:root {
  --primary: #667eea;
  --primary-dark: #764ba2;
  --primary-light: #f0f3ff;
  --success: #10b981;
  --danger: #ef4444;
  --text-primary: #111827;
  --text-secondary: #4b5563;
  --text-tertiary: #6b7280;
  --text-quaternary: #9ca3af;
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --border-light: #e5e7eb;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-lg: 0 8px 24px rgba(102, 126, 234, 0.15);
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --bg-features: #f0f7ff;
  --bg-styles: #fdf2f8;
  --bg-cases: #f5f5f5;
}