//
// Copyright IBM Corp. 2016, 2023
//
// This source code is licensed under the Apache-2.0 license found in the
// LICENSE file in the root directory of this source tree.
//

//-----------------------------
// Tabs
//-----------------------------

@use 'vars' as *;
@use '../button/tokens' as button;
@use '../tooltip';
@use '../../config' as *;
@use '../../theme' as *;
@use '../../colors' as *;
@use '../../type' as *;
@use '../../breakpoint' as *;
@use '../../spacing' as *;
@use '../../motion' as *;
@use '../../layer' as *;
@use '../../layer/layer-tokens';
@use '../../utilities/focus-outline' as *;
@use '../../utilities/rotate' as *;
@use '../../utilities/box-shadow' as *;
@use '../../utilities/component-reset';
@use '../../utilities/component-tokens' as *;
@use '../../utilities/custom-property';
@use '../../utilities/skeleton' as *;
@use '../../utilities/visually-hidden' as *;
@use '../../utilities/button-reset';
@use '../../utilities/high-contrast-mode' as *;
@use '../../utilities/convert';
@use '../../utilities/layout';
@use '../../utilities/update_fields_on_layer' as *;

/// Tabs styles
/// @access public
/// @group tabs
@mixin tabs {
  .#{$prefix}--tabs,
  .#{$prefix}--tab-content {
    @include layout.use('density', $default: 'normal');
  }

  .#{$prefix}--tabs.#{$prefix}--tabs--tall,
  .#{$prefix}--tabs.#{$prefix}--tabs--contained.#{$prefix}--tabs--tall {
    @include layout.use('size', $min: 'lg', $max: 'xl', $default: 'xl');
  }

  .#{$prefix}--tabs {
    @include reset;
    @include type-style('body-compact-01');
    @include layout.use('size', $min: 'sm', $max: 'lg', $default: 'md');

    position: relative;
    display: flex;
    block-size: auto;
    color: $text-primary;
    inline-size: 100%;
    max-block-size: custom-property.get-var('layout-size-height-xl');
    min-block-size: layout.size('height');
    overflow-x: hidden;

    &.#{$prefix}--tabs--contained {
      @include layout.use('size', $min: 'sm', $max: 'xl', $default: 'lg');
    }

    .#{$prefix}--tab--list {
      display: flex;
      inline-size: auto;
      overflow-x: auto;
      scroll-behavior: smooth;
      scrollbar-width: none;
      will-change: scroll-position;

      &::-webkit-scrollbar {
        display: none;
      }
    }

    &.#{$prefix}--tabs--vertical {
      background: $layer;
      box-shadow: inset -1px 0 $border-subtle;
      grid-column: span 2;
      max-block-size: none;

      @include breakpoint(lg) {
        grid-column: span 4;
      }

      .#{$prefix}--tab--list {
        overflow: visible auto;
        flex-direction: column;
        inline-size: 100%;
      }

      .#{$prefix}--tab--list-gradient_bottom {
        position: absolute;
        background: linear-gradient(to bottom, transparent, $layer);
        block-size: $spacing-10;
        inset-block-end: 0;
        inset-inline: 0;
        pointer-events: none;
      }

      .#{$prefix}--tab--list-gradient_top {
        position: absolute;
        background: linear-gradient(to top, transparent, $layer);
        block-size: $spacing-10;
        inset-block-start: 0;
        inset-inline: 0;
        pointer-events: none;
      }
    }

    .#{$prefix}--tabs__nav {
      @include component-reset.reset;

      display: flex;
    }

    //-----------------------------
    // Overflow Nav Buttons
    //-----------------------------
    .#{$prefix}--tab--overflow-nav-button {
      @include button-reset.reset;

      display: flex;
      flex-shrink: 0;
      align-items: center;
      justify-content: center;
      background-color: $background;
      inline-size: $spacing-08;

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

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

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

    .#{$prefix}--tab--overflow-nav-button--hidden {
      display: none;
    }

    &.#{$prefix}--tabs--contained .#{$prefix}--tab--overflow-nav-button {
      margin: 0;
      background-color: $layer-accent;
      inline-size: $spacing-09;

      &:hover {
        background-color: $layer-accent-hover;
      }

      &:active {
        background-color: $layer-accent-active;
      }
    }

    .#{$prefix}--tab--overflow-nav-button svg {
      z-index: 2;
      fill: $icon-primary;

      &:active,
      &:hover {
        fill: $icon-primary;
      }
    }

    .#{$prefix}--tab--overflow-nav-button--next {
      position: relative;
      inset-block: 0;
      inset-inline-end: 0;
    }

    .#{$prefix}--tab--overflow-nav-button--next::before {
      position: absolute;
      z-index: 1;
      block-size: 100%;
      content: '';
      inline-size: $spacing-03;
      inset-inline-start: -$spacing-03;
    }

    &:not(.#{$prefix}--tabs--contained) {
      .#{$prefix}--tab--overflow-nav-button--next::before {
        background: linear-gradient(
          to right,
          rgba(255, 255, 255, 0),
          $background
        );
      }
      .#{$prefix}--tab--overflow-nav-button--previous::before {
        background: linear-gradient(
          to left,
          rgba(255, 255, 255, 0),
          $background
        );
      }
    }

    .#{$prefix}--tab--overflow-nav-button--previous {
      position: relative;
      z-index: 1;
      inset-block: 0;
      inset-inline-start: 0;
    }

    .#{$prefix}--tab--overflow-nav-button--previous::before {
      position: absolute;
      z-index: 1;
      block-size: 100%;
      content: '';
      inline-size: $spacing-03;
      inset-inline-end: -$spacing-03;
    }

    .#{$prefix}--tabs--light .#{$prefix}--tabs__overflow-indicator--left {
      background-image: linear-gradient(
        to left,
        rgba(255, 255, 255, 0),
        $layer
      );
    }

    .#{$prefix}--tabs--light .#{$prefix}--tabs__overflow-indicator--right {
      background-image: linear-gradient(
        to right,
        rgba(255, 255, 255, 0),
        $layer
      );
    }

    &.#{$prefix}--tabs--contained .#{$prefix}--tabs__overflow-indicator--left {
      background-image: linear-gradient(
        to left,
        rgba(255, 255, 255, 0),
        $layer-accent
      );
    }

    &.#{$prefix}--tabs--contained .#{$prefix}--tabs__overflow-indicator--right {
      background-image: linear-gradient(
        to right,
        rgba(255, 255, 255, 0),
        $layer-accent
      );
    }

    // Safari-only media query
    // won't appear correctly with CSS custom properties
    // see: code snippet and modal overflow indicators
    @supports (hanging-punctuation: first) and (font: -apple-system-body) and
      (-webkit-appearance: none) {
      .#{$prefix}--tabs__overflow-indicator--left {
        background-image: linear-gradient(
          to left,
          rgba($background, 0),
          $background
        );
      }

      .#{$prefix}--tabs__overflow-indicator--right {
        background-image: linear-gradient(
          to right,
          rgba($background, 0),
          $background
        );
      }

      &.#{$prefix}--tabs--contained
        .#{$prefix}--tabs__overflow-indicator--left {
        background-image: linear-gradient(
          to left,
          rgba($layer-accent, 0),
          $layer-accent
        );
      }

      &.#{$prefix}--tabs--contained
        .#{$prefix}--tabs__overflow-indicator--right {
        background-image: linear-gradient(
          to right,
          rgba($layer-accent, 0),
          $layer-accent
        );
      }
    }

    //-----------------------------
    // Wrapper
    //-----------------------------
    .#{$prefix}--tabs__nav-item-label-wrapper {
      display: flex;
    }

    &:not(.#{$prefix}--tabs--contained)
      .#{$prefix}--tabs__nav-item-label-wrapper {
      position: relative;
      inset-block-start: convert.to-rem(1px);
    }

    //-----------------------------
    // Item
    //-----------------------------
    .#{$prefix}--tabs__nav-item {
      @include reset;

      position: relative;
      display: flex;
      flex: 1 0 auto;
      padding: 0;
      cursor: pointer;
      transition: background-color $duration-fast-01
        motion(standard, productive);
    }

    .#{$prefix}--tabs__nav-item + .#{$prefix}--tabs__nav-item {
      margin-inline-start: convert.to-rem(1px);
    }

    &.#{$prefix}--tabs--contained .#{$prefix}--tabs__nav-item {
      background-color: $layer-accent;
      // Draws the border without affecting the inner-content
      box-shadow: convert.to-rem(-1px) 0 0 0 $border-strong;
      margin-inline-start: 0;
    }

    &.#{$prefix}--tabs--vertical .#{$prefix}--tabs__nav-item {
      flex: none;
      background-color: $layer-01;
      block-size: $spacing-10;
      border-block-end: 1px solid $border-subtle;
      border-inline-end: 1px solid $border-subtle;
      box-shadow: inset 3px 0 0 0 $border-subtle;
      inline-size: 100%;
      margin-inline-start: 0;
    }

    &.#{$prefix}--tabs--contained:not(.#{$prefix}--tabs--vertical)
      .#{$prefix}--tabs__nav-item--selected
      + div
      + .#{$prefix}--tabs__nav-item {
      box-shadow: convert.to-rem(-1px) 0 0 0 transparent;
    }

    .#{$prefix}--tabs__nav-item .#{$prefix}--tabs__nav-link {
      transition:
        color $duration-fast-01 motion(standard, productive),
        border-bottom-color $duration-fast-01 motion(standard, productive),
        outline $duration-fast-01 motion(standard, productive);
    }

    &.#{$prefix}--tabs--dismissable .#{$prefix}--tabs__nav-link {
      padding-inline-end: $spacing-08;
    }

    &.#{$prefix}--tabs--dismissable.#{$prefix}--tabs--contained
      .#{$prefix}--tabs__nav-link {
      padding-inline-end: calc($spacing-09 - 1px);
    }

    //-----------------------------
    // Icon
    //-----------------------------

    .#{$prefix}--tabs__nav-item--close {
      position: relative;
      display: flex;
      align-items: center;
      inset-inline-start: calc(-#{$spacing-04} - 1px);
      margin-inline-start: calc(-#{$spacing-06} + 1px);
    }

    &:not(.#{$prefix}--tabs--contained)
      .#{$prefix}--tabs__nav-item--close--hidden {
      @include visually-hidden;

      position: static;
      inline-size: convert.to-rem(3px);
    }

    &.#{$prefix}--tabs--contained.#{$prefix}--tabs--full-width
      .#{$prefix}--tabs__nav-item--close--hidden {
      display: none;
    }

    .#{$prefix}--tabs__nav-item--close-icon {
      @include button-reset.reset();

      block-size: convert.to-rem(24px);
      inline-size: convert.to-rem(24px);
      padding-block: $spacing-02;
      padding-inline: $spacing-02;
      pointer-events: auto;

      svg {
        block-size: convert.to-rem(16px);
        fill: $text-secondary;
        inline-size: convert.to-rem(16px);
      }

      svg:hover {
        fill: $icon-primary;
      }

      &:hover {
        background-color: $layer-hover;
      }

      &:focus,
      &:active {
        @include focus-outline('outline');
      }
    }

    .#{$prefix}--tabs__nav-item:hover
      + .#{$prefix}--tabs__nav-item--close
      .#{$prefix}--tabs__nav-item--close-icon
      svg {
      fill: $icon-primary;
    }

    .#{$prefix}--tabs__nav-item--close-icon--selected {
      svg {
        fill: $icon-primary;
      }
    }

    .#{$prefix}--tabs__nav-item:hover
      + .#{$prefix}--tabs__nav-item--close
      .#{$prefix}--tabs__nav-item--close-icon--disabled,
    .#{$prefix}--tabs__nav-item--close-icon--disabled,
    .#{$prefix}--tabs__nav-item--close-icon--disabled:hover {
      background-color: inherit;
      cursor: not-allowed;

      svg {
        // Note: $icon-disabled maps to the same color as $tab-text-disabled, but in high contrast mode, $icon-disabled
        // maps to the system-defined "GrayText" color, which is better for high contrast mode support.
        fill: $icon-disabled;
      }

      &:focus,
      &:active {
        @include focus-outline('reset');
      }
    }

    .#{$prefix}--tabs__nav-item--icon {
      display: flex;
      align-items: center;
      padding-inline-start: $spacing-03;
    }

    .#{$prefix}--tabs__nav-item--icon-left {
      display: flex;
      align-items: center;
      margin-block-start: -2px;
      padding-inline-end: $spacing-03;
    }

    &.#{$prefix}--tabs--contained .#{$prefix}--tabs__nav-item--icon {
      padding-inline-start: layout.density('padding-inline');
    }

    //-----------------------------
    // Link
    //-----------------------------
    .#{$prefix}--tabs__nav-link {
      @include button-reset.reset($width: false);
      @include focus-outline('reset');
      @include type-style('body-compact-01');

      overflow: hidden;
      border-block-end: $tab-underline-color;
      color: $text-secondary;
      padding-inline: layout.density('padding-inline');
      text-align: start;
      text-decoration: none;
      text-overflow: ellipsis;
      transition:
        border $duration-fast-01 motion(standard, productive),
        outline $duration-fast-01 motion(standard, productive);
      white-space: nowrap;

      &:focus,
      &:active {
        @include focus-outline('outline');
      }
    }

    &.#{$prefix}--tabs--contained:not(.#{$prefix}--tabs--vertical)
      .#{$prefix}--tabs__nav-link {
      border-block-end: 0;
    }

    &.#{$prefix}--tabs--contained:not(.#{$prefix}--tabs--tall)
      .#{$prefix}--tabs__nav-item-label {
      // height - vertical padding
      line-height: calc(#{convert.to-rem(48px)} - (#{$spacing-03} * 2));
    }

    &.#{$prefix}--tabs--contained .#{$prefix}--tabs__nav-item-secondary-label {
      @include type-style('label-01');

      min-block-size: convert.to-rem(16px);
    }

    &.#{$prefix}--tabs--vertical:not(.#{$prefix}--tabs--tall)
      .#{$prefix}--tabs__nav-item-label {
      line-height: var(--cds-body-compact-01-line-height);
    }

    //-----------------------------
    // Icon Item
    //-----------------------------
    &.#{$prefix}--tabs__icon--default,
    &.#{$prefix}--tabs__icon--lg,
    &.#{$prefix}--tabs__icon--default .#{$prefix}--tab--list,
    &.#{$prefix}--tabs__icon--lg .#{$prefix}--tab--list {
      overflow-x: visible;
    }

    .#{$prefix}--tabs__nav-item--icon-only {
      margin-inline-end: convert.to-rem(1px);
    }

    .#{$prefix}--tabs__nav-item--icon-only,
    &.#{$prefix}--tabs--contained .#{$prefix}--tabs__nav-item--icon-only {
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 0;
      block-size: layout.size('height');
      inline-size: layout.size('height');

      .#{$prefix}--tabs__nav-item-label {
        line-height: 0;
      }
    }

    .#{$prefix}--tabs__nav-item--icon-only:not(
        .#{$prefix}--tabs__nav-item--icon-only__20
      )
      .#{$prefix}--badge-indicator {
      margin-block-start: $spacing-02;
      margin-inline-end: $spacing-02;
    }

    //-----------------------------
    // Item Hover
    //-----------------------------
    &:not(.#{$prefix}--tabs--contained)
      .#{$prefix}--tabs__nav-item:not(
        .#{$prefix}--tabs__nav-item--selected
      ):not(.#{$prefix}--tabs__nav-item--disabled):hover {
      border-block-end: $tab-underline-color-hover;
      color: $text-primary;
    }

    &.#{$prefix}--tabs--contained
      .#{$prefix}--tabs__nav-item:not(
        .#{$prefix}--tabs__nav-item--selected
      ):not(.#{$prefix}--tabs__nav-item--disabled):not(
        .#{$prefix}--tabs__nav-item--hover-off
      ):hover {
      background-color: $layer-accent-hover;
      color: $text-primary;
    }

    &.#{$prefix}--tabs--vertical
      .#{$prefix}--tabs__nav-item:not(
        .#{$prefix}--tabs__nav-item--selected
      ):not(.#{$prefix}--tabs__nav-item--disabled):not(
        .#{$prefix}--tabs__nav-item--hover-off
      ):hover {
      background-color: $layer-hover;
      box-shadow: inset 3px 0 0 0 $border-strong;
    }

    //-----------------------------
    // Item Selected
    //-----------------------------
    .#{$prefix}--tabs__nav-item--selected {
      border-block-end: 2px solid $border-interactive;
      transition: color $duration-fast-01 motion(standard, productive);
    }

    &.#{$prefix}--tabs--contained
      .#{$prefix}--tabs__nav-item--selected
      + .#{$prefix}--tabs__nav-item {
      box-shadow: none;
    }

    &.#{$prefix}--tabs--contained
      .#{$prefix}--tabs__nav-item.#{$prefix}--tabs__nav-item--selected {
      // Draws the border without affecting the inner-content
      box-shadow: inset 0 2px 0 0 $border-interactive;
    }

    &.#{$prefix}--tabs--vertical
      .#{$prefix}--tabs__nav-item.#{$prefix}--tabs__nav-item--selected {
      border-inline: none;
      // Draws the border without affecting the inner-content
      box-shadow: inset 3px 0 0 0 $border-interactive;
    }

    &.#{$prefix}--tabs--contained .#{$prefix}--tabs__nav-item--selected,
    .#{$prefix}--tabs__nav-item--selected,
    .#{$prefix}--tabs__nav-item--selected:focus
      .#{$prefix}--tabs__nav-link:focus,
    .#{$prefix}--tabs__nav-item--selected:active
      .#{$prefix}--tabs__nav-link:active {
      @include type-style('heading-compact-01');

      color: $text-primary;
    }

    &.#{$prefix}--tabs--contained:not(.#{$prefix}--tabs--tall)
      .#{$prefix}--tabs__nav-item--selected,
    &.#{$prefix}--tabs--contained:not(.#{$prefix}--tabs--tall)
      .#{$prefix}--tabs__nav-item--selected:hover {
      // height - vertical padding
      line-height: calc(#{convert.to-rem(48px)} - (#{$spacing-03} * 2));
    }

    &.#{$prefix}--tabs--contained .#{$prefix}--tabs__nav-item--selected,
    &.#{$prefix}--tabs--contained .#{$prefix}--tabs__nav-item--selected:hover {
      background-color: $layer;

      .#{$prefix}--tabs__nav-link:focus,
      .#{$prefix}--tabs__nav-link:active {
        box-shadow: none;
      }
    }

    &.#{$prefix}--tabs--light.#{$prefix}--tabs--contained
      .#{$prefix}--tabs__nav-item--selected,
    &.#{$prefix}--tabs--light.#{$prefix}--tabs--contained
      .#{$prefix}--tabs__nav-item--selected:hover {
      background-color: $background;
    }

    //-----------------------------
    //  Item Disabled
    //-----------------------------

    .#{$prefix}--tabs__nav-item--disabled {
      background-color: transparent;
      border-block-end: 2px solid $border-subtle;
      color: $tab-text-disabled;
      outline: none;
    }

    .#{$prefix}--tabs__nav-item--disabled:hover {
      border-block-end: 2px solid $border-subtle;
      color: $tab-text-disabled;
      cursor: not-allowed;
    }

    &.#{$prefix}--tabs--contained
      .#{$prefix}--tabs__nav-item.#{$prefix}--tabs__nav-item--disabled,
    &.#{$prefix}--tabs--contained
      .#{$prefix}--tabs__nav-item.#{$prefix}--tabs__nav-item--disabled:hover {
      background-color: button.$button-disabled;
    }

    &.#{$prefix}--tabs--vertical
      .#{$prefix}--tabs__nav-item.#{$prefix}--tabs__nav-item--disabled,
    &.#{$prefix}--tabs--vertical
      .#{$prefix}--tabs__nav-item.#{$prefix}--tabs__nav-item--disabled:hover {
      background-color: $layer;
      border-block-end: 1px solid $border-subtle;
    }

    .#{$prefix}--tabs__nav-item--disabled:focus,
    .#{$prefix}--tabs__nav-item--disabled:active {
      border-block-end: 2px solid $border-subtle;
      outline: none;
      pointer-events: none;
    }

    .#{$prefix}--tabs--light
      .#{$prefix}--tabs__nav-item--disabled
      .#{$prefix}--tabs__nav-link {
      border-block-end-color: $border-subtle;
    }

    .#{$prefix}--tabs--light
      .#{$prefix}--tabs__nav-item--disabled:hover
      .#{$prefix}--tabs__nav-link {
      border-block-end-color: $border-subtle;
    }

    .#{$prefix}--tabs--light
      .#{$prefix}--tabs__nav-item--disabled
      .#{$prefix}--tabs__nav-link:focus,
    .#{$prefix}--tabs--light
      .#{$prefix}--tabs__nav-item--disabled
      .#{$prefix}--tabs__nav-link:active {
      border-block-end-color: $border-subtle;
    }

    &.#{$prefix}--tabs--contained:not(.#{$prefix}--tabs--vertical)
      .#{$prefix}--tabs__nav-item--disabled {
      border-block-end: none;
      color: $text-on-color-disabled;
    }
  }
  //-----------------------------
  //  Tab Content Container
  //-----------------------------
  .#{$prefix}--tab-content {
    padding: layout.density('padding-inline');

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

  .#{$prefix}--tabs--contained ~ .#{$prefix}--tab-content {
    background: $layer;
  }

  .#{$prefix}--tabs--vertical ~ .#{$prefix}--tab-content {
    @include update_fields_on_layer;

    grid-column: 3/-1;
    overflow-y: auto;

    @include breakpoint(lg) {
      grid-column: 5/-1;
    }
  }

  //-----------------------------
  // Skeleton state
  //-----------------------------
  .#{$prefix}--tabs.#{$prefix}--skeleton {
    cursor: default;
    pointer-events: none;
  }

  .#{$prefix}--skeleton.#{$prefix}--tabs:not(.#{$prefix}--tabs--contained)
    .#{$prefix}--tabs__nav-link {
    border-block-end: 2px solid $skeleton-element;
  }

  .#{$prefix}--tabs.#{$prefix}--skeleton .#{$prefix}--tabs__nav-link {
    display: flex;
    align-items: center;
    padding: 0 layout.density('padding-inline');
    block-size: 100%;
    inline-size: 10rem;
  }

  .#{$prefix}--tabs.#{$prefix}--skeleton .#{$prefix}--tabs__nav-link span {
    @include skeleton;

    display: block;
    block-size: convert.to-rem(14px);
    inline-size: 100%;
  }

  // Windows HCM fix
  .#{$prefix}--tabs__nav-item--selected .#{$prefix}--tabs__nav-link,
  .#{$prefix}--tabs__nav-item--selected.#{$prefix}--tabs__nav-link,
  .#{$prefix}--tabs.#{$prefix}--tabs--contained
    .#{$prefix}--tabs__nav-item--selected,
  .#{$prefix}--tabs.#{$prefix}--tabs--contained
    .#{$prefix}--tabs__nav-item--selected.#{$prefix}--tabs__nav-link {
    @include high-contrast-mode {
      background-color: SelectedItem;
    }
  }

  .#{$prefix}--tabs
    .#{$prefix}--tabs__nav-item--disabled
    .#{$prefix}--tabs__nav-link {
    @include high-contrast-mode('disabled');
  }
}

//-----------------------------
// Grid contained tabs
//-----------------------------

.#{$prefix}--tabs.#{$prefix}--tabs--contained.#{$prefix}--tabs--full-width
  .#{$prefix}--tab--list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(0, 1fr));
  inline-size: 100%;

  .#{$prefix}--tabs__nav-link {
    .#{$prefix}--tabs__nav-item-label,
    .#{$prefix}--tabs__nav-item-secondary-label {
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .#{$prefix}--tabs__nav-item--icon {
      margin-inline-start: auto;
    }
  }
}

.#{$prefix}--tabs.#{$prefix}--tabs--vertical {
  .#{$prefix}--tabs__nav-link {
    .#{$prefix}--tabs__nav-item-label {
      display: -webkit-box;
      overflow: hidden;
      -webkit-box-orient: vertical;
      -webkit-line-clamp: 2;
      text-overflow: ellipsis;
      white-space: normal;
    }
  }
}