/* === Design Tokens === */
:root {
  /* Colors — dark mode only */
  --color-bg-primary: #0a0a0a;
  --color-bg-secondary: #141414;
  --color-bg-tertiary: #1e1e1e;
  --color-text-primary: #f0f0f0;
  --color-text-secondary: #a0a0a0;
  --color-accent: #4a9eff;
  --color-accent-hover: #6bb3ff;
  --color-border: #2a2a2a;
  --color-overlay: rgba(0, 0, 0, 0.85);

  /* Typography */
  --font-primary: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Share Tech Mono', ui-monospace, monospace;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Font sizes */
  --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: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3.5rem;

  /* 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;

  /* Layout */
  --content-max-width: 900px;
  --grid-max-width: 1560px;
  --navbar-height: 64px;

  /* Borders */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

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

  /* Shadows */
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-card-hover: 0 8px 32px rgba(0, 0, 0, 0.6);
}