/* 17NAS 合并CSS - 优化加载性能 */
/* 包含：style.css + navbar-unified.css */
/* 版本：1.1.0 */

/* ============================================
   来自 style.css
   ============================================ */
body {
    color: #121212;
    font-size: 14px;
    font-family: "Helvetica Neue", "Segoe UI", Arial, "PingFang SC", "Noto Sans SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    margin: 0 auto;
    position: relative;
    overflow-x: hidden;
    background-color: #F7F7F7;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

a {
    color: #333;
    text-decoration: none !important;
}

a:hover {
    text-decoration: none !important;
}

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

img {
    max-width: 100%;
    display: inline-block;
    vertical-align: middle;
}

/* 导航栏样式已移至 /css/navbar-unified.css */

/* ============================================
   来自 navbar-unified.css
   ============================================ */
/*
 * 17NAS 统一导航栏样式
 * Version: 7.0 - Modern Unified Design
 * 与主页风格保持一致的现代化导航栏
 */

/* ========================================
   基础样式重置
   ======================================== */
.top-navbar * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.top-navbar ul {
    list-style: none;
}

.top-navbar a {
    text-decoration: none;
    color: inherit;
}

/* ========================================
   导航栏容器
   ======================================== */
.top-navbar {
    width: 100%;
    background: #ffffff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid #f0f0f0;
}

.navbar-container {
    max-width: 100%;
    margin: 0;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 48px;
}

/* ========================================
   Logo 区域
   ======================================== */
.navbar-logo {
    flex-shrink: 0;
}

.logo-link {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.logo-link:hover {
    background: rgba(0, 0, 0, 0.03);
    transform: translateY(-2px);
}

.logo-img {
    height: 32px;
    width: auto;
    display: block;
}

.logo-text {
    margin-left: 10px;
    font-size: 20px;
    font-weight: 700;
    color: #2c3e50;
    letter-spacing: 0.5px;
}

/* ========================================
   导航菜单
   ======================================== */
.navbar-menu {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    justify-content: center;
    margin: 0 40px;
}

.menu-item {
    position: relative;
}

.menu-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    color: #333;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
}

.menu-icon {
    width: 16px;
    height: 16px;
    fill: currentColor;
    stroke: currentColor;
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.menu-text {
    font-size: 14px;
}

/* 下拉箭头 */
.dropdown-arrow {
    width: 14px;
    height: 14px;
    stroke: currentColor;
    transition: transform 0.3s ease;
    margin-left: -2px;
}

/* 悬停效果 */
.menu-link:hover {
    background: #f5f5f5;
    color: #333;
    transform: translateY(-2px);
}

.menu-link:hover .menu-icon {
    transform: scale(1.1);
}

.menu-dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

/* 激活状态 */
.menu-item.active .menu-link {
    background: linear-gradient(135deg, #2c3e50 0%, #1a1a1a 100%);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.menu-item.active .menu-link:hover {
    background: linear-gradient(135deg, #1a1a1a 0%, #000000 100%);
    transform: translateY(-2px);
}

/* ========================================
   下拉菜单
   ======================================== */
.dropdown-submenu {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    min-width: 220px;
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid #f0f0f0;
}

/* 下拉菜单小三角 */
.dropdown-submenu::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    width: 12px;
    height: 12px;
    background: #ffffff;
    border-left: 1px solid #f0f0f0;
    border-top: 1px solid #f0f0f0;
}

.menu-dropdown:hover .dropdown-submenu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.submenu-link {
    display: block;
    padding: 12px 16px;
    color: #333;
    font-size: 14px;
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.submenu-link:hover {
    background: #f5f5f5;
    color: #333;
    transform: translateX(4px);
}

.submenu-divider {
    height: 1px;
    background: #f0f0f0;
    margin: 4px 8px;
}

.submenu-tag {
    color: #666;
    font-size: 13px;
}

/* ========================================
   用户认证区域
   ======================================== */
.navbar-auth {
    flex-shrink: 0;
}

#userAuthArea {
    display: flex;
    align-items: center;
    gap: 12px;
}

.auth-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border: none;
    white-space: nowrap;
}

.auth-btn-login {
    background: transparent;
    color: #333;
    border: 2px solid #e0e0e0;
}

.auth-btn-login:hover {
    background: #f5f5f5;
    border-color: #666;
    color: #333;
    transform: translateY(-2px);
}

.auth-btn-register {
    background: linear-gradient(135deg, #2c3e50 0%, #1a1a1a 100%);
    color: #ffffff;
    border: none;
}

.auth-btn-register:hover {
    background: linear-gradient(135deg, #1a1a1a 0%, #000000 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.auth-btn-user {
    background: #f5f5f5;
    color: #333;
    border: 2px solid #e0e0e0;
}

.auth-btn-user img {
    width: 28px !important;
    height: 28px !important;
    max-width: 28px !important;
    max-height: 28px !important;
    min-width: 28px !important;
    min-height: 28px !important;
    border-radius: 50% !important;
    object-fit: cover !important;
    border: 2px solid #fff !important;
    box-sizing: border-box !important;
    display: block !important;
    flex-shrink: 0 !important;
}

.auth-btn-user:hover {
    background: #e8e8e8;
    border-color: #666;
    color: #333;
}

.auth-btn-logout {
    background: transparent;
    color: #666;
    border: 2px solid #e0e0e0;
}

.auth-btn-logout:hover {
    background: #fff5f5;
    border-color: #dc3545;
    color: #dc3545;
}

.auth-btn-admin {
    background: linear-gradient(135deg, #555 0%, #333 100%);
    color: #ffffff;
    border: none;
}

.auth-btn-admin:hover {
    background: linear-gradient(135deg, #333 0%, #1a1a1a 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

/* ========================================
   移动端菜单按钮
   ======================================== */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 1001;
}

.hamburger-line {
    width: 100%;
    height: 3px;
    background: #333;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle:hover .hamburger-line {
    background: #333;
}

/* 移动端菜单打开状态 */
.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ========================================
   响应式设计
   ======================================== */

/* 平板设备 */
@media (max-width: 1024px) {
    .navbar-container {
        height: 65px;
    }

    .navbar-menu {
        margin: 0 20px;
        gap: 4px;
    }

    .menu-link {
        padding: 8px 14px;
        font-size: 14px;
    }

    .menu-icon {
        width: 16px;
        height: 16px;
    }

    .menu-text {
        font-size: 14px;
    }

    .auth-btn {
        padding: 8px 16px;
        font-size: 13px;
    }
}

/* 移动设备 */
@media (max-width: 768px) {
    /* 顶部导航栏 - 只显示Logo和菜单按钮 */
    .top-navbar {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
    }

    .navbar-container {
        height: 60px;
        padding: 0 15px;
        justify-content: center;
        position: relative;
    }

    .navbar-logo {
        margin: 0;
        flex: 0 0 auto;
    }

    .mobile-menu-toggle {
        position: absolute;
        right: 15px;
        top: 50%;
        transform: translateY(-50%);
    }

    .logo-img {
        height: 30px;
    }

    .logo-text {
        font-size: 20px;
        margin-left: 10px;
    }

    /* 为固定导航栏添加占位空间 */
    body {
        padding-top: 60px !important;
        padding-bottom: 60px !important;  /* 改为60px，匹配新导航高度 */
    }

    /* 隐藏移动端菜单按钮 - 底部导航始终显示 */
    .mobile-menu-toggle {
        display: none !important;
    }

    /* 隐藏桌面端认证按钮 */
    .navbar-auth {
        display: none !important;
    }

    /* 移动端菜单 - 完全隐藏header中的旧navbar-menu，使用新的#mobileNav代替 */
    .navbar-menu {
        display: none !important;
    }

    .menu-item {
        display: none !important;
    }

    .menu-link {
        display: none !important;
    }

    /* 隐藏下拉箭头 */
    .dropdown-arrow {
        display: none !important;
    }

    /* 移动端下拉菜单 - 隐藏 */
    .dropdown-submenu {
        display: none !important;
    }

    /* 移动端激活状态优化 */
    .menu-item.active .menu-link {
        background: rgba(44, 62, 80, 0.08);
        color: #2c3e50;
    }

    .menu-item.active .menu-icon {
        color: #2c3e50;
    }

    .dropdown-submenu::before {
        display: none;
    }

    .menu-dropdown.active .dropdown-submenu {
        max-height: 500px;
        opacity: 1;
    }

    .submenu-link {
        padding: 12px 24px;
    }

    /* 移动端用户认证区域 */
    .navbar-auth {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: #ffffff;
        padding: 15px 20px;
        box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.1);
        display: none;
    }

    .navbar-menu.active ~ .navbar-auth {
        display: block;
    }

    #userAuthArea {
        flex-direction: column;
        gap: 10px;
    }

    .auth-btn {
        width: 100%;
        justify-content: center;
        padding: 12px 20px;
        font-size: 15px;
    }
}

/* 小屏幕移动设备 */
@media (max-width: 480px) {
    .navbar-container {
        padding: 0 12px;
    }

    .logo-img {
        height: 26px;
    }

    .logo-text {
        font-size: 18px;
        margin-left: 8px;
    }

    .menu-link {
        padding: 12px 14px;
        font-size: 14px;
    }

    .menu-icon {
        width: 16px;
        height: 16px;
    }
}

/* ========================================
   动画效果
   ======================================== */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.top-navbar {
    animation: fadeInDown 0.4s ease-out;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* ========================================
   打印样式
   ======================================== */
@media print {
    .top-navbar {
        position: static;
        box-shadow: none;
        border-bottom: 1px solid #ddd;
    }

    .mobile-menu-toggle,
    .navbar-auth {
        display: none;
    }
}

/* ========================================
   文章页面样式 - Article Styles
   从article.php迁移至此以支持Swup过渡
   ======================================== */

/* 文章容器 */
.article-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 20px 80px;
    position: relative;
}

.article-main {
    max-width: 900px;
    margin: 0 auto;
}

@media (max-width: 1400px) {
    .toc-sidebar {
        display: none !important;
    }
}

/* 文章头部 */
.article-header {
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 2px solid #f0f0f0;
}

.article-category {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, #2c3e50 0%, #1a1a1a 100%);
    color: white;
    font-size: 13px;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: 20px;
}

.article-title {
    font-size: 32px;
    font-weight: 700;
    color: #2c3e50;
    line-height: 1.4;
    margin-bottom: 20px;
}

/* 文章元信息 - 高优先级确保覆盖 Bootstrap */
.article-header .article-meta,
.article-meta {
    display: flex !important;
    align-items: center !important;
    flex-wrap: wrap !important;
    gap: 8px 20px !important;
    font-size: 14px !important;
    color: #666 !important;
}

.article-header .meta-item,
.meta-item {
    display: flex !important;
    align-items: center !important;
    gap: 6px !important;
}

.article-header .meta-item i,
.meta-item i {
    color: #666 !important;
}

/* 文章内容 - mdnice样式兼容 */
.article-content {
    font-size: 16px;
    line-height: 1.8em;
    color: #333;
    font-family: Optima, "Microsoft YaHei", PingFangSC-regular, serif;
}

/* mdnice section样式 */
.article-content section p {
    margin-top: 0px;
    margin-bottom: 0px;
    line-height: 1.8em;
    letter-spacing: 0em;
    text-indent: 0em;
    padding: 8px 0px;
}

.article-content section h2 {
    margin: 30px 0px 15px;
    padding: 0px;
}

.article-content section h2 .content {
    font-size: 22px;
    line-height: 1.5em;
    letter-spacing: 0em;
    display: block;
    font-weight: 700;
}

.article-content section h3 {
    margin: 30px 0px 15px;
    padding: 0px;
}

.article-content section h3 .content {
    font-size: 20px;
    line-height: 1.5em;
    letter-spacing: 0em;
    display: block;
    font-weight: 700;
}

.article-content section h4 .content {
    font-size: 18px;
    line-height: 1.5em;
    letter-spacing: 0em;
    display: block;
    font-weight: 700;
}

.article-content section img {
    display: block;
    margin: 0px auto;
    max-width: 100%;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
}

.article-content section ul,
.article-content section ol {
    margin-top: 8px;
    margin-bottom: 8px;
    padding: 0px 0px 0px 25px;
}

.article-content section li section {
    margin-top: 5px;
    margin-bottom: 5px;
    line-height: 1.8em;
    letter-spacing: 0em;
}

.article-content section code {
    color: rgb(30, 107, 184);
    font-size: 14px;
    line-height: 1.8em;
    letter-spacing: 0em;
    background: rgba(27, 31, 35, 0.05);
    margin: 0px 2px;
    padding: 2px 4px;
    border-radius: 4px;
    font-family: Consolas, Monaco, Menlo, monospace;
    word-break: break-all;
}

.article-content section pre {
    margin-top: 10px;
    margin-bottom: 10px;
    padding: 0px;
    border-radius: 5px;
    box-shadow: rgba(0, 0, 0, 0.55) 0px 2px 10px;
}

.article-content section pre code {
    overflow-x: auto;
    padding: 15px 16px 16px;
    color: rgb(171, 178, 191);
    background: rgb(40, 44, 52);
    border-radius: 5px;
    display: block;
    font-family: Consolas, Monaco, Menlo, monospace;
    font-size: 12px;
}

.article-content section blockquote {
    padding: 10px 10px 10px 20px;
    margin-top: 20px;
    margin-bottom: 20px;
    border-width: 3px;
    border-top-style: none;
    border-right-style: none;
    border-bottom-style: none;
    border-left-style: solid;
    border-color: rgba(0, 0, 0, 0.4);
    border-radius: 0px;
    background: rgba(0, 0, 0, 0.05);
    overflow: auto;
}

.article-content section blockquote p {
    margin-top: 0px;
    margin-bottom: 0px;
    text-indent: 0em;
    padding: 8px 0px;
    line-height: 1.8em;
    letter-spacing: 0em;
}

.article-content section strong {
    font-weight: bold;
}

/* 通用Markdown样式 */
.article-content h1 {
    font-size: 2em;
    font-weight: bold;
    margin: 1em 0 0.5em;
    padding-bottom: 0.3em;
    border-bottom: 2px solid #e5e7eb;
}

.article-content h2 {
    font-size: 1.5em;
    font-weight: bold;
    margin: 1em 0 0.5em;
    padding-bottom: 0.3em;
    border-bottom: 1px solid #e5e7eb;
}

.article-content h3 {
    font-size: 1.25em;
    font-weight: bold;
    margin: 1em 0 0.5em;
}

.article-content h4 {
    font-size: 1.1em;
    font-weight: bold;
    margin: 1em 0 0.5em;
}

.article-content p {
    margin: 1em 0;
    line-height: 1.8;
}

.article-content ul,
.article-content ol {
    margin: 1em 0;
    padding-left: 2em;
    line-height: 1.8;
}

.article-content li {
    margin: 0.5em 0;
}

.article-content code {
    background: rgba(27, 31, 35, 0.05);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', Consolas, Monaco, monospace;
    font-size: 0.9em;
    color: #d73a49;
}

.article-content pre {
    background: #f6f8fa;
    padding: 16px;
    border-radius: 6px;
    overflow-x: auto;
    margin: 1em 0;
}

.article-content pre code {
    background: none;
    padding: 0;
    color: inherit;
    font-size: 0.85em;
}

.article-content blockquote {
    border-left: 4px solid #dfe2e5;
    padding: 0 1em;
    color: #6a737d;
    margin: 1em 0;
}

.article-content table {
    border-collapse: collapse;
    width: 100%;
    margin: 1em 0;
}

.article-content table th,
.article-content table td {
    border: 1px solid #dfe2e5;
    padding: 8px 12px;
}

.article-content table th {
    background: #f6f8fa;
    font-weight: bold;
}

.article-content img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 1em auto;
    border-radius: 6px;
}

.article-content a {
    color: #0366d6;
    text-decoration: none;
}

.article-content a:hover {
    text-decoration: underline;
}

.article-content hr {
    border: none;
    border-top: 2px solid #e5e7eb;
    margin: 2em 0;
}

/* 文章底部 */
.article-footer {
    margin-top: 60px;
    padding-top: 30px;
    border-top: 2px solid #f0f0f0;
    text-align: center;
}

.back-to-list {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: linear-gradient(135deg, #2c3e50 0%, #1a1a1a 100%);
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.back-to-list:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    color: white;
}

/* 加载动画 */
.loading {
    text-align: center;
    padding: 100px 20px;
}

.loading-spinner {
    display: inline-block;
    width: 50px;
    height: 50px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #333;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 目录导航 - 高优先级确保覆盖其他样式 */
.toc-sidebar {
    position: fixed !important;
    right: 20px !important;
    top: 100px !important;
    width: 200px !important;
    max-height: calc(100vh - 120px) !important;
    overflow-y: auto !important;
    transition: opacity 0.3s ease !important;
    z-index: 1 !important;
    display: block !important;
}

.toc-card {
    background: #fafafa;
    border-radius: 8px;
    padding: 12px 14px;
    border-left: 3px solid #2c3e50;
}

.toc-title {
    font-size: 13px;
    font-weight: 600;
    color: #333;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.toc-title i {
    font-size: 12px;
    color: #666;
}

.toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.toc-item {
    margin-bottom: 2px;
}

.toc-link {
    display: block;
    padding: 4px 8px;
    color: #666;
    text-decoration: none;
    font-size: 13px;
    border-radius: 4px;
    transition: all 0.2s;
    border-left: 2px solid transparent;
    line-height: 1.4;
}

.toc-link:hover {
    background: rgba(44, 62, 80, 0.05);
    color: #2c3e50;
}

.toc-link.active {
    background: rgba(44, 62, 80, 0.1);
    color: #2c3e50;
    font-weight: 600;
    border-left-color: #2c3e50;
}

/* 二级标题缩进 */
.toc-item.level-3 .toc-link {
    padding-left: 20px;
    font-size: 12px;
}

/* 滚动条样式 */
.toc-sidebar::-webkit-scrollbar {
    width: 3px;
}

.toc-sidebar::-webkit-scrollbar-thumb {
    background: #ccc;
    border-radius: 3px;
}

.toc-sidebar::-webkit-scrollbar-thumb:hover {
    background: #999;
}

/* 文章页面响应式 */
@media (max-width: 768px) {
    .article-container {
        padding: 20px 15px 60px;
    }

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

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