.button-ai { background-color: transparent; color: #000; border: 2px solid #000; padding: 8px 16px; font-size: 14px; text-align: center; text-decoration: none; display: inline-block; transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease; }
.button-ai:hover { background-color: #000; color: #fff; }
.button-ai:active { background-color: #000; color: #fff; border-color: #fff; }
.button-ai:focus { outline: none; box-shadow: 0 0 4px #000; }