FROM python:3.11-slim

# System deps for matplotlib + fonts for PDF clarity
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    fonts-dejavu \
    libfreetype6 \
    libpng16-16 \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app

COPY requirements.txt /app/requirements.txt
RUN pip install --no-cache-dir -r /app/requirements.txt

COPY . /app

# Hugging Face Spaces expects port 7860
EXPOSE 7860

ENV PYTHONUNBUFFERED=1
ENV GRADIO_SERVER_NAME=0.0.0.0
ENV GRADIO_SERVER_PORT=7860

CMD ["python", "main.py"]