/*
 * Índice editorial de capítulos para make4ht.
 * Trabaja con .chapterHead y .sectionTOCS sin modificar el archivo .tex.
 */
:root {
  --toc-ink: #0b1f3a;
  --toc-accent: #20948b;
  --toc-accent-dark: #176b64;
  --toc-gold: #e8a020;
  --toc-paper: #f2efe6;
  --toc-white: #ffffff;
  --toc-rule: #d6d0c5;
  --toc-muted: #617180;
  --toc-shadow: 0 14px 38px rgba(11, 31, 58, 0.11);
}

/* Encabezado editorial del capítulo */

/* Encabezado legible aun si JavaScript no se ejecuta. */
.chapterHead:not(.chapter-head-enhanced),
.likechapterHead:not(.chapter-head-enhanced) {
  margin: 1.2em 0 0.85em !important;
  padding: 0 0 0.42em !important;
  border-bottom: 1px solid var(--toc-rule) !important;
  font-family: "PT Sans Narrow", "Arial Narrow", Arial, sans-serif !important;
  font-size: 2em !important;
  line-height: 1.08 !important;
  color: var(--toc-ink) !important;
}

.chapterHead:not(.chapter-head-enhanced)::before,
.likechapterHead:not(.chapter-head-enhanced)::before {
  display: block;
  content: "Capítulo";
  margin-bottom: 0.12em;
  font-size: 0.48em;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--toc-accent);
}

.chapterHead:not(.chapter-head-enhanced) .titlemark,
.likechapterHead:not(.chapter-head-enhanced) .titlemark {
  margin-right: 0.55em;
  color: var(--toc-gold);
}

.chapterHead:not(.chapter-head-enhanced) br,
.likechapterHead:not(.chapter-head-enhanced) br {
  display: none;
}

.chapterHead.chapter-head-enhanced,
.likechapterHead.chapter-head-enhanced {
  position: relative;
  display: grid !important;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "kicker kicker"
    "number title";
  column-gap: 0.65em;
  row-gap: 0.08em;
  align-items: baseline;
  margin: 1.2em 0 0.85em !important;
  padding: 0 0 0.45em !important;
  border: 0 !important;
  border-bottom: 1px solid var(--toc-rule) !important;
  font-family: "PT Sans Narrow", "Arial Narrow", Arial, sans-serif !important;
  line-height: 1.08 !important;
  color: var(--toc-ink) !important;
}

.chapterHead.chapter-head-enhanced::before,
.likechapterHead.chapter-head-enhanced::before {
  content: none !important;
  display: none !important;
}

.chapter-anchor {
  position: absolute;
  inset: auto;
}

.chapter-kicker {
  grid-area: kicker;
  font-size: 0.48em;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--toc-accent);
}

.chapter-number {
  grid-area: number;
  font-size: 1.15em;
  font-weight: 700;
  color: var(--toc-gold);
  font-variant-numeric: tabular-nums;
}

.chapter-title {
  grid-area: title;
  min-width: 0;
  font-size: 1em;
  font-weight: 700;
  color: var(--toc-ink);
}

/* Panel del contenido */
.sectionTOCS.chapter-toc-panel {
  width: 100%;
  margin: 0.8em 0 2em;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--toc-rule);
  border-top: 4px solid var(--toc-accent);
  border-radius: 7px;
  background: var(--toc-white);
  box-shadow: var(--toc-shadow);
  font-family: "PT Sans Narrow", "Arial Narrow", Arial, sans-serif;
}

.toc-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.2em;
  padding: 1.15em 1.25em 1em;
  background:
    linear-gradient(120deg, rgba(32, 148, 139, 0.09), transparent 56%),
    var(--toc-paper);
  border-bottom: 1px solid var(--toc-rule);
}

.toc-panel-heading {
  min-width: 0;
}

.toc-panel-eyebrow {
  display: block;
  margin-bottom: 0.15em;
  font-size: 0.68em;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--toc-accent-dark);
}

.toc-panel-title {
  margin: 0 !important;
  padding: 0 !important;
  border: 0 !important;
  font-family: "PT Sans Narrow", "Arial Narrow", Arial, sans-serif !important;
  font-size: 1.45em !important;
  line-height: 1.05;
  color: var(--toc-ink) !important;
}

.toc-panel-summary {
  margin: 0.35em 0 0 !important;
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 0.77em;
  line-height: 1.4;
  color: var(--toc-muted);
}

.toc-btn {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 0.65em;
  min-height: 36px;
  margin: 0;
  padding: 0.55em 0.8em;
  border: 1px solid rgba(11, 31, 58, 0.18);
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--toc-ink);
  font: inherit;
  font-size: 0.73em;
  font-weight: 600;
  letter-spacing: 0.025em;
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease, color 160ms ease;
}

.toc-btn:hover,
.toc-btn:focus-visible {
  border-color: var(--toc-accent);
  background: var(--toc-white);
  color: var(--toc-accent-dark);
  outline: none;
}

.toc-btn-icon {
  width: 7px;
  height: 7px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  transition: transform 180ms ease;
}

.chapter-toc-panel.is-collapsed .toc-btn-icon {
  transform: rotate(225deg) translateY(-1px);
}

.toc-collapsible {
  display: grid;
  grid-template-rows: 1fr;
  transition: grid-template-rows 220ms ease;
}

.chapter-toc-panel.is-collapsed .toc-collapsible {
  grid-template-rows: 0fr;
}

.toc-collapsible-inner {
  min-height: 0;
  overflow: hidden;
}

.toc-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin: 0 !important;
  padding: 0.65em !important;
  list-style: none !important;
  counter-reset: none;
}

.toc-card {
  position: relative;
  min-width: 0;
  margin: 0 !important;
  padding: 0 !important;
  border-bottom: 1px solid #ece8e0;
  background: var(--toc-white);
  list-style: none !important;
  transition: background 150ms ease;
}

.toc-card:nth-child(odd) {
  border-right: 1px solid #ece8e0;
}

.toc-card:hover {
  background: #f7faf9;
}

.toc-card::before {
  content: none !important;
}

.toc-card-main {
  display: grid;
  grid-template-columns: 2.15em minmax(0, 1fr) auto;
  gap: 0.65em;
  align-items: center;
  min-height: 4.1em;
  padding: 0.7em 0.85em;
}

.toc-card-index {
  display: grid;
  place-items: center;
  width: 2.15em;
  height: 2.15em;
  border: 1px solid rgba(32, 148, 139, 0.34);
  border-radius: 50%;
  background: rgba(32, 148, 139, 0.07);
  color: var(--toc-accent-dark);
  font-size: 0.75em;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.toc-card-body {
  min-width: 0;
}

.toc-main-link {
  display: block;
  color: var(--toc-ink) !important;
  text-decoration: none !important;
  font-size: 0.9em;
  font-weight: 600;
  line-height: 1.28;
  transition: color 150ms ease;
}

.toc-card:hover .toc-main-link,
.toc-main-link:focus-visible {
  color: var(--toc-accent-dark) !important;
  outline: none;
}

.toc-main-link math,
.toc-main-link mjx-container {
  margin: 0 0.15em 0 0 !important;
}

.toc-card-arrow {
  color: #9aa4aa;
  font-size: 1.35em;
  line-height: 1;
  transform: translateX(0);
  transition: color 150ms ease, transform 150ms ease;
}

.toc-card:hover .toc-card-arrow {
  color: var(--toc-accent);
  transform: translateX(3px);
}

.toc-card-badge {
  display: inline-block;
  margin-top: 0.35em;
  padding: 0.12em 0.48em;
  border-radius: 999px;
  background: rgba(232, 160, 32, 0.11);
  color: #94610c;
  font-size: 0.62em;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.toc-card-exercise .toc-card-index {
  border-color: rgba(232, 160, 32, 0.42);
  background: rgba(232, 160, 32, 0.09);
  color: #9a670f;
}

.toc-card-extension .toc-card-index {
  border-color: rgba(91, 78, 145, 0.38);
  background: rgba(91, 78, 145, 0.08);
  color: #5b4e91;
}

.toc-card-bibliography .toc-card-index {
  border-radius: 4px;
  border-color: rgba(97, 113, 128, 0.35);
  background: rgba(97, 113, 128, 0.08);
  color: var(--toc-muted);
}

.toc-sublist {
  margin: -0.25em 0.9em 0.8em 3.7em !important;
  padding: 0.55em 0 0 0.8em !important;
  border-left: 2px solid rgba(32, 148, 139, 0.23);
  list-style: none !important;
}

.toc-sublist li {
  margin: 0 !important;
  padding: 0 !important;
  list-style: none !important;
}

.toc-sublist li::before {
  content: none !important;
}

.toc-sub-link {
  display: block;
  padding: 0.26em 0.35em;
  color: var(--toc-muted) !important;
  text-decoration: none !important;
  font-size: 0.76em;
  line-height: 1.32;
  transition: color 150ms ease, transform 150ms ease;
}

.toc-sub-link::before {
  content: "–";
  margin-right: 0.42em;
  color: var(--toc-accent);
}

.toc-sub-link:hover,
.toc-sub-link:focus-visible {
  color: var(--toc-accent-dark) !important;
  transform: translateX(2px);
  outline: none;
}

/* La estructura original sigue siendo legible si JavaScript no se ejecuta. */
.sectionTOCS:not(.chapter-toc-panel) {
  margin: 1em 0 1.8em;
  padding: 1em 1.15em;
  border-left: 4px solid var(--toc-accent);
  background: var(--toc-white);
}

.sectionTOCS:not(.chapter-toc-panel) .sectionToc,
.sectionTOCS:not(.chapter-toc-panel) .likesubsectionToc {
  line-height: 1.55;
}

.sectionTOCS:not(.chapter-toc-panel) a {
  color: var(--toc-ink);
  text-decoration: none;
}

.sectionTOCS:not(.chapter-toc-panel) a:hover {
  color: var(--toc-accent-dark);
}

@media (max-width: 700px) {
  .chapterHead.chapter-head-enhanced,
  .likechapterHead.chapter-head-enhanced {
    grid-template-columns: auto minmax(0, 1fr);
    margin-top: 0.7em !important;
  }

  .toc-panel-header {
    align-items: flex-start;
    padding: 1em;
  }

  .toc-btn-label {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .toc-btn {
    width: 36px;
    height: 36px;
    justify-content: center;
    padding: 0;
  }

  .toc-grid {
    grid-template-columns: 1fr;
    padding: 0.45em !important;
  }

  .toc-card:nth-child(odd) {
    border-right: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .toc-btn,
  .toc-btn-icon,
  .toc-collapsible,
  .toc-card,
  .toc-main-link,
  .toc-card-arrow,
  .toc-sub-link {
    transition: none !important;
  }
}