:root {
  --bg: #f6f7fb;
  --card: #ffffff;
  --text: #1c2233;
  --muted: #6b7385;
  --line: #e2e5ee;
  --accent: #3b6ef5;
  --danger: #d64545;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11141c;
    --card: #1a1f2b;
    --text: #e8ebf3;
    --muted: #98a0b3;
    --line: #2a3140;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 15px/1.45 -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}
header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 24px;
  background: var(--card);
  border-bottom: 1px solid var(--line);
}
header h1 { font-size: 18px; margin: 0; flex: 1; }
main { display: grid; grid-template-columns: 280px 1fr; gap: 24px; padding: 24px; }
@media (max-width: 760px) { main { grid-template-columns: 1fr; padding: 16px; } }
h2 { font-size: 20px; margin: 0; }
h3 { font-size: 15px; margin: 24px 0 8px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); }
.muted { color: var(--muted); }
.mono { font-family: ui-monospace, Menlo, monospace; font-size: 12px; }
.error { margin: 16px 24px 0; padding: 10px 14px; border-radius: 10px; background: #fde8e8; color: #9b1c1c; }
.row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.row h2 { flex: 1; }
.center { text-align: center; padding: 48px 24px; }
aside { display: flex; flex-direction: column; gap: 8px; }
.detail { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 20px 24px; min-width: 0; overflow-x: auto; }

button {
  font: inherit;
  font-weight: 600;
  border: 0;
  border-radius: 10px;
  padding: 7px 14px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}
button.secondary { background: var(--line); color: var(--text); }
button.danger { background: transparent; color: var(--danger); }
button:hover { filter: brightness(0.95); }
.list-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--line);
  font-weight: 400;
}
.list-item.selected { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent) inset; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { font-size: 12px; color: var(--muted); font-weight: 600; }
td.actions { white-space: nowrap; text-align: right; }
tr.inactive td { opacity: 0.5; }
.swatch { display: inline-block; width: 14px; height: 14px; border-radius: 50%; }

dialog { border: 1px solid var(--line); border-radius: 16px; background: var(--card); color: var(--text); width: min(520px, 92vw); padding: 20px 24px; }
dialog::backdrop { background: rgba(0, 0, 0, 0.4); }
dialog h3 { margin-top: 0; }
.field { display: flex; flex-direction: column; gap: 4px; margin: 10px 0; }
.field > span { font-size: 13px; font-weight: 600; }
.field input[type='text'], .field input[type='number'] {
  font: inherit;
  padding: 7px 10px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--text);
}
.checks { display: flex; flex-wrap: wrap; gap: 6px 14px; }
.checks label { display: flex; align-items: center; gap: 4px; font-weight: 400; }

/* Mascot beside the title */
header h1 img { vertical-align: middle; margin-right: 8px; }

/* ---- Reporting / Analytics / Errors ---- */
nav.tabs { display: flex; gap: 4px; padding: 0 24px; background: var(--card); border-bottom: 1px solid var(--line); overflow-x: auto; }
nav.tabs button { background: none; color: var(--muted); border: 0; border-bottom: 2px solid transparent; border-radius: 0; padding: 10px 12px; font-weight: 600; }
nav.tabs button[aria-current='page'] { color: var(--text); border-bottom-color: var(--accent); }
main.wide { display: block; }
.report { display: flex; flex-direction: column; gap: 16px; max-width: 1200px; }
.report > .row { display: flex; align-items: center; gap: 12px; }
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 12px; }
.tile { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; display: flex; flex-direction: column; gap: 2px; }
.tile strong { font-size: 24px; }
.tile span, .tile small { font-size: 13px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; overflow-x: auto; }
.card h3 { margin-top: 0; }
.charts { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 12px; }
@media (max-width: 420px) { .charts { grid-template-columns: 1fr; } }
.chart { width: 100%; height: auto; display: block; }
.chart .axis { stroke: var(--line); }
.chart .tick { fill: var(--muted); font-size: 11px; }
.chart .bar { fill: var(--accent); }
.chart .bar.alt, .key.alt { fill: #1baa7c; background: #1baa7c; }
.chart .bar.warn, .key.warn { fill: var(--danger); background: var(--danger); }
.legend { display: flex; gap: 14px; font-size: 13px; color: var(--muted); margin: 6px 0 0; }
.key { display: inline-block; width: 10px; height: 10px; border-radius: 2px; background: var(--accent); margin-right: 6px; }
.small { font-size: 13px; }
pre.stack { white-space: pre-wrap; font-size: 12px; max-height: 240px; overflow: auto; background: var(--bg); padding: 8px; border-radius: 8px; }
details summary { cursor: pointer; }
meter { width: 120px; }