:root {
  --color-brand-primary: #155DFC;
  --color-brand-primary-hover: #2563EB;
  --color-brand-secondary: #A855F7;
  --color-bg-primary: #F7F9FC;
  --color-bg-secondary: #FFFFFF;
  --color-bg-tertiary: #F9FAFB;
  --color-text-primary: #111827;
  --color-text-secondary: #4B5563;
  --color-text-tertiary: #6B7280;
  --color-border-default: #E5E7EB;
  --color-border-medium: #D1D5DB;
  --color-neutral-100: #F3F4F6;
  --color-neutral-200: #E5E7EB;
  --color-neutral-500: #6B7280;
  --color-neutral-900: #111827;
  --color-study-imaging: #A855F7;
  --color-study-imaging-light: #F3E8FF;
  --color-study-lab: #10B981;
  --color-study-lab-light: #D1FAE5;
  --color-study-consultation: #3B82F6;
  --color-study-consultation-light: #DBEAFE;
  --color-study-treatment: #F97316;
  --color-study-treatment-light: #FFEDD5;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --font-family-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
}