:root {
  /* Colors */
  --color-black: #0a0a0a;
  --color-dark: #1a1a1a;
  --color-grey-900: #2d2d2d;
  --color-grey-700: #555;
  --color-grey-500: #888;
  --color-grey-300: #c4c4c4;
  --color-grey-200: #ddd;
  --color-grey-100: #f0f0f0;
  --color-white: #fafafa;
  --color-pure-white: #fff;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.25rem;
  --text-xl: 1.5rem;
  --text-2xl: 2rem;
  --text-3xl: 2.5rem;
  --text-hero: 3.5rem;

  --leading-tight: 1.2;
  --leading-normal: 1.6;
  --leading-relaxed: 1.8;

  --tracking-tight: -0.01em;
  --tracking-normal: 0;
  --tracking-wide: 0.05em;
  --tracking-wider: 0.08em;

  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 800px;
  --content-padding: 2rem;
  --section-padding: 6rem;
  --section-padding-lg: 8rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Borders & Radius */
  --border-light: 1px solid var(--color-grey-200);
  --border-subtle: 1px solid var(--color-grey-100);
  --radius: 6px;
  --radius-lg: 10px;
}