diff --git a/.vscode/extensions.json b/.vscode/extensions.json
new file mode 100644
index 0000000..954c783
--- /dev/null
+++ b/.vscode/extensions.json
@@ -0,0 +1,5 @@
+{
+    "recommendations": [
+        "sakunpanthi.gitea-integration"
+    ]
+}
\ No newline at end of file
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..8101bfe
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,3 @@
+{
+    "editor.fontSize": 18
+}
\ No newline at end of file
diff --git a/zuss/app.js b/zuss/app.js
index 237c337..2cec45f 100644
--- a/zuss/app.js
+++ b/zuss/app.js
@@ -1,321 +1,394 @@
 /* WFW-Aushang PWA
  * - Listet Dateien aus public WebDAV Share
  * - Öffnet PDFs über PDF.js
- * - Kioskiges Install/Update Overlay
+ * - Install/Update Overlay mit beforeinstallprompt.prompt()
  */
 
-const SHARE_TOKEN = "T9e7WESBXxy6rSD";
-const SHARE_ROOT = "/"; // im Share
-const DAV_BASE = `https://home.x-s.at/public.php/dav/files/${SHARE_TOKEN}`;
-
-const PDFJS_VIEWER = "https://home.x-s.at/pdfjs/web/viewer.html?file=";
-
-// Versioning für Overlay / Update-Erkennung
-const APP_VERSION = "2025.12.24.2";
-const DISMISS_KEY = "wfw_overlay_dismissed_for";
+const APP_VERSION = "2025.12.24.6";
+const TOKEN = "T9e7WESBXxy6rSD";
+const BASE = "https://home.x-s.at";
+const SHARE_DAV = `${BASE}/public.php/dav/files/${TOKEN}`;
+const PDFJS = `${BASE}/pdfjs/web/viewer.html?file=`;
 
+// relative to /zuss/
 const VERSION_URL = "./version.json";
+const LIST_START_DIR = "/"; // share root
 
-function $(id){ return document.getElementById(id); }
+let deferredInstallPrompt = null;
+let latestKnown = APP_VERSION;
 
-function applyTheme(theme){
-  document.documentElement.setAttribute("data-theme", theme);
-  localStorage.setItem("wfw_theme", theme);
+const $ = (id) => document.getElementById(id);
+
+function showError(msg) {
+  const el = $("err");
+  el.style.display = "block";
+  el.textContent = msg;
 }
-function initTheme(){
-  const saved = localStorage.getItem("wfw_theme");
-  if (saved) return applyTheme(saved);
-  const prefersDark = window.matchMedia && window.matchMedia("(prefers-color-scheme: dark)").matches;
-  applyTheme(prefersDark ? "dark" : "light");
+function clearError() {
+  const el = $("err");
+  el.style.display = "none";
+  el.textContent = "";
 }
+function setStatus(msg) { $("status").textContent = msg; }
 
-function isInstalledPWA(){
-  const m = window.matchMedia ? window.matchMedia("(display-mode: standalone)") : null;
-  const m2 = window.matchMedia ? window.matchMedia("(display-mode: fullscreen)") : null;
-  const isStandalone = !!(m && m.matches);
-  const isFullscreen = !!(m2 && m2.matches);
-  const isIOSStandalone = window.navigator.standalone === true;
-  return isStandalone || isFullscreen || isIOSStandalone;
-}
-
-function showOverlay({title, text, primaryText, hint=""}){
+function showOverlay(title, text, primaryText, showPrimary = true) {
   $("ovTitle").textContent = title;
   $("ovText").textContent = text;
   $("ovPrimaryBtn").textContent = primaryText;
-  $("ovHint").textContent = hint;
-  $("installOverlay").hidden = false;
+  $("ovPrimaryBtn").style.display = showPrimary ? "flex" : "none";
+  $("ovHint").style.display = "none";
+  $("installOverlay").style.display = "block";
 }
-function hideOverlay(){
-  $("installOverlay").hidden = true;
+function hideOverlay() {
+  $("installOverlay").style.display = "none";
 }
-function markOverlayDismissed(latestVersion){
-  sessionStorage.setItem(DISMISS_KEY, latestVersion || APP_VERSION);
-}
-function isOverlayDismissed(latestVersion){
-  const v = sessionStorage.getItem(DISMISS_KEY);
-  return v && v === (latestVersion || APP_VERSION);
+function showManualInstallHint() {
+  $("ovHint").style.display = "block";
+  $("ovHint").textContent =
+    "Hinweis: Falls kein Install-Dialog erscheint: Chrome Menü (⋮) → „App installieren“ / „Zum Startbildschirm hinzufügen“.";
 }
 
-let deferredPrompt = null;
-window.addEventListener("beforeinstallprompt", (e) => {
-  e.preventDefault();
-  deferredPrompt = e;
-});
+function compareVersions(a, b) {
+  // "2025.12.24.3" style; compare numeric segments
+  const pa = String(a).split(".").map(n => parseInt(n, 10) || 0);
+  const pb = String(b).split(".").map(n => parseInt(n, 10) || 0);
+  const len = Math.max(pa.length, pb.length);
+  for (let i = 0; i < len; i++) {
+    const da = pa[i] || 0, db = pb[i] || 0;
+    if (da > db) return 1;
+    if (da < db) return -1;
+  }
+  return 0;
+}
 
-// --- Service Worker ---
-async function registerSW(){
-  if (!("serviceWorker" in navigator)) return null;
+async function fetchLatestVersion() {
   try {
-    const reg = await navigator.serviceWorker.register("./sw.js");
-    // Optional: updaten, falls neue Version
-    try { await reg.update(); } catch {}
-    return reg;
-  } catch {
-    return null;
+    const r = await fetch(VERSION_URL, { cache: "no-store" });
+    if (!r.ok) throw new Error(`version.json HTTP ${r.status}`);
+    const j = await r.json();
+    if (j && j.version) {
+      latestKnown = j.version;
+      sessionStorage.setItem("wfw_latest", latestKnown);
+    }
+  } catch (e) {
+    // not fatal
+    console.warn("Could not fetch version.json:", e);
   }
 }
 
-// --- Install / Update Overlay ---
-async function checkInstallOrUpdateOverlay(reg){
-  let latest = APP_VERSION;
-  try {
-    const r = await fetch(VERSION_URL, { cache: "no-store" });
-    if (r.ok) {
-      const j = await r.json();
-      if (j && typeof j.version === "string") latest = j.version;
-    }
-  } catch {}
+function getInstalledVersion() {
+  return localStorage.getItem("wfw_installed_version") || null;
+}
+function markInstalledVersion(v) {
+  localStorage.setItem("wfw_installed_version", v);
+}
+function markOverlayDismissed(v) {
+  localStorage.setItem("wfw_dismissed_version", v);
+}
+function getDismissedVersion() {
+  return localStorage.getItem("wfw_dismissed_version") || null;
+}
 
-  const installed = isInstalledPWA();
-  const outdated = (latest !== APP_VERSION);
+async function checkInstallOrUpdateOverlay() {
+  await fetchLatestVersion();
 
-  // Wenn installiert UND aktuell -> kein Overlay
-  if (installed && !outdated) return;
-
-  // Wenn veraltet -> "Aktualisieren" erzwingen (kioskig)
-  if (outdated) {
-    showOverlay({
-      title: "Update verfügbar",
-      text: `Es gibt eine neue Version (${latest}). Bitte aktualisieren.`,
-      primaryText: "Aktualisieren",
-      hint: "Tipp: Nach dem Update wird die App neu geladen."
-    });
+  const installed = getInstalledVersion();
+  const dismissed = getDismissedVersion();
+  const isStandalone = window.matchMedia("(display-mode: standalone)").matches || window.navigator.standalone === true;
 
+  // If installed version < latest -> show update overlay
+  if (installed && compareVersions(installed, latestKnown) < 0) {
+    showOverlay(
+      "Update verfügbar",
+      `Neue Version verfügbar (${latestKnown}). Bitte updaten für die neuesten Fixes.`,
+      "Update jetzt"
+    );
     $("ovPrimaryBtn").onclick = async () => {
-      try { await reg?.update?.(); } catch {}
-      // Cache-bust / reload
+      try {
+        // ask SW to update + reload
+        const reg = await navigator.serviceWorker.getRegistration();
+        if (reg) await reg.update();
+      } catch {}
+      markInstalledVersion(latestKnown);
       location.reload();
     };
-
-    $("ovContinueBtn").onclick = () => hideOverlay();
+    $("ovContinueBtn").onclick = () => {
+      markOverlayDismissed(latestKnown);
+      hideOverlay();
+    };
     return;
   }
 
-  // Nicht installiert -> "Installieren" (oder Hinweis wenn Prompt fehlt)
-  const canInstall = !!deferredPrompt && !installed;
+  // If not installed (or standalone not detected), show install overlay until latest dismissed/installed
+  if (!installed && dismissed !== latestKnown && !isStandalone) {
+    showOverlay(
+      "WFW-Aushang",
+      "Installiere mich!",
+      "Installieren"
+    );
 
-  if (canInstall) {
-    showOverlay({
-      title: "App installieren",
-      text: "Installiert läuft WFW-Aushang schneller und im Kiosk-Modus.",
-      primaryText: "Installieren",
-      hint: ""
-    });
-
-    $("ovPrimaryBtn").onclick = async () => {
-      try {
-        deferredPrompt.prompt();
-        await deferredPrompt.userChoice;
-      } catch {}
-      deferredPrompt = null;
+    $("ovPrimaryBtn").onclick = async (e) => {
+      e.preventDefault(); e.stopPropagation();
+      await doInstall();
+    };
+    $("ovContinueBtn").onclick = (e) => {
+      e.preventDefault(); e.stopPropagation();
+      markOverlayDismissed(latestKnown);
       hideOverlay();
     };
-
-  } else {
-    // Fallback: wenn Chrome (noch) keinen Install-Prompt gibt
-    showOverlay({
-      title: "App installieren",
-      text: "Wenn der Install-Button fehlt: Chrome Menü (⋮) → „App installieren“.",
-      primaryText: "OK",
-      hint: ""
-    });
-
-    $("ovPrimaryBtn").onclick = () => hideOverlay();
   }
-
-  $("ovContinueBtn").onclick = () => hideOverlay();
 }
 
-// --- WebDAV Listing via PROPFIND ---
-async function propfind(url, depth=1){
-  const res = await fetch(url, {
+async function doInstall() {
+  if (!deferredInstallPrompt) {
+    showManualInstallHint();
+    return;
+  }
+  try {
+    deferredInstallPrompt.prompt(); // <-- IMPORTANT
+    const res = await deferredInstallPrompt.userChoice;
+    deferredInstallPrompt = null;
+
+    if (res && res.outcome === "accepted") {
+      // We'll also set installed version on appinstalled event
+      $("ovTitle").textContent = "Installiert ✓";
+      $("ovText").textContent = "Danke! Du kannst die App jetzt wie eine normale App starten.";
+      markInstalledVersion(latestKnown);
+      setTimeout(() => hideOverlay(), 800);
+    } else {
+      showManualInstallHint();
+    }
+  } catch (e) {
+    console.warn("Install prompt failed:", e);
+    showManualInstallHint();
+  }
+}
+
+/** WebDAV listing **/
+async function propfind(dir) {
+  const url = `${SHARE_DAV}${dir.endsWith("/") ? dir : dir + "/"}`;
+  const body = `<?xml version="1.0" encoding="utf-8"?>
+<d:propfind xmlns:d="DAV:">
+  <d:prop>
+    <d:displayname/>
+    <d:getcontenttype/>
+    <d:getcontentlength/>
+    <d:resourcetype/>
+    <d:getlastmodified/>
+  </d:prop>
+</d:propfind>`;
+  const r = await fetch(url, {
     method: "PROPFIND",
-    headers: { "Depth": String(depth) }
+    headers: { "Depth": "1", "Content-Type": "application/xml" },
+    body
   });
-
-  if (!res.ok) {
-    const t = await res.text().catch(()=> "");
-    throw new Error(`PROPFIND ${res.status} ${res.statusText} ${t.slice(0,200)}`);
+  if (!r.ok) {
+    const t = await r.text().catch(()=> "");
+    throw new Error(`PROPFIND ${r.status} ${r.statusText}\n${t.slice(0, 400)}`);
   }
-  return await res.text();
+  return await r.text();
 }
 
-function parseDavResponse(xmlText){
-  const parser = new DOMParser();
-  const xml = parser.parseFromString(xmlText, "application/xml");
-  const responses = [...xml.getElementsByTagNameNS("*","response")];
+function parseDavMultistatus(xmlText, dir) {
+  const p = new DOMParser();
+  const xml = p.parseFromString(xmlText, "application/xml");
+  const responses = Array.from(xml.getElementsByTagNameNS("DAV:", "response"));
 
-  const items = responses.map(r => {
-    const hrefEl = r.getElementsByTagNameNS("*","href")[0];
-    const href = hrefEl ? hrefEl.textContent : "";
+  const items = [];
 
-    const propstat = r.getElementsByTagNameNS("*","propstat")[0];
-    const prop = propstat ? propstat.getElementsByTagNameNS("*","prop")[0] : null;
+  for (const resp of responses) {
+    const hrefEl = resp.getElementsByTagNameNS("DAV:", "href")[0];
+    if (!hrefEl) continue;
+    const href = decodeURIComponent(hrefEl.textContent || "");
 
-    const isCollection = !!(prop && prop.getElementsByTagNameNS("*","collection")[0]);
+    // Skip the directory itself (first response)
+    const shareRoot = `/public.php/dav/files/${TOKEN}`;
+    if (href.endsWith(shareRoot + (dir === "/" ? "/" : dir))) continue;
 
-    const sizeEl = prop ? prop.getElementsByTagNameNS("*","getcontentlength")[0] : null;
-    const size = sizeEl ? parseInt(sizeEl.textContent || "0", 10) : 0;
+    const displayEl = resp.getElementsByTagNameNS("DAV:", "displayname")[0];
+    const name = displayEl ? (displayEl.textContent || "").trim() : "";
 
-    const modEl = prop ? prop.getElementsByTagNameNS("*","getlastmodified")[0] : null;
-    const lastmod = modEl ? modEl.textContent : "";
+    const rtEl = resp.getElementsByTagNameNS("DAV:", "resourcetype")[0];
+    const isCollection = rtEl && rtEl.getElementsByTagNameNS("DAV:", "collection").length > 0;
 
-    return { href, isCollection, size, lastmod };
-  });
+    const ctEl = resp.getElementsByTagNameNS("DAV:", "getcontenttype")[0];
+    const contentType = ctEl ? (ctEl.textContent || "").trim() : "";
 
+    const lmEl = resp.getElementsByTagNameNS("DAV:", "getlastmodified")[0];
+    const lastMod = lmEl ? (lmEl.textContent || "").trim() : "";
+
+    items.push({
+      href,
+      name: name || href.split("/").filter(Boolean).slice(-1)[0] || "",
+      isDir: !!isCollection,
+      contentType,
+      lastMod
+    });
+  }
+
+  // directories first, then by name
+  items.sort((a,b)=> (a.isDir === b.isDir ? a.name.localeCompare(b.name) : (a.isDir ? -1 : 1)));
   return items;
 }
 
-function humanSize(bytes){
-  if (!bytes || bytes < 1024) return bytes ? `${bytes} B` : "";
-  const kb = bytes/1024;
-  if (kb < 1024) return `${kb.toFixed(0)} KB`;
-  const mb = kb/1024;
-  return `${mb.toFixed(1)} MB`;
+function toPdfJsUrl(publicPath) {
+  // publicPath must be the share file path relative to share root, starting with "/"
+  const fileUrl = `${SHARE_DAV}${publicPath}`; // direct public dav file URL
+  return `${PDFJS}${encodeURIComponent(fileUrl)}#zoom=page-width`;
 }
 
-function safeDecode(s){
-  try { return decodeURIComponent(s); } catch { return s; }
-}
-
-function extractNameFromHref(href){
-  const noQuery = href.split("?")[0];
-  const parts = noQuery.split("/").filter(Boolean);
-  const last = parts[parts.length-1] || "";
-  return safeDecode(last);
-}
-
-function pdfUrlFromHref(href){
-  // href ist serverseitig percent-encoded; wir wollen eine saubere absolute URL für public.php/dav
-  // href kommt meist als /public.php/dav/files/<token>/... oder voll
-  if (href.startsWith("http")) return href;
-  return `https://home.x-s.at${href}`;
-}
-
-function openPdfInPdfJs(fileUrl){
-  // PDF.js erwartet file=ENCODED_URL
-  const full = PDFJS_VIEWER + encodeURIComponent(fileUrl) + "#zoom=page-width";
-  window.location.href = full;
-}
-
-function renderList(files){
+function renderList(items, currentDir) {
   const list = $("list");
   list.innerHTML = "";
 
-  if (!files.length) {
-    $("status").textContent = "Keine PDFs gefunden.";
+  // no folder browsing (kiosk): show only PDFs in root+subdirs? you asked "only directory content" of share root.
+  // We'll show only currentDir content; no folder nav UI.
+  const pdfs = items.filter(it => !it.isDir && (it.name.toLowerCase().endsWith(".pdf") || it.contentType.includes("pdf")));
+
+  if (pdfs.length === 0) {
+    setStatus("Keine PDFs gefunden.");
     return;
   }
 
-  for (const f of files) {
-    const row = document.createElement("div");
-    row.className = "item";
+  setStatus(`PDFs: ${pdfs.length}`);
 
-    const icon = document.createElement("div");
-    icon.className = "pdfIcon";
-    icon.textContent = "📄";
+  for (const it of pdfs) {
+    const a = document.createElement("a");
+    a.className = "row";
+    a.href = "#";
+    a.addEventListener("click", (e) => {
+      e.preventDefault();
 
-    const name = document.createElement("div");
-    name.className = "name";
-    name.textContent = f.name;
+      // Build relative path within share
+      // href includes /public.php/dav/files/<token>/...; we want path after that
+      const marker = `/public.php/dav/files/${TOKEN}`;
+      const idx = it.href.indexOf(marker);
+      let rel = "/";
+      if (idx >= 0) rel = it.href.slice(idx + marker.length);
+      if (!rel.startsWith("/")) rel = "/" + rel;
 
-    const meta = document.createElement("div");
-    meta.className = "meta";
-    meta.textContent = humanSize(f.size);
-
-    row.appendChild(icon);
-    row.appendChild(name);
-    row.appendChild(meta);
-
-    row.onclick = () => openPdfInPdfJs(f.url);
-
-    list.appendChild(row);
-  }
-
-  $("status").textContent = `PDFs: ${files.length}`;
-}
-
-async function load(){
-  $("status").textContent = "Lade Liste…";
-
-  const basePath = SHARE_ROOT.replace(/^\/?/, "/").replace(/\/?$/, "/");
-  const url = DAV_BASE + basePath; // z.B. .../TOKEN/
-
-  const xml = await propfind(url, 1);
-  const items = parseDavResponse(xml);
-
-  // Erstes Element ist meistens das Verzeichnis selbst -> rausfiltern
-  const files = items
-    .filter(it => !it.isCollection)
-    .map(it => {
-      const name = extractNameFromHref(it.href);
-      return {
-        name,
-        size: it.size || 0,
-        url: pdfUrlFromHref(it.href)
-      };
-    })
-    .filter(f => f.name.toLowerCase().endsWith(".pdf"));
-
-  // Sortierung: nach Dateiname absteigend (oft Datum im Namen)
-  files.sort((a,b) => b.name.localeCompare(a.name, "de"));
-
-  renderList(files);
-}
-
-function closeAushang(){
-  // kiosk-typisch: zurück oder tab schließen (falls erlaubt)
-  try { window.close(); } catch {}
-  history.back();
-}
-
-// Boot
-document.addEventListener("DOMContentLoaded", async () => {
-  initTheme();
-
-  $("themeBtn").addEventListener("click", () => {
-    const cur = document.documentElement.getAttribute("data-theme") || "light";
-    applyTheme(cur === "dark" ? "light" : "dark");
-  });
-
-  $("refreshBtn").addEventListener("click", () => load());
-  $("closeBtn").addEventListener("click", closeAushang);
-
-  const reg = await registerSW();
-  await checkInstallOrUpdateOverlay(reg);
-
-  try {
-    await load();
-  } catch (e) {
-    $("status").textContent = "Fehler beim Laden der Liste.";
-    // In kiosk mode: Fehlertext kurz, Details nur im Overlay-Hint
-    showOverlay({
-      title: "Fehler",
-      text: "Die Liste konnte nicht geladen werden.",
-      primaryText: "OK",
-      hint: String(e).slice(0, 140)
+      window.location.href = toPdfJsUrl(rel);
     });
-    $("ovPrimaryBtn").onclick = () => hideOverlay();
-    $("ovContinueBtn").onclick = () => hideOverlay();
+
+    const ico = document.createElement("div");
+    ico.className = "ico";
+    ico.innerHTML = `<svg width="20" height="20" viewBox="0 0 24 24" fill="none">
+      <path d="M7 3h7l3 3v15a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2z" stroke="currentColor" stroke-width="2" opacity=".9"/>
+      <path d="M14 3v4h4" stroke="currentColor" stroke-width="2" opacity=".9"/>
+      <path d="M7.5 14.5c2-2.5 3.5-5 4.2-7.5 1.1 3.8 2.8 7 4.8 9.5" stroke="currentColor" stroke-width="2" opacity=".9"/>
+    </svg>`;
+
+    const mid = document.createElement("div");
+    const nm = document.createElement("div");
+    nm.className = "name";
+    nm.textContent = it.name;
+    const sub = document.createElement("div");
+    sub.className = "sub";
+    sub.textContent = it.lastMod ? it.lastMod : "";
+    mid.appendChild(nm);
+    mid.appendChild(sub);
+
+    const badge = document.createElement("div");
+    badge.className = "badge";
+    badge.textContent = "PDF";
+
+    a.appendChild(ico);
+    a.appendChild(mid);
+    a.appendChild(document.createElement("div")).className = "spacer";
+    a.appendChild(badge);
+
+    list.appendChild(a);
   }
-});
\ No newline at end of file
+}
+
+async function loadList() {
+  clearError();
+  setStatus("Lade Liste…");
+  try {
+    const xml = await propfind(LIST_START_DIR);
+    const items = parseDavMultistatus(xml, LIST_START_DIR);
+    renderList(items, LIST_START_DIR);
+  } catch (e) {
+    console.error(e);
+    setStatus("Fehler");
+    showError(String(e && e.message ? e.message : e));
+  }
+}
+
+async function registerSW() {
+  if (!("serviceWorker" in navigator)) return;
+  try {
+    const reg = await navigator.serviceWorker.register("./sw.js", { scope: "./" });
+    // Trigger update check
+    reg.update().catch(()=>{});
+  } catch (e) {
+    console.warn("SW register failed:", e);
+  }
+}
+
+function applyTheme(t){
+  document.documentElement.setAttribute("data-theme", t);
+  localStorage.setItem("wfw_theme", t);
+  $("themeBtn").textContent = t === "dark" ? "🌙 Dunkel" : "☀️ Hell";
+}
+
+function initTheme(){
+  const saved = localStorage.getItem("wfw_theme");
+  if (saved){
+    applyTheme(saved);
+  } else {
+    // Default: System
+    const prefersLight = window.matchMedia("(prefers-color-scheme: light)").matches;
+    applyTheme(prefersLight ? "light" : "dark");
+  }
+}
+
+
+window.addEventListener("appinstalled", () => {
+  // user installed the app
+  markInstalledVersion(latestKnown);
+  markOverlayDismissed(latestKnown);
+  hideOverlay();
+});
+
+window.addEventListener("beforeinstallprompt", (e) => {
+  // We want our own overlay, so we prevent default banner
+  e.preventDefault();
+  deferredInstallPrompt = e;
+  // Show overlay if not yet installed
+  checkInstallOrUpdateOverlay();
+});
+
+// Extra safety: capture clicks even if something gets weird on mobile
+document.addEventListener("click", (e) => {
+  const t = e.target;
+  if (!t) return;
+
+  if (t.id === "ovContinueBtn") {
+    e.preventDefault(); e.stopPropagation();
+    markOverlayDismissed(latestKnown);
+    hideOverlay();
+  }
+  if (t.id === "ovPrimaryBtn") {
+    // If handler was overwritten, still attempt install/update
+    // (doInstall will show manual hint if prompt not available)
+  }
+}, { capture: true });
+
+document.addEventListener("DOMContentLoaded", async () => {
+  $("refreshBtn").addEventListener("click", (e) => { e.preventDefault(); loadList(); });
+  $("closeBtn").addEventListener("click", (e) => {
+    e.preventDefault();
+    // Kiosk-ish: close tab if possible, else just go back
+    window.close();
+    setTimeout(() => { history.back(); }, 150);
+  });
+  initTheme();
+  $("themeBtn").addEventListener("click", () => {
+    const current = document.documentElement.getAttribute("data-theme") || "dark";
+    applyTheme(current === "dark" ? "light" : "dark");
+  }); 
+  await registerSW();
+  await checkInstallOrUpdateOverlay();
+  await loadList();
+});
diff --git a/zuss/index.html b/zuss/index.html
index bc6e45d..2cd8969 100644
--- a/zuss/index.html
+++ b/zuss/index.html
@@ -1,285 +1,173 @@
 <!doctype html>
-<html lang="de" translate="no">
+<html lang="de">
 <head>
   <meta charset="utf-8" />
-  <meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover" />
+  <meta name="viewport" content="width=device-width,initial-scale=1,viewport-fit=cover" />
+  <meta name="theme-color" content="#0b1020" />
+  <meta name="apple-mobile-web-app-capable" content="yes">
+  <meta name="mobile-web-app-capable" content="yes">
+
+  <link rel="manifest" href="./manifest.webmanifest">
+  <link rel="icon" href="./icons/icon-192.png">
+  <link rel="apple-touch-icon" href="./icons/icon-192.png">
 
   <title>WFW-Aushang</title>
 
-  <link rel="manifest" href="./manifest.webmanifest">
-  <meta name="theme-color" content="#0b1020">
-
-  <!-- iOS / PWA -->
-  <meta name="apple-mobile-web-app-capable" content="yes">
-  <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
-  <meta name="apple-mobile-web-app-title" content="WFW-Aushang">
-  <link rel="apple-touch-icon" href="./icons/icon-192.png">
-
   <style>
-    :root{
-      --bg: #f6f7fb;
-      --panel: rgba(255,255,255,.75);
-      --panelSolid: #ffffff;
-      --text: #0b1220;
-      --muted: rgba(11,18,32,.62);
-      --border: rgba(11,18,32,.12);
-      --shadow: 0 10px 30px rgba(11,18,32,.12);
-      --accent: #2563eb;
-      --btnText: #ffffff;
-      --glass: blur(12px);
+    :root,
+	:root[data-theme="dark"]{
+      --bg:#0b1020; --card:#121a33; --text:#e8eeff; --muted:#9fb0ff;
+      --line:rgba(255,255,255,.12); --btn:#2b60ff; --btn2:#1c254b;
+      --ok:#2bff9f; --warn:#ffd36b;
     }
-    [data-theme="dark"]{
-      --bg: #070a12;
-      --panel: rgba(17,24,39,.55);
-      --panelSolid: #0b1020;
-      --text: #e5e7eb;
-      --muted: rgba(229,231,235,.65);
-      --border: rgba(229,231,235,.14);
-      --shadow: 0 14px 40px rgba(0,0,0,.55);
-      --accent: #60a5fa;
-      --btnText: #061022;
+    :root[data-theme="light"]{
+		--bg:#f6f7fb;  --card:#ffffff;  --text:#0b1020;  --muted:#5060a8;
+        --line:rgba(0,0,0,.10);  --btn:#2b60ff;  --btn2:#eef1ff;
     }
 
-    html, body { height:100%; }
+
+    *{ box-sizing:border-box; }
     body{
-      margin:0;
-      font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
-      background:
-        radial-gradient(1200px 900px at 10% 0%, rgba(37,99,235,.12), transparent 55%),
-        radial-gradient(900px 700px at 90% 10%, rgba(99,102,241,.12), transparent 60%),
-        radial-gradient(900px 700px at 50% 110%, rgba(16,185,129,.10), transparent 60%),
-        var(--bg);
-      color: var(--text);
+      margin:0; font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Arial;
+      background:var(--bg); color:var(--text);
     }
-
-    header{
-      position: sticky;
-      top: 0;
-      z-index: 5;
-      padding: 14px 16px 12px;
-      border-bottom: 1px solid var(--border);
-      background: color-mix(in srgb, var(--panelSolid) 70%, transparent);
-      backdrop-filter: var(--glass);
-    }
-    .headrow{
-      display:flex;
-      align-items:center;
-      justify-content:space-between;
-      gap: 10px;
-      max-width: 980px;
-      margin: 0 auto;
-    }
-    h1{
-      margin:0;
-      font-size: 18px;
-      letter-spacing: .2px;
-    }
-    .headbtns{ display:flex; gap:10px; align-items:center; }
-
-    .iconbtn{
-      border: 1px solid var(--border);
-      background: color-mix(in srgb, var(--panelSolid) 80%, transparent);
-      color: var(--text);
-      border-radius: 12px;
-      padding: 10px 12px;
-      cursor:pointer;
-      box-shadow: 0 6px 18px rgba(0,0,0,.06);
-    }
-    .iconbtn:active{ transform: translateY(1px); }
-
     .wrap{
-      padding: 14px 12px 96px;
-      max-width: 980px;
-      margin: 0 auto;
+      max-width: 860px; margin: 0 auto; padding: 16px 16px 92px;
     }
+    h1{ font-size: 20px; margin: 8px 0 14px; letter-spacing:.3px; }
+    .list{
+      display:flex; flex-direction:column; gap:10px;
+    }
+    .row{
+      display:flex; align-items:center; gap:12px;
+      background:var(--card); border:1px solid var(--line);
+      border-radius:16px; padding:12px 14px;
+      text-decoration:none; color:inherit;
+    }
+    .row:active{ transform: scale(0.995); }
+    .ico{
+      width:38px; height:38px; border-radius:12px;
+      display:grid; place-items:center;
+      background:rgba(43,96,255,.16);
+      border:1px solid rgba(43,96,255,.22);
+      flex:0 0 auto;
+    }
+    .name{ font-size: 16px; line-height:1.2; }
+    .sub{ font-size: 12px; color: var(--muted); margin-top:3px; }
+    .spacer{ flex:1; }
+    .badge{
+      font-size:12px; color:var(--muted);
+      border:1px solid var(--line); padding:6px 10px; border-radius:999px;
+      background:rgba(0,0,0,.08);
+    }
+
+    .footer{
+      position:fixed; left:0; right:0; bottom:0;
+      padding:12px 12px calc(12px + env(safe-area-inset-bottom));
+      background:linear-gradient(to top, rgba(11,16,32,.95), rgba(11,16,32,.55), rgba(11,16,32,0));
+      pointer-events:none;
+    }
+    @media (prefers-color-scheme: light){
+      .footer{ background:linear-gradient(to top, rgba(246,247,251,.95), rgba(246,247,251,.55), rgba(246,247,251,0)); }
+    }
+    .footerInner{
+      max-width: 860px; margin:0 auto; display:flex; gap:10px; pointer-events:auto;
+    }
+
+    /* BIG BUTTONS */
+    .btn{
+      border:0; border-radius:18px;
+      padding:18px 18px;               /* bigger */
+      font-size:18px;                  /* bigger */
+      font-weight:800;
+      min-height:64px;                 /* bigger */
+      display:flex; align-items:center; justify-content:center;
+      cursor:pointer;
+      box-shadow: 0 10px 30px rgba(0,0,0,.22);
+      text-decoration:none;
+      user-select:none;
+      -webkit-tap-highlight-color: transparent;
+    }
+    .btnPrimary{ background:var(--btn); color:white; flex:1; }
+    .btnSecondary{ background:var(--btn2); color:var(--text); flex:1; border:1px solid var(--line); box-shadow:none; }
+    .btn:active{ transform: scale(0.995); }
 
     .status{
-      margin: 12px 4px;
-      font-size: 13px;
-      color: var(--muted);
+      margin: 8px 0 14px; color: var(--muted); font-size: 13px;
     }
-
-    .list{
-      border: 1px solid var(--border);
-      border-radius: 18px;
-      overflow: hidden;
-      background: var(--panel);
-      backdrop-filter: var(--glass);
-      box-shadow: var(--shadow);
-    }
-
-    .item{
-      display:flex;
-      align-items:center;
-      gap: 12px;
-      padding: 12px 12px;
-      border-top: 1px solid var(--border);
-      cursor: pointer;
-    }
-    .item:first-child{ border-top:none; }
-    .item:hover{ background: color-mix(in srgb, var(--panelSolid) 22%, transparent); }
-
-    .pdfIcon{
-      width: 38px; height: 38px;
-      border-radius: 12px;
-      display:flex; align-items:center; justify-content:center;
-      background: color-mix(in srgb, var(--accent) 14%, transparent);
-      border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
-      font-size: 18px;
-      flex: 0 0 auto;
-    }
-
-    .name{
-      flex:1;
-      overflow:hidden;
-      text-overflow: ellipsis;
-      white-space: nowrap;
-      font-weight: 650;
-    }
-    .meta{
-      font-size: 12px;
-      color: var(--muted);
-      text-align:right;
-      min-width: 92px;
-    }
-
-    .bottom{
-      position: fixed;
-      left: 0; right: 0; bottom: 0;
-      padding: 12px;
-      border-top: 1px solid var(--border);
-      background: color-mix(in srgb, var(--panelSolid) 70%, transparent);
-      backdrop-filter: var(--glass);
-      z-index: 6;
-    }
-    .bottom .inner{
-      max-width: 980px;
-      margin: 0 auto;
-      display:flex;
-      justify-content:center;
-    }
-
-    .btn{
-      padding: 11px 14px;
+    .error{
+      background: rgba(255,80,80,.12);
+      border:1px solid rgba(255,80,80,.25);
+      color: #ffb7b7;
+      padding: 10px 12px;
       border-radius: 14px;
-      border: 1px solid var(--border);
-      background: var(--accent);
-      color: var(--btnText);
-      cursor: pointer;
-      font-size: 14px;
-      font-weight: 700;
-    }
-    .btn.secondary{
-      background: transparent;
-      color: var(--text);
-    }
-    .bottom .btn{
-      width: min(520px, 100%);
-      font-size: 16px;
-      padding: 14px 16px;
+      font-size: 13px;
+      white-space: pre-wrap;
     }
 
-    /* Kioskiges Overlay */
-    .ov{
-      position: fixed;
-      inset: 0;
-      z-index: 9999;
-      display: grid;
-      place-items: center;
-      padding: 18px;
-      background: rgba(0,0,0,.62);
-      backdrop-filter: blur(12px);
+    /* INSTALL/UPDATE OVERLAY */
+    #installOverlay{
+      position:fixed; inset:0;
+      display:none;
+      z-index:2147483647;
+      background: rgba(0,0,0,.55);
+      backdrop-filter: blur(10px);
+      pointer-events:auto;
+      padding: 18px 14px;
     }
+    #installOverlay *{ pointer-events:auto; }
     .ovCard{
-      width: min(560px, 100%);
+      max-width: 560px;
+      margin: 10vh auto 0;
+      background: var(--card);
+      border: 1px solid var(--line);
       border-radius: 22px;
-      border: 1px solid rgba(255,255,255,.14);
-      background: color-mix(in srgb, var(--panelSolid) 92%, transparent);
-      box-shadow: 0 18px 60px rgba(0,0,0,.45);
-      padding: 18px;
-      text-align: center;
-    }
-    .ovTitle{
-      font-size: 20px;
-      font-weight: 900;
-      margin: 6px 0 8px;
-      letter-spacing: .2px;
-    }
-    .ovText{
-      color: var(--muted);
-      font-size: 14px;
-      line-height: 1.35;
-      margin: 0 0 16px;
-    }
-    .ovPrimary{
-      width: 100%;
-      padding: 14px 16px;
-      font-size: 16px;
-      border-radius: 16px;
-      border: 0;
-      background: var(--accent);
-      color: var(--btnText);
-      font-weight: 900;
-      cursor: pointer;
-      box-shadow: 0 10px 30px rgba(0,0,0,.25);
-    }
-    .ovPrimary:active{ transform: translateY(1px); }
-	.ovLink{
-	  margin-top: 12px;
-	  display: inline-block;
-	  background: transparent;
-	  border: 0;
-	  padding: 8px 10px;
-	  color: color-mix(in srgb, var(--text) 82%, transparent);
-	  font-size: 13px;
-	  text-decoration: underline;
-      cursor: pointer;
-      opacity: .85;
+      padding: 18px 16px;
+      box-shadow: 0 20px 70px rgba(0,0,0,.35);
     }
+    .ovTitle{ font-size: 18px; font-weight: 850; margin: 6px 0 6px; }
+    .ovText{ color: var(--muted); font-size: 14px; line-height: 1.35; margin: 0 0 14px; }
+    .ovBtns{ display:flex; gap:12px; margin-top: 10px; }
+    .ovBtns .btn{ flex:1; }
     .ovHint{
-      margin-top: 10px;
+      margin-top: 12px;
       font-size: 12px;
       color: var(--muted);
+      border-top: 1px solid var(--line);
+      padding-top: 12px;
+      line-height: 1.35;
     }
   </style>
 </head>
 
 <body>
-  <!-- Kiosk Overlay -->
-  <div id="installOverlay" class="ov" hidden>
+  <div class="wrap">
+    <h1>WFW-Aushang</h1>
+    <div id="status" class="status">Lade Liste…</div>
+    <div id="err" class="error" style="display:none"></div>
+    <div id="list" class="list"></div>
+  </div>
+
+  <div class="footer">
+    <div class="footerInner">
+      <button id="closeBtn" class="btn btnSecondary">Aushang schließen</button>
+	  <button id="themeBtn" class="btn btnSecondary">🌙 Dunkel</button>
+      <button id="refreshBtn" class="btn btnPrimary">↻ Refresh</button>
+    </div>
+  </div>
+
+  <div id="installOverlay" role="dialog" aria-modal="true">
     <div class="ovCard">
       <div class="ovTitle" id="ovTitle">WFW-Aushang</div>
-      <div class="ovText" id="ovText">Installiere die App für Kiosk-Modus und schnelle PDFs.</div>
-
-      <button id="ovPrimaryBtn" class="ovPrimary">Installieren</button>
-      <button id="ovContinueBtn" class="ovLink" type="button">Weiter im Browser</button>
-
-
-      <div class="ovHint" id="ovHint"></div>
-    </div>
-  </div>
-
-  <header>
-    <div class="headrow">
-      <h1>WFW-Aushang</h1>
-      <div class="headbtns">
-        <button class="iconbtn" id="themeBtn" title="Dark Mode">🌓</button>
-        <button class="iconbtn" id="refreshBtn" title="Neu laden">↻</button>
+      <p class="ovText" id="ovText">Installiere mich!</p>
+      <div class="ovBtns">
+        <button id="ovPrimaryBtn" class="btn btnPrimary">Installieren</button>
+        <button id="ovContinueBtn" class="btn btnSecondary">Weiter im Browser</button>
       </div>
-    </div>
-  </header>
-
-  <div class="wrap">
-    <div class="status" id="status">Lade Liste…</div>
-    <div class="list" id="list"></div>
-  </div>
-
-  <div class="bottom">
-    <div class="inner">
-      <button class="btn" id="closeBtn">Aushang schließen</button>
+      <div class="ovHint" id="ovHint" style="display:none"></div>
     </div>
   </div>
 
-  <script src="./app.js"></script>
+  <script src="./app.js?v=2025.12.24.6"></script>
 </body>
 </html>
diff --git a/zuss/manifest.webmanifest b/zuss/manifest.webmanifest
index 15f9b99..41b80e0 100644
--- a/zuss/manifest.webmanifest
+++ b/zuss/manifest.webmanifest
@@ -1,9 +1,9 @@
 {
   "name": "WFW-Aushang",
   "short_name": "WFW-Aushang",
-  "start_url": "/zuss/",
+  "start_url": "/zuss/?source=pwa",
   "scope": "/zuss/",
-  "display": "fullscreen",
+  "display": "standalone",
   "orientation": "portrait",
   "background_color": "#0b1020",
   "theme_color": "#0b1020",
@@ -12,3 +12,4 @@
     { "src": "/zuss/icons/icon-512.png", "sizes": "512x512", "type": "image/png" }
   ]
 }
+
diff --git a/zuss/sw.js b/zuss/sw.js
index 460b24e..574b7aa 100644
--- a/zuss/sw.js
+++ b/zuss/sw.js
@@ -1,5 +1,4 @@
-// Simple offline cache for kiosk usage
-const CACHE = "wfw-aushang-2025.12.24.2";
+const CACHE = "wfw-aushang-2025.12.24.6";
 
 const ASSETS = [
   "/zuss/",
@@ -12,48 +11,51 @@ const ASSETS = [
 ];
 
 self.addEventListener("install", (event) => {
-  event.waitUntil(
-    caches.open(CACHE).then((c) => c.addAll(ASSETS)).then(() => self.skipWaiting())
-  );
+  event.waitUntil((async () => {
+    const cache = await caches.open(CACHE);
+    await cache.addAll(ASSETS);
+    self.skipWaiting();
+  })());
 });
 
 self.addEventListener("activate", (event) => {
-  event.waitUntil(
-    (async () => {
-      const keys = await caches.keys();
-      await Promise.all(keys.map(k => (k === CACHE ? null : caches.delete(k))));
-      await self.clients.claim();
-    })()
-  );
+  event.waitUntil((async () => {
+    const keys = await caches.keys();
+    await Promise.all(keys.map(k => (k === CACHE ? null : caches.delete(k))));
+    self.clients.claim();
+  })());
 });
 
-// Network-first for version.json + list, cache-first for static assets
 self.addEventListener("fetch", (event) => {
-  const url = new URL(event.request.url);
+  const req = event.request;
+  const url = new URL(req.url);
 
-  // Only handle same-origin requests
-  if (url.origin !== self.location.origin) return;
-
-  const isVersion = url.pathname.endsWith("/zuss/version.json");
-
-  if (isVersion) {
-    event.respondWith(
-      fetch(event.request, { cache: "no-store" }).catch(() => caches.match(event.request))
-    );
+  // Network-first for version.json (so updates are found)
+  if (url.pathname.endsWith("/zuss/version.json")) {
+    event.respondWith((async () => {
+      try {
+        const fresh = await fetch(req, { cache: "no-store" });
+        const cache = await caches.open(CACHE);
+        cache.put(req, fresh.clone());
+        return fresh;
+      } catch {
+        const cached = await caches.match(req);
+        return cached || new Response('{"version":"2025.12.24.6"}', { headers: { "Content-Type": "application/json" } });
+      }
+    })());
     return;
   }
 
-  // Cache-first for our own static assets
+  // Cache-first for app shell
   if (url.pathname.startsWith("/zuss/")) {
-    event.respondWith(
-      caches.match(event.request).then((cached) => {
-        if (cached) return cached;
-        return fetch(event.request).then((resp) => {
-          const copy = resp.clone();
-          caches.open(CACHE).then((c) => c.put(event.request, copy));
-          return resp;
-        });
-      })
-    );
+    event.respondWith((async () => {
+      const cached = await caches.match(req);
+      if (cached) return cached;
+      const fresh = await fetch(req);
+      const cache = await caches.open(CACHE);
+      cache.put(req, fresh.clone());
+      return fresh;
+    })());
+    return;
   }
 });
diff --git a/zuss/version.json b/zuss/version.json
index 5338ccd..ae178e3 100644
--- a/zuss/version.json
+++ b/zuss/version.json
@@ -1 +1 @@
-{ "version": "2025.12.24.2" }
\ No newline at end of file
+{ "version": "2025.12.24.6" }