侧边栏导航组件 - 灰度

<div class="flex h-screen bg-gray-100 dark:bg-gray-900">
    <!-- Sidebar -->
    <div class="flex flex-col w-64 bg-white dark:bg-gray-800 shadow-lg">
        <div class="flex items-center justify-center h-16 shadow-md">
            <span class="text-xl font-semibold text-gray-700 dark:text-white">Company Name</span>
        </div>
        <div class="flex flex-col flex-1 overflow-y-auto">
            <nav class="flex-1 px-2 py-4 bg-gray-200 dark:bg-gray-700">
                <a href="#" class="flex items-center px-4 py-2 text-gray-700 dark:text-gray-200 hover:bg-gray-300 dark:hover:bg-gray-600 rounded">
                    <svg class="h-5 w-5 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 6h16M4 12h16M4 18h16"></path></svg>
                    Dashboard
                </a>
                <a href="#" class="flex items-center px-4 py-2 mt-2 text-gray-700 dark:text-gray-200 hover:bg-gray-300 dark:hover:bg-gray-600 rounded">
                    <svg class="h-5 w-5 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 6v6m0 0v6m0-6h6m-6 0H6"></path></svg>
                    Projects
                </a>
                <a href="#" class="flex items-center px-4 py-2 mt-2 text-gray-700 dark:text-gray-200 hover:bg-gray-300 dark:hover:bg-gray-600 rounded">
                    <svg class="h-5 w-5 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M16 7a4 4 0 11-8 0 4 4 0 018 0zM12 14a7 7 0 00-7 7h14a7 7 0 00-7-7z"></path></svg>
                    Team
                </a>
                <a href="#" class="flex items-center px-4 py-2 mt-2 text-gray-700 dark:text-gray-200 hover:bg-gray-300 dark:hover:bg-gray-600 rounded">
                    <svg class="h-5 w-5 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M10.325 4.317c.426-1.756 2.924-1.756 3.35 0a1.724 1.724 0 002.573 1.066c1.543-.94 3.31.826 2.37 2.37a1.724 1.724 0 001.065 2.572c1.756.426 1.756 2.924 0 3.35a1.724 1.724 0 00-1.066 2.573c.94 1.543-.826 3.31-2.37 2.37a1.724 1.724 0 00-2.572 1.065c-.426 1.756-2.924 1.756-3.35 0a1.724 1.724 0 00-2.573-1.066c-1.543.94-3.31-.826-2.37-2.37a1.724 1.724 0 00-1.065-2.572c-1.756-.426-1.756-2.924 0-3.35a1.724 1.724 0 001.066-2.573c-.94-1.543.826-3.31 2.37-2.37.23-.14.447-.297.66-.48z"></path></svg>
                    Settings
                </a>
            </nav>
        </div>
    </div>
    <!-- Main content (placeholder) -->
    <div class="flex flex-col flex-1 overflow-y-auto">
        <div class="h-16 bg-white dark:bg-gray-800 shadow-md"></div>
        <div class="p-4">
            <!-- Your main content goes here -->
        </div>
    </div>
</div>