fix: closes #674

app.js

@@ -1919,10 +1919,12 @@ function setupControls() {
         );
         const raycaster = new THREE.Raycaster();
         raycaster.setFromCamera(mouse, camera);
-        const intersects = raycaster.intersectObjects(portals.map(p => p.ring));
+        // Raycast against both ring and swirl for a larger click target
+        const portalMeshes = portals.flatMap(p => [p.ring, p.swirl]);
+        const intersects = raycaster.intersectObjects(portalMeshes);
         if (intersects.length > 0) {
-          const clickedRing = intersects[0].object;
-          const portal = portals.find(p => p.ring === clickedRing);
+          const hitObj = intersects[0].object;
+          const portal = portals.find(p => p.ring === hitObj || p.swirl === hitObj);
           if (portal) activatePortal(portal);
         }
       }