Athletic woman mirror selfie in dark minimalist bathroom

Young woman with long dark hair taking a mirror selfie in a modern minimalist bathroom, athletic and toned physique with visible abs, wearing a black bra and black panties, holding a smartphone in one hand while looking at the camera with a confident expression, dramatic low-key lighting with strong shadows and highlights, dark moody atmosphere, black heated towel rack visible in the background, realistic skin texture, detailed muscle definition and hair, photorealistic, highly detailed, 8k