body {
    font-family: Arial, sans-serif;
    text-align: center;
    padding: 2rem;
    font-family: sans-serif;
    padding: 20px;
    background: #f4f4f4;
  }
  button {
    margin: 0.5rem;
    padding: 0.7rem 1.5rem;
    font-size: 1rem;
  }

  h1 { font-size: 1.5rem; }

  #statusIndicator {
    margin: 10px 0;
    font-weight: bold;
  }

  .indicator {
    display: inline-block;
    width: 10px;
    height: 10px;
    margin-right: 6px;
    border-radius: 50%;
  }

  .idle { background: #aaa; }
  .listening { background: #f39c12; }
  .speaking { background: #3498db; }

  #listeningIcon {
    font-size: 1.2rem;
    margin-left: 8px;
  }

  .conversation {
    background: #fff;
    padding: 10px;
    margin-top: 15px;
    border-radius: 5px;
  }

  .line { margin: 4px 0; }
  .user { font-weight: bold; color: #2c3e50; }
  .ai { color: #34495e; }

  #waveform {
    margin-top: 10px;
    background: #fff;
    border-radius: 5px;
  }

  @keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
  }

  #avatar {
    font-size: 40px;
    margin-top: 15px;
  }

  #avatar.talking {
    animation: bounce 0.6s infinite;
    color: #3498db;
  }