/**
 * 响应式样式 - 移动端适配
 */

/* 平板设备 (768px - 991px) */
@media (max-width: 991px) {
    .container {
        max-width: 750px;
    }

    .article-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .article-grid-small {
        grid-template-columns: repeat(3, 1fr);
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 手机设备 (小于768px) */
@media (max-width: 767px) {
    .container {
        padding: 0 15px;
    }

    /* 导航栏吸顶（desktop已统一设置，此处无需覆盖） */

    /* 头部 */
    .header-content {
        flex-direction: column;
        gap: 15px;
    }

    .logo img {
        max-height: 50px;
    }

    .search-input {
        width: 200px;
    }

    .search-btn {
        padding: 10px 15px;
    }

    /* 导航 */
    .main-nav {
        min-height: 48px;
    }
    .main-nav .container {
        min-height: 48px;
        position: relative;
    }
    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--yanyuan-red);
        z-index: 100;
    }

    .nav-menu.show {
        display: flex;
    }

    .nav-link {
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .mobile-menu-toggle {
        display: flex;
        position: absolute;
        right: 20px;
        top: 50%;
        transform: translateY(-50%);
    }

    /* 页面布局 */
    .page-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        position: static;
    }

    /* 轮播图 */
    .hero-slider {
        height: 250px;
    }

    .slide-caption h2 {
        font-size: 22px;
    }

    .slide-caption p {
        font-size: 14px;
    }

    /* 文章网格 */
    .article-grid {
        grid-template-columns: 1fr;
    }

    .article-grid-small {
        grid-template-columns: repeat(2, 1fr);
    }

    .article-container.grid-small-mode {
        grid-template-columns: 1fr;
    }

    .article-container.grid-large-mode {
        grid-template-columns: 1fr;
    }

    /* 列表文章 */
    .list-article {
        flex-direction: column;
    }

    .list-article .article-thumb {
        width: 100%;
        height: 200px;
    }

    /* 文章详情 */
    .article-detail {
        padding: 20px;
    }

    .article-title {
        font-size: 24px;
    }

    .article-body {
        font-size: 15px;
    }

    /* 文章导航 */
    .article-nav {
        grid-template-columns: 1fr;
    }

    .next-article {
        text-align: left;
    }

    /* 页脚 */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    /* 返回顶部 */
    .back-to-top {
        right: 20px;
        bottom: 20px;
        width: 45px;
        height: 45px;
    }

    /* 首页专题报道：改为单列，禁用横向滑动 */
    .special-slider-window {
        overflow: visible;
    }
    .special-slider {
        flex-wrap: wrap;
        transform: none !important;
    }
    .special-slide-card {
        flex: 0 0 100%;
    }
    .special-overlay-btn {
        display: none !important;
    }

    /* 资讯中心/校友动态配图：竖排，图片在上 */
    .section-with-image {
        flex-direction: column;
    }
    .section-fixed-image {
        width: 100%;
    }
    .section-fixed-image img {
        height: 200px;
    }
    .section-fixed-image a {
        height: 200px !important;
    }
}

/* 超小屏幕 (小于480px) */
@media (max-width: 479px) {
    .search-input {
        width: 150px;
    }

    .article-grid-small {
        grid-template-columns: 1fr;
    }

    .view-mode-controls {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}