diff --git a/src/lab/QuestCubeLab.tsx b/src/lab/QuestCubeLab.tsx
index 0f0a80e..a333908 100644
--- a/src/lab/QuestCubeLab.tsx
+++ b/src/lab/QuestCubeLab.tsx
@@ -6,6 +6,7 @@ import {
   Grid,
   Environment,
   PerspectiveCamera,
+  Text
 } from "@react-three/drei";
 import { XR, useXR } from "@react-three/xr";
 import { xrStore as store } from "@/stores/useXRStore";
@@ -42,6 +43,35 @@ const CUBE_SIZE = 0.3;
 
 type AlignPhase = 'IDLE' | 'WAIT_SURFACE' | 'WAIT_FACE2' | 'WAIT_EDGE';
 
+// ===================================================================
+// COMPONENTE: AR HUD Messages (Mostra avisos flutuantes apenas no óculos)
+// ===================================================================
+const ARHudMessages = ({ alignPhase }: { alignPhase: AlignPhase }) => {
+  const session = useXR((s) => s.session);
+  if (!session) return null;
+
+  let msg = '';
+  if (alignPhase === 'IDLE') msg = 'Livre! Clique na face do cubo para iniciar.';
+  else if (alignPhase === 'WAIT_SURFACE') msg = 'Face gravada! Clique na mesa para apoiar.';
+  else if (alignPhase === 'WAIT_FACE2') msg = 'Apoiado! Clique noutra face do cubo.';
+  else if (alignPhase === 'WAIT_EDGE') msg = 'Ultimo passo! Clique na borda da mesa.';
+
+  return (
+    <group position={[0, 1.3, -0.5]}>
+      <Text
+        fontSize={0.06}
+        color="#fde047"
+        anchorX="center"
+        anchorY="middle"
+        outlineWidth={0.005}
+        outlineColor="#000000"
+      >
+        {msg}
+      </Text>
+    </group>
+  );
+};
+
 // ===================================================================
 // COMPONENTE: CuboControlado
 // ===================================================================
@@ -174,10 +204,10 @@ const CubeControlado = ({
       allowScale={false}
       lockedActive={lockedRef.current}
       onSync={(deltaPos, deltaQuat, deltaScale) => {
-        // Matriz atual do cubo
+        // Matriz atual do cubo (IMPORTANTE: mesh default usa ordem XYZ)
         const mMesh = new THREE.Matrix4().compose(
           new THREE.Vector3(posRef.current.x, posRef.current.y, posRef.current.z),
-          new THREE.Quaternion().setFromEuler(new THREE.Euler(rotRef.current.x, rotRef.current.y, rotRef.current.z, 'YXZ')),
+          new THREE.Quaternion().setFromEuler(new THREE.Euler(rotRef.current.x, rotRef.current.y, rotRef.current.z, 'XYZ')),
           new THREE.Vector3(scaleRef.current, scaleRef.current, scaleRef.current)
         );
 
@@ -193,10 +223,10 @@ const CubeControlado = ({
         mCombined.decompose(finalPos, finalQuat, finalScale);
 
         posRef.current.x = finalPos.x;
-        posRef.current.y = Math.max(0.5, finalPos.y);
+        posRef.current.y = Math.max(0.15, finalPos.y);
         posRef.current.z = finalPos.z;
 
-        const euler = new THREE.Euler().setFromQuaternion(finalQuat, 'YXZ');
+        const euler = new THREE.Euler().setFromQuaternion(finalQuat, 'XYZ');
         rotRef.current.x = euler.x;
         rotRef.current.y = euler.y;
         rotRef.current.z = euler.z;
@@ -509,6 +539,8 @@ const QuestCubeLab = () => {
                     onEdgeClick={handleEdgeClick}
                   />
 
+                  <ARHudMessages alignPhase={alignPhase} />
+
                   <Grid args={[20, 20]} cellSize={0.25} cellThickness={0.5} cellColor="#475569" sectionSize={1} sectionThickness={1} sectionColor="#94a3b8" fadeDistance={18} fadeStrength={1} infiniteGrid={false} position={[0, 0, 0]} />
                   <mesh receiveShadow rotation={[-Math.PI / 2, 0, 0]} position={[0, -0.001, 0]}>
                     <planeGeometry args={[20, 20]} />