/* ================= PRODUCT PAGE ================= */
  .product-page {
    background: #f8f9fa;
  }

  .product-gallery img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: 12px;
  }

  .thumbnail-row img {
    height: 100px;
    object-fit: cover;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 8px;
  }

  .thumbnail-row img:hover,
  .thumbnail-row img.active {
    border-color: #0d6efd;
    transform: scale(1.05);
  }

  .product-title {
    font-size: 2rem;
    font-weight: 700;
  }

  .product-price {
    font-size: 1.8rem;
    font-weight: 700;
    color: #000;
    margin: 1rem 0;
  }

  .size-option {
    margin-right: 10px;
  }

  .size-option input {
    display: none;
  }

  .size-option label {
    padding: 0.6rem 1.2rem;
    border: 2px solid #ddd;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
  }

  .size-option input:checked + label {
    border-color: #0d6efd;
    background: #0d6efd;
    color: #fff;
  }

  .btn-add-cart {
    border-radius: 30px;
    font-weight: 600;
    padding: 0.8rem 2rem;
  }