:root {
  --bg: #f4f6f9;
  --panel: #ffffff;
  --border: #e2e7ee;
  --text: #1c2430;
  --muted: #7a8797;
  --primary: #2563eb;
  --primary-soft: #e8f0ff;
  --ok: #16a34a;
  --warn: #d97706;
  --danger: #dc2626;
  --shadow: 0 1px 2px rgba(20, 34, 55, .04), 0 6px 20px rgba(20, 34, 55, .05);
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}
h1, h2 { margin: 0; font-weight: 600; }
h2 { font-size: 15px; }
h2 small { font-size: 11px; color: var(--muted); font-weight: 400; margin-left: 8px; }
button, input, select { font-family: inherit; }

.top {
  height: 60px; padding: 0 24px; display: flex; align-items: center; justify-content: space-between;
  background: var(--panel); border-bottom: 1px solid var(--border); gap: 16px;
}
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand h1 { font-size: 19px; letter-spacing: .5px; }
.brand small { font-size: 12px; color: var(--muted); font-weight: 400; margin-left: 4px; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 0 4px var(--primary-soft); }
.top-meta { display: flex; align-items: center; gap: 9px; flex-wrap: wrap; justify-content: flex-end; }
.chip { font-size: 12px; color: var(--muted); background: #f1f3f6; padding: 4px 10px; border-radius: 6px; font-variant-numeric: tabular-nums; }
.chip-warn { background: #fff3e0; color: var(--warn); }
.pill { font-size: 12px; padding: 4px 11px; border-radius: 20px; font-weight: 500; }
.pill-on { background: #e7f7ed; color: var(--ok); }
.pill-off { background: #f1f3f6; color: var(--muted); }
.pill-err { background: #fdecec; color: var(--danger); }

main { max-width: 1500px; margin: 0 auto; padding: 18px 24px 40px; }
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; box-shadow: var(--shadow); }
.panel-head { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; border-bottom: 1px solid var(--border); }
.badge { display: inline-block; margin-left: 6px; padding: 1px 8px; border-radius: 10px; background: var(--primary-soft); color: var(--primary); font-size: 12px; }
.tag { font-size: 12px; color: var(--muted); background: #f1f3f6; padding: 4px 10px; border-radius: 6px; }
.tag.active { background: #e7f7ed; color: var(--ok); }

.setup { padding: 13px 16px; margin-bottom: 16px; }
.form-row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.form-row label { font-size: 13px; color: var(--muted); min-width: 68px; }
input[type=password], input[type=text], select {
  flex: 1; min-width: 180px; height: 34px; padding: 0 11px; border: 1px solid var(--border);
  border-radius: 7px; background: #fbfcfe; color: var(--text); outline: none; font-size: 13px;
}
input:focus, select:focus { border-color: var(--primary); background: #fff; }
.hint { margin: 9px 0 0; font-size: 12px; color: var(--muted); }

.btn {
  height: 34px; padding: 0 14px; border: 1px solid transparent; border-radius: 7px;
  font-size: 13px; font-weight: 500; cursor: pointer; transition: .15s; white-space: nowrap;
}
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: #1d4fd8; }
.btn-ghost { background: #fff; border-color: var(--border); color: var(--muted); }
.btn-ghost:hover:not(:disabled) { color: var(--text); border-color: #c9d2df; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover:not(:disabled) { background: #b91c1c; }
.btn-sm { height: 27px; padding: 0 10px; font-size: 12px; }

.layout { display: grid; grid-template-columns: 310px 1fr; gap: 16px; align-items: start; }
.devices-panel { display: flex; flex-direction: column; }
.filters { padding: 10px 12px; border-bottom: 1px solid var(--border); }
.filters input { width: 100%; min-width: 0; }
.filter-row { display: flex; gap: 8px; align-items: center; margin-top: 8px; }
.filter-row select { min-width: 0; flex: 1; }
.cb { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; color: var(--muted); white-space: nowrap; }
.cb input { width: 14px; height: 14px; margin: 0; }
.device-list { padding: 9px 10px; height: 480px; overflow-y: auto; }
.device-card {
  padding: 9px 11px; border: 1px solid var(--border); border-radius: 8px; margin-bottom: 7px;
  display: flex; justify-content: space-between; align-items: center; gap: 8px;
}
.device-card:last-child { margin-bottom: 0; }
.dc-main { min-width: 0; }
.device-card .name { font-weight: 600; font-size: 12.5px; word-break: break-all; }
.device-card .meta { font-size: 11px; color: var(--muted); margin-top: 2px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 185px; }
.state { display: inline-flex; align-items: center; gap: 5px; font-size: 11px; margin-top: 3px; }
.state i { width: 7px; height: 7px; border-radius: 50%; background: var(--muted); display: inline-block; }
.state.online i { background: var(--ok); }
.state.online { color: var(--ok); }
.state.busy { color: var(--warn); }
.state.busy i { background: var(--warn); }
.empty { text-align: center; color: var(--muted); padding: 50px 10px; font-size: 13px; }
.pager { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 9px 12px; border-top: 1px solid var(--border); font-size: 12px; color: var(--muted); }

.grid { display: grid; gap: 10px; padding: 12px; min-height: 300px; }
.grid-1 { grid-template-columns: 1fr; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.slot { border: 1px solid var(--border); border-radius: 8px; overflow: hidden; background: #fff; display: flex; flex-direction: column; }
.slot-head { display: flex; align-items: center; gap: 8px; padding: 7px 10px; border-bottom: 1px solid var(--border); }
.slot-name { font-size: 12.5px; font-weight: 600; flex: 1; word-break: break-all; }
.slot-state { font-size: 11px; color: var(--muted); }
.slot-state.ok { color: var(--ok); }
.slot-state.err { color: var(--danger); }
.video-wrap { position: relative; background: #11161f; aspect-ratio: 16 / 10; display: flex; align-items: center; justify-content: center; }
.video-wrap video { width: 100%; height: 100%; object-fit: contain; display: none; background: #11161f; }
.video-wrap video.show { display: block; }
.video-placeholder { position: absolute; color: #7d8899; font-size: 12px; pointer-events: none; }
.slot-bar { display: flex; align-items: center; gap: 9px; padding: 7px 10px; }
.btn-rec { height: 28px; padding: 0 11px; font-size: 12px; border: 1px solid var(--border); background: #fff; color: var(--danger); border-radius: 6px; cursor: pointer; }
.btn-rec:hover { background: #fff5f5; }
.btn-rec-on { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-rec-on:hover { background: #b91c1c; }
.rec-time { font-size: 11px; color: var(--danger); font-variant-numeric: tabular-nums; }
.slot-cost { font-size: 11px; color: var(--muted); margin-left: auto; font-variant-numeric: tabular-nums; }

.preview-bar { display: flex; align-items: center; gap: 24px; padding: 11px 16px; border-top: 1px solid var(--border); }
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat span { font-size: 11px; color: var(--muted); }
.stat b { font-size: 13px; font-weight: 600; font-variant-numeric: tabular-nums; }
.preview-bar .btn-danger { margin-left: auto; }

.log-panel { margin-top: 16px; }
.log { padding: 10px 16px; max-height: 160px; overflow-y: auto; font: 12px/1.8 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.log div { color: #4b5768; }
.log .t { color: #a4aebc; margin-right: 8px; }
.log .ok { color: var(--ok); }
.log .warn { color: var(--warn); }
.log .err { color: var(--danger); }

@media (max-width: 1050px) {
  .layout { grid-template-columns: 1fr; }
  .device-list { height: 260px; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  main { padding: 14px; }
  .top { padding: 0 14px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}