whimsical forest landscape in flat minimalist style, ideal for poster, card , or background

forest landscape minimalist flat illustration whimsical nature greenery hills sky clouds foliage serene lush poster card design background soft blue trees plants leaves flora scenic tranquil peaceful artistic decorative graphic print stylish modern clean calming environment natural green outdoor wilderness picturesque beautiful simplicity contemporary creative aesthetic gentle countryside horizon scene art artwork visual fresh painting vegetation imaginative versatile ai generated