.custom-gallery-container {
    max-width: 100%;
    margin: 0 auto;
}

.gallery-main-image {
    text-align: center;
    /* margin-bottom: 20px; */
    height: 468px;
    overflow: hidden;
}

@media (max-width: 560px) {
    .gallery-main-image {
        text-align: center;
        /* margin-bottom: 20px; */
        height: 250px;
        overflow: hidden;
        object-fit: contain;
    }
}

.gallery-main-image img {
    max-width: 100%;
    height: 100%;
    object-fit: contain;
}

/* product_detailにはスタイルを指定しません */

.gallery-thumbnails {
    display: grid;
    gap: 3px;
}

/* 列数の動的設定 */
.gallery-thumbnails[data-columns="2"] { grid-template-columns: repeat(2, 1fr); }
.gallery-thumbnails[data-columns="3"] { grid-template-columns: repeat(3, 1fr); }
.gallery-thumbnails[data-columns="4"] { grid-template-columns: repeat(4, 1fr); }
.gallery-thumbnails[data-columns="6"] { grid-template-columns: repeat(6, 1fr); }
.gallery-thumbnails[data-columns="8"] { grid-template-columns: repeat(8, 1fr); }

/* 行数の動的設定 */
.gallery-thumbnails[data-rows="1"] { grid-template-rows: repeat(1, 1fr); }
.gallery-thumbnails[data-rows="2"] { grid-template-rows: repeat(2, 1fr); }
.gallery-thumbnails[data-rows="3"] { grid-template-rows: repeat(3, 1fr); }
.gallery-thumbnails[data-rows="4"] { grid-template-rows: repeat(4, 1fr); }

.gallery-thumb {
    aspect-ratio: 1.6;
    cursor: pointer;
    border: 2px solid transparent;
    overflow: hidden;
    position: relative;
    border-radius: 5px;
}

.gallery-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 0;
}

.gallery-thumb.active {
    border-color: #0073aa;
}

.gallery-thumb.no-image {
    background-color: #f0f0f0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    font-size: 14px;
    background-image: url("../images/image-spacer-512px.png");
    background-size: contain;
    background-position: center center;
    background-repeat: no-repeat;
    border-radius: 5px;
}

/* スマートフォン向けのスタイル */
@media screen and (max-width: 560px) {
    .gallery-thumbnails {
        grid-template-columns: repeat(4, 1fr) !important;
    }
    
    /* スマホ表示行数の動的設定 */
    .gallery-thumbnails[data-mobile-rows="1"] { grid-template-rows: repeat(1, 1fr) !important; }
    .gallery-thumbnails[data-mobile-rows="2"] { grid-template-rows: repeat(2, 1fr) !important; }
    .gallery-thumbnails[data-mobile-rows="3"] { grid-template-rows: repeat(3, 1fr) !important; }
    .gallery-thumbnails[data-mobile-rows="4"] { grid-template-rows: repeat(4, 1fr) !important; }
}