//
// Copyright IBM Corp. 2016, 2018
//
// This source code is licensed under the Apache-2.0 license found in the
// LICENSE file in the root directory of this source tree.
//

@import '../../globals/scss/vars';
@import '../../globals/scss/helper-mixins';
@import '../../globals/scss/layout';
@import '../../globals/scss/vendor/@carbon/elements/scss/import-once/import-once';
@import '../../globals/scss/css--reset';

/// Accordion styles
/// @access private
/// @group accordion
@mixin accordion {
  .#{$prefix}--accordion {
    @include reset;

    list-style: none;
    width: 100%;
  }

  .#{$prefix}--accordion__item {
    transition: all $duration--fast-02 motion(standard, productive);
    border-top: 1px solid $ui-03;
    overflow: visible;

    &:last-child {
      border-bottom: 1px solid $ui-03;
    }
  }

  .#{$prefix}--accordion__heading {
    @include button-reset;
    color: $text-01;
    display: flex;
    align-items: center;
    justify-content: $accordion-justify-content;
    cursor: pointer;
    padding: rem(6px) 0;
    flex-direction: $accordion-flex-direction;
    position: relative;
    width: 100%;
    margin: 0;
    transition: background-color motion(standard, productive) $duration--fast-02;

    &:hover:before,
    &:focus:before {
      content: '';
      position: absolute;
      top: -1px;
      left: 0;
      width: 100%;
      height: calc(100% + 2px);
    }

    &:hover:before {
      background-color: $hover-ui;
    }

    &:focus {
      outline: none;
    }

    &:focus:before {
      @include focus-outline('outline-compat');
    }
  }

  .#{$prefix}--accordion__arrow {
    @include focus-outline('reset');
    // Without flex basis and flex shrink being set here, our icon width can go
    // <16px and cause the icon to render in the incorrect artboard size
    flex: 0 0 1rem;
    width: 1rem;
    height: 1rem;
    margin: $accordion-arrow-margin;
    fill: $ui-05;
    // TODO: RTL rotate(180deg);
    transform: rotate(90deg);
    transition: all $duration--fast-02 motion(standard, productive);
  }

  .#{$prefix}--accordion__title {
    @include type-style('body-long-01');

    margin: $accordion-title-margin;
    width: 100%;
    text-align: left;
    z-index: 0;
  }

  .#{$prefix}--accordion__content {
    // Transition property for when the accordion closes
    transition: height motion(standard, productive) $duration--fast-02,
      padding motion(standard, productive) $duration--fast-02;
    padding-left: $carbon--spacing-05;

    padding-right: 25%;
    height: 0;
    visibility: hidden;
    opacity: 0;

    @include carbon--breakpoint-down('md') {
      padding-right: $carbon--spacing-09;
    }

    p {
      @include type-style('body-long-01');
    }
  }

  .#{$prefix}--accordion__item--active {
    overflow: visible;

    .#{$prefix}--accordion__content {
      padding-bottom: $carbon--spacing-06;
      padding-top: $spacing-xs;
      height: auto;
      visibility: visible;
      opacity: 1;
      // Transition property for when the accordion opens
      transition: height motion(entrance, productive) $duration--fast-02,
        padding-top motion(entrance, productive) $duration--fast-02,
        padding-bottom motion(entrance, productive) $duration--fast-02;
    }

    .#{$prefix}--accordion__arrow {
      /*rtl:ignore*/
      transform: rotate(-90deg);
      fill: $ui-05;
    }
  }

  // Skeleton state
  .#{$prefix}--accordion.#{$prefix}--skeleton .#{$prefix}--accordion__heading,
  .#{$prefix}--accordion.#{$prefix}--skeleton .#{$prefix}--accordion__button {
    cursor: default;
  }

  .#{$prefix}--accordion.#{$prefix}--skeleton .#{$prefix}--accordion__arrow {
    pointer-events: none;
    fill: $ui-05;
    cursor: default;

    &:hover,
    &:focus,
    &:active {
      border: none;
      outline: none;
      cursor: default;
    }
  }

  .#{$prefix}--skeleton
    .#{$prefix}--accordion__heading:focus
    .#{$prefix}--accordion__arrow {
    border: none;
    outline: none;
    cursor: default;
  }

  .#{$prefix}--accordion__title.#{$prefix}--skeleton__text {
    margin-bottom: 0;
  }
}

@include exports('accordion') {
  @include accordion;
}