diff --git a/index.html b/index.html
index af70aaf..8e484ef 100644
--- a/index.html
+++ b/index.html
@@ -235,6 +235,7 @@
         <button id="importBtn">⭱ Import file…</button>
         <input type="file" id="importFile" accept="application/json" style="display:none">
         <button id="clearLogBtn">🗑 Clear log</button>
+        <button id="resetAllBtn" style="color:#ff7b6b">♻ Reset everything…</button>
       </div>
     </div>
   </div>
@@ -764,6 +765,11 @@ function renderLog() {
   box.innerHTML = html;
 }
 function clearLog() { if (confirm("Clear the practice log? (set lists & presets are kept)")) { lsSet(LS.logs, []); renderLog(); } }
+function resetAll() {
+  if (!confirm("Reset EVERYTHING?\n\nThis permanently deletes all saved data on this device — presets, set lists, practice log and theme — and reloads the app to first-run state (demos restored). This cannot be undone.")) return;
+  try { localStorage.clear(); } catch (e) {}
+  location.replace(location.origin + location.pathname);   // reload clean, no hash
+}
 
 // --- backup: export / import everything (presets + set lists + logs) ---
 function exportAll() {
@@ -1007,6 +1013,7 @@ $("exportBtn").addEventListener("click", () => { $("trayMenu").hidden = true; ex
 $("importBtn").addEventListener("click", () => { $("trayMenu").hidden = true; $("importFile").click(); });
 $("importFile").addEventListener("change", (e) => { if (e.target.files[0]) importAll(e.target.files[0]); e.target.value = ""; });
 $("clearLogBtn").addEventListener("click", () => { $("trayMenu").hidden = true; clearLog(); });
+$("resetAllBtn").addEventListener("click", () => { $("trayMenu").hidden = true; resetAll(); });
 $("shareSettingsBtn").addEventListener("click", () => { $("trayMenu").hidden = true; shareSettings(); });
 $("shareSetlistBtn").addEventListener("click", () => { $("trayMenu").hidden = true; shareSetlist(); });
 $("shareClose").addEventListener("click", () => $("shareOverlay").hidden = true);