:root {
  /* Doraemon Core Palette */
  --doraemon-blue: #0098D4;
  --doraemon-blue-dark: #006B9F;
  --doraemon-blue-light: #4DB8E0;
  --doraemon-blue-bg: #E8F4FA;
  --doraemon-white: #FFFFFF;
  --doraemon-red: #E60012;
  --doraemon-red-dark: #B8000E;
  --doraemon-yellow: #FFD700;
  --doraemon-yellow-light: #FFF3B0;
  --door-pink: #FF69B4;
  --door-pink-dark: #E0559E;
  --dorayaki-brown: #8B4513;
  --dorayaki-light: #D2A679;
  --dorayaki-bg: #FFF8F0;

  /* Neutrals */
  --color-bg: #F5F9FC;
  --color-text: #1A1A2E;
  --color-text-muted: #6B7280;
  --color-text-light: #9CA3AF;
  --color-surface: #FFFFFF;
  --color-border: #E5E7EB;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 4rem;
  --space-2xl: 8rem;

  /* Typography */
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Poppins', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 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;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --shadow-blue: 0 4px 20px rgba(0, 152, 212, 0.3);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;

  /* Z-index layers */
  --z-base: 1;
  --z-nav: 100;
  --z-overlay: 200;
  --z-door: 300;
  --z-top: 999;
}