:root {
  /* ========== Brand Colors ========== */
  --color-gold: #c9a96e;
  --color-gold-hover: #b8954d;
  --color-gold-light: #f5efd8;
  --color-gold-dark: #a07d3a;

  /* ========== Neutral Palette ========== */
  --color-white: #ffffff;
  --color-bg: #f5f5f0;
  --color-surface: #ffffff;
  --color-sidebar-bg: #1a1a2e;
  --color-sidebar-hover: #2a2a3e;
  --color-sidebar-text: #e0e0e0;
  --color-sidebar-active: var(--color-gold);
  --color-topbar-bg: #ffffff;
  --color-topbar-border: #e5e7eb;

  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  /* ========== Text Colors ========== */
  --color-text: #1a1a2e;
  --color-text-secondary: var(--color-gray-500);
  --color-text-muted: var(--color-gray-400);
  --color-text-inverse: #ffffff;
  --color-text-on-gold: #1a1a2e;

  /* ========== Semantic Colors ========== */
  --color-success: #22c55e;
  --color-success-bg: #f0fdf4;
  --color-success-border: #bbf7d0;
  --color-error: #ef4444;
  --color-error-bg: #fef2f2;
  --color-error-border: #fecaca;
  --color-warning: #f59e0b;
  --color-warning-bg: #fffbeb;
  --color-warning-border: #fde68a;
  --color-info: #3b82f6;
  --color-info-bg: #eff6ff;
  --color-info-border: #bfdbfe;

  /* ========== Borders ========== */
  --color-border: var(--color-gray-200);
  --color-border-light: var(--color-gray-100);
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-full: 9999px;

  /* ========== Typography ========== */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', 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;
  --text-5xl: 3rem;

  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

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

  /* ========== Spacing (4px base) ========== */
  --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;
  --space-20: 5rem;
  --space-24: 6rem;

  /* ========== Shadows ========== */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

  /* ========== Transitions ========== */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.2s ease;
  --transition-slow: 0.3s ease;

  /* ========== Layout ========== */
  --sidebar-width: 240px;
  --topbar-height: 56px;
  --content-max-width: 1200px;
}