diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index 2335416..e5ba036 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -3,21 +3,26 @@ import Header from './Header';
 import LoginPage from './LoginPage';
 import ProductList from './ProductList';
 import ProductDetail from './ProductDetail';
+import CartPage from './CartPage';
 import { CartProvider } from './CartContext';
+import { AuthProvider } from './AuthContext';
 
 function App() {
   return (
     <Router>
-      <CartProvider>
-        <Header />
-        <main>
-          <Routes>
-            <Route path="/" element={<ProductList />} />
-            <Route path="/product/:id" element={<ProductDetail />} />
-            <Route path="/login" element={<LoginPage />} />
-          </Routes>
-        </main>
-      </CartProvider>
+      <AuthProvider>
+        <CartProvider>
+          <Header />
+          <main>
+            <Routes>
+              <Route path="/" element={<ProductList />} />
+              <Route path="/product/:id" element={<ProductDetail />} />
+              <Route path="/cart" element={<CartPage />} />
+              <Route path="/login" element={<LoginPage />} />
+            </Routes>
+          </main>
+        </CartProvider>
+      </AuthProvider>
     </Router>
   )
 }
diff --git a/frontend/src/AuthContext.tsx b/frontend/src/AuthContext.tsx
new file mode 100644
index 0000000..16d2bba
--- /dev/null
+++ b/frontend/src/AuthContext.tsx
@@ -0,0 +1,28 @@
+import React, { createContext, useContext, useState, ReactNode } from 'react';
+
+interface AuthContextType {
+  isAuthenticated: boolean;
+  login: () => void;
+  logout: () => void;
+}
+
+const AuthContext = createContext<AuthContextType | undefined>(undefined);
+
+export const AuthProvider: React.FC<{ children: ReactNode }> = ({ children }) => {
+  const [isAuthenticated, setIsAuthenticated] = useState(false);
+
+  const login = () => setIsAuthenticated(true);
+  const logout = () => setIsAuthenticated(false);
+
+  return (
+    <AuthContext.Provider value={{ isAuthenticated, login, logout }}>
+      {children}
+    </AuthContext.Provider>
+  );
+};
+
+export const useAuth = () => {
+  const context = useContext(AuthContext);
+  if (!context) throw new Error('useAuth must be used within AuthProvider');
+  return context;
+};
diff --git a/frontend/src/CartPage.tsx b/frontend/src/CartPage.tsx
new file mode 100644
index 0000000..e01fb27
--- /dev/null
+++ b/frontend/src/CartPage.tsx
@@ -0,0 +1,33 @@
+import React from 'react';
+import { useCart } from './CartContext';
+
+const CartPage: React.FC = () => {
+  const { cart } = useCart();
+
+  const total = cart.reduce((sum, item) => sum + item.price, 0);
+
+  return (
+    <div className="container mx-auto p-4">
+      <h1 className="text-2xl font-bold mb-4">Your Shopping Cart</h1>
+      {cart.length === 0 ? (
+        <p>Your cart is empty.</p>
+      ) : (
+        <div>
+          <ul className="divide-y divide-gray-200">
+            {cart.map((item, index) => (
+              <li key={index} className="py-2 flex justify-between">
+                <span>{item.name}</span>
+                <span>${item.price.toFixed(2)}</span>
+              </li>
+            ))}
+          </ul>
+          <div className="mt-4 pt-2 border-t border-gray-200 text-xl font-bold">
+            Total: ${total.toFixed(2)}
+          </div>
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default CartPage;
diff --git a/frontend/src/Header.tsx b/frontend/src/Header.tsx
index 756a1d3..54e6774 100644
--- a/frontend/src/Header.tsx
+++ b/frontend/src/Header.tsx
@@ -1,10 +1,22 @@
+import { Link } from 'react-router-dom';
+import { useAuth } from './AuthContext';
+
 export default function Header() {
+  const { isAuthenticated, logout } = useAuth();
+
   return (
     <header className="bg-white shadow-sm p-4 flex justify-between items-center">
-      <h1 className="text-xl font-bold">MyApp</h1>
+      <h1 className="text-xl font-bold">
+        <Link to="/">MyApp</Link>
+      </h1>
       <nav>
-        <button className="text-gray-600 hover:text-gray-900 mx-2">Products</button>
-        <button className="text-blue-500 hover:text-blue-700 mx-2">Login</button>
+        <Link to="/" className="text-gray-600 hover:text-gray-900 mx-2">Products</Link>
+        <Link to="/cart" className="text-gray-600 hover:text-gray-900 mx-2">Cart</Link>
+        {isAuthenticated ? (
+          <button onClick={logout} className="text-red-500 hover:text-red-700 mx-2">Logout</button>
+        ) : (
+          <Link to="/login" className="text-blue-500 hover:text-blue-700 mx-2">Login</Link>
+        )}
       </nav>
     </header>
   );
diff --git a/frontend/src/LoginPage.tsx b/frontend/src/LoginPage.tsx
index 6b08657..9105e62 100644
--- a/frontend/src/LoginPage.tsx
+++ b/frontend/src/LoginPage.tsx
@@ -1,13 +1,22 @@
 import { useState } from 'react';
+import { useNavigate } from 'react-router-dom';
+import { useAuth } from './AuthContext';
 
 export default function LoginPage() {
   const [username, setUsername] = useState('');
   const [password, setPassword] = useState('');
+  const { login } = useAuth();
+  const navigate = useNavigate();
 
   const handleSubmit = async (e: React.FormEvent) => {
     e.preventDefault();
-    console.log('Login attempt:', { username, password });
-    // TODO: Implement actual JWT authentication logic here
+    // Simulate login
+    if (username === 'admin' && password === 'password') {
+      login();
+      navigate('/');
+    } else {
+      alert('Invalid credentials');
+    }
   };
 
   return (
@@ -45,4 +54,4 @@ export default function LoginPage() {
       </div>
     </div>
   );
-}
+}
\ No newline at end of file