:root {
  color-scheme: light dark;
  --bg: #0f1115;
  --card: #1a1d24;
  --text: #e8e9ec;
  --muted: #9aa0ab;
  --accent: #ffb020;
  --border: #2a2e37;
  --error: #ff6b6b;
  --success: #5fd98a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.4;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  gap: 0.5rem;
}

.brand { color: var(--text); text-decoration: none; font-weight: 700; font-size: 1.1rem; }

nav { display: flex; gap: 0.9rem; align-items: center; flex-wrap: wrap; font-size: 0.95rem; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--accent); }
nav .who { color: var(--text); font-weight: 600; }

main { max-width: 900px; margin: 0 auto; padding: 1rem; }

h1 { font-size: 1.4rem; margin: 0.5rem 0 0.25rem; }
h2 { font-size: 1.1rem; }

.muted { color: var(--muted); }
.small { font-size: 0.8rem; }

.banner {
  border-color: var(--accent);
  background: rgba(255, 176, 32, 0.1);
}
.banner p { margin: 0.4rem 0 0; color: var(--text); }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
  margin: 1rem 0;
}
.card.narrow { max-width: 420px; }

form { display: flex; flex-direction: column; gap: 0.4rem; }
label { font-size: 0.85rem; color: var(--muted); margin-top: 0.5rem; }
input, select {
  background: #11141a;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.6rem 0.7rem;
  border-radius: 8px;
  font-size: 1rem;
}
.hint { font-size: 0.78rem; color: var(--muted); margin: 0.1rem 0 0; }

button {
  margin-top: 0.75rem;
  padding: 0.65rem 1rem;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #1a1206;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
}
button:hover { opacity: 0.9; }

.link-button {
  background: none;
  border: none;
  color: var(--error);
  font-weight: 400;
  padding: 0;
  margin: 0;
  text-decoration: underline;
  cursor: pointer;
  font-size: 0.85rem;
}

.error { color: var(--error); }
.success { color: var(--success); }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; margin-top: 0.5rem; font-size: 0.92rem; }
th, td { text-align: left; padding: 0.5rem 0.6rem; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; }
tr.me { background: rgba(255, 176, 32, 0.12); }
td.total { font-weight: 700; color: var(--accent); }

code {
  background: #11141a;
  padding: 0.15rem 0.4rem;
  border-radius: 6px;
  font-size: 0.85rem;
}

.qr {
  background: #fff;
  padding: 10px;
  border-radius: 8px;
  display: block;
}

/* --- charts --- */

.chart-card h2 { margin-top: 0; }

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin: 0.25rem 0 0.75rem;
  font-size: 0.82rem;
}
.legend-item { display: inline-flex; align-items: center; gap: 0.4rem; color: var(--text); }
.legend-swatch {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  flex: none;
}

.chart-wrap { overflow-x: auto; }
.line-chart { width: 100%; min-width: 480px; height: auto; display: block; }
.line-chart .gridline { stroke: var(--border); stroke-width: 1; }
.line-chart .axis-label { fill: var(--muted); font-size: 9px; font-variant-numeric: tabular-nums; }
.line-chart circle[tabindex]:focus-visible { outline: 1px solid var(--accent); outline-offset: 1px; }
.heatmap-svg rect[tabindex]:focus-visible { outline: 1px solid var(--accent); outline-offset: 1px; }

.heatmap-wrap { overflow-x: auto; display: flex; flex-direction: column; gap: 0.4rem; }
.heatmap-row { display: flex; align-items: center; gap: 0.6rem; }
.heatmap-name {
  flex: none;
  width: 7rem;
  font-size: 0.82rem;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.heatmap-svg { flex: none; display: block; }