/* 管理后台专用样式 */

/* 管理后台头部 */
.admin-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 20px 0;
    box-shadow: var(--shadow);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.header-left h1 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 5px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-subtitle {
    font-size: 0.9rem;
    opacity: 0.9;
}

.back-btn {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.3);
    font-size: 0.9rem;
}

.back-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    color: var(--white);
}

/* 主要内容区域 */
.admin-main {
    padding: 30px 0;
    background: var(--bg-color);
    min-height: calc(100vh - 80px);
}

/* 统计卡片区域 */
.stats-section {
    margin-bottom: 30px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.stat-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 20px;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.stat-info h3 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 5px;
    line-height: 1;
}

.stat-info p {
    color: var(--light-text);
    font-size: 0.9rem;
    margin: 0;
}

/* 工具栏区域 */
.toolbar-section {
    margin-bottom: 30px;
}

.toolbar {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.toolbar-left,
.toolbar-right {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-box i {
    position: absolute;
    left: 15px;
    color: var(--light-text);
    z-index: 1;
}

.search-box input {
    width: 300px;
    padding: 12px 15px 12px 45px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.9rem;
    transition: var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.toolbar-btn {
    padding: 12px 20px;
    border: none;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 100px;
    justify-content: center;
}

.toolbar-btn {
    background: var(--border-color);
    color: var(--text-color);
}

.toolbar-btn:hover {
    background: #cbd5e0;
}

.toolbar-btn.primary {
    background: var(--primary-color);
    color: var(--white);
}

.toolbar-btn.primary:hover {
    background: var(--secondary-color);
}

.toolbar-btn.success {
    background: #38a169;
    color: var(--white);
}

.toolbar-btn.success:hover {
    background: #2f855a;
}

/* 表格区域 */
.table-section {
    margin-bottom: 30px;
}

.table-container {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.table-header {
    background: #f7fafc;
    padding: 20px 25px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.table-header h2 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0;
}

.table-info {
    color: var(--light-text);
    font-size: 0.9rem;
}

/* 加载状态 */
.loading-state {
    padding: 60px 20px;
    text-align: center;
    color: var(--light-text);
}

.loading-state i {
    font-size: 2rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.loading-state p {
    font-size: 1rem;
    margin: 0;
}

/* 表格样式 */
.table-wrapper {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.data-table th {
    background: #f7fafc;
    padding: 15px 12px;
    text-align: left;
    font-weight: 600;
    color: var(--text-color);
    border-bottom: 2px solid var(--border-color);
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
    position: relative;
}

.data-table th:hover {
    background: #edf2f7;
}

.data-table th i {
    margin-left: 5px;
    font-size: 0.8rem;
    color: var(--light-text);
}

.data-table td {
    padding: 15px 12px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color);
}

.data-table tr:hover {
    background: #f7fafc;
}

.question-preview {
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--light-text);
}

.question-preview.empty {
    font-style: italic;
    color: #a0aec0;
}

/* 操作按钮 */
.action-buttons {
    display: flex;
    gap: 5px;
}

.action-btn {
    padding: 6px 10px;
    border: none;
    border-radius: 4px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 5px;
}

.action-btn.view {
    background: #4299e1;
    color: var(--white);
}

.action-btn.view:hover {
    background: #3182ce;
}

.action-btn.delete {
    background: #f56565;
    color: var(--white);
}

.action-btn.delete:hover {
    background: #e53e3e;
}

/* 空状态 */
.empty-state {
    padding: 60px 20px;
    text-align: center;
    color: var(--light-text);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 20px;
    color: #a0aec0;
}

.empty-state h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-color);
}

.empty-state p {
    font-size: 0.9rem;
    margin: 0;
}

/* 分页控制 */
.pagination-section {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 20px 25px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.pagination-info {
    color: var(--light-text);
    font-size: 0.9rem;
}

.pagination-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

.page-btn {
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    background: var(--white);
    color: var(--text-color);
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
}

.page-btn:hover:not(:disabled) {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

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

.page-numbers {
    display: flex;
    gap: 5px;
}

.page-number {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    background: var(--white);
    color: var(--text-color);
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    min-width: 40px;
    text-align: center;
}

.page-number:hover {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.page-number.active {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

/* 模态框扩展样式 */
.modal-content.large {
    max-width: 700px;
    width: 95%;
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.detail-item.full-width {
    grid-column: 1 / -1;
}

.detail-item label {
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.9rem;
}

.detail-item span {
    color: var(--light-text);
    padding: 8px 0;
}

.question-content {
    background: #f7fafc;
    padding: 15px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    white-space: pre-wrap;
    line-height: 1.6;
    color: var(--text-color);
    min-height: 60px;
}

.question-content:empty::before {
    content: "用户未填写问题";
    color: #a0aec0;
    font-style: italic;
}

.close-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--light-text);
    cursor: pointer;
    padding: 5px;
    border-radius: 4px;
    transition: var(--transition);
}

.close-btn:hover {
    color: var(--text-color);
    background: var(--border-color);
}

.warning-icon {
    font-size: 2.5rem;
    color: #f56565;
    margin-bottom: 15px;
}

.delete-info {
    background: #fed7d7;
    padding: 15px;
    border-radius: 6px;
    margin-top: 15px;
    border-left: 4px solid #f56565;
}

.modal-btn.danger {
    background: #f56565;
    color: var(--white);
}

.modal-btn.danger:hover {
    background: #e53e3e;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .search-box input {
        width: 250px;
    }
    
    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .toolbar-left,
    .toolbar-right {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .search-box input {
        width: 100%;
    }
    
    .toolbar-left,
    .toolbar-right {
        width: 100%;
        flex-wrap: wrap;
    }
    
    .pagination-section {
        flex-direction: column;
        gap: 15px;
    }
    
    .pagination-controls {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .data-table {
        font-size: 0.8rem;
    }
    
    .data-table th,
    .data-table td {
        padding: 10px 8px;
    }
}

@media (max-width: 480px) {
    .admin-main {
        padding: 20px 0;
    }
    
    .table-header {
        padding: 15px;
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .action-buttons {
        flex-direction: column;
        gap: 3px;
    }
    
    .action-btn {
        font-size: 0.7rem;
        padding: 4px 8px;
    }
}