vision refactor

app/vision/page.tsx

@@ -350,6 +350,21 @@ export default function VisionPage() {
     setJitsiUrl(null);
   };
 
+  // Hide footer when in conference mode
+  useEffect(() => {
+    if (selectedConference && jitsiUrl) {
+      const footer = document.querySelector('footer');
+      if (footer) {
+        (footer as HTMLElement).style.display = 'none';
+      }
+      return () => {
+        if (footer) {
+          (footer as HTMLElement).style.display = '';
+        }
+      };
+    }
+  }, [selectedConference, jitsiUrl]);
+
   // Check if meeting can be joined (5 minutes before start until end)
   const canJoinMeeting = (meeting: ScheduledMeeting): boolean => {
     if (!meeting.start || !meeting.end) {
@@ -747,19 +762,8 @@ export default function VisionPage() {
   if (selectedConference && jitsiUrl) {
     return (
       <main className="w-full h-[calc(100vh-3rem)] bg-black flex flex-col mt-12">
-        {/* Floating back button */}
+        {/* Jitsi iframe - full height without footer space */}
-        <Button
+        <div className="flex-1 overflow-hidden h-full">
-          variant="ghost"
-          size="sm"
-          onClick={handleBack}
-          className="absolute top-16 left-4 z-10 bg-white/90 hover:bg-white text-gray-900 shadow-lg"
-        >
-          <ArrowLeft className="h-4 w-4 mr-2" />
-          Retour
-        </Button>
-        
-        {/* Jitsi iframe */}
-        <div className="flex-1 overflow-hidden">
           <ResponsiveIframe 
             src={jitsiUrl}
             allow="camera; microphone; fullscreen; display-capture; autoplay; clipboard-write; encrypted-media"