diff --git a/src/App.tsx b/src/App.tsx
index 9304030..9214bec 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1,9 +1,33 @@
+import { Routes, Route } from 'react-router'
+import { useSearchParams } from 'react-router'
+import { useEffect } from 'react'
 import { ThemeProvider } from './components/ThemeProvider'
+import { LoginPage } from './pages/auth/LoginPage'
+import { RegisterPage } from './pages/auth/RegisterPage'
+
+function Dashboard() {
+  const [searchParams, setSearchParams] = useSearchParams()
+  
+  useEffect(() => {
+    if (searchParams.get('auth') === 'success') {
+      // Clear the auth parameter from URL
+      setSearchParams({})
+      // You could show a success toast here
+      console.log('OAuth authentication successful!')
+    }
+  }, [searchParams, setSearchParams])
+
+  return <div>Dashboard - Coming Soon</div>
+}
 
 function App() {
   return (
     <ThemeProvider defaultTheme="dark" storageKey="vite-ui-theme">
-      <div>App</div>
+      <Routes>
+        <Route path="/login" element={<LoginPage />} />
+        <Route path="/register" element={<RegisterPage />} />
+        <Route path="/" element={<Dashboard />} />
+      </Routes>
     </ThemeProvider>
   )
 }
diff --git a/src/components/ui/sidebar.tsx b/src/components/ui/sidebar.tsx
index 1ee5a45..30638ac 100644
--- a/src/components/ui/sidebar.tsx
+++ b/src/components/ui/sidebar.tsx
@@ -2,7 +2,7 @@
 
 import * as React from "react"
 import { Slot } from "@radix-ui/react-slot"
-import { cva, VariantProps } from "class-variance-authority"
+import { cva, type VariantProps } from "class-variance-authority"
 import { PanelLeftIcon } from "lucide-react"
 
 import { useIsMobile } from "@/hooks/use-mobile"
diff --git a/src/components/ui/sonner.tsx b/src/components/ui/sonner.tsx
index cd62aff..33d2d2a 100644
--- a/src/components/ui/sonner.tsx
+++ b/src/components/ui/sonner.tsx
@@ -1,5 +1,5 @@
 import { useTheme } from "next-themes"
-import { Toaster as Sonner, ToasterProps } from "sonner"
+import { Toaster as Sonner, type ToasterProps } from "sonner"
 
 const Toaster = ({ ...props }: ToasterProps) => {
   const { theme = "system" } = useTheme()
diff --git a/src/lib/api.ts b/src/lib/api.ts
new file mode 100644
index 0000000..7a7b035
--- /dev/null
+++ b/src/lib/api.ts
@@ -0,0 +1,125 @@
+const API_BASE_URL = 'http://localhost:8000/api/v1'
+
+export interface LoginRequest {
+  email: string
+  password: string
+}
+
+export interface RegisterRequest {
+  email: string
+  password: string
+  name: string
+}
+
+export interface UserResponse {
+  id: number
+  email: string
+  name: string
+  picture?: string
+  role: string
+  credits: number
+  is_active: boolean
+  plan: Record<string, unknown>
+  created_at: string
+  updated_at: string
+}
+
+class ApiError extends Error {
+  public status: number
+  public details?: unknown
+  
+  constructor(
+    message: string,
+    status: number,
+    details?: unknown
+  ) {
+    super(message)
+    this.name = 'ApiError'
+    this.status = status
+    this.details = details
+  }
+}
+
+async function handleResponse<T>(response: Response): Promise<T> {
+  if (!response.ok) {
+    const errorData = await response.json().catch(() => ({}))
+    throw new ApiError(
+      errorData.detail || `HTTP error! status: ${response.status}`,
+      response.status,
+      errorData
+    )
+  }
+  return response.json()
+}
+
+export interface OAuthAuthorizationResponse {
+  authorization_url: string
+  state: string
+}
+
+export interface OAuthProvidersResponse {
+  providers: string[]
+}
+
+export const authApi = {
+  async login(data: LoginRequest): Promise<UserResponse> {
+    const response = await fetch(`${API_BASE_URL}/auth/login`, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      credentials: 'include',
+      body: JSON.stringify(data),
+    })
+    return handleResponse<UserResponse>(response)
+  },
+
+  async register(data: RegisterRequest): Promise<UserResponse> {
+    const response = await fetch(`${API_BASE_URL}/auth/register`, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      credentials: 'include',
+      body: JSON.stringify(data),
+    })
+    return handleResponse<UserResponse>(response)
+  },
+
+  async getCurrentUser(): Promise<UserResponse> {
+    const response = await fetch(`${API_BASE_URL}/auth/me`, {
+      credentials: 'include',
+    })
+    return handleResponse<UserResponse>(response)
+  },
+
+  async logout(): Promise<void> {
+    const response = await fetch(`${API_BASE_URL}/auth/logout`, {
+      method: 'POST',
+      credentials: 'include',
+    })
+    await response.json()
+  },
+
+  async refreshToken(): Promise<void> {
+    const response = await fetch(`${API_BASE_URL}/auth/refresh`, {
+      method: 'POST',
+      credentials: 'include',
+    })
+    await response.json()
+  },
+}
+
+export const oauthApi = {
+  async getProviders(): Promise<OAuthProvidersResponse> {
+    const response = await fetch(`${API_BASE_URL}/oauth/providers`)
+    return handleResponse<OAuthProvidersResponse>(response)
+  },
+
+  async getAuthorizationUrl(provider: string): Promise<OAuthAuthorizationResponse> {
+    const response = await fetch(`${API_BASE_URL}/oauth/${provider}/authorize`)
+    return handleResponse<OAuthAuthorizationResponse>(response)
+  },
+}
+
+export { ApiError }
\ No newline at end of file
diff --git a/src/pages/auth/LoginPage.tsx b/src/pages/auth/LoginPage.tsx
new file mode 100644
index 0000000..ac76504
--- /dev/null
+++ b/src/pages/auth/LoginPage.tsx
@@ -0,0 +1,193 @@
+import { useState, useEffect } from 'react'
+import { Link } from 'react-router'
+import { Button } from '@/components/ui/button'
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card'
+import { Input } from '@/components/ui/input'
+import { Label } from '@/components/ui/label'
+import { Separator } from '@/components/ui/separator'
+import { Github } from 'lucide-react'
+import { authApi, oauthApi, type LoginRequest } from '@/lib/api'
+
+export function LoginPage() {
+  const [formData, setFormData] = useState<LoginRequest>({
+    email: '',
+    password: '',
+  })
+  const [isLoading, setIsLoading] = useState(false)
+  const [isOAuthLoading, setIsOAuthLoading] = useState<string | null>(null)
+  const [error, setError] = useState<string | null>(null)
+  const [providers, setProviders] = useState<string[]>([])
+
+  useEffect(() => {
+    oauthApi.getProviders()
+      .then(response => setProviders(response.providers))
+      .catch(error => console.error('Failed to load OAuth providers:', error))
+  }, [])
+
+  const handleInputChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+    const { name, value } = e.target
+    setFormData(prev => ({
+      ...prev,
+      [name]: value,
+    }))
+  }
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault()
+    setIsLoading(true)
+    setError(null)
+
+    try {
+      await authApi.login(formData)
+      // Redirect to dashboard or home page
+      window.location.href = '/'
+    } catch (error: unknown) {
+      setError(error instanceof Error ? error.message : 'Login failed')
+    } finally {
+      setIsLoading(false)
+    }
+  }
+
+  const handleOAuthLogin = async (provider: string) => {
+    setIsOAuthLoading(provider)
+    setError(null)
+    
+    try {
+      // Get authorization URL from backend and redirect
+      const authResponse = await oauthApi.getAuthorizationUrl(provider)
+      window.location.href = authResponse.authorization_url
+    } catch (error: unknown) {
+      setError(error instanceof Error ? error.message : `${provider} login failed`)
+      setIsOAuthLoading(null)
+    }
+  }
+
+  const getProviderIcon = (provider: string) => {
+    switch (provider.toLowerCase()) {
+      case 'github':
+        return <Github className="w-4 h-4" />
+      case 'google':
+        return (
+          <svg className="w-4 h-4" viewBox="0 0 24 24">
+            <path fill="currentColor" d="M22.56 12.25c0-.78-.07-1.53-.2-2.25H12v4.26h5.92c-.26 1.37-1.04 2.53-2.21 3.31v2.77h3.57c2.08-1.92 3.28-4.74 3.28-8.09z"/>
+            <path fill="currentColor" d="M12 23c2.97 0 5.46-.98 7.28-2.66l-3.57-2.77c-.98.66-2.23 1.06-3.71 1.06-2.86 0-5.29-1.93-6.16-4.53H2.18v2.84C3.99 20.53 7.7 23 12 23z"/>
+            <path fill="currentColor" d="M5.84 14.09c-.22-.66-.35-1.36-.35-2.09s.13-1.43.35-2.09V7.07H2.18C1.43 8.55 1 10.22 1 12s.43 3.45 1.18 4.93l2.85-2.22.81-.62z"/>
+            <path fill="currentColor" d="M12 5.38c1.62 0 3.06.56 4.21 1.64l3.15-3.15C17.45 2.09 14.97 1 12 1 7.7 1 3.99 3.47 2.18 7.07l3.66 2.84c.87-2.6 3.3-4.53 6.16-4.53z"/>
+          </svg>
+        )
+      default:
+        return null
+    }
+  }
+
+  const getProviderName = (provider: string) => {
+    return provider.charAt(0).toUpperCase() + provider.slice(1)
+  }
+
+  return (
+    <div className="min-h-screen flex items-center justify-center bg-background px-4">
+      <Card className="w-full max-w-md">
+        <CardHeader className="space-y-1">
+          <CardTitle className="text-2xl font-bold text-center">
+            Sign in
+          </CardTitle>
+          <CardDescription className="text-center">
+            Enter your email and password to access your account
+          </CardDescription>
+        </CardHeader>
+        <CardContent>
+          {error && (
+            <div className="mb-4 p-3 text-sm text-red-600 bg-red-50 border border-red-200 rounded-md dark:bg-red-900/20 dark:text-red-400 dark:border-red-800">
+              {error}
+            </div>
+          )}
+
+          {/* OAuth Buttons */}
+          {providers.length > 0 && (
+            <div className="space-y-3 mb-6">
+              {providers.map((provider) => (
+                <Button
+                  key={provider}
+                  type="button"
+                  variant="outline"
+                  className="w-full"
+                  onClick={() => handleOAuthLogin(provider)}
+                  disabled={isOAuthLoading === provider || isLoading}
+                >
+                  {isOAuthLoading === provider ? (
+                    'Connecting...'
+                  ) : (
+                    <>
+                      {getProviderIcon(provider)}
+                      <span className="ml-2">Continue with {getProviderName(provider)}</span>
+                    </>
+                  )}
+                </Button>
+              ))}
+              
+              <div className="relative">
+                <div className="absolute inset-0 flex items-center">
+                  <Separator className="w-full" />
+                </div>
+                <div className="relative flex justify-center text-xs uppercase">
+                  <span className="bg-background px-2 text-muted-foreground">
+                    Or continue with email
+                  </span>
+                </div>
+              </div>
+            </div>
+          )}
+
+          {/* Email/Password Form */}
+          <form onSubmit={handleSubmit} className="space-y-4">
+            <div className="space-y-2">
+              <Label htmlFor="email">Email</Label>
+              <Input
+                id="email"
+                name="email"
+                type="email"
+                placeholder="your@email.com"
+                value={formData.email}
+                onChange={handleInputChange}
+                required
+                disabled={isLoading || isOAuthLoading !== null}
+              />
+            </div>
+
+            <div className="space-y-2">
+              <Label htmlFor="password">Password</Label>
+              <Input
+                id="password"
+                name="password"
+                type="password"
+                placeholder="Enter your password"
+                value={formData.password}
+                onChange={handleInputChange}
+                required
+                disabled={isLoading || isOAuthLoading !== null}
+              />
+            </div>
+
+            <Button
+              type="submit"
+              className="w-full"
+              disabled={isLoading || isOAuthLoading !== null}
+            >
+              {isLoading ? 'Signing in...' : 'Sign in'}
+            </Button>
+          </form>
+
+          <div className="mt-6 text-center text-sm">
+            Don't have an account?{' '}
+            <Link
+              to="/register"
+              className="font-medium text-primary hover:underline"
+            >
+              Sign up
+            </Link>
+          </div>
+        </CardContent>
+      </Card>
+    </div>
+  )
+}
\ No newline at end of file
diff --git a/src/pages/auth/RegisterPage.tsx b/src/pages/auth/RegisterPage.tsx
new file mode 100644
index 0000000..9d5c803
--- /dev/null
+++ b/src/pages/auth/RegisterPage.tsx
@@ -0,0 +1,160 @@
+import { useState } from 'react'
+import { Link } from 'react-router'
+import { Button } from '@/components/ui/button'
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card'
+import { Input } from '@/components/ui/input'
+import { Label } from '@/components/ui/label'
+import { authApi, type RegisterRequest } from '@/lib/api'
+
+export function RegisterPage() {
+  const [formData, setFormData] = useState<RegisterRequest>({
+    email: '',
+    password: '',
+    name: '',
+  })
+  const [confirmPassword, setConfirmPassword] = useState('')
+  const [isLoading, setIsLoading] = useState(false)
+  const [error, setError] = useState<string | null>(null)
+
+  const handleInputChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+    const { name, value } = e.target
+    if (name === 'confirmPassword') {
+      setConfirmPassword(value)
+    } else {
+      setFormData(prev => ({
+        ...prev,
+        [name]: value,
+      }))
+    }
+  }
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault()
+    setIsLoading(true)
+    setError(null)
+
+    if (formData.password !== confirmPassword) {
+      setError('Passwords do not match')
+      setIsLoading(false)
+      return
+    }
+
+    if (formData.password.length < 8) {
+      setError('Password must be at least 8 characters long')
+      setIsLoading(false)
+      return
+    }
+
+    try {
+      await authApi.register(formData)
+      // Redirect to dashboard or home page
+      window.location.href = '/'
+    } catch (error: unknown) {
+      setError(error instanceof Error ? error.message : 'Registration failed')
+    } finally {
+      setIsLoading(false)
+    }
+  }
+
+  return (
+    <div className="min-h-screen flex items-center justify-center bg-background px-4">
+      <Card className="w-full max-w-md">
+        <CardHeader className="space-y-1">
+          <CardTitle className="text-2xl font-bold text-center">
+            Create account
+          </CardTitle>
+          <CardDescription className="text-center">
+            Enter your information to create a new account
+          </CardDescription>
+        </CardHeader>
+        <CardContent>
+          <form onSubmit={handleSubmit} className="space-y-4">
+            {error && (
+              <div className="p-3 text-sm text-red-600 bg-red-50 border border-red-200 rounded-md dark:bg-red-900/20 dark:text-red-400 dark:border-red-800">
+                {error}
+              </div>
+            )}
+            
+            <div className="space-y-2">
+              <Label htmlFor="name">Full Name</Label>
+              <Input
+                id="name"
+                name="name"
+                type="text"
+                placeholder="John Doe"
+                value={formData.name}
+                onChange={handleInputChange}
+                required
+                disabled={isLoading}
+                minLength={1}
+                maxLength={100}
+              />
+            </div>
+
+            <div className="space-y-2">
+              <Label htmlFor="email">Email</Label>
+              <Input
+                id="email"
+                name="email"
+                type="email"
+                placeholder="your@email.com"
+                value={formData.email}
+                onChange={handleInputChange}
+                required
+                disabled={isLoading}
+              />
+            </div>
+
+            <div className="space-y-2">
+              <Label htmlFor="password">Password</Label>
+              <Input
+                id="password"
+                name="password"
+                type="password"
+                placeholder="Enter your password (min 8 characters)"
+                value={formData.password}
+                onChange={handleInputChange}
+                required
+                disabled={isLoading}
+                minLength={8}
+              />
+            </div>
+
+            <div className="space-y-2">
+              <Label htmlFor="confirmPassword">Confirm Password</Label>
+              <Input
+                id="confirmPassword"
+                name="confirmPassword"
+                type="password"
+                placeholder="Confirm your password"
+                value={confirmPassword}
+                onChange={handleInputChange}
+                required
+                disabled={isLoading}
+                minLength={8}
+              />
+            </div>
+
+            <Button
+              type="submit"
+              className="w-full"
+              disabled={isLoading}
+            >
+              {isLoading ? 'Creating account...' : 'Create account'}
+            </Button>
+          </form>
+
+          <div className="mt-6 text-center text-sm">
+            Already have an account?{' '}
+            <Link
+              to="/login"
+              className="font-medium text-primary hover:underline"
+            >
+              Sign in
+            </Link>
+          </div>
+        </CardContent>
+      </Card>
+    </div>
+  )
+}
\ No newline at end of file