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--- a/expo-tailwind-setup/.skillshare-meta.json
+++ b/expo-tailwind-setup/.skillshare-meta.json
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+{
+  "source": "github.com/expo/skills/tree/main/plugins/expo-app-design/skills/expo-tailwind-setup",
+  "type": "github-subdir",
+  "installed_at": "2026-01-30T02:27:29.274573058Z",
+  "repo_url": "https://github.com/expo/skills.git",
+  "subdir": "plugins/expo-app-design/skills/expo-tailwind-setup",
+  "version": "b631a60"
+}
--- a/expo-tailwind-setup/SKILL.md
+++ b/expo-tailwind-setup/SKILL.md
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+---
+name: expo-tailwind-setup
+description: Set up Tailwind CSS v4 in Expo with react-native-css and NativeWind v5 for universal styling
+version: 1.0.0
+license: MIT
+---
+
+# Tailwind CSS Setup for Expo with react-native-css
+
+This guide covers setting up Tailwind CSS v4 in Expo using react-native-css and NativeWind v5 for universal styling across iOS, Android, and Web.
+
+## Overview
+
+This setup uses:
+
+- **Tailwind CSS v4** - Modern CSS-first configuration
+- **react-native-css** - CSS runtime for React Native
+- **NativeWind v5** - Metro transformer for Tailwind in React Native
+- **@tailwindcss/postcss** - PostCSS plugin for Tailwind v4
+
+## Installation
+
+```bash
+# Install dependencies
+npx expo install tailwindcss@^4 nativewind@5.0.0-preview.2 react-native-css@0.0.0-nightly.5ce6396 @tailwindcss/postcss tailwind-merge clsx
+```
+
+Add resolutions for lightningcss compatibility:
+
+```json
+// package.json
+{
+  "resolutions": {
+    "lightningcss": "1.30.1"
+  }
+}
+```
+
+- autoprefixer is not needed in Expo because of lightningcss
+- postcss is included in expo by default
+
+## Configuration Files
+
+### Metro Config
+
+Create or update `metro.config.js`:
+
+```js
+// metro.config.js
+const { getDefaultConfig } = require("expo/metro-config");
+const { withNativewind } = require("nativewind/metro");
+
+/** @type {import('expo/metro-config').MetroConfig} */
+const config = getDefaultConfig(__dirname);
+
+module.exports = withNativewind(config, {
+  // inline variables break PlatformColor in CSS variables
+  inlineVariables: false,
+  // We add className support manually
+  globalClassNamePolyfill: false,
+});
+```
+
+### PostCSS Config
+
+Create `postcss.config.mjs`:
+
+```js
+// postcss.config.mjs
+export default {
+  plugins: {
+    "@tailwindcss/postcss": {},
+  },
+};
+```
+
+### Global CSS
+
+Create `src/global.css`:
+
+```css
+@import "tailwindcss/theme.css" layer(theme);
+@import "tailwindcss/preflight.css" layer(base);
+@import "tailwindcss/utilities.css";
+
+/* Platform-specific font families */
+@media android {
+  :root {
+    --font-mono: monospace;
+    --font-rounded: normal;
+    --font-serif: serif;
+    --font-sans: normal;
+  }
+}
+
+@media ios {
+  :root {
+    --font-mono: ui-monospace;
+    --font-serif: ui-serif;
+    --font-sans: system-ui;
+    --font-rounded: ui-rounded;
+  }
+}
+```
+
+## IMPORTANT: No Babel Config Needed
+
+With Tailwind v4 and NativeWind v5, you do NOT need a babel.config.js for Tailwind. Remove any NativeWind babel presets if present:
+
+```js
+// DELETE babel.config.js if it only contains NativeWind config
+// The following is NO LONGER needed:
+// module.exports = function (api) {
+//   api.cache(true);
+//   return {
+//     presets: [
+//       ["babel-preset-expo", { jsxImportSource: "nativewind" }],
+//       "nativewind/babel",
+//     ],
+//   };
+// };
+```
+
+## CSS Component Wrappers
+
+Since react-native-css requires explicit CSS element wrapping, create reusable components:
+
+### Main Components (`src/tw/index.tsx`)
+
+```tsx
+import {
+  useCssElement,
+  useNativeVariable as useFunctionalVariable,
+} from "react-native-css";
+
+import { Link as RouterLink } from "expo-router";
+import Animated from "react-native-reanimated";
+import React from "react";
+import {
+  View as RNView,
+  Text as RNText,
+  Pressable as RNPressable,
+  ScrollView as RNScrollView,
+  TouchableHighlight as RNTouchableHighlight,
+  TextInput as RNTextInput,
+  StyleSheet,
+} from "react-native";
+
+// CSS-enabled Link
+export const Link = (
+  props: React.ComponentProps<typeof RouterLink> & { className?: string }
+) => {
+  return useCssElement(RouterLink, props, { className: "style" });
+};
+
+Link.Trigger = RouterLink.Trigger;
+Link.Menu = RouterLink.Menu;
+Link.MenuAction = RouterLink.MenuAction;
+Link.Preview = RouterLink.Preview;
+
+// CSS Variable hook
+export const useCSSVariable =
+  process.env.EXPO_OS !== "web"
+    ? useFunctionalVariable
+    : (variable: string) => `var(${variable})`;
+
+// View
+export type ViewProps = React.ComponentProps<typeof RNView> & {
+  className?: string;
+};
+
+export const View = (props: ViewProps) => {
+  return useCssElement(RNView, props, { className: "style" });
+};
+View.displayName = "CSS(View)";
+
+// Text
+export const Text = (
+  props: React.ComponentProps<typeof RNText> & { className?: string }
+) => {
+  return useCssElement(RNText, props, { className: "style" });
+};
+Text.displayName = "CSS(Text)";
+
+// ScrollView
+export const ScrollView = (
+  props: React.ComponentProps<typeof RNScrollView> & {
+    className?: string;
+    contentContainerClassName?: string;
+  }
+) => {
+  return useCssElement(RNScrollView, props, {
+    className: "style",
+    contentContainerClassName: "contentContainerStyle",
+  });
+};
+ScrollView.displayName = "CSS(ScrollView)";
+
+// Pressable
+export const Pressable = (
+  props: React.ComponentProps<typeof RNPressable> & { className?: string }
+) => {
+  return useCssElement(RNPressable, props, { className: "style" });
+};
+Pressable.displayName = "CSS(Pressable)";
+
+// TextInput
+export const TextInput = (
+  props: React.ComponentProps<typeof RNTextInput> & { className?: string }
+) => {
+  return useCssElement(RNTextInput, props, { className: "style" });
+};
+TextInput.displayName = "CSS(TextInput)";
+
+// AnimatedScrollView
+export const AnimatedScrollView = (
+  props: React.ComponentProps<typeof Animated.ScrollView> & {
+    className?: string;
+    contentClassName?: string;
+    contentContainerClassName?: string;
+  }
+) => {
+  return useCssElement(Animated.ScrollView, props, {
+    className: "style",
+    contentClassName: "contentContainerStyle",
+    contentContainerClassName: "contentContainerStyle",
+  });
+};
+
+// TouchableHighlight with underlayColor extraction
+function XXTouchableHighlight(
+  props: React.ComponentProps<typeof RNTouchableHighlight>
+) {
+  const { underlayColor, ...style } = StyleSheet.flatten(props.style) || {};
+  return (
+    <RNTouchableHighlight
+      underlayColor={underlayColor}
+      {...props}
+      style={style}
+    />
+  );
+}
+
+export const TouchableHighlight = (
+  props: React.ComponentProps<typeof RNTouchableHighlight>
+) => {
+  return useCssElement(XXTouchableHighlight, props, { className: "style" });
+};
+TouchableHighlight.displayName = "CSS(TouchableHighlight)";
+```
+
+### Image Component (`src/tw/image.tsx`)
+
+```tsx
+import { useCssElement } from "react-native-css";
+import React from "react";
+import { StyleSheet } from "react-native";
+import Animated from "react-native-reanimated";
+import { Image as RNImage } from "expo-image";
+
+const AnimatedExpoImage = Animated.createAnimatedComponent(RNImage);
+
+export type ImageProps = React.ComponentProps<typeof Image>;
+
+function CSSImage(props: React.ComponentProps<typeof AnimatedExpoImage>) {
+  // @ts-expect-error: Remap objectFit style to contentFit property
+  const { objectFit, objectPosition, ...style } =
+    StyleSheet.flatten(props.style) || {};
+
+  return (
+    <AnimatedExpoImage
+      contentFit={objectFit}
+      contentPosition={objectPosition}
+      {...props}
+      source={
+        typeof props.source === "string" ? { uri: props.source } : props.source
+      }
+      // @ts-expect-error: Style is remapped above
+      style={style}
+    />
+  );
+}
+
+export const Image = (
+  props: React.ComponentProps<typeof CSSImage> & { className?: string }
+) => {
+  return useCssElement(CSSImage, props, { className: "style" });
+};
+
+Image.displayName = "CSS(Image)";
+```
+
+### Animated Components (`src/tw/animated.tsx`)
+
+```tsx
+import * as TW from "./index";
+import RNAnimated from "react-native-reanimated";
+
+export const Animated = {
+  ...RNAnimated,
+  View: RNAnimated.createAnimatedComponent(TW.View),
+};
+```
+
+## Usage
+
+Import CSS-wrapped components from your tw directory:
+
+```tsx
+import { View, Text, ScrollView, Image } from "@/tw";
+
+export default function MyScreen() {
+  return (
+    <ScrollView className="flex-1 bg-white">
+      <View className="p-4 gap-4">
+        <Text className="text-xl font-bold text-gray-900">Hello Tailwind!</Text>
+        <Image
+          className="w-full h-48 rounded-lg object-cover"
+          source={{ uri: "https://example.com/image.jpg" }}
+        />
+      </View>
+    </ScrollView>
+  );
+}
+```
+
+## Custom Theme Variables
+
+Add custom theme variables in your global.css using `@theme`:
+
+```css
+@layer theme {
+  @theme {
+    /* Custom fonts */
+    --font-rounded: "SF Pro Rounded", sans-serif;
+
+    /* Custom line heights */
+    --text-xs--line-height: calc(1em / 0.75);
+    --text-sm--line-height: calc(1.25em / 0.875);
+    --text-base--line-height: calc(1.5em / 1);
+
+    /* Custom leading scales */
+    --leading-tight: 1.25em;
+    --leading-snug: 1.375em;
+    --leading-normal: 1.5em;
+  }
+}
+```
+
+## Platform-Specific Styles
+
+Use platform media queries for platform-specific styling:
+
+```css
+@media ios {
+  :root {
+    --font-sans: system-ui;
+    --font-rounded: ui-rounded;
+  }
+}
+
+@media android {
+  :root {
+    --font-sans: normal;
+    --font-rounded: normal;
+  }
+}
+```
+
+## Apple System Colors with CSS Variables
+
+Create a CSS file for Apple semantic colors:
+
+```css
+/* src/css/sf.css */
+@layer base {
+  html {
+    color-scheme: light;
+  }
+}
+
+:root {
+  /* Accent colors with light/dark mode */
+  --sf-blue: light-dark(rgb(0 122 255), rgb(10 132 255));
+  --sf-green: light-dark(rgb(52 199 89), rgb(48 209 89));
+  --sf-red: light-dark(rgb(255 59 48), rgb(255 69 58));
+
+  /* Gray scales */
+  --sf-gray: light-dark(rgb(142 142 147), rgb(142 142 147));
+  --sf-gray-2: light-dark(rgb(174 174 178), rgb(99 99 102));
+
+  /* Text colors */
+  --sf-text: light-dark(rgb(0 0 0), rgb(255 255 255));
+  --sf-text-2: light-dark(rgb(60 60 67 / 0.6), rgb(235 235 245 / 0.6));
+
+  /* Background colors */
+  --sf-bg: light-dark(rgb(255 255 255), rgb(0 0 0));
+  --sf-bg-2: light-dark(rgb(242 242 247), rgb(28 28 30));
+}
+
+/* iOS native colors via platformColor */
+@media ios {
+  :root {
+    --sf-blue: platformColor(systemBlue);
+    --sf-green: platformColor(systemGreen);
+    --sf-red: platformColor(systemRed);
+    --sf-gray: platformColor(systemGray);
+    --sf-text: platformColor(label);
+    --sf-text-2: platformColor(secondaryLabel);
+    --sf-bg: platformColor(systemBackground);
+    --sf-bg-2: platformColor(secondarySystemBackground);
+  }
+}
+
+/* Register as Tailwind theme colors */
+@layer theme {
+  @theme {
+    --color-sf-blue: var(--sf-blue);
+    --color-sf-green: var(--sf-green);
+    --color-sf-red: var(--sf-red);
+    --color-sf-gray: var(--sf-gray);
+    --color-sf-text: var(--sf-text);
+    --color-sf-text-2: var(--sf-text-2);
+    --color-sf-bg: var(--sf-bg);
+    --color-sf-bg-2: var(--sf-bg-2);
+  }
+}
+```
+
+Then use in components:
+
+```tsx
+<Text className="text-sf-text">Primary text</Text>
+<Text className="text-sf-text-2">Secondary text</Text>
+<View className="bg-sf-bg">...</View>
+```
+
+## Using CSS Variables in JavaScript
+
+Use the `useCSSVariable` hook:
+
+```tsx
+import { useCSSVariable } from "@/tw";
+
+function MyComponent() {
+  const blue = useCSSVariable("--sf-blue");
+
+  return <View style={{ borderColor: blue }} />;
+}
+```
+
+## Key Differences from NativeWind v4 / Tailwind v3
+
+1. **No babel.config.js** - Configuration is now CSS-first
+2. **PostCSS plugin** - Uses `@tailwindcss/postcss` instead of `tailwindcss`
+3. **CSS imports** - Use `@import "tailwindcss/..."` instead of `@tailwind` directives
+4. **Theme config** - Use `@theme` in CSS instead of `tailwind.config.js`
+5. **Component wrappers** - Must wrap components with `useCssElement` for className support
+6. **Metro config** - Use `withNativewind` with different options (`inlineVariables: false`)
+
+## Troubleshooting
+
+### Styles not applying
+
+1. Ensure you have the CSS file imported in your app entry
+2. Check that components are wrapped with `useCssElement`
+3. Verify Metro config has `withNativewind` applied
+
+### Platform colors not working
+
+1. Use `platformColor()` in `@media ios` blocks
+2. Fall back to `light-dark()` for web/Android
+
+### TypeScript errors
+
+Add className to component props:
+
+```tsx
+type Props = React.ComponentProps<typeof RNView> & { className?: string };
+```