diff --git a/messages/en.json b/messages/en.json
index cff59c3..cc96850 100644
--- a/messages/en.json
+++ b/messages/en.json
@@ -54,5 +54,29 @@
     "HidePasswordTooltip": "Hide password",
     "Submit": "Save new password",
     "PasswordUpdatedSuccessfully": "Password updated successfully"
+  },
+  "Navigation": {
+    "Home": "Home",
+    "Dashboard": "Dashboard",
+    "Settings": "Settings",
+    "SignIn": "Sign in",
+    "SignUp": "Sign up",
+    "SignOut": "Sign out"
+  },
+  "Fallback": {
+    "Loading": {
+      "Title": "Loading...",
+      "Description": "Please wait while we load the content."
+    },
+    "NotFound": {
+      "Title": "Page not found",
+      "Description": "Sorry, the page you're looking for doesn't exist.",
+      "GoHome": "Go back home"
+    },
+    "Error": {
+      "Title": "Something went wrong",
+      "Description": "An unexpected error occurred. Please try again.",
+      "Retry": "Try again"
+    }
   }
 }
diff --git a/messages/pl.json b/messages/pl.json
index 230fa55..411a598 100644
--- a/messages/pl.json
+++ b/messages/pl.json
@@ -54,5 +54,29 @@
     "HidePasswordTooltip": "Ukryj hasło",
     "Submit": "Zapisz nowe hasło",
     "PasswordUpdatedSuccessfully": "Hasło zostało zmienione"
+  },
+  "Navigation": {
+    "Home": "Strona główna",
+    "Dashboard": "Panel",
+    "Settings": "Ustawienia",
+    "SignIn": "Zaloguj się",
+    "SignUp": "Zarejestruj się",
+    "SignOut": "Wyloguj się"
+  },
+  "Fallback": {
+    "Loading": {
+      "Title": "Ładowanie...",
+      "Description": "Proszę czekać, trwa ładowanie zawartości."
+    },
+    "NotFound": {
+      "Title": "Strona nie znaleziona",
+      "Description": "Przepraszamy, ale strona której szukasz nie istnieje.",
+      "GoHome": "Wróć do strony głównej"
+    },
+    "Error": {
+      "Title": "Wystąpił błąd",
+      "Description": "Coś poszło nie tak. Spróbuj ponownie.",
+      "Retry": "Spróbuj ponownie"
+    }
   }
 }