*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:#0f172a;color:#e2e8f0}
header{padding:14px 16px;background:#1e293b;display:flex;justify-content:space-between;align-items:center;position:sticky;top:0;z-index:5}
header h1{font-size:17px;margin:0}
.badge{background:#334155;border-radius:999px;padding:5px 11px;font-size:13px}
main{max-width:520px;margin:0 auto;padding:16px}
.card{background:#1e293b;border-radius:14px;padding:16px;margin-bottom:14px}
label{display:block;font-size:13px;color:#94a3b8;margin:8px 0 4px}
input{width:100%;padding:12px;border-radius:10px;border:1px solid #334155;background:#0f172a;color:#fff;font-size:16px}
button{width:100%;padding:13px;border:0;border-radius:10px;font-size:16px;font-weight:600;cursor:pointer;margin-top:10px}
.pri{background:#2563eb;color:#fff}
.sec{background:#334155;color:#fff}
#reader{width:100%;border-radius:12px;overflow:hidden;background:#000}
.row{display:flex;gap:8px}
.row input{flex:1}
.row button{width:auto;margin-top:0;padding:0 20px}
.hint{font-size:13px;color:#94a3b8;margin-top:6px;text-align:center}
#estadoCam{font-size:13px;margin-top:10px;color:#fbbf24}
#overlay{position:fixed;inset:0;display:none;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:24px;z-index:99;color:#fff}
#overlay .ico{font-size:84px}
#overlay .tit{font-size:28px;font-weight:800;margin-top:8px}
#overlay .nom{font-size:23px;margin-top:12px;font-weight:600}
#overlay .det{font-size:16px;margin-top:10px;opacity:.92}
.ok{background:#16a34a}.warn{background:#d97706}.err{background:#dc2626}.info{background:#475569}
.hidden{display:none}