:root {
  --bg: #f3f5f7;
  --panel: #ffffff;
  --panel-2: #f7f9fa;
  --text: #15202b;
  --muted: #64707d;
  --faint: #8b96a2;
  --line: #e2e7ec;
  --line-2: #eef1f4;
  --accent: #0f766e;
  --accent-strong: #0b5f58;
  --accent-soft: #e3f3f1;
  --green: #15803d;  --green-bg: #e6f5ea;
  --amber: #b45309;  --amber-bg: #fcf1df;
  --red: #c02626;    --red-bg: #fceaea;
  --blue: #1d4ed8;   --blue-bg: #e8eefc;
  --purple: #7e22ce; --purple-bg: #f3e8fd;
  --gray: #57616c;   --gray-bg: #edf0f3;
  --shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 1px 3px rgba(16, 24, 40, .06);
  --radius: 12px;
  --sidebar: #0d1f22;
  --sidebar-text: #c9d6d6;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1417;
    --panel: #161d21;
    --panel-2: #1b2328;
    --text: #e4eaee;
    --muted: #97a3ad;
    --faint: #6f7b85;
    --line: #26323a;
    --line-2: #1f292f;
    --accent: #2bb3a3;
    --accent-strong: #3cc7b6;
    --accent-soft: #143430;
    --green: #4ade80;  --green-bg: #12301f;
    --amber: #fbbf24;  --amber-bg: #33270e;
    --red: #f87171;    --red-bg: #361717;
    --blue: #93b4ff;   --blue-bg: #16233f;
    --purple: #d0a6fb; --purple-bg: #2b1940;
    --gray: #aab4bd;   --gray-bg: #232c32;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3);
    --sidebar: #0a1012;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { margin: 0; font-weight: 650; letter-spacing: -.01em; }
h1 { font-size: 22px; }
h2 { font-size: 15px; }
h3 { font-size: 13px; }
.hidden, [hidden] { display: none !important; }
.muted { color: var(--muted); }
.faint { color: var(--faint); }
.small { font-size: 12px; }
.mono { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: 12.5px; }
.num { font-variant-numeric: tabular-nums; }
.right { text-align: right; }
.nowrap { white-space: nowrap; }

/* ---------- layout */
.shell { display: grid; grid-template-columns: 232px 1fr; min-height: 100vh; }
.sidebar {
  background: var(--sidebar); color: var(--sidebar-text);
  display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh; padding: 18px 12px;
}
.brand { display: flex; gap: 10px; align-items: center; padding: 4px 8px 20px; }
.logo {
  width: 34px; height: 34px; border-radius: 9px; background: linear-gradient(135deg, #14b8a6, #0f766e);
  display: grid; place-items: center; flex: none;
}
.logo svg { width: 20px; height: 20px; fill: none; stroke: #fff; stroke-width: 2.6; stroke-linecap: round; stroke-linejoin: round; }
.logo.big { width: 48px; height: 48px; border-radius: 12px; margin: 0 auto 12px; }
.logo.big svg { width: 28px; height: 28px; }
.brand-name { color: #fff; font-weight: 650; font-size: 15px; }
.brand-sub { font-size: 12px; color: #7f9a9a; }
.nav { display: flex; flex-direction: column; gap: 2px; }
.nav a {
  display: flex; align-items: center; gap: 10px; padding: 9px 10px; border-radius: 8px;
  color: var(--sidebar-text); font-weight: 500;
}
.nav a:hover { background: rgba(255, 255, 255, .06); text-decoration: none; color: #fff; }
.nav a.active { background: rgba(45, 212, 191, .14); color: #fff; }
.nav a.active svg { stroke: #5eead4; }
.nav svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.nav .count { margin-left: auto; background: #b45309; color: #fff; font-size: 11px; border-radius: 99px; padding: 0 7px; font-weight: 600; }
.side-foot { margin-top: auto; padding: 12px 10px 4px; border-top: 1px solid rgba(255, 255, 255, .08); font-size: 12px; display: grid; gap: 6px; }
.side-foot .row { display: flex; align-items: center; gap: 8px; }

.main { min-width: 0; display: flex; flex-direction: column; }
.topbar {
  display: flex; align-items: center; gap: 12px; padding: 18px 28px 14px;
  position: sticky; top: 0; z-index: 5; background: var(--bg);
}
.top-actions { margin-left: auto; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.view { padding: 4px 28px 40px; display: grid; gap: 16px; align-content: start; }

/* ---------- cards */
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); min-width: 0; }
.card-head { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--line-2); flex-wrap: wrap; }
.spacer { margin-left: auto; }
.card-body { padding: 16px; }
.card-foot { padding: 10px 16px; border-top: 1px solid var(--line-2); }
.stack { display: grid; gap: 16px; align-content: start; min-width: 0; }
.grid-main { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 16px; align-items: start; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.kpis { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 12px; }
.kpi { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow); position: relative; overflow: hidden; }
.kpi::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 3px; background: var(--k, var(--accent)); }
.kpi .label { color: var(--muted); font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
.kpi .value { font-size: 28px; font-weight: 700; margin: 2px 0; font-variant-numeric: tabular-nums; }
.kpi .hint { color: var(--faint); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.kpi.green { --k: var(--green); } .kpi.amber { --k: var(--amber); } .kpi.red { --k: var(--red); }
.kpi.blue { --k: var(--blue); } .kpi.purple { --k: var(--purple); } .kpi.gray { --k: var(--faint); }

/* ---------- tables */
.table-wrap { overflow: auto; max-height: 640px; }
.table-wrap.tall { max-height: none; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line-2); vertical-align: middle; }
th { font-size: 11.5px; font-weight: 650; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; background: var(--panel-2); position: sticky; top: 0; z-index: 1; white-space: nowrap; }
tbody tr:hover { background: var(--panel-2); }
td .sub { display: block; color: var(--faint); font-size: 12px; }
tr.clickable { cursor: pointer; }
.empty { padding: 36px 16px; text-align: center; color: var(--muted); }
.empty.error { color: var(--red); }
.loading { padding: 48px; text-align: center; color: var(--muted); }

/* ---------- chips */
.chip { display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px; border-radius: 99px; font-size: 12px; font-weight: 600; white-space: nowrap; background: var(--gray-bg); color: var(--gray); }
.chip.green { background: var(--green-bg); color: var(--green); }
.chip.amber { background: var(--amber-bg); color: var(--amber); }
.chip.red { background: var(--red-bg); color: var(--red); }
.chip.blue { background: var(--blue-bg); color: var(--blue); }
.chip.purple { background: var(--purple-bg); color: var(--purple); }
.chip.teal { background: var(--accent-soft); color: var(--accent); }
.chips { display: flex; gap: 4px; flex-wrap: wrap; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--faint); display: inline-block; flex: none; }
.dot.on { background: #22c55e; box-shadow: 0 0 0 3px rgba(34, 197, 94, .2); }
.dot.off { background: #ef4444; }

/* ---------- controls */
.btn {
  display: inline-flex; align-items: center; gap: 6px; justify-content: center;
  border: 1px solid var(--line); background: var(--panel); color: var(--text);
  padding: 7px 12px; border-radius: 8px; font: inherit; font-weight: 600; cursor: pointer; white-space: nowrap;
}
.btn:hover { border-color: var(--faint); }
.btn:disabled { opacity: .55; cursor: progress; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-strong); }
.btn.danger { color: var(--red); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--muted); }
.btn.ghost:hover { color: var(--text); background: var(--panel-2); }
.btn.small { padding: 4px 9px; font-size: 12.5px; }
.btn svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
input, select {
  font: inherit; color: var(--text); background: var(--panel); border: 1px solid var(--line);
  border-radius: 8px; padding: 7px 10px; min-width: 0;
}
input:focus, select:focus { outline: 2px solid color-mix(in srgb, var(--accent) 40%, transparent); border-color: var(--accent); }
input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--accent); }
input.narrow { width: 90px; }
.field { display: grid; gap: 4px; font-size: 12px; color: var(--muted); font-weight: 600; }
.toolbar { display: flex; gap: 10px; align-items: end; flex-wrap: wrap; padding: 14px 16px; }
.toolbar .grow { flex: 1; min-width: 180px; }
.toolbar .grow input { width: 100%; }

.tabs { display: inline-flex; background: var(--panel-2); border: 1px solid var(--line); border-radius: 9px; padding: 3px; gap: 2px; flex-wrap: wrap; }
.tabs button { border: 0; background: transparent; font: inherit; font-size: 12.5px; font-weight: 600; color: var(--muted); padding: 5px 10px; border-radius: 6px; cursor: pointer; }
.tabs button.active { background: var(--panel); color: var(--text); box-shadow: var(--shadow); }
.tabs button .n { color: var(--faint); font-weight: 500; margin-left: 3px; }

.banner { display: flex; gap: 12px; align-items: center; padding: 12px 16px; border-radius: var(--radius); border: 1px solid; flex-wrap: wrap; }
.banner.info { background: var(--blue-bg); border-color: color-mix(in srgb, var(--blue) 25%, transparent); }
.banner.warn { background: var(--amber-bg); border-color: color-mix(in srgb, var(--amber) 25%, transparent); }
.banner .grow { flex: 1; min-width: 200px; }
.banner b { display: block; }

/* ---------- feed */
.feed { list-style: none; margin: 0; padding: 4px 0; max-height: 470px; overflow: auto; }
.feed li { display: flex; gap: 10px; align-items: center; padding: 8px 16px; }
.feed li + li { border-top: 1px solid var(--line-2); }
.avatar { width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; font-size: 12px; font-weight: 700; flex: none; background: var(--accent-soft); color: var(--accent); }
.avatar.unknown { background: var(--purple-bg); color: var(--purple); }
.feed .who { min-width: 0; flex: 1; }
.feed .who b { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-weight: 600; }
.feed .when { text-align: right; font-variant-numeric: tabular-nums; }
.feed .when b { display: block; }

/* ---------- device */
.info-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 14px 18px; padding: 16px; }
.info-grid .k { font-size: 11.5px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
.info-grid .v { font-weight: 600; margin-top: 2px; word-break: break-all; }
.device-mini { padding: 14px 16px; display: grid; gap: 10px; }
.device-mini .top { display: flex; align-items: center; gap: 8px; }
.device-mini .stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.device-mini .stats div { background: var(--panel-2); border-radius: 8px; padding: 8px; text-align: center; }
.device-mini .stats b { display: block; font-size: 17px; }
.actions-row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; padding: 0 16px 16px; }
.steps { margin: 0; padding: 0 16px 16px 36px; display: grid; gap: 8px; }
.kv-table td:first-child { color: var(--muted); width: 210px; }
details > summary { cursor: pointer; list-style: none; }
details > summary::-webkit-details-marker { display: none; }

/* ---------- trend */
.bars { display: flex; gap: 8px; align-items: stretch; height: 190px; padding: 16px 16px 8px; }
.bar-col { flex: 1; display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.bar { flex: 1; display: flex; flex-direction: column; justify-content: flex-end; border-radius: 6px; overflow: hidden; background: var(--panel-2); }
.seg { width: 100%; min-height: 2px; }
.seg.green { background: #22c55e; } .seg.amber { background: #f59e0b; } .seg.red { background: #ef4444; } .seg.blue { background: #60a5fa; }
.bar-label { font-size: 11px; color: var(--faint); text-align: center; white-space: nowrap; overflow: hidden; }
.bar-col.today .bar-label { color: var(--text); font-weight: 700; }
.legend { display: flex; gap: 12px; font-size: 12px; color: var(--muted); flex-wrap: wrap; }
.legend span { display: inline-flex; align-items: center; gap: 5px; }
.legend i { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }

/* ---------- rules */
.rule-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; padding: 16px; }
.rule-card { border: 1px solid var(--line); border-radius: 10px; padding: 14px; display: grid; gap: 10px; background: var(--panel-2); }
.rule-card .head { display: flex; gap: 8px; align-items: center; }
.rule-card .time { font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; }
.days { display: flex; gap: 3px; }
.days span { font-size: 11px; font-weight: 700; flex: 1 1 0; min-width: 0; text-align: center; padding: 3px 0; border-radius: 6px; background: var(--gray-bg); color: var(--faint); }
.days span.on { background: var(--accent-soft); color: var(--accent); }
.day-picker { display: flex; gap: 6px; flex-wrap: wrap; }
.day-picker label { cursor: pointer; }
.day-picker input { display: none; }
.day-picker span { display: inline-block; padding: 7px 11px; border-radius: 8px; border: 1px solid var(--line); font-weight: 600; font-size: 13px; color: var(--muted); user-select: none; }
.day-picker input:checked + span { background: var(--accent); border-color: var(--accent); color: #fff; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 14px; padding: 16px; }
.form-grid .wide { grid-column: 1 / -1; }
.form-grid input[type="text"], .form-grid input[type="time"], .form-grid input[type="number"] { width: 100%; }
.pen-table th, .pen-table td { padding: 6px 6px; }
.pen-table input { width: 100%; min-width: 64px; padding: 5px 7px; }
.check { display: inline-flex; gap: 8px; align-items: center; font-weight: 600; color: var(--text); font-size: 13px; cursor: pointer; }
.explain { padding: 0 16px 16px; color: var(--muted); font-size: 13px; }

/* ---------- sync */
.modes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; padding: 16px; }
.mode { border: 1.5px solid var(--line); border-radius: 10px; padding: 14px; cursor: pointer; display: grid; gap: 6px; align-content: start; }
.mode:hover { border-color: var(--faint); }
.mode.active { border-color: var(--accent); background: var(--accent-soft); }
.mode input { display: none; }
.mode b { font-size: 14px; }
.mode p { margin: 0; color: var(--muted); font-size: 12.5px; }
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line-2); }
.stat-row > div { background: var(--panel); padding: 12px 16px; }
.stat-row .k { font-size: 12px; color: var(--muted); }
.stat-row .v { font-size: 17px; font-weight: 700; }

/* ---------- login + toast */
.login { position: fixed; inset: 0; background: var(--bg); display: grid; place-items: center; z-index: 50; }
.login-card { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 30px; width: min(360px, 92vw); display: grid; gap: 12px; text-align: center; box-shadow: var(--shadow); }
.login-card input { width: 100%; }
.login-error { color: var(--red); min-height: 18px; font-size: 13px; }
.toast {
  position: fixed; bottom: 22px; left: 50%; transform: translate(-50%, 20px); opacity: 0; pointer-events: none;
  background: #14232a; color: #fff; padding: 10px 16px; border-radius: 10px; font-weight: 600; transition: .2s; z-index: 60; max-width: 90vw;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.err { background: #b91c1c; }

@media (max-width: 1250px) {
  .kpis { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid-main { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; padding: 10px; }
  .brand { padding-bottom: 8px; }
  .nav { flex-direction: row; overflow-x: auto; }
  .side-foot { display: none; }
  .topbar, .view { padding-left: 16px; padding-right: 16px; }
  .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .modes, .grid-2, .stat-row { grid-template-columns: 1fr; }
}