/**
 * @file
 * Vertical tabs module.
 *
 * Replaces /core/misc/vertical-tabs.css.
 */

@import "../base/media-queries.pcss.css";

/**
 * Main wrapper of vertical tabs.
 * This wrapper div is added by JavaScript.
 */
.vertical-tabs {
  box-sizing: border-box;
  margin-block: var(--vertical-tabs-margin-vertical);
  border-block-start: 1px solid transparent; /* Hide the pane wrapper clearfix's height. */

  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }
}

/**
 * Vertical tabs menu.
 */
.vertical-tabs__menu {
  position: relative;
  display: block;
  float: inline-start;
  inline-size: var(--vertical-tabs-menu-width);
  margin: 0;
  padding-block-start: var(--vertical-tabs-menu-item-shadow-extraspace);
  list-style: none;
  color: var(--admin-color-text);
}

/**
 * Vertical tabs menu item.
 */
.vertical-tabs__menu-item {
  overflow: hidden; /* Necessary to cut off the end of the focus state. */
  margin-block: var(--vertical-tabs-menu-item--top-margin);
  padding-block: var(--vertical-tabs-menu-item-shadow-extraspace);

  /**
   * The (gray) lines that visually separate the vertical tab menu items.
   */
  &::before,
  &::after {
    position: absolute;
    z-index: 1; /* Keep above the link hover background so the line stays visible. */
    display: block;
    inline-size: 100%;
    margin-block-start: calc(var(--vertical-tabs-menu-separator-size) * -1);
    border-block-start: var(--vertical-tabs-menu-separator-size) solid var(--admin-color-border);
  }

  /**
   * Masking line that hides the gray separator below the active item — without
   * it the active item shows a lightgray line at its bottom-start corner.
   */
  &::after {
    z-index: 2;
    /* Must match the active item's background so the separator is hidden: that
       item is --admin-color-bg-surface in light but blends into the canvas in
       dark (see the .is-selected dark override below), so mirror it here. */
    border-color: var(--admin-color-bg-surface);

    .gin--dark-mode & {
      border-color: var(--admin-color-bg);
    }
  }

  /* Only show a separator after an unhidden menu item. */
  &:not(.vertical-tab--hidden) ~ &::before {
    content: "";
  }

  &:focus {
    outline: 0;
    box-shadow: none;
  }

  &.is-selected {
    width: calc(100% + 1px); /* Cover up the border of the vertical tabs pane. */
  }

  &.is-selected::before,
  &:not(.vertical-tab--hidden) ~ &.is-selected::before {
    content: normal;
  }

  /* Show the white masking line for the selected menu item. */
  &.is-selected::after {
    content: "";
  }
}

/**
 * Anchor link inside the vertical tabs menu item.
 */
.vertical-tabs__menu-link {
  position: relative;
  display: block;
  margin-block-start: calc(var(--vertical-tabs-border-size) * -1);
  padding-block: var(--admin-space-s);
  padding-inline: calc(var(--admin-space-l) - var(--vertical-tabs-menu-link--active-border-size)) var(--admin-space-s);
  text-decoration: none;
  color: var(--admin-color-text);
  border: var(--vertical-tabs-border-size) solid transparent;
  border-block-width: var(--vertical-tabs-border-size);
  border-inline-width: var(--vertical-tabs-menu-link--active-border-size) 0;
  border-start-start-radius: var(--vertical-tabs-border-radius);
  border-start-end-radius: 0;
  border-end-end-radius: 0;
  border-end-start-radius: var(--vertical-tabs-border-radius);

  &:focus {
    outline-offset: calc(-1 * var(--outline-size, 0px));
  }

  &:hover {
    text-decoration: none;
    color: var(--admin-color-primary);

    &::before {
      background: var(--admin-color-bg-item-hover);
    }
  }

  &::before {
    position: absolute;
    z-index: 0; /* Below the menu-item separator lines. */
    inset-block: calc(var(--vertical-tabs-border-size) * -1);
    inset-inline: calc(var(--vertical-tabs-menu-link--active-border-size) * -1) 0;
    content: "";
    pointer-events: none;
    background-clip: padding-box;
  }

  .gin--dark-mode & {
    color: var(--admin-color-text);
  }

  .vertical-tabs__menu-item.is-selected & {
    z-index: 3; /* Above the white masking line that hides the gray separator. */
    width: calc(100% + var(--outline-size)); /* Larger width will intentionally cut off the right focus line. */
    color: var(--admin-color-primary);
    text-decoration-style: var(--admin-link-decoration-style);
    border-block-color: var(--vertical-tabs-border-color);
    border-inline-color: transparent;
    background-color: var(--admin-color-bg-surface);
    box-shadow: var(--vertical-tabs-shadow);

    &:hover {
      color: var(--admin-color-primary);
      background-color: var(--admin-color-bg-item-hover);

      &::before {
        background: var(--admin-color-bg-item-hover);
      }
    }

    &::before {
      z-index: 1; /* Blue active-tab indicator above the green focus border. */
      border-color: var(--admin-color-primary);
      border-inline-start: var(--vertical-tabs-menu-link--active-border-size) solid var(--vertical-tabs-menu-link--active-border-color);
      border-start-start-radius: var(--admin-radius-2xs);
      border-start-end-radius: 0;
      border-end-end-radius: 0;
      border-end-start-radius: var(--admin-radius-2xs);

      &:hover {
        border-color: var(--admin-color-primary-hover);
      }

      &:active {
        border-color: var(--admin-color-primary-active);
      }

      @media (forced-colors: active) {
        border-inline-start: var(--vertical-tabs-menu-link--active-border-size) solid canvastext;
      }
    }

    &:hover::before {
      background: none;
    }

    .gin--dark-mode & {
      border-color: var(--admin-color-border);
      background: var(--admin-color-bg);
    }
  }

  @media (forced-colors: active) {
    &:not(.is-selected *) {
      margin-inline-start: var(--vertical-tabs-menu-link--active-border-size);
      border-width: 0;
    }
  }
}

.vertical-tabs__menu-link-content {
  position: relative;
  z-index: 1; /* Keep text above the pseudo element that paints the hover background. */
}

/**
 * Details summary in vertical tabs menu link and in the summary of the details.
 */
.vertical-tabs__menu-link-summary {
  display: block;
  color: var(--admin-color-text-soft);
  font-size: var(--admin-font-size-s);
  font-weight: normal;

  .gin--dark-mode & {
    color: var(--admin-color-text-soft);
  }
}

/**
 * Wrapper of vertical tabs panes.
 */
.vertical-tabs__items {
  box-sizing: border-box;
  margin-block: var(--vertical-tabs-margin-vertical);
  color: var(--admin-color-text);
  border: var(--vertical-tabs-border);
  border-radius: var(--admin-radius-m);
  background-color: var(--admin-color-bg-surface);
  box-shadow: var(--vertical-tabs-shadow);

  .gin--dark-mode & {
    border-color: var(--admin-color-border);
    background: var(--admin-color-bg);
  }

  @media (--admin-large) {
    border-start-start-radius: 0;
  }
}

/* This modifier is added by JavaScript (this is inherited from Drupal core). */
.vertical-tabs__panes {
  position: relative;
  z-index: 1; /* Above the vertical tabs menu. */
  inset-block-start: -1px;
  margin-block: 0;

  &::after {
    display: block; /* Clearfix so the pane wrapper is at least as tall as the menu. */
    clear: both;
    content: "";
  }

  .vertical-tabs & {
    margin-inline-start: var(--vertical-tabs-menu-width);
    border-start-start-radius: 0;

    &:dir(rtl) {
      border-start-end-radius: var(--vertical-tabs-border-radius);
    }
  }
}

/**
 * The actual vertical tabs pane.
 *
 * This is a gin-details element which in this case is also vertical-tabs__item.
 */
.vertical-tabs__item {
  /* Render on top of the border of vertical-tabs__items. */
  margin-block: calc(var(--vertical-tabs-border-size) * -1) 0;
  margin-inline: calc(var(--vertical-tabs-border-size) * -1);
  border-radius: 0;

  &.first {
    border-start-start-radius: var(--details-accordion-border-size-radius);
    border-start-end-radius: var(--details-accordion-border-size-radius);
  }

  &.last {
    margin-block-end: calc(var(--vertical-tabs-border-size) * -1);
    border-end-start-radius: var(--details-accordion-border-size-radius);
    border-end-end-radius: var(--details-accordion-border-size-radius);
  }

  .js .vertical-tabs & {
    float: inline-start;
    overflow: visible;
    width: 100%;
    margin: 0;
    border: 0;

    &.first,
    &.last {
      border-radius: 0;
    }

    > summary {
      display: none;
    }
  }

  .gin--dark-mode & {
    background: none;
  }

  @media (--admin-wider) {
    border-start-end-radius: var(--admin-radius-m);
    border-end-end-radius: var(--admin-radius-m);
    border-end-start-radius: var(--admin-radius-m);

    & ~ .vertical-tabs__item {
      border-start-start-radius: var(--admin-radius-m);
    }
  }

  @media (--admin-large) {
    .gin-details__summary {
      padding-inline-start: var(--admin-space-2xl);

      &::before {
        inset-inline-start: var(--admin-space-m);
      }
    }
  }
}

.vertical-tabs__menu-item-title {
  font-weight: var(--admin-font-weight-bold);
}

[open] > .gin-details__summary--vertical-tabs-item:not(:focus, :active)::after {
  border-inline-start-width: 5px;
}