fix: enforce semantic contrast across admin

src/app/admin/email-templates/page.tsx

@@ -50,7 +50,7 @@ export default async function AdminEmailTemplates() {
           <input name="variables" placeholder={t("form.variablesPlaceholder")} className="min-w-[200px]" />
           <label className="flex items-center gap-2">
             <input type="checkbox" name="isActive" defaultChecked className="w-auto" />
-            <span className="text-sm text-gray-500 dark:text-gray-400">{t("form.active")}</span>
+            <span className="text-sm theme-text-muted dark:theme-text-muted">{t("form.active")}</span>
           </label>
         </div>
         <textarea
@@ -94,7 +94,7 @@ export default async function AdminEmailTemplates() {
                       defaultChecked={template.isActive}
                       className="w-auto"
                     />
-                    <span className="text-sm text-gray-500 dark:text-gray-400">{t("form.active")}</span>
+                    <span className="text-sm theme-text-muted dark:theme-text-muted">{t("form.active")}</span>
                   </label>
                 </div>
                 <textarea
@@ -109,7 +109,7 @@ export default async function AdminEmailTemplates() {
                     {t("save")}
                   </button>
                   {template.updatedAt ? (
-                    <span className="text-xs text-gray-500 dark:text-gray-400">
+                    <span className="text-xs theme-text-muted dark:theme-text-muted">
                       {t("updated", {
                         date: new Date(template.updatedAt).toISOString().slice(0, 16).replace("T", " "),
                       })}