/* 文献资源容器样式 */
.literature-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
    background-color: #f8fafc;
    padding: 0;
}

/* 文献资源通知栏样式 */
.literature-notification {
    display: flex;
    align-items: center;
    background-color: #f0f9ff;
    border: 1px solid #bae6fd;
    border-radius: 8px;
    padding: 10px 15px;
    margin-bottom: 20px;
}

.literature-notification-icon {
    color: #0ea5e9;
    font-size: 18px;
    margin-right: 12px;
}

.literature-notification-content {
    font-size: 14px;
    color: #0369a1;
    line-height: 1.5;
}

/* 文献资源头部样式 */
.literature-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding: 0 0 16px 0;
    border-bottom: 1px solid #e2e8f0;
}

.literature-title {
    font-size: 18px;
    font-weight: 600;
    color: #1e293b;
}

.literature-actions {
    display: flex;
    gap: 16px;
}

.literature-view-toggle {
    display: flex;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid #e2e8f0;
}

.literature-view-btn {
    background: #fff;
    border: none;
    padding: 8px 16px;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s;
}

.literature-view-btn:hover {
    background-color: #f8fafc;
}

.literature-view-btn.active {
    background-color: #6366f1;
    color: white;
}

.literature-search-container {
    position: relative;
}

.literature-search {
    display: flex;
    align-items: center;
    background-color: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 0 12px;
    height: 38px;
}

.literature-search i {
    color: #64748b;
    margin-right: 8px;
}

.literature-search input {
    border: none;
    outline: none;
    background: transparent;
    width: 220px;
    font-size: 14px;
}

/* 文献资源内容区域 */
.literature-content {
    flex: 1;
    overflow-y: auto;
    padding: 0;
    position: relative;
}

/* 文献资源面包屑导航 */
.literature-breadcrumb {
    display: flex;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
    padding: 0;
    background-color: transparent;
}

.literature-breadcrumb-item {
    display: flex;
    align-items: center;
    font-size: 14px;
    color: #64748b;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s;
}

.literature-breadcrumb-item:hover {
    background-color: #f1f5f9;
    color: #334155;
}

.literature-breadcrumb-item.active {
    font-weight: 600;
    color: #334155;
}

.literature-breadcrumb-separator {
    margin: 0 4px;
    color: #94a3b8;
}

/* 文献资源网格布局 */
.literature-grid {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* 文献资源文件夹部分 */
.literature-folder-section {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.literature-section-title {
    font-size: 16px;
    font-weight: 600;
    color: #334155;
    display: flex;
    align-items: center;
    gap: 8px;
}

.literature-section-title i {
    color: #6366f1;
}

.literature-folder-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    padding: 0;
}

.literature-folder-item {
    background: white;
    border-radius: 10px;
    padding: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.03);
    border: 1px solid #f0f3fa;
    transition: all 0.2s ease;
    position: relative;
    width: calc(25% - 9px); /* 改为四列显示 */
    box-sizing: border-box;
    max-width: 100%;
    min-width: 180px; /* 减小最小宽度 */
    flex: 0 1 auto; /* 允许文件夹项收缩但不自动增长 */
}

.literature-folder-item:hover {
    box-shadow: 0 4px 12px rgba(56, 189, 248, 0.08);
    border-color: #e0f2fe;
    transform: translateY(-1px);
}

@media (max-width: 1200px) {
    .literature-folder-item {
        width: calc(25% - 9px); /* 大屏幕显示四列 */
        min-width: 160px;
    }
}

@media (max-width: 992px) {
    .literature-folder-item {
        width: calc(33.33% - 8px); /* 中等屏幕显示三列 */
        min-width: 150px;
    }
}

@media (max-width: 768px) {
    .literature-folder-item {
        width: calc(50% - 6px); /* 平板显示两列 */
        min-width: 140px;
    }
}

.literature-folder-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: #f0f9ff;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #38bdf8;
    font-size: 18px;
    flex-shrink: 0;
}

.literature-folder-info {
    flex: 1;
    overflow: hidden;
}

.literature-folder-name {
    font-weight: 500;
    font-size: 15px;
    color: #333;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 文献资源文件夹元数据样式 */
.literature-folder-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 12px;
    color: #64748b;
    margin-top: 4px;
}

.literature-folder-meta .folder-count,
.literature-folder-meta .article-count,
.literature-folder-meta .empty-folder {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 2px 6px;
    border-radius: 4px;
    background-color: #f8fafc;
}

.literature-folder-meta .folder-count {
    color: #0369a1;
    background-color: #f0f9ff;
}

.literature-folder-meta .article-count {
    color: #0f766e;
    background-color: #ecfdf5;
}

.literature-folder-meta .empty-folder {
    color: #94a3b8;
    background-color: #f1f5f9;
}

.literature-folder-actions {
    display: flex;
    gap: 8px;
}

.literature-folder-navigate, 
.literature-folder-select {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    background: #f8fafd;
    border: 1px solid #e9edf5;
    color: #64748b;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.literature-folder-navigate:hover {
    background: #f0f9ff;
    color: #38bdf8;
    border-color: #bae6fd;
}

.literature-folder-select:hover {
    background: #f5f3ff;
    color: #8b5cf6;
    border-color: #ddd6fe;
}

.literature-folder-select.selected {
    background: #8b5cf6;
    color: white;
    border-color: #7c3aed;
}

/* 文献资源文档部分 */
.literature-document-section {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.literature-document-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.literature-document-item {
    background: white;
    border-radius: 10px;
    padding: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.03);
    border: 1px solid #f0f3fa;
    transition: all 0.2s ease;
    position: relative;
    box-sizing: border-box;
    max-width: 100%;
}

.literature-document-item:hover {
    box-shadow: 0 4px 12px rgba(99,102,241,0.08);
    border-color: #e4e7ff;
    transform: translateY(-1px);
}

.literature-document-item.selected {
    background: #f5f3ff;
    border-color: #c4b5fd;
}

.literature-document-checkbox {
    position: relative;
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.literature-document-checkbox input[type="checkbox"] {
    opacity: 0;
    position: absolute;
    width: 100%;
    height: 100%;
    cursor: pointer;
    z-index: 2;
}

.literature-document-checkbox .checkmark {
    position: absolute;
    top: 0;
    left: 0;
    width: 20px;
    height: 20px;
    background-color: #fff;
    border: 1px solid #d1d5db;
    border-radius: 4px;
    transition: all 0.2s;
}

.literature-document-checkbox input[type="checkbox"]:checked + .checkmark {
    background-color: #8b5cf6;
    border-color: #7c3aed;
}

.literature-document-checkbox .checkmark:after {
    content: "";
    position: absolute;
    display: none;
    left: 7px;
    top: 3px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.literature-document-checkbox input[type="checkbox"]:checked + .checkmark:after {
    display: block;
}

.literature-document-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: #f5f3ff;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #8b5cf6;
    font-size: 16px;
    flex-shrink: 0;
}

.literature-document-info {
    flex: 1;
    overflow: hidden;
}

.literature-document-title {
    font-weight: 500;
    font-size: 14px;
    color: #333;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.literature-document-meta {
    font-size: 12px;
    color: #94a3b8;
}

/* 文献资源分隔线 */
.literature-section-divider {
    height: 1px;
    background-color: #e2e8f0;
    margin: 8px 0;
}

/* 文献资源加载更多按钮 */
.literature-loadmore {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8f9fa;
    border: 1px dashed #d1d5db;
    border-radius: 8px;
    padding: 15px;
    margin: 20px auto;
    width: 100%;
    max-width: 300px;
    cursor: pointer;
    transition: all 0.2s;
    color: #6366f1;
    font-weight: 500;
    gap: 8px;
}

.literature-loadmore:hover {
    background: #f0f4ff;
    border-color: #c7d2fe;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.1);
    transform: translateY(-2px);
}

.literature-loadmore.loading {
    pointer-events: none;
    opacity: 0.7;
    background: #f0f4ff;
    animation: pulse-button 1.5s infinite;
}

@keyframes pulse-button {
    0% {
        opacity: 0.7;
    }
    50% {
        opacity: 0.9;
    }
    100% {
        opacity: 0.7;
    }
}

.literature-loadmore .fa-spinner {
    animation: spin 1s linear infinite;
}

/* 文献资源加载中状态 */
.literature-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 0;
    color: #64748b;
}

.literature-loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #e2e8f0;
    border-top-color: #6366f1;
    border-radius: 50%;
    animation: literature-spin 1s linear infinite;
    margin-bottom: 16px;
}

@keyframes literature-spin {
    to {
        transform: rotate(360deg);
    }
}

.literature-loading-text {
    font-size: 16px;
    color: #64748b;
}

/* 文献资源加载更多的loading */
.literature-loading-more {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

/* 文献资源空状态 */
.literature-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 0;
    color: #64748b;
    text-align: center;
}

.literature-empty-icon {
    font-size: 48px;
    color: #cbd5e1;
    margin-bottom: 16px;
}

.literature-empty-text {
    font-size: 16px;
    font-weight: 500;
    color: #334155;
    margin-bottom: 8px;
}

.literature-empty-subtext {
    font-size: 14px;
    color: #64748b;
}

.literature-empty-subtext a {
    color: #6366f1;
    text-decoration: none;
}

/* 文献资源错误状态 */
.literature-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 0;
    color: #ef4444;
    text-align: center;
}

.literature-error-icon {
    font-size: 48px;
    color: #fca5a5;
    margin-bottom: 16px;
}

.literature-error-text {
    font-size: 16px;
    font-weight: 500;
    color: #ef4444;
    margin-bottom: 8px;
}

.literature-error-subtext {
    font-size: 14px;
    color: #64748b;
    margin-bottom: 16px;
}

.literature-retry-btn {
    background-color: #ef4444;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 8px 16px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.literature-retry-btn:hover {
    background-color: #dc2626;
}

/* 已选择文献容器 */
.selected-literature {
    background: #f8fafd;
    border-radius: 16px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
    border: 1px solid #e9edf5;
    overflow: hidden;
    transition: all 0.3s ease;
    margin-top: 20px;
}

/* 添加折叠和展开相关的样式 */
.selected-literature.visible .selected-literature-grid {
    max-height: 240px;
    padding: 16px;
    opacity: 1;
    overflow-y: auto;
}

.selected-literature:not(.visible) .selected-literature-grid {
    max-height: 0;
    opacity: 0;
    padding: 0;
    margin: 0;
    transition: all 0.3s ease-out;
    overflow: hidden;
}

/* 折叠按钮旋转动画 */
.selected-literature.visible #btnToggleLiteratureSelection i {
    transform: rotate(0deg);
    transition: transform 0.3s ease;
}

.selected-literature:not(.visible) #btnToggleLiteratureSelection i {
    transform: rotate(180deg);
    transition: transform 0.3s ease;
}

.selected-literature-header {
    background: linear-gradient(135deg, #f9faff 0%, #f4f6ff 100%);
    padding: 14px 18px;
    border-bottom: 1px solid #eaeff8;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer; /* 添加鼠标指针样式 */
}

.selected-literature-title {
    font-weight: 600;
    font-size: 16px;
    color: #3b4cca;
    display: flex;
    align-items: center;
    gap: 8px;
}

.selected-literature-title:before {
    content: '';
    display: block;
    width: 4px;
    height: 16px;
    background: #6366f1;
    border-radius: 2px;
}

.selected-count {
    background: #6366f1;
    color: white;
    border-radius: 12px;
    padding: 2px 8px;
    font-size: 13px;
    font-weight: 500;
}

.selected-literature-grid {
    padding: 16px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 12px;
    max-height: 240px;
    overflow-y: auto;
}

.selected-literature-item {
    background: white;
    border-radius: 10px;
    padding: 12px 14px;
    display: flex;
    align-items: center;
    gap: 10px;
    position: relative;
    box-shadow: 0 2px 8px rgba(0,0,0,0.03);
    border: 1px solid #f0f3fa;
    transition: all 0.2s ease;
}

.selected-literature-item:hover {
    box-shadow: 0 4px 12px rgba(99,102,241,0.08);
    border-color: #e4e7ff;
    transform: translateY(-1px);
}

.selected-literature-item.network {
    background: linear-gradient(to right, #fcfdff, #f8faff);
    border-left: 3px solid #6366f1;
}

.selected-literature-item.folder {
    background: linear-gradient(to right, #fcfdff, #f9fbff);
    border-left: 3px solid #38bdf8;
}

.selected-literature-item-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: #f4f6ff;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6366f1;
    font-size: 14px;
    flex-shrink: 0;
}

.selected-literature-item.folder .selected-literature-item-icon {
    color: #38bdf8;
    background: #f0f9ff;
}

.selected-literature-item-title {
    flex: 1;
    font-size: 14px;
    color: #333;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    line-height: 1.4;
}

.selected-literature-item-meta {
    position: absolute;
    top: 8px;
    right: 32px;
}

.network-ref-detail-btn {
    background: #f4f6ff;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6366f1;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.network-ref-detail-btn:hover {
    background: #e4e7ff;
    color: #3b4cca;
    transform: scale(1.05);
}

.selected-literature-item-remove {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #f8f9fc;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #aaa;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
    position: absolute;
    top: 8px;
    right: 8px;
}

.selected-literature-item-remove:hover {
    background: #fee2e2;
    color: #ef4444;
}

.selected-literature-empty {
    padding: 30px 0;
    text-align: center;
    color: #94a3b8;
    font-size: 14px;
    width: 100%;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .literature-header {
        flex-direction: column;
        align-items: stretch;
        gap: 16px;
    }
    
    .literature-actions {
        flex-direction: column;
        gap: 12px;
    }
    
    .literature-search input {
        width: 100%;
    }
    
    .literature-folder-grid,
    .literature-document-grid {
        grid-template-columns: 1fr;
    }
    
    .selected-literature-grid {
        grid-template-columns: 1fr;
    }
}

/* 响应式优化 */
@media (max-width: 900px) {
    .literature-document-grid {
        gap: 10px;
    }
    
    .literature-document-item {
        padding: 10px;
        gap: 10px;
    }
    
    .literature-folder-grid {
        gap: 10px;
    }
    .literature-folder-item {
        width: calc(50% - 5px);
    }
}

@media (max-width: 600px) {
    .literature-document-grid {
        display: grid;
        grid-template-columns: repeat(1, 1fr);
        gap: 8px;
    }
    
    .literature-document-item {
        padding: 10px;
        border-radius: 8px;
        gap: 8px;
        width: 100%;
        flex-direction: row;
        align-items: center;
    }
    
    .literature-document-item:last-child {
        margin-bottom: 0;
    }
    
    .literature-document-icon {
        width: 32px;
        height: 32px;
        font-size: 16px;
        border-radius: 6px;
        flex-shrink: 0;
    }
    
    .literature-document-title {
        font-size: 14px;
        line-height: 1.3;
        margin-bottom: 2px;
        -webkit-line-clamp: 2;
    }
    
    .literature-document-info {
        display: flex;
        flex-direction: column;
        justify-content: center;
        overflow: hidden;
        flex: 1;
    }
    
    .literature-document-desc {
        font-size: 12px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        color: #64748b;
    }
    
    .literature-document-checkbox {
        transform: scale(0.9);
        margin-right: 0;
    }
    
    .literature-folder-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    
    .literature-folder-item {
        width: 100%;
        min-width: 0; /* 移动端不需要最小宽度 */
        padding: 10px;
        border-radius: 8px;
        gap: 8px;
        flex-direction: row;
        align-items: center;
        margin-bottom: 0;
    }
    
    .literature-folder-item:last-child {
        margin-bottom: 0;
    }
    
    .literature-folder-icon {
        width: 32px;
        height: 32px;
        font-size: 16px;
        border-radius: 6px;
        flex-shrink: 0;
    }
    
    .literature-folder-name {
        font-size: 14px;
        line-height: 1.3;
        margin-bottom: 2px;
    }
    
    .literature-folder-info {
        display: flex;
        flex-direction: column;
        justify-content: center;
        overflow: hidden;
        flex: 1;
    }
    
    .literature-folder-count {
        font-size: 12px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        color: #64748b;
    }
    
    .literature-folder-actions {
        display: flex;
        gap: 6px;
    }
    
    .literature-folder-enter,
    .literature-folder-select {
        width: 28px;
        height: 28px;
        font-size: 14px;
        border-radius: 6px;
    }
    
    .literature-folder-select.selected {
        background: #6366f1;
    }
    
    .selected-literature-grid {
        grid-template-columns: repeat(1, 1fr);
    }
    
    .selected-literature-item {
        padding: 10px;
    }
    
    .literature-folder-grid,
    .literature-document-grid {
        margin-bottom: 16px;
    }
}

@media (max-width: 375px) {
    .literature-folder-grid {
        grid-template-columns: repeat(1, 1fr);
    }
    
    .literature-folder-item {
        width: 100%;
    }
    
    .literature-document-item {
        padding: 8px;
    }
    
    .literature-folder-icon,
    .literature-document-icon {
        width: 28px;
        height: 28px;
        font-size: 14px;
    }
    
    .literature-folder-name,
    .literature-document-title {
        font-size: 13px;
    }
    
    .literature-folder-meta,
    .literature-document-meta {
        font-size: 11px;
    }
}

/* --- 返回上一级按钮美化 --- */
.literature-folder-back {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: linear-gradient(90deg, #6366f1 60%, #818cf8 100%);
    color: #fff;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    padding: 8px 22px 8px 16px;
    font-size: 15px;
    box-shadow: 0 2px 8px rgba(99,102,241,0.09);
    margin-bottom: 18px;
    margin-left: 2px;
    cursor: pointer;
    transition: background 0.18s, box-shadow 0.18s, color 0.18s, transform 0.16s;
    outline: none;
}
.literature-folder-back i {
    font-size: 18px;
    margin-right: 2px;
}
.literature-folder-back:hover {
    background: linear-gradient(90deg, #818cf8 0%, #6366f1 100%);
    color: #fff;
    box-shadow: 0 4px 16px rgba(99,102,241,0.16);
    transform: translateY(-2px) scale(1.04);
}
@media (max-width: 600px) {
  .literature-folder-back {
    padding: 6px 12px 6px 10px;
    font-size: 13px;
    margin-bottom: 10px;
  }
  .literature-folder-back i {
    font-size: 15px;
  }
}

/* 网络文献样式 */
.literature-network-list { 
    margin: 32px 0; 
}

.literature-network-item { 
    background: #fff; 
    border-radius: 18px; 
    box-shadow: 0 6px 32px 0 rgba(99,102,241,0.08), 0 1.5px 6px 0 rgba(0,0,0,0.03); 
    margin-bottom: 36px; 
    padding: 28px 32px 24px 32px; 
    position: relative; 
    border: 1.5px solid #f2f3f7;
    transition: all .25s ease;
    display: flex;
    flex-direction: column;
}

.literature-network-item:hover {
    box-shadow: 0 8px 40px 0 rgba(99,102,241,0.12), 0 2px 10px 0 rgba(0,0,0,0.05);
    border-color: #e4e7ff;
    transform: translateY(-2px);
}

.literature-network-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 18px;
    gap: 16px;
}

.literature-network-title { 
    font-weight: 700; 
    font-size: 20px; 
    color: #232946; 
    line-height: 1.35;
    letter-spacing: 0.5px;
    flex: 1;
    position: relative;
    padding-left: 16px;
}

.literature-network-title:before {
    content: '';
    position: absolute;
    left: 0;
    top: 4px;
    bottom: 4px;
    width: 4px;
    background: linear-gradient(to bottom, #6366f1, #818cf8);
    border-radius: 2px;
}

.literature-network-year {
    background: #e8eafc;
    padding: 5px 14px;
    border-radius: 16px;
    color: #6366f1;
    font-weight: 500;
    font-size: 15px;
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    flex-shrink: 0;
}

.literature-network-abstract-container {
    margin-bottom: 18px;
    position: relative;
}

.literature-network-toggle { 
    color: #6366f1; 
    cursor: pointer; 
    font-size: 15px; 
    display: inline-flex;
    align-items: center;
    width: auto;
    margin-bottom: 10px;
    background: #f4f6fb;
    border-radius: 6px;
    padding: 7px 18px 7px 12px;
    border: none;
    font-weight: 500;
    transition: all .2s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.literature-network-toggle:hover {
    background: #e4e7ff;
    transform: translateY(-1px);
    box-shadow: 0 2px 5px rgba(99,102,241,0.15);
}

.literature-network-toggle i {
    margin-right: 8px;
    font-size: 16px;
    transition: transform .2s;
}

.literature-network-toggle.expanded i {
    transform: rotate(180deg);
}

.literature-network-abstract { 
    color: #444; 
    font-size: 16px; 
    line-height: 1.85; 
    position: relative; 
    margin-bottom: 8px;
    text-align: justify;
    display: none;
    background: #f8f9fb;
    border-radius: 10px;
    padding: 18px 20px 14px 20px;
    font-weight: 400;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.03);
}

.literature-network-abstract.expanded { 
    display: block;
    animation: fadeInDown .25s ease;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.literature-network-citation-container { 
    margin-bottom: 20px;
    background: #f8f9fb;
    border-radius: 10px;
    padding: 16px 20px;
    position: relative;
    overflow: hidden;
}

.literature-network-citation-container:before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(to bottom, #6366f1, #818cf8);
}

.literature-network-citation-header {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
    font-size: 15px;
    font-weight: 500;
    color: #232946;
}

.literature-network-citation-label {
    margin-right: 12px;
    font-weight: 600;
    color: #3b4cca;
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.literature-network-citation-label:before {
    content: '\f0c1';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    font-size: 14px;
}

.literature-network-citation-header select {
    padding: 6px 16px;
    border-radius: 6px;
    border: 1.5px solid #e0e3ef;
    color: #232946;
    font-size: 15px;
    background: #fff;
    font-weight: 500;
    outline: none;
    transition: border-color .2s, box-shadow .2s;
    cursor: pointer;
}

.literature-network-citation-header select:hover {
    border-color: #c7d2fe;
}

.literature-network-citation-header select:focus {
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.literature-network-citation { 
    display: block; 
    color: #3b4cca; 
    font-size: 15px;
    background: #fff;
    padding: 16px 20px;
    border-radius: 8px;
    border-left: 4px solid #6366f1;
    font-family: 'Fira Mono', 'Consolas', 'Menlo', monospace;
    margin-bottom: 2px;
    word-break: break-all;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.literature-network-actions {
    border-top: 1px solid #f0f0f5;
    padding-top: 20px;
    margin-top: 4px;
    border-radius: 0 0 18px 18px;
    background: linear-gradient(to bottom, rgba(248,249,252,0) 0%, rgba(248,249,252,0.5) 100%);
}

.literature-network-hint { 
    background: #f4f6fb; 
    color: #6366f1; 
    border-radius: 8px; 
    padding: 12px 18px; 
    font-size: 15px; 
    margin-top: 12px; 
    margin-bottom: 4px; 
    display: flex; 
    align-items: center; 
    gap: 10px;
    font-weight: 500;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.literature-network-hint-area {
    margin-top: 12px;
    display: none;
}

.network-hint-text {
    background: #f0f9ff;
    color: #0369a1;
    border: 1px solid #bae6fd;
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 14px;
    line-height: 1.5;
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-weight: 500;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.network-hint-text i {
    color: #0ea5e9;
    margin-top: 2px;
    flex-shrink: 0;
}

.literature-network-switches { 
    display: flex; 
    gap: 32px; 
    align-items: center; 
    flex-wrap: wrap;
}

/* 改进开关样式 */
.switch-label {
    position: relative;
    display: inline-flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
    padding: 4px 0;
}

.switch-label input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.switch-slider-ui {
    position: relative;
    display: inline-block;
    width: 38px;
    height: 20px;
    background-color: #e0e0e0;
    border-radius: 20px;
    margin-right: 10px;
    transition: all .3s;
}

.switch-slider-ui:before {
    content: "";
    position: absolute;
    height: 16px;
    width: 16px;
    left: 2px;
    bottom: 2px;
    background-color: white;
    border-radius: 50%;
    transition: all .3s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}

.switch-label:hover .switch-slider-ui {
    background-color: #d0d0d0;
}

.switch-label input:checked + .switch-slider-ui {
    background-color: #6366f1;
}

.switch-label input:checked + .switch-slider-ui:before {
    transform: translateX(18px);
    left: 2px; /* 保持原始left值不变 */
}

.switch-label input:focus + .switch-slider-ui {
    box-shadow: 0 0 0 2px rgba(99,102,241,0.2);
}

.toggle-label {
    font-size: 15px;
    color: #232946;
    font-weight: 500;
    transition: color .2s;
}

.switch-label:hover .toggle-label {
    color: #3b4cca;
}

.switch-label input:checked ~ .toggle-label {
    color: #3b4cca;
}

/* 响应式调整 */
@media (max-width: 900px) {
    .literature-network-item { 
        padding: 22px 24px 20px 24px; 
    }
    .literature-network-header {
        flex-direction: column;
        gap: 10px;
    }
    .literature-network-year {
        align-self: flex-start;
    }
    .literature-network-switches {
        gap: 16px;
    }
}

@media (max-width: 600px) {
    .selected-literature-grid {
        grid-template-columns: 1fr;
        max-height: 200px;
    }
    .selected-literature-item {
        padding: 10px 12px;
    }
    .literature-folder-grid,
    .literature-document-grid {
        grid-template-columns: 1fr;
    }
    .literature-network-item { 
        padding: 18px 16px 16px 16px; 
        border-radius: 14px;
    }
    .literature-network-title { 
        font-size: 18px; 
    }
    .literature-network-year {
        font-size: 13px;
        padding: 4px 12px;
    }
    .literature-network-citation { 
        font-size: 13px; 
        padding: 12px 10px; 
    }
    .literature-network-abstract {
        font-size: 14px;
        padding: 14px 16px;
    }
    .literature-network-toggle {
        font-size: 14px;
    }
    .literature-network-citation-container {
        padding: 12px 14px;
    }
    .literature-network-citation-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    .literature-network-citation-header select {
        width: 100%;
    }
    .literature-network-switches {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
}