:root {
  /* ============================
     Color Palette - Dark Luxury
     ============================ */
  --color-bg-primary: #0b0e14;   /* Very dark blue/charcoal */
  --color-bg-secondary: #0a192f; /* Deep midnight blue */
  --color-bg-accent: #151d29;    /* Slightly lighter for cards */

  --color-text-primary: #f0f2f5; /* Off-white for high contrast */
  --color-text-secondary: #a8b2d1; /* Muted blue-grey */
  --color-text-accent: #d4af37;    /* Metallic Gold */
  
  --color-primary: #d4af37;      /* Gold - Main Action */
  --color-primary-hover: #b5952f;
  --color-secondary: #64ffda;    /* Teal/Cyan - Subtle Highlights (Medical feel) */
  
  --color-border: rgba(212, 175, 55, 0.2); /* Subtle Gold Border */
  --color-overlay: rgba(11, 14, 20, 0.85);

  /* ============================
     Typography
     ============================ */
  --font-heading: 'Playfair Display', serif;
  --font-body: 'Inter', sans-serif;

  --text-xs: 0.75rem;    /* 12px */
  --text-sm: 0.875rem;   /* 14px */
  --text-base: 1rem;     /* 16px */
  --text-lg: 1.125rem;   /* 18px */
  --text-xl: 1.25rem;    /* 20px */
  --text-2xl: 1.5rem;    /* 24px */
  --text-3xl: 2rem;      /* 32px - Section Headers */
  --text-4xl: 2.5rem;    /* 40px */
  --text-display: 4rem;  /* 64px - Hero */

  /* ============================
     Spacing & Layout
     ============================ */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-24: 6rem; /* Section Gap */
  
  --container-max-width: 1280px;
  --container-padding: 1.5rem;
  --header-height: 80px;

  /* ============================
     Effects & Animation
     ============================ */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px rgba(212, 175, 55, 0.15); /* Gold Glow */

  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

@media (max-width: 768px) {
  :root {
    --text-display: 2.5rem;
    --spacing-24: 4rem;
  }
}