feat: add page admin with sidebar and main cards

src/app/admin/page.tsx

@@ -46,12 +46,14 @@ export default function Admin() {
           <nav className="my-6">
             <ul className="space-y-4">
               {areas.map((area) => (
-                <li
-                  key={area.title}
-                  className="flex justify-between border-b border-green-400 py-2"
-                >
-                  <Link href="#">{area.title}</Link>
-                  <Pencil className="text-green-400" />
+                <li key={area.title} className="border-b border-green-400">
+                  <Link
+                    href="#"
+                    className="flex justify-between py-2 hover:bg-green-400/10"
+                  >
+                    <span>{area.title}</span>
+                    <Pencil className="text-green-400" />
+                  </Link>
                 </li>
               ))}
             </ul>