fix: remove all 'Сохранение...' text, show toast popup on save instead

src/app/admin/_components/SectionEditor.tsx

@@ -87,29 +87,19 @@ export function SectionEditor<T>({
 
   return (
     <div>
-      <div className="flex items-center justify-between gap-4">
       <h1 className="text-2xl font-bold">{title}</h1>
-        <div className="flex items-center gap-2 text-sm text-neutral-400">
-          {status === "saving" && (
-            <>
-              <Loader2 size={14} className="animate-spin" />
-              <span>Сохранение...</span>
-            </>
-          )}
-          {status === "saved" && (
-            <>
-              <Check size={14} className="text-emerald-400" />
-              <span className="text-emerald-400">Сохранено</span>
-            </>
-          )}
-          {status === "error" && (
-            <>
-              <AlertCircle size={14} className="text-red-400" />
-              <span className="text-red-400">{error}</span>
-            </>
-          )}
-        </div>
+
+      {/* Fixed toast popup */}
+      {(status === "saved" || status === "error") && (
+        <div className={`fixed bottom-4 right-4 z-50 flex items-center gap-2 rounded-lg border px-3 py-2 text-sm shadow-lg animate-in slide-in-from-right ${
+          status === "saved"
+            ? "bg-emerald-950/90 border-emerald-500/30 text-emerald-200"
+            : "bg-red-950/90 border-red-500/30 text-red-200"
+        }`}>
+          {status === "saved" && <><Check size={14} /> Сохранено</>}
+          {status === "error" && <><AlertCircle size={14} /> {error}</>}
         </div>
+      )}
 
       <div className="mt-6 space-y-6">{children(data, setData)}</div>
     </div>

src/app/admin/open-day/page.tsx

@@ -531,7 +531,6 @@ export default function OpenDayAdminPage() {
       <div className="flex items-center justify-between">
         <div>
           <h1 className="text-2xl font-bold">День открытых дверей</h1>
-          {saving && <span className="text-xs text-neutral-500">Сохранение...</span>}
         </div>
         <button
           onClick={deleteEvent}