/*
   ============================================================
   PRODUCT DETAIL PAGE — theme-aligned styles
   ============================================================
*/

    /* ---------- 01. PAGE WRAPPER ---------- */.product-detail-page {
      padding: 30px 0 70px;
    }
    .product-container {
      width: min(1200px, 92%);
      margin-inline: auto;
    }

    /* ---------- 02. BREADCRUMBS ---------- */
    .product-breadcrumbs {
      margin-bottom: 18px;
    }
    .product-breadcrumbs ol {
      display: flex;
      flex-wrap: wrap;
      list-style: none;
      gap: 8px;
      font-size: 0.85rem;
      margin: 0;
      padding: 0;
      color: var(--muted);
    }
    .product-breadcrumbs li {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .product-breadcrumbs li:not(:last-child)::after {
      content: '/';
      color: var(--border);
      font-weight: 700;
    }
    .product-breadcrumbs a {
      color: var(--muted);
      text-decoration: none;
      transition: color 0.2s;
    }
    .product-breadcrumbs a:hover {
      color: var(--primary);
    }
    .product-breadcrumbs li[aria-current="page"] {
      color: var(--text);
      font-weight: 500;
    }
    @media (max-width: 600px) {
      .product-breadcrumbs ol {
        font-size: 0.78rem;
        gap: 6px;
      }
    }

    /* ---------- 03. MAIN GRID ---------- */
    .product-main-grid {
      display: grid;
      grid-template-columns: 1fr;
      gap: 32px;
      margin-bottom: 40px;
    }
    @media (min-width: 768px) {
      .product-main-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    /* ---------- 04. GALLERY ---------- */
    .product-gallery {
      position: sticky;
      top: calc(var(--header-h) + 14px);
      height: fit-content;
    }
    @media (max-width: 768px) {
      .product-gallery {
        position: relative;
        top: 0;
      }
    }

    .gallery-main {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      aspect-ratio: 1 / 1;
      margin-bottom: 14px;
      box-shadow: var(--shadow);
    }
    .gallery-main-image {
      width: 100%;
      height: 100%;
      object-fit: contain;
      display: block;
    }
    .gallery-placeholder {
      width: 100%;
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: center;
      background: var(--primary-soft);
      color: var(--muted);
      font-size: 3rem;
    }
    .gallery-thumbnails {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(72px, 1fr));
      gap: 10px;
    }
    .gallery-thumb-item {
      aspect-ratio: 1 / 1;
      border: 2px solid var(--border);
      border-radius: 10px;
      cursor: pointer;
      overflow: hidden;
      transition: all 0.2s;
      background: var(--surface);
    }
    .gallery-thumb-item.active,
    .gallery-thumb-item:hover {
      border-color: var(--secondary);
    }
    .gallery-thumb-item img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }

    /* ---------- 05. PRODUCT INFO ---------- */
    .product-info {
      display: flex;
      flex-direction: column;
      gap: 16px;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow);
    }
    @media (max-width: 600px) {
      .product-info {
        padding: 18px;
        gap: 14px;
      }
    }

    /* seller */
    .product-seller {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.82rem;
      color: var(--muted);
    }
    .product-seller > a {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      text-decoration: none;
      background: var(--primary-soft);
      color: var(--primary);
      padding: 5px 12px;
      border-radius: 40px;
      font-weight: 500;
      font-size: 0.8rem;
      transition: background 0.2s;
    }
    .product-seller > a:hover {
      background: var(--secondary-light);
      color: var(--primary-dark);
    }
    .product-seller > a > img {
      max-height: 22px;
      width: auto;
    }

    /* category */
    .product-category a {
      display: inline-block;
      font-size: 0.7rem;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--muted);
      font-weight: 500;
      text-decoration: none;
      transition: color 0.2s;
    }
    .product-category a:hover {
      color: var(--primary);
    }

    /* title */
    .product-title {
      font-family: var(--font-head);
      font-size: clamp(1.6rem, 3.2vw, 2.2rem);
      font-weight: 600;
      letter-spacing: -0.01em;
      line-height: 1.15;
      color: var(--primary);
      margin: 0;
    }

    /* rating */
    .product-rating {
      display: flex;
      align-items: center;
      gap: 8px;
      flex-wrap: wrap;
      font-size: 0.85rem;
    }
    .stars {
      display: flex;
      gap: 2px;
    }
    .star {
      width: 16px;
      height: 16px;
    }
    .star-full,
    .star-half {
      color: var(--secondary);
    }
    .star-empty {
      color: var(--border);
    }
    .rating-value {
      font-weight: 500;
      color: var(--text);
    }
    .reviews-count {
      color: var(--muted);
      font-size: 0.78rem;
    }

    /* pricing */
    .product-pricing-detail {
      padding: 14px 0;
      border-top: 1px solid var(--border);
      border-bottom: 1px solid var(--border);
    }
    .price-wrapper {
      display: flex;
      align-items: baseline;
      gap: 10px;
      flex-wrap: wrap;
    }
    .price-original {
      font-size: 0.95rem;
      color: var(--muted);
      text-decoration: line-through;
    }
    .price-current {
      font-family: var(--font-head);
      font-size: 1.9rem;
      font-weight: 600;
      color: var(--primary);
      letter-spacing: -0.01em;
    }
    .price-discount {
      background: var(--secondary);
      color: #fff;
      padding: 3px 10px;
      font-size: 0.72rem;
      font-weight: 500;
      border-radius: 30px;
    }
    .price-note {
      font-size: 0.75rem;
      color: var(--muted);
      margin-top: 6px;
    }

    /* features */
    .product-features {
      padding: 4px 0;
    }
    .features-title {
      font-size: 0.82rem;
      font-weight: 500;
      letter-spacing: 0.04em;
      text-transform: uppercase;
      color: var(--text);
      margin-bottom: 8px;
    }
    .features-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-direction: column;
      gap: 4px;
    }
    .features-list li {
      padding-left: 22px;
      position: relative;
      font-size: 0.86rem;
      color: var(--muted);
      line-height: 1.5;
    }
    .features-list li::before {
      content: '✓';
      position: absolute;
      left: 0;
      color: var(--secondary);
      font-weight: 900;
    }

    /* variants */
    .product-variants {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .variant-group {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .variant-label {
      font-size: 0.78rem;
      font-weight: 500;
      letter-spacing: 0.03em;
      text-transform: uppercase;
      color: var(--text);
    }
    .variant-options {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .variant-btn {
      display: inline-block;
      padding: 8px 16px;
      border: 1.5px solid var(--border);
      background: var(--surface);
      color: var(--text);
      text-decoration: none;
      font-size: 0.82rem;
      font-weight: 500;
      border-radius: 40px;
      transition: all 0.2s;
    }
    .variant-btn:hover {
      border-color: var(--secondary);
      color: var(--primary);
    }
    .variant-btn.active {
      background: var(--primary);
      border-color: var(--primary);
      color: #fff;
    }

    /* actions */
    .product-actions {
      display: flex;
      gap: 12px;
      margin-top: 6px;
    }
    .action-btn {
      flex: 1;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 14px 20px;
      font: inherit;
      font-size: 0.88rem;
      font-weight: 500;
      border-radius: 50px;
      cursor: pointer;
      transition: all 0.25s;
      border: none;
      letter-spacing: 0.03em;
    }
    .btn-add-cart {
      background: var(--primary-soft);
      border: 1.5px solid var(--primary);
      color: var(--primary);
    }
    .btn-add-cart:hover {
      background: var(--primary);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: var(--shadow);
    }
    .btn-buy-now {
      background: var(--primary);
      color: #fff;
      box-shadow: var(--shadow);
    }
    .btn-buy-now:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 14px 34px rgba(110, 22, 49, 0.28);
    }
    .btn-buy-now:disabled {
      opacity: .5;
      cursor: not-allowed;
      transform: none;
    }

    @media (max-width: 600px) {
      .product-actions {
        flex-direction: column;
      }
      .price-current {
        font-size: 1.6rem;
      }
    }

    /* ---------- 06. DESCRIPTION TABS ---------- */
    .product-description-section {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      padding: 24px;
      margin-top: 32px;
    }
    .description-tabs {
      display: flex;
      gap: 24px;
      border-bottom: 1px solid var(--border);
      margin-bottom: 20px;
      overflow-x: auto;
    }
    .tab-btn {
      background: none;
      border: none;
      padding: 10px 0;
      font: inherit;
      font-size: 0.88rem;
      font-weight: 500;
      letter-spacing: 0.04em;
      text-transform: uppercase;
      color: var(--muted);
      cursor: pointer;
      transition: color 0.2s;
      position: relative;
      white-space: nowrap;
    }
    .tab-btn.active {
      color: var(--primary);
    }
    .tab-btn.active::after {
      content: '';
      position: absolute;
      bottom: -1px;
      left: 0;
      right: 0;
      height: 3px;
      background: var(--secondary);
      border-radius: 3px 3px 0 0;
    }
    .tab-content {
      display: none;
      padding: 4px 0;
    }
    .tab-content.active {
      display: block;
      animation: fadeIn 0.3s ease;
    }
    @keyframes fadeIn {
      from {
        opacity: 0;
        transform: translateY(6px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    .product-description {
      font-size: 0.92rem;
      line-height: 1.7;
      color: var(--muted);
    }
    .product-description p {
      margin-bottom: 12px;
    }

    .product-details-table table {
      width: 100%;
      border-collapse: collapse;
    }
    .product-details-table tr {
      border-bottom: 1px solid var(--border);
    }
    .product-details-table th,
    .product-details-table td {
      padding: 10px 12px;
      text-align: left;
      font-size: 0.88rem;
    }
    .product-details-table th {
      font-weight: 500;
      color: var(--text);
      width: 30%;
    }
    .product-details-table td {
      color: var(--muted);
    }

    @media (max-width: 600px) {
      .product-description-section {
        padding: 18px;
        margin-top: 24px;
      }
      .description-tabs {
        gap: 16px;
      }
      .tab-btn {
        font-size: 0.8rem;
      }
    }

    /* ---------- 07. RELATED PRODUCTS ---------- */
    .related-products-section {
      margin-top: 40px;
    }
    .related-title {
      font-family: var(--font-head);
      font-size: 1.6rem;
      font-weight: 600;
      letter-spacing: -0.01em;
      text-align: left;
      margin-bottom: 20px;
      color: var(--primary);
      padding-left: 14px;
      position: relative;
    }
    .related-title::before {
      content: "";
      position: absolute;
      left: 0;
      top: 12%;
      height: 76%;
      width: 4px;
      border-radius: 4px;
      background: var(--secondary);
    }
    .related-products-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 24px;
    }
    @media (max-width: 1150px) {
      .related-products-grid {
        grid-template-columns: repeat(4, 1fr);
      }
    }
    @media (max-width: 700px) {
      .related-products-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 14px;
      }
    }