diff --git a/.gitignore b/.gitignore
index 7eeb1d2..e2fbe1d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -34,4 +34,7 @@ config.yaml
 past/
 
 # Private interview template content
-frontend/src/util/reactTemplateContent.ts
\ No newline at end of file
+frontend/src/util/reactTemplateContent.ts
+
+tmp/
+CLAUDE.md
\ No newline at end of file
diff --git a/frontend/src/components/home/HomePage.tsx b/frontend/src/components/home/HomePage.tsx
index f3734f1..70d1db0 100644
--- a/frontend/src/components/home/HomePage.tsx
+++ b/frontend/src/components/home/HomePage.tsx
@@ -103,9 +103,9 @@ function HomePage() {
     />
 
     <div className={`min-h-screen ${isDark ? 'bg-slate-900 text-white' : 'bg-gray-100 text-gray-900'}`}>
-      <h1 className='text-4xl font-bold text-center pt-20'>welcome to goderpad</h1>
-      <h3 className='text-xl text-center pt-4'>sce's interview platform</h3>
-      <div className='flex flex-row gap-30 justify-center mt-20'>
+      <h1 className='text-4xl font-bold text-center pt-10 sm:pt-20 px-8'>welcome to goderpad</h1>
+      <h3 className='text-xl text-center pt-4 px-8'>sce's interview platform</h3>
+      <div className='flex flex-row gap-30 justify-center mt-8 sm:mt-20 px-8 sm:px-6'>
         <div className='flex flex-col gap-6 w-full max-w-md mx-auto'>
           <h2 className='text-3xl font-semibold mb-2 text-center'>create an interview room</h2>
 
diff --git a/frontend/src/components/room/CodeEditor.tsx b/frontend/src/components/room/CodeEditor.tsx
index fe77edb..cee3c3d 100644
--- a/frontend/src/components/room/CodeEditor.tsx
+++ b/frontend/src/components/room/CodeEditor.tsx
@@ -79,6 +79,8 @@ function CodeEditor({ code, setCode, ws, roomId, interviewType, users }: CodeEdi
   const [debouncedCode, setDebouncedCode] = useState(code);
   const [leftPercent, setLeftPercent] = useState(50);
   const [isDragging, setIsDragging] = useState(false);
+  const [isMobile, setIsMobile] = useState(false);
+  const [mobilePreviewOpen, setMobilePreviewOpen] = useState(false);
   const isDraggingRef = useRef(false);
   const containerRef = useRef<HTMLDivElement>(null);
   const decorationsRef = useRef<string[]>([]);
@@ -212,6 +214,14 @@ function CodeEditor({ code, setCode, ws, roomId, interviewType, users }: CodeEdi
     setIsDragging(true);
   }, []);
 
+  useEffect(() => {
+    const mql = window.matchMedia('(max-width: 767px)');
+    const update = () => setIsMobile(mql.matches);
+    update();
+    mql.addEventListener('change', update);
+    return () => mql.removeEventListener('change', update);
+  }, []);
+
   useEffect(() => {
     const handleMouseMove = (e: MouseEvent) => {
       if (!isDraggingRef.current || !containerRef.current) return;
@@ -438,7 +448,7 @@ function CodeEditor({ code, setCode, ws, roomId, interviewType, users }: CodeEdi
   const showPreview = interviewType === 'react';
 
   return (
-    <div ref={containerRef} className={`relative flex flex-row ${isDark ? 'bg-slate-900' : 'bg-gray-100'} p-6 pt-20`}>
+    <div ref={containerRef} className={`relative flex ${isMobile ? 'flex-col' : 'flex-row'} ${isDark ? 'bg-slate-900' : 'bg-gray-100'} p-6 pt-20`}>
       {/* Language dropdown — only shown for leetcode interviews */}
       {interviewType === 'leetcode' && <div className='absolute top-6 left-6 z-20'>
         <div className='relative'>
@@ -502,9 +512,9 @@ function CodeEditor({ code, setCode, ws, roomId, interviewType, users }: CodeEdi
         </div>
       </div>}
       {isDragging && <div className='fixed inset-0 z-50 cursor-col-resize' />}
-      <div style={{ width: `${leftPercent}%` }} className={`border-2 ${isDark ? 'border-white' : 'border-gray-900'} rounded-lg overflow-hidden`}>
+      <div style={isMobile ? undefined : { width: `${leftPercent}%` }} className={`${isMobile ? 'w-full' : ''} border-2 ${isDark ? 'border-white' : 'border-gray-900'} rounded-lg overflow-hidden`}>
         <Editor
-          height='85vh'
+          height={isMobile ? 'calc(100vh - 128px)' : '85vh'}
           language={selectedLang.monacoLang}
           value={code}
           theme={isDark ? 'slate-dark' : 'vs'}
@@ -513,19 +523,51 @@ function CodeEditor({ code, setCode, ws, roomId, interviewType, users }: CodeEdi
           onChange={handleEditorChange}
           options={{
             minimap: { enabled: false },
-            fontSize: 14,
+            fontSize: isMobile ? 12 : 14,
             padding: { top: 10 },
             scrollBeyondLastLine: false,
           }}
         />
       </div>
+      {!isMobile && (
+        <div
+          onMouseDown={handleDividerMouseDown}
+          className={`w-3 flex-shrink-0 flex items-center justify-center cursor-col-resize group`}
+        >
+          <div className={`w-0.5 h-full rounded-full transition-colors ${isDark ? 'bg-slate-700 group-hover:bg-slate-400' : 'bg-gray-300 group-hover:bg-gray-500'}`} />
+        </div>
+      )}
       <div
-        onMouseDown={handleDividerMouseDown}
-        className={`w-3 flex-shrink-0 flex items-center justify-center cursor-col-resize group`}
+        style={isMobile ? undefined : { width: `${100 - leftPercent}%` }}
+        className={
+          isMobile
+            ? `fixed left-0 right-0 bottom-0 z-30 h-[70vh] flex flex-col border-t-2 rounded-t-2xl shadow-2xl transition-transform duration-300 ease-out ${isDark ? 'border-white bg-slate-900' : 'border-gray-900 bg-gray-100'} ${mobilePreviewOpen ? 'translate-y-0' : 'translate-y-[calc(100%-44px)]'}`
+            : `border-2 ${isDark ? 'border-white' : 'border-gray-900'} rounded-lg overflow-hidden h-[85vh] relative`
+        }
       >
-        <div className={`w-0.5 h-full rounded-full transition-colors ${isDark ? 'bg-slate-700 group-hover:bg-slate-400' : 'bg-gray-300 group-hover:bg-gray-500'}`} />
-      </div>
-      <div style={{ width: `${100 - leftPercent}%` }} className={`border-2 ${isDark ? 'border-white' : 'border-gray-900'} rounded-lg overflow-hidden h-[85vh] relative`}>
+        {isMobile && (
+          <button
+            onClick={() => setMobilePreviewOpen(prev => !prev)}
+            className={`relative flex items-center justify-center px-4 h-11 flex-shrink-0 rounded-t-2xl cursor-pointer ${isDark ? 'bg-slate-800 text-white border-b border-slate-700' : 'bg-white text-gray-900 border-b border-gray-200'}`}
+          >
+            <span className='text-sm font-medium'>{showPreview ? 'preview' : 'output'}</span>
+            <svg
+              xmlns='http://www.w3.org/2000/svg'
+              width='16'
+              height='16'
+              viewBox='0 0 24 24'
+              fill='none'
+              stroke='currentColor'
+              strokeWidth='2'
+              strokeLinecap='round'
+              strokeLinejoin='round'
+              className={`absolute right-4 transition-transform ${mobilePreviewOpen ? 'rotate-180' : ''}`}
+            >
+              <polyline points='6 9 12 15 18 9' />
+            </svg>
+          </button>
+        )}
+        <div className={isMobile ? 'flex-1 min-h-0 relative overflow-hidden' : 'h-full relative'}>
         {showPreview ? (
           <>
             {hasError && (
@@ -611,6 +653,7 @@ function CodeEditor({ code, setCode, ws, roomId, interviewType, users }: CodeEdi
             </div>
           </div>
         )}
+        </div>
       </div>
     </div>
   );
diff --git a/frontend/src/components/save/PastInterviews.tsx b/frontend/src/components/save/PastInterviews.tsx
index fe88bfb..ab8f48d 100644
--- a/frontend/src/components/save/PastInterviews.tsx
+++ b/frontend/src/components/save/PastInterviews.tsx
@@ -129,7 +129,7 @@ function PastInterviewPage() {
               {files[0].name}
             </p>
           )}
-          <pre className={`whitespace-pre-wrap break-all p-6 rounded-lg shadow-md
+          <pre className={`whitespace-pre overflow-x-auto p-6 rounded-lg shadow-md
             ${isDark ? 'bg-slate-800 text-white' : 'bg-white text-gray-900'}`}>
             {files[selectedFile]?.content}
           </pre>