/* Tarjeta de producto individual */
    .product-card {
      background: #fff;
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 4px 18px rgba(13,20,204,.08);
      transition: transform .3s ease, box-shadow .3s ease;
      height: 100%;
      display: flex;
      flex-direction: column;
    }
    .product-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 12px 32px rgba(13,20,204,.15);
    }
    /* Contenedor de imagen cuadrado */
    .product-card-img {
      width: 100%;
      aspect-ratio: 1 / 1;
      overflow: hidden;
      background: #f5f6fa;
    }
    .product-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .4s ease;
    }
    .product-card:hover .product-card-img img { transform: scale(1.06); }
    /* Cuerpo de la tarjeta */
    .product-card-body {
      padding: 20px 22px 24px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }
    .product-card-name {
      font-family: var(--font-heading);
      font-size: 1rem;
      font-weight: 700;
      color: var(--color-primary);
      margin-bottom: 8px;
    }
    .product-card-desc {
      font-size: .9rem;
      color: #555;
      flex: 1;
      margin-bottom: 14px;
      line-height: 1.5;
    }
    /* Etiqueta de presentaciones disponibles */
    .product-card-sizes {
      display: flex;
      flex-wrap: wrap;
      gap: 6px;
      margin-bottom: 16px;
    }
    .product-card-sizes-label {
      font-family: var(--font-heading);
      font-size: .72rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: .4px;
      color: #888;
      width: 100%;
      margin-bottom: 4px;
    }
    .size-tag {
      padding: 4px 14px;
      border: 2px solid var(--color-primary);
      border-radius: 20px;
      font-family: var(--font-heading);
      font-size: .78rem;
      font-weight: 700;
      color: var(--color-primary);
      background: transparent;
      cursor: pointer;
      transition: background .25s ease, color .25s ease;
    }
    .size-tag:hover,
    .size-tag.active {
      background: var(--color-primary);
      color: #fff;
    }
    /* Aviso sutil cuando ningún tamaño está seleccionado al dar clic en cotizar */
    .size-required-hint {
      font-size: .78rem;
      color: var(--color-accent);
      display: none;
      margin-top: -10px;
      margin-bottom: 10px;
    }
    .size-required-hint.visible { display: block; }