diff --git a/components/QuestionEditModal.tsx b/components/QuestionEditModal.tsx
index 6f22183..653fbba 100644
--- a/components/QuestionEditModal.tsx
+++ b/components/QuestionEditModal.tsx
@@ -2,6 +2,7 @@ import React, { useState } from 'react';
 import { motion } from 'framer-motion';
 import { X, Plus, Trash2, Triangle, Diamond, Circle, Square, Clock } from 'lucide-react';
 import { Question, AnswerOption } from '../types';
+import { useBodyScrollLock } from '../hooks/useBodyScrollLock';
 
 interface QuestionEditModalProps {
   question: Question;
@@ -39,6 +40,8 @@ export const QuestionEditModal: React.FC<QuestionEditModalProps> = ({
   const [options, setOptions] = useState<AnswerOption[]>(question.options);
   const [timeLimit, setTimeLimit] = useState(question.timeLimit);
 
+  useBodyScrollLock(true);
+
   const handleOptionTextChange = (index: number, newText: string) => {
     setOptions(prev => prev.map((opt, i) => 
       i === index ? { ...opt, text: newText } : opt
diff --git a/components/QuizEditor.tsx b/components/QuizEditor.tsx
index 65b9a5a..a5507d0 100644
--- a/components/QuizEditor.tsx
+++ b/components/QuizEditor.tsx
@@ -6,6 +6,7 @@ import { arrayMove, SortableContext, sortableKeyboardCoordinates, verticalListSo
 import { Quiz, Question } from '../types';
 import { SortableQuestionCard } from './SortableQuestionCard';
 import { QuestionEditModal } from './QuestionEditModal';
+import { useBodyScrollLock } from '../hooks/useBodyScrollLock';
 import { v4 as uuidv4 } from 'uuid';
 
 interface QuizEditorProps {
@@ -31,6 +32,8 @@ export const QuizEditor: React.FC<QuizEditorProps> = ({
   const [showDeleteConfirm, setShowDeleteConfirm] = useState<string | null>(null);
   const [titleEditing, setTitleEditing] = useState(false);
 
+  useBodyScrollLock(!!showDeleteConfirm);
+
   const sensors = useSensors(
     useSensor(PointerSensor, {
       activationConstraint: { distance: 8 }
diff --git a/components/QuizLibrary.tsx b/components/QuizLibrary.tsx
index ba2ce3c..bd25caa 100644
--- a/components/QuizLibrary.tsx
+++ b/components/QuizLibrary.tsx
@@ -2,6 +2,7 @@ import React, { useState } from 'react';
 import { motion, AnimatePresence } from 'framer-motion';
 import { X, Trash2, Play, BrainCircuit, PenTool, Loader2, Calendar } from 'lucide-react';
 import { QuizListItem } from '../types';
+import { useBodyScrollLock } from '../hooks/useBodyScrollLock';
 
 interface QuizLibraryProps {
   isOpen: boolean;
@@ -31,6 +32,8 @@ export const QuizLibrary: React.FC<QuizLibraryProps> = ({
   const [confirmDeleteId, setConfirmDeleteId] = useState<string | null>(null);
   const isAnyOperationInProgress = loading || !!loadingQuizId || !!deletingQuizId;
 
+  useBodyScrollLock(isOpen);
+
   const handleDeleteClick = (e: React.MouseEvent, id: string) => {
     e.stopPropagation();
     setConfirmDeleteId(id);
diff --git a/components/SaveOptionsModal.tsx b/components/SaveOptionsModal.tsx
index 8c99061..580c5d6 100644
--- a/components/SaveOptionsModal.tsx
+++ b/components/SaveOptionsModal.tsx
@@ -1,6 +1,7 @@
 import React from 'react';
 import { motion } from 'framer-motion';
 import { Save, Copy, X } from 'lucide-react';
+import { useBodyScrollLock } from '../hooks/useBodyScrollLock';
 
 interface SaveOptionsModalProps {
   isOpen: boolean;
@@ -17,6 +18,8 @@ export const SaveOptionsModal: React.FC<SaveOptionsModalProps> = ({
   onOverwrite,
   isSaving
 }) => {
+  useBodyScrollLock(isOpen);
+
   if (!isOpen) return null;
 
   return (
diff --git a/components/SaveQuizPrompt.tsx b/components/SaveQuizPrompt.tsx
index 5cc8b86..55b607a 100644
--- a/components/SaveQuizPrompt.tsx
+++ b/components/SaveQuizPrompt.tsx
@@ -1,6 +1,7 @@
 import React, { useState } from 'react';
 import { motion, AnimatePresence } from 'framer-motion';
 import { Save, X, Loader2, BrainCircuit } from 'lucide-react';
+import { useBodyScrollLock } from '../hooks/useBodyScrollLock';
 
 interface SaveQuizPromptProps {
   isOpen: boolean;
@@ -17,6 +18,8 @@ export const SaveQuizPrompt: React.FC<SaveQuizPromptProps> = ({
 }) => {
   const [isSaving, setIsSaving] = useState(false);
 
+  useBodyScrollLock(isOpen);
+
   const handleSave = async () => {
     setIsSaving(true);
     try {
diff --git a/hooks/useBodyScrollLock.ts b/hooks/useBodyScrollLock.ts
new file mode 100644
index 0000000..497d820
--- /dev/null
+++ b/hooks/useBodyScrollLock.ts
@@ -0,0 +1,12 @@
+import { useEffect } from 'react';
+
+export const useBodyScrollLock = (isLocked: boolean) => {
+  useEffect(() => {
+    if (isLocked) {
+      document.body.style.overflow = 'hidden';
+    }
+    return () => {
+      document.body.style.overflow = '';
+    };
+  }, [isLocked]);
+};