style(fe): apply KBX v60 high-end design tokens, glassmorphism, and tactile micro-animations

frontend/src/design-system/tokens.css

@@ -73,6 +73,21 @@
   
   --ks-focus-ring-width: 2px;
   --ks-focus-ring-offset: 1px;
+
+  /* KBX v60 High-End Elevation & Glassmorphism System */
+  --ks-shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
+  --ks-shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
+  --ks-shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
+  --ks-shadow-glow: 0 0 16px rgba(37, 99, 235, 0.25);
+  --ks-shadow-danger-glow: 0 0 16px rgba(220, 38, 38, 0.25);
+  
+  --ks-glass-bg: rgba(255, 255, 255, 0.85);
+  --ks-glass-border: rgba(226, 232, 240, 0.8);
+  --ks-glass-backdrop: blur(12px);
+
+  /* Micro-animation Cubic Bezier Curves */
+  --ks-transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
+  --ks-transition-smooth: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
 }
 
 /* Dark Mode Theme Tokens */
@@ -91,6 +106,7 @@
   --ks-shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.3);
   --ks-shadow-md: 0 4px 12px -2px rgba(0, 0, 0, 0.4);
   --ks-shadow-lg: 0 12px 32px -4px rgba(0, 0, 0, 0.5);
+  --ks-shadow-glow: 0 0 20px rgba(59, 130, 246, 0.35);
 }
 
 [data-density='compact'] {