Midnight Celestial Void with Luminous Horizon Halo at Base

Full prompt

Cosmic visual art composition presented in an expansive 16:9 aspect ratio, crafted as a minimal dark desktop wallpaper. The broad upper two-thirds of the canvas is bathed in pure, velvety obsidian darkness, offering a pristine, distraction-free environment for computer icons and desktop windows. Stretching continuously along the lower horizontal horizon is a razor-thin, luminous planetary arc glowing softly in ethereal shades of lunar silver, electric cyan, and deep spectral violet. A delicate, sparse scattering of microscopic pinpoint stars glimmers faintly near the bottom edge, grounding the subtle curvature in deep space without cluttering the screen. The smooth digital rendering maintains perfect gradient transitions, deep contrast, and a quiet, meditative atmosphere.