Fix theme consistency, i18n completeness, CSS variable naming, and hardcoded strings

src/app/admin/applications/page.tsx

@@ -72,7 +72,7 @@ export default async function AdminApplications() {
         {applications.length === 0 ? (
           <div className="admin-empty">{t("noApplications")}</div>
         ) : (
-          <div className="grid cols-2">
+          <div className="grid grid-cols-1 gap-4 md:grid-cols-2">
             {applications.map((a) => {
               const username = userMap.get(a.userId);
               return (