body {
      background-color: #000;
      color: #e5e7eb;
      font-family: Arial, sans-serif;
      overflow: hidden;
    }
    #particles-js {
      position: fixed;
      width: 100%;
      height: 100%;
      z-index: -1;
    }
    .chat-container {
      max-width: 600px;
      margin: 50px auto;
      padding: 20px;
      background: rgba(0, 0, 0, 0.8);
      border-radius: 10px;
      box-shadow: 0 0 20px rgba(0, 255, 255, 0.5);
    }
    .chat-box {
      height: 400px;
      overflow-y: auto;
      border: 1px solid cyan;
      padding: 10px;
      background: rgba(0, 0, 0, 0.6);
      border-radius: 5px;
    }
    .message {
      margin: 10px 0;
      padding: 10px;
      border-radius: 5px;
      max-width: 80%;
    }
    .user {
      background: cyan;
      color: black;
      align-self: flex-end;
    }
    .bot {
      background: rgba(0, 255, 255, 0.2);
      color: cyan;
      align-self: flex-start;
    }
    .input-box {
      display: flex;
      margin-top: 10px;
    }
    .input-box input {
      flex-grow: 1;
      padding: 10px;
      border: 1px solid cyan;
      background: black;
      color: cyan;
      border-radius: 5px;
    }
    .input-box button {
      padding: 10px;
      background: cyan;
      border: none;
      cursor: pointer;
      color: black;
      margin-left: 5px;
      border-radius: 5px;
    }