Modern Japanese graphic design poster of stylized water ripples, abstract water surface pattern, organic biomorphic shapes, flat design, vector art style. Monochromatic {argument name="color palette" default="blue"} color palette, {argument name="color 1" default="indigo"} and {argument name="color 2" default="azure"} and white, high contrast, clean hard edges, no gradients. Rhythmic flowing composition, screen print texture, minimalist aesthetic, typography elements in Japanese kanji. {argument name="style reference" default="Shinmura Suisan"} style, fresh and cool atmosphere