Create a highly photorealistic birthday portrait of an 18-year-old boy celebrating his milestone birthday in a youthful, stylish indoor setup. He wears a light-blue denim jacket over a plain white T-shirt, black jeans, clean white sneakers, and a simple wristwatch. Position him standing naturally beside a decorated birthday table, with one hand resting casually on the table and the other relaxed near his pocket. Do not place any gift, present, box, phone, or unnecessary object in his hands. He looks directly into the camera with a genuine, cheerful smile and relaxed youthful confidence. His complete face must be clearly visible, sharply focused, and evenly illuminated with bright soft frontal lighting and gentle fill light, ensuring his eyes and facial features have no harsh shadows. Create a vibrant backdrop featuring blue, white, silver, and transparent balloons, warm fairy lights, hanging streamers, colorful confetti, and a large elegant “18” decoration. Place a round birthday cake on the table with white frosting, blue cream accents, chocolate decorations, berries, and glowing candles. Arrange wrapped gifts separately on the floor near the table. Preserve realistic skin texture, natural facial proportions, detailed hair strands, accurate hands and fingers, realistic denim texture, cake frosting, candle flames, balloon reflections, and confetti. Capture with an 85mm professional portrait lens, shallow depth of field, crisp facial detail, cinematic bokeh, realistic color grading, and premium birthday photography. Ultra-photorealistic 8K, vertical 4:5 composition, no cartoon, no CGI, no plastic skin.