diff --git a/src/app/globals.css b/src/app/globals.css
index f392303..0c40c5c 100644
--- a/src/app/globals.css
+++ b/src/app/globals.css
@@ -220,7 +220,7 @@ a {
   --bs-alert-border-color: #205a38;
 }
 
-/* ── App-Shell / Seitenleiste (nur auf der Projektseite) ────────────────── */
+/* ── App-Shell / Seitenleiste (alle Seiten außer der Seitenansicht) ──── */
 
 .app-shell {
   display: grid;
diff --git a/src/frontend/components/AppShell.tsx b/src/frontend/components/AppShell.tsx
index bbfa0ae..77b7c78 100644
--- a/src/frontend/components/AppShell.tsx
+++ b/src/frontend/components/AppShell.tsx
@@ -4,12 +4,14 @@ import { useEffect, useState } from "react";
 import { usePathname } from "next/navigation";
 import { Sidebar } from "./Sidebar";
 
-const PROJECT_AREA_PATTERN = /^\/projects(\/[^/]+)?$/;
+// Every page shows the (collapsible) sidebar except the print view, which is
+// a stand-alone document opened in its own tab and printed as PDF.
+const PRINT_VIEW_PATTERN = /^\/projects\/[^/]+\/print(\/|$)/;
 const SIDEBAR_COLLAPSED_STORAGE_KEY = "leistungsbilanz:sidebar-collapsed";
 
 export function AppShell({ children }: { children: React.ReactNode }) {
   const pathname = usePathname();
-  const showSidebar = PROJECT_AREA_PATTERN.test(pathname ?? "");
+  const showSidebar = !PRINT_VIEW_PATTERN.test(pathname ?? "");
   const [isSidebarCollapsed, setIsSidebarCollapsed] = useState(false);
 
   useEffect(() => {