reate a modern, minimalistic blue heart logo on t...

Create a modern, minimalistic blue heart logo on two backgrounds: pure white and pure black. The heart should have smooth, rounded edges and a subtle gradient from deep royal blue (#1E3A8A) at the top to bright sky blue (#60A5FA) at the bottom. The design must be symmetrical with gentle inner curves for a friendly and clean look. The style should be flat with a slight depth effect but no heavy shadows or textures, optimized for pixel-perfect clarity at small sizes (64x64 to 512x512 pixels). Th