diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 57fbd02..00c644b 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -62,3 +62,4 @@ jobs:
             VITE_TELEGRAM_BOT_USERNAME=
             VITE_APP_NAME=Cabinet
             VITE_APP_LOGO=V
+            VITE_APP_VERSION=${{ github.ref_name }}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index fe4ab04..8122984 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -34,6 +34,7 @@ jobs:
           VITE_TELEGRAM_BOT_USERNAME:
           VITE_APP_NAME: Bedolaga Cabinet
           VITE_APP_LOGO: V
+          VITE_APP_VERSION: ${{ github.ref_name }}
 
       - name: Create dist archive
         run: |
diff --git a/Dockerfile b/Dockerfile
index 8293e10..47c7a63 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -18,12 +18,14 @@ ARG VITE_API_URL=/api
 ARG VITE_TELEGRAM_BOT_USERNAME
 ARG VITE_APP_NAME=Cabinet
 ARG VITE_APP_LOGO=V
+ARG VITE_APP_VERSION
 
 # Set environment variables for build
 ENV VITE_API_URL=$VITE_API_URL
 ENV VITE_TELEGRAM_BOT_USERNAME=$VITE_TELEGRAM_BOT_USERNAME
 ENV VITE_APP_NAME=$VITE_APP_NAME
 ENV VITE_APP_LOGO=$VITE_APP_LOGO
+ENV VITE_APP_VERSION=$VITE_APP_VERSION
 
 # Build the application
 RUN npm run build
diff --git a/src/components/layout/Layout.tsx b/src/components/layout/Layout.tsx
index ad725d1..d3a4734 100644
--- a/src/components/layout/Layout.tsx
+++ b/src/components/layout/Layout.tsx
@@ -11,6 +11,7 @@ import { pollsApi } from '../../api/polls'
 import { brandingApi } from '../../api/branding'
 import { wheelApi } from '../../api/wheel'
 import { themeColorsApi } from '../../api/themeColors'
+import { promoApi } from '../../api/promo'
 import { useTheme } from '../../hooks/useTheme'
 
 // Fallback branding from environment variables
@@ -210,6 +211,17 @@ export default function Layout({ children }: LayoutProps) {
     retry: false,
   })
 
+  // Fetch active discount to determine mobile layout
+  const { data: activeDiscount } = useQuery({
+    queryKey: ['active-discount'],
+    queryFn: promoApi.getActiveDiscount,
+    enabled: isAuthenticated,
+    staleTime: 30000,
+  })
+
+  // Check if promo is active (to hide language switcher on mobile)
+  const isPromoActive = activeDiscount?.is_active && activeDiscount?.discount_percent
+
   const navItems = useMemo(() => {
     const items = [
       { path: '/', label: t('nav.dashboard'), icon: HomeIcon },
@@ -339,7 +351,10 @@ export default function Layout({ children }: LayoutProps) {
 
               <PromoDiscountBadge />
               <TicketNotificationBell isAdmin={isAdminActive()} />
-              <LanguageSwitcher />
+              {/* Hide language switcher on mobile when promo is active */}
+              <div className={isPromoActive ? 'hidden sm:block' : ''}>
+                <LanguageSwitcher />
+              </div>
 
               {/* Profile - Desktop */}
               <div className="hidden sm:flex items-center gap-3">
@@ -389,29 +404,33 @@ export default function Layout({ children }: LayoutProps) {
           <div className="absolute inset-x-0 top-0 bottom-0 bg-dark-900 border-t border-dark-800/50 overflow-y-auto pb-[calc(5rem+env(safe-area-inset-bottom,0px))]">
             <div className="max-w-6xl mx-auto px-4 py-4">
               {/* User info */}
-              <div className="flex items-center gap-3 pb-4 mb-4 border-b border-dark-800/50">
-                {userPhotoUrl ? (
-                  <img
-                    src={userPhotoUrl}
-                    alt="Avatar"
-                    className="w-10 h-10 rounded-full object-cover"
-                    onError={(e) => {
-                      e.currentTarget.style.display = 'none'
-                      e.currentTarget.nextElementSibling?.classList.remove('hidden')
-                    }}
-                  />
-                ) : null}
-                <div className={`w-10 h-10 rounded-full bg-dark-700 flex items-center justify-center ${userPhotoUrl ? 'hidden' : ''}`}>
-                  <UserIcon />
-                </div>
-                <div>
-                  <div className="text-sm font-medium text-dark-100">
-                    {user?.first_name || user?.username}
+              <div className="flex items-center justify-between pb-4 mb-4 border-b border-dark-800/50">
+                <div className="flex items-center gap-3">
+                  {userPhotoUrl ? (
+                    <img
+                      src={userPhotoUrl}
+                      alt="Avatar"
+                      className="w-10 h-10 rounded-full object-cover"
+                      onError={(e) => {
+                        e.currentTarget.style.display = 'none'
+                        e.currentTarget.nextElementSibling?.classList.remove('hidden')
+                      }}
+                    />
+                  ) : null}
+                  <div className={`w-10 h-10 rounded-full bg-dark-700 flex items-center justify-center ${userPhotoUrl ? 'hidden' : ''}`}>
+                    <UserIcon />
                   </div>
-                  <div className="text-xs text-dark-500">
-                    @{user?.username || `ID: ${user?.telegram_id}`}
+                  <div>
+                    <div className="text-sm font-medium text-dark-100">
+                      {user?.first_name || user?.username}
+                    </div>
+                    <div className="text-xs text-dark-500">
+                      @{user?.username || `ID: ${user?.telegram_id}`}
+                    </div>
                   </div>
                 </div>
+                {/* Language switcher in mobile menu when promo is active */}
+                {isPromoActive && <LanguageSwitcher />}
               </div>
 
               {/* Nav items */}
@@ -480,6 +499,15 @@ export default function Layout({ children }: LayoutProps) {
         <div className="animate-fade-in">
           {children}
         </div>
+
+        {/* Version footer for admin pages */}
+        {isAdminActive() && (
+          <div className="mt-8 pt-4 border-t border-dark-800/50 text-center">
+            <span className="text-xs text-dark-500">
+              Cabinet {__APP_VERSION__}
+            </span>
+          </div>
+        )}
       </main>
 
       {/* Mobile Bottom Navigation - only core items */}
diff --git a/src/vite-env.d.ts b/src/vite-env.d.ts
index c61a7b6..8add16d 100644
--- a/src/vite-env.d.ts
+++ b/src/vite-env.d.ts
@@ -1,5 +1,8 @@
 /// <reference types="vite/client" />
 
+// Global constant defined in vite.config.ts
+declare const __APP_VERSION__: string
+
 interface ImportMetaEnv {
   readonly VITE_API_URL: string
   readonly VITE_TELEGRAM_BOT_USERNAME?: string
diff --git a/vite.config.ts b/vite.config.ts
index 01d8f8a..45054e0 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -1,9 +1,26 @@
 import { defineConfig } from 'vite'
 import react from '@vitejs/plugin-react'
+import { execSync } from 'child_process'
+
+// Get version from Git tag or fallback to 'dev'
+function getGitVersion(): string {
+  try {
+    // Try to get version from git tag
+    return execSync('git describe --tags --always', { encoding: 'utf-8' }).trim()
+  } catch {
+    return 'dev'
+  }
+}
+
+const appVersion = process.env.VITE_APP_VERSION || getGitVersion()
 
 // https://vitejs.dev/config/
 export default defineConfig({
   plugins: [react()],
+  // Define global constants
+  define: {
+    __APP_VERSION__: JSON.stringify(appVersion),
+  },
   // Base path - use '/' for standalone Docker deployment
   // Change to '/cabinet/' if serving from a sub-path
   base: '/',