"Transform this portrait into a selfie taken by the person using a smartphone. The person is sitting on an ergonomic office chair at their desk in a modern office environment. The smartphone is visible in their hand, slightly angled as if capturing the shot. The background includes a computer screen, a few office supplies, and shelves with books or plants. The lighting is soft and natural, coming from a nearby window, and the person's expression is friendly and relaxed. The overall scene should feel authentic and casual, like a real selfie taken during a workday.