Rewrite theme section: use only supported Gradio parameters

- Removed all unsupported theme parameters (button_text_color, body_text_color, etc.)
- Kept only core supported parameters: body_background_fill, block_background_fill, border_color_primary
- Simplified theme to avoid TypeError with unsupported parameters
- Maintains visual design with light blue background and black blocks

pdf_comparator.py

@@ -665,7 +665,7 @@ def find_misspell_boxes_from_text(
                                 y1 = int(bbox[1] * scale_y) + (page_num * img_height)
                                 x2 = int(bbox[2] * scale_x)
                                 y2 = int(bbox[3] * scale_y) + (page_num * img_height)
-                            else:
+                else:
                                 # Use PDF coordinates directly (fallback)
                                 x1 = int(bbox[0])
                                 y1 = int(bbox[1]) + (page_num * 1000)
@@ -1113,6 +1113,7 @@ def compare_pdfs(file_a, file_b):
 # -------------------- Gradio App -------------------
 def create_demo():
     # Create custom theme with light blue background
+    # Create a simple, working theme with supported parameters only
     custom_theme = gr.themes.Soft(
         primary_hue="blue",
         neutral_hue="blue",
@@ -1124,14 +1125,6 @@ def create_demo():
         block_background_fill_dark="#000000",
         border_color_primary="#333333",  # Dark borders
         border_color_primary_dark="#333333",
-        body_text_color="#000000",  # Black text
-        body_text_color_dark="#000000",
-        block_label_text_color="#000000",  # Black text for labels
-        block_label_text_color_dark="#000000",
-        block_title_text_color="#000000",  # Black text for titles
-        block_title_text_color_dark="#000000",
-        button_text_color="#FFFFFF",  # White text on buttons for contrast
-        button_text_color_dark="#FFFFFF",
     )
     
     with gr.Blocks(title="PDF Comparison Tool", theme=custom_theme) as demo:
@@ -1276,7 +1269,7 @@ def debug_scan_pdf(pdf_path: str, outdir: str = "barcode_debug", max_pages=2):
                     rr = _decode_once(pil) or _decode_once(_binarize(pil))
                     if rr:
                         print(f"  Embedded image {ix+1}: {[(r.type, r.data) for r in rr]}")
-                except Exception as e:
+        except Exception as e:
                     print("  Embedded image error:", e)
     
     doc.close()