import logging
import sys
import os

def setup_logging() -> None:
    level = os.getenv("LOG_LEVEL", "INFO").upper()
    logging.basicConfig(
        level=getattr(logging, level, logging.INFO),
        format="%(asctime)s [%(levelname)s] %(name)s — %(message)s",
        datefmt="%Y-%m-%dT%H:%M:%S",
        stream=sys.stdout,
        force=True,
    )