/* Default Theme — Professional Blue */
:root {
  /* Semantic Tokens */
  --color-primary: #1a56db;
  --color-primary-dark: #1e429f;
  --color-surface: #ffffff;
  --color-bg: #f8fafc;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-text-light: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  --color-danger: #dc2626;
  --color-success: #16a34a;
  --color-warning: #d97706;

  /* Compatibility Tokens */
  --color-primary-hover: #1f4fbf;
  --color-primary-light: #dbeafe;
  --color-primary-border: #bfdbfe;
  --color-success-light: #dcfce7;
  --color-danger-light: #fee2e2;
  --color-warning-light: #fef3c7;
  --color-info: #2563eb;
  --color-info-light: #dbeafe;

  --color-white: #ffffff;
  --color-black: #020617;
  --color-gray-50: #f8fafc;
  --color-gray-100: #f1f5f9;
  --color-gray-200: #e2e8f0;
  --color-gray-300: #cbd5e1;
  --color-gray-400: #94a3b8;
  --color-gray-500: #64748b;
  --color-gray-600: #475569;
  --color-gray-700: #334155;
  --color-gray-800: #1e293b;
  --color-gray-900: #0f172a;

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.8125rem;
  --text-base: 0.875rem;
  --text-md: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;

  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  --leading-none: 1;
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-2xl: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 8px rgba(15, 23, 42, 0.08), 0 2px 4px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 8px 24px rgba(15, 23, 42, 0.1);
  --shadow-xl: 0 20px 40px rgba(15, 23, 42, 0.12);

  /* Transitions */
  --ease-fast: 150ms ease;
  --ease-base: 200ms ease;
  --ease-slow: 300ms ease;
  --ease-spring: 200ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Z-Index */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-header: 300;
  --z-overlay: 400;
  --z-modal: 500;
  --z-toast: 600;

  /* Layout */
  --max-w-site: 1280px;
  --max-w-narrow: 800px;
  --header-h: 56px;
  --sidebar-w: 240px;
}