:root {
  color-scheme: light dark;
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #1c2026;
  --muted: #636b78;
  --border: #dde1e7;
  --accent: #2563eb;
  --accent-text: #ffffff;
  --danger: #b42318;
  --track: #e8ebf0;
  --highlight: #eef4ff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171c;
    --surface: #1d2128;
    --text: #e7eaee;
    --muted: #98a1ae;
    --border: #2e343d;
    --accent: #6ea0ff;
    --accent-text: #0d1320;
    --danger: #ff8a7a;
    --track: #2a3038;
    --highlight: #1b2740;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}

header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 24px;
  padding: 12px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.brand { font-weight: 700; }

header nav { display: flex; gap: 16px; flex: 1; }
header nav a { color: var(--muted); text-decoration: none; padding: 4px 0; }
header nav a.current { color: var(--text); border-bottom: 2px solid var(--accent); }

.signout { display: flex; align-items: center; gap: 12px; color: var(--muted); }

main { max-width: 960px; margin: 0 auto; padding: 16px; }

h1 { font-size: 1.6rem; margin: 8px 0 16px; }
h2 { font-size: 1.1rem; margin: 0 0 8px; display: flex; align-items: center; gap: 8px; }
h3 { font-size: 0.95rem; margin: 16px 0 8px; color: var(--muted); }

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

.muted { color: var(--muted); font-weight: 400; }

.cards { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 360px), 1fr)); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 16px;
}

.cards .card { margin-bottom: 0; }
.card.highlight { background: var(--highlight); border-color: var(--accent); }

.total { margin-left: auto; font-variant-numeric: tabular-nums; }

.swatch { width: 12px; height: 12px; flex: none; }

.usage { width: 100%; border-collapse: collapse; }
.usage th { text-align: left; font-weight: 500; padding: 4px 8px 4px 0; overflow-wrap: anywhere; }
.usage td { padding: 4px 0; }
.usage .bar-cell { width: 35%; }
.usage .time { text-align: right; white-space: nowrap; padding-left: 8px; font-variant-numeric: tabular-nums; }

.bar { display: block; width: 100%; height: 8px; background: var(--track); border-radius: 4px; }

.dates { display: flex; gap: 16px; margin-bottom: 16px; }

.row { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 12px; margin-bottom: 8px; }
.stack { display: grid; gap: 12px; }
.narrow { max-width: 320px; }

label { display: grid; gap: 4px; font-size: 0.85rem; color: var(--muted); }

input, select, button { font: inherit; }

input[type="text"], input[type="password"], select {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  min-width: 0;
}

input[type="color"] { width: 48px; height: 38px; padding: 2px; border: 1px solid var(--border); border-radius: 6px; background: var(--bg); }

button {
  padding: 8px 14px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: var(--accent);
  color: var(--accent-text);
  cursor: pointer;
}

button.quiet { background: transparent; color: var(--accent); border-color: var(--border); }
button.danger { color: var(--danger); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.notice {
  padding: 10px 14px;
  border: 1px solid var(--danger);
  border-radius: 6px;
  color: var(--danger);
}

.code {
  font: 700 2rem/1.2 ui-monospace, "Cascadia Mono", Consolas, monospace;
  letter-spacing: 0.1em;
  margin: 8px 0;
}

.grow { flex: 1; min-width: 200px; }
.limit { border-top: 1px solid var(--border); padding-top: 8px; align-items: center; }
h2.section { margin: 24px 0 12px; font-size: 1.3rem; }
input[type="number"] { padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; background: var(--bg); color: var(--text); width: 110px; }

.scroll { overflow-x: auto; }
.timeline { display: block; min-width: 640px; width: 100%; height: auto; }
.timeline .tick { stroke: var(--border); stroke-width: 1; }
.timeline .hour { fill: var(--muted); font-size: 11px; text-anchor: middle; }
.timeline .lane { fill: var(--text); font-size: 12px; }
.usage .bar-cell.wide { width: 60%; }
.usage .time.left { text-align: left; padding: 4px 12px 4px 0; color: var(--muted); }
h2 a { color: inherit; }