.atabs {
  background: #fff;
  position: relative;
}

.atabs__list__wrapper {
  overflow: auto;
  scroll-behavior: smooth;
  inline-size: 100%;
  background-image: linear-gradient(to right, white, white),
    linear-gradient(to right, white, white),
    linear-gradient(to right, rgba(0, 0, 0, 0.25), rgba(255, 255, 255, 0)),
    linear-gradient(to left, rgba(0, 0, 0, 0.25), rgba(255, 255, 255, 0));
  background-position: left center, right center, left center, right center;
  background-repeat: no-repeat;
  background-color: white;
  background-size: 20px 100%, 20px 100%, 10px 100%, 10px 100%;
  background-attachment: local, local, scroll, scroll;
  border-left: 1px solid #999;
  border-right: 1px solid #999;
  border-top: 1px solid #999;
  border-bottom: 1px solid black;
}

.atabs__list:not([aria-orientation="vertical"]) {
  display: flex;
  white-space: nowrap;
}

[data-atabs-orientation="vertical"] {
  border-top: 1px solid;
  display: flex;
  flex-wrap: wrap;
}


.atabs__list[aria-orientation="vertical"] {
  width: 100%
}

.atabs__list[aria-orientation="vertical"] .atabs__list__tab {
  border-right: 0;
  display: inline-block;
  text-align: left;
  width: 100%;
}

[data-atabs-orientation="vertical"] .atabs__panel {
  width: 100%;
}

[data-atabs-orientation="vertical"] [role="tablist"] {
  border-left: 1px solid;
  border-right: 1px solid;
}

@media screen and ( min-width: 34em ) {
  [data-atabs-orientation="vertical"] .atabs__panel {
    width: calc(100% - 12em);
  }

  .atabs__list[aria-orientation="vertical"] {
    width: 12em;
  }

  .atabs__list[aria-orientation="vertical"] .atabs__list__tab:last-of-type {
    border-bottom: 0;
  }

  [data-atabs-orientation="vertical"] [role="tablist"] {
    border-bottom: 1px solid;
    border-left: 1px solid;
    border-right: 0;
  }

  [data-atabs-orientation="vertical"] [role="tablist"] {
    border-left: 1px solid;
  }
}

.atabs__list[hidden] {
  display: none;
}

/**
 * Just to make sure invalid children of a
 * tablist are not visible/accessible.
 * these should also be removed from the DOM
 */
.atabs__list > :not([role="tab"]) {
  /* TODO: investigate */
  /*display: none;*/
}

.atabs__list__tabwrapper {
  display: flex;
  flex-grow:  1;
  color: black;
}

.atabs__list__tabwrapper:not(:last-of-type) {
  border-right: 1px solid;
}

.atabs__list__tabwrapper:hover {
  background: #4464c2;
  color: white;
}

.atabs__list__tabwrapper.selected,
.atabs__list__tabwrapper.selected:hover {
  background-color: #213469;
  color:  white;
}

.atabs__list__tabwrapper.focused {
  outline: 2px solid currentColor;
  outline-offset: -4px;
}

.atabs__list__tab {
  -webkit-appearance: none; /* btn */
  appearance: none; /* btn */
  background: transparent;
  border: 0; /* btn */
  flex-grow: 1;
  font: inherit; /* btn */
  margin: 0; /* btn */
  padding: .825em 1em;
  position: relative;
  text-decoration: none; /* if <a> */
  cursor: default;
}

.atabs__list__tab[aria-disabled="true"],
.atabs__list__close[disabled] {
  cursor: not-allowed;
  opacity: 0.5;
}

.atabs__list__tab > span,
.atabs__list__tab > svg,
.atabs__list__tab > img {
  pointer-events: none;
}

.atabs__list__tab[aria-selected="true"],
.atabs__list__close:focus {
  /*background: #213469;*/
  /* TODO: Investigate and re-introduce: */
  /*border-bottom: 3px solid #213469;*/  /* high contrast vid */
  /*color: currentColor;*/
}

.atabs__list__tab:focus,
.atabs__list__tab:focus-visible,
.atabs__list__close:focus,
.atabs__list__close:focus-visible {
  outline: 2px solid transparent;
}

.atabs__list__close {
  -webkit-appearance:  none;
  appearance: none;
  padding: 0.75em;
  display: flex;
  align-items: stretch;
  justify-content:  stretch;
  background-color:  transparent;
  color: currentColor;
  border: 0;
  font-family:  '';
}

.atabs__list__close:hover > span,
.atabs__list__close:focus > span {
  border-color:  white;
  background-color:  darkred;
}

.atabs__list__close > span {
  display: flex;
  justify-content: center;
  align-items: center;
  padding-inline: 0.5em;
  border:  2px solid transparent;
}

.atabs__panel[hidden] {
  display: none;
}

.atabs__panel {
  border: 1px solid;
  border-top: 0;
  padding: 1.25em;
}

.atabs__panel:focus-visible {
  box-shadow: inset 0 0 1px #222;
  outline: 2px solid;
  outline-offset: -2px;
}

.atabs__panel:focus,
.atabs__panel.focus-visible {
  box-shadow: inset 0 0 1px #0072e4;
  outline: 4px solid #0072e4;
  outline-offset: -3px;
}

.atabs__panel > :first-child {
  margin-top: 0;
}

.atabs__panel > :last-child {
  margin-bottom: 0;
}