/* Book Detail Page
 * ==========================================================================
 * Individual book page styling
 */

.book-detail {
  padding: var(--size-6) 0;
}

.book-detail__container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 var(--size-4);
}

/* Book Header Section
 * -------------------------------------------------------------------------- */
.book-detail__header {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--size-8);
  margin-bottom: var(--size-8);
  align-items: start;
}

@media (max-width: 768px) {
  .book-detail__header {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

/* Book Cover
 * -------------------------------------------------------------------------- */
.book-detail__cover {
  position: sticky;
  top: var(--size-4);
}

@media (max-width: 768px) {
  .book-detail__cover {
    position: static;
    display: flex;
    justify-content: center;
  }
}

.book-detail__cover-image {
  width: 100%;
  max-width: 300px;
  aspect-ratio: 2 / 3;
  object-fit: cover;
  border-radius: var(--radius-medium);
  box-shadow: 0 8px 24px oklch(from var(--color-shadow) l c h / 0.15);
}

.book-detail__cover-placeholder {
  width: 100%;
  max-width: 300px;
  aspect-ratio: 2 / 3;
  background: linear-gradient(
    135deg,
    var(--color-bg--container),
    var(--color-bg--surface-container)
  );
  border-radius: var(--radius-medium);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--size-4);
  color: var(--color-ink--muted);
  box-shadow: 0 2px 8px oklch(from var(--color-shadow) l c h / 0.1);
}

.book-detail__cover-placeholder span {
  font-size: var(--font-size-small);
  opacity: 0.7;
}

/* Book Info
 * -------------------------------------------------------------------------- */
.book-detail__info {
  padding-top: var(--size-2);
}

@media (max-width: 768px) {
  .book-detail__info {
    text-align: center;
  }
}

.book-detail__title {
  font-size: var(--font-size-xx-large);
  font-weight: 700;
  line-height: 1.1;
  margin: 0 0 var(--size-3);
  color: var(--color-ink);
}

@media (max-width: 768px) {
  .book-detail__title {
    font-size: var(--font-size-x-large);
  }
}

.book-detail__subtitle {
  font-size: var(--font-size-large);
  font-weight: 400;
  font-style: italic;
  margin: 0 0 var(--size-4);
  color: var(--color-ink--muted);
}

.book-detail__author {
  font-size: var(--font-size-medium);
  margin: 0 0 var(--size-4);
  color: var(--color-ink--muted);
}

.book-detail__series {
  margin-bottom: var(--size-4);
}

.book-detail__series-info {
  font-size: var(--font-size-small);
  color: var(--color-ink--muted);
  margin: 0;
  font-style: italic;
}

.book-detail__series-link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
}

.book-detail__series-link:hover {
  text-decoration: underline;
}

.book-detail__meta {
  font-size: var(--font-size-small);
  color: var(--color-ink--muted);
  margin-bottom: var(--size-2);
}

.book-detail__isbn {
  font-size: var(--font-size-x-small);
  color: var(--color-ink--muted);
  margin-bottom: var(--size-4);
  font-family: var(--font-mono);
}

/* Purchase Section
 * -------------------------------------------------------------------------- */
.book-detail__purchase {
  margin-top: var(--size-6);
  padding-top: var(--size-6);
  border-top: 1px solid var(--color-border--light);
}

.book-detail__purchase-title {
  font-size: var(--font-size-medium);
  font-weight: 600;
  margin: 0 0 var(--size-3);
  color: var(--color-ink);
}

.book-detail__purchase-links {
  display: flex;
  gap: var(--size-3);
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .book-detail__purchase-links {
    justify-content: center;
  }
}

/* Book Content
 * -------------------------------------------------------------------------- */
.book-detail__content {
  margin: var(--size-8) 0;
  padding: var(--size-8) 0;
}

.book-detail__description,
.book-detail__excerpt {
  margin-bottom: var(--size-6);
}

.book-detail__description:last-child,
.book-detail__excerpt:last-child {
  margin-bottom: 0;
}

.book-detail__section-title {
  font-size: var(--font-size-large);
  font-weight: 600;
  margin: 0 0 var(--size-4);
  color: var(--color-ink);
}

.book-detail__excerpt-text {
  font-size: var(--font-size-medium);
  line-height: 1.7;
  color: var(--color-ink--muted);
}

/* Prose Content (for rich text)
 * -------------------------------------------------------------------------- */
.book-detail .prose {
  font-size: var(--font-size-small);
  line-height: 1.8;
  color: var(--color-ink);
}

.book-detail .prose p {
  margin-bottom: var(--size-4);
}

.book-detail .prose p:last-child {
  margin-bottom: 0;
}

.book-detail .prose h1,
.book-detail .prose h2,
.book-detail .prose h3,
.book-detail .prose h4,
.book-detail .prose h5,
.book-detail .prose h6 {
  margin-top: var(--size-6);
  margin-bottom: var(--size-3);
  font-weight: 600;
}

.book-detail .prose ul,
.book-detail .prose ol {
  margin-bottom: var(--size-4);
  padding-left: var(--size-6);
}

.book-detail .prose li {
  margin-bottom: var(--size-2);
}

.book-detail .prose blockquote {
  border-left: 3px solid var(--color-primary);
  padding-left: var(--size-4);
  margin: var(--size-4) 0;
  font-style: italic;
  color: var(--color-ink--muted);
}

/* Related Books Section
 * -------------------------------------------------------------------------- */
.book-detail__related {
  margin-top: var(--size-8);
}

/* Navigation
 * -------------------------------------------------------------------------- */
.book-detail__navigation {
  margin-top: var(--size-8);
  text-align: center;
}

.book-detail__back-link {
  color: var(--color-primary);
  text-decoration: none;
  font-size: var(--font-size-small);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: var(--size-2);
  transition: gap 0.2s ease;
}

.book-detail__back-link:hover {
  gap: var(--size-3);
  text-decoration: underline;
}

/* Dark Mode Adjustments
 * -------------------------------------------------------------------------- */
[data-color-scheme="dark"] .book-detail__cover-placeholder {
  background: linear-gradient(
    135deg,
    var(--color-bg--surface-container),
    var(--color-bg--container)
  );
}