/*
Theme Name: Vector SEO
Theme URI: https://example.com
Author: Tu Empresa
Author URI: https://example.com
Description: Tema WordPress optimizado para SEO: carga ultra rápida, arquitectura de silos para enlazado interno, menú mobile-first, schema.org automático y gestión de anuncios integrada.
Version: 1.0.0
Requires at least: 6.3
Tested up to: 6.7
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: vector-seo
Domain Path: /languages
*/

/* ==========================================================================
   CSS crítico — sin frameworks, sin dependencias externas, carga mínima
   ========================================================================== */
:root {
  --c-text: #1a1a1a;
  --c-text-light: #666;
  --c-bg: #fff;
  --c-bg-alt: #f6f7f8;
  --c-accent: #0b5fff;
  --c-border: #e6e6e6;
  --max-w: 1180px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  --radius: 6px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--c-text);
  background: var(--c-bg);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--c-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
ul { list-style: none; margin: 0; padding: 0; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 1.25rem; }

h1, h2, h3, h4 { line-height: 1.25; letter-spacing: -0.01em; }

/* Breadcrumbs (clave para SEO / arquitectura de silo) */
.breadcrumbs {
  font-size: 0.82rem;
  color: var(--c-text-light);
  padding: 0.75rem 0;
}
.breadcrumbs a { color: var(--c-text-light); }
.breadcrumbs .sep { margin: 0 0.4rem; }

/* Barra superior opcional (menú "topbar") */
.top-bar {
  background: var(--c-text);
  color: #fff;
}
.top-bar nav ul { display: flex; gap: 1.2rem; padding: 0.5rem 0; }
.top-bar nav a { color: #fff; font-size: 0.82rem; opacity: 0.9; }
.top-bar nav a:hover { opacity: 1; }

/* Header */
.site-header {
  border-bottom: 1px solid var(--c-border);
  padding: 0.9rem 0;
  position: sticky;
  top: 0;
  background: var(--c-bg);
  z-index: 50;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-title { font-size: 1.3rem; font-weight: 800; margin: 0; }
.site-title a { color: var(--c-text); }
.main-navigation ul { display: flex; gap: 1.6rem; }
.main-navigation a { color: var(--c-text); font-weight: 500; font-size: 0.93rem; }

/* ==========================================================================
   Menú móvil — "checkbox hack": 100% CSS, cero JavaScript.
   Funciona igual con o sin JS activo, y es compatible con AMP (que no
   permite <script> personalizados). El checkbox va oculto pero accesible
   por teclado; el <label> hace de botón visual.
   ========================================================================== */
.mobile-toggle-checkbox {
  position: fixed;
  top: -9999px;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
  margin: 0;
  padding: 0;
  border: 0;
}

.mobile-menu-toggle {
  display: none;
  position: fixed;
  bottom: calc(1.1rem + env(safe-area-inset-bottom, 0px));
  right: 1.1rem;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: 0 4px 14px rgba(0,0,0,.22);
  z-index: 100;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

/* Ícono hamburguesa dibujado en CSS puro (sin fuente de iconos, sin peticiones) */
.mobile-menu-icon,
.mobile-menu-icon::before,
.mobile-menu-icon::after {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 20px;
  height: 2px;
  background: #fff;
  transform: translate(-50%, -50%);
  transition: transform .2s ease, opacity .2s ease;
}
.mobile-menu-icon::before { content: ""; transform: translate(-50%, -7px); }
.mobile-menu-icon::after  { content: ""; transform: translate(-50%, 5px); }

/* Al marcar el checkbox: el icono se convierte en "✕" */
.mobile-toggle-checkbox:checked ~ .mobile-menu-toggle .mobile-menu-icon { background: transparent; }
.mobile-toggle-checkbox:checked ~ .mobile-menu-toggle .mobile-menu-icon::before { transform: translate(-50%, -50%) rotate(45deg); }
.mobile-toggle-checkbox:checked ~ .mobile-menu-toggle .mobile-menu-icon::after  { transform: translate(-50%, -50%) rotate(-45deg); }

.mobile-toggle-checkbox:focus-visible ~ .mobile-menu-toggle {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.mobile-nav-panel {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 101;
}
.mobile-toggle-checkbox:checked ~ .mobile-nav-panel { display: block; }

.mobile-nav-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.5);
  display: block;
  cursor: pointer;
}

.mobile-nav-panel .panel-inner {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: var(--c-bg);
  border-radius: 16px 16px 0 0;
  padding: 1.5rem;
  padding-bottom: calc(1.5rem + env(safe-area-inset-bottom, 0px));
  max-height: 75vh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
.mobile-nav-panel ul li { border-bottom: 1px solid var(--c-border); }
.mobile-nav-panel ul li a {
  display: block;
  padding: 0.95rem 0.3rem;
  font-size: 1.02rem;
  min-height: 44px; /* tamaño mínimo táctil recomendado (accesibilidad móvil) */
}

@media (max-width: 820px) {
  .main-navigation { display: none; }
  .mobile-menu-toggle { display: flex; align-items: center; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  .mobile-menu-icon, .mobile-menu-icon::before, .mobile-menu-icon::after { transition: none; }
  html { scroll-behavior: auto; }
}

/* ==========================================================================
   Barra de navegación inferior — estilo app nativa (Instagram, Spotify...)
   Opciones siempre visibles, sin esconder el menú tras un ícono. Íconos
   dibujados en CSS puro (sin fuentes externas): rápido y compatible AMP.
   ========================================================================== */
.bottom-nav-bar {
  display: none;
  position: fixed;
  left: 0; right: 0; bottom: 0;
  background: var(--c-bg);
  border-top: 1px solid var(--c-border);
  box-shadow: 0 -2px 10px rgba(0,0,0,.06);
  z-index: 100;
  padding-bottom: env(safe-area-inset-bottom, 0px);
  align-items: stretch;
}

.bottom-nav-tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
  padding: 0.55rem 0.2rem;
  color: var(--c-text-light);
  font-size: 0.68rem;
  min-height: 54px;
  -webkit-tap-highlight-color: transparent;
  cursor: pointer;
}
.bottom-nav-tab:hover,
.bottom-nav-tab.is-active { color: var(--c-accent); text-decoration: none; }

.bottom-nav-icon { width: 22px; height: 22px; position: relative; display: block; }
.bottom-nav-icon::before,
.bottom-nav-icon::after { content: ""; position: absolute; border-color: currentColor; }

/* Ícono genérico (punto) — usado cuando no se asigna una clase icon-* al ítem del menú */
.icon-dot .bottom-nav-icon::before {
  width: 8px; height: 8px; border-radius: 50%; background: currentColor;
  top: 50%; left: 50%; transform: translate(-50%, -50%);
}

/* Casa / Inicio */
.icon-home .bottom-nav-icon::before {
  width: 14px; height: 10px; border: 2px solid currentColor; border-top: none;
  top: 12px; left: 4px;
}
.icon-home .bottom-nav-icon::after {
  width: 0; height: 0; left: 1px; top: 2px;
  border-left: 10px solid transparent; border-right: 10px solid transparent; border-bottom: 9px solid currentColor;
}

/* Blog / documento */
.icon-blog .bottom-nav-icon::before {
  width: 14px; height: 18px; border: 2px solid currentColor; border-radius: 2px; top: 2px; left: 4px;
}

/* Servicios / engranaje simplificado (cuadrado con esquinas) */
.icon-services .bottom-nav-icon::before {
  width: 14px; height: 14px; border: 2px solid currentColor; border-radius: 4px; top: 4px; left: 4px;
}

/* Sobre nosotros / persona */
.icon-about .bottom-nav-icon::before {
  width: 8px; height: 8px; border-radius: 50%; border: 2px solid currentColor; top: 2px; left: 7px;
}
.icon-about .bottom-nav-icon::after {
  width: 14px; height: 8px; border: 2px solid currentColor; border-bottom: none; border-radius: 6px 6px 0 0; top: 12px; left: 4px;
}

/* Contacto / sobre */
.icon-contact .bottom-nav-icon::before {
  width: 16px; height: 12px; border: 2px solid currentColor; border-radius: 2px; top: 5px; left: 3px;
}

/* Buscar / lupa */
.icon-search .bottom-nav-icon::before {
  width: 10px; height: 10px; border: 2px solid currentColor; border-radius: 50%; top: 3px; left: 3px;
}
.icon-search .bottom-nav-icon::after {
  width: 2px; height: 7px; background: currentColor; top: 12px; left: 13px; transform: rotate(45deg);
}

/* Teléfono */
.icon-phone .bottom-nav-icon::before {
  width: 10px; height: 16px; border: 2px solid currentColor; border-radius: 3px; top: 3px; left: 6px;
}

/* Correo */
.icon-mail .bottom-nav-icon::before {
  width: 16px; height: 12px; border: 2px solid currentColor; border-radius: 2px; top: 5px; left: 3px;
}

/* Carrito */
.icon-cart .bottom-nav-icon::before {
  width: 14px; height: 10px; border: 2px solid currentColor; border-top: none; border-radius: 0 0 3px 3px; top: 8px; left: 4px;
}

/* Estrella / destacado */
.icon-star .bottom-nav-icon::before {
  width: 16px; height: 16px; top: 2px; left: 3px;
  background: currentColor;
  clip-path: polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
}

/* "Más" (icon-menu) — tres líneas */
.icon-menu .bottom-nav-icon::before {
  width: 18px; height: 2px; background: currentColor; box-shadow: 0 6px 0 currentColor, 0 -6px 0 currentColor;
  top: 10px; left: 2px;
}

@media (max-width: 820px) {
  .bottom-nav-bar { display: flex; }
  body { padding-bottom: calc(58px + env(safe-area-inset-bottom, 0px)); }
}

/* Hero / silo landing */
.hero { padding: 3.5rem 0; text-align: center; background: var(--c-bg-alt); }
.hero h1 { font-size: 2.3rem; margin: 0 0 0.6rem; }
.hero p { color: var(--c-text-light); max-width: 620px; margin: 0 auto; font-size: 1.05rem; }

/* Formulario de búsqueda (usado también en la 404 dinámica) */
.search-form {
  display: flex;
  gap: 0.6rem;
  max-width: 480px;
  margin: 1.2rem auto 0;
  flex-wrap: wrap;
  justify-content: center;
}
.search-form .search-field {
  flex: 1;
  min-width: 220px;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  font-size: 16px; /* evita el zoom automático de iOS Safari al enfocar */
}
.search-form .search-submit {
  border: none;
  cursor: pointer;
}
.btn {
  display: inline-block;
  padding: 0.75rem 1.6rem;
  background: var(--c-accent);
  color: #fff;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.93rem;
}
.btn:hover { opacity: .88; text-decoration: none; }

/* Silos / clusters de contenido en portada */
.silo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  padding: 3rem 0;
}
.silo-card {
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.4rem;
  transition: box-shadow .15s ease;
}
.silo-card:hover { box-shadow: 0 6px 18px rgba(0,0,0,.06); }
.silo-card h2 { font-size: 1.15rem; margin: 0 0 0.5rem; }
.silo-card h2 a { color: var(--c-text); }
.silo-card p { color: var(--c-text-light); font-size: 0.92rem; margin: 0 0 0.6rem; }
.silo-card .silo-links a { display: block; font-size: 0.86rem; margin-bottom: 0.3rem; }

/* Contenido / artículo */
.content-area { padding: 2.5rem 0; }
.entry-title { font-size: 2rem; margin: 0 0 0.3rem; }
.entry-meta { color: var(--c-text-light); font-size: 0.85rem; margin-bottom: 1.2rem; }
.entry-meta .reading-time::before { content: "· "; }
.entry-content { font-size: 1.05rem; }
.entry-content h2 { margin-top: 2rem; }
.entry-content img { border-radius: var(--radius); }

/* Tabla de contenidos automática */
.vseo-toc {
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  background: var(--c-bg-alt);
  padding: 1.2rem 1.4rem;
  margin: 0 0 1.8rem;
}
.vseo-toc-title { font-weight: 700; margin: 0 0 0.6rem; font-size: 0.95rem; }
.vseo-toc ul { margin: 0; }
.vseo-toc li { padding: 0.25rem 0; font-size: 0.92rem; }
.vseo-toc li.vseo-toc-sub { padding-left: 1.1rem; font-size: 0.88rem; color: var(--c-text-light); }
.vseo-toc a { color: var(--c-text); }
.vseo-toc a:hover { color: var(--c-accent); }

/* Bloque FAQ (patrón de bloque "FAQ — Vector SEO") */
.vseo-faq { margin: 2rem 0; }
.vseo-faq-item {
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  margin-bottom: 0.8rem;
}
.vseo-faq-question { font-size: 1.05rem; margin: 0 0 0.5rem; }
.vseo-faq-answer { margin: 0; color: var(--c-text-light); }

/* Biografía de autor */
.author-bio {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.2rem;
  margin: 1.8rem 0;
  background: var(--c-bg-alt);
}
.author-bio-avatar { border-radius: 50%; flex-shrink: 0; }
.author-bio-name { margin: 0 0 0.3rem; font-weight: 700; font-size: 0.92rem; }
.author-bio-name a { color: var(--c-text); }
.author-bio-desc { margin: 0; font-size: 0.9rem; color: var(--c-text-light); }

/* Barra de progreso de lectura — CSS puro (scroll-driven animation), cero
 * JavaScript. Se apoya en una función CSS nativa reciente de los
 * navegadores basados en Chromium; en navegadores que aún no la soportan
 * simplemente no se muestra la barra (el resto del sitio no se ve afectado
 * en absoluto: es una mejora progresiva, no una dependencia). */
.reading-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 100%;
  background: var(--c-accent);
  transform-origin: left;
  transform: scaleX(0);
  z-index: 150;
  animation: vseo-reading-progress linear;
  animation-timeline: scroll(root);
}
@keyframes vseo-reading-progress {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}
@media (prefers-reduced-motion: reduce) {
  .reading-progress { display: none; }
}
.table-scroll-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 1.2rem 0; }
.table-scroll-wrap table { width: 100%; }

/* Zona de anuncios (AdSense u otro) */
.ad-slot {
  margin: 1.8rem 0;
  text-align: center;
  font-size: 0.7rem;
  color: var(--c-text-light);
}
.ad-slot span { display: block; margin-bottom: 0.3rem; text-transform: uppercase; letter-spacing: .05em; }

/* Relacionados (enlazado interno dentro del silo) */
.related-posts { padding: 2rem 0; border-top: 1px solid var(--c-border); }
.related-posts h3 { font-size: 1.1rem; margin-bottom: 1rem; }
.related-posts ul { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px,1fr)); gap: .8rem; }
.related-posts a { font-size: 0.92rem; font-weight: 500; }

/* Navegación por clúster — menú exclusivo del silo, visible al leer un artículo */
.cluster-nav {
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.2rem;
  margin-bottom: 1.5rem;
  background: var(--c-bg-alt);
}
.cluster-nav-title {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--c-text-light);
  margin: 0 0 0.8rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--c-border);
}
.cluster-nav-title a { color: var(--c-text-light); }
.cluster-nav ul { max-height: 420px; overflow-y: auto; }
.cluster-nav li { margin-bottom: 0.15rem; }
.cluster-nav li a {
  display: block;
  padding: 0.45rem 0.5rem;
  border-radius: 4px;
  font-size: 0.9rem;
  color: var(--c-text);
}
.cluster-nav li a:hover { background: #fff; text-decoration: none; }
.cluster-nav li.is-current a {
  background: var(--c-accent);
  color: #fff;
  font-weight: 600;
}

/* Listados */
.post-list article { padding: 1.4rem 0; border-bottom: 1px solid var(--c-border); }
.post-list h2 { font-size: 1.3rem; margin: 0 0 0.3rem; }
.post-list h2 a { color: var(--c-text); }

/* Footer */
.site-footer { border-top: 1px solid var(--c-border); background: var(--c-bg-alt); padding: 2.5rem 0 1.2rem; margin-bottom: 4rem; }
.footer-widgets { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px,1fr)); gap: 1.5rem; margin-bottom: 1.5rem; }
.footer-bottom { text-align: center; font-size: 0.82rem; color: var(--c-text-light); padding-top: 1rem; border-top: 1px solid var(--c-border); }

/* Relacionados en modo lista (alternativa al grid con imagen) */
.related-posts--list ul {
  display: block;
  grid-template-columns: none;
}
.related-posts--list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--c-border);
}
.related-posts--grid ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px,1fr));
  gap: 1rem;
}
.related-posts--grid .related-thumb { margin-bottom: 0.4rem; border-radius: var(--radius); overflow: hidden; }

/* Botones de compartir en redes */
.social-share {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.8rem 0;
  padding: 1rem 0;
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}
.social-share-label {
  font-size: 0.85rem;
  color: var(--c-text-light);
  font-weight: 600;
  margin-right: 0.3rem;
}
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  background: var(--c-bg-alt);
  color: var(--c-text);
  font-size: 0.82rem;
  border: 1px solid var(--c-border);
}
.share-btn:hover { background: var(--c-accent); color: #fff; border-color: var(--c-accent); text-decoration: none; }
.share-btn i { font-size: 0.85rem; }
@media (max-width: 480px) {
  .share-btn-text { display: none; }
  .share-btn { padding: 0.55rem; }
}

@media (max-width: 820px) {
  .site-footer { margin-bottom: 4.5rem; }
  .silo-grid { grid-template-columns: 1fr !important; }
}

/* ==========================================================================
   WooCommerce — tarjetas de producto y elementos con el mismo lenguaje
   visual del tema (mismos bordes, radios y color de acento que el resto).
   ========================================================================== */
.woocommerce-content ul.products {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.woocommerce-content ul.products li.product {
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1rem;
  transition: box-shadow .15s ease;
}
.woocommerce-content ul.products li.product:hover { box-shadow: 0 6px 18px rgba(0,0,0,.06); }
.woocommerce-content ul.products li.product img { border-radius: var(--radius); margin-bottom: 0.6rem; }
.woocommerce-content ul.products li.product .woocommerce-loop-product__title { font-size: 1rem; margin: 0.3rem 0; }
.woocommerce-content ul.products li.product .price { color: var(--c-accent); font-weight: 700; }

.woocommerce-content .button,
.woocommerce-content button.button,
.woocommerce-content a.button,
.woocommerce-content input.button {
  background: var(--c-accent) !important;
  color: #fff !important;
  border-radius: var(--radius) !important;
  border: none !important;
  padding: 0.7rem 1.4rem !important;
  font-weight: 600 !important;
}
.woocommerce-content .button:hover { opacity: .88; }

.woocommerce-content .star-rating { color: var(--c-accent); }

/* Mini-carrito en la cabecera */
.mini-cart-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--c-text);
}
.mini-cart-icon { position: relative; width: 22px; height: 22px; display: block; }
.mini-cart-count {
  position: absolute;
  top: -2px; right: -2px;
  background: var(--c-accent);
  color: #fff;
  font-size: 0.62rem;
  font-weight: 700;
  min-width: 16px;
  height: 16px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 3px;
}

/* Página de producto: galería e info a dos columnas, coherente con el resto del tema */
.woocommerce-content div.product {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
}
.woocommerce-content div.product .woocommerce-product-gallery { flex: 1; min-width: 280px; }
.woocommerce-content div.product .summary { flex: 1; min-width: 280px; }