"Design a Fauvism-style random poster with bold, non-naturalistic colors that radiate energy and emotion. Incorporate abstract shapes and flowing organic patterns in vibrant hues such as cobalt blue, fiery orange, vivid magenta, and lime green. The composition should include expressive brushstrokes, playful geometric elements, and fluid layering to create a dynamic and visually captivating poster. The background features large, sweeping gradients that transition into simplified forms of nature, such as stylized trees or flowers, emphasizing harmony and movement. Add subtle textural details, like painterly strokes or stippling, to give the piece depth and authenticity."