:root {
  /* Colors */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a2e;
  --text-primary: #f0f0f0;
  --text-secondary: #a0a0b0;
  --text-muted: #6a6a7a;
  --brand-purple: #6c5ce7;
  --brand-purple-light: #8b7cf7;
  --cta-green: #00d4aa;
  --cta-green-light: #00f0c0;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);

  /* Typography */
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --fs-hero: clamp(2.5rem, 2rem + 3vw, 4.5rem);
  --fs-h2: clamp(1.8rem, 1.5rem + 2vw, 3rem);
  --fs-h3: clamp(1.2rem, 1rem + 1vw, 1.75rem);
  --fs-body: clamp(0.95rem, 0.9rem + 0.25vw, 1.1rem);
  --fs-small: 0.875rem;
  --fs-label: 0.75rem;
  --lh-tight: 1.15;
  --lh-normal: 1.6;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --container-max: 1200px;
  --container-padding: clamp(1rem, 3vw, 2rem);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  /* Animation */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 200ms;
  --duration-normal: 400ms;
  --duration-slow: 800ms;

  /* Shadows */
  --glow-purple: 0 0 40px rgba(108, 92, 231, 0.3);
  --glow-green: 0 0 40px rgba(0, 212, 170, 0.3);
}