Update app.py

app.py

@@ -24,7 +24,7 @@ book_data = {
 def clean_formatting(text):
     text = re.sub(r"\*\*(.*?)\*\*", r"\1", text)
     text = re.sub(r"\*(.*?)\*", r"\1", text)
-    text = re.sub(r"[#•●→✅🔹🔸📘📖📑📤📥⬇️🎉>"]", "", text)
+    text = re.sub(r"[#•●→✅🔹🔸📘📖📑📤📥⬇️🎉>]", "", text)
     text = re.sub(r"\s{2,}", " ", text)
     return text.strip()
 
@@ -159,26 +159,26 @@ def export_book():
 
 # Gradio Interface
 with gr.Blocks() as demo:
-    gr.Markdown("## 📘 AI Textbook Generator – Step-by-Step (APA Style)")
+    gr.Markdown("## \ud83d\udcd8 AI Textbook Generator \u2013 Step-by-Step (APA Style)")
 
     with gr.Row():
         title = gr.Textbox(label="Subject Title")
         grade = gr.Textbox(label="Grade Level")
 
     slos = gr.Textbox(label="Paste SLOs (One per Line)", lines=10)
-    generate_structure = gr.Button("🧠 Generate TOC + Preface")
+    generate_structure = gr.Button("\ud83e\udde0 Generate TOC + Preface")
     structure_output = gr.Textbox(label="Generated Preface and TOC", lines=15)
 
     generate_structure.click(fn=generate_book_intro, inputs=[title, grade, slos], outputs=structure_output)
 
-    gr.Markdown("### 📥 Generate Chapters One by One")
+    gr.Markdown("### \ud83d\udcc5 Generate Chapters One by One")
     chapter_output = gr.Textbox(label="Generated Chapter Content", lines=25)
 
     with gr.Row():
         for i in range(1, 7):
             gr.Button(f"Generate Chapter {i}").click(fn=generate_chapter, inputs=gr.Number(value=i, visible=False), outputs=chapter_output)
 
-    gr.Markdown("### 💾 Download Complete Textbook")
+    gr.Markdown("### \ud83d\udcc2 Download Complete Textbook")
     download_btn = gr.Button("Download MS Word Textbook")
     download_file = gr.File()