/* ========================================
   文章管理页面专用样式
   ======================================== */

/* 筛选工具栏 */
.filter-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
}

.filter-left {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.filter-right {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* 搜索框 */
.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-box svg {
    position: absolute;
    left: var(--space-3);
    width: 18px;
    height: 18px;
    color: var(--text-tertiary);
}

.search-box input {
    width: 280px;
    padding: var(--space-2) var(--space-4) var(--space-2) var(--space-10);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px var(--primary-100);
}

.search-box input::placeholder {
    color: var(--text-tertiary);
}

.search-clear {
    position: absolute;
    right: var(--space-2);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--text-tertiary);
    opacity: 0;
    transition: all var(--transition-fast);
}

.search-box input:not(:placeholder-shown) + .search-clear {
    opacity: 1;
}

.search-clear:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.search-clear svg {
    position: static;
    width: 16px;
    height: 16px;
}

/* 筛选器组 */
.filter-group {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.filter-select {
    padding: var(--space-2) var(--space-8) var(--space-2) var(--space-4);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    transition: all var(--transition-fast);
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px var(--primary-100);
}

/* 视图切换 */
.view-toggle {
    display: flex;
    align-items: center;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.view-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    transition: all var(--transition-fast);
}

.view-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.view-btn.active {
    background: var(--primary-50);
    color: var(--primary-600);
}

.view-btn svg {
    width: 18px;
    height: 18px;
}

/* 批量操作栏 */
.batch-toolbar {
    display: none;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    background: var(--primary-50);
    border: 1px solid var(--primary-200);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
}

.batch-toolbar.active {
    display: flex;
}

.batch-info {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.batch-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.batch-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

/* 复选框 */
.checkbox-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    cursor: pointer;
}

.checkbox-wrapper input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.checkbox-wrapper .checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.checkbox-wrapper input:checked + .checkmark {
    background: var(--primary-500);
    border-color: var(--primary-500);
}

.checkbox-wrapper .checkmark::after {
    content: '';
    width: 5px;
    height: 9px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) translate(-1px, -1px);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.checkbox-wrapper input:checked + .checkmark::after {
    opacity: 1;
}

/* 文章容器 */
.articles-container {
    margin-bottom: var(--space-6);
}

.articles-container.hidden {
    display: none;
}

/* 卡片视图 */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: var(--space-5);
}

.article-card-v2 {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
    position: relative;
}

.article-card-v2:hover {
    border-color: var(--primary-300);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.article-card-v2.selected {
    border-color: var(--primary-500);
    background: var(--primary-50);
}

.card-checkbox {
    position: absolute;
    top: var(--space-4);
    left: var(--space-4);
    z-index: 10;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.article-card-v2:hover .card-checkbox,
.article-card-v2.selected .card-checkbox {
    opacity: 1;
}

.card-content {
    padding: var(--space-5);
    padding-left: var(--space-10);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-3);
}

.card-actions-menu {
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.article-card-v2:hover .card-actions-menu {
    opacity: 1;
}

.card-title {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
    line-height: 1.4;
}

.card-summary {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: var(--space-4);
}

.card-meta {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    font-size: 0.8125rem;
    color: var(--text-tertiary);
}

.meta-item svg {
    width: 14px;
    height: 14px;
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-5);
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.card-actions {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

/* 列表视图 */
.articles-table-wrapper {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.articles-table {
    width: 100%;
    border-collapse: collapse;
}

.articles-table th,
.articles-table td {
    padding: var(--space-4) var(--space-5);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.articles-table th {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--bg-secondary);
}

.articles-table tbody tr {
    transition: background var(--transition-fast);
}

.articles-table tbody tr:hover {
    background: var(--bg-secondary);
}

.articles-table tbody tr.selected {
    background: var(--primary-50);
}

.col-checkbox {
    width: 60px;
    text-align: center;
}

.col-title {
    min-width: 300px;
}

.col-type,
.col-date,
.col-words,
.col-status {
    white-space: nowrap;
}

.col-actions {
    width: 160px;
}

.table-title {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.title-text {
    font-weight: 500;
    color: var(--text-primary);
}

.title-summary {
    font-size: 0.8125rem;
    color: var(--text-tertiary);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.table-actions {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.articles-table tbody tr:hover .table-actions {
    opacity: 1;
}

/* 分页 */
.pagination-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) 0;
}

.pagination-info {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.pagination {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.pagination-btn {
    min-width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.pagination-btn:hover:not(:disabled) {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.pagination-btn.active {
    background: var(--primary-600);
    color: white;
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-btn svg {
    width: 16px;
    height: 16px;
}

.pagination-ellipsis {
    color: var(--text-tertiary);
    padding: 0 var(--space-2);
}

/* 空状态 */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-12);
    color: var(--text-tertiary);
    text-align: center;
}

.empty-state svg {
    width: 64px;
    height: 64px;
    margin-bottom: var(--space-4);
    opacity: 0.5;
}

/* 响应式 */
@media (max-width: 1024px) {
    .articles-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
    
    .filter-toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-left {
        flex-direction: column;
    }
    
    .search-box input {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .articles-table-wrapper {
        overflow-x: auto;
    }
    
    .articles-table {
        min-width: 800px;
    }
    
    .card-checkbox {
        opacity: 1;
    }
    
    .card-actions-menu {
        opacity: 1;
    }
    
    .table-actions {
        opacity: 1;
    }
}