:root {
  color-scheme: light;
  --bg: #f5f7f6;
  --surface: #ffffff;
  --surface-2: #eef2f0;
  --line: #d9e0dc;
  --ink: #101614;
  --ink-2: #48534e;
  --muted: #6d7873;
  --s1: #2a78d6;
  --s2: #eb6834;
  --ok: #138a5a;
  --ok-bg: #e2f4ea;
  --use: #2a78d6;
  --use-bg: #e3eefb;
  --warn: #a86a00;
  --warn-bg: #fbf0d9;
  --res: #6250d6;
  --res-bg: #ecebfb;
  --off: #7b8580;
  --off-bg: #eceeed;
  --bad: #c03a39;
  --bad-bg: #fbe6e6;
  --heat-0: #f2f6fc;
  --heat-1: #0d366b;
  --focus: #2a78d6;
  --max: 1180px;
  --font: "Noto Sans Thai", "Leelawadee UI", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "SFMono-Regular", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0f1312;
    --surface: #171c1a;
    --surface-2: #1f2623;
    --line: #2c3531;
    --ink: #eef2ef;
    --ink-2: #bfc8c3;
    --muted: #8d9892;
    --s1: #3987e5;
    --s2: #d95926;
    --ok: #4cc58d;
    --ok-bg: #16301f;
    --use: #6da7ec;
    --use-bg: #172a40;
    --warn: #e2a43a;
    --warn-bg: #33270f;
    --res: #9085e9;
    --res-bg: #24213f;
    --off: #87918c;
    --off-bg: #232927;
    --bad: #e66767;
    --bad-bg: #3a1a1a;
    --heat-0: #1a2230;
    --heat-1: #86b6ef;
    --focus: #6da7ec;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f1312;
  --surface: #171c1a;
  --surface-2: #1f2623;
  --line: #2c3531;
  --ink: #eef2ef;
  --ink-2: #bfc8c3;
  --muted: #8d9892;
  --s1: #3987e5;
  --s2: #d95926;
  --ok: #4cc58d;
  --ok-bg: #16301f;
  --use: #6da7ec;
  --use-bg: #172a40;
  --warn: #e2a43a;
  --warn-bg: #33270f;
  --res: #9085e9;
  --res-bg: #24213f;
  --off: #87918c;
  --off-bg: #232927;
  --bad: #e66767;
  --bad-bg: #3a1a1a;
  --heat-0: #1a2230;
  --heat-1: #86b6ef;
  --focus: #6da7ec;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.55 var(--font);
  font-variant-numeric: tabular-nums;
}
a { color: inherit; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.wrap { max-width: var(--max); margin: 0 auto; padding-inline: 16px; }
@media (min-width: 720px) { .wrap { padding-inline: 28px; } }

/* header */
.top { border-bottom: 1px solid var(--line); background: var(--surface); }
.top .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; padding-block: 14px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; letter-spacing: .01em; }
.plug { width: 30px; height: 30px; border-radius: 8px; background: var(--ink); color: var(--bg); display: grid; place-items: center; font: 700 11px/1 var(--mono); letter-spacing: .02em; }
.brand small { display: block; font-weight: 400; color: var(--muted); font-size: 12px; letter-spacing: 0; }
.tabs { display: flex; gap: 4px; margin-left: auto; }
.tabs a { text-decoration: none; padding: 6px 12px; border-radius: 6px; color: var(--ink-2); font-size: 14px; }
.tabs a[aria-current="page"] { background: var(--surface-2); color: var(--ink); font-weight: 600; }
.tabs a:hover { color: var(--ink); }

main { padding-block: 24px 48px; display: grid; gap: 28px; }
h1 { font-size: clamp(22px, 3vw, 28px); line-height: 1.2; margin: 0; text-wrap: balance; }
h2 { font-size: 17px; margin: 0; text-wrap: balance; }
.sub { color: var(--muted); margin: 4px 0 0; font-size: 14px; }
.label { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }

.pagehead { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 12px; }
.fresh { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--ink-2); }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--ok); flex: none; }
.dot.stale { background: var(--bad); }
.banner { border: 1px solid var(--bad); background: var(--bad-bg); color: var(--ink); border-radius: 8px; padding: 10px 14px; font-size: 14px; }

.panel { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 18px; min-width: 0; }
.panel-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 6px 16px; margin-bottom: 14px; }
.panel-head .note { color: var(--muted); font-size: 13px; }

/* stations */
.stations { display: grid; gap: 20px; grid-template-columns: 1fr; }
@media (min-width: 980px) { .stations { grid-template-columns: 6fr 11fr; } }
.station-count { display: flex; align-items: baseline; gap: 6px; }
.station-count b { font-size: 34px; line-height: 1; }
.station-count span { color: var(--muted); font-size: 14px; }
.swatch { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 6px; vertical-align: 0; }
.swatch.phase1, .series-phase1 { background: var(--s1); }
.swatch.phase2, .series-phase2 { background: var(--s2); }

.connectors { display: grid; gap: 8px; grid-template-columns: repeat(auto-fill, minmax(104px, 1fr)); }
.conn { border-radius: 8px; padding: 10px; background: var(--off-bg); border: 1px solid transparent; display: grid; gap: 4px; min-height: 92px; }
.conn .cid { font: 700 16px/1.1 var(--mono); }
.conn .cno { color: var(--muted); font-size: 11px; }
.conn .st { font-size: 13px; font-weight: 600; display: flex; align-items: center; gap: 5px; }
.conn .st::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.bar { height: 6px; border-radius: 3px; background: var(--surface); overflow: hidden; }
.bar i { display: block; height: 100%; background: currentColor; border-radius: 3px; }
.conn .pct { font-size: 12px; color: var(--ink-2); }
.conn.available { background: var(--ok-bg); } .conn.available .st { color: var(--ok); }
.conn.charging { background: var(--use-bg); } .conn.charging .st, .conn.charging .bar { color: var(--use); }
.conn.preparing, .conn.finishing { background: var(--warn-bg); }
.conn.preparing .st, .conn.finishing .st, .conn.preparing .bar, .conn.finishing .bar { color: var(--warn); }
.conn.reserved { background: var(--res-bg); } .conn.reserved .st { color: var(--res); }
.conn.offline { background: var(--off-bg); opacity: .8; } .conn.offline .st { color: var(--off); }
.conn.unknown { background: var(--off-bg); border-style: dashed; border-color: var(--line); } .conn.unknown .st { color: var(--off); }

/* KPI */
.kpis { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.kpi { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; }
.kpi b { display: block; font-size: 26px; line-height: 1.15; margin-top: 4px; }
.kpi span { color: var(--muted); font-size: 13px; }

/* charts */
.legend { display: flex; flex-wrap: wrap; gap: 14px; font-size: 13px; color: var(--ink-2); }
.chart { position: relative; width: 100%; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart .axis text { fill: var(--muted); font-size: 11px; font-family: var(--font); }
.chart .grid line { stroke: var(--line); stroke-width: 1; }
.chart .base { stroke: var(--ink-2); stroke-width: 1; }
.chart .hit { fill: transparent; }
.chart .hover-line { stroke: var(--ink-2); stroke-width: 1; stroke-dasharray: 3 3; }
.tip {
  position: absolute; pointer-events: none; z-index: 5; background: var(--ink); color: var(--bg);
  border-radius: 6px; padding: 6px 9px; font-size: 12px; line-height: 1.45; white-space: nowrap;
  transform: translate(-50%, calc(-100% - 10px));
}
.tip b { font-weight: 700; }
.grid2 { display: grid; gap: 20px; grid-template-columns: 1fr; }
@media (min-width: 900px) { .grid2 { grid-template-columns: 1fr 1fr; } }

.heat { display: grid; grid-template-columns: 36px repeat(24, minmax(0, 1fr)); gap: 2px; font-size: 11px; color: var(--muted); }
.heat .cell { aspect-ratio: 1 / 1; max-width: 100%; border-radius: 3px; position: relative; }
.heat .rowlab { display: flex; align-items: center; }
.heat .collab { text-align: center; }
.heat-scale { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--muted); margin-top: 10px; }
.heat-scale i { display: block; width: 120px; height: 8px; border-radius: 4px; }

/* tables */
.scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 13.5px; }
th, td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; font-size: 12px; position: sticky; top: 0; background: var(--surface); }
td.num, th.num { text-align: right; }
tbody tr:hover { background: var(--surface-2); }
.pill { display: inline-block; padding: 1px 8px; border-radius: 10px; font-size: 12px; font-weight: 600; }
.pill.available { background: var(--ok-bg); color: var(--ok); }
.pill.charging { background: var(--use-bg); color: var(--use); }
.pill.preparing, .pill.finishing { background: var(--warn-bg); color: var(--warn); }
.pill.reserved { background: var(--res-bg); color: var(--res); }
.pill.offline, .pill.unknown { background: var(--off-bg); color: var(--off); }
.pill.failed { background: var(--bad-bg); color: var(--bad); }

/* controls */
.controls { display: flex; flex-wrap: wrap; gap: 10px 14px; align-items: end; }
.controls label { display: grid; gap: 3px; font-size: 12px; color: var(--muted); }
select, button {
  font: inherit; font-size: 14px; color: var(--ink); background: var(--surface); border: 1px solid var(--line);
  border-radius: 6px; padding: 6px 10px; min-height: 34px;
}
button { cursor: pointer; background: var(--ink); color: var(--bg); border-color: var(--ink); font-weight: 600; }
button.ghost { background: var(--surface); color: var(--ink); border-color: var(--line); font-weight: 400; }
button:disabled { opacity: .45; cursor: default; }
.pager { display: flex; align-items: center; gap: 10px; margin-top: 12px; font-size: 13px; color: var(--muted); flex-wrap: wrap; }

.foot { color: var(--muted); font-size: 12.5px; border-top: 1px solid var(--line); padding-block: 18px; }
.empty { color: var(--muted); padding: 24px 0; text-align: center; }

@media (prefers-reduced-motion: no-preference) {
  .bar i { transition: width .4s ease; }
}

/* chat */
.chat-log { display: grid; gap: 10px; max-height: 65vh; overflow-y: auto; padding: 4px; }
.msg { max-width: min(760px, 92%); border-radius: 10px; padding: 9px 12px; background: var(--surface-2); border: 1px solid var(--line); }
.msg.mine { justify-self: end; background: var(--use-bg); border-color: transparent; }
.msg .meta { font-size: 12px; color: var(--muted); display: flex; gap: 8px; }
.msg .meta b { color: var(--ink); }
.msg pre { margin: 4px 0 0; white-space: pre-wrap; word-break: break-word; font: inherit; }
.compose { display: grid; gap: 8px; margin-top: 14px; }
textarea, input[type="password"] {
  font: inherit; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 6px;
  padding: 8px 10px; width: 100%;
}
textarea { min-height: 96px; resize: vertical; }
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.row > input { flex: 1 1 240px; }