:root {
  /* Màu vàng chủ đạo theo yêu cầu */
  --color-primary: rgb(234 205 110 / 90%);
  --color-primary-light: #eae7d6;
  --color-primary-dark: #c9a227;
  --color-accent: #d4a520;
  --color-background: #faf9f7;
  --color-card: #ffffff;
  --color-text: #2c2c2c;
  --color-text-muted: #6b7280;
  --color-border: #e5e7eb;
  --color-muted-bg: #f3f4f6;
  --color-success: #22c55e;
  --color-danger: #ef4444;

  --font-serif: "Playfair Display", Georgia, serif;
  --font-sans: "Inter", system-ui, sans-serif;

  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* Main container */
.product-detail {
  padding: 2rem 0;
  background-color: var(--color-background);
  min-height: 100vh;
}

/* Product detail card */
.product-detail-card {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  background-color: var(--color-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* Product detail grid */
.product-detail-grid {
  display: flex;
  gap: 3rem;
  align-items: flex-start;
  margin-bottom: 3rem;
}

/* Product image */
.product-detail-image {
  flex: 1;
  max-width: 500px;
}

.product-detail-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

/* Product info */
.product-detail-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.product-category {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.product-title {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
  margin: 0;
}

.product-price {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.product-stock {
  font-size: 1rem;
  color: var(--color-success);
  font-weight: 500;
}

.product-description {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-text-muted);
}

/* Product actions */
.product-actions {
  margin-top: 1rem;
}

.btn-add-cart {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: white;
  border: none;
  padding: 1rem 2rem;
  font-size: 1.125rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
}

.btn-add-cart:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary-dark));
}

/* Product reviews */
.product-reviews {
  border-top: 1px solid var(--color-border);
  padding-top: 2rem;
}

.reviews-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 1.5rem;
}

/* Review form */
.review-form {
  background-color: var(--color-muted-bg);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  margin-bottom: 2rem;
}

.review-form label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.review-form select,
.review-form textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  margin-bottom: 1rem;
}

.review-form textarea {
  resize: vertical;
  min-height: 100px;
}

.review-form button {
  background-color: var(--color-primary);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 500;
  transition: background-color 0.3s ease;
}

.review-form button:hover {
  background-color: var(--color-primary-dark);
}

/* Individual reviews */
.review-item {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 1rem;
  margin-bottom: 1rem;
}

.review-item:last-child {
  border-bottom: none;
}

.review-author {
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.review-rating {
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}

.review-content {
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Login link */
.review-login {
  color: var(--color-primary-dark);
  font-weight: 500;
}

.review-login:hover {
  text-decoration: underline;
}

/* Responsive design */
@media (max-width: 768px) {
  .product-detail-grid {
    flex-direction: column;
    gap: 2rem;
  }

  .product-detail-card {
    padding: 1rem;
  }

  .product-title {
    font-size: 2rem;
  }

  .product-price {
    font-size: 1.5rem;
  }
}