/* Bookshelf: card-based library UI adapted to the current visual system. */
.bookshelf-page {
  max-width: 72rem;
  margin-top: 4rem;
}

.bookshelf-hero {
  max-width: 42rem;
  padding-bottom: 5rem;
}

.bookshelf-eyebrow,
.book-status {
  color: var(--color-zinc-500);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.bookshelf-hero h1 {
  color: var(--color-zinc-800);
  font-size: 2.25rem;
  line-height: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin: 1rem 0 1.25rem;
  transition: color 0.3s ease;
}

.bookshelf-intro {
  color: var(--color-zinc-600);
  font-size: 1.25rem;
  line-height: 1.5;
  margin: 0;
  transition: color 0.3s ease;
}

.bookshelf-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.bookshelf-filters a {
  border: 1px solid var(--color-zinc-200);
  border-radius: 9999px;
  color: var(--color-zinc-700);
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1;
  padding: 0.65rem 0.85rem;
  text-decoration: none;
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.bookshelf-filters a:hover {
  border-color: var(--color-link-hover);
  color: var(--color-link-hover);
}

.bookshelf-filters a.is-active {
  background-color: var(--color-zinc-800);
  border-color: var(--color-zinc-800);
  color: var(--color-zinc-50);
}

.bookshelf-results {
  border-top: 1px solid var(--color-zinc-200);
  transition: border-color 0.3s ease;
}

.book-year-separator {
  align-items: center;
  color: var(--color-zinc-500);
  display: flex;
  font-size: 0.875rem;
  font-weight: 700;
  gap: 1rem;
  letter-spacing: 0.04em;
  padding-top: 2rem;
  transition: color 0.3s ease;
}

.book-year-separator::after {
  background-color: var(--color-zinc-200);
  content: "";
  flex: 1;
  height: 1px;
  transition: background-color 0.3s ease;
}

.book-card {
  display: grid;
  grid-template-columns: 8rem minmax(0, 1fr);
  gap: 1.5rem;
  padding: 2rem 0 4rem;
}

.book-card + .book-card {
  border-top: 1px solid var(--color-zinc-100);
}

.book-cover {
  display: block;
  width: 8rem;
  height: 12rem;
  border: 1px solid var(--color-zinc-200);
  object-fit: cover;
}

.book-cover-fallback {
  align-items: center;
  background-color: var(--color-zinc-100);
  color: var(--color-zinc-500);
  display: flex;
  font-size: 0.875rem;
  justify-content: center;
  line-height: 1.6;
  padding: 0.875rem;
  text-align: center;
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.book-details {
  min-width: 0;
  padding-top: 0.125rem;
}

.book-status {
  margin: 0 0 1.75rem;
}

.book-details h2 {
  color: var(--color-zinc-800);
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.25;
  margin: 0;
  transition: color 0.3s ease;
}

.book-details h2 a {
  text-decoration: none;
}

.book-details h2 a:hover {
  color: var(--color-link-hover);
}

.book-author,
.book-date {
  color: var(--color-zinc-500);
  font-size: 1rem;
  line-height: 1.5;
  margin: 0.75rem 0 0;
  transition: color 0.3s ease;
}

.book-rating {
  color: var(--color-link-hover);
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  margin: 1.25rem 0 0;
}

.book-date {
  margin-top: 1.25rem;
}

.book-notes,
.book-quotes {
  max-width: 42rem;
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-zinc-100);
}

.book-notes h3,
.book-quotes h3 {
  color: var(--color-zinc-800);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .04em;
  margin: 0 0 .75rem;
  text-transform: uppercase;
}

.book-notes p,
.book-quotes blockquote {
  color: var(--color-zinc-600);
  line-height: 1.75;
  margin: 0;
  white-space: pre-line;
}

.book-quotes blockquote {
  padding-left: 1rem;
  border-left: 2px solid var(--color-link-hover);
  font-style: italic;
}

.bookshelf-empty {
  color: var(--color-zinc-500);
  margin: 2rem 0;
}

@media (min-width: 640px) {
  .bookshelf-page {
    margin-top: 8rem;
  }

  .bookshelf-hero h1 {
    font-size: 3rem;
    line-height: 3.5rem;
  }

  .bookshelf-intro {
    font-size: 1.5rem;
  }
}

@media (max-width: 639px) {
  .bookshelf-hero {
    padding-bottom: 4rem;
  }

  .book-card {
    grid-template-columns: 1fr;
    gap: 1.75rem;
    padding: 2rem 0 4rem;
  }

  .book-details {
    padding: 0;
  }

  .book-status {
    margin-bottom: 1.25rem;
  }

  .book-details h2 {
    font-size: 1.5rem;
  }
}