:root {
  --bg: #0f1419;
  --panel: #161c24;
  --panel-2: #1c242e;
  --border: #2a3542;
  --text: #dbe4ee;
  --muted: #8a99ab;
  --accent: #55e6d3;
  --accent-2: #79b7ff;
  --danger: #ff6b6b;
  --warn: #f3b45e;
  --ok: #5fd48e;
  --radius: 10px;
  --shadow: 0 4px 18px rgba(0, 0, 0, .35);
}

[hidden] { display: none !important; }

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
}

a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 980px; margin: 0 auto; padding: 16px; }

header.top {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  position: sticky;
  top: 0;
  z-index: 20;
}
header.top h1 { font-size: 18px; margin: 0; font-weight: 700; }
header.top h1 span { color: var(--accent); }
header.top .spacer { flex: 1; }
header.top nav { display: flex; gap: 8px; flex-wrap: wrap; }
header.top nav a {
  padding: 7px 12px;
  border-radius: 8px;
  color: var(--text);
  border: 1px solid var(--border);
  background: var(--panel-2);
  font-size: 13px;
}
header.top nav a.active { border-color: var(--accent); color: var(--accent); }
header.top nav a:hover { text-decoration: none; border-color: var(--accent-2); }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}
.card h2 { margin: 0 0 12px; font-size: 15px; color: var(--accent-2); text-transform: uppercase; letter-spacing: .08em; }
.card h3 { margin: 14px 0 8px; font-size: 14px; }

button {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 14px;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
button:hover { border-color: var(--accent-2); }
button:disabled { opacity: .5; cursor: not-allowed; }
button.primary { background: var(--accent); color: #06201c; border-color: var(--accent); font-weight: 600; }
button.primary:hover { filter: brightness(1.08); }
button.danger { border-color: var(--danger); color: var(--danger); }
button.big { padding: 14px 22px; font-size: 16px; border-radius: 12px; }
button.wide { width: 100%; }

input, select, textarea {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 14px;
  font-family: inherit;
  width: 100%;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent-2); }
label { display: block; font-size: 12px; color: var(--muted); margin: 10px 0 4px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; }
.row > * { flex: 1; min-width: 140px; }
.row .grow-2 { flex: 2; }

table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { text-align: left; padding: 9px 8px; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .05em; }
tr:hover td { background: rgba(255, 255, 255, .02); }

.badge { display: inline-block; padding: 3px 9px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.badge.blocked { background: rgba(255, 107, 107, .15); color: var(--danger); }
.badge.clear { background: rgba(95, 212, 142, .15); color: var(--ok); }
.badge.unlocked { background: rgba(121, 183, 255, .15); color: var(--accent-2); }
.badge.off { background: rgba(138, 153, 171, .15); color: var(--muted); }
.badge.locked { background: rgba(243, 180, 94, .15); color: var(--warn); }

.notice { border-radius: 8px; padding: 12px 14px; margin: 12px 0; font-size: 13.5px; }
.notice.warn { background: rgba(243, 180, 94, .12); border: 1px solid rgba(243, 180, 94, .35); color: var(--warn); }
.notice.info { background: rgba(121, 183, 255, .12); border: 1px solid rgba(121, 183, 255, .35); color: var(--accent-2); }
.notice.ok { background: rgba(95, 212, 142, .12); border: 1px solid rgba(95, 212, 142, .35); color: var(--ok); }
.notice.err { background: rgba(255, 107, 107, .12); border: 1px solid rgba(255, 107, 107, .35); color: var(--danger); }

.empty { color: var(--muted); text-align: center; padding: 30px 10px; }

.qr-box { text-align: center; padding: 10px; }
.qr-box img { width: 200px; height: 200px; image-rendering: pixelated; background: #fff; border-radius: 8px; }
.qr-box .cap { font-size: 12px; color: var(--muted); margin-top: 6px; word-break: break-all; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }

.overlay {
  position: fixed; inset: 0;
  background: rgba(8, 10, 14, .92);
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
}
.overlay .box { width: min(380px, 92vw); }

.big-status { text-align: center; padding: 28px 10px; }
.big-status .state { font-size: 26px; font-weight: 800; margin: 8px 0; }
.big-status .sub { color: var(--muted); margin-bottom: 18px; }
.big-status .countdown { font-size: 30px; font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; }

video { width: 100%; border-radius: 12px; background: #000; }
.scan-frame {
  position: absolute; left: 50%; top: 50%;
  width: 62%; max-width: 300px; aspect-ratio: 1;
  transform: translate(-50%, -50%);
  border: 3px solid var(--accent);
  border-radius: 14px;
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, .35);
  transition: border-color .2s;
}
.scan-frame.hit { border-color: var(--ok); }
.scan-wrap { position: relative; }

.muted { color: var(--muted); }
.small { font-size: 12px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }

#discoverList { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }
.discover-item {
  display: block;
  width: 100%;
  text-align: left;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  cursor: pointer;
  color: var(--text);
}
.discover-item:hover { border-color: var(--accent-2); }
.discover-item.selected { border-color: var(--accent); background: rgba(85, 230, 211, .07); }
.discover-item .di-name { font-weight: 600; font-size: 14px; }
.discover-item .di-name .di-mac { color: var(--accent-2); font-weight: 400; margin-left: 8px; }
.discover-item .di-meta { color: var(--muted); font-size: 12px; margin-top: 3px; }
.discover-item.offline { opacity: .55; cursor: not-allowed; }
.discover-item.offline:hover { border-color: var(--border); }

@media print {
  header.top, nav, .no-print { display: none !important; }
  body { background: #fff; color: #000; }
  .card { box-shadow: none; border: 1px solid #ccc; }
}