:root {
  /* Colors - Aerospace / Tech */
  --color-bg: #F8FAFC; /* High Altitude White */
  --color-surface: #FFFFFF;
  --color-text-primary: #0F172A; /* Slate 900 - Dark Turbine */
  --color-text-secondary: #64748B; /* Slate 500 */
  --color-accent: #0284C7; /* Light Blue 600 - Sky */
  --color-accent-dark: #0369A1;
  --color-border: #E2E8F0;
  
  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.4);

  /* Typography */
  --font-display: 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  /* Fluid Typography */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.85rem);
  --text-sm: clamp(0.85rem, 0.8rem + 0.3vw, 0.95rem);
  --text-base: clamp(0.95rem, 0.9rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1.05rem + 0.375vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1vw, 2.25rem);
  --text-2xl: clamp(2.25rem, 1.8rem + 1.5vw, 3.5rem);
  --text-3xl: clamp(3.5rem, 2.5rem + 3vw, 5rem);
  --text-hero: clamp(4rem, 3rem + 6vw, 8rem);

  /* Spacing */
  --space-2: 0.5rem;
  --space-4: 1rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Easings - Aerodynamic & Swift */
  --ease-aero: cubic-bezier(0.16, 1, 0.3, 1);
  
  /* Z-index */
  --z-negative: -1;
  --z-base: 0;
  --z-content: 10;
  --z-overlay: 50;
  --z-hud: 100;
}