/* Shared history navigator styles. Themed via CSS custom properties so it
 * adopts each experiment's palette. Falls back to sensible defaults.
 *   --hn-fg, --hn-muted, --hn-line, --hn-panel, --hn-accent
 */
.histnav {
  --_fg: var(--hn-fg, var(--text, var(--ink, #e6edf3)));
  --_muted: var(--hn-muted, var(--text-secondary, var(--muted, #9aa7b4)));
  --_line: var(--hn-line, var(--rule, var(--line, #2a3441)));
  --_panel: var(--hn-panel, var(--panel2, var(--panel, rgba(127,127,127,.08))));
  --_accent: var(--hn-accent, var(--accent, #58a6ff));
  margin: 14px 0;
  font: inherit;
}
.histnav-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.histnav-btn {
  appearance: none;
  cursor: pointer;
  border: 1px solid var(--_line);
  background: var(--_panel);
  color: var(--_fg);
  border-radius: 8px;
  padding: 7px 11px;
  font: inherit;
  font-size: 0.85em;
  line-height: 1;
  transition: border-color .12s ease, color .12s ease, opacity .12s ease;
}
.histnav-btn:hover:not(:disabled) {
  border-color: var(--_accent);
  color: var(--_accent);
}
.histnav-btn:disabled {
  opacity: 0.4;
  cursor: default;
}
.histnav-latest {
  font-size: 0.78em;
  letter-spacing: 0.02em;
}
.histnav-select {
  flex: 1 1 auto;
  min-width: 0;
  cursor: pointer;
  border: 1px solid var(--_line);
  background: var(--_panel);
  color: var(--_fg);
  border-radius: 8px;
  padding: 7px 11px;
  font: inherit;
  font-size: 0.85em;
}
.histnav-select:focus-visible,
.histnav-btn:focus-visible {
  outline: 2px solid var(--_accent);
  outline-offset: 1px;
}
.histnav.is-past .histnav-select {
  border-color: var(--_accent);
}
.histnav-banner {
  margin-top: 10px;
  padding: 8px 12px;
  border: 1px solid var(--_accent);
  border-radius: 8px;
  background: color-mix(in srgb, var(--_accent) 12%, transparent);
  color: var(--_fg);
  font-size: 0.8em;
  line-height: 1.45;
}
@media (max-width: 480px) {
  .histnav-latest { order: 3; }
}