:root { --primary:#0ea5e9; --bg:#0b1220; --card:#111827; --muted:#94a3b8; --text:#e5e7eb; }
*{box-sizing:border-box} body{margin:0;font-family:ui-sans-serif,system-ui,Segoe UI,Roboto;color:var(--text);background:linear-gradient(180deg,#0b1220,#0f172a)}
.app-header,.app-footer{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:#0b1220;position:sticky;top:0;z-index:10;border-bottom:1px solid #1f2937}
.app-footer{position:static;opacity:.8;border-top:1px solid #1f2937;margin-top:24px}
h1{margin:0;font-size:20px} h2{margin:0 0 8px}
.container{max-width:980px;margin:16px auto;padding:0 12px;display:grid;gap:16px}
.card{background:var(--card);border:1px solid #1f2937;border-radius:16px;padding:16px;box-shadow:0 10px 30px rgba(0,0,0,.25)}
.badge{font-size:12px;background:#1f2937;padding:4px 8px;border-radius:999px;margin-left:6px}
.row{display:flex;gap:8px;align-items:center;margin:8px 0;flex-wrap:wrap}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:8px}
label{display:block;font-size:12px;color:var(--muted);margin-bottom:4px}
input{width:100%;padding:10px 12px;border-radius:12px;border:1px solid #334155;background:#0b1220;color:var(--text)}
button{padding:10px 14px;border-radius:12px;border:1px solid transparent;background:var(--primary);color:white;font-weight:600;cursor:pointer}
button.secondary{background:#111827;border-color:#334155}
button:disabled{opacity:.6;cursor:not-allowed}
table{width:100%;border-collapse:collapse}
th,td{border-bottom:1px solid #1f2937;padding:10px;text-align:left;font-size:14px}
.scanner{position:relative;border:1px solid #334155;border-radius:16px;overflow:hidden;background:black}
video{width:100%;height:auto;display:block;opacity:.9}
.hidden{display:none}
.status-online{background:#065f46}
.status-offline{background:#7c2d12}
.status-pending{background:#78350f}
.status-sent{background:#064e3b}
.delete{background:#7f1d1d}
.edit{background:#1d4ed8}
@media (max-width:720px){ .grid2{grid-template-columns:1fr} }