.button-ai { background-color: white; border: 2px solid black; border-radius: 20px; color: black; padding: 10px 20px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px; transition: all 0.3s ease; }
.button-ai:hover { background-image: radial-gradient(circle, red, white); color: white; border-color: white; }