body {
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 100vh;
            margin: 0;
        }
        .login-card {
            width: 100%;
            max-width: 400px;
            text-align: center;
        }
        .login-logo {
            max-width: 200px;
            margin-bottom: 20px;
        }
        .form-group {
            text-align: left;
            margin-bottom: 15px;
        }
        .btn-block {
            width: 100%;
            margin-top: 10px;
        }