diff --git a/frontend/src/components/Layout.tsx b/frontend/src/components/Layout.tsx
index d7375c5..a5b58ca 100644
--- a/frontend/src/components/Layout.tsx
+++ b/frontend/src/components/Layout.tsx
@@ -27,11 +27,14 @@ export default function Layout() {
   const { privacyMode, togglePrivacy } = usePrivacy();
   const { pathname } = useLocation();
   const title = titleFor(pathname);
+  // Asistente hosts its own scroll container (the chat), so its route caps
+  // the shell at the viewport; every other page keeps normal body scroll.
+  const fullHeight = pathname === "/asistente";
 
   return (
     <SidebarProvider>
       <AppSidebar />
-      <SidebarInset>
+      <SidebarInset className={fullHeight ? "h-svh overflow-hidden" : undefined}>
         <header className="sticky top-0 z-40 flex h-14 shrink-0 items-center gap-2 border-b border-border bg-background/90 px-4 backdrop-blur-sm">
           <SidebarTrigger className="-ml-1" />
           <Separator