def fitz_pdf_to_line_df(file_path):
    doc = fitz.open(file_path)
    data = []
    for page_num in range(len(doc)):
        page = doc[page_num]
        blocks = page.get_text("dict").get("blocks", [])
        line_num = 0
        for block in blocks:
            if block.get("type") != 0:
                continue
            for line in block.get("lines", []):
                spans = line.get("spans", [])
                if not spans: continue
                text = "".join(s["text"] for s in spans)
                rect = fitz.Rect(spans[0]["bbox"])
                for span in spans[1:]:
                    rect |= fitz.Rect(span["bbox"])
                data.append({
                    "page_num": page_num + 1,
                    "line_num": line_num + 1,
                    "text": text,
                    "x0": float(rect.x0), "y0": float(rect.y0),
                    "x1": float(rect.x1), "y1": float(rect.y1),
                })
                line_num += 1
    return pd.DataFrame(data)