:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --ink: #1d1f21;
  --ink-2: #4b5157;
  --ink-3: #767c83;
  --line: #e4e1da;
  --accent: #2458a6;
  --s1: #2458a6;
  --s2: #c2410c;
  --s3: #b91c1c;
  --s4: #0f766e;
  --ok: #15803d;
  --warn: #b45309;
  --off: #6b7280;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171a;
    --surface: #1c1f23;
    --ink: #e8e6e1;
    --ink-2: #b8bcc2;
    --ink-3: #8b9097;
    --line: #2c3036;
    --accent: #8ab4f8;
    --s1: #8ab4f8;
    --s2: #fb923c;
    --s3: #f87171;
    --s4: #2dd4bf;
    --ok: #4ade80;
    --warn: #fbbf24;
    --off: #9ca3af;
  }
}

* { box-sizing: border-box; }
html { color-scheme: light dark; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.65 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-underline-offset: 3px; }

.page { max-width: 760px; margin: 0 auto; padding: 64px 24px 40px; }
.page.wide { max-width: 980px; }

h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.2; }
h1 { font-size: 2.6rem; margin: 0 0 6px; letter-spacing: -0.01em; }
h2 { font-size: 1.35rem; margin: 48px 0 14px; padding-bottom: 6px; border-bottom: 1px solid var(--line); }
h3 { font-size: 1.1rem; margin: 0 0 8px; }
p { margin: 0 0 14px; }

.role { font-size: 1.15rem; margin: 0; }
.affil { color: var(--ink-2); margin: 2px 0 0; }
.muted { color: var(--ink-3); }

.links { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 18px; }
.links a { font-weight: 600; text-decoration: none; }
.links a:hover { text-decoration: underline; }

.tags { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.tags li { border: 1px solid var(--line); background: var(--surface); border-radius: 999px; padding: 3px 12px; font-size: 0.92rem; }

.pubs { padding-left: 1.2em; margin: 0; }
.pubs li { margin-bottom: 16px; }
.pubs span { display: block; }
.pubs .title { font-family: var(--serif); font-size: 1.08rem; }
.pubs .authors, .pubs .venue { color: var(--ink-2); font-size: 0.95rem; }

.foot { max-width: 760px; margin: 0 auto; padding: 20px 24px 40px; color: var(--ink-3); font-size: 0.85rem; }

/* Live rig page */
.crumb { font-size: 0.9rem; color: var(--ink-3); margin-bottom: 28px; }
.status-line { margin-top: 16px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.pill { padding: 3px 12px; border-radius: 999px; font-size: 0.9rem; font-weight: 600; background: var(--surface); border: 1px solid var(--line); color: var(--off); }
.pill[data-state="charging"] { color: var(--ok); border-color: currentColor; }
.pill[data-state="discharging"] { color: var(--warn); border-color: currentColor; }
.pill[data-state="idle"] { color: var(--accent); border-color: currentColor; }

.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; margin-top: 32px; }
.tile { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; display: flex; flex-direction: column; }
.tile .label { font-size: 0.8rem; color: var(--ink-3); text-transform: uppercase; letter-spacing: 0.04em; }
.tile .value { font-size: 1.55rem; font-weight: 600; font-variant-numeric: tabular-nums; margin-top: 2px; }
.tile .hint { font-size: 0.8rem; color: var(--ink-3); }

.legend { list-style: none; display: flex; flex-wrap: wrap; gap: 18px; padding: 0; margin: 0 0 8px; font-size: 0.88rem; color: var(--ink-2); }
.legend li::before { content: ""; display: inline-block; width: 16px; height: 3px; border-radius: 2px; margin-right: 6px; vertical-align: middle; }
.legend .s1::before { background: var(--s1); }
.legend .s2::before { background: var(--s2); }
.legend .s3::before { background: var(--s3); }
.legend .s4::before { background: var(--s4); }

.chart { display: block; width: 100%; height: auto; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; }
.chart .grid { stroke: var(--line); stroke-width: 1; }
.chart .zero { stroke: var(--ink-3); stroke-width: 1; stroke-dasharray: 4 4; }
.chart .axis { fill: var(--ink-3); font: 12px var(--sans); }
.chart .empty { fill: var(--ink-3); font: 14px var(--sans); }
.chart .line { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.chart .s1 { stroke: var(--s1); }
.chart .s2 { stroke: var(--s2); }
.chart .s3 { stroke: var(--s3); }
.chart .s4 { stroke: var(--s4); }

.about p { color: var(--ink-2); }

@media (max-width: 560px) {
  .page { padding-top: 40px; }
  h1 { font-size: 2rem; }
  .tile .value { font-size: 1.3rem; }
}