fix: enforce semantic contrast across admin

src/app/admin/maintenance/page.tsx

@@ -65,13 +65,13 @@ export default async function AdminMaintenance() {
         <h2 className="admin-section-title">{t("currentState")}</h2>
         <div className="admin-card flex items-center gap-3">
           <span
-            className={`inline-block text-[0.72rem] font-bold px-2 py-0.5 rounded-full ${enabled ? "bg-red-500/22 text-[var(--color-text)]" : "bg-green-600/20 text-[var(--color-text)]"}`}
+            className={`inline-block text-[0.72rem] font-bold px-2 py-0.5 rounded-full ${enabled ? "bg-[var(--color-error-subtle)] text-[var(--color-text)]" : "bg-[var(--color-success-subtle)] text-[var(--color-text)]"}`}
           >
             {enabled ? t("enabled") : t("disabled")}
           </span>
           <div>
             <strong>{t("maintenanceCurrently", { status: enabled ? t("enabled") : t("disabled") })}</strong>
-            <p className="text-xs text-gray-500 dark:text-gray-400 mt-1 m-0">
+            <p className="text-xs theme-text-muted dark:theme-text-muted mt-1 m-0">
               {enabled ? t("onlyRankCanLogin", { rank: minRankValue }) : t("hotelOpenToEveryone")}
             </p>
           </div>
@@ -94,7 +94,7 @@ export default async function AdminMaintenance() {
           </label>
 
           <div className="mb-4 max-w-[220px]">
-            <label htmlFor="mt-min-rank" className="text-sm text-gray-500 dark:text-gray-400 block mb-1">
+            <label htmlFor="mt-min-rank" className="text-sm theme-text-muted dark:theme-text-muted block mb-1">
               {t("minLoginRankLabel")}
             </label>
             <input
@@ -109,7 +109,7 @@ export default async function AdminMaintenance() {
           </div>
 
           <div className="mb-4">
-            <label htmlFor="mt-message" className="text-sm text-gray-500 dark:text-gray-400 block mb-1">
+            <label htmlFor="mt-message" className="text-sm theme-text-muted dark:theme-text-muted block mb-1">
               {t("maintenanceMessageLabel")}
             </label>
             <textarea