feat: Website-Rework mit verbessertem Design, Sicherheit und Deployment

- Neue About/Skills-Sektion hinzugefügt
- Verbesserte UI/UX für alle Komponenten
- Enhanced Contact Form mit Validierung
- Verbesserte Security Headers und Middleware
- Sichere Deployment-Skripte (safe-deploy.sh)
- Zero-Downtime Deployment Support
- Verbesserte Docker-Sicherheit
- Umfassende Sicherheits-Dokumentation
- Performance-Optimierungen
- Accessibility-Verbesserungen

app/globals.css

@@ -40,6 +40,11 @@
   border-color: hsl(var(--border));
 }
 
+html {
+  scroll-behavior: smooth;
+  scroll-padding-top: 80px;
+}
+
 body {
   background-color: hsl(var(--background));
   color: hsl(var(--foreground));
@@ -71,17 +76,26 @@ body {
 
 /* Glassmorphism Effects */
 .glass {
-  background: rgba(15, 15, 15, 0.8);
-  backdrop-filter: blur(20px);
+  background: rgba(15, 15, 15, 0.85);
+  backdrop-filter: blur(20px) saturate(180%);
+  -webkit-backdrop-filter: blur(20px) saturate(180%);
   border: 1px solid rgba(255, 255, 255, 0.1);
   box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
 }
 
 .glass-card {
-  background: rgba(15, 15, 15, 0.6);
-  backdrop-filter: blur(16px);
+  background: rgba(15, 15, 15, 0.7);
+  backdrop-filter: blur(16px) saturate(180%);
+  -webkit-backdrop-filter: blur(16px) saturate(180%);
   border: 1px solid rgba(255, 255, 255, 0.1);
   box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
+  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
+}
+
+.glass-card:hover {
+  background: rgba(15, 15, 15, 0.8);
+  border-color: rgba(255, 255, 255, 0.15);
+  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
 }
 
 /* Admin Panel Specific Glassmorphism */
@@ -523,18 +537,24 @@ select.form-input-enhanced:focus {
   background: linear-gradient(135deg, #3b82f6, #1d4ed8);
   color: white;
   padding: 0.75rem 1.5rem;
-  border-radius: 8px;
-  font-weight: 500;
-  transition: all 0.3s ease;
+  border-radius: 12px;
+  font-weight: 600;
+  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
   border: none;
   cursor: pointer;
   position: relative;
   overflow: hidden;
+  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.3);
 }
 
 .btn-primary:hover {
   transform: translateY(-2px);
-  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
+  box-shadow: 0 8px 30px rgba(59, 130, 246, 0.5);
+  background: linear-gradient(135deg, #2563eb, #1e40af);
+}
+
+.btn-primary:active {
+  transform: translateY(0);
 }
 
 .btn-primary::before {
@@ -552,9 +572,29 @@ select.form-input-enhanced:focus {
   left: 100%;
 }
 
+.btn-secondary {
+  background: transparent;
+  color: #e5e7eb;
+  padding: 0.75rem 1.5rem;
+  border-radius: 12px;
+  font-weight: 600;
+  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
+  border: 2px solid rgba(75, 85, 99, 0.5);
+  cursor: pointer;
+  position: relative;
+  overflow: hidden;
+}
+
+.btn-secondary:hover {
+  border-color: rgba(75, 85, 99, 0.8);
+  background: rgba(31, 41, 55, 0.5);
+  transform: translateY(-2px);
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
+}
+
 /* Card Hover Effects */
 .card-hover {
-  transition: all 0.3s ease;
+  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
   cursor: pointer;
 }
 
@@ -563,6 +603,14 @@ select.form-input-enhanced:focus {
   box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
 }
 
+/* Line clamp utility */
+.line-clamp-3 {
+  display: -webkit-box;
+  -webkit-line-clamp: 3;
+  -webkit-box-orient: vertical;
+  overflow: hidden;
+}
+
 /* Loading Animation */
 @keyframes pulse {
   0%, 100% { opacity: 1; }
@@ -589,6 +637,44 @@ select.form-input-enhanced:focus {
   animation: fadeInUp 0.6s ease-out;
 }
 
+/* Focus visible improvements */
+*:focus-visible {
+  outline: 2px solid #3b82f6;
+  outline-offset: 2px;
+  border-radius: 4px;
+}
+
+/* Selection styling */
+::selection {
+  background-color: rgba(59, 130, 246, 0.3);
+  color: #ffffff;
+}
+
+::-moz-selection {
+  background-color: rgba(59, 130, 246, 0.3);
+  color: #ffffff;
+}
+
+/* Improved scrollbar for webkit */
+::-webkit-scrollbar {
+  width: 10px;
+  height: 10px;
+}
+
+::-webkit-scrollbar-track {
+  background: hsl(var(--background));
+}
+
+::-webkit-scrollbar-thumb {
+  background: linear-gradient(180deg, #3b82f6, #1d4ed8);
+  border-radius: 5px;
+  border: 2px solid hsl(var(--background));
+}
+
+::-webkit-scrollbar-thumb:hover {
+  background: linear-gradient(180deg, #2563eb, #1e40af);
+}
+
 /* Responsive Design */
 @media (max-width: 768px) {
   .markdown h1 {
@@ -602,4 +688,8 @@ select.form-input-enhanced:focus {
   .markdown h3 {
     font-size: 1.25rem;
   }
+
+  .domain-text {
+    font-size: 2rem;
+  }
 }