diff --git a/admin/branches.php b/admin/branches.php
index a4a9ba9..8a8317b 100644
--- a/admin/branches.php
+++ b/admin/branches.php
@@ -91,4 +91,11 @@ $branches = $pdo->query("SELECT * FROM branches ORDER BY created_at DESC")->fetc
     </div>
 </div>
 
+<script>
+    // Auto-open modal if action=add
+    const urlParams = new URLSearchParams(window.location.search);
+    if (urlParams.get('action') === 'add') {
+        document.getElementById('addBranchModal').style.display = 'block';
+    }
+</script>
 <?php require_once 'includes/footer.php'; ?>
diff --git a/admin/cars.php b/admin/cars.php
index 2d9d601..884e9d9 100644
--- a/admin/cars.php
+++ b/admin/cars.php
@@ -16,12 +16,29 @@ if (isset($_POST['delete_car'])) {
 // Handle Add (Basic Implementation)
 if (isset($_POST['add_car'])) {
     try {
-        $stmt = $pdo->prepare("INSERT INTO cars (vin, brand, model, year, price, mileage, transmission, fuel_type, status, branch_id, dealer_id, installment_available) VALUES (?, ?, ?, ?, ?, ?, ?, ?, 'Available', ?, ?, ?)");
+        $image_url = 'assets/images/cars/default.jpg'; // Default
+        
+        // Handle Image Upload
+        if (isset($_FILES['image']) && $_FILES['image']['error'] === UPLOAD_ERR_OK) {
+            $uploadDir = __DIR__ . '/../assets/images/cars/';
+            if (!is_dir($uploadDir)) mkdir($uploadDir, 0777, true);
+            
+            $ext = pathinfo($_FILES['image']['name'], PATHINFO_EXTENSION);
+            $filename = uniqid('car_') . '.' . $ext;
+            $targetPath = $uploadDir . $filename;
+            
+            if (move_uploaded_file($_FILES['image']['tmp_name'], $targetPath)) {
+                $image_url = 'assets/images/cars/' . $filename;
+            }
+        }
+
+        $stmt = $pdo->prepare("INSERT INTO cars (vin, brand, model, year, price, mileage, transmission, fuel_type, status, branch_id, dealer_id, installment_available, image_url) VALUES (?, ?, ?, ?, ?, ?, ?, ?, 'Available', ?, ?, ?, ?)");
         $stmt->execute([
             $_POST['vin'], $_POST['brand'], $_POST['model'], $_POST['year'], 
             $_POST['price'], $_POST['mileage'], $_POST['transmission'], 
             $_POST['fuel_type'], $_POST['branch_id'], $_POST['dealer_id'] ?: null, 
-            isset($_POST['installment_available']) ? 1 : 0
+            isset($_POST['installment_available']) ? 1 : 0,
+            $image_url
         ]);
         
         // Log activity
@@ -83,9 +100,13 @@ $cars = $stmt->fetchAll();
 
 <!-- Simple Add Car Modal -->
 <div id="addCarModal" style="display:none; position:fixed; top:0; left:0; width:100%; height:100%; background:rgba(0,0,0,0.8); z-index:2000; align-items:center; justify-content:center; display:none;">
-    <div style="background:var(--card-bg); margin:5% auto; padding:2rem; width:90%; max-width:500px; border-radius:12px; border:1px solid var(--border-color); position: relative;">
+    <div style="background:var(--card-bg); margin:5% auto; padding:2rem; width:90%; max-width:500px; border-radius:12px; border:1px solid var(--border-color); position: relative; max-height: 90vh; overflow-y: auto;">
         <h2 style="margin-bottom:1.5rem; text-align:center;">Add New Car</h2>
-        <form method="POST">
+        <form method="POST" enctype="multipart/form-data">
+            <div style="margin-bottom:1rem;">
+                <label style="display:block; margin-bottom:0.5rem;">Vehicle Image</label>
+                <input type="file" name="image" accept="image/*" required style="width:100%; padding:0.8rem; background:var(--bg-color); border:1px solid var(--border-color); color:white; border-radius:4px;">
+            </div>
             <div style="margin-bottom:1rem;">
                 <input type="text" name="vin" placeholder="VIN Number" required style="width:100%; padding:0.8rem; background:var(--bg-color); border:1px solid var(--border-color); color:white; border-radius:4px;">
             </div>
@@ -143,8 +164,15 @@ $cars = $stmt->fetchAll();
     // Actually the inline style 'display:none' on the wrapper div is correct.
     // I'll add a script to ensure it works.
     const modal = document.getElementById('addCarModal');
-    // Ensure it's hidden on load
-    modal.style.display = 'none';
+    
+    // Auto-open if action=add
+    const urlParams = new URLSearchParams(window.location.search);
+    if (urlParams.get('action') === 'add') {
+        modal.style.display = 'flex';
+    } else {
+        // Ensure it's hidden on load if not requested
+        modal.style.display = 'none';
+    }
     
     // Override the button to show it as flex for centering
     document.querySelector('.page-header button').onclick = function() {
diff --git a/admin/users.php b/admin/users.php
index 497b45d..7a3cb02 100644
--- a/admin/users.php
+++ b/admin/users.php
@@ -12,6 +12,25 @@ if (isset($_POST['delete_user'])) {
     }
 }
 
+// Handle Add User
+if (isset($_POST['add_user'])) {
+    $username = $_POST['username'];
+    $email = $_POST['email'];
+    $password = password_hash($_POST['password'], PASSWORD_DEFAULT);
+    $role = $_POST['role'];
+    
+    // Check if exists
+    $stmt = $pdo->prepare("SELECT id FROM users WHERE username = ? OR email = ?");
+    $stmt->execute([$username, $email]);
+    if ($stmt->fetch()) {
+        echo "<div style='padding: 1rem; background: #f44336; color: white;'>User already exists</div>";
+    } else {
+        $stmt = $pdo->prepare("INSERT INTO users (username, email, password, role) VALUES (?, ?, ?, ?)");
+        $stmt->execute([$username, $email, $password, $role]);
+        echo "<div style='padding: 1rem; background: #4caf50; color: white;'>User Added Successfully</div>";
+    }
+}
+
 if (isset($_POST['update_role'])) {
     $id = $_POST['user_id'];
     $role = $_POST['role'];
@@ -28,6 +47,7 @@ $users = $stmt->fetchAll();
 
 <div class="page-header">
     <h1>User Management</h1>
+    <button onclick="document.getElementById('addUserModal').style.display='block'" class="btn-sm btn-primary">Add New User</button>
 </div>
 
 <div style="overflow-x: auto;">
@@ -84,3 +104,42 @@ $users = $stmt->fetchAll();
 </div>
 
 <?php require_once 'includes/footer.php'; ?>
+
+<!-- Add User Modal -->
+<div id="addUserModal" style="display:none; position:fixed; top:0; left:0; width:100%; height:100%; background:rgba(0,0,0,0.8); z-index:1000;">
+    <div style="background:var(--card-bg); width:400px; margin: 100px auto; padding:2rem; border-radius:8px; border:1px solid var(--border-color);">
+        <h2 style="margin-bottom:1rem; color:var(--text-primary);">Add User</h2>
+        <form method="POST">
+            <div style="margin-bottom:1rem;">
+                <label style="display:block; color:var(--text-secondary); margin-bottom:0.5rem;">Username</label>
+                <input type="text" name="username" required style="width:100%; padding:0.8rem; background:var(--bg-color); border:1px solid var(--border-color); color:var(--text-primary);">
+            </div>
+            <div style="margin-bottom:1rem;">
+                <label style="display:block; color:var(--text-secondary); margin-bottom:0.5rem;">Email</label>
+                <input type="email" name="email" required style="width:100%; padding:0.8rem; background:var(--bg-color); border:1px solid var(--border-color); color:var(--text-primary);">
+            </div>
+            <div style="margin-bottom:1rem;">
+                <label style="display:block; color:var(--text-secondary); margin-bottom:0.5rem;">Password</label>
+                <input type="password" name="password" required style="width:100%; padding:0.8rem; background:var(--bg-color); border:1px solid var(--border-color); color:var(--text-primary);">
+            </div>
+            <div style="margin-bottom:1rem;">
+                <label style="display:block; color:var(--text-secondary); margin-bottom:0.5rem;">Role</label>
+                <select name="role" style="width:100%; padding:0.8rem; background:var(--bg-color); border:1px solid var(--border-color); color:var(--text-primary);">
+                    <option value="Customer">Customer</option>
+                    <option value="Dealer">Dealer</option>
+                    <option value="Manager">Manager</option>
+                    <option value="Admin">Admin</option>
+                </select>
+            </div>
+            <button type="submit" name="add_user" class="btn-sm btn-primary" style="width:100%;">Create User</button>
+            <button type="button" onclick="document.getElementById('addUserModal').style.display='none'" class="btn-sm" style="width:100%; margin-top:0.5rem; background:transparent; border:1px solid var(--border-color);">Cancel</button>
+        </form>
+    </div>
+</div>
+
+<script>
+    const urlParams = new URLSearchParams(window.location.search);
+    if (urlParams.get('action') === 'add') {
+        document.getElementById('addUserModal').style.display = 'block';
+    }
+</script>
diff --git a/car_details.php b/car_details.php
new file mode 100644
index 0000000..cd73bfe
--- /dev/null
+++ b/car_details.php
@@ -0,0 +1,117 @@
+<?php
+declare(strict_types=1);
+require_once __DIR__ . '/includes/header.php';
+
+$id = $_GET['id'] ?? 0;
+$car = null;
+
+try {
+    $db = db();
+    $stmt = $db->prepare("SELECT c.*, b.name as branch_name, b.address as branch_address, b.phone as branch_phone 
+                          FROM cars c 
+                          LEFT JOIN branches b ON c.branch_id = b.id 
+                          WHERE c.id = ?");
+    $stmt->execute([$id]);
+    $car = $stmt->fetch();
+} catch (Exception $e) {
+    // Log error if needed
+}
+
+if (!$car) {
+    echo "<div class='container' style='padding: 4rem; text-align: center;'>
+            <h2>Car not found</h2>
+            <p>The vehicle you are looking for does not exist or has been removed.</p>
+            <a href='marketplace.php' class='btn'>Browse Inventory</a>
+          </div>";
+    require_once __DIR__ . '/includes/footer.php';
+    exit;
+}
+?>
+
+<section class="container" style="padding-top: 4rem;">
+    <div class="grid" style="grid-template-columns: 1.5fr 1fr; gap: 3rem; align-items: start;">
+        
+        <!-- Left Column: Images -->
+        <div>
+            <div class="car-image" style="height: 500px; margin-bottom: 1rem;">
+                <?php if ($car['is_featured']): ?>
+                    <span class="car-badge">FEATURED</span>
+                <?php endif; ?>
+                <img src="<?= htmlspecialchars($car['image_url']) ?>" alt="<?= htmlspecialchars($car['brand']) ?>" style="width: 100%; height: 100%; object-fit: cover; border-radius: var(--border-radius);">
+            </div>
+            <!-- Placeholder for additional gallery images if we had them -->
+            <div class="grid" style="grid-template-columns: repeat(4, 1fr); gap: 1rem;">
+                <!-- Just repeating main image for gallery effect since we only have one -->
+                <img src="<?= htmlspecialchars($car['image_url']) ?>" style="height: 80px; width: 100%; object-fit: cover; border-radius: 8px; cursor: pointer; opacity: 0.7;">
+                <img src="<?= htmlspecialchars($car['image_url']) ?>" style="height: 80px; width: 100%; object-fit: cover; border-radius: 8px; cursor: pointer; opacity: 0.7;">
+                <img src="<?= htmlspecialchars($car['image_url']) ?>" style="height: 80px; width: 100%; object-fit: cover; border-radius: 8px; cursor: pointer; opacity: 0.7;">
+            </div>
+        </div>
+
+        <!-- Right Column: Details -->
+        <div>
+            <div style="margin-bottom: 1rem; color: var(--accent-color); font-weight: 700; text-transform: uppercase; letter-spacing: 1px;">
+                <?= htmlspecialchars($car['status']) ?>
+            </div>
+            
+            <h1 style="font-size: 2.5rem; margin-bottom: 0.5rem; line-height: 1.2;">
+                <?= htmlspecialchars($car['year'] . ' ' . $car['brand'] . ' ' . $car['model']) ?>
+            </h1>
+            
+            <div style="font-size: 2rem; font-weight: 800; color: var(--accent-color); margin-bottom: 2rem;">
+                $<?= number_format((float)$car['price'], 0) ?>
+            </div>
+
+            <div style="background: var(--surface-color); padding: 2rem; border-radius: var(--border-radius); border: 1px solid var(--border-color); margin-bottom: 2rem;">
+                <h3 style="margin-bottom: 1.5rem; border-bottom: 1px solid var(--border-color); padding-bottom: 0.5rem;">Vehicle Specifications</h3>
+                
+                <div style="display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem;">
+                    <div>
+                        <div style="color: var(--text-secondary); font-size: 0.9rem;">Mileage</div>
+                        <div style="font-weight: 600;"><?= number_format((float)$car['mileage'], 0) ?> km</div>
+                    </div>
+                    <div>
+                        <div style="color: var(--text-secondary); font-size: 0.9rem;">Transmission</div>
+                        <div style="font-weight: 600;"><?= htmlspecialchars($car['transmission'] ?? 'Automatic') ?></div>
+                    </div>
+                    <div>
+                        <div style="color: var(--text-secondary); font-size: 0.9rem;">Fuel Type</div>
+                        <div style="font-weight: 600;"><?= htmlspecialchars($car['fuel_type'] ?? 'Petrol') ?></div>
+                    </div>
+                    <div>
+                        <div style="color: var(--text-secondary); font-size: 0.9rem;">VIN</div>
+                        <div style="font-weight: 600;"><?= htmlspecialchars($car['vin']) ?></div>
+                    </div>
+                    <div>
+                        <div style="color: var(--text-secondary); font-size: 0.9rem;">Location</div>
+                        <div style="font-weight: 600;"><?= htmlspecialchars($car['branch_name'] ?? 'Main Showroom') ?></div>
+                    </div>
+                </div>
+            </div>
+
+            <?php if ($car['installment_available']): ?>
+            <div style="background: rgba(255, 215, 0, 0.1); padding: 1.5rem; border-radius: var(--border-radius); border: 1px solid var(--accent-color); margin-bottom: 2rem;">
+                <h3 style="color: var(--accent-color); margin-bottom: 0.5rem;"><i class="fas fa-calculator"></i> Installment Plan</h3>
+                <p style="margin-bottom: 1rem; font-size: 0.9rem;">Flexible financing options available for this vehicle.</p>
+                <div style="font-size: 1.2rem; font-weight: 700;">
+                    Est. $<?= number_format($car['price'] / 60, 0) ?> / month
+                    <span style="font-size: 0.9rem; font-weight: 400; color: var(--text-secondary);">(60 months)</span>
+                </div>
+            </div>
+            <?php endif; ?>
+
+            <div style="display: flex; gap: 1rem;">
+                <a href="contact.php?subject=Purchase%20Inquiry%20-%20<?= urlencode($car['brand'] . ' ' . $car['model']) ?>&car_id=<?= $car['id'] ?>" class="btn" style="flex: 1; text-align: center;">Request to Buy</a>
+                <?php if ($car['installment_available']): ?>
+                    <a href="contact.php?subject=Installment%20Inquiry%20-%20<?= urlencode($car['brand'] . ' ' . $car['model']) ?>&car_id=<?= $car['id'] ?>" class="btn btn-outline" style="flex: 1; text-align: center;">Apply for Installment</a>
+                <?php endif; ?>
+            </div>
+            
+            <p style="margin-top: 1.5rem; font-size: 0.8rem; color: var(--text-secondary); text-align: center;">
+                * Price excludes tax and registration fees. Contact us for final pricing.
+            </p>
+        </div>
+    </div>
+</section>
+
+<?php require_once __DIR__ . '/includes/footer.php'; ?>
diff --git a/contact.php b/contact.php
index 6432686..c97a433 100644
--- a/contact.php
+++ b/contact.php
@@ -1,6 +1,14 @@
 <?php
 declare(strict_types=1);
 require_once __DIR__ . '/includes/header.php';
+
+$subject = $_GET['subject'] ?? '';
+$car_id = $_GET['car_id'] ?? '';
+$message_placeholder = "Please provide details about the vehicle or service you are interested in...";
+
+if ($car_id) {
+    $message_placeholder = "I am interested in vehicle ID #$car_id. Please provide more information.";
+}
 ?>
 
 <section class="container" style="padding-top: 6rem;">
@@ -31,16 +39,16 @@ require_once __DIR__ . '/includes/header.php';
                 </div>
                 <div class="form-group">
                     <label>Inquiry Subject</label>
-                    <select style="width: 100%; padding: 1.2rem; background: var(--bg-color); border: 1px solid rgba(255,255,255,0.1); border-radius: 8px; color: white; outline: none; cursor: pointer;">
-                        <option>Purchase Interest</option>
-                        <option>Installment Inquiry</option>
-                        <option>Vehicle Valuation (Selling)</option>
-                        <option>Technical Support</option>
+                    <select name="subject" style="width: 100%; padding: 1.2rem; background: var(--bg-color); border: 1px solid rgba(255,255,255,0.1); border-radius: 8px; color: white; outline: none; cursor: pointer;">
+                        <option value="Purchase Interest" <?= strpos($subject, 'Purchase') !== false ? 'selected' : '' ?>>Purchase Interest</option>
+                        <option value="Installment Inquiry" <?= strpos($subject, 'Installment') !== false ? 'selected' : '' ?>>Installment Inquiry</option>
+                        <option value="Vehicle Valuation" <?= strpos($subject, 'Valuation') !== false ? 'selected' : '' ?>>Vehicle Valuation (Selling)</option>
+                        <option value="Technical Support" <?= strpos($subject, 'Support') !== false ? 'selected' : '' ?>>Technical Support</option>
                     </select>
                 </div>
                 <div class="form-group">
                     <label>Your Message</label>
-                    <textarea rows="6" placeholder="Please provide details about the vehicle or service you are interested in..." required></textarea>
+                    <textarea name="message" rows="6" placeholder="<?= htmlspecialchars($message_placeholder) ?>" required></textarea>
                 </div>
                 <button type="submit" class="btn" style="width: 100%;">Send Message</button>
             </form>
diff --git a/includes/header.php b/includes/header.php
index d9ad75b..e85a448 100644
--- a/includes/header.php
+++ b/includes/header.php
@@ -30,9 +30,15 @@ $current_page = basename($_SERVER['PHP_SELF']);
             <li><a href="about.php" <?= $current_page == 'about.php' ? 'class="active"' : '' ?>>About</a></li>
             <li><a href="contact.php" <?= $current_page == 'contact.php' ? 'class="active"' : '' ?>>Contact Us</a></li>
             <?php if (isLoggedIn()): ?>
-                <?php if (isAdmin()): ?>
-                    <li><a href="/admin/index.php" class="admin-link"><i class="fas fa-chart-line"></i> Dashboard</a></li>
-                <?php endif; ?>
+                <?php 
+                    $dashboardLink = '/buyer/index.php'; // Default
+                    if (isAdmin()) {
+                        $dashboardLink = '/admin/index.php';
+                    } elseif (isset($_SESSION['role']) && $_SESSION['role'] === 'Dealer') {
+                        $dashboardLink = '/dealer/index.php';
+                    }
+                ?>
+                <li><a href="<?= $dashboardLink ?>" class="admin-link"><i class="fas fa-chart-line"></i> Dashboard</a></li>
                 <li><a href="/logout.php" class="admin-link"><i class="fas fa-sign-out-alt"></i> Logout</a></li>
             <?php else: ?>
                 <li><a href="/login.php" class="admin-link"><i class="fas fa-user"></i> Login</a></li>
diff --git a/index.php b/index.php
index 8473b4b..9fb7762 100644
--- a/index.php
+++ b/index.php
@@ -88,7 +88,7 @@ try {
                     Installments from <strong>$<?= number_format($car['price'] / 60, 0) ?>/mo</strong>
                 </div>
                 <div style="margin-top: 1.5rem;">
-                    <a href="marketplace.php" class="btn" style="width: 100%; padding: 0.8rem;">View Details</a>
+                    <a href="car_details.php?id=<?= $car['id'] ?>" class="btn" style="width: 100%; padding: 0.8rem;">View Details</a>
                 </div>
             </div>
         </div>
diff --git a/marketplace.php b/marketplace.php
index 3df1f94..5da8e4a 100644
--- a/marketplace.php
+++ b/marketplace.php
@@ -56,7 +56,7 @@ try {
                 </div>
                 
                 <div style="margin-top: 1.5rem;">
-                    <a href="#" class="btn" style="width: 100%;">Reserve Vehicle</a>
+                    <a href="car_details.php?id=<?= $car['id'] ?>" class="btn" style="width: 100%;">View Details</a>
                 </div>
             </div>
         </div>