:root {
  /* Colors - Elegant Dark/Light Theme */
  --color-bg: #FFFFFF;
  --color-surface: #F5F5F5;
  --color-surface-hover: #EEEEEE;
  --color-text: #1A1A1A;
  --color-text-secondary: #6B7280;
  --color-text-muted: #9CA3AF;
  --color-primary: #111111;
  --color-primary-hover: #333333;
  --color-accent: #D4A853;
  --color-accent-hover: #C49A45;
  --color-accent-light: rgba(212, 168, 83, 0.1);
  --color-border: #E5E7EB;
  --color-border-light: #F0F0F0;
  --color-dark-bg: #0D0D0D;
  --color-dark-surface: #1A1A1A;
  --color-dark-text: #FFFFFF;
  --color-dark-text-secondary: #A0A0A0;
  --color-success: #10B981;
  --color-success-bg: rgba(16, 185, 129, 0.1);
  --color-danger: #EF4444;
  --color-danger-bg: rgba(239, 68, 68, 0.1);
  --color-warning: #F59E0B;
  --color-warning-bg: rgba(245, 158, 11, 0.1);
  --color-info: #3B82F6;
  --color-info-bg: rgba(59, 130, 246, 0.1);
  --color-overlay: rgba(0, 0, 0, 0.6);
  --color-card-shadow: rgba(0, 0, 0, 0.06);

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Outfit', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;

  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-extrabold: 800;

  --leading-tight: 1.2;
  --leading-normal: 1.5;
  --leading-relaxed: 1.7;

  /* 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;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px var(--color-card-shadow);
  --shadow-sm: 0 2px 8px var(--color-card-shadow);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  --transition-spring: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Layout */
  --container-max: 1280px;
  --container-narrow: 960px;
  --nav-height: 72px;
  --sidebar-width: 260px;

  /* Z-indices */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
}