/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

img {
    border: none;
}

body {
    font-family: Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #333;
    margin: 0;
    padding: 0;
    background: url('images/页面背景图.jpg') no-repeat center center;
    background-size: cover;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #FAFAE9;
    mix-blend-mode: multiply;
    pointer-events: none;
    z-index: 9999;
}

.forum-frame-outer {
    width: 98%;
    max-width: 1408px;
    height: 98vh;
    background-color: #848484;
    padding: 0 4px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
}

.forum-content {
    width: 100%;
    max-width: 1400px;
    height: 100%;
    display: flex;
    flex-direction: column;
    background-color: white;
    border: 4px solid #B2B2B2;
    box-shadow: inset 0 0 0 1px #000, inset 0 0 10px rgba(0, 0, 0, 0.1);
}

.forum-frame {
    flex: 1;
    overflow-y: auto;
    padding: 0;
}

/* 顶部导航栏 */
.top-nav {
    background: linear-gradient(to bottom, #DD5A60 0%, #E4ACAF 100%);
    color: black;
    padding: 2px 0;
    border: 1px solid #000;
}

.top-nav-container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 10px;
}

.logo {
    position: relative;
    display: inline-block;
}

.logo-image {
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background: url('images/红蜻蜓.png') no-repeat center;
    background-size: contain;
    z-index: 1;
    opacity: 0.7;
    transform: translateX(50%);
}

.logo a {
    color: black;
    text-decoration: none;
    font-size: 24px;
    font-weight: normal;
    line-height: 1.1;
    position: relative;
    z-index: 2;
}

.logo-sub {
    display: block;
    font-size: 14px;
    color: black;
    font-weight: normal;
    text-align: right;
    margin-top: 1px;
    position: relative;
    z-index: 2;
}

.top-links a {
    color: black;
    text-decoration: none;
    margin-right: 15px;
    font-size: 16px;
}

.top-links a:hover {
    text-decoration: underline;
}

.search-box {
    display: flex;
}

.search-box input {
    padding: 4px;
    border: 1px solid #990000;
    width: 220px;
    font-size: 15px;
}

.search-box button {
    padding: 4px 10px;
    background-color: #e8e8e8;
    color: black;
    border: 1px solid #C04A50;
    cursor: pointer;
    font-weight: normal;
}

.user-links {
    display: flex;
    align-items: center;
}

.audio-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background: transparent;
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: 10px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    color: #333;
}

.audio-icon {
    display: block;
}

.audio-toggle.paused .audio-icon::after {
    content: '\00D7';
    position: absolute;
    font-size: 16px;
    font-weight: bold;
    color: #cc0000;
    transform: translate(2px, -2px);
}

.user-links a {
    color: black;
    text-decoration: none;
    margin-left: 15px;
    font-size: 16px;
}

#user-links-container {
    display: flex;
    align-items: center;
}

#user-links-container a {
    margin-left: 10px;
}

.user-links a:hover {
    text-decoration: underline;
}

/* 分类导航 */
.category-nav {
    margin: 0;
    background-color: #DEDCDD;
    border: 1px solid #000;
    padding: 0;
}

.category-nav-container {
    display: flex;
    align-items: stretch;
    flex-wrap: wrap;
    gap: 0;
}

.category-nav-container a {
    color: #333;
    text-decoration: none;
    padding: 5px 10px;
    font-size: 15px;
    border-right: 1px solid #000;
    display: flex;
    align-items: center;
}

.category-nav-container a:last-child {
    border-right: none;
}

.category-nav-container a:hover {
    text-decoration: underline;
}

.category-nav-container a.active {
    color: #cc0000;
    font-weight: bold;
}

/* 主要内容区 */
.main-container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    gap: 0;
}

/* 左侧边栏 */
.left-sidebar {
    width: 325px;
    background-color: white;
    border-left: 1px solid #000;
    border-bottom: 1px solid #000;
    border-right: 1px solid #ddd;
    border-top: 1px solid #ddd;
    padding: 8px;
    margin: 0;
}

/* 右侧内容区（包含分类导航、主内容和右侧边栏） */
.right-content-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0;
    margin: 0;
}

/* 主内容和右侧边栏的容器 */
.content-wrapper {
    display: flex;
    gap: 0;
    flex: 1;
}

/* 右侧边栏 */
.right-sidebar {
    width: 220px;
    background-color: white;
    border: 1px solid #ddd;
    padding: 8px;
    margin: 0;
}

.scrollable-section {
    border: 1px solid #ddd;
    margin-bottom: 15px;
    background-color: white;
}

.section-header {
    background-color: white;
    padding: 4px 8px 4px 18px;
    border-bottom: 1px solid #ddd;
    font-size: 18px;
    font-weight: bold;
    color: #cc0000;
    position: relative;
}

.section-header::before {
    content: ">";
    position: absolute;
    left: 6px;
    color: #cc0000;
}

.scrollable-content {
    max-height: 250px;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 5px;
    background-color: white;
}

.scrollable-content ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.scrollable-content ul li {
    margin-bottom: 5px;
    padding-bottom: 3px;
    border-bottom: 1px dashed #e0e0e0;
}

.scrollable-content ul li:last-child {
    border-bottom: none;
}

.scrollable-content ul li a {
    color: #0066cc;
    text-decoration: none;
    font-size: 14px;
    line-height: 1.4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
    width: 100%;
}

.scrollable-content ul li a:hover {
    text-decoration: underline;
}

/* 滚动条样式 */
.scrollable-content::-webkit-scrollbar {
    width: 24px;
}

.scrollable-content::-webkit-scrollbar-track {
    background: #f1f1f1;
    border: 1px solid #ddd;
}

.scrollable-content::-webkit-scrollbar-thumb {
    background: #003366;
    border: 1px solid #002244;
}

.scrollable-content::-webkit-scrollbar-thumb:hover {
    background: #002244;
}

.scrollable-content::-webkit-scrollbar-button {
    background: #e0e0e0;
    height: 24px;
    border: 1px solid black;
}

.scrollable-content::-webkit-scrollbar-button:vertical:start:decrement {
    background: #e0e0e0 url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 20 20"><path d="M10 4L18 12H2L10 4z" fill="black"/></svg>') no-repeat center;
    border: 1px solid black;
}

.scrollable-content::-webkit-scrollbar-button:vertical:end:increment {
    background: #e0e0e0 url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 20 20"><path d="M10 16L18 8H2L10 16z" fill="black"/></svg>') no-repeat center;
    border: 1px solid black;
}

.announcement {
    margin-top: 10px;
    padding-top: 10px;
}

.announcement h4 {
    font-size: 18px;
    font-weight: bold;
    color: #000;
    margin: 0 0 5px 0;
    padding-left: 2px;
}

.announcement ul {
    padding-left: 5px;
}

.announcement ul li {
    border-bottom: none;
    margin-bottom: 3px;
}

.announcement ul li a {
    color: #333;
}

.sidebar-section {
    margin-bottom: 15px;
}

.sidebar-section h3 {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 8px;
    color: #cc0000;
    border-bottom: 1px dashed #ccc;
    padding-bottom: 4px;
    padding-left: 15px;
    position: relative;
}

.sidebar-section h3::before {
    content: ">";
    position: absolute;
    left: 0;
    color: #cc0000;
}

.sidebar-section ul {
    list-style: none;
    padding-left: 5px;
}

.sidebar-section ul li {
    margin-bottom: 8px;
}

.sidebar-section ul li a {
    color: #333;
    text-decoration: none;
    font-size: 15px;
}

.sidebar-section ul li a:hover {
    color: #0066cc;
}

.double-columns {
    display: flex;
    justify-content: space-between;
    gap: 10px;
}

.double-columns ul {
    width: 48%;
}

/* 主内容区 */
.main-content {
    flex: 1;
    background-color: white;
    border: 1px solid #ddd;
    padding: 10px;
    margin: 0;
}

.recent-viewers {
    margin-bottom: 10px;
    padding: 5px;
    font-size: 14px;
    color: #666;
}

.recent-viewers span {
    margin-right: 5px;
}

.recent-viewers a {
    color: #0066cc;
    text-decoration: none;
    margin-right: 8px;
}

.recent-viewers a:hover {
    text-decoration: underline;
}

.hot-topics {
    margin-bottom: 20px;
    padding: 10px;
    border: 1px dashed #ccc;
    background-color: #fafafa;
}

.hot-topics h3 {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 10px;
    color: #cc0000;
    padding-bottom: 8px;
    border-bottom: 1px dashed #ccc;
}

.hot-topics ul {
    list-style: none;
    margin-bottom: 15px;
    padding-left: 5px;
}

.hot-topics ul li {
    margin-bottom: 6px;
    padding-bottom: 6px;
    border-bottom: 1px dashed #e0e0e0;
}

.hot-topics ul li:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.hot-topics ul li a {
    color: #0066cc;
    text-decoration: none;
    font-size: 16px;
}

.hot-topics ul li a:hover {
    text-decoration: underline;
    color: #cc0000;
}

.post-btn {
    background-color: #cc0000;
    color: white;
    border: 1px solid #990000;
    padding: 4px 12px;
    cursor: pointer;
    font-size: 15px;
    font-weight: bold;
}

.forum-posts h3 {
    font-size: 17px;
    font-weight: bold;
    margin-bottom: 10px;
    color: #333;
    padding-left: 15px;
    position: relative;
}

.forum-posts h3::before {
    content: ">";
    position: absolute;
    left: 0;
    color: #cc0000;
}

.posts-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 15px;
    border: 1px dashed #ccc;
}

.posts-table th {
    background-color: #f5f5f5;
    padding: 6px 8px;
    text-align: left;
    border-bottom: 1px dashed #ccc;
    font-weight: bold;
    color: #666;
}

.posts-table td {
    padding: 6px 8px;
    border-bottom: 1px dashed #e0e0e0;
}

.posts-table tr:last-child td {
    border-bottom: none;
}

.posts-table td a {
    color: #0066cc;
    text-decoration: none;
}

.posts-table td a:hover {
    text-decoration: underline;
    color: #cc0000;
}

/* 右侧边栏 */
.right-sidebar {
    width: 220px;
}

.sidebar-ad {
    background-color: white;
    border: none;
    padding: 2px;
    margin-bottom: 5px;
}

.sidebar-ad img {
    width: 100%;
    height: auto;
    margin-bottom: 0;
}

.sidebar-ad p {
    font-size: 14px;
    text-align: center;
    color: #333;
}

/* 帖子详情 */
.post-detail {
    background-color: white;
    padding: 15px;
    border: 1px solid #ddd;
}

.post-header {
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid #ddd;
}

.post-header h2 {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 10px;
    color: #333;
}

.post-meta {
    font-size: 14px;
    color: #666;
}

.post-meta span {
    margin-right: 15px;
}

.post-content {
    margin-bottom: 30px;
}

.post-content h3 {
    font-size: 18px;
    font-weight: bold;
    margin: 20px 0 10px;
    color: #333;
}

.post-content p {
    margin-bottom: 15px;
    line-height: 1.6;
    font-size: 16px;
}

.post-content ol,
.post-content ul {
    margin: 15px 0;
    padding-left: 30px;
}

.post-content li {
    margin-bottom: 8px;
    font-size: 16px;
}

/* 评论区 */
.comments-section {
    margin-top: 30px;
    border-top: 1px solid #ddd;
    padding-top: 20px;
}

.comments-section h3 {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #333;
}

.comments-list {
    margin-bottom: 20px;
}

.comment-item {
    padding: 10px;
    border-bottom: 1px solid #eee;
    margin-bottom: 10px;
}

.comment-header {
    margin-bottom: 8px;
    font-size: 14px;
}

.comment-author {
    font-weight: bold;
    color: #333;
    margin-right: 10px;
}

.comment-date {
    color: #666;
}

.comment-content p {
    font-size: 16px;
    line-height: 1.6;
}

/* 评论表单 */
.comment-form {
    margin-top: 20px;
}

.comment-form h4 {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 10px;
    color: #333;
}

.form-group {
    margin-bottom: 10px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-size: 14px;
    font-weight: bold;
    color: #333;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 5px;
    border: 1px solid #ddd;
    font-size: 16px;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* 底部导航 */
.bottom-nav {
    background-color: #f5f5f5;
    border-top: 1px solid #ddd;
    border-bottom: 1px solid #ddd;
    padding: 10px 0;
    margin-top: 10px;
}

.bottom-nav-container {
    width: 95%;
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 15px;
}

.bottom-nav-container a {
    color: #333;
    text-decoration: none;
    font-size: 15px;
}

/* 底部状态栏 */
.status-bar {
    background-color: #3C4394;
    padding: 8px 0;
    flex-shrink: 0;
}

.status-container {
    width: 95%;
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.status-bar span {
    color: white;
    font-size: 15px;
}

.status-right {
    color: #ffcc00 !important;
}

/* 底部样式 */
footer {
    background-color: #f5f5f5;
    color: #666;
    padding: 20px 0;
    text-align: center;
    margin-top: 10px;
    border-top: 1px solid #ddd;
}

.footer-container {
    width: 95%;
    max-width: 1400px;
    margin: 0 auto;
}

.footer-container p {
    font-size: 12px;
}

/* 浮窗导航图标样式 */
.floating-ad {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    background-color: transparent;
    border: none;
    border-radius: 0;
    padding: 0;
    box-shadow: none;
    z-index: 1000;
    display: none;
    cursor: url('images/捕虫网.cur') 50 50, auto;
}

.floating-ad img {
    width: 100%;
    height: auto;
}

/* 右下角弹窗广告 */
.popup-ad {
    position: fixed;
    bottom: 0;
    right: 0;
    z-index: 1001;
    display: none;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.popup-content {
    background-color: transparent;
    border: none;
    border-radius: 0;
    padding: 0;
    box-shadow: none;
    width: 250px;
    text-align: center;
    position: relative;
}

.popup-content img {
    width: 100%;
    height: auto;
    position: relative;
}

.popup-close {
    position: absolute;
    top: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.7);
    color: #666;
    border: none;
    padding: 2px 6px;
    border-radius: 0;
    cursor: default;
    font-size: 10px;
    z-index: 1;
}

.popup-close:hover {
    background-color: rgba(255, 255, 255, 0.9);
}

/* 左侧关闭按钮 */
.left-close-btn {
    position: fixed;
    right: 0;
    z-index: 1002;
    display: none;
}

.left-close-btn .popup-close {
    position: relative;
    top: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    padding: 2px 6px;
    border-radius: 0;
    cursor: pointer;
    font-size: 10px;
    z-index: 1;
    text-decoration: none;
    display: inline-block;
}

.left-close-btn .popup-close:hover {
    background-color: rgba(0, 0, 0, 0.9);
    text-decoration: none;
}

/* 响应式设计 */
@media (max-width: 768px) {
    /* 顶部导航栏 */
    .top-nav-container {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .top-links {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .top-links a {
        margin-right: 0;
    }
    
    .search-box {
        width: 100%;
    }
    
    .search-box input {
        width: 100%;
        flex: 1;
    }
    
    .user-links {
        width: 100%;
        display: flex;
        justify-content: space-between;
    }
    
    .user-links a {
        margin-left: 0;
    }
    
    /* 分类导航 */
    .category-nav-container {
        flex-wrap: wrap;
        gap: 5px;
    }
    
    .location {
        width: 100%;
        margin-left: 0;
        margin-top: 5px;
    }
    
    /* 主内容区 */
    .main-container {
        flex-direction: column;
    }
    
    .left-sidebar,
    .right-sidebar {
        width: 100%;
    }
    
    /* 帖子列表 */
    .posts-table {
        font-size: 12px;
    }
    
    .posts-table th,
    .posts-table td {
        padding: 6px;
    }
    
    /* 帖子详情 */
    .post-header h2 {
        font-size: 16px;
    }
    
    .post-content h3 {
        font-size: 14px;
    }
    
    .post-content p,
    .post-content li {
        font-size: 13px;
    }
    
    /* 评论区 */
    .comments-section h3 {
        font-size: 14px;
    }
    
    .comment-content p {
        font-size: 13px;
    }
    
    /* 广告元素 */
    .floating-ad {
        width: 100px;
    }
    
    .popup-ad {
        bottom: 10px;
        right: 10px;
    }
    
    .popup-content {
        width: 200px;
    }
    
    /* 底部导航 */
    .bottom-nav-container {
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .bottom-nav-container a {
        font-size: 12px;
    }
}

/* 小屏幕手机适配 */
@media (max-width: 480px) {
    /* 顶部导航栏 */
    .top-nav {
        padding: 5px 0;
    }
    
    .logo a {
        font-size: 16px;
    }
    
    .top-links a {
        font-size: 12px;
    }
    
    /* 主内容区 */
    .main-content {
        padding: 10px;
    }
    
    .hot-topics h3,
    .forum-posts h3 {
        font-size: 14px;
    }
    
    .hot-topics ul li a {
        font-size: 13px;
    }
    
    /* 帖子详情 */
    .post-detail {
        padding: 10px;
    }
    
    .post-header h2 {
        font-size: 15px;
    }
    
    /* 广告元素 */
    .floating-ad {
        width: 80px;
    }
    
    .popup-content {
        width: 150px;
    }
    
    /* 底部导航 */
    .bottom-nav-container a {
        font-size: 11px;
    }
    
    /* 页脚 */
    .footer-container p {
        font-size: 11px;
    }
}