:root {
  color-scheme: light;
  --bg: #f4f3ee;
  --surface: #fcfcfb;
  --surface-2: #f0efe9;
  --border: #dddcd3;
  --text: #17201a;
  --text-2: #4e5650;
  --muted: #7a807b;
  --brand: #1f8a4c;
  --brand-ink: #ffffff;
  --series-temp: #eb6834;
  --series-hum: #2a78d6;
  --series-soil: #8a5a2b;
  --series-flow: #1baf7a;
  --band: rgba(42, 120, 214, 0.10);
  --band-pump: rgba(27, 175, 122, 0.13);
  --grid: #e7e6df;
  --good: #0ca30c;
  --warning: #fab219;
  --serious: #ec835a;
  --critical: #d03b3b;
  --shadow: 0 1px 2px rgba(20, 30, 20, .06), 0 4px 14px rgba(20, 30, 20, .05);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #121412;
    --surface: #1a1c1a;
    --surface-2: #232622;
    --border: #343832;
    --text: #eef0ea;
    --text-2: #c3c7bd;
    --muted: #8d9389;
    --brand: #2fa862;
    --series-temp: #d95926;
    --series-hum: #3987e5;
    --series-soil: #c08a52;
    --series-flow: #199e70;
    --band: rgba(57, 135, 229, 0.16);
    --band-pump: rgba(25, 158, 112, 0.18);
    --grid: #2b2e2a;
    --shadow: none;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #121412; --surface: #1a1c1a; --surface-2: #232622; --border: #343832;
  --text: #eef0ea; --text-2: #c3c7bd; --muted: #8d9389; --brand: #2fa862;
  --series-temp: #d95926; --series-hum: #3987e5; --series-soil: #c08a52; --series-flow: #199e70;
  --band: rgba(57, 135, 229, 0.16); --band-pump: rgba(25, 158, 112, 0.18); --grid: #2b2e2a; --shadow: none;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", sans-serif;
  font-variant-numeric: tabular-nums;
}
a { color: var(--brand); }
button {
  font: inherit; color: inherit; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface); border-radius: 8px; padding: 6px 12px;
}
button:hover { border-color: var(--text-2); }
button:disabled { opacity: .45; cursor: not-allowed; }
button.primary { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }
button.danger { color: var(--critical); border-color: color-mix(in srgb, var(--critical) 50%, var(--border)); }
button.ghost { border-color: transparent; background: transparent; }
input, select {
  font: inherit; color: inherit; background: var(--surface); border: 1px solid var(--border);
  border-radius: 6px; padding: 5px 8px; width: 100%;
}
.muted { color: var(--muted); }
.small { font-size: 13px; }

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 10px 20px; background: var(--surface); border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand svg { width: 28px; height: 28px; fill: var(--brand); }
.brand strong { display: block; font-size: 17px; letter-spacing: .2px; }
.brand span { font-size: 12px; }
.devices { display: flex; gap: 6px; flex-wrap: wrap; flex: 1; }
.devices button { display: flex; align-items: center; gap: 6px; padding: 5px 10px; border-radius: 999px; }
.devices button.on { border-color: var(--brand); box-shadow: inset 0 0 0 1px var(--brand); }
.devices .tag { font-size: 11px; padding: 0 5px; border-radius: 4px; background: var(--surface-2); color: var(--text-2); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); display: inline-block; }
.dot.ok { background: var(--good); }
.dot.bad { background: var(--critical); }
.top-right { display: flex; align-items: center; gap: 10px; }
.pill { font-size: 12px; padding: 3px 10px; border-radius: 999px; background: var(--surface-2); color: var(--text-2); }
.clock { font-size: 13px; color: var(--text-2); }

.banner {
  margin: 12px 20px 0; padding: 10px 14px; border-radius: 10px; font-weight: 600;
  background: color-mix(in srgb, var(--critical) 12%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--critical) 45%, var(--border));
}

main { padding: 16px 20px 8px; display: grid; gap: 16px; max-width: 1400px; margin: 0 auto; }
footer { text-align: center; padding: 8px 20px 24px; }
.grid { display: grid; gap: 16px; }
.grid.kpis { grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  padding: 16px; box-shadow: var(--shadow); min-width: 0;
}
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 10px; }
h2 { font-size: 16px; margin: 0; display: flex; align-items: center; gap: 8px; }
.count { font-size: 12px; background: var(--surface-2); border-radius: 999px; padding: 1px 8px; }

/* ---------- KPI tiles ---------- */
.kpi { padding: 14px 16px; }
.kpi .label { font-size: 13px; color: var(--text-2); display: flex; justify-content: space-between; gap: 8px; }
.kpi .value { font-size: 30px; font-weight: 650; line-height: 1.15; margin-top: 4px; letter-spacing: -.5px; }
.kpi .value small { font-size: 15px; font-weight: 500; color: var(--text-2); margin-left: 2px; }
.kpi .sub { font-size: 12px; color: var(--muted); margin-top: 2px; }
.kpi.fault .value { color: var(--critical); font-size: 20px; }

.status { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; font-weight: 600; }
.status::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.status.good { color: var(--good); }
.status.warning { color: color-mix(in srgb, var(--warning) 75%, var(--text)); }
.status.critical { color: var(--critical); }
.status.idle { color: var(--muted); }

/* ---------- actuators ---------- */
.actuator .head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; flex-wrap: wrap; }
.actuator h3 { margin: 0; font-size: 15px; }
.actuator .state { font-size: 26px; font-weight: 650; margin: 6px 0 2px; }
.actuator .state.on { color: var(--brand); }
.actuator .state.lock { color: var(--critical); }
.actuator .row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; align-items: center; }
.actuator .last { font-size: 12px; color: var(--muted); margin-top: 10px; min-height: 18px; }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.seg button { border: 0; border-radius: 0; padding: 5px 10px; background: transparent; }
.seg button + button { border-left: 1px solid var(--border); }
.seg button.on { background: var(--text); color: var(--surface); }

/* ---------- charts ---------- */
.today { display: flex; flex-wrap: wrap; gap: 8px 20px; font-size: 13px; color: var(--text-2); margin-bottom: 8px; }
.today b { color: var(--text); font-weight: 650; }
.charts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 24px; }
@media (max-width: 900px) { .charts { grid-template-columns: 1fr; } }
figure { margin: 0; min-width: 0; }
figcaption { font-size: 13px; font-weight: 600; margin-bottom: 4px; }
figcaption .muted { font-weight: 400; }
.chart { height: 190px; position: relative; }
.chart svg { width: 100%; height: 100%; display: block; overflow: visible; }
.chart .empty { position: absolute; inset: 0; display: grid; place-items: center; color: var(--muted); font-size: 13px; }
.axis text { fill: var(--muted); font-size: 11px; }
.axis line, .gridline { stroke: var(--grid); stroke-width: 1; }
.threshold { stroke: var(--text-2); stroke-dasharray: 4 4; stroke-width: 1; opacity: .7; }
.threshold-label { fill: var(--text-2); font-size: 10px; }
.crosshair { stroke: var(--text-2); stroke-width: 1; }
.tooltip {
  position: fixed; z-index: 30; pointer-events: none; padding: 6px 9px; border-radius: 8px;
  background: var(--text); color: var(--surface); font-size: 12px; white-space: nowrap; box-shadow: var(--shadow);
}

/* ---------- incidents ---------- */
.incidents { display: grid; gap: 10px; }
.incidents .none { color: var(--muted); padding: 8px 0; }
.incident {
  border: 1px solid var(--border); border-left: 4px solid var(--muted); border-radius: 10px; padding: 12px 14px;
  background: var(--surface);
}
.incident.critical { border-left-color: var(--critical); }
.incident.warning { border-left-color: var(--warning); }
.incident .line1 { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; }
.incident .title { font-weight: 650; }
.incident .msg { margin: 6px 0; color: var(--text-2); font-size: 14px; }
.incident .meta { font-size: 12px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 4px 14px; }
.chip { font-size: 11px; padding: 1px 7px; border-radius: 999px; background: var(--surface-2); color: var(--text-2); }
.chip.datadog { background: color-mix(in srgb, #632ca6 16%, var(--surface)); color: color-mix(in srgb, #632ca6 70%, var(--text)); }
.chip.st-open { background: color-mix(in srgb, var(--critical) 14%, var(--surface)); color: var(--critical); }
.chip.st-acknowledged { background: color-mix(in srgb, var(--warning) 20%, var(--surface)); }
.chip.st-verifying { background: color-mix(in srgb, var(--series-hum) 18%, var(--surface)); }
.chip.st-resolved { background: color-mix(in srgb, var(--good) 16%, var(--surface)); color: var(--good); }
.incident .actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.timeline { margin: 10px 0 0; padding: 0 0 0 14px; border-left: 2px solid var(--border); font-size: 13px; }
.timeline li { list-style: none; margin: 0 0 6px; position: relative; }
.timeline li::before { content: ""; position: absolute; left: -19px; top: 6px; width: 8px; height: 8px; border-radius: 50%; background: var(--muted); }
.timeline time { color: var(--muted); margin-right: 6px; }
.spinner { display: inline-block; width: 12px; height: 12px; border: 2px solid var(--border); border-top-color: var(--series-hum); border-radius: 50%; animation: spin .8s linear infinite; vertical-align: -2px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- tabs & tables ---------- */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin: -4px 0 12px; flex-wrap: wrap; }
.tabs button { border: 0; border-bottom: 2px solid transparent; border-radius: 0; background: transparent; padding: 8px 12px; color: var(--text-2); }
.tabs button.on { color: var(--text); border-bottom-color: var(--brand); font-weight: 600; }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
th, td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--text-2); font-weight: 600; background: var(--surface-2); }
.settings { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.settings fieldset { border: 1px solid var(--border); border-radius: 10px; padding: 10px 14px 14px; margin: 0; }
.settings legend { font-weight: 650; padding: 0 6px; }
.settings label { display: grid; grid-template-columns: 1fr 90px; align-items: center; gap: 10px; font-size: 13px; margin: 7px 0; }
.sim { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 10px; }
.sim button { text-align: left; padding: 10px 12px; }
.sim button b { display: block; }
.sim button span { font-size: 12px; color: var(--muted); }

.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); z-index: 40;
  background: var(--text); color: var(--surface); padding: 9px 16px; border-radius: 10px; font-size: 14px; box-shadow: var(--shadow);
  max-width: calc(100vw - 32px);
}

@media (max-width: 640px) {
  .topbar { padding: 10px 16px; }
  main { padding: 12px 16px; }
  .banner { margin: 12px 16px 0; }
  .kpi .value { font-size: 24px; }
  .charts { grid-template-columns: 1fr; }
}

.actuator .last.why { margin-top: 4px; color: var(--text); }
.timeline li.dd { color: color-mix(in srgb, #632ca6 75%, var(--text)); }
.timeline li.dd::before { background: #632ca6; }
.ddlinks { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-top: 8px; }