body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

.navbar {
    background-color: #007BFF;
    color: white;
    padding: 10px;
    display: flex;
    justify-content: space-between;
    display: flex;
    justify-content: center; /* 水平居中 */
    align-items: center; /* 垂直居中 */ 
} 

.sidebar {
    width: 200px;
    background-color: #343a40;
    color: white;
    position: fixed;
    top: 0;
    bottom: 0;
    padding: 1rem;
    transition: transform 0.3s ease;
}

.content {
    margin-left: 220px;
    padding: 1rem;
}

.search-container {
    display: flex;
    align-items: center;
}

.search-bar {
    padding: 5px;
    border: 1px solid #ccc;
    border-right: none; /* 去掉右边框 */
    border-radius: 4px 0 0 4px; /* 左侧圆角 */
    outline: none;
}

.search-button {
    padding: 5px 10px;
    border: 1px solid #ccc;
    border-left: none; /* 去掉左边框 */
    border-radius: 0 4px 4px 0; /* 右侧圆角 */
    background-color: #007BFF;
    color: white;
    cursor: pointer;
}

.search-button:hover {
    background-color: #0056b3;
}

.menu-item {
    margin: 1rem 0;
}

.logo {
    margin-right: 20px;
}

.logo-img {
    width: 100%;
    max-width: 50px; /* 设置最大宽度 */
    height: 25px; /* 保持宽高比 */
}

.user-avatar {
    margin-left: 20px;
    cursor: pointer;
}


.user-info {
    display: none;
    position: absolute;
    background-color: #f0f8ff;
    border: 1px solid #ccc;
    padding: 15px;
    z-index: 1000;
    width: 250px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    font-family: 'Arial', sans-serif;
    color: #333;
}

.user-info label {
    display: block;
    margin: 10px 0 5px;
}

.user-info input {
    width: 100%;
    padding: 5px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

.user-info button {
    padding: 5px 10px;
    background-color: #007BFF;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.user-info button:hover {
    background-color: #0056b3;
}


@media (max-width: 1920px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.active {
        transform: translateX(0);
    }
    .content {
        margin-left: 0;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.active {
        transform: translateX(0);
    }
    .content {
        margin-left: 0;
    }
    .logo {
        margin-top: 10px;
    }
    .search-button {
        margin-top: 5px;
        min-width: 90px;
    }
    .user-avatar {
        margin-top: 15px;
    }
    /* .navbar {
        justify-content: space-between;
    } */
    .search-bar {
        width: 200px;
    }
    .user-info {
        left: 50%;
        transform: translateX(-50%);
    }
}  

@media (max-width: 480px) {
    .navbar {
        /* flex-direction: column; */
        align-items: flex-start;
    }
    .search-bar {
        width: 100%;
        margin-top: 0.5rem;
    }
}
