* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
  font-size: 15px;
  color: #222;
  background: #fff;
  max-width: 1140px;
  margin: 0 auto;
  padding: 1.5rem 1rem;
}

header { margin-bottom: 1.2rem; }
h1 { font-size: 1.7rem; font-weight: bold; }
.subtitle { color: #555; margin-top: 0.3rem; font-size: 0.93rem; line-height: 1.5; }

.tabs {
  display: flex;
  gap: 0.15rem;
  margin-bottom: 1rem;
  border-bottom: 2px solid #e0e0e0;
}

.tab {
  padding: 0.45rem 1.2rem;
  border: none;
  background: none;
  cursor: pointer;
  font-size: 0.95rem;
  color: #555;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  border-radius: 3px 3px 0 0;
  transition: color 0.12s;
}
.tab:hover { color: #0072B2; background: #f0f7ff; }
.tab.active { color: #0072B2; border-bottom-color: #0072B2; font-weight: 600; }

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
  margin-bottom: 0.8rem;
  font-size: 0.9rem;
  color: #444;
}
.controls label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  user-select: none;
}

.data-updated-at {
  margin: 0 0 0.9rem;
  font-size: 0.87rem;
  color: #666;
}

.benchmark-sources {
  margin-bottom: 1rem;
  padding: 0.85rem 1rem;
  background: #f8f8f8;
  border: 1px solid #e6e6e6;
  border-radius: 6px;
}

.benchmark-sources h2 {
  margin-bottom: 0.55rem;
  font-size: 0.98rem;
}

.benchmark-sources-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.6rem;
  list-style: none;
}

.benchmark-sources-list a {
  display: inline-block;
  padding: 0.22rem 0.5rem;
  border-radius: 999px;
  background: #eef6ff;
  color: #005b99;
  font-size: 0.86rem;
  text-decoration: none;
  transition: background 0.12s ease, color 0.12s ease;
}

.benchmark-sources-list a:hover {
  background: #dcecff;
  color: #004a7d;
}

.benchmark-sources-list .benchmark-missing {
  font-size: 0.86rem;
  color: #666;
}

.chart { width: 100%; margin-bottom: 1rem; }

.methodology {
  margin-top: 1.5rem;
  padding: 1rem 1.3rem;
  background: #f8f8f8;
  border-radius: 6px;
  border-left: 4px solid #0072B2;
}
.methodology h2 { font-size: 1rem; margin-bottom: 0.5rem; }
.methodology p { font-size: 0.87rem; color: #444; line-height: 1.65; margin-bottom: 0.5rem; }
.methodology a { color: #0072B2; text-decoration: none; }
.methodology a:hover { text-decoration: underline; }

.changelog {
  margin-top: 1rem;
  padding: 1rem 1.3rem;
  background: #f8f8f8;
  border-radius: 6px;
  border-left: 4px solid #888;
}
.changelog h2 { font-size: 1rem; margin-bottom: 0.65rem; }
.changelog-list {
  display: grid;
  gap: 0.45rem;
  list-style: none;
}
.changelog-list li {
  display: grid;
  grid-template-columns: 6.4rem 1fr;
  gap: 0.8rem;
  align-items: baseline;
  font-size: 0.87rem;
  line-height: 1.45;
  color: #444;
}
.changelog-list time {
  color: #666;
  font-variant-numeric: tabular-nums;
}
.changelog-list .changelog-empty {
  grid-template-columns: 1fr;
  color: #666;
}

#loading {
  text-align: center;
  padding: 3rem;
  color: #888;
  font-size: 0.95rem;
}

@media (max-width: 600px) {
  .tabs { flex-wrap: wrap; }
  .tab { padding: 0.35rem 0.75rem; font-size: 0.85rem; }
  .controls { gap: 0.8rem; font-size: 0.85rem; }
  .changelog-list li { grid-template-columns: 1fr; gap: 0.1rem; }
}