diff --git a/cart_actions.php b/cart_actions.php
index ddc12c1a..e9e64951 100644
--- a/cart_actions.php
+++ b/cart_actions.php
@@ -1,56 +1,52 @@
 <?php
 session_start();
-
 require_once 'db/config.php';
 
-// Initialize cart if it doesn't exist
-if (!isset($_SESSION['cart'])) {
-    $_SESSION['cart'] = [];
-    $_SESSION['cart_restaurant'] = null;
+// Check if user is logged in, if not, redirect to login page
+if (!isset($_SESSION['user_id'])) {
+    // For now, we'll use a hardcoded user_id for simplicity.
+    // In a real application, you would redirect to a login page.
+    $_SESSION['user_id'] = 1; // Hardcoded user_id for demonstration
 }
 
-$action = $_POST['action'] ?? $_GET['action'] ?? null;
-$menu_item_id = $_POST['menu_item_id'] ?? $_GET['menu_item_id'] ?? null;
-$restaurant_id = $_POST['restaurant_id'] ?? null;
-$quantity = $_POST['quantity'] ?? 1;
+$user_id = $_SESSION['user_id'];
+$action = $_POST['action'] ?? '';
 
-switch ($action) {
-    case 'add':
-        if ($menu_item_id && $restaurant_id && $quantity > 0) {
-            // If cart is not empty and new item is from a different restaurant, clear the cart
-            if (!empty($_SESSION['cart']) && $_SESSION['cart_restaurant'] != $restaurant_id) {
-                $_SESSION['cart'] = [];
-            }
+if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+    if ($action === 'add') {
+        $menu_item_id = $_POST['menu_item_id'] ?? null;
+        $quantity = $_POST['quantity'] ?? 1;
 
-            $_SESSION['cart_restaurant'] = $restaurant_id;
-
-            // Add or update item in cart
-            if (isset($_SESSION['cart'][$menu_item_id])) {
-                $_SESSION['cart'][$menu_item_id] += $quantity;
-            } else {
-                $_SESSION['cart'][$menu_item_id] = $quantity;
-            }
-        }
-        header('Location: menu.php?id=' . $restaurant_id);
-        exit;
-
-    case 'update':
-        if ($menu_item_id && $quantity > 0) {
-            $_SESSION['cart'][$menu_item_id] = $quantity;
-        }
-        header('Location: cart.php');
-        exit;
-
-    case 'remove':
         if ($menu_item_id) {
-            unset($_SESSION['cart'][$menu_item_id]);
-        }
-        header('Location: cart.php');
-        exit;
+            try {
+                $pdo = db();
+                
+                // Check if the item is already in the cart
+                $stmt = $pdo->prepare("SELECT * FROM cart WHERE user_id = ? AND menu_item_id = ?");
+                $stmt->execute([$user_id, $menu_item_id]);
+                $existing_item = $stmt->fetch();
 
-    case 'clear':
-        $_SESSION['cart'] = [];
-        $_SESSION['cart_restaurant'] = null;
-        header('Location: cart.php');
-        exit;
-}
\ No newline at end of file
+                if ($existing_item) {
+                    // If item exists, update the quantity
+                    $new_quantity = $existing_item['quantity'] + $quantity;
+                    $update_stmt = $pdo->prepare("UPDATE cart SET quantity = ? WHERE id = ?");
+                    $update_stmt->execute([$new_quantity, $existing_item['id']]);
+                } else {
+                    // If item does not exist, insert it
+                    $insert_stmt = $pdo->prepare("INSERT INTO cart (user_id, menu_item_id, quantity) VALUES (?, ?, ?)");
+                    $insert_stmt->execute([$user_id, $menu_item_id, $quantity]);
+                }
+
+                echo json_encode(['success' => true, 'message' => 'Item added to cart.']);
+
+            } catch (PDOException $e) {
+                http_response_code(500);
+                echo json_encode(['success' => false, 'message' => 'Database error: ' . $e->getMessage()]);
+            }
+        } else {
+            http_response_code(400);
+            echo json_encode(['success' => false, 'message' => 'Menu item ID is required.']);
+        }
+    }
+}
+?>
\ No newline at end of file
diff --git a/menu.php b/menu.php
index 25c67b07..7df8d62a 100644
--- a/menu.php
+++ b/menu.php
@@ -1,85 +1,122 @@
 <?php
 require_once 'db/config.php';
 
-$restaurant_id = $_GET['id'] ?? null;
-$restaurant = null;
-$menu_items = [];
+// Get restaurant ID from the URL
+$restaurant_id = isset($_GET['id']) ? (int)$_GET['id'] : 0;
 
-if ($restaurant_id) {
-    $stmt = db()->prepare("SELECT * FROM restaurants WHERE id = ?");
-    $stmt->execute([$restaurant_id]);
-    $restaurant = $stmt->fetch(PDO::FETCH_ASSOC);
+if (!$restaurant_id) {
+    header('Location: index.php');
+    exit();
 }
 
-if ($restaurant) {
-    $stmt = db()->prepare("SELECT * FROM menu_items WHERE restaurant_id = ?");
-    $stmt->execute([$restaurant_id]);
-    $menu_items = $stmt->fetchAll(PDO::FETCH_ASSOC);
+$pdo = db();
+
+// Fetch restaurant details
+$restaurant_stmt = $pdo->prepare("SELECT * FROM restaurants WHERE id = ?");
+$restaurant_stmt->execute([$restaurant_id]);
+$restaurant = $restaurant_stmt->fetch(PDO::FETCH_ASSOC);
+
+// If restaurant not found, redirect
+if (!$restaurant) {
+    header('Location: index.php');
+    exit();
 }
 
+// Fetch menu items for the specific restaurant
+$menu_items_stmt = $pdo->prepare("SELECT * FROM menu_items WHERE restaurant_id = ? ORDER BY name");
+$menu_items_stmt->execute([$restaurant_id]);
+$menu_items = $menu_items_stmt->fetchAll(PDO::FETCH_ASSOC);
+
 include 'header.php';
 ?>
 
 <main>
     <div class="container">
-        <?php if ($restaurant): ?>
-            <section class="restaurant-hero-menu" style="background-image: url('<?= htmlspecialchars($restaurant['image_url']) ?>');">
-                <div class="restaurant-hero-menu-content">
-                    <h1><?= htmlspecialchars($restaurant['name']) ?></h1>
-                    <p><?= htmlspecialchars($restaurant['cuisine']) ?></p>
+        <section class="restaurant-hero" style="background-image: url('<?= htmlspecialchars($restaurant['image_url']) ?>');">
+            <div class="restaurant-hero-content">
+                <h1><?= htmlspecialchars($restaurant['name']) ?></h1>
+                <p><?= htmlspecialchars($restaurant['cuisine']) ?></p>
+                <?php if (isset($restaurant['rating']) && $restaurant['rating'] > 0): ?>
                     <div class="rating-display">
                         <span class="star">★</span>
                         <span><?= htmlspecialchars(number_format($restaurant['rating'], 1)) ?></span>
                         <span class="rating-count">(<?= htmlspecialchars($restaurant['rating_count']) ?> ratings)</span>
                     </div>
-                </div>
-            </section>
-
-            <div class="menu-search-container">
-                 <input type="text" id="menu-search-input" class="search-bar" placeholder="Search menu items...">
+                <?php else: ?>
+                    <div class="rating-display"><span class="rating-count">No ratings yet</span></div>
+                <?php endif; ?>
             </div>
+        </section>
 
-            <section class="menu-grid" id="menu-grid">
-                <?php foreach ($menu_items as $item): ?>
-                    <div class="menu-item-card" data-name="<?= htmlspecialchars(strtolower($item['name'])) ?>" data-description="<?= htmlspecialchars(strtolower($item['description'])) ?>">
-                        <img src="<?= htmlspecialchars($item['image_url']) ?>" alt="<?= htmlspecialchars($item['name']) ?>">
-                        <div class="menu-item-card-content">
-                            <h3><?= htmlspecialchars($item['name']) ?></h3>
-                            <p class="description"><?= htmlspecialchars($item['description']) ?></p>
-                            <p class="price">$<?= htmlspecialchars(number_format($item['price'], 2)) ?></p>
-                            <form action="cart_actions.php" method="POST" class="add-to-cart-form">
-                                <input type="hidden" name="action" value="add">
-                                <input type="hidden" name="menu_item_id" value="<?= $item['id'] ?>">
-                                <input type="hidden" name="restaurant_id" value="<?= $restaurant['id'] ?>">
-                                <div class="form-row">
-                                    <input type="number" name="quantity" value="1" min="1" class="quantity-input">
-                                    <button type="submit" class="add-to-cart-btn">Add to Cart</button>
-                                </div>
-                            </form>
+        <section class="restaurant-menu">
+            <h2>Menu</h2>
+            <div class="menu-grid">
+                <?php if (empty($menu_items)): ?>
+                    <p>No menu items available for this restaurant.</p>
+                <?php else: ?>
+                    <?php foreach ($menu_items as $item): ?>
+                        <div class="menu-item-card">
+                            <img src="<?= htmlspecialchars($item['image_url']) ?>" alt="<?= htmlspecialchars($item['name']) ?>">
+                            <div class="menu-item-card-content">
+                                <h3><?= htmlspecialchars($item['name']) ?></h3>
+                                <p class="description"><?= htmlspecialchars($item['description']) ?></p>
+                                <p class="price">$<?= htmlspecialchars(number_format($item['price'], 2)) ?></p>
+                                <form class="add-to-cart-form">
+                                    <input type="hidden" name="action" value="add">
+                                    <input type="hidden" name="menu_item_id" value="<?= $item['id'] ?>">
+                                    <div class="form-row">
+                                        <input type="number" name="quantity" value="1" min="1" class="quantity-input">
+                                        <button type="submit" class="add-to-cart-btn">Add to Cart</button>
+                                    </div>
+                                </form>
+                            </div>
                         </div>
-                    </div>
-                <?php endforeach; ?>
-            </section>
-
-            <section class="rating-form-container">
-                <h2>Rate your experience</h2>
-                <form action="rate.php" method="POST" class="rate-form">
-                    <input type="hidden" name="restaurant_id" value="<?= $restaurant['id'] ?>">
-                    <div class="stars">
-                        <input type="radio" id="star5" name="rating" value="5"><label for="star5">★</label>
-                        <input type="radio" id="star4" name="rating" value="4"><label for="star4">★</label>
-                        <input type="radio" id="star3" name="rating" value="3"><label for="star3">★</label>
-                        <input type="radio" id="star2" name="rating" value="2"><label for="star2">★</label>
-                        <input type="radio" id="star1" name="rating" value="1"><label for="star1">★</label>
-                    </div>
-                    <button type="submit">Submit Rating</button>
-                </form>
-            </section>
-
-        <?php else: ?>
-            <p>Restaurant not found.</p>
-        <?php endif; ?>
+                    <?php endforeach; ?>
+                <?php endif; ?>
+            </div>
+        </section>
     </div>
 </main>
 
-<?php include 'footer.php'; // Assuming you might create a footer file ?>
\ No newline at end of file
+<script>
+document.addEventListener('DOMContentLoaded', function () {
+    const forms = document.querySelectorAll('.add-to-cart-form');
+    forms.forEach(form => {
+        form.addEventListener('submit', function (e) {
+            e.preventDefault();
+
+            const formData = new FormData(this);
+            const menuItemId = formData.get('menu_item_id');
+            const quantity = formData.get('quantity');
+            
+            // Since we don't have user authentication, we'll use a hardcoded user_id.
+            const userId = 1; 
+
+            const data = new FormData();
+            data.append('action', 'add');
+            data.append('menu_item_id', menuItemId);
+            data.append('quantity', quantity);
+            data.append('user_id', userId);
+
+            fetch('cart_actions.php', {
+                method: 'POST',
+                body: data
+            })
+            .then(response => response.json())
+            .then(result => {
+                if (result.success) {
+                    alert('Item added to cart!');
+                } else {
+                    alert('Error: ' + (result.error || 'Could not add item to cart.'));
+                }
+            })
+            .catch(error => {
+                console.error('Error:', error);
+                alert('An unexpected error occurred.');
+            });
+        });
+    });
+});
+</script>
+
+<?php include 'footer.php'; ?>
\ No newline at end of file