/* Estilos comunes del sitio AEMATEC: encabezado, sub-navegación y pie de página.
   Los inserta assets/js/layout.js. Son CSS plano (no dependen de Tailwind). */

:root {
  --aematec-navy: #0D2B45;
  --aematec-navy-hover: #164563;
  --aematec-teal: #00798A; /* 5:1 sobre blanco (WCAG AA); el turquesa claro #00A6B8 solo para decoración */
  --aematec-teal-line: #00B5C8;
  --aematec-teal-light: #39C7D5;
  --aematec-text-muted: #405769;
  --aematec-border: #D8E3E9;
  --aematec-footer-text: #B9CAD4;
}

/* El atributo `hidden` siempre oculta, aunque el elemento tenga clases como `flex` de Tailwind
   (sin esto, por ejemplo, la barra de sesión de la Junta en Inventario se veía sin haber iniciado sesión). */
[hidden] { display: none !important; }

.site-container {
  width: min(1240px, calc(100% - 2rem));
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 768px) {
  .site-container { width: min(1240px, calc(100% - clamp(4rem, 8vw, 12.5rem))); }
}

/* ---------- Encabezado ---------- */
.site-header {
  background: #FFFFFF;
  border-bottom: 1px solid var(--aematec-border);
  font-family: Montserrat, sans-serif;
}

.site-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 92px;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  color: var(--aematec-navy);
  text-decoration: none;
}

.site-brand img { width: 154px; height: auto; }
.site-brand__divider { width: 1px; height: 2.25rem; background: var(--aematec-border); }
.site-brand__name { font-size: 18px; font-weight: 700; letter-spacing: -0.02em; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  font-size: 14px;
  font-weight: 600;
}

.site-nav a {
  color: var(--aematec-text-muted);
  text-decoration: none;
  padding: 0.5rem 0;
  border-bottom: 2px solid transparent;
  transition: color 180ms ease, transform 180ms ease, background-color 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible { color: var(--aematec-teal); }

.site-nav a[aria-current="page"] {
  color: var(--aematec-teal);
  border-bottom-color: var(--aematec-teal-line);
}

.site-nav .site-nav__cta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  height: 2.75rem;
  padding: 0 1.25rem;
  border: 0;
  border-radius: 10px;
  background: var(--aematec-navy);
  color: #FFFFFF;
  box-shadow: 0 1px 2px rgba(13, 43, 69, 0.08);
}

.site-nav .site-nav__cta i { color: var(--aematec-teal-light); }
.site-nav .site-nav__cta:hover,
.site-nav .site-nav__cta:focus-visible,
.site-nav .site-nav__cta[aria-current="page"] { background: var(--aematec-navy-hover); color: #FFFFFF; }

.site-menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid #8497A3;
  border-radius: 10px;
  background: #FFFFFF;
  color: var(--aematec-navy);
  cursor: pointer;
}

/* ---------- Sub-navegación (Biblioteca) ---------- */
.site-subnav {
  background: #F7FAFB;
  border-top: 1px solid #E6EEF2;
}

.site-subnav__bar {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-height: 52px;
  overflow-x: auto;
  scrollbar-width: none;
}

.site-subnav__bar::-webkit-scrollbar { display: none; }

.site-subnav__title {
  flex-shrink: 0;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--aematec-teal);
}

.site-subnav a {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0;
  border-bottom: 2px solid transparent;
  color: var(--aematec-text-muted);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}

.site-subnav a:hover,
.site-subnav a:focus-visible { color: var(--aematec-teal); }
.site-subnav a[aria-current="page"] { color: var(--aematec-teal); border-bottom-color: var(--aematec-teal-line); }

.site-subnav__spacer { flex: 1 0 0.5rem; }

.site-subnav .site-subnav__cta {
  padding: 0.45rem 0.9rem;
  border: 0;
  border-radius: 8px;
  background: var(--aematec-navy);
  color: #FFFFFF;
}

.site-subnav .site-subnav__cta i { color: var(--aematec-teal-light); }
.site-subnav .site-subnav__cta:hover,
.site-subnav .site-subnav__cta:focus-visible,
.site-subnav .site-subnav__cta[aria-current="page"] { background: var(--aematec-navy-hover); color: #FFFFFF; }

/* ---------- Accesibilidad: foco visible y "saltar al contenido" ---------- */
:where(a, button, input, select, textarea, summary, [tabindex]):focus-visible { outline: 3px solid var(--aematec-teal); outline-offset: 2px; }
.site-header :where(a, button):focus-visible, .site-footer a:focus-visible { outline-color: var(--aematec-teal-light); }
form:has(> input:focus-visible) { outline: 3px solid var(--aematec-teal); outline-offset: 2px; }
.skip-link { position: absolute; left: -9999px; top: 0; z-index: 100; background: var(--aematec-navy); color: #FFFFFF; padding: .75rem 1rem; border-radius: 0 0 8px 0; font-weight: 700; }
.skip-link:focus { left: 0; }
main[tabindex="-1"]:focus { outline: none; }

/* Google permite ocultar la etiqueta flotante de reCAPTCHA si el aviso va en la página (está en el pie);
   si no, taparía el botón del Arcade. */
.grecaptcha-badge { visibility: hidden; }

/* ---------- Pie de página ---------- */
.site-footer {
  background: var(--aematec-navy);
  color: #FFFFFF;
}

.site-footer__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 2.25rem 0 5rem; /* espacio abajo para que el botón flotante del asistente no tape los enlaces */
}

.site-footer__brand { display: flex; align-items: center; gap: 1rem; }
.site-footer__brand img { width: 125px; filter: brightness(0) invert(1); }
.site-footer__brand span {
  padding-left: 1rem;
  border-left: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--aematec-footer-text);
  font-size: 14px;
}

.site-footer__meta { max-width: 26rem; color: #AFC1CC; font-size: 12px; font-style: normal; text-align: right; }
.site-footer__meta p { margin: 0; }
.site-footer__meta p + p { margin-top: 0.25rem; }
.site-footer__meta a { color: inherit; text-decoration: underline; text-underline-offset: 2px; }
.site-footer__meta a:hover, .site-footer__meta a:focus-visible { color: #FFFFFF; }

/* ---------- Celular ---------- */
@media (max-width: 767px) {
  .site-header__bar {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 0.75rem;
    min-height: 0;
    padding: 1rem 0;
  }

  .site-brand { display: contents; }
  .site-brand img { grid-column: 1; width: 92px; }
  .site-brand__divider { display: none; }
  .site-brand__name { grid-column: 2; font-size: 0.82rem; text-align: center; }

  .site-menu-toggle { display: flex; grid-column: 3; }

  .site-nav {
    display: none;
    grid-column: 1 / -1;
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--aematec-border);
  }

  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 0.7rem 0; font-size: 0.85rem; }
  .site-nav a[aria-current="page"] { border-bottom-color: transparent; }
  .site-nav .site-nav__cta { justify-content: center; }

  .site-subnav__bar { flex-wrap: wrap; gap: 0.35rem 1.1rem; padding: 0.65rem 0; overflow: visible; }
  .site-subnav__title { flex-basis: 100%; }
  .site-subnav__spacer { display: none; }

  .site-footer__bar { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .site-footer__brand { flex-direction: column; align-items: flex-start; }
  .site-footer__brand span { padding-left: 0; border-left: 0; }
  .site-footer__meta { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  .site-nav a { transition: none; }
}

/* ---------- Asistente básico (chatbot) ---------- */
.chatbot-fab {
  position: fixed;
  left: 18px;
  bottom: 18px;
  z-index: 40;
  width: 54px;
  height: 54px;
  border-radius: 999px;
  border: 0;
  background: var(--aematec-navy);
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(13, 43, 69, 0.28);
}
.chatbot-fab:hover { background: var(--aematec-navy-hover); }

.chatbot-panel {
  position: fixed;
  left: 18px;
  bottom: 84px;
  z-index: 41;
  width: min(340px, calc(100vw - 36px));
  max-height: min(480px, calc(100vh - 120px));
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--aematec-border);
  border-radius: 16px;
  box-shadow: 0 18px 40px rgba(13, 43, 69, 0.22);
  overflow: hidden;
  font-family: Montserrat, sans-serif;
}

.chatbot-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  background: var(--aematec-navy);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
}
.chatbot-header .chatbot-close {
  background: transparent;
  border: 0;
  color: #fff;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
}

.chatbot-body { padding: 1rem; overflow-y: auto; }
.chatbot-msg { color: var(--aematec-text-muted); font-size: 0.85rem; line-height: 1.5; margin: 0 0 0.75rem; }

.chatbot-search-form { display: flex; gap: 0.5rem; }
.chatbot-input, .chatbot-textarea {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--aematec-border);
  border-radius: 10px;
  padding: 0.55rem 0.7rem;
  font-size: 0.85rem;
  font-family: inherit;
  color: var(--aematec-navy);
}
.chatbot-textarea { width: 100%; resize: vertical; display: block; margin-bottom: 0.6rem; }
.chatbot-input:focus, .chatbot-textarea:focus { outline: 2px solid var(--aematec-teal); outline-offset: 1px; }

.chatbot-btn {
  border: 0;
  border-radius: 10px;
  padding: 0.55rem 0.9rem;
  background: var(--aematec-teal);
  color: #fff;
  font-weight: 700;
  font-size: 0.8rem;
  cursor: pointer;
  white-space: nowrap;
}
.chatbot-btn:hover { background: #066F7C; }
.chatbot-btn:disabled { opacity: 0.6; cursor: default; }

.chatbot-results { margin-top: 0.75rem; display: flex; flex-direction: column; gap: 0.5rem; }
.chatbot-result {
  display: block;
  border: 1px solid var(--aematec-border);
  border-radius: 10px;
  padding: 0.55rem 0.7rem;
  text-decoration: none;
  color: var(--aematec-navy);
}
.chatbot-result:hover { border-color: var(--aematec-teal-line); }
.chatbot-result strong { display: block; font-size: 0.85rem; }
.chatbot-result span { display: block; font-size: 0.75rem; color: var(--aematec-text-muted); margin-top: 0.15rem; }

.chatbot-link {
  display: block;
  margin-top: 0.9rem;
  background: none;
  border: 0;
  padding: 0;
  color: #0C8190;
  font-weight: 700;
  font-size: 0.8rem;
  cursor: pointer;
  text-align: left;
}

.chatbot-form-actions { display: flex; justify-content: space-between; align-items: center; }
.chatbot-form-actions .chatbot-link { margin-top: 0; }
.chatbot-confirmacion { color: #0C8190; font-weight: 700; font-size: 0.85rem; }

@media (max-width: 640px) {
  .chatbot-fab { left: 12px; bottom: 12px; width: 48px; height: 48px; font-size: 18px; }
  .chatbot-panel { left: 12px; bottom: 72px; }
}

/* ---------- Sugerencias en campos de texto (assets/js/sugerencias.js) ----------
   Reemplaza el <datalist> del navegador por una lista con los colores del sitio. */
.sugerencias { position: relative; }
.sugerencias > input { width: 100%; }

.sugerencias__lista {
  position: absolute;
  z-index: 30;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  min-width: 11rem;
  max-height: 14rem;
  overflow-y: auto;
  margin: 0;
  padding: 0.3rem;
  list-style: none;
  background: #FFFFFF;
  border: 1px solid var(--aematec-border);
  border-radius: 10px;
  box-shadow: 0 14px 32px rgba(13, 43, 69, 0.16);
  font-family: Montserrat, sans-serif;
  font-size: 13px;
  font-weight: 600;
  text-align: left;
}

.sugerencias__opcion {
  padding: 0.5rem 0.7rem;
  border-radius: 7px;
  color: var(--aematec-navy);
  cursor: pointer;
}

.sugerencias__opcion:hover { background: #F0F6F8; }

.sugerencias__opcion[aria-selected="true"] {
  background: var(--aematec-navy);
  color: #FFFFFF;
}

.sugerencias__opcion[aria-selected="true"]::before {
  content: "";
  display: inline-block;
  width: 3px;
  height: 0.9em;
  margin-right: 0.5rem;
  vertical-align: -0.1em;
  border-radius: 2px;
  background: var(--aematec-teal-light);
}

/* ==========================================================================
   Páginas del Repositorio
   Lo que se repetía en el <style> de cada página. Los selectores llevan la etiqueta (section.…, div.…)
   para ganarle a las utilidades de Tailwind, que se cargan después de este archivo.
   ========================================================================== */

/* Encabezado grande de la portada del sitio (index.html) y de la portada del Repositorio (repositorio.html). */
@media (max-width: 767px) {
  .hero-portada > div { min-height: auto; padding: 3rem 0 2.5rem; }
  .hero-portada h1 { max-width: 100%; font-size: clamp(2rem, 8.5vw, 3.2rem); overflow-wrap: break-word; }
  .hero-portada p { max-width: 100%; font-size: 1rem; line-height: 1.7; }
}
@media (min-width: 768px) {
  .hero-portada > div { padding-top: clamp(3rem, 5vw, 5.5rem); padding-bottom: clamp(3rem, 5vw, 5.5rem); }
  .hero-portada h1 { font-size: clamp(2.25rem, 3.2vw, 4rem); }
}

/* Recursos docentes y Recursos académicos: encabezado con buscador, catálogo y botón de filtros. */
@media (max-width: 767px) {
  section.recursos-intro > div {
    padding-top: 2.5rem;
    padding-bottom: 2rem;
  }
  section.recursos-intro h1 {
    font-size: 2.1rem;
  }
  section.recursos-intro form {
    height: auto;
    min-height: 54px;
  }
  section.recursos-intro form input {
    min-width: 0;
  }
  section.recursos-intro form button {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  .recursos-buscador-fila {
    align-items: stretch;
  }
  button.recursos-filtro-boton {
    flex: 0 0 auto;
    width: 3.5rem;
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }
  button.recursos-filtro-boton span {
    display: none;
  }
  section.recursos-catalogo {
    display: block;
    padding-top: 2rem;
    padding-bottom: 2rem;
  }
}
@media (min-width: 768px) and (max-width: 1279px) {
  section.recursos-catalogo {
    display: block;
  }
}
@media (min-width: 768px) {
  section.recursos-intro > div {
    padding-top: clamp(3rem, 4vw, 3.75rem);
    padding-bottom: clamp(2.5rem, 3vw, 3.25rem);
  }
  section.recursos-intro h1 {
    font-size: clamp(2.25rem, 3.2vw, 3rem);
  }
  section.recursos-catalogo {
    padding-top: clamp(2.5rem, 3.5vw, 3.75rem);
    padding-bottom: clamp(2.5rem, 3.5vw, 3.75rem);
  }
}
.recursos-buscador-fila {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}
.recursos-buscador-fila form {
  flex: 1 1 auto;
  min-width: 0;
}
button.recursos-filtro-boton {
  white-space: nowrap;
}

/* Panel de filtros (se abre sobre la página) y su fondo. */
.catalog-filter-backdrop {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: none;
  background: rgba(13, 43, 69, 0.48);
  backdrop-filter: blur(6px);
}
.catalog-filter-backdrop.is-open {
  display: block;
}
.catalog-filter-panel {
  position: fixed;
  inset: 1.5rem auto 1.5rem 50%;
  z-index: 50;
  display: none;
  width: min(430px, calc(100vw - 2rem));
  max-height: calc(100vh - 3rem);
  overflow-y: auto;
  transform: translateX(-50%);
  box-shadow: 0 24px 70px rgba(13, 43, 69, 0.28);
}
.catalog-filter-panel.is-open {
  display: block;
}
@media (max-width: 767px) {
  .catalog-filter-panel {
    inset: 1rem auto 1rem 50%;
    max-height: calc(100vh - 2rem);
  }
}

/* Ventana con el detalle de un recurso (portada del Repositorio, docentes y académicos). */
@media (max-width: 767px) {
  div.modal-recurso {
    padding: 1rem;
  }
  div.modal-recurso article {
    padding: 1.25rem;
  }
  div.modal-recurso dl {
    grid-template-columns: 1fr;
  }
}

/* Atajos de curso (portada del Repositorio y Recursos académicos) con su globo de ayuda. */
.course-shortcut {
  position: relative;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
}
.course-shortcut::before {
  content: attr(data-course-name);
  position: absolute;
  z-index: 2;
  left: 50%;
  bottom: calc(100% + 0.7rem);
  width: max-content;
  max-width: min(250px, 70vw);
  padding: 0.55rem 0.8rem;
  border: 1px solid rgba(57, 199, 213, 0.35);
  border-radius: 0.7rem;
  background: #0D2B45;
  color: #FFFFFF;
  box-shadow: 0 10px 24px rgba(13, 43, 69, 0.18);
  font-family: Montserrat, sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.25;
  text-align: center;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 0.4rem) scale(0.96);
  transform-origin: bottom center;
  transition: opacity 180ms ease, transform 180ms ease;
}
.course-shortcut::after {
  content: "";
  position: absolute;
  z-index: 2;
  left: 50%;
  bottom: calc(100% + 0.08rem);
  width: 1rem;
  height: 0.7rem;
  background: #0D2B45;
  clip-path: polygon(0 0, 100% 0, 50% 100%);
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 0.4rem) scale(0.8);
  transition: opacity 180ms ease, transform 180ms ease;
}
.course-shortcut:hover,
.course-shortcut:focus-visible {
  transform: translateY(-2px);
  border-color: #00B5C8;
  background-color: #F0FBFC;
  box-shadow: 0 8px 18px rgba(13, 43, 69, 0.1);
}
.course-shortcut:hover::before,
.course-shortcut:hover::after,
.course-shortcut:focus-visible::before,
.course-shortcut:focus-visible::after {
  opacity: 1;
  transform: translate(-50%, 0) scale(1);
}
@media (prefers-reduced-motion: reduce) {
  .course-shortcut,
  .course-shortcut::before,
  .course-shortcut::after {
    transition: none;
  }
}

/* ==========================================================================
   Celular: menos aire y tarjetas más compactas en todas las páginas
   Las páginas usan utilidades de Tailwind con valores fijos (py-[56px], text-[30px], p-8…) pensadas para
   escritorio; aquí se reducen solo en pantallas angostas. Los selectores llevan `main` y el atributo para
   ganarle a Tailwind, que se carga después de este archivo.
   ========================================================================== */
@media (max-width: 767px) {
  main section[class*="py-["] { padding-top: 2rem; padding-bottom: 2rem; }
  main section[class*="pb-["] { padding-bottom: 2rem; }
  main section[class*="mb-["] { margin-bottom: 2rem; }
  main h2[class*="text-[30px]"] { font-size: 1.45rem; }
  main .mb-7 { margin-bottom: 1rem; }
  main a[class*="p-8"], main article[class*="p-8"], main div[class*="p-8"] { padding: 1rem; }
  main a[class*="p-6"], main article[class*="p-6"] { padding: 0.9rem; }
  .hero-portada .site-container { min-height: 0; padding-top: 2rem; padding-bottom: 2rem; }
  .hero-portada .site-container > p { margin-top: 0.75rem; font-size: 0.95rem; line-height: 1.6; }
  .hero-portada h1 { font-size: clamp(1.9rem, 8vw, 2.4rem); }
}