diff --git a/src/components/Course/CourseView.tsx b/src/components/Course/CourseView.tsx
index fc0d188c9..1b3b23931 100644
--- a/src/components/Course/CourseView.tsx
+++ b/src/components/Course/CourseView.tsx
@@ -1,4 +1,4 @@
-import { lazy, type ReactNode } from 'react';
+import { lazy, useEffect, useState, type ReactNode } from 'react';
 import type { LessonFileType } from '../../lib/course';
 import { CourseLayout, type CourseLayoutProps } from './CourseLayout';
 import {
@@ -6,6 +6,9 @@ import {
   ResizablePanel,
   ResizablePanelGroup,
 } from '../Resizable';
+import { isLoggedIn } from '../../lib/jwt';
+import { IdCardIcon, Loader2Icon } from 'lucide-react';
+import { showLoginPopup } from '../../lib/popup';
 
 const SqlCodeEditor = lazy(() =>
   import('../SqlCodeEditor/SqlCodeEditor').then((module) => ({
@@ -38,6 +41,45 @@ export function CourseView(props: CourseViewProps) {
     'lesson-quiz',
   ].includes(lessonType);
 
+  const [isLoading, setIsLoading] = useState(true);
+  const isAuthenticated = isLoggedIn();
+
+  useEffect(() => {
+    if (isAuthenticated === undefined) {
+      return;
+    }
+
+    setIsLoading(false);
+  }, [isAuthenticated]);
+
+  if (isLoading) {
+    return (
+      <div className="mx-auto flex h-screen max-w-sm flex-col items-center justify-center gap-2 p-4 text-gray-700">
+        <Loader2Icon className="size-10 animate-spin stroke-[2.5]" />
+      </div>
+    );
+  }
+
+  if (!isAuthenticated) {
+    return (
+      <div className="mx-auto flex h-screen max-w-sm flex-col items-center justify-center gap-2 p-4 text-gray-700">
+        <IdCardIcon className="size-24" />
+        <p className="text-balance text-center text-lg font-medium">
+          You need to be logged in to access this course.
+        </p>
+
+        <button
+          className="flex items-center gap-1 rounded-lg border border-gray-400 px-4 py-2 text-sm font-medium leading-none transition-colors hover:bg-black hover:text-white disabled:opacity-60"
+          onClick={() => {
+            showLoginPopup();
+          }}
+        >
+          Login
+        </button>
+      </div>
+    );
+  }
+
   return (
     <CourseLayout {...courseLayoutProps}>
       <ResizablePanelGroup direction="horizontal">
@@ -49,10 +91,10 @@ export function CourseView(props: CourseViewProps) {
             <div className="relative h-full">
               <div className="absolute inset-0 overflow-y-auto [scrollbar-color:#3f3f46_#27272a;]">
                 <div className="mx-auto max-w-xl p-4">
-                  <h3 className="text-4xl font-semibold mt-10">
+                  <h3 className="mt-10 text-4xl font-semibold">
                     {lesson.frontmatter.title}
                   </h3>
-                  <div className="course-content prose prose-pre:text-lg prose-pre:rounded-2xl prose-lg mt-8 text-black prose-headings:mb-3 prose-headings:mt-8 prose-li:my-1 prose-thead:border-zinc-800 prose-tr:border-zinc-800">
+                  <div className="course-content prose prose-lg mt-8 text-black prose-headings:mb-3 prose-headings:mt-8 prose-pre:rounded-2xl prose-pre:text-lg prose-li:my-1 prose-thead:border-zinc-800 prose-tr:border-zinc-800">
                     {children}
                   </div>
                 </div>