Whimsical Windmill in a Concrete Bunker

A bright, playful cartoon-style illustration of a windmill inside a concrete bunker. The windmill has a chunky, friendly look with a smiling face on the tower, bold black outlines, and blades painted red with white tips. The bunker features gray reinforced concrete walls, riveted metal doors, hanging pipes, and scattered crates. Warm yellow emergency lights cast soft, whimsical shadows. A small window shows a sunny blue sky outside, and the floor has dust, chalk doodles, and tiny footprints. Add cartoon motion lines around the spinning blades to suggest breeze, with a light air of humor and imagination. Style: vivid colors, clean lines, slightly exaggerated perspective, kid-friendly, 3D-like shading but flat cartoon surfaces.