var waitTime = 20;
            var buttonText = "Download";
            var downloaddoes = "If the download does not start automatically";
            var file_url = "https://www.mediafire.com/file/33ynlk2dq13dvqv/Zeta+Break-APKLULU.COM.zip/file";
            var countdownActive = false;
            var countdownInterval;


            function startCountdown() {
                if (!countdownActive) {
                    countdownActive = true;
                    countdownInterval = setInterval(function() {
                        if (document.visibilityState === "visible") {
                            waitTime--;
                            document.getElementById('time-left').textContent = waitTime;


                            if (waitTime <= 0) {
                                clearInterval(countdownInterval);
                                document.getElementById('waiting-time').style.display = 'none';

                                const downloadHTML = `
                                    <ul id="appDetail-otherdown" class="refe-button">
                                        <!-- Nút tải xuống -->
                                        <div id="download-container">
                                            <li id="download-btn" class="refe-button-item refe-button-gocolor">
                                                <a href="https://apklulu.com/zeta-break/download" class="refe-button-con" rel="nofollow">
                                                    <div class="item-all">
                                                        <div class="button-item-text">Download</div>
                                                    </div>
                                                </a>
                                            </li>
                                        </div>
                                    </ul>
                                `;

                                document.getElementById('download-container').innerHTML = downloadHTML;
                            }
                        }
                    }, 1000);
                }
            }


            document.addEventListener('DOMContentLoaded', function() {
                const observerTarget = document.getElementById('download-container');

                if (observerTarget) {
                    const observer = new IntersectionObserver(function(entries) {
                        entries.forEach(entry => {
                            if (entry.isIntersecting && document.visibilityState ===
                                "visible") {

                                startCountdown();
                                observer.disconnect();
                            }
                        });
                    }, {
                        root: null,
                        threshold: 0.1
                    });

                    observer.observe(observerTarget);
                }
            });
            document.addEventListener("visibilitychange", function() {
                if (document.visibilityState === "hidden" && countdownActive) {
                    clearInterval(countdownInterval);
                    countdownActive = false;
                } else if (document.visibilityState === "visible" && !countdownActive && waitTime > 0) {
                    startCountdown();
                }
            });