diff --git a/backend/test_xlsx.py b/backend/test_xlsx.py
deleted file mode 100644
index 720c917..0000000
--- a/backend/test_xlsx.py
+++ /dev/null
@@ -1,40 +0,0 @@
-import zipfile
-
-def create_empty_xlsx(filename):
-    with zipfile.ZipFile(filename, 'w') as zf:
-        # [Content_Types].xml
-        zf.writestr('[Content_Types].xml', """<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types">
-  <Default Extension="rels" ContentType="application/vnd.openxmlformats-package.relationships+xml"/>
-  <Default Extension="xml" ContentType="application/xml"/>
-  <Override PartName="/xl/workbook.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.main+xml"/>
-  <Override PartName="/xl/worksheets/sheet1.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml"/>
-</Types>""")
-
-        # _rels/.rels
-        zf.writestr('_rels/.rels', """<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">
-  <Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument" Target="xl/workbook.xml"/>
-</Relationships>""")
-
-        # xl/workbook.xml
-        zf.writestr('xl/workbook.xml', """<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<workbook xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships">
-  <sheets>
-    <sheet name="Sheet1" sheetId="1" r:id="rId1"/>
-  </sheets>
-</workbook>""")
-
-        # xl/_rels/workbook.xml.rels
-        zf.writestr('xl/_rels/workbook.xml.rels', """<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">
-  <Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/worksheet" Target="worksheets/sheet1.xml"/>
-</Relationships>""")
-
-        # xl/worksheets/sheet1.xml
-        zf.writestr('xl/worksheets/sheet1.xml', """<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<worksheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main">
-  <sheetData/>
-</worksheet>""")
-
-create_empty_xlsx('test.xlsx')
diff --git a/frontend/src/components/FileExplorer.tsx b/frontend/src/components/FileExplorer.tsx
index c19ec5a..cc105e8 100644
--- a/frontend/src/components/FileExplorer.tsx
+++ b/frontend/src/components/FileExplorer.tsx
@@ -8,7 +8,7 @@ import {
   MoreVertical, Star, Download, Pencil, Copy, Move,
   FolderPlus, ArrowUp, X, Check, RefreshCw, Info, Link as LinkIcon, Image as ImageIcon, Film as FilmIcon, Home,
   Sun, Moon, Music as MusicIcon, Code as CodeIcon, Archive as ArchiveIcon, CornerDownRight,
-  CheckCircle, AlertCircle, Menu, FileText, Projector, FileSpreadsheet
+  CheckCircle, AlertCircle, Menu, FileText, LayoutTemplate, FileSpreadsheet
 } from 'lucide-react';
 import api from '@/lib/api';
 import { useIsMobile } from '@/hooks/useIsMobile';
@@ -1180,7 +1180,7 @@ export default function FileExplorer({ onLogout }: FileExplorerProps) {
     if (ext === 'pptx' || ext === 'ppt') {
       return (
         <div className={`${large ? 'w-28 h-20 rounded-2xl text-2xl' : 'w-5 h-5 rounded text-[6px] flex-shrink-0 aspect-square'} flex items-center justify-center font-black tracking-tighter shadow-sm text-white bg-[#D24726]`}>
-          <Projector className={large ? "w-10 h-10 text-white" : "w-3 h-3 text-white"} />
+          <LayoutTemplate className={large ? "w-10 h-10 text-white" : "w-3 h-3 text-white"} />
         </div>
       );
     }
@@ -1454,7 +1454,7 @@ export default function FileExplorer({ onLogout }: FileExplorerProps) {
             }}
           >
             <div className="w-7 h-7 rounded-lg flex items-center justify-center" style={{ background: appMode === 'slides' ? 'linear-gradient(135deg, #f59e0b, #d97706)' : 'var(--color-bg-elevated)' }}>
-              <Projector className={`w-4 h-4 ${appMode === 'slides' ? 'text-white' : ''}`} style={{ color: appMode !== 'slides' ? 'var(--color-text-secondary)' : undefined }} />
+              <LayoutTemplate className={`w-4 h-4 ${appMode === 'slides' ? 'text-white' : ''}`} style={{ color: appMode !== 'slides' ? 'var(--color-text-secondary)' : undefined }} />
             </div>
             Slides
           </button>
@@ -1579,7 +1579,7 @@ export default function FileExplorer({ onLogout }: FileExplorerProps) {
                   color: !editingFile ? 'var(--color-accent)' : 'var(--color-text-secondary)',
                 }}
               >
-                <Projector className="w-4.5 h-4.5" />
+                <LayoutTemplate className="w-4.5 h-4.5" />
                 Recent Presentations
               </button>
               {renderPinnedSidebarSection('.pptx')}
diff --git a/frontend/src/components/OfficeHome.tsx b/frontend/src/components/OfficeHome.tsx
index 7f01f33..cf117a4 100644
--- a/frontend/src/components/OfficeHome.tsx
+++ b/frontend/src/components/OfficeHome.tsx
@@ -1,5 +1,5 @@
 import React, { useState, useEffect, useRef } from 'react';
-import { Plus, Pencil, Trash2, Pin, FileText, Projector, FileSpreadsheet } from 'lucide-react';
+import { Plus, Pencil, Trash2, Pin, FileText, LayoutTemplate, FileSpreadsheet } from 'lucide-react';
 import api from '@/lib/api';
 
 interface FileItem {
@@ -33,7 +33,7 @@ function WordIcon({ className }: { className?: string }) {
 function PptIcon({ className }: { className?: string }) {
   return (
     <div className={`flex items-center justify-center text-white bg-[#D24726] rounded-lg ${className || ''}`}>
-      <Projector className="w-[55%] h-[55%]" />
+      <LayoutTemplate className="w-[55%] h-[55%]" />
     </div>
   );
 }