/* =====================================================
 * format.css - 图片格式转换工具（纯前端本地处理）专用样式
 * ===================================================== */

.format-options-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
}

.format-options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    align-items: flex-end;
}

.format-control-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.format-control-group label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    font-weight: 600;
    color: #334155;
    margin-bottom: 0;
}

.format-control-group label .val-badge {
    font-size: 12px;
    padding: 2px 8px;
    background: #e0e7ff;
    color: #4338ca;
    border-radius: 10px;
    font-weight: 700;
}

.format-select, .format-input {
    height: 38px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    padding: 0 12px;
    font-size: 13px;
    color: #1e293b;
    background-color: #ffffff;
    transition: all 0.2s ease;
    width: 100%;
}

.format-select:focus, .format-input:focus {
    border-color: #6366f1;
    outline: none;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

/* 颜色选择器组合 */
.bg-fill-wrap {
    display: flex;
    gap: 8px;
    align-items: center;
}

.bg-preset-btn {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid #cbd5e1;
    cursor: pointer;
    transition: transform 0.15s, border-color 0.15s;
    position: relative;
    padding: 0;
    background-clip: padding-box;
}

.bg-preset-btn:hover {
    transform: scale(1.1);
}

.bg-preset-btn.active {
    border-color: #4f46e5;
    box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.3);
}

.bg-preset-btn.bg-white { background-color: #ffffff; }
.bg-preset-btn.bg-black { background-color: #000000; }
.bg-preset-btn.bg-transparent {
    background-image: linear-gradient(45deg, #ccc 25%, transparent 25%), linear-gradient(-45deg, #ccc 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #ccc 75%), linear-gradient(-45deg, transparent 75%, #ccc 75%);
    background-size: 8px 8px;
    background-position: 0 0, 0 4px, 4px -4px, -4px 0px;
}

.bg-color-picker {
    width: 38px;
    height: 38px;
    padding: 2px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    cursor: pointer;
    background: #fff;
}

/* 拖拽上传区增强 (对齐图片压缩工具样式) */
.upload-area {
    position: relative;
    border: 2px dashed #a5b4fc;
    border-radius: 14px;
    padding: 32px 20px;
    text-align: center;
    background: #f8fafc;
    transition: all 0.25s ease;
    cursor: pointer;
    margin: 10px 0 18px;
}

.upload-area:hover, .upload-area.dragover {
    border-color: #4f46e5;
    background: #eef2ff;
}

.upload-area .upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.upload-area .upload-content i.fa-cloud-upload {
    color: #4f46e5;
    margin-bottom: 10px;
}

.upload-area h4 {
    font-size: 16px;
    font-weight: 700;
    color: #1e293b;
    margin-top: 4px;
    margin-bottom: 6px;
}

.upload-area p {
    font-size: 13px;
    color: #64748b;
    margin-bottom: 0;
}

.upload-hint-tags {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 12px;
    flex-wrap: wrap;
}

.upload-hint-tags .tag {
    font-size: 11px;
    padding: 2px 8px;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    color: #475569;
}

/* 批量操作栏 */
.format-batch-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 12px 16px;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 12px;
}

.batch-info {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    color: #334155;
}

.batch-info .badge-count {
    background: #4f46e5;
    color: #fff;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 700;
}

.batch-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

/* 视图模式支持 Grid/List */
.format-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.format-card-item {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.format-card-item:hover {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
    border-color: #cbd5e1;
}

.format-card-preview-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    background: #f8fafc;
    border-radius: 8px;
    padding: 8px;
}

.thumb-box {
    width: 90px;
    height: 90px;
    border-radius: 6px;
    overflow: hidden;
    background-image: linear-gradient(45deg, #eee 25%, transparent 25%), linear-gradient(-45deg, #eee 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #eee 75%), linear-gradient(-45deg, transparent 75%, #eee 75%);
    background-size: 10px 10px;
    background-position: 0 0, 0 5px, 5px -5px, -5px 0px;
    border: 1px solid #cbd5e1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.thumb-box img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.thumb-box .thumb-label {
    position: absolute;
    bottom: 2px;
    left: 2px;
    background: rgba(15, 23, 42, 0.75);
    color: #ffffff;
    font-size: 9px;
    padding: 1px 4px;
    border-radius: 3px;
}

.convert-arrow {
    color: #4f46e5;
    font-size: 16px;
}

.format-card-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 12px;
}

.format-card-name {
    font-weight: 700;
    color: #1e293b;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.format-card-meta {
    display: flex;
    justify-content: space-between;
    color: #64748b;
}

.size-tag {
    display: inline-block;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
}

.size-tag.smaller {
    background: #dcfce7;
    color: #166534;
}

.size-tag.larger {
    background: #fee2e2;
    color: #991b1b;
}

.size-tag.same {
    background: #f1f5f9;
    color: #475569;
}

.format-card-actions {
    display: flex;
    gap: 6px;
    margin-top: 4px;
}

.format-card-actions .btn {
    flex: 1;
    font-size: 12px;
    padding: 5px 8px;
}

/* 列表模式 */
.format-list-mode {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.format-list-mode .format-card-item {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
}

.format-list-mode .format-card-preview-row {
    background: transparent;
    padding: 0;
}

.format-list-mode .thumb-box {
    width: 48px;
    height: 48px;
}

.format-list-mode .format-card-info {
    flex: 1;
    margin: 0 16px;
}

/* 对比指南表格大卡片 */
.format-guide-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 24px;
    margin-top: 30px;
}

.format-guide-card h2 {
    font-size: 20px;
    font-weight: 800;
    color: #0f172a;
    margin-bottom: 8px;
}

.format-guide-card p.subtitle {
    color: #64748b;
    font-size: 14px;
    margin-bottom: 20px;
}

.table-responsive-custom {
    overflow-x: auto;
}

.format-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 13px;
}

.format-table th {
    background: #f8fafc;
    color: #334155;
    font-weight: 700;
    padding: 12px 14px;
    border-bottom: 2px solid #e2e8f0;
    text-align: left;
}

.format-table td {
    padding: 12px 14px;
    border-bottom: 1px solid #f1f5f9;
    color: #475569;
    vertical-align: middle;
}

.format-table tr:hover td {
    background: #f8fafc;
}

.format-badge {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 6px;
    font-weight: 700;
    font-size: 11px;
}

.format-badge.jpg  { background: #eff6ff; color: #1d4ed8; }
.format-badge.png  { background: #ecfdf5; color: #047857; }
.format-badge.webp { background: #f5f3ff; color: #6d28d9; }
.format-badge.avif { background: #fff7ed; color: #c2410c; }
.format-badge.bmp  { background: #fdf2f8; color: #be185d; }
.format-badge.gif  { background: #fefce8; color: #a16207; }
.format-badge.ico  { background: #f1f5f9; color: #334155; }

/* 核心优势网格 */
.format-advantage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-top: 20px;
}

.format-advantage-card {
    background: #ffffff;
    border: 1px solid #edf2f7;
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.format-advantage-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.format-adv-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #ffffff;
}

.adv-purple { background: linear-gradient(135deg, #818cf8, #4f46e5); }
.adv-emerald { background: linear-gradient(135deg, #34d399, #059669); }
.adv-amber  { background: linear-gradient(135deg, #fbbf24, #d97706); }
.adv-rose   { background: linear-gradient(135deg, #f43f5e, #e11d48); }

.format-advantage-card h4 {
    font-size: 15px;
    font-weight: 700;
    color: #1e293b;
    margin: 0;
}

.format-advantage-card p {
    font-size: 13px;
    color: #64748b;
    margin: 0;
    line-height: 1.5;
}

/* 模态框 side-by-side 对比 */
.modal-preview-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 768px) {
    .modal-preview-box {
        grid-template-columns: 1fr;
    }
}

.modal-img-container {
    background: #f8fafc;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    padding: 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.modal-img-container img {
    max-width: 100%;
    max-height: 350px;
    object-fit: contain;
}

.modal-img-meta {
    font-size: 12px;
    color: #475569;
    width: 100%;
    display: flex;
    justify-content: space-between;
    border-top: 1px solid #e2e8f0;
    padding-top: 6px;
}