Ultra realistic prison cell interior, dirty concrete walls, old steel bunk bed, cold cinematic atmosphere, dim harsh ceiling bulb light, realistic shadows, worn prison textures, slightly grimy floor, subtle darkness in corners, realistic jail environment, documentary-style realism, believable lighting, muted gray and dirty green tones, natural contrast, shallow depth of field, empty prison cell, no people, no violence, no horror style, realistic photography, cinematic composition, premium YouTube thumbnail background, slightly dramatic but believable, movie still quality, highly detailed, authentic prison mood, soft background blur, realistic textures, 16:9