feat(native): introduce title-accent CSS variable for per-title color theming

Replace hardcoded `--color-primary` references on the title detail screen
with a dedicated `--color-title-accent` / `--color-title-accent-foreground`
variable pair, allowing the poster-derived palette to style title UI
elements without polluting the global primary color.

- Add `--color-title-accent` and `--color-title-accent-foreground` to
  `global.css` with default warm amber values
- Update `use-title-theme.ts` to set `--color-title-accent` instead of
  `--color-primary`; switch from `useFocusEffect` to `useEffect`
- Replace all `bg-primary`, `text-primary`, `border-primary` etc. in
  `title/[id].tsx` and title components with `title-accent` equivalents
- Add `accentColor` prop to `StarRating` so it can receive the resolved
  CSS variable value at runtime
- Pass `iconColor={titleAccent}` to all `SectionHeader` instances on the
  title detail screen
- Use platform-appropriate store icon (App Store / Google Play) for the
  "Where to Watch" section header
- Switch progress bar in `ContinueWatchingBanner` from `bg-status-watching`
  to `bg-title-accent`

apps/native/src/app/title/[id].tsx

@@ -1,4 +1,6 @@
 import {
+  IconBrandAppstore,
+  IconBrandGooglePlay,
   IconCheck,
   IconList,
   IconMovie,
@@ -15,6 +17,7 @@ import * as WebBrowser from "expo-web-browser";
 import { useCallback, useEffect, useMemo, useRef, useState } from "react";
 import {
   FlatList,
+  Platform,
   Pressable,
   RefreshControl,
   ScrollView,
@@ -45,10 +48,10 @@ export default function TitleDetailScreen() {
   const insets = useSafeAreaInsets();
   const { back } = useRouter();
 
-  const [primary, mutedForeground, primaryForeground] = useCSSVariable([
-    "--color-primary",
+  const [titleAccent, mutedForeground, titleAccentForeground] = useCSSVariable([
+    "--color-title-accent",
     "--color-muted-foreground",
-    "--color-primary-foreground",
+    "--color-title-accent-foreground",
   ]) as [string, string, string];
 
   const detail = useQuery(orpc.titles.detail.queryOptions({ input: { id } }));
@@ -246,7 +249,7 @@ export default function TitleDetailScreen() {
         <RefreshControl
           refreshing={refreshing}
           onRefresh={onRefresh}
-          tintColorClassName="accent-primary"
+          tintColorClassName="accent-title-accent"
         />
       }
     >
@@ -305,11 +308,7 @@ export default function TitleDetailScreen() {
         )}
         {/* Bottom fade to background */}
         <LinearGradient
-          colors={[
-            "transparent",
-            "rgba(0,0,0,0.6)",
-            "rgba(0,0,0,0.95)",
-          ]}
+          colors={["transparent", "rgba(0,0,0,0.6)", "rgba(0,0,0,0.95)"]}
           locations={[0, 0.5, 1]}
           style={{
             position: "absolute",
@@ -370,8 +369,8 @@ export default function TitleDetailScreen() {
               {title.title}
             </Text>
             <View className="mt-1.5 flex-row flex-wrap items-center gap-2">
-              <View className="rounded-full bg-primary px-2 py-0.5">
-                <Text className="font-sans-medium text-[10px] text-primary-foreground">
+              <View className="rounded-full bg-title-accent px-2 py-0.5">
+                <Text className="font-sans-medium text-[10px] text-title-accent-foreground">
                   {title.type === "movie" ? "Movie" : "TV"}
                 </Text>
               </View>
@@ -385,8 +384,8 @@ export default function TitleDetailScreen() {
               ) : null}
               {title.voteAverage != null && title.voteAverage > 0 && (
                 <View className="flex-row items-center gap-0.5">
-                  <IconStarFilled size={12} color={primary} />
-                  <Text className="text-primary text-xs">
+                  <IconStarFilled size={12} color={titleAccent} />
+                  <Text className="text-title-accent text-xs">
                     {title.voteAverage.toFixed(1)}
                   </Text>
                 </View>
@@ -454,20 +453,21 @@ export default function TitleDetailScreen() {
           <StarRating
             rating={userInfo.data?.rating ?? 0}
             onRate={(stars) => updateRating.mutate({ id, stars })}
+            accentColor={titleAccent}
           />
 
           {title.type === "movie" && (
             <Pressable
               onPress={() => watchMovie.mutate({ id })}
               disabled={watchMovie.isPending}
-              className="flex-row items-center gap-1.5 rounded-full bg-primary px-4 py-2"
+              className="flex-row items-center gap-1.5 rounded-full bg-title-accent px-4 py-2"
             >
               {watchMovie.isPending ? (
                 <Spinner size="sm" />
               ) : (
                 <>
-                  <IconCheck size={16} color={primaryForeground} />
-                  <Text className="font-sans-medium text-[13px] text-primary-foreground">
+                  <IconCheck size={16} color={titleAccentForeground} />
+                  <Text className="font-sans-medium text-[13px] text-title-accent-foreground">
                     Mark Watched
                   </Text>
                 </>
@@ -493,7 +493,13 @@ export default function TitleDetailScreen() {
           className="mt-6"
         >
           <View className="px-4">
-            <SectionHeader title="Where to Watch" icon={IconPlayerPlay} />
+            <SectionHeader
+              title="Where to Watch"
+              icon={
+                Platform.OS === "ios" ? IconBrandAppstore : IconBrandGooglePlay
+              }
+              iconColor={titleAccent}
+            />
           </View>
           <ScrollView
             horizontal
@@ -540,7 +546,11 @@ export default function TitleDetailScreen() {
           entering={FadeInDown.duration(300).delay(400)}
           className="mt-6 px-4"
         >
-          <SectionHeader title="Seasons" icon={IconList} />
+          <SectionHeader
+            title="Seasons"
+            icon={IconList}
+            iconColor={titleAccent}
+          />
           {seasons.map((season) => (
             <SeasonAccordion
               key={season.id}
@@ -554,7 +564,7 @@ export default function TitleDetailScreen() {
 
       {hydrateMutation.isPending && (
         <View className="items-center py-6">
-          <Spinner colorClassName="accent-primary" />
+          <Spinner colorClassName="accent-title-accent" />
           <Text className="mt-2 text-[13px] text-muted-foreground">
             Loading season data...
           </Text>
@@ -568,7 +578,11 @@ export default function TitleDetailScreen() {
           className="mt-6"
         >
           <View className="px-4">
-            <SectionHeader title="Cast" icon={IconUsers} />
+            <SectionHeader
+              title="Cast"
+              icon={IconUsers}
+              iconColor={titleAccent}
+            />
           </View>
           <FlatList
             horizontal
@@ -590,7 +604,11 @@ export default function TitleDetailScreen() {
             className="mt-6"
           >
             <View className="px-4">
-              <SectionHeader title="More Like This" icon={IconThumbUp} />
+              <SectionHeader
+                title="More Like This"
+                icon={IconThumbUp}
+                iconColor={titleAccent}
+              />
             </View>
             <FlatList
               horizontal

apps/native/src/components/titles/continue-watching-banner.tsx

@@ -4,6 +4,7 @@ import { IconPlayerPlay } from "@tabler/icons-react-native";
 import { useMemo } from "react";
 import { View } from "react-native";
 import Animated, { FadeInDown } from "react-native-reanimated";
+import { useCSSVariable } from "uniwind";
 import { Image } from "@/components/ui/image";
 import { SectionHeader } from "@/components/ui/section-header";
 import { Text } from "@/components/ui/text";
@@ -19,6 +20,8 @@ export function ContinueWatchingBanner({
   userStatus: string | null;
   backdropPath: string | null;
 }) {
+  const titleAccentColor = useCSSVariable("--color-title-accent") as string;
+
   const { nextEpisode, totalEpisodes, watchedEpisodes } = useMemo(
     () => getNextEpisode(seasons, watchedEpisodeIds),
     [seasons, watchedEpisodeIds],
@@ -35,7 +38,11 @@ export function ContinueWatchingBanner({
       entering={FadeInDown.duration(300).delay(350)}
       className="mt-6 px-4"
     >
-      <SectionHeader title="Next Episode" icon={IconPlayerPlay} />
+      <SectionHeader
+        title="Next Episode"
+        icon={IconPlayerPlay}
+        iconColor={titleAccentColor}
+      />
       <View
         className="overflow-hidden rounded-[12px] border bg-card"
         style={{
@@ -59,8 +66,8 @@ export function ContinueWatchingBanner({
           />
           <View className="absolute right-3 bottom-2.5 left-3">
             <View className="flex-row items-center gap-1.5">
-              <View className="h-1.5 w-1.5 rounded-full bg-primary" />
-              <Text className="font-sans-medium text-[10px] text-primary uppercase tracking-wider">
+              <View className="h-1.5 w-1.5 rounded-full bg-title-accent" />
+              <Text className="font-sans-medium text-[10px] text-title-accent uppercase tracking-wider">
                 Up next
               </Text>
             </View>
@@ -80,7 +87,7 @@ export function ContinueWatchingBanner({
             style={{ backgroundColor: "rgba(255,255,255,0.1)" }}
           >
             <View
-              className="h-full bg-status-watching"
+              className="h-full bg-title-accent"
               style={{ width: `${progress}%` }}
             />
           </View>

apps/native/src/components/titles/episode-row.tsx

@@ -20,7 +20,7 @@ export function EpisodeRow({
   isWatched: boolean;
   onToggle: () => void;
 }) {
-  const completedColor = useCSSVariable("--color-status-completed") as string;
+  const titleAccentColor = useCSSVariable("--color-title-accent") as string;
   const mutedFgColor = useCSSVariable("--color-muted-foreground") as string;
 
   return (
@@ -30,7 +30,7 @@ export function EpisodeRow({
       style={{ borderBottomWidth: 0.5 }}
     >
       {isWatched ? (
-        <IconCircleCheckFilled size={22} color={completedColor} />
+        <IconCircleCheckFilled size={22} color={titleAccentColor} />
       ) : (
         <IconCircleDashed size={22} color={mutedFgColor} />
       )}

apps/native/src/components/titles/season-accordion.tsx

@@ -34,8 +34,7 @@ export function SeasonAccordion({
   }>;
   watchedEpisodeIds: Set<string>;
 }) {
-  const completedColor = useCSSVariable("--color-status-completed") as string;
-  const watchingColor = useCSSVariable("--color-status-watching") as string;
+  const titleAccentColor = useCSSVariable("--color-title-accent") as string;
   const mutedFgColor = useCSSVariable("--color-muted-foreground") as string;
 
   const [expanded, setExpanded] = useState(false);
@@ -145,7 +144,7 @@ export function SeasonAccordion({
             style={{
               height: "100%",
               width: `${progress * 100}%`,
-              backgroundColor: progress === 1 ? completedColor : watchingColor,
+              backgroundColor: titleAccentColor,
             }}
           />
         </View>
@@ -165,7 +164,7 @@ export function SeasonAccordion({
               onPress={() => watchSeason.mutate({ id: season.id })}
               className="mx-4 mb-2 flex-row items-center justify-center rounded-lg bg-secondary py-2"
             >
-              <Text className="font-sans-medium text-primary text-xs">
+              <Text className="font-sans-medium text-title-accent text-xs">
                 Mark All Watched
               </Text>
             </Pressable>

apps/native/src/components/titles/status-action-button.tsx

@@ -29,7 +29,7 @@ export function StatusActionButton({
     { status: "completed", label: "Completed", Icon: IconCircleCheck },
   ];
 
-  const primaryColor = useCSSVariable("--color-primary") as string;
+  const primaryColor = useCSSVariable("--color-title-accent") as string;
   const mutedFgColor = useCSSVariable("--color-muted-foreground") as string;
 
   return (
@@ -46,13 +46,13 @@ export function StatusActionButton({
             disabled={isPending}
             className={`flex-row items-center gap-1.5 rounded-full border px-3 py-2 ${
               isActive
-                ? "border-primary bg-primary/10"
+                ? "border-title-accent bg-title-accent/10"
                 : "border-border bg-card"
             }`}
           >
             <Icon size={14} color={isActive ? primaryColor : mutedFgColor} />
             <Text
-              className={`font-sans-medium text-xs ${isActive ? "text-primary" : "text-foreground"}`}
+              className={`font-sans-medium text-xs ${isActive ? "text-title-accent" : "text-foreground"}`}
             >
               {label}
             </Text>

apps/native/src/components/ui/star-rating.tsx

@@ -8,6 +8,7 @@ interface StarRatingProps {
   onRate?: (rating: number) => void;
   size?: number;
   interactive?: boolean;
+  accentColor?: string;
 }
 
 export function StarRating({
@@ -15,12 +16,15 @@ export function StarRating({
   onRate,
   size = 22,
   interactive = true,
+  accentColor,
 }: StarRatingProps) {
-  const [primary, mutedForeground] = useCSSVariable([
+  const [defaultPrimary, mutedForeground] = useCSSVariable([
     "--color-primary",
     "--color-muted-foreground",
   ]) as [string, string];
 
+  const primary = accentColor ?? defaultPrimary;
+
   return (
     <View className="flex-row items-center gap-1">
       {[1, 2, 3, 4, 5].map((star) => (

apps/native/src/global.css

@@ -32,6 +32,8 @@
   --color-status-watchlist: oklch(0.72 0.12 220);
   --color-status-watching: oklch(0.78 0.14 65);
   --color-status-completed: oklch(0.75 0.14 155);
+  --color-title-accent: oklch(0.8 0.14 65);
+  --color-title-accent-foreground: oklch(0.13 0.006 55);
 
   --radius: 0.625rem;
 }

apps/native/src/hooks/use-title-theme.ts

@@ -1,6 +1,5 @@
 import type { ColorPalette } from "@sofa/api/schemas";
-import { useFocusEffect } from "expo-router";
-import { useCallback } from "react";
+import { useEffect } from "react";
 import { Uniwind } from "uniwind";
 
 function hexToRelativeLuminance(hex: string): number {
@@ -12,38 +11,19 @@ function hexToRelativeLuminance(hex: string): number {
   return 0.2126 * toLinear(r) + 0.7152 * toLinear(g) + 0.0722 * toLinear(b);
 }
 
-const DEFAULTS: Record<string, string> = {
-  "--color-primary": "oklch(0.8 0.14 65)",
-  "--color-ring": "oklch(0.8 0.14 65)",
-  "--color-primary-foreground": "oklch(0.13 0.006 55)",
-  "--color-status-watching": "oklch(0.78 0.14 65)",
-};
-
-function applyPalette(vibrant: string): void {
-  const luminance = hexToRelativeLuminance(vibrant);
-  const foreground =
-    luminance > 0.3 ? "oklch(0.13 0.006 55)" : "oklch(0.93 0.015 80)";
-
-  Uniwind.updateCSSVariables("dark", {
-    "--color-primary": vibrant,
-    "--color-ring": vibrant,
-    "--color-primary-foreground": foreground,
-    "--color-status-watching": vibrant,
-  });
-}
-
 export function useTitleTheme(palette: ColorPalette | null | undefined): void {
   const vibrant = palette?.vibrant ?? null;
 
-  useFocusEffect(
-    useCallback(() => {
-      if (vibrant) {
-        applyPalette(vibrant);
-      }
+  useEffect(() => {
+    if (!vibrant) return;
 
-      return () => {
-        Uniwind.updateCSSVariables("dark", DEFAULTS);
-      };
-    }, [vibrant]),
-  );
+    const luminance = hexToRelativeLuminance(vibrant);
+    const foreground =
+      luminance > 0.3 ? "oklch(0.13 0.006 55)" : "oklch(0.93 0.015 80)";
+
+    Uniwind.updateCSSVariables("dark", {
+      "--color-title-accent": vibrant,
+      "--color-title-accent-foreground": foreground,
+    });
+  }, [vibrant]);
 }