.database-history {
  --history-surface: var(--page-background-color);
  --history-text: var(--page-foreground-color);
  --history-muted: var(--page-secondary-foreground-color);
  --history-border: var(--separator-color);
  --history-accent: var(--primary-color);
  --history-added: #18794e;
  --history-removed: #c0362c;
  --history-modified: #9a6700;
  color: var(--history-text);
}

html.dark-mode .database-history {
  --history-added: #65d6a2;
  --history-removed: #ff8a83;
  --history-modified: #f2cc60;
}

.database-history a { color: var(--history-accent); }
.database-history .history-status,
.database-history .release,
.database-history .summary-card,
.database-history .nucleus-history-tool,
.database-history .latest-change,
.database-history details.nucleus {
  border: 1px solid var(--history-border);
  border-radius: var(--border-radius-medium);
  background: var(--history-surface);
  box-shadow: 0 2px 10px var(--shadow-color);
}
.database-history .history-status { padding: .9rem 1rem; }
.database-history .history-status.error { color: var(--history-removed); }
.database-history .nucleus-history-tool {
  margin: 1rem 0 1.4rem;
  padding: 1rem;
}
.database-history .nucleus-history-tool > h2 { margin: 0 0 .25rem; }
.database-history .nucleus-history-tool > p { margin: .25rem 0 .85rem; }
.database-history .history-search-row {
  display: flex;
  align-items: stretch;
  gap: .55rem;
}
.database-history .history-search-row .history-filter { flex: 1 1 auto; }
.database-history .history-search-row button {
  flex: 0 0 auto;
  border: 1px solid var(--history-accent);
  border-radius: var(--border-radius-small);
  padding: .65rem 1rem;
  color: var(--page-background-color);
  background: var(--history-accent);
  font: inherit;
  font-weight: 650;
  cursor: pointer;
}
.database-history .history-search-row button:disabled,
.database-history .history-filter:disabled {
  cursor: wait;
  opacity: .6;
}
.database-history .history-filter-options {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem 1.1rem;
  margin-top: .65rem;
}
.database-history .history-checkbox {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  cursor: pointer;
  font-weight: 600;
}
.database-history .history-checkbox input {
  width: 1rem;
  height: 1rem;
  margin: 0;
  accent-color: var(--history-accent);
}
.database-history .history-checkbox:has(input:disabled) {
  cursor: wait;
  opacity: .6;
}
.database-history #nucleus-history-status { margin: .55rem 0 0; }
.database-history #nucleus-history-status.error { color: var(--history-removed); }
.database-history #nucleus-history-result {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--history-border);
}
.database-history .nucleus-history-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: .5rem 1rem;
}
.database-history .nucleus-history-header h2 { margin: 0; }
.database-history .latest-change-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: .65rem;
  margin: .85rem 0 1rem;
}
.database-history .latest-change {
  display: grid;
  gap: .2rem;
  padding: .7rem .8rem;
  box-shadow: none;
}
.database-history .latest-change small { overflow-wrap: anywhere; }
.database-history .nucleus-history-note { margin: 0 0 .9rem; }
.database-history .nucleus-history-timeline { display: grid; gap: .8rem; }
.database-history .nucleus-history-release { box-shadow: none; }
.database-history .nucleus-history-release h3 {
  margin: 0;
  font-size: 1rem;
  overflow-wrap: anywhere;
}
.database-history .nucleus-report-link { margin: .7rem 0 0; }
.database-history .release-list { display: grid; gap: 1rem; margin-top: 1rem; }
.database-history details.year-group {
  overflow: hidden;
  border: 1px solid var(--history-border);
  border-radius: var(--border-radius-medium);
  background: var(--history-surface);
}
.database-history details.year-group > summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: .8rem 1rem;
  background: var(--fragment-background);
  font-size: 1.15rem;
  font-weight: 700;
}
.database-history details.year-group[open] > summary {
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--history-border);
}
.database-history .year-releases {
  display: grid;
  gap: 1rem;
  padding: 0 1rem 1rem;
}
.database-history .release { padding: 1rem; }
.database-history .release-header {
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  align-items: start;
}
.database-history .release h2 {
  margin: 0;
  font-size: 1.1rem;
  overflow-wrap: anywhere;
}
.database-history .release-meta,
.database-history .muted { color: var(--history-muted); }
.database-history .release-meta { margin: .25rem 0 .8rem; }
.database-history .release-meta strong { color: var(--history-text); }
.database-history .metrics,
.database-history .badges { display: flex; flex-wrap: wrap; gap: .45rem; }
.database-history .overall-metrics { margin-bottom: .65rem; }
.database-history .metric,
.database-history .badge {
  display: inline-flex;
  gap: .25rem;
  border: 1px solid var(--history-border);
  border-radius: 999px;
  padding: .15rem .55rem;
  font-size: .86rem;
  white-space: nowrap;
}
.database-history .added { color: var(--history-added); }
.database-history .removed { color: var(--history-removed); }
.database-history .modified { color: var(--history-modified); }
.database-history .source-title { margin: 0 0 .55rem; font-size: 1rem; }
.database-history .source-breakdown { display: grid; gap: .5rem; }
.database-history .source-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem;
  padding: .5rem .65rem;
  border: 1px solid var(--history-border);
  border-radius: var(--border-radius-small);
  background: var(--fragment-background);
}
.database-history .source-name {
  flex: 0 0 4.6rem;
  color: var(--history-accent);
}
.database-history .summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: .8rem;
  margin: 1rem 0 1.4rem;
}
.database-history #source-summary { margin: 0 0 1.4rem; }
.database-history .summary-card { padding: .8rem 1rem; }
.database-history .summary-card h2 { margin: 0 0 .35rem; font-size: 1rem; }
.database-history .summary-total { font-size: 1.45rem; font-weight: 700; }
.database-history .filter-label { display: block; font-weight: 650; margin-bottom: .35rem; }
.database-history .history-filter {
  box-sizing: border-box;
  width: 100%;
  padding: .7rem .8rem;
  border: 1px solid var(--history-border);
  border-radius: var(--border-radius-small);
  color: var(--history-text);
  background: var(--history-surface);
  font: inherit;
}
.database-history details { border-top: 1px solid var(--history-border); }
.database-history details:first-child { border-top: 0; }
.database-history details.year-group:first-child { border-top: 1px solid var(--history-border); }
.database-history details > summary { cursor: pointer; padding: .65rem .75rem; }
.database-history details.nucleus { margin: .8rem 0; overflow: hidden; }
.database-history details.nucleus > summary { padding: .85rem 1rem; font-weight: 700; }
.database-history .dataset {
  margin: 0 .8rem .8rem;
  border: 1px solid var(--history-border);
  border-radius: var(--border-radius-small);
}
.database-history .dataset > summary { font-weight: 620; }
.database-history .detail-body { padding: 0 .75rem .75rem; }
.database-history .change-group {
  margin-top: .55rem;
  border: 1px solid var(--history-border);
  border-radius: var(--border-radius-small);
}
.database-history .change-list { margin: 0; padding: 0 1rem .7rem 2rem; }
.database-history .change-list li { margin: .25rem 0; overflow-wrap: anywhere; }
.database-history .field-list { color: var(--history-muted); font-size: .88rem; }
.database-history [hidden] { display: none !important; }

@media (max-width: 620px) {
  .database-history .history-search-row { display: grid; }
  .database-history .history-search-row button { width: 100%; }
  .database-history .release-header { display: block; }
  .database-history .release-header a { display: inline-block; margin-top: .6rem; }
  .database-history .source-name { flex-basis: 100%; }
}