/* Design Tokens - CSS Variables */

:root {
  /* Colors - Primary */
  --color-primary: #2563EB;
  --color-primary-light: #3B82F6;
  --color-primary-dark: #1E40AF;
  
  /* Colors - Accent */
  --color-accent-warm: #F59E0B;
  --color-accent-green: #10B981;
  --color-accent-coral: #F97316;
  
  /* Colors - Neutral */
  --color-neutral-50: #FAFAFA;
  --color-neutral-100: #F5F5F5;
  --color-neutral-200: #E5E5E5;
  --color-neutral-300: #D4D4D4;
  --color-neutral-400: #A3A3A3;
  --color-neutral-600: #525252;
  --color-neutral-800: #262626;
  --color-neutral-900: #171717;
  
  /* Colors - Functional */
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error: #EF4444;
  --color-info: #3B82F6;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #2563EB 0%, #3B82F6 100%);
  --gradient-warm: linear-gradient(135deg, #F59E0B 0%, #F97316 100%);
  --gradient-subtle: linear-gradient(180deg, #FAFAFA 0%, #F5F5F5 100%);
  --gradient-ai: linear-gradient(135deg, #2563EB 0%, #10B981 100%);
  
  /* Typography - Font Families */
  --font-serif: 'DM Serif Display', Georgia, serif;
  --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  
  /* Typography - Font Sizes */
  --font-size-h1: 3.5rem;
  --font-size-h2: 2.5rem;
  --font-size-h3: 1.875rem;
  --font-size-h4: 1.5rem;
  --font-size-body-lg: 1.125rem;
  --font-size-body: 1rem;
  --font-size-body-sm: 0.875rem;
  --font-size-caption: 0.75rem;
  --font-size-overline: 0.625rem;
  
  /* Typography - Font Weights */
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Typography - Line Heights */
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
  --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.3);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Z-Index */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-tooltip: 600;
}