body { font-family: Arial, sans-serif; margin:0; background:#f8f9fa; }
header { background:#6200ea; color:white; padding:15px; text-align:center; }
header nav a { color:white; margin:0 10px; text-decoration:none; }
main { max-width:600px; margin:20px auto; padding:20px; background:white; border-radius:8px; }
.campo { margin-bottom:15px; }
.campo label { display:block; font-weight:bold; }
input { width:48%; padding:8px; margin:5px 1%; border:1px solid #ccc; border-radius:5px; }
button { background:#6200ea; color:white; padding:10px; border:none; border-radius:5px; cursor:pointer; width:100%; }
button:hover { background:#4500b5; }
.ads { margin:20px auto; text-align:center; background:#ddd; padding:15px; }
#resultado { font-size:1.2em; margin-top:15px; font-weight:bold; text-align:center; }
footer { text-align:center; padding:15px; background:#eee; margin-top:20px; }