"Create a minimalistic icon in calligraphic style centered around the letter 'F.' The icon should have smooth, flowing curves that emphasize elegance and simplicity, with fine, delicate lines. The design should be balanced, symmetrical, and free of unnecessary embellishments, evoking a modern, refined aesthetic. Use a monochromatic color scheme with subtle contrast between thick and thin strokes, reminiscent of traditional calligraphy but with a contemporary, clean touch