.books-shell {
  display: contents;
}

body {
  background: #edf5fb !important;
}

/* Identidad del catálogo, conservando la estructura visual de Lumbreras. */
.university-books .lumbreras-hero-copy {
  min-width: 0;
}

.university-books .lumbreras-hero h1 {
  max-width: 100%;
  font-size: clamp(3.5rem, 6.3vw, 6.6rem);
}

.university-books .lumbreras-hero h1 em,
.university-books .catalog-eyebrow,
.university-books .catalog-metrics b {
  color: #0b7f8f;
}

.university-books .catalog-eyebrow i {
  background: linear-gradient(90deg, #0b7f8f, #45b9bd);
}

.university-books .brand-halo {
  background: radial-gradient(circle, rgba(11, 127, 143, .2), rgba(11, 127, 143, 0) 68%);
}

.author-monogram {
  position: relative;
  display: grid;
  place-items: center;
  width: 150px;
  height: 150px;
  border: 1px solid rgba(11, 127, 143, .2);
  border-radius: 50%;
  color: #fff;
  background: linear-gradient(145deg, #071f3d, #0b7f8f);
  box-shadow: 0 20px 45px rgba(7, 45, 74, .2);
  font: 700 4.2rem/1 "Bebas Neue", sans-serif;
  letter-spacing: .04em;
}

.university-books .lumbreras-brand-card small {
  margin-top: 12px;
  text-align: center;
}

/* Búsqueda y filtros. */
.catalog-tools {
  position: sticky;
  top: 74px;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: .7rem;
  margin: 2rem 0;
  border: 1px solid var(--catalog-line);
  border-radius: 24px;
  padding: .8rem;
  background: rgba(255, 255, 255, .88);
  box-shadow: 0 18px 45px rgba(31, 60, 104, .1);
  backdrop-filter:none;
}

.catalog-search {
  min-width: 180px;
  height: 46px;
  flex: 1;
  border: 1px solid var(--catalog-line);
  border-radius: 14px;
  padding: 0 1rem;
  background: rgba(248, 251, 255, .96);
  color: var(--catalog-ink);
  font: 600 .83rem/1 "DM Sans", sans-serif;
  outline: none;
}

.catalog-search:focus {
  border-color: rgba(11, 127, 143, .55);
  box-shadow: 0 0 0 4px rgba(11, 127, 143, .1);
}

.language-filters {
  display: flex;
  flex-wrap: wrap;
  gap: .42rem;
}

.language-filter {
  height: 40px;
  border: 1px solid var(--catalog-line);
  border-radius: 999px;
  padding: 0 .85rem;
  background: #fff;
  color: var(--catalog-muted);
  font: 700 .7rem/1 "DM Sans", sans-serif;
  cursor: pointer;
}

.language-filter.is-active {
  border-color: transparent;
  color: #fff;
  background: #0a2948;
}

.catalog-result {
  flex: none;
  padding: 0 .35rem;
  color: var(--catalog-muted);
  font: 700 .7rem/1 "DM Sans", sans-serif;
}

/* Colección y tarjetas. */
.catalog-collection-raymond-chang {
  border-color: rgba(11, 127, 143, .22);
  background: linear-gradient(145deg, rgba(255, 255, 255, .96), rgba(232, 248, 248, .88));
}

.catalog-collection-raymond-chang .collection-number,
.catalog-collection-raymond-chang .collection-subheading span,
.catalog-collection-raymond-chang .book-series {
  color: #0b7f8f;
}

.catalog-collection-raymond-chang .collection-count,
.catalog-collection-raymond-chang .collection-subheading strong {
  color: #087179;
  background: rgba(11, 127, 143, .1);
}

.catalog-collection-raymond-chang .book-card:hover {
  border-color: rgba(11, 127, 143, .42);
  box-shadow: 0 22px 42px rgba(11, 127, 143, .14);
}

.book-cover {
  position: relative;
}

.language-badge {
  position: absolute;
  top: .7rem;
  right: .7rem;
  border: 1px solid rgba(255, 255, 255, .28);
  border-radius: 999px;
  padding: .42rem .58rem;
  color: #fff;
  background: rgba(7, 38, 66, .88);
  font: 700 .62rem/1 "DM Sans", sans-serif;
  backdrop-filter:none;
}

.book-card[hidden],
.collection-subsection[hidden] {
  display: none;
}

.empty-state {
  display: none;
  margin: 1.2rem 0;
  border: 1px dashed rgba(11, 127, 143, .35);
  border-radius: 18px;
  padding: 1.2rem;
  color: var(--catalog-muted);
  text-align: center;
  font: 600 .84rem/1.5 "DM Sans", sans-serif;
}

.empty-state.is-visible {
  display: block;
}

/* El tema oscuro usa azul marino: evita fondos negros accidentales. */
html[data-universe-theme="dark"][data-universe-page="library"]:not([data-universe-page="home"]) body {
  background: linear-gradient(145deg, #071426, #0a2039 55%, #0a3140) !important;
}

html[data-universe-theme="dark"] body .university-books .catalog-tools {
  background: #0b2948 !important;
}

html[data-universe-theme="dark"] :is(.catalog-search, .language-filter) {
  color: #e6f4ff;
  background: rgba(12, 42, 75, .92);
}

html[data-universe-theme="dark"] .language-filter.is-active {
  color: #06172a;
  background: #7edce0;
}

html[data-universe-theme="dark"] body .university-books .catalog-collection-raymond-chang {
  border-color: rgba(93, 199, 204, .22);
  background: linear-gradient(145deg, rgba(9, 43, 79, .96), rgba(7, 47, 65, .92)) !important;
}

html[data-universe-theme="dark"] body .university-books .book-card,
html[data-universe-theme="dark"] body .university-books .catalog-next,
html[data-universe-theme="dark"] body .university-books .lumbreras-brand-card {
  background: #0b2948 !important;
}

html[data-universe-theme="dark"] body .university-books .collection-heading,
html[data-universe-theme="dark"] body .university-books .collection-subheading {
  background: transparent !important;
}

html[data-universe-theme="dark"] body .university-books .book-cover {
  background: #eef4f8 !important;
}

/* Tabletas y pantallas de escritorio estrechas. */
@media (max-width: 1180px) {
  .university-books .lumbreras-hero-grid {
    grid-template-columns: minmax(0, 1fr) !important;
    gap: 1.5rem;
  }

  .university-books .lumbreras-hero h1 {
    font-size: clamp(3.65rem, 6vw, 5rem);
  }

  .university-books .lumbreras-brand-card {
    min-height: 210px;
    padding: 1.4rem;
  }

  .author-monogram {
    width: 125px;
    height: 125px;
    font-size: 3.5rem;
  }
}

@media (max-width: 900px) {
  .university-books .lumbreras-hero h1 {
    font-size: clamp(3.5rem, 10vw, 5rem);
  }

  .university-books .lumbreras-brand-card {
    min-height: 180px;
  }

  .catalog-tools {
    position: relative;
    top: auto;
    align-items: stretch;
    flex-direction: column;
  }

  .catalog-result {
    padding: .35rem;
  }
}

@media (max-width: 760px) {
  .university-books .lumbreras-hero h1 {
    font-size: clamp(3rem, 13vw, 4.8rem);
    line-height: .86;
  }

  .university-books .lumbreras-hero h1 em {
    font-size: .86em;
  }

  .author-monogram {
    width: 112px;
    height: 112px;
    font-size: 3.1rem;
  }
}

@media (max-width: 520px) {
  .university-books.lumbreras-page {
    width: min(100% - 1rem, 1280px);
    padding-top: 5.25rem;
  }

  .university-books .lumbreras-hero {
    border-radius: 22px;
    padding: 1.2rem;
  }

  .university-books .catalog-breadcrumb {
    gap: .45rem;
    margin-bottom: 1rem;
    font-size: .68rem;
  }

  .university-books .catalog-eyebrow {
    margin-bottom: .9rem;
    font-size: .65rem;
  }

  .university-books .lumbreras-hero h1 {
    font-size: clamp(2.75rem, 14.2vw, 4rem);
  }

  .university-books .lumbreras-hero h1 em {
    font-size: .68em;
    letter-spacing: -.035em;
  }

  .university-books .lumbreras-hero-grid,
  .university-books .lumbreras-hero-copy,
  .university-books .catalog-metrics {
    width: 100%;
    min-width: 0;
    max-width: 100%;
  }

  .university-books .lumbreras-hero-copy {
    overflow: hidden;
  }

  .university-books .catalog-metrics span {
    min-width: 0;
  }

  .university-books .lumbreras-hero-copy > p {
    margin: 1.1rem 0 1.35rem;
    font-size: .92rem;
    line-height: 1.55;
  }

  .university-books .catalog-metrics {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: .35rem;
  }

  .university-books .catalog-metrics span {
    justify-content: center;
    flex-direction: column;
    align-items: center;
    gap: .22rem;
    padding: .55rem .25rem;
    font-size: .54rem;
    text-align: center;
  }

  .catalog-tools {
    margin: 1rem 0;
    border-radius: 18px;
    padding: .65rem;
  }

  .language-filters {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .language-filter {
    width: 100%;
    padding: 0 .45rem;
  }

  .university-books .catalog-collection {
    margin-top: 1rem;
  }

  .university-books .collection-heading h2 {
    font-size: clamp(2.4rem, 13vw, 3.4rem);
    overflow-wrap: anywhere;
  }

  .university-books .collection-count,
  .university-books .collection-subheading strong {
    white-space: normal;
  }

  .university-books .collection-subsection {
    margin-top: 1.7rem;
  }

  .university-books .collection-subsection + .collection-subsection {
    margin-top: 2rem;
    padding-top: 2rem;
  }

  .university-books .collection-subheading h3 {
    font-size: clamp(1.35rem, 6vw, 1.8rem);
    overflow-wrap: anywhere;
  }

  .university-books .catalog-next {
    gap: .85rem;
    border-radius: 19px;
    padding: 1rem;
  }
}

@media (max-width: 410px) {
  .university-books .lumbreras-hero h1 {
    font-size: clamp(2.6rem, 14vw, 3.45rem);
  }

  .university-books .lumbreras-hero h1 em {
    font-size: .67em;
  }
}

/* Navegación móvil en dos filas, sin aumentar el ancho de la página. */
@media (max-width: 680px) {
  html[data-universe-page="library"] body > nav {
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) !important;
    width: calc(100vw - 14px) !important;
    max-width: calc(100vw - 14px) !important;
    gap: .35rem !important;
    overflow: hidden !important;
    padding: .5rem .6rem !important;
  }

  html[data-universe-page="library"] body > nav .nav-logo {
    grid-column: 1 !important;
    grid-row: 1 !important;
    max-width: 100% !important;
  }

  html[data-universe-page="library"] body > nav .nav-links {
    grid-column: 1 !important;
    grid-row: 2 !important;
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
    justify-self: stretch !important;
    justify-content: flex-start !important;
    overflow-x: auto !important;
  }

  html[data-universe-page="library"] body > nav .nav-actions {
    display: none !important;
  }
}