/* Dialog surfaces and backdrop */
.panel {
  width: min(22rem, calc(100vw - 2rem));
  padding: 1.5rem;
  border: 0;
  border-radius: 1rem;
  background: var(--bg);
  color: var(--text);
  max-height: calc(100dvh - 2rem);
  overflow: auto;
}
.panel::backdrop { background: rgb(0 0 0 / 0.45); }
.panel h2 { margin: 0 0 1rem; font-size: 1.25rem; }
.panel > .btn { width: 100%; margin-top: 1.25rem; }

/* Changelog history */
.changelog-panel { box-sizing: border-box; max-height: min(36rem, calc(100dvh - 2rem)); overflow: hidden; }
.changelog-panel[open] { display: flex; flex-direction: column; gap: 1rem; }
.changelog-header { flex: none; }
.changelog-header h2 { margin-bottom: 0.25rem; }
.changelog-history {
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 0.125rem 0.5rem 0.125rem 0.125rem;
}
.changelog-history:focus-visible { outline: 2px solid var(--head); outline-offset: 2px; border-radius: 0.5rem; }
.changelog-entry + .changelog-entry {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid color-mix(in srgb, var(--text) 16%, transparent);
}
.changelog-entry h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-variant-numeric: tabular-nums;
}
.changelog-entry ul { margin: 0; padding-left: 1.1rem; font-size: 0.875rem; line-height: 1.55; }
.changelog-entry li + li { margin-top: 0.35rem; }
.changelog-latest {
  padding: 0.125rem 0.5rem;
  border: 1px solid color-mix(in srgb, var(--head) 30%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--head) 10%, transparent);
  color: var(--head);
  font-size: 0.6875rem;
  font-weight: 600;
}
.changelog-panel > .btn { flex: none; margin-top: 0; }