diff --git a/webseite/config/subjects/deutsch/topics/topic1/properties.json b/webseite/config/subjects/deutsch/topics/topic1/properties.json
index 426de26..d4aa146 100644
--- a/webseite/config/subjects/deutsch/topics/topic1/properties.json
+++ b/webseite/config/subjects/deutsch/topics/topic1/properties.json
@@ -1,5 +1,5 @@
 {
-  "displayName": "Thema 1",
+  "displayName": "Geschichten erzählen",
   "icon": "fa-divide",
   "description": "Eine kurze Beschreibung des Themas",
   "relatedTopics": [
diff --git a/webseite/config/subjects/deutsch/topics/topic2/properties.json b/webseite/config/subjects/deutsch/topics/topic2/properties.json
index d776814..61ebc43 100644
--- a/webseite/config/subjects/deutsch/topics/topic2/properties.json
+++ b/webseite/config/subjects/deutsch/topics/topic2/properties.json
@@ -1,5 +1,5 @@
 {
-  "displayName": "Thema 2",
+  "displayName": "Wortarten",
   "icon": "fa-divide",
   "description": "Eine kurze Beschreibung des Themas",
   "relatedTopics": [
diff --git a/webseite/config/subjects/deutsch/topics/topic3/properties.json b/webseite/config/subjects/deutsch/topics/topic3/properties.json
index cbe7e38..c5d001d 100644
--- a/webseite/config/subjects/deutsch/topics/topic3/properties.json
+++ b/webseite/config/subjects/deutsch/topics/topic3/properties.json
@@ -1,5 +1,5 @@
 {
-  "displayName": "Thema 3",
+  "displayName": "Vier Fälle",
   "icon": "fa-divide",
   "description": "Eine kurze Beschreibung des Themas",
   "relatedTopics": [
diff --git a/webseite/config/subjects/deutsch/topics/topic4/properties.json b/webseite/config/subjects/deutsch/topics/topic4/properties.json
index 75b608a..2fcd460 100644
--- a/webseite/config/subjects/deutsch/topics/topic4/properties.json
+++ b/webseite/config/subjects/deutsch/topics/topic4/properties.json
@@ -1,5 +1,5 @@
 {
-  "displayName": "Thema 4",
+  "displayName": "Personalpronomen",
   "icon": "fa-divide",
   "description": "Eine kurze Beschreibung des Themas",
   "relatedTopics": [
diff --git a/webseite/config/subjects/deutsch/topics/topic5/properties.json b/webseite/config/subjects/deutsch/topics/topic5/properties.json
index 5b0924d..6cf0a79 100644
--- a/webseite/config/subjects/deutsch/topics/topic5/properties.json
+++ b/webseite/config/subjects/deutsch/topics/topic5/properties.json
@@ -1,5 +1,5 @@
 {
-  "displayName": "Thema 5",
+  "displayName": "Personalpronomen in den vier Fällen",
   "icon": "fa-divide",
   "description": "Eine kurze Beschreibung des Themas",
   "relatedTopics": [
diff --git a/webseite/config/subjects/deutsch/topics/topic6/properties.json b/webseite/config/subjects/deutsch/topics/topic6/properties.json
index fade52f..e686ff8 100644
--- a/webseite/config/subjects/deutsch/topics/topic6/properties.json
+++ b/webseite/config/subjects/deutsch/topics/topic6/properties.json
@@ -1,5 +1,5 @@
 {
-  "displayName": "Thema 6",
+  "displayName": "Satzglieder",
   "icon": "fa-divide",
   "description": "Eine kurze Beschreibung des Themas",
   "relatedTopics": [
diff --git a/webseite/config/subjects/deutsch/topics/topic7/properties.json b/webseite/config/subjects/deutsch/topics/topic7/properties.json
index d6ad914..a3e4282 100644
--- a/webseite/config/subjects/deutsch/topics/topic7/properties.json
+++ b/webseite/config/subjects/deutsch/topics/topic7/properties.json
@@ -1,5 +1,5 @@
 {
-  "displayName": "Thema 7",
+  "displayName": "Possessivpronomen",
   "icon": "fa-divide",
   "description": "Eine kurze Beschreibung des Themas",
   "relatedTopics": [
diff --git a/webseite/config/subjects/deutsch/topics/topic8/properties.json b/webseite/config/subjects/deutsch/topics/topic8/properties.json
index 22e4e58..c9701a3 100644
--- a/webseite/config/subjects/deutsch/topics/topic8/properties.json
+++ b/webseite/config/subjects/deutsch/topics/topic8/properties.json
@@ -1,5 +1,5 @@
 {
-  "displayName": "Thema 8",
+  "displayName": "Adverbiale Bestimmung",
   "icon": "fa-divide",
   "description": "Eine kurze Beschreibung des Themas",
   "relatedTopics": [
diff --git a/webseite/config/subjects/mathe/topics/topic1/properties.json b/webseite/config/subjects/mathe/topics/topic1/properties.json
index 426de26..2922997 100644
--- a/webseite/config/subjects/mathe/topics/topic1/properties.json
+++ b/webseite/config/subjects/mathe/topics/topic1/properties.json
@@ -1,5 +1,5 @@
 {
-  "displayName": "Thema 1",
+  "displayName": "Schriftliches Multiplizieren",
   "icon": "fa-divide",
   "description": "Eine kurze Beschreibung des Themas",
   "relatedTopics": [
diff --git a/webseite/config/subjects/mathe/topics/topic10/article.html b/webseite/config/subjects/mathe/topics/topic10/article.html
new file mode 100644
index 0000000..74f9470
--- /dev/null
+++ b/webseite/config/subjects/mathe/topics/topic10/article.html
@@ -0,0 +1,5 @@
+Das ist der Erklärtext
+<img alt="Ein Bild" src="$TOPICPATH/image.png">
+<br>
+When \(a \ne 0\), there are two solutions to \(ax^2 + bx + c = 0\) and they are
+$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$
\ No newline at end of file
diff --git a/webseite/config/subjects/mathe/topics/topic10/exercise1.pdf b/webseite/config/subjects/mathe/topics/topic10/exercise1.pdf
new file mode 100644
index 0000000..10b056f
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diff --git a/webseite/config/subjects/mathe/topics/topic10/image.png b/webseite/config/subjects/mathe/topics/topic10/image.png
new file mode 100644
index 0000000..a111ca4
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diff --git a/webseite/config/subjects/mathe/topics/topic10/properties.json b/webseite/config/subjects/mathe/topics/topic10/properties.json
new file mode 100644
index 0000000..017ce01
--- /dev/null
+++ b/webseite/config/subjects/mathe/topics/topic10/properties.json
@@ -0,0 +1,11 @@
+{
+  "displayName": "Rechnen mit Zeit",
+  "icon": "fa-divide",
+  "description": "Eine kurze Beschreibung des Themas",
+  "relatedTopics": [
+    "topic2", "topic3"
+  ],
+  "files": [
+    "exercise1.pdf"
+  ]
+}
\ No newline at end of file
diff --git a/webseite/config/subjects/mathe/topics/topic11/article.html b/webseite/config/subjects/mathe/topics/topic11/article.html
new file mode 100644
index 0000000..74f9470
--- /dev/null
+++ b/webseite/config/subjects/mathe/topics/topic11/article.html
@@ -0,0 +1,5 @@
+Das ist der Erklärtext
+<img alt="Ein Bild" src="$TOPICPATH/image.png">
+<br>
+When \(a \ne 0\), there are two solutions to \(ax^2 + bx + c = 0\) and they are
+$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$
\ No newline at end of file
diff --git a/webseite/config/subjects/mathe/topics/topic11/exercise1.pdf b/webseite/config/subjects/mathe/topics/topic11/exercise1.pdf
new file mode 100644
index 0000000..10b056f
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diff --git a/webseite/config/subjects/mathe/topics/topic11/image.png b/webseite/config/subjects/mathe/topics/topic11/image.png
new file mode 100644
index 0000000..a111ca4
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diff --git a/webseite/config/subjects/mathe/topics/topic11/properties.json b/webseite/config/subjects/mathe/topics/topic11/properties.json
new file mode 100644
index 0000000..2e2d568
--- /dev/null
+++ b/webseite/config/subjects/mathe/topics/topic11/properties.json
@@ -0,0 +1,11 @@
+{
+  "displayName": "Punkt- vor Strichrechnung",
+  "icon": "fa-divide",
+  "description": "Eine kurze Beschreibung des Themas",
+  "relatedTopics": [
+    "topic2", "topic3"
+  ],
+  "files": [
+    "exercise1.pdf"
+  ]
+}
\ No newline at end of file
diff --git a/webseite/config/subjects/mathe/topics/topic12/article.html b/webseite/config/subjects/mathe/topics/topic12/article.html
new file mode 100644
index 0000000..74f9470
--- /dev/null
+++ b/webseite/config/subjects/mathe/topics/topic12/article.html
@@ -0,0 +1,5 @@
+Das ist der Erklärtext
+<img alt="Ein Bild" src="$TOPICPATH/image.png">
+<br>
+When \(a \ne 0\), there are two solutions to \(ax^2 + bx + c = 0\) and they are
+$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$
\ No newline at end of file
diff --git a/webseite/config/subjects/mathe/topics/topic12/exercise1.pdf b/webseite/config/subjects/mathe/topics/topic12/exercise1.pdf
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index 0000000..10b056f
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diff --git a/webseite/config/subjects/mathe/topics/topic12/image.png b/webseite/config/subjects/mathe/topics/topic12/image.png
new file mode 100644
index 0000000..a111ca4
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diff --git a/webseite/config/subjects/mathe/topics/topic12/properties.json b/webseite/config/subjects/mathe/topics/topic12/properties.json
new file mode 100644
index 0000000..47b8541
--- /dev/null
+++ b/webseite/config/subjects/mathe/topics/topic12/properties.json
@@ -0,0 +1,11 @@
+{
+  "displayName": "Rechnen mit Klammern",
+  "icon": "fa-divide",
+  "description": "Eine kurze Beschreibung des Themas",
+  "relatedTopics": [
+    "topic2", "topic3"
+  ],
+  "files": [
+    "exercise1.pdf"
+  ]
+}
\ No newline at end of file
diff --git a/webseite/config/subjects/mathe/topics/topic2/properties.json b/webseite/config/subjects/mathe/topics/topic2/properties.json
index d776814..de172f7 100644
--- a/webseite/config/subjects/mathe/topics/topic2/properties.json
+++ b/webseite/config/subjects/mathe/topics/topic2/properties.json
@@ -1,5 +1,5 @@
 {
-  "displayName": "Thema 2",
+  "displayName": "Schriftliches Dividieren",
   "icon": "fa-divide",
   "description": "Eine kurze Beschreibung des Themas",
   "relatedTopics": [
diff --git a/webseite/config/subjects/mathe/topics/topic3/properties.json b/webseite/config/subjects/mathe/topics/topic3/properties.json
index cbe7e38..c724984 100644
--- a/webseite/config/subjects/mathe/topics/topic3/properties.json
+++ b/webseite/config/subjects/mathe/topics/topic3/properties.json
@@ -1,5 +1,5 @@
 {
-  "displayName": "Thema 3",
+  "displayName": "Echte Brüche",
   "icon": "fa-divide",
   "description": "Eine kurze Beschreibung des Themas",
   "relatedTopics": [
diff --git a/webseite/config/subjects/mathe/topics/topic4/article.html b/webseite/config/subjects/mathe/topics/topic4/article.html
new file mode 100644
index 0000000..74f9470
--- /dev/null
+++ b/webseite/config/subjects/mathe/topics/topic4/article.html
@@ -0,0 +1,5 @@
+Das ist der Erklärtext
+<img alt="Ein Bild" src="$TOPICPATH/image.png">
+<br>
+When \(a \ne 0\), there are two solutions to \(ax^2 + bx + c = 0\) and they are
+$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$
\ No newline at end of file
diff --git a/webseite/config/subjects/mathe/topics/topic4/exercise1.pdf b/webseite/config/subjects/mathe/topics/topic4/exercise1.pdf
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index 0000000..10b056f
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diff --git a/webseite/config/subjects/mathe/topics/topic4/image.png b/webseite/config/subjects/mathe/topics/topic4/image.png
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index 0000000..a111ca4
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diff --git a/webseite/config/subjects/mathe/topics/topic4/properties.json b/webseite/config/subjects/mathe/topics/topic4/properties.json
new file mode 100644
index 0000000..2d75863
--- /dev/null
+++ b/webseite/config/subjects/mathe/topics/topic4/properties.json
@@ -0,0 +1,11 @@
+{
+  "displayName": "Unechte Brüche",
+  "icon": "fa-divide",
+  "description": "Eine kurze Beschreibung des Themas",
+  "relatedTopics": [
+    "topic2", "topic3"
+  ],
+  "files": [
+    "exercise1.pdf"
+  ]
+}
\ No newline at end of file
diff --git a/webseite/config/subjects/mathe/topics/topic5/article.html b/webseite/config/subjects/mathe/topics/topic5/article.html
new file mode 100644
index 0000000..74f9470
--- /dev/null
+++ b/webseite/config/subjects/mathe/topics/topic5/article.html
@@ -0,0 +1,5 @@
+Das ist der Erklärtext
+<img alt="Ein Bild" src="$TOPICPATH/image.png">
+<br>
+When \(a \ne 0\), there are two solutions to \(ax^2 + bx + c = 0\) and they are
+$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$
\ No newline at end of file
diff --git a/webseite/config/subjects/mathe/topics/topic5/exercise1.pdf b/webseite/config/subjects/mathe/topics/topic5/exercise1.pdf
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diff --git a/webseite/config/subjects/mathe/topics/topic5/properties.json b/webseite/config/subjects/mathe/topics/topic5/properties.json
new file mode 100644
index 0000000..9e890e4
--- /dev/null
+++ b/webseite/config/subjects/mathe/topics/topic5/properties.json
@@ -0,0 +1,11 @@
+{
+  "displayName": "Gemischte Zahlen",
+  "icon": "fa-divide",
+  "description": "Eine kurze Beschreibung des Themas",
+  "relatedTopics": [
+    "topic2", "topic3"
+  ],
+  "files": [
+    "exercise1.pdf"
+  ]
+}
\ No newline at end of file
diff --git a/webseite/config/subjects/mathe/topics/topic6/article.html b/webseite/config/subjects/mathe/topics/topic6/article.html
new file mode 100644
index 0000000..74f9470
--- /dev/null
+++ b/webseite/config/subjects/mathe/topics/topic6/article.html
@@ -0,0 +1,5 @@
+Das ist der Erklärtext
+<img alt="Ein Bild" src="$TOPICPATH/image.png">
+<br>
+When \(a \ne 0\), there are two solutions to \(ax^2 + bx + c = 0\) and they are
+$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$
\ No newline at end of file
diff --git a/webseite/config/subjects/mathe/topics/topic6/exercise1.pdf b/webseite/config/subjects/mathe/topics/topic6/exercise1.pdf
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diff --git a/webseite/config/subjects/mathe/topics/topic6/properties.json b/webseite/config/subjects/mathe/topics/topic6/properties.json
new file mode 100644
index 0000000..522db7c
--- /dev/null
+++ b/webseite/config/subjects/mathe/topics/topic6/properties.json
@@ -0,0 +1,11 @@
+{
+  "displayName": "Addition & Subtraktion mit Brüchen",
+  "icon": "fa-divide",
+  "description": "Eine kurze Beschreibung des Themas",
+  "relatedTopics": [
+    "topic2", "topic3"
+  ],
+  "files": [
+    "exercise1.pdf"
+  ]
+}
\ No newline at end of file
diff --git a/webseite/config/subjects/mathe/topics/topic7/article.html b/webseite/config/subjects/mathe/topics/topic7/article.html
new file mode 100644
index 0000000..74f9470
--- /dev/null
+++ b/webseite/config/subjects/mathe/topics/topic7/article.html
@@ -0,0 +1,5 @@
+Das ist der Erklärtext
+<img alt="Ein Bild" src="$TOPICPATH/image.png">
+<br>
+When \(a \ne 0\), there are two solutions to \(ax^2 + bx + c = 0\) and they are
+$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$
\ No newline at end of file
diff --git a/webseite/config/subjects/mathe/topics/topic7/exercise1.pdf b/webseite/config/subjects/mathe/topics/topic7/exercise1.pdf
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diff --git a/webseite/config/subjects/mathe/topics/topic7/properties.json b/webseite/config/subjects/mathe/topics/topic7/properties.json
new file mode 100644
index 0000000..d752215
--- /dev/null
+++ b/webseite/config/subjects/mathe/topics/topic7/properties.json
@@ -0,0 +1,11 @@
+{
+  "displayName": "Multiplikation & Division mit Brüchen",
+  "icon": "fa-divide",
+  "description": "Eine kurze Beschreibung des Themas",
+  "relatedTopics": [
+    "topic2", "topic3"
+  ],
+  "files": [
+    "exercise1.pdf"
+  ]
+}
\ No newline at end of file
diff --git a/webseite/config/subjects/mathe/topics/topic8/article.html b/webseite/config/subjects/mathe/topics/topic8/article.html
new file mode 100644
index 0000000..74f9470
--- /dev/null
+++ b/webseite/config/subjects/mathe/topics/topic8/article.html
@@ -0,0 +1,5 @@
+Das ist der Erklärtext
+<img alt="Ein Bild" src="$TOPICPATH/image.png">
+<br>
+When \(a \ne 0\), there are two solutions to \(ax^2 + bx + c = 0\) and they are
+$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$
\ No newline at end of file
diff --git a/webseite/config/subjects/mathe/topics/topic8/exercise1.pdf b/webseite/config/subjects/mathe/topics/topic8/exercise1.pdf
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diff --git a/webseite/config/subjects/mathe/topics/topic8/properties.json b/webseite/config/subjects/mathe/topics/topic8/properties.json
new file mode 100644
index 0000000..d7e732e
--- /dev/null
+++ b/webseite/config/subjects/mathe/topics/topic8/properties.json
@@ -0,0 +1,11 @@
+{
+  "displayName": "Rechnen mit Gewichten",
+  "icon": "fa-divide",
+  "description": "Eine kurze Beschreibung des Themas",
+  "relatedTopics": [
+    "topic2", "topic3"
+  ],
+  "files": [
+    "exercise1.pdf"
+  ]
+}
\ No newline at end of file
diff --git a/webseite/config/subjects/mathe/topics/topic9/article.html b/webseite/config/subjects/mathe/topics/topic9/article.html
new file mode 100644
index 0000000..74f9470
--- /dev/null
+++ b/webseite/config/subjects/mathe/topics/topic9/article.html
@@ -0,0 +1,5 @@
+Das ist der Erklärtext
+<img alt="Ein Bild" src="$TOPICPATH/image.png">
+<br>
+When \(a \ne 0\), there are two solutions to \(ax^2 + bx + c = 0\) and they are
+$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$
\ No newline at end of file
diff --git a/webseite/config/subjects/mathe/topics/topic9/exercise1.pdf b/webseite/config/subjects/mathe/topics/topic9/exercise1.pdf
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diff --git a/webseite/config/subjects/mathe/topics/topic9/properties.json b/webseite/config/subjects/mathe/topics/topic9/properties.json
new file mode 100644
index 0000000..2fa4092
--- /dev/null
+++ b/webseite/config/subjects/mathe/topics/topic9/properties.json
@@ -0,0 +1,11 @@
+{
+  "displayName": "Rechnen mit Längen",
+  "icon": "fa-divide",
+  "description": "Eine kurze Beschreibung des Themas",
+  "relatedTopics": [
+    "topic2", "topic3"
+  ],
+  "files": [
+    "exercise1.pdf"
+  ]
+}
\ No newline at end of file
diff --git a/webseite/homepage.php b/webseite/homepage.php
index a7dbd14..2390e93 100644
--- a/webseite/homepage.php
+++ b/webseite/homepage.php
@@ -23,13 +23,13 @@
         .card-hover:hover {
             transform: translateY(-10px) scale(1.02);
             box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
-                        0 10px 10px -5px rgba(0, 0, 0, 0.04);
+            0 10px 10px -5px rgba(0, 0, 0, 0.04);
         }
 
         .gradient-border {
             position: relative;
             background: linear-gradient(white, white) padding-box,
-                       linear-gradient(45deg, #7C3AED, #F59E0B) border-box;
+            linear-gradient(45deg, #7C3AED, #F59E0B) border-box;
             border: 4px solid transparent;
             border-radius: 1rem;
         }
@@ -97,88 +97,143 @@
 </head>
 <body class="bg-gray-50">
 <!-- Animated background blobs -->
-    <div class="fixed inset-0 -z-10 overflow-hidden">
-        <div class="blob absolute w-96 h-96 bg-purple-300/30 -top-48 -left-16"></div>
-        <div class="blob absolute w-96 h-96 bg-amber-300/30 bottom-0 right-0"></div>
-    </div>
-
-    <!-- Navigation -->
-    <nav class="fixed top-0 w-full bg-white/80 backdrop-blur-lg shadow-sm z-50">
-        <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
-            <div class="flex justify-between h-16">
-                <div class="flex items-center">
-                    <span class="text-2xl font-bold text-purple-600">Lern<span class="text-amber-500">Portal</span></span>
-                </div>
-                <!-- Add this accessibility controls -->
+<div class="fixed inset-0 -z-10 overflow-hidden">
+    <div class="blob absolute w-96 h-96 bg-purple-300/30 -top-48 -left-16"></div>
+    <div class="blob absolute w-96 h-96 bg-amber-300/30 bottom-0 right-0"></div>
+</div>
 
+<!-- Navigation -->
+<nav class="fixed top-0 w-full bg-white/80 backdrop-blur-lg shadow-sm z-50">
+    <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
+        <div class="flex justify-between h-16">
+            <div class="flex items-center">
+                <span class="text-2xl font-bold text-purple-600">Lern<span class="text-amber-500">Portal</span></span>
             </div>
-        </div>
-    </nav>
+            <!-- Add this accessibility controls -->
 
-    <!-- Hero Section -->
-    <div class="pt-24 pb-16 px-4">
-        <div class="max-w-7xl mx-auto">
-            <div class="text-center">
-                <h1 class="text-5xl md:text-6xl font-bold text-gray-900 mb-6 pulse">
-                    Entdecke deine <span class="text-purple-600">Lernreise</span>
-                </h1>
-                <p class="text-xl text-gray-600 max-w-2xl mx-auto">
-                    Interaktives Lernen für die digitale Generation. Personalisierte Lernpfade, sofortiges Feedback und spielerische Elemente.
-                </p>
-            </div>
         </div>
     </div>
+</nav>
 
-    <!-- Subject Grid -->
-    <div class="max-w-7xl mx-auto px-4 py-12 grid grid-cols-1 md:grid-cols-2 gap-8 mb-8">
-        <!-- Mathematik -->
-        <?php
-            require_once ("classes/SubjectData.php");
-            $subjects = SubjectData::getAll();
+<!-- Hero Section -->
+<div class="pt-24 pb-16 px-4">
+    <div class="max-w-7xl mx-auto">
+        <div class="text-center">
+            <h1 class="text-5xl md:text-6xl font-bold text-gray-900 mb-6 pulse">
+                Entdecke deine <span class="text-purple-600">Lernreise</span>
+            </h1>
+            <p class="text-xl text-gray-600 max-w-2xl mx-auto">
+                Interaktives Lernen für die digitale Generation. Personalisierte Lernpfade, sofortiges Feedback und spielerische Elemente.
+            </p>
+        </div>
+    </div>
+</div>
 
-            foreach ($subjects as $subject) {
-                ?>
-                    <a href="subject.php?subject=<?php echo($subject->id); ?>" class="block">
-                        <div class="gradient-border p-6 card-hover bg-white">
-                            <div class="flex items-start space-x-4">
-                                <div class="w-12 h-12 rounded-lg bg-purple-100 flex items-center justify-center">
-                                    <i class="fas <?php echo($subject->icon); ?> text-2xl text-purple-600"></i>
-                                </div>
-                                <div class="flex-1">
-                                    <h3 class="text-xl font-bold text-gray-900 mb-2"><?php echo($subject->displayName); ?></h3>
-                                    <p class="text-gray-600 mb-4"><?php echo($subject->description); ?></p>
-                                    <div class="grid grid-cols-3 gap-4 mb-4">
-                                        <div class="text-center p-2 rounded-lg bg-purple-50">
-                                            <div class="font-bold text-purple-600">150+</div>
-                                            <div class="text-sm text-gray-600">Übungen</div>
-                                        </div>
-                                        <div class="text-center p-2 rounded-lg bg-purple-50">
-                                            <div class="font-bold text-purple-600">12</div>
-                                            <div class="text-sm text-gray-600">Kapitel</div>
-                                        </div>
-                                        <div class="text-center p-2 rounded-lg bg-purple-50">
-                                            <div class="font-bold text-purple-600">4.8</div>
-                                            <div class="text-sm text-gray-600">Bewertung</div>
-                                        </div>
-                                    </div>
-                                    <div class="flex items-center space-x-2">
-                                        <span class="text-sm text-gray-500">Aktuelle Einheit:</span>
-                                        <span class="px-2 py-1 rounded-full bg-purple-100 text-purple-600 text-sm">Bruchrechnung</span>
-                                    </div>
-                                </div>
+<!-- Subject Grid -->
+<div class="max-w-7xl mx-auto px-4 py-12 grid grid-cols-1 md:grid-cols-2 gap-8 mb-8">
+    <!-- Mathematik -->
+    <?php
+    require_once ("classes/SubjectData.php");
+    $subjects = SubjectData::getAll();
+
+    // Function to generate color variants from base color
+    function generateColorVariants($baseColor) {
+        // Remove # if present
+        $baseColor = ltrim($baseColor, '#');
+
+        // Convert to RGB
+        $r = hexdec(substr($baseColor, 0, 2));
+        $g = hexdec(substr($baseColor, 2, 2));
+        $b = hexdec(substr($baseColor, 4, 2));
+
+        // Generate lighter variant for secondary
+        $secondary = sprintf("#%02x%02x%02x",
+            min(255, $r + 70),
+            min(255, $g + 70),
+            min(255, $b + 70)
+        );
+
+        // Generate very light variant for background
+        $light = sprintf("#%02x%02x%02x",
+            min(255, $r + 140),
+            min(255, $g + 140),
+            min(255, $b + 140)
+        );
+
+        return [
+            'primary' => '#' . $baseColor,
+            'secondary' => $secondary,
+            'light' => $light
+        ];
+    }
+
+    // Generate colors for each subject
+    foreach ($subjects as $subject) {
+        $colors = generateColorVariants($subject->color);
+        ?>
+        <a href="subject.php?subject=<?php echo($subject->id); ?>" class="block">
+            <div class="gradient-border p-6 card-hover" style="
+                    background: linear-gradient(145deg,
+            <?php echo $colors['light']; ?> 0%,
+                    white 100%
+                    );
+                    border: 2px solid <?php echo $colors['secondary']; ?>;
+                    border-radius: 1rem;
+                    box-shadow: 0 4px 6px -1px <?php echo $colors['light']; ?>,
+                    0 2px 4px -2px <?php echo $colors['secondary']; ?>;">
+                <div class="flex items-start space-x-4">
+                    <div class="w-12 h-12 rounded-lg flex items-center justify-center"
+                         style="background-color: rgba(<?php
+                         $hex = ltrim($colors['primary'], '#');
+                         $r = hexdec(substr($hex, 0, 2));
+                         $g = hexdec(substr($hex, 2, 2));
+                         $b = hexdec(substr($hex, 4, 2));
+                         echo "$r, $g, $b, 0.1";
+                         ?>)">
+                        <i class="fas <?php echo($subject->icon); ?> text-2xl"
+                           style="color: <?php echo $colors['primary']; ?>"></i>
+                    </div>
+                    <div class="flex-1">
+                        <h3 class="text-xl font-bold text-gray-900 mb-2"><?php echo($subject->displayName); ?></h3>
+                        <p class="text-gray-600 mb-4"><?php echo($subject->description); ?></p>
+                        <div class="grid grid-cols-3 gap-4 mb-4">
+                            <div class="text-center p-2 rounded-lg"
+                                 style="background-color: <?php echo $colors['light']; ?>">
+                                <div class="font-bold"
+                                     style="color: <?php echo $colors['primary']; ?>">150+</div>
+                                <div class="text-sm text-gray-600">Übungen</div>
+                            </div>
+                            <div class="text-center p-2 rounded-lg bg-purple-50">
+                                <div class="font-bold text-purple-600">12</div>
+                                <div class="text-sm text-gray-600">Kapitel</div>
+                            </div>
+                            <div class="text-center p-2 rounded-lg bg-purple-50">
+                                <div class="font-bold text-purple-600">4.8</div>
+                                <div class="text-sm text-gray-600">Bewertung</div>
                             </div>
                         </div>
-                    </a>
+                        <div class="flex items-center space-x-2">
+                            <span class="text-sm text-gray-500">Aktuelle Einheit:</span>
+                            <span class="px-2 py-1 rounded-full text-sm"
+                                  style="background-color: <?php echo $colors['light']; ?>;
+                                          color: <?php echo $colors['primary']; ?>">
+                                            Bruchrechnung
+                                        </span>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </a>
 
-                <?php
-            }
-        ?>
+        <?php
+    }
+    ?>
 
-    </div>
+</div>
 
-    <button class="scroll-top" onclick="scrollToTop()" id="scrollTop">
-        <i class="fas fa-arrow-up"></i>
-    </button>
+<button class="scroll-top" onclick="scrollToTop()" id="scrollTop">
+    <i class="fas fa-arrow-up"></i>
+</button>
 
 <footer class="fixed bottom-0 w-full bg-white/80 backdrop-blur-lg shadow-sm p-5">
     <div class="max-w-7xl mx-auto sm:px-6 lg:px-8">
@@ -189,65 +244,65 @@
     </div>
 </footer>
 
-    <script>
-        // Initialize GSAP animations
-        gsap.from(".gradient-border", {
-            duration: 0.8,
-            y: 60,
-            opacity: 0,
-            stagger: 0.2,
-            ease: "power3.out"
-        });
+<script>
+    // Initialize GSAP animations
+    gsap.from(".gradient-border", {
+        duration: 0.8,
+        y: 60,
+        opacity: 0,
+        stagger: 0.2,
+        ease: "power3.out"
+    });
 
-        // Add intersection observer for scroll animations
-        const observer = new IntersectionObserver((entries) => {
-            entries.forEach(entry => {
-                if (entry.isIntersecting) {
-                    entry.target.style.transform = "translateY(0)";
-                    entry.target.style.opacity = "1";
-                }
-            });
-        }, { threshold: 0.1 });
-
-        document.querySelectorAll('.gradient-border').forEach((el) => {
-            observer.observe(el);
-        });
-
-        // Scroll to top functionality
-        window.onscroll = function() {
-            const scrollBtn = document.getElementById('scrollTop');
-            if (document.body.scrollTop > 20 || document.documentElement.scrollTop > 20) {
-                scrollBtn.classList.add('visible');
-            } else {
-                scrollBtn.classList.remove('visible');
+    // Add intersection observer for scroll animations
+    const observer = new IntersectionObserver((entries) => {
+        entries.forEach(entry => {
+            if (entry.isIntersecting) {
+                entry.target.style.transform = "translateY(0)";
+                entry.target.style.opacity = "1";
             }
-        };
+        });
+    }, { threshold: 0.1 });
 
-        function scrollToTop() {
-            window.scrollTo({
-                top: 0,
-                behavior: 'smooth'
-            });
+    document.querySelectorAll('.gradient-border').forEach((el) => {
+        observer.observe(el);
+    });
+
+    // Scroll to top functionality
+    window.onscroll = function() {
+        const scrollBtn = document.getElementById('scrollTop');
+        if (document.body.scrollTop > 20 || document.documentElement.scrollTop > 20) {
+            scrollBtn.classList.add('visible');
+        } else {
+            scrollBtn.classList.remove('visible');
         }
+    };
 
-        // Add hover effects for subject cards
-        document.querySelectorAll('.gradient-border').forEach(card => {
-            card.addEventListener('mouseenter', () => {
-                gsap.to(card.querySelector('.w-12'), {
-                    rotate: -10,
-                    scale: 1.2,
-                    duration: 0.3
-                });
-            });
+    function scrollToTop() {
+        window.scrollTo({
+            top: 0,
+            behavior: 'smooth'
+        });
+    }
 
-            card.addEventListener('mouseleave', () => {
-                gsap.to(card.querySelector('.w-12'), {
-                    rotate: 0,
-                    scale: 1,
-                    duration: 0.3
-                });
+    // Add hover effects for subject cards
+    document.querySelectorAll('.gradient-border').forEach(card => {
+        card.addEventListener('mouseenter', () => {
+            gsap.to(card.querySelector('.w-12'), {
+                rotate: -10,
+                scale: 1.2,
+                duration: 0.3
             });
         });
-    </script>
+
+        card.addEventListener('mouseleave', () => {
+            gsap.to(card.querySelector('.w-12'), {
+                rotate: 0,
+                scale: 1,
+                duration: 0.3
+            });
+        });
+    });
+</script>
 </body>
 </html>
diff --git a/webseite/subject.php b/webseite/subject.php
index b781b5f..641fa22 100644
--- a/webseite/subject.php
+++ b/webseite/subject.php
@@ -109,16 +109,16 @@ $topics = $subjectData->topics;
         .search-container {
             position: fixed;
             top: 0;
-            left: 280px;
             right: 0;
-            padding: 1rem 2rem;
+            padding: 1rem;
             background: var(--card-bg);
             box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
-            transition: left 0.3s ease;
             z-index: 40;
             display: flex;
             align-items: center;
             gap: 1rem;
+            transition: all 0.3s ease;
+            width: auto;
         }
 
         .search-box {
@@ -146,11 +146,12 @@ $topics = $subjectData->topics;
 
         .container {
             display: grid;
-            grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
-            gap: 2rem;
+            grid-template-columns: repeat(auto-fit, minmax(380px, 1fr)); /* Back to original 380px for desktop */
+            gap: 2rem; /* Back to original 2rem gap */
             padding: 2rem;
             max-width: 1600px;
             margin: 0 auto;
+            width: 100%;
         }
 
         .topic-card {
@@ -296,7 +297,31 @@ $topics = $subjectData->topics;
             transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
         }
 
+        @media (min-width: 1025px) {
+            .menu-toggle {
+                display: none;
+            }
+
+            .sidebar {
+                transform: translateX(0);
+            }
+
+            .search-container {
+                left: 280px; /* Sidebar width */
+                width: calc(100% - 280px);
+            }
+
+            .main-content {
+                margin-left: 280px;
+                width: calc(100% - 280px);
+            }
+        }
+
         @media (max-width: 1024px) {
+            .menu-toggle {
+                display: flex !important;
+            }
+
             .sidebar {
                 transform: translateX(-100%);
             }
@@ -305,13 +330,58 @@ $topics = $subjectData->topics;
                 transform: translateX(0);
             }
 
+            .search-container {
+                left: 0;
+                width: 100%;
+                padding-left: 4.5rem;
+            }
+
             .main-content {
                 margin-left: 0;
                 width: 100%;
             }
 
+            .search-box {
+                width: calc(100% - 2rem);
+            }
+        }
+
+        @media (max-width: 768px) {
             .search-container {
-                left: 0;
+                padding: 1rem;
+                padding-left: 4.5rem;
+            }
+
+            .search-box {
+                width: 100%;
+            }
+        }
+
+        @media (max-width: 480px) {
+            .search-container {
+                padding: 0.75rem;
+                padding-left: 4rem; /* Keep space for menu icon */
+            }
+
+            .search-box {
+                font-size: 0.9rem;
+                padding: 0.5rem 0.75rem;
+            }
+
+            .download-links {
+                flex-direction: column;
+            }
+
+            .download-btn {
+                width: 100%;
+            }
+
+            .container {
+                padding: 0.5rem;
+            }
+
+            .topic-card {
+                margin: 0 0.5rem;
             }
         }
 
@@ -320,20 +390,21 @@ $topics = $subjectData->topics;
             top: 1rem;
             left: 1rem;
             z-index: 60;
-            background: white;
+            background: var(--card-bg);
             border: none;
             padding: 0.75rem;
             border-radius: 10px;
             cursor: pointer;
             box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
-            display: none;
+            width: 42px;
+            height: 42px;
+            display: none; /* Hidden by default */
+            align-items: center;
+            justify-content: center;
+            color: var(--text-primary);
+            transition: all 0.3s ease;
         }
 
-        @media (max-width: 1024px) {
-            .menu-toggle {
-                display: block;
-            }
-        }
         /* Add floating animation for icons */
         @keyframes float {
             0%, 100% { transform: translateY(0); }
@@ -523,15 +594,6 @@ $topics = $subjectData->topics;
     <a href="#" class="nav-link">
         <i class="fas fa-book"></i> Kurse
     </a>
-    <a href="#" class="nav-link">
-        <i class="fas fa-trophy"></i> Erfolge
-    </a>
-    <a href="#" class="nav-link">
-        <i class="fas fa-chart-line"></i> Fortschritt
-    </a>
-    <a href="#" class="nav-link">
-        <i class="fas fa-question-circle"></i> Hilfe
-    </a>
 </nav>
 
 <div class="search-container">
@@ -559,13 +621,13 @@ $topics = $subjectData->topics;
                         <h4>Verwandte Themen:</h4>
                         <ul>
                             <?php
-                                foreach ($topicData->relatedTopics as $relatedTopic) {
-                                    ?>
+                            foreach ($topicData->relatedTopics as $relatedTopic) {
+                                ?>
 
-                                    <li><?php echo($relatedTopic); ?></li>
+                                <li><?php echo($relatedTopic); ?></li>
 
-                                    <?php
-                                }
+                                <?php
+                            }
                             ?>
                         </ul>
                     </div>
@@ -574,17 +636,17 @@ $topics = $subjectData->topics;
                     <h4>Übungen herunterladen:</h4>
                     <div class="download-links">
                         <?php
-                            foreach ($topicData->files as $fileName) {
-                                ?>
+                        foreach ($topicData->files as $fileName) {
+                            ?>
 
 
-                                <a href="<?php echo("config/subjects/$subjectData->id/topics/$topicData->id/$fileName")?>" target="_blank" download class="download-btn">
-                                    <i class="fas fa-file-pdf"></i>
-                                    <?php echo($fileName); ?>
-                                </a>
+                            <a href="<?php echo("config/subjects/$subjectData->id/topics/$topicData->id/$fileName")?>" target="_blank" download class="download-btn">
+                                <i class="fas fa-file-pdf"></i>
+                                <?php echo($fileName); ?>
+                            </a>
 
-                                <?php
-                            }
+                            <?php
+                        }
                         ?>
                     </div>
                 </div>
@@ -601,10 +663,101 @@ $topics = $subjectData->topics;
 </div>
 
 <script>
-    function toggleSidebar() {
-        document.querySelector('.sidebar').classList.toggle('active');
+    document.addEventListener('DOMContentLoaded', () => {
+        const menuToggle = document.querySelector('.menu-toggle');
+        const sidebar = document.querySelector('.sidebar');
+        const searchContainer = document.querySelector('.search-container');
+        const mainContent = document.querySelector('.main-content');
+
+        // Function to handle sidebar toggle
+        function toggleSidebar() {
+            sidebar.classList.toggle('active');
+
+            // Add overlay when sidebar is active on mobile/tablet
+            if (window.innerWidth <= 1024) {
+                if (sidebar.classList.contains('active')) {
+                    addOverlay();
+                } else {
+                    removeOverlay();
+                }
+            }
+        }
+
+        // Function to add overlay
+        function addOverlay() {
+            const overlay = document.createElement('div');
+            overlay.className = 'sidebar-overlay';
+            overlay.style.cssText = `
+                position: fixed;
+                top: 0;
+                left: 0;
+                right: 0;
+                bottom: 0;
+                background: rgba(0, 0, 0, 0.5);
+                z-index: 45;
+                transition: opacity 0.3s ease;
+            `;
+            document.body.appendChild(overlay);
+
+            // Close sidebar when clicking overlay
+            overlay.addEventListener('click', () => {
+                sidebar.classList.remove('active');
+                removeOverlay();
+            });
+
+            // Fade in
+            requestAnimationFrame(() => {
+                overlay.style.opacity = '1';
+            });
+        }
+
+        // Function to remove overlay
+        function removeOverlay() {
+            const overlay = document.querySelector('.sidebar-overlay');
+            if (overlay) {
+                overlay.style.opacity = '0';
+                setTimeout(() => overlay.remove(), 300);
+            }
+        }
+
+        // Add click event to menu toggle
+        menuToggle.addEventListener('click', toggleSidebar);
+
+        // Handle window resize
+        let resizeTimer;
+        window.addEventListener('resize', () => {
+            clearTimeout(resizeTimer);
+            resizeTimer = setTimeout(() => {
+                if (window.innerWidth > 1024) {
+                    sidebar.classList.remove('active');
+                    removeOverlay();
+                }
+            }, 250);
+        });
+
+        // Handle escape key to close sidebar
+        document.addEventListener('keydown', (e) => {
+            if (e.key === 'Escape' && sidebar.classList.contains('active')) {
+                sidebar.classList.remove('active');
+                removeOverlay();
+            }
+        });
+    });
+
+    // Add this right after your existing toggleSidebar function
+    function updateMenuVisibility() {
+        const menuToggle = document.querySelector('.menu-toggle');
+        if (window.innerWidth <= 768) { // Smartphone breakpoint
+            menuToggle.style.display = 'flex';
+        } else {
+            menuToggle.style.display = 'none';
+        }
     }
 
+    // Add event listeners
+    window.addEventListener('load', updateMenuVisibility);
+    window.addEventListener('resize', updateMenuVisibility);
+
     // Animate progress bars on load
     document.addEventListener('DOMContentLoaded', () => {
         const progressBars = document.querySelectorAll('.progress-bar');
@@ -671,9 +824,11 @@ $topics = $subjectData->topics;
         const progressBars = document.querySelectorAll('.progress-bar');
         progressBars.forEach(bar => {
             const progressElement = bar.querySelector('.progress');
-            setTimeout(() => {
-                progressElement.style.width = '100%';
-            }, 300);
+            if (progressElement) { // Add null check
+                setTimeout(() => {
+                    progressElement.style.width = '100%';
+                }, 300);
+            }
         });
     });
 
@@ -714,29 +869,42 @@ $topics = $subjectData->topics;
     // Add card hover effects
     document.querySelectorAll('.topic-card').forEach(card => {
         card.addEventListener('mouseenter', () => {
-            gsap.to(card.querySelector('.topic-icon'), {
-                rotate: -10,
-                scale: 1.2,
-                duration: 0.3
-            });
+            const icon = card.querySelector('.topic-icon');
+            if (window.gsap) {
+                gsap.to(icon, {
+                    rotate: -10,
+                    scale: 1.2,
+                    duration: 0.3
+                });
+            } else {
+                // Fallback animation using CSS
+                icon.style.transform = 'rotate(-10deg) scale(1.2)';
+            }
         });
 
         card.addEventListener('mouseleave', () => {
-            gsap.to(card.querySelector('.topic-icon'), {
-                rotate: 0,
-                scale: 1,
-                duration: 0.3
-            });
+            const icon = card.querySelector('.topic-icon');
+            if (window.gsap) {
+                gsap.to(icon, {
+                    rotate: 0,
+                    scale: 1,
+                    duration: 0.3
+                });
+            } else {
+                // Fallback animation using CSS
+                icon.style.transform = 'none';
+            }
         });
     });
 
+    // Update search function with fallback animation
     function handleSearch() {
         const searchTerm = document.getElementById('searchInput').value.toLowerCase();
         const topicCards = document.querySelectorAll('.topic-card');
 
         topicCards.forEach(card => {
-            const title = card.querySelector('.topic-title').textContent.toLowerCase();
-            const description = card.querySelector('.topic-description').textContent.toLowerCase();
+            const title = card.querySelector('.topic-title')?.textContent.toLowerCase() || '';
+            const description = card.querySelector('.topic-description')?.textContent.toLowerCase() || '';
             const relatedTopics = Array.from(card.querySelectorAll('.related-topics li'))
                 .map(li => li.textContent.toLowerCase())
                 .join(' ');
@@ -745,17 +913,60 @@ $topics = $subjectData->topics;
 
             if (content.includes(searchTerm)) {
                 card.style.display = 'block';
-                // Optional: Add animation for appearing cards
-                gsap.to(card, {
-                    opacity: 1,
-                    y: 0,
-                    duration: 0.3
-                });
+                if (window.gsap) {
+                    gsap.to(card, {
+                        opacity: 1,
+                        y: 0,
+                        duration: 0.3
+                    });
+                } else {
+                    card.style.opacity = 1;
+                    card.style.transform = 'translateY(0)';
+                }
             } else {
                 card.style.display = 'none';
             }
         });
     }
+
+    // Update the menu visibility JavaScript
+    document.addEventListener('DOMContentLoaded', () => {
+        const menuToggle = document.querySelector('.menu-toggle');
+        const sidebar = document.querySelector('.sidebar');
+
+        // Force correct initial state based on viewport
+        function updateMenuState() {
+            if (window.innerWidth <= 1024) {
+                menuToggle.style.display = 'flex';
+                sidebar.style.transform = 'translateX(-100%)';
+            } else {
+                menuToggle.style.display = 'none';
+                sidebar.style.transform = 'translateX(0)';
+            }
+        }
+
+        // Initial state
+        updateMenuState();
+
+        // Update on resize with debounce
+        let resizeTimer;
+        window.addEventListener('resize', () => {
+            clearTimeout(resizeTimer);
+            resizeTimer = setTimeout(updateMenuState, 250);
+        });
+
+        // Toggle sidebar
+        menuToggle.addEventListener('click', () => {
+            const isHidden = sidebar.style.transform === 'translateX(-100%)';
+            sidebar.style.transform = isHidden ? 'translateX(0)' : 'translateX(-100%)';
+
+            if (isHidden) {
+                addOverlay();
+            } else {
+                removeOverlay();
+            }
+        });
+    });
 </script>
 
 <!-- Code injected by live-server -->