/* ปรับแต่งไอคอน */
        .chat-icon-container {
            position: fixed;
            bottom: 145px; /* ระยะห่างจาก footer */
            right: 20px;
            width: 60px;
            height: 60px;
            z-index: 1000;
        }

        .chat-icon {
            width: 60px;
            height: 60px;
            background-color: #0084ff;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
            cursor: pointer;
            position: relative;
        }

        .chat-icon img {
            width: 35px;
            height: 35px;
        }

        .chat-icon:hover {
            background-color: #0069d9;
        }

        /* ปุ่มปิด */
        .close-btn {
            position: absolute;
            top: -8px;
            right: -8px;
            width: 20px;
            height: 20px;
            background-color: #ff4d4d;
            color: white;
            border: none;
            border-radius: 50%;
            font-size: 14px;
            font-weight: bold;
            cursor: pointer;
            display: flex;
            justify-content: center;
            align-items: center;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
        }

        .close-btn:hover {
            background-color: #d93636;
        }