/* 深圳大学考勤签到系统 - 管理端样式 */

/* 管理端布局 */
.admin-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background: #f8fafc;
}

/* 顶部导航 */
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--spacing-6);
    height: 64px;
    background: #ffffff;
    border-bottom: 1px solid #e2e8f0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-radius: 0 0 20px 20px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: #e2e8f0;
    border: none;
    cursor: pointer;
    padding: 0;
    border-radius: 16px;
    transition: all 0.3s ease;
}

.mobile-menu-btn:hover {
    background: #cbd5e1;
    transform: scale(1.05);
}

.hamburger-line {
    width: 20px;
    height: 2px;
    background-color: var(--primary-color);
    margin: 2px 0;
    transition: 0.3s;
    border-radius: 1px;
}

.admin-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: #1e293b;
    margin: 0;
}

.admin-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.admin-name {
    font-weight: 600;
    color: var(--gray-700);
    padding: var(--spacing-2) var(--spacing-3);
    background: #e2e8f0;
    border-radius: 24px;
    font-size: var(--font-size-sm);
}

.logout-btn {
    padding: var(--spacing-2) var(--spacing-4);
    background: #dc2626;
    border: none;
    border-radius: 24px;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    box-shadow: 0 4px 15px rgba(220, 38, 38, 0.3);
}

.logout-btn:hover {
    background: #b91c1c;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(220, 38, 38, 0.4);
}

/* 侧边导航 */
.sidebar {
    position: fixed;
    top: 64px;
    left: 0;
    width: 240px;
    height: calc(100vh - 64px);
    background: #ffffff;
    border-right: 1px solid #e2e8f0;
    overflow-y: auto;
    z-index: 999;
    border-radius: 0 20px 0 0;
}

.nav-menu {
    list-style: none;
    padding: var(--spacing-4) 0;
    margin: 0;
}

.nav-item {
    margin: var(--spacing-1) var(--spacing-3);
}

.nav-link {
    display: flex;
    align-items: center;
    padding: var(--spacing-3) var(--spacing-4);
    color: var(--gray-700);
    text-decoration: none;
    transition: all 0.3s ease;
    border-radius: 16px;
    position: relative;
    overflow: hidden;
}

.nav-link:hover {
    background: #f1f5f9;
    color: var(--primary-color);
    transform: translateX(4px);
}

.nav-item.active .nav-link {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.nav-icon {
    font-size: var(--font-size-lg);
    margin-right: var(--spacing-3);
    transition: transform 0.3s ease;
}

.nav-link:hover .nav-icon {
    transform: scale(1.1);
}

.nav-text {
    font-weight: 500;
}

/* 主内容区域 */
.main-content {
    margin-left: 240px;
    margin-top: 64px;
    padding: var(--spacing-6);
    min-height: calc(100vh - 64px);
}

/* 标签页内容 */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* 页面头部 */
.page-header {
    margin-bottom: var(--spacing-8);
}

.page-header h2 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--gray-800);
    margin: 0 0 var(--spacing-2) 0;
}

.page-header p {
    color: var(--gray-600);
    margin: 0;
}

/* 统计卡片网格 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-8);
}

.stat-card {
    background: #ffffff;
    padding: var(--spacing-6);
    border-radius: 24px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.stat-icon {
    font-size: 2rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
    border-radius: 20px;
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.stat-content {
    flex: 1;
}

.stat-number {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: #1e293b;
    margin-bottom: var(--spacing-1);
}

.stat-label {
    color: var(--gray-600);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* 图表网格 */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-6);
}

.chart-card {
    background: #ffffff;
    padding: var(--spacing-6);
    border-radius: 24px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.chart-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.chart-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--gray-800);
    margin: 0 0 var(--spacing-4) 0;
}

.chart-card canvas {
    max-height: 300px;
}

/* 筛选器 */
.filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
    padding: var(--spacing-6);
    background: #ffffff;
    border-radius: 24px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

/* 签到记录筛选区域的操作按钮组，保持三个按钮同一行 */
.filter-group.filter-actions {
    align-self: flex-end;
}

.filter-actions-buttons {
    display: flex;
    gap: var(--spacing-3);
    align-items: center;
    white-space: nowrap;
}

.filter-group label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--gray-700);
}

.filter-group input,
.filter-group select {
    padding: var(--spacing-3) var(--spacing-4);
    border: 2px solid rgba(var(--gray-300-rgb), 0.3);
    border-radius: 12px;
    font-size: var(--font-size-sm);
    min-width: 140px;
    background: rgba(255, 255, 255, 0.8);
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.filter-group input:hover,
.filter-group select:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-1px);
    background: rgba(255, 255, 255, 0.95);
}

.filter-group input:focus,
.filter-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.1), 0 4px 12px rgba(0, 0, 0, 0.1);
    background: white;
    transform: scale(1.02);
}

.filters .btn {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.filters .btn:hover {
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.filters .btn-primary:hover {
    box-shadow: 0 6px 20px rgba(var(--primary-rgb), 0.4);
    transform: translateY(-2px);
    color: var(--gray-700);
}

/* 仪表盘学期课程面板 */
.dashboard-course-panel {
    margin-top: var(--spacing-4);
    background: #ffffff;
    border-radius: 24px;
    padding: var(--spacing-5);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
    border: 1px solid #e2e8f0;
    margin-bottom: 15px
}

.dashboard-course-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-3);
    flex-wrap: wrap;
}

.dashboard-course-panel-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--gray-800);
}

.dashboard-course-list {
    max-height: 260px;
    overflow-y: auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-3);
}

.dashboard-course-card {
    padding: var(--spacing-3);
    border-radius: 16px;
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
}

.dashboard-course-card:hover {
    background: #eff6ff;
    border-color: var(--primary-color);
    box-shadow: 0 6px 18px rgba(59, 130, 246, 0.25);
    transform: translateY(-2px);
}

.dashboard-course-card.active {
    background: #eff6ff;
    border-color: var(--primary-color);
    box-shadow: 0 6px 18px rgba(59, 130, 246, 0.3);
}

.dashboard-course-name {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--gray-800);
}

.dashboard-course-meta {
    font-size: var(--font-size-xs);
    color: var(--gray-500);
}

.dashboard-course-empty {
    font-size: var(--font-size-sm);
    color: var(--gray-500);
    text-align: center;
    padding: var(--spacing-3) 0;
}



/* 搜索栏 */
.search-bar {
    position: relative;
    flex: 1;
    min-width: 300px;
}

.search-bar input {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4) var(--spacing-3) 3rem;
    border: 2px solid var(--gray-200);
    border-radius: 20px;
    font-size: var(--font-size-base);
    transition: all 0.3s ease;
    background: #ffffff;
}

.search-bar input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.1);
    background: white;
    transform: scale(1.01);
}

/* 按钮样式 */
.btn {
    padding: var(--spacing-3) var(--spacing-6);
    border: none;
    border-radius: 16px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
    margin-top: 30px;
}

.btn-primary:hover {
    background: #2563eb;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background: #6b7280;
    color: white;
    box-shadow: 0 4px 15px rgba(107, 114, 128, 0.3);
    margin-top: 30px;
}

.btn-secondary:hover {
    background: #4b5563;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(107, 114, 128, 0.4);
}

/* 仪表盘“查看签到记录”激活态按钮（红色提示可点击） */
.btn-danger {
    background: #dc2626;
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(220, 38, 38, 0.3);
}

.btn-danger:hover {
    background: #b91c1c;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(220, 38, 38, 0.4);
}

.permission-item .btn.btn-small.btn-secondary {
  margin-bottom: 30px;
}

.filter-group .input_search{
    background: #f8f8f9;
    color: rgb(0, 0, 0);
    box-shadow: 0 4px 15px rgba(107, 114, 128, 0.3);
    margin-top: 30px;
}

.btn-small {
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-xs);
    border-radius: 12px;
}

/* 数据表格 */
.table-container {
    background: #ffffff;
    border-radius: 24px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    margin-bottom: var(--spacing-6);
    border: 1px solid #e2e8f0;
}

.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    border-radius: 20px;
    overflow: hidden;
}

.data-table th {
    background: linear-gradient(135deg, rgba(var(--gray-50-rgb), 0.8), rgba(var(--gray-100-rgb), 0.6));
    padding: var(--spacing-4);
    text-align: left;
    font-weight: 600;
    color: var(--gray-700);
    border-bottom: 2px solid rgba(var(--gray-200-rgb), 0.5);
    font-size: var(--font-size-sm);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 10;
}

.data-table th:first-child {
    border-top-left-radius: 20px;
}

.data-table th:last-child {
    border-top-right-radius: 20px;
}

.data-table tbody tr:last-child td:first-child {
    border-bottom-left-radius: 20px;
}

.data-table tbody tr:last-child td:last-child {
    border-bottom-right-radius: 20px;
}

.data-table td {
    padding: var(--spacing-4);
    border-bottom: 1px solid rgba(var(--gray-100-rgb), 0.5);
    font-size: var(--font-size-sm);
    color: var(--gray-700);
    transition: all 0.2s ease;
}

.data-table tr:hover {
    background: rgba(var(--primary-rgb), 0.05);
    transform: scale(1.01);
}

.data-table .loading {
    text-align: center;
    color: var(--gray-500);
    font-style: italic;
}

/* 状态标签 */
.status-badge {
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: 24px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-align: center;
    min-width: 70px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-badge:hover {
    transform: scale(1.05);
}

.status-attended,
.status-present {
    background-color: #4CAF50;
    color: #FFFFFF;
    border: 1px solid #4CAF50;
    border-radius: 4px;
}

.status-late {
    background: linear-gradient(135deg, #FFF3CD, #FFEAA7);
    color: #856404;
    border: 1px solid rgba(133, 100, 4, 0.2);
}

.status-absent {
    background: linear-gradient(135deg, #F8D7DA, #F5C6CB);
    color: #721C24;
    border: 1px solid rgba(114, 28, 36, 0.2);
}

.status-warning-yellow {
    background: linear-gradient(135deg, #FFF3CD, #FFEAA7);
    color: #856404;
    border: 1px solid rgba(133, 100, 4, 0.3);
}

.status-warning-red {
    background: linear-gradient(135deg, #F8D7DA, #F5C6CB);
    color: #721C24;
    border: 1px solid rgba(114, 28, 36, 0.3);
}

/* 考勤预警管理 */
.warning-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
}

.warning-toolbar-left {
    display: flex;
    gap: var(--spacing-2);
    flex-wrap: wrap;
}

.warning-toolbar-right .input_search {
    min-width: 200px;
    padding: var(--spacing-2) var(--spacing-3);
    border: 2px solid rgba(var(--gray-300-rgb), 0.3);
    border-radius: 8px;
}

.warning-tabs {
    display: flex;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-3);
}

.warning-tab {
    padding: var(--spacing-2) var(--spacing-4);
    border: 2px solid var(--gray-200);
    background: #fff;
    border-radius: 12px;
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all 0.2s ease;
}

.warning-tab:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.warning-tab.active {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

.warning-rules {
    font-size: var(--font-size-xs);
    color: var(--gray-600);
    margin-bottom: var(--spacing-3);
}

.warning-rule {
    margin-left: var(--spacing-4);
}

.warning-rule-desc {
    margin-left: var(--spacing-2);
    font-style: italic;
}

.warning-filters {
    margin-bottom: var(--spacing-3);
}

.link-sep {
    margin: 0 6px;
    color: var(--gray-400);
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-2);
    margin-top: var(--spacing-6);
}

.pagination .page-btn {
    padding: var(--spacing-2) var(--spacing-4);
    margin: 0 var(--spacing-1);
    border: 2px solid var(--gray-200);
    background: #ffffff;
    color: var(--gray-700);
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.pagination .page-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.pagination .page-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

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

.pagination .page-info {
    margin: 0 var(--spacing-4);
    color: var(--gray-600);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* 权限管理 */
.permission-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-6);
}

.permission-card {
    background: #ffffff;
    padding: var(--spacing-6);
    border-radius: 24px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
}

/* 工具页面样式 */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 20px;
    padding: 0;
}

.tool-card {
    background: white;
    border-radius: 16px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--gray-800);
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid #e2e8f0;
    aspect-ratio: 1;
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.tool-icon {
    width: 56px;
    height: 56px;
    background: #eff6ff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    color: var(--primary-color);
}

.tool-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: center;
}

.announcement-form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.announcement-content-group {
    grid-column: 1 / -1;
}

.announcement-form-actions {
    display: flex;
    gap: 10px;
    margin: 8px 0 16px 0;
}

.announcement-history {
    margin-top: 8px;
    border-top: 1px solid #e2e8f0;
    padding-top: 12px;
}

.announcement-history-title {
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 10px;
}

.announcement-history-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-height: 320px;
    overflow-y: auto;
    padding-right: 4px;
}

.announcement-history-item {
    border: 1px solid #e5e7eb;
    border-radius: 14px;
    padding: 10px 12px;
    background: #f8fafc;
}

.announcement-history-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.announcement-status {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 2px 8px;
    font-size: 12px;
    font-weight: 600;
}

.announcement-status.published {
    background: #dcfce7;
    color: #166534;
}

.announcement-status.offline {
    background: #fee2e2;
    color: #991b1b;
}

.announcement-time {
    font-size: 12px;
    color: #6b7280;
}

.announcement-history-content {
    color: #111827;
    line-height: 1.5;
    white-space: pre-wrap;
    word-break: break-word;
    margin-bottom: 8px;
}

.announcement-history-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
}

.announcement-tag {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 12px;
    background: #e0f2fe;
    color: #075985;
}

.announcement-tag.empty {
    background: #e5e7eb;
    color: #4b5563;
}

.announcement-history-actions {
    display: flex;
    justify-content: flex-end;
}

.permission-list-container {
    max-height: 280px;
    overflow-y: auto;
    border: 1px dashed #e2e8f0;
    border-radius: 16px;
    padding: var(--spacing-3);
    background: #f9fafb;
}

.permission-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3);
}

.permission-item {
    display: inline-flex;
    align-items: center;
    height: 64px;
    gap: var(--spacing-2);
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    padding: var(--spacing-2) var(--spacing-3);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.id-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    background: #eef2ff;
    color: #1e40af;
    font-weight: 600;
    margin-top:30px;
    margin-bottom:30px;
    border: 1px solid #c7d2fe;
}

.permission-actions {
    margin-top: var(--spacing-4);
    display: flex;
    gap: var(--spacing-3);
    align-items: center;
}

.permission-actions input {
    flex: 1 1 320px;
    min-width: 280px;
    margin-top:30px ;
    padding: var(--spacing-3) var(--spacing-4);
    border: 2px solid rgba(var(--gray-300-rgb), 0.5);
    border-radius: 16px;
    font-size: var(--font-size-sm);
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    transition: all 0.25s ease;
}

.permission-actions input:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-1px);
}

.permission-actions input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.12), 0 6px 18px rgba(0, 0, 0, 0.12);
    background: #ffffff;
    transform: scale(1.01);
}

.page-footer {
    display: flex;
    gap: var(--spacing-4);
    align-items: center;
}

/* 模态框 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: #ffffff;
    padding: var(--spacing-8);
    border-radius: 28px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    border: 1px solid #e2e8f0;
    max-width: 500px;
    width: 90%;
    transform: scale(0.9);
    transition: all 0.3s ease;
}

.modal.show .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-6);
    padding-bottom: var(--spacing-4);
    border-bottom: 2px solid #e2e8f0;
}

.modal-header h3 {
    margin: 0;
    color: #1e293b;
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.close {
    font-size: 24px;
    font-weight: bold;
    color: var(--gray-500);
    cursor: pointer;
    transition: all 0.3s ease;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(var(--gray-100-rgb), 0.5);
}

.close:hover {
    color: var(--primary-color);
    background: rgba(var(--primary-rgb), 0.1);
    transform: scale(1.1);
}

.modal-body {
    padding: var(--spacing-6);
    max-height: 60vh;
    overflow-y: auto;
}

/* 加载覆盖层 */
.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.8);
    z-index: 3000;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 5px solid #e2e8f0;
    border-top: 5px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

.loading-text {
    margin-top: var(--spacing-4);
    color: var(--gray-600);
    font-weight: 500;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 侧边栏遮罩层 */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 998;
}

.sidebar-overlay.show {
    display: block;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }
    
    .admin-title {
        font-size: var(--font-size-lg);
    }
    
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
        z-index: 999;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding: var(--spacing-4);
    }
    
    .admin-header {
        padding: 0 var(--spacing-4);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .charts-grid {
        grid-template-columns: 1fr;
    }
    
    .filters {
        flex-direction: column;
        gap: var(--spacing-3);
    }
    
    .filter-group {
        width: 100%;
    }
    
    .search-bar {
        flex-direction: column;
        gap: var(--spacing-3);
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
        max-height: 85vh;
    }
    
    /* 表格移动端优化 */
    .table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        border-radius: var(--border-radius-md);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    }
    
    .data-table {
        min-width: 800px; /* 确保表格有最小宽度 */
    }
    
    .data-table th,
    .data-table td {
        padding: var(--spacing-3);
        font-size: var(--font-size-xs);
        white-space: nowrap;
    }
    
    /* 表格滚动提示 */
    .table-container::after {
        content: "← 左右滑动查看更多 →";
        display: block;
        text-align: center;
        padding: var(--spacing-2);
        background: var(--gray-50);
        color: var(--gray-500);
        font-size: var(--font-size-xs);
        border-top: 1px solid var(--gray-200);
    }
    
    /* 分页移动端优化 */
    .pagination {
        flex-wrap: wrap;
        gap: var(--spacing-1);
    }
    
    .pagination button {
        padding: var(--spacing-1) var(--spacing-2);
        font-size: var(--font-size-xs);
        min-width: 32px;
    }
    
    .pagination .page-info {
        width: 100%;
        text-align: center;
        margin: var(--spacing-2) 0;
        order: -1;
    }
    
    /* 状态标签移动端优化 */
    .status-badge {
        font-size: 10px;
        padding: 2px 6px;
        min-width: 50px;
    }
    
    /* 按钮移动端优化 */
    .btn {
        padding: var(--spacing-2) var(--spacing-3);
        font-size: var(--font-size-xs);
    }
    
    .btn-small {
        padding: 4px 8px;
        font-size: 10px;
    }
}

/* 详情内容样式 */
.detail-item {
    margin-bottom: var(--spacing-4);
}

.detail-label {
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: var(--spacing-1);
}

.detail-value {
    color: var(--gray-600);
    word-break: break-word;
}

.detail-images {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-3);
    margin-top: var(--spacing-2);
}

.detail-image {
    max-width: 150px;
    max-height: 150px;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: transform 0.2s;
}

.detail-image:hover {
    transform: scale(1.05);
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: var(--spacing-12) var(--spacing-6);
    color: var(--gray-500);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-4);
}

.empty-state-text {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-2);
}

.empty-state-desc {
    font-size: var(--font-size-sm);
}

/* 照片缩略图样式 */
.photo-thumbnail {
    width: 50px;
    height: 50px;
    object-fit: cover;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 2px solid var(--gray-200);
    pointer-events: auto;
    position: relative;
    z-index: 1;
}

.photo-thumbnail:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-color: var(--primary-color);
}

.no-photo {
    color: var(--gray-400);
    font-size: var(--font-size-sm);
    font-style: italic;
}

/* 照片预览模态框 */
.photo-preview-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    animation: fadeIn 0.3s;
}

.photo-preview-modal.show {
    display: block;
}

.photo-preview-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 90%;
    max-height: 90%;
    text-align: center;
}

.photo-preview-image {
    max-width: 100%;
    max-height: 80vh;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.photo-preview-close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: white;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s;
}

.photo-preview-close:hover {
    color: var(--primary-color);
}

.photo-preview-info {
    color: white;
    margin-top: var(--spacing-4);
    font-size: var(--font-size-sm);
}

/* 签到详情中的照片 */
.detail-photo {
    max-width: 200px;
    max-height: 200px;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: transform 0.2s;
    border: 2px solid var(--gray-200);
}

.detail-photo:hover {
    transform: scale(1.05);
    border-color: var(--primary-color);
}

/* 反馈照片样式 */
.feedback-images {
    display: flex;
    gap: 4px;
    align-items: center;
    flex-wrap: wrap;
}

.feedback-images .photo-thumbnail {
    width: 40px;
    height: 40px;
    object-fit: cover;
    border-radius: 4px;
}

/* Select2 自定义样式 */
.select2-container--default .select2-selection--single {
    background-color: #fff;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    height: 42px;
    transition: all 0.2s ease-in-out;
    position: relative;
    padding-right: 2.5rem;
}

.select2-container--default .select2-selection--single:hover {
    border-color: #3b82f6;
}

.select2-container--default.select2-container--open .select2-selection--single {
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.select2-container--default .select2-selection--single .select2-selection__rendered {
    color: #374151;
    line-height: 40px;
    padding-left: 1rem;
}

.select2-container--default .select2-selection--single .select2-selection__arrow {
    height: 40px;
    right: 0.5rem;
}

.select2-container--default .select2-selection--single .select2-selection__arrow b {
    border-color: #9ca3af transparent transparent transparent;
    border-width: 6px 6px 0 6px;
}

.select2-container--default.select2-container--open .select2-selection--single .select2-selection__arrow b {
    border-color: transparent transparent #9ca3af transparent;
    border-width: 0 6px 6px 6px;
}

.select2-dropdown {
    background-color: #fff;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.select2-search--dropdown .select2-search__field {
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    padding: 0.5rem;
    transition: all 0.2s ease-in-out;
}

.select2-search--dropdown .select2-search__field:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.select2-results__option {
    padding: 0.75rem 1rem;
    transition: all 0.2s ease-in-out;
}

.select2-results__option--highlighted {
    background-color: #eff6ff;
    color: #1d4ed8;
}

.select2-results__option[aria-selected=true] {
    background-color: #dbeafe;
    color: #1e40af;
}

.more-images {
    background: #f3f4f6;
    color: #6b7280;
    font-size: 12px;
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid #e5e7eb;
}

/* 反馈详情照片样式 */
.feedback-detail-images {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.feedback-detail-images .detail-photo {
    max-width: 150px;
    max-height: 120px;
    border-radius: 8px;
    border: 1px solid #e5e7eb;
}

/* 小屏幕设备优化 */
@media (max-width: 480px) {
    .admin-header {
        padding: 0 var(--spacing-3);
        height: 56px;
    }
    
    .admin-title {
        font-size: var(--font-size-base);
    }
    
    .main-content {
        padding: var(--spacing-3);
        margin-top: 56px;
    }
    
    .sidebar {
        top: 56px;
        height: calc(100vh - 56px);
    }
    
    /* 表格进一步优化 */
    .data-table {
        min-width: 600px;
    }
    
    .data-table th,
    .data-table td {
        padding: var(--spacing-2);
        font-size: 11px;
    }
    
    /* 筛选器优化 */
    .filter-group input,
    .filter-group select {
        padding: var(--spacing-2);
        font-size: var(--font-size-xs);
    }
    
    /* 模态框优化 */
    .modal-content {
        width: 98%;
        margin: 5% auto;
        max-height: 90vh;
    }
    
    .modal-header {
        padding: var(--spacing-4);
    }
    
    .modal-body {
        padding: var(--spacing-4);
        max-height: calc(90vh - 120px);
        overflow-y: auto;
    }
    
    /* 反馈照片优化 */
    .feedback-images {
        gap: var(--spacing-2);
    }
    
    .photo-thumbnail {
        width: 40px;
        height: 40px;
    }
    
    .feedback-detail-images {
        gap: var(--spacing-2);
    }
    
    .feedback-detail-images .detail-photo {
        max-width: 120px;
        max-height: 100px;
    }
    
    /* 统计卡片优化 */
    .stat-card {
        padding: var(--spacing-3);
    }
    
    .stat-value {
        font-size: var(--font-size-xl);
    }
    
    .stat-label {
        font-size: var(--font-size-xs);
    }
}

/* 学生详情模态框样式 */
.large-modal {
    max-width: 900px;
    width: 95%;
    max-height: 90vh;
    overflow-y: auto;
}

.student-info-section {
    margin-bottom: var(--spacing-6);
    padding: var(--spacing-4);
    background: #f8fafc;
    border-radius: 16px;
    border: 1px solid #e2e8f0;
}

.student-info-section h4 {
    margin: 0 0 var(--spacing-4) 0;
    color: #1e293b;
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-4);
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
}

.info-label {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    font-weight: 500;
}

.info-value {
    font-size: var(--font-size-base);
    color: #1e293b;
    font-weight: 600;
}

.filter-section {
    margin-bottom: var(--spacing-6);
    padding: var(--spacing-4);
    background: #ffffff;
    border-radius: 16px;
    border: 1px solid #e2e8f0;
}

.filter-section h4 {
    margin: 0 0 var(--spacing-4) 0;
    color: #1e293b;
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.attendance-stats-section {
    margin-bottom: var(--spacing-6);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-4);
}

.attendance-records-section h4 {
    margin: 0 0 var(--spacing-4) 0;
    color: #1e293b;
    font-size: var(--font-size-lg);
    font-weight: 600;
}

/* 学生详情缺勤明细 */
.absence-filters {
    display: flex;
    gap: var(--spacing-4);
    align-items: center;
    margin-bottom: var(--spacing-4);
    flex-wrap: wrap;
}

.absence-filter-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.absence-filter-item select {
    min-width: 160px;
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: 10px;
    border: 1px solid #d1d5db;
}

.absence-table-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.absence-table-scroll .data-table {
    min-width: 860px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .large-modal {
        width: 98%;
        max-height: 95vh;
        margin: 10px;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .filter-row {
        flex-direction: column;
        gap: var(--spacing-3);
    }
}

.select2-container--default .select2-selection--single .select2-selection__clear {
    position: absolute;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    z-index: 2;
    cursor: pointer;
}