body { font-family: Arial, sans-serif; display: flex; justify-content: center; align-items: center; min-height: 100vh; background-color: #f4f4f4; }
        .login-container { background-color: #fff; padding: 20px; border-radius: 8px; box-shadow: 0 0 10px rgba(0,0,0,0.1); }
        .login-container h2 { text-align: center; margin-bottom: 20px; }
        .login-container label { display: block; margin-bottom: 5px; }
        .login-container input[type="text"], .login-container input[type="password"] { width: 100%; padding: 8px; margin-bottom: 10px; border: 1px solid #ddd; border-radius: 4px; }
        .login-container button { width: 100%; padding: 10px; background-color: #007bff; color: white; border: none; border-radius: 4px; cursor: pointer; }
        .login-container button:hover { background-color: #0056b3; }
        .error-message { color: red; text-align: center; margin-bottom: 15px; }