:root {
  /* Colors */
  --color-bg-primary: #0B0D10;
  --color-bg-secondary: #16191E;
  --color-surface: #1E2228;
  --color-surface-elevated: #262B33;
  
  --color-text-primary: #F5F5F3;
  --color-text-secondary: #A8ADB5;
  --color-text-muted: #6B7280;
  
  --color-brand: #00D4FF;
  --color-brand-hover: #33DDFF;
  --color-brand-glow: rgba(0,212,255,0.15);
  
  --color-accent: #FFB800;
  --color-accent-hover: #FFC933;
  
  --color-success: #10B981;
  --color-error: #EF4444;
  
  --color-border: rgba(255,255,255,0.08);
  --color-overlay: rgba(11,13,16,0.7);
  --color-overlay-heavy: rgba(11,13,16,0.85);

  /* Fonts */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  
  --font-display-xl: clamp(2.5rem, 5vw, 4.5rem);
  --font-h1: clamp(2rem, 4vw, 3.5rem);
  --font-h2: clamp(1.75rem, 3vw, 2.75rem);
  --font-h3: clamp(1.25rem, 2vw, 2rem);
  --font-h4: clamp(1.125rem, 1.5vw, 1.5rem);
  --font-body-lg: clamp(1.125rem, 1.25vw, 1.25rem);
  --font-body-md: 1rem;
  --font-small: 0.875rem;
  --font-caption: 0.75rem;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;
  --space-2xl: 32px;
  --space-3xl: 48px;
  --space-4xl: 64px;
  --space-5xl: 128px;
  
  --space-section: clamp(4rem, 8vw, 6rem);

  /* Layout */
  --container-max: 1320px;
  --container-padding: clamp(1rem, 5vw, 4rem);

  /* Radius */
  --radius-xs: 6px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.1);
  --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-glow: 0 0 15px var(--color-brand-glow);

  /* Motion */
  --ease-out: cubic-bezier(0.33, 1, 0.68, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
  --duration-reveal: 600ms;

  /* Z-index */
  --z-base: 1;
  --z-above: 10;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-header: 300;
  --z-overlay: 400;
  --z-modal: 500;
  --z-toast: 600;
  --z-whatsapp: 700;
}