:root {
  /* Colors */
  --primary: #0f766e; /* Teal 700 - Güven veren tıbbi yeşil/mavi */
  --primary-light: #14b8a6; /* Teal 500 */
  --primary-dark: #0f52ba; /* Deep medical blue */
  --secondary: #0369a1; /* Sky 700 - İkincil tıbbi mavi */
  --secondary-light: #0ea5e9; /* Sky 500 */
  
  --accent: #eab308; /* Yellow 500 - Dikkat çekici butonlar için */
  --accent-hover: #ca8a04;
  
  --bg-main: #f8fafc; /* Slate 50 - Genel arka plan */
  --bg-white: #ffffff;
  --bg-light: #f1f5f9; /* Slate 100 - Kart arka planları / hover */
  --bg-dark: #0f172a; /* Slate 900 - Koyu arka plan (Footer) */
  
  --text-main: #1e293b; /* Slate 800 - Ana metinler */
  --text-muted: #64748b; /* Slate 500 - Alt başlıklar, açıklamalar */
  --text-light: #f8fafc;
  
  --border-color: #e2e8f0; /* Slate 200 */
  
  /* Typography */
  --font-body: 'Inter', sans-serif;
  --font-heading: 'Outfit', sans-serif;
  
  /* Spacing */
  --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;
  --space-16: 4rem;
  --space-24: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 300ms ease-in-out;
}