body{font-family:Arial;background:#0f172a;color:#e2e8f0;}
.container{max-width:700px;margin:60px auto;padding:20px;background:#1e293b;border-radius:12px;}
input,textarea{width:100%;margin-top:10px;padding:10px;background:#0f172a;color:white;border:1px solid #334155;}
button{margin-top:15px;padding:10px;width:100%;background:#22c55e;color:white;border:none;}
.result{margin-top:20px;padding:10px;background:#020617;}