diff --git a/apps/web/components.json b/apps/web/components.json
new file mode 100644
index 0000000..1d82d92
--- /dev/null
+++ b/apps/web/components.json
@@ -0,0 +1,21 @@
+{
+  "$schema": "https://ui.shadcn.com/schema.json",
+  "style": "new-york",
+  "rsc": true,
+  "tsx": true,
+  "tailwind": {
+    "config": "tailwind.config.ts",
+    "css": "src/styles/globals.css",
+    "baseColor": "slate",
+    "cssVariables": true,
+    "prefix": ""
+  },
+  "aliases": {
+    "components": "@/components",
+    "utils": "@/lib/utils",
+    "ui": "@/components/ui",
+    "lib": "@/lib",
+    "hooks": "@/hooks"
+  },
+  "iconLibrary": "lucide"
+}
diff --git a/apps/web/package.json b/apps/web/package.json
index f7cfb42..8b1b9f1 100644
--- a/apps/web/package.json
+++ b/apps/web/package.json
@@ -11,14 +11,23 @@
     "test:e2e": "playwright test"
   },
   "dependencies": {
+    "@hookform/resolvers": "^3.9.0",
     "@ketopath/auth": "workspace:*",
     "@ketopath/shared": "workspace:*",
     "@ketopath/ui": "workspace:*",
+    "@radix-ui/react-label": "^2.1.0",
+    "@radix-ui/react-slot": "^1.1.0",
     "better-auth": "^1.0.21",
+    "class-variance-authority": "^0.7.0",
+    "clsx": "^2.1.1",
+    "lucide-react": "^0.439.0",
     "next": "^14.2.5",
     "next-intl": "^3.17.2",
     "react": "^18.3.1",
-    "react-dom": "^18.3.1"
+    "react-dom": "^18.3.1",
+    "react-hook-form": "^7.53.0",
+    "tailwind-merge": "^2.5.2",
+    "tailwindcss-animate": "^1.0.7"
   },
   "devDependencies": {
     "@ketopath/eslint-config": "workspace:*",
diff --git a/apps/web/src/app/[locale]/(auth)/sign-in/page.tsx b/apps/web/src/app/[locale]/(auth)/sign-in/page.tsx
index 1d18071..3d7ffa4 100644
--- a/apps/web/src/app/[locale]/(auth)/sign-in/page.tsx
+++ b/apps/web/src/app/[locale]/(auth)/sign-in/page.tsx
@@ -2,6 +2,8 @@ import { enabledSocialProviders } from '@ketopath/auth';
 import { useTranslations } from 'next-intl';
 import { setRequestLocale } from 'next-intl/server';
 
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
+
 import { SignInForm } from './sign-in-form';
 
 export default function SignInPage({ params: { locale } }: { params: { locale: string } }) {
@@ -9,12 +11,16 @@ export default function SignInPage({ params: { locale } }: { params: { locale: s
   const t = useTranslations('Auth.SignIn');
 
   return (
-    <main className="mx-auto flex min-h-screen max-w-md flex-col justify-center gap-8 px-6 py-16">
-      <header className="space-y-2">
-        <h1 className="text-3xl font-bold tracking-tight">{t('title')}</h1>
-        <p className="text-sm text-slate-600">{t('subtitle')}</p>
-      </header>
-      <SignInForm googleEnabled={enabledSocialProviders.includes('google')} />
+    <main className="mx-auto flex min-h-screen max-w-md flex-col justify-center px-6 py-16">
+      <Card>
+        <CardHeader>
+          <CardTitle>{t('title')}</CardTitle>
+          <CardDescription>{t('subtitle')}</CardDescription>
+        </CardHeader>
+        <CardContent>
+          <SignInForm googleEnabled={enabledSocialProviders.includes('google')} />
+        </CardContent>
+      </Card>
     </main>
   );
 }
diff --git a/apps/web/src/app/[locale]/(auth)/sign-in/sign-in-form.tsx b/apps/web/src/app/[locale]/(auth)/sign-in/sign-in-form.tsx
index b3e42c2..b73e219 100644
--- a/apps/web/src/app/[locale]/(auth)/sign-in/sign-in-form.tsx
+++ b/apps/web/src/app/[locale]/(auth)/sign-in/sign-in-form.tsx
@@ -5,6 +5,9 @@ import { useRouter } from 'next/navigation';
 import { useTranslations } from 'next-intl';
 import { useState, type FormEvent } from 'react';
 
+import { Button } from '@/components/ui/button';
+import { Input } from '@/components/ui/input';
+import { Label } from '@/components/ui/label';
 import { authClient } from '@/lib/auth-client';
 
 export function SignInForm({ googleEnabled }: { googleEnabled: boolean }) {
@@ -46,67 +49,59 @@ export function SignInForm({ googleEnabled }: { googleEnabled: boolean }) {
   return (
     <div className="space-y-6">
       <form onSubmit={handleSubmit} className="space-y-4" noValidate>
-        <label className="block space-y-1">
-          <span className="text-sm font-medium text-slate-700">{t('emailLabel')}</span>
-          <input
+        <div className="space-y-1.5">
+          <Label htmlFor="email">{t('emailLabel')}</Label>
+          <Input
+            id="email"
             type="email"
             required
             autoComplete="email"
             value={email}
             onChange={(e) => setEmail(e.target.value)}
-            className="w-full rounded-md border border-slate-300 px-3 py-2 text-sm shadow-sm focus:border-emerald-500 focus:outline-none focus:ring-1 focus:ring-emerald-500"
           />
-        </label>
-        <label className="block space-y-1">
-          <span className="text-sm font-medium text-slate-700">{t('passwordLabel')}</span>
-          <input
+        </div>
+        <div className="space-y-1.5">
+          <Label htmlFor="password">{t('passwordLabel')}</Label>
+          <Input
+            id="password"
             type="password"
             required
             autoComplete="current-password"
             minLength={8}
             value={password}
             onChange={(e) => setPassword(e.target.value)}
-            className="w-full rounded-md border border-slate-300 px-3 py-2 text-sm shadow-sm focus:border-emerald-500 focus:outline-none focus:ring-1 focus:ring-emerald-500"
           />
-        </label>
+        </div>
         {error ? (
-          <p role="alert" className="text-sm text-red-600">
+          <p role="alert" className="text-destructive text-sm">
             {error}
           </p>
         ) : null}
-        <button
-          type="submit"
-          disabled={pending}
-          className="w-full rounded-md bg-emerald-600 px-5 py-2.5 text-sm font-medium text-white shadow-sm hover:bg-emerald-700 disabled:opacity-60"
-        >
+        <Button type="submit" disabled={pending} className="w-full">
           {pending ? t('submitting') : t('submit')}
-        </button>
+        </Button>
       </form>
       {googleEnabled ? (
         <>
           <div className="relative">
             <div className="absolute inset-0 flex items-center">
-              <div className="w-full border-t border-slate-200" />
+              <div className="border-border w-full border-t" />
             </div>
             <div className="relative flex justify-center">
-              <span className="bg-white px-2 text-xs uppercase tracking-wider text-slate-500">
+              <span className="bg-background text-muted-foreground px-2 text-xs uppercase tracking-wider">
                 {t('or')}
               </span>
             </div>
           </div>
-          <button
-            type="button"
-            onClick={handleGoogle}
-            className="w-full rounded-md border border-slate-300 bg-white px-5 py-2.5 text-sm font-medium text-slate-700 shadow-sm hover:bg-slate-50"
-          >
+          <Button type="button" variant="outline" onClick={handleGoogle} className="w-full">
             {t('google')}
-          </button>
+          </Button>
         </>
       ) : null}
-      <p className="text-center text-sm text-slate-600">
+      <p className="text-muted-foreground text-center text-sm">
         {t.rich('noAccount', {
           link: (chunks) => (
-            <Link href="/sign-up" className="font-medium text-emerald-700 hover:underline">
+            <Link href="/sign-up" className="text-primary font-medium hover:underline">
               {chunks}
             </Link>
           ),
diff --git a/apps/web/src/app/[locale]/(auth)/sign-up/page.tsx b/apps/web/src/app/[locale]/(auth)/sign-up/page.tsx
index 0db8d16..68e977d 100644
--- a/apps/web/src/app/[locale]/(auth)/sign-up/page.tsx
+++ b/apps/web/src/app/[locale]/(auth)/sign-up/page.tsx
@@ -2,6 +2,15 @@ import { enabledSocialProviders } from '@ketopath/auth';
 import { useTranslations } from 'next-intl';
 import { setRequestLocale } from 'next-intl/server';
 
+import {
+  Card,
+  CardContent,
+  CardDescription,
+  CardFooter,
+  CardHeader,
+  CardTitle,
+} from '@/components/ui/card';
+
 import { SignUpForm } from './sign-up-form';
 
 export default function SignUpPage({ params: { locale } }: { params: { locale: string } }) {
@@ -9,13 +18,19 @@ export default function SignUpPage({ params: { locale } }: { params: { locale: s
   const t = useTranslations('Auth.SignUp');
 
   return (
-    <main className="mx-auto flex min-h-screen max-w-md flex-col justify-center gap-8 px-6 py-16">
-      <header className="space-y-2">
-        <h1 className="text-3xl font-bold tracking-tight">{t('title')}</h1>
-        <p className="text-sm text-slate-600">{t('subtitle')}</p>
-      </header>
-      <SignUpForm googleEnabled={enabledSocialProviders.includes('google')} />
-      <p className="text-xs text-slate-500">{t('disclaimer')}</p>
+    <main className="mx-auto flex min-h-screen max-w-md flex-col justify-center px-6 py-16">
+      <Card>
+        <CardHeader>
+          <CardTitle>{t('title')}</CardTitle>
+          <CardDescription>{t('subtitle')}</CardDescription>
+        </CardHeader>
+        <CardContent>
+          <SignUpForm googleEnabled={enabledSocialProviders.includes('google')} />
+        </CardContent>
+        <CardFooter>
+          <p className="text-muted-foreground text-xs">{t('disclaimer')}</p>
+        </CardFooter>
+      </Card>
     </main>
   );
 }
diff --git a/apps/web/src/app/[locale]/(auth)/sign-up/sign-up-form.tsx b/apps/web/src/app/[locale]/(auth)/sign-up/sign-up-form.tsx
index 14afdbb..75bd5b2 100644
--- a/apps/web/src/app/[locale]/(auth)/sign-up/sign-up-form.tsx
+++ b/apps/web/src/app/[locale]/(auth)/sign-up/sign-up-form.tsx
@@ -5,6 +5,9 @@ import { useRouter } from 'next/navigation';
 import { useTranslations } from 'next-intl';
 import { useState, type FormEvent } from 'react';
 
+import { Button } from '@/components/ui/button';
+import { Input } from '@/components/ui/input';
+import { Label } from '@/components/ui/label';
 import { authClient } from '@/lib/auth-client';
 
 export function SignUpForm({ googleEnabled }: { googleEnabled: boolean }) {
@@ -47,79 +50,71 @@ export function SignUpForm({ googleEnabled }: { googleEnabled: boolean }) {
   return (
     <div className="space-y-6">
       <form onSubmit={handleSubmit} className="space-y-4" noValidate>
-        <label className="block space-y-1">
-          <span className="text-sm font-medium text-slate-700">{t('nameLabel')}</span>
-          <input
+        <div className="space-y-1.5">
+          <Label htmlFor="name">{t('nameLabel')}</Label>
+          <Input
+            id="name"
             type="text"
             required
             autoComplete="name"
             value={name}
             onChange={(e) => setName(e.target.value)}
-            className="w-full rounded-md border border-slate-300 px-3 py-2 text-sm shadow-sm focus:border-emerald-500 focus:outline-none focus:ring-1 focus:ring-emerald-500"
           />
-        </label>
-        <label className="block space-y-1">
-          <span className="text-sm font-medium text-slate-700">{t('emailLabel')}</span>
-          <input
+        </div>
+        <div className="space-y-1.5">
+          <Label htmlFor="email">{t('emailLabel')}</Label>
+          <Input
+            id="email"
             type="email"
             required
             autoComplete="email"
             value={email}
             onChange={(e) => setEmail(e.target.value)}
-            className="w-full rounded-md border border-slate-300 px-3 py-2 text-sm shadow-sm focus:border-emerald-500 focus:outline-none focus:ring-1 focus:ring-emerald-500"
           />
-        </label>
-        <label className="block space-y-1">
-          <span className="text-sm font-medium text-slate-700">{t('passwordLabel')}</span>
-          <input
+        </div>
+        <div className="space-y-1.5">
+          <Label htmlFor="password">{t('passwordLabel')}</Label>
+          <Input
+            id="password"
             type="password"
             required
             autoComplete="new-password"
             minLength={8}
             value={password}
             onChange={(e) => setPassword(e.target.value)}
-            className="w-full rounded-md border border-slate-300 px-3 py-2 text-sm shadow-sm focus:border-emerald-500 focus:outline-none focus:ring-1 focus:ring-emerald-500"
           />
-          <span className="block text-xs text-slate-500">{t('passwordHint')}</span>
-        </label>
+          <p className="text-muted-foreground text-xs">{t('passwordHint')}</p>
+        </div>
         {error ? (
-          <p role="alert" className="text-sm text-red-600">
+          <p role="alert" className="text-destructive text-sm">
             {error}
           </p>
         ) : null}
-        <button
-          type="submit"
-          disabled={pending}
-          className="w-full rounded-md bg-emerald-600 px-5 py-2.5 text-sm font-medium text-white shadow-sm hover:bg-emerald-700 disabled:opacity-60"
-        >
+        <Button type="submit" disabled={pending} className="w-full">
           {pending ? t('submitting') : t('submit')}
-        </button>
+        </Button>
       </form>
       {googleEnabled ? (
         <>
           <div className="relative">
             <div className="absolute inset-0 flex items-center">
-              <div className="w-full border-t border-slate-200" />
+              <div className="border-border w-full border-t" />
             </div>
             <div className="relative flex justify-center">
-              <span className="bg-white px-2 text-xs uppercase tracking-wider text-slate-500">
+              <span className="bg-background text-muted-foreground px-2 text-xs uppercase tracking-wider">
                 {t('or')}
               </span>
             </div>
           </div>
-          <button
-            type="button"
-            onClick={handleGoogle}
-            className="w-full rounded-md border border-slate-300 bg-white px-5 py-2.5 text-sm font-medium text-slate-700 shadow-sm hover:bg-slate-50"
-          >
+          <Button type="button" variant="outline" onClick={handleGoogle} className="w-full">
             {t('google')}
-          </button>
+          </Button>
         </>
       ) : null}
-      <p className="text-center text-sm text-slate-600">
+      <p className="text-muted-foreground text-center text-sm">
         {t.rich('haveAccount', {
           link: (chunks) => (
-            <Link href="/sign-in" className="font-medium text-emerald-700 hover:underline">
+            <Link href="/sign-in" className="text-primary font-medium hover:underline">
               {chunks}
             </Link>
           ),
diff --git a/apps/web/src/app/[locale]/page.tsx b/apps/web/src/app/[locale]/page.tsx
index ea1e4a8..09a9261 100644
--- a/apps/web/src/app/[locale]/page.tsx
+++ b/apps/web/src/app/[locale]/page.tsx
@@ -2,6 +2,7 @@ import Link from 'next/link';
 import { useTranslations } from 'next-intl';
 import { setRequestLocale } from 'next-intl/server';
 
+import { Button } from '@/components/ui/button';
 import { getServerSession } from '@/lib/auth';
 
 import { SignOutButton } from './sign-out-button';
@@ -19,29 +20,23 @@ function HomeContent({ userName }: { userName: string | null }) {
   return (
     <main className="mx-auto flex min-h-screen max-w-3xl flex-col items-start justify-center gap-6 px-6 py-16">
       <h1 className="text-4xl font-bold tracking-tight sm:text-5xl">{t('title')}</h1>
-      <p className="text-lg text-slate-600">{t('tagline')}</p>
+      <p className="text-muted-foreground text-lg">{t('tagline')}</p>
       {userName ? (
         <div className="flex flex-wrap items-center gap-3">
-          <span className="text-sm text-slate-700">{t('signedInAs', { name: userName })}</span>
+          <span className="text-foreground text-sm">{t('signedInAs', { name: userName })}</span>
           <SignOutButton label={t('signOut')} />
         </div>
       ) : (
         <div className="flex flex-wrap gap-3">
-          <Link
-            href="/sign-up"
-            className="rounded-md bg-emerald-600 px-5 py-2.5 text-sm font-medium text-white shadow-sm hover:bg-emerald-700 focus:outline-none focus-visible:ring-2 focus-visible:ring-emerald-500"
-          >
-            {t('ctaPrimary')}
-          </Link>
-          <Link
-            href="/sign-in"
-            className="rounded-md border border-slate-300 bg-white px-5 py-2.5 text-sm font-medium text-slate-700 shadow-sm hover:bg-slate-50 focus:outline-none focus-visible:ring-2 focus-visible:ring-slate-400"
-          >
-            {t('ctaSecondary')}
-          </Link>
+          <Button asChild>
+            <Link href="/sign-up">{t('ctaPrimary')}</Link>
+          </Button>
+          <Button asChild variant="outline">
+            <Link href="/sign-in">{t('ctaSecondary')}</Link>
+          </Button>
         </div>
       )}
-      <p className="mt-8 text-xs text-slate-500">{t('disclaimer')}</p>
+      <p className="text-muted-foreground mt-8 text-xs">{t('disclaimer')}</p>
     </main>
   );
 }
diff --git a/apps/web/src/app/[locale]/sign-out-button.tsx b/apps/web/src/app/[locale]/sign-out-button.tsx
index 834f23e..3d9d372 100644
--- a/apps/web/src/app/[locale]/sign-out-button.tsx
+++ b/apps/web/src/app/[locale]/sign-out-button.tsx
@@ -3,6 +3,7 @@
 import { useRouter } from 'next/navigation';
 import { useState } from 'react';
 
+import { Button } from '@/components/ui/button';
 import { authClient } from '@/lib/auth-client';
 
 export function SignOutButton({ label }: { label: string }) {
@@ -17,13 +18,8 @@ export function SignOutButton({ label }: { label: string }) {
   }
 
   return (
-    <button
-      type="button"
-      onClick={handleClick}
-      disabled={pending}
-      className="rounded-md border border-slate-300 bg-white px-3 py-1.5 text-xs font-medium text-slate-700 shadow-sm hover:bg-slate-50 disabled:opacity-60"
-    >
+    <Button type="button" variant="outline" size="sm" onClick={handleClick} disabled={pending}>
       {label}
-    </button>
+    </Button>
   );
 }
diff --git a/apps/web/src/components/ui/button.tsx b/apps/web/src/components/ui/button.tsx
new file mode 100644
index 0000000..864d392
--- /dev/null
+++ b/apps/web/src/components/ui/button.tsx
@@ -0,0 +1,45 @@
+import { Slot } from '@radix-ui/react-slot';
+import { cva, type VariantProps } from 'class-variance-authority';
+import { forwardRef, type ButtonHTMLAttributes } from 'react';
+
+import { cn } from '@/lib/utils';
+
+const buttonVariants = cva(
+  'inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium ring-offset-background transition-colors focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0',
+  {
+    variants: {
+      variant: {
+        default: 'bg-primary text-primary-foreground hover:bg-primary/90',
+        destructive: 'bg-destructive text-destructive-foreground hover:bg-destructive/90',
+        outline: 'border border-input bg-background hover:bg-accent hover:text-accent-foreground',
+        secondary: 'bg-secondary text-secondary-foreground hover:bg-secondary/80',
+        ghost: 'hover:bg-accent hover:text-accent-foreground',
+        link: 'text-primary underline-offset-4 hover:underline',
+      },
+      size: {
+        default: 'h-10 px-4 py-2',
+        sm: 'h-9 rounded-md px-3',
+        lg: 'h-11 rounded-md px-6',
+        icon: 'h-10 w-10',
+      },
+    },
+    defaultVariants: { variant: 'default', size: 'default' },
+  },
+);
+
+export interface ButtonProps
+  extends ButtonHTMLAttributes<HTMLButtonElement>, VariantProps<typeof buttonVariants> {
+  asChild?: boolean;
+}
+
+export const Button = forwardRef<HTMLButtonElement, ButtonProps>(
+  ({ className, variant, size, asChild = false, ...props }, ref) => {
+    const Comp = asChild ? Slot : 'button';
+    return (
+      <Comp ref={ref} className={cn(buttonVariants({ variant, size }), className)} {...props} />
+    );
+  },
+);
+Button.displayName = 'Button';
+
+export { buttonVariants };
diff --git a/apps/web/src/components/ui/card.tsx b/apps/web/src/components/ui/card.tsx
new file mode 100644
index 0000000..01cfc30
--- /dev/null
+++ b/apps/web/src/components/ui/card.tsx
@@ -0,0 +1,54 @@
+import { forwardRef, type HTMLAttributes } from 'react';
+
+import { cn } from '@/lib/utils';
+
+export const Card = forwardRef<HTMLDivElement, HTMLAttributes<HTMLDivElement>>(
+  ({ className, ...props }, ref) => (
+    <div
+      ref={ref}
+      className={cn('bg-card text-card-foreground rounded-lg border shadow-sm', className)}
+      {...props}
+    />
+  ),
+);
+Card.displayName = 'Card';
+
+export const CardHeader = forwardRef<HTMLDivElement, HTMLAttributes<HTMLDivElement>>(
+  ({ className, ...props }, ref) => (
+    <div ref={ref} className={cn('flex flex-col space-y-1.5 p-6', className)} {...props} />
+  ),
+);
+CardHeader.displayName = 'CardHeader';
+
+export const CardTitle = forwardRef<HTMLHeadingElement, HTMLAttributes<HTMLHeadingElement>>(
+  ({ className, ...props }, ref) => (
+    <h3
+      ref={ref}
+      className={cn('text-2xl font-semibold leading-none tracking-tight', className)}
+      {...props}
+    />
+  ),
+);
+CardTitle.displayName = 'CardTitle';
+
+export const CardDescription = forwardRef<
+  HTMLParagraphElement,
+  HTMLAttributes<HTMLParagraphElement>
+>(({ className, ...props }, ref) => (
+  <p ref={ref} className={cn('text-muted-foreground text-sm', className)} {...props} />
+));
+CardDescription.displayName = 'CardDescription';
+
+export const CardContent = forwardRef<HTMLDivElement, HTMLAttributes<HTMLDivElement>>(
+  ({ className, ...props }, ref) => (
+    <div ref={ref} className={cn('p-6 pt-0', className)} {...props} />
+  ),
+);
+CardContent.displayName = 'CardContent';
+
+export const CardFooter = forwardRef<HTMLDivElement, HTMLAttributes<HTMLDivElement>>(
+  ({ className, ...props }, ref) => (
+    <div ref={ref} className={cn('flex items-center p-6 pt-0', className)} {...props} />
+  ),
+);
+CardFooter.displayName = 'CardFooter';
diff --git a/apps/web/src/components/ui/input.tsx b/apps/web/src/components/ui/input.tsx
new file mode 100644
index 0000000..59a9312
--- /dev/null
+++ b/apps/web/src/components/ui/input.tsx
@@ -0,0 +1,18 @@
+import { forwardRef, type InputHTMLAttributes } from 'react';
+
+import { cn } from '@/lib/utils';
+
+export const Input = forwardRef<HTMLInputElement, InputHTMLAttributes<HTMLInputElement>>(
+  ({ className, type, ...props }, ref) => (
+    <input
+      type={type}
+      ref={ref}
+      className={cn(
+        'border-input bg-background ring-offset-background placeholder:text-muted-foreground focus-visible:ring-ring flex h-10 w-full rounded-md border px-3 py-2 text-sm file:border-0 file:bg-transparent file:text-sm file:font-medium focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50',
+        className,
+      )}
+      {...props}
+    />
+  ),
+);
+Input.displayName = 'Input';
diff --git a/apps/web/src/components/ui/label.tsx b/apps/web/src/components/ui/label.tsx
new file mode 100644
index 0000000..4127c99
--- /dev/null
+++ b/apps/web/src/components/ui/label.tsx
@@ -0,0 +1,19 @@
+'use client';
+
+import * as LabelPrimitive from '@radix-ui/react-label';
+import { cva, type VariantProps } from 'class-variance-authority';
+import { forwardRef, type ComponentPropsWithoutRef, type ElementRef } from 'react';
+
+import { cn } from '@/lib/utils';
+
+const labelVariants = cva(
+  'text-sm font-medium leading-none peer-disabled:cursor-not-allowed peer-disabled:opacity-70',
+);
+
+export const Label = forwardRef<
+  ElementRef<typeof LabelPrimitive.Root>,
+  ComponentPropsWithoutRef<typeof LabelPrimitive.Root> & VariantProps<typeof labelVariants>
+>(({ className, ...props }, ref) => (
+  <LabelPrimitive.Root ref={ref} className={cn(labelVariants(), className)} {...props} />
+));
+Label.displayName = LabelPrimitive.Root.displayName;
diff --git a/apps/web/src/lib/utils.ts b/apps/web/src/lib/utils.ts
new file mode 100644
index 0000000..a7c2663
--- /dev/null
+++ b/apps/web/src/lib/utils.ts
@@ -0,0 +1,6 @@
+import { clsx, type ClassValue } from 'clsx';
+import { twMerge } from 'tailwind-merge';
+
+export function cn(...inputs: ClassValue[]): string {
+  return twMerge(clsx(inputs));
+}
diff --git a/apps/web/src/styles/globals.css b/apps/web/src/styles/globals.css
index 2857b71..4f5d77c 100644
--- a/apps/web/src/styles/globals.css
+++ b/apps/web/src/styles/globals.css
@@ -3,7 +3,58 @@
 @tailwind utilities;
 
 @layer base {
-  html {
+  :root {
+    --background: 0 0% 100%;
+    --foreground: 222.2 84% 4.9%;
+    --card: 0 0% 100%;
+    --card-foreground: 222.2 84% 4.9%;
+    --popover: 0 0% 100%;
+    --popover-foreground: 222.2 84% 4.9%;
+    --primary: 142 71% 32%;
+    --primary-foreground: 0 0% 100%;
+    --secondary: 210 40% 96%;
+    --secondary-foreground: 222.2 47.4% 11.2%;
+    --muted: 210 40% 96%;
+    --muted-foreground: 215.4 16.3% 46.9%;
+    --accent: 210 40% 96%;
+    --accent-foreground: 222.2 47.4% 11.2%;
+    --destructive: 0 84.2% 60.2%;
+    --destructive-foreground: 210 40% 98%;
+    --border: 214.3 31.8% 91.4%;
+    --input: 214.3 31.8% 91.4%;
+    --ring: 142 71% 32%;
+    --radius: 0.5rem;
+  }
+
+  .dark {
+    --background: 222.2 84% 4.9%;
+    --foreground: 210 40% 98%;
+    --card: 222.2 84% 4.9%;
+    --card-foreground: 210 40% 98%;
+    --popover: 222.2 84% 4.9%;
+    --popover-foreground: 210 40% 98%;
+    --primary: 142 71% 45%;
+    --primary-foreground: 222.2 47.4% 11.2%;
+    --secondary: 217.2 32.6% 17.5%;
+    --secondary-foreground: 210 40% 98%;
+    --muted: 217.2 32.6% 17.5%;
+    --muted-foreground: 215 20.2% 65.1%;
+    --accent: 217.2 32.6% 17.5%;
+    --accent-foreground: 210 40% 98%;
+    --destructive: 0 62.8% 30.6%;
+    --destructive-foreground: 210 40% 98%;
+    --border: 217.2 32.6% 17.5%;
+    --input: 217.2 32.6% 17.5%;
+    --ring: 142 71% 45%;
+  }
+}
+
+@layer base {
+  * {
+    @apply border-border;
+  }
+  body {
+    @apply bg-background text-foreground;
     -webkit-text-size-adjust: 100%;
   }
 }
diff --git a/apps/web/tailwind.config.ts b/apps/web/tailwind.config.ts
index 68d0c5a..7777fc0 100644
--- a/apps/web/tailwind.config.ts
+++ b/apps/web/tailwind.config.ts
@@ -1,15 +1,62 @@
 import type { Config } from 'tailwindcss';
+import animate from 'tailwindcss-animate';
 
 const config: Config = {
+  darkMode: ['class'],
   content: ['./src/**/*.{ts,tsx}', '../../packages/ui/src/**/*.{ts,tsx}'],
   theme: {
+    container: {
+      center: true,
+      padding: '2rem',
+      screens: { '2xl': '1400px' },
+    },
     extend: {
       fontFamily: {
         sans: ['var(--font-sans)', 'system-ui', 'sans-serif'],
       },
+      colors: {
+        border: 'hsl(var(--border))',
+        input: 'hsl(var(--input))',
+        ring: 'hsl(var(--ring))',
+        background: 'hsl(var(--background))',
+        foreground: 'hsl(var(--foreground))',
+        primary: {
+          DEFAULT: 'hsl(var(--primary))',
+          foreground: 'hsl(var(--primary-foreground))',
+        },
+        secondary: {
+          DEFAULT: 'hsl(var(--secondary))',
+          foreground: 'hsl(var(--secondary-foreground))',
+        },
+        destructive: {
+          DEFAULT: 'hsl(var(--destructive))',
+          foreground: 'hsl(var(--destructive-foreground))',
+        },
+        muted: {
+          DEFAULT: 'hsl(var(--muted))',
+          foreground: 'hsl(var(--muted-foreground))',
+        },
+        accent: {
+          DEFAULT: 'hsl(var(--accent))',
+          foreground: 'hsl(var(--accent-foreground))',
+        },
+        popover: {
+          DEFAULT: 'hsl(var(--popover))',
+          foreground: 'hsl(var(--popover-foreground))',
+        },
+        card: {
+          DEFAULT: 'hsl(var(--card))',
+          foreground: 'hsl(var(--card-foreground))',
+        },
+      },
+      borderRadius: {
+        lg: 'var(--radius)',
+        md: 'calc(var(--radius) - 2px)',
+        sm: 'calc(var(--radius) - 4px)',
+      },
     },
   },
-  plugins: [],
+  plugins: [animate],
 };
 
 export default config;
diff --git a/packages/auth/src/server.ts b/packages/auth/src/server.ts
index 38b2ff9..67c3e4b 100644
--- a/packages/auth/src/server.ts
+++ b/packages/auth/src/server.ts
@@ -8,9 +8,11 @@ const env = readAuthEnv();
 
 const isGoogleConfigured = Boolean(env.GOOGLE_CLIENT_ID && env.GOOGLE_CLIENT_SECRET);
 
-export const enabledSocialProviders = isGoogleConfigured ? (['google'] as const) : ([] as const);
+export type SocialProvider = 'google';
 
-export type SocialProvider = (typeof enabledSocialProviders)[number];
+export const enabledSocialProviders: ReadonlyArray<SocialProvider> = isGoogleConfigured
+  ? ['google']
+  : [];
 
 const googleProvider = isGoogleConfigured
   ? {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 2ef8663..c0ef98b 100644
Binary files a/pnpm-lock.yaml and b/pnpm-lock.yaml differ