feat(appearance): add accessible display preferences

bun.lock

@@ -96,7 +96,6 @@
       "name": "@workspace/appearance",
       "version": "0.0.0",
       "dependencies": {
-        "@icones/react": "^0.0.1",
         "@tanstack/react-hotkeys": "^0.10.0",
         "@workspace/i18n": "workspace:*",
         "@workspace/preferences": "workspace:*",

packages/appearance/package.json

@@ -8,7 +8,6 @@
     "typecheck": "tsc --noEmit"
   },
   "dependencies": {
-    "@icones/react": "^0.0.1",
     "@tanstack/react-hotkeys": "^0.10.0",
     "@workspace/i18n": "workspace:*",
     "@workspace/preferences": "workspace:*",
@@ -26,7 +25,9 @@
   },
   "exports": {
     ".": "./src/index.ts",
+    "./color-vision": "./src/color-vision.ts",
     "./components/*": "./src/components/*.tsx",
+    "./display": "./src/display.ts",
     "./effects": "./src/effects.ts",
     "./globals.css": "./src/styles/globals.css",
     "./locales": "./src/locales/catalogs.ts",

packages/appearance/src/components/appearance-atoms.test.tsx

@@ -5,7 +5,10 @@ import { I18nProvider } from "@workspace/i18n"
 import { afterEach, describe, expect, it, vi } from "vitest"
 
 import { messages as englishMessages } from "../locales/en-US"
-import { CompactLayoutField } from "./compact-layout-field"
+import { BrightnessField } from "./brightness-field"
+import { ColorVisionModeField } from "./color-vision-mode-field"
+import { MotionModeField } from "./motion-mode-field"
+import { TextScaleField } from "./text-scale-field"
 import { accentColorSwatches, ThemeColorPicker } from "./theme-color-picker"
 
 afterEach(cleanup)
@@ -18,16 +21,51 @@ function renderLocalized(node: React.ReactNode) {
   )
 }
 
+function selectOption(triggerName: string, optionName: string) {
+  fireEvent.click(screen.getByRole("combobox", { name: triggerName }))
+  const option = screen.getByRole("option", { name: optionName })
+  fireEvent.pointerDown(option, { pointerType: "mouse" })
+  fireEvent.click(option, { detail: 1 })
+}
+
 describe("appearance atoms", () => {
-  it("reports compact layout changes without owning state", () => {
-    const onCheckedChange = vi.fn()
+  it("reports color-vision mode changes without owning state", () => {
+    const onValueChange = vi.fn()
 
     renderLocalized(
-      <CompactLayoutField checked={false} onCheckedChange={onCheckedChange} />
+      <ColorVisionModeField value="standard" onValueChange={onValueChange} />
     )
 
-    fireEvent.click(screen.getByRole("switch"))
-    expect(onCheckedChange).toHaveBeenCalledWith(true)
+    selectOption("Color-vision assistance", "Green-weak assistance (deutan)")
+    expect(onValueChange).toHaveBeenCalledWith("deutan")
+  })
+
+  it("reports text scale, motion, and brightness changes", () => {
+    const setTextScale = vi.fn()
+    const setMotionMode = vi.fn()
+    const setBrightness = vi.fn()
+
+    const { rerender } = renderLocalized(
+      <TextScaleField value="100" onValueChange={setTextScale} />
+    )
+    selectOption("Text size", "150%")
+    expect(setTextScale).toHaveBeenCalledWith("150")
+
+    rerender(
+      <I18nProvider locale="en-US" catalogs={{ "en-US": englishMessages }}>
+        <MotionModeField value="system" onValueChange={setMotionMode} />
+      </I18nProvider>
+    )
+    selectOption("Motion", "Reduce motion")
+    expect(setMotionMode).toHaveBeenCalledWith("reduce")
+
+    rerender(
+      <I18nProvider locale="en-US" catalogs={{ "en-US": englishMessages }}>
+        <BrightnessField value="normal" onValueChange={setBrightness} />
+      </I18nProvider>
+    )
+    selectOption("Brightness", "Dim")
+    expect(setBrightness).toHaveBeenCalledWith("dim")
   })
 
   it("reports the selected theme color", () => {

packages/appearance/src/components/appearance-dialog.tsx

@@ -48,7 +48,7 @@ export function AppearanceDialogHeader() {
         <LocalizedText message={appearanceMessages.appearance} />
       </DialogTitle>
       <DialogDescription>
-        <LocalizedText message={appearanceMessages.themeAndLayoutPreferences} />
+        <LocalizedText message={appearanceMessages.appearanceDescription} />
       </DialogDescription>
     </DialogHeader>
   )

packages/appearance/src/components/appearance-settings.tsx

@@ -2,7 +2,10 @@ import { cn } from "@workspace/ui/lib/utils"
 import { usePreference } from "@workspace/preferences"
 
 import { useResolvedTheme } from "../use-resolved-theme"
-import { CompactLayoutField } from "./compact-layout-field"
+import { BrightnessField } from "./brightness-field"
+import { ColorVisionModeField } from "./color-vision-mode-field"
+import { MotionModeField } from "./motion-mode-field"
+import { TextScaleField } from "./text-scale-field"
 import { ThemeConfigCard } from "./theme-config-card"
 import { ThemeModeField } from "./theme-mode-field"
 
@@ -12,36 +15,36 @@ export interface AppearanceSettingsProps {
 
 export function AppearanceSettings({ className }: AppearanceSettingsProps) {
   const [themeMode, setThemeMode] = usePreference("theme-mode")
-  const [compacted, setCompacted] = usePreference("main-compacted")
-  const [lightTheme, setLightTheme] = usePreference("theme-light")
-  const [darkTheme, setDarkTheme] = usePreference("theme-dark")
+  const [accentColor, setAccentColor] = usePreference("accent-color")
+  const [baseColor, setBaseColor] = usePreference("base-color")
+  const [brightness, setBrightness] = usePreference("brightness")
+  const [colorVisionMode, setColorVisionMode] =
+    usePreference("color-vision-mode")
+  const [motionMode, setMotionMode] = usePreference("motion-mode")
+  const [textScale, setTextScale] = usePreference("text-scale")
   const resolvedTheme = useResolvedTheme()
+  const themeConfig = { accentColor, baseColor }
 
   return (
     <div className={cn("space-y-10", className)}>
-      <div className="flex flex-col gap-6 lg:flex-row">
+      <div className="grid gap-6 lg:grid-cols-2">
         <ThemeModeField value={themeMode} onValueChange={setThemeMode} />
-        <CompactLayoutField
-          checked={compacted}
-          onCheckedChange={setCompacted}
-        />
-      </div>
-      <div className="flex flex-col gap-6 lg:flex-row">
-        <ThemeConfigCard
-          active={resolvedTheme === "light"}
-          compacted={compacted}
-          config={lightTheme}
-          onConfigChange={setLightTheme}
-          scheme="light"
-        />
-        <ThemeConfigCard
-          active={resolvedTheme === "dark"}
-          compacted={compacted}
-          config={darkTheme}
-          onConfigChange={setDarkTheme}
-          scheme="dark"
+        <ColorVisionModeField
+          value={colorVisionMode}
+          onValueChange={setColorVisionMode}
         />
+        <TextScaleField value={textScale} onValueChange={setTextScale} />
+        <MotionModeField value={motionMode} onValueChange={setMotionMode} />
+        <BrightnessField value={brightness} onValueChange={setBrightness} />
       </div>
+      <ThemeConfigCard
+        config={themeConfig}
+        onConfigChange={(config) => {
+          setBaseColor(config.baseColor)
+          setAccentColor(config.accentColor)
+        }}
+        scheme={resolvedTheme}
+      />
     </div>
   )
 }

packages/appearance/src/components/brightness-field.tsx

@@ -0,0 +1,66 @@
+import { useMessage } from "@workspace/i18n"
+import { SunIcon } from "@workspace/ui/components/icon"
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "@workspace/ui/components/select"
+import { cn } from "@workspace/ui/lib/utils"
+
+import type { Brightness } from "../display"
+import { appearanceMessages } from "../messages"
+
+export interface BrightnessFieldProps {
+  className?: string
+  onValueChange: (value: Brightness) => void
+  value: Brightness
+}
+
+export function BrightnessField({
+  className,
+  onValueChange,
+  value,
+}: BrightnessFieldProps) {
+  const title = useMessage(appearanceMessages.brightness)
+  const dim = useMessage(appearanceMessages.brightnessDim)
+  const normal = useMessage(appearanceMessages.brightnessNormal)
+  const bright = useMessage(appearanceMessages.brightnessBright)
+  const description = useMessage(appearanceMessages.brightnessDescription)
+  const items: ReadonlyArray<{ label: string; value: Brightness }> = [
+    { label: dim, value: "dim" },
+    { label: normal, value: "normal" },
+    { label: bright, value: "bright" },
+  ]
+
+  return (
+    <div className={cn("min-w-0 lg:flex-1", className)}>
+      <h2 className="font-semibold">{title}</h2>
+      <p className="mt-1 text-sm text-muted-foreground">{description}</p>
+      <Select
+        items={items}
+        value={value}
+        onValueChange={(brightness) => {
+          if (brightness) onValueChange(brightness)
+        }}
+      >
+        <SelectTrigger aria-label={title} className="mt-2 w-full max-w-40">
+          <SunIcon />
+          <SelectValue>
+            {(selectedValue: Brightness | null) =>
+              items.find((item) => item.value === selectedValue)?.label
+            }
+          </SelectValue>
+        </SelectTrigger>
+        <SelectContent alignItemWithTrigger={false}>
+          {items.map((item) => (
+            <SelectItem key={item.value} value={item.value}>
+              {item.label}
+            </SelectItem>
+          ))}
+        </SelectContent>
+      </Select>
+    </div>
+  )
+}

packages/appearance/src/components/color-vision-mode-field.tsx

@@ -0,0 +1,75 @@
+import { useMessage } from "@workspace/i18n"
+import { EyeIcon } from "@workspace/ui/components/icon"
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "@workspace/ui/components/select"
+import { cn } from "@workspace/ui/lib/utils"
+
+import type { ColorVisionMode } from "../color-vision"
+import { appearanceMessages } from "../messages"
+
+export interface ColorVisionModeFieldProps {
+  className?: string
+  onValueChange: (value: ColorVisionMode) => void
+  value: ColorVisionMode
+}
+
+export function ColorVisionModeField({
+  className,
+  onValueChange,
+  value,
+}: ColorVisionModeFieldProps) {
+  const title = useMessage(appearanceMessages.colorVisionMode)
+  const standard = useMessage(appearanceMessages.colorVisionStandard)
+  const protan = useMessage(appearanceMessages.colorVisionProtan)
+  const deutan = useMessage(appearanceMessages.colorVisionDeutan)
+  const tritan = useMessage(appearanceMessages.colorVisionTritan)
+  const standardDescription = useMessage(
+    appearanceMessages.colorVisionStandardDescription
+  )
+  const assistedDescription = useMessage(
+    appearanceMessages.colorVisionAssistedDescription
+  )
+  const items: ReadonlyArray<{ label: string; value: ColorVisionMode }> = [
+    { label: standard, value: "standard" },
+    { label: protan, value: "protan" },
+    { label: deutan, value: "deutan" },
+    { label: tritan, value: "tritan" },
+  ]
+
+  return (
+    <div className={cn("min-w-0 lg:flex-1", className)}>
+      <h2 className="font-semibold">{title}</h2>
+      <p className="mt-1 text-sm text-muted-foreground">
+        {value === "standard" ? standardDescription : assistedDescription}
+      </p>
+      <Select
+        items={items}
+        value={value}
+        onValueChange={(mode) => {
+          if (mode) onValueChange(mode)
+        }}
+      >
+        <SelectTrigger aria-label={title} className="mt-2 w-full max-w-56">
+          <EyeIcon />
+          <SelectValue>
+            {(selectedValue: ColorVisionMode | null) =>
+              items.find((item) => item.value === selectedValue)?.label
+            }
+          </SelectValue>
+        </SelectTrigger>
+        <SelectContent alignItemWithTrigger={false}>
+          {items.map((item) => (
+            <SelectItem key={item.value} value={item.value}>
+              {item.label}
+            </SelectItem>
+          ))}
+        </SelectContent>
+      </Select>
+    </div>
+  )
+}

packages/appearance/src/components/compact-layout-field.tsx

@@ -1,33 +0,0 @@
-import { LocalizedText } from "@workspace/i18n"
-import { Switch } from "@workspace/ui/components/switch"
-import { cn } from "@workspace/ui/lib/utils"
-
-import { appearanceMessages } from "../messages"
-
-export interface CompactLayoutFieldProps {
-  checked: boolean
-  className?: string
-  onCheckedChange: (checked: boolean) => void
-}
-
-export function CompactLayoutField({
-  checked,
-  className,
-  onCheckedChange,
-}: CompactLayoutFieldProps) {
-  return (
-    <div className={cn("lg:flex-1", className)}>
-      <h2 className="font-semibold">
-        <LocalizedText message={appearanceMessages.compactLayout} />
-      </h2>
-      <p className="mt-1 text-sm text-muted-foreground">
-        <LocalizedText message={appearanceMessages.compactDescription} />
-      </p>
-      <Switch
-        className="mt-2"
-        checked={checked}
-        onCheckedChange={(nextChecked) => onCheckedChange(nextChecked)}
-      />
-    </div>
-  )
-}

packages/appearance/src/components/motion-mode-field.tsx

@@ -0,0 +1,70 @@
+import { useMessage } from "@workspace/i18n"
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "@workspace/ui/components/select"
+import { cn } from "@workspace/ui/lib/utils"
+
+import type { MotionMode } from "../display"
+import { appearanceMessages } from "../messages"
+
+export interface MotionModeFieldProps {
+  className?: string
+  onValueChange: (value: MotionMode) => void
+  value: MotionMode
+}
+
+export function MotionModeField({
+  className,
+  onValueChange,
+  value,
+}: MotionModeFieldProps) {
+  const title = useMessage(appearanceMessages.motionMode)
+  const system = useMessage(appearanceMessages.motionSystem)
+  const reduce = useMessage(appearanceMessages.motionReduce)
+  const full = useMessage(appearanceMessages.motionFull)
+  const descriptions = {
+    full: useMessage(appearanceMessages.motionFullDescription),
+    reduce: useMessage(appearanceMessages.motionReduceDescription),
+    system: useMessage(appearanceMessages.motionSystemDescription),
+  }
+  const items: ReadonlyArray<{ label: string; value: MotionMode }> = [
+    { label: system, value: "system" },
+    { label: reduce, value: "reduce" },
+    { label: full, value: "full" },
+  ]
+
+  return (
+    <div className={cn("min-w-0 lg:flex-1", className)}>
+      <h2 className="font-semibold">{title}</h2>
+      <p className="mt-1 text-sm text-muted-foreground">
+        {descriptions[value]}
+      </p>
+      <Select
+        items={items}
+        value={value}
+        onValueChange={(mode) => {
+          if (mode) onValueChange(mode)
+        }}
+      >
+        <SelectTrigger aria-label={title} className="mt-2 w-full max-w-56">
+          <SelectValue>
+            {(selectedValue: MotionMode | null) =>
+              items.find((item) => item.value === selectedValue)?.label
+            }
+          </SelectValue>
+        </SelectTrigger>
+        <SelectContent alignItemWithTrigger={false}>
+          {items.map((item) => (
+            <SelectItem key={item.value} value={item.value}>
+              {item.label}
+            </SelectItem>
+          ))}
+        </SelectContent>
+      </Select>
+    </div>
+  )
+}

packages/appearance/src/components/text-scale-field.tsx

@@ -0,0 +1,64 @@
+import { useMessage } from "@workspace/i18n"
+import { ALargeSmall } from "@workspace/ui/components/icon"
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "@workspace/ui/components/select"
+import { cn } from "@workspace/ui/lib/utils"
+
+import type { TextScale } from "../display"
+import { appearanceMessages } from "../messages"
+
+export interface TextScaleFieldProps {
+  className?: string
+  onValueChange: (value: TextScale) => void
+  value: TextScale
+}
+
+export function TextScaleField({
+  className,
+  onValueChange,
+  value,
+}: TextScaleFieldProps) {
+  const title = useMessage(appearanceMessages.textScale)
+  const description = useMessage(appearanceMessages.textScaleDescription)
+  const items: ReadonlyArray<{ label: string; value: TextScale }> = [
+    { label: "100%", value: "100" },
+    { label: "125%", value: "125" },
+    { label: "150%", value: "150" },
+    { label: "200%", value: "200" },
+  ]
+
+  return (
+    <div className={cn("min-w-0 lg:flex-1", className)}>
+      <h2 className="font-semibold">{title}</h2>
+      <p className="mt-1 text-sm text-muted-foreground">{description}</p>
+      <Select
+        items={items}
+        value={value}
+        onValueChange={(scale) => {
+          if (scale) onValueChange(scale)
+        }}
+      >
+        <SelectTrigger aria-label={title} className="mt-2 w-full max-w-40">
+          <ALargeSmall />
+          <SelectValue>
+            {(selectedValue: TextScale | null) =>
+              items.find((item) => item.value === selectedValue)?.label
+            }
+          </SelectValue>
+        </SelectTrigger>
+        <SelectContent alignItemWithTrigger={false}>
+          {items.map((item) => (
+            <SelectItem key={item.value} value={item.value}>
+              {item.label}
+            </SelectItem>
+          ))}
+        </SelectContent>
+      </Select>
+    </div>
+  )
+}

packages/appearance/src/components/theme-config-card.tsx

@@ -1,5 +1,4 @@
 import { LocalizedText } from "@workspace/i18n"
-import { Badge } from "@workspace/ui/components/badge"
 import { MoonIcon, SunIcon } from "@workspace/ui/components/icon"
 import { cn } from "@workspace/ui/lib/utils"
 
@@ -13,33 +12,20 @@ import {
 import { ThemePreview } from "./theme-preview"
 
 export interface ThemeConfigCardProps {
-  active?: boolean
   className?: string
-  compacted?: boolean
   config: ThemeColorConfig
   onConfigChange: (config: ThemeColorConfig) => void
   scheme: ThemeScheme
 }
 
 export function ThemeConfigCard({
-  active = false,
   className,
-  compacted = false,
   config,
   onConfigChange,
   scheme,
 }: ThemeConfigCardProps) {
-  const titleMessage =
-    scheme === "light"
-      ? appearanceMessages.lightTheme
-      : appearanceMessages.darkTheme
-  const descriptionMessage =
-    scheme === "light"
-      ? appearanceMessages.lightThemeDescription
-      : appearanceMessages.darkThemeDescription
-
   return (
-    <section className={cn("w-md rounded-xl border", className)}>
+    <section className={cn("w-full max-w-md rounded-xl border", className)}>
       <header className="flex gap-4 border-b p-3">
         {scheme === "light" ? (
           <SunIcon className="size-5" />
@@ -47,19 +33,14 @@ export function ThemeConfigCard({
           <MoonIcon className="size-5" />
         )}
         <h2>
-          <LocalizedText message={titleMessage} />
+          <LocalizedText message={appearanceMessages.themeColors} />
         </h2>
-        {active && (
-          <Badge className="ml-auto">
-            <LocalizedText message={appearanceMessages.active} />
-          </Badge>
-        )}
       </header>
       <div className="space-y-4 p-4">
         <p>
-          <LocalizedText message={descriptionMessage} />
+          <LocalizedText message={appearanceMessages.themeColorsDescription} />
         </p>
-        <ThemePreview compacted={compacted} config={config} scheme={scheme} />
+        <ThemePreview config={config} scheme={scheme} />
         <ThemeColorPicker
           swatches={baseColorSwatches}
           title={<LocalizedText message={appearanceMessages.baseColor} />}
@@ -70,7 +51,7 @@ export function ThemeConfigCard({
         />
         <ThemeColorPicker
           swatches={accentColorSwatches}
-          title={<LocalizedText message={appearanceMessages.primaryColor} />}
+          title={<LocalizedText message={appearanceMessages.accentColor} />}
           value={config.accentColor}
           onValueChange={(accentColor) =>
             onConfigChange({ ...config, accentColor })

packages/appearance/src/components/theme-mode-field.tsx

@@ -50,7 +50,7 @@ export function ThemeModeField({
   }[value]
 
   return (
-    <div className={cn("lg:flex-1", className)}>
+    <div className={cn("min-w-0 lg:flex-1", className)}>
       <h2 className="font-semibold">{title}</h2>
       <p className="mt-1 text-sm text-muted-foreground">{description}</p>
       <Select
@@ -60,7 +60,7 @@ export function ThemeModeField({
           if (mode) onValueChange(mode)
         }}
       >
-        <SelectTrigger className="mt-2 w-40">
+        <SelectTrigger aria-label={title} className="mt-2 w-full max-w-40">
           <SelectValue>
             {(selectedValue: ThemeMode | null) => (
               <>

packages/appearance/src/components/theme-preview.tsx

@@ -9,17 +9,11 @@ import { cn } from "@workspace/ui/lib/utils"
 
 export interface ThemePreviewProps {
   className?: string
-  compacted?: boolean
   config: ThemeColorConfig
   scheme: ThemeScheme
 }
 
-export function ThemePreview({
-  scheme,
-  config,
-  className,
-  compacted = false,
-}: ThemePreviewProps) {
+export function ThemePreview({ scheme, config, className }: ThemePreviewProps) {
   const themeVariables = getThemeCssVariables(scheme, config)
   const baseTheme = getTheme(config.baseColor) ?? getTheme("neutral")!
   const style = {
@@ -47,7 +41,7 @@ export function ThemePreview({
             <div className="mt-auto h-2.5 w-full rounded-r-full" />
           </div>
           <div className="flex-1 py-5">
-            <div className={cn("space-y-2.5", { "px-7.5": compacted })}>
+            <div className="space-y-2.5">
               <div className="flex h-2.5 items-center gap-2 [&>div]:bg-foreground/10">
                 <div className="h-2.5 w-3 rounded-sm" />
                 <div className="ml-auto size-2.5 rounded-sm" />
@@ -55,7 +49,7 @@ export function ThemePreview({
                 <div className="h-2.5 w-5 rounded-sm bg-accent!" />
               </div>
               <div className="grid grid-cols-3 gap-2 [&>div]:rounded-sm [&>div]:bg-foreground/10">
-                <div className="flex h-18 items-end gap-2 p-2 compacted:gap-1">
+                <div className="flex h-18 items-end gap-2 p-2">
                   <div className="h-6 w-2 rounded-t-sm bg-(--preview-base)/55" />
                   <div className="h-4 w-2 rounded-t-sm bg-(--preview-base)/55" />
                   <div className="h-11 w-2 rounded-t-sm bg-(--preview-base)/55" />
@@ -73,18 +67,18 @@ export function ThemePreview({
                   <div className="flex flex-wrap gap-1">
                     <div className="size-1 rounded-xs bg-(--preview-base)/55" />
                     <div className="h-1 w-6 rounded-xs bg-(--preview-base)/55" />
-                    <div className="h-1 w-3 rounded-xs bg-(--preview-base)/55 compacted:w-4" />
+                    <div className="h-1 w-3 rounded-xs bg-(--preview-base)/55" />
                     <div className="h-1 w-5 rounded-xs bg-(--preview-base)/55" />
                     <div className="h-1 w-5 rounded-xs bg-(--preview-base)/55" />
                     <div className="size-1 rounded-xs bg-(--preview-base)/55" />
                     <div className="h-1 w-5 rounded-xs bg-(--preview-base)/55" />
-                    <div className="h-1 w-2 rounded-xs bg-(--preview-base)/55 compacted:w-1" />
-                    <div className="size-1 rounded-xs bg-(--preview-base)/55 compacted:w-5" />
+                    <div className="h-1 w-2 rounded-xs bg-(--preview-base)/55" />
+                    <div className="size-1 rounded-xs bg-(--preview-base)/55" />
                     <div className="h-1 w-3 rounded-xs bg-(--preview-base)/55" />
                     <div className="size-1 rounded-xs bg-(--preview-base)/55" />
                     <div className="h-1 w-3 rounded-xs bg-(--preview-base)/55" />
-                    <div className="size-1 rounded-xs bg-(--preview-base)/55 compacted:w-3" />
-                    <div className="h-1 w-6 rounded-xs bg-(--preview-base)/55 compacted:hidden" />
+                    <div className="size-1 rounded-xs bg-(--preview-base)/55" />
+                    <div className="h-1 w-6 rounded-xs bg-(--preview-base)/55" />
                   </div>
                   <div className="flex items-center gap-1">
                     <div className="h-2 w-6 rounded-sm bg-accent" />

packages/appearance/src/effects.test.tsx

@@ -14,6 +14,12 @@ import {
 
 import { appearancePreferenceEffect } from "./effects"
 import { defaultAppearancePreferences } from "./preferences"
+import { COLOR_VISION_ATTRIBUTE } from "./color-vision"
+import {
+  BRIGHTNESS_ATTRIBUTE,
+  MOTION_ATTRIBUTE,
+  TEXT_SCALE_ATTRIBUTE,
+} from "./display"
 import { THEME_STYLE_ELEMENT_ID } from "./theme"
 
 beforeAll(() => {
@@ -43,6 +49,10 @@ afterEach(() => {
   cleanup()
   document.getElementById(THEME_STYLE_ELEMENT_ID)?.remove()
   document.documentElement.className = ""
+  document.documentElement.removeAttribute(COLOR_VISION_ATTRIBUTE)
+  document.documentElement.removeAttribute(BRIGHTNESS_ATTRIBUTE)
+  document.documentElement.removeAttribute(MOTION_ATTRIBUTE)
+  document.documentElement.removeAttribute(TEXT_SCALE_ATTRIBUTE)
   document.documentElement.style.colorScheme = ""
 })
 
@@ -71,6 +81,16 @@ describe("appearancePreferenceEffect", () => {
     )
 
     expect(document.documentElement.classList.contains("ui:light")).toBe(true)
+    expect(document.documentElement.getAttribute(COLOR_VISION_ATTRIBUTE)).toBe(
+      "standard"
+    )
+    expect(document.documentElement.getAttribute(BRIGHTNESS_ATTRIBUTE)).toBe(
+      "normal"
+    )
+    expect(document.documentElement.getAttribute(MOTION_ATTRIBUTE)).toBe("full")
+    expect(document.documentElement.getAttribute(TEXT_SCALE_ATTRIBUTE)).toBe(
+      "100"
+    )
     expect(
       document.getElementById(THEME_STYLE_ELEMENT_ID)?.textContent
     ).toContain("--background:")

packages/appearance/src/effects.ts

@@ -4,6 +4,13 @@ import {
 } from "@workspace/preferences"
 
 import type { AppearancePreferences } from "./preferences"
+import { COLOR_VISION_ATTRIBUTE } from "./color-vision"
+import {
+  BRIGHTNESS_ATTRIBUTE,
+  MOTION_ATTRIBUTE,
+  TEXT_SCALE_ATTRIBUTE,
+  type ResolvedMotionMode,
+} from "./display"
 import {
   buildThemeStyleSheet,
   THEME_STYLE_ELEMENT_ID,
@@ -11,10 +18,15 @@ import {
 } from "./theme"
 
 const systemThemeQuery = "(prefers-color-scheme: dark)"
-const themePreferenceKeys = [
+const reducedMotionQuery = "(prefers-reduced-motion: reduce)"
+const appearancePreferenceKeys = [
+  "accent-color",
+  "base-color",
+  "brightness",
+  "color-vision-mode",
+  "motion-mode",
+  "text-scale",
   "theme-mode",
-  "theme-light",
-  "theme-dark",
 ] as const satisfies readonly (keyof AppearancePreferences)[]
 
 let restoreThemeTransitionFrame: number | undefined
@@ -41,6 +53,10 @@ function getSystemTheme(): ThemeScheme {
   return window.matchMedia(systemThemeQuery).matches ? "dark" : "light"
 }
 
+function getSystemMotion(): ResolvedMotionMode {
+  return window.matchMedia(reducedMotionQuery).matches ? "reduce" : "full"
+}
+
 export function applyAppearancePreferences(preferences: AppearancePreferences) {
   if (typeof document === "undefined") return
 
@@ -49,19 +65,29 @@ export function applyAppearancePreferences(preferences: AppearancePreferences) {
     preferences["theme-mode"] === "system"
       ? getSystemTheme()
       : preferences["theme-mode"]
+  const resolvedMotion =
+    preferences["motion-mode"] === "system"
+      ? getSystemMotion()
+      : preferences["motion-mode"]
   const themeStyle = document.getElementById(THEME_STYLE_ELEMENT_ID)
 
   if (themeStyle) {
     themeStyle.textContent = buildThemeStyleSheet(
-      preferences["theme-light"],
-      preferences["theme-dark"]
+      {
+        accentColor: preferences["accent-color"],
+        baseColor: preferences["base-color"],
+      },
+      preferences["color-vision-mode"],
+      preferences.brightness
     )
   }
 
-  root.classList.toggle("ui:compacted", preferences["main-compacted"])
-  root.classList.toggle("ui:collapsed", preferences["sidebar-collapsed"])
   root.classList.toggle("ui:dark", resolvedTheme === "dark")
   root.classList.toggle("ui:light", resolvedTheme === "light")
+  root.setAttribute(BRIGHTNESS_ATTRIBUTE, preferences.brightness)
+  root.setAttribute(COLOR_VISION_ATTRIBUTE, preferences["color-vision-mode"])
+  root.setAttribute(MOTION_ATTRIBUTE, resolvedMotion)
+  root.setAttribute(TEXT_SCALE_ATTRIBUTE, preferences["text-scale"])
   root.style.colorScheme = resolvedTheme
 }
 
@@ -75,7 +101,7 @@ export const applyAppearancePreferenceEffect: PreferenceEffectCallback = ({
     previousPreferences as AppearancePreferences
 
   if (
-    themePreferenceKeys.some(
+    appearancePreferenceKeys.some(
       (key) =>
         !Object.is(
           previousAppearancePreferences[key],
@@ -107,8 +133,40 @@ export const subscribeSystemThemePreferenceEffect: PreferenceEffectCallback = ({
   return () => mediaQuery.removeEventListener("change", applySystemTheme)
 }
 
+/** Keeps system-mode motion synchronized with the operating system setting. */
+export const subscribeSystemMotionPreferenceEffect: PreferenceEffectCallback =
+  ({ preferences, store }) => {
+    const appearancePreferences = preferences as AppearancePreferences
+    if (appearancePreferences["motion-mode"] !== "system") return
+
+    const mediaQuery = window.matchMedia(reducedMotionQuery)
+    const applySystemMotion = () => {
+      applyAppearancePreferences(store.getSnapshot() as AppearancePreferences)
+    }
+
+    mediaQuery.addEventListener("change", applySystemMotion)
+    return () => mediaQuery.removeEventListener("change", applySystemMotion)
+  }
+
+/** Subscribes to every operating-system preference used by Appearance. */
+export const subscribeSystemAppearancePreferenceEffect: PreferenceEffectCallback =
+  (context) => {
+    const cleanups = [
+      subscribeSystemThemePreferenceEffect(context),
+      subscribeSystemMotionPreferenceEffect(context),
+    ].filter(
+      (cleanup): cleanup is VoidFunction => typeof cleanup === "function"
+    )
+
+    if (cleanups.length === 0) return
+
+    return () => {
+      for (const cleanup of cleanups) cleanup()
+    }
+  }
+
 /** Register this effect with the application's shared `PreferencesProvider`. */
 export const appearancePreferenceEffect: PreferenceEffect = {
   layoutEffect: applyAppearancePreferenceEffect,
-  effect: subscribeSystemThemePreferenceEffect,
+  effect: subscribeSystemAppearancePreferenceEffect,
 }

packages/appearance/src/index.ts

@@ -24,9 +24,21 @@ export {
   type AppearanceSettingsProps,
 } from "./components/appearance-settings"
 export {
-  CompactLayoutField,
-  type CompactLayoutFieldProps,
-} from "./components/compact-layout-field"
+  BrightnessField,
+  type BrightnessFieldProps,
+} from "./components/brightness-field"
+export {
+  ColorVisionModeField,
+  type ColorVisionModeFieldProps,
+} from "./components/color-vision-mode-field"
+export {
+  MotionModeField,
+  type MotionModeFieldProps,
+} from "./components/motion-mode-field"
+export {
+  TextScaleField,
+  type TextScaleFieldProps,
+} from "./components/text-scale-field"
 export {
   ThemeColorPicker,
   ThemeColorSwatchButton,
@@ -58,10 +70,36 @@ export {
   type ThemeToggleButtonProps,
   type ThemeToggleProps,
 } from "./components/theme-toggle-button"
+export {
+  COLOR_VISION_ATTRIBUTE,
+  colorVisionModes,
+  colorVisionPalettes,
+  getColorVisionCssVariables,
+  isColorVisionMode,
+  type ColorVisionMode,
+} from "./color-vision"
+export {
+  BRIGHTNESS_ATTRIBUTE,
+  MOTION_ATTRIBUTE,
+  TEXT_SCALE_ATTRIBUTE,
+  applyBrightnessToTheme,
+  brightnessModes,
+  isBrightness,
+  isMotionMode,
+  isTextScale,
+  motionModes,
+  textScales,
+  type Brightness,
+  type MotionMode,
+  type ResolvedMotionMode,
+  type TextScale,
+} from "./display"
 export {
   applyAppearancePreferenceEffect,
   applyAppearancePreferences,
   appearancePreferenceEffect,
+  subscribeSystemAppearancePreferenceEffect,
+  subscribeSystemMotionPreferenceEffect,
   subscribeSystemThemePreferenceEffect,
 } from "./effects"
 export {

packages/appearance/src/locales/zh-Hans.ts

@@ -4,8 +4,13 @@ export const locale = "zh-Hans"
 export const languageTag = "zh-CN"
 
 export const messages = {
-  "appearance.active": "使用中",
+  "appearance.accentColor": "强调色",
   "appearance.baseColor": "基础颜色",
+  "appearance.brightness.bright": "明亮",
+  "appearance.brightness.description": "调整界面表面，不改变图片和视频",
+  "appearance.brightness.dim": "柔暗",
+  "appearance.brightness.normal": "标准",
+  "appearance.brightness.title": "界面亮度",
   "appearance.color.amber": "琥珀色",
   "appearance.color.blue": "蓝色",
   "appearance.color.cyan": "青色",
@@ -30,10 +35,16 @@ export const messages = {
   "appearance.color.violet": "紫罗兰色",
   "appearance.color.yellow": "黄色",
   "appearance.color.zinc": "锌灰",
-  "appearance.command.description": "打开主题与布局偏好",
-  "appearance.compact.description": "启用后，页面主内容将使用紧凑宽度",
-  "appearance.compact.title": "紧凑布局",
-  "appearance.description": "主题与布局偏好",
+  "appearance.colorVision.assisted.description":
+    "使用更容易相互区分的语义色板；关键信息仍应搭配文字、图标或形状",
+  "appearance.colorVision.deutan": "绿色辨识辅助（Deutan）",
+  "appearance.colorVision.protan": "红色辨识辅助（Protan）",
+  "appearance.colorVision.standard": "标准颜色",
+  "appearance.colorVision.standard.description": "使用所选强调色和默认语义颜色",
+  "appearance.colorVision.title": "色彩辨识辅助",
+  "appearance.colorVision.tritan": "蓝黄色辨识辅助（Tritan）",
+  "appearance.command.description": "打开外观与无障碍偏好",
+  "appearance.description": "主题、颜色、文字、动态效果与界面亮度偏好",
   "appearance.mode.dark": "深色",
   "appearance.mode.dark.description": "界面将始终使用深色主题",
   "appearance.mode.light": "浅色",
@@ -41,11 +52,18 @@ export const messages = {
   "appearance.mode.system": "系统",
   "appearance.mode.system.description": "界面主题将跟随系统外观设置",
   "appearance.mode.title": "主题模式",
-  "appearance.primaryColor": "主要颜色",
-  "appearance.theme.dark": "深色主题",
-  "appearance.theme.dark.description": "当系统设置为深色模式时，将使用此主题",
-  "appearance.theme.light": "浅色主题",
-  "appearance.theme.light.description": "当系统设置为浅色模式时，将使用此主题",
+  "appearance.motion.full": "完整动效",
+  "appearance.motion.full.description": "允许所有界面动画和过渡效果",
+  "appearance.motion.reduce": "减少动态效果",
+  "appearance.motion.reduce.description": "减少非必要动画和平滑滚动",
+  "appearance.motion.system": "跟随系统",
+  "appearance.motion.system.description": "跟随操作系统的动态效果偏好",
+  "appearance.motion.title": "动态效果",
+  "appearance.textScale.description":
+    "同步缩放文字、控件与间距，使内容能够重新排版",
+  "appearance.textScale.title": "文字大小",
+  "appearance.themeColors": "主题颜色",
+  "appearance.themeColors.description": "为所有主题模式选择一组基础色和强调色",
   "appearance.title": "界面外观",
   "appearance.toggleTheme": "切换主题",
   "appearance.toggleTheme.dark": "切换为深色模式",

packages/appearance/src/messages.ts

@@ -1,9 +1,9 @@
 import type { MessageDescriptor } from "@workspace/i18n"
 
 export const appearanceMessages = {
-  active: /* i18n */ {
-    id: "appearance.active",
-    message: "Active",
+  accentColor: /* i18n */ {
+    id: "appearance.accentColor",
+    message: "Accent color",
   },
   appearance: /* i18n */ {
     id: "appearance.title",
@@ -11,19 +11,59 @@ export const appearanceMessages = {
   },
   appearanceCommandDescription: /* i18n */ {
     id: "appearance.command.description",
-    message: "Open theme and layout preferences",
+    message: "Open appearance and accessibility preferences",
   },
   baseColor: /* i18n */ {
     id: "appearance.baseColor",
     message: "Base color",
   },
-  compactDescription: /* i18n */ {
-    id: "appearance.compact.description",
-    message: "Use a compact width for the main page content",
+  brightness: /* i18n */ {
+    id: "appearance.brightness.title",
+    message: "Brightness",
   },
-  compactLayout: /* i18n */ {
-    id: "appearance.compact.title",
-    message: "Compact layout",
+  brightnessBright: /* i18n */ {
+    id: "appearance.brightness.bright",
+    message: "Bright",
+  },
+  brightnessDescription: /* i18n */ {
+    id: "appearance.brightness.description",
+    message: "Adjusts interface surfaces without changing media",
+  },
+  brightnessDim: /* i18n */ {
+    id: "appearance.brightness.dim",
+    message: "Dim",
+  },
+  brightnessNormal: /* i18n */ {
+    id: "appearance.brightness.normal",
+    message: "Normal",
+  },
+  colorVisionAssistedDescription: /* i18n */ {
+    id: "appearance.colorVision.assisted.description",
+    message: "Uses a palette with more distinguishable semantic colors",
+  },
+  colorVisionDeutan: /* i18n */ {
+    id: "appearance.colorVision.deutan",
+    message: "Green-weak assistance (deutan)",
+  },
+  colorVisionMode: /* i18n */ {
+    id: "appearance.colorVision.title",
+    message: "Color-vision assistance",
+  },
+  colorVisionProtan: /* i18n */ {
+    id: "appearance.colorVision.protan",
+    message: "Red-weak assistance (protan)",
+  },
+  colorVisionStandard: /* i18n */ {
+    id: "appearance.colorVision.standard",
+    message: "Standard colors",
+  },
+  colorVisionStandardDescription: /* i18n */ {
+    id: "appearance.colorVision.standard.description",
+    message: "Uses the selected accent and the default semantic colors",
+  },
+  colorVisionTritan: /* i18n */ {
+    id: "appearance.colorVision.tritan",
+    message: "Blue-yellow assistance (tritan)",
   },
   darkMode: /* i18n */ {
     id: "appearance.mode.dark",
@@ -33,14 +73,6 @@ export const appearanceMessages = {
     id: "appearance.mode.dark.description",
     message: "The interface will always use the dark theme",
   },
-  darkTheme: /* i18n */ {
-    id: "appearance.theme.dark",
-    message: "Dark theme",
-  },
-  darkThemeDescription: /* i18n */ {
-    id: "appearance.theme.dark.description",
-    message: "This theme is used when the system is in dark mode",
-  },
   followSystem: /* i18n */ {
     id: "appearance.mode.system",
     message: "System",
@@ -57,26 +89,58 @@ export const appearanceMessages = {
     id: "appearance.mode.light.description",
     message: "The interface will always use the light theme",
   },
-  lightTheme: /* i18n */ {
-    id: "appearance.theme.light",
-    message: "Light theme",
+  motionFull: /* i18n */ {
+    id: "appearance.motion.full",
+    message: "Full motion",
   },
-  lightThemeDescription: /* i18n */ {
-    id: "appearance.theme.light.description",
-    message: "This theme is used when the system is in light mode",
+  motionFullDescription: /* i18n */ {
+    id: "appearance.motion.full.description",
+    message: "Allows all interface motion and transitions",
   },
-  primaryColor: /* i18n */ {
-    id: "appearance.primaryColor",
-    message: "Primary color",
+  motionMode: /* i18n */ {
+    id: "appearance.motion.title",
+    message: "Motion",
   },
-  themeAndLayoutPreferences: /* i18n */ {
+  motionReduce: /* i18n */ {
+    id: "appearance.motion.reduce",
+    message: "Reduce motion",
+  },
+  motionReduceDescription: /* i18n */ {
+    id: "appearance.motion.reduce.description",
+    message: "Minimizes non-essential animation and smooth scrolling",
+  },
+  motionSystem: /* i18n */ {
+    id: "appearance.motion.system",
+    message: "System",
+  },
+  motionSystemDescription: /* i18n */ {
+    id: "appearance.motion.system.description",
+    message: "Follows the operating system motion preference",
+  },
+  appearanceDescription: /* i18n */ {
     id: "appearance.description",
-    message: "Theme and layout preferences",
+    message: "Theme, color, text, motion, and brightness preferences",
+  },
+  themeColors: /* i18n */ {
+    id: "appearance.themeColors",
+    message: "Theme colors",
+  },
+  themeColorsDescription: /* i18n */ {
+    id: "appearance.themeColors.description",
+    message: "Choose one base color and accent color for every theme mode",
   },
   themeMode: /* i18n */ {
     id: "appearance.mode.title",
     message: "Theme mode",
   },
+  textScale: /* i18n */ {
+    id: "appearance.textScale.title",
+    message: "Text size",
+  },
+  textScaleDescription: /* i18n */ {
+    id: "appearance.textScale.description",
+    message: "Scales text, controls, and spacing so content can reflow",
+  },
   toggleTheme: /* i18n */ {
     id: "appearance.toggleTheme",
     message: "Toggle theme",

packages/appearance/src/preferences.test.ts

@@ -9,32 +9,41 @@ import {
 describe("appearance preferences", () => {
   it("creates stable defaults", () => {
     expect(defaultAppearancePreferences).toEqual({
-      "main-compacted": false,
-      "sidebar-collapsed": false,
-      "theme-dark": { accentColor: "blue", baseColor: "neutral" },
-      "theme-light": { accentColor: "blue", baseColor: "neutral" },
+      "accent-color": "blue",
+      "base-color": "neutral",
+      brightness: "normal",
+      "color-vision-mode": "standard",
+      "motion-mode": "system",
+      "text-scale": "100",
       "theme-mode": "system",
     })
   })
 
   it("serializes and validates preference updates", () => {
-    const compacted = appearancePreferenceDefinitions["main-compacted"]
-    const theme = appearancePreferenceDefinitions["theme-light"]
+    const accentColor = appearancePreferenceDefinitions["accent-color"]
+    const colorVisionMode = appearancePreferenceDefinitions["color-vision-mode"]
 
-    expect(compacted.parse(compacted.serialize(true))).toBe(true)
-    expect(
-      theme.parse(
-        theme.serialize({
-          accentColor: "violet",
-          baseColor: "zinc",
-        })
-      )
-    ).toEqual({ accentColor: "violet", baseColor: "zinc" })
+    expect(accentColor.parse(accentColor.serialize("violet"))).toBe("violet")
+    expect(colorVisionMode.parse("deutan")).toBe("deutan")
+    expect(colorVisionMode.parse("unknown")).toBe("standard")
+    expect(appearancePreferenceDefinitions.brightness.parse("dim")).toBe("dim")
+    expect(appearancePreferenceDefinitions["motion-mode"].parse("bad")).toBe(
+      "system"
+    )
+    expect(appearancePreferenceDefinitions["text-scale"].parse("200")).toBe(
+      "200"
+    )
     expect(
       isAppearancePreferenceUpdate({ key: "theme-mode", value: "dark" })
     ).toBe(true)
     expect(
       isAppearancePreferenceUpdate({ key: "theme-mode", value: "unknown" })
     ).toBe(false)
+    expect(
+      isAppearancePreferenceUpdate({
+        key: "color-vision-mode",
+        value: "tritan",
+      })
+    ).toBe(true)
   })
 })

packages/appearance/src/preferences.ts

@@ -5,16 +5,33 @@ import {
   type PreferenceUpdateFor,
 } from "@workspace/preferences"
 
-import { accentColors, baseColors, type ThemeColorConfig } from "./theme"
+import { isColorVisionMode, type ColorVisionMode } from "./color-vision"
+import {
+  isBrightness,
+  isMotionMode,
+  isTextScale,
+  type Brightness,
+  type MotionMode,
+  type TextScale,
+} from "./display"
+import {
+  accentColors,
+  baseColors,
+  type AccentColor,
+  type BaseColor,
+  type ThemeColorConfig,
+} from "./theme"
 
 export type ThemeMode = "light" | "dark" | "system"
 
 export interface AppearancePreferences {
-  "main-compacted": boolean
-  "sidebar-collapsed": boolean
+  "accent-color": AccentColor
+  "base-color": BaseColor
+  brightness: Brightness
+  "color-vision-mode": ColorVisionMode
+  "motion-mode": MotionMode
+  "text-scale": TextScale
   "theme-mode": ThemeMode
-  "theme-light": ThemeColorConfig
-  "theme-dark": ThemeColorConfig
 }
 
 declare module "@workspace/preferences" {
@@ -48,40 +65,61 @@ export function isThemeColorConfig(value: unknown): value is ThemeColorConfig {
   )
 }
 
-function isBoolean(value: unknown): value is boolean {
-  return typeof value === "boolean"
+function isAccentColor(value: unknown): value is AccentColor {
+  return accentColors.some((color) => color === value)
+}
+
+function isBaseColor(value: unknown): value is BaseColor {
+  return baseColors.some((color) => color === value)
 }
 
 function isThemeMode(value: unknown): value is ThemeMode {
   return value === "light" || value === "dark" || value === "system"
 }
 
-function parseThemeColorConfig(value: string | undefined): ThemeColorConfig {
-  if (!value) return { ...defaultThemeColorConfig }
-
-  try {
-    const parsed: unknown = JSON.parse(value)
-    return isThemeColorConfig(parsed) ? parsed : { ...defaultThemeColorConfig }
-  } catch {
-    return { ...defaultThemeColorConfig }
-  }
-}
-
 export const appearancePreferenceDefinitions: PreferenceDefinitions<AppearancePreferences> =
   {
-    "main-compacted": {
-      cookie: "ui-main-compacted",
-      defaultValue: false,
-      is: isBoolean,
-      parse: (value) => value === "1",
-      serialize: (value) => (value ? "1" : "0"),
+    "accent-color": {
+      cookie: "ui-accent-color",
+      defaultValue: defaultThemeColorConfig.accentColor,
+      is: isAccentColor,
+      parse: (value) => (isAccentColor(value) ? value : "blue"),
+      serialize: (value) => value,
     },
-    "sidebar-collapsed": {
-      cookie: "ui-sidebar-collapsed",
-      defaultValue: false,
-      is: isBoolean,
-      parse: (value) => value === "true" || value === "1",
-      serialize: (value) => (value ? "1" : "0"),
+    "base-color": {
+      cookie: "ui-base-color",
+      defaultValue: defaultThemeColorConfig.baseColor,
+      is: isBaseColor,
+      parse: (value) => (isBaseColor(value) ? value : "neutral"),
+      serialize: (value) => value,
+    },
+    brightness: {
+      cookie: "ui-brightness",
+      defaultValue: "normal",
+      is: isBrightness,
+      parse: (value) => (isBrightness(value) ? value : "normal"),
+      serialize: (value) => value,
+    },
+    "color-vision-mode": {
+      cookie: "ui-color-vision",
+      defaultValue: "standard",
+      is: isColorVisionMode,
+      parse: (value) => (isColorVisionMode(value) ? value : "standard"),
+      serialize: (value) => value,
+    },
+    "motion-mode": {
+      cookie: "ui-motion",
+      defaultValue: "system",
+      is: isMotionMode,
+      parse: (value) => (isMotionMode(value) ? value : "system"),
+      serialize: (value) => value,
+    },
+    "text-scale": {
+      cookie: "ui-text-scale",
+      defaultValue: "100",
+      is: isTextScale,
+      parse: (value) => (isTextScale(value) ? value : "100"),
+      serialize: (value) => value,
     },
     "theme-mode": {
       cookie: "ui-theme",
@@ -90,20 +128,6 @@ export const appearancePreferenceDefinitions: PreferenceDefinitions<AppearancePr
       parse: (value) => (isThemeMode(value) ? value : "system"),
       serialize: (value) => value,
     },
-    "theme-light": {
-      cookie: "ui-theme-light",
-      defaultValue: { ...defaultThemeColorConfig },
-      is: isThemeColorConfig,
-      parse: parseThemeColorConfig,
-      serialize: JSON.stringify,
-    },
-    "theme-dark": {
-      cookie: "ui-theme-dark",
-      defaultValue: { ...defaultThemeColorConfig },
-      is: isThemeColorConfig,
-      parse: parseThemeColorConfig,
-      serialize: JSON.stringify,
-    },
   }
 
 export const defaultAppearancePreferences = createDefaultPreferences(

packages/appearance/src/styles/globals.css

@@ -1 +1,50 @@
 @source "../";
+
+.ui\:theme-changing *,
+.ui\:theme-changing *::before,
+.ui\:theme-changing *::after {
+  transition: none !important;
+}
+
+html[data-ui-text-scale="100"] {
+  font-size: 100%;
+}
+
+html[data-ui-text-scale="125"] {
+  font-size: 125%;
+}
+
+html[data-ui-text-scale="150"] {
+  font-size: 150%;
+}
+
+html[data-ui-text-scale="200"] {
+  font-size: 200%;
+}
+
+html[data-ui-motion="reduce"] {
+  scroll-behavior: auto !important;
+}
+
+html[data-ui-motion="reduce"] *,
+html[data-ui-motion="reduce"] *::before,
+html[data-ui-motion="reduce"] *::after {
+  animation-delay: 0ms !important;
+  animation-duration: 1ms !important;
+  animation-iteration-count: 1 !important;
+  scroll-behavior: auto !important;
+  transition-delay: 0ms !important;
+  transition-duration: 1ms !important;
+}
+
+@keyframes ui-reduced-motion-status {
+  50% {
+    opacity: 0.55;
+  }
+}
+
+html[data-ui-motion="reduce"] [data-slot="spinner"],
+html[data-ui-motion="reduce"] [data-slot="skeleton"],
+html[data-ui-motion="reduce"] [data-slot="toast-icon"] .animate-spin {
+  animation: ui-reduced-motion-status 2s ease-in-out infinite !important;
+}

packages/appearance/src/theme.test.ts

@@ -34,7 +34,8 @@ describe("appearance themes", () => {
   it("builds explicit and system color-scheme rules", () => {
     const styleSheet = buildThemeStyleSheet(
       { accentColor: "blue", baseColor: "neutral" },
-      { accentColor: "violet", baseColor: "zinc" }
+      "deutan",
+      "dim"
     )
 
     expect(styleSheet).toContain(":root,.ui\\:light{")
@@ -43,5 +44,9 @@ describe("appearance themes", () => {
     expect(styleSheet).toContain("--background:")
     expect(styleSheet).toContain("--accent:")
     expect(styleSheet).toContain("--highlight:")
+    expect(styleSheet).toContain("--destructive:#a64b00")
+    expect(styleSheet).toContain("--destructive:#ff9d66")
+    expect(styleSheet).toContain("--background:color-mix(in oklch,")
+    expect(styleSheet).not.toContain("filter:")
   })
 })

packages/appearance/src/theme.ts

@@ -5,6 +5,11 @@ import {
   type ThemeColorConfig,
   type ThemeScheme,
 } from "./themes"
+import {
+  getColorVisionCssVariables,
+  type ColorVisionMode,
+} from "./color-vision"
+import { applyBrightnessToTheme, type Brightness } from "./display"
 
 export {
   accentColors,
@@ -42,13 +47,30 @@ function serializeThemeVariables(theme: Record<string, string>): string {
 }
 
 export function buildThemeStyleSheet(
-  lightConfig: ThemeColorConfig,
-  darkConfig: ThemeColorConfig
+  config: ThemeColorConfig,
+  colorVisionMode: ColorVisionMode = "standard",
+  brightness: Brightness = "normal"
 ) {
   const light = serializeThemeVariables(
-    getThemeCssVariables("light", lightConfig)
+    applyBrightnessToTheme(
+      {
+        ...getThemeCssVariables("light", config),
+        ...getColorVisionCssVariables(colorVisionMode, "light"),
+      },
+      brightness,
+      "light"
+    )
+  )
+  const dark = serializeThemeVariables(
+    applyBrightnessToTheme(
+      {
+        ...getThemeCssVariables("dark", config),
+        ...getColorVisionCssVariables(colorVisionMode, "dark"),
+      },
+      brightness,
+      "dark"
+    )
   )
-  const dark = serializeThemeVariables(getThemeCssVariables("dark", darkConfig))
 
   return [
     `:root,.ui\\:light{${light}}`,