FROM python:3.11-slim

WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y \
    gcc \
    g++ \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements first for layer caching
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy application code
COPY . .

# Hugging Face Spaces runs on port 7860
ENV PORT=7860
ENV PYTHONUNBUFFERED=1

EXPOSE 7860

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