/**
 * @file accordion.css
 *
 * Globale styling voor native <details>/<summary> accordeons.
 * Wordt overal toegepast op je site, ook binnen Rich Text Blocks.
 *
 * Gebruik in een Rich Text Block (CKEditor → Source mode):
 *
 *   <div class="nnn-accordion-group">
 *     <details>
 *       <summary>Kop van het item</summary>
 *       <p>De bijbehorende tekst die zichtbaar wordt bij uitklappen.</p>
 *     </details>
 *   </div>
 *
 * De groepswrapper centreert en beperkt de breedte voor betere leesbaarheid.
 */

/* ─── Algemene details/summary styling ────────────────────── */

details {
  background: var(--nnn-color-background);
  border: 1px solid var(--nnn-color-border);
  border-radius: var(--nnn-radius-md);
  margin-bottom: var(--nnn-space-sm);
  overflow: hidden;
  transition: border-color var(--nnn-transition-fast);
  /* Losse details ook smaller maken voor leesbaarheid. */
  max-width: var(--nnn-container-narrow);
}

details:hover {
  border-color: var(--nnn-color-primary);
}

details > summary {
  list-style: none;
  cursor: pointer;
  padding: 0.625rem 1rem;
  font-weight: 500;
  font-size: 1.05rem;
  line-height: 1.4;
  color: var(--nnn-color-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--nnn-space-md);
  transition: background-color var(--nnn-transition-fast);
  user-select: none;
}

details > summary::-webkit-details-marker {
  display: none;
}

details > summary::after {
  content: '';
  flex: 0 0 auto;
  width: 0.7rem;
  height: 0.7rem;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform var(--nnn-transition-normal);
}

details[open] > summary::after {
  transform: rotate(-135deg);
}

details > summary:hover {
  background-color: var(--nnn-color-background-alt);
}

details > summary:focus-visible {
  outline: 2px solid var(--nnn-color-primary);
  outline-offset: -2px;
}

/* ─── Headings binnen summary ─────────────────────────────── */
/*
 * Toegestaan en aanbevolen voor toegankelijkheid:
 *   <summary><h3>Kop</h3></summary>
 * Reset margins en laat het heading-element gewoon de tekstkleur/grootte
 * van summary erven, zodat de chevron netjes rechts blijft.
 */
.rich-text-block__content details > summary > :is(h2, h3, h4, h5, h6),
details > summary > :is(h2, h3, h4, h5, h6) {
  margin: 0;
  padding: 0;
  font-family: inherit;
  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1.3;
  color: inherit;
  flex: 1;
}

/* ─── Inhoud onder de summary ─────────────────────────────── */

details > *:not(summary) {
  padding-left: var(--nnn-space-lg);
  padding-right: var(--nnn-space-lg);
}

details > *:not(summary):first-of-type {
  padding-top: 0;
  margin-top: 0;
}

details > *:last-child {
  padding-bottom: var(--nnn-space-md);
  margin-bottom: 0;
}

/* ─── Groepering: smaller dan paginabreed ─────────────────── */

.nnn-accordion-group {
  display: flex;
  flex-direction: column;
  gap: var(--nnn-space-sm);
  max-width: var(--nnn-container-narrow);
  margin-inline: 0;
}

.nnn-accordion-group > details {
  margin-bottom: 0;
  /* Binnen de group neemt details de volledige groepsbreedte. */
  max-width: none;
}

/* ─── Reduced motion ──────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  details,
  details > summary,
  details > summary::after {
    transition: none;
  }
}