upgrade example app to tailwind 4

apps/events/package.json

@@ -41,17 +41,16 @@
   },
   "devDependencies": {
     "@biomejs/biome": "1.9.4",
+    "@tailwindcss/vite": "^4.1.5",
     "@tanstack/router-devtools": "^1.119.1",
     "@tanstack/router-plugin": "^1.119.0",
     "@types/node": "^22.15.3",
     "@types/react": "^19.1.2",
     "@types/react-dom": "^19.1.3",
     "@types/uuid": "^10.0.0",
     "@vitejs/plugin-react": "^4.4.1",
-    "autoprefixer": "^10.4.21",
     "globals": "^16.0.0",
-    "postcss": "^8.5.3",
-    "tailwindcss": "^3.4.17",
+    "tailwindcss": "^4.1.5",
     "vite-plugin-node-polyfills": "^0.23.0",
     "vite-plugin-top-level-await": "^1.5.0",
     "vite-plugin-wasm": "^3.4.1"

apps/events/src/components/ui/button.tsx

@@ -5,14 +5,14 @@ import * as React from 'react';
 import { cn } from '@/lib/utils';
 
 const buttonVariants = cva(
-  'inline-flex items-center justify-center whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50',
+  'inline-flex items-center justify-center whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-hidden focus-visible:ring-1 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50',
   {
     variants: {
       variant: {
-        default: 'bg-primary text-primary-foreground shadow hover:bg-primary/90',
-        destructive: 'bg-destructive text-destructive-foreground shadow-sm hover:bg-destructive/90',
-        outline: 'border border-input bg-background shadow-sm hover:bg-accent hover:text-accent-foreground',
-        secondary: 'bg-secondary text-secondary-foreground shadow-sm hover:bg-secondary/80',
+        default: 'bg-primary text-primary-foreground shadow-sm hover:bg-primary/90',
+        destructive: 'bg-destructive text-destructive-foreground shadow-xs hover:bg-destructive/90',
+        outline: 'border border-input bg-background shadow-xs hover:bg-accent hover:text-accent-foreground',
+        secondary: 'bg-secondary text-secondary-foreground shadow-xs hover:bg-secondary/80',
         ghost: 'hover:bg-accent hover:text-accent-foreground',
         link: 'text-primary underline-offset-4 hover:underline',
       },

apps/events/src/components/ui/card.tsx

@@ -3,7 +3,7 @@ import * as React from 'react';
 import { cn } from '@/lib/utils';
 
 const Card = React.forwardRef<HTMLDivElement, React.HTMLAttributes<HTMLDivElement>>(({ className, ...props }, ref) => (
-  <div ref={ref} className={cn('rounded-xl border bg-card text-card-foreground shadow', className)} {...props} />
+  <div ref={ref} className={cn('rounded-xl border bg-card text-card-foreground shadow-sm', className)} {...props} />
 ));
 Card.displayName = 'Card';
 

apps/events/src/components/ui/input.tsx

@@ -10,7 +10,7 @@ const Input = React.forwardRef<HTMLInputElement, InputProps>(({ className, type,
     <input
       type={type}
       className={cn(
-        'flex h-9 w-full rounded-md border border-input bg-transparent px-3 py-1 text-sm shadow-sm transition-colors file:border-0 file:bg-transparent file:text-sm file:font-medium file:text-foreground placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:cursor-not-allowed disabled:opacity-50',
+        'flex h-9 w-full rounded-md border border-input bg-transparent px-3 py-1 text-sm shadow-xs transition-colors file:border-0 file:bg-transparent file:text-sm file:font-medium file:text-foreground placeholder:text-muted-foreground focus-visible:outline-hidden focus-visible:ring-1 focus-visible:ring-ring disabled:cursor-not-allowed disabled:opacity-50',
         className,
       )}
       ref={ref}

apps/events/src/index.css

@@ -1,6 +1,69 @@
-@tailwind base;
-@tailwind components;
-@tailwind utilities;
+@import 'tailwindcss';
+
+@plugin 'tailwindcss-animate';
+
+@source '../../../packages/hypergraph-react/src/**/*.{js,ts,jsx,tsx}';
+
+@custom-variant dark (&:is(.dark *));
+
+@theme {
+  --radius-lg: var(--radius);
+  --radius-md: calc(var(--radius) - 2px);
+  --radius-sm: calc(var(--radius) - 4px);
+
+  --color-background: hsl(var(--background));
+  --color-foreground: hsl(var(--foreground));
+
+  --color-card: hsl(var(--card));
+  --color-card-foreground: hsl(var(--card-foreground));
+
+  --color-popover: hsl(var(--popover));
+  --color-popover-foreground: hsl(var(--popover-foreground));
+
+  --color-primary: hsl(var(--primary));
+  --color-primary-foreground: hsl(var(--primary-foreground));
+
+  --color-secondary: hsl(var(--secondary));
+  --color-secondary-foreground: hsl(var(--secondary-foreground));
+
+  --color-muted: hsl(var(--muted));
+  --color-muted-foreground: hsl(var(--muted-foreground));
+
+  --color-accent: hsl(var(--accent));
+  --color-accent-foreground: hsl(var(--accent-foreground));
+
+  --color-destructive: hsl(var(--destructive));
+  --color-destructive-foreground: hsl(var(--destructive-foreground));
+
+  --color-border: hsl(var(--border));
+  --color-input: hsl(var(--input));
+  --color-ring: hsl(var(--ring));
+
+  --color-chart-1: hsl(var(--chart-1));
+  --color-chart-2: hsl(var(--chart-2));
+  --color-chart-3: hsl(var(--chart-3));
+  --color-chart-4: hsl(var(--chart-4));
+  --color-chart-5: hsl(var(--chart-5));
+}
+
+/*
+  The default border color has changed to `currentcolor` in Tailwind CSS v4,
+  so we've added these compatibility styles to make sure everything still
+  looks the same as it did with Tailwind CSS v3.
+
+  If we ever want to remove these styles, we need to add an explicit border
+  color utility to any element that depends on these defaults.
+*/
+@layer base {
+  *,
+  ::after,
+  ::before,
+  ::backdrop,
+  ::file-selector-button {
+    border-color: var(--color-gray-200, currentcolor);
+  }
+}
+
 @layer base {
   :root {
     --background: 0 0% 100%;

apps/events/src/routes/account-inbox/$inboxId.tsx

@@ -33,7 +33,7 @@ function RouteComponent() {
       <h1 className="text-2xl font-bold mb-6">Inbox Messages</h1>
       <div className="space-y-4">
         {messages.map((message) => (
-          <div key={message.id} className="bg-card rounded-lg p-4 shadow-sm border">
+          <div key={message.id} className="bg-card rounded-lg p-4 shadow-xs border">
             <div className="text-lg mb-2">{message.plaintext}</div>
             <div className="space-y-1 text-sm text-muted-foreground">
               <div className="message-time">{new Date(message.createdAt).toLocaleString()}</div>

apps/events/src/routes/index.tsx

@@ -42,7 +42,7 @@ function Index() {
   }
 
   return (
-    <div className="flex flex-col gap-4 max-w-screen-sm mx-auto py-8">
+    <div className="flex flex-col gap-4 max-w-(--breakpoint-sm) mx-auto py-8">
       <h2 className="text-lg font-bold">Invitations</h2>
       {invitations.length === 0 && <div>No invitations</div>}
       <ul className="text-xs">

apps/events/src/routes/playground.lazy.tsx

@@ -10,7 +10,7 @@ export const Route = createLazyFileRoute('/playground')({
 function RouteComponent() {
   return (
     <HypergraphSpaceProvider space="BDuZwkjCg3nPWMDshoYtpS" mapping={mapping}>
-      <div className="flex flex-col gap-4 max-w-screen-sm mx-auto py-8">
+      <div className="flex flex-col gap-4 max-w-(--breakpoint-sm) mx-auto py-8">
         <h1 className="text-2xl font-bold">Playground</h1>
         <Playground />
       </div>

apps/events/src/routes/settings/export-wallet.tsx

@@ -7,7 +7,7 @@ export const Route = createFileRoute('/settings/export-wallet')({
 
 function RouteComponent() {
   return (
-    <div className="flex flex-col gap-4 max-w-screen-sm mx-auto py-8">
+    <div className="flex flex-col gap-4 max-w-(--breakpoint-sm) mx-auto py-8">
       <ExportWallet />
     </div>
   );

apps/events/src/routes/space/$spaceId.tsx

@@ -10,7 +10,7 @@ function RouteComponent() {
   return (
     <div className="flex flex-col h-screen">
       <div className="border-b border-gray-200">
-        <nav className="flex gap-4 max-w-screen-sm mx-auto py-8">
+        <nav className="flex gap-4 max-w-(--breakpoint-sm) mx-auto py-8">
           <Link
             to={'/space/$spaceId'}
             params={{ spaceId }}

apps/events/src/routes/space/$spaceId/chat.tsx

@@ -31,7 +31,7 @@ function RouteComponent() {
   }
 
   return (
-    <div className="flex flex-col gap-4 max-w-screen-sm mx-auto py-8">
+    <div className="flex flex-col gap-4 max-w-(--breakpoint-sm) mx-auto py-8">
       <HypergraphSpaceProvider space={spaceId} mapping={mapping}>
         <SpaceChat spaceId={spaceId} />
       </HypergraphSpaceProvider>

apps/events/src/routes/space/$spaceId/index.tsx

@@ -39,7 +39,7 @@ function Space() {
   }
 
   return (
-    <div className="flex flex-col gap-4 max-w-screen-sm mx-auto py-8">
+    <div className="flex flex-col gap-4 max-w-(--breakpoint-sm) mx-auto py-8">
       <HypergraphSpaceProvider space={spaceId} mapping={mapping}>
         <Users />
         <Todos />

apps/events/src/routes/space/$spaceId/playground.tsx

@@ -31,7 +31,7 @@ function PlaygroundRouteComponent() {
   }
 
   return (
-    <div className="flex flex-col gap-4 max-w-screen-sm mx-auto py-8">
+    <div className="flex flex-col gap-4 max-w-(--breakpoint-sm) mx-auto py-8">
       <HypergraphSpaceProvider space={spaceId} mapping={mapping}>
         <TodosPublicGeo />
       </HypergraphSpaceProvider>

apps/events/src/routes/space/$spaceId/public-integration.tsx

@@ -32,7 +32,7 @@ function PublicIntegration() {
   }
 
   return (
-    <div className="flex flex-col gap-4 max-w-screen-sm mx-auto py-8">
+    <div className="flex flex-col gap-4 max-w-(--breakpoint-sm) mx-auto py-8">
       <HypergraphSpaceProvider space={spaceId} mapping={mapping}>
         <CreatePropertiesAndTypes />
         <Todos2 />

apps/events/src/routes/space/$spaceId/users.tsx

@@ -32,7 +32,7 @@ function UsersRouteComponent() {
   }
 
   return (
-    <div className="flex flex-col gap-4 max-w-screen-sm mx-auto py-8">
+    <div className="flex flex-col gap-4 max-w-(--breakpoint-sm) mx-auto py-8">
       <HypergraphSpaceProvider space={spaceId} mapping={mapping}>
         <UsersMerged />
         <UsersLocal />

apps/events/vite.config.ts

@@ -1,6 +1,7 @@
-import path from 'node:path';
+import tailwindcss from '@tailwindcss/vite';
 import { TanStackRouterVite } from '@tanstack/router-plugin/vite';
 import react from '@vitejs/plugin-react';
+import path from 'node:path';
 import { defineConfig } from 'vite';
 import { nodePolyfills } from 'vite-plugin-node-polyfills';
 import topLevelAwait from 'vite-plugin-top-level-await';
@@ -19,6 +20,7 @@ export default defineConfig({
         global: true,
       },
     }),
+    tailwindcss(),
   ],
   resolve: {
     alias: {