/* 模块三：新闻模块
   ========================================
   学术交流平台 - 新闻模块样式
   设计风格：与首页一致的典雅质朴
   ======================================== */

/* ===== 详情页紧凑 Banner ===== */
.news-detail-banner {
    position: relative;
    height: 200px;
    margin-top: 60px;
    overflow: hidden;
}

.news-detail-banner > img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-detail-banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        135deg,
        rgba(61, 52, 39, 0.75) 0%,
        rgba(91, 74, 63, 0.6) 50%,
        rgba(139, 115, 85, 0.4) 100%
    );
}

/* ===== 筛选栏 ===== */
.news-filter-section {
    background: var(--color-white);
    padding: 0 0 20px;
    border-bottom: 1px solid var(--color-border);
}

/* ===== 新闻列表区域 ===== */
.news-list-section {
    padding: 30px 0 60px;
    background: var(--color-primary-light);
}

.news-list-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding: 0 4px;
}

.news-list-count {
    font-size: 14px;
    color: var(--color-text-light);
}

.news-list-count strong {
    color: var(--color-accent-red);
    font-size: 16px;
}

.news-view-toggle {
    display: flex;
    gap: 4px;
}

/* ===== 置顶新闻大卡片 ===== */
.news-featured-card {
    display: flex;
    background: var(--color-white);
    border-radius: 6px;
    border: 2px solid var(--color-primary-dark);
    margin-bottom: 24px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.news-featured-card:hover {
    box-shadow: 0 10px 30px rgba(61, 52, 39, 0.12);
}

.news-featured-img {
    width: 380px;
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
}

.news-featured-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.news-featured-card:hover .news-featured-img img {
    transform: scale(1.05);
}

.news-top-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--color-accent-red);
    color: #FFFFFF;
    font-size: 12px;
    padding: 3px 12px;
    border-radius: 2px;
    font-weight: 600;
    letter-spacing: 1px;
}

.news-top-tag i {
    margin-right: 4px;
}

.news-featured-body {
    flex: 1;
    padding: 24px 28px;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.news-featured-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-dark);
    line-height: 1.5;
    margin: 10px 0 12px;
    letter-spacing: 0.5px;
}

.news-featured-title a {
    color: inherit;
    transition: color 0.3s ease;
}

.news-featured-title a:hover {
    color: var(--color-primary-dark);
}

.news-featured-desc {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.8;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin: 0 0 16px;
}

.news-featured-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 14px;
    border-top: 1px solid var(--color-border);
}

/* ===== 普通新闻卡片 ===== */
.news-card {
    display: flex;
    background: var(--color-white);
    border-radius: 6px;
    border: 1px solid var(--color-border);
    margin-bottom: 18px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.news-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(61, 52, 39, 0.12);
    border-color: var(--color-primary-dark);
}

.news-card-img {
    width: 240px;
    flex-shrink: 0;
    overflow: hidden;
}

.news-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.news-card:hover .news-card-img img {
    transform: scale(1.08);
}

.news-card-body {
    flex: 1;
    padding: 20px 24px;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

/* ===== 列表视图 ===== */
.news-list-view .news-card {
    flex-direction: column;
}

.news-list-view .news-card-img {
    width: 100%;
    height: 180px;
}

.news-list-view .news-featured-card {
    flex-direction: column;
}

.news-list-view .news-featured-img {
    width: 100%;
    height: 220px;
}

/* ===== 新闻元信息/标签 ===== */
.news-card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.news-tag {
    display: inline-flex;
    align-items: center;
    font-size: 11px;
    padding: 2px 10px;
    border-radius: 2px;
    font-weight: 600;
    letter-spacing: 1px;
    line-height: 18px;
    height: 22px;
    margin-bottom: 0;
    box-sizing: border-box;
}

.news-tag--notice,
.news-tag--cat21 {
    background-color: var(--color-primary);
    color: var(--color-dark);
}

.news-tag--policy,
.news-tag--cat24 {
    background-color: #5B8C5A;
    color: #FFFFFF;
}

.news-tag--industry,
.news-tag--cat22 {
    background-color: var(--color-brown-medium);
    color: #FFFFFF;
}

.news-tag--conference {
    background-color: #7B6BA5;
    color: #FFFFFF;
}

.news-tag--academic,
.news-tag--cat23 {
    background-color: var(--color-primary-dark);
    color: #FFFFFF;
}

.news-date {
    font-size: 12px;
    color: var(--color-text-light);
}

.news-date i {
    margin-right: 4px;
}

.news-top-badge {
    display: inline-flex;
    align-items: center;
    font-size: 11px;
    padding: 2px 10px;
    border-radius: 2px;
    font-weight: 600;
    background-color: var(--color-accent-red);
    color: #FFFFFF;
    letter-spacing: 1px;
    line-height: 18px;
    height: 22px;
    margin-bottom: 0;
    box-sizing: border-box;
}

.news-top-badge i {
    margin-right: 3px;
    font-size: 11px;
    line-height: 1;
}

/* ===== 新闻卡片标题 ===== */
.news-card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-dark);
    line-height: 1.5;
    margin: 0 0 10px;
    letter-spacing: 0.5px;
}

.news-card-title a {
    color: inherit;
    transition: color 0.3s ease;
}

.news-card-title a:hover {
    color: var(--color-primary-dark);
}

.news-card-desc {
    font-size: 13px;
    color: var(--color-text-light);
    line-height: 1.8;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin: 0 0 12px;
}

.news-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 12px;
    border-top: 1px solid var(--color-border);
}

/* ===== 统计与操作 ===== */
.news-stats {
    display: flex;
    gap: 16px;
    font-size: 12px;
    color: var(--color-text-light);
}

.news-stats span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.news-stats i {
    font-size: 11px;
}

.news-read-more {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary-dark);
    transition: all 0.3s ease;
}

.news-read-more:hover {
    color: var(--color-dark);
}

.news-read-more i {
    transition: transform 0.3s ease;
}

.news-read-more:hover i {
    transform: translateX(4px);
}

/* ===== 侧边栏 ===== */

/* 搜索框 */
.sidebar-search-box {
    padding: 16px 20px;
}

.sidebar-search-wrap {
    display: flex;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    overflow: hidden;
}

.sidebar-search-input {
    flex: 1;
    height: 36px;
    border: none;
    padding: 0 12px;
    font-size: 13px;
    color: var(--color-text);
    outline: none;
    background: var(--color-primary-light);
}

.sidebar-search-input::placeholder {
    color: var(--color-text-light);
}

.sidebar-search-btn {
    width: 40px;
    height: 36px;
    border: none;
    background: var(--color-primary-dark);
    color: #FFFFFF;
    cursor: pointer;
    transition: background 0.3s ease;
}

.sidebar-search-btn:hover {
    background: var(--color-dark);
}

/* 归档列表 */
.sidebar-archive-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-archive-list li a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px;
    color: var(--color-text);
    font-size: 13px;
    border-bottom: 1px solid var(--color-border);
    transition: all 0.3s ease;
}

.sidebar-archive-list li:last-child a {
    border-bottom: none;
}

.sidebar-archive-list li a:hover {
    background: var(--color-primary-light);
    color: var(--color-dark);
}

/* ===== 详情页样式 ===== */
.news-detail-section {
    padding: 30px 0 60px;
    background: var(--color-primary-light);
}

.news-detail-article {
    background: var(--color-white);
    border-radius: 6px;
    border: 1px solid var(--color-border);
    overflow: hidden;
}

/* 文章头部 */
.news-detail-header {
    padding: 36px 48px 0;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 28px;
}

.news-detail-tags {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 14px;
}

.news-detail-title {
    font-size: 26px;
    font-weight: 700;
    color: var(--color-dark);
    line-height: 1.5;
    letter-spacing: 1px;
    margin: 0 0 18px;
}

.news-detail-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.news-detail-info {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 13px;
    color: var(--color-text-light);
    flex-wrap: wrap;
}

.news-detail-info i {
    margin-right: 4px;
    color: var(--color-primary-dark);
}

.news-detail-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}

.news-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: var(--color-text-light);
    padding: 4px 12px;
    border: 1px solid var(--color-border);
    border-radius: 2px;
    transition: all 0.3s ease;
    cursor: pointer;
    background: none;
}

a.news-action-btn:hover {
    color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    background: var(--color-primary-light);
}

/* 文章正文 */
.news-detail-content {
    padding: 30px 48px 40px;
    font-size: 15px;
    line-height: 2;
    color: var(--color-text);
}

.news-detail-content p {
    margin-bottom: 18px;
    text-indent: 2em;
}

.news-detail-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-dark);
    margin: 30px 0 16px;
    padding-left: 14px;
    border-left: 3px solid var(--color-primary-dark);
}

.news-detail-content ul,
.news-detail-content ol {
    padding-left: 3em;
    margin-bottom: 18px;
}

.news-detail-content li {
    margin-bottom: 8px;
    line-height: 1.8;
}

.news-detail-content strong {
    color: var(--color-dark);
    font-weight: 600;
}

.news-detail-content a {
    color: var(--color-primary-dark);
    border-bottom: 1px dashed var(--color-primary-dark);
}

.news-detail-content a:hover {
    color: var(--color-dark);
    border-bottom-style: solid;
}

.news-detail-content table {
    width: 100%;
    margin: 20px 0;
    border-collapse: collapse;
}

.news-detail-table thead th {
    background: var(--color-primary-light);
    font-weight: 600;
    color: var(--color-dark);
    padding: 12px 16px;
    text-align: left;
    border: 1px solid var(--color-border);
    font-size: 14px;
}

.news-detail-table tbody td {
    padding: 10px 16px;
    border: 1px solid var(--color-border);
    font-size: 14px;
}

.news-detail-table tbody tr:hover {
    background: var(--color-primary-light);
}

/* 底部标签 */
.news-detail-tags-bottom {
    padding: 20px 36px;
    border-top: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.tags-label {
    font-size: 13px;
    color: var(--color-text-light);
    flex-shrink: 0;
}

.tags-label i {
    margin-right: 4px;
}

.news-keyword-tag {
    display: inline-block;
    font-size: 12px;
    padding: 3px 12px;
    background: var(--color-primary-light);
    color: var(--color-brown-medium);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.news-keyword-tag:hover {
    background: var(--color-primary);
    color: var(--color-dark);
}

/* 互动栏 */
.news-detail-interact {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 36px;
    border-top: 1px solid var(--color-border);
    background: var(--color-primary-light);
    flex-wrap: wrap;
    gap: 12px;
}

.interact-left {
    display: flex;
    gap: 10px;
}

.interact-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--color-brown);
    padding: 6px 20px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background: var(--color-white);
    transition: all 0.3s ease;
    cursor: pointer;
}

.interact-btn:hover {
    border-color: var(--color-primary-dark);
    color: var(--color-primary-dark);
}

.interact-btn.liked,
.interact-btn.collected {
    background: var(--color-primary);
    border-color: var(--color-primary-dark);
    color: var(--color-dark);
}

.interact-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.share-label {
    font-size: 13px;
    color: var(--color-text-light);
}

.share-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    color: var(--color-text-light);
    font-size: 14px;
    transition: all 0.3s ease;
}

.share-btn:hover {
    border-color: var(--color-primary-dark);
    color: var(--color-primary-dark);
    background: var(--color-primary-light);
}

.share-weixin:hover {
    border-color: #07C160;
    color: #07C160;
    background: rgba(7, 193, 96, 0.1);
}

.share-weibo:hover {
    border-color: #E6162D;
    color: #E6162D;
    background: rgba(230, 22, 45, 0.1);
}

.share-qq:hover {
    border-color: #12B7F5;
    color: #12B7F5;
    background: rgba(18, 183, 245, 0.1);
}

/* 上下篇导航 */
.news-detail-nav {
    display: flex;
    padding: 20px 36px;
    border-top: 1px solid var(--color-border);
}

.news-detail-nav > div {
    flex: 1;
}

.nav-prev {
    padding-right: 16px;
}

.nav-next {
    padding-left: 16px;
    text-align: right;
}

.nav-label {
    display: block;
    font-size: 12px;
    color: var(--color-text-light);
    margin-bottom: 6px;
}

.news-detail-nav a {
    font-size: 14px;
    color: var(--color-brown);
    line-height: 1.6;
    transition: color 0.3s ease;
}

.news-detail-nav a:hover {
    color: var(--color-primary-dark);
}

/* 相关新闻 */
.news-related {
    padding: 24px 36px 30px;
    border-top: 1px solid var(--color-border);
}

.related-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-dark);
    letter-spacing: 1px;
    margin: 0 0 18px;
}

.related-title i {
    margin-right: 8px;
    color: var(--color-primary-dark);
}

.related-news-card {
    display: flex;
    background: var(--color-primary-light);
    border-radius: 4px;
    border: 1px solid var(--color-border);
    overflow: hidden;
    margin-bottom: 14px;
    transition: all 0.3s ease;
}

.related-news-card:hover {
    border-color: var(--color-primary-dark);
    box-shadow: 0 4px 12px rgba(61, 52, 39, 0.08);
}

.related-news-img {
    width: 120px;
    flex-shrink: 0;
    overflow: hidden;
}

.related-news-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.related-news-card:hover .related-news-img img {
    transform: scale(1.08);
}

.related-news-info {
    flex: 1;
    padding: 10px 14px;
    min-width: 0;
}

.related-news-info .news-tag {
    margin-bottom: 6px;
}

.related-news-info h4 {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-dark);
    line-height: 1.5;
    margin: 0 0 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-news-card:hover .related-news-info h4 {
    color: var(--color-primary-dark);
}

.related-news-date {
    font-size: 12px;
    color: var(--color-text-light);
}

/* ===== 响应式 ===== */
@media (max-width: 991px) {
    .news-featured-card {
        flex-direction: column;
    }

    .news-featured-img {
        width: 100%;
        height: 200px;
    }

    .news-card-img {
        width: 180px;
    }

    .news-detail-banner {
        height: 150px;
    }

    .news-detail-title {
        font-size: 22px;
    }

    .news-detail-meta {
        flex-direction: column;
        align-items: flex-start;
    }

    .news-detail-content {
        padding: 24px;
    }

    .news-detail-header {
        padding: 24px 24px 0;
        padding-bottom: 18px;
    }

    .news-detail-tags-bottom,
    .news-detail-interact,
    .news-detail-nav,
    .news-related {
        padding-left: 24px;
        padding-right: 24px;
    }

    .news-detail-nav {
        flex-direction: column;
        gap: 14px;
    }

    .nav-next {
        text-align: left;
        padding-left: 0;
    }
}

@media (max-width: 767px) {
    .news-featured-body {
        padding: 18px;
    }

    .news-featured-title {
        font-size: 16px;
    }

    .news-featured-desc {
        -webkit-line-clamp: 2;
    }

    .news-card {
        flex-direction: column;
    }

    .news-card-img {
        width: 100%;
        height: 160px;
    }

    .news-card-body {
        padding: 16px 18px;
    }

    .news-card-title {
        font-size: 15px;
    }

    .news-detail-title {
        font-size: 20px;
    }

    .news-detail-content {
        padding: 18px;
        font-size: 14px;
    }

    .news-detail-content h3 {
        font-size: 16px;
    }

    .news-detail-info {
        flex-direction: column;
        gap: 6px;
    }

    .news-detail-interact {
        flex-direction: column;
        align-items: flex-start;
    }

    .related-news-card {
        flex-direction: column;
    }

    .related-news-img {
        width: 100%;
        height: 120px;
    }

    .news-list-section {
        padding: 20px 0 40px;
    }
}