:root {
  /* Background colors */
  --color-bg-primary: #0a0a0f;
  --color-bg-secondary: #12121a;
  --color-bg-card: #1a1a25;
  --color-bg-card-hover: #222233;
  --color-surface: #2a2a3a;

  /* Border colors */
  --color-border: #2a2a3a;
  --color-border-subtle: #1e1e2e;

  /* Text colors */
  --color-text-primary: #e8e8f0;
  --color-text-secondary: #9898a8;
  --color-text-muted: #686878;

  /* Accent colors */
  --color-accent-primary: #e63946;
  --color-accent-secondary: #44d492;

  /* Per-feature accent colors */
  --color-codefirst: #e63946;
  --color-rendering: #f97316;
  --color-sprites: #44d492;
  --color-editor: #ec4899;
  --color-ui: #c084fc;
  --color-vfx: #f43f5e;
  --color-physics: #10b981;
  --color-text-render: #f97316;
  --color-assets: #64748b;
  --color-audio: #eab308;
  --color-input: #06b6d4;
  --color-tweens: #8b5cf6;
  --color-platform: #0ea5e9;
  --color-networking: #14b8a6;

  /* Typography */
  --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-family-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --font-size-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --font-size-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --font-size-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --font-size-lg: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --font-size-xl: clamp(1.5rem, 1.2rem + 1.5vw, 2.25rem);
  --font-size-2xl: clamp(2rem, 1.5rem + 2.5vw, 3.5rem);
  --font-size-hero: clamp(2.5rem, 2rem + 3vw, 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;
  --space-section: clamp(4rem, 3rem + 5vw, 8rem);

  /* Layout */
  --container-max: 1280px;
  --container-padding: clamp(1rem, 2vw, 2rem);
  --card-border-radius: 12px;
  --border-radius-sm: 6px;
  --border-radius-lg: 16px;

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

  /* Shadows */
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-card-hover: 0 8px 40px rgba(0, 0, 0, 0.5);
}