Update app.py

app.py

@@ -7,14 +7,16 @@ from PyPDF2 import PdfReader
 summarizer = pipeline("summarization", model="facebook/bart-large-cnn")
 qa_pipeline = pipeline("question-answering", model="distilbert-base-cased-distilled-squad")
 
-# Store PDF text globally (for demonstration)
+# Global variable to store PDF text
 pdf_text_store = ""
 
 def extract_text_from_pdf(pdf_file):
     reader = PdfReader(pdf_file)
     text = ""
     for page in reader.pages:
-        text += page.extract_text() + "\n"
+        page_text = page.extract_text()
+        if page_text:
+            text += page_text + "\n"
     return text
 
 def upload_pdf(file, history):
@@ -77,6 +79,7 @@ with gr.Blocks(theme=gr.themes.Soft(primary_hue="purple", secondary_hue="blue"))
                 padding: 1em;
                 border-radius: 0.75em;
                 box-shadow: 0 2px 10px rgba(0,0,0,0.1);
+                margin-bottom: 1em;
             }
             .chat-area {
                 background: white;
@@ -92,7 +95,7 @@ with gr.Blocks(theme=gr.themes.Soft(primary_hue="purple", secondary_hue="blue"))
 
     with gr.Row():
         with gr.Column(scale=1, min_width=250):
-            with gr.Box(elem_classes="upload-box"):
+            with gr.Group(elem_classes="upload-box"):
                 gr.Markdown("### 📂 Upload Your PDF")
                 pdf_upload = gr.File(label="Upload PDF", file_types=[".pdf"])
                 upload_btn = gr.Button("🚀 Process PDF", elem_classes="custom-btn")
@@ -103,7 +106,6 @@ with gr.Blocks(theme=gr.themes.Soft(primary_hue="purple", secondary_hue="blue"))
                 show_copy_button=True,
                 elem_classes="chat-area"
             )
-
             user_input = gr.Textbox(
                 placeholder="Ask something about your PDF...",
                 show_label=False