body {
      margin: 0;
      font-family: 'Segoe UI', sans-serif;
      background: linear-gradient(135deg, #0f172a, #1e293b);
      color: #fff;
      display: flex;
      justify-content: center;
      align-items: flex-start;
      padding: 20px;
      min-height: 100vh;
    }

    .container {
      position: fixed;
      bottom: 20px;
      width: 80%;
      max-width: 500px;
      background: rgba(255, 255, 255, 0.05);
      border-radius: 12px;
      padding: 15px;
      box-shadow: 0 0 20px rgba(0, 0, 0, 0.4);
    }

    .containe {
      width: 100%;
      height: 100vh;
      display: flex;
      flex-direction: column;
      background: rgba(0, 0, 0, 0.3);
      box-shadow: 0 0 20px rgba(0, 0, 0, 0.4);
    }

    h1,
    h2 {
      text-align: center;
    }

    button {
      background: #2563eb;
      border: none;
      color: white;
      padding: 10px 14px;
      border-radius: 6px;
      cursor: pointer;
      font-size: 15px;
      margin-top: 8px;
      width: 100%;
    }

    button:hover {
      background: #1d4ed8;
    }

    textarea {
      width: 100%;
      padding: 8px;
      border-radius: 6px;
      border: none;
      outline: none;
      margin-top: 6px;
      font-size: 14px;
      box-sizing: border-box;
    }

    input {
      width: 100%;
      padding: 0 15px;
      border-radius: 20px;
      border: none;
      outline: none;
      margin-top: 6px;
      font-size: 14px;
      box-sizing: border-box;
    }

    .copy-btn {
      background: #10b981;
      margin-top: 5px;
    }

    .copy-btn:hover {
      background: #059669;
    }

    .hidden {
      display: none;
    }

    .badge {
      display: inline-block;
      padding: 4px 10px;
      border-radius: 20px;
      font-size: 12px;
      color: white;
    }

    .badge.online {
      background: #22c55e;
    }

    #chat {
      flex: 1;
      overflow-y: auto;
      padding: 5px 10px;
      font-size: 16px;
      display: flex;
      flex-direction: column;
      /* padding-bottom: 60px; */
    }

    #chat div {
      word-wrap: break-word;
      overflow-wrap: break-word;
      max-width: 80%;
      padding: 8px;
      border-radius: 12px;
      display: inline-block;
    }

    /* Small gap if same sender */
    #chat .me+.me,
    #chat .other+.other {
      margin-top: 3px;
    }

    /* Big gap if sender changes */
    #chat .me+.other,
    #chat .other+.me {
      margin-top: 10px;
    }

    .me {
      text-align: left;
      color: #4ade80;
      background: rgba(74, 222, 128, 0.2);
      /* light green bubble */
      align-self: flex-end;
      /* right side */
    }

    .other {
      text-align: left;
      color: #38bdf8;
      background: rgba(56, 189, 248, 0.2);
      /* light blue bubble */
      align-self: flex-start;
      /* left side */
    }

    .typing {
      margin-top: 3px;
      text-align: left;
      color: #94a3b8;
      font-style: italic;
      background: rgba(56, 189, 248, 0.2);
      align-self: flex-start;
    }

    #sendBtn {
      background: #2563eb;
      border: none;
      color: white;
      padding: 10px 14px;
      border-radius: 20px;
      cursor: pointer;
      font-size: 15px;
      font-weight: bold;
      margin-top: 8px;
      /* width: 100%; */
    }

    .chat-input {
      display: flex;
      gap: 6px;
      padding: 5px 10px;
    }

    .chat-input input {
      flex: 1;
    }

    .chat-input button {
      width: auto;
    }

    .chat-header {
      padding: 10px;
      background: rgba(0, 0, 0, 0.3);
      text-align: center;
    }

    .close-btn {
      position: absolute;
      top: 8px;
      right: 12px;
      background: none;
      border: none;
      font-size: 22px;
      font-weight: bold;
      color: red;
      cursor: pointer;
    }

    .close-btn:hover {
      color: darkred;
    }

    footer {
      text-align: center;
      margin-top: 15px;
      font-size: 12px;
      color: #777;
    }

    @media (max-width: 600px) {
      body {
        padding: 0;
      }
    }