festive winter background with golden snowflakes and gradient bokeh for holiday greetings

background golden snowflakes holiday greetings winter festive gradient bokeh decoration sparkle celebration pastel texture dreamy twinkling elegant seasonal abstract artistry shimmer vibrant light newyear christmas backdrop frosty joy glimmer design ethereal radiant icy glitter ornament magical wonder luminous cheerful cool serene whimsical ornate enchanting celestial glittering peaceful ai generated