diff --git a/catbar.php b/catbar.php
index 62890dd..1bd84f2 100644
--- a/catbar.php
+++ b/catbar.php
@@ -12,27 +12,27 @@
         <ul class="home-nav__list">
 
             <li class="home-nav__item">
-                <a href="?category=iphone" class="cat-btn">iPhone</a>
+                <button onclick="location.href='index.php?category=iphone'">iPhone</button>
             </li>
 
             <li class="home-nav__item">
-                <a href="?category=ipad" class="cat-btn">iPad</a>
+                <button onclick="location.href='index.php?category=ipad'">iPad</button>
             </li>
 
             <li class="home-nav__item">
-                <a href="?category=macbook" class="cat-btn">MacBook</a>
+                <button onclick="location.href='index.php?category=macbook'">MacBook</button>
             </li>
 
             <li class="home-nav__item">
-                <a href="?category=airpods" class="cat-btn">AirPods</a>
+                <button onclick="location.href='index.php?category=airpods'">AirPods</button>
             </li>
 
             <li class="home-nav__item">
-                <a href="?category=watch" class="cat-btn">Watch</a>
+                <button onclick="location.href='index.php?category=watch'">Watch</button>
             </li>
 
             <li class="home-nav__item">
-                <a href="?category=others" class="cat-btn">Others</a>
+                <button onclick="location.href='index.php?category=accessories'">Accessories</button>
             </li>
 
         </ul>
diff --git a/compcards.php b/compcards.php
index 52f0506..2f93518 100644
--- a/compcards.php
+++ b/compcards.php
@@ -1,44 +1,90 @@
+<?php
+// login.php
+
+ini_set('display_errors', 1);
+ini_set('display_startup_errors', 1);
+error_reporting(E_ALL);
+
+session_start();
+
+// 1) DB-Verbindung (einmal)
+$servername = "localhost";
+$port = 3306;
+$username = "FSST";
+$password = "L9wUNZZ9Qkbt";
+$db = "FSST";
+
+$conn = mysqli_connect($servername, $username, $password, $db, $port);
+if (!$conn)
+{
+    http_response_code(500);
+    die("Datenbankfehler");
+}
+?>
+
+<?php
+$activeCategory = isset($_GET['category']) ? $_GET['category'] : 'all';
+?>
+
+<?php
+$categories = [
+        'iphone'  => ['id' => 20, 'label' => 'iPhone'],
+        'ipad'    => ['id' => 21, 'label' => 'iPad'],
+        'macbook' => ['id' => 22, 'label' => 'MacBook'],
+        'airpods' => ['id' => 23, 'label' => 'AirPods'],
+        'accessories' => ['id' => 24, 'label' => 'Accessories'],
+];
+?>
+
+
+<?php foreach ($categories as $key => $cat): ?>
+
+    <?php if ($activeCategory === 'all' || $activeCategory === $key): ?>
+
+        <?php
+        $stmt = $conn->prepare("
+            SELECT productID, model, description, imagePath
+            FROM products
+            WHERE categoryID = ?
+        ");
+
+        $stmt->bind_param("i", $cat['id']); // i = integer
+        $stmt->execute();
+
+        $result = $stmt->get_result();
+        ?>
+
+        <?php if ($result->num_rows > 0): ?>
+            <section class="product-section">
+                <h2><?= htmlspecialchars($cat['label']) ?></h2>
+
+                <div class="product-scroll">
+                    <?php while ($product = $result->fetch_assoc()): ?>
+                        <div class="product-card">
+                            <img
+                                    src="<?= isset($product['imagePath']) ? $product['imagePath'] : 'assets/images/placeholder.png' ?>"
+                                    alt="<?= htmlspecialchars($product['model']) ?>">
+
+                            <div class="product-card__content">
+                                <h3><?= htmlspecialchars($product['model']) ?></h3>
+                                <p><?= htmlspecialchars($product['description']) ?></p>
+                            </div>
+                        </div>
+                    <?php endwhile; ?>
+                </div>
+            </section>
+        <?php endif; ?>
+
+        <?php $stmt->close(); ?>
+
+    <?php endif; ?>
+
+<?php endforeach; ?>
+
+
 <head>
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
 
     <link rel="stylesheet" href="assets/css/compcard.css">
-</head>
-
-<?php
-$activeCategory = $_GET['category'] ?? 'all';
-?>
-
-
-<?php if ($activeCategory === 'iphone' || $activeCategory === 'all'): ?>
-    <section class="product-section">
-        <h2>iPhone</h2>
-        <div class="product-scroll">
-            <div class="product-card">...</div>
-            <div class="product-card">...</div>
-            <div class="product-card">...</div>
-        </div>
-    </section>
-<?php endif; ?>
-
-<?php if ($activeCategory === 'ipad' || $activeCategory === 'all'): ?>
-    <section class="product-section">
-        <h2>iPad</h2>
-        <div class="product-scroll">
-            <div class="product-card">...</div>
-            <div class="product-card">...</div>
-            <div class="product-card">...</div>
-        </div>
-    </section>
-<?php endif; ?>
-
-<?php if ($activeCategory === 'macbook' || $activeCategory === 'all'): ?>
-    <section class="product-section">
-        <h2>MacBook</h2>
-        <div class="product-scroll">
-            <div class="product-card">...</div>
-            <div class="product-card">...</div>
-            <div class="product-card">...</div>
-        </div>
-    </section>
-<?php endif; ?>
+</head>
\ No newline at end of file
