/**
 * Versantus Design System - CSS Variables
 * Versantus Brand + Oxford University Theme
 */

:root {
  /* ===== Versantus Brand Colors ===== */
  --versantus-raspberry: #F0146E;
  --versantus-gunmetal: #20212C;
  --versantus-eggplant: #310B37;
  --versantus-amethyst: #A445B2;
  --versantus-amber: #FFB800;
  --versantus-cool-grey: #F4F4F4;
  --versantus-white: #FFFFFF;

  /* Versantus semantic aliases */
  --versantus-primary: #20212C;
  --versantus-secondary: #310B37;
  --versantus-accent: #F0146E;
  --versantus-highlight: #FFB800;
  --versantus-light: #F4F4F4;
  --versantus-dark: #20212C;

  /* Versantus gradient */
  --versantus-gradient: linear-gradient(45deg, #A445B2 0%, #F0146E 100%);

  /* ===== Oxford Brand Colors ===== */
  --oxford-blue: #002147;
  --oxford-light-blue: #4E6796;
  --heritage-gold: #C4A647;
  --stone: #D5D2CA;
  --dark-stone: #B3AFA6;

  /* ===== Christ Church College Colors ===== */
  --christ-church-red: #8B0000;
  --christ-church-gold: #D4AF37;
  --christ-church-cream: #FDF5E6;
  --christ-church-dark: #1a1a1a;

  /* ===== Semantic Colors ===== */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #3b82f6;
  
  /* ===== Neutral Colors ===== */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  
  /* ===== Typography ===== */
  /* Versantus brand fonts */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Oxford/academic fonts */
  --font-serif: 'Merriweather', Georgia, 'Times New Roman', serif;
  --font-sans: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-display: 'Outfit', 'Playfair Display', Georgia, serif;
  --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Mono', monospace;
  
  /* Font Sizes */
  --text-xs: 0.75rem;     /* 12px */
  --text-sm: 0.875rem;    /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg: 1.125rem;    /* 18px */
  --text-xl: 1.25rem;     /* 20px */
  --text-2xl: 1.5rem;     /* 24px */
  --text-3xl: 1.875rem;   /* 30px */
  --text-4xl: 2.25rem;    /* 36px */
  --text-5xl: 3rem;       /* 48px */
  --text-6xl: 3.75rem;    /* 60px */
  
  /* Font Weights */
  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-black: 900;
  
  /* Line Heights */
  --leading-none: 1;
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;
  
  /* ===== Spacing ===== */
  --space-0: 0;
  --space-1: 0.25rem;     /* 4px */
  --space-2: 0.5rem;      /* 8px */
  --space-3: 0.75rem;     /* 12px */
  --space-4: 1rem;        /* 16px */
  --space-5: 1.25rem;     /* 20px */
  --space-6: 1.5rem;      /* 24px */
  --space-8: 2rem;        /* 32px */
  --space-10: 2.5rem;     /* 40px */
  --space-12: 3rem;       /* 48px */
  --space-16: 4rem;       /* 64px */
  --space-20: 5rem;       /* 80px */
  --space-24: 6rem;       /* 96px */
  
  /* ===== Layout ===== */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1200px;
  --container-2xl: 1440px;
  
  /* ===== Border Radius ===== */
  --radius-none: 0;
  --radius-sm: 0.125rem;  /* 2px */
  --radius-md: 0.375rem;  /* 6px */
  --radius-lg: 0.5rem;    /* 8px */
  --radius-xl: 0.75rem;   /* 12px */
  --radius-2xl: 1rem;     /* 16px */
  --radius-full: 9999px;
  
  /* ===== Shadows ===== */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  
  /* ===== Transitions ===== */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 300ms ease;
  
  /* ===== Z-Index ===== */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
}

/* Dark mode variables (for future use) */
@media (prefers-color-scheme: dark) {
  :root {
    /* Override variables for dark mode if needed */
  }
}