.admin-main {
    padding: 2rem;
}

.page-header {
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 1.8rem;
    color: var(--primary-blue);
    margin-bottom: 0.3rem;
}

.page-header p {
    color: var(--text-secondary);
}

/* 统计卡片网格 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-icon.blue {
    background: #EBF8FF;
    color: var(--accent-blue);
}

.stat-icon.green {
    background: #F0FFF4;
    color: var(--success-green);
}

.stat-icon.orange {
    background: #FFFAF0;
    color: #DD6B20;
}

.stat-icon.red {
    background: #FFF5F5;
    color: var(--error-red);
}

.stat-content h3 {
    font-size: 1.8rem;
    color: var(--primary-blue);
    margin-bottom: 0.2rem;
}

.stat-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.stat-trend {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.stat-trend.up {
    color: var(--success-green);
}

.stat-trend.urgent {
    color: var(--error-red);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* 图表行 */
.charts-row {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

@media (max-width: 1024px) {
    .charts-row {
        grid-template-columns: 1fr;
    }
}

.chart-card {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.chart-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--light-gray);
}

.chart-header h3 {
    font-size: 1rem;
    color: var(--primary-blue);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.chart-header h3 i {
    color: var(--accent-blue);
}

.chart-body {
    padding: 1.5rem;
    height: 280px;
}

/* 快捷操作区 */
.quick-actions {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 1024px) {
    .quick-actions {
        grid-template-columns: 1fr;
    }
}

.action-card {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.action-card .card-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--light-gray);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.action-card .card-header h3 {
    font-size: 1rem;
    color: var(--primary-blue);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.action-card .card-header h3 i {
    color: var(--accent-blue);
}

.view-all {
    font-size: 0.85rem;
    color: var(--accent-blue);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.view-all:hover {
    text-decoration: underline;
}

.action-card .card-body {
    padding: 1.5rem;
}

/* 待审核申请列表 */
.requests-list {
    max-height: 320px;
    overflow-y: auto;
}

.request-item {
    display: flex;
    align-items: center;
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--light-gray);
    gap: 1rem;
}

.request-item:last-child {
    border-bottom: none;
}

.request-type {
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    min-width: 50px;
    text-align: center;
}

.request-type.borrow {
    background: #EBF8FF;
    color: var(--accent-blue);
}

.request-type.return {
    background: #F0FFF4;
    color: var(--success-green);
}

.request-type.renew {
    background: #FFFAF0;
    color: #DD6B20;
}

.request-type.lost {
    background: #FFF5F5;
    color: var(--error-red);
}

.request-type.review {
    background: #F5F3FF;
    color: #7C3AED;
}

.request-info {
    flex: 1;
}

.request-info .book-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.2rem;
}

.request-info .user-name {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.request-time {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.request-actions {
    display: flex;
    gap: 0.5rem;
}

.request-actions button {
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    font-size: 0.8rem;
    transition: var(--transition);
}

.btn-approve {
    background: var(--success-green);
    color: white;
}

.btn-approve:hover {
    background: #2F855A;
}

.btn-reject {
    background: var(--light-gray);
    color: var(--text-primary);
}

.btn-reject:hover {
    background: #CBD5E0;
}

/* 快捷按钮 */
.quick-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.quick-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem 1rem;
    background: var(--light-bg);
    border-radius: 8px;
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid transparent;
}

.quick-btn:hover {
    background: white;
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

.quick-btn i {
    font-size: 1.5rem;
    color: var(--accent-blue);
    margin-bottom: 0.5rem;
}

.quick-btn span {
    font-size: 0.85rem;
    color: var(--text-primary);
}

/* 管理员徽章 */
.admin-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    background: #EBF8FF;
    color: var(--accent-blue);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    margin-top: 0.3rem;
}

/* 加载占位符 */
.loading-placeholder {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.empty-placeholder {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.empty-placeholder i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--mid-gray);
}

/* 徽章样式 */
.badge-warning {
    background: #FFC107 !important;
    color: #333 !important;
}

/* 侧边栏徽章在管理后台的颜色 */
.sidebar .badge {
    background: var(--accent-blue);
}

.sidebar .badge.badge-warning {
    background: #FFC107;
    color: #333;
}

/* ========== 申请审核页面样式 ========== */

/* 筛选栏 */
.filter-bar {
    background: white;
    padding: 1rem 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: flex-end;
    gap: 1rem;
    flex-wrap: wrap;
}

.filter-bar .filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.filter-bar label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.filter-bar select {
    padding: 0.6rem 1rem;
    border: 1px solid var(--light-gray);
    border-radius: 6px;
    font-size: 0.9rem;
    min-width: 140px;
    cursor: pointer;
}

.filter-bar select:focus {
    border-color: var(--accent-blue);
    outline: none;
}

.btn-filter, .btn-reset {
    padding: 0.6rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.btn-filter {
    background: var(--accent-blue);
    color: white;
    border: none;
}

.btn-filter:hover {
    background: var(--secondary-blue);
}

.btn-reset {
    background: white;
    color: var(--text-primary);
    border: 1px solid var(--light-gray);
}

.btn-reset:hover {
    background: var(--light-gray);
}

/* 批量操作栏 */
.batch-action-bar {
    background: #EBF8FF;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.select-all {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.9rem;
}

.select-all input {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.selected-count {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.selected-count strong {
    color: var(--accent-blue);
}

.btn-batch {
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.btn-batch-approve {
    background: var(--success-green);
    color: white;
    border: none;
}

.btn-batch-approve:hover {
    background: #2F855A;
}

.btn-batch-reject {
    background: white;
    color: var(--error-red);
    border: 1px solid var(--error-red);
}

.btn-batch-reject:hover {
    background: #FFF5F5;
}

/* 申请表格 */
.requests-table-container {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

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

.requests-table th {
    background: var(--light-bg);
    padding: 1rem;
    text-align: left;
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 600;
    border-bottom: 1px solid var(--light-gray);
}

.requests-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--light-gray);
    vertical-align: middle;
}

.requests-table tr:last-child td {
    border-bottom: none;
}

.requests-table tr:hover {
    background: #F7FAFC;
}

.col-checkbox {
    width: 50px;
    text-align: center !important;
}

.col-checkbox input {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.col-type {
    width: 80px;
}

.col-user {
    width: 140px;
}

.col-book {
    min-width: 200px;
}

.col-time {
    width: 120px;
}

.col-status {
    width: 90px;
}

.col-actions {
    width: 140px;
    text-align: center !important;
}

.loading-cell {
    text-align: center !important;
    padding: 3rem !important;
    color: var(--text-secondary);
}

.empty-cell {
    text-align: center !important;
    padding: 3rem !important;
    color: var(--text-secondary);
}

/* 表格内的状态标签 */
.status-badge {
    display: inline-block;
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-badge.pending {
    background: #FFC107;
    color: #333;
}

.status-badge.approved {
    background: #C6F6D5;
    color: #276749;
}

.status-badge.rejected {
    background: #FED7D7;
    color: #C53030;
}

/* 表格内的操作按钮 */
.table-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
}

.table-actions button {
    padding: 0.4rem 0.7rem;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    font-size: 0.8rem;
    transition: var(--transition);
}

.btn-view {
    background: var(--light-gray);
    color: var(--text-primary);
}

.btn-view:hover {
    background: #CBD5E0;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.pagination button {
    padding: 0.5rem 0.8rem;
    border: 1px solid var(--light-gray);
    background: white;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.pagination button:hover:not(:disabled) {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

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

.pagination button.active {
    background: var(--accent-blue);
    color: white;
    border-color: var(--accent-blue);
}

.pagination-info {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-left: 1rem;
}

/* 模态框扩展样式 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: flex-start;
    z-index: 2000;
    padding: 2rem 1rem;
    overflow-y: auto;
}

.modal-overlay.show {
    display: flex;
}

.modal-box {
    background: white;
    width: 90%;
    max-width: 480px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    max-height: 85vh;
}

.modal-box.modal-lg {
    max-width: 650px;
}

.modal-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--light-gray);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.modal-header h3 {
    color: var(--primary-blue);
    margin: 0;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-header.warning-header {
    background: #FFF5F5;
}

.modal-header.warning-header h3 {
    color: var(--error-red);
}

.close-modal {
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color 0.2s;
}

.close-modal:hover {
    color: var(--error-red);
}

.modal-body {
    padding: 1.5rem;
    overflow-y: auto;
    flex: 1;
    min-height: 0;
}

.modal-body p {
    margin-bottom: 0.5rem;
}

.modal-body textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--light-gray);
    border-radius: 6px;
    font-size: 0.9rem;
    resize: vertical;
}

.modal-body textarea:focus {
    border-color: var(--accent-blue);
    outline: none;
}

.warning-text {
    color: var(--error-red);
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--light-gray);
    display: flex;
    justify-content: flex-end;
    gap: 0.8rem;
    background: #F9FAFB;
    border-radius: 0 0 12px 12px;
    flex-shrink: 0;
}

.btn-cancel {
    background: white;
    border: 1px solid var(--light-gray);
    color: var(--text-primary);
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}

.btn-cancel:hover {
    background: var(--light-gray);
}

.btn-confirm {
    background: var(--accent-blue);
    color: white;
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: var(--transition);
}

.btn-confirm:hover {
    background: var(--secondary-blue);
}

.btn-danger {
    background: var(--error-red);
    color: white;
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: var(--transition);
}

.btn-danger:hover {
    background: #C53030;
}

/* 详情模态框 */
.detail-row {
    display: flex;
    margin-bottom: 0.8rem;
}

.detail-label {
    width: 80px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.detail-value {
    flex: 1;
    font-size: 0.9rem;
}

.detail-section {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--light-gray);
}

.detail-section-title {
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 0.8rem;
}

/* 书籍信息 */
.book-info-cell {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.book-info-cell .book-cover {
    width: 40px;
    height: 56px;
    border-radius: 4px;
    object-fit: cover;
    background: var(--light-gray);
}

.book-info-cell .book-text {
    overflow: hidden;
}

.book-info-cell .book-title {
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.book-info-cell .book-author {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* 用户信息 */
.user-info-cell .user-name {
    font-weight: 500;
}

.user-info-cell .user-phone {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ========== 图书管理页面样式 ========== */

.search-group {
    flex: 1;
    min-width: 200px;
}

.search-group input {
    width: 100%;
    padding: 0.6rem 1rem;
    border: 1px solid var(--light-gray);
    border-radius: 6px;
    font-size: 0.9rem;
}

.search-group input:focus {
    border-color: var(--accent-blue);
    outline: none;
}

.btn-add {
    background: var(--success-green);
    color: white;
    border: none;
    padding: 0.6rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: var(--transition);
}

.btn-add:hover {
    background: #2F855A;
}

.books-table-container, .users-table-container {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

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

.data-table th {
    background: var(--light-bg);
    padding: 1rem;
    text-align: left;
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 600;
    border-bottom: 1px solid var(--light-gray);
}

.data-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--light-gray);
    vertical-align: middle;
}

.data-table tr:last-child td {
    border-bottom: none;
}

.data-table tr:hover {
    background: #F7FAFC;
}

.col-cover {
    width: 60px;
}

.table-cover {
    width: 40px;
    height: 56px;
    border-radius: 4px;
    object-fit: cover;
    background: var(--light-gray);
}

.col-title {
    min-width: 150px;
}

.col-author, .col-isbn {
    width: 100px;
}

.col-genre {
    width: 120px;
}

.col-stock {
    width: 80px;
    text-align: center;
}

.status-badge.available {
    background: #C6F6D5;
    color: #276749;
}

.status-badge.unavailable {
    background: #FED7D7;
    color: #C53030;
}

.status-badge.active {
    background: #C6F6D5;
    color: #276749;
}

.status-badge.suspended {
    background: #FED7D7;
    color: #C53030;
}

.btn-edit {
    background: #EBF8FF;
    color: var(--accent-blue);
}

.btn-edit:hover {
    background: #BEE3F8;
}

.btn-delete {
    background: #FFF5F5;
    color: var(--error-red);
}

.btn-delete:hover {
    background: #FED7D7;
}

/* 表单样式 */
.form-row {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-row .form-group {
    flex: 1;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.3rem;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.6rem 0.8rem;
    border: 1px solid var(--light-gray);
    border-radius: 6px;
    font-size: 0.9rem;
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--accent-blue);
    outline: none;
}

.form-group small {
    display: block;
    margin-top: 0.3rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.genre-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.genre-tag {
    padding: 0.3rem 0.8rem;
    border: 1px solid var(--light-gray);
    border-radius: 20px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.genre-tag:hover {
    border-color: var(--accent-blue);
}

.genre-tag.active {
    background: var(--accent-blue);
    color: white;
    border-color: var(--accent-blue);
}

/* ========== 用户管理页面样式 ========== */

.table-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--accent-blue);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
}

.col-avatar {
    width: 50px;
}

.col-user {
    min-width: 140px;
}

.user-cell {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.user-phone {
    font-weight: 500;
}

.admin-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    background: #EBF8FF;
    color: var(--accent-blue);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
}

.col-school {
    width: 120px;
}

.col-borrow {
    width: 130px;
}

.borrow-stat .active {
    color: var(--accent-blue);
    font-weight: 600;
}

.borrow-stat .total {
    color: var(--text-secondary);
}

.col-date {
    width: 100px;
}

.btn-toggle {
    padding: 0.4rem 0.7rem;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    font-size: 0.8rem;
    transition: var(--transition);
}

.btn-disable {
    background: #FFF5F5;
    color: var(--error-red);
}

.btn-disable:hover {
    background: #FED7D7;
}

.btn-enable {
    background: #F0FFF4;
    color: var(--success-green);
}

.btn-enable:hover {
    background: #C6F6D5;
}

.btn-key {
    background: #FFFAF0;
    color: #DD6B20;
}

.btn-key:hover {
    background: #FEEBC8;
}

/* 响应式 */
@media (max-width: 768px) {
    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-bar .filter-group {
        width: 100%;
    }
    
    .form-row {
        flex-direction: column;
    }
}

/* ========== 数据统计页面样式 ========== */

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.header-left h1 {
    font-size: 1.8rem;
    color: var(--primary-blue);
    margin-bottom: 0.3rem;
}

.header-left p {
    color: var(--text-secondary);
}

.btn-export {
    background: var(--success-green);
    color: white;
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.btn-export:hover {
    background: #2F855A;
}

/* 图表切换标签 */
.chart-tabs {
    display: flex;
    gap: 0.5rem;
}

.chart-tab {
    padding: 0.3rem 0.8rem;
    border: 1px solid var(--light-gray);
    background: white;
    border-radius: 4px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition);
}

.chart-tab:hover {
    border-color: var(--accent-blue);
}

.chart-tab.active {
    background: var(--accent-blue);
    color: white;
    border-color: var(--accent-blue);
}

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

/* 排行榜区域 */
.ranking-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 1024px) {
    .ranking-row {
        grid-template-columns: 1fr;
    }
}

.ranking-card {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.ranking-card .card-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--light-gray);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.ranking-card .card-header h3 {
    font-size: 1rem;
    color: var(--primary-blue);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.ranking-card .card-header h3 i {
    color: var(--accent-blue);
}

.ranking-card .card-body {
    padding: 0;
}

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

.ranking-table th {
    background: var(--light-bg);
    padding: 0.8rem 1rem;
    text-align: left;
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.ranking-table td {
    padding: 0.8rem 1rem;
    border-bottom: 1px solid var(--light-gray);
    font-size: 0.9rem;
}

.ranking-table tr:last-child td {
    border-bottom: none;
}

.ranking-table tr:hover {
    background: #F7FAFC;
}

.rank-cell {
    width: 50px;
}

.rank-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--light-gray);
    font-size: 0.75rem;
    font-weight: 600;
}

.rank-badge.top-1 {
    background: #FFD700;
    color: #333;
}

.rank-badge.top-2 {
    background: #C0C0C0;
    color: #333;
}

.rank-badge.top-3 {
    background: #CD7F32;
    color: white;
}

.book-title-cell {
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.count-cell {
    font-weight: 600;
    color: var(--accent-blue);
}

/* 时间筛选快捷选项 */
.date-shortcuts {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.date-shortcut {
    padding: 0.3rem 0.8rem;
    border: 1px solid var(--light-gray);
    background: white;
    border-radius: 4px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition);
}

.date-shortcut:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.date-shortcut.active {
    background: var(--accent-blue);
    color: white;
    border-color: var(--accent-blue);
}

/* 批量操作栏增强 */
.batch-action-bar {
    background: #EBF8FF;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.batch-action-bar .batch-actions {
    display: flex;
    gap: 0.5rem;
    margin-left: auto;
}

/* 导出按钮 */
.btn-export-small {
    background: white;
    color: var(--accent-blue);
    border: 1px solid var(--accent-blue);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: var(--transition);
}

.btn-export-small:hover {
    background: var(--accent-blue);
    color: white;
}

/* 库存快速编辑 */
.stock-edit {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.stock-edit input {
    width: 50px;
    padding: 0.3rem;
    border: 1px solid var(--light-gray);
    border-radius: 4px;
    text-align: center;
    font-size: 0.9rem;
}

.stock-edit input:focus {
    border-color: var(--accent-blue);
    outline: none;
}

.stock-edit button {
    padding: 0.3rem 0.5rem;
    border: none;
    background: var(--success-green);
    color: white;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.75rem;
}

.stock-edit button:hover {
    background: #2F855A;
}

/* 日期范围筛选 */
.date-range-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.date-range-group input[type="date"] {
    padding: 0.5rem;
    border: 1px solid var(--light-gray);
    border-radius: 6px;
    font-size: 0.85rem;
}

.date-range-group span {
    color: var(--text-secondary);
}

/* ========== 通知管理页面样式 ========== */

.stats-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1200px) {
    .stats-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .stats-grid-4 {
        grid-template-columns: 1fr;
    }
}

.stat-card.clickable {
    cursor: pointer;
}

.stat-card.clickable:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.12);
}

.col-due {
    width: 100px;
}

.text-danger {
    color: var(--error-red) !important;
    font-weight: 600;
}

.btn-notify {
    background: #EBF8FF;
    color: var(--accent-blue);
}

.btn-notify:hover {
    background: #BEE3F8;
}

.btn-batch-notify {
    background: var(--accent-blue);
    color: white;
    border: none;
}

.btn-batch-notify:hover {
    background: var(--secondary-blue);
}

.notify-target-info {
    background: #F7FAFC;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.target-card {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.target-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.target-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.target-value {
    font-weight: 600;
    color: var(--primary-blue);
}

.template-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.template-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--light-gray);
    background: white;
    border-radius: 6px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.template-btn:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.template-btn.active {
    background: var(--accent-blue);
    color: white;
    border-color: var(--accent-blue);
}

.template-btn i {
    font-size: 0.9rem;
}

.form-hint {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.3rem;
}

.required {
    color: var(--error-red);
}

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

.status-badge.borrowed {
    background: #EBF8FF;
    color: var(--accent-blue);
}

.status-badge.overdue {
    background: #FED7D7;
    color: #C53030;
}

.status-badge.due-today {
    background: #FFFAF0;
    color: #DD6B20;
}

.status-badge.returned {
    background: #E2E8F0;
    color: #64748B;
}

.filter-bar input[type="text"] {
    padding: 0.6rem 1rem;
    border: 1px solid var(--light-gray);
    border-radius: 6px;
    font-size: 0.9rem;
    min-width: 140px;
}

.filter-bar input[type="text"]:focus {
    border-color: var(--accent-blue);
    outline: none;
}

/* 活动表单优化 */
.form-group.half {
    flex: 1;
    min-width: 0;
}

.form-row {
    display: flex;
    gap: 1rem;
    margin-bottom: 0.8rem;
}

.form-group {
    margin-bottom: 0.8rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 0.5rem 0.7rem;
    border: 1px solid var(--light-gray);
    border-radius: 6px;
    font-size: 0.9rem;
}

.image-upload-area {
    margin-bottom: 0.5rem;
}

.multi-image-upload {
    margin-bottom: 0.5rem;
}

.btn-import {
    padding: 0.6rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.4rem;
    background: #10B981;
    color: white;
    border: none;
}

.btn-import:hover {
    background: #059669;
}

.btn-batch-stock {
    background: #8B5CF6;
    color: white;
}

.btn-batch-stock:hover {
    background: #7C3AED;
}

.file-upload-area {
    border: 2px dashed var(--light-gray);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: #FAFAFA;
}

.file-upload-area:hover, .file-upload-area.dragover {
    border-color: var(--accent-blue);
    background: #EBF8FF;
}

.file-upload-area i {
    font-size: 3rem;
    color: var(--accent-blue);
    margin-bottom: 1rem;
}

.file-upload-area p {
    margin: 0.5rem 0;
    color: var(--text-secondary);
}

.file-upload-area .file-types {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.import-actions {
    margin-top: 1rem;
    text-align: center;
}

.download-template-link {
    color: var(--accent-blue);
    font-size: 0.9rem;
    text-decoration: none;
}

.download-template-link:hover {
    text-decoration: underline;
}

.import-steps {
    min-height: 200px;
}

.step-title {
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.preview-summary {
    display: flex;
    gap: 2rem;
    margin-bottom: 1rem;
    padding: 0.8rem 1rem;
    background: #F8FAFC;
    border-radius: 8px;
}

.preview-summary .valid-count {
    color: #10B981;
}

.preview-summary .invalid-count {
    color: #EF4444;
}

.preview-table-container {
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid var(--light-gray);
    border-radius: 8px;
}

.preview-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.preview-table th, .preview-table td {
    padding: 0.6rem 0.8rem;
    text-align: left;
    border-bottom: 1px solid var(--light-gray);
}

.preview-table th {
    background: #F8FAFC;
    font-weight: 600;
    position: sticky;
    top: 0;
}

.preview-table tr.invalid-row {
    background: #FEF2F2;
}

.status-valid {
    color: #10B981;
}

.status-invalid {
    color: #EF4444;
    font-size: 0.8rem;
}

.import-result {
    text-align: center;
    padding: 2rem;
}

.import-result .success-icon {
    font-size: 4rem;
    color: #10B981;
    margin-bottom: 1rem;
}

.import-result p {
    margin: 0.5rem 0;
    font-size: 1rem;
}

.loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}

.loading i {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.form-group select {
    width: 100%;
    padding: 0.5rem 0.7rem;
    border: 1px solid var(--light-gray);
    border-radius: 6px;
    font-size: 0.9rem;
    background: white;
    cursor: pointer;
}

.form-group select:focus {
    border-color: var(--accent-blue);
    outline: none;
}

.btn-select-all-filtered {
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
    background: transparent;
    color: var(--accent-blue);
    border: 1px solid var(--accent-blue);
    margin-left: 0.5rem;
}

.btn-select-all-filtered:hover {
    background: var(--accent-blue);
    color: white;
}

.status-update {
    color: #F59E0B;
    font-size: 0.85rem;
}

.update-row {
    background: #FFFBEB;
}

.update-stock-label {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    cursor: pointer;
    white-space: nowrap;
}

.update-stock-label input[type="checkbox"] {
    width: 14px;
    height: 14px;
    cursor: pointer;
}

.preview-hint {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 0.5rem 0 1rem;
    padding: 0.5rem;
    background: #F8FAFC;
    border-radius: 6px;
}

.preview-summary .new-count {
    color: #10B981;
}

.preview-summary .update-count {
    color: #F59E0B;
}

#total-info {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-left: 0.3rem;
}

.super-admin-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    background: linear-gradient(135deg, #FFD700, #FFA500);
    color: #333;
    font-size: 0.7rem;
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    margin-left: 0.5rem;
}

.btn-remove-admin {
    padding: 0.4rem 0.6rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    background: #fff3e0;
    color: #f57c00;
    transition: all 0.2s;
}

.btn-remove-admin:hover {
    background: #ffe0b2;
}

.admin-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    background: #e3f2fd;
    color: #1976d2;
    font-size: 0.7rem;
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    margin-left: 0.5rem;
}

.level-badge {
    display: inline-block;
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
}

.level-badge.super {
    background: linear-gradient(135deg, #FFD700, #FFA500);
    color: #333;
}

.level-badge.normal {
    background: #E0E7FF;
    color: #4F46E5;
}

.permissions-checkboxes {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.5rem;
    margin-top: 0.5rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    cursor: pointer;
    font-size: 0.9rem;
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.import-info {
    background: #F8FAFC;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.import-info p {
    margin: 0.3rem 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.import-drop-zone {
    border: 2px dashed #ddd;
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    background: #fafafa;
}

.import-drop-zone:hover {
    border-color: #409eff;
    background: #f0f7ff;
}

.import-drop-zone i {
    font-size: 2.5rem;
    color: #999;
    margin-bottom: 0.5rem;
}

.import-drop-zone p {
    margin: 0.5rem 0 0;
    color: #666;
}

.user-select-item {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid #eee;
    cursor: pointer;
    transition: background 0.2s;
}

.user-select-item:hover {
    background: #f5f5f5;
}

.user-select-item.selected {
    background: #e8f5e9;
}

.user-select-item .add-user-checkbox {
    margin-right: 1rem;
    width: 18px;
    height: 18px;
}

.user-select-item .user-info {
    flex: 1;
}

.user-select-item .user-phone {
    font-weight: 500;
}

.user-select-item .user-school {
    font-size: 0.85rem;
    color: #999;
    margin-left: 0.5rem;
}

.user-type-label {
    display: inline-block;
    font-size: 0.7rem;
    padding: 0.1rem 0.4rem;
    border-radius: 3px;
    margin-left: 0.5rem;
    font-weight: normal;
}

.user-type-label.phone {
    background: #e3f2fd;
    color: #1976d2;
}

.user-type-label.education {
    background: #fff3e0;
    color: #f57c00;
}

.status-badge.pending-pickup {
    background: #e8f5e9;
    color: #2e7d32;
}

.status-badge.picked-up {
    background: #e3f2fd;
    color: #1565c0;
}

.btn-pickup {
    padding: 0.4rem 0.6rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    background: #e8f5e9;
    color: #2e7d32;
    transition: all 0.2s;
}

.btn-pickup:hover {
    background: #c8e6c9;
}

.btn-return {
    padding: 0.4rem 0.6rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    background: #fff3e0;
    color: #f57c00;
    transition: all 0.2s;
}

.btn-return:hover {
    background: #ffe0b2;
}

.btn-batch-pickup {
    background: #4caf50;
    color: white;
}

.btn-batch-pickup:hover {
    background: #43a047;
}

.btn-batch-return {
    background: #ff9800;
    color: white;
}

.btn-batch-return:hover {
    background: #f57c00;
}

.registration-stats {
    display: flex;
    gap: 15px;
}

.check-in-status {
    font-size: 0.75rem;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    margin-left: 5px;
}

.check-in-status.checked-in {
    background: #e8f5e9;
    color: #2e7d32;
}

.check-in-status.not-checked-in {
    background: #fff3e0;
    color: #f57c00;
}

.btn-check-in {
    padding: 0.3rem 0.6rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    background: #2196f3;
    color: white;
    font-size: 0.8rem;
    transition: all 0.2s;
}

.btn-check-in:hover {
    background: #1976d2;
}

.reg-checkbox {
    margin-right: 10px;
    width: 16px;
    height: 16px;
}

.registration-item {
    display: flex;
    align-items: center;
}

.check-in-time {
    font-size: 0.75rem;
    color: #888;
}