:root{font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;line-height:1.4}
body{margin:0;min-height:100vh;display:flex;align-items:center;justify-content:center;background:#0f172a;color:#0b1220}
body.has-bg{background-size:cover;background-position:center}
.card{width:min(920px,94vw);background:#fff;border-radius:16px;padding:22px 20px;box-shadow:0 20px 60px rgba(0,0,0,.35)}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.logo{display:flex;align-items:center;gap:10px}
.logo img{height:34px}
.nav a{margin-left:12px;color:#0b1220;text-decoration:none}
.nav a:hover{text-decoration:underline}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
@media (max-width:740px){.grid{grid-template-columns:1fr}}
label{display:block;font-size:.85rem;color:#334155;margin-bottom:4px}
input,select,textarea{width:100%;padding:10px 10px;border:1px solid #cbd5e1;border-radius:10px;font-size:1rem}
button{padding:10px 12px;border:1px solid #cbd5e1;border-radius:10px;background:#f8fafc;cursor:pointer}
button.primary{background:#2563eb;color:#fff;border-color:#2563eb}
button.primary:disabled{opacity:.55;cursor:not-allowed}
.drop{border:2px dashed #94a3b8;border-radius:14px;padding:18px;text-align:center;background:#f8fafc}
.drop.hover{background:#eef2ff;border-color:#6366f1}
ul{padding-left:18px}
.result{margin-top:18px;padding:14px;border:1px solid #e2e8f0;border-radius:14px;background:#f8fafc}
.hidden{display:none}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:10px}
.hint{color:#475569;font-size:.95rem}
.hint.small{font-size:.85rem}
.err{background:#fee2e2;border:1px solid #fecaca;color:#991b1b;padding:10px;border-radius:10px;margin:10px 0}
.table{width:100%;border-collapse:collapse}
.table th,.table td{border-bottom:1px solid #e2e8f0;text-align:left;padding:8px;vertical-align:top}
.table th{background:#f1f5f9}
.badge{display:inline-block;padding:2px 8px;border-radius:999px;background:#e2e8f0;font-size:.8rem}