:root {
  /* Brand Colors */
  --color-bg-primary: #0a0a0f;
  --color-bg-secondary: #12121a;
  --color-bg-tertiary: #1a1a28;
  --color-bg-card: #16161f;
  --color-bg-card-hover: #1e1e2e;
  --color-bg-overlay: rgba(10, 10, 15, 0.85);

  --color-accent: #00e5c8;
  --color-accent-hover: #00ffdd;
  --color-accent-glow: rgba(0, 229, 200, 0.3);
  --color-accent-subtle: rgba(0, 229, 200, 0.08);
  --color-accent-gradient: linear-gradient(135deg, #00e5c8, #00b4a0);
  --color-accent-gradient-card: linear-gradient(160deg, rgba(0, 229, 200, 0.15), transparent 60%);

  --color-text-primary: #ffffff;
  --color-text-secondary: #c8c8d4;
  --color-text-muted: #6a6a7a;
  --color-text-accent: #00e5c8;

  --color-border: rgba(255, 255, 255, 0.06);
  --color-border-accent: rgba(0, 229, 200, 0.2);
  --color-border-hover: rgba(0, 229, 200, 0.4);

  --color-success: #00c853;
  --color-warning: #ffc107;
  --color-error: #ff3d57;
  --color-info: #29b6f6;

  /* Typography */
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 0.9rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3.5rem;
  --text-6xl: 4.5rem;
  --text-hero: clamp(2.5rem, 6vw, 5.5rem);
  --text-hero-sub: clamp(1rem, 2vw, 1.5rem);

  --weight-light: 300;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-extrabold: 800;

  --line-height-tight: 1.1;
  --line-height-snug: 1.3;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.8;

  --letter-spacing-tight: -0.02em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.05em;
  --letter-spacing-wider: 0.1em;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;
  --space-section: clamp(4rem, 10vh, 8rem);

  /* Layout */
  --container-max: 1280px;
  --container-narrow: 960px;
  --container-wide: 1440px;
  --container-padding: clamp(1.5rem, 4vw, 3rem);

  /* Borders */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 50%;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 16px 50px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 20px var(--color-accent-glow);
  --shadow-glow-lg: 0 0 40px var(--color-accent-glow);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  --transition-spring: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);

  /* Z-Index Scale */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-overlay: 400;
  --z-modal: 500;
  --z-toast: 600;
}