diff --git a/src/app/admin/layout.tsx b/src/app/admin/layout.tsx
index 2431720..efcd463 100644
--- a/src/app/admin/layout.tsx
+++ b/src/app/admin/layout.tsx
@@ -23,6 +23,7 @@ import {
   ChevronLeft,
   ClipboardList,
   DoorOpen,
+  MessageSquare,
 } from "lucide-react";
 
 const NAV_ITEMS = [
@@ -39,6 +40,7 @@ const NAV_ITEMS = [
   { href: "/admin/pricing", label: "Цены", icon: DollarSign },
   { href: "/admin/faq", label: "FAQ", icon: HelpCircle },
   { href: "/admin/news", label: "Новости", icon: Newspaper },
+  { href: "/admin/popups", label: "Всплывающие окна", icon: MessageSquare },
   { href: "/admin/contact", label: "Контакты", icon: Phone },
 ];
 
diff --git a/src/app/admin/master-classes/page.tsx b/src/app/admin/master-classes/page.tsx
index e56a80b..bc9e71c 100644
--- a/src/app/admin/master-classes/page.tsx
+++ b/src/app/admin/master-classes/page.tsx
@@ -34,8 +34,6 @@ function PriceField({ label, value, onChange, placeholder }: { label: string; va
 
 interface MasterClassesData {
   title: string;
-  successMessage?: string;
-  waitingListText?: string;
   items: MasterClassItem[];
 }
 
@@ -386,21 +384,6 @@ export default function MasterClassesEditorPage() {
             onChange={(v) => update({ ...data, title: v })}
           />
 
-          <InputField
-            label="Текст после записи (success popup)"
-            value={data.successMessage || ""}
-            onChange={(v) => update({ ...data, successMessage: v || undefined })}
-            placeholder="Вы записаны! Мы свяжемся с вами"
-          />
-
-          <TextareaField
-            label="Текст для листа ожидания"
-            value={data.waitingListText || ""}
-            onChange={(v) => update({ ...data, waitingListText: v || undefined })}
-            placeholder="Все места заняты, но мы добавили вас в лист ожидания..."
-            rows={2}
-          />
-
           <ArrayEditor
             label="Мастер-классы"
             items={data.items}
diff --git a/src/app/admin/open-day/page.tsx b/src/app/admin/open-day/page.tsx
index 2205276..49662fe 100644
--- a/src/app/admin/open-day/page.tsx
+++ b/src/app/admin/open-day/page.tsx
@@ -19,8 +19,6 @@ interface OpenDayEvent {
   discountThreshold: number;
   minBookings: number;
   maxParticipants: number;
-  successMessage?: string;
-  waitingListText?: string;
   active: boolean;
 }
 
@@ -102,29 +100,6 @@ function EventSettings({
         />
       </div>
 
-      <div className="grid gap-4 sm:grid-cols-2">
-        <div>
-          <label className="block text-sm text-neutral-400 mb-1.5">Текст после записи</label>
-          <textarea
-            value={event.successMessage || ""}
-            onChange={(e) => onChange({ successMessage: e.target.value || undefined })}
-            rows={2}
-            className="w-full rounded-lg border border-white/10 bg-neutral-800 px-4 py-2.5 text-white placeholder-neutral-500 outline-none focus:border-gold transition-colors resize-none"
-            placeholder="Вы записаны!"
-          />
-        </div>
-        <div>
-          <label className="block text-sm text-neutral-400 mb-1.5">Текст для листа ожидания</label>
-          <textarea
-            value={event.waitingListText || ""}
-            onChange={(e) => onChange({ waitingListText: e.target.value || undefined })}
-            rows={2}
-            className="w-full rounded-lg border border-white/10 bg-neutral-800 px-4 py-2.5 text-white placeholder-neutral-500 outline-none focus:border-gold transition-colors resize-none"
-            placeholder="Все места заняты, но мы добавили вас в лист ожидания..."
-          />
-        </div>
-      </div>
-
       <div>
         <label className="block text-sm text-neutral-400 mb-1.5">Цена за занятие (BYN)</label>
         <input
diff --git a/src/app/admin/popups/page.tsx b/src/app/admin/popups/page.tsx
new file mode 100644
index 0000000..a9508d6
--- /dev/null
+++ b/src/app/admin/popups/page.tsx
@@ -0,0 +1,56 @@
+"use client";
+
+import { SectionEditor } from "../_components/SectionEditor";
+import { TextareaField } from "../_components/FormField";
+
+interface PopupsData {
+  successMessage: string;
+  waitingListText: string;
+  errorMessage: string;
+  instagramHint: string;
+}
+
+export default function PopupsEditorPage() {
+  return (
+    <SectionEditor<PopupsData>
+      sectionKey="popups"
+      title="Тексты всплывающих окон"
+    >
+      {(data, update) => (
+        <div className="space-y-6">
+          <p className="text-sm text-neutral-500">
+            Эти тексты используются во всех формах записи: мастер-классы, день открытых дверей, групповые занятия.
+          </p>
+
+          <TextareaField
+            label="Успешная запись"
+            value={data.successMessage}
+            onChange={(v) => update({ ...data, successMessage: v })}
+            rows={2}
+          />
+
+          <TextareaField
+            label="Лист ожидания"
+            value={data.waitingListText}
+            onChange={(v) => update({ ...data, waitingListText: v })}
+            rows={3}
+          />
+
+          <TextareaField
+            label="Ошибка при записи"
+            value={data.errorMessage}
+            onChange={(v) => update({ ...data, errorMessage: v })}
+            rows={2}
+          />
+
+          <TextareaField
+            label="Ссылка на Instagram (текст под сообщениями)"
+            value={data.instagramHint}
+            onChange={(v) => update({ ...data, instagramHint: v })}
+            rows={1}
+          />
+        </div>
+      )}
+    </SectionEditor>
+  );
+}
diff --git a/src/app/page.tsx b/src/app/page.tsx
index 07d6db8..4486e90 100644
--- a/src/app/page.tsx
+++ b/src/app/page.tsx
@@ -30,7 +30,7 @@ export default function HomePage() {
       <Header />
       <main>
         <Hero data={content.hero} />
-        {openDayData && <OpenDay data={openDayData} />}
+        {openDayData && <OpenDay data={openDayData} popups={content.popups} />}
         <About
           data={content.about}
           stats={{
@@ -41,7 +41,7 @@ export default function HomePage() {
         />
         <Team data={content.team} schedule={content.schedule.locations} />
         <Classes data={content.classes} />
-        <MasterClasses data={content.masterClasses} regCounts={mcRegCounts} />
+        <MasterClasses data={content.masterClasses} regCounts={mcRegCounts} popups={content.popups} />
         <Schedule data={content.schedule} classItems={content.classes.items} />
         <Pricing data={content.pricing} />
         <News data={content.news} />
diff --git a/src/components/sections/MasterClasses.tsx b/src/components/sections/MasterClasses.tsx
index a04e3b1..b3e1c4f 100644
--- a/src/components/sections/MasterClasses.tsx
+++ b/src/components/sections/MasterClasses.tsx
@@ -11,6 +11,7 @@ import type { SiteContent, MasterClassItem, MasterClassSlot } from "@/types";
 interface MasterClassesProps {
   data: SiteContent["masterClasses"];
   regCounts?: Record<string, number>;
+  popups?: SiteContent["popups"];
 }
 
 const MONTHS_RU = [
@@ -217,7 +218,7 @@ function MasterClassCard({
   );
 }
 
-export function MasterClasses({ data, regCounts = {} }: MasterClassesProps) {
+export function MasterClasses({ data, regCounts = {}, popups }: MasterClassesProps) {
   const [signupTitle, setSignupTitle] = useState<string | null>(null);
 
   const upcoming = useMemo(() => {
@@ -278,8 +279,10 @@ export function MasterClasses({ data, regCounts = {} }: MasterClassesProps) {
         subtitle={signupTitle ?? ""}
         endpoint="/api/master-class-register"
         extraBody={{ masterClassTitle: signupTitle }}
-        successMessage={data.successMessage}
-        waitingMessage={data.waitingListText}
+        successMessage={popups?.successMessage}
+        waitingMessage={popups?.waitingListText}
+        errorMessage={popups?.errorMessage}
+        instagramHint={popups?.instagramHint}
       />
     </section>
   );
diff --git a/src/components/sections/OpenDay.tsx b/src/components/sections/OpenDay.tsx
index b233c77..5b9e6e1 100644
--- a/src/components/sections/OpenDay.tsx
+++ b/src/components/sections/OpenDay.tsx
@@ -6,12 +6,14 @@ import { SectionHeading } from "@/components/ui/SectionHeading";
 import { Reveal } from "@/components/ui/Reveal";
 import { SignupModal } from "@/components/ui/SignupModal";
 import type { OpenDayEvent, OpenDayClass } from "@/lib/openDay";
+import type { SiteContent } from "@/types";
 
 interface OpenDayProps {
   data: {
     event: OpenDayEvent;
     classes: OpenDayClass[];
   };
+  popups?: SiteContent["popups"];
 }
 
 function formatDateRu(dateStr: string): string {
@@ -23,7 +25,7 @@ function formatDateRu(dateStr: string): string {
   });
 }
 
-export function OpenDay({ data }: OpenDayProps) {
+export function OpenDay({ data, popups }: OpenDayProps) {
   const { event, classes } = data;
   const [signup, setSignup] = useState<{ classId: number; label: string } | null>(null);
 
@@ -132,8 +134,10 @@ export function OpenDay({ data }: OpenDayProps) {
           subtitle={signup.label}
           endpoint="/api/open-day-register"
           extraBody={{ classId: signup.classId, eventId: event.id }}
-          successMessage={event.successMessage}
-          waitingMessage={event.waitingListText}
+          successMessage={popups?.successMessage}
+          waitingMessage={popups?.waitingListText}
+          errorMessage={popups?.errorMessage}
+          instagramHint={popups?.instagramHint}
         />
       )}
     </section>
diff --git a/src/components/ui/SignupModal.tsx b/src/components/ui/SignupModal.tsx
index 62abf3e..3957496 100644
--- a/src/components/ui/SignupModal.tsx
+++ b/src/components/ui/SignupModal.tsx
@@ -18,6 +18,10 @@ interface SignupModalProps {
   successMessage?: string;
   /** Custom waiting list message */
   waitingMessage?: string;
+  /** Custom error message */
+  errorMessage?: string;
+  /** Custom Instagram hint text */
+  instagramHint?: string;
   /** Callback with API response data on success */
   onSuccess?: (data: Record<string, unknown>) => void;
 }
@@ -31,6 +35,8 @@ export function SignupModal({
   extraBody,
   successMessage,
   waitingMessage,
+  errorMessage,
+  instagramHint,
   onSuccess,
 }: SignupModalProps) {
   const [name, setName] = useState("");
@@ -167,7 +173,7 @@ export function SignupModal({
                   className="mt-3 inline-flex items-center gap-1.5 text-sm text-pink-400 hover:text-pink-300"
                 >
                   <Instagram size={14} />
-                  По вопросам пишите в Instagram
+                  {instagramHint || "По вопросам пишите в Instagram"}
                 </a>
               </>
             ) : (
@@ -190,7 +196,7 @@ export function SignupModal({
             </div>
             <h3 className="text-lg font-bold text-white">Что-то пошло не так</h3>
             <p className="mt-2 text-sm text-neutral-400">
-              Не удалось отправить заявку. Свяжитесь с нами через Instagram — мы запишем вас!
+              {errorMessage || "Не удалось отправить заявку. Свяжитесь с нами через Instagram — мы запишем вас!"}
             </p>
             <button
               onClick={openInstagramDM}
diff --git a/src/data/content.ts b/src/data/content.ts
index 9ba5543..39e1f32 100644
--- a/src/data/content.ts
+++ b/src/data/content.ts
@@ -312,6 +312,12 @@ export const siteContent: SiteContent = {
     title: "Мастер-классы",
     items: [],
   },
+  popups: {
+    successMessage: "Вы записаны!",
+    waitingListText: "Все места заняты, но мы добавили вас в лист ожидания.\nЕсли кто-то откажется — мы предложим место вам.",
+    errorMessage: "Не удалось отправить заявку. Свяжитесь с нами через Instagram — мы запишем вас!",
+    instagramHint: "По вопросам пишите в Instagram",
+  },
   schedule: {
     title: "Расписание",
     locations: [
diff --git a/src/lib/db.ts b/src/lib/db.ts
index dffc1ea..8d62602 100644
--- a/src/lib/db.ts
+++ b/src/lib/db.ts
@@ -519,6 +519,7 @@ const SECTION_KEYS = [
   "schedule",
   "news",
   "contact",
+  "popups",
 ] as const;
 
 export function getSiteContent(): SiteContent | null {
@@ -549,6 +550,12 @@ export function getSiteContent(): SiteContent | null {
     pricing: sections.pricing,
     schedule: sections.schedule,
     news: sections.news ?? { title: "Новости", items: [] },
+    popups: sections.popups ?? {
+      successMessage: "Вы записаны!",
+      waitingListText: "Все места заняты, но мы добавили вас в лист ожидания.\nЕсли кто-то откажется — мы предложим место вам.",
+      errorMessage: "Не удалось отправить заявку. Свяжитесь с нами через Instagram — мы запишем вас!",
+      instagramHint: "По вопросам пишите в Instagram",
+    },
     contact: sections.contact,
     team: {
       title: teamSection.title || "",
@@ -1014,8 +1021,6 @@ export interface OpenDayEvent {
   discountThreshold: number;
   minBookings: number;
   maxParticipants: number;
-  successMessage?: string;
-  waitingListText?: string;
   active: boolean;
 }
 
@@ -1098,8 +1103,6 @@ function mapEventRow(r: OpenDayEventRow): OpenDayEvent {
     discountThreshold: r.discount_threshold,
     minBookings: r.min_bookings,
     maxParticipants: r.max_participants ?? 0,
-    successMessage: r.success_message ?? undefined,
-    waitingListText: r.waiting_list_text ?? undefined,
     active: !!r.active,
   };
 }
@@ -1219,8 +1222,6 @@ export function updateOpenDayEvent(
     discountThreshold: number;
     minBookings: number;
     maxParticipants: number;
-    successMessage: string;
-    waitingListText: string;
     active: boolean;
   }>
 ): void {
@@ -1235,8 +1236,6 @@ export function updateOpenDayEvent(
   if (data.discountThreshold !== undefined) { sets.push("discount_threshold = ?"); vals.push(data.discountThreshold); }
   if (data.minBookings !== undefined) { sets.push("min_bookings = ?"); vals.push(data.minBookings); }
   if (data.maxParticipants !== undefined) { sets.push("max_participants = ?"); vals.push(data.maxParticipants); }
-  if (data.successMessage !== undefined) { sets.push("success_message = ?"); vals.push(data.successMessage || null); }
-  if (data.waitingListText !== undefined) { sets.push("waiting_list_text = ?"); vals.push(data.waitingListText || null); }
   if (data.active !== undefined) { sets.push("active = ?"); vals.push(data.active ? 1 : 0); }
   if (sets.length === 0) return;
   sets.push("updated_at = datetime('now')");
diff --git a/src/types/content.ts b/src/types/content.ts
index 0c009c7..af6d43d 100644
--- a/src/types/content.ts
+++ b/src/types/content.ts
@@ -135,10 +135,14 @@ export interface SiteContent {
   };
   masterClasses: {
     title: string;
-    successMessage?: string;
-    waitingListText?: string;
     items: MasterClassItem[];
   };
+  popups: {
+    successMessage: string;
+    waitingListText: string;
+    errorMessage: string;
+    instagramHint: string;
+  };
   schedule: {
     title: string;
     locations: ScheduleLocation[];