/**
 * @license EUPL-1.2+
 * Copyright Gemeente Amsterdam
 */

@use "../../common/hyphenation" as *;
@use "../../common/resets" as *;
@use "../../common/text-rendering" as *;

.ams-table-of-contents {
  display: flex;
  flex-direction: column;
  font-family: var(--ams-table-of-contents-font-family);
  font-size: var(--ams-table-of-contents-font-size);
  font-weight: var(--ams-table-of-contents-font-weight);
  gap: var(--ams-table-of-contents-gap);
  line-height: var(--ams-table-of-contents-line-height);
}

.ams-table-of-contents__list {
  @include reset-ul;

  display: flex;
  flex-direction: column;
  gap: var(--ams-table-of-contents-list-gap);

  @include hyphenation;
  @include text-rendering;

  .ams-table-of-contents__list {
    padding-block-start: var(--ams-table-of-contents-list-list-padding-block-start);
    padding-inline-start: var(--ams-table-of-contents-list-list-padding-inline-start);
  }
}

.ams-table-of-contents__item {
  column-gap: var(--ams-table-of-contents-item-gap);
  display: grid;
  grid-template-columns: 1fr; /* The collapsible variant adds a leading column for the toggle button. */
}

.ams-table-of-contents__link {
  color: var(--ams-table-of-contents-link-color);
  min-inline-size: 0;
  outline-offset: var(--ams-table-of-contents-link-outline-offset);
  text-decoration-line: var(--ams-table-of-contents-link-text-decoration-line);
  text-decoration-thickness: var(--ams-table-of-contents-link-text-decoration-thickness);
  text-underline-offset: var(--ams-table-of-contents-link-text-underline-offset);

  &:hover {
    color: var(--ams-table-of-contents-link-hover-color);
    text-decoration-line: var(--ams-table-of-contents-link-hover-text-decoration-line);
  }

  &[aria-current="page"] {
    color: var(--ams-table-of-contents-link-current-color);
    font-weight: var(--ams-table-of-contents-link-current-font-weight);
  }
}

.ams-table-of-contents__button {
  color: var(--ams-table-of-contents-button-color);

  &:hover {
    background-color: transparent;
    color: var(--ams-table-of-contents-button-hover-color);
  }
}

.ams-table-of-contents__button svg {
  transition: none;

  @media (prefers-reduced-motion: no-preference) {
    transition: rotate var(--ams-table-of-contents-button-icon-transition-duration)
      var(--ams-table-of-contents-button-icon-transition-timing-function);
  }
}

.ams-table-of-contents__button[aria-expanded="true"] svg {
  rotate: -180deg;
}

.ams-table-of-contents__item--collapsed > .ams-table-of-contents__list {
  display: none;

  @media print {
    display: flex;
  }
}

.ams-table-of-contents--collapsible {
  --_ams-table-of-contents-button-column-inline-size: calc(1em * var(--ams-table-of-contents-line-height));

  .ams-table-of-contents__item {
    /* Add a leading column for the toggle button so labels align with and without one. */
    grid-template-columns: var(--_ams-table-of-contents-button-column-inline-size) 1fr;
  }

  .ams-table-of-contents__item > .ams-table-of-contents__list {
    grid-column: 2;
    padding-inline-start: 0; /* Overrides the nested-list rule. */
  }

  .ams-table-of-contents__link {
    grid-column: 2;
  }
}