body{margin:0;background:#000;font-family:Arial}canvas{position:fixed;inset:0}.card{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);background:rgba(20,20,20,.6);backdrop-filter:blur(10px);border:1px solid #0ff;border-radius:16px;padding:24px;color:#0ff;width:320px}input,select,button{width:100%;padding:10px;margin:8px 0;border-radius:8px}