refactor: convert admin pages to Tailwind and improve media uploads; fix TypeScript error in commandocentrum

src/app/admin/settings/page.tsx

@@ -54,7 +54,7 @@ export default async function AdminSettings() {
         ) : (
           <div className="grid">
             {settings.map((s) => (
-              <div key={s.key} className="card">
+              <div key={s.key} className="admin-card">
                 <div style={{ display: "flex", gap: "0.75rem", alignItems: "baseline" }}>
                   <strong style={{ minWidth: 220 }}>{s.key}</strong>
                   <form