[data-theme="dark"] {
  --bg: #0B1120;--surface: #131C2E;--surface2: #1A2540;--border: #1E293B;
  --text: #F1F5F9;--text-muted: #94A3B8;--text-light: #475569;
  --sidebar-bg: #080E1A;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 10px 32px rgba(0,0,0,0.5);
}