Build [v1.4.1] - Security hardening, PWA and UI refinements

frontend/app/globals.css

@@ -36,8 +36,27 @@ body {
   background: #334155; /* slate-700 */
 }
 
-/* Support for Firefox (limited) */
-* {
-  scrollbar-width: thin;
-  scrollbar-color: #1e293b #020617;
+/* Modern Utility for Premium Glassmorphism */
+@layer utilities {
+  .glass-card {
+    @apply bg-slate-900/40 backdrop-blur-xl border border-slate-800/50 shadow-2xl;
+    background-image: linear-gradient(135deg, rgba(255,255,255,0.02) 0%, rgba(255,255,255,0) 100%);
+  }
+  
+  .text-fluid-lg {
+    font-size: clamp(1.125rem, 3cqi, 1.5rem);
+  }
+  
+  .text-fluid-xl {
+    font-size: clamp(1.5rem, 5cqi, 2.25rem);
+  }
+}
+
+/* Safe Area Insets for Modern Mobile Devices (iOS Notch/Home Bar) */
+.pb-safe {
+  padding-bottom: env(safe-area-inset-bottom);
+}
+
+.pt-safe {
+  padding-top: env(safe-area-inset-top);
 }