/* Design Tokens & CSS Custom Properties */
:root {
  /* Color Palette - Dark Theme */
  --color-bg-primary: #0a0a0f;
  --color-bg-secondary: #111118;
  --color-bg-tertiary: #1a1a24;
  --color-bg-elevated: #1f1f2e;
  
  /* Surface colors with transparency */
  --color-surface-glass: rgba(255, 255, 255, 0.03);
  --color-surface-glass-hover: rgba(255, 255, 255, 0.06);
  --color-surface-glass-active: rgba(255, 255, 255, 0.09);
  
  /* Text colors */
  --color-text-primary: #ffffff;
  --color-text-secondary: #a1a1aa;
  --color-text-tertiary: #71717a;
  --color-text-muted: #52525b;
  
  /* Accent colors */
  --color-accent-primary: #3b82f6;
  --color-accent-secondary: #06b6d4;
  --color-accent-gradient: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
  --color-accent-glow: rgba(59, 130, 246, 0.3);
  
  /* Semantic colors */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  
  /* Border colors */
  --color-border-subtle: rgba(255, 255, 255, 0.06);
  --color-border-medium: rgba(255, 255, 255, 0.12);
  --color-border-strong: rgba(255, 255, 255, 0.18);
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  
  /* Font sizes - Fluid typography */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.625vw, 1.5rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.875rem);
  --text-2xl: clamp(1.5rem, 1.3rem + 1vw, 2.25rem);
  --text-3xl: clamp(1.875rem, 1.5rem + 1.875vw, 3rem);
  --text-4xl: clamp(2.25rem, 1.75rem + 2.5vw, 3.75rem);
  --text-5xl: clamp(3rem, 2rem + 5vw, 6rem);
  
  /* Font weights */
  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  
  /* Spacing scale */
  --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;
  
  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --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), 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-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 30px var(--color-accent-glow);
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
  
  /* Z-index scale */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
  
  /* Layout */
  --container-max-width: 1280px;
  --container-padding: var(--space-6);
  --nav-height: 80px;
  
  /* Blur effects */
  --blur-sm: 8px;
  --blur-md: 12px;
  --blur-lg: 16px;
  --blur-xl: 24px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  :root {
    --container-padding: var(--space-4);
    --nav-height: 64px;
  }
}