/* Collapsible content — views/sections/collapsible_content.php. A centred column of native <details> rows
   (on the light secondary band by default): icon, title and a chevron that turns when the row is open,
   hairlines under the rows, the opened text indented under the title. Rows ease open where the browser
   can animate <details>. */

.rr-collapsible {
  max-width: 48rem;
  margin-inline: auto;
}

.rr-collapsible__item {
  border-bottom: 1px solid var(--color-border);
}

.rr-collapsible__summary {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 3.125rem;
  padding-block: 0.7rem;
  font-size: clamp(0.9375rem, 0.92rem + 0.1vw, 1rem);
  font-weight: 550;
  line-height: 1.35;
  list-style: none;
  cursor: pointer;
}

.rr-collapsible__summary::-webkit-details-marker {
  display: none;
}

.rr-collapsible__summary::marker {
  content: "";
}

.rr-collapsible__summary:focus-visible {
  border-radius: var(--radius-xs);
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.rr-collapsible__icon {
  display: grid;
  flex: none;
  place-items: center;
  width: 1.25rem;
  height: 1.25rem;
}

.rr-collapsible__icon .icon {
  width: 1.25rem;
  height: 1.25rem;
}

.rr-collapsible__title {
  flex: 1;
  min-width: 0;
}

.rr-collapsible__summary:hover .rr-collapsible__title {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.rr-collapsible__chevron {
  flex: none;
  width: 1rem;
  height: 1rem;
  transition: transform var(--dur-2) var(--ease-out);
}

.rr-collapsible__item[open] > .rr-collapsible__summary .rr-collapsible__chevron {
  transform: rotate(180deg);
}

/* The opened text lines up with the title, past the icon. */
.rr-collapsible__content {
  max-width: none;
  padding: 0 0 1.25rem 2rem;
  color: var(--color-text-muted);
  font-size: clamp(0.9375rem, 0.92rem + 0.1vw, 1rem);
  line-height: 1.7;
}

.rr-collapsible__content > :first-child {
  margin-top: 0;
}

.rr-collapsible__content :is(h2, h3, h4) {
  margin-top: 1.4em;
  margin-bottom: -0.5em;
  color: var(--color-text);
  font-size: var(--step-1);
}

.rr-collapsible__content strong {
  color: var(--color-text);
}

@supports selector(::details-content) {
  @media (prefers-reduced-motion: no-preference) {
    .rr-collapsible {
      interpolate-size: allow-keywords;
    }

    .rr-collapsible__item::details-content {
      height: 0;
      overflow: clip;
      transition: height var(--dur-3) var(--ease-out), content-visibility var(--dur-3) allow-discrete;
    }

    .rr-collapsible__item[open]::details-content {
      height: auto;
    }
  }
}