/**
 * responsive.css - 响应式样式
 * 林草生态技术系网站
 * 包含平板端和移动端的响应式适配
 */

/* =========================================
   桌面端 (min-width: 1025px)
   ========================================= */
@media (min-width: 1025px) {
    .container {
        max-width: var(--container-width);
        margin: 0 auto;
    }
    
    /* 侧边栏折叠按钮桌面端隐藏 */
    .sidebar-toggle {
        display: none;
    }
}

/* =========================================
   大屏幕 (1440px以上)
   ========================================= */
@media (min-width: 1440px) {
    :root {
        --font-size-base: 16px;
        --font-size-sm: 14px;
        --font-size-lg: 18px;
        --font-size-xl: 22px;
        --font-size-xxl: 30px;
        --font-size-title: 24px;
    }
    
    /* 容器加宽 */
    .container {
        max-width: 1400px;
    }
    
    /* 导航栏高度适当增加 */
    .main-header {
        height: 75px;
    }
    
    .main-nav > ul > li > a {
        line-height: 75px;
        padding: 0 20px;
    }
    
    /* 侧边栏宽度适当加宽 */
    .sidebar,
    .content-right {
        width: 260px;
    }
    
    /* section间距适当增加 */
    .main-content {
        padding: 25px 0;
    }
    
    .content-wrapper {
        gap: 25px;
    }
    
    /* 卡片内padding增加 */
    .card-body {
        padding: 25px;
    }
    
    /* 首页专业卡片间距增大 */
    .majors-wrapper {
        grid-template-columns: repeat(4, 1fr);
        gap: 30px;
    }
    
    /* 快捷通道间距增大 */
    .quick-links-wrapper {
        gap: 25px;
    }
}

/* =========================================
   超大屏幕 (1920px以上)
   ========================================= */
@media (min-width: 1920px) {
    :root {
        --font-size-base: 18px;
        --font-size-sm: 15px;
        --font-size-lg: 20px;
        --font-size-xl: 24px;
        --font-size-xxl: 32px;
        --font-size-title: 26px;
    }
    
    .container {
        max-width: 1600px;
    }
    
    /* 行高也适当放大 */
    body {
        line-height: 1.8;
    }
    
    /* 导航栏高度 */
    .main-header {
        height: 80px;
    }
    
    .main-nav > ul > li > a {
        line-height: 80px;
        padding: 0 22px;
    }
    
    /* 侧边栏宽度 */
    .sidebar,
    .content-right {
        width: 300px;
    }
    
    /* section间距继续增加 */
    .main-content {
        padding: 30px 0;
    }
    
    .content-wrapper {
        gap: 35px;
    }
    
    /* 卡片内padding */
    .card-body {
        padding: 30px;
    }
    
    /* 页脚间距 */
    .footer-info {
        padding: 40px 0;
    }
    
    /* 首页专业卡片间距进一步增大 */
    .majors-wrapper {
        grid-template-columns: repeat(4, 1fr);
        gap: 40px;
    }
    
    .major-card {
        padding: 40px 25px;
    }
    
    /* 快捷通道间距增大 */
    .quick-links-wrapper {
        gap: 30px;
    }
    
    .quick-link-item {
        padding: 30px 20px;
    }
}

/* =========================================
   2K屏幕 (2560px以上)
   ========================================= */
@media (min-width: 2560px) {
    :root {
        --font-size-base: 20px;
        --font-size-sm: 16px;
        --font-size-lg: 22px;
        --font-size-xl: 28px;
        --font-size-xxl: 36px;
        --font-size-title: 30px;
    }
    
    .container {
        max-width: 1920px;
    }
    
    /* 导航栏高度 */
    .main-header {
        height: 90px;
    }
    
    .main-nav > ul > li > a {
        line-height: 90px;
        padding: 0 25px;
    }
    
    /* 侧边栏宽度 */
    .sidebar,
    .content-right {
        width: 340px;
    }
    
    /* section间距 */
    .main-content {
        padding: 40px 0;
    }
    
    .content-wrapper {
        gap: 45px;
    }
    
    /* 卡片内padding */
    .card-body {
        padding: 35px;
    }
    
    /* 页脚间距 */
    .footer-info {
        padding: 50px 0;
    }
    
    /* 首页专业卡片间距 */
    .majors-wrapper {
        grid-template-columns: repeat(4, 1fr);
        gap: 50px;
    }
    
    .major-card {
        padding: 45px 30px;
    }
    
    /* 快捷通道间距 */
    .quick-links-wrapper {
        gap: 35px;
    }
    
    .quick-link-item {
        padding: 35px 25px;
    }
}

/* =========================================
   平板端 (max-width: 1024px)
   ========================================= */
@media (max-width: 1024px) {
    /* 容器宽度调整 */
    .container {
        max-width: 100%;
        padding: 0 20px;
    }
    
    /* 导航间距调整 */
    .main-nav > ul > li > a {
        padding: 0 12px;
    }
    
    /* 内容区布局调整 */
    .content-wrapper {
        gap: 15px;
    }
    
    /* 侧边栏宽度调整 */
    .sidebar,
    .content-right {
        width: 200px;
    }
    
    /* 网格列数调整 */
    .grid-list {
        grid-template-columns: repeat(3, 1fr);
        gap: 15px;
    }
    
    /* 页脚信息区调整 */
    .footer-info .container {
        flex-wrap: wrap;
    }
    
    .footer-info-item {
        flex: 0 0 50%;
        margin-bottom: 20px;
    }
    
    /* ---- 首页模块 ---- */
    /* Banner */
    .banner-section {
        height: 320px;
    }
    
    .banner-content {
        padding: 30px 15px 20px;
    }
    
    .banner-content h2 {
        font-size: 24px;
    }
    
    .banner-content p {
        font-size: 14px;
    }
    
    /* 学科专业卡片 */
    .majors-wrapper {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .major-card {
        padding: 25px 15px;
    }
    
    .major-icon {
        width: 80px;
        height: 80px;
    }
    
    .major-icon span {
        font-size: 36px;
    }
    
    /* 表格响应式容器 */
    .table-responsive {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    /* ---- 师资队伍页面平板端响应式 ---- */
    .teacher-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .teacher-card {
        flex-direction: row;
    }
    
    .teacher-photo {
        width: 140px;
        min-height: 180px;
    }
    
    .photo-placeholder {
        min-height: 180px;
    }
}

/* =========================================
   移动端 (max-width: 768px)
   ========================================= */
@media (max-width: 768px) {
    /* 容器内边距 */
    .container {
        padding: 0 15px;
    }
    
    /* ---- 顶部条 ---- */
    /* .top-bar 已移除，相关响应式样式已注释 */
    
    /* ---- 主导航栏 ---- */
    .main-header {
        height: auto;
        min-height: 60px;
        padding: 10px 0;
    }
    
    .main-header .container {
        flex-wrap: wrap;
    }
    
    .logo-area .site-name {
        font-size: 18px;
    }
    
    .logo-area .logo {
        width: 36px;
        height: 36px;
    }
    
    /* 汉堡菜单显示 */
    .menu-toggle {
        display: flex;
    }
    
    /* 导航菜单隐藏/展开 */
    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-white);
        box-shadow: var(--shadow);
        display: none;
        z-index: 200;
    }
    
    .main-nav.active {
        display: block;
    }
    
    .main-nav > ul {
        flex-direction: column;
    }
    
    .main-nav > ul > li {
        border-bottom: 1px solid var(--color-border);
    }
    
    .main-nav > ul > li > a {
        line-height: 50px;
        padding: 0 20px;
    }
    
    .main-nav > ul > li > a::after {
        display: none;
    }
    
    /* 移动端下拉子菜单 */
    .main-nav .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        display: none;
        background-color: var(--color-bg-alt);
    }
    
    .main-nav > ul > li.open .sub-menu {
        display: block;
    }
    
    .main-nav .sub-menu li a {
        padding-left: 40px;
    }
    
    /* ---- 面包屑 ---- */
    .breadcrumb {
        font-size: 12px;
    }
    
    .breadcrumb .separator {
        margin: 0 3px;
    }
    
    /* 列表头部响应式 - 移动端标题和面包屑垂直排列 */
    .list-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .list-header .breadcrumb {
        width: 100%;
        justify-content: flex-start;
    }
    
    /* 内容头部响应式 */
    .content-header {
        justify-content: flex-start;
        margin-bottom: 15px;
        padding-bottom: 10px;
    }
    
    .content-header .breadcrumb {
        flex-wrap: wrap;
    }
    
    /* ---- 内容区布局 ---- */
    .content-wrapper {
        flex-direction: column;
    }
    
    .content-left,
    .content-right {
        width: 100%;
    }
    
    /* ---- 侧边栏 ---- */
    .sidebar {
        width: 100%;
        margin-bottom: 20px;
    }
    
    /* 移动端侧边栏折叠模式 */
    .sidebar-title {
        padding: 12px 15px;
        font-size: 16px;
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        position: relative;
    }
    
    .sidebar-title::after {
        content: '\25BC';
        font-size: 12px;
        transition: transform 0.3s ease;
    }
    
    .sidebar.collapsed .sidebar-title::after {
        transform: rotate(-90deg);
    }
    
    .sidebar.collapsed .sidebar-nav,
    .sidebar.collapsed .sidebar-menu {
        display: none;
    }
    
    .sidebar-nav,
    .sidebar-menu {
        transition: max-height 0.3s ease;
    }
    
    .sidebar-menu li a,
    .sidebar-nav li a {
        padding: 10px 15px;
        min-height: 44px;
        display: flex;
        align-items: center;
    }
    
    /* ---- 页脚 ---- */
    .footer-links {
        padding: 15px 0;
    }
    
    .footer-links ul {
        gap: 10px 20px;
    }
    
    .footer-info {
        padding: 20px 0;
    }
    
    .footer-info .container {
        flex-direction: column;
    }
    
    .footer-info-item {
        flex: none;
        width: 100%;
        margin-bottom: 20px;
        padding: 0;
    }
    
    .footer-info-item:last-child {
        margin-bottom: 0;
    }
    
    .footer-bottom {
        padding: 12px 0;
        font-size: 11px;
    }
    
    /* ---- 分页器 ---- */
    .pagination {
        gap: 5px;
        flex-wrap: wrap;
    }
    
    .pagination a,
    .pagination span {
        min-width: 32px;
        height: 32px;
        padding: 0 8px;
        font-size: 12px;
    }
    
    .pagination .prev,
    .pagination .next {
        padding: 0 10px;
    }
    
    /* ---- 通用组件 ---- */
    .section-title {
        padding-bottom: 12px;
        margin-bottom: 15px;
    }
    
    .section-title .title {
        font-size: 18px;
    }
    
    .section-title .title::before {
        height: 16px;
    }
    
    /* 网格调整 */
    .grid-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    /* 表格响应式 - 横向滚动 */
    .article-body table,
    .page-body table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        white-space: nowrap;
    }
    
    .article-body table th,
    .article-body table td,
    .page-body table th,
    .page-body table td {
        min-width: 100px;
    }
    
    .grid-item .info {
        padding: 10px 12px;
    }
    
    .grid-item .info h4 {
        font-size: 13px;
    }
    
    /* 图文列表调整 */
    .media-list li {
        gap: 12px;
        padding: 12px 0;
    }
    
    .media-list .thumb {
        width: 100px;
        height: 68px;
    }
    
    .media-list .content h4 {
        font-size: 14px;
        margin-bottom: 5px;
    }
    
    .media-list .content p {
        -webkit-line-clamp: 1;
    }
    
    /* 文章详情 */
    .article-header h1 {
        font-size: 20px;
    }
    
    .article-content {
        font-size: 15px;
    }
    
    .article-nav {
        flex-direction: column;
        gap: 10px;
    }
    
    .article-nav a {
        max-width: 100%;
    }
    
    /* 回到顶部按钮 */
    .back-to-top {
        right: 15px;
        bottom: 15px;
        width: 40px;
        height: 40px;
        font-size: 18px;
    }
    
    /* 卡片 */
    .card-header,
    .card-body,
    .card-footer {
        padding: 12px 15px;
    }
    
    /* 按钮 - 确保触摸友好 (最小44x44px触摸区域) */
    .btn {
        padding: 8px 16px;
        min-height: 44px;
        min-width: 44px;
    }
    
    .btn-lg {
        padding: 10px 24px;
        min-height: 48px;
    }
    
    .btn-sm {
        min-height: 40px;
        padding: 6px 12px;
    }
    
    /* ---- 首页模块响应式 ---- */
    /* Banner */
    .banner-section {
        height: 250px;
    }
    
    .banner-content {
        padding: 25px 12px 15px;
    }
    
    .banner-content h2 {
        font-size: 18px;
    }
    
    .banner-content p {
        font-size: 12px;
    }
    
    .banner-prev,
    .banner-next {
        width: 36px;
        height: 36px;
        font-size: 18px;
    }
    
    .banner-prev {
        left: 10px;
    }
    
    .banner-next {
        right: 10px;
    }
    
    .banner-dots {
        bottom: 15px;
    }
    
    .banner-dot {
        width: 10px;
        height: 10px;
    }
    
    /* 新闻+通知双栏区 */
    .news-notice-section {
        padding: 30px 0;
    }
    
    .news-notice-wrapper {
        flex-direction: column;
        gap: 30px;
    }
    
    .news-block,
    .notice-block {
        flex: none;
        max-width: 100%;
    }
    
    .news-block .section-title {
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .tab-nav {
        margin-left: 0;
        order: 3;
        width: 100%;
    }
    
    .more-link {
        margin-left: auto;
    }
    
    .news-item {
        padding: 12px 0;
    }
    
    .news-thumb {
        width: 100px;
        height: 68px;
    }
    
    .news-info h3 {
        font-size: var(--font-size-base);
    }
    
    .news-summary {
        -webkit-line-clamp: 1;
    }
    
    .notice-date {
        width: 55px;
        min-width: 55px;
        padding: 6px 4px;
    }
    
    .notice-date .day {
        font-size: 18px;
    }
    
    .notice-date .month {
        font-size: 10px;
    }
    
    /* 学科专业展示区 */
    .majors-section {
        padding: 30px 0;
    }
    
    .section-title-center h2 {
        font-size: 22px;
    }
    
    .majors-wrapper {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .major-card {
        padding: 20px 15px;
    }
    
    .major-icon {
        width: 70px;
        height: 70px;
        margin-bottom: 15px;
    }
    
    .major-icon span {
        font-size: 32px;
    }
    
    .major-card h3 {
        font-size: var(--font-size-lg);
        margin-bottom: 8px;
    }
    
    /* 党建思政 */
    .party-section {
        padding: 30px 0;
    }
    
    .party-wrapper {
        grid-template-columns: 1fr;
    }
    
    .party-item {
        padding: 12px;
    }
    
    .party-thumb {
        width: 100px;
        height: 68px;
    }
    
    /* 快捷通道 */
    .quick-links-section {
        padding: 30px 0;
    }
    
    .quick-links-wrapper {
        grid-template-columns: repeat(4, 1fr);
        gap: 12px;
    }
    
    .quick-link-item {
        padding: 20px 10px;
    }
    
    .quick-icon {
        font-size: 28px;
        margin-bottom: 8px;
    }
    
    .quick-link-item span {
        font-size: 13px;
    }
    
    /* 教师队伍区块 */
    .teachers-section {
        padding: 30px 0;
    }
    
    .teachers-wrapper {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .teacher-img {
        height: 160px;
    }
    
    .teacher-card h3 {
        padding: 12px;
        font-size: var(--font-size-sm);
    }
    
    /* 学生活动区块 */
    .student-activities-section {
        padding: 30px 0;
    }
    
    .activities-wrapper {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .activity-img {
        height: 140px;
    }
    
    .activity-card h3 {
        padding: 12px;
        font-size: var(--font-size-sm);
    }
    
    /* 页脚 */
    .footer-links .container {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .footer-info {
        flex-direction: column;
        gap: 8px;
    }
    
    /* 列表页响应式补充 */
    .content-area {
        padding: 20px 15px;
    }
    
    .list-header h2 {
        font-size: 18px;
    }
    
    .article-item {
        flex-wrap: wrap;
    }
    
    .item-date {
        width: 100%;
        text-align: left;
        margin-top: 5px;
        font-size: 11px;
    }
    
    /* 单页面响应式补充 */
    .page-detail {
        padding: 20px 15px;
    }
    
    .page-title {
        font-size: 18px;
        padding-left: 12px;
    }
    
    .page-stats {
        padding: 20px 15px;
    }
    
    .stat-number {
        font-size: 28px;
    }
    
    /* 领导卡片响应式 */
    .leader-card {
        flex-direction: column;
        text-align: center;
    }
    
    .leader-card .photo {
        width: 120px;
        height: 160px;
        margin: 0 auto 15px;
    }
    
    /* 详情页响应式补充 */
    .article-detail {
        padding: 20px 15px;
    }
    
    .article-title {
        font-size: 18px;
    }
    
    .article-meta {
        font-size: 13px;
        padding-bottom: 10px;
    }
    
    .article-meta .meta-divider {
        margin: 0 6px;
    }
    
    .article-meta .meta-item {
        display: inline;
    }
    
    .article-meta .icon-time,
    .article-meta .meta-item i.icon-time {
        width: 12px;
        height: 12px;
    }
    
    .article-body p,
    .page-body p {
        font-size: 15px;
    }
}

/* =========================================
   小屏幕移动端 (max-width: 480px)
   ========================================= */
@media (max-width: 480px) {
    /* 网格单列 */
    .grid-list {
        grid-template-columns: 1fr;
    }
    
    /* Logo区域 */
    .logo-area .site-name {
        font-size: 16px;
    }
    
    .logo-area .logo {
        width: 32px;
        height: 32px;
        margin-right: 8px;
    }
    
    /* 文章标题 */
    .article-header h1 {
        font-size: 18px;
    }
    
    /* 新闻列表日期隐藏 */
    .news-list .date {
        display: none;
    }
    
    /* 博达站群兼容：小屏幕下.news类列表项调整 */
    .article-list .news {
        padding: 12px 0;
    }
    
    .article-list .news_title {
        margin-right: 10px;
    }
    
    .article-list .news_title a {
        font-size: 14px;
    }
    
    .article-list .news_meta {
        font-size: 12px;
    }
    
    /* 分页简化 */
    .pagination .ellipsis {
        display: none;
    }
    
    /* ---- 首页模块 ---- */
    /* Banner */
    .banner-section {
        height: 180px;
    }
    
    .banner-content {
        padding: 20px 10px 12px;
    }
    
    .banner-content h2 {
        font-size: 16px;
    }
    
    .banner-content p {
        font-size: 11px;
        display: none;
    }
    
    .banner-prev,
    .banner-next {
        width: 30px;
        height: 30px;
        font-size: 14px;
    }
    
    /* 新闻缩略图隐藏 */
    .news-thumb {
        display: none;
    }
    
    /* 学科专业卡片单列 */
    .majors-wrapper {
        grid-template-columns: 1fr;
    }
    
    /* 党建思政卡片小屏幕适配 */
    .party-item {
        flex-direction: column;
    }
    
    .party-thumb {
        width: 100%;
        height: 160px;
    }
    
    /* 快捷通道响应式 */
    .quick-links-wrapper {
        grid-template-columns: repeat(4, 1fr);
        gap: 10px;
    }
    
    .quick-link-item {
        padding: 15px 8px;
    }
    
    .quick-icon {
        font-size: 24px;
    }
    
    .quick-link-item span {
        font-size: 11px;
    }
    
    /* 教师队伍区块小屏幕适配 */
    .teachers-wrapper {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .teacher-img {
        height: 120px;
    }
    
    .teacher-card h3 {
        padding: 10px;
        font-size: 12px;
    }
    
    /* 学生活动区块小屏幕适配 */
    .activities-wrapper {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .activity-img {
        height: 100px;
    }
    
    .activity-card h3 {
        padding: 10px;
        font-size: 12px;
    }
    
    .section-title-center h2 {
        font-size: 20px;
    }
    
    /* 隐藏列表日期 */
    .item-date {
        display: none;
    }
    
    /* 小屏幕隐藏面包屑中的部分文字 */
    .breadcrumb-label {
        display: none;
    }
    
    /* ---- 师资队伍页面响应式 ---- */
    .teacher-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .teacher-card {
        flex-direction: column;
    }
    
    .teacher-photo {
        width: 100%;
        height: 180px;
        min-height: auto;
    }
    
    .photo-placeholder {
        min-height: 180px;
    }
    
    .photo-placeholder span {
        writing-mode: horizontal-tb;
        letter-spacing: 2px;
    }
    
    .teacher-info {
        padding: 15px;
    }
    
    .teacher-name {
        font-size: var(--font-size-lg);
    }
    
    .teacher-desc {
        -webkit-line-clamp: 2;
    }
    
    /* 分页器更紧凑 */
    .pagination {
        gap: 3px;
    }
    
    .pagination a,
    .pagination span {
        min-width: 28px;
        height: 28px;
        padding: 0 5px;
        font-size: 11px;
    }
    
    /* 文章正文 */
    .article-body,
    .page-body {
        font-size: 14px;
    }
    
    .article-body h2,
    .page-body h2 {
        font-size: 17px;
    }
    
    .article-body h3,
    .page-body h3 {
        font-size: 15px;
    }
    
    /* 小屏幕下文章元信息适配 */
    .article-meta {
        font-size: 12px;
        text-align: center;
    }
    
    .article-meta .meta-item {
        display: inline;
        margin: 0 3px;
    }
    
    .article-meta .meta-divider {
        margin: 0 4px;
    }
}