/*
 * Research & Innovation — Design System
 * Follows the same tokens and patterns as ug-studies-figma.css (fus-*)
 * Scoped under .figma-research with fr-* prefix.
 *
 * Desktop tokens: section 80px, extra-large 40px, large 24px, medium-large 20px,
 * medium 12px, small 8px, extra-small 4px; page padding 80px; card 30px.
 */

.figma-research {
  --fr-brand: #a70e13;
  --fr-ink: #222222;
  --fr-secondary: #434343;
  --fr-tertiary: #656565;
  --fr-stroke: #bbbbbb;
  --fr-stroke-dark: #989898;
  --fr-section-bg: #efefef;
  --fr-light-section: #f4f4f4;
  --fr-white: #ffffff;
  --fr-bg: #ffffff;

  --fr-gap-section: 80px;
  --fr-gap-extra: 40px;
  --fr-gap-lg: 24px;
  --fr-gap-ml: 20px;
  --fr-gap-md: 12px;
  --fr-gap-sm: 8px;
  --fr-gap-xs: 4px;

  --fr-pad-card: 30px;
  --fr-pad-lg: 24px;
  --fr-pad-medium: 16px;
  --fr-pad-cta-x: 24px;
  --fr-pad-cta-y: 12px;

  --fr-pad-inline: var(--iitd-pad-page, 80px);
  --fr-content-max: min(1280px, 100%);

  --fr-explore-row-h: 300px;

  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: var(--fr-gap-section);
  width: 100%;
  margin: 0;
  padding: 0 0 var(--fr-gap-section);
  color: var(--fr-ink);
  font-family: "Titillium Web", sans-serif;
  font-size: 16px;
  line-height: 1.45;
  background: var(--fr-bg);
}

.figma-research *,
.figma-research *::before,
.figma-research *::after {
  box-sizing: border-box;
}

.figma-research a {
  color: var(--fr-brand);
}

/* Bold brand name used in text (IIT Delhi - Abu Dhabi) */
.figma-research .iitad-bold {
  font-weight: 700;
}

/* ---------- Page inner container ---------- */

.figma-research .fr-page-inner {
  width: 100%;
  max-width: var(--fr-content-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--fr-pad-inline);
  padding-right: var(--fr-pad-inline);
}

/* ---------- Hero: full-bleed image ---------- */

.figma-research .fr-hero {
  position: relative;
  display: flex;
  align-items: flex-end;
  width: 100%;
  min-height: 460px;
  overflow: hidden;
  /* Remove flex gap before hero (first child has no preceding gap) */
  margin-top: 0;
}

.figma-research .fr-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: top center;
  background-repeat: no-repeat;
  z-index: 0;
}

.figma-research .fr-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(164, 30, 34, 0.45), rgba(164, 30, 34, 0.12));
  z-index: 1;
}

.figma-research .fr-hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--fr-content-max);
  margin: 0 auto;
  padding: var(--fr-gap-section) var(--fr-pad-inline);
  display: flex;
  flex-direction: column;
  gap: var(--fr-gap-lg);
}

/* Breadcrumb inside hero */
.figma-research .fr-bc {
  margin: 0;
  padding: 0;
  width: 100%;
}

.figma-research .fr-bc-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--fr-gap-md);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.35;
}

.figma-research .fr-bc-item {
  display: inline-flex;
  align-items: center;
}

.figma-research .fr-bc-link {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  font-weight: 600;
}

.figma-research .fr-bc-link:hover,
.figma-research .fr-bc-link:focus-visible {
  color: var(--fr-white);
  text-decoration: underline;
  outline: none;
}

.figma-research .fr-bc-current {
  color: var(--fr-white);
  font-weight: 600;
}

.figma-research .fr-bc-sep {
  color: rgba(255, 255, 255, 0.55);
  font-weight: 400;
  user-select: none;
}

.figma-research .fr-hero-title {
  margin: 0;
  font-size: 44px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--fr-white);
  max-width: 720px;
}

/* ---------- Shared block spacing ---------- */

.figma-research .fr-block {
  margin: 0;
  padding: 0;
}

/* ---------- Section typography ---------- */

.figma-research .fr-section-title {
  margin: 0 0 var(--fr-gap-lg);
  font-size: 32px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--fr-ink);
}

.figma-research .fr-body-text {
  margin: 0;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.7;
  color: var(--fr-secondary);
}

.figma-research .fr-body-text + .fr-body-text {
  margin-top: var(--fr-gap-ml);
}

/* ---------- Intro section ---------- */

.figma-research .fr-intro {
  max-width: 880px;
  display: flex;
  flex-direction: column;
  gap: var(--fr-gap-lg);
}

.figma-research .fr-intro-kicker {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  color: var(--fr-brand);
  line-height: 1.3;
}

/* ---------- Carousel block ---------- */

.figma-research .fr-carousel-wrap {
  width: 100%;
}

.figma-research .fr-carousel-wrap .carousel {
  position: relative;
  width: 100%;
}

.figma-research .fr-carousel-wrap .carousel-inner {
  position: relative;
  width: 100%;
  overflow: hidden;
  border-radius: 8px;
}

.figma-research .fr-carousel-wrap .carousel-fade .carousel-item {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  width: 100%;
  opacity: 0;
  transition: opacity 0.6s ease-in-out;
}

.figma-research .fr-carousel-wrap .carousel-fade .carousel-item.active {
  position: relative;
  opacity: 1;
}

.figma-research .fr-carousel-wrap .carousel-item {
  display: none;
  width: 100%;
}

.figma-research .fr-carousel-wrap .carousel-item.active {
  display: block;
}

.figma-research .fr-carousel-wrap .carousel-fade .carousel-item,
.figma-research .fr-carousel-wrap .carousel-fade .carousel-item.active {
  display: block;
}

.figma-research .fr-carousel-wrap .carousel-item img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  border-radius: 8px;
}

.figma-research .fr-carousel-wrap .carousel-item a {
  display: block;
  text-decoration: none;
}

.figma-research .fr-carousel-wrap .carousel-item a:focus-visible {
  outline: 2px solid var(--fr-brand);
  outline-offset: 2px;
  border-radius: 8px;
}

.figma-research .fr-carousel-wrap .carousel .carousel-control-prev,
.figma-research .fr-carousel-wrap .carousel .carousel-control-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  width: clamp(44px, 6vw, 72px);
  height: clamp(44px, 6vw, 72px);
  border: 0;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background-color: rgba(255, 255, 255, 0.45);
  opacity: 1;
  transition: background-color 0.2s ease-in-out;
}

.figma-research .fr-carousel-wrap .carousel .carousel-control-prev {
  left: clamp(6px, 2vw, 20px);
}

.figma-research .fr-carousel-wrap .carousel .carousel-control-next {
  right: clamp(6px, 2vw, 20px);
}

.figma-research .fr-carousel-wrap .carousel .carousel-control-prev:hover,
.figma-research .fr-carousel-wrap .carousel .carousel-control-next:hover,
.figma-research .fr-carousel-wrap .carousel .carousel-control-prev:focus,
.figma-research .fr-carousel-wrap .carousel .carousel-control-next:focus {
  background-color: rgba(255, 255, 255, 0.85);
  outline: none;
}

.figma-research .fr-carousel-wrap .carousel .carousel-control-prev-icon,
.figma-research .fr-carousel-wrap .carousel .carousel-control-next-icon {
  background: none;
  width: auto;
  height: auto;
}

.figma-research .fr-carousel-wrap .carousel .control-icon {
  width: clamp(24px, 4vw, 40px);
  height: clamp(24px, 4vw, 40px);
  color: #a41e22;
}

.figma-research .fr-carousel-wrap .carousel .control-icon path {
  stroke: currentColor;
  stroke-width: clamp(4px, 0.6vw, 6px);
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
}

@media (prefers-reduced-motion: reduce) {
  .figma-research .fr-carousel-wrap .carousel,
  .figma-research .fr-carousel-wrap .carousel-item {
    transition: none !important;
  }
}

/* ---------- Two-column split sections ---------- */

.figma-research .fr-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--fr-gap-section);
  align-items: center;
}

.figma-research .fr-split-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.figma-research .fr-split-media {
  position: relative;
  border: 1px solid var(--fr-stroke-dark);
  overflow: hidden;
  background: var(--fr-light-section);
}

.figma-research .fr-split-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

/* ---------- Muted full-bleed band ---------- */

.figma-research .fr-block--muted {
  background: var(--fr-section-bg);
  padding: var(--fr-gap-section) var(--fr-pad-inline);
}

.figma-research .fr-block--muted .fr-page-inner {
  padding-left: 0;
  padding-right: 0;
}

/* ---------- Featured Research Events ---------- */

.figma-research .fr-events-head {
  margin-bottom: var(--fr-gap-extra);
  display: flex;
  flex-direction: column;
  gap: var(--fr-gap-sm);
  max-width: 720px;
}

.figma-research .fr-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  background: rgba(167, 14, 19, 0.08);
  color: var(--fr-brand);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  align-self: flex-start;
}

.figma-research .fr-events-intro {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--fr-tertiary);
}

.figma-research .fr-events-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--fr-gap-lg);
  align-items: stretch;
}

.figma-research .fr-event-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  border: 1px solid rgba(167, 14, 19, 0.1);
  border-radius: 0;
  overflow: hidden;
  background: var(--fr-white);
  border: 1px solid var(--fr-stroke);
  transition: box-shadow 0.22s ease, border-color 0.22s ease, transform 0.22s ease;
}

.figma-research .fr-event-card:hover {
  border-color: rgba(167, 14, 19, 0.25);
  box-shadow: 0 12px 32px rgba(61, 28, 28, 0.1);
  transform: translateY(-4px);
}

.figma-research .fr-event-media {
  position: relative;
  overflow: hidden;
  background: var(--fr-light-section);
  aspect-ratio: 16 / 9;
}

.figma-research .fr-event-media img,
.figma-research .fr-event-media lite-youtube {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.figma-research .fr-event-body {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  padding: var(--fr-pad-card);
  gap: var(--fr-gap-sm);
}

.figma-research .fr-event-title {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--fr-ink);
}

.figma-research .fr-event-date {
  margin: 0;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--fr-stroke-dark);
}

.figma-research .fr-event-desc {
  margin: 0;
  flex: 1 1 auto;
  font-size: 15px;
  line-height: 1.65;
  color: var(--fr-tertiary);
}

.figma-research .fr-event-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: var(--fr-gap-md);
  padding: var(--fr-pad-cta-y) var(--fr-pad-cta-x);
  border: 1px solid var(--fr-brand);
  color: var(--fr-brand);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  align-self: flex-start;
  border-radius: 0;
  transition: background 0.18s, color 0.18s;
}

.figma-research .fr-event-link:hover,
.figma-research .fr-event-link:focus-visible {
  background: var(--fr-brand);
  color: var(--fr-white);
  outline: none;
}

/* ---------- Explore More ---------- */

.figma-research .fr-explore-section {
  margin-top: 0;
  display: flex;
  flex-direction: column;
  gap: var(--fr-gap-lg);
}

.figma-research .fr-heading-row {
  display: flex;
  align-items: center;
  gap: var(--fr-gap-md);
  width: 100%;
}

.figma-research .fr-heading {
  margin: 0;
  font-size: 32px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--fr-ink);
  flex: 1 1 auto;
}

.figma-research .fr-explore-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  width: 100%;
  background: var(--fr-stroke-dark);
  border: 1px solid var(--fr-stroke-dark);
}

.figma-research .fr-explore-card {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-end;
  min-height: var(--fr-explore-row-h);
  padding: var(--fr-pad-card);
  text-decoration: none;
  color: inherit;
  background: var(--fr-section-bg);
}

.figma-research .fr-explore-card-inner {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  gap: var(--fr-gap-ml);
  width: 100%;
  min-height: 0;
}

.figma-research .fr-explore-media {
  position: relative;
  flex: 1 1 auto;
  min-height: 120px;
  width: 100%;
  overflow: hidden;
}

.figma-research .fr-explore-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.figma-research .fr-explore-footer {
  display: flex;
  align-items: center;
  gap: var(--fr-gap-md);
  width: 100%;
}

.figma-research .fr-explore-title {
  margin: 0;
  flex: 1 1 auto;
  min-width: 0;
  font-size: 24px;
  font-weight: 600;
  line-height: normal;
  color: var(--fr-ink);
}

.figma-research .fr-explore-arrow {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  color: var(--fr-ink);
}

.figma-research .fr-explore-arrow .iitd-icon {
  width: 30px;
  height: 30px;
}

.figma-research .fr-explore-card:hover .fr-explore-title {
  text-decoration: underline;
}

.figma-research .fr-explore-card:focus-visible {
  outline: 3px solid var(--fr-brand);
  outline-offset: 2px;
  position: relative;
  z-index: 1;
}

/* ---------- Responsive ---------- */

@media (max-width: 1199.98px) {
  .figma-research .fr-explore-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 991.98px) {
  .figma-research {
    --fr-pad-inline: var(--iitd-pad-page, 24px);
    --fr-gap-section: 60px;
    gap: 60px;
  }

  .figma-research .fr-block--muted {
    padding-top: 60px;
    padding-bottom: 60px;
  }

  .figma-research .fr-hero {
    min-height: 380px;
  }

  .figma-research .fr-hero-title {
    font-size: 32px;
  }

  .figma-research .fr-section-title,
  .figma-research .fr-heading {
    font-size: 28px;
    margin-bottom: var(--fr-gap-md);
  }

  .figma-research .fr-split {
    grid-template-columns: 1fr;
    gap: var(--fr-gap-lg);
  }

  .figma-research .fr-split--image-text .fr-split-media {
    order: 1;
  }

  .figma-research .fr-split--image-text .fr-split-copy {
    order: 2;
  }

  .figma-research .fr-explore-card {
    min-height: 0;
  }

  .figma-research .fr-explore-media {
    min-height: 160px;
  }
}

@media (min-width: 768px) and (max-width: 991.98px) {
  .figma-research {
    --fr-pad-inline: var(--iitd-pad-page, 40px);
  }
}

@media (max-width: 767.98px) {
  .figma-research {
    --fr-gap-section: 40px;
    --fr-pad-inline: 20px;
    gap: 40px;
  }

  .figma-research .fr-block--muted {
    padding-top: 40px;
    padding-bottom: 40px;
  }

  .figma-research .fr-hero {
    min-height: 300px;
  }

  .figma-research .fr-hero-content {
    padding-top: var(--fr-gap-extra);
    padding-bottom: var(--fr-gap-extra);
    gap: var(--fr-gap-md);
  }

  .figma-research .fr-hero-title {
    font-size: 24px;
    line-height: normal;
  }

  .figma-research .fr-bc-list {
    font-size: 12px;
    gap: var(--fr-gap-sm);
  }

  .figma-research .fr-intro-kicker {
    font-size: 18px;
  }

  .figma-research .fr-section-title,
  .figma-research .fr-heading {
    font-size: 22px;
    margin-bottom: var(--fr-gap-sm);
  }

  .figma-research .fr-events-grid {
    grid-template-columns: 1fr;
    gap: var(--fr-gap-md);
  }

  .figma-research .fr-event-body {
    padding: var(--fr-gap-ml);
  }

  .figma-research .fr-event-title {
    font-size: 17px;
  }

  .figma-research .fr-explore-grid {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 0;
    width: calc(100% + 2 * var(--fr-pad-inline));
    max-width: none;
    margin-left: calc(-1 * var(--fr-pad-inline));
    margin-right: calc(-1 * var(--fr-pad-inline));
    padding-left: var(--fr-pad-inline);
    padding-right: var(--fr-pad-inline);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-padding-left: var(--fr-pad-inline);
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    border: 0;
    background: transparent;
  }

  .figma-research .fr-explore-card {
    flex: 0 0 min(300px, calc(100vw - 2 * var(--fr-pad-inline) - 24px));
    scroll-snap-align: start;
    min-height: var(--fr-explore-row-h);
    border: 1px solid var(--fr-stroke-dark);
    justify-content: flex-end;
  }

  .figma-research .fr-explore-card + .fr-explore-card {
    margin-left: -1px;
  }

  .figma-research .fr-explore-media {
    min-height: 140px;
  }

  .figma-research .fr-explore-title {
    font-size: 20px;
  }

  .figma-research .fr-heading-row .fr-heading {
    font-size: 20px;
  }
}

/*
 * Mobile sticky header: push hero content below fixed header.
 * --site-header-offset is set from the header bar height in iitd-chrome-figma.css
 */
@media (max-width: 991.98px) {
  body.has-sticky-header .figma-research#main-content .fr-hero-content {
    padding-top: calc(var(--site-header-offset, 88px) + 24px);
  }
}