/* 自定义样式 */

/* 整体布局 */
body {
    background: linear-gradient(135deg, #e8eaf6 0%, #c5cae9 100%);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    min-height: 100vh;
    color: #212529;
}

/* 导航栏样式 */
.navbar {
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%) !important;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.25rem;
}

/* 卡片样式 */
.card {
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    background: #ffffff;
    backdrop-filter: blur(10px);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* 数据集卡片图片样式 */
.card-img-top-container:hover img {
    transform: scale(1.05);
}

.card-img-top {
    transition: transform 0.3s ease;
}

/* 图片加载占位符 */
.card-img-top-placeholder {
    border-radius: 12px 12px 0 0;
    transition: all 0.3s ease;
}

.card:hover .card-img-top-placeholder {
    background: linear-gradient(135deg, #e9ecef 0%, #dee2e6 100%);
}

.card-header {
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 12px 12px 0 0 !important;
    border: none;
    font-weight: 600;
}

.card-title {
    color: #212529;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

/* 筛选面板样式 */
.filters-section {
    background: #ffffff;
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.filters-section h5 {
    color: #212529;
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* 表单控件样式 */
.form-control, .form-select {
    border-radius: 8px;
    border: 1px solid #ced4da;
    transition: all 0.2s ease;
    background-color: #ffffff;
    color: #495057;
    font-weight: 500;
}

.form-control:focus, .form-select:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.15);
    background-color: #fff;
}

/* 按钮样式 */
.btn {
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.2s ease;
    border: none;
    padding: 0.5rem 1rem;
}

.btn-primary {
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(90deg, #5a67d8 0%, #68559a 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-outline-primary {
    border: 2px solid #667eea;
    color: #667eea;
    background: transparent;
}

.btn-outline-primary:hover {
    background: #667eea;
    color: white;
    transform: translateY(-1px);
}

.btn-outline-secondary {
    border: 2px solid #718096;
    color: #718096;
}

.btn-outline-secondary:hover {
    background: #718096;
    color: white;
    transform: translateY(-1px);
}

.btn-outline-danger {
    border: 2px solid #e53e3e;
    color: #e53e3e;
}

.btn-outline-danger:hover {
    background: #e53e3e;
    color: white;
    transform: translateY(-1px);
}

/* 徽章样式 */
.badge {
    border-radius: 20px;
    font-weight: 500;
    padding: 0.35em 0.8em;
}

.badge.bg-primary {
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%) !important;
}

.category-badge {
    font-size: 0.75rem;
    letter-spacing: 0.025em;
}

/* 数据集元信息样式 */
.dataset-meta {
    font-size: 0.875rem;
    color: #495057;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 12px;
    font-weight: 500;
}

.dataset-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.dataset-meta i {
    color: #a0aec0;
}

/* 统计信息样式 */
.stats-grid {
    background: rgba(102, 126, 234, 0.1);
    border-radius: 8px;
    padding: 12px;
    margin-top: 12px;
    border: 1px solid rgba(102, 126, 234, 0.2);
}

.stats-grid .col-4 {
    text-align: center;
    padding: 8px 4px;
}

.stats-grid small {
    color: #495057;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    font-weight: 600;
}

.stats-grid strong {
    color: #212529;
    font-size: 1.1rem;
    font-weight: 700;
}

/* 分页样式 */
.pagination {
    margin-top: 2rem;
}

.page-link {
    border-radius: 8px;
    margin: 0 2px;
    border: 1px solid #e2e8f0;
    color: #667eea;
    transition: all 0.2s ease;
}

.page-link:hover {
    background-color: #667eea;
    border-color: #667eea;
    color: white;
    transform: translateY(-1px);
}

.page-item.active .page-link {
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    border-color: #667eea;
}

/* 表格样式 */
.table {
    background: #ffffff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.table th {
    background: rgba(102, 126, 234, 0.15);
    border: none;
    font-weight: 700;
    color: #212529;
    padding: 12px;
}

.table td {
    border: none;
    padding: 12px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    color: #495057;
    font-weight: 500;
}

/* 代码块样式 */
pre {
    background: #2d3748 !important;
    color: #f7fafc !important;
    border-radius: 8px;
    padding: 16px;
    font-size: 0.875rem;
    line-height: 1.5;
    overflow-x: auto;
    border: 1px solid #4a5568;
}

pre code {
    background: #2d3748 !important;
    color: #f7fafc !important;
    font-weight: 500;
}

/* 修复白色背景代码块问题 */
.card-body pre {
    background: #2d3748 !important;
    color: #f7fafc !important;
}

.card-body pre code {
    background: transparent !important;
    color: #f7fafc !important;
}

/* 确保所有代码块都有深色背景 */
pre, code {
    background: #2d3748 !important;
    color: #f7fafc !important;
}

/* 行内代码样式 */
code {
    background: #e9ecef !important;
    color: #495057 !important;
    padding: 2px 4px;
    border-radius: 4px;
    font-size: 0.875em;
}

/* 代码块内的代码保持深色主题 */
pre code {
    background: transparent !important;
    color: #f7fafc !important;
    padding: 0;
}

/* 额外的代码块样式修复 */
.bg-light {
    background: #2d3748 !important;
    color: #f7fafc !important;
}

/* 确保引用信息代码块正确显示 */
div pre, .card pre, .card-body pre {
    background: #2d3748 !important;
    color: #f7fafc !important;
}

/* Bootstrap 覆盖 */
.bg-light pre {
    background: #2d3748 !important;
    color: #f7fafc !important;
}

/* 任何包含代码的区域 */
*:has(pre) pre {
    background: #2d3748 !important;
    color: #f7fafc !important;
}

/* 警告框样式 */
.alert {
    border: none;
    border-radius: 8px;
    padding: 12px 16px;
    margin-bottom: 1rem;
}

.alert-success {
    background: rgba(72, 187, 120, 0.1);
    color: #276749;
    border-left: 4px solid #48bb78;
}

.alert-danger {
    background: rgba(229, 62, 62, 0.1);
    color: #742a2a;
    border-left: 4px solid #e53e3e;
}

/* 空状态样式 */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: #495057;
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 1rem;
    color: #adb5bd;
}

.empty-state h5 {
    color: #212529;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

/* 加载状态 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    .filters-section {
        margin-bottom: 1rem;
    }
    
    .dataset-meta {
        flex-direction: column;
        gap: 8px;
    }
    
    .stats-grid .col-4 {
        margin-bottom: 12px;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .btn {
        width: 100%;
        margin-bottom: 8px;
    }
    
    .btn:last-child {
        margin-bottom: 0;
    }
}

@media (max-width: 576px) {
    .navbar-brand {
        font-size: 1rem;
    }
    
    .container {
        padding-left: 10px;
        padding-right: 10px;
    }
    
    .card {
        margin-bottom: 1rem;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* 工具提示样式 */
.tooltip-inner {
    background-color: #2d3748;
    border-radius: 6px;
    font-size: 0.875rem;
}

/* 模态框样式 */
.modal-content {
    border: none;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.modal-header {
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 12px 12px 0 0;
}

.modal-footer {
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 0 0 12px 12px;
}

/* Footer样式 */
footer {
    background: #ffffff !important;
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    color: #495057;
}

/* 增强文本对比度 */
h1, h2, h3, h4, h5, h6 {
    color: #212529 !important;
    font-weight: 700;
}

p, span, div {
    color: #495057;
}

.text-muted {
    color: #6c757d !important;
    font-weight: 500;
}

/* 链接样式增强 */
a {
    color: #667eea;
    font-weight: 600;
    text-decoration: none;
}

a:hover {
    color: #5a67d8;
    text-decoration: underline;
}

/* 加载覆盖层 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    backdrop-filter: blur(5px);
}

.loading-spinner {
    text-align: center;
    color: #667eea;
}

.loading-spinner p {
    margin-top: 1rem;
    font-weight: 500;
}

/* 返回顶部按钮动画 */
.back-to-top {
    transition: all 0.3s ease;
}

.back-to-top:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.4) !important;
}

/* Toast容器样式 */
.toast {
    backdrop-filter: blur(10px);
}

/* 搜索高亮效果 */
.search-highlight {
    background: linear-gradient(90deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border: 2px solid rgba(102, 126, 234, 0.3);
    transform: scale(1.02);
}

/* 键盘快捷键提示 */
.shortcut-hint {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.75rem;
    color: #a0aec0;
    pointer-events: none;
}

/* 文件预览样式 */
#file-preview .card {
    border: 2px dashed #cbd5e0;
    background: rgba(249, 250, 251, 0.8);
}

#file-info .alert {
    border: none;
    border-radius: 8px;
    background: rgba(102, 126, 234, 0.1);
    border-left: 4px solid #667eea;
    color: #4c51bf;
}

/* 删除按钮加载状态 */
.btn[disabled] {
    opacity: 0.6;
    cursor: not-allowed;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 选择状态样式 */
::selection {
    background: rgba(102, 126, 234, 0.3);
    color: #2d3748;
}

::-moz-selection {
    background: rgba(102, 126, 234, 0.3);
    color: #2d3748;
}

/* 聚焦状态增强 */
.form-control:focus,
.form-select:focus,
.btn:focus {
    outline: none;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

/* 数据集卡片悬停时的详细信息显示 */
.card-hover-details {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    border-radius: 0 0 12px 12px;
    padding: 15px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 10;
    backdrop-filter: blur(10px);
}

.card:hover .card-hover-details {
    opacity: 1;
    transform: translateY(0);
}

/* 进度指示器 */
.progress-indicator {
    height: 3px;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 9999;
    transition: width 0.3s ease;
}

/* 图片延迟加载占位符 */
.img-placeholder {
    background: linear-gradient(45deg, #f7fafc 25%, transparent 25%), 
                linear-gradient(-45deg, #f7fafc 25%, transparent 25%), 
                linear-gradient(45deg, transparent 75%, #f7fafc 75%), 
                linear-gradient(-45deg, transparent 75%, #f7fafc 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { background-position: 0 0, 0 10px, 10px -10px, -10px 0px; }
    100% { background-position: 20px 20px, 20px 30px, 30px 10px, 10px 20px; }
}

/* 错误状态样式 */
.error-state {
    text-align: center;
    padding: 3rem 2rem;
    color: #e53e3e;
}

.error-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #feb2b2;
}

/* 成功状态样式 */
.success-state {
    text-align: center;
    padding: 3rem 2rem;
    color: #38a169;
}

.success-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #9ae6b4;
}

/* 数据集卡片网格优化 */
.dataset-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    padding: 0;
}

/* 数据集卡片统一高度 */
.dataset-card {
    height: 100%;
    min-height: 550px;
    display: flex;
    flex-direction: column;
}

.dataset-card .card-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

/* 标题区域固定高度 */
.dataset-title {
    height: 3rem;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    line-height: 1.4;
}

/* 元信息区域固定高度 */
.dataset-meta-section {
    min-height: 5rem;
    margin-bottom: 1rem;
}

.dataset-meta-section .badge {
    margin-bottom: 0.5rem;
}

.dataset-meta-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

/* 描述区域固定高度 */
.dataset-description {
    height: 3.5rem;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    line-height: 1.4;
    margin-bottom: auto;
}

/* 统计信息区域 */
.dataset-stats {
    margin-top: auto;
    padding-top: 1rem;
}

/* 优化网格在不同屏幕尺寸下的表现 */
@media (min-width: 1200px) {
    .dataset-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 992px) and (max-width: 1199px) {
    .dataset-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 991px) {
    .dataset-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .dataset-card {
        min-height: auto;
    }
}

/* 图片容器统一高度 */
.dataset-image-container {
    height: 200px;
    overflow: hidden;
    border-radius: 12px 12px 0 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.dataset-image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.dataset-image-container:hover img {
    transform: scale(1.05);
}

/* 卡片悬停效果优化 */
.dataset-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}

/* 按钮区域固定位置 */
.dataset-actions {
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

/* 管理后台侧边栏样式 */
.admin-sidebar-card {
    top: 1rem !important;
    width: 100%; /* 确保卡片填满容器 */
}

/* 确保管理后台侧边栏列有固定宽度 */
.admin-sidebar-column {
    min-width: 280px !important;
    max-width: 300px !important;
    flex: 0 0 280px !important; /* 固定宽度，不伸缩 */
}

/* 兼容性样式：确保所有包含侧边栏的列都有固定宽度 */
.container-fluid .row .col-md-2:has(.admin-sidebar-card),
.container-fluid .row .col-md-3:has(.admin-sidebar-card),
.container-fluid .row .col-md-2:has(.card .list-group),
.container-fluid .row .col-md-3:has(.card .list-group) {
    min-width: 280px;
    max-width: 300px;
    flex: 0 0 280px !important;
}

.admin-sidebar-card .list-group-item-action {
    transition: all 0.2s ease-in-out;
    border: none;
    padding: 0.75rem 1rem;
    white-space: nowrap; /* 防止文字换行 */
    overflow: hidden;
    text-overflow: ellipsis;
}

.admin-sidebar-card .list-group-item-action:hover {
    background-color: #f8f9fa !important;
    color: #495057;
    transform: translateX(2px);
}

.admin-sidebar-card .list-group-item-action.active {
    background-color: #007bff !important;
    color: white !important;
    border-color: #007bff;
}

.admin-sidebar-card .list-group-item-action.active i {
    color: white !important;
}


/* 激活状态下的未读通知徽章样式 */
.admin-sidebar-card .list-group-item-action.active .badge.bg-danger {
    background-color: rgba(255, 255, 255, 0.95) !important;
    color: #dc3545 !important;
    border: 1px solid #dc3545;
}

.admin-sidebar-header {
    background-color: #f8f9fa !important;
    border: none;
    font-size: 0.75rem;
}


.admin-sidebar-card .list-group-item i {
    width: 18px; /* 稍微增加图标宽度 */
    text-align: center;
    flex-shrink: 0; /* 防止图标被压缩 */
}

.admin-sidebar-card .list-group-item span {
    flex: 1; /* 让文字占据剩余空间 */
    min-width: 0; /* 允许文字区域收缩 */
}

/* 调整主内容区域，适应固定宽度的侧边栏 */
.container-fluid .row .col-md-9,
.container-fluid .row .col-md-10 {
    flex: 1; /* 主内容区域填满剩余空间 */
    min-width: 0; /* 允许内容区域收缩 */
}

/* 管理后台卡片样式 */
.admin-stats-cards .admin-stat-card {
    height: 140px;
    transition: all 0.3s ease;
}

.admin-stats-cards .admin-stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.admin-action-cards .admin-action-card {
    height: 220px;
    transition: all 0.3s ease;
}

.admin-action-cards .admin-action-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.admin-action-cards .card-body {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}

.admin-action-cards .card-text {
    flex: 1;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.admin-action-cards .d-flex {
    margin-top: auto;
}

/* 统一卡片header样式 */
.admin-action-cards .card-header h5 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.admin-action-cards .card-header h5 i {
    font-size: 1rem;
}

/* 响应式布局优化 - 统计卡片 */
@media (min-width: 1200px) {
    .admin-stats-cards .col-xl-2 {
        flex: 0 0 20%;
        max-width: 20%;
    }
}

@media (max-width: 1199px) and (min-width: 992px) {
    .admin-stats-cards .col-lg-3 {
        flex: 0 0 25%;
        max-width: 25%;
    }
}

@media (max-width: 991px) and (min-width: 768px) {
    .admin-stats-cards .col-md-4 {
        flex: 0 0 33.333333%;
        max-width: 33.333333%;
    }
    
    .admin-action-cards .col-lg-6 {
        width: 100%;
        flex: 0 0 100%;
    }
    
    .admin-action-cards .admin-action-card {
        height: auto;
        min-height: 180px;
    }
}

@media (max-width: 767px) {
    .admin-stats-cards .col-sm-6 {
        flex: 0 0 50%;
        max-width: 50%;
    }
}

@media (max-width: 575px) {
    .admin-stats-cards [class*="col-"] {
        flex: 0 0 100%;
        max-width: 100%;
    }
    
    .admin-stats-cards .admin-stat-card {
        height: auto;
        min-height: 120px;
    }
}

/* 响应式适配 */
@media (max-width: 768px) {
    .admin-sidebar-card.sticky-top {
        position: relative !important;
        top: auto !important;
    }
    
    .container-fluid .row .col-md-2,
    .container-fluid .row .col-md-3 {
        min-width: auto;
        max-width: none;
        flex: none !important;
    }
    
    .container-fluid .row .col-md-9,
    .container-fluid .row .col-md-10 {
        flex: none;
    }
}

/* 知识星球权限申请未读通知的红色圆形样式 */
.unread-count-badge {
    min-width: 20px !important;
    height: 20px !important;
    border-radius: 50% !important; /* 完全圆形 */
    display: inline-flex !important; /* 改为inline-flex以适应不同布局 */
    align-items: center !important;
    justify-content: center !important;
    font-size: 11px !important;
    font-weight: 700 !important;
    padding: 0 !important;
    line-height: 1 !important;
    background-color: #dc3545 !important; /* 红色背景 */
    color: white !important;
    border: 1px solid #ffffff !important; /* 细一点的白色边框 */
    box-shadow: 0 2px 4px rgba(220, 53, 69, 0.3) !important; /* 红色阴影 */
    position: relative !important;
}

/* 激活状态下的圆形徽章样式调整 */
.admin-sidebar-card .list-group-item-action.active .unread-count-badge {
    background-color: #dc3545 !important; /* 保持红色 */
    color: white !important;
    border: 2px solid #dc3545 !important;
    box-shadow: 0 2px 6px rgba(220, 53, 69, 0.4) !important;
}

/* 悬停效果 */
.admin-sidebar-card .list-group-item-action:hover .unread-count-badge {
    transform: scale(1.1) !important;
    transition: transform 0.2s ease !important;
    box-shadow: 0 3px 8px rgba(220, 53, 69, 0.5) !important;
}

/* 导航栏中的特殊样式 */
.navbar .unread-count-badge {
    vertical-align: middle !important;
    margin-left: 4px !important;
}

/* 下拉菜单中的特殊样式 */
.dropdown-menu .unread-count-badge {
    margin-left: 8px !important;
    margin-right: 4px !important;
}

/* 确保在不同屏幕尺寸下都保持圆形 */
@media (max-width: 768px) {
    .unread-count-badge {
        min-width: 18px !important;
        height: 18px !important;
        font-size: 10px !important;
    }
}

/* 动画效果：当有新通知时的脉冲效果 */
@keyframes pulse-red {
    0% {
        transform: scale(1);
        box-shadow: 0 2px 4px rgba(220, 53, 69, 0.3);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 3px 6px rgba(220, 53, 69, 0.5);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 2px 4px rgba(220, 53, 69, 0.3);
    }
}

.unread-count-badge {
    animation: pulse-red 2s infinite !important;
}

/* 数据集复选框样式 */
.dataset-checkbox {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 4px;
    backdrop-filter: blur(5px);
    z-index: 5;
}

.dataset-checkbox .form-check-input {
    width: 18px;
    height: 18px;
    border-radius: 4px;
    border: 2px solid #667eea;
    background-color: transparent;
}

.dataset-checkbox .form-check-input:checked {
    background-color: #667eea;
    border-color: #667eea;
}

.dataset-checkbox .form-check-input:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

/* 管理员控制区域样式 */
.admin-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.batch-actions {
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s ease;
}

.batch-actions:not([style*="display: none"]) {
    opacity: 1;
    transform: translateX(0);
}

/* 选中状态的数据集卡片高亮 */
.dataset-card:has(.dataset-select:checked) {
    border-color: #667eea !important;
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.25), 0 8px 25px rgba(0, 0, 0, 0.15) !important;
    transform: translateY(-3px);
}

/* 删除确认模态框样式 */
.modal-header {
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.modal-header .btn-close {
    filter: invert(1);
}

/* 批量操作按钮样式 */
.btn-danger {
    background: linear-gradient(90deg, #e53e3e 0%, #c53030 100%);
    border: none;
    color: white;
}

.btn-danger:hover {
    background: linear-gradient(90deg, #c53030 0%, #9c2626 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(197, 48, 48, 0.4);
}