OAuth ボタンコンポーネント

<div class="flex flex-col items-center justify-center min-h-screen bg-gray-100 dark:bg-gray-900">
    <h1 class="text-2xl font-bold mb-6 text-gray-800 dark:text-gray-200">Sign in with</h1>
    <div class="space-y-4">
        <a href="#" class="flex items-center justify-center w-64 px-4 py-2 text-white bg-blue-600 rounded-lg shadow-lg transform transition-all hover:-translate-y-1 hover:shadow-2xl hover:bg-blue-500 dark:bg-blue-700 dark:hover:bg-blue-600">
            <img src="https://picsum.photos/20/20?random=1" alt="Google" class="rounded-full mr-2" />
            Google
        </a>
        <a href="#" class="flex items-center justify-center w-64 px-4 py-2 text-white bg-blue-700 rounded-lg shadow-lg transform transition-all hover:-translate-y-1 hover:shadow-2xl hover:bg-blue-600 dark:bg-blue-800 dark:hover:bg-blue-700">
            <img src="https://picsum.photos/20/20?random=2" alt="Facebook" class="rounded-full mr-2" />
            Facebook
        </a>
        <a href="#" class="flex items-center justify-center w-64 px-4 py-2 text-white bg-blue-500 rounded-lg shadow-lg transform transition-all hover:-translate-y-1 hover:shadow-2xl hover:bg-blue-400 dark:bg-blue-600 dark:hover:bg-blue-500">
            <img src="https://picsum.photos/20/20?random=3" alt="Twitter" class="rounded-full mr-2" />
            Twitter
        </a>
        <a href="#" class="flex items-center justify-center w-64 px-4 py-2 text-white bg-blue-900 rounded-lg shadow-lg transform transition-all hover:-translate-y-1 hover:shadow-2xl hover:bg-blue-800 dark:bg-blue-900 dark:hover:bg-blue-800">
            <img src="https://picsum.photos/20/20?random=4" alt="LinkedIn" class="rounded-full mr-2" />
            LinkedIn
        </a>
    </div>
</div>
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