diff --git a/frontend/src/components/Runtime/RuntimeControls.tsx b/frontend/src/components/Runtime/RuntimeControls.tsx
index a35fc2b..1bc17f5 100644
--- a/frontend/src/components/Runtime/RuntimeControls.tsx
+++ b/frontend/src/components/Runtime/RuntimeControls.tsx
@@ -46,6 +46,10 @@ interface RuntimeControlsProps {
   isMuted?: boolean;
   /** Callback to toggle all presentation sound on/off */
   onSoundToggle?: () => void;
+  /** Whether to show the offline download button */
+  showOfflineButton?: boolean;
+  /** Whether to show the fullscreen button */
+  showFullscreenButton?: boolean;
 }
 
 /**
@@ -468,6 +472,8 @@ export default function RuntimeControls({
   showSoundButton = false,
   isMuted = true,
   onSoundToggle,
+  showOfflineButton = true,
+  showFullscreenButton = true,
 }: RuntimeControlsProps) {
   // Counter-scale to resist pinch-zoom
   const counterScale = useCounterZoom();
@@ -520,18 +526,22 @@ export default function RuntimeControls({
       onTouchEnd={stopControlEvent}
       onTouchEndCapture={stopControlEvent}
     >
-      <OfflineControl
-        projectId={projectId}
-        projectSlug={projectSlug}
-        projectName={projectName}
-        pages={pages}
-      />
-      <ControlButton
-        icon={isFullscreen ? mdiFullscreenExit : mdiFullscreen}
-        color='info'
-        onClick={toggleFullscreen}
-        title={isFullscreen ? 'Exit fullscreen' : 'Enter fullscreen'}
-      />
+      {showOfflineButton && (
+        <OfflineControl
+          projectId={projectId}
+          projectSlug={projectSlug}
+          projectName={projectName}
+          pages={pages}
+        />
+      )}
+      {showFullscreenButton && (
+        <ControlButton
+          icon={isFullscreen ? mdiFullscreenExit : mdiFullscreen}
+          color='info'
+          onClick={toggleFullscreen}
+          title={isFullscreen ? 'Exit fullscreen' : 'Enter fullscreen'}
+        />
+      )}
       {showSoundButton && onSoundToggle && (
         <ControlButton
           icon={isMuted ? mdiVolumeOff : mdiVolumeHigh}
diff --git a/frontend/src/pages/constructor.tsx b/frontend/src/pages/constructor.tsx
index 9e0843f..bbad2d5 100644
--- a/frontend/src/pages/constructor.tsx
+++ b/frontend/src/pages/constructor.tsx
@@ -18,6 +18,7 @@ import TransitionBlackOverlay from '../components/TransitionBlackOverlay';
 import ConstructorToolbar from '../components/Constructor/ConstructorToolbar';
 import TransitionPreviewOverlay from '../components/Constructor/TransitionPreviewOverlay';
 import CanvasElementComponent from '../components/Constructor/CanvasElement';
+import RuntimeControls from '../components/Runtime/RuntimeControls';
 import GalleryCarouselOverlay from '../components/UiElements/GalleryCarouselOverlay';
 import InfoPanelOverlay from '../components/UiElements/InfoPanelOverlay';
 import ImageDetailPanel from '../components/UiElements/ImageDetailPanel';
@@ -198,7 +199,12 @@ const ConstructorPage = ({ mode = 'constructor' }: ConstructorPageProps) => {
   });
 
   // Canvas scale for responsive UI elements and letterbox mode
-  const { cssVars: canvasCssVars, letterboxStyles } = useCanvasScale({
+  const {
+    cssVars: canvasCssVars,
+    letterboxStyles,
+    canvasWidth,
+    canvasHeight,
+  } = useCanvasScale({
     designWidth: project?.design_width,
     designHeight: project?.design_height,
   });
@@ -241,13 +247,6 @@ const ConstructorPage = ({ mode = 'constructor' }: ConstructorPageProps) => {
     backgroundAudioEndTime,
   } = usePageBackground();
 
-  // Global sound control starts muted for browser autoplay compatibility.
-  const soundControl = useVideoSoundControl({
-    pageHasSound: backgroundVideoMuted === false,
-    hasBackgroundVideo: Boolean(backgroundVideoUrl),
-    hasBackgroundAudio: Boolean(backgroundAudioUrl),
-  });
-
   // Network-aware transitions: skip video on slow networks, use CSS fade instead
   const { shouldUseVideoTransitions, networkInfo } = useNetworkAware();
 
@@ -367,6 +366,49 @@ const ConstructorPage = ({ mode = 'constructor' }: ConstructorPageProps) => {
     [elements],
   );
 
+  const hasElementAudio = useMemo(
+    () =>
+      elements.some((element) => {
+        if (element.hoverAudioUrl || element.clickAudioUrl) return true;
+        if (
+          (element.type === 'audio_player' ||
+            element.type === 'video_player') &&
+          element.mediaUrl &&
+          !element.mediaMuted
+        ) {
+          return true;
+        }
+        if (
+          element.galleryCards?.some(
+            (card: GalleryCarouselMediaItem) =>
+              card.mediaType === 'video' || Boolean(card.videoUrl),
+          )
+        ) {
+          return true;
+        }
+        if (
+          element.infoPanelSections?.some((section) =>
+            section.images?.some(
+              (item: InfoPanelImage) =>
+                item.itemType === 'video' || Boolean(item.videoUrl),
+            ),
+          )
+        ) {
+          return true;
+        }
+        return false;
+      }),
+    [elements],
+  );
+
+  // Global sound control starts muted for browser autoplay compatibility.
+  const soundControl = useVideoSoundControl({
+    pageHasSound: backgroundVideoMuted === false,
+    hasBackgroundVideo: Boolean(backgroundVideoUrl),
+    hasBackgroundAudio: Boolean(backgroundAudioUrl),
+    hasElementAudio,
+  });
+
   // Look up current element for gallery carousel (so it receives updates from element editor)
   const activeGalleryCarouselElement = useMemo(() => {
     if (!activeGalleryCarousel) return null;
@@ -2184,6 +2226,27 @@ const ConstructorPage = ({ mode = 'constructor' }: ConstructorPageProps) => {
           </BackdropPortalProvider>
         </div>
 
+        {!isConstructorEditMode &&
+          !activeGalleryCarousel &&
+          !activeInfoPanelGallery &&
+          soundControl.showSoundButton && (
+            <RuntimeControls
+              projectId={projectId || null}
+              projectSlug=''
+              projectName={projectName}
+              pages={pages}
+              isFullscreen={false}
+              toggleFullscreen={() => undefined}
+              canvasWidth={canvasWidth}
+              canvasHeight={canvasHeight}
+              showOfflineButton={false}
+              showFullscreenButton={false}
+              showSoundButton={soundControl.showSoundButton}
+              isMuted={soundControl.isMuted}
+              onSoundToggle={soundControl.toggleSound}
+            />
+          )}
+
         {/* ElementEditorPanel now uses ConstructorContext for all state */}
         {pages.length > 0 && hasEditorSelection && (
           <ElementEditorPanel