Smoking is prohibited in all areas of the establishment serving food or beverages, including shops, restaurants, and cafeterias. This prohibition extends to outdoor areas, except for a designated smoking area meeting the following conditions: The area must be less than 15 square meters, or if larger, it must be contiguous and not exceed 25% of the total outdoor seating area. A separate, internally ventilated area, not exceeding 25% of the public area, may be designated for non-smoking purposes, provided it does not cause a nuisance to other areas.