/* frontend/product.css */
.product-detail-container {
  max-width: 1200px;
  margin: 2rem auto;
  padding: 0 1rem;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

/* === Carrusel de imágenes === */
.product-image-section {
  position: relative;
}

.product-main-image {
  width: 100%;
  height: 500px;
  object-fit: cover;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  background: #f8f9fa;
  border: 1px solid #eee;
}

.product-thumbnails {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
  overflow-x: auto;
  padding: 0.5rem 0;
  scrollbar-width: thin;
  -ms-overflow-style: none;
}

.product-thumbnails::-webkit-scrollbar {
  display: none;
}

.product-thumbnails img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: 8px;
  cursor: pointer;
  border: 3px solid transparent;
  transition: border-color 0.2s ease, transform 0.2s ease;
  flex-shrink: 0;
}

.product-thumbnails img:hover {
  transform: scale(1.05);
}

.product-thumbnails img.active {
  border-color: #3498db;
}

/* === Información del producto === */
.product-info h1 {
  font-size: 2.2rem;
  font-weight: 700;
  color: #2c3e50;
  margin: 0 0 0.5rem 0;
  line-height: 1.2;
}

.product-category {
  font-size: 0.95rem;
  color: #3498db;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.product-category a {
  color: #3498db;
  text-decoration: none;
  border-bottom: 1px solid #3498db;
  padding-bottom: 1px;
}

.product-category a:hover {
  color: #2980b9;
}

.product-price {
  font-size: 1.8rem;
  font-weight: bold;
  color: #e74c3c;
  margin: 0.5rem 0;
}

.product-stock {
  font-size: 0.95rem;
  margin: 1rem 0;
  padding: 0.5rem 1rem;
  background: #f8f9fa;
  border-radius: 8px;
  border-left: 4px solid #27ae60;
}

.product-stock.low {
  border-left-color: #f39c12;
}

.product-stock.out {
  border-left-color: #e74c3c;
}

.product-description {
  margin: 1.5rem 0;
  color: #555;
  line-height: 1.6;
}

.product-description h3 {
  font-size: 1.2rem;
  color: #2c3e50;
  margin: 1rem 0 0.8rem 0;
  font-weight: 600;
}

/* === Botón de acción === */
.product-actions {
  margin-top: 2rem;
}

.product-actions .btn {
  display: block;
  width: 100%;
  padding: 1rem;
  font-size: 1.1rem;
  font-weight: 600;
  text-align: center;
  background: #3498db;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.3s ease;
  box-shadow: 0 4px 6px rgba(52, 152, 219, 0.2);
}

.product-actions .btn:hover {
  background: #2980b9;
  transform: translateY(-1px);
}

.product-actions .btn:disabled {
  background: #95a5a6;
  cursor: not-allowed;
  transform: none;
}

/* Responsive */
@media (max-width: 768px) {
  .product-detail-grid {
    grid-template-columns: 1fr;
  }

  .product-main-image {
    height: 350px;
  }

  .product-info h1 {
    font-size: 1.6rem;
  }

  .product-price {
    font-size: 1.4rem;
  }
}