(function () {
  if ("serviceWorker" in navigator) {
    window.addEventListener("load", function () {
      navigator.serviceWorker.register("/service-worker.js").catch(function (err) {
        console.error("서비스워커 등록 실패", err);
      });
    });
  }

  function isIos() {
    return /iphone|ipad|ipod/i.test(window.navigator.userAgent);
  }

  function isStandalone() {
    return (
      ("standalone" in window.navigator && window.navigator.standalone) ||
      window.matchMedia("(display-mode: standalone)").matches
    );
  }

  document.addEventListener("DOMContentLoaded", function () {
    var banner = document.getElementById("ios-install-banner");
    if (!banner) return;
    var dismissed = localStorage.getItem("iosInstallBannerDismissed");
    if (isIos() && !isStandalone() && !dismissed) {
      banner.style.display = "flex";
    }
  });

  window.dismissIosInstallBanner = function () {
    var banner = document.getElementById("ios-install-banner");
    if (banner) banner.style.display = "none";
    localStorage.setItem("iosInstallBannerDismissed", "1");
  };
})();