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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: #f5f6f7;
    line-height: 1.6;
}

/* 顶栏样式 */
.top-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background-color: #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 1000;
}

/* Logo样式 */
.logo-container {
    flex-shrink: 0;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #0f88eb;
    text-decoration: none;
    transition: color 0.3s ease;
}

.logo:hover {
    color: #0c74c9;
}

/* 导航菜单样式 */
.nav-menu {
    display: flex;
    gap: 30px;
    margin-left: 40px;
}

.nav-item {
    color: #333;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    position: relative;
    transition: color 0.3s ease;
}

.nav-item:hover {
    color: #0f88eb;
}

.nav-item.active {
    color: #0f88eb;
}

.nav-item.active::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: #0f88eb;
}

/* 搜索栏样式 */
.search-container {
    flex: 1;
    max-width: 400px;
    margin: 0 30px;
    position: relative;
}

.search-input {
    width: 100%;
    height: 40px;
    padding: 0 45px 0 15px;
    border: 1px solid #e1e5e9;
    border-radius: 20px;
    background-color: #f5f6f7;
    font-size: 14px;
    outline: none;
    transition: all 0.3s ease;
}

.search-input:focus {
    background-color: #fff;
    border-color: #0f88eb;
    box-shadow: 0 0 0 2px rgba(15, 136, 235, 0.1);
}

.search-btn {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #9ca3af;
    font-size: 16px;
    cursor: pointer;
    transition: color 0.3s ease;
}

.search-btn:hover {
    color: #0f88eb;
}

/* 功能按钮样式 */
.action-buttons {
    display: flex;
    gap: 20px;
    margin-right: 20px;
}

.action-btn {
    position: relative;
    background: none;
    border: none;
    color: #6b7280;
    font-size: 20px;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.action-btn:hover {
    background-color: #f5f6f7;
    color: #0f88eb;
}

.badge {
    position: absolute;
    top: -2px;
    right: -2px;
    min-width: 18px;
    height: 18px;
    padding: 0 6px;
    background-color: #ff4d4f;
    color: #fff;
    font-size: 12px;
    font-weight: 500;
    line-height: 18px;
    text-align: center;
    border-radius: 9px;
    white-space: nowrap;
}

/* 登录按钮样式 */
.login-container {
    flex-shrink: 0;
}

.login-btn {
    display: inline-block;
    padding: 8px 20px;
    background-color: #0f88eb;
    color: white;
    text-decoration: none;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.login-btn:hover {
    background-color: #0c74c9;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(15, 136, 235, 0.2);
}

/* 内容区域样式 */
.content {
    margin-top: 80px;
    padding: 20px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .search-container {
        max-width: 300px;
    }
    
    .login-btn {
        padding: 6px 16px;
        font-size: 13px;
    }
}

@media (max-width: 768px) {
    .top-bar {
        padding: 0 15px;
    }
    
    .nav-menu {
        gap: 20px;
        margin-left: 20px;
    }
    
    .search-container {
        max-width: 200px;
        margin: 0 20px;
    }
    
    .action-buttons {
        gap: 15px;
        margin-right: 15px;
    }
}

@media (max-width: 640px) {
    .search-container {
        display: none;
    }
    
    .nav-menu {
        gap: 15px;
        margin-left: 15px;
    }
    
    .login-btn {
        padding: 5px 12px;
        font-size: 12px;
        white-space: nowrap;
    }
}

/* 左侧边栏样式 */
.sidebar {
    position: fixed;
    top: 60px; /* 顶栏高度 */
    left: 0;
    bottom: 0;
    width: 240px;
    background-color: #fff;
    box-shadow: 1px 0 3px rgba(0, 0, 0, 0.05);
    padding: 20px 0;
    overflow: hidden;
    transition: width 0.3s ease;
    z-index: 900;
    display: flex;
    align-items: center;
}

/* 侧边栏内容区域 */
.sidebar-content {
    flex: 1;
    padding: 0 20px;
    height: 100%;
    overflow-y: auto;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    width: calc(100% - 10px);
}

/* 侧边栏折叠状态 */
.sidebar.collapsed {
    width: 0;
    overflow: hidden;
}

/* 折叠时隐藏内容 */
.sidebar.collapsed .sidebar-content {
    opacity: 0;
    visibility: hidden;
    width: 0;
    padding: 0;
    transition: all 0.3s ease;
}

/* 侧边栏链接样式 */
.sidebar-item {
    display: block;
    padding: 12px 15px;
    color: #333;
    text-decoration: none;
    font-size: 15px;
    border-radius: 8px;
    margin-bottom: 8px;
    transition: all 0.3s ease;
}

.sidebar-item:hover {
    background-color: #f5f6f7;
    color: #0f88eb;
}

/* 侧边栏分组样式 */
.sidebar-group {
    margin-bottom: 8px;
}

/* 分组标题样式 */
.sidebar-group-title {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 15px;
    color: #333;
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    background: none;
    border: none;
    cursor: pointer;
    border-radius: 8px;
    margin-bottom: 4px;
    transition: all 0.3s ease;
    text-align: left;
    /* 增加标题文本和按钮之间的间距 */
    gap: 10px;
}

.sidebar-group-title:hover {
    background-color: #f5f6f7;
    color: #0f88eb;
}

/* 子菜单样式 */
.sidebar-submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease;
    opacity: 0;
    padding-left: 10px;
}

.sidebar-submenu.expanded {
    max-height: 1000px;
    opacity: 1;
}

/* 子分组样式 */
.sidebar-subgroup {
    margin-bottom: 6px;
}

/* 子分组标题样式 */
.sidebar-subgroup-title {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 15px;
    color: #555;
    text-decoration: none;
    font-size: 14px;
    background: none;
    border: none;
    cursor: pointer;
    border-radius: 6px;
    margin-bottom: 4px;
    transition: all 0.3s ease;
    text-align: left;
}

.sidebar-subgroup-title:hover {
    background-color: #f0f2f5;
    color: #0f88eb;
}

/* 子菜单列表样式 */
.sidebar-submenu-list {
    list-style: none;
    padding-left: 15px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease;
    opacity: 0;
}

.sidebar-submenu-list.expanded {
    max-height: 600px;
    opacity: 1;
}

/* 子菜单项样式 */
.sidebar-submenu-item {
    display: block;
    padding: 8px 12px;
    color: #666;
    text-decoration: none;
    font-size: 13px;
    border-radius: 4px;
    margin-bottom: 2px;
    transition: all 0.3s ease;
    /* 移除文字截断，允许换行显示完整内容 */
    white-space: normal;
    line-height: 1.4;
}

.sidebar-submenu-item:hover {
    background-color: #f0f2f5;
    color: #0f88eb;
}

/* 侧边栏滚动条样式 */
.sidebar-content::-webkit-scrollbar {
    width: 4px;
}

.sidebar-content::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 2px;
}

.sidebar-content::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 2px;
}

.sidebar-content::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* 侧边栏切换按钮 - 独立于侧边栏 */
.sidebar-toggle {
    position: fixed;
    left: 240px; /* 默认在侧边栏右侧 */
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 60px;
    background-color: #fff;
    border: 1px solid #e1e5e9;
    border-left: none;
    border-radius: 0 15px 15px 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #6b7280;
    font-size: 14px;
    box-shadow: 2px 0 4px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    z-index: 1000;
}

/* 侧边栏折叠时，按钮移到最左侧 */
.sidebar.collapsed + .sidebar-toggle {
    left: 0;
    border-left: 1px solid #e1e5e9;
    border-radius: 15px;
}

.sidebar-toggle:hover {
    background-color: #f5f6f7;
    color: #0f88eb;
}

/* 内容区域适配 */
.content {
    margin-top: 80px;
    padding: 20px;
    margin-left: 240px;
    transition: margin-left 0.3s ease;
    /* 确保内容不会被固定按钮遮挡 */
    z-index: 1;
}

/* 侧边栏折叠时调整内容区域 */
.content.sidebar-collapsed {
    margin-left: 50px;
}

/* 侧边栏响应式设计 */
@media (max-width: 1024px) {
    .sidebar {
        width: 200px;
    }
    
    .sidebar-toggle {
        left: 200px;
    }
    
    .sidebar.collapsed + .sidebar-toggle {
        left: 0;
        border-radius: 15px;
    }
    
    .content {
        margin-left: 200px;
    }
    
    .content.sidebar-collapsed {
        margin-left: 0;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 0;
        overflow: hidden;
    }
    
    .sidebar.collapsed {
        width: 50px;
    }
    
    .sidebar.expanded {
        width: 180px;
    }
    
    .content {
        margin-left: 0;
    }
    
    .content.sidebar-collapsed {
        margin-left: 50px;
    }
    
    .content.sidebar-expanded {
        margin-left: 180px;
    }
}