Dreamy Blue Bokeh Background

abstract soft-focus background of pale sky blue with glowing white bokeh light circles scattered across the upper half, delicate blurred light particles, airy pastel gradient, dreamy defocused texture, clean minimal composition with no distinct objects, smooth luminous haze, subtle cyan and powder blue tones, bright high-key illumination, gentle sparkling highlights, serene and ethereal atmosphere, shallow depth of field effect, stock-style background