diff --git a/src/pages/XRSession.tsx b/src/pages/XRSession.tsx
index 0d5bd1a..de6f020 100644
--- a/src/pages/XRSession.tsx
+++ b/src/pages/XRSession.tsx
@@ -10,26 +10,11 @@ import { ArrowLeft, Move, RotateCw, QrCode, Download, Crosshair } from 'lucide-r
 import { Button } from '@/components/ui/button';
 import { generateMarkerDownloadURL } from '@/lib/trackingMarker';
 
-// --- XR Store singleton ---
-let xrStoreInstance: ReturnType<typeof createXRStore> | null = null;
-
-function getOrCreateXRStore() {
-  if (xrStoreInstance) return xrStoreInstance;
-
-  // Only emulate when on localhost AND no native XR support
-  const shouldEmulate =
-    typeof window !== 'undefined' &&
-    window.location.hostname === 'localhost' &&
-    !navigator.xr;
-
-  xrStoreInstance = createXRStore({
-    emulate: shouldEmulate ? 'metaQuest3' : false,
-    hand: { left: true, right: true },
-    controller: { left: true, right: true },
-  });
-
-  return xrStoreInstance;
-}
+// --- XR Store at MODULE level (required by Quest 3 browser) ---
+const store = createXRStore({
+  hand: { left: true, right: true },
+  controller: { left: true, right: true },
+});
 
 // ─── XRModel ───────────────────────────────────────────
 function XRModel({ url }: { url: string }) {
@@ -129,8 +114,8 @@ function ControllerFineTuning() {
     const posStep = 0.001;
     const rotStep = 0.1;
     const deadzone = 0.15;
-    const store = useModelStore.getState();
-    const ft = { ...store.fineTuning };
+    const modelStore = useModelStore.getState();
+    const ft = { ...modelStore.fineTuning };
 
     if (leftAxes) {
       if (Math.abs(leftAxes[0]) > deadzone) ft.posX += leftAxes[0] * posStep;
@@ -150,47 +135,10 @@ function ControllerFineTuning() {
 // ─── ImageTrackingAnchor ───────────────────────────────
 function ImageTrackingAnchor({ children }: { children: React.ReactNode }) {
   const groupRef = useRef<THREE.Group>(null);
-  const session = useXR((s) => s.session);
-  const { gl } = useThree();
-  const { setAnchorMode } = useModelStore();
-  const trackingActive = useRef(false);
 
-  useFrame((_, __, frame: any) => {
-    if (!frame || !session || !groupRef.current) return;
-
-    try {
-      const results = frame.getImageTrackingResults?.();
-      if (results && results.length > 0) {
-        for (const result of results) {
-          if (result.trackingState === 'tracked' || result.trackingState === 'emulated') {
-            const refSpace = gl.xr.getReferenceSpace();
-            if (!refSpace) continue;
-
-            const pose = frame.getPose(result.imageSpace, refSpace);
-            if (pose) {
-              const pos = pose.transform.position;
-              const ori = pose.transform.orientation;
-
-              groupRef.current.position.set(pos.x, pos.y, pos.z);
-              groupRef.current.quaternion.set(ori.x, ori.y, ori.z, ori.w);
-
-              if (!trackingActive.current) {
-                trackingActive.current = true;
-                setAnchorMode('tracking');
-                toast.success('QR Code detectado — Modelo ancorado!');
-              }
-              return;
-            }
-          }
-        }
-      }
-    } catch {
-      // getImageTrackingResults not available
-    }
-
-    if (trackingActive.current) return;
-
-    // Manual fallback — place 1.5m in front
+  useFrame(() => {
+    if (!groupRef.current) return;
+    // Place model 1.5m in front of the user
     groupRef.current.position.set(0, 0, -1.5);
     groupRef.current.quaternion.identity();
   });
@@ -203,7 +151,6 @@ const XRSession = () => {
   const navigate = useNavigate();
   const { model, anchorMode, setAnchorMode } = useModelStore();
   const [inXR, setInXR] = useState(false);
-  const [store] = useState(() => getOrCreateXRStore());
 
   useEffect(() => {
     if (!model) {
@@ -211,23 +158,22 @@ const XRSession = () => {
     }
   }, [model, navigate]);
 
-  const handleEnterAR = useCallback(async () => {
-    try {
-      const session = await store.enterAR();
-      if (session) {
+  // Listen for XR session state changes
+  useEffect(() => {
+    const unsubscribe = store.subscribe((state) => {
+      const session = state.session;
+      if (session && !inXR) {
+        setInXR(true);
+        setAnchorMode('manual');
+        toast.success('Sessão AR iniciada!');
         session.addEventListener('end', () => {
           setInXR(false);
           setAnchorMode('manual');
         });
-        setInXR(true);
-        setAnchorMode('manual');
-        toast.success('Sessão XR iniciada!');
       }
-    } catch (err: any) {
-      console.error('XR error:', err);
-      toast.error(`Falha ao iniciar XR: ${err.message}`);
-    }
-  }, [store, setAnchorMode]);
+    });
+    return unsubscribe;
+  }, [inXR, setAnchorMode]);
 
   const handleDownloadMarker = useCallback(async () => {
     const url = await generateMarkerDownloadURL();
@@ -261,7 +207,8 @@ const XRSession = () => {
                 <Download className="h-3.5 w-3.5" />
                 <span className="font-mono text-xs">Marcador QR</span>
               </Button>
-              <Button className="gap-2 glow-primary" onClick={handleEnterAR}>
+              {/* CRITICAL: Direct call without async wrapper to preserve user gesture */}
+              <Button className="gap-2 glow-primary" onClick={() => store.enterAR()}>
                 Iniciar Sessão AR
               </Button>
             </>
@@ -318,12 +265,6 @@ const XRSession = () => {
         {/* Floating HUD overlay */}
         <div className="absolute bottom-4 left-4 right-4 z-10 pointer-events-none">
           <div className="pointer-events-auto inline-flex flex-wrap gap-3 rounded-lg border bg-card/90 backdrop-blur-sm p-3 shadow-lg">
-            <div className="flex items-center gap-2">
-              <QrCode className="h-3.5 w-3.5 text-primary" />
-              <span className="font-mono text-[10px] text-muted-foreground">
-                {anchorMode === 'tracking' ? '● QR Detectado' : '○ Buscando QR…'}
-              </span>
-            </div>
             <div className="flex items-center gap-2">
               <Move className="h-3.5 w-3.5 text-primary" />
               <span className="font-mono text-[10px] text-muted-foreground">