/* ================================
   RUNT Colombia - CSS Principal
   ================================ */

/* Variables CSS para fácil mantenimiento */
:root {
  /* Colores principales */
  --color-primary: #1e3a8a;
  --color-primary-light: #3b82f6;
  --color-primary-dark: #1e40af;
  --color-secondary: #059669;
  --color-secondary-light: #10b981;
  --color-accent: #f59e0b;
  
  /* Colores de texto */
  --text-primary: #1a202c;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  --text-light: #a0aec0;
  
  /* Colores de fondo */
  --bg-primary: #ffffff;
  --bg-secondary: #f7fafc;
  --bg-accent: #edf2f7;
  --bg-dark: #2d3748;
  
  /* Colores de estados */
  --color-success: #38a169;
  --color-warning: #d69e2e;
  --color-error: #e53e3e;
  --color-info: #3182ce;
  
  /* Sombras */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --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);
  
  /* Transiciones */
  --transition-fast: all 0.15s ease;
  --transition-normal: all 0.3s ease;
  --transition-slow: all 0.5s ease;
  
  /* Tipografía */
  --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Espaciado */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Bordes */
  --border-radius-sm: 6px;
  --border-radius-md: 12px;
  --border-radius-lg: 16px;
  --border-radius-xl: 20px;
  
  /* Anchos máximos */
  --max-width-sm: 640px;
  --max-width-md: 768px;
  --max-width-lg: 1024px;
  --max-width-xl: 1200px;
  --max-width-2xl: 1400px;
}

/* Reset y base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

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

body {
  font-family: var(--font-family-base);
  line-height: 1.7;
  color: var(--text-secondary);
  background-color: var(--bg-secondary);
  font-feature-settings: 'kern' 1;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Tipografía */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.025em;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
}

h4 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  font-weight: 700;
}

h5 {
  font-size: clamp(1.125rem, 2vw, 1.25rem);
  font-weight: 600;
}

h6 {
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  font-weight: 600;
}

p {
  margin-bottom: var(--spacing-lg);
  font-size: 1.1rem;
  line-height: 1.8;
}

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

a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

/* Layout principal */
.container {
  max-width: var(--max-width-xl);
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

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

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

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

/* Header */
.header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  padding: 0.75rem 0;
  box-shadow: var(--shadow-lg);
  position: relative;
  z-index: 1000;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--max-width-xl);
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.logo {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: white;
  text-decoration: none;
}

.logo:hover {
  color: white;
  text-decoration: none;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  margin: 0;
}

.nav-menu a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-sm);
  transition: var(--transition-normal);
  white-space: nowrap;
}

.nav-menu a span {
  display: none; /* Ocultar iconos en desktop */
}

.nav-menu a:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
  text-decoration: none;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
}

/* Breadcrumbs */
.breadcrumbs {
  background: var(--bg-primary);
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid #e2e8f0;
}

.breadcrumb-container {
  max-width: var(--max-width-xl);
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.breadcrumb-nav {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.breadcrumb-nav a {
  color: var(--color-info);
  text-decoration: none;
}

.breadcrumb-nav a:hover {
  text-decoration: underline;
}

/* Article Header */
.article-header {
  background: var(--bg-primary);
  padding: var(--spacing-3xl) 0;
  text-align: center;
}

.article-container {
  max-width: var(--max-width-md);
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.article-meta {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: var(--spacing-xl);
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.article-intro {
  font-size: 1.3rem;
  color: var(--text-secondary);
  line-height: 1.6;
  background: var(--bg-secondary);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-md);
  border-left: 4px solid var(--color-info);
  text-align: left;
}

/* Main Content */
.main-content {
  max-width: var(--max-width-md);
  margin: 0 auto;
  padding: var(--spacing-3xl) var(--spacing-xl);
  background: var(--bg-primary);
  min-height: 70vh;
}

.content-section {
  margin-bottom: var(--spacing-3xl);
}

.content-section h2 {
  border-bottom: 3px solid var(--color-info);
  padding-bottom: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.content-section h3 {
  margin: var(--spacing-xl) 0 var(--spacing-md);
  color: var(--text-primary);
}

/* Botones */
.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1.1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--border-radius-md);
  transition: var(--transition-normal);
  cursor: pointer;
  border: none;
  text-align: center;
  line-height: 1.5;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-light) 100%);
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(5, 150, 105, 0.3);
  text-decoration: none;
  color: white;
}

.btn-secondary {
  background: linear-gradient(135deg, var(--color-info) 0%, var(--color-primary-light) 100%);
  color: white;
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(49, 130, 206, 0.3);
  text-decoration: none;
  color: white;
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: 1.2rem;
  font-weight: 700;
}

/* Guías paso a paso */
.steps-guide {
  background: var(--bg-secondary);
  padding: var(--spacing-2xl);
  border-radius: var(--border-radius-lg);
  margin: var(--spacing-xl) 0;
}

.steps-guide h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-xl);
  text-align: center;
  font-size: 1.8rem;
}

.step {
  background: var(--bg-primary);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  border-left: 4px solid var(--color-secondary);
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
}

.step:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.step-number {
  background: var(--color-secondary);
  color: white;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin-right: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.step h4 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.step p {
  color: var(--text-secondary);
  margin: 0;
}

/* Cajas informativas */
.info-box {
  border-radius: var(--border-radius-md);
  padding: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
  border-left: 4px solid var(--color-info);
}

.info-box.success {
  background: #f0fff4;
  border-color: var(--color-success);
}

.info-box.warning {
  background: #fffbeb;
  border-color: var(--color-warning);
}

.info-box.error {
  background: #fed7d7;
  border-color: var(--color-error);
}

.info-box.info {
  background: #ebf8ff;
  border-color: var(--color-info);
}

.info-box strong {
  color: var(--text-primary);
  display: block;
  margin-bottom: var(--spacing-sm);
}

/* Listas */
.content-list {
  list-style: none;
  padding-left: 0;
}

.content-list li {
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid #e2e8f0;
  position: relative;
  padding-left: var(--spacing-xl);
}

.content-list li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-secondary);
  font-weight: bold;
  font-size: 1.2rem;
}

.content-list li:last-child {
  border-bottom: none;
}

/* Tabla de contenidos */
.toc {
  background: var(--bg-secondary);
  border: 1px solid #e2e8f0;
  border-radius: var(--border-radius-md);
  padding: var(--spacing-xl);
  margin: var(--spacing-xl) 0;
}

.toc h3 {
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.toc ul {
  list-style: none;
  padding-left: 0;
}

.toc li {
  padding: var(--spacing-sm) 0;
}

.toc a {
  color: var(--color-info);
  text-decoration: none;
  font-weight: 500;
}

.toc a:hover {
  text-decoration: underline;
}

/* Artículos relacionados */
.related-articles {
  background: var(--bg-secondary);
  padding: var(--spacing-3xl) 0;
}

.related-container {
  max-width: var(--max-width-xl);
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.related-card {
  background: var(--bg-primary);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
  border: 1px solid #f3f4f6;
}

.related-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.related-card h4 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.related-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-md);
}

/* Enlaces de texto normales en cards */
.related-card .card-link {
  color: var(--color-info);
  text-decoration: none;
  font-weight: 600;
}

.related-card .card-link:hover {
  text-decoration: underline;
  color: var(--color-primary);
}

/* Footer */
.footer {
  background: var(--bg-dark);
  color: white;
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-container {
  max-width: var(--max-width-xl);
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
  color: white;
  margin-bottom: var(--spacing-md);
}

.footer-section p,
.footer-section li {
  color: #a0aec0;
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-section ul {
  list-style: none;
  padding: 0;
}

.footer-section li {
  padding: var(--spacing-xs) 0;
}

.footer-section a {
  color: #a0aec0;
  text-decoration: none;
  transition: var(--transition-fast);
}

.footer-section a:hover {
  color: white;
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid #4a5568;
  padding-top: var(--spacing-xl);
  text-align: center;
  color: #a0aec0;
  font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  :root {
    --spacing-xl: 1rem;
    --spacing-2xl: 1.5rem;
    --spacing-3xl: 2rem;
  }
  
  .nav-menu {
    display: none;
  }
  
  .nav-menu a span {
    display: inline; /* Mostrar iconos en móvil */
    margin-right: 0.5rem;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .nav-menu.show {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-primary);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
  }
  
  .article-meta {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .main-content {
    padding: var(--spacing-xl) var(--spacing-md);
  }
  
  .steps-guide {
    padding: var(--spacing-lg);
  }
  
  .step {
    padding: var(--spacing-lg);
  }
  
  .related-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
}

@media (max-width: 480px) {
  .container,
  .nav-container,
  .breadcrumb-container,
  .article-container,
  .related-container,
  .footer-container {
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
  }
  
  .article-intro {
    padding: var(--spacing-lg);
  }
}

/* Optimizaciones de rendimiento */
.lazy-load {
  opacity: 0;
  transition: opacity 0.3s;
}

.lazy-load.loaded {
  opacity: 1;
}

/* Efectos de scroll suave */
@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

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

/* Focus visible para accesibilidad */
.btn:focus-visible,
a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Estilos de impresión */
@media print {
  .header,
  .footer,
  .breadcrumbs,
  .related-articles {
    display: none;
  }
  
  .main-content {
    max-width: none;
    padding: 0;
    background: white;
  }
  
  a {
    color: black;
    text-decoration: underline;
  }
}

/* ================================
   Estilos para Página de Contacto
   ================================ */

/* Encabezado de página */
.page-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  padding: var(--spacing-3xl) 0;
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.page-header h1 {
  color: white;
  margin-bottom: var(--spacing-lg);
  font-size: clamp(2.5rem, 6vw, 4rem);
}

.page-subtitle {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Sección de contacto */
.contact-section {
  padding: var(--spacing-3xl) 0;
  background: var(--bg-primary);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: start;
}

/* Información de contacto */
.contact-info {
  background: var(--bg-secondary);
  padding: var(--spacing-2xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.contact-info h2 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-xl);
  font-size: 2rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-lg);
  background: var(--bg-primary);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.contact-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.contact-icon {
  font-size: 2rem;
  margin-right: var(--spacing-lg);
  flex-shrink: 0;
}

.contact-details h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  font-size: 1.25rem;
}

.contact-details p {
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--text-primary);
}

.contact-details small {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.contact-note {
  margin-top: var(--spacing-2xl);
  padding: var(--spacing-xl);
  background: linear-gradient(135deg, var(--color-secondary-light) 0%, var(--color-secondary) 100%);
  color: white;
  border-radius: var(--border-radius-md);
}

.contact-note h3 {
  color: white;
  margin-bottom: var(--spacing-lg);
}

.contact-note ul {
  list-style: none;
  padding: 0;
}

.contact-note li {
  margin-bottom: var(--spacing-sm);
  font-size: 1rem;
}

/* Formulario de contacto */
.contact-form-container {
  background: var(--bg-primary);
  padding: var(--spacing-2xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--bg-accent);
}

.contact-form-container h2 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-xl);
  font-size: 2rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  font-size: 1rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: var(--spacing-md);
  border: 2px solid var(--bg-accent);
  border-radius: var(--border-radius-md);
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition-normal);
  background: var(--bg-primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* Checkbox personalizado */
.checkbox-label {
  display: flex;
  align-items: center;
  cursor: pointer;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.checkbox-label input[type="checkbox"] {
  margin-right: var(--spacing-sm);
  width: auto;
}

.checkbox-label a {
  color: var(--color-primary);
  text-decoration: underline;
}

.checkbox-label a:hover {
  color: var(--color-primary-dark);
}

/* Sección FAQ */
.faq-section {
  padding: var(--spacing-3xl) 0;
  background: var(--bg-secondary);
}

.faq-section h2 {
  text-align: center;
  color: var(--color-primary);
  margin-bottom: var(--spacing-3xl);
  font-size: 2.5rem;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.faq-item {
  background: var(--bg-primary);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
}

.faq-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.faq-item h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  font-size: 1.25rem;
}

.faq-item p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 0;
}

/* Enlaces útiles */
.useful-links {
  padding: var(--spacing-3xl) 0;
  background: var(--bg-primary);
}

.useful-links h2 {
  text-align: center;
  color: var(--color-primary);
  margin-bottom: var(--spacing-3xl);
  font-size: 2.5rem;
}

.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
}

.link-card {
  display: block;
  background: var(--bg-secondary);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
  text-decoration: none;
  border: 2px solid transparent;
}

.link-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
  text-decoration: none;
}

.link-card h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  font-size: 1.25rem;
}

.link-card p {
  color: var(--text-secondary);
  margin-bottom: 0;
  font-size: 1rem;
}

/* Responsive para página de contacto */
@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
  
  .contact-info,
  .contact-form-container {
    padding: var(--spacing-xl);
  }
  
  .page-header {
    padding: var(--spacing-2xl) 0;
  }
  
  .page-header h1 {
    font-size: 2.5rem;
  }
  
  .faq-grid {
    grid-template-columns: 1fr;
  }
  
  .links-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-item {
    flex-direction: column;
    text-align: center;
  }
  
  .contact-icon {
    margin-right: 0;
    margin-bottom: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .contact-info,
  .contact-form-container {
    padding: var(--spacing-lg);
  }
  
  .page-header h1 {
    font-size: 2rem;
  }
  
  .page-subtitle {
    font-size: 1.1rem;
  }
  
  .contact-form-container h2,
  .contact-info h2 {
    font-size: 1.75rem;
  }
}