# Pin Pad

A passcode entry screen element with a row of dots and a numeric keypad.

Pin Pad is an open-source mobile component 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/components/pin-pad

![Preview](https://uim.suiss.app/previews/components-pin-pad--default.light.webp)

```tsx
import { PinPad } from "@/components/ui/pin-pad"

export function PinPadExample() {
  return (
    <PinPad />
  )
}
```

```swift
import EsuissUI
import SwiftUI

struct PinPadDemo: View {
  let length: Int
  let error: Bool
  let biometric: Bool

  @State private var value: String

  init(value: String = "", length: Int = 6, error: Bool = false, biometric: Bool = false) {
    self.length = length
    self.error = error
    self.biometric = biometric
    _value = State(initialValue: value)
  }

  var body: some View {
    PinPad(value: $value, length: length, error: error, onBiometric: biometric ? {} : nil)
      .frame(maxWidth: .infinity)
  }
}
```

```kotlin
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp
import com.esuiss.ui.components.PinPad

@Composable
fun PinPadExample() {
    PinPadCentered { PinPad() }
}

@Composable
fun PinPadCentered(content: @Composable () -> Unit) {
    Column(
        modifier = Modifier.fillMaxWidth(),
        horizontalAlignment = Alignment.CenterHorizontally,
        verticalArrangement = Arrangement.spacedBy(24.dp),
    ) {
        content()
    }
}
```

`PinPad` combines a row of dots that fill as digits are entered with a `Keypad` for input. The length is between 4 and 8 digits. Each key press plays a selection haptic, and switching to the error state turns the dots red, plays an error haptic and shakes the row with Reanimated.

An optional biometric key appears in the bottom-left corner of the keypad when `onBiometric` is set, and the delete key is disabled while nothing is entered.

## Installation

```bash title="Terminal"
npx @esuiss/uim@latest add pin-pad
```

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

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

The CLI also adds what it builds on: [Keypad](/docs/components/keypad).

### 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: [Keypad](/docs/components/keypad), and the primitives `components/primitives/haptics.tsx`, `components/primitives/hooks.tsx`.

3. Copy the source into `components/ui/pin-pad.tsx`:

```tsx title="uniwind/components/ui/pin-pad.tsx"
import { cn } from "cn"
import type { Icon as PhosphorIcon } from "phosphor-react-native"
import * as React from "react"
import { View } from "react-native"
import {
  ReduceMotion,
  useAnimatedStyle,
  useSharedValue,
  withSequence,
  withTiming,
} from "react-native-reanimated"
import { useHaptics } from "@/components/primitives/haptics"
import { useEffectEvent } from "@/components/primitives/hooks"
import { AnimatedView } from "@/components/ui/animated-view"
import { Keypad, type KeypadKeyValue } from "@/components/ui/keypad"

const SHAKE_DURATION = 400

function clampLength(length: number) {
  return Math.min(8, Math.max(4, Math.round(length)))
}

function defaultDotsLabel(entered: number, length: number) {
  return `${entered} of ${length} entered`
}

function PinPad({
  length: lengthProp = 6,
  value: valueProp,
  defaultValue = "",
  onValueChange,
  onComplete,
  error = false,
  disabled = false,
  onBiometric,
  biometricIcon,
  biometricLabel,
  deleteLabel,
  dotsLabel = defaultDotsLabel,
  className,
  dotsClassName,
  keypadClassName,
  ...props
}: React.ComponentProps<typeof View> & {
  length?: number
  value?: string
  defaultValue?: string
  onValueChange?: (value: string) => void
  onComplete?: (value: string) => void
  error?: boolean
  disabled?: boolean
  onBiometric?: () => void
  biometricIcon?: PhosphorIcon
  biometricLabel?: string
  deleteLabel?: string
  dotsLabel?: (entered: number, length: number) => string
  dotsClassName?: string
  keypadClassName?: string
}) {
  const length = clampLength(lengthProp)
  const haptics = useHaptics()
  const [uncontrolled, setUncontrolled] = React.useState(() =>
    defaultValue.replace(/\D/g, "").slice(0, length)
  )
  const isControlled = valueProp !== undefined
  const value = (isControlled ? valueProp : uncontrolled).slice(0, length)
  const valueRef = React.useRef(value)
  valueRef.current = value
  const offset = useSharedValue(0)
  const wasError = React.useRef(error)

  const commit = React.useCallback(
    (next: string) => {
      if (next === valueRef.current) return false
      valueRef.current = next
      if (!isControlled) setUncontrolled(next)
      onValueChange?.(next)
      return true
    },
    [isControlled, onValueChange]
  )

  const onError = useEffectEvent(() => {
    haptics.notification("error")
    const step = {
      duration: SHAKE_DURATION / 6,
      reduceMotion: ReduceMotion.System,
    }
    offset.value = withSequence(
      withTiming(-12, step),
      withTiming(10, step),
      withTiming(-8, step),
      withTiming(6, step),
      withTiming(-3, step),
      withTiming(0, step)
    )
  })

  React.useEffect(() => {
    const previous = wasError.current
    wasError.current = error
    if (!error || previous) return
    onError()
  }, [error, onError])

  const shakeStyle = useAnimatedStyle(() => ({
    transform: [{ translateX: offset.value }],
  }))

  const press = (key: KeypadKeyValue) => {
    if (key === "biometric") {
      onBiometric?.()
      return
    }
    const current = valueRef.current
    if (key === "delete") {
      if (commit(current.slice(0, -1))) haptics.selection()
      return
    }
    if (key === "decimal" || current.length >= length) return
    const next = current + key
    if (!commit(next)) return
    haptics.selection()
    if (next.length === length) onComplete?.(next)
  }

  return (
    <View className={cn("items-center gap-10", className)} {...props}>
      <AnimatedView
        accessible
        accessibilityLabel={dotsLabel(value.length, length)}
        accessibilityLiveRegion="polite"
        className={cn("flex-row items-center gap-4", dotsClassName)}
        style={shakeStyle}
      >
        {Array.from({ length }, (_, position) => position).map((index) => {
          const filled = index < value.length
          return (
            <View
              key={index}
              className={cn(
                "size-3.5 rounded-full border-[1.5px]",
                error
                  ? filled
                    ? "border-danger bg-danger"
                    : "border-danger"
                  : filled
                    ? disabled
                      ? "border-label-quaternary bg-label-quaternary"
                      : "border-label bg-label"
                    : disabled
                      ? "border-label-quaternary"
                      : "border-separator-strong"
              )}
            />
          )
        })}
      </AnimatedView>
      <Keypad
        accessoryKey={onBiometric ? "biometric" : undefined}
        biometricIcon={biometricIcon}
        biometricLabel={biometricLabel}
        deleteLabel={deleteLabel}
        disabled={disabled}
        deleteDisabled={value.length === 0}
        onKeyPress={press}
        className={keypadClassName}
      />
    </View>
  )
}

export { PinPad }
```

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: [Keypad](/docs/components/keypad), and the primitives `components/primitives/haptics.tsx`, `components/primitives/hooks.tsx`.

3. Copy the source into `components/ui/pin-pad.tsx`:

```tsx title="nativewind/components/ui/pin-pad.tsx"
import { cn } from "cn"
import type { Icon as PhosphorIcon } from "phosphor-react-native"
import * as React from "react"
import { View } from "react-native"
import {
  ReduceMotion,
  useAnimatedStyle,
  useSharedValue,
  withSequence,
  withTiming,
} from "react-native-reanimated"
import { useHaptics } from "@/components/primitives/haptics"
import { useEffectEvent } from "@/components/primitives/hooks"
import { AnimatedView } from "@/components/ui/animated-view"
import { Keypad, type KeypadKeyValue } from "@/components/ui/keypad"

const SHAKE_DURATION = 400

function clampLength(length: number) {
  return Math.min(8, Math.max(4, Math.round(length)))
}

function defaultDotsLabel(entered: number, length: number) {
  return `${entered} of ${length} entered`
}

function PinPad({
  length: lengthProp = 6,
  value: valueProp,
  defaultValue = "",
  onValueChange,
  onComplete,
  error = false,
  disabled = false,
  onBiometric,
  biometricIcon,
  biometricLabel,
  deleteLabel,
  dotsLabel = defaultDotsLabel,
  className,
  dotsClassName,
  keypadClassName,
  ...props
}: React.ComponentProps<typeof View> & {
  length?: number
  value?: string
  defaultValue?: string
  onValueChange?: (value: string) => void
  onComplete?: (value: string) => void
  error?: boolean
  disabled?: boolean
  onBiometric?: () => void
  biometricIcon?: PhosphorIcon
  biometricLabel?: string
  deleteLabel?: string
  dotsLabel?: (entered: number, length: number) => string
  dotsClassName?: string
  keypadClassName?: string
}) {
  const length = clampLength(lengthProp)
  const haptics = useHaptics()
  const [uncontrolled, setUncontrolled] = React.useState(() =>
    defaultValue.replace(/\D/g, "").slice(0, length)
  )
  const isControlled = valueProp !== undefined
  const value = (isControlled ? valueProp : uncontrolled).slice(0, length)
  const valueRef = React.useRef(value)
  valueRef.current = value
  const offset = useSharedValue(0)
  const wasError = React.useRef(error)

  const commit = React.useCallback(
    (next: string) => {
      if (next === valueRef.current) return false
      valueRef.current = next
      if (!isControlled) setUncontrolled(next)
      onValueChange?.(next)
      return true
    },
    [isControlled, onValueChange]
  )

  const onError = useEffectEvent(() => {
    haptics.notification("error")
    const step = {
      duration: SHAKE_DURATION / 6,
      reduceMotion: ReduceMotion.System,
    }
    offset.value = withSequence(
      withTiming(-12, step),
      withTiming(10, step),
      withTiming(-8, step),
      withTiming(6, step),
      withTiming(-3, step),
      withTiming(0, step)
    )
  })

  React.useEffect(() => {
    const previous = wasError.current
    wasError.current = error
    if (!error || previous) return
    onError()
  }, [error, onError])

  const shakeStyle = useAnimatedStyle(() => ({
    transform: [{ translateX: offset.value }],
  }))

  const press = (key: KeypadKeyValue) => {
    if (key === "biometric") {
      onBiometric?.()
      return
    }
    const current = valueRef.current
    if (key === "delete") {
      if (commit(current.slice(0, -1))) haptics.selection()
      return
    }
    if (key === "decimal" || current.length >= length) return
    const next = current + key
    if (!commit(next)) return
    haptics.selection()
    if (next.length === length) onComplete?.(next)
  }

  return (
    <View className={cn("items-center gap-10", className)} {...props}>
      <AnimatedView
        accessible
        accessibilityLabel={dotsLabel(value.length, length)}
        accessibilityLiveRegion="polite"
        className={cn("flex-row items-center gap-4", dotsClassName)}
        style={shakeStyle}
      >
        {Array.from({ length }, (_, position) => position).map((index) => {
          const filled = index < value.length
          return (
            <View
              key={index}
              className={cn(
                "size-3.5 rounded-full border-[1.5px]",
                error
                  ? filled
                    ? "border-danger bg-danger"
                    : "border-danger"
                  : filled
                    ? disabled
                      ? "border-label-quaternary bg-label-quaternary"
                      : "border-label bg-label"
                    : disabled
                      ? "border-label-quaternary"
                      : "border-separator-strong"
              )}
            />
          )
        })}
      </AnimatedView>
      <Keypad
        accessoryKey={onBiometric ? "biometric" : undefined}
        biometricIcon={biometricIcon}
        biometricLabel={biometricLabel}
        deleteLabel={deleteLabel}
        disabled={disabled}
        deleteDisabled={value.length === 0}
        onKeyPress={press}
        className={keypadClassName}
      />
    </View>
  )
}

export { PinPad }
```

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: [Keypad](/docs/components/keypad), and the primitives `components/primitives/haptics.tsx`, `components/primitives/hooks.tsx`.

3. Copy the source into `components/ui/pin-pad.tsx`:

```tsx title="stylesheet/components/ui/pin-pad.tsx"
import type { Icon as PhosphorIcon } from "phosphor-react-native"
import * as React from "react"
import { type StyleProp, StyleSheet, View, type ViewStyle } from "react-native"
import {
  ReduceMotion,
  useAnimatedStyle,
  useSharedValue,
  withSequence,
  withTiming,
} from "react-native-reanimated"
import { useHaptics } from "@/components/primitives/haptics"
import { useEffectEvent } from "@/components/primitives/hooks"
import { AnimatedView } from "@/components/ui/animated-view"
import { Keypad, type KeypadKeyValue } from "@/components/ui/keypad"
import { radius, useTheme } from "@/components/ui/theme"

const SHAKE_DURATION = 400

const styles = StyleSheet.create({
  root: { alignItems: "center", gap: 40 },
  dots: { flexDirection: "row", alignItems: "center", gap: 16 },
  dot: {
    width: 14,
    height: 14,
    borderRadius: radius.full,
    borderWidth: 1.5,
  },
})

function clampLength(length: number) {
  return Math.min(8, Math.max(4, Math.round(length)))
}

function defaultDotsLabel(entered: number, length: number) {
  return `${entered} of ${length} entered`
}

function PinPad({
  length: lengthProp = 6,
  value: valueProp,
  defaultValue = "",
  onValueChange,
  onComplete,
  error = false,
  disabled = false,
  onBiometric,
  biometricIcon,
  biometricLabel,
  deleteLabel,
  dotsLabel = defaultDotsLabel,
  style,
  dotsStyle,
  keypadStyle,
  ...props
}: React.ComponentProps<typeof View> & {
  length?: number
  value?: string
  defaultValue?: string
  onValueChange?: (value: string) => void
  onComplete?: (value: string) => void
  error?: boolean
  disabled?: boolean
  onBiometric?: () => void
  biometricIcon?: PhosphorIcon
  biometricLabel?: string
  deleteLabel?: string
  dotsLabel?: (entered: number, length: number) => string
  dotsStyle?: StyleProp<ViewStyle>
  keypadStyle?: StyleProp<ViewStyle>
}) {
  const { colors } = useTheme()
  const length = clampLength(lengthProp)
  const haptics = useHaptics()
  const [uncontrolled, setUncontrolled] = React.useState(() =>
    defaultValue.replace(/\D/g, "").slice(0, length)
  )
  const isControlled = valueProp !== undefined
  const value = (isControlled ? valueProp : uncontrolled).slice(0, length)
  const valueRef = React.useRef(value)
  valueRef.current = value
  const offset = useSharedValue(0)
  const wasError = React.useRef(error)

  const commit = React.useCallback(
    (next: string) => {
      if (next === valueRef.current) return false
      valueRef.current = next
      if (!isControlled) setUncontrolled(next)
      onValueChange?.(next)
      return true
    },
    [isControlled, onValueChange]
  )

  const onError = useEffectEvent(() => {
    haptics.notification("error")
    const step = {
      duration: SHAKE_DURATION / 6,
      reduceMotion: ReduceMotion.System,
    }
    offset.value = withSequence(
      withTiming(-12, step),
      withTiming(10, step),
      withTiming(-8, step),
      withTiming(6, step),
      withTiming(-3, step),
      withTiming(0, step)
    )
  })

  React.useEffect(() => {
    const previous = wasError.current
    wasError.current = error
    if (!error || previous) return
    onError()
  }, [error, onError])

  const shakeStyle = useAnimatedStyle(() => ({
    transform: [{ translateX: offset.value }],
  }))

  const press = (key: KeypadKeyValue) => {
    if (key === "biometric") {
      onBiometric?.()
      return
    }
    const current = valueRef.current
    if (key === "delete") {
      if (commit(current.slice(0, -1))) haptics.selection()
      return
    }
    if (key === "decimal" || current.length >= length) return
    const next = current + key
    if (!commit(next)) return
    haptics.selection()
    if (next.length === length) onComplete?.(next)
  }

  return (
    <View style={[styles.root, style]} {...props}>
      <AnimatedView
        accessible
        accessibilityLabel={dotsLabel(value.length, length)}
        accessibilityLiveRegion="polite"
        style={[styles.dots, dotsStyle, shakeStyle]}
      >
        {Array.from({ length }, (_, position) => position).map((index) => {
          const filled = index < value.length
          const color = error
            ? colors.danger
            : disabled
              ? colors.labelQuaternary
              : filled
                ? colors.label
                : colors.separatorStrong
          return (
            <View
              key={index}
              style={[
                styles.dot,
                {
                  borderColor: color,
                  backgroundColor: filled ? color : "transparent",
                },
              ]}
            />
          )
        })}
      </AnimatedView>
      <Keypad
        accessoryKey={onBiometric ? "biometric" : undefined}
        biometricIcon={biometricIcon}
        biometricLabel={biometricLabel}
        deleteLabel={deleteLabel}
        disabled={disabled}
        deleteDisabled={value.length === 0}
        onKeyPress={press}
        style={keypadStyle}
      />
    </View>
  )
}

export { PinPad }
```

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/Components/PinPad.swift"
import PhosphorSwift
import SwiftUI

enum PinPadMath {
  static func clamp(_ length: Int) -> Int {
    min(max(length, 4), 8)
  }

  static func press(_ key: KeypadKey, value: String, length: Int) -> String? {
    switch key {
    case .digit(let digit):
      guard value.count < length else { return nil }
      return value + String(digit)
    case .delete:
      guard !value.isEmpty else { return nil }
      return String(value.dropLast())
    case .decimal, .biometric:
      return nil
    }
  }
}

public struct PinPad: View {
  @Binding var value: String
  let length: Int
  let error: Bool
  let biometricIcon: Image
  let biometricLabel: LocalizedStringKey
  let deleteLabel: LocalizedStringKey
  let onBiometric: (() -> Void)?
  let onComplete: ((String) -> Void)?

  @Environment(\.isEnabled) private var isEnabled
  @State private var shakes = 0

  public init(
    value: Binding<String>,
    length: Int = 6,
    error: Bool = false,
    biometricIcon: Image = Ph.fingerprint.regular,
    biometricLabel: LocalizedStringKey = "Use biometrics",
    deleteLabel: LocalizedStringKey = "Delete",
    onBiometric: (() -> Void)? = nil,
    onComplete: ((String) -> Void)? = nil
  ) {
    _value = value
    self.length = PinPadMath.clamp(length)
    self.error = error
    self.biometricIcon = biometricIcon
    self.biometricLabel = biometricLabel
    self.deleteLabel = deleteLabel
    self.onBiometric = onBiometric
    self.onComplete = onComplete
  }

  public var body: some View {
    let count = min(value.count, length)
    VStack(spacing: 40) {
      PinPadDots(count: count, length: length, error: error)
        .shake(trigger: shakes)
      Keypad(
        accessory: onBiometric == nil ? .none : .biometric(biometricIcon, label: biometricLabel),
        deleteLabel: deleteLabel,
        canDelete: !value.isEmpty,
        press: press
      )
    }
    .onChange(of: error) { old, new in
      if !old && new { shakes += 1 }
    }
    .hapticFeedback(.error, trigger: error) { old, new in !old && new }
  }

  private func press(_ key: KeypadKey) -> Bool {
    guard isEnabled else { return false }
    if key == .biometric {
      onBiometric?()
      return onBiometric != nil
    }
    guard let next = PinPadMath.press(key, value: value, length: length) else { return false }
    value = next
    if case .digit = key, next.count == length {
      onComplete?(next)
    }
    return true
  }
}

private struct PinPadDots: View {
  let count: Int
  let length: Int
  let error: Bool

  @Environment(\.isEnabled) private var isEnabled

  var body: some View {
    HStack(spacing: 16) {
      ForEach(0..<length, id: \.self) { index in
        let filled = index < count
        Circle()
          .fill(filled ? tint : Color.clear)
          .overlay {
            Circle().strokeBorder(filled ? tint : border, lineWidth: 1.5)
          }
          .frame(width: 14, height: 14)
      }
    }
    .animation(.easeOut(duration: 0.15), value: count)
    .animation(.easeOut(duration: 0.2), value: error)
    .frame(minHeight: 24)
    .accessibilityElement(children: .ignore)
    .accessibilityLabel(Text("\(count) of \(length) entered"))
  }

  private var tint: Color {
    if error { return .danger }
    return isEnabled ? .label : .labelQuaternary
  }

  private var border: Color {
    if error { return .danger }
    return isEnabled ? .separatorStrong : .labelQuaternary
  }
}
```

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

import androidx.compose.animation.animateColorAsState
import androidx.compose.animation.core.Animatable
import androidx.compose.animation.core.tween
import androidx.compose.foundation.background
import androidx.compose.foundation.border
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.shape.CircleShape
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.setValue
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.graphicsLayer
import androidx.compose.ui.graphics.vector.ImageVector
import androidx.compose.ui.hapticfeedback.HapticFeedbackType
import androidx.compose.ui.semantics.LiveRegionMode
import androidx.compose.ui.semantics.clearAndSetSemantics
import androidx.compose.ui.semantics.contentDescription
import androidx.compose.ui.semantics.liveRegion
import androidx.compose.ui.unit.dp
import com.adamglin.PhosphorIcons
import com.adamglin.phosphoricons.Regular
import com.adamglin.phosphoricons.regular.Fingerprint
import com.esuiss.ui.theme.EsuissTheme

@Composable
fun PinPad(
    modifier: Modifier = Modifier,
    value: String? = null,
    onValueChange: ((String) -> Unit)? = null,
    defaultValue: String = "",
    length: Int = 6,
    onComplete: ((String) -> Unit)? = null,
    error: Boolean = false,
    enabled: Boolean = true,
    onBiometric: (() -> Unit)? = null,
    biometricIcon: ImageVector = PhosphorIcons.Regular.Fingerprint,
    biometricLabel: String = "Use biometrics",
    deleteLabel: String = "Delete",
    entryLabel: (entered: Int, length: Int) -> String = { entered, total -> "$entered of $total entered" },
) {
    val size = length.coerceIn(4, 8)
    var internal by remember { mutableStateOf(defaultValue.filter { it.isDigit() }.take(size)) }
    val current = (value ?: internal).take(size)
    val haptics = rememberHaptics()
    val reduced = formReducedMotion()
    val offset = remember { Animatable(0f) }
    LaunchedEffect(error) {
        if (error) {
            haptics.perform(HapticFeedbackType.Reject)
            if (!reduced) offset.shake()
        }
    }
    val update: (String) -> Unit = { next ->
        if (value == null) internal = next
        onValueChange?.invoke(next)
    }
    Column(
        modifier = modifier,
        verticalArrangement = Arrangement.spacedBy(48.dp),
        horizontalAlignment = Alignment.CenterHorizontally,
    ) {
        Row(
            modifier = Modifier
                .graphicsLayer { translationX = offset.value.dp.toPx() }
                .clearAndSetSemantics {
                    contentDescription = entryLabel(current.length, size)
                    liveRegion = LiveRegionMode.Polite
                },
            horizontalArrangement = Arrangement.spacedBy(16.dp),
            verticalAlignment = Alignment.CenterVertically,
        ) {
            repeat(size) { index -> PinPadDot(index < current.length, error, enabled) }
        }
        Keypad(
            onKeyPress = { key ->
                when (key) {
                    is KeypadKey.Digit -> if (current.length < size) {
                        val next = current + key.value
                        update(next)
                        if (next.length == size) onComplete?.invoke(next)
                    }
                    KeypadKey.Delete -> if (current.isNotEmpty()) update(current.dropLast(1))
                    KeypadKey.Biometric -> onBiometric?.invoke()
                    KeypadKey.Decimal -> Unit
                }
            },
            accessory = if (onBiometric != null) KeypadAccessory.Biometric(biometricIcon, biometricLabel) else KeypadAccessory.None,
            deleteLabel = deleteLabel,
            enabled = enabled,
        )
    }
}

@Composable
private fun PinPadDot(filled: Boolean, error: Boolean, enabled: Boolean) {
    val colors = EsuissTheme.colors
    val target = when {
        !enabled -> colors.labelQuaternary
        error -> colors.danger
        filled -> colors.label
        else -> colors.labelTertiary
    }
    val color by animateColorAsState(target, tween(150, easing = FormEasing), label = "dot")
    val fill by animateColorAsState(if (filled) target else Color.Transparent, tween(150, easing = FormEasing), label = "fill")
    Box(
        modifier = Modifier
            .size(14.dp)
            .background(fill, CircleShape)
            .border(1.5.dp, color, CircleShape),
    )
}
```

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

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

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

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

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

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

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

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

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

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

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

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

enum class ButtonGroupOrientation { Horizontal, Vertical }

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

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

internal object ButtonGroupFill

private object ButtonGroupDivider

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

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

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

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

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

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

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

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

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

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

val LocalContentStyle = compositionLocalOf { TextStyle.Default }

val LocalContentColor = compositionLocalOf { Color.Unspecified }

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

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

import androidx.compose.animation.core.Animatable
import androidx.compose.animation.core.AnimationVector1D
import androidx.compose.animation.core.keyframes
import androidx.compose.foundation.background
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.Column
import androidx.compose.foundation.layout.Row
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.getValue
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.clip
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.vector.ImageVector
import androidx.compose.ui.semantics.Role
import androidx.compose.ui.semantics.contentDescription
import androidx.compose.ui.semantics.semantics
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.unit.dp
import com.adamglin.PhosphorIcons
import com.adamglin.phosphoricons.Regular
import com.adamglin.phosphoricons.regular.Backspace
import com.adamglin.phosphoricons.regular.Fingerprint
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.Typography

private val KeypadKeySize = 72.dp

private val KeypadColumnGap = 24.dp

private val KeypadRowGap = 16.dp

private val KeypadRows = listOf(listOf(1, 2, 3), listOf(4, 5, 6), listOf(7, 8, 9))

sealed interface KeypadKey {
    data class Digit(val value: Int) : KeypadKey

    data object Decimal : KeypadKey

    data object Biometric : KeypadKey

    data object Delete : KeypadKey
}

sealed interface KeypadAccessory {
    data object None : KeypadAccessory

    data class Decimal(
        val separator: String = ".",
        val label: String = "Decimal separator",
    ) : KeypadAccessory

    data class Biometric(
        val icon: ImageVector = PhosphorIcons.Regular.Fingerprint,
        val label: String = "Use biometrics",
    ) : KeypadAccessory
}

@Composable
fun Keypad(
    onKeyPress: (KeypadKey) -> Unit,
    modifier: Modifier = Modifier,
    accessory: KeypadAccessory = KeypadAccessory.None,
    deleteLabel: String = "Delete",
    enabled: Boolean = true,
) {
    Column(
        modifier = modifier,
        verticalArrangement = Arrangement.spacedBy(KeypadRowGap),
        horizontalAlignment = Alignment.CenterHorizontally,
    ) {
        KeypadRows.forEach { row ->
            Row(horizontalArrangement = Arrangement.spacedBy(KeypadColumnGap)) {
                row.forEach { digit -> KeypadDigit(digit, enabled, onKeyPress) }
            }
        }
        Row(horizontalArrangement = Arrangement.spacedBy(KeypadColumnGap)) {
            when (accessory) {
                KeypadAccessory.None -> Box(Modifier.size(KeypadKeySize))
                is KeypadAccessory.Decimal -> KeypadButton(
                    onClick = { onKeyPress(KeypadKey.Decimal) },
                    enabled = enabled,
                    filled = true,
                    contentDescription = accessory.label,
                ) {
                    KeypadText(accessory.separator)
                }
                is KeypadAccessory.Biometric -> KeypadButton(
                    onClick = { onKeyPress(KeypadKey.Biometric) },
                    enabled = enabled,
                    filled = false,
                    contentDescription = accessory.label,
                ) {
                    Icon(accessory.icon, contentDescription = null, size = 32.dp)
                }
            }
            KeypadDigit(0, enabled, onKeyPress)
            KeypadButton(
                onClick = { onKeyPress(KeypadKey.Delete) },
                enabled = enabled,
                filled = false,
                contentDescription = deleteLabel,
            ) {
                Icon(PhosphorIcons.Regular.Backspace, contentDescription = null, size = 28.dp)
            }
        }
    }
}

@Composable
private fun KeypadDigit(digit: Int, enabled: Boolean, onKeyPress: (KeypadKey) -> Unit) {
    KeypadButton(onClick = { onKeyPress(KeypadKey.Digit(digit)) }, enabled = enabled, filled = true) {
        KeypadText(digit.toString())
    }
}

@Composable
private fun KeypadText(text: String) {
    BasicText(
        text,
        style = Typography.xl2.copy(
            color = LocalContentColor.current,
            fontWeight = FontWeight.Medium,
            fontFeatureSettings = "tnum",
        ),
    )
}

@Composable
private fun KeypadButton(
    onClick: () -> Unit,
    enabled: Boolean,
    filled: Boolean,
    contentDescription: String? = null,
    content: @Composable () -> Unit,
) {
    val colors = EsuissTheme.colors
    val interaction = remember { MutableInteractionSource() }
    val pressed by interaction.collectIsPressedAsState()
    val haptics = rememberHaptics()
    val background = when {
        !enabled -> if (filled) colors.controlDisabled else Color.Transparent
        pressed -> colors.controlPressed
        filled -> colors.control
        else -> Color.Transparent
    }
    val foreground = if (enabled) colors.label else colors.labelQuaternary
    Box(
        modifier = Modifier
            .size(KeypadKeySize)
            .clip(CircleShape)
            .background(background, CircleShape)
            .clickable(
                interactionSource = interaction,
                indication = null,
                enabled = enabled,
                role = Role.Button,
            ) {
                haptics.selection()
                onClick()
            }
            .then(
                if (contentDescription != null) {
                    Modifier.semantics { this.contentDescription = contentDescription }
                } else {
                    Modifier
                },
            ),
        contentAlignment = Alignment.Center,
    ) {
        CompositionLocalProvider(LocalContentColor provides foreground) {
            content()
        }
    }
}

internal suspend fun Animatable<Float, AnimationVector1D>.shake() {
    snapTo(0f)
    animateTo(
        0f,
        keyframes {
            durationMillis = 400
            -8f at 60
            7f at 140
            -5f at 220
            3f at 300
            0f at 400
        },
    )
}
```

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

## Usage

```tsx
import { PinPad } from "@/components/ui/pin-pad"
```

```tsx
<PinPad />
```

Use it uncontrolled with `defaultValue`, or controlled with `value` and `onValueChange`. `onComplete` fires with the full code once the last digit is entered; check the code there, set `error` when it is wrong and clear the value to let the user try again.

Pass `onBiometric` to show the biometric key, with `biometricIcon` and `biometricLabel` to match the method in use. Style the dots and keypad separately with `dotsClassName` and `keypadClassName`.

## Examples

### Filled

A pin pad with four of six digits entered.

![Preview](https://uim.suiss.app/previews/components-pin-pad--filled.light.webp)

```tsx
import { PinPad } from "@/components/ui/pin-pad"

export function PinPadFilledExample() {
  return (
    <PinPad defaultValue="1234" />
  )
}
```

```swift
import EsuissUI
import SwiftUI

struct PinPadFilledExample: View {
  var body: some View {
    PinPadDemo(value: "1234")
  }
}

struct PinPadDemo: View {
  let length: Int
  let error: Bool
  let biometric: Bool

  @State private var value: String

  init(value: String = "", length: Int = 6, error: Bool = false, biometric: Bool = false) {
    self.length = length
    self.error = error
    self.biometric = biometric
    _value = State(initialValue: value)
  }

  var body: some View {
    PinPad(value: $value, length: length, error: error, onBiometric: biometric ? {} : nil)
      .frame(maxWidth: .infinity)
  }
}
```

```kotlin
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp
import com.esuiss.ui.components.PinPad

@Composable
fun PinPadFilledExample() {
    PinPadCentered { PinPad(defaultValue = "1234") }
}

@Composable
fun PinPadCentered(content: @Composable () -> Unit) {
    Column(
        modifier = Modifier.fillMaxWidth(),
        horizontalAlignment = Alignment.CenterHorizontally,
        verticalArrangement = Arrangement.spacedBy(24.dp),
    ) {
        content()
    }
}
```

### Error

The error state with red dots.

![Preview](https://uim.suiss.app/previews/components-pin-pad--error-state.light.webp)

```tsx
import { PinPad } from "@/components/ui/pin-pad"

export function PinPadErrorStateExample() {
  return (
    <PinPad defaultValue="654321" error />
  )
}
```

```swift
import EsuissUI
import SwiftUI

struct PinPadErrorStateExample: View {
  var body: some View {
    PinPadDemo(value: "654321", error: true)
  }
}

struct PinPadDemo: View {
  let length: Int
  let error: Bool
  let biometric: Bool

  @State private var value: String

  init(value: String = "", length: Int = 6, error: Bool = false, biometric: Bool = false) {
    self.length = length
    self.error = error
    self.biometric = biometric
    _value = State(initialValue: value)
  }

  var body: some View {
    PinPad(value: $value, length: length, error: error, onBiometric: biometric ? {} : nil)
      .frame(maxWidth: .infinity)
  }
}
```

```kotlin
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp
import com.esuiss.ui.components.PinPad

@Composable
fun PinPadErrorStateExample() {
    PinPadCentered { PinPad(defaultValue = "654321", error = true) }
}

@Composable
fun PinPadCentered(content: @Composable () -> Unit) {
    Column(
        modifier = Modifier.fillMaxWidth(),
        horizontalAlignment = Alignment.CenterHorizontally,
        verticalArrangement = Arrangement.spacedBy(24.dp),
    ) {
        content()
    }
}
```

### Verify

Checks the code on completion, shows an error for a wrong code and clears it.

![Preview](https://uim.suiss.app/previews/components-pin-pad--verify.light.webp)

```tsx
import * as React from "react"
import { View } from "react-native"
import { PinPad } from "@/components/ui/pin-pad"
import { Text } from "@/components/ui/text"

const PASSCODE = "123456"

function VerifyDemo() {
  const [value, setValue] = React.useState("")
  const [error, setError] = React.useState(false)
  const [status, setStatus] = React.useState("Enter 123456")
  return (
    <View className="items-center gap-6">
      <Text
        role="status"
        accessibilityLiveRegion="polite"
        className={
          error ? "text-sm text-danger" : "text-sm text-label-secondary"
        }
      >
        {status}
      </Text>
      <PinPad
        value={value}
        error={error}
        onValueChange={(next) => {
          setValue(next)
          if (next.length > 0) setError(false)
        }}
        onComplete={(code) => {
          if (code === PASSCODE) {
            setStatus("Unlocked")
          } else {
            setError(true)
            setStatus("Wrong passcode. Try again.")
            setTimeout(() => setValue(""), 600)
          }
        }}
      />
    </View>
  )
}

export function PinPadVerifyExample() {
  return (
    <VerifyDemo />
  )
}
```

```swift
import EsuissUI
import SwiftUI

struct PinPadVerify: View {
  private static let passcode = "123456"

  @State private var value = ""
  @State private var error = false
  @State private var status = "Enter 123456"

  var body: some View {
    VStack(spacing: 24) {
      Text(verbatim: status)
        .textStyle(.sm)
        .foregroundStyle(error ? Color.danger : .labelSecondary)
        .accessibilityAddTraits(.updatesFrequently)
      PinPad(value: $value, error: error, onComplete: complete)
      .onChange(of: value) { _, next in
        if !next.isEmpty { error = false }
      }
    }
    .frame(maxWidth: .infinity)
  }

  func complete(_ code: String) {
    if code == Self.passcode {
      status = "Unlocked"
    } else {
      error = true
      status = "Wrong passcode. Try again."
      Task {
        try? await Task.sleep(for: .milliseconds(600))
        value = ""
      }
    }
  }
}

let passcode = "123456"
```

```kotlin
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
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.semantics.LiveRegionMode
import androidx.compose.ui.semantics.liveRegion
import androidx.compose.ui.semantics.semantics
import androidx.compose.ui.unit.dp
import com.esuiss.ui.components.PinPad
import com.esuiss.ui.components.Text
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.Typography
import kotlinx.coroutines.delay
import kotlinx.coroutines.launch

@Composable
fun PinPadCentered(content: @Composable () -> Unit) {
    Column(
        modifier = Modifier.fillMaxWidth(),
        horizontalAlignment = Alignment.CenterHorizontally,
        verticalArrangement = Arrangement.spacedBy(24.dp),
    ) {
        content()
    }
}

@Composable
fun PinPadVerify() {
    var value by rememberSaveable { mutableStateOf("") }
    var error by rememberSaveable { mutableStateOf(false) }
    var status by rememberSaveable { mutableStateOf("Enter 123456") }
    val scope = rememberCoroutineScope()
    val colors = EsuissTheme.colors
    PinPadCentered {
        Text(
            status,
            modifier = Modifier.semantics { liveRegion = LiveRegionMode.Polite },
            style = Typography.sm,
            color = if (error) colors.danger else colors.labelSecondary,
        )
        PinPad(
            value = value,
            error = error,
            onValueChange = { next ->
                value = next
                if (next.isNotEmpty()) error = false
            },
            onComplete = { code ->
                if (code == PinPadPasscode) {
                    status = "Unlocked"
                } else {
                    error = true
                    status = "Wrong passcode. Try again."
                    scope.launch {
                        delay(600)
                        value = ""
                    }
                }
            },
        )
    }
}
```

### Disabled

A disabled pin pad with a biometric key.

![Preview](https://uim.suiss.app/previews/components-pin-pad--disabled.light.webp)

```tsx
import { PinPad } from "@/components/ui/pin-pad"

export function PinPadDisabledExample() {
  return (
    <PinPad defaultValue="12" disabled onBiometric={() => {}} />
  )
}
```

```swift
import EsuissUI
import SwiftUI

struct PinPadDisabledExample: View {
  var body: some View {
    PinPadDemo(value: "12", biometric: true)
      .disabled(true)
  }
}

struct PinPadDemo: View {
  let length: Int
  let error: Bool
  let biometric: Bool

  @State private var value: String

  init(value: String = "", length: Int = 6, error: Bool = false, biometric: Bool = false) {
    self.length = length
    self.error = error
    self.biometric = biometric
    _value = State(initialValue: value)
  }

  var body: some View {
    PinPad(value: $value, length: length, error: error, onBiometric: biometric ? {} : nil)
      .frame(maxWidth: .infinity)
  }
}
```

```kotlin
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp
import com.esuiss.ui.components.PinPad

@Composable
fun PinPadDisabledExample() {
    PinPadCentered { PinPad(defaultValue = "12", enabled = false, onBiometric = {}) }
}

@Composable
fun PinPadCentered(content: @Composable () -> Unit) {
    Column(
        modifier = Modifier.fillMaxWidth(),
        horizontalAlignment = Alignment.CenterHorizontally,
        verticalArrangement = Arrangement.spacedBy(24.dp),
    ) {
        content()
    }
}
```

### Biometric

A biometric key with the default fingerprint icon.

![Preview](https://uim.suiss.app/previews/components-pin-pad--biometric.light.webp)

```tsx
import { ScanSmileyIcon } from "phosphor-react-native"
import * as React from "react"
import { View } from "react-native"
import { PinPad } from "@/components/ui/pin-pad"
import { Text } from "@/components/ui/text"

function BiometricDemo({ faceId = false }: { faceId?: boolean }) {
  const [log, setLog] = React.useState(0)
  return (
    <View className="items-center gap-6">
      <Text className="text-sm text-label-secondary">
        {log > 0 ? `Biometric requested (${log})` : "Biometric key"}
      </Text>
      <PinPad
        biometricIcon={faceId ? ScanSmileyIcon : undefined}
        biometricLabel={faceId ? "Use Face ID" : "Use Touch ID"}
        onBiometric={() => setLog((count) => count + 1)}
      />
    </View>
  )
}

export function PinPadBiometricExample() {
  return (
    <BiometricDemo />
  )
}
```

```swift
import EsuissUI
import PhosphorSwift
import SwiftUI

struct PinPadBiometricExample: View {
  var body: some View {
    PinPadBiometric(faceID: false)
  }
}

struct PinPadBiometric: View {
  let faceID: Bool

  @State private var value = ""
  @State private var log = 0

  var body: some View {
    VStack(spacing: 24) {
      Group {
        if log > 0 {
          Text(verbatim: "Biometric requested (\(log))")
        } else {
          Text("Biometric key")
        }
      }
      .textStyle(.sm)
      .foregroundStyle(Color.labelSecondary)
      PinPad(
        value: $value,
        biometricIcon: faceID ? Ph.scanSmiley.regular : Ph.fingerprint.regular,
        biometricLabel: faceID ? "Use Face ID" : "Use Touch ID",
        onBiometric: { log += 1 }
      )
    }
    .frame(maxWidth: .infinity)
  }
}
```

```kotlin
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableIntStateOf
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.unit.dp
import com.adamglin.PhosphorIcons
import com.adamglin.phosphoricons.Regular
import com.adamglin.phosphoricons.regular.Fingerprint
import com.adamglin.phosphoricons.regular.ScanSmiley
import com.esuiss.ui.components.PinPad
import com.esuiss.ui.components.Text
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.Typography

@Composable
fun PinPadBiometricExample() {
    PinPadBiometric(faceId = false)
}

@Composable
fun PinPadCentered(content: @Composable () -> Unit) {
    Column(
        modifier = Modifier.fillMaxWidth(),
        horizontalAlignment = Alignment.CenterHorizontally,
        verticalArrangement = Arrangement.spacedBy(24.dp),
    ) {
        content()
    }
}

@Composable
fun PinPadBiometric(faceId: Boolean) {
    var log by rememberSaveable { mutableIntStateOf(0) }
    PinPadCentered {
        Text(
            if (log > 0) "Biometric requested ($log)" else "Biometric key",
            style = Typography.sm,
            color = EsuissTheme.colors.labelSecondary,
        )
        PinPad(
            biometricIcon = if (faceId) PhosphorIcons.Regular.ScanSmiley else PhosphorIcons.Regular.Fingerprint,
            biometricLabel = if (faceId) "Use Face ID" else "Use Touch ID",
            onBiometric = { log += 1 },
        )
    }
}
```

### Face biometric

A biometric key with a face icon and a matching label.

![Preview](https://uim.suiss.app/previews/components-pin-pad--face-biometric.light.webp)

```tsx
import { ScanSmileyIcon } from "phosphor-react-native"
import * as React from "react"
import { View } from "react-native"
import { PinPad } from "@/components/ui/pin-pad"
import { Text } from "@/components/ui/text"

function BiometricDemo({ faceId = false }: { faceId?: boolean }) {
  const [log, setLog] = React.useState(0)
  return (
    <View className="items-center gap-6">
      <Text className="text-sm text-label-secondary">
        {log > 0 ? `Biometric requested (${log})` : "Biometric key"}
      </Text>
      <PinPad
        biometricIcon={faceId ? ScanSmileyIcon : undefined}
        biometricLabel={faceId ? "Use Face ID" : "Use Touch ID"}
        onBiometric={() => setLog((count) => count + 1)}
      />
    </View>
  )
}

export function PinPadFaceBiometricExample() {
  return (
    <BiometricDemo faceId />
  )
}
```

```swift
import EsuissUI
import PhosphorSwift
import SwiftUI

struct PinPadFaceBiometricExample: View {
  var body: some View {
    PinPadBiometric(faceID: true)
  }
}

struct PinPadBiometric: View {
  let faceID: Bool

  @State private var value = ""
  @State private var log = 0

  var body: some View {
    VStack(spacing: 24) {
      Group {
        if log > 0 {
          Text(verbatim: "Biometric requested (\(log))")
        } else {
          Text("Biometric key")
        }
      }
      .textStyle(.sm)
      .foregroundStyle(Color.labelSecondary)
      PinPad(
        value: $value,
        biometricIcon: faceID ? Ph.scanSmiley.regular : Ph.fingerprint.regular,
        biometricLabel: faceID ? "Use Face ID" : "Use Touch ID",
        onBiometric: { log += 1 }
      )
    }
    .frame(maxWidth: .infinity)
  }
}
```

```kotlin
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableIntStateOf
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.unit.dp
import com.adamglin.PhosphorIcons
import com.adamglin.phosphoricons.Regular
import com.adamglin.phosphoricons.regular.Fingerprint
import com.adamglin.phosphoricons.regular.ScanSmiley
import com.esuiss.ui.components.PinPad
import com.esuiss.ui.components.Text
import com.esuiss.ui.theme.EsuissTheme
import com.esuiss.ui.theme.Typography

@Composable
fun PinPadFaceBiometricExample() {
    PinPadBiometric(faceId = true)
}

@Composable
fun PinPadCentered(content: @Composable () -> Unit) {
    Column(
        modifier = Modifier.fillMaxWidth(),
        horizontalAlignment = Alignment.CenterHorizontally,
        verticalArrangement = Arrangement.spacedBy(24.dp),
    ) {
        content()
    }
}

@Composable
fun PinPadBiometric(faceId: Boolean) {
    var log by rememberSaveable { mutableIntStateOf(0) }
    PinPadCentered {
        Text(
            if (log > 0) "Biometric requested ($log)" else "Biometric key",
            style = Typography.sm,
            color = EsuissTheme.colors.labelSecondary,
        )
        PinPad(
            biometricIcon = if (faceId) PhosphorIcons.Regular.ScanSmiley else PhosphorIcons.Regular.Fingerprint,
            biometricLabel = if (faceId) "Use Face ID" else "Use Touch ID",
            onBiometric = { log += 1 },
        )
    }
}
```

### Four digits

A four-digit code with `length={4}`.

![Preview](https://uim.suiss.app/previews/components-pin-pad--four-digits.light.webp)

```tsx
import { PinPad } from "@/components/ui/pin-pad"

export function PinPadFourDigitsExample() {
  return (
    <PinPad length={4} defaultValue="1" />
  )
}
```

```swift
import EsuissUI
import SwiftUI

struct PinPadFourDigitsExample: View {
  var body: some View {
    PinPadDemo(value: "1", length: 4)
  }
}

struct PinPadDemo: View {
  let length: Int
  let error: Bool
  let biometric: Bool

  @State private var value: String

  init(value: String = "", length: Int = 6, error: Bool = false, biometric: Bool = false) {
    self.length = length
    self.error = error
    self.biometric = biometric
    _value = State(initialValue: value)
  }

  var body: some View {
    PinPad(value: $value, length: length, error: error, onBiometric: biometric ? {} : nil)
      .frame(maxWidth: .infinity)
  }
}
```

```kotlin
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp
import com.esuiss.ui.components.PinPad

@Composable
fun PinPadFourDigitsExample() {
    PinPadCentered { PinPad(defaultValue = "1", length = 4) }
}

@Composable
fun PinPadCentered(content: @Composable () -> Unit) {
    Column(
        modifier = Modifier.fillMaxWidth(),
        horizontalAlignment = Alignment.CenterHorizontally,
        verticalArrangement = Arrangement.spacedBy(24.dp),
    ) {
        content()
    }
}
```

## API Reference

### PinPad

## Accessibility

- The dots row is a single element labeled by `dotsLabel`, so screen readers hear progress without the digits.
- The row is a polite live region, so TalkBack announces progress as it changes.
- Keypad keys are buttons labeled with their digit; the delete and biometric keys use `deleteLabel` and `biometricLabel`.
- The shake animation respects the system reduce motion setting.

## Notes

- Uses `bg-label` for filled dots, `border-separator-strong` for empty ones and `bg-danger` in the error state; colors follow the system appearance.