:root {
  /* Color */
  --background: #0b0d10;
  --surface: #11151a;
  --surface-hover: #161b21;
  --surface-raised: #14181e;
  --border: #252a31;
  --border-strong: #323942;
  --text-primary: #f1f3f5;
  --text-secondary: #9aa3ae;
  --text-tertiary: #6b7280;
  --accent: #5b8cff;
  --accent-dim: #3f5fb0;
  --accent-soft: rgba(91, 140, 255, 0.1);
  --success: #4ade80;
  --danger: #f87171;

  /* Typography */
  --font-fa: "Vazirmatn", "Vazirmatn FD", Tahoma, sans-serif;
  --font-en: "Vazirmatn", "JetBrains Mono", "Consolas", monospace;

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;

  /* Layout */
  --content-width: 1140px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --navbar-height: 76px;
  --navbar-height-compact: 60px;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-fast: 150ms;
  --duration-base: 250ms;
  --duration-slow: 400ms;

  /* Shadow */
  --shadow-card: 0 8px 24px -12px rgba(0, 0, 0, 0.55);
  --shadow-modal: 0 24px 64px -20px rgba(0, 0, 0, 0.7);
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --duration-fast: 0ms;
    --duration-base: 0ms;
    --duration-slow: 0ms;
  }
}