:root {
  /* Color System - Premium Palette */
  /* Primary: Deep Navy / Ink - Refined */
  --color-primary-900: #0A1628;
  /* Deepest, richer ink */
  --color-primary-800: #0F2137;
  --color-primary-700: #1A3150;

  /* Secondary: Sophisticated Neutrals */
  --color-neutral-900: #0D0D0D;
  --color-neutral-800: #1A1A1A;
  --color-neutral-700: #2D2D2D;
  --color-neutral-600: #4A5568;
  --color-neutral-500: #718096;
  --color-neutral-400: #A0AEC0;
  --color-neutral-300: #CBD5E0;
  --color-neutral-200: #E2E8F0;
  --color-neutral-100: #F7FAFC;
  --color-neutral-050: #FAFBFC;
  --color-white: #FFFFFF;

  /* Accent: Refined Gold - More Luxurious */
  --color-accent-gold: #B8965C;
  --color-accent-gold-light: #D4B678;
  --color-accent-gold-dim: #8B7242;
  --color-accent-slate: #2D3748;

  /* Success/Status Colors */
  --color-success: #2F855A;
  --color-success-light: #C6F6D5;

  /* Typography - Premium Fonts */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Lora', 'Georgia', 'Times New Roman', serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  /* Type Scale - Golden Ratio Derived */
  --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: 1.875rem;
  /* 30px */
  --text-4xl: 2.25rem;
  /* 36px */
  --text-5xl: 3rem;
  /* 48px */
  --text-6xl: 3.75rem;
  /* 60px */

  /* Spacing Scale (8px grid) */
  --space-0: 0;
  --space-1: 0.25rem;
  /* 4px */
  --space-2: 0.5rem;
  /* 8px */
  --space-3: 0.75rem;
  /* 12px */
  --space-4: 1rem;
  /* 16px */
  --space-5: 1.25rem;
  /* 20px */
  --space-6: 1.5rem;
  /* 24px */
  --space-8: 2rem;
  /* 32px */
  --space-10: 2.5rem;
  /* 40px */
  --space-12: 3rem;
  /* 48px */
  --space-16: 4rem;
  /* 64px */
  --space-20: 5rem;
  /* 80px */
  --space-24: 6rem;
  /* 96px */
  --space-32: 8rem;
  /* 128px */

  /* Borders & Shadows */
  --border-width-thin: 1px;
  --border-width-medium: 2px;
  --border-color-light: var(--color-neutral-200);
  --border-color-medium: var(--color-neutral-300);
  --border-radius-none: 0;
  --border-radius-sm: 2px;
  --border-radius-md: 4px;
  --border-radius-lg: 8px;
  --border-radius-xl: 12px;
  --border-radius-full: 9999px;

  /* Premium Shadow System */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --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);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);

  /* Gold Accent Shadow */
  --shadow-gold: 0 4px 14px 0 rgba(184, 150, 92, 0.15);
  --shadow-gold-lg: 0 10px 40px -10px rgba(184, 150, 92, 0.25);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slower: 500ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Line Heights */
  --leading-none: 1;
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;

  /* Letter Spacing */
  --tracking-tighter: -0.05em;
  --tracking-tight: -0.025em;
  --tracking-normal: 0;
  --tracking-wide: 0.025em;
  --tracking-wider: 0.05em;
  --tracking-widest: 0.1em;

  /* Z-Index Scale */
  --z-dropdown: 10;
  --z-sticky: 20;
  --z-fixed: 30;
  --z-modal-backdrop: 40;
  --z-modal: 50;
  --z-popover: 60;
  --z-tooltip: 70;
}