/* 전체 화면 설정 */
  body {
    margin: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: "Pretendard", "Noto Sans KR", sans-serif;
    background: linear-gradient(135deg, #74ABE2, #5563DE); /* 예쁜 그라데이션 */
    color: #fff;
  }

  /* 로그인 박스 */
  body > div {
    background: rgba(255, 255, 255, 0.95); /* 반투명 흰색 */
    color: #111;
    padding: 40px 50px;
    border-radius: 16px;
    box-shadow: 0 12px 40px rgba(0,0,0,0.25);
    text-align: center;
    max-width: 400px;
    width: 90%;
  }

  h2 {
    margin-bottom: 16px;
    font-size: 1.8rem;
  }

  p {
    margin-bottom: 24px;
    font-size: 1rem;
    color: #555;
  }

  /* 구글 로그인 버튼 */
  #googleLoginBtn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background-color: #4285F4; /* 구글 색상 */
    color: white;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    padding: 12px 24px;
    font-size: 1rem;
    cursor: pointer;
    transition: transform 0.1s, box-shadow 0.1s;
  }

  #googleLoginBtn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.15);
  }

  #googleLoginBtn:disabled {
    background-color: #a0c0f8;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
  }

  /* 반응형 */
  @media(max-width: 480px) {
    body > div {
      padding: 30px 20px;
      border-radius: 12px;
    }
  }