# requirements.txt
streamlit              # Latest stable version (as of Dec 2025)
openai               # Latest OpenAI client (supports gpt-4o, embeddings-3, etc.)
pdfplumber             # Best PDF text extraction
PyPDF2             # Fallback PDF reader
python-dotenv           # Loads .env file for local dev
pandas                # For MCQ CSV export
numpy                # For cosine similarity
scikit-learn             # cosine_similarity function