Colorful and vibrant background with wavy lines, vector illustration style, soft edges, light colors, bright color palette, delicate brushstrokes, watercolor technique, rainbow colors, smooth curves, flowing shapes. The design includes various shades of pastel pink, blue, yellow, green, purple, orange, red, white, and black, creating an abstract pattern that resembles waves or clouds in the sky. It has a dreamy atmosphere and exudes warmth and tranquility, in the style of Claude Monet. --ar 9:16 --v 6.1