medieval stone furnace, glowing embers, blacksmith working, muscular male, leather apron, sweat on forehead, hammer raised, anvil, sparks flying, dark interior, stone walls, firelight casting shadows, rustic atmosphere, ambient warm light, detailed texture of stone, smoke rising, iron tools, metalwork, craftsmanship, close-up on hands, 3/4 view, dynamic action pose, intense focus, historical setting, artisan, high contrast lighting, sturdy build, practical clothing, medieval workshop.