
  }
}

private struct LoginAccountArrow: View {
  let ready: Bool
  let busy: Bool
  let action: () -> Void

  var body: some View {
    Button(action: action) {
      Group {
        if busy {
          Spinner(.sm)
        } else {
          Ph.arrowRight.bold
            .frame(width: 14, height: 14)
            .flipsForRightToLeftLayoutDirection(true)
        }
      }
      .foregroundStyle(Color.labelSecondary)
      .frame(width: 30, height: 30)
      .overlay {
        Circle().strokeBorder(ready ? Color.labelSecondary : .labelQuaternary, lineWidth: 1.5)
      }
      .frame(width: 44, height: 44)
      .contentShape(Rectangle())
    }
    .buttonStyle(.plain)
    .disabled(!ready || busy)
    .opacity(ready || busy ? 1 : 0.6)
    .padding(.trailing, 6)
    .accessibilityLabel(Text("Continue"))
  }
}

private struct LoginAccountLinkStyle: ButtonStyle {
  var style: TextStyle = .sm

  func makeBody(configuration: Configuration) -> some View {
    configuration.label
      .scaledFont(style)
      .foregroundStyle(Color.link)
      .opacity(configuration.isPressed ? 0.5 : 1)
      .frame(minHeight: 32)
      .contentShape(Rectangle())
  }
}
```

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

import androidx.compose.animation.AnimatedVisibility
import androidx.compose.animation.core.Animatable
import androidx.compose.animation.core.CubicBezierEasing
import androidx.compose.animation.core.keyframes
import androidx.compose.animation.core.tween
import androidx.compose.animation.expandVertically
import androidx.compose.animation.shrinkVertically
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.Box
import androidx.compose.foundation.layout.BoxWithConstraints
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.Spacer
import androidx.compose.foundation.layout.fillMaxSize
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.layout.widthIn
import androidx.compose.foundation.selection.toggleable
import androidx.compose.foundation.shape.CircleShape
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.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
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.draw.clip
import androidx.compose.ui.focus.FocusRequester
import androidx.compose.ui.focus.focusRequester
import androidx.compose.ui.graphics.SolidColor
import androidx.compose.ui.graphics.graphicsLayer
import androidx.compose.ui.semantics.LiveRegionMode
import androidx.compose.ui.semantics.Role
import androidx.compose.ui.semantics.contentDescription
import androidx.compose.ui.semantics.error
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.text.input.ImeAction
import androidx.compose.ui.text.input.KeyboardType
import androidx.compose.ui.text.input.PasswordVisualTransformation
import androidx.compose.ui.text.input.VisualTransformation
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.ArrowRight
import com.esuiss.ui.components.Avatar
import com.esuiss.ui.components.AvatarSize
import com.esuiss.ui.components.Checkbox
import com.esuiss.ui.components.Icon
import com.esuiss.ui.components.KeyboardScrollView
import com.esuiss.ui.components.Screen
import com.esuiss.ui.components.Spinner
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.Radius
import com.esuiss.ui.theme.Typography
import kotlinx.coroutines.delay
import kotlinx.coroutines.launch

private val EmailPattern = Regex(".+@.+\\..+")

private val RevealEasing = CubicBezierEasing(0.32f, 0.72f, 0f, 1f)

private enum class LoginStep { Email, Password }

@Composable
fun LoginAccount(
    modifier: Modifier = Modifier,
    onSubmit: (email: String, password: String) -> Unit = { _, _ -> },
    onForgotPassword: () -> Unit = {},
    onCreateAccount: () -> Unit = {},
) {
    var step by rememberSaveable { mutableStateOf(LoginStep.Email) }
    var email by rememberSaveable { mutableStateOf("") }
    var password by remember { mutableStateOf("") }
    var error by remember { mutableStateOf("") }
    var busy by remember { mutableStateOf(false) }
    var signedIn by rememberSaveable { mutableStateOf(false) }
    var rememberMe by rememberSaveable { mutableStateOf(true) }
    val shake = remember { Animatable(0f) }
    val scope = rememberCoroutineScope()
    val passwordFocus = remember { FocusRequester() }

    fun fail(message: String) {
        error = message
        scope.launch {
            shake.animateTo(
                0f,
                keyframes {
                    durationMillis = 420
                    0f at 0
                    -10f at 84
                    9f at 168
                    -6f at 252
                    4f at 336
                },
            )
        }
    }

    fun submit() {
        if (busy) return
        if (step == LoginStep.Email) {
            if (!EmailPattern.matches(email)) return fail("Enter a valid suiss Account.")
            error = ""
            step = LoginStep.Password
            return
        }
        if (password.length < 4) return fail("Your suiss Account or password was incorrect.")
        error = ""
        onSubmit(email, password)
        busy = true
    }

    LaunchedEffect(busy) {
        if (!busy) return@LaunchedEffect
        delay(1200)
        busy = false
        signedIn = true
    }

    LaunchedEffect(step) {
        if (step != LoginStep.Password) return@LaunchedEffect
        delay(380)
        runCatching { passwordFocus.requestFocus() }
    }

    Screen(modifier) {
        if (signedIn) {
            Greeting(email) {
                signedIn = false
                step = LoginStep.Email
                password = ""
            }
            return@Screen
        }
        CenteredScroll {
            BasicText(
                "Sign in with your suiss Account",
                modifier = Modifier.semantics { heading() },
                style = Typography.xl3.copy(
                    color = EsuissTheme.colors.label,
                    fontWeight = FontWeight.SemiBold,
                    textAlign = TextAlign.Center,
                ),
            )
            Spacer(Modifier.height(32.dp))
            FieldStack(
                invalid = error.isNotEmpty(),
                modifier = Modifier.graphicsLayer { translationX = shake.value.dp.toPx() },
            ) {
                Row(verticalAlignment = Alignment.CenterVertically) {
                    StackInput(
                        value = email,
                        onValueChange = {
                            email = it
                            error = ""
                            if (step == LoginStep.Password) step = LoginStep.Email
                        },
                        placeholder = "Email or phone number",
                        invalid = step == LoginStep.Email && error.isNotEmpty(),
                        keyboardType = KeyboardType.Email,
                        imeAction = ImeAction.Next,
                        onAction = ::submit,
                        modifier = Modifier.weight(1f),
                    )
                    if (step == LoginStep.Email) {
                        SubmitArrow(ready = email.isNotEmpty(), busy = busy, onClick = ::submit)
                    }
                }
                AnimatedVisibility(
                    visible = step == LoginStep.Password,
                    enter = expandVertically(tween(450, easing = RevealEasing)),
                    exit = shrinkVertically(tween(450, easing = RevealEasing)),
                ) {
                    Column {
                        Box(
                            Modifier
                                .fillMaxWidth()
                                .height(1.dp)
                                .background(EsuissTheme.colors.separatorStrong),
                        )
                        Row(verticalAlignment = Alignment.CenterVertically) {
                            StackInput(
                                value = password,
                                onValueChange = {
                                    password = it
                                    error = ""
                                },
                                placeholder = "Password",
                                invalid = step == LoginStep.Password && error.isNotEmpty(),
                                keyboardType = KeyboardType.Password,
                                imeAction = ImeAction.Go,
                                onAction = ::submit,
                                password = true,
                                modifier = Modifier
                                    .weight(1f)
                                    .focusRequester(passwordFocus),
                            )
                            SubmitArrow(ready = password.isNotEmpty(), busy = busy, onClick = ::submit)
                        }
                    }
                }
            }
            BasicText(
                error,
                modifier = Modifier
                    .padding(top = 10.dp)
                    .heightIn(min = 22.dp)
                    .semantics { liveRegion = LiveRegionMode.Polite },
                style = Typography.sm.copy(color = EsuissTheme.colors.danger, textAlign = TextAlign.Center),
            )
            RememberMe(rememberMe) { rememberMe = it }
            Spacer(Modifier.height(40.dp))
            Column(
                horizontalAlignment = Alignment.CenterHorizontally,
                verticalArrangement = Arrangement.spacedBy(10.dp),
            ) {
                LinkText("Forgot password? ›", onForgotPassword)
                BasicText(
                    "Don't have a suiss Account?",
                    style = Typography.sm.copy(color = EsuissTheme.colors.labelSecondary, textAlign = TextAlign.Center),
                )
                LinkText("Create yours now ›", onCreateAccount)
            }
        }
    }
}

@Composable
private fun CenteredScroll(content: @Composable ColumnScope.() -> Unit) {
    BoxWithConstraints(Modifier.fillMaxSize()) {
        val height = maxHeight
        KeyboardScrollView(modifier = Modifier.fillMaxSize()) {
            Column(
                modifier = Modifier
                    .fillMaxWidth()
                    .heightIn(min = height)
                    .padding(PaddingValues(24.dp)),
                verticalArrangement = Arrangement.Center,
                horizontalAlignment = Alignment.CenterHorizontally,
            ) {
                Column(
                    modifier = Modifier.widthIn(max = 460.dp),
                    horizontalAlignment = Alignment.CenterHorizontally,
                    content = content,
                )
            }
        }
    }
}

@Composable
private fun FieldStack(
    invalid: Boolean,
    modifier: Modifier = Modifier,
    content: @Composable ColumnScope.() -> Unit,
) {
    val colors = EsuissTheme.colors
    val shape = RoundedCornerShape(Radius.xl)
    val fill = if (invalid) colors.danger.copy(alpha = if (colors.isDark) 0.1f else 0.05f) else colors.surface
    Column(
        modifier = modifier
            .fillMaxWidth()
            .clip(shape)
            .background(fill, shape)
            .border(1.dp, if (invalid) colors.danger else colors.separatorStrong, shape),
        content = content,
    )
}

@Composable
private fun StackInput(
    value: String,
    onValueChange: (String) -> Unit,
    placeholder: String,
    invalid: Boolean,
    keyboardType: KeyboardType,
    imeAction: ImeAction,
    onAction: () -> Unit,
    modifier: Modifier = Modifier,
    password: Boolean = false,
) {
    val colors = EsuissTheme.colors
    val style = Typography.lg.copy(color = colors.label)
    BasicTextField(
        value = value,
        onValueChange = onValueChange,
        modifier = modifier
            .height(56.dp)
            .semantics {
                contentDescription = placeholder
                if (invalid) error("Invalid")
            },
        textStyle = style,
        singleLine = true,
        cursorBrush = SolidColor(colors.accent),
        visualTransformation = if (password) PasswordVisualTransformation() else VisualTransformation.None,
        keyboardOptions = KeyboardOptions(keyboardType = keyboardType, imeAction = imeAction),
        keyboardActions = KeyboardActions(onNext = { onAction() }, onGo = { onAction() }),
        decorationBox = { inner ->
            Box(Modifier.padding(horizontal = 16.dp), contentAlignment = Alignment.CenterStart) {
                if (value.isEmpty()) {
                    BasicText(placeholder, style = style.copy(color = colors.labelSecondary), maxLines = 1)
                }
                inner()
            }
        },
    )
}

@Composable
private fun SubmitArrow(ready: Boolean, busy: Boolean, onClick: () -> Unit) {
    val colors = EsuissTheme.colors
    val enabled = ready && !busy
    val interaction = remember { MutableInteractionSource() }
    val pressed by interaction.collectIsPressedAsState()
    Box(
        modifier = Modifier
            .padding(end = 10.dp)
            .size(30.dp)
            .graphicsLayer { alpha = if (pressed) 0.6f else 1f }
            .border(1.5.dp, if (enabled || busy) colors.labelSecondary else colors.labelQuaternary, CircleShape)
            .clickable(
                interactionSource = interaction,
                indication = null,
                enabled = enabled,
                role = Role.Button,
                onClick = onClick,
            )
            .semantics { contentDescription = "Continue" },
        contentAlignment = Alignment.Center,
    ) {
        if (busy) {
            Spinner(size = 14.dp, color = colors.labelSecondary)
        } else {
            Icon(
                PhosphorIcons.Bold.ArrowRight,
                contentDescription = null,
                size = 14.dp,
                tint = if (enabled) colors.labelSecondary else colors.labelQuaternary,
            )
        }
    }
}

@Composable
private fun RememberMe(checked: Boolean, onCheckedChange: (Boolean) -> Unit) {
    Row(
        modifier = Modifier
            .padding(top = 6.dp)
            .heightIn(min = 44.dp)
            .toggleable(
                value = checked,
                interactionSource = remember { MutableInteractionSource() },
                indication = null,
                role = Role.Checkbox,
                onValueChange = onCheckedChange,
            ),
        horizontalArrangement = Arrangement.spacedBy(8.dp),
        verticalAlignment = Alignment.CenterVertically,
    ) {
        Checkbox(checked = checked, onCheckedChange = null)
        BasicText("Remember me", style = Typography.sm.copy(color = EsuissTheme.colors.label))
    }
}

@Composable
private fun LinkText(text: String, onClick: () -> Unit, modifier: Modifier = Modifier) {
    val interaction = remember { MutableInteractionSource() }
    val pressed by interaction.collectIsPressedAsState()
    BasicText(
        text,
        modifier = modifier
            .graphicsLayer { alpha = if (pressed) 0.5f else 1f }
            .clickable(interactionSource = interaction, indication = null, role = Role.Button, onClick = onClick)
            .padding(vertical = 4.dp),
        style = Typography.sm.copy(color = EsuissTheme.colors.link, textAlign = TextAlign.Center),
    )
}

@Composable
private fun Greeting(email: String, onSignOut: () -> Unit) {
    val colors = EsuissTheme.colors
    val appear = remember { Animatable(0f) }
    LaunchedEffect(Unit) { appear.animateTo(1f, tween(1000, easing = RevealEasing)) }
    Column(
        modifier = Modifier
            .fillMaxSize()
            .padding(24.dp)
            .graphicsLayer {
                alpha = appear.value
                translationY = (1f - appear.value) * 18.dp.toPx()
            },
        verticalArrangement = Arrangement.spacedBy(14.dp, Alignment.CenterVertically),
        horizontalAlignment = Alignment.CenterHorizontally,
    ) {
        Avatar(
            modifier = Modifier.size(80.dp),
            size = AvatarSize.Xl,
            fallback = {
                Box(
                    Modifier
                        .fillMaxSize()
                        .background(colors.surfaceSecondary, CircleShape),
                    contentAlignment = Alignment.Center,
                ) {
                    BasicText(
                        email.take(1),
                        style = Typography.xl3.copy(color = colors.label),
                    )
                }
            },
        )
        BasicText(
            "Hello.",
            modifier = Modifier.semantics { heading() },
            style = Typography.xl3.copy(color = colors.label, fontWeight = FontWeight.SemiBold),
        )
        BasicText(email, style = Typography.lg.copy(color = colors.labelSecondary, textAlign = TextAlign.Center))
        LinkText("Sign out ›", onSignOut)
    }
}
```

A sign-in screen inside a `KeyboardScrollView`. The email `Input` comes first; when the address looks valid, the password field appears below it and takes focus. Invalid input shakes the form and shows an error. It also has a Remember me `Checkbox` with a `Label`, a Forgot password link, a create account link, and a `Spinner` while signing in, followed by a welcome view with an `Avatar` and a Sign out link.

## Installation

```bash title="Terminal"
npx @esuiss/uim@latest add login-account
```

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

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

The CLI also adds what it builds on: [Avatar](/docs/components/avatar), [Button](/docs/components/button), [Checkbox](/docs/components/checkbox), [Icon](/docs/components/icon), [Input](/docs/components/input), [Keyboard Scroll View](/docs/components/keyboard-scroll-view), [Label](/docs/components/label), [Screen](/docs/components/screen), [Spinner](/docs/components/spinner), [Text](/docs/components/text).

### Manual

**Uniwind**

1. Install the dependencies:

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

2. Add the pieces it builds on: [Avatar](/docs/components/avatar), [Button](/docs/components/button), [Checkbox](/docs/components/checkbox), [Icon](/docs/components/icon), [Input](/docs/components/input), [Keyboard Scroll View](/docs/components/keyboard-scroll-view), [Label](/docs/components/label), [Screen](/docs/components/screen), [Spinner](/docs/components/spinner), [Text](/docs/components/text).

3. Copy the source into `components/blocks/login-account.tsx`:

```tsx title="uniwind/components/blocks/login-account.tsx"
import { cn } from "cn"
import { ArrowRightIcon } from "phosphor-react-native"
import * as React from "react"
import { I18nManager, Pressable, type TextInput, View } from "react-native"
import {
  FadeIn,
  FadeInDown,
  ReduceMotion,
  useAnimatedStyle,
  useSharedValue,
  withSequence,
  withTiming,
} from "react-native-reanimated"
import { AnimatedView } from "@/components/ui/animated-view"
import { Avatar, AvatarFallback } from "@/components/ui/avatar"
import { Button } from "@/components/ui/button"
import { Checkbox } from "@/components/ui/checkbox"
import { Icon } from "@/components/ui/icon"
import { Input } from "@/components/ui/input"
import { KeyboardScrollView } from "@/components/ui/keyboard-scroll-view"
import { Label } from "@/components/ui/label"
import { Screen } from "@/components/ui/screen"
import { Spinner } from "@/components/ui/spinner"
import { Text } from "@/components/ui/text"

const EMAIL = /.+@.+\..+/

const SHAKE = [-10, 9, -6, 4, 0]

const STEP = { duration: 70, reduceMotion: ReduceMotion.System }

function useShake() {
  const offset = useSharedValue(0)
  const style = useAnimatedStyle(() => ({
    transform: [{ translateX: offset.value }],
  }))
  const shake = React.useCallback(() => {
    offset.value = withSequence(...SHAKE.map((x) => withTiming(x, STEP)))
  }, [offset])
  return { style, shake }
}

function LinkText({
  onPress,
  className,
  children,
}: {
  onPress?: () => void
  className?: string
  children: React.ReactNode
}) {
  return (
    <Pressable
      role="link"
      hitSlop={8}
      onPress={onPress}
      className="active:opacity-60"
    >
      <Text className={cn("text-link", className)}>{children}</Text>
    </Pressable>
  )
}

function SubmitArrow({
  ready,
  busy,
  onPress,
}: {
  ready: boolean
  busy: boolean
  onPress: () => void
}) {
  return (
    <Button
      variant="outline"
      size="icon-sm"
      accessibilityLabel="Continue"
      disabled={!ready || busy}
      onPress={onPress}
      className={cn(
        "me-2.5 size-7.5 border-[1.5px] bg-transparent dark:bg-transparent",
        ready && !busy ? "border-label-secondary" : "border-label-quaternary"
      )}
    >
      {busy ? (
        <Spinner />
      ) : (
        <Icon
          as={ArrowRightIcon}
          weight="bold"
          className={cn(
            "size-3.5",
            ready ? "text-label-secondary" : "text-label-quaternary",
            I18nManager.isRTL && "rotate-180"
          )}
        />
      )}
    </Button>
  )
}

function LoginAccount({
  onForgotPassword,
  onCreateAccount,
  onSubmit,
}: {
  onForgotPassword?: () => void
  onCreateAccount?: () => void
  onSubmit?: (email: string, password: string) => void
}) {
  const [step, setStep] = React.useState<"email" | "password">("email")
  const [email, setEmail] = React.useState("")
  const [password, setPassword] = React.useState("")
  const [remember, setRemember] = React.useState(true)
  const [error, setError] = React.useState("")
  const [busy, setBusy] = React.useState(false)
  const [signedIn, setSignedIn] = React.useState(false)
  const passwordRef = React.useRef<TextInput>(null)
  const { style: shakeStyle, shake } = useShake()

  React.useEffect(() => {
    if (!busy) return
    const timer = setTimeout(() => {
      setBusy(false)
      setSignedIn(true)
    }, 1200)
    return () => clearTimeout(timer)
  }, [busy])

  React.useEffect(() => {
    if (step !== "password") return
    const timer = setTimeout(() => passwordRef.current?.focus(), 380)
    return () => clearTimeout(timer)
  }, [step])

  const fail = (message: string) => {
    setError(message)
    shake()
  }

  const submit = () => {
    if (step === "email") {
      if (!EMAIL.test(email)) return fail("Enter a valid suiss Account.")
      setError("")
      setStep("password")
      return
    }
    if (password.length < 4)
      return fail("Your suiss Account or password was incorrect.")
    setError("")
    onSubmit?.(email, password)
    setBusy(true)
  }

  if (signedIn) {
    return (
      <Screen>
        <View className="flex-1 items-center justify-center p-6">
          <AnimatedView
            entering={FadeInDown.duration(600).reduceMotion(
              ReduceMotion.System
            )}
            className="items-center gap-3.5"
          >
            <Avatar size="xl" className="size-20">
              <AvatarFallback className="bg-surface-secondary dark:bg-surface-secondary">
                <Text className="text-3xl text-label">{email[0]}</Text>
              </AvatarFallback>
            </Avatar>
            <Text role="heading" className="text-3xl font-semibold">
              Hello.
            </Text>
            <Text className="text-lg text-label-secondary">{email}</Text>
            <LinkText
              className="text-lg"
              onPress={() => {
                setSignedIn(false)
                setStep("email")
                setPassword("")
              }}
            >
              Sign out ›
            </LinkText>
          </AnimatedView>
        </View>
      </Screen>
    )
  }

  return (
    <Screen>
      <KeyboardScrollView contentContainerClassName="grow justify-center px-6 py-8">
        <View className="w-full items-center">
          <Text
            role="heading"
            className="mb-8 text-center text-3xl font-semibold"
          >
            Sign in with your suiss Account
          </Text>
          <AnimatedView
            style={shakeStyle}
            className={cn(
              "w-full overflow-hidden rounded-xl border bg-surface",
              error
                ? "border-danger bg-danger/5 dark:bg-danger/10"
                : "border-separator-strong"
            )}
          >
            <View className="flex-row items-center">
              <Input
                value={email}
                onChangeText={(value) => {
                  setEmail(value)
                  setError("")
                  if (step === "password") setStep("email")
                }}
                placeholder="Email or phone number"
                accessibilityLabel="Email or phone number"
                autoComplete="username"
                textContentType="username"
                keyboardType="email-address"
                autoCapitalize="none"
                autoCorrect={false}
                returnKeyType="next"
                submitBehavior="submit"
                onSubmitEditing={submit}
                className="h-14 flex-1 rounded-none border-transparent bg-transparent px-4 text-lg"
              />
              {step === "email" ? (
                <SubmitArrow ready={!!email} busy={busy} onPress={submit} />
              ) : null}
            </View>
            {step === "password" ? (
              <AnimatedView
                entering={FadeIn.duration(300).reduceMotion(
                  ReduceMotion.System
                )}
                className="flex-row items-center border-t border-separator-strong"
              >
                <Input
                  ref={passwordRef}
                  value={password}
                  onChangeText={(value) => {
                    setPassword(value)
                    setError("")
                  }}
                  placeholder="Password"
                  accessibilityLabel="Password"
                  autoComplete="current-password"
                  textContentType="password"
                  secureTextEntry
                  returnKeyType="go"
                  submitBehavior="submit"
                  onSubmitEditing={submit}
                  className="h-14 flex-1 rounded-none border-transparent bg-transparent px-4 text-lg"
                />
                <SubmitArrow ready={!!password} busy={busy} onPress={submit} />
              </AnimatedView>
            ) : null}
          </AnimatedView>
          <Text
            accessibilityLiveRegion="polite"
            className="mt-2.5 min-h-5.5 text-center text-sm text-danger"
          >
            {error}
          </Text>
          <View className="mt-1.5 flex-row items-center gap-2">
            <Checkbox
              checked={remember}
              onCheckedChange={setRemember}
              accessibilityLabelledBy="login-account-remember"
            />
            <Label
              nativeID="login-account-remember"
              onPress={() => setRemember((current) => !current)}
              className="text-sm font-normal"
            >
              Remember me
            </Label>
          </View>
          <View className="mt-10 items-center gap-2.5">
            <LinkText className="text-sm" onPress={onForgotPassword}>
              Forgot password? ›
            </LinkText>
            <View className="flex-row flex-wrap justify-center gap-x-1">
              <Text className="text-sm text-label-secondary">
                Don't have a suiss Account?
              </Text>
              <LinkText className="text-sm" onPress={onCreateAccount}>
                Create yours now ›
              </LinkText>
            </View>
          </View>
        </View>
      </KeyboardScrollView>
    </Screen>
  )
}

export { LoginAccount }
```

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-reanimated react-native-svg react-native-worklets
```

2. Add the pieces it builds on: [Avatar](/docs/components/avatar), [Button](/docs/components/button), [Checkbox](/docs/components/checkbox), [Icon](/docs/components/icon), [Input](/docs/components/input), [Keyboard Scroll View](/docs/components/keyboard-scroll-view), [Label](/docs/components/label), [Screen](/docs/components/screen), [Spinner](/docs/components/spinner), [Text](/docs/components/text).

3. Copy the source into `components/blocks/login-account.tsx`:

```tsx title="nativewind/components/blocks/login-account.tsx"
import { cn } from "cn"
import { ArrowRightIcon } from "phosphor-react-native"
import * as React from "react"
import { I18nManager, Pressable, type TextInput, View } from "react-native"
import {
  FadeIn,
  FadeInDown,
  ReduceMotion,
  useAnimatedStyle,
  useSharedValue,
  withSequence,
  withTiming,
} from "react-native-reanimated"
import { AnimatedView } from "@/components/ui/animated-view"
import { Avatar, AvatarFallback } from "@/components/ui/avatar"
import { Button } from "@/components/ui/button"
import { Checkbox } from "@/components/ui/checkbox"
import { Icon } from "@/components/ui/icon"
import { Input } from "@/components/ui/input"
import { KeyboardScrollView } from "@/components/ui/keyboard-scroll-view"
import { Label } from "@/components/ui/label"
import { Screen } from "@/components/ui/screen"
import { Spinner } from "@/components/ui/spinner"
import { Text } from "@/components/ui/text"

const EMAIL = /.+@.+\..+/

const SHAKE = [-10, 9, -6, 4, 0]

const STEP = { duration: 70, reduceMotion: ReduceMotion.System }

function useShake() {
  const offset = useSharedValue(0)
  const style = useAnimatedStyle(() => ({
    transform: [{ translateX: offset.value }],
  }))
  const shake = React.useCallback(() => {
    offset.value = withSequence(...SHAKE.map((x) => withTiming(x, STEP)))
  }, [offset])
  return { style, shake }
}

function LinkText({
  onPress,
  className,
  children,
}: {
  onPress?: () => void
  className?: string
  children: React.ReactNode
}) {
  return (
    <Pressable
      role="link"
      hitSlop={8}
      onPress={onPress}
      className="active:opacity-60"
    >
      <Text className={cn("text-link", className)}>{children}</Text>
    </Pressable>
  )
}

function SubmitArrow({
  ready,
  busy,
  onPress,
}: {
  ready: boolean
  busy: boolean
  onPress: () => void
}) {
  return (
    <Button
      variant="outline"
      size="icon-sm"
      accessibilityLabel="Continue"
      disabled={!ready || busy}
      onPress={onPress}
      className={cn(
        "me-2.5 size-[1.875rem] border-[1.5px] bg-transparent dark:bg-transparent",
        ready && !busy ? "border-label-secondary" : "border-label-quaternary"
      )}
    >
      {busy ? (
        <Spinner />
      ) : (
        <Icon
          as={ArrowRightIcon}
          weight="bold"
          className={cn(
            "size-3.5",
            ready ? "text-label-secondary" : "text-label-quaternary",
            I18nManager.isRTL && "rotate-180"
          )}
        />
      )}
    </Button>
  )
}

function LoginAccount({
  onForgotPassword,
  onCreateAccount,
  onSubmit,
}: {
  onForgotPassword?: () => void
  onCreateAccount?: () => void
  onSubmit?: (email: string, password: string) => void
}) {
  const [step, setStep] = React.useState<"email" | "password">("email")
  const [email, setEmail] = React.useState("")
  const [password, setPassword] = React.useState("")
  const [remember, setRemember] = React.useState(true)
  const [error, setError] = React.useState("")
  const [busy, setBusy] = React.useState(false)
  const [signedIn, setSignedIn] = React.useState(false)
  const passwordRef = React.useRef<TextInput>(null)
  const { style: shakeStyle, shake } = useShake()

  React.useEffect(() => {
    if (!busy) return
    const timer = setTimeout(() => {
      setBusy(false)
      setSignedIn(true)
    }, 1200)
    return () => clearTimeout(timer)
  }, [busy])

  React.useEffect(() => {
    if (step !== "password") return
    const timer = setTimeout(() => passwordRef.current?.focus(), 380)
    return () => clearTimeout(timer)
  }, [step])

  const fail = (message: string) => {
    setError(message)
    shake()
  }

  const submit = () => {
    if (step === "email") {
      if (!EMAIL.test(email)) return fail("Enter a valid suiss Account.")
      setError("")
      setStep("password")
      return
    }
    if (password.length < 4)
      return fail("Your suiss Account or password was incorrect.")
    setError("")
    onSubmit?.(email, password)
    setBusy(true)
  }

  if (signedIn) {
    return (
      <Screen>
        <View className="flex-1 items-center justify-center p-6">
          <AnimatedView
            entering={FadeInDown.duration(600).reduceMotion(
              ReduceMotion.System
            )}
            className="items-center gap-3.5"
          >
            <Avatar size="xl" className="size-20">
              <AvatarFallback className="bg-surface-secondary dark:bg-surface-secondary">
                <Text className="text-3xl text-label">{email[0]}</Text>
              </AvatarFallback>
            </Avatar>
            <Text role="heading" className="text-3xl font-semibold">
              Hello.
            </Text>
            <Text className="text-lg text-label-secondary">{email}</Text>
            <LinkText
              className="text-lg"
              onPress={() => {
                setSignedIn(false)
                setStep("email")
                setPassword("")
              }}
            >
              Sign out ›
            </LinkText>
          </AnimatedView>
        </View>
      </Screen>
    )
  }

  return (
    <Screen>
      <KeyboardScrollView contentContainerClassName="grow justify-center px-6 py-8">
        <View className="w-full items-center">
          <Text
            role="heading"
            className="mb-8 text-center text-3xl font-semibold"
          >
            Sign in with your suiss Account
          </Text>
          <AnimatedView
            style={shakeStyle}
            className={cn(
              "w-full overflow-hidden rounded-xl border bg-surface",
              error
                ? "border-danger bg-danger-5 dark:bg-danger-10"
                : "border-separator-strong"
            )}
          >
            <View className="flex-row items-center">
              <Input
                value={email}
                onChangeText={(value) => {
                  setEmail(value)
                  setError("")
                  if (step === "password") setStep("email")
                }}
                placeholder="Email or phone number"
                accessibilityLabel="Email or phone number"
                autoComplete="username"
                textContentType="username"
                keyboardType="email-address"
                autoCapitalize="none"
                autoCorrect={false}
                returnKeyType="next"
                submitBehavior="submit"
                onSubmitEditing={submit}
                className="h-14 flex-1 rounded-none border-transparent bg-transparent px-4 text-lg"
              />
              {step === "email" ? (
                <SubmitArrow ready={!!email} busy={busy} onPress={submit} />
              ) : null}
            </View>
            {step === "password" ? (
              <AnimatedView
                entering={FadeIn.duration(300).reduceMotion(
                  ReduceMotion.System
                )}
                className="flex-row items-center border-t border-separator-strong"
              >
                <Input
                  ref={passwordRef}
                  value={password}
                  onChangeText={(value) => {
                    setPassword(value)
                    setError("")
                  }}
                  placeholder="Password"
                  accessibilityLabel="Password"
                  autoComplete="current-password"
                  textContentType="password"
                  secureTextEntry
                  returnKeyType="go"
                  submitBehavior="submit"
                  onSubmitEditing={submit}
                  className="h-14 flex-1 rounded-none border-transparent bg-transparent px-4 text-lg"
                />
                <SubmitArrow ready={!!password} busy={busy} onPress={submit} />
              </AnimatedView>
            ) : null}
          </AnimatedView>
          <Text
            accessibilityLiveRegion="polite"
            className="mt-2.5 min-h-[1.375rem] text-center text-sm text-danger"
          >
            {error}
          </Text>
          <View className="mt-1.5 flex-row items-center gap-2">
            <Checkbox
              checked={remember}
              onCheckedChange={setRemember}
              accessibilityLabelledBy="login-account-remember"
            />
            <Label
              nativeID="login-account-remember"
              onPress={() => setRemember((current) => !current)}
              className="text-sm font-normal"
            >
              Remember me
            </Label>
          </View>
          <View className="mt-10 items-center gap-2.5">
            <LinkText className="text-sm" onPress={onForgotPassword}>
              Forgot password? ›
            </LinkText>
            <View className="flex-row flex-wrap justify-center gap-x-1">
              <Text className="text-sm text-label-secondary">
                Don't have a suiss Account?
              </Text>
              <LinkText className="text-sm" onPress={onCreateAccount}>
                Create yours now ›
              </LinkText>
            </View>
          </View>
        </View>
      </KeyboardScrollView>
    </Screen>
  )
}

export { LoginAccount }
```

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-reanimated react-native-svg react-native-worklets
```

2. Add the pieces it builds on: [Avatar](/docs/components/avatar), [Button](/docs/components/button), [Checkbox](/docs/components/checkbox), [Icon](/docs/components/icon), [Input](/docs/components/input), [Keyboard Scroll View](/docs/components/keyboard-scroll-view), [Label](/docs/components/label), [Screen](/docs/components/screen), [Spinner](/docs/components/spinner), [Text](/docs/components/text).

3. Copy the source into `components/blocks/login-account.tsx`:

```tsx title="stylesheet/components/blocks/login-account.tsx"
import { ArrowRightIcon } from "phosphor-react-native"
import * as React from "react"
import {
  I18nManager,
  Pressable,
  StyleSheet,
  type TextInput,
  type TextStyle,
  View,
} from "react-native"
import {
  FadeIn,
  FadeInDown,
  ReduceMotion,
  useAnimatedStyle,
  useSharedValue,
  withSequence,
  withTiming,
} from "react-native-reanimated"
import { AnimatedView } from "@/components/ui/animated-view"
import { Avatar, AvatarFallback } from "@/components/ui/avatar"
import { Button } from "@/components/ui/button"
import { Checkbox } from "@/components/ui/checkbox"
import { Icon } from "@/components/ui/icon"
import { Input } from "@/components/ui/input"
import { KeyboardScrollView } from "@/components/ui/keyboard-scroll-view"
import { Label } from "@/components/ui/label"
import { Screen } from "@/components/ui/screen"
import { Spinner } from "@/components/ui/spinner"
import { Text } from "@/components/ui/text"
import { fontSize, radius, useTheme } from "@/components/ui/theme"

const EMAIL = /.+@.+\..+/

const SHAKE = [-10, 9, -6, 4, 0]

const STEP = { duration: 70, reduceMotion: ReduceMotion.System }

function withAlpha(color: string, alpha: number) {
  if (!color.startsWith("#") || color.length !== 7) return color
  const r = Number.parseInt(color.slice(1, 3), 16)
  const g = Number.parseInt(color.slice(3, 5), 16)
  const b = Number.parseInt(color.slice(5, 7), 16)
  return `rgba(${r}, ${g}, ${b}, ${alpha})`
}

const styles = StyleSheet.create({
  center: {
    flex: 1,
    alignItems: "center",
    justifyContent: "center",
    padding: 24,
  },
  done: { alignItems: "center", gap: 14 },
  scroll: {
    flexGrow: 1,
    justifyContent: "center",
    paddingHorizontal: 24,
    paddingVertical: 32,
  },
  form: { width: "100%", alignItems: "center" },
  title: {
    ...fontSize["3xl"],
    marginBottom: 32,
    textAlign: "center",
    fontWeight: "600",
  },
  fields: {
    width: "100%",
    overflow: "hidden",
    borderRadius: radius.xl,
    borderWidth: 1,
  },
  row: { flexDirection: "row", alignItems: "center" },
  input: {
    ...fontSize.lg,
    height: 56,
    flex: 1,
    borderRadius: 0,
    borderColor: "transparent",
    backgroundColor: "transparent",
    paddingHorizontal: 16,
  },
  arrow: {
    marginEnd: 10,
    width: 30,
    height: 30,
    borderWidth: 1.5,
    backgroundColor: "transparent",
  },
  error: {
    ...fontSize.sm,
    marginTop: 10,
    minHeight: 22,
    textAlign: "center",
  },
  remember: {
    marginTop: 6,
    flexDirection: "row",
    alignItems: "center",
    gap: 8,
  },
  links: { marginTop: 40, alignItems: "center", gap: 10 },
  wrap: {
    flexDirection: "row",
    flexWrap: "wrap",
    justifyContent: "center",
    columnGap: 4,
  },
})

function useShake() {
  const offset = useSharedValue(0)
  const style = useAnimatedStyle(() => ({
    transform: [{ translateX: offset.value }],
  }))
  const shake = React.useCallback(() => {
    offset.value = withSequence(...SHAKE.map((x) => withTiming(x, STEP)))
  }, [offset])
  return { style, shake }
}

function LinkText({
  onPress,
  style,
  children,
}: {
  onPress?: () => void
  style?: TextStyle
  children: React.ReactNode
}) {
  const { colors } = useTheme()
  return (
    <Pressable
      role="link"
      hitSlop={8}
      onPress={onPress}
      style={({ pressed }) => pressed && { opacity: 0.6 }}
    >
      <Text style={[{ color: colors.link }, style]}>{children}</Text>
    </Pressable>
  )
}

function SubmitArrow({
  ready,
  busy,
  onPress,
}: {
  ready: boolean
  busy: boolean
  onPress: () => void
}) {
  const { colors } = useTheme()
  return (
    <Button
      variant="outline"
      size="icon-sm"
      accessibilityLabel="Continue"
      disabled={!ready || busy}
      onPress={onPress}
      style={[
        styles.arrow,
        {
          borderColor:
            ready && !busy ? colors.labelSecondary : colors.labelQuaternary,
        },
      ]}
    >
      {busy ? (
        <Spinner />
      ) : (
        <Icon
          as={ArrowRightIcon}
          weight="bold"
          size={14}
          color={ready ? colors.labelSecondary : colors.labelQuaternary}
          style={
            I18nManager.isRTL ? { transform: [{ rotate: "180deg" }] } : null
          }
        />
      )}
    </Button>
  )
}

function LoginAccount({
  onForgotPassword,
  onCreateAccount,
  onSubmit,
}: {
  onForgotPassword?: () => void
  onCreateAccount?: () => void
  onSubmit?: (email: string, password: string) => void
}) {
  const { colors, isDark } = useTheme()
  const [step, setStep] = React.useState<"email" | "password">("email")
  const [email, setEmail] = React.useState("")
  const [password, setPassword] = React.useState("")
  const [remember, setRemember] = React.useState(true)
  const [error, setError] = React.useState("")
  const [busy, setBusy] = React.useState(false)
  const [signedIn, setSignedIn] = React.useState(false)
  const passwordRef = React.useRef<TextInput>(null)
  const { style: shakeStyle, shake } = useShake()

  React.useEffect(() => {
    if (!busy) return
    const timer = setTimeout(() => {
      setBusy(false)
      setSignedIn(true)
    }, 1200)
    return () => clearTimeout(timer)
  }, [busy])

  React.useEffect(() => {
    if (step !== "password") return
    const timer = setTimeout(() => passwordRef.current?.focus(), 380)
    return () => clearTimeout(timer)
  }, [step])

  const fail = (message: string) => {
    setError(message)
    shake()
  }

  const submit = () => {
    if (step === "email") {
      if (!EMAIL.test(email)) return fail("Enter a valid suiss Account.")
      setError("")
      setStep("password")
      return
    }
    if (password.length < 4)
      return fail("Your suiss Account or password was incorrect.")
    setError("")
    onSubmit?.(email, password)
    setBusy(true)
  }

  if (signedIn) {
    return (
      <Screen>
        <View style={styles.center}>
          <AnimatedView
            entering={FadeInDown.duration(600).reduceMotion(
              ReduceMotion.System
            )}
            style={styles.done}
          >
            <Avatar size="xl" style={{ width: 80, height: 80 }}>
              <AvatarFallback
                style={{ backgroundColor: colors.surfaceSecondary }}
              >
                <Text style={{ ...fontSize["3xl"], color: colors.label }}>
                  {email[0]}
                </Text>
              </AvatarFallback>
            </Avatar>
            <Text
              role="heading"
              style={{ ...fontSize["3xl"], fontWeight: "600" }}
            >
              Hello.
            </Text>
            <Text style={{ ...fontSize.lg, color: colors.labelSecondary }}>
              {email}
            </Text>
            <LinkText
              style={fontSize.lg}
              onPress={() => {
                setSignedIn(false)
                setStep("email")
                setPassword("")
              }}
            >
              Sign out ›
            </LinkText>
          </AnimatedView>
        </View>
      </Screen>
    )
  }

  return (
    <Screen>
      <KeyboardScrollView contentContainerStyle={styles.scroll}>
        <View style={styles.form}>
          <Text role="heading" style={styles.title}>
            Sign in with your suiss Account
          </Text>
          <AnimatedView
            style={[
              styles.fields,
              error
                ? {
                    borderColor: colors.danger,
                    backgroundColor: withAlpha(
                      colors.danger,
                      isDark ? 0.1 : 0.05
                    ),
                  }
                : {
                    borderColor: colors.separatorStrong,
                    backgroundColor: colors.surface,
                  },
              shakeStyle,
            ]}
          >
            <View style={styles.row}>
              <Input
                value={email}
                onChangeText={(value) => {
                  setEmail(value)
                  setError("")
                  if (step === "password") setStep("email")
                }}
                placeholder="Email or phone number"
                accessibilityLabel="Email or phone number"
                autoComplete="username"
                textContentType="username"
                keyboardType="email-address"
                autoCapitalize="none"
                autoCorrect={false}
                returnKeyType="next"
                submitBehavior="submit"
                onSubmitEditing={submit}
                style={styles.input}
              />
              {step === "email" ? (
                <SubmitArrow ready={!!email} busy={busy} onPress={submit} />
              ) : null}
            </View>
            {step === "password" ? (
              <AnimatedView
                entering={FadeIn.duration(300).reduceMotion(
                  ReduceMotion.System
                )}
                style={[
                  styles.row,
                  {
                    borderTopWidth: 1,
                    borderTopColor: colors.separatorStrong,
                  },
                ]}
              >
                <Input
                  ref={passwordRef}
                  value={password}
                  onChangeText={(value) => {
                    setPassword(value)
                    setError("")
                  }}
                  placeholder="Password"
                  accessibilityLabel="Password"
                  autoComplete="current-password"
                  textContentType="password"
                  secureTextEntry
                  returnKeyType="go"
                  submitBehavior="submit"
                  onSubmitEditing={submit}
                  style={styles.input}
                />
                <SubmitArrow ready={!!password} busy={busy} onPress={submit} />
              </AnimatedView>
            ) : null}
          </AnimatedView>
          <Text
            accessibilityLiveRegion="polite"
            style={[styles.error, { color: colors.danger }]}
          >
            {error}
          </Text>
          <View style={styles.remember}>
            <Checkbox
              checked={remember}
              onCheckedChange={setRemember}
              accessibilityLabelledBy="login-account-remember"
            />
            <Label
              nativeID="login-account-remember"
              onPress={() => setRemember((current) => !current)}
              style={{ ...fontSize.sm, fontWeight: "400" }}
            >
              Remember me
            </Label>
          </View>
          <View style={styles.links}>
            <LinkText style={fontSize.sm} onPress={onForgotPassword}>
              Forgot password? ›
            </LinkText>
            <View style={styles.wrap}>
              <Text style={{ ...fontSize.sm, color: colors.labelSecondary }}>
                Don't have a suiss Account?
              </Text>
              <LinkText style={fontSize.sm} onPress={onCreateAccount}>
                Create yours now ›
              </LinkText>
            </View>
          </View>
        </View>
      </KeyboardScrollView>
    </Screen>
  )
}

export { LoginAccount }
```

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/LoginAccount.swift"
import PhosphorSwift
import SwiftUI

public struct LoginAccount: View {
  enum Step: Sendable {
    case email, password
  }

  enum FocusField: Hashable {
    case email, password
  }

  private var onForgotPassword: (() -> Void)?
  private var onCreateAccount: (() -> Void)?
  private var onSubmit: ((String, String) -> Void)?
  @State private var step: Step
  @State private var email: String
  @State private var password: String
  @State private var error: LocalizedStringKey?
  @State private var busy: Bool
  @State private var signedIn: Bool
  @State private var remember = true
  @State private var shakes = 0
  @FocusState private var focus: FocusField?
  @Environment(\.accessibilityReduceMotion) private var reduceMotion

  public init(
    onSubmit: ((String, String) -> Void)? = nil,
    onForgotPassword: (() -> Void)? = nil,
    onCreateAccount: (() -> Void)? = nil
  ) {
    self.init(step: .email)
    self.onSubmit = onSubmit
    self.onForgotPassword = onForgotPassword
    self.onCreateAccount = onCreateAccount
  }

  init(
    step: Step,
    email: String = "",
    password: String = "",
    error: LocalizedStringKey? = nil,
    busy: Bool = false,
    signedIn: Bool = false
  ) {
    _step = State(initialValue: step)
    _email = State(initialValue: email)
    _password = State(initialValue: password)
    _error = State(initialValue: error)
    _busy = State(initialValue: busy)
    _signedIn = State(initialValue: signedIn)
  }

  public var body: some View {
    Screen {
      if signedIn {
        welcome
          .transition(.opacity.combined(with: .offset(y: 18)))
      } else {
        form
      }
    }
    .animation(reduceMotion ? nil : .timingCurve(0.32, 0.72, 0, 1, duration: 0.45), value: step)
    .animation(reduceMotion ? nil : .timingCurve(0.32, 0.72, 0, 1, duration: 0.6), value: signedIn)
  }

  private var form: some View {
    KeyboardScrollView {
      VStack(spacing: 0) {
        Text("Sign in with your suiss Account")
          .scaledTextStyle(.xl2, weight: .bold)
          .multilineTextAlignment(.center)
          .fixedSize(horizontal: false, vertical: true)
          .padding(.bottom, 32)
        fields
          .shake(trigger: shakes)
        Text(error ?? "")
          .scaledTextStyle(.xs)
          .foregroundStyle(Color.danger)
          .frame(minHeight: 22)
          .padding(.top, 10)
          .accessibilityHidden(error == nil)
        Toggle(isOn: $remember) {
          Text("Remember me")
            .scaledFont(.sm)
            .foregroundStyle(Color.label)
        }
        .toggleStyle(.checkbox)
        .padding(.top, 6)
        VStack(spacing: 10) {
          Button("Forgot password? ›") { onForgotPassword?() }
            .buttonStyle(LoginAccountLinkStyle())
          ViewThatFits(in: .horizontal) {
            HStack(spacing: 4) { createAccount }
            VStack(spacing: 4) { createAccount }
          }
        }
        .padding(.top, 40)
      }
      .frame(maxWidth: .infinity)
      .padding(.horizontal, 24)
      .padding(.top, 72)
      .padding(.bottom, 24)
    }
  }

  @ViewBuilder private var createAccount: some View {
    Text("Don't have a suiss Account?")
      .scaledFont(.sm)
      .foregroundStyle(Color.labelSecondary)
    Button("Create yours now ›") { onCreateAccount?() }
      .buttonStyle(LoginAccountLinkStyle())
  }

  private var fields: some View {
    let shape = RoundedRectangle(cornerRadius: Radius.xl, style: .continuous)
    let invalid = error != nil
    return VStack(spacing: 0) {
      HStack(spacing: 0) {
        TextField("Email or phone number", text: $email)
          .textContentType(.username)
          .keyboardType(.emailAddress)
          .textInputAutocapitalization(.never)
          .autocorrectionDisabled()
          .submitLabel(.continue)
          .focused($focus, equals: .email)
          .onSubmit(submit)
          .onChange(of: email) {
            error = nil
            if step == .password { step = .email }
          }
          .modifier(LoginAccountFieldText())
        if step == .email {
          LoginAccountArrow(ready: !email.isEmpty, busy: busy, action: submit)
        }
      }
      if step == .password {
        Color.separatorStrong.frame(height: 1)
        HStack(spacing: 0) {
          SecureField("Password", text: $password)
            .textContentType(.password)
            .submitLabel(.go)
            .focused($focus, equals: .password)
            .onSubmit(submit)
            .onChange(of: password) { error = nil }
            .modifier(LoginAccountFieldText())
          LoginAccountArrow(ready: !password.isEmpty, busy: busy, action: submit)
        }
        .transition(.move(edge: .top).combined(with: .opacity))
      }
    }
    .background(invalid ? Color.dangerSurface : .surface, in: shape)
    .clipShape(shape)
    .overlay {
      shape.strokeBorder(invalid ? Color.danger : focus != nil ? .focus : .separatorStrong, lineWidth: 1)
    }
    .animation(.easeInOut(duration: 0.2), value: invalid)
  }

  private var welcome: some View {
    VStack(spacing: 14) {
      Avatar(size: .xl) {
        Text(verbatim: String(email.prefix(1)).uppercased())
          .scaledFont(.xl2, weight: .semibold)
          .foregroundStyle(Color.label)
          .frame(maxWidth: .infinity, maxHeight: .infinity)
          .background(Color.surfaceSecondary, in: Circle())
      }
      Text("Hello.")
        .scaledTextStyle(.xl3, weight: .bold)
      Text(verbatim: email)
        .scaledTextStyle(.lg)
        .foregroundStyle(Color.labelSecondary)
      Button("Sign out ›") {
        signedIn = false
        step = .email
        password = ""
      }
      .buttonStyle(LoginAccountLinkStyle(style: .lg))
    }
    .multilineTextAlignment(.center)
    .padding(24)
    .frame(maxWidth: .infinity, maxHeight: .infinity)
  }

  private func submit() {
    guard !busy else { return }
    if step == .email {
      guard email.wholeMatch(of: /.+@.+\..+/) != nil else {
        return fail("Enter a valid suiss Account.")
      }
      error = nil
      step = .password
      focus = .password
      return
    }
    guard password.count >= 4 else {
      return fail("Your suiss Account or password was incorrect.")
    }
    error = nil
    onSubmit?(email, password)
    busy = true
    focus = nil
    Task {
      try? await Task.sleep(for: .milliseconds(1200))
      busy = false
      signedIn = true
    }
  }

  private func fail(_ message: LocalizedStringKey) {
    error = message
    shakes += 1
  }
}

private struct LoginAccountFieldText: ViewModifier {
  func body(content: Content) -> some View {
    content
      .scaledFont(.lg)
      .foregroundStyle(Color.label)
      .tint(Color.accent)
      .padding(.horizontal, 16)
      .frame(maxWidth: .infinity, minHeight: 56, alignment: .leading)
  }
}

private struct LoginAccountArrow: View {
  let ready: Bool
  let busy: Bool
  let action: () -> Void

  var body: some View {
    Button(action: action) {
      Group {
        if busy {
          Spinner(.sm)
        } else {
          Ph.arrowRight.bold
            .frame(width: 14, height: 14)
            .flipsForRightToLeftLayoutDirection(true)
        }
      }
      .foregroundStyle(Color.labelSecondary)
      .frame(width: 30, height: 30)
      .overlay {
        Circle().strokeBorder(ready ? Color.labelSecondary : .labelQuaternary, lineWidth: 1.5)
      }
      .frame(width: 44, height: 44)
      .contentShape(Rectangle())
    }
    .buttonStyle(.plain)
    .disabled(!ready || busy)
    .opacity(ready || busy ? 1 : 0.6)
    .padding(.trailing, 6)
    .accessibilityLabel(Text("Continue"))
  }
}

private struct LoginAccountLinkStyle: ButtonStyle {
  var style: TextStyle = .sm

  func makeBody(configuration: Configuration) -> some View {
    configuration.label
      .scaledFont(style)
      .foregroundStyle(Color.link)
      .opacity(configuration.isPressed ? 0.5 : 1)
      .frame(minHeight: 32)
      .contentShape(Rectangle())
  }
}
```

```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/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/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/Keypad.swift"
import PhosphorSwift
import SwiftUI

public enum KeypadKey: Hashable, Sendable {
  case digit(Int)
  case decimal
  case delete
  case biometric
}

public enum KeypadAccessory {
  case none
  case decimal(String, label: LocalizedStringKey = "Decimal separator")
  case biometric(Image, label: LocalizedStringKey = "Use biometrics")
}

public struct Keypad: View {
  let accessory: KeypadAccessory
  let deleteLabel: LocalizedStringKey
  let canDelete: Bool
  let press: (KeypadKey) -> Bool

  public init(
    accessory: KeypadAccessory = .none,
    deleteLabel: LocalizedStringKey = "Delete",
    deleteDisabled: Bool = false,
    onKeyPress: @escaping (KeypadKey) -> Void
  ) {
    self.accessory = accessory
    self.deleteLabel = deleteLabel
    canDelete = !deleteDisabled
    press = { key in
      onKeyPress(key)
      return true
    }
  }

  init(
    accessory: KeypadAccessory,
    deleteLabel: LocalizedStringKey,
    canDelete: Bool,
    press: @escaping (KeypadKey) -> Bool
  ) {
    self.accessory = accessory
    self.deleteLabel = deleteLabel
    self.canDelete = canDelete
    self.press = press
  }

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

  public var body: some View {
    let size = min(max(72 * scale, 64), 80)
    VStack(spacing: 16) {
      ForEach(0..<3) { row in
        HStack(spacing: 24) {
          ForEach(1..<4) { column in
            digit(row * 3 + column, size: size)
          }
        }
      }
      HStack(spacing: 24) {
        accessoryKey(size: size)
        digit(0, size: size)
        key(.delete, size: size, filled: false) {
          Ph.backspace.regular
            .resizable()
            .frame(width: 28, height: 28)
        }
        .disabled(!canDelete)
        .accessibilityLabel(Text(deleteLabel))
      }
    }
    .accessibilityElement(children: .contain)
  }

  private func digit(_ value: Int, size: CGFloat) -> some View {
    key(.digit(value), size: size, filled: true) {
      Text(verbatim: "\(value)")
        .scaledFont(.xl2)
        .monospacedDigit()
    }
    .accessibilityLabel(Text(verbatim: "\(value)"))
  }

  @ViewBuilder
  private func accessoryKey(size: CGFloat) -> some View {
    switch accessory {
    case .none:
      Color.clear.frame(width: size, height: size)
        .accessibilityHidden(true)
    case .decimal(let separator, let label):
      key(.decimal, size: size, filled: false) {
        Text(verbatim: separator)
          .scaledFont(.xl2)
      }
      .accessibilityLabel(Text(label))
    case .biometric(let icon, let label):
      key(.biometric, size: size, filled: false) {
        icon
          .resizable()
          .frame(width: 28, height: 28)
      }
      .accessibilityLabel(Text(label))
    }
  }

  private func key<Label: View>(
    _ key: KeypadKey,
    size: CGFloat,
    filled: Bool,
    @ViewBuilder label: @escaping () -> Label
  ) -> some View {
    HapticButton(style: PressReader { pressed in
      KeypadFace(pressed: pressed, filled: filled, size: size, label: label)
    }) {
      press(key)
    }
  }
}

private struct KeypadFace<Label: View>: View {
  let pressed: Bool
  let filled: Bool
  let size: CGFloat
  let label: () -> Label

  @Environment(\.isEnabled) private var isEnabled

  var body: some View {
    label()
      .foregroundStyle(isEnabled ? Color.label : .labelQuaternary)
      .frame(width: size, height: size)
      .background(fill, in: Circle())
      .contentShape(Circle())
      .animation(.easeOut(duration: 0.12), value: pressed)
  }

  private var fill: Color {
    if pressed { return .controlPressed }
    if !filled { return .clear }
    return isEnabled ? .control : .controlDisabled
  }
}

private struct ShakeModifier: ViewModifier {
  let trigger: Int

  @Environment(\.accessibilityReduceMotion) private var reduceMotion

  func body(content: Content) -> some View {
    let still = reduceMotion
    content.keyframeAnimator(initialValue: CGFloat(0), trigger: trigger) { view, offset in
      view.offset(x: still ? 0 : offset)
    } keyframes: { _ in
      KeyframeTrack {
        LinearKeyframe(-8, duration: 0.08)
        LinearKeyframe(7, duration: 0.08)
        LinearKeyframe(-5, duration: 0.08)
        LinearKeyframe(3, duration: 0.08)
        LinearKeyframe(0, duration: 0.08, timingCurve: .easeOut)
      }
    }
  }
}

extension View {
  func shake(trigger: Int) -> some View {
    modifier(ShakeModifier(trigger: trigger))
  }
}
```

```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/Spinner.swift"
import SwiftUI

public struct Spinner: View {
  public enum Size: CaseIterable, Sendable {
    case sm, `default`, lg, xl

    public var value: CGFloat {
      switch self {
      case .sm: 12
      case .default: 16
      case .lg: 24
      case .xl: 32
      }
    }
  }

  let dimension: CGFloat
  let label: Text

  public init(_ size: Size = .default, label: LocalizedStringKey = "Loading") {
    dimension = size.value
    self.label = Text(label)
  }

  public init(dimension: CGFloat, label: LocalizedStringKey = "Loading") {
    self.dimension = dimension
    self.label = Text(label)
  }

  public var body: some View {
    TimelineView(.periodic(from: .now, by: 0.1)) { context in
      let step = Int((context.date.timeIntervalSinceReferenceDate * 10).rounded(.down)) % 8
      SpinnerSpokes(dimension: dimension, progress: nil)
        .rotationEffect(.degrees(Double(step) * 45))
    }
    .frame(width: dimension, height: dimension)
    .accessibilityElement()
    .accessibilityLabel(label)
    .accessibilityAddTraits(.updatesFrequently)
  }
}

struct SpinnerSpokes: View {
  let dimension: CGFloat
  let progress: Double?

  var body: some View {
    let unit = dimension / 24
    ZStack {
      ForEach(0..<8, id: \.self) { index in
        Capsule()
          .fill(.foreground)
          .frame(width: 3.12 * unit, height: 7.2 * unit)
          .offset(y: -7.9 * unit)
          .rotationEffect(.degrees(Double(index) * 45))
          .opacity(opacity(index))
      }
    }
    .frame(width: dimension, height: dimension)
  }

  private func opacity(_ index: Int) -> Double {
    guard let progress else { return 0.2 + 0.8 * Double(index) / 7 }
    return min(max(progress * 8 - Double(index), 0), 1)
  }
}
```

```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/LoginAccount.kt"
package com.esuiss.ui.blocks

import androidx.compose.animation.AnimatedVisibility
import androidx.compose.animation.core.Animatable
import androidx.compose.animation.core.CubicBezierEasing
import androidx.compose.animation.core.keyframes
import androidx.compose.animation.core.tween
import androidx.compose.animation.expandVertically
import androidx.compose.animation.shrinkVertically
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.Box
import androidx.compose.foundation.layout.BoxWithConstraints
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.Spacer
import androidx.compose.foundation.layout.fillMaxSize
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.layout.widthIn
import androidx.compose.foundation.selection.toggleable
import androidx.compose.foundation.shape.CircleShape
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.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
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.draw.clip
import androidx.compose.ui.focus.FocusRequester
import androidx.compose.ui.focus.focusRequester
import androidx.compose.ui.graphics.SolidColor
import androidx.compose.ui.graphics.graphicsLayer
import androidx.compose.ui.semantics.LiveRegionMode
import androidx.compose.ui.semantics.Role
import androidx.compose.ui.semantics.contentDescription
import androidx.compose.ui.semantics.error
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.text.input.ImeAction
import androidx.compose.ui.text.input.KeyboardType
import androidx.compose.ui.text.input.PasswordVisualTransformation
import androidx.compose.ui.text.input.VisualTransformation
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.ArrowRight
import com.esuiss.ui.components.Avatar
import com.esuiss.ui.components.AvatarSize
import com.esuiss.ui.components.Checkbox
import com.esuiss.ui.components.Icon
import com.esuiss.ui.components.KeyboardScrollView
import com.esuiss.ui.components.Screen
import com.esuiss.ui.components.Spinner
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.Radius
import com.esuiss.ui.theme.Typography
import kotlinx.coroutines.delay
import kotlinx.coroutines.launch

private val EmailPattern = Regex(".+@.+\\..+")

private val RevealEasing = CubicBezierEasing(0.32f, 0.72f, 0f, 1f)

private enum class LoginStep { Email, Password }

@Composable
fun LoginAccount(
    modifier: Modifier = Modifier,
    onSubmit: (email: String, password: String) -> Unit = { _, _ -> },
    onForgotPassword: () -> Unit = {},
    onCreateAccount: () -> Unit = {},
) {
    var step by rememberSaveable { mutableStateOf(LoginStep.Email) }
    var email by rememberSaveable { mutableStateOf("") }
    var password by remember { mutableStateOf("") }
    var error by remember { mutableStateOf("") }
    var busy by remember { mutableStateOf(false) }
    var signedIn by rememberSaveable { mutableStateOf(false) }
    var rememberMe by rememberSaveable { mutableStateOf(true) }
    val shake = remember { Animatable(0f) }
    val scope = rememberCoroutineScope()
    val passwordFocus = remember { FocusRequester() }

    fun fail(message: String) {
        error = message
        scope.launch {
            shake.animateTo(
                0f,
                keyframes {
                    durationMillis = 420
                    0f at 0
                    -10f at 84
                    9f at 168
                    -6f at 252
                    4f at 336
                },
            )
        }
    }

    fun submit() {
        if (busy) return
        if (step == LoginStep.Email) {
            if (!EmailPattern.matches(email)) return fail("Enter a valid suiss Account.")
            error = ""
            step = LoginStep.Password
            return
        }
        if (password.length < 4) return fail("Your suiss Account or password was incorrect.")
        error = ""
        onSubmit(email, password)
        busy = true
    }

    LaunchedEffect(busy) {
        if (!busy) return@LaunchedEffect
        delay(1200)
        busy = false
        signedIn = true
    }

    LaunchedEffect(step) {
        if (step != LoginStep.Password) return@LaunchedEffect
        delay(380)
        runCatching { passwordFocus.requestFocus() }
    }

    Screen(modifier) {
        if (signedIn) {
            Greeting(email) {
                signedIn = false
                step = LoginStep.Email
                password = ""
            }
            return@Screen
        }
        CenteredScroll {
            BasicText(
                "Sign in with your suiss Account",
                modifier = Modifier.semantics { heading() },
                style = Typography.xl3.copy(
                    color = EsuissTheme.colors.label,
                    fontWeight = FontWeight.SemiBold,
                    textAlign = TextAlign.Center,
                ),
            )
            Spacer(Modifier.height(32.dp))
            FieldStack(
                invalid = error.isNotEmpty(),
                modifier = Modifier.graphicsLayer { translationX = shake.value.dp.toPx() },
            ) {
                Row(verticalAlignment = Alignment.CenterVertically) {
                    StackInput(
                        value = email,
                        onValueChange = {
                            email = it
                            error = ""
                            if (step == LoginStep.Password) step = LoginStep.Email
                        },
                        placeholder = "Email or phone number",
                        invalid = step == LoginStep.Email && error.isNotEmpty(),
                        keyboardType = KeyboardType.Email,
                        imeAction = ImeAction.Next,
                        onAction = ::submit,
                        modifier = Modifier.weight(1f),
                    )
                    if (step == LoginStep.Email) {
                        SubmitArrow(ready = email.isNotEmpty(), busy = busy, onClick = ::submit)
                    }
                }
                AnimatedVisibility(
                    visible = step == LoginStep.Password,
                    enter = expandVertically(tween(450, easing = RevealEasing)),
                    exit = shrinkVertically(tween(450, easing = RevealEasing)),
                ) {
                    Column {
                        Box(
                            Modifier
                                .fillMaxWidth()
                                .height(1.dp)
                                .background(EsuissTheme.colors.separatorStrong),
                        )
                        Row(verticalAlignment = Alignment.CenterVertically) {
                            StackInput(
                                value = password,
                                onValueChange = {
                                    password = it
                                    error = ""
                                },
                                placeholder = "Password",
                                invalid = step == LoginStep.Password && error.isNotEmpty(),
                                keyboardType = KeyboardType.Password,
                                imeAction = ImeAction.Go,
                                onAction = ::submit,
                                password = true,
                                modifier = Modifier
                                    .weight(1f)
                                    .focusRequester(passwordFocus),
                            )
                            SubmitArrow(ready = password.isNotEmpty(), busy = busy, onClick = ::submit)
                        }
                    }
                }
            }
            BasicText(
                error,
                modifier = Modifier
                    .padding(top = 10.dp)
                    .heightIn(min = 22.dp)
                    .semantics { liveRegion = LiveRegionMode.Polite },
                style = Typography.sm.copy(color = EsuissTheme.colors.danger, textAlign = TextAlign.Center),
            )
            RememberMe(rememberMe) { rememberMe = it }
            Spacer(Modifier.height(40.dp))
            Column(
                horizontalAlignment = Alignment.CenterHorizontally,
                verticalArrangement = Arrangement.spacedBy(10.dp),
            ) {
                LinkText("Forgot password? ›", onForgotPassword)
                BasicText(
                    "Don't have a suiss Account?",
                    style = Typography.sm.copy(color = EsuissTheme.colors.labelSecondary, textAlign = TextAlign.Center),
                )
                LinkText("Create yours now ›", onCreateAccount)
            }
        }
    }
}

@Composable
private fun CenteredScroll(content: @Composable ColumnScope.() -> Unit) {
    BoxWithConstraints(Modifier.fillMaxSize()) {
        val height = maxHeight
        KeyboardScrollView(modifier = Modifier.fillMaxSize()) {
            Column(
                modifier = Modifier
                    .fillMaxWidth()
                    .heightIn(min = height)
                    .padding(PaddingValues(24.dp)),
                verticalArrangement = Arrangement.Center,
                horizontalAlignment = Alignment.CenterHorizontally,
            ) {
                Column(
                    modifier = Modifier.widthIn(max = 460.dp),
                    horizontalAlignment = Alignment.CenterHorizontally,
                    content = content,
                )
            }
        }
    }
}

@Composable
private fun FieldStack(
    invalid: Boolean,
    modifier: Modifier = Modifier,
    content: @Composable ColumnScope.() -> Unit,
) {
    val colors = EsuissTheme.colors
    val shape = RoundedCornerShape(Radius.xl)
    val fill = if (invalid) colors.danger.copy(alpha = if (colors.isDark) 0.1f else 0.05f) else colors.surface
    Column(
        modifier = modifier
            .fillMaxWidth()
            .clip(shape)
            .background(fill, shape)
            .border(1.dp, if (invalid) colors.danger else colors.separatorStrong, shape),
        content = content,
    )
}

@Composable
private fun StackInput(
    value: String,
    onValueChange: (String) -> Unit,
    placeholder: String,
    invalid: Boolean,
    keyboardType: KeyboardType,
    imeAction: ImeAction,
    onAction: () -> Unit,
    modifier: Modifier = Modifier,
    password: Boolean = false,
) {
    val colors = EsuissTheme.colors
    val style = Typography.lg.copy(color = colors.label)
    BasicTextField(
        value = value,
        onValueChange = onValueChange,
        modifier = modifier
            .height(56.dp)
            .semantics {
                contentDescription = placeholder
                if (invalid) error("Invalid")
            },
        textStyle = style,
        singleLine = true,
        cursorBrush = SolidColor(colors.accent),
        visualTransformation = if (password) PasswordVisualTransformation() else VisualTransformation.None,
        keyboardOptions = KeyboardOptions(keyboardType = keyboardType, imeAction = imeAction),
        keyboardActions = KeyboardActions(onNext = { onAction() }, onGo = { onAction() }),
        decorationBox = { inner ->
            Box(Modifier.padding(horizontal = 16.dp), contentAlignment = Alignment.CenterStart) {
                if (value.isEmpty()) {
                    BasicText(placeholder, style = style.copy(color = colors.labelSecondary), maxLines = 1)
                }
                inner()
            }
        },
    )
}

@Composable
private fun SubmitArrow(ready: Boolean, busy: Boolean, onClick: () -> Unit) {
    val colors = EsuissTheme.colors
    val enabled = ready && !busy
    val interaction = remember { MutableInteractionSource() }
    val pressed by interaction.collectIsPressedAsState()
    Box(
        modifier = Modifier
            .padding(end = 10.dp)
            .size(30.dp)
            .graphicsLayer { alpha = if (pressed) 0.6f else 1f }
            .border(1.5.dp, if (enabled || busy) colors.labelSecondary else colors.labelQuaternary, CircleShape)
            .clickable(
                interactionSource = interaction,
                indication = null,
                enabled = enabled,
                role = Role.Button,
                onClick = onClick,
            )
            .semantics { contentDescription = "Continue" },
        contentAlignment = Alignment.Center,
    ) {
        if (busy) {
            Spinner(size = 14.dp, color = colors.labelSecondary)
        } else {
            Icon(
                PhosphorIcons.Bold.ArrowRight,
                contentDescription = null,
                size = 14.dp,
                tint = if (enabled) colors.labelSecondary else colors.labelQuaternary,
            )
        }
    }
}

@Composable
private fun RememberMe(checked: Boolean, onCheckedChange: (Boolean) -> Unit) {
    Row(
        modifier = Modifier
            .padding(top = 6.dp)
            .heightIn(min = 44.dp)
            .toggleable(
                value = checked,
                interactionSource = remember { MutableInteractionSource() },
                indication = null,
                role = Role.Checkbox,
                onValueChange = onCheckedChange,
            ),
        horizontalArrangement = Arrangement.spacedBy(8.dp),
        verticalAlignment = Alignment.CenterVertically,
    ) {
        Checkbox(checked = checked, onCheckedChange = null)
        BasicText("Remember me", style = Typography.sm.copy(color = EsuissTheme.colors.label))
    }
}

@Composable
private fun LinkText(text: String, onClick: () -> Unit, modifier: Modifier = Modifier) {
    val interaction = remember { MutableInteractionSource() }
    val pressed by interaction.collectIsPressedAsState()
    BasicText(
        text,
        modifier = modifier
            .graphicsLayer { alpha = if (pressed) 0.5f else 1f }
            .clickable(interactionSource = interaction, indication = null, role = Role.Button, onClick = onClick)
            .padding(vertical = 4.dp),
        style = Typography.sm.copy(color = EsuissTheme.colors.link, textAlign = TextAlign.Center),
    )
}

@Composable
private fun Greeting(email: String, onSignOut: () -> Unit) {
    val colors = EsuissTheme.colors
    val appear = remember { Animatable(0f) }
    LaunchedEffect(Unit) { appear.animateTo(1f, tween(1000, easing = RevealEasing)) }
    Column(
        modifier = Modifier
            .fillMaxSize()
            .padding(24.dp)
            .graphicsLayer {
                alpha = appear.value
                translationY = (1f - appear.value) * 18.dp.toPx()
            },
        verticalArrangement = Arrangement.spacedBy(14.dp, Alignment.CenterVertically),
        horizontalAlignment = Alignment.CenterHorizontally,
    ) {
        Avatar(
            modifier = Modifier.size(80.dp),
            size = AvatarSize.Xl,
            fallback = {
                Box(
                    Modifier
                        .fillMaxSize()
                        .background(colors.surfaceSecondary, CircleShape),
                    contentAlignment = Alignment.Center,
                ) {
                    BasicText(
                        email.take(1),
                        style = Typography.xl3.copy(color = colors.label),
                    )
                }
            },
        )
        BasicText(
            "Hello.",
            modifier = Modifier.semantics { heading() },
            style = Typography.xl3.copy(color = colors.label, fontWeight = FontWeight.SemiBold),
        )
        BasicText(email, style = Typography.lg.copy(color = colors.labelSecondary, textAlign = TextAlign.Center))
        LinkText("Sign out ›", onSignOut)
    }
}
```

```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/Checkbox.kt"
package com.esuiss.ui.components

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.size
import androidx.compose.foundation.selection.triStateToggleable
import androidx.compose.foundation.shape.RoundedCornerShape
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.state.ToggleableState
import androidx.compose.ui.unit.dp
import com.adamglin.PhosphorIcons
import com.adamglin.phosphoricons.Regular
import com.adamglin.phosphoricons.regular.Check
import com.adamglin.phosphoricons.regular.Minus
import com.esuiss.ui.theme.Colors
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.shadow

@Composable
fun Checkbox(
    checked: Boolean,
    onCheckedChange: ((Boolean) -> Unit)?,
    modifier: Modifier = Modifier,
    enabled: Boolean = LocalFieldState.current.enabled,
    invalid: Boolean = LocalFieldState.current.invalid,
    interactionSource: MutableInteractionSource? = null,
) {
    TriStateCheckbox(
        state = ToggleableState(checked),
        onClick = onCheckedChange?.let { { it(!checked) } },
        modifier = modifier,
        enabled = enabled,
        invalid = invalid,
        interactionSource = interactionSource,
    )
}

@Composable
fun TriStateCheckbox(
    state: ToggleableState,
    onClick: (() -> Unit)?,
    modifier: Modifier = Modifier,
    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 on = state != ToggleableState.Off
    val shape = RoundedCornerShape(4.dp)
    val look = selectionControlLook(colors, on, enabled, invalid, pressed)
    val toggle = if (onClick != null) {
        Modifier
            .triStateToggleable(
                state = state,
                interactionSource = source,
                indication = null,
                enabled = enabled,
                role = Role.Checkbox,
                onClick = {
                    haptics.toggle(state != ToggleableState.On)
                    onClick()
                },
            )
            .formTouchTarget()
    } else {
        Modifier
    }
    Box(
        modifier = modifier
            .then(toggle)
            .then(if (invalid) Modifier.semantics { error("Invalid") } else Modifier)
            .size(16.dp)
            .then(if (look.shadow) Modifier.shadow(FormShadowXs, shape) else Modifier)
            .background(look.background, shape)
            .border(1.dp, look.border, shape),
        contentAlignment = Alignment.Center,
    ) {
        if (on) {
            Icon(
                if (state == ToggleableState.Indeterminate) PhosphorIcons.Regular.Minus else PhosphorIcons.Regular.Check,
                contentDescription = null,
                size = 14.dp,
                tint = colors.onAccent,
            )
        }
    }
}

internal class SelectionControlLook(val background: Color, val border: Color, val shadow: Boolean)

internal fun selectionControlLook(
    colors: Colors,
    on: Boolean,
    enabled: Boolean,
    invalid: Boolean,
    pressed: Boolean,
): SelectionControlLook = when {
    on && !enabled -> SelectionControlLook(colors.accentDisabled, Color.Transparent, false)
    on -> {
        val color = if (pressed) colors.accentPressed else colors.accent
        SelectionControlLook(color, color, false)
    }
    !enabled -> SelectionControlLook(
        colors.controlDisabled,
        if (colors.isDark) Color.Transparent else colors.label.copy(alpha = 0.1f),
        false,
    )
    colors.isDark -> SelectionControlLook(
        colors.labelQuaternary,
        if (invalid) colors.danger else Color.Transparent,
        false,
    )
    else -> SelectionControlLook(
        if (pressed) colors.control else colors.surface,
        if (invalid) colors.danger else colors.label.copy(alpha = 0.25f),
        true,
    )
}
```

```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/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/KeyboardScrollView.kt"
package com.esuiss.ui.components

import androidx.compose.foundation.ScrollState
import androidx.compose.foundation.gestures.detectTapGestures
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.PaddingValues
import androidx.compose.foundation.layout.WindowInsets
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.ime
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.rememberScrollState
import androidx.compose.foundation.verticalScroll
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableFloatStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.ui.Modifier
import androidx.compose.ui.input.pointer.pointerInput
import androidx.compose.ui.layout.boundsInWindow
import androidx.compose.ui.layout.onGloballyPositioned
import androidx.compose.ui.platform.LocalDensity
import androidx.compose.ui.platform.LocalFocusManager
import androidx.compose.ui.platform.LocalView
import androidx.compose.ui.unit.dp

@Composable
fun KeyboardScrollView(
    modifier: Modifier = Modifier,
    state: ScrollState = rememberScrollState(),
    contentPadding: PaddingValues = PaddingValues(0.dp),
    verticalArrangement: Arrangement.Vertical = Arrangement.Top,
    content: @Composable ColumnScope.() -> Unit,
) {
    val density = LocalDensity.current
    val view = LocalView.current
    val focus = LocalFocusManager.current
    val ime = WindowInsets.ime.getBottom(density)
    val keyboard = if (ime > 0) ime + (LocalKeyboardAccessory.current?.height ?: 0) else 0
    var bottom by remember { mutableFloatStateOf(0f) }
    val windowHeight = view.rootView.height
    val overlap = if (keyboard > 0 && windowHeight > 0) {
        (bottom - (windowHeight - keyboard)).coerceAtLeast(0f)
    } else {
        0f
    }
    Box(
        modifier = modifier.onGloballyPositioned { bottom = it.boundsInWindow().bottom },
    ) {
        Column(
            modifier = Modifier
                .fillMaxSize()
                .padding(bottom = with(density) { overlap.toDp() })
                .pointerInput(focus) { detectTapGestures { focus.clearFocus() } }
                .verticalScroll(state)
                .padding(contentPadding),
            verticalArrangement = verticalArrangement,
            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/Spinner.kt"
package com.esuiss.ui.components

import androidx.compose.animation.core.LinearEasing
import androidx.compose.animation.core.RepeatMode
import androidx.compose.animation.core.animateFloat
import androidx.compose.animation.core.infiniteRepeatable
import androidx.compose.animation.core.rememberInfiniteTransition
import androidx.compose.animation.core.tween
import androidx.compose.foundation.Canvas
import androidx.compose.foundation.layout.size
import androidx.compose.runtime.Composable
import androidx.compose.runtime.State
import androidx.compose.runtime.remember
import androidx.compose.runtime.mutableFloatStateOf
import androidx.compose.ui.Modifier
import androidx.compose.ui.geometry.CornerRadius
import androidx.compose.ui.geometry.Offset
import androidx.compose.ui.geometry.Size
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.drawscope.DrawScope
import androidx.compose.ui.graphics.drawscope.rotate
import androidx.compose.ui.graphics.takeOrElse
import androidx.compose.ui.semantics.LiveRegionMode
import androidx.compose.ui.semantics.ProgressBarRangeInfo
import androidx.compose.ui.semantics.contentDescription
import androidx.compose.ui.semantics.liveRegion
import androidx.compose.ui.semantics.progressBarRangeInfo
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 kotlin.math.floor

internal const val SpinnerSpokes = 8

internal fun spinnerSpokeOpacity(index: Int): Float = 0.2f + 0.8f * index / (SpinnerSpokes - 1)

internal fun DrawScope.drawSpinnerSpokes(color: Color, rotation: Float = 0f, opacity: (Int) -> Float) {
    val unit = size.minDimension / 24f
    val center = Offset(size.width / 2f, size.height / 2f)
    rotate(rotation, center) {
        for (index in 0 until SpinnerSpokes) {
            val alpha = opacity(index).coerceIn(0f, 1f)
            if (alpha <= 0f) continue
            rotate(index * 360f / SpinnerSpokes, center) {
                drawRoundRect(
                    color = color,
                    topLeft = Offset(center.x - 1.56f * unit, center.y - 11.5f * unit),
                    size = Size(3.12f * unit, 7.2f * unit),
                    cornerRadius = CornerRadius(1.56f * unit),
                    alpha = alpha * color.alpha,
                )
            }
        }
    }
}

@Composable
fun Spinner(
    modifier: Modifier = Modifier,
    size: Dp = 16.dp,
    color: Color = Color.Unspecified,
    contentDescription: String = "Loading",
) {
    val tint = color.takeOrElse { LocalContentColor.current.takeOrElse { EsuissTheme.colors.label } }
    val reduced = formReducedMotion()
    val step: State<Float> = if (reduced) {
        remember { mutableFloatStateOf(0f) }
    } else {
        rememberInfiniteTransition(label = "spinner").animateFloat(
            initialValue = 0f,
            targetValue = SpinnerSpokes.toFloat(),
            animationSpec = infiniteRepeatable(tween(800, easing = LinearEasing), RepeatMode.Restart),
            label = "step",
        )
    }
    Canvas(
        modifier = modifier
            .size(size)
            .semantics {
                this.contentDescription = contentDescription
                progressBarRangeInfo = ProgressBarRangeInfo.Indeterminate
                liveRegion = LiveRegionMode.Polite
            },
    ) {
        val rotation = (floor(step.value) % SpinnerSpokes) * 360f / SpinnerSpokes
        drawSpinnerSpokes(tint, rotation) { spinnerSpokeOpacity(it) }
    }
}
```

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

## Usage

```tsx
import { LoginAccount } from "@/components/blocks/login-account"
```

```tsx
<LoginAccount />
```

Wire `onSubmit` (receives the email and password) to your auth service, and `onForgotPassword` and `onCreateAccount` to your navigation. The sign-in delay and the success view are simulated in the component.