* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --baseline: 1.5rem;
  --baseline-half: calc(var(--baseline) / 2);
  --body-font: "Gothic A1", "Helvetica Neue", Arial, sans-serif;
  --body-font-size: 16px;
  --heading-font: "Gowun Batang", Georgia, "Times New Roman", serif;
}

html, body {
  font-size: var(--body-font-size);
}

body {
  font-family: var(--body-font);
  color: #e2e8f0;
  background-color: #030617;
  line-height: var(--baseline);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6,
.lab-name,
.pi-name,
.team-name {
  font-family: var(--heading-font);
}

body::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 15% 20%, rgba(79, 70, 229, 0.45), transparent 50%),
    radial-gradient(circle at 80% 10%, rgba(14, 165, 233, 0.35), transparent 45%),
    radial-gradient(circle at 30% 80%, rgba(236, 72, 153, 0.35), transparent 55%),
    radial-gradient(circle at 85% 75%, rgba(16, 185, 129, 0.3), transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(59, 130, 246, 0.2), transparent 60%);
  filter: blur(70px);
  z-index: -1;
}

body::after {
  content: "";
  position: fixed;
  inset: 10% 5% 0 0;
  pointer-events: none;
  background: url("skku_outline.svg") top left / clamp(320px, 60vw, 900px) auto no-repeat;
  opacity: 0.15;
  mix-blend-mode: screen;
  filter: drop-shadow(0 0 25px rgba(15, 23, 42, 0.6));
  z-index: -1;
}

a {
  color: #7dd3fc;
  text-decoration: none;
  transition: color 0.35s ease, background 0.35s ease;
}

a:hover {
  color: transparent;
  background-image: linear-gradient(120deg, #94a3ff, #0ea5e9, #22d3ee);
  background-size: 200% 100%;
  background-position: 0% 50%;
  -webkit-background-clip: text;
          background-clip: text;
  animation: linkGradient 1.4s ease forwards;
  text-decoration: none;
}

@keyframes linkGradient {
  0% {
    background-position: 0% 50%;
    opacity: 0.9;
  }
  50% {
    background-position: 100% 50%;
    opacity: 1;
  }
  100% {
    background-position: 0% 50%;
    opacity: 0.9;
  }
}

.container {
  width: min(1100px, 92%);
  margin: 0 auto;
}

.site-header {
  background: transparent;
  color: #f1f5f9;
  border-bottom: 1px solid rgba(148, 163, 184, 0.2);
  font-family: var(--heading-font);
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 0;
}

.site-header nav {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0;
}

.brand {
  display: flex;
  flex-direction: column;
}

.lab-name {
  font-size: 1.25rem;
  font-weight: 600;
}

.tagline {
  font-size: 0.9rem;
  color: #cbd5f5;
}

.fancy-amp {
font-family: Baskerville, 'Goudy Old Style', Palatino, 'Book Antiqua', serif;
font-style: italic;
font-weight: normal;
}

.site-header nav > a {
  position: relative;
  margin-left: 0;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  font-weight: 500;
  color: #cbd5f5;
  opacity: 0.9;
  transition: color 0.25s ease, background 0.25s ease, opacity 0.25s ease;
}

.site-header nav > a::after {
  content: "";
  position: absolute;
  left: 0.6rem;
  right: 0.6rem;
  bottom: 0.1rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(120deg, #94a3ff, #0ea5e9, #22d3ee);
  opacity: 0;
  transform: scaleX(0.2);
  transform-origin: center;
  transition: opacity 0.2s ease, transform 0.25s ease;
}

.site-header nav > a:hover,
.site-header nav > a:focus-visible {
  opacity: 1;
  color: #f8fafc;
}

.site-header nav > a:hover::after,
.site-header nav > a:focus-visible::after {
  opacity: 1;
  transform: scaleX(1);
}

.lang-switch {
  margin-left: 0.75rem;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lang-switch a {
  margin-left: 0;
  color: #e2e8f0;
  opacity: 0.85;
}

.lang-switch a:hover,
.lang-switch a:focus-visible {
  color: #7dd3fc;
  opacity: 1;
}

.lang-sep {
  color: rgba(203, 213, 245, 0.6);
}

main > section {
  padding: clamp(3rem, 6vw, 4.5rem) 0;
}

main > section + section {
  margin-top: clamp(2rem, 5vw, 3rem);
}

.hero {
  padding-top: clamp(3rem, 6vw, 4.5rem);
  padding-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.hero-layout {
  display: flex;
  gap: calc(var(--baseline) * 2);
  align-items: center;
}

.hero-content {
  flex: 2 1 0;
  max-width: none;
}

.hero-extra {
  position: relative;
  flex: 1 1 0;
  padding: clamp(0.5rem, 2vw, 1.5rem) 0;
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: stretch;
}

.structure-viewer {
  position: relative;
  width: 100%;
  height: clamp(260px, 40vw, 420px);
  border-radius: 1.5rem;
  overflow: hidden;
  background: radial-gradient(circle at 30% 30%, rgba(99, 102, 241, 0.35), transparent 60%),
    radial-gradient(circle at 70% 70%, rgba(14, 165, 233, 0.25), transparent 60%),
    rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(148, 163, 184, 0.25);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 25px 55px rgba(2, 6, 23, 0.45);
}

.structure-viewer__canvas-target {
  position: absolute;
  inset: 0;
}

.structure-viewer__canvas-target canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.structure-viewer__status {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: #cbd5f5;
  background: rgba(2, 6, 23, 0.65);
  transition: opacity 0.4s ease;
}

.structure-viewer[data-viewer-ready="true"] .structure-viewer__status {
  opacity: 0;
  pointer-events: none;
}

.structure-viewer[data-viewer-error="true"] .structure-viewer__status {
  background: rgba(15, 23, 42, 0.9);
  color: #fecdd3;
}

.structure-viewer__link {
  position: absolute;
  right: 1rem;
  bottom: 0.75rem;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(226, 232, 240, 0.75);
  text-decoration: none;
  transition: color 0.25s ease;
}

.structure-viewer__link:hover,
.structure-viewer__link:focus-visible {
  color: #fff;
}

.hero-extra a,
.pi-summary a {
  color: #bfdbfe;
}

.hero-highlight {
  font-size: 1.1rem;
  font-weight: 600;
}

.hero-extra-body {
  margin-bottom: var(--baseline);
  line-height: var(--baseline);
}

.hero-extra-link {
  font-size: 0.95rem;
  color: #cbd5f5;
  line-height: var(--baseline);
}

.hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  line-height: calc(var(--baseline) * 3);
  margin-bottom: var(--baseline);
  word-break: keep-all;
}

.kicker {
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 0.85rem;
  color: #94a3b8;
  line-height: var(--baseline);
  margin-bottom: var(--baseline-half);
}

.cta-group {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}
/* 
@keyframes noLinkGradient {
  0% {
    background-position: 0% 50%;
    opacity: 1;
  }
  50% {
    background-position: 100% 50%;
    opacity: 0.8;
  }
  100% {
    background-position: 0% 50%;
    opacity: 1;
  }
} */

.cta,
.secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: calc(var(--baseline) * 2);
  padding: 0 var(--baseline);
  border-radius: 999px;
  font-weight: 600;
  line-height: var(--baseline);
  transition: background 0.35s ease, color 0.35s ease, box-shadow 0.35s ease, transform 0.35s ease;
}

a.cta {
  background: linear-gradient(120deg, #6366f1, #0ea5e9);
  color: #fff;
  box-shadow: 0 10px 30px rgba(14, 165, 233, 0.35);
  /* animation: noLinkGradient 1.4s ease; */
}

.cta:hover,
.cta:focus-visible {
  color: #fff;
  background: linear-gradient(120deg, #6f74f7, #1fb2e7);
  box-shadow: 0 12px 32px rgba(14, 165, 233, 0.4);
}

.secondary {
  border: 1px solid rgba(148, 163, 184, 0.4);
  color: #e2e8f0;
}

.secondary:hover,
.secondary:focus-visible {
  border-color: rgba(148, 163, 184, 0.8);
  color: #fff;
  background: rgba(148, 163, 184, 0.15);
}

.section.muted {
  background: transparent;
}

.section {
  position: relative;
}

.section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(1100px, 92%);
  border-top: 1px solid rgba(148, 163, 184, 0.1);
}

main > .section:first-of-type::before {
  display: none;
}

.section.compact {
  padding-top: clamp(2rem, 4vw, 2.75rem);
  padding-bottom: clamp(2rem, 4vw, 2.75rem);
  margin-top: var(--baseline);
}

h1,
h2,
h3,
p,
li {
  margin-bottom: var(--baseline);
}

h1 {
  line-height: calc(var(--baseline) * 3);
}

h2 {
  line-height: calc(var(--baseline) * 2 + var(--baseline-half));
}

h3 {
  line-height: var(--baseline);
  margin-bottom: var(--baseline);
}

p,
li {
  line-height: var(--baseline);
}

.section .container > *:last-child {
  margin-bottom: 0;
}

.section:last-child {
  margin-bottom: 100px;
}

.section-list {
  display: flex;
  flex-direction: column;
  gap: var(--baseline);
}

.section-item {
  padding-bottom: var(--baseline);
}

.section-item:last-child {
  padding-bottom: 0;
}

.section-item > *:last-child {
  margin-bottom: 0;
}

.entry-meta {
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #94a3b8;
}

@media (max-width: 720px) {
  .site-header .container {
    flex-direction: column;
    gap: 0.75rem;
    text-align: center;
  }

  .site-header nav > a {
    margin: 0;
    padding: 0.25rem 0.55rem;
  }

  .site-header nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--baseline-half);
    padding: 0.25rem 0;
    border: 0;
    background: transparent;
    box-shadow: none;
  }

  .lang-switch {
    margin-left: 0;
  }

  .cta-group {
    flex-direction: column;
  }

  .hero-layout {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero h1 {
    line-height: calc(var(--baseline) * 2);
  }


  .hero-extra {
    width: 100%;
    /* min-height: clamp(200px, 60vw, 320px); */
  }

  .pi-layout {
    flex-direction: column;
  }
}
.pi-layout {
  display: flex;
  gap: calc(var(--baseline) * 2);
  align-items: stretch;
}

.pi-copy {
  flex: 3 1 0;
}

.pi-summary {
  flex: 1 1 1%;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--baseline-half);
}

.pi-video {
  margin-top: var(--baseline);
}

.video-frame {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  border-radius: 1rem;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.25);
  box-shadow: 0 25px 55px rgba(2, 6, 23, 0.4);
  background: #020617;
}

.video-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.pi-avatar {
  width: calc(var(--baseline) * 10);
  height: calc(var(--baseline) * 10);
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  overflow: hidden;
  margin-bottom: var(--baseline-half);
}

.pi-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.pi-name {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--baseline-half);
}

.pi-role {
  color: #cbd5f5;
  font-size: 0.95rem;
  margin-bottom: var(--baseline-half);
}

.team-grid {
  padding-top: var(--baseline);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(calc(var(--baseline) * 7), max-content));
  gap: var(--baseline);
  justify-content: center;
}

.team-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--baseline-half);
  text-align: center;
  background: transparent;
  border: 0;
  padding: 0;
  color: inherit;
  text-decoration: none;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.team-card:focus-visible {
  outline: 2px solid rgba(226, 232, 240, 0.65);
  outline-offset: 4px;
}

.team-card.is-active .team-avatar {
  border-color: rgba(226, 232, 240, 0.6);
  box-shadow: 0 0 0 3px rgba(148, 163, 184, 0.25);
}

.team-card.is-active .team-name {
  color: #f8fafc;
}

.team-card.placeholder .team-name,
.team-card.placeholder .team-title {
  color: rgba(226, 232, 240, 0.6);
}

.team-avatar {
  width: calc(var(--baseline) * 7);
  height: calc(var(--baseline) * 7);
  border-radius: 50%;
  border: 1px solid rgba(148, 163, 184, 0.25);
  display: grid;
  place-items: center;
  font-weight: 600;
  font-size: 1rem;
  color: #e2e8f0;
  background: rgba(2, 6, 23, 0.35);
  overflow: hidden;
}

.team-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.team-avatar-initials {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.team-avatar.placeholder {
  color: rgba(226, 232, 240, 0.4);
  border-style: dashed;
}

.team-name {
  font-weight: 600;
  margin-bottom: 0;
}

.team-title {
  color: #cbd5f5;
  margin-bottom: 0;
}

.team-details {
  margin-top: calc(var(--baseline) * 2);
  display: grid;
  gap: var(--baseline);
}

.page-spacer {
  width: 100%;
  height: 260px;
}

.team-detail {
  padding: calc(var(--baseline) * 1.5);
  border-radius: 1rem;
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: rgba(15, 23, 42, 0.5);
  box-shadow: 0 20px 45px rgba(2, 6, 23, 0.35);
}

.team-detail[hidden] {
  display: none;
}

.team-detail .pi-summary {
  gap: var(--baseline-half);
}

.team-orgs {
  display: grid;
  gap: 0.35rem;
  font-size: 0.9rem;
  color: #cbd5f5;
  text-align: center;
}

.team-orgs a {
  color: inherit;
}

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

.team-education {
  margin-top: var(--baseline);
}

.team-education-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--baseline-half);
}

.team-education-list li {
  display: grid;
  gap: 0.25rem;
}

.team-education-course {
  font-weight: 600;
}

.team-education-institution {
  color: #cbd5f5;
}

.team-education-year {
  color: rgba(226, 232, 240, 0.6);
  font-size: 0.9rem;
}

.pi-links {
  display: flex;
  justify-content: center;
}

.pi-summary * {
  margin-top: 0 !important;
  margin-bottom: 0 !important;
}

.pi-links a {
  width: calc(var(--baseline) * 2.5);
  height: calc(var(--baseline) * 2.5);
  border-radius: 999px;
  /* border: 1px solid rgba(148, 163, 184, 0.35); */
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: #cbd5f5;
  /* background: rgba(15, 23, 42, 0.35); */
}

.pi-links a:hover {
  background: rgba(59, 130, 246, 0.4);
}

.pi-links i {
  font-size: 1.5rem;
}

.big-icon {
  font-size: 1.1rem;
}
.software-grid {
  display: grid;
  gap: var(--baseline);
}

.software-grid .secondary {
  margin-right: var(--baseline-half);
}

.software-card {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: var(--baseline);
  align-items: center;
  padding: var(--baseline) 0;
}

.software-card img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.software-card h3 {
  margin-bottom: var(--baseline-half);
}

.software-card p {
  margin-bottom: var(--baseline);
}

.pub-list {
  list-style: none;
  padding: 0;
  margin-top: var(--baseline);
  display: flex;
  flex-direction: column;
  gap: var(--baseline);
}

.pub-list li {
  padding-bottom: 0;
  margin-bottom: 0;
}

.pub-title {
  font-weight: 600;
  margin-bottom: var(--baseline-half);
}

.pub-meta {
  color: #cbd5f5;
  font-size: 0.95rem;
  margin-bottom: 0;
}

.copy-bibtex {
  display: inline-flex;
  align-items: center;
  padding: 0;
  font-size: 0.95rem;
  border: none;
  background: none;
  color: #7dd3fc;
  cursor: pointer;
  transition: color 0.25s ease;
  margin-left: 0.35rem;
}

.copy-bibtex:hover:not(:disabled) {
  color: #94a3ff;
  text-decoration: underline;
}

.copy-bibtex:disabled {
  opacity: 0.7;
  cursor: default;
}

.show-more-pubs {
  margin-top: var(--baseline);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 1.25rem;
  font-size: 0.9rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: transparent;
  color: #e2e8f0;
  cursor: pointer;
  transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.show-more-pubs:hover:not(:disabled) {
  border-color: rgba(56, 189, 248, 0.8);
  color: #7dd3fc;
}

.show-more-pubs:disabled {
  opacity: 0.6;
  cursor: default;
}

.pub-note {
  margin-top: var(--baseline);
  font-size: 0.85rem;
  color: #94a3b8;
}

.contact-list {
  margin: var(--baseline) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.6rem;
}

.contact-list li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  color: #e2e8f0;
  margin-bottom: var(--baseline-half);
}

.contact-list i {
  color: #7dd3fc;
  margin-top: 0.15rem;
  font-size: 1rem;
}

.contact-list a {
  color: inherit;
  text-decoration: none;
}

.contact-list a:hover,
.contact-list a:focus {
  color: #7dd3fc;
}

.contact-address-trigger {
  padding: 0;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.contact-address-trigger:hover,
.contact-address-trigger:focus {
  color: #7dd3fc;
}

.contact-map {
  margin-top: var(--baseline);
  width: 100%;
  height: clamp(240px, 45vw, 360px);
  border-radius: 1rem;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.2);
  box-shadow: 0 25px 55px rgba(2, 6, 23, 0.4);
}

.contact-map .leaflet-control-container .leaflet-bottom.leaflet-left {
  margin-bottom: 0.5rem;
  margin-left: 0.5rem;
}

.contact-map .leaflet-popup-content-wrapper,
.contact-map .leaflet-popup-tip {
  background: rgba(2, 6, 23, 0.9);
  color: #f8fafc;
  border: 1px solid rgba(148, 163, 184, 0.2);
}

.contact-map .leaflet-popup-content {
  margin: 0.85rem 1rem;
  min-width: 220px;
  line-height: 1.35;
}

.contact-map .leaflet-popup-content .map-popup-title {
  font-weight: 600;
  margin-bottom: 0.55rem;
}

.contact-map .leaflet-popup-content .map-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.4rem 0.55rem;
}

.contact-map .leaflet-popup-content .map-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.35rem 0.55rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.3);
  background: rgba(15, 23, 42, 0.65);
  color: #e2e8f0;
  font-size: 0.8rem;
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.contact-map .leaflet-popup-content .map-links a:hover,
.contact-map .leaflet-popup-content .map-links a:focus {
  border-color: rgba(125, 211, 252, 0.9);
  color: #7dd3fc;
  background: rgba(2, 6, 23, 0.75);
}