body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
  }
  .chat-container {
    width: 100%;
    max-width: 500px;
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    height: 80vh;
  }
  .chat-header {
    background: #6c63ff;
    color: white;
    padding: 15px;
    text-align: center;
    font-size: 18px;
  }
  .chat-messages {
    flex: 1;
    padding: 15px;
    overflow-y: auto;
    background-color: #f9f9f9;
  }
  .message {
    max-width: 80%;
    margin-bottom: 10px;
    padding: 10px;
    border-radius: 20px;
    clear: both;
  }
  .user-message {
    background: #e2ffc7;
    float: right;
    border-bottom-right-radius: 0;
  }
  .bot-message {
    background: #ffd3d3;
    float: left;
    border-bottom-left-radius: 0;
  }
  .chat-input {
    display: flex;
    padding: 10px;
    border-top: 1px solid #ddd;
    background: #f4f4f9;
  }
  .chat-input input {
    flex: 1;
    padding: 10px;
    font-size: 16px;
    border: 1px solid #ddd;
    border-radius: 20px;
  }
  .chat-input button {
    padding: 10px 20px;
    margin-left: 5px;
    background: #6c63ff;
    color: white;
    border: none;
    border-radius: 20px;
    cursor: pointer;
  }
  .chat-input button:hover {
    background: #5a54e7;
  }
  .intro-container {
    font-size: 18px;
    text-align: center;
  }
  .intro-container img {
    width: 50%;
    min-width: 300px;    
  }
  .container {
    position: relative;
    height: 100vh; /* 뷰포트 높이의 100% */
    overflow-y: auto; /* 세로 스크롤 허용 */
  }
  
  .content {
    padding-bottom: 60px; /* 버튼 높이만큼 여백 추가 */
  }
  
  .fixed-bottom {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 10px;
    background-color: #f8f8f8; /* 배경색 설정 */
    box-shadow: 0 -2px 5px rgba(0,0,0,0.1); /* 그림자 효과 */
  }
  
  .button {
    width: 100%;
    padding: 10px;
  }

  /* 스타일 지정시 id는 해시(#), class는 .을 사용한다 */
  #loader {
    font-size: 25px;
    text-align: center;
  }
  
  .kakao-ad {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 20px;
    min-width: 350px;
    min-height: 200px;
  }