body { background: #0f172a; color: #fff; font-family: Arial; text-align: center; }
.container { max-width: 480px; margin: 50px auto; }
.card { background: #020617; padding: 20px; border-radius: 10px; }
select, button { width: 100%; padding: 10px; margin-top: 8px; border-radius: 6px; border: none; }
button { margin-top: 15px; background: #22c55e; font-weight: bold; cursor: pointer; }
button:hover { background: #16a34a; }
.result { margin-top: 20px; background: #020617; padding: 15px; border-radius: 10px; }
#status { font-weight: bold; }