/*
 * Tabs item style (content sections). WordPress-only, loaded on pages that use it (js/tabs.js).
 * Desktop: numbered tab list on the left, panel on the right.
 * Below 900px: the numbered tabs scroll sideways above the panel.
 * Without JavaScript the panels show stacked and the tab list stays hidden.
 */
.article-tabs {
  margin: 1.75rem 0;
}

.page-article .article-tabs {
  max-width: none;
  width: 100%;
}

/* ---- Panel ---- */
.article-tabs__panel {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.6rem 1.6rem 1.5rem;
  background: var(--cla-white);
  border: 1px solid rgba(45, 60, 89, 0.1);
  border-top: 3px solid var(--cla-teal);
}

.article-tabs__panel[hidden] {
  display: none;
}

.topic-section:not(.topic-section--tint) .article-tabs__panel {
  background: var(--cla-off-white);
}

.article-tabs__panel + .article-tabs__panel {
  margin-top: 1rem;
}

.article-tabs__panel:focus-visible {
  outline: 2px solid var(--cla-navy);
  outline-offset: 2px;
}

.article-tabs__count {
  margin: 0 0 0.6rem !important;
  max-width: none !important;
  font-family: var(--font-sans);
  font-size: var(--cla-label, 0.75rem) !important;
  font-weight: var(--cla-weight-bold, 700);
  letter-spacing: var(--cla-tracking-label, 0.12em);
  color: var(--cla-text-muted) !important;
}

.article-tabs__count span {
  color: var(--cla-navy);
}

.article-tabs__heading {
  margin: 0 0 0.85rem;
  font-family: var(--font-serif);
  font-size: var(--cla-h2);
  font-weight: var(--cla-weight-medium);
  line-height: 1.2;
  color: var(--cla-navy);
}

.article-tabs__panel p {
  max-width: 62ch;
  font-size: var(--cla-body);
  line-height: 1.65;
}

.article-tabs__panel > p:last-of-type {
  margin-bottom: 0;
}

.article-tabs__panel.is-entering {
  animation: article-tabs-in 0.28s ease-out;
}

@keyframes article-tabs-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* Previous / Next (added by js/tabs.js) */
.article-tabs__steps {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: auto;
  padding-top: 1.5rem;
}

.article-tabs__step {
  appearance: none;
  padding: 0.35rem 0;
  background: none;
  border: 0;
  border-bottom: 1px solid transparent;
  font-family: var(--font-sans);
  font-size: var(--cla-small);
  font-weight: var(--cla-weight-semibold);
  letter-spacing: 0.02em;
  color: var(--cla-navy);
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.article-tabs__step--next {
  margin-left: auto;
}

.article-tabs__step:hover {
  border-bottom-color: var(--cla-teal);
}

.article-tabs__step:focus-visible {
  outline: 2px solid var(--cla-navy);
  outline-offset: 3px;
}

/* ---- Tab list ---- */
.article-tabs__list[hidden] {
  display: none;
}

.article-tabs__list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid rgba(45, 60, 89, 0.12);
}

.article-tabs__tab {
  appearance: none;
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  width: 100%;
  margin: 0;
  padding: 0.95rem 2.25rem 0.95rem 1rem;
  background: none;
  border: 0;
  border-bottom: 1px solid rgba(45, 60, 89, 0.12);
  font-family: var(--font-sans);
  font-size: var(--cla-body);
  font-weight: var(--cla-weight-semibold);
  line-height: 1.35;
  text-align: left;
  color: var(--cla-text);
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.article-tabs__num {
  flex: 0 0 auto;
  font-size: var(--cla-small);
  font-weight: var(--cla-weight-bold, 700);
  letter-spacing: 0.04em;
  color: var(--cla-text-muted);
  font-variant-numeric: tabular-nums;
}

.article-tabs__tab:hover {
  background: rgba(125, 210, 211, 0.14);
}

.article-tabs__tab[aria-selected="true"] {
  background: var(--cla-navy);
  color: var(--cla-white);
}

.article-tabs__tab[aria-selected="true"] .article-tabs__num {
  color: var(--cla-teal);
}

.article-tabs__tab:focus-visible {
  outline: 2px solid var(--cla-teal);
  outline-offset: -2px;
}

/* ---- Layout once the script has run ---- */
.article-tabs.is-ready {
  display: grid;
  gap: 1rem;
}

@media (min-width: 900px) {
  .article-tabs.is-ready {
    grid-template-columns: minmax(15rem, 22rem) minmax(0, 1fr);
    gap: 0;
    align-items: stretch;
  }

  .article-tabs.is-ready .article-tabs__panel {
    height: 100%;
    padding: 2rem 2.25rem 1.75rem;
    border-top: 1px solid rgba(45, 60, 89, 0.1);
    border-left: 3px solid var(--cla-teal);
  }

  /* Arrow from the selected tab into the panel */
  .article-tabs__tab[aria-selected="true"]::after {
    content: "";
    position: absolute;
    top: 50%;
    right: 1rem;
    width: 0.45rem;
    height: 0.45rem;
    border-top: 2px solid var(--cla-teal);
    border-right: 2px solid var(--cla-teal);
    transform: translateY(-50%) rotate(45deg);
  }
}

@media (max-width: 899px) {
  .article-tabs__list {
    flex-direction: row;
    overflow-x: auto;
    border-top: 0;
    border-bottom: 1px solid rgba(45, 60, 89, 0.15);
    scrollbar-width: none;
    -webkit-mask-image: linear-gradient(to right, #000 85%, transparent);
    mask-image: linear-gradient(to right, #000 85%, transparent);
  }

  .article-tabs__list.is-scroll-end {
    -webkit-mask-image: none;
    mask-image: none;
  }

  .article-tabs__list::-webkit-scrollbar {
    display: none;
  }

  .article-tabs__tab {
    flex: 0 0 auto;
    width: auto;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border-bottom: 0;
    max-width: 16rem;
    align-items: center;
  }

  .article-tabs__heading {
    font-size: var(--cla-h3);
  }
}

@media (prefers-reduced-motion: reduce) {
  .article-tabs__tab,
  .article-tabs__step {
    transition: none;
  }

  .article-tabs__panel.is-entering {
    animation: none;
  }
}