/* ==========================================================================
   navigation.css: Sistema de Navegación Accesible, Mega Menús y Navbar Compacta
   Curso: Estadística Correlacional Interactiva en Ciencias Sociales
   ========================================================================== */

/* ==========================================================================
   1. DIFERENCIACIÓN INSTITUCIONAL: NAVBAR COMPACTA EN PÁGINAS INTERNAS
   ========================================================================== */
body:not(.rs-index-page) {
  --inner-navbar-height: 56px;
}

body:not(.rs-index-page) #quarto-header {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  width: 100% !important;
  z-index: 1030 !important;
  background: transparent !important;
  margin: 0 !important;
  padding: 0 !important;
}

body:not(.rs-index-page) #quarto-header .navbar {
  min-height: var(--inner-navbar-height, 56px) !important;
  height: auto !important;
  background-color: #071a2e !important;
  background-color: rgba(7, 26, 46, 0.86) !important;
  backdrop-filter: blur(12px) saturate(120%) !important;
  -webkit-backdrop-filter: blur(12px) saturate(120%) !important;
  border-bottom: 1px solid rgba(22, 166, 201, 0.14) !important;
  box-shadow: 0 6px 24px rgba(7, 26, 46, 0.22) !important;
  padding: 0.35rem 1.5rem !important;
  display: flex !important;
  align-items: center !important;
}

/* Compensación de espaciado para que el contenido bajo el header fijo no se oculte */
body:not(.rs-index-page).nav-fixed #quarto-content,
body:not(.rs-index-page).nav-fixed main.content,
body:not(.rs-index-page).nav-fixed .quarto-container {
  padding-top: calc(var(--inner-navbar-height, 56px) + 1.2rem) !important;
  margin-top: 0 !important;
}

body:not(.rs-index-page) .navbar-brand,
body:not(.rs-index-page) .nav-link,
body:not(.rs-index-page) .course-nav__section-link,
body:not(.rs-index-page) .course-nav__section-trigger {
  padding: 0.42rem 0.75rem !important;
  font-size: 0.92rem !important;
  line-height: 1.2 !important;
}

/* ==========================================================================
   2. ESTRUCTURA BASE DE LA NAVEGACIÓN (.course-nav__*) Y ESTADO ACTIVO DISCRETO
   ========================================================================== */
#quarto-header,
.navbar,
.navbar-container {
  overflow: visible !important;
}

ul.course-nav__list,
ul.course-nav,
.course-nav {
  --course-nav-panel-bg: rgba(6, 15, 24, 0.86);
  --course-nav-panel-text: rgba(246, 250, 255, 0.88);
  --course-nav-panel-muted: rgba(190, 214, 232, 0.68);
  --course-nav-panel-hover: #8edfff;
  --course-nav-panel-active: #92ddff;
  --course-nav-panel-accent: #59c7f2;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  margin: 0 auto;
  padding: 0;
  position: static !important;
  background: transparent;
}

.course-nav__item {
  position: static !important;
  display: flex;
  align-items: center;
  background: transparent;
}

.course-nav__trigger {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  background: transparent;
}

.course-nav__section-link,
.course-nav__section-trigger {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--rs-text-invert, #f8f6fb) !important;
  font: inherit;
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0.45rem 0.65rem !important;
  margin: 0;
  border-radius: 8px;
  text-decoration: none !important;
  background: transparent !important;
  appearance: none;
  -webkit-appearance: none;
  border: 0 !important;
  box-shadow: none !important;
  cursor: pointer;
  transition: color 160ms ease;
}

/* Hover simple y limpio sin cápsula ni fondo de botón */
.course-nav__section-link:hover,
.course-nav__section-link:focus-visible,
.course-nav__section-trigger:hover,
.course-nav__section-trigger:focus-visible {
  color: #ffffff !important;
  background: transparent !important;
}

/* Estado activo discreto mediante línea inferior sin fondo ni cápsula */
.course-nav__item.is-active .course-nav__section-link,
.course-nav__item.is-active .course-nav__section-trigger,
.course-nav__section-link.is-active,
.course-nav__section-link[aria-current="page"],
.course-nav__section-trigger.is-active {
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
  color: #ffffff !important;
}

.course-nav__item.is-active .course-nav__section-link::after,
.course-nav__item.is-active .course-nav__section-trigger::after,
.course-nav__section-link.is-active::after,
.course-nav__section-link[aria-current="page"]::after,
.course-nav__section-trigger.is-active::after {
  content: "";
  position: absolute;
  left: 0.75rem;
  right: 0.75rem;
  bottom: -0.15rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #4f8fff, #8a6cff);
}

body:not(.rs-index-page) .course-nav__item.is-active .course-nav__section-link::after,
body:not(.rs-index-page) .course-nav__item.is-active .course-nav__section-trigger::after,
body:not(.rs-index-page) .course-nav__section-link.is-active::after,
body:not(.rs-index-page) .course-nav__section-link[aria-current="page"]::after,
body:not(.rs-index-page) .course-nav__section-trigger.is-active::after {
  background: linear-gradient(90deg, #1f5eff, #16a6c9);
}

body:not(.rs-index-page) .dropdown-menu {
  background: rgba(7, 26, 46, 0.97) !important;
  border-color: rgba(22, 166, 201, 0.16) !important;
  box-shadow: 0 12px 28px rgba(7, 26, 46, 0.24) !important;
}

body:not(.rs-index-page) .dropdown-item {
  color: #e8eef5 !important;
}

body:not(.rs-index-page) .dropdown-item:hover,
body:not(.rs-index-page) .dropdown-item:focus {
  background: rgba(31, 94, 255, 0.18) !important;
  color: #7dd8eb !important;
}

.course-nav__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  padding: 0;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 6px;
  color: rgba(248, 246, 251, 0.75);
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease;
  margin-left: -2px;
}

.course-nav__toggle:hover,
.course-nav__toggle:focus {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.15);
  outline: none;
}

.course-nav__chevron {
  display: inline-block;
  color: rgba(248, 246, 251, 0.75);
  font-size: 0.95rem;
  line-height: 1;
  transition: transform 220ms cubic-bezier(0.16, 1, 0.3, 1);
}

.course-nav__item.is-open .course-nav__toggle svg,
.course-nav__toggle[aria-expanded="true"] svg,
.course-nav__item.is-open .course-nav__section-trigger .course-nav__chevron,
.course-nav__section-trigger[aria-expanded="true"] .course-nav__chevron {
  transform: rotate(180deg);
  color: #60a5fa;
}

/* ==========================================================================
   3. PANEL UNIDO A LA NAVBAR, FONDO GLASS AZUL/CIAN Y ANIMACIÓN DE DESPLIEGUE
   ========================================================================== */
.course-nav__megamenu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 1.25rem max(1.5rem, calc((100vw - 1180px) / 2));
  border: 0;
  border-top: 1px solid rgba(116, 220, 242, 0.12);
  border-radius: 0;
  background:
    radial-gradient(
      circle at 82% 0%,
      rgba(20, 184, 210, 0.12),
      transparent 42%
    ),
    linear-gradient(
      180deg,
      rgba(5, 13, 21, 0.78),
      rgba(6, 16, 25, 0.88)
    );
  backdrop-filter: blur(22px) saturate(135%);
  -webkit-backdrop-filter: blur(22px) saturate(135%);
  box-shadow: 0 20px 42px rgba(0, 6, 15, 0.18);
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  z-index: 1050;
  transform: translateY(-14px);
  clip-path: inset(0 0 100% 0);
  transform-origin: top center;
  transition: clip-path 190ms ease, transform 190ms ease, opacity 130ms ease, visibility 0s linear 190ms;
}

.course-nav__item.is-open .course-nav__megamenu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
  clip-path: inset(0 0 0 0);
  transition: clip-path 210ms ease, transform 210ms ease, opacity 140ms ease, visibility 0s;
}

/* ==========================================================================
   4. GRID DE COLUMNAS Y ENLACES DEL PANEL (LIMPIO SIN CARDS NI MORADOS)
   ========================================================================== */
.course-nav__groups-grid {
  width: min(100%, 1180px);
  margin-inline: auto;
}

.course-nav__groups-grid--3col {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem 2.25rem;
}

.course-nav__groups-grid--4col {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem 1.8rem;
}

.course-nav__group {
  min-width: 0;
}

.course-nav__group-title {
  margin: 0 0 0.55rem;
  color: var(--course-nav-panel-muted, rgba(190, 214, 232, 0.68));
  font-family: var(--rs-font-mono, 'Roboto Mono', monospace);
  font-size: 0.68rem;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-bottom: none;
  padding-bottom: 0;
}

.course-nav__group-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.28rem;
}

.course-nav__item-link {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.3rem 0;
  color: var(--course-nav-panel-text, rgba(246, 250, 255, 0.88)) !important;
  font-size: 0.84rem;
  line-height: 1.3;
  text-decoration: none !important;
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
  transform: none !important;
  transition: color 150ms ease, text-shadow 150ms ease;
}



.course-nav__item-link:hover,
.course-nav__item-link:focus-visible {
  color: var(--course-nav-panel-hover, #8edfff) !important;
  background: transparent !important;
  transform: none !important;
  text-shadow: 0 0 18px rgba(60, 190, 235, 0.18);
  outline: none;
}



.course-nav__item-link.is-active,
.course-nav__item-link[aria-current="page"] {
  color: var(--course-nav-panel-active, #92ddff) !important;
  font-weight: 650;
  background: transparent !important;
  box-shadow: none !important;
}

.course-nav__item-link.is-active::before,
.course-nav__item-link[aria-current="page"]::before {
  content: "";
  width: 5px;
  height: 5px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--course-nav-panel-accent, #59c7f2);
  box-shadow: 0 0 12px rgba(65, 196, 240, 0.42);
}



/* ==========================================================================
   5. RESPONSIVE Y ADAPTACIÓN MÓVIL / TABLET (ACORDEÓN <= 900px)
   ========================================================================== */
@media (max-width: 900px) {
  body:not(.rs-index-page) .navbar {
    padding: 0.5rem 1rem !important;
  }

  body:not(.rs-index-page) .navbar .navbar-collapse {
    background: rgba(7, 26, 46, 0.98) !important;
    border: 1px solid rgba(22, 166, 201, 0.14) !important;
    border-radius: 14px;
    margin-top: 0.75rem;
    padding: 0.75rem !important;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
  }

  ul.course-nav__list,
  ul.course-nav,
  .course-nav {
    flex-direction: column;
    align-items: stretch;
    gap: 0.35rem;
    width: 100%;
  }

  .course-nav__item {
    flex-direction: column;
    align-items: stretch;
    border-bottom: 1px solid rgba(150, 205, 225, 0.1) !important;
    padding-bottom: 0.35rem;
  }

  .course-nav__item:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }

  .course-nav__trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
  }

  .course-nav__section-link,
  .course-nav__section-trigger {
    flex-grow: 1;
    justify-content: space-between;
    padding: 0.65rem 0.75rem !important;
    font-size: 1rem !important;
  }

  .course-nav__toggle {
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.05);
  }

  .course-nav__megamenu {
    position: static !important;
    width: 100% !important;
    max-height: 0;
    padding-block: 0 !important;
    opacity: 0 !important;
    overflow: hidden !important;
    transform: translateY(-6px) !important;
    clip-path: none !important;
    border: none !important;
    border-top: 1px dashed rgba(150, 205, 225, 0.15) !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    background: transparent !important;
  }

  .course-nav__item.is-open .course-nav__megamenu {
    background: rgba(6, 15, 24, 0.9) !important;
    backdrop-filter: blur(16px) !important;
    -webkit-backdrop-filter: blur(16px) !important;
    max-height: 1200px !important;
    padding-block: 1rem !important;
    opacity: 1 !important;
    transform: translateY(0) !important;
    display: flex !important;
    flex-direction: column;
    gap: 1.25rem;
  }

  .course-nav__groups-grid--3col,
  .course-nav__groups-grid--4col {
    grid-template-columns: 1fr !important;
    gap: 1.25rem !important;
  }
}

/* ==========================================================================
   6. REDUCED MOTION
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  .course-nav__megamenu,
  .course-nav__toggle svg,
  .course-nav__section-trigger,
  .course-nav__section-trigger .course-nav__chevron {
    transition: none !important;
  }
}