/* ===================================
   MIPP - Variables de Marca y Base
   =================================== */

:root {
  /* Colores de marca */
  --brand-blue-dark: #203e8f;
  --brand-cyan: #0fb1c8;
  --brand-gray: #adafb2;
  --brand-blue: #005dac;
  
  /* Paleta extendida */
  --color-white: #ffffff;
  --color-black: #1a1a1a;
  --color-gray-light: #f5f5f5;
  --color-gray-medium: #e0e0e0;
  --color-gray-dark: #666666;
  
  /* Tipografía */
  --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Merriweather', Georgia, serif;
  
  /* Espaciado */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  --spacing-2xl: 6rem;
  
  /* Tamaños de fuente */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3rem;
  
  /* Anchos máximos */
  --container-narrow: 800px;
  --container-medium: 1024px;
  --container-wide: 1280px;
  
  /* Transiciones */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
  
  /* Sombras */
  --shadow-sm: 0 1px 2px 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);
  
  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;
}

/* ===================================
   Reset y Base
   =================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-ui);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-black);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===================================
   Tipografía
   =================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--brand-blue-dark);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
  margin-bottom: var(--spacing-sm);
}

a {
  color: var(--brand-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--brand-cyan);
}

a:focus-visible {
  outline: 2px solid var(--brand-cyan);
  outline-offset: 2px;
}

/* ===================================
   Layout
   =================================== */

.container {
  width: 100%;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-narrow {
  max-width: var(--container-narrow);
}

.container-medium {
  max-width: var(--container-medium);
}

.section {
  padding: var(--spacing-2xl) 0;
}

.section-sm {
  padding: var(--spacing-lg) 0;
}

.section-lg {
  padding: calc(var(--spacing-2xl) * 1.5) 0;
}

/* Fondos de sección */
.bg-white { background-color: var(--color-white); }
.bg-gray-light { background-color: var(--color-gray-light); }
.bg-brand-blue { background-color: var(--brand-blue); color: var(--color-white); }
.bg-brand-blue-dark { background-color: var(--brand-blue-dark); color: var(--color-white); }

/* ===================================
   Botones
   =================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.75rem 1.5rem;
  font-family: var(--font-ui);
  font-size: var(--text-base);
  font-weight: 600;
  text-align: center;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn-primary {
  background-color: var(--brand-cyan);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: #0d9aad;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--brand-blue);
  color: var(--color-white);
}

.btn-secondary:hover {
  background-color: var(--brand-blue-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--brand-blue);
  color: var(--brand-blue);
}

.btn-outline:hover {
  background-color: var(--brand-blue);
  color: var(--color-white);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: var(--text-lg);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: var(--text-sm);
}

/* ===================================
   Header
   =================================== */

.site-header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-gray-medium);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--brand-blue-dark);
}

.site-logo:hover {
  color: var(--brand-cyan);
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
  align-items: center;
}

.main-nav a {
  font-weight: 500;
  color: var(--color-black);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--brand-blue);
  background-color: var(--color-gray-light);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: var(--text-2xl);
  cursor: pointer;
  color: var(--brand-blue-dark);
}

/* ===================================
   Hero
   =================================== */

.hero {
  position: relative;
  min-height: 500px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--brand-blue-dark) 0%, var(--brand-blue) 100%);
  color: var(--color-white);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('../images/hero-pattern.svg');
  background-size: cover;
  opacity: 0.1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}

.hero h1 {
  color: var(--color-white);
  font-size: var(--text-5xl);
  margin-bottom: var(--spacing-md);
}

.hero p {
  font-size: var(--text-xl);
  margin-bottom: var(--spacing-lg);
  opacity: 0.95;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

/* ===================================
   Cards
   =================================== */

.card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-content {
  padding: var(--spacing-md);
}

.card-title {
  font-size: var(--text-xl);
  margin-bottom: var(--spacing-xs);
}

.card-meta {
  font-size: var(--text-sm);
  color: var(--color-gray-dark);
  margin-bottom: var(--spacing-sm);
}

.card-description {
  color: var(--color-gray-dark);
  margin-bottom: var(--spacing-md);
}

/* ===================================
   Grid
   =================================== */

.grid {
  display: grid;
  gap: var(--spacing-md);
}

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }

/* ===================================
   Sección Alternada
   =================================== */

.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.split-section.reverse {
  direction: rtl;
}

.split-section.reverse > * {
  direction: ltr;
}

.split-image {
  width: 100%;
  height: 100%;
  min-height: 400px;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

/* ===================================
   Estadísticas
   =================================== */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  text-align: center;
}

.stat-item {
  padding: var(--spacing-md);
}

.stat-number {
  font-size: var(--text-5xl);
  font-weight: 700;
  color: var(--brand-cyan);
  line-height: 1;
  margin-bottom: var(--spacing-sm);
  font-family: var(--font-display);
}

.stat-label {
  font-size: var(--text-lg);
  color: var(--color-gray-dark);
  font-weight: 500;
}

/* ===================================
   Breadcrumbs
   =================================== */

.breadcrumbs {
  padding: var(--spacing-sm) 0;
  font-size: var(--text-sm);
}

.breadcrumbs ol {
  display: flex;
  list-style: none;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
}

.breadcrumbs li:not(:last-child)::after {
  content: '/';
  margin-left: var(--spacing-xs);
  color: var(--color-gray-dark);
}

.breadcrumbs a {
  color: var(--color-gray-dark);
}

.breadcrumbs a:hover {
  color: var(--brand-blue);
}

/* ===================================
   Formularios
   =================================== */

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
  color: var(--color-black);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.75rem;
  font-family: var(--font-ui);
  font-size: var(--text-base);
  border: 2px solid var(--color-gray-medium);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--brand-cyan);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

/* ===================================
   Tags
   =================================== */

.tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-full);
  background-color: var(--color-gray-light);
  color: var(--brand-blue-dark);
}

.tag-primary {
  background-color: var(--brand-cyan);
  color: var(--color-white);
}

.tag-secondary {
  background-color: var(--brand-blue);
  color: var(--color-white);
}

/* ===================================
   Modal
   =================================== */

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.75);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  max-width: 800px;
  max-height: 90vh;
  width: 90%;
  overflow-y: auto;
  position: relative;
  padding: var(--spacing-lg);
  transform: scale(0.9);
  transition: transform var(--transition-base);
}

.modal-overlay.active .modal-content {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  background: none;
  border: none;
  font-size: var(--text-2xl);
  cursor: pointer;
  color: var(--color-gray-dark);
  transition: color var(--transition-fast);
}

.modal-close:hover {
  color: var(--brand-blue);
}

/* ===================================
   Footer
   =================================== */

.site-footer {
  background-color: var(--brand-blue-dark);
  color: var(--color-white);
  padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-section h3 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.footer-section ul {
  list-style: none;
}

.footer-section li {
  margin-bottom: var(--spacing-xs);
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-fast);
}

.footer-section a:hover {
  color: var(--brand-cyan);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: var(--spacing-md);
  text-align: center;
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.7);
}

/* ===================================
   Utilidades
   =================================== */

.text-center { text-align: center; }
.text-right { text-align: right; }
.mb-0 { margin-bottom: 0; }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===================================
   Responsive
   =================================== */

@media (max-width: 768px) {
  :root {
    --text-4xl: 2rem;
    --text-5xl: 2.5rem;
  }
  
  .main-nav {
    display: none;
  }
  
  .main-nav.active {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-top: 1px solid var(--color-gray-medium);
    box-shadow: var(--shadow-lg);
  }
  
  .main-nav.active ul {
    flex-direction: column;
    padding: var(--spacing-md);
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .hero {
    min-height: 400px;
  }
  
  .split-section {
    grid-template-columns: 1fr;
  }
  
  .split-section.reverse {
    direction: ltr;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}