.libros-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
  margin-top: 40px;
}

.libro-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
}

.libro-imagen {
  width: 100%;
  aspect-ratio: 2/3;
  overflow: hidden;
  background: var(--color-bg-alt);
}

.libro-imagen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.libro-card:hover .libro-imagen img {
  transform: scale(1.05);
}

.libro-info {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.libro-info h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: var(--color-primary);
  line-height: 1.3;
}

.libro-fecha {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.libro-desc {
  font-size: 0.95rem;
  color: var(--color-text-light);
  line-height: 1.7;
  flex: 1;
}

.libro-info .btn {
  align-self: flex-start;
  margin-top: 8px;
}

@media (max-width: 700px) {
  .libros-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}