chore: initial project import

app/unauthorized/page.tsx

@@ -0,0 +1,22 @@
+import { Button, PageHeader, SectionCard } from "@/components/ui";
+import { getLocale, getTranslator } from "@/lib/i18n";
+
+export default async function UnauthorizedPage() {
+  const t = getTranslator(await getLocale());
+
+  return (
+    <main className="min-h-screen bg-background px-6 py-16">
+      <div className="mx-auto w-full max-w-2xl rounded-[1.5rem] bg-surface-container-lowest p-4 shadow-card md:p-8">
+        <PageHeader title={t("pages", "unauthorized_title")} description={t("pages", "unauthorized_desc")} />
+        <div className="mt-8">
+          <SectionCard title={t("pages", "unauthorized_subtitle")}>
+            <p className="text-sm text-on-surface-variant">{t("pages", "unauthorized_desc")}</p>
+            <div className="mt-4">
+              <Button href="/login">{t("common", "back_to_login")}</Button>
+            </div>
+          </SectionCard>
+        </div>
+      </div>
+    </main>
+  );
+}