/**
 * CSS Variables - Design Tokens
 * Centralizes all design constants for consistency
 */

:root {
  /* ===== Colors ===== */
  /* Primary */
  --color-primary: #1B263B;
  --color-primary-light: #2E3A52;
  --color-primary-dark: #0F1621;
  
  /* Secondary */
  --color-secondary: #D4AF37;
  --color-secondary-light: #E0C55B;
  --color-secondary-dark: #C09D2F;
  
  /* Accent */
  --color-accent: #3FA9F5;
  --color-accent-light: #66BEFF;
  --color-accent-dark: #2B8CD8;
  
  /* Neutrals */
  --color-background: #F8F9FA;
  --color-foreground: #2E2E2E;
  --color-white: #FFFFFF;
  --color-black: #000000;
  
  /* Grays */
  --color-muted: #6C757D;
  --color-border: rgba(27, 38, 59, 0.1);
  --color-gray-50: #F9FAFB;
  --color-gray-100: #F5F7FA;
  --color-gray-200: #E8EAF0;
  --color-gray-300: #DDDDDD;
  --color-gray-400: #999999;
  --color-gray-500: #666666;
  --color-gray-600: #555555;
  --color-gray-700: #333333;
  --color-gray-800: #222222;
  --color-gray-900: #111111;
  
  /* Semantic Colors */
  --color-success: #2E7D32;
  --color-success-light: #E8F5E9;
  --color-warning: #F57C00;
  --color-warning-light: #FFF3E0;
  --color-danger: #D4183D;
  --color-danger-light: #FFEBEE;
  --color-info: #1976D2;
  --color-info-light: #E3F2FD;
  
  /* ===== Spacing ===== */
  --spacing-xs: 0.25rem;    /* 4px */
  --spacing-sm: 0.5rem;     /* 8px */
  --spacing-md: 1rem;       /* 16px */
  --spacing-lg: 1.5rem;     /* 24px */
  --spacing-xl: 2rem;       /* 32px */
  --spacing-2xl: 2.5rem;    /* 40px */
  --spacing-3xl: 3rem;      /* 48px */
  --spacing-4xl: 4rem;      /* 64px */
  
  /* ===== Border Radius ===== */
  --radius-xs: 0.25rem;     /* 4px */
  --radius-sm: 0.375rem;    /* 6px */
  --radius-md: 0.5rem;      /* 8px */
  --radius-lg: 0.75rem;     /* 12px */
  --radius-xl: 1rem;        /* 16px */
  --radius-2xl: 1.5rem;     /* 24px */
  --radius-full: 9999px;
  
  /* ===== Shadows ===== */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 2px 4px 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);
  
  /* ===== Typography ===== */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-family-mono: 'Courier New', Courier, monospace;
  
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-md: 1.125rem;   /* 18px */
  --font-size-lg: 1.25rem;    /* 20px */
  --font-size-xl: 1.5rem;     /* 24px */
  --font-size-2xl: 1.875rem;  /* 30px */
  --font-size-3xl: 2.25rem;   /* 36px */
  --font-size-4xl: 3rem;      /* 48px */
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* ===== Transitions ===== */
  --transition-fast: 0.15s ease;
  --transition-base: 0.2s ease;
  --transition-slow: 0.3s ease;
  --transition-slower: 0.5s ease;
  
  /* ===== Z-index ===== */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-overlay: 999;
  --z-modal: 1000;
  --z-toast: 1100;
  --z-tooltip: 1200;
  
  /* ===== Breakpoints (for reference in JS) ===== */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
}