:root {
  color-scheme: light;
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.4;
  --bg: #f5f7fb;
  --panel: #ffffff;
  --border: #d7dfea;
  --text: #1f2937;
  --muted: #5c667a;
  --accent: #2563eb;
  --accent-soft: #dbeafe;
  --danger: #b91c1c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

.page {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 20px 48px;
}

.page-header {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
  margin-bottom: 12px;
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 2rem;
  margin-bottom: 6px;
}

.subtitle,
.generated-at,
.summary-label,
#chart-description {
  color: var(--muted);
}

.header-meta {
  min-width: 220px;
  display: grid;
  gap: 12px;
}

.metric-tab-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.metric-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: nowrap;
}

.metric-tab {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 14px;
  background: var(--panel);
  color: var(--text);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.metric-tab[aria-selected="true"] {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}

.outlier-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-weight: 600;
}

.outlier-toggle[hidden] {
  display: none;
}

.control {
  display: grid;
  gap: 6px;
  font-weight: 600;
}

select {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  background: var(--panel);
  font: inherit;
}

.summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.summary-card,
.chart-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.04);
}

.summary-card strong {
  display: block;
  margin-top: 8px;
  font-size: 1.75rem;
}

.chart-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: end;
  margin-bottom: 12px;
}

.status {
  margin-bottom: 12px;
  color: var(--muted);
}

.status.error {
  color: var(--danger);
}

.contributors {
  display: grid;
  gap: 12px;
}

.contributor-row {
  display: grid;
  gap: 8px;
}

.contributor-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.95rem;
}

.contributor-login {
  font-weight: 600;
}

.contributor-count {
  color: var(--muted);
}

.bar-track {
  width: 100%;
  height: 14px;
  border-radius: 999px;
  background: var(--accent-soft);
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #60a5fa, var(--accent));
}

@media (max-width: 720px) {
  .page-header,
  .chart-header {
    grid-template-columns: 1fr;
    display: grid;
    align-items: start;
  }

  .summary {
    grid-template-columns: 1fr;
  }
}