Elegant Navy Blue and Gold Festive Background

abstract festive background, deep navy blue to near-black gradient backdrop, dense golden glitter and sparkling bokeh lights clustered along the top edge, small warm luminous particles drifting downward, soft out-of-focus circular light orbs, shimmering dust, elegant luxury holiday atmosphere, empty dark center and lower area for copy space, subtle vignette, high contrast, digital art background, glossy metallic gold highlights, soft glow, refined cinematic sparkle texture