diff --git a/app.js b/app.js
index a9857cf..e2b2f8d 100644
--- a/app.js
+++ b/app.js
@@ -1212,6 +1212,8 @@ function setupHoverEvents(sunburstData) {
     let isOverChartSector = false;  // Track if mouse is over any chart sector
     let lastMouseX = 0;
     let lastMouseY = 0;
+    let mouseMovingTimeout = null;  // Timer to detect mouse inactivity
+    let isMouseMoving = false;  // Track if mouse is actively moving
 
     // Calculate the center angle of a sector based on its data
     function getSectorLayoutFromChart(params) {
@@ -1243,6 +1245,42 @@ function setupHoverEvents(sunburstData) {
 
     // Track current hovered sector for persistent button display
     let currentHoveredSectorParams = null;
+    let pendingButtonPosition = null;  // Store button position when mouse stops
+
+    // Update button visibility based on mouse movement state
+    function updateButtonVisibility() {
+        if (!chartEyeBtn) return;
+
+        // Show button if mouse is moving OR hovering over the button itself
+        if ((isMouseMoving || isOverEyeButton) && pendingButtonPosition) {
+            chartEyeBtn.style.left = pendingButtonPosition.left;
+            chartEyeBtn.style.top = pendingButtonPosition.top;
+            chartEyeBtn.style.transform = pendingButtonPosition.transform;
+            chartEyeBtn.style.display = 'flex';
+        } else if (!isOverEyeButton) {
+            chartEyeBtn.style.display = 'none';
+        }
+    }
+
+    // Handle mouse movement on chart - show button while moving, hide after 1 second of inactivity
+    function onChartMouseMove() {
+        isMouseMoving = true;
+        updateButtonVisibility();
+
+        // Clear existing timeout
+        if (mouseMovingTimeout) {
+            clearTimeout(mouseMovingTimeout);
+        }
+
+        // Set timeout to hide button after 1 second of no movement
+        mouseMovingTimeout = setTimeout(() => {
+            isMouseMoving = false;
+            updateButtonVisibility();
+        }, 1000);
+    }
+
+    // Add mousemove listener to chart container
+    chartDom.addEventListener('mousemove', onChartMouseMove);
 
     // Position and show the floating eye button near the hovered sector
     function showChartEyeButton(params) {
@@ -1289,13 +1327,18 @@ function setupHoverEvents(sunburstData) {
                 rotationDeg += 180;
             }
 
-            // Center the 24px button
-            chartEyeBtn.style.left = (buttonX - 12) + 'px';
-            chartEyeBtn.style.top = (buttonY - 12) + 'px';
-            chartEyeBtn.style.transform = `rotate(${rotationDeg}deg)`;
-            chartEyeBtn.style.display = 'flex';
+            // Store the button position
+            pendingButtonPosition = {
+                left: (buttonX - 12) + 'px',
+                top: (buttonY - 12) + 'px',
+                transform: `rotate(${rotationDeg}deg)`
+            };
+
+            // Only show if mouse is moving or hovering over button
+            updateButtonVisibility();
         } else {
-            // Fallback: hide the button if we can't get layout
+            // Fallback: clear pending position if we can't get layout
+            pendingButtonPosition = null;
             chartEyeBtn.style.display = 'none';
         }
     }