.single-book-page {
  padding: 48px 0 72px;
}

.single-book-section {
  padding: 0;
}

.single-book-grid {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.single-book-image-card,
.single-book-content-card {
  background: #ffffff;
  border: 1px solid var(--color-border-soft);
  border-radius: 20px;
  box-shadow: var(--shadow-soft);
}

.single-book-image-card {
  padding: 20px;
}

.single-book-image-static {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 500px;
  max-height: 500px;
  overflow: hidden;
  border-radius: 14px;
  background: #f7f7f7;
}

.single-book-image-static img {
  width: 100%;
  max-width: 280px;
  max-height: 460px;
  height: auto;
  object-fit: contain;
}

.single-book-content-card {
  padding: 28px;
}

.single-book-content h1 {
  margin: 0 0 10px;
  color: var(--color-primary);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  line-height: 1.2;
}

.single-book-author {
  margin: 0 0 14px;
  color: var(--color-text-soft);
  font-size: 1rem;
}

.single-book-price {
  margin: 0 0 18px;
  color: var(--color-accent);
  font-size: 1.9rem;
  font-weight: 800;
}

.single-book-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.book-details-tabs {
  margin-top: 8px;
}

.book-tab-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.book-tab-btn {
  padding: 10px 16px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: #ffffff;
  color: var(--color-primary);
  font-weight: 700;
  cursor: pointer;
}

.book-tab-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
}

.book-tab-panel {
  display: none;
}

.book-tab-panel.active {
  display: block;
}

.single-book-description {
  color: #3a3f45;
  line-height: 1.7;
}

.book-description.is-collapsed {
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.book-description.is-expanded {
  display: block;
}

.read-more-link {
  display: inline-block;
  margin-top: 12px;
  color: var(--color-accent);
  font-weight: 700;
  text-decoration: none;
}

.read-more-link:hover {
  text-decoration: underline;
}

.product-info-list {
  display: grid;
  gap: 10px;
}

.product-info-list p {
  margin: 0;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border-soft);
  color: #3a3f45;
}

.product-info-list strong {
  color: var(--color-primary);
}

.read-preview-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border: 1px solid var(--color-primary);
  border-radius: 12px;
  color: var(--color-primary);
  font-weight: 700;
}

.read-preview-link:hover {
  background: var(--color-primary);
  color: #ffffff;
}

.related-books {
  margin-top: 48px;
}

@media (max-width: 900px) {
  .single-book-grid {
    grid-template-columns: 1fr;
  }

  .single-book-image-static {
    min-height: 380px;
    max-height: 380px;
  }

  .single-book-image-static img {
    max-height: 340px;
  }
}

@media (max-width: 480px) {
  .single-book-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .read-preview-link,
  .add-cart-btn,
  .btn {
    width: 100%;
  }
}