/* DM 縮圖排列樣式 */

/* 縮圖網格佈局 */
.dm-thumbnail-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    padding: 15px 0;
}

/* 縮圖項目 */
.dm-thumbnail-item {
    position: relative;
    background: #f8f9fa;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.dm-thumbnail-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.15);
}

/* 縮圖連結 */
.dm-thumbnail-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

/* 圖片容器 - 維持 3:4 比例（適合 A4 DM） */
.dm-thumbnail-image-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 133.33%; /* 4:3 比例的反轉 = 3:4 */
    background: #f0f0f0;
    overflow: hidden;
}

/* 圖片樣式 */
.dm-thumbnail-image-wrapper img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.dm-thumbnail-item:hover .dm-thumbnail-image-wrapper img {
    transform: scale(1.05);
}

/* 圖片標題 */
.dm-thumbnail-title {
    padding: 10px;
    text-align: center;
    font-size: 14px;
    font-weight: 500;
    background: white;
    color: #333;
}

/* 頁碼標籤 */
.dm-page-number {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(0,0,0,0.7);
    color: white;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: bold;
    z-index: 1;
}

/* 響應式設計 */
@media (max-width: 991px) {
    .dm-thumbnail-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }
    
    .dm-thumbnail-title {
        font-size: 13px;
        padding: 8px;
    }
}

@media (max-width: 767px) {
    .dm-thumbnail-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .dm-thumbnail-image-wrapper {
        padding-bottom: 140%; /* 手機版稍微調整比例 */
    }
}

@media (max-width: 480px) {
    .dm-thumbnail-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    
    .dm-thumbnail-title {
        font-size: 12px;
        padding: 6px;
    }
    
    .dm-page-number {
        font-size: 11px;
        padding: 3px 6px;
    }
}

/* Bootstrap 相容性調整 */
.dm-list {
    width: 100%;
}

.dm-list-item {
    display: inline-block;
    width: 33.333%;
    padding: 8px;
    vertical-align: top;
}

@media (max-width: 767px) {
    .dm-list-item {
        width: 50%;
        padding: 5px;
    }
}

/* 優化 img-responsive 在此場景的表現 */
.dm-list-item .img-responsive {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.dm-list-item span {
    display: block;
    text-align: center;
    margin-top: 8px;
    font-size: 14px;
    color: #333;
}

/* 清除浮動 */
.clearfix::after {
    content: "";
    display: table;
    clear: both;
}