.lib-accordion {
  display: grid;
  gap: var(--lib-space-4);
}

.lib-accordion__item {
  display: block;
  overflow: clip;
  border-color: color-mix(in srgb, var(--lib-accordion-accent-color, var(--lib-border-brand)) 10%, var(--lib-border-default));
  transition: border-color var(--lib-transition-base), box-shadow var(--lib-transition-base);
}

.lib-accordion__item:hover,
.lib-accordion__item.is-open {
  border-color: color-mix(in srgb, var(--lib-accordion-accent-color, var(--lib-border-brand)) 26%, var(--lib-border-default));
  transform: none;
}

.lib-accordion__heading {
  margin: 0;
}

.lib-accordion__trigger {
  display: flex;
  width: 100%;
  min-height: 4.5rem;
  align-items: center;
  justify-content: space-between;
  gap: var(--lib-space-4);
  padding: var(--lib-space-5) var(--lib-space-6);
  border: 0;
  color: var(--lib-text-primary);
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition: color var(--lib-transition-base), background var(--lib-transition-base);
}

.lib-accordion__trigger:hover {
  color: var(--lib-accordion-accent-color-strong, var(--lib-action-primary-hover));
  background: color-mix(in srgb, var(--lib-accordion-accent-color, var(--lib-text-brand)) 4%, transparent);
}

.lib-accordion__trigger:focus-visible {
  position: relative;
  z-index: 1;
  outline: 3px solid color-mix(in srgb, var(--lib-border-accent) 35%, transparent);
  outline-offset: -3px;
}

.lib-accordion__label {
  display: block;
  font-family: var(--lib-font-heading);
  font-size: var(--lib-font-size-lead);
  font-weight: 800;
  line-height: 1.3;
}

.lib-accordion__icon {
  position: relative;
  display: inline-flex;
  width: 2rem;
  height: 2rem;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  border: 1px solid color-mix(in srgb, var(--lib-accordion-accent-color, var(--lib-border-brand)) 18%, transparent);
  border-radius: var(--lib-radius-sm);
  color: var(--lib-accordion-accent-color, var(--lib-icon-brand));
  background: color-mix(in srgb, var(--lib-accordion-accent-color, var(--lib-surface-brand-primary)) 8%, var(--lib-surface-elevated));
  transition: transform var(--lib-transition-base), background var(--lib-transition-base);
}

.lib-accordion__icon::before,
.lib-accordion__icon::after {
  position: absolute;
  width: 0.8rem;
  height: 2px;
  border-radius: var(--lib-radius-pill);
  background: currentColor;
  content: "";
  transition: transform var(--lib-transition-base);
}

.lib-accordion__icon::after {
  transform: rotate(90deg);
}

.lib-accordion__item.is-open .lib-accordion__icon {
  color: var(--lib-action-primary-text);
  background: var(--lib-accordion-accent-color, var(--lib-action-primary-bg));
}

.lib-accordion__item.is-open .lib-accordion__icon::after {
  transform: rotate(0deg);
}

/* Chevron variant — opt-in, default stays the +/− cross above. Apply
   `lib-accordion--chevron` on the `.lib-accordion` wrapper (cascades to
   every item's icon). No image asset: a rotated two-border corner. */
.lib-accordion--chevron .lib-accordion__icon::before,
.lib-accordion--chevron .lib-accordion__icon::after {
  position: static;
  width: var(--lib-space-2);
  height: var(--lib-space-2);
  border-radius: 0;
  background: none;
  border-right: calc(var(--lib-space-hairline) * 2) solid currentColor;
  border-bottom: calc(var(--lib-space-hairline) * 2) solid currentColor;
  transform: rotate(45deg);
}

.lib-accordion--chevron .lib-accordion__icon::after {
  content: none;
}

.lib-accordion--chevron .lib-accordion__item.is-open .lib-accordion__icon::before {
  transform: rotate(225deg);
}

.lib-accordion__panel {
  padding: 0 var(--lib-space-6) var(--lib-space-6);
}

.lib-accordion__text {
  max-width: var(--lib-content-measure);
  margin: 0;
  color: var(--lib-text-secondary);
}

@media (max-width: 540px) {
  .lib-accordion {
    gap: var(--lib-space-3);
  }

  .lib-accordion__trigger {
    min-height: 4rem;
    gap: var(--lib-space-3);
    padding: var(--lib-space-4);
  }

  .lib-accordion__label {
    font-size: var(--lib-font-size-base);
  }

  .lib-accordion__panel {
    padding: 0 var(--lib-space-4) var(--lib-space-4);
  }
}

@media (prefers-reduced-motion: reduce) {
  .lib-accordion__item,
  .lib-accordion__trigger,
  .lib-accordion__icon,
  .lib-accordion__icon::before,
  .lib-accordion__icon::after {
    transition: none;
  }
}