Create a playful and colorful text logo for "MAFI" using a cartoonish, bubbly font. Each letter should be filled with vibrant colors, incorporating patterns like stripes and polka dots to give it a fun, youthful energy. The background should be a whimsical landscape with rolling hills and cartoon clouds in pastel colors, enhancing the cheerful theme. Use bright, even lighting to keep the colors vivid and lively, ensuring that the logo stands out as a focal point in this joyful setting.