:root {
  color-scheme: dark;
  --bg: #0f1115;
  --panel: #171a21;
  --panel-2: #1e222b;
  --line: #2a2f3a;
  --text: #e6e8ee;
  --muted: #9aa3b2;
  --accent: #4f8cff;
  --ok: #3ecf8e;
  --warn: #e6b84d;
  --danger: #ff5c5c;
  --radius: 12px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
}
.hidden { display: none !important; }
header.app-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
  position: sticky;
  top: 0;
  z-index: 10;
}
header.app-bar h1 { margin: 0; font-size: 17px; font-weight: 650; }
.grow { flex: 1; }
.lang-switch {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: var(--panel-2);
}
.lang-switch button {
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 12px;
  font-weight: 700;
  padding: 6px 11px;
  cursor: pointer;
}
.lang-switch button.sel {
  background: var(--accent);
  color: #fff;
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); display: inline-block; }
.dot.on { background: var(--ok); }
.dot.off { background: var(--danger); }
.dot.warn { background: var(--warn); }
main { max-width: 1100px; margin: 0 auto; padding: 18px 16px 48px; }
.mono { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 12px; }
.card-flush { padding-bottom: 8px; }
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 14px;
}
.card h2 { margin: 0 0 12px; font-size: 15px; }
.muted { color: var(--muted); }
.btn {
  appearance: none;
  border: 0;
  border-radius: 8px;
  padding: 10px 16px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  background: var(--accent);
  color: #fff;
}
.btn.ghost { background: var(--panel-2); border: 1px solid var(--line); color: var(--text); }
a.btn { text-decoration: none; display: inline-flex; align-items: center; }
.btn.sm { padding: 6px 12px; font-size: 13px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
input {
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 8px;
  padding: 10px 12px;
  font: inherit;
}
label.field { display: grid; gap: 6px; font-size: 12px; color: var(--muted); margin-bottom: 12px; }
.login-wrap { max-width: 380px; margin: 48px auto; }
.gym-grid { display: grid; gap: 10px; }
.gym-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
}
.gym-row:hover { border-color: var(--accent); }
.gym-row .title { font-weight: 650; flex: 1; }
.tabs { display: flex; gap: 4px; flex-wrap: wrap; margin-bottom: 14px; }
.tabs button {
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  padding: 8px 12px;
  cursor: pointer;
  font: inherit;
}
.tabs button.sel { color: var(--text); border-bottom-color: var(--accent); }
.device-list { display: grid; gap: 8px; }
.device-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  background: var(--panel-2);
  border-radius: 10px;
  border: 1px solid var(--line);
}
.device-row.unavail { opacity: 0.55; }
.device-row .meta { min-width: 0; flex: 1; }
.device-row .name { font-weight: 600; }
.device-row .sub { font-size: 12px; color: var(--muted); word-break: break-all; }
.toggle {
  flex-shrink: 0;
  min-width: 76px;
  padding: 8px 10px;
  border: 0;
  border-radius: 8px;
  font-weight: 700;
  font-size: 12px;
  cursor: pointer;
  background: #2a3140;
  color: var(--muted);
}
.toggle.on { background: #1d3a2c; color: var(--ok); }
.toggle.off { background: #252830; color: var(--muted); }
.toggle.busy { opacity: 0.5; pointer-events: none; }
.group-title { font-size: 12px; color: var(--muted); margin: 14px 0 6px; text-transform: uppercase; letter-spacing: 0.06em; }
pre.props {
  margin: 0;
  padding: 12px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 11px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
}
details.inv { margin-bottom: 8px; border: 1px solid var(--line); border-radius: 8px; padding: 0 10px; background: var(--panel-2); }
details.inv summary { cursor: pointer; padding: 10px 4px; font-weight: 600; }
#toast {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 20px;
  max-width: 520px;
  margin: 0 auto;
  padding: 12px 16px;
  border-radius: 10px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  transform: translateY(120%);
  transition: transform 0.25s;
  z-index: 50;
}
#toast.show { transform: translateY(0); }
#toast.err { border-color: var(--danger); color: var(--danger); }
.empty { padding: 24px; text-align: center; color: var(--muted); }

/* ── Zigbee device cards ── */
.zb-grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.zb-card {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 14px 10px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.zb-card.offline { opacity: 0.72; border-color: #3a3030; }
.zb-head { display: flex; gap: 12px; align-items: flex-start; }
.zb-icon {
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--bg); border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center; font-size: 22px;
}
.zb-title { flex: 1; min-width: 0; }
.zb-title h3 { margin: 0 0 4px; font-size: 16px; }
.zb-ieee { margin: 0 0 6px; color: var(--muted); font-size: 11px; word-break: break-all; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  font-size: 11px; padding: 3px 8px; border-radius: 999px;
  background: var(--bg); border: 1px solid var(--line); color: var(--muted);
}
.badge {
  font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em;
  padding: 5px 10px; border-radius: 999px; border: 1px solid var(--line);
  color: var(--muted); white-space: nowrap;
}
.badge.on { color: var(--ok); border-color: rgba(62, 207, 142, 0.35); background: rgba(62, 207, 142, 0.08); }
.badge.off { color: var(--danger); border-color: rgba(255, 92, 92, 0.35); background: rgba(255, 92, 92, 0.06); }
.badge.sm { font-size: 10px; padding: 3px 8px; }

.signal { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--muted); }
.signal-track { flex: 1; height: 6px; background: var(--bg); border-radius: 999px; overflow: hidden; }
.signal-fill { height: 100%; border-radius: 999px; background: var(--ok); }
.signal-fill.mid { background: var(--warn); }
.signal-fill.bad { background: var(--danger); }
.signal-val { min-width: 2.5em; text-align: right; font-variant-numeric: tabular-nums; }

.cluster { border-top: 1px solid var(--line); padding-top: 8px; }
.cluster h4 { margin: 0 0 8px; font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); font-weight: 650; }
.cluster-icon { margin-right: 4px; }
.kv-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 12px; }
.kv { display: contents; }
.kv dt { font-size: 11px; color: var(--muted); margin: 0; }
.kv dd { margin: 0 0 6px; font-size: 13px; font-weight: 600; word-break: break-word; }

.cluster-ctrl .ctrl-row {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 8px 0; border-bottom: 1px solid var(--line);
}
.cluster-ctrl .ctrl-row:last-child { border-bottom: 0; }
.ctrl-meta { min-width: 0; flex: 1; }
.ctrl-dom { margin-right: 6px; }
.ctrl-name { font-weight: 600; font-size: 14px; }
.ctrl-sub { display: block; font-size: 11px; color: var(--muted); margin-top: 2px; }

/* Modbus */
.modbus-grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.modbus-board {
  background: var(--panel-2); border: 1px solid var(--line); border-radius: 12px; padding: 12px;
}
.modbus-board header { margin-bottom: 10px; }
.modbus-board h3 { margin: 0 0 2px; font-size: 15px; }
.relay-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.relay-tile {
  border: 1px solid var(--line); border-radius: 10px; padding: 10px 6px;
  background: var(--bg); cursor: pointer; color: inherit; font: inherit;
  display: flex; flex-direction: column; align-items: center; gap: 4px;
}
.relay-tile.on { border-color: rgba(62, 207, 142, 0.45); background: rgba(62, 207, 142, 0.1); color: var(--ok); }
.relay-tile.off { color: var(--muted); }
.relay-num { font-size: 18px; font-weight: 700; }
.relay-state { font-size: 10px; font-weight: 700; letter-spacing: 0.08em; }

/* Plans */
.plan-grid { display: grid; gap: 10px; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.plan-card {
  background: var(--panel-2); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px;
}
.plan-card.disabled { opacity: 0.65; }
.plan-card header { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; margin-bottom: 8px; }
.plan-card h4 { margin: 0; font-size: 14px; }
.days-row { font-size: 13px; font-weight: 600; margin: 0 0 8px; }
.timer-row { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 6px; }
.timer-chip {
  font-size: 11px; padding: 4px 8px; border-radius: 8px;
  background: var(--bg); border: 1px solid var(--line);
}
.timer-chip.on { border-color: rgba(62, 207, 142, 0.4); color: var(--ok); }
.timer-chip.off { border-color: rgba(255, 92, 92, 0.35); color: #ffb4b4; }

/* Device tree */
.tree { display: flex; flex-direction: column; gap: 6px; }
.tree-node { margin-left: calc(var(--depth, 0) * 16px); }
.tree-row {
  display: flex; align-items: center; gap: 10px; padding: 10px 12px;
  background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px;
}
.tree-row.absent { opacity: 0.55; }
.tree-icon { font-size: 20px; }
.tree-body { flex: 1; min-width: 0; }
.tree-body strong { display: block; margin-bottom: 4px; }