/**
 * 单页文章侧边栏样式
 * Single Page Article Sidebar Styles
 */

/* 重置和基础样式 */
.single-page-container,
.single-page-container * {
    box-sizing: border-box;
}

/* 确保不受全局样式影响 */
.single-page-container {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.single-page-container a {
    color: inherit;
    text-decoration: none;
}

.single-page-container img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 主容器布局 */
.single-page-container {
    display: flex;
    max-width: 1400px;
    margin: 0 auto;
    gap: 40px;
    padding: 20px;
    min-height: calc(100vh - 200px);
    position: relative;
    z-index: 1;
    background: transparent;
    align-items: flex-start;
}

/* 左侧侧边栏 */
.sidebar-left {
    width: 20%;
    flex-shrink: 0;
    border-radius: 12px;
    padding: 24px;
    height: fit-content;
    position: sticky;
    top: 20px;
    min-width: 280px;
}

/* 侧边栏头部 */
.sidebar-header {
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid #e5e7eb;
}

.sidebar-left .back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #6b7280 !important;
    text-decoration: none !important;
    font-size: 14px;
    font-weight: 500 !important;
    transition: color 0.3s ease;
}

.sidebar-left .back-link:hover {
    color: #3b82f6 !important;
    font-weight: 500 !important;
}

.back-link svg {
    transition: transform 0.3s ease;
}

.back-link:hover svg {
    transform: translateX(-2px);
}

/* 文章列表容器 */
.recent-articles {
    display: flex;
    flex-direction: column;
    gap: 6px;
    width: 100%;
    overflow: hidden;
}

/* 文章项目 */
.sidebar-left .article-item {
    display: block;
    padding: 8px;
    border-radius: 6px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid transparent;
    width: 100%;
    box-sizing: border-box;
}

.sidebar-left .article-item:hover {
    background: #f8fafc;
    border-color: #e2e8f0;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

/* 文章内容 */
.sidebar-left .article-content {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.sidebar-left .article-title {
    margin: 0;
    font-size: 14px;
    font-weight: 500;
    line-height: 1.4;
    color: #333;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    word-break: break-word;
}

.sidebar-left .article-title a {
    color: inherit !important;
    text-decoration: none !important;
    transition: color 0.3s ease;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    font-weight: inherit !important;
}

.sidebar-left .article-title a:hover {
    color: #3b82f6 !important;
    font-weight: 600 !important;
}

.sidebar-left .article-date {
    margin: 0;
    font-size: 12px;
    color: #666;
    font-weight: 400;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 右侧主要内容区域 */
.main-content {
    width: 80%;
    flex: 0 0 80%;
    min-width: 0;
}

.main-content .article-c {
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    padding: 40px;
    width: 100%;
    box-sizing: border-box;
}

.main-content .article-content {
    padding: 70px;
    width: 100%;
    box-sizing: border-box;
}

/* 文章头部 */
.article-header {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #e5e7eb;
}

.article-header .article-title {
    margin: 0 0 15px 0;
    font-size: 28px;
    font-weight: 700;
    line-height: 1.3;
    color: #1f2937;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.article-meta .article-time {
    margin: 0;
    font-size: 14px;
    color: #6b7280;
    font-weight: 400;
}

.article-categories {
    font-size: 14px;
    color: #6b7280;
}

.article-categories a {
    color: #3b82f6;
    text-decoration: none;
    transition: color 0.2s ease;
}

.article-categories a:hover {
    color: #1d4ed8;
}

/* 文章主体内容 */
.article-body {
    line-height: 1.8;
    color: #374151;
}

/* 文章底部 */
.article-footer {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid #e5e7eb;
}

.article-tags {
    font-size: 14px;
    color: #6b7280;
}

.tags-label {
    font-weight: 500;
    margin-right: 8px;
}

.article-tags a {
    color: #3b82f6;
    text-decoration: none;
    transition: color 0.2s ease;
}

.article-tags a:hover {
    color: #1d4ed8;
}

/* 无障碍访问 */
.screen-reader-text {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* 无文章提示 */
.no-articles {
    text-align: center;
    color: #6b7280;
    font-style: italic;
    padding: 20px;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .single-page-container {
        gap: 30px;
        padding: 15px;
    }
    
  .sidebar-left {
        width: 25%;
        min-width: 260px;
        top: auto;
    }
    
    .sidebar-left .article-image {
        width: 50px;
        height: 38px;
    }
    
    .sidebar-left .article-content {
        min-height: 38px;
    }
    
    .sidebar-left .article-title {
        font-size: 12px;
        line-height: 1.2;
    }
    
    .sidebar-left .article-date {
        font-size: 10px;
    }
    
    .main-content {
        width: 75%;
        flex: 0 0 75%;
    }
    
    .main-content .article-c {
        padding: 30px;
    }
}

@media (max-width: 991.98px) {
    .single-page-container {
        flex-direction: column;
        gap: 20px;
        padding: 15px;
        min-height: auto;
    }
    
    .sidebar-left {
        width: 100%;
        position: static;
        order: 2;
        margin-top: 20px;
        top: auto;
    }
    
    .main-content {
        order: 1;
        width: 100%;
    }
    
    .main-content .article-content {
        width: 100%;
        padding: 25px;
    }
    
    .article-header .article-title {
        font-size: 24px;
    }
    
    .article-meta {
        gap: 15px;
    }
    
    .recent-articles {
        gap: 8px;
    }
    
    .sidebar-left .article-item {
        gap: 6px;
        padding: 6px;
    }
    
    .sidebar-left .article-image {
        width: 45px;
        height: 34px;
    }
    
    .sidebar-left .article-content {
        min-height: 34px;
    }
    
    .sidebar-left .article-title {
        font-size: 11px;
        line-height: 1.2;
        -webkit-line-clamp: 1;
    }
    
    .sidebar-left .article-date {
        font-size: 9px;
    }
    
    .recent-articles {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 12px;
    }
    
    .sidebar-left .article-item {
        flex-direction: column;
        text-align: center;
    }
    
    .sidebar-left .article-image {
        width: 100%;
        height: 120px;
        margin-bottom: 8px;
    }
    
    .sidebar-left .article-content {
        min-height: auto;
    }
}

@media (max-width: 576px) {
    .single-page-container {
        padding: 15px;
        min-height: auto;
    }
    
    .sidebar-left {
        width: 100%;
        position: static;
        margin-bottom: 20px;
        padding: 15px;
    }
    
    .main-content {
        width: 100%;
        padding: 20px;
    }
    
    .main-content .article-content {
        width: 100%;
        padding: 20px;
    }
    
    .article-header {
        margin-bottom: 20px;
        padding-bottom: 15px;
    }
    
    .article-header .article-title {
        font-size: 20px;
        line-height: 1.4;
    }
    
    .article-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .article-footer {
        margin-top: 30px;
        padding-top: 15px;
    }
    
    .recent-articles {
        grid-template-columns: 1fr;
    }
    
    .sidebar-left .article-title {
        font-size: 13px;
    }
}

/* 加载动画 */
.sidebar-left .article-item {
    opacity: 0;
    transform: translateY(10px);
    animation: fadeInUp 0.5s ease forwards;
}

.sidebar-left .article-item:nth-child(1) { animation-delay: 0.1s; }
.sidebar-left .article-item:nth-child(2) { animation-delay: 0.2s; }
.sidebar-left .article-item:nth-child(3) { animation-delay: 0.3s; }
.sidebar-left .article-item:nth-child(4) { animation-delay: 0.4s; }
.sidebar-left .article-item:nth-child(5) { animation-delay: 0.5s; }
.sidebar-left .article-item:nth-child(6) { animation-delay: 0.6s; }

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 滚动条样式 */
.sidebar-left::-webkit-scrollbar {
    width: 4px;
}

.sidebar-left::-webkit-scrollbar-track {
    background: #f1f5f9;
    border-radius: 2px;
}

.sidebar-left::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 2px;
}

.sidebar-left::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* 搜索功能兼容性 */
.single-page-container {
    isolation: isolate;
}

/* 确保不与搜索模块冲突 */
.news-search-section + .single-page-container,
.search-results + .single-page-container {
    margin-top: 30px;
    clear: both;
    background: #fff;
}

/* 搜索模块后的容器样式重置 */
.news-search-section + .single-page-container {
    position: relative;
    z-index: auto;
}

/* 防止与其他模块的样式冲突 */
.single-page-container .article-item {
    position: relative;
    z-index: auto;
}

.single-page-container .article-item:hover {
    z-index: 1;
}

/* 确保容器不会溢出 */
.single-page-container {
    overflow-x: hidden;
}

/* 修复可能的浮动问题 */
.single-page-container::after {
    content: "";
    display: table;
    clear: both;
}

/* 确保主内容区域的标题样式 */
.main-content .article-c h1 {
    margin-top: 0;
    margin-bottom: 20px;
    font-size: 28px;
    font-weight: 700;
    line-height: 1.3;
    color: #1f2937;
}

.main-content .article-c .article-time {
    margin-bottom: 30px;
    color: #6b7280;
    font-size: 14px;
}