body {
    font-family: 'Helvetica', sans-serif;
    background-color: #fff0f5;
    color: #333;
    margin: 0;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  h2 {
    color: #ff69b4;
  }

  #username, #major, #sel_maj, input[type="submit"], #input, #send, #leave {
    font-size: 16px;
    padding: 10px;
    border-radius: 10px;
    border: 1px solid #ffb6c1;
    margin: 5px;
  }

  #username, #input {
    width: 300px;
  }

  input[type="submit"], #send, #leave {
    background-color: #ffb6c1;
    color: white;
    cursor: pointer;
    transition: background-color 0.3s;
  }

  input[type="submit"]:hover, #send:hover, #leave:hover {
    background-color: #ff69b4;
  }

  #infoForm {
    margin-bottom: 20px;
  }

  #status {
    margin: 10px 0;
    font-weight: bold;
    color: #cc3366;
  }

  #chat {
    width: 100%;
    max-width: 400px;
    background-color: white;
    border: 2px solid #ffb6c1;
    border-radius: 10px;
    padding: 15px;
    box-shadow: 0 0 10px rgba(255, 105, 180, 0.2);
  }

  #messages {
    height: 200px;
    overflow-y: auto;
    background-color: #fffafd;
    border: 1px solid #ffe4e1;
    border-radius: 8px;
    padding: 10px;
    margin-bottom: 10px;
  }

  #messages div {
    margin-bottom: 8px;
  }

  #inputArea {
    display: flex;
    gap: 10px;
  }

  #authSection {
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: #fffafd;
    border: 2px solid #ffb6c1;
    border-radius: 15px;
    padding: 20px;
    margin: 20px 0;
    box-shadow: 0 0 10px rgba(255, 105, 180, 0.2);
    max-width: 400px;
    width: 100%;
  }
  
  #authSection input[type="email"],
  #authSection input[type="password"],
  #authSection input[type="text"] {
    font-size: 16px;
    padding: 10px;
    border-radius: 10px;
    border: 1px solid #ffb6c1;
    margin: 8px 0;
    width: 90%;
  }
  
  #authSection button {
    background-color: #ffb6c1;
    color: white;
    font-size: 16px;
    padding: 10px;
    margin: 5px 0;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    width: 95%;
    transition: background-color 0.3s;
  }
  
  #logoutBtn {
    background-color: #ffb6c1;
    color: white;
    font-size: 16px;
    padding: 10px;
    margin: 5px 0;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    width: 400px;
    transition: background-color 0.3s;
  }

  #authSection button:hover, #logoutBtn:hover {
    background-color: #ff69b4;
  }

@media (max-width: 600px) {
  body {
    padding: 10px;
  }

  h2 {
    font-size: 1.5em;
  }

  #username, #major, #sel_maj, input[type="submit"], #input, #send, #leave {
    font-size: 14px;
    padding: 8px;
    width: 90%;
  }

  #authSection input[type="email"],
  #authSection input[type="password"],
  #authSection input[type="text"],
  #authSection button {
    font-size: 14px;
    padding: 8px;
    width: 95%;
  }

  #chat {
    padding: 10px;
  }

  #messages {
    height: 180px;
  }

  #logoutBtn {
    width: 95%;
    font-size: 14px;
    padding: 8px;
  }
}

@media (max-width: 400px) {
  h2 {
    font-size: 1.3em;
  }

  #messages {
    height: 150px;
  }
}