/**
 * Universidad Libre - Seccional Cartagena
 * Cartilla Interactiva PEP - Administración de Empresas
 * Design Tokens & CSS Custom Properties
 * Based on Universidad Libre Brand Manual ("Inteligencia que nos une")
 */

:root {
  /* ==========================================================================
     Official Brand Color Palette
     ========================================================================== */
  /* Institutional Red */
  --color-unilibre-red: #D02E28;
  --color-unilibre-red-hover: #B5241F;
  --color-unilibre-red-dark: #8C262E;
  --color-unilibre-red-deep: #601A23;
  --color-unilibre-red-alpha10: rgba(208, 46, 40, 0.10);
  --color-unilibre-red-alpha20: rgba(208, 46, 40, 0.20);

  /* Institutional Gold / Ocre */
  --color-unilibre-gold: #BF9B34;
  --color-unilibre-gold-hover: #A68326;
  --color-unilibre-gold-light: #F2C47C;
  --color-unilibre-gold-muted: #DFD5B8;
  --color-unilibre-gold-alpha15: rgba(191, 155, 52, 0.15);

  /* Neutrals & Monochromes */
  --color-unilibre-charcoal: #010101;
  --color-unilibre-gray-dark: #2B2B2B;
  --color-unilibre-gray-medium: #707070;
  --color-unilibre-gray-light: #CDCCCC;
  --color-unilibre-gray-lighter: #EAEAEA;
  --color-unilibre-bg-light: #F8F9FA;
  --color-unilibre-white: #FFFFFF;

  /* Semantic UI Colors */
  --color-success: #366F38;
  --color-success-bg: #E8F5E9;
  --color-success-border: #A5D6A7;
  --color-error: #D02E28;
  --color-error-bg: #FFEBEE;
  --color-error-border: #EF9A9A;
  --color-warning: #D9822B;
  --color-warning-bg: #FFF8E1;
  --color-warning-border: #FFE082;
  --color-info: #2E6DA4;
  --color-info-bg: #E3F2FD;
  --color-info-border: #90CAF9;

  /* Linear & Radial Gradients */
  --gradient-unilibre-red: linear-gradient(135deg, #D02E28 0%, #8C262E 100%);
  --gradient-unilibre-gold: linear-gradient(135deg, #F2C47C 0%, #BF9B34 100%);
  --gradient-unilibre-dark: linear-gradient(135deg, #2B2B2B 0%, #010101 100%);
  --gradient-hero-overlay: linear-gradient(180deg, rgba(140, 38, 46, 0.85) 0%, rgba(96, 26, 35, 0.95) 100%);

  /* ==========================================================================
     Typography
     ========================================================================== */
  --font-primary: 'Montserrat', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-display: 'Clarendon', Georgia, 'Times New Roman', serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Font Sizes */
  --font-size-2xs: 0.6875rem; /* 11px */
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-md: 1rem;       /* 16px (Base) */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  --font-size-5xl: 2.75rem;   /* 44px */

  /* Font Weights */
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  --font-weight-black: 900;

  /* Line Heights */
  --line-height-tight: 1.15;
  --line-height-snug: 1.35;
  --line-height-normal: 1.55;
  --line-height-relaxed: 1.75;

  /* Letter Spacing */
  --letter-spacing-tight: -0.02em;
  --letter-spacing-normal: 0em;
  --letter-spacing-wide: 0.05em;
  --letter-spacing-wider: 0.1em;

  /* ==========================================================================
     Spacing & Layout
     ========================================================================== */
  --space-2xs: 0.25rem; /* 4px */
  --space-xs: 0.5rem;   /* 8px */
  --space-sm: 0.75rem;  /* 12px */
  --space-md: 1rem;     /* 16px */
  --space-lg: 1.5rem;   /* 24px */
  --space-xl: 2rem;     /* 32px */
  --space-2xl: 2.5rem;  /* 40px */
  --space-3xl: 3rem;    /* 48px */
  --space-4xl: 4rem;    /* 64px */

  /* Booklet Dimensions */
  --booklet-max-width: 1240px;
  --booklet-min-height: 720px;
  --header-height: 70px;
  --footer-height: 64px;

  /* Mascot Dimensions & Speech Bubble */
  --mascot-width: 170px;
  --mascot-width-mobile: 110px;
  --mascot-speech-bg: #FFFFFF;
  --mascot-speech-border: #D02E28;

  /* ==========================================================================
     Border Radii
     ========================================================================== */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-pill: 9999px;
  --radius-speech: 18px;

  /* ==========================================================================
     Shadows & Elevations
     ========================================================================== */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.10), 0 4px 8px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 35px rgba(0, 0, 0, 0.12), 0 6px 12px rgba(0, 0, 0, 0.08);
  --shadow-booklet: 0 25px 50px -12px rgba(0, 0, 0, 0.25), 0 0 0 1px rgba(0, 0, 0, 0.06);
  --shadow-speech: 0 8px 24px rgba(0, 0, 0, 0.12), 0 2px 6px rgba(208, 46, 40, 0.15);
  --shadow-mascot: 0 12px 28px rgba(0, 0, 0, 0.18);

  /* ==========================================================================
     Transitions & Timing
     ========================================================================== */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-smooth: 400ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* ==========================================================================
     Z-Index Scale
     ========================================================================== */
  --z-base: 1;
  --z-card: 10;
  --z-sticky: 100;
  --z-progress: 200;
  --z-toc-drawer: 600;
  --z-mascot: 800;
  --z-modal: 1000;
  --z-toast: 1100;
}