:root {
  /* ========== Color System ========== */
  
  /* Primary Colors - Liquid Gradient */
  --color-primary-purple: #667eea;
  --color-primary-pink: #764ba2;
  --color-accent-pink: #f093fb;
  --color-accent-blue: #00d4ff;
  
  /* Neutral Colors */
  --color-background: #0f0f23;
  --color-surface: rgba(255, 255, 255, 0.1);
  --color-surface-hover: rgba(255, 255, 255, 0.15);
  --color-text-primary: #ffffff;
  --color-text-secondary: rgba(255, 255, 255, 0.8);
  --color-text-muted: rgba(255, 255, 255, 0.6);
  
  /* Functional Colors */
  --color-success: #4ade80;
  --color-warning: #fbbf24;
  --color-error: #f87171;
  --color-info: #60a5fa;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  --gradient-glow: radial-gradient(circle, rgba(102, 126, 234, 0.3) 0%, transparent 70%);
  --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 33%, #f093fb 66%, #00d4ff 100%);
  
  /* Glass Effect */
  --glass-background: rgba(255, 255, 255, 0.1);
  --glass-background-hover: rgba(255, 255, 255, 0.15);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-blur: blur(10px);
  
  /* ========== Typography System ========== */
  
  /* Font Families */
  --font-display: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;
  
  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2.25rem;
  --text-4xl: 3rem;
  --text-5xl: 4rem;
  
  /* Font Weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  
  /* Line Heights */
  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.75;
  
  /* ========== Spacing System (8px base) ========== */
  
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;
  
  /* ========== Border Radius ========== */
  
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  --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);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.3);
  --shadow-glow-lg: 0 0 40px rgba(102, 126, 234, 0.4);
  
  /* ========== Animation System ========== */
  
  /* Durations */
  --duration-fast: 200ms;
  --duration-normal: 300ms;
  --duration-slow: 600ms;
  --duration-slower: 1000ms;
  
  /* Easing Functions */
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  
  /* Animation Delays (for stagger) */
  --delay-1: 100ms;
  --delay-2: 200ms;
  --delay-3: 300ms;
  --delay-4: 400ms;
  --delay-5: 500ms;
  
  /* ========== Layout ========== */
  
  --container-max-width: 1200px;
  --navbar-height: 64px;
  --navbar-height-mobile: 56px;
  
  /* ========== Z-Index Scale ========== */
  
  --z-base: 0;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-tooltip: 600;
  --z-toast: 700;
}