*{box-sizing:border-box}body{margin:0;font-family:system-ui,sans-serif;background:#f1f3f5;color:#222}
nav{display:flex;justify-content:space-between;padding:12px 16px;background:#1d3557;color:#fff}nav a{color:#fff}
main{max-width:480px;margin:0 auto;padding:12px}.card{background:#fff;border-radius:10px;padding:16px;margin:12px auto;max-width:480px;box-shadow:0 1px 3px #0002}
h1,h2{margin:0 0 12px;font-size:1.2rem}label{display:block;margin:10px 0;font-size:.9rem}
input,select,textarea{width:100%;padding:10px;margin-top:4px;border:1px solid #bbb;border-radius:6px;font-size:1rem}
input[readonly]{background:#eee}.chk input{width:auto;margin-right:6px}
button,.btn{display:inline-block;padding:12px 18px;border:0;border-radius:8px;background:#1d3557;color:#fff;font-size:1rem;text-decoration:none;width:100%;margin-top:8px;text-align:center}
button.peq{width:auto;padding:6px 10px;margin:0;background:#a4161a}.fila{display:flex;justify-content:space-between;align-items:center;gap:8px;margin:6px 0}
.err{color:#a4161a}.ok{color:#2a7a3b}.muted{color:#777;font-size:.85rem}
.ticket{background:#fff;font-family:monospace;font-size:15px;padding:16px;width:300px;margin:12px auto;text-align:center;line-height:1.5}
#qr{display:flex;justify-content:center;margin-top:10px}.acciones{max-width:300px;margin:0 auto}
@media print{nav,.acciones{display:none}body{background:#fff}.ticket{margin:0;width:58mm;padding:2mm;font-size:12px}}