.courses-catalog-page .page-hero {
  padding-block: 5.2rem 4.2rem;
}

.courses-catalog-page .nav-item-arrow,
.courses-catalog-page .nav-panel__all b { display: none !important; }

.courses-catalog-page .page-hero h1 {
  max-width: 900px;
  font-size: clamp(3.2rem, 6vw, 6rem);
  line-height: .96;
}

.courses-catalog-page .page-hero > p:last-child {
  max-width: 710px;
  margin-top: 1.5rem;
  color: #65676d;
  font-size: .95rem;
  line-height: 1.75;
}

.course-catalog {
  padding-block: 4rem 7rem;
  background: #f4f4f5;
  border-top: 1px solid #dedfe2;
}

.course-card-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1.2rem;
  padding-top: 0;
}

.catalog-group+.catalog-group{margin-top:5rem;padding-top:4rem;border-top:1px solid #d7d7dc}.catalog-group__title{margin:0 0 1.5rem;color:#171719;font-size:clamp(1.45rem,2.4vw,2.15rem);font-weight:900;letter-spacing:-.035em}.catalog-group__title:after{content:"";display:block;width:54px;height:4px;margin-top:.8rem;border-radius:3px;background:#a3182a}.catalog-group--software .course-card-pro__visual{aspect-ratio:3/2;min-height:0}.catalog-group--software .course-card-pro__visual img{width:100%;height:100%;object-fit:cover;filter:none}.catalog-group--software .course-card-pro:hover .course-card-pro__visual img{transform:scale(1.035);filter:none}

.course-card-pro {
  position: relative;
  grid-column: span 4;
  display: flex;
  flex-direction: column;
  min-height: 480px;
  overflow: hidden;
  color: #171719;
  background: #fff;
  border: 1px solid #d9dade;
  border-radius: 14px;
  box-shadow: 0 8px 24px rgba(23,23,25,.045);
  transition: border-color .22s ease, box-shadow .22s ease, transform .22s ease;
}

.course-card-pro:nth-child(-n+2) {
  grid-column: span 6;
  min-height: 510px;
}

.course-card-pro:hover,
.course-card-pro:focus-visible {
  border-color: #a3182a;
  box-shadow: 0 22px 52px rgba(113,16,31,.19);
  transform: translateY(-7px);
  outline: 0;
}

.course-card-pro__visual {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 310px;
  overflow: hidden;
  background:
    radial-gradient(circle at 25% 18%, rgba(255,255,255,.98), transparent 36%),
    linear-gradient(145deg, #fff9fa 0%, #f5e5e9 100%);
  border-bottom: 1px solid #ead6db;
}

.course-card-pro:nth-child(-n+2) .course-card-pro__visual { min-height: 340px; }

.course-card-pro__visual::after {
  content: "";
  position: absolute;
  inset: 14px;
  border: 1px solid rgba(163,24,42,.13);
  border-radius: 10px;
  pointer-events: none;
}

.course-card-pro__visual img {
  width: 88%;
  height: 292px;
  object-fit: contain;
  filter: drop-shadow(0 16px 18px rgba(75,8,18,.15));
  transition: transform .3s ease, filter .3s ease;
}

/* Ilustraciones transparentes uniformes en todo el catálogo. */
.course-card-pro__visual img {
  width: 96%;
  height: 100%;
  padding: 8px;
  object-fit: contain;
}
.course-card-pro:nth-child(-n+2) .course-card-pro__visual img {
  width: 96%;
  height: 100%;
}
.catalog-group--software .course-card-pro__visual img {
  width: 96%;
  height: 100%;
  padding: 8px;
  object-fit: contain;
}

.course-card-pro:nth-child(-n+2) .course-card-pro__visual img {
  width: 70%;
  height: 325px;
}

.course-card-pro:hover .course-card-pro__visual img,
.course-card-pro:focus-visible .course-card-pro__visual img {
  transform: scale(1.055) translateY(-3px);
  filter: drop-shadow(0 22px 24px rgba(75,8,18,.23));
}

.course-card-pro__number {
  position: absolute;
  z-index: 2;
  top: 1.25rem;
  left: 1.25rem;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: #fff;
  background: #a3182a;
  border-radius: 50%;
  font-size: .7rem;
  font-weight: 900;
  letter-spacing: .08em;
}

.course-card-pro__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  justify-content: space-between;
  min-height: 170px;
  padding: 1.8rem 1.8rem 1.7rem;
}

.course-card-pro__category {
  margin-bottom: .85rem;
  color: #a3182a;
  font-size: .66rem;
  font-weight: 900;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.course-card-pro h3 {
  margin: 0;
  max-width: 95%;
  font-size: clamp(1.55rem, 2.2vw, 2.25rem);
  line-height: 1.12;
  letter-spacing: -.035em;
}

.course-card-pro__action {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  min-height: 38px;
  margin-top: 1.5rem;
  padding: 0 1rem;
  color: #fff;
  background: #a3182a;
  border-radius: 6px;
  font-size: .68rem;
  font-weight: 900;
  letter-spacing: .1em;
  text-transform: uppercase;
  transition: background-color .2s ease, box-shadow .2s ease;
}

.course-card-pro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
  margin-top: 1.5rem;
}

.course-card-pro__actions .course-card-pro__action {
  margin-top: 0;
}

.course-card-pro__action--secondary {
  color: #8f1426;
  background: #f6e8eb;
  border: 1px solid #e7c3ca;
}

.course-card-pro__action--secondary::after { display: none; }

.course-card-pro__action--disabled {
  pointer-events: none;
  cursor: not-allowed;
  color: #85868c;
  background: #e6e6e8;
  border: 1px solid #d4d4d7;
  box-shadow: none;
}

.course-card-pro__action--disabled::after { display: none; }

.course-card-pro__action::after {
  content: "→";
  margin-left: .7rem;
  font-size: .9rem;
  transition: transform .2s ease;
}

.course-card-pro:hover .course-card-pro__action,
.course-card-pro:focus-visible .course-card-pro__action {
  background: #71101f;
  box-shadow: 0 8px 18px rgba(113,16,31,.24);
}

.course-card-pro:hover .course-card-pro__action--secondary {
  color: #fff;
  background: #8f1426;
  border-color: #8f1426;
}

.course-card-pro:hover .course-card-pro__action::after,
.course-card-pro:focus-visible .course-card-pro__action::after {
  transform: translateX(3px);
}

@media (max-width: 980px) {
  .course-card-pro,
  .course-card-pro:nth-child(-n+2) { grid-column: span 6; }
  .course-card-pro__visual,
  .course-card-pro:nth-child(-n+2) .course-card-pro__visual { min-height: 290px; }
  .course-card-pro__visual img,
  .course-card-pro:nth-child(-n+2) .course-card-pro__visual img { width: 82%; height: 275px; }
}

@media (max-width: 680px) {
  .courses-catalog-page .page-hero { padding-block: 3.6rem 3rem; }
  .course-card-pro,
  .course-card-pro:nth-child(-n+2) { grid-column: 1 / -1; min-height: 0; }
  .course-card-pro__visual,
  .course-card-pro:nth-child(-n+2) .course-card-pro__visual { min-height: 270px; }
  .course-card-pro__visual img,
  .course-card-pro:nth-child(-n+2) .course-card-pro__visual img { width: 84%; height: 255px; }
}

/* Escala visual uniforme para todo el catálogo. */
.course-card-pro__visual,
.course-card-pro:nth-child(-n+2) .course-card-pro__visual {
  min-height: 215px;
}

.course-card-pro__visual img,
.course-card-pro:nth-child(-n+2) .course-card-pro__visual img {
  width: 190px;
  height: 190px;
}

.course-card-pro h3 {
  max-width: 100%;
  font-size: clamp(.72rem, .95vw, .96rem);
  font-weight: 700;
  letter-spacing: -.025em;
  white-space: nowrap;
}

.course-card-pro__body { min-height: 145px; padding: 1.4rem; }
.course-card-pro__action { min-height: 34px; padding-inline: .8rem; font-size: .61rem; }

.course-card-pro,
.course-card-pro:nth-child(-n+2) {
  grid-column: span 4;
  min-height: 360px;
}

@media (max-width: 980px) {
  .course-card-pro,
  .course-card-pro:nth-child(-n+2) { grid-column: span 6; }
}

@media (max-width: 680px) {
  .course-card-pro,
  .course-card-pro:nth-child(-n+2) { grid-column: 1 / -1; }
}
.catalog-group--software .course-card-pro__visual img[src*="software-arcgis-desktop-v3"],.catalog-group--software .course-card-pro__visual img[src*="software-arcgis-pro-v3"]{width:98%;height:100%;padding:6px;object-fit:contain;filter:drop-shadow(0 16px 18px rgba(75,8,18,.16))}.catalog-group--software .course-card-pro:hover .course-card-pro__visual img[src*="software-arcgis-desktop-v3"],.catalog-group--software .course-card-pro:hover .course-card-pro__visual img[src*="software-arcgis-pro-v3"]{transform:scale(1.025);filter:drop-shadow(0 20px 22px rgba(75,8,18,.2))}

/* Escala ligeramente menor y uniforme para todas las ilustraciones de software. */
.catalog-group--software .course-card-pro__visual img,
.catalog-group--software .course-card-pro__visual img[src*="software-arcgis-desktop-v3"],
.catalog-group--software .course-card-pro__visual img[src*="software-arcgis-pro-v3"] {
  width: 174px;
  height: 174px;
  padding: 0;
  object-fit: contain;
}

/* Afiches 2026: la imagen ocupa toda la tarjeta y la acción queda superpuesta. */
.course-card-pro,
.course-card-pro:nth-child(-n+2) {
  aspect-ratio: 1;
  min-height: 0;
  background: #71101f;
  border: 0;
  border-radius: 14px;
}

.course-card-pro__visual,
.course-card-pro:nth-child(-n+2) .course-card-pro__visual,
.catalog-group--software .course-card-pro__visual {
  position: absolute;
  inset: 0;
  aspect-ratio: auto;
  min-height: 0;
  border: 0;
  background: #71101f;
}

.course-card-pro__visual::after {
  inset: 0;
  border: 0;
  border-radius: 0;
  background: linear-gradient(to top, rgba(36, 2, 8, .58) 0, rgba(36, 2, 8, 0) 30%);
}

.course-card-pro__visual img,
.course-card-pro:nth-child(-n+2) .course-card-pro__visual img,
.catalog-group--software .course-card-pro__visual img,
.catalog-group--software .course-card-pro__visual img[src*="software-arcgis-desktop"],
.catalog-group--software .course-card-pro__visual img[src*="software-arcgis-pro"] {
  width: 100%;
  height: 100%;
  padding: 0;
  object-fit: cover;
  filter: none;
}

.course-card-pro:hover .course-card-pro__visual img,
.course-card-pro:focus-within .course-card-pro__visual img,
.catalog-group--software .course-card-pro:hover .course-card-pro__visual img {
  transform: scale(1.025);
  filter: none;
}

.course-card-pro__body {
  position: absolute;
  z-index: 3;
  inset: 0;
  display: block;
  min-height: 0;
  padding: 0;
  pointer-events: none;
}

.course-card-pro__body h3,
.course-card-pro__category,
.course-card-pro__number {
  display: none;
}

.course-card-pro__actions {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  left: 1rem;
  justify-content: center;
  margin: 0;
  pointer-events: auto;
}

.course-card-pro__action,
.course-card-pro__actions .course-card-pro__action {
  min-height: 44px;
  margin: 0;
  padding: 0 1.35rem;
  color: #a3182a;
  background: #fff;
  border: 1px solid rgba(255,255,255,.92);
  border-radius: 7px;
  box-shadow: 0 9px 24px rgba(36,2,8,.28);
  font-size: .72rem;
}

.course-card-pro:hover .course-card-pro__action,
.course-card-pro:focus-within .course-card-pro__action {
  color: #fff;
  background: #a3182a;
  border-color: #fff;
  box-shadow: 0 10px 26px rgba(36,2,8,.36);
}

@media (max-width: 680px) {
  .course-card-pro,
  .course-card-pro:nth-child(-n+2) {
    aspect-ratio: 1;
    min-height: 0;
  }
}

/* Índice lateral para navegación directa entre cursos. */
.course-index {
  position: fixed;
  z-index: 20;
  top: 50%;
  left: max(14px, calc((100vw - 1510px) / 2));
  width: 220px;
  max-height: calc(100vh - 150px);
  overflow: hidden;
  color: #252529;
  background: rgba(255,255,255,.96);
  border: 1px solid #dedfe2;
  border-top: 4px solid #a3182a;
  border-radius: 12px;
  box-shadow: 0 16px 38px rgba(41,15,20,.13);
  transform: translateY(-50%);
  backdrop-filter: blur(12px);
}

.course-index__heading {
  display: flex;
  align-items: center;
  gap: .65rem;
  padding: .85rem 1rem .75rem;
  color: #a3182a;
  border-bottom: 1px solid #ececef;
  font-size: .75rem;
  letter-spacing: .07em;
  text-transform: uppercase;
}

.course-index__heading span {
  font-size: 1.15rem;
  line-height: 1;
}

.course-index__list {
  max-height: calc(100vh - 220px);
  overflow-y: auto;
  padding: .55rem;
  scrollbar-width: thin;
  scrollbar-color: #d2a3aa transparent;
}

.course-index__group {
  display: block;
  padding: .65rem .6rem .35rem;
  color: #8d8e93;
  font-size: .58rem;
  font-weight: 900;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.course-index a {
  display: block;
  padding: .48rem .65rem;
  color: #29292d;
  border-left: 3px solid transparent;
  border-radius: 5px;
  font-size: .68rem;
  font-weight: 650;
  line-height: 1.25;
  transition: color .18s ease, background-color .18s ease, border-color .18s ease, transform .18s ease;
}

.course-index a:hover,
.course-index a:focus-visible {
  color: #a3182a;
  background: #f8eaed;
  border-left-color: #a3182a;
  outline: 0;
  transform: translateX(3px);
}

.course-card-pro[id] {
  scroll-margin-top: 110px;
}

.course-card-pro:target {
  outline: 4px solid #a3182a;
  outline-offset: 5px;
  box-shadow: 0 24px 58px rgba(113,16,31,.28);
}

@media (max-width: 1219px) {
  .course-index {
    position: sticky;
    top: 78px;
    left: auto;
    width: min(calc(100% - 2rem), 1120px);
    max-height: none;
    margin: 0 auto 2rem;
    transform: none;
  }

  .course-index__heading {
    padding-block: .65rem;
  }

  .course-index__list {
    display: flex;
    gap: .35rem;
    max-height: none;
    overflow-x: auto;
    padding: .55rem;
  }

  .course-index__group { display: none; }

  .course-index a {
    flex: 0 0 auto;
    padding: .55rem .75rem;
    border: 1px solid #e4d4d7;
    border-left-width: 1px;
    border-radius: 999px;
    white-space: nowrap;
  }

  .course-index a:hover,
  .course-index a:focus-visible {
    color: #fff;
    background: #a3182a;
    border-color: #a3182a;
    transform: none;
  }
}

/* Índice compacto, desplegable y flotante: no desplaza el catálogo. */
.course-index {
  left: 12px;
  width: 176px;
  max-height: calc(100vh - 130px);
  overflow: visible;
  border: 1px solid #e2d9db;
  border-top: 0;
  border-radius: 10px;
  box-shadow: 0 14px 34px rgba(38,12,17,.14);
}

.course-index__heading {
  justify-content: center;
  min-height: 42px;
  padding: .65rem .8rem;
  color: #fff;
  background: #a3182a;
  border: 0;
  border-radius: 10px 10px 0 0;
  font-size: .72rem;
  letter-spacing: .15em;
}

.course-index__groups {
  max-height: calc(100vh - 180px);
  overflow-y: auto;
  padding: .4rem;
  scrollbar-width: thin;
  scrollbar-color: #d2a3aa transparent;
}

.course-index .course-index__group {
  display: block;
  padding: 0;
  color: #27272b;
  border-bottom: 1px solid #eee8e9;
  font-size: inherit;
  letter-spacing: normal;
  text-transform: none;
}

.course-index .course-index__group:last-child { border-bottom: 0; }

.course-index__group summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .5rem;
  padding: .68rem .58rem;
  color: #333338;
  border-radius: 6px;
  cursor: pointer;
  list-style: none;
  font-size: .64rem;
  font-weight: 850;
  letter-spacing: .055em;
  text-transform: uppercase;
  transition: color .18s ease, background-color .18s ease;
}

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

.course-index__group summary:hover,
.course-index__group summary:focus-visible {
  color: #a3182a;
  background: #f8eaed;
  outline: 0;
}

.course-index__group summary span {
  color: #a3182a;
  font-size: .85rem;
  transition: transform .2s ease;
}

.course-index__group[open] summary span { transform: rotate(180deg); }

.course-index .course-index__list {
  display: block;
  max-height: none;
  overflow: visible;
  padding: 0 .18rem .45rem;
}

.course-index .course-index__list a {
  display: block;
  padding: .42rem .48rem;
  overflow: hidden;
  color: #57575d;
  border: 0;
  border-left: 2px solid transparent;
  border-radius: 4px;
  font-size: .61rem;
  font-weight: 650;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: normal;
}

.course-index .course-index__list a:hover,
.course-index .course-index__list a:focus-visible {
  color: #a3182a;
  background: #fbf1f3;
  border-left-color: #a3182a;
  transform: translateX(2px);
}

@media (max-width: 1219px) {
  .course-index {
    position: sticky;
    top: 76px;
    left: auto;
    width: min(calc(100% - 2rem), 1120px);
    max-height: none;
    margin: 0 auto 1.5rem;
    transform: none;
  }

  .course-index__groups {
    display: grid;
    grid-template-columns: repeat(3, minmax(0,1fr));
    max-height: none;
    overflow: visible;
  }

  .course-index .course-index__group { border: 0; }
  .course-index .course-index__list { max-height: 180px; overflow-y: auto; }
}

@media (max-width: 680px) {
  .course-index {
    top: 64px;
    width: calc(100% - 1rem);
  }

  .course-index__groups { display: block; }
  .course-index .course-index__list { max-height: 190px; }
}

@media (max-width: 680px) {
  .course-index {
    top: 65px;
    width: calc(100% - 1rem);
    margin-bottom: 1.25rem;
    border-radius: 9px;
  }

  .course-index__heading strong { font-size: .68rem; }
}

/* Índice superior: cerrado inicialmente, sin recortes ni desplazamiento lateral. */
.course-index {
  position: relative;
  top: auto;
  left: auto;
  width: min(1120px, calc(100% - 2rem));
  max-height: none;
  margin: 0 auto 2.75rem;
  overflow: visible;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  transform: none;
  backdrop-filter: none;
}

.course-index__heading {
  justify-content: flex-start;
  min-height: auto;
  margin-bottom: .85rem;
  padding: 0 0 .7rem;
  color: #a3182a;
  background: transparent;
  border-bottom: 2px solid #a3182a;
  border-radius: 0;
  font-size: .78rem;
  letter-spacing: .18em;
}

.course-index__groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .8rem;
  max-height: none;
  overflow: visible;
  padding: 0;
}

.course-index .course-index__group {
  overflow: hidden;
  background: #fff;
  border: 1px solid #dddde1;
  border-radius: 9px;
  box-shadow: 0 7px 18px rgba(35,26,28,.055);
}

.course-index .course-index__group:last-child { border-bottom: 1px solid #dddde1; }

.course-index__group summary {
  min-height: 54px;
  padding: .8rem 1rem;
  color: #252529;
  border-radius: 8px;
  font-size: .72rem;
  letter-spacing: .08em;
}

.course-index__group summary:hover,
.course-index__group summary:focus-visible,
.course-index__group[open] summary {
  color: #a3182a;
  background: #fff4f6;
}

.course-index__group summary span {
  display: grid;
  place-items: center;
  flex: 0 0 27px;
  width: 27px;
  height: 27px;
  color: #fff;
  background: #a3182a;
  border-radius: 50%;
  font-size: 1.05rem;
  font-weight: 500;
  line-height: 1;
}

.course-index__group[open] summary span { transform: rotate(45deg); }

.course-index .course-index__list {
  max-height: none;
  overflow: visible;
  padding: .15rem .65rem .7rem;
  border-top: 1px solid #eee8e9;
}

.course-index .course-index__list a {
  padding: .52rem .58rem;
  overflow: visible;
  font-size: .68rem;
  line-height: 1.3;
  text-overflow: clip;
  white-space: normal;
}

@media (max-width: 760px) {
  .course-index {
    position: relative;
    top: auto;
    width: calc(100% - 1rem);
    margin-bottom: 2rem;
  }

  .course-index__groups {
    display: grid;
    grid-template-columns: 1fr;
  }

  .course-index .course-index__list {
    max-height: none;
    overflow: visible;
  }
}

/* Ubicación final: índice desplegable al lado izquierdo sin mover las tarjetas. */
@media (min-width: 1101px) {
  .course-index {
    position: fixed;
    z-index: 25;
    top: 50%;
    left: 14px;
    width: 184px;
    max-height: calc(100vh - 140px);
    margin: 0;
    overflow: visible;
    background: rgba(255,255,255,.98);
    border: 1px solid #ded6d8;
    border-radius: 10px;
    box-shadow: 0 14px 34px rgba(38,12,17,.15);
    transform: translateY(-50%);
    transition: width .22s ease, box-shadow .22s ease;
    backdrop-filter: blur(10px);
  }

  .course-index:has(.course-index__group[open]) {
    width: 270px;
    box-shadow: 0 18px 44px rgba(38,12,17,.2);
  }

  .course-index__heading {
    justify-content: center;
    margin: 0;
    padding: .72rem .8rem;
    color: #fff;
    background: #a3182a;
    border: 0;
    border-radius: 9px 9px 0 0;
  }

  .course-index__groups {
    display: block;
    max-height: calc(100vh - 195px);
    overflow-y: auto;
    padding: .45rem;
  }

  .course-index .course-index__group {
    margin: 0;
    border: 0;
    border-bottom: 1px solid #eee8e9;
    border-radius: 0;
    box-shadow: none;
  }

  .course-index .course-index__group:last-child { border-bottom: 0; }

  .course-index__group summary {
    min-height: 48px;
    padding: .65rem .6rem;
  }

  .course-index .course-index__list {
    padding: .18rem .25rem .6rem;
  }

  .course-index .course-index__list a {
    overflow: visible;
    font-size: .67rem;
    text-overflow: clip;
    white-space: normal;
  }
}

/* Los tres filtros conservan exactamente la misma extensión. */
.course-index__groups,
.course-index .course-index__group,
.course-index__group summary,
.course-index .course-index__list {
  width: 100%;
  box-sizing: border-box;
}

/* Encabezado estático del filtro lateral. */
.course-index__title {
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 46px;
  margin: 0 0 .18rem;
  padding: .6rem .85rem;
  color: #fff;
  background: #a3182a;
  border: 0;
  border-radius: 8px;
  box-sizing: border-box;
  font-size: .72rem;
  font-weight: 850;
  letter-spacing: .09em;
  text-transform: uppercase;
  box-shadow: 0 8px 22px rgba(35, 26, 28, .14);
  pointer-events: none;
}

/* El encabezado siempre ocupa la fila superior del panel. */
.course-index {
  display: flex;
  flex-direction: column;
  align-items: stretch;
}

.course-index__title {
  flex: 0 0 auto;
  order: -1;
}

.course-index__groups {
  flex: 1 1 auto;
  align-self: stretch;
}

/* Separación mínima entre CURSOS y el primer filtro. */
.course-index__title {
  margin-bottom: 2px;
}

.course-index__groups {
  flex: 0 0 auto;
  margin: 0;
  padding: 0 !important;
}

/* Interacción limpia: sin rayas ni selección persistente. */
.course-index .course-index__group,
.course-index .course-index__group:last-child {
  border: 0;
}

.course-index__group summary,
.course-index__group[open] summary {
  color: #252529;
  background: #fff;
  border: 0;
  outline: 0;
  box-shadow: none;
  text-decoration: none;
}

.course-index__group summary::before,
.course-index__group summary::after,
.course-index .course-index__list a::before,
.course-index .course-index__list a::after {
  display: none !important;
  content: none !important;
}

.course-index__group summary:hover,
.course-index__group summary:focus-visible {
  color: #fff;
  background: #8f0f24;
  border: 0;
  outline: 0;
  box-shadow: none;
  text-decoration: none;
}

.course-index__group[open] summary span {
  color: #8f0f24;
  background: #fff;
}

.course-index .course-index__list,
.course-index .course-index__list a,
.course-index .course-index__list a:hover,
.course-index .course-index__list a:focus-visible {
  border: 0;
  outline: 0;
  box-shadow: none;
  text-decoration: none;
}

/* Disposición solicitada: encabezado superior y controles con icono a la izquierda. */
.course-index {
  position: relative;
  top: auto;
  left: auto;
  width: min(1120px, calc(100% - 2rem));
  max-height: none;
  margin: 0 auto 2.5rem;
  overflow: visible;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  transform: none;
  backdrop-filter: none;
}

.course-index:has(.course-index__group[open]) { width: min(1120px, calc(100% - 2rem)); }

.course-index__heading {
  justify-content: flex-start;
  margin: 0 0 .8rem;
  padding: 0;
  color: #a3182a;
  background: transparent;
  border: 0;
  border-radius: 0;
  font-size: .82rem;
  letter-spacing: .18em;
}

.course-index__groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .75rem;
  max-height: none;
  overflow: visible;
  padding: 0;
}

.course-index .course-index__group,
.course-index .course-index__group:last-child {
  overflow: hidden;
  margin: 0;
  background: #fff;
  border: 1px solid #dedde1;
  border-radius: 8px;
  box-shadow: 0 6px 16px rgba(35,26,28,.05);
}

.course-index__group summary {
  justify-content: flex-start;
  min-height: 52px;
  gap: .7rem;
  padding: .75rem .9rem;
  border-radius: 7px;
}

.course-index__group summary span {
  order: -1;
  flex: 0 0 27px;
}

.course-index__group summary:hover,
.course-index__group summary:focus-visible,
.course-index__group[open] summary {
  color: #fff;
  background: #8f0f24;
}

.course-index__group summary:hover span,
.course-index__group summary:focus-visible span,
.course-index__group[open] summary span {
  color: #8f0f24;
  background: #fff;
}

.course-index .course-index__list {
  max-height: none;
  overflow: visible;
  padding: .25rem .65rem .7rem;
  border: 0;
}

.course-index .course-index__list a {
  border: 0;
}

.course-index .course-index__list a:hover,
.course-index .course-index__list a:focus-visible {
  color: #fff;
  background: #a3182a;
  border: 0;
  transform: none;
}

/* Lectura completa de los nombres al desplegar el menú lateral. */
@media (min-width: 1101px) {
  .course-index {
    left: 16px;
    width: 220px;
    transition: width .2s ease;
  }

  .course-index:has(.course-index__group[open]) {
    left: 16px;
    width: 300px;
  }

  .course-index .course-index__list {
    padding: .3rem .55rem .7rem;
  }

  .course-index .course-index__list a {
    width: 100%;
    padding: .52rem .62rem;
    overflow: visible;
    font-size: .72rem;
    line-height: 1.4;
    text-overflow: clip;
    white-space: normal;
    overflow-wrap: anywhere;
  }
}

@media (max-width: 760px) {
  .course-index { width: calc(100% - 1rem); }
  .course-index__groups { grid-template-columns: 1fr; }
}

/* Menú final: sin rótulo y completamente alineado al lado izquierdo. */
.course-index {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto 2rem;
}

.course-index__heading { display: none; }

.course-index__groups {
  grid-template-columns: minmax(230px, 300px);
  justify-content: start;
}

@media (max-width: 760px) {
  .course-index {
    width: calc(100% - 1rem);
    margin-bottom: 1.5rem;
  }

  .course-index__groups {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Navegación lateral: botones fijados al lado izquierdo de la página. */
@media (min-width: 1101px) {
  .course-index,
  .course-index:has(.course-index__group[open]) {
    position: fixed;
    z-index: 25;
    top: 50%;
    left: 12px;
    width: 210px;
    max-height: calc(100vh - 130px);
    margin: 0;
    transform: translateY(-50%);
  }

  .course-index__groups {
    display: grid;
    grid-template-columns: 1fr;
    gap: .5rem;
    max-height: calc(100vh - 130px);
    overflow-y: auto;
    padding: 0;
  }

  .course-index .course-index__group {
    box-shadow: 0 8px 22px rgba(35, 26, 28, .12);
  }

  .course-index__group summary {
    min-height: 46px;
    padding: .6rem .7rem;
  }

  .course-index .course-index__list a {
    font-size: .7rem;
    white-space: normal;
  }
}

/* Estado definitivo: el color aparece únicamente bajo el puntero. */
.course-index .course-index__group,
.course-index .course-index__group:last-child,
.course-index .course-index__list {
  border: 0;
}

.course-index__group summary,
.course-index__group[open] summary {
  color: #252529;
  background: #fff;
  border: 0;
  outline: 0;
  box-shadow: none;
  text-decoration: none;
}

.course-index__group[open] summary span {
  color: #a3182a;
  background: #f8eaed;
}

.course-index__group summary:hover,
.course-index__group summary:focus-visible {
  color: #fff;
  background: #8f0f24;
}

.course-index__group summary:hover span,
.course-index__group summary:focus-visible span {
  color: #8f0f24;
  background: #fff;
}

.course-index__group summary::before,
.course-index__group summary::after,
.course-index .course-index__list a::before,
.course-index .course-index__list a::after {
  display: none !important;
  content: none !important;
}

.course-index .course-index__list a,
.course-index .course-index__list a:hover,
.course-index .course-index__list a:focus-visible {
  border: 0;
  outline: 0;
  box-shadow: none;
  text-decoration: none;
  transform: none;
}

/* Ajuste final de posición y anchura para nombres extensos. */
@media (min-width: 1101px) {
  .course-index {
    left: 8px;
    width: 190px;
    transition: width .2s ease;
  }

  .course-index:has(.course-index__group[open]) {
    left: 8px;
    width: 240px;
  }

  .course-index .course-index__list {
    padding: .3rem .55rem .7rem;
  }

  .course-index .course-index__list a {
    width: 100%;
    padding: .52rem .62rem;
    overflow: visible;
    font-size: .61rem;
    line-height: 1.4;
    text-overflow: clip;
    white-space: normal;
    overflow-wrap: anywhere;
  }
}

/* Garantía final de anchura uniforme en los tres filtros. */
.course-index__groups,
.course-index .course-index__group,
.course-index__group summary,
.course-index .course-index__list {
  width: 100%;
  box-sizing: border-box;
}