:root {
  --bg: #0b0f14;
  --panel: #121820;
  --panel-2: #0f141b;
  --line: #1f2a36;
  --txt: #dce6ef;
  --muted: #7d8b9a;
  --accent: #2dd4bf;
  --accent-soft: rgba(45, 212, 191, 0.14);
  --warn: #fbbf24;
  --danger: #f87171;
  --ok: #34d399;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--txt);
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

#app { max-width: 720px; margin: 0 auto; padding: 12px 12px 40px; }

/* 顶栏 */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 4px 14px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--panel); border: 1px solid var(--line);
  display: grid; place-items: center;
}
.rec-dot {
  width: 14px; height: 14px; border-radius: 50%;
  background: #3a4654;
  transition: background 0.3s, box-shadow 0.3s;
}
.rec-dot.on { background: var(--danger); box-shadow: 0 0 10px 2px rgba(248,113,113,0.6); animation: pulse 1.6s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.4} }
h1 { font-size: 17px; margin: 0; }
.sub { font-size: 12px; color: var(--muted); margin: 2px 0 0; }

.status-chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip {
  font-size: 11px; padding: 4px 8px; border-radius: 999px;
  background: var(--panel); border: 1px solid var(--line); color: var(--muted);
  white-space: nowrap;
}
.chip.ok { color: var(--ok); border-color: rgba(52,211,153,0.4); }
.chip.on { color: var(--accent); border-color: rgba(45,212,191,0.5); }
.chip.warn { color: var(--warn); border-color: rgba(251,191,36,0.5); }

/* 摄像头卡片 */
.camera-card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 14px; padding: 10px;
}
.video-wrap {
  position: relative; width: 100%; aspect-ratio: 4/3;
  background: #000; border-radius: 10px; overflow: hidden;
}
#video { width: 100%; height: 100%; object-fit: cover; display: block; }
.video-overlay {
  position: absolute; inset: 0; display: grid; place-items: center;
  background: rgba(0,0,0,0.35); font-size: 14px; color: #cfe0ec;
}
.video-overlay.hidden { display: none; }
.corner { position: absolute; width: 22px; height: 22px; border: 2px solid var(--accent); opacity: 0.8; }
.corner.tl { top: 8px; left: 8px; border-right: none; border-bottom: none; }
.corner.tr { top: 8px; right: 8px; border-left: none; border-bottom: none; }
.corner.bl { bottom: 8px; left: 8px; border-right: none; border-top: none; }
.corner.br { bottom: 8px; right: 8px; border-left: none; border-top: none; }
.video-meta {
  position: absolute; left: 8px; bottom: 8px; font-family: var(--mono);
  font-size: 10px; color: #cfe0ec; background: rgba(0,0,0,0.5);
  padding: 2px 6px; border-radius: 4px;
}

/* 仪表 */
.meters { display: flex; gap: 12px; margin-top: 10px; }
.meter { flex: 1; display: flex; align-items: center; gap: 8px; }
.meter-label { font-size: 12px; color: var(--muted); width: 34px; }
.meter-track { flex: 1; height: 8px; background: var(--panel-2); border-radius: 4px; overflow: hidden; }
.meter-fill { height: 100%; width: 0%; border-radius: 4px; transition: width 0.12s linear; }
.meter-fill.motion { background: linear-gradient(90deg,#22d3ee,#2563eb); }
.meter-fill.sound { background: linear-gradient(90deg,#fbbf24,#f87171); }
.meter-val { font-family: var(--mono); font-size: 11px; width: 40px; text-align: right; color: var(--muted); }

/* 按钮 */
.actions { display: flex; gap: 10px; margin-top: 12px; }
.actions.row { align-items: center; }
.btn {
  flex: 1; padding: 12px; border: none; border-radius: 10px;
  font-size: 15px; font-weight: 600; cursor: pointer; transition: transform 0.05s, opacity 0.2s;
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--accent); color: #06231f; }
.btn-primary.armed { background: var(--danger); color: #fff; }
.btn-ghost { background: var(--panel-2); color: var(--txt); border: 1px solid var(--line); flex: 0 0 auto; padding: 12px 16px; }

/* 面板 */
.panel {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 14px; padding: 14px; margin-top: 14px;
}
.panel h2 { font-size: 13px; color: var(--muted); margin: 0 0 12px; text-transform: uppercase; letter-spacing: 0.5px; }
.count { color: var(--accent); font-weight: 600; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
label { font-size: 13px; color: var(--muted); display: flex; flex-direction: column; gap: 6px; }
input[type=url], input[type=password], input[type=number], select {
  background: var(--panel-2); border: 1px solid var(--line); color: var(--txt);
  border-radius: 8px; padding: 8px 10px; font-size: 14px; width: 100%;
}
input[type=range] { accent-color: var(--accent); }
small { font-family: var(--mono); color: var(--accent); }
.hint { font-size: 12px; color: var(--ok); }

/* 设备行 */
.device-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.dev-item {
  display: flex; align-items: center; gap: 8px; font-size: 13px;
  background: var(--panel-2); border: 1px solid var(--line);
  border-radius: 8px; padding: 10px;
}
.dev-item strong { margin-left: auto; font-family: var(--mono); font-size: 12px; }
.dev-dot { width: 8px; height: 8px; border-radius: 50%; background: #3a4654; }
.dev-dot.ok { background: var(--ok); }
.dev-dot.warn { background: var(--warn); }
.dev-dot.error { background: var(--danger); }

.tips { margin: 12px 0 0; padding: 0; list-style: none; font-size: 12px; color: var(--muted); line-height: 1.7; }
.tips li::before { content: "· "; color: var(--accent); }

/* 事件记录 */
.event-log { display: flex; flex-direction: column; gap: 8px; min-height: 40px; }
.event-item {
  display: flex; gap: 10px; align-items: center;
  background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px; padding: 8px;
}
.event-thumb { width: 64px; height: 48px; object-fit: cover; border-radius: 6px; background: #000; flex: 0 0 auto; }
.event-info { flex: 1; min-width: 0; }
.event-type { font-size: 13px; font-weight: 600; }
.event-type.motion { color: #38bdf8; }
.event-type.sound { color: #fbbf24; }
.event-time { font-size: 11px; color: var(--muted); margin-top: 2px; }
.empty { text-align: center; color: var(--muted); font-size: 13px; padding: 20px 0; }

footer { text-align: center; color: var(--muted); font-size: 11px; padding: 18px 0 6px; line-height: 1.6; }

/* ============ 屏幕切换 ============ */
.screen { max-width: 720px; margin: 0 auto; padding: 12px 12px 40px; }
.hidden { display: none !important; }

/* ============ 角色选择 ============ */
.role-card {
  max-width: 420px; margin: 10vh auto 0; text-align: center;
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 16px; padding: 28px 22px;
}
.role-brand { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.role-brand h1 { font-size: 20px; }
.role-hint { color: var(--muted); margin: 18px 0 16px; font-size: 13px; }
.role-btns { display: flex; flex-direction: column; gap: 12px; }
.role-btn { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 16px; }
.role-title { font-size: 16px; }
.role-desc { font-size: 12px; font-weight: 400; opacity: 0.85; }

/* ============ 监测端配对 ============ */
.pair-card { max-width: 460px; margin: 4vh auto 0; }
.pair-tip { color: var(--muted); font-size: 12px; line-height: 1.7; margin: 0 0 12px; }
.pair-video-wrap {
  position: relative; width: 100%; height: 220px; background: #000;
  border-radius: 10px; overflow: hidden; margin-bottom: 12px;
}
#scanVideo { width: 100%; height: 100%; object-fit: cover; }
.pair-video-overlay {
  position: absolute; inset: 0; display: grid; place-items: center;
  color: #cfe0ec; font-size: 13px; background: rgba(0,0,0,0.4); text-align: center; padding: 12px;
}

/* ============ 控制端看板 ============ */
.brand-ctrl {
  width: 40px; height: 40px; border-radius: 10px; background: var(--accent);
  color: #06231f; font-weight: 700; display: grid; place-items: center; font-size: 16px;
}
.btn-mini {
  margin-left: 8px; padding: 4px 10px; font-size: 12px; border-radius: 8px;
  background: var(--accent); color: #06231f; border: none; cursor: pointer; font-weight: 600;
}
.device-list { display: flex; flex-direction: column; gap: 8px; }
.dev-item-ctrl {
  display: flex; align-items: center; gap: 10px;
  background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px;
  cursor: pointer; transition: border-color 0.2s;
}
.dev-item-ctrl.active { border-color: var(--accent); }
.dev-item-ctrl .dev-name { font-size: 14px; font-weight: 600; }
.dev-item-ctrl .dev-online { font-size: 11px; color: var(--muted); }
.dev-item-ctrl .dev-hint { margin-left: auto; font-size: 11px; color: var(--muted); }
.dev-item-ctrl .dev-del {
  margin-left: auto; border: none; cursor: pointer;
  width: 28px; height: 28px; border-radius: 8px;
  background: transparent; color: var(--muted); font-size: 13px;
  transition: color 0.2s, background 0.2s;
}
.dev-item-ctrl .dev-del:hover { color: var(--danger); background: rgba(248,113,113,0.12); }
.dot { width: 10px; height: 10px; border-radius: 50%; background: #3a4654; flex: 0 0 auto; }
.dot.ok { background: var(--ok); }
.dot.off { background: var(--danger); }
.empty { text-align: center; color: var(--muted); font-size: 13px; padding: 20px 0; }

/* ============ 配对二维码 ============ */
#pairQrLayer { margin-top: 14px; text-align: center; }
.pair-qr-tip { color: var(--muted); font-size: 12px; margin: 0 0 10px; }
.qr-wrap {
  display: inline-block; background: #fff; padding: 10px; border-radius: 10px;
}
.qr-wrap canvas { display: block; }
.pair-qr-code { font-size: 13px; color: var(--txt); margin: 10px 0 12px; }
.pair-qr-code strong { color: var(--accent); font-family: var(--mono); letter-spacing: 2px; }

@media (max-width: 520px) {
  .grid-2 { grid-template-columns: 1fr; }
  .device-row { grid-template-columns: 1fr 1fr; }
}