/* Catalog styles */
.catalog-hero {
  padding: 2rem 1rem;
  text-align: center;
}
.carousel-section {
  padding: 2rem 1rem;
  background: #fff;
}
.carousel {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  overflow: hidden;
}
.carousel-track {
  display: flex;
  gap: 1rem;
  transition: transform 0.4s ease;
  padding: 1rem;
  will-change: transform;
}
.book-card {
  width: 200px;
  flex: 0 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid rgba(2,44,67,0.12);
  border-radius: 8px;
  padding: 8px;
}
.book-card picture,
.book-card img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1.4; /* relación A: 1:1.4 */
  object-fit: cover;
  border-radius: 6px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.08);
}
/* Placeholder cover for libros en proceso */
.book-card .placeholder {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1.4;
  border-radius: 6px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.08);
  background: linear-gradient(135deg,#F4F7FA,#E9EEF3);
  position: relative;
}
.book-card .placeholder .watermark{
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%,-50%) rotate(-18deg);
  color: #022C43;
  opacity: .12;
  font-weight: 800;
  letter-spacing: .05em;
  font-size: 1.1rem;
  text-transform: uppercase;
}
.book-title {
  margin: 0.6rem 0 0.25rem;
  font-size: 1rem;
  color: #022C43;
  line-height: 1.2;
  /* Reserva espacio para hasta 3 líneas para nivelar fichas */
  min-height: calc(1.2em * 3);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.book-sub {
  margin: 0;
  font-size: 0.9rem;
  color: #566574;
}
.book-card .view-btn,
.book-card .btn {
  margin-top: auto; /* empuja el botón al fondo del card */
}
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(2,44,67,0.85);
  color: white;
  border: none;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  cursor: pointer;
}
.carousel-btn.prev { left: 8px; }
.carousel-btn.next { right: 8px; }

/* Grid completo */
.catalog-grid .grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px,1fr));
  gap: 1.25rem;
  padding: 1rem 0 3rem;
}
@media (max-width: 600px) {
  .book-card { width: 46vw; }
}