* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: all 0.3s ease;
}

html, body {
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: #333;
    line-height: 1.5;
    background-color: #f5f5f5;
    overflow: hidden;
}

.container {
    display: flex;
    height: 100vh;
    width: 100%;
}

/* 左侧边栏 */
.sidebar {
    width: 240px;
    min-width: 240px;
    background-color: #fff;
    border-right: 1px solid #e8e8e8;
    padding: 16px 0;
    overflow-y: auto;
    position: relative;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    height: 100vh;
}

.sidebar.collapsed {
    width: 60px;
    min-width: 60px;
}

/* Logo区域 */
.logo {
    padding: 0 16px 16px;
    border-bottom: 1px solid #f0f0f0;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    width: 100%;
}

.logo img {
    height: 80px;
    transition: all 0.3s ease;
}

.sidebar.collapsed .logo img {
    width: 30px;
    height: 30px;
}

.toggle-sidebar:hover {
    background: #f5f5f5;
}

.toggle-sidebar i {
    font-size: 12px;
    color: #666;
}

/* 菜单区域 */
.menu {
    padding: 0 12px;
    flex-grow: 1;
    overflow-y: auto;
    width: 100%;
}

.menu-title {
    font-size: 14px;
    color: #000; /* 黑色 */
    margin: 16px 0 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

.sidebar.collapsed .menu-title {
    display: none;
}

/* 菜单项 - 关键修改部分 */
.menu-item {
    padding: 8px 12px;
    border-radius: 4px;
    margin-bottom: 4px;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    white-space: nowrap;
    color: #000; /* 纯黑色 */
    text-decoration: none;
}

/* 彻底禁用所有状态的颜色变化 */
.menu-item,
.menu-item:link,
.menu-item:visited,
.menu-item:hover,
.menu-item:active,
.menu-item:focus {
    color: #000 !important; /* 强制所有状态黑色 */
    text-decoration: none;
}

.sidebar.collapsed .menu-item {
    justify-content: center;
    padding: 8px 0;
}

.sidebar.collapsed .menu-item span {
    display: none;
}

/* 仅保留背景色变化 */
.menu-item:hover {
    background-color: #f0f0f0;
}

.menu-item.active {
    background-color: #e6f7ff;
    /* 移除文字颜色变化，仅保留背景色 */
}

.menu-item i {
    margin-right: 8px;
    font-size: 16px;
    color: #000; /* 图标也改为黑色 */
}

.sidebar.collapsed .menu-item i {
    margin-right: 0;
}

/* 文章标题样式 */
.article-title {
    display: inline-block;
    max-width: 140px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    vertical-align: middle;
}

/* 底部版权信息 */
.sidebar-footer {
    margin-top: auto;
    padding: 12px 8px;
    border-top: 1px solid #f0f0f0;
    font-size: 11px;
    color: #999;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 95%;
}

.sidebar.collapsed .sidebar-footer {
    padding: 8px 2px;
    font-size: 10px;
}

.sidebar.collapsed .sidebar-footer p {
    display: none;
}

.sidebar.collapsed .sidebar-footer:after {
    content: "v3.2.1";
    display: block;
}

/* 内容区域 */
.content {
    flex: 1;
    min-width: 0;
    padding: 0;
    background-color: #fff;
    overflow-y: auto;
    position: relative;
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.header {
    padding: 16px 24px;
    border-bottom: 1px solid #f0f0f0;
    background: #fff;
    position: sticky;
    top: 0;
    z-index: 10;
}

.breadcrumb {
    color: #999;
    font-size: 14px;
}

.breadcrumb a {
    color: #1890ff;
    text-decoration: none;
}

.content-iframe {
    width: 100%;
    flex-grow: 1;
    border: none;
}