diff --git a/app.py b/app.py
index 71e8145..28caaf0 100644
--- a/app.py
+++ b/app.py
@@ -2140,13 +2140,20 @@ def public_frontend():
   const sStatus = document.getElementById('submitStatus');
   let sOpen = false;
 
+  const sBackdrop = document.getElementById('chatBackdrop');
+
   sBubble.addEventListener('click', () => {
     sOpen = !sOpen;
     sOverlay.classList.toggle('open', sOpen);
+    if (sBackdrop) sBackdrop.classList.toggle('open', sOpen);
     const chatO = document.getElementById('chatOverlay');
     if (chatO) chatO.classList.remove('open');
   });
-  sClose.addEventListener('click', () => { sOpen = false; sOverlay.classList.remove('open'); });
+  sClose.addEventListener('click', () => {
+    sOpen = false;
+    sOverlay.classList.remove('open');
+    if (sBackdrop) sBackdrop.classList.remove('open');
+  });
 
   sSend.addEventListener('click', async () => {
     const name = document.getElementById('subName').value.trim();
@@ -2304,12 +2311,15 @@ def public_frontend():
     if (backdrop) backdrop.classList.remove('open');
   });
 
-  // Click backdrop to close
+  // Click backdrop to close either overlay
   if (backdrop) {
     backdrop.addEventListener('click', () => {
       open = false;
       overlay.classList.remove('open');
       backdrop.classList.remove('open');
+      // Also close submit overlay if open
+      const sO = document.getElementById('submitOverlay');
+      if (sO) { sO.classList.remove('open'); }
     });
   }