"Craft an eye-catching digital illustration featuring a set of four playing cards arranged artfully on a vibrant and colorful background. Infuse a classic poker card style into the design, incorporating elements like an ace card and the iconic spades slick. Ensure each card is meticulously detailed with a high-quality 8K resolution, striking a balance between beautiful design and dark, intense tones. The composition should evoke a sense of elegance and sophistication, suitable for an online casino logo or a card game illustration. Pay special attention to the intricate details of the playing card backs, creating a stunning artwork that stands out as a masterpiece against the colorful backdrop."