:root {
  /* Colors - Light Theme */
  --color-primary: #3B82F6;
  --color-primary-hover: #2563EB;
  --color-secondary: #10B981;
  --color-background: #F9FAFB;
  --color-surface: #FFFFFF;
  --color-surface-hover: #F3F4F6;
  --color-text: #111827;
  --color-text-secondary: #6B7280;
  --color-border: #E5E7EB;
  --color-error: #EF4444;
  --color-error-bg: #FEF2F2;
  --color-success: #10B981;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans KR', sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;

  /* Spacing & Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --transition: 0.2s ease;
}

:root.dark {
  --color-primary: #60A5FA;
  --color-primary-hover: #93C5FD;
  --color-secondary: #34D399;
  --color-background: #111827;
  --color-surface: #1F2937;
  --color-surface-hover: #374151;
  --color-text: #F9FAFB;
  --color-text-secondary: #9CA3AF;
  --color-border: #374151;
  --color-error: #F87171;
  --color-error-bg: #451a1a;
  --color-success: #34D399;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
}