body {
    margin: 0;
    font-family: sans-serif;
    background: #111;
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
  }
  
  #landing {
    text-align: center;
  }
  
  #join-form input {
    padding: 10px;
    margin: 5px;
    border-radius: 5px;
    border: none;
  }
  
  #join-form button {
    padding: 10px 20px;
    margin-top: 10px;
    background: #28a745;
    border: none;
    border-radius: 5px;
    color: white;
    cursor: pointer;
  }
  
  #call {
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    background: black;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }
  
  video {
    max-width: 90%;
    max-height: 45vh;
    margin: 10px;
    background: #000;
    border: 1px solid #333;
  }
  
  #fullscreenBtn {
    padding: 8px 16px;
    background: #007bff;
    border: none;
    color: white;
    border-radius: 5px;
    cursor: pointer;
  }
  
  .hidden {
    display: none !important;
  }