diff --git a/src/public/index.html b/src/public/index.html
index c968253..af1a827 100644
--- a/src/public/index.html
+++ b/src/public/index.html
@@ -866,6 +866,8 @@ speakBtn.addEventListener('click', () => {
 
 // ── Speech recognition ────────────────────────────────────────────────────────
 const SpeechRecognition = window.SpeechRecognition || window.webkitSpeechRecognition;
+const MAX_RECORD_SECONDS = 10;
+const MAX_RECORD_WORDS   = 30;
 
 function initRecognition() {
   if (!SpeechRecognition) return null;
@@ -895,6 +897,10 @@ function initRecognition() {
         interim = t;
       }
     }
+    if (finalText.trim().split(/\s+/).length >= MAX_RECORD_WORDS) {
+      stopRecording();
+      return;
+    }
     const display = finalText + (interim ? ' ' + interim : '');
     updateTranscriptBox(display, !!interim);
     state.transcript = finalText;
@@ -903,8 +909,10 @@ function initRecognition() {
 
   r.onend = () => {
     if (state.isRecording) {
-      // auto-restart if not manually stopped
-      try { r.start(); } catch (_) {}
+      // create a fresh instance to avoid duplicate results on restart
+      const fresh = initRecognition();
+      recognition = fresh;
+      try { fresh.start(); } catch (_) {}
     }
   };
 
@@ -917,6 +925,8 @@ function initRecognition() {
   return r;
 }
 
+let recordingTimer = null;
+
 function startRecording() {
   if (!SpeechRecognition) {
     alert('Spracherkennung wird in diesem Browser nicht unterstützt. Bitte nutze Chrome oder Edge.');
@@ -926,9 +936,13 @@ function startRecording() {
   recognition = initRecognition();
   state.isRecording = true;
   try { recognition.start(); } catch (_) {}
+
+  clearTimeout(recordingTimer);
+  recordingTimer = setTimeout(() => stopRecording(), MAX_RECORD_SECONDS * 1000);
 }
 
 function stopRecording() {
+  clearTimeout(recordingTimer);
   state.isRecording = false;
   if (recognition) {
     try { recognition.stop(); } catch (_) {}