@import 'variables';
@import 'icon';

.c-tabs {
  display: flex;
  flex-direction: column;

  &--bottom {
    flex-direction: column-reverse;
  }

  &--left {
    flex-direction: row;
  }

  &--right {
    flex-direction: row-reverse;
  }

  .c-tabs__pane-container {
    flex-grow: 1;
  }

  [role='tab'] {
    outline: none;
  }

  &--top,
  &--bottom,
  &--left,
  &--right {
    border: 2px solid transparent;
  }

  // tabs nav
  &--left .c-tabs__nav-container,
  &--right .c-tabs__nav-container {
    padding: $--tabs-vertical-nav-padding 0;
  }

  // tabs nav::after, "border-bottom"
  .c-tabs__nav-container::after {
    width: 100%;
    height: $--tabs-border-width;
  }

  &--top .c-tabs__nav-container::after,
  &--bottom .c-tabs__nav-container::after {
    left: 0;
  }

  &--top .c-tabs__nav-container::after,
  &--card .c-tabs__nav-container::after {
    bottom: 0;
  }

  &--bottom .c-tabs__nav-container::after {
    top: 0;
  }

  &--left .c-tabs__nav-container::after,
  &--right .c-tabs__nav-container::after {
    top: 0;
    width: $--tabs-border-width;
    height: 100%;
  }

  &--left .c-tabs__nav-container::after {
    right: 0;
  }

  &--right .c-tabs__nav-container::after {
    left: 0;
  }

  .c-tabs__nav {
    display: flex;
  }

  // tabs nav container
  &--left .c-tabs__nav,
  &--right .c-tabs__nav {
    flex-direction: column;
  }

  // tabs nav item
  &--top .c-tabs__item:not(:last-child),
  &--bottom .c-tabs__item:not(:last-child) {
    margin-right: $--tabs-gap;
  }

  // tabs bar
  .c-tabs__nav-bar {
    position: absolute;
    z-index: 1;
    background-color: $--primary-color;
    transition: transition(transform);
  }

  &--top .c-tabs__nav-bar,
  &--bottom .c-tabs__nav-bar {
    left: 0;
    height: $--tabs-bar-width;
  }

  &--top .c-tabs__nav-bar {
    bottom: 0;
  }

  &--bottom .c-tabs__nav-bar {
    top: 0;
  }

  &--left .c-tabs__nav-bar,
  &--right .c-tabs__nav-bar {
    top: $--tabs-vertical-nav-padding;
    width: $--tabs-bar-width;
  }

  &--left .c-tabs__nav-bar {
    right: 0;
  }

  &--right .c-tabs__nav-bar {
    left: 0;
  }

  .add-btn-container {
    position: absolute;
    top: 50%;
    right: 3px;
    padding: 2px;
    transform: translateY(-50%);
    cursor: pointer;
  }

  .add-btn-container button {
    position: relative;
    display: block;
    width: 15px;
    height: 15px;
    color: $--tabs-add-btn-color;
    background: transparent;
    border: transparent;
    outline: none;
    cursor: pointer;

    &:hover {
      color: $--primary-color;
    }

    &:focus-visible {
      outline: 3px solid $--primary-color;
      outline-offset: 2px;
    }
  }

  .add-btn-container button::before {
    position: absolute;
    top: 7px;
    left: 1px;
    width: 13px;
    height: 1px;
    background-color: currentColor;
    content: '';
  }

  .add-btn-container button::after {
    position: absolute;
    bottom: 1px;
    left: 7px;
    width: 1px;
    height: 13px;
    background-color: currentColor;
    content: '';
  }
}

.c-tabs__nav-container {
  position: relative;
  overflow: hidden;

  &::after {
    position: absolute;

    background-color: $--tabs-nav-border-color;
    content: '';
  }

  .c-tabs__nav-list {
    max-width: 900px;
    overflow-x: auto;
  }
}

.c-tabs__item {
  display: flex;
  align-items: center;
  padding: $--tabs-default-padding;

  color: $--tabs-text-color;
  line-height: $--tabs-line-height;

  white-space: nowrap;

  cursor: pointer;

  transition: transition(color);

  &-active {
    color: $--primary-color;
  }

  &-disabled {
    color: $--tabs-disabled-color;
    cursor: no-drop;
    pointer-events: none;
  }

  &:not(&-disabled):hover {
    color: $--primary-color;
  }

  .c-icon--svg svg {
    width: $--tabs-icon-size;
    height: $--tabs-icon-size;
    fill: $--icon-color;

    &:hover {
      fill: $--primary-color;
    }
  }

  .c-icon--svg:focus-visible {
    outline: 3px solid $--primary-color;
  }
}

.c-tabs--card .c-icon--close-tab {
  margin-left: 8px;
  font-size: $--base-font-size;
}

.c-tabs--card .c-icon--close-tab:hover {
  color: $--primary-color;
}

.c-tabs--card .c-icon--close-tab:focus {
  outline: none;
}

.c-tabs--card .c-tabs__item {
  $border: $--tabs-border-width solid $--tabs-nav-border-color;
  margin-right: 0;
  padding: $--tabs--card-padding;

  border-top: $border;
  border-right: $border;

  &-closable {
    padding-right: 12px;
  }

  &:first-child {
    border-left: $border;
    border-top-left-radius: $--tabs--card-border-radius;
  }

  &:last-child {
    border-top-right-radius: $--tabs--card-border-radius;
  }

  &-active {
    position: relative;
    z-index: 1;
  }

  &-active::after {
    position: absolute;

    bottom: 0;
    left: 0;
    width: 100%;
    height: $--tabs-border-width;
    background-color: $--tabs-nav-bg-color;
    content: '';
  }
}

// .c-tabs__item-active:focus {
.c-tabs__item-active:focus-visible {
  outline: 3px solid $--primary-color;
  outline-offset: -3px;
}

.c-tabs--card .c-tabs__item-active:focus-visible::after {
  z-index: -1;
}