body{font-family:Arial;background:#0f172a;color:white;margin:0}
.container{max-width:900px;margin:auto;padding:20px}
input,textarea{width:100%;padding:10px;margin:10px 0}
button{padding:10px;background:#38bdf8;border:none;color:white}
.card{background:#1e293b;padding:15px;margin:10px 0}
@media(max-width:768px){.container{padding:10px}}