let installPrompt = null;
			const installButton = document.querySelector("#install");

			window.addEventListener("beforeinstallprompt", (event) => {
			  event.preventDefault();
			  installPrompt = event;
			  installButton.removeAttribute("hidden");
			});
			installButton.addEventListener("click", async () => {
			  if (!installPrompt) {
				return;
			  }
			  const result = await installPrompt.prompt();
			  console.log("Install prompt was: ${result.outcome}");
			  disableInAppInstallPrompt();
			});

			function disableInAppInstallPrompt() {
			  installPrompt = null;
			  installButton.setAttribute("hidden", "");
			}
			
			window.addEventListener("appinstalled", () => {
			  disableInAppInstallPrompt();
			});

			function disableInAppInstallPrompt() {
			  installPrompt = null;
			  installButton.setAttribute("hidden", "");
			}
			
			window.addEventListener("beforeinstallprompt", async (event) => {
			  const relatedApps = await navigator.getInstalledRelatedApps();
			  const psApp = relatedApps.find((app) => app.id === "pazarax");
			  if (psApp) {
				event.preventDefault();
				alert("pazarax yüklü");
			  }
			});
			
			function getPWADisplayMode() {
			  if (document.referrer.startsWith("android-app://"))
				return "twa";
			  if (window.matchMedia("(display-mode: browser)").matches)
				return "browser";
			  if (window.matchMedia("(display-mode: standalone)").matches)
				return "standalone";
			  if (window.matchMedia("(display-mode: minimal-ui)").matches)
				return "minimal-ui";
			  if (window.matchMedia("(display-mode: fullscreen)").matches)
				return "fullscreen";
			  if (window.matchMedia("(display-mode: window-controls-overlay)").matches)
				return "window-controls-overlay";

			  return "unknown";
			}

			window.addEventListener("DOMContentLoaded", () => {
				document.getElementById("status").value = getPWADisplayMode();
				window.matchMedia("(display-mode: standalone)")
				.addEventListener("change", () => {
				  document.getElementById("status").value = getPWADisplayMode();
				});
			});
			
			
			
			/** UYANIK KALMA MODU **/
			statusElem=document.getElementById("statusElem");
			wakebutton=document.getElementById("wakebutton");
			sleepbutton=document.getElementById("sleepbutton");
			let wakeLock = null;
			if ("wakeLock" in navigator) {
			  isSupported = true;
			  statusElem.textContent = "Kapalı";
			  wakebutton.classList.remove("hidden");
			} else {
			  statusElem.textContent = "Desteklenmiyor";
			}
			
			function awake(){
				try {
					const awakeON = async function(a, b) {
					  wakeLock = await navigator.wakeLock.request("screen");
					  statusElem.textContent = "Açık";
					  wakebutton.classList.add("hidden");
					  sleepbutton.classList.remove("hidden");
					}
					awakeON();
				} catch (err) {
				  statusElem.textContent = `Hata : ${err.name}, ${err.message}`;
				}			  
				
			}
			function awakeoff(){
				wakeLock.release().then(() => {
					wakeLock = null;
					statusElem.textContent = "Kapalı";
					  sleepbutton.classList.add("hidden");
					  wakebutton.classList.remove("hidden");
				});
			}
			
			
			
			/** SANAL KLAVYE (Mobil)**/
			if ("virtualKeyboard" in navigator) {
				console.log("Klavye kullanılabilir");
				navigator.virtualKeyboard.overlaysContent = false; /* otomaik gizle */
				console.log("Klavye kontrolü devralındı");
				document.getElementById("vkeybon").classList.remove("hidden");
				const { x, y, width, height } = navigator.virtualKeyboard.boundingRect;
				console.log("Klavye Ölçüleri:", x, y, width, height);
				navigator.virtualKeyboard.addEventListener("geometrychange", (event) => {
					const { x, y, width, height } = event.target.boundingRect;
					console.log("Virtual keyboard geometry changed:", x, y, width, height);
				});
			}
			function vKeyshow(){
				vkeyboff.classList.remove("hidden");
				vkeybon.classList.add("hidden");
				navigator.virtualKeyboard.show();
			}
			function vKeyhide(){
				vkeybon.classList.remove("hidden");
				vkeyboff.classList.add("hidden");
				navigator.virtualKeyboard.hide();
			}