diff --git a/src/app/components/VirtualTour.tsx b/src/app/components/VirtualTour.tsx
index 6a415c5..62842ed 100644
--- a/src/app/components/VirtualTour.tsx
+++ b/src/app/components/VirtualTour.tsx
@@ -2941,14 +2941,30 @@ function MiniMap({
   const nodeSize = compact ? 5.2 : 5.2;
   const edgeInset = nodeSize / 2;
   const clampMapPoint = (value: number) => THREE.MathUtils.clamp(value, edgeInset, 100 - edgeInset);
-  const compressOverviewY = (value: number) => 50 + (value - 50) * 0.86;
+
+  // Auto-fit overview: co toàn bộ điểm vào khung với lề an toàn để không bị cắt.
+  const OVERVIEW_MARGIN = 8;
+  const overviewPts = scenes
+    .map((s) => s.mapPosition)
+    .filter((p): p is { x: number; y: number } => Boolean(p));
+  const overviewBounds = {
+    minX: Math.min(...overviewPts.map((p) => p.x)),
+    maxX: Math.max(...overviewPts.map((p) => p.x)),
+    minY: Math.min(...overviewPts.map((p) => p.y)),
+    maxY: Math.max(...overviewPts.map((p) => p.y)),
+  };
+  const fitOverview = (value: number, min: number, max: number) =>
+    max - min < 0.0001
+      ? 50
+      : OVERVIEW_MARGIN + ((value - min) / (max - min)) * (100 - 2 * OVERVIEW_MARGIN);
+
   const getMapPosition = (scene: TourScene) => {
     if (!scene.mapPosition || (!isOverview && !activeScene.mapPosition)) return null;
 
     if (isOverview) {
       return {
-        x: clampMapPoint(scene.mapPosition.x),
-        y: clampMapPoint(compressOverviewY(scene.mapPosition.y)),
+        x: clampMapPoint(fitOverview(scene.mapPosition.x, overviewBounds.minX, overviewBounds.maxX)),
+        y: clampMapPoint(fitOverview(scene.mapPosition.y, overviewBounds.minY, overviewBounds.maxY)),
       };
     }