A modern soldier moves through a devastated urban war zone at night, surrounded by burning vehicles,

A modern soldier moves through a devastated urban war zone at night, surrounded by burning vehicles, shattered buildings, smoke, and distant gunfire. As he takes cover behind a collapsed wall, a strange circular distortion suddenly appears in the middle of the street. The air bends around it, debris begins floating, and a bright blue-white portal opens with violent energy. Through the portal, the soldier sees the same city decades in the future, completely overgrown and abandoned. He slowly steps closer as another figure appears on the other side wearing an advanced combat suit and raises a weapon toward him. Photorealistic live-action cinematic style, realistic military gear, natural human movement, practical war-zone detail, volumetric smoke, dramatic lighting, handheld camera, realistic debris and physics, tense sci-fi atmosphere, 15 seconds.