//
// 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.
//

@use '../../config' as *;
@use '../../spacing' as *;
@use '../../theme' as *;
@use '../../motion' as *;

/// Pseudo underline
/// @access public
/// @group pagination-nav
@mixin pseudo-underline() {
  &:not(.#{$prefix}--pagination-nav__page--direction) {
    &::after {
      position: absolute;
      display: block;
      background-color: $border-interactive;
      block-size: $spacing-02;
      content: '';
      inline-size: 0;
      inset-block-end: 0;
      inset-inline-start: 50%;
      opacity: 0;
      transition: width $duration-fast-02 motion(standard, productive);

      @media screen and (prefers-reduced-motion: reduce) {
        transition: none;
      }
    }
  }

  .#{$prefix}--pagination-nav__page--active + &::after,
  &.#{$prefix}--pagination-nav__page--active::after {
    inline-size: $spacing-05;
    inset-inline-start: calc(50% - #{$spacing-05 * 0.5});
    opacity: 1;
  }
}