import unicodedata

def normalize(text: str) -> str:
    return unicodedata.normalize("NFD", str(text).lower()).encode("ascii", "ignore").decode("ascii")

def weather_categorize(code: int) -> str:
    if code == 0:            return "Ciel dégagé"
    elif code in [1, 2]:     return "Nuageux"
    elif code == 3:          return "Couvert"
    elif code in [51,53,55]: return "Bruine"
    else:                    return "Pluie"

def pm25_to_level(val: float) -> dict:
    if val <= 15:
        return {"label": "Sain 🟢", "color": "#4CAF50", "advice": "Qualité de l'air excellente. Activités normales."}
    elif val <= 25:
        return {"label": "Modéré 🟡", "color": "#FFB300", "advice": "Qualité acceptable. Prudence pour les personnes sensibles."}
    elif val <= 35:
        return {"label": "Mauvais 🟠", "color": "#FF9800", "advice": "Effets possibles sur la santé. Réduire les efforts intenses."}
    else:
        return {"label": "Dangereux 🔴", "color": "#F44336", "advice": "Port du masque recommandé, limiter les sorties."}