Split into subpages, move menu to sidebar, restrict hero image size

styles.css

@@ -73,10 +73,23 @@ body {
 }
 
 /* Layout */
+.page-layout {
+    display: flex;
+    flex-direction: column;
+    min-height: 100vh;
+    padding: 2rem;
+    gap: 2rem;
+}
+
+@media(min-width: 900px) {
+    .page-layout {
+        flex-direction: row;
+    }
+}
+
 .container {
+    flex: 1;
     max-width: 900px;
-    margin: 0 auto;
-    padding: 4rem 1.5rem;
     display: flex;
     flex-direction: column;
     gap: 2.5rem;
@@ -273,34 +286,57 @@ p {
     transform: translateY(0);
 }
 
-/* Neue CSS-Klassen für Navbar, Hero-Image, Events, Impressum */
-.navbar {
+/* Neue CSS-Klassen für Sidebar, Hero-Image, Events, Impressum */
+.sidebar {
     position: sticky;
-    top: 20px;
+    top: 2rem;
+    height: fit-content;
+    width: 100%;
     z-index: 100;
-    margin: 0 auto;
-    max-width: 900px;
-    padding: 1rem;
-    border-radius: 50px;
+    padding: 2rem;
+    border-radius: 24px;
+    display: flex;
+    flex-direction: column;
+    gap: 2rem;
+}
+
+@media(min-width: 900px) {
+    .sidebar {
+        width: 300px;
+    }
+}
+
+.sidebar-logo {
+    text-align: center;
+}
+
+.logo-small {
+    width: 150px;
+    height: auto;
+    filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.1));
 }
 
 .nav-links {
     list-style: none;
     display: flex;
-    justify-content: center;
-    gap: 2rem;
-    flex-wrap: wrap;
+    flex-direction: column;
+    gap: 1.5rem;
 }
 
 .nav-links a {
     text-decoration: none;
     color: var(--text-primary);
     font-weight: 500;
+    font-size: 1.2rem;
     transition: color 0.3s ease;
+    display: block;
+    padding: 0.5rem 1rem;
+    border-radius: 12px;
 }
 
-.nav-links a:hover {
+.nav-links a:hover, .nav-links a.active {
     color: var(--accent-green);
+    background: rgba(255,255,255,0.3);
 }
 
 .hero-image-container {
@@ -308,6 +344,9 @@ p {
     border-radius: 16px;
     overflow: hidden;
     box-shadow: 0 10px 30px rgba(0,0,0,0.1);
+    max-height: 400px;
+    display: flex;
+    justify-content: center;
 }
 
 .hero-image {