$panel-item-border: 1px solid $border !default;

$panel-heading-background-color: $background !default;
$panel-heading-color: $text-strong !default;
$panel-heading-line-height: 1.25 !default;
$panel-heading-padding: 0.5em 0.75em !default;
$panel-heading-radius: $radius !default;
$panel-heading-size: 1.25em !default;
$panel-heading-weight: $weight-light !default;

$panel-tab-border-bottom: 1px solid $border !default;
$panel-tab-active-border-bottom-color: $link-active-border !default;
$panel-tab-active-color: $link-active !default;

$panel-list-item-color: $text !default;
$panel-list-item-hover-color: $link !default;

$panel-block-color: $text-strong !default;
$panel-block-hover-background-color: $background !default;
$panel-block-active-border-left-color: $link !default;
$panel-block-active-color: $link-active !default;
$panel-block-active-icon-color: $link !default;

$panel-icon-color: $text-light !default;

.sgds {
  &-panel {
    font-size: $size-normal;

    &:not(:last-child) {
      margin-bottom: 1.5rem;
    }
  }

  &-panel-heading,
  &-panel-tabs,
  &-panel-block {
    border-bottom: $panel-item-border;
    border-left: $panel-item-border;
    border-right: $panel-item-border;

    &:first-child {
      border-top: $panel-item-border;
    }
  }

  &-panel-heading {
    background-color: $panel-heading-background-color;
    border-radius: $panel-heading-radius $panel-heading-radius 0 0;
    color: $panel-heading-color;
    font-size: $panel-heading-size;
    font-weight: $panel-heading-weight;
    line-height: $panel-heading-line-height;
    padding: $panel-heading-padding;
  }

  &-panel-tabs {
    align-items: flex-end;
    display: flex;
    font-size: 0.875em;
    justify-content: center;

    a {
      border-bottom: $panel-tab-border-bottom;
      margin-bottom: -1px;
      padding: 0.5em;

      // Modifiers
      &.is-active {
        border-bottom-color: $panel-tab-active-border-bottom-color;
        color: $panel-tab-active-color;
      }
    }
  }

  &-panel-list {
    a {
      color: $panel-list-item-color;

      &:hover {
        color: $panel-list-item-hover-color;
      }
    }
  }

  &-panel-block {
    align-items: center;
    color: $panel-block-color;
    display: flex;
    justify-content: flex-start;
    padding: 0.5em 0.75em;

    input[type="checkbox"] {
      margin-right: 0.75em;
    }

    & > .control {
      flex-grow: 1;
      flex-shrink: 1;
      width: 100%;
    }

    &.is-wrapped {
      flex-wrap: wrap;
    }

    &.is-active {
      border-left-color: $panel-block-active-border-left-color;
      color: $panel-block-active-color;

      .sgds-panel-icon {
        color: $panel-block-active-icon-color;
      }
    }
  }

  a.sgds-panel-block,
  label.sgds-panel-block {
    cursor: pointer;

    &:hover {
      background-color: $panel-block-hover-background-color;
    }
  }

  &-panel-icon {
    @include fa(14px, 1em);

    color: $panel-icon-color;
    margin-right: 0.75em;

    .fa {
      font-size: inherit;
      line-height: inherit;
    }
  }
}