body {
      margin: 0;
      font-family: Arial, sans-serif;
      background-color: #121212; /* dark background */
      color: #fff;
      display: flex;
      flex-direction: column;
      height: 100vh;
    }

    /* Header */
    .header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background-color: #000;
      padding: 10px 15px;
      border-bottom: 1px solid #222;
    }
    .header-left {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .header-left .close-btn {
      font-size: 18px;
      cursor: pointer;
    }
    .title {
      display: flex;
      flex-direction: column;
    }
    .title h1 {
      font-size: 16px;
      margin: 0;
    }
    .title span {
      font-size: 12px;
      color: #aaa;
    }
    .menu-btn {
      font-size: 20px;
      cursor: pointer;
    }

    /* Info banner */
    .info-banner {
      background-color: #5a5436; /* muted olive/brown */
      margin: 10px;
      padding: 10px;
      border-radius: 8px;
      font-size: 14px;
    }
    .info-banner a {
      color: #ccc;
      text-decoration: underline;
      margin-left: 5px;
    }

    /* Chat area */
    .chat-area {
      flex: 1;
      padding: 15px;
      overflow-y: auto;
    }

    /* Input area */
    .input-bar {
      display: flex;
      align-items: center;
      padding: 10px;
      border-top: 1px solid #222;
      background-color: #121212;
    }
    .input-bar .icon {
      font-size: 20px;
      margin-right: 10px;
      cursor: pointer;
    }
    .input-bar input {
      flex: 1;
      padding: 10px;
      border: none;
      border-radius: 20px;
      outline: none;
      background-color: #1e1e1e;
      color: #fff;
    }
    .send-btn {
     background-color: #787a7d;
      border: none;
      border-radius: 50%;
      width: 40px;
      height: 40px;
      margin-left: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: white;
      font-size: 16px;
    }