body{font-family:Arial,Helvetica,sans-serif;margin:0;padding:0;background:#fafafa}
.container{max-width:1000px;margin:0 auto;padding:16px}
header h1{margin:0}
.muted{color:#666}
.grid{display:grid;grid-template-columns:2fr 1fr;gap:20px}
@media(max-width:800px){.grid{grid-template-columns:1fr}}
.controls input{width:100%;padding:10px;border:1px solid #ddd;border-radius:8px}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px}
.card{background:#fff;border:1px solid #ddd;border-radius:10px;padding:12px;margin-bottom:14px;box-shadow:0 1px 3px rgba(0,0,0,.05)}
.card h3{margin-top:0}
.resumo{list-style:none;padding:0}
.total{display:flex;justify-content:space-between;font-weight:bold;margin-top:10px}
.row{display:flex;gap:8px}
.alert{background:#ffe9b5;color:#7a4d00;padding:8px;border-radius:6px;margin:6px 0}
.hidden{display:none}
#finalizar{width:100%;padding:10px;border:none;background:#111;color:#fff;border-radius:10px;cursor:pointer}
#finalizar:disabled{opacity:.5;cursor:not-allowed}