/* Library experience: concise homepage preview with accessible progressive disclosure. */
.library-overview {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
  margin: 0 0 var(--space-5);
}

.library-stat {
  min-width: 0;
  padding: 14px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-soft);
}

.library-stat strong {
  display: block;
  color: var(--color-text);
  font-size: var(--type-body);
  font-weight: 800;
}

.library-stat span {
  display: block;
  margin-top: 3px;
  color: var(--color-text-muted);
  font-size: var(--type-meta);
  line-height: 1.7;
}

.library-subhead {
  margin: 0 0 var(--space-3);
  color: var(--color-text);
  font-size: var(--type-h3);
  font-weight: 800;
}

.featured-books {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.featured-book {
  min-width: 0;
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #fffdf9;
}

.featured-book .book-kicker {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  margin-bottom: var(--space-2);
  padding: 4px 9px;
  border-radius: 999px;
  color: var(--color-accent-hover);
  background: var(--color-accent-soft);
  font-size: var(--type-meta);
  font-weight: 800;
}

.featured-book h3 {
  margin: 0;
  color: var(--color-text);
  font-size: 1rem;
  line-height: 1.7;
  font-weight: 800;
  direction: ltr;
  unicode-bidi: isolate;
  overflow-wrap: anywhere;
}

.featured-book .book-meta {
  display: block;
  margin-top: 4px;
}

.featured-book .book-why {
  margin-top: var(--space-2);
}

.book-catalog {
  margin-top: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  overflow: clip;
}

.book-catalog summary {
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: 12px 16px;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  font-size: var(--type-support);
  font-weight: 800;
  cursor: pointer;
  list-style: none;
}

.book-catalog summary::-webkit-details-marker { display: none; }
.book-catalog summary::after {
  content: "+";
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--color-primary);
  background: #fff;
  border: 1px solid var(--color-border);
  font-size: 18px;
  line-height: 1;
}
.book-catalog[open] summary::after { content: "−"; }
.book-catalog summary:hover { background: #ece5f5; }

.book-catalog-body {
  padding: var(--space-5);
}

.book-catalog .book-group:first-child { margin-top: 0; }
.book-catalog .book-group-title {
  margin-bottom: var(--space-2);
}

.book-catalog .book-group-title span {
  color: var(--color-text-muted);
  background: var(--color-surface-soft);
}

@media (max-width: 680px) {
  .library-overview,
  .featured-books { grid-template-columns: 1fr; }

  .library-overview { gap: var(--space-2); }
  .featured-book { padding: var(--space-4); }
  .book-catalog-body { padding: var(--space-4); }
}

@media (max-width: 380px) {
  .library-stat,
  .featured-book,
  .book-catalog-body { padding-inline: 14px; }

  .book-catalog summary { padding-inline: 14px; }
}