/* CSS Variables - Design Tokens */
:root {
    /* Colors */
    --color-primary: #00d4ff;
    --color-primary-dark: #00a8cc;
    --color-secondary: #8b5cf6;
    --color-accent: #ec4899;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    
    /* Neutrals */
    --color-white: #ffffff;
    --color-black: #000000;
    --color-gray-50: #fafafa;
    --color-gray-100: #f4f4f5;
    --color-gray-200: #e4e4e7;
    --color-gray-300: #d4d4d8;
    --color-gray-400: #a1a1aa;
    --color-gray-500: #71717a;
    --color-gray-600: #52525b;
    --color-gray-700: #3f3f46;
    --color-gray-800: #27272a;
    --color-gray-900: #18181b;
    
    /* Background */
    --bg-primary: #0a0a0a;
    --bg-secondary: #0f0f0f;
    --bg-tertiary: #141414;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #00d4ff 0%, #8b5cf6 100%);
    --gradient-accent: linear-gradient(135deg, #ec4899 0%, #8b5cf6 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #00d4ff 100%);
    --gradient-warm: linear-gradient(135deg, #f59e0b 0%, #ec4899 100%);
    --gradient-cool: linear-gradient(135deg, #8b5cf6 0%, #00d4ff 100%);
    --gradient-rainbow: linear-gradient(135deg, #00d4ff 0%, #8b5cf6 35%, #ec4899 70%, #f59e0b 100%);
    --gradient-dark: linear-gradient(180deg, #0a0a0a 0%, #1a0f2e 50%, #0a0a0a 100%);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', Monaco, Consolas, 'Courier New', 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: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    --text-7xl: 4.5rem;
    --text-8xl: 6rem;
    --text-9xl: 8rem;
    
    /* Font Weights */
    --font-light: 300;
    --font-regular: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;
    --font-black: 900;
    
    /* Spacing */
    --space-0: 0;
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;
    --space-40: 10rem;
    --space-48: 12rem;
    --space-56: 14rem;
    --space-64: 16rem;
    
    /* Border Radius */
    --radius-none: 0;
    --radius-sm: 0.125rem;
    --radius-base: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-3xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-base: 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);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    --transition-slower: 500ms ease;
    
    /* Z-index */
    --z-0: 0;
    --z-10: 10;
    --z-20: 20;
    --z-30: 30;
    --z-40: 40;
    --z-50: 50;
    --z-60: 60;
    --z-70: 70;
    --z-80: 80;
    --z-90: 90;
    --z-100: 100;
    --z-max: 9999;
    
    /* Breakpoints */
    --screen-sm: 640px;
    --screen-md: 768px;
    --screen-lg: 1024px;
    --screen-xl: 1280px;
    --screen-2xl: 1536px;
}