:root {
  color-scheme: light dark;
  --fg: #16181d;
  --muted: #646b78;
  --bg: #f4f5f7;
  --card: #ffffff;
  --line: #e1e4e9;
  --ok: #1a7f37;
  --ok-bg: #e6f4ea;
  --bad: #c62828;
  --bad-bg: #fdecea;
  --accent: #2563eb;
  --rain: rgba(37, 99, 235, 0.18);
  --warn: #9a6700;
  --warn-bg: #fff4d6;
  --off: #8a919c;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e8eaee;
    --muted: #9aa1ad;
    --bg: #0f1115;
    --card: #181b21;
    --line: #2a2f38;
    --ok: #4ade80;
    --ok-bg: #12301d;
    --bad: #f87171;
    --bad-bg: #3a1515;
    --accent: #60a5fa;
    --rain: rgba(96, 165, 250, 0.22);
    --warn: #fbbf24;
    --warn-bg: #3a2e10;
    --off: #6b7280;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font: 15px/1.4 -apple-system, system-ui, sans-serif;
  color: var(--fg);
  background: var(--bg);
  font-variant-numeric: tabular-nums;
}
.wrap { max-width: 1200px; margin: 0 auto; padding: 16px; }
.muted { color: var(--muted); }
h2 { font-size: 15px; margin: 0; }

.banner {
  border-radius: 12px;
  padding: 14px 16px;
  margin-bottom: 16px;
  background: var(--card);
  border: 1px solid var(--line);
}
.banner.ok { background: var(--ok-bg); border-color: transparent; }
.banner.bad { background: var(--bad-bg); border-color: transparent; }
.banner-row { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 12px; }
.state { font-weight: 700; font-size: 20px; letter-spacing: 0.04em; }
.banner.ok .state { color: var(--ok); }
.banner.bad .state { color: var(--bad); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chips:not(:empty) { margin-top: 10px; }
.chip {
  font-size: 13px;
  padding: 2px 10px;
  border-radius: 999px;
  color: #fff;
  background: var(--bad);
}

.grid { display: grid; gap: 16px; }
@media (min-width: 900px) { .grid { grid-template-columns: 1fr 1fr; } }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
  min-width: 0;
}
.card-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.chart { width: 100%; min-height: 240px; }
.empty { margin: 8px 0 0; }

.toggle { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.toggle button {
  font: inherit;
  font-size: 13px;
  padding: 3px 12px;
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}
.toggle button[aria-pressed="true"] { background: var(--accent); color: #fff; }

.footer { margin-top: 20px; font-size: 13px; display: flex; flex-wrap: wrap; gap: 4px 16px; }

/* uPlot inherits text color; keep axes legible in dark mode. */
.u-legend { color: var(--fg); font-size: 13px; }

a { color: var(--accent); }

/* Settings page */
.narrow { max-width: 760px; }
.narrow .card { margin-bottom: 16px; }
.page-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 12px; margin-bottom: 16px; }
.page-head h1 { font-size: 20px; margin: 0; }
.page-head a { margin-left: auto; }
.notice { border-radius: 8px; padding: 8px 12px; margin: 0 0 12px; }
.notice.bad { background: var(--bad-bg); color: var(--bad); }
.notice.warn { background: var(--warn-bg); color: var(--warn); }
.hint { font-size: 13px; margin: 8px 0 0; }

.rule { padding: 12px 0; border-top: 1px solid var(--line); }
.rule:first-child { border-top: 0; padding-top: 0; }
.rule-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin-bottom: 8px; }
.rule-head .check { margin-right: auto; }
.status { font-size: 12px; font-weight: 600; padding: 1px 8px; border-radius: 999px; color: var(--card); background: var(--off); }
.status.ok { background: var(--ok); }
.status.triggered { background: var(--bad); }
.status.learning { background: var(--warn); }

.fields { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 10px 16px; }
.fields label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
label.check { flex-direction: row; align-items: center; gap: 8px; font-size: 15px; color: var(--fg); }
input[type="number"], input[type="email"], input[type="text"] {
  font: inherit;
  width: 9em;
  padding: 5px 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  color: var(--fg);
}
input[type="email"] { width: auto; flex: 1; min-width: 0; }
#place { width: 16em; max-width: 100%; }
input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--accent); }

button {
  font: inherit;
  padding: 6px 16px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}
button.secondary { background: transparent; color: var(--accent); }
button.small { font-size: 13px; padding: 2px 10px; }
button:disabled { opacity: 0.6; cursor: default; }

.save-bar {
  position: sticky;
  bottom: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  margin-bottom: 16px;
  background: var(--bg);
}
.list { list-style: none; margin: 0; padding: 0; }
.list li { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 6px 0; border-top: 1px solid var(--line); }
.list li:first-child { border-top: 0; }
.list li span:first-child { min-width: 0; overflow-wrap: anywhere; }
.inline { display: flex; gap: 8px; margin-top: 10px; }