/* ============================================
   RESET Y BASE
============================================ */

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

:root {
  /* Colores del Manual de Marca - Paleta A */
  --color-primary: #284787;
  --color-primary-light: #4255A2;
  --color-primary-lighter: #515BA5;
  --color-accent: #84ADDC;
  --color-bg-light: #EEEDF8;
  --color-white: #FFFFFF;
  --color-text-dark: #1A1A2E;
  --color-text-medium: #6B7280;
  --color-success: #10B981;
  --color-warning: #FF6B35;

  /* Tipografía */
  --font-main: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-accent: 'Good Times', 'DM Sans', sans-serif;

  /* Espaciado */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  /* Sombras */
  --shadow-sm: 0 2px 4px rgba(40, 71, 135, 0.1);
  --shadow-md: 0 4px 12px rgba(40, 71, 135, 0.15);
  --shadow-lg: 0 8px 24px rgba(40, 71, 135, 0.2);

  /* Transiciones */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Bordes */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

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

body {
  font-family: var(--font-main);
  line-height: 1.6;
  color: var(--color-text-dark);
  background-color: var(--color-white);
  overflow-x: hidden;
}

/* ============================================
   TIPOGRAFÍA
============================================ */

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.5rem; }

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-medium);
  font-size: 1.125rem;
}

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

a:hover {
  color: var(--color-primary-light);
}

/* ============================================
   ELEMENTOS DE ARTÍCULO AEO (ESTILOS NUEVOS)
============================================ */

/* --- TÍTULOS H2 DESTACADOS --- */
/* Esto crea la separación marcada y estética que pediste */
#hub-aeo h2 {
    margin-top: var(--spacing-3xl); /* Mucho aire arriba para separar secciones */
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md) var(--spacing-lg); /* Espacio interno */
    background: linear-gradient(90deg, var(--color-bg-light) 0%, rgba(255,255,255,0) 90%); /* Degradado suave */
    border-left: 6px solid var(--color-primary); /* Borde lateral fuerte */
    border-radius: 0 var(--radius-md) var(--radius-md) 0; /* Bordes redondeados solo a la derecha */
    position: relative;
    color: var(--color-primary);
    box-shadow: 0 2px 5px rgba(0,0,0,0.02); /* Sombra muy sutil */
}

/* Meta Datos del Artículo */
.article-meta {
    color: var(--color-text-medium);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-bg-light);
}

.article-meta strong {
    color: var(--color-primary);
}

/* Párrafo de Respuesta Directa */
.direct-answer {
    font-size: 1.25rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-dark);
    font-weight: 500;
}

/* Snippet Box / Elementos Clave */
.snippet-box {
  background-color: #f5f5f5;
  border-left: 4px solid var(--color-accent); /* Color diferente al H2 para diferenciar */
  padding: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.snippet-box h3 {
    margin-top: 0;
    font-size: 1.3rem;
}

.snippet-box ul {
    margin-bottom: 0;
    padding-left: 1.5rem;
}

.snippet-box li {
    margin-bottom: 0.5rem;
}

/* Tablas Comparativas */
.table-wrapper {
    overflow-x: auto;
    margin: var(--spacing-lg) 0;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-white);
    font-size: 0.95rem;
}

.comparison-table thead {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.comparison-table th, 
.comparison-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.comparison-table tbody tr:hover {
    background-color: #f9f9f9;
}

.comparison-table td:first-child {
    font-weight: 700;
    color: var(--color-primary);
}

/* Code Blocks */
pre {
    background: #f5f5f5;
    padding: 15px;
    border-left: 4px solid var(--color-accent);
    overflow-x: auto;
    border-radius: 4px;
    font-family: monospace;
    margin-bottom: var(--spacing-lg);
}

/* Enlaces Internos Box */
.internal-link-box {
    background-color: #f0f8ff;
    padding: 15px 20px;
    border-radius: var(--radius-sm);
    margin: var(--spacing-lg) 0;
    border-left: 4px solid var(--color-success);
}

/* FAQ Details/Summary (HTML5 Semántico) */
.faq-details {
    margin-bottom: 15px;
    border: 1px solid #e0e0e0;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.faq-details summary {
    background-color: #f9f9f9;
    padding: 15px;
    font-weight: 700;
    cursor: pointer;
    list-style: none;
    position: relative;
    color: var(--color-primary);
}

.faq-details summary::-webkit-details-marker {
    display: none;
}

.faq-details summary::after {
    content: '+';
    position: absolute;
    right: 20px;
    font-weight: bold;
    color: var(--color-accent);
}

.faq-details[open] summary::after {
    content: '-';
}

.faq-content {
    padding: 20px;
    background-color: var(--color-white);
    border-top: 1px solid #e0e0e0;
}

/* CTA Final Box */
.cta-box {
    background: #f0f8ff;
    padding: 30px;
    border-radius: var(--radius-md);
    text-align: center;
    margin-top: var(--spacing-3xl);
    border: 1px solid #daeeff;
}

.cta-box h3 {
    margin-bottom: var(--spacing-sm);
}

/* ============================================
   LAYOUT
============================================ */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

main.container {
  padding-top: 100px;
}

/* ============================================
   HEADER / NAVIGATION
============================================ */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: transform var(--transition-normal);
  height: 80px;
}

.header.hidden {
  transform: translateY(-100%);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
  height: 100%;
}

.nav-logo {
  height: 40px;
  width: auto;
}

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

.nav-link {
  font-weight: 500;
  color: var(--color-text-dark);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.nav-link:hover {
  background-color: var(--color-bg-light);
  color: var(--color-primary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--spacing-xs);
  background: none;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--color-primary);
  transition: all var(--transition-fast);
  border-radius: 2px;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(7px, 7px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Dropdown */
.nav-dropdown {
  position: relative;
  cursor: pointer;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--color-white);
  box-shadow: var(--shadow-md);
  border-radius: var(--radius-sm);
  min-width: 220px;
  padding: var(--spacing-xs) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-fast);
  z-index: 1001;
  list-style: none;
}

.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu li {
  display: block;
  width: 100%;
}

.dropdown-menu li a {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-text-dark);
  font-size: 0.95rem;
  text-decoration: none;
  transition: background-color var(--transition-fast);
  border-bottom: 1px solid var(--color-bg-light);
}

.dropdown-menu li:last-child a {
  border-bottom: none;
}

.dropdown-menu li a:hover {
  background-color: var(--color-bg-light);
  color: var(--color-primary);
}

/* ============================================
   BOTONES
============================================ */

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 2px solid transparent;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background-color: var(--color-primary-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ============================================
   FOOTER
============================================ */

.footer {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-3xl);
}

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

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

.footer-section p,
.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-sm);
  display: block;
}

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

.footer-logo {
  height: 50px;
  margin-bottom: var(--spacing-md);
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.social-link {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.social-link:hover {
  background: var(--color-white);
  color: var(--color-primary);
  transform: translateY(-3px);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
}

/* ============================================
   RESPONSIVE
============================================ */

@media (max-width: 768px) {
  main.container {
    padding-top: 110px;
  }

  h1 {
    font-size: 1.75rem;
    text-align: center;
    margin-bottom: 2rem;
  }

  /* Ajuste de H2 en móvil */
  #hub-aeo h2 {
    font-size: 1.5rem;
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .nav-menu {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
    align-items: flex-start;
  }

  .nav-menu.active {
    transform: translateX(0);
  }

  .nav-toggle {
    display: flex;
  }
  
  .dropdown-menu {
    position: static;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    padding-left: var(--spacing-lg);
    display: none;
    width: 100%;
  }

  .nav-dropdown:hover .dropdown-menu,
  .nav-dropdown:focus-within .dropdown-menu {
    display: block;
  }
}