The dark
has an edge.

The scene carries two real light sources, not a color grade layered on afterward: a small, hard, warm area light standing in for a single garage bulb, and a colder, harder light behind the bike acting as a rim, separating the tank and tail from the near-black sky the way edge lighting always has for dark subjects.

The ground is a real reflective surface too, with its own roughness variation, so the pool of light under the bike is a genuine Cycles reflection of those two lights, the same way wet asphalt would double a real streetlamp, not a reflection painted into the floor texture.