/* PowerVision — цвета взяты из маркировки проводов: фаза (ток) коричнево-красная,
   ноль (напряжение) синий, земля (мощность) оливковая. */
:root {
  --bg: #eef1f3;
  --surface: #ffffff;
  --line: #d5dbdf;
  --line-soft: #e6eaed;
  --ink: #12181c;
  --ink-dim: #5b686f;
  --ink-faint: #8996a0;

  --current: #a8432a;
  --voltage: #2b5b96;
  --power: #6a7833;
  --alarm: #c0271b;
  --ok: #2f7d4f;

  --mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-text-size-adjust: 100%;
}

body { min-height: 100vh; }

.wrap { max-width: 1240px; margin: 0 auto; padding: 0 20px 64px; }

/* ---------- шапка ---------- */

.top {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 22px 0 14px;
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}

.brand {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0;
}

.brand span { color: var(--current); }

.device-name { color: var(--ink-dim); font-size: 15px; }

.state {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: var(--ink-dim);
}

.dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--ink-faint);
}
.state.live .dot { background: var(--ok); box-shadow: 0 0 0 3px rgba(47, 125, 79, .16); }
.state.down .dot { background: var(--alarm); box-shadow: 0 0 0 3px rgba(192, 39, 27, .16); }

/* ---------- вкладки ---------- */

.tabs { display: flex; gap: 2px; margin: 0; padding: 0; list-style: none; }

.tabs button {
  appearance: none;
  border: 0;
  background: none;
  font: inherit;
  font-size: 15px;
  color: var(--ink-dim);
  padding: 14px 2px;
  margin-right: 26px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
}
.tabs button:hover { color: var(--ink); }
.tabs button[aria-selected="true"] {
  color: var(--ink);
  border-bottom-color: var(--current);
}
.tabs button:focus-visible { outline: 2px solid var(--voltage); outline-offset: 2px; }

.tabbar { border-bottom: 1px solid var(--line); display: flex; align-items: center; gap: 20px; }
.tabbar .spacer { margin-left: auto; }

/* ---------- показания ---------- */

.readout {
  display: flex;
  align-items: flex-end;
  gap: 44px;
  padding: 30px 0 26px;
  flex-wrap: wrap;
}

.metric .label {
  font-size: 13px;
  color: var(--ink-dim);
  margin-bottom: 6px;
}

.metric .value {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-weight: 500;
  line-height: 0.95;
  letter-spacing: -0.02em;
}

.metric .unit {
  font-family: var(--sans);
  font-weight: 400;
  color: var(--ink-dim);
  margin-left: 6px;
}

.metric.primary .value { font-size: clamp(56px, 12vw, 108px); color: var(--current); }
.metric.primary .unit { font-size: clamp(20px, 3.6vw, 30px); }
.metric.primary.alarm .value { color: var(--alarm); }

.metric.secondary .value { font-size: clamp(28px, 5.4vw, 40px); }
.metric.secondary .unit { font-size: 16px; }
.metric.secondary.v .value { color: var(--voltage); }
.metric.secondary.p .value { color: var(--power); }

.readout .divider {
  align-self: stretch;
  width: 1px;
  background: var(--line);
  margin: 6px 0 4px;
}

/* ---------- тревога ---------- */

.banner {
  display: none;
  align-items: center;
  gap: 12px;
  background: var(--alarm);
  color: #fff;
  padding: 13px 18px;
  font-size: 16px;
  border-radius: 3px;
  margin-bottom: 18px;
}
.banner.on { display: flex; }
.banner b { font-family: var(--mono); font-weight: 600; }

/* ---------- графики ---------- */

.chart-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 0 0 8px;
  flex-wrap: wrap;
}

.chart-title { font-size: 14px; color: var(--ink-dim); margin: 0; font-weight: 500; }
.chart-note { font-size: 12.5px; color: var(--ink-faint); margin-left: auto; }

.chart {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 10px 12px 6px;
  margin-bottom: 22px;
}

canvas { display: block; width: 100%; }
#c-current { height: 300px; }
#c-voltage, #c-power, #c-energy { height: 170px; }
#c-hist { height: 380px; }
#c-report { height: 300px; }

/* ---------- элементы управления ---------- */

button.action {
  appearance: none;
  font: inherit;
  font-size: 14px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  padding: 8px 14px;
  border-radius: 3px;
  cursor: pointer;
}
button.action:hover { border-color: var(--ink-faint); }
button.action:focus-visible { outline: 2px solid var(--voltage); outline-offset: 1px; }
button.action.primary { background: var(--ink); border-color: var(--ink); color: #fff; }
button.action.primary:hover { background: #000; }

.chips { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }

.chip {
  appearance: none;
  font: inherit;
  font-size: 13.5px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink-dim);
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
}
.chip:hover { color: var(--ink); border-color: var(--ink-faint); }
.chip[aria-pressed="true"] {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}
.chip:focus-visible { outline: 2px solid var(--voltage); outline-offset: 1px; }

.range {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  padding: 18px 0;
}

input[type="date"], input[type="number"] {
  font: inherit;
  font-size: 14px;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--surface);
  color: var(--ink);
}
input[type="number"] { width: 120px; font-family: var(--mono); }
input:focus-visible { outline: 2px solid var(--voltage); outline-offset: 1px; }

.range .sep { color: var(--ink-faint); }

/* ---------- сводка отчёта ---------- */

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--surface);
  overflow: hidden;
  margin-bottom: 24px;
}

.stat { padding: 16px 18px; border-right: 1px solid var(--line-soft); }
.stat:last-child { border-right: 0; }
.stat .k { font-size: 12.5px; color: var(--ink-dim); margin-bottom: 7px; }
.stat .v {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: 25px;
  letter-spacing: -0.02em;
}
.stat .v small { font-family: var(--sans); font-size: 14px; color: var(--ink-dim); margin-left: 4px; }
.stat.energy .v { color: var(--power); }

/* ---------- таблицы и события ---------- */

.events { border-top: 1px solid var(--line); }
.events h2 { font-size: 14px; color: var(--ink-dim); font-weight: 500; margin: 22px 0 10px; }

.event {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 9px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14.5px;
}
.event time {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-dim);
  white-space: nowrap;
}
.event.above, .event.below { color: var(--alarm); }
.event.normal { color: var(--ok); }
.event .num { font-family: var(--mono); }

.empty { color: var(--ink-faint); font-size: 14.5px; padding: 12px 0; }

/* ---------- окно границ ---------- */

dialog {
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0;
  max-width: 420px;
  width: calc(100% - 32px);
  color: var(--ink);
  background: var(--surface);
}
dialog::backdrop { background: rgba(18, 24, 28, .38); }

.dlg-body { padding: 22px 24px 8px; }
.dlg-body h2 { margin: 0 0 6px; font-size: 18px; font-weight: 600; }
.dlg-body p { margin: 0 0 18px; color: var(--ink-dim); font-size: 14px; line-height: 1.5; }

.field { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 12px; }
.field label { font-size: 14.5px; }
.field .hint { font-size: 12.5px; color: var(--ink-faint); }

.dlg-error { color: var(--alarm); font-size: 13.5px; min-height: 20px; }
.dlg-foot { display: flex; justify-content: flex-end; gap: 8px; padding: 6px 24px 20px; }

/* ---------- выбор периода ---------- */

.picker { position: relative; display: flex; align-items: center; gap: 6px; }

.pick-time, .pick-date {
  appearance: none;
  font: inherit;
  font-size: 14px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  border-radius: 3px;
  padding: 7px 11px;
  cursor: pointer;
}
.pick-date { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.pick-time { display: grid; place-items: center; padding: 7px 9px; color: var(--ink-dim); }
.pick-time:hover, .pick-date:hover { border-color: var(--ink-faint); }
.pick-date.active { border-color: var(--voltage); box-shadow: 0 0 0 2px rgba(43, 91, 150, .15); }
.pick-time:focus-visible, .pick-date:focus-visible { outline: 2px solid var(--voltage); outline-offset: 1px; }
.pick-dash { color: var(--ink-faint); }

.pop {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 30;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 5px;
  box-shadow: 0 10px 34px rgba(18, 24, 28, .16);
  padding: 12px;
}

.cal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.cal-title { font-size: 15px; font-weight: 500; }
.cal-head .nav {
  appearance: none; border: 0; background: none; cursor: pointer;
  font-size: 22px; line-height: 1; color: var(--ink-dim); padding: 2px 10px; border-radius: 3px;
}
.cal-head .nav:hover { background: var(--bg); color: var(--ink); }

.cal-week, .cal-grid { display: grid; grid-template-columns: repeat(7, 36px); gap: 2px; }
.cal-week span {
  text-align: center;
  font-size: 11.5px;
  color: var(--ink-faint);
  padding-bottom: 4px;
}

.cal-grid .cell {
  appearance: none;
  border: 0;
  background: none;
  font: inherit;
  font-size: 13.5px;
  font-variant-numeric: tabular-nums;
  height: 32px;
  border-radius: 3px;
  cursor: pointer;
  color: var(--ink);
}
.cal-grid .cell.empty { cursor: default; }
.cal-grid .cell:hover:not(.empty) { background: var(--bg); }
.cal-grid .cell.in { background: #e4ebf2; }
.cal-grid .cell.edge { background: var(--voltage); color: #fff; }
.cal-grid .cell.today { box-shadow: inset 0 0 0 1px var(--current); }
.cal-grid .cell.future { color: var(--ink-faint); }

.cal-foot { margin-top: 9px; font-size: 12.5px; color: var(--ink-dim); }

.pop.times { min-width: 250px; }
.time-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 8px; }
.time-row label { font-size: 14px; }
.time-row .time-input {
  font: inherit; font-family: var(--mono); font-size: 15px;
  width: 74px; text-align: center; letter-spacing: 0.04em;
  padding: 6px 8px; border: 1px solid var(--line); border-radius: 3px; background: var(--surface); color: var(--ink);
}
.time-row .time-input:focus-visible { outline: 2px solid var(--voltage); outline-offset: 1px; }
.time-foot { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 4px; }
.time-foot .mini {
  appearance: none; font: inherit; font-size: 12.5px; cursor: pointer;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink-dim);
  border-radius: 999px; padding: 5px 10px;
}
.time-foot .mini:hover { color: var(--ink); border-color: var(--ink-faint); }

@media (max-width: 640px) {
  .cal-week, .cal-grid { grid-template-columns: repeat(7, 1fr); }
  .pop.calendar { left: 0; right: 0; }
}

/* ---------- счётчик оповещений ---------- */

.badge {
  display: inline-block;
  min-width: 19px;
  margin-left: 7px;
  padding: 1px 6px;
  border-radius: 999px;
  background: var(--alarm);
  color: #fff;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 17px;
  text-align: center;
  vertical-align: 1px;
}

/* ---------- текущее состояние ---------- */

.now-state { display: flex; align-items: baseline; gap: 12px; padding-top: 20px; flex-wrap: wrap; }

.chip-state {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: #e3e8ea;
  color: var(--ink);
  font-size: 16px;
  font-weight: 500;
}
.chip-state.alert { background: var(--alarm); color: #fff; }

.now-state .since { font-size: 13.5px; color: var(--ink-dim); }

.freshness { font-size: 13.5px; }
.freshness.stale {
  color: var(--alarm);
  background: #fbe9e7;
  border-radius: 999px;
  padding: 4px 12px;
}

/* ---------- подсказка на графике ---------- */

.tip {
  position: fixed;
  z-index: 50;
  pointer-events: none;
  background: var(--ink);
  color: #fff;
  border-radius: 4px;
  padding: 9px 12px;
  font-size: 13px;
  line-height: 1.55;
  box-shadow: 0 6px 20px rgba(18, 24, 28, .28);
  white-space: nowrap;
}
.tip .t { color: #b9c4c9; margin-bottom: 3px; font-family: var(--mono); font-size: 12px; }
.tip .row { display: flex; justify-content: space-between; gap: 16px; }
.tip .row span:last-child { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.tip .i { color: #f0a58e; }
.tip .u { color: #9dc0ea; }
.tip .p { color: #c7d68a; }

/* ---------- редактор состояний ---------- */

#dlg-states { max-width: 720px; }

.rules-head, .rule {
  display: grid;
  grid-template-columns: 1.6fr 0.8fr 0.8fr 0.7fr 0.9fr 34px;
  gap: 8px;
  align-items: center;
}
.rules-head {
  font-size: 12.5px;
  color: var(--ink-dim);
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 10px;
}
.rule { margin-bottom: 8px; }
.rule input[type="text"], .rule input[type="number"], .rule select {
  font: inherit;
  font-size: 14px;
  width: 100%;
  padding: 7px 9px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--surface);
  color: var(--ink);
}
.rule input[type="number"] { font-family: var(--mono); }
.rule .center { text-align: center; }
.rule input[type="checkbox"] { width: 17px; height: 17px; accent-color: var(--alarm); }
.rule .del {
  appearance: none;
  border: 0;
  background: none;
  color: var(--ink-faint);
  font-size: 19px;
  line-height: 1;
  cursor: pointer;
  padding: 4px;
}
.rule .del:hover { color: var(--alarm); }

button.action.add {
  margin-top: 6px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-left: 10px;
}
button.action.add span {
  font-size: 19px;
  line-height: 1;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  display: grid;
  place-items: center;
  padding-bottom: 2px;
}

/* ---------- список оповещений ---------- */

.alert-row {
  display: grid;
  grid-template-columns: 150px 1fr auto;
  gap: 16px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 15px;
}
.alert-row time { font-family: var(--mono); font-size: 13px; color: var(--ink-dim); }
.alert-row .what { font-weight: 500; }
.alert-row.unseen .what { color: var(--alarm); }
.alert-row .meta { font-size: 13px; color: var(--ink-dim); font-family: var(--mono); }

/* ---------- прочее ---------- */

.hidden { display: none !important; }

.loading { color: var(--ink-faint); font-size: 14.5px; padding: 26px 0; }

@media (max-width: 640px) {
  .wrap { padding: 0 14px 48px; }
  .readout { gap: 24px; padding: 22px 0 18px; }
  .readout .divider { display: none; }
  .metric.secondary .value { font-size: 30px; }
  #c-current { height: 230px; }
  #c-voltage, #c-power, #c-energy { height: 150px; }
  #c-hist { height: 280px; }
  .tabs button { margin-right: 18px; font-size: 14.5px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}