/* Tablist carousel */

.pillar-3__tablist-wrap {
  overflow-x: auto;
  overflow-y: visible;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  text-align: center;
  padding: 1em 0;
  margin-bottom: calc(var(--gap) * 4);
  border-bottom: 1px solid #efefef;
}
.pillar-3__tablist-wrap::-webkit-scrollbar {
  display: none;
}
.pillar-3__tablist {
  display: inline-flex;
  gap: calc(var(--gap) / 2);
  scroll-snap-type: x mandatory;
  padding: 0;
}
.pillar-3__tab {
  scroll-snap-align: start;
  flex-shrink: 0;
  appearance: none;
  -webkit-appearance: none;
  background-color: var(--deep-blue);
  border: 1px solid var(--deep-blue);
  cursor: pointer;
}

.pillar-3__tab.btn.btn-blue.is-active {
  background-color: var(--secondary-color-2);
}

@media (max-width:1024px) {
  .pillar-3__tablist-wrap {
    position: sticky;
    width: 100%;
    height: auto;
    background: var(--white);
    left: 0;
    top: 0;
  }
}

@media (max-width: 479px) {
  .pillar-3__tablist-wrap {
    overflow-x: visible;
  }
  .pillar-3__tablist {
    display: flex;
    flex-direction: column;
    scroll-snap-type: none;
  }
  .pillar-3__tab {
    width: 100%;
    padding: 0.5rem 1rem;
  }
}


/* Chapters */

.pillar-3-chapters__chapters {
  display: grid;
  grid-gap: var(--gap);
}
.pillar-3-chapters__chapter {
  position: relative;
  padding: 4rem;
  background-color: var(--light-gray);
  overflow: hidden;
  color: var(--base-color);
  text-align: center;
}
.pillar-3-chapters__chapter-overlay {
  position: absolute;
  inset: 0;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  padding: 2rem;
  background-repeat: no-repeat;
  background-position: 50%;
  background-size: cover;
  -webkit-transform: translateY(101%);
  transform: translateY(101%);
  -webkit-transition: -webkit-transform 0.2s ease;
  transition: -webkit-transform 0.2s ease;
  transition: transform 0.2s ease;
  transition: transform 0.2s ease, -webkit-transform 0.2s ease;
  color: var(--white);
  font-weight: 700;
}
.pillar-3-chapters__chapter:hover .pillar-3-chapters__chapter-overlay {
  -webkit-transform: translateY(0%);
  transform: translateY(0%);
}
@media (min-width: 576px) {
  .pillar-3-chapters__chapters {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 992px) {
  .pillar-3-chapters__chapters {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Panel layout: sidenav + chapters side-by-side */

.pillar-3__panel-inner {
  display: grid;
  grid-template-columns: 1fr;
  align-items: start;
}
@media (min-width: 1024px) {
  .pillar-3__panel-inner {
    grid-template-columns: 220px 1fr;
    gap: var(--gap, 2rem);
  }
}

/* Sidenav */

.pillar-3__sidenav {
  display: none;
}
@media (min-width: 1024px) {
  .pillar-3__sidenav {
    display: block;
    position: sticky;
    top: 0;
    padding-top: 1em;
    max-height: calc(100vh - 4rem);
    overflow-y: auto;
  }
}
.pillar-3__sidenav-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.pillar-3__sidenav-item {
  border-bottom: 1px solid transparent;
}
.pillar-3__sidenav-item + .pillar-3__sidenav-item {
  margin-top: calc(var(--gap) / 2);
}
.pillar-3__sidenav-link {
  display: block;
  padding: 0;
  color: var(--secondary-color-2);
  font-weight: 400;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: opacity 0.2s ease;
}
.pillar-3__sidenav-link:hover,
.pillar-3__sidenav-link.is-active {
  color: var(--secondary-color);
}



/* Chapters */

.pillar-3__chapter + .pillar-3__chapter {
  margin-top: calc(var(--gap) * 4);
}

.pillar-3-hero {
  width: 100%;
  aspect-ratio: 8/3;
  -o-object-fit: cover;
  object-fit: cover;
}
.pillar-3-content__title {
  text-align: center;
}

.pillar-3__intro {
  display: flex;
  flex-direction: row;
  gap: calc(var(--gap) * 2);
  align-items: flex-start;
}

@media (max-width:767px) {
  .pillar-3__intro {
    flex-direction: column;
  }
}

.pillar-3__intro-description {
  font-size: 1.25em;
}

.pillar-3__intro > img {
  flex: 35% 0 0;
}

.pillar-3__feature-image {
  margin: calc(var(--gap) * 2) 0 0;
  width: 100%;
  height: auto;
}

.pillar-3__features {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
  margin: calc(var(--gap) * 2) 0 0;
  padding: 0;
}

@media (max-width:580px) {
  .pillar-3__features {
    grid-template-columns: repeat(1, 1fr);
  }
}

.pillar-3__feature {
  display: flex;
  flex-direction: column;
  gap: calc(var(--gap) / 2);
}

.pillar-3__sub-text {
  margin: calc(var(--gap) * 2) 0 0;
}

.pillar-3__sub-text.has-image {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gap);
  overflow: hidden;
}

@media (max-width:767px) {
  .pillar-3__sub-text.has-image {
    display: block;
  }
}

.pillar-3__sub-text.has-image .pillar-3__sub-text-content {
  background-color: var(--light-gray);
  padding: 3rem;
}
.pillar-3__sub-text.has-image .pillar-3__sub-text-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* FAQ accordion */

.pillar-3__faq {
  display: flex;
  gap: calc(var(--gap) * 2);
  margin: calc(var(--gap) * 2) 0 0;
}
@media (max-width:580px) {
  .pillar-3__faq {
    flex-direction: column;
    gap: 0;
  }
}
.pillar-3__faq-col {
  flex: 1 1 0;
  min-width: 0;
}

.pillar-3__faq-question {
  display: flex;
  align-items: flex-start;
  gap: calc(var(--gap) / 2);
  padding: 0 0 0.5em;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
}
.pillar-3__faq-question::-webkit-details-marker {
  display: none;
}
.pillar-3__faq-question::before {
  content: "+";
  flex-shrink: 0;
  font-size: 1.5em;
  transition: transform 0.2s ease;
  width: 1em;
  height: 1em;
  line-height: 0.85em;
  font-weight: 400;
}
.pillar-3__faq-item[open] > .pillar-3__faq-question {
  font-weight: 800;
}
.pillar-3__faq-item[open] > .pillar-3__faq-question::before {
  content: "\00D7";
}
.pillar-3__faq-answer {
  padding-bottom: var(--gap);
  padding-left: calc(24px + 0.5em);
}
.pillar-3__faq-answer p {
  font-size: 1em;
}

/* Smooth open/close — Chrome 129+, Safari 18+ (progressive enhancement) */
@supports (interpolate-size: allow-keywords) {
  .pillar-3__faq-item {
    interpolate-size: allow-keywords;
    overflow: hidden;
    transition: height 0.35s ease;
    height: fit-content; /* closed = summary height only (content is display:none) */
  }
  .pillar-3__faq-item[open] {
    height: auto; /* open = summary + answer content */
  }
  @starting-style {
    .pillar-3__faq-item[open] {
      height: fit-content; /* animate FROM summary-only height when opening */
    }
  }
}

.pillar-3__closing {
  margin: calc(var(--gap) * 2) 0 0;
}

/* Popup form button */

.pillar-3__popup-button {
  margin: calc(var(--gap) * 2) 0 0;
}

.pillar-3__popup {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  place-items: center;
  padding: var(--gap);
}

.pillar-3__popup:not([hidden]) {
  display: grid;
}

html.pillar-3-popup-lock,
html.pillar-3-popup-lock body {
  overflow: hidden;
}

.pillar-3__popup-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.6);
}

.pillar-3__popup-dialog {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 75rem;
  max-height: 90vh;
  overflow-y: auto;
  padding: calc(var(--gap) * 2);
  background-color: var(--white);
}

.pillar-3__popup-intro {
  margin-bottom: var(--gap);
}
.pillar-3__popup-intro > :last-child {
  margin-bottom: 0;
}

.pillar-3__popup-dialog form.hs-form {
  max-width: 100%;
}

.pillar-3__popup-dialog form.hs-form fieldset {
  display: flex;
}

.pillar-3__popup-dialog form.hs-form fieldset .hs-form-field {
    flex-grow: 1;
    flex-shrink: 1;
    flex-basis: 0;
}

@media (max-width: 767px) {
  .pillar-3__popup-dialog form.hs-form fieldset {
    flex-direction: column;
  }
}

.pillar-3__popup-close {
  position: absolute;
  top: calc(var(--gap) / 2);
  right: calc(var(--gap) / 2);
  appearance: none;
  -webkit-appearance: none;
  border: 0;
  background: none;
  padding: 0.5em;
  line-height: 1;
  font-size: 1.5em;
  cursor: pointer;
}

/* Back to top */

.pillar-3__back-to-top {
  position: fixed;
  display: grid;
  place-content: center;
  bottom: 2rem;
  right: 2rem;
  width: 4.8rem;
  padding: 0;
  z-index: 2;
}
.pillar-3__back-to-top > svg {
  height: 1rem;
}