Update app.py

app.py

@@ -35,11 +35,10 @@ def main_app():
                 nickname_input.change(fn=handle_nickname, inputs=[nickname_input], outputs=[nickname_display])
 
                 gr.Markdown("---")
-                btn_spoken = gr.Button("🔡 Spoken Communication")
-                btn_written = gr.Button("✍️ Written Communication")
-                gr.Markdown("### 📄 File-Based Learning")
-                btn_file_study = gr.Button("\u2003📘 Study Guides")
-                btn_file_view = gr.Button("\u2003📁 Files")
+                btn_spoken = gr.Button("🗣 Spoken Communication", elem_classes=["sidebar-btn"])
+                btn_written = gr.Button("✍️ Written Communication", elem_classes=["sidebar-btn"])
+                btn_file_study = gr.Button("📘 Study Guides", elem_classes=["sidebar-btn"])
+                btn_file_view = gr.Button("📁 Chat with Files", elem_classes=["sidebar-btn"])
                 gr.Markdown("---")
 
             # === Main View Panels ===