Ethereal Soft-Focus Gradient Background

abstract soft-focus gradient background, wide cinematic banner composition, blurred atmospheric color fields with smooth transitions, vivid cyan and turquoise glow on the left fading into deep electric blue and saturated violet-magenta across the center and upper right, dark near-black shadowed lower right corner, subtle smoky texture, diffuse luminous haze, no distinct objects, minimal modern digital art, high contrast neon ambience, velvety soft edges, ethereal aurora-like color wash