diff --git a/src/components/layout/layout.tsx b/src/components/layout/layout.tsx
index c0e3434..6d4448c 100644
--- a/src/components/layout/layout.tsx
+++ b/src/components/layout/layout.tsx
@@ -1,27 +1,36 @@
 import { ReactNode } from 'react'
-import { Outlet } from 'react-router-dom'
+import { Outlet, useOutletContext } from 'react-router-dom'
 
-import { Header, HeaderProps } from '@/components'
+import { Header, HeaderProps, Spinner } from '@/components'
 import { useMeQuery } from '@/services/auth/auth.service'
 
 import s from './layout.module.scss'
 
+type AuthContext = {
+  isAuthenticated: boolean
+}
+
+export function useAuthContext() {
+  return useOutletContext<AuthContext>()
+}
+
 export const Layout = () => {
   const { data, isError, isLoading } = useMeQuery()
+  const isAuthenticated = !isError && !isLoading
 
   if (isLoading) {
-    return <div>loading...</div>
+    return <Spinner fullScreen />
   }
 
   return (
     <LayoutPrimitive
       avatar={data?.avatar ?? null}
       email={data?.email ?? ''}
-      isLoggedIn={!isError && !!data}
+      isLoggedIn={isAuthenticated}
       onLogout={() => {}}
       userName={data?.name ?? ''}
     >
-      <Outlet />
+      <Outlet context={{ isAuthenticated } satisfies AuthContext} />
     </LayoutPrimitive>
   )
 }
diff --git a/src/components/ui/index.ts b/src/components/ui/index.ts
index 594e76e..cf20b41 100644
--- a/src/components/ui/index.ts
+++ b/src/components/ui/index.ts
@@ -1,3 +1,4 @@
+export * from './spinner'
 export * from './avatar'
 export * from './dropdown'
 export * from '../layout/header'
diff --git a/src/components/ui/spinner/index.ts b/src/components/ui/spinner/index.ts
new file mode 100644
index 0000000..21591ec
--- /dev/null
+++ b/src/components/ui/spinner/index.ts
@@ -0,0 +1 @@
+export * from './spinner'
diff --git a/src/components/ui/spinner/spinner.module.scss b/src/components/ui/spinner/spinner.module.scss
new file mode 100644
index 0000000..480017c
--- /dev/null
+++ b/src/components/ui/spinner/spinner.module.scss
@@ -0,0 +1,57 @@
+.fullScreenContainer {
+  position: fixed;
+  z-index: 9999;
+  top: var(--header-height);
+  left: 0;
+
+  display: flex;
+  align-items: center;
+  justify-content: center;
+
+  width: 100vw;
+  height: calc(100vh - var(--header-height));
+
+  background-color: rgb(0 0 0 / 50%);
+}
+
+.loader {
+  position: relative;
+
+  display: inline-block;
+
+  box-sizing: border-box;
+  width: 48px;
+  height: 48px;
+
+  border: 3px solid #fff;
+  border-radius: 50%;
+
+  animation: rotation 1s linear infinite;
+}
+
+.loader::after {
+  content: '';
+
+  position: absolute;
+  top: 50%;
+  left: 50%;
+  transform: translate(-50%, -50%);
+
+  box-sizing: border-box;
+  width: 40px;
+  height: 40px;
+
+  border: 3px solid transparent;
+  border-bottom-color: var(--color-accent-500);
+  border-radius: 50%;
+}
+
+@keyframes rotation {
+  0% {
+    transform: rotate(0deg);
+  }
+
+  100% {
+    transform: rotate(360deg);
+  }
+}
diff --git a/src/components/ui/spinner/spinner.stories.tsx b/src/components/ui/spinner/spinner.stories.tsx
new file mode 100644
index 0000000..038a9e3
--- /dev/null
+++ b/src/components/ui/spinner/spinner.stories.tsx
@@ -0,0 +1,19 @@
+import type { Meta, StoryObj } from '@storybook/react'
+
+import { Spinner } from './'
+
+const meta = {
+  component: Spinner,
+  parameters: {
+    layout: 'centered',
+  },
+  tags: ['autodocs'],
+  title: 'Components/Spinner',
+} satisfies Meta<typeof Spinner>
+
+export default meta
+type Story = StoryObj<typeof meta>
+
+export const Default: Story = {
+  args: {},
+}
diff --git a/src/components/ui/spinner/spinner.tsx b/src/components/ui/spinner/spinner.tsx
new file mode 100644
index 0000000..ff1a335
--- /dev/null
+++ b/src/components/ui/spinner/spinner.tsx
@@ -0,0 +1,30 @@
+import { CSSProperties, ComponentPropsWithoutRef, ElementRef, forwardRef } from 'react'
+
+import { clsx } from 'clsx'
+
+import s from './spinner.module.scss'
+
+export type SpinnerProps = {
+  fullScreen?: boolean
+  size?: CSSProperties['width']
+} & ComponentPropsWithoutRef<'span'>
+
+export const Spinner = forwardRef<ElementRef<'span'>, SpinnerProps>(
+  ({ className, fullScreen, size = '48px', style, ...rest }, ref) => {
+    const styles = {
+      height: size,
+      width: size,
+      ...style,
+    } satisfies CSSProperties
+
+    if (fullScreen) {
+      return (
+        <div className={s.fullScreenContainer}>
+          <span className={clsx(s.loader, className)} ref={ref} style={styles} {...rest} />
+        </div>
+      )
+    }
+
+    return <span className={clsx(s.loader, className)} ref={ref} style={styles} {...rest} />
+  }
+)
diff --git a/src/pages/decks-page/decks-page.tsx b/src/pages/decks-page/decks-page.tsx
index 0b11186..0a3f0f4 100644
--- a/src/pages/decks-page/decks-page.tsx
+++ b/src/pages/decks-page/decks-page.tsx
@@ -1,6 +1,6 @@
 import { useState } from 'react'
 
-import { Button, DecksTable, Page, Slider, TextField, Typography } from '@/components'
+import { Button, DecksTable, Page, Slider, Spinner, TextField, Typography } from '@/components'
 import { DeckDialog } from '@/components/decks/deck-dialog'
 import { DeleteDeckDialog } from '@/components/decks/delete-deck-dialog'
 import { Pagination } from '@/components/ui/pagination'
@@ -81,7 +81,7 @@ export const DecksPage = () => {
   const openCreateModal = () => setShowCreateModal(true)
 
   if (!decks || !me) {
-    return <div>loading...</div>
+    return <Spinner fullScreen />
   }
 
   return (
diff --git a/src/router.tsx b/src/router.tsx
index 83a4e2f..18b6627 100644
--- a/src/router.tsx
+++ b/src/router.tsx
@@ -6,11 +6,10 @@ import {
   createBrowserRouter,
 } from 'react-router-dom'
 
-import { Layout } from '@/components/layout'
+import { Layout, useAuthContext } from '@/components/layout'
 import { DeckPage } from '@/pages/deck-page/deck-page'
 
 import { DecksPage, SignInPage } from './pages'
-import { useMeQuery } from './services/auth/auth.service'
 
 const publicRoutes: RouteObject[] = [
   {
@@ -49,22 +48,11 @@ const router = createBrowserRouter([
 ])
 
 export const Router = () => {
-  const { isLoading } = useMeQuery()
-
-  if (isLoading) {
-    return <div>loading...</div>
-  }
-
   return <RouterProvider router={router} />
 }
 
 function PrivateRoutes() {
-  const { isError, isLoading } = useMeQuery()
-
-  if (isLoading) {
-    return <div>loading...</div>
-  }
-  const isAuthenticated = !isError
+  const { isAuthenticated } = useAuthContext()
 
   return isAuthenticated ? <Outlet /> : <Navigate to={'/login'} />
 }