認証コンポーネント

                <div class="flex items-center justify-center min-h-screen bg-gray-900 text-white">
    <div class="w-full max-w-sm">
        <div class="mb-6 text-center">
            <h1 class="text-2xl font-bold">Authentication</h1>
            <p class="text-gray-400">Please sign in or create an account</p>
        </div>
        <div class="bg-gray-800 rounded-lg shadow-lg p-6">
            <form>
                <div class="mb-4">
                    <label for="email" class="block mb-2 text-sm font-medium">Email</label>
                    <input type="email" id="email" placeholder="[email protected]" class="w-full px-3 py-2 text-gray-900 bg-gray-200 rounded focus:outline-none focus:ring focus:ring-blue-500" required>
                </div>
                <div class="mb-4">
                    <label for="password" class="block mb-2 text-sm font-medium">Password</label>
                    <input type="password" id="password" placeholder="********" class="w-full px-3 py-2 text-gray-900 bg-gray-200 rounded focus:outline-none focus:ring focus:ring-blue-500" required>
                </div>
                <div class="flex items-center justify-between mb-6">
                    <div>
                        <input type="checkbox" id="remember" class="w-4 h-4 text-blue-600 border-gray-300 rounded focus:ring-blue-500">
                        <label for="remember" class="ml-2 text-sm">Remember me</label>
                    </div>
                    <a href="#" class="text-sm text-blue-500 hover:underline">Forgot password?</a>
                </div>
                <button type="submit" class="w-full py-2 mt-2 text-white bg-blue-600 rounded hover:bg-blue-700 focus:outline-none focus:ring focus:ring-blue-500">Sign In</button>
            </form>
            <div class="mt-4 text-center">
                <p class="text-gray-400">or</p>
                <button class="w-full py-2 mt-2 text-white bg-gray-700 rounded hover:bg-gray-600 focus:outline-none">Sign Up</button>
            </div>
        </div>
        <div class="mt-6 text-center">
            <img src="https://picsum.photos/100/100" alt="Random placeholder" class="rounded-full mx-auto mb-2">
            <p class="text-gray-400 text-sm">Random User Avatar</p>
        </div>
    </div>
</div>
              

                <div class="min-h-screen flex items-center justify-center bg-gray-100 dark:bg-gray-900 p-4">
    <div class="bg-white dark:bg-gray-800 rounded-lg shadow-md p-8 w-full max-w-sm">
        <h2 class="text-2xl font-semibold text-center text-gray-800 dark:text-gray-200">Welcome Back!</h2>
        <p class="text-gray-600 dark:text-gray-400 text-center mb-6">Please login to your account</p>
        <form>
            <div class="mb-4">
                <label class="block text-gray-700 dark:text-gray-300" for="email">Email</label>
                <input type="email" id="email" name="email" class="w-full p-2 border rounded-lg border-gray-300 dark:border-gray-600 bg-gray-50 dark:bg-gray-700 text-gray-800 dark:text-gray-200 focus:outline-none focus:border-blue-500 dark:focus:border-blue-400" required>
            </div>
            <div class="mb-6">
                <label class="block text-gray-700 dark:text-gray-300" for="password">Password</label>
                <input type="password" id="password" name="password" class="w-full p-2 border rounded-lg border-gray-300 dark:border-gray-600 bg-gray-50 dark:bg-gray-700 text-gray-800 dark:text-gray-200 focus:outline-none focus:border-blue-500 dark:focus:border-blue-400" required>
            </div>
            <button type="submit" class="w-full py-2 bg-blue-600 text-white rounded-lg hover:bg-blue-700 dark:bg-blue-500 dark:hover:bg-blue-400 transition duration-150">Login</button>
        </form>
        <p class="mt-4 text-center text-gray-600 dark:text-gray-400">Don't have an account? <a href="#" class="text-blue-600 dark:text-blue-400 hover:underline">Sign up</a></p>
    </div>
 </div>

<div class="min-h-screen flex items-center justify-center bg-gray-100 dark:bg-gray-900 p-4">
    <div class="bg-white dark:bg-gray-800 rounded-lg shadow-md p-8 w-full max-w-sm mt-8">
        <h2 class="text-2xl font-semibold text-center text-gray-800 dark:text-gray-200">Create Account</h2>
        <p class="text-gray-600 dark:text-gray-400 text-center mb-6">Join us today</p>
        <form>
            <div class="mb-4">
                <label class="block text-gray-700 dark:text-gray-300" for="username">Username</label>
                <input type="text" id="username" name="username" class="w-full p-2 border rounded-lg border-gray-300 dark:border-gray-600 bg-gray-50 dark:bg-gray-700 text-gray-800 dark:text-gray-200 focus:outline-none focus:border-blue-500 dark:focus:border-blue-400" required>
            </div>
            <div class="mb-4">
                <label class="block text-gray-700 dark:text-gray-300" for="email">Email</label>
                <input type="email" id="email" name="email" class="w-full p-2 border rounded-lg border-gray-300 dark:border-gray-600 bg-gray-50 dark:bg-gray-700 text-gray-800 dark:text-gray-200 focus:outline-none focus:border-blue-500 dark:focus:border-blue-400" required>
            </div>
            <div class="mb-6">
                <label class="block text-gray-700 dark:text-gray-300" for="password">Password</label>
                <input type="password" id="password" name="password" class="w-full p-2 border rounded-lg border-gray-300 dark:border-gray-600 bg-gray-50 dark:bg-gray-700 text-gray-800 dark:text-gray-200 focus:outline-none focus:border-blue-500 dark:focus:border-blue-400" required>
            </div>
            <button type="submit" class="w-full py-2 bg-blue-600 text-white rounded-lg hover:bg-blue-700 dark:bg-blue-500 dark:hover:bg-blue-400 transition duration-150">Sign Up</button>
        </form>
        <p class="mt-4 text-center text-gray-600 dark:text-gray-400">Already have an account? <a href="#" class="text-blue-600 dark:text-blue-400 hover:underline">Login</a></p>
    </div>
</div>

              

                <div class="min-h-screen flex items-center justify-center bg-gray-900 text-white">
  <div class="bg-gray-800 rounded-lg shadow-lg p-8 w-96">
    <h2 class="text-2xl font-bold mb-6 text-center">Welcome Back!</h2>
    <form>
      <div class="mb-4">
        <label class="block text-sm font-semibold mb-2" for="email">Email</label>
        <input type="email" id="email" class="w-full p-2 bg-gray-700 text-white rounded focus:outline-none focus:ring-2 focus:ring-indigo-500" placeholder="[email protected]" required />
      </div>
      <div class="mb-4">
        <label class="block text-sm font-semibold mb-2" for="password">Password</label>
        <input type="password" id="password" class="w-full p-2 bg-gray-700 text-white rounded focus:outline-none focus:ring-2 focus:ring-indigo-500" placeholder="********" required />
      </div>
      <button type="submit" class="w-full bg-indigo-600 hover:bg-indigo-500 text-white font-semibold py-2 rounded focus:outline-none focus:ring-2 focus:ring-indigo-500 transition duration-300">Login</button>
    </form>
    <div class="mt-4 text-center">
      <a href="#" class="text-sm text-indigo-400 hover:underline">Forgot your password?</a>
    </div>
    <div class="mt-6 border-t border-gray-600"></div>
    <h2 class="text-2xl font-bold mt-6 text-center">Create an Account</h2>
    <form>
      <div class="mb-4">
        <label class="block text-sm font-semibold mb-2" for="new-email">Email</label>
        <input type="email" id="new-email" class="w-full p-2 bg-gray-700 text-white rounded focus:outline-none focus:ring-2 focus:ring-indigo-500" placeholder="[email protected]" required />
      </div>
      <div class="mb-4">
        <label class="block text-sm font-semibold mb-2" for="new-password">Password</label>
        <input type="password" id="new-password" class="w-full p-2 bg-gray-700 text-white rounded focus:outline-none focus:ring-2 focus:ring-indigo-500" placeholder="********" required />
      </div>
      <div class="mb-4">
        <label class="block text-sm font-semibold mb-2" for="avatar">Upload Avatar</label>
        <input type="file" id="avatar" class="block w-full text-sm text-gray-500 bg-gray-600 rounded focus:outline-none" />
      </div>
      <button type="submit" class="w-full bg-indigo-600 hover:bg-indigo-500 text-white font-semibold py-2 rounded focus:outline-none focus:ring-2 focus:ring-indigo-500 transition duration-300">Sign Up</button>
    </form>
    <div class="mt-4 text-center">
      <small>Or sign up using</small>
      <div class="flex justify-center mt-2">
        <img src="https://picsum.photos/30/30" class="rounded-full mx-1" alt="Random Avatar" />
        <img src="https://picsum.photos/30/30" class="rounded-full mx-1" alt="Random Avatar" />
        <img src="https://picsum.photos/30/30" class="rounded-full mx-1" alt="Random Avatar" />
      </div>
    </div>
  </div>
</div>
              

                <div class="min-h-screen flex items-center justify-center bg-gray-900 p-4">
    <div class="bg-gray-800 rounded-lg shadow-lg p-6 max-w-sm w-full">
        <h2 class="text-white text-2xl mb-6 text-center">Welcome Back</h2>
        <form>
            <div class="mb-4">
                <label class="block text-gray-300 mb-2" for="email">Email</label>
                <input class="w-full px-4 py-2 rounded bg-gray-700 text-white focus:outline-none focus:ring focus:ring-indigo-500" type="email" id="email" placeholder="[email protected]" required>
            </div>
            <div class="mb-6">
                <label class="block text-gray-300 mb-2" for="password">Password</label>
                <input class="w-full px-4 py-2 rounded bg-gray-700 text-white focus:outline-none focus:ring focus:ring-indigo-500" type="password" id="password" placeholder="********" required>
            </div>
            <button class="w-full bg-indigo-600 hover:bg-indigo-500 text-white font-bold py-2 rounded focus:outline-none focus:ring focus:ring-indigo-400 transition duration-200">Login</button>
        </form>
        <div class="mt-4 text-center">
            <span class="text-gray-400">or</span>
        </div>
        <div class="mt-4">
            <p class="text-gray-400 text-center">Don't have an account? <a href="#" class="text-indigo-400 hover:underline">Sign up</a></p>
        </div>
    </div>
</div>

<div class="min-h-screen flex items-center justify-center bg-gray-900 p-4 mt-10">
    <div class="bg-gray-800 rounded-lg shadow-lg p-6 max-w-sm w-full">
        <h2 class="text-white text-2xl mb-6 text-center">Create Account</h2>
        <form>
            <div class="mb-4">
                <label class="block text-gray-300 mb-2" for="name">Name</label>
                <input class="w-full px-4 py-2 rounded bg-gray-700 text-white focus:outline-none focus:ring focus:ring-indigo-500" type="text" id="name" placeholder="John Doe" required>
            </div>
            <div class="mb-4">
                <label class="block text-gray-300 mb-2" for="email-signup">Email</label>
                <input class="w-full px-4 py-2 rounded bg-gray-700 text-white focus:outline-none focus:ring focus:ring-indigo-500" type="email" id="email-signup" placeholder="[email protected]" required>
            </div>
            <div class="mb-6">
                <label class="block text-gray-300 mb-2" for="password-signup">Password</label>
                <input class="w-full px-4 py-2 rounded bg-gray-700 text-white focus:outline-none focus:ring focus:ring-indigo-500" type="password" id="password-signup" placeholder="********" required>
            </div>
            <button class="w-full bg-indigo-600 hover:bg-indigo-500 text-white font-bold py-2 rounded focus:outline-none focus:ring focus:ring-indigo-400 transition duration-200">Sign Up</button>
        </form>
        <div class="mt-4 text-center">
            <span class="text-gray-400">or</span>
        </div>
        <div class="mt-4">
            <p class="text-gray-400 text-center">Already have an account? <a href="#" class="text-indigo-400 hover:underline">Login</a></p>
        </div>
    </div>
</div>