:root {
  --accent: #557758;
  --accent-light: #81A684;
  --accent-dark: #56345B;
  --accent-mid: #94599B;
  --sand: #E7E2DA;
  --ink: #202020;
  --ink-light: #66615c;
  --white: #fff;
  --off-white: #fbfaf8;
  --rule: rgba(32, 32, 32, 0.12);
  --tag-bg: rgba(129, 166, 132, 0.12);
  --nav-h: 84px;
  --container: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'DM Sans', system-ui, sans-serif;
  font-weight: 300;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 2px; }

h1, h2, h3, .nav-logo, .footer-brand-name {
  font-family: 'Playfair Display', Georgia, serif;
}

.container, .container--narrow {
  width: min(var(--container), calc(100% - 48px));
  margin: 0 auto;
}

.container--narrow { width: min(860px, calc(100% - 48px)); }

#site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--accent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.14);
  box-shadow: 0 2px 14px rgba(0, 0, 0, 0.12);
  transition: border-color 0.3s;
}
#site-nav.scrolled {
  border-bottom-color: var(--rule);
}

.nav-inner {
  width: min(var(--container), calc(100% - 48px));
  margin: 0 auto;
  min-height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.nav-logo {
  color: white;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  text-decoration: none;
}
.nav-logo:hover { opacity: 0.85; }

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 26px;
  margin: 0;
  padding: 0;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.nav-links a {
  color: var(--sand);
  text-decoration: none;
  padding: 6px 0;
  font-weight: 600;
}
.nav-links a:hover,
.nav-cta:hover{
  color: white;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 9px 14px;
  border: 1px solid var(--accent-light);
  border-radius: 3px;
  color: white;
  text-decoration: none;
  font-size: 0.88rem;
}
.nav-cta:hover {
  background: white;
  color:  var(--accent);
}
/* Mobile toggle button */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--ink);
  transition: 0.3s;
}

/* Mobile breakpoint */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(255,255,255,0.97);
    border-bottom: 1px solid var(--rule);
    padding: 20px 24px;
    gap: 18px;
  }

  .nav-links.is-open {
    display: flex;
  }
}
.section {
  padding: 72px 0;
}
.section--tinted {
  background: #fbfaf8;
  border-top: 1px solid var(--rule);
}
.section--ruled {
  background: var(--white);
  border-top: 1px solid var(--rule);
}

.section-header--simple {
  margin-bottom: 32px;
}

.section-link--below {
  display: block;
  text-align: right;
  margin-top: 24px;
}

.home-button-grid {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(3, 0.5fr);
  gap: 98px;
}

.home-button {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 72px;
  border: 1px solid var(--ink);
  border-radius: 22px;
  background: var(--accent-light);
  color: var(--ink);
  text-decoration: none;
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.2rem;
  font-weight: 900;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}

.home-button:hover {
  background: var(--sand);
  border-color: var(--ink);
  color: var(--accent);
}

.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.9rem;
  font-weight: 900;
  color: var(--accent-light);
  margin-bottom: 10px;
}

.section-title, .page-title, .hero-title, h1, h2, h3 {
  margin-top: 0;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 56px;
  width: min(var(--container), calc(100% - 48px));
  margin: 0 auto;
  padding: 54px 0 78px;
}
.hero-grid--centered {
  display: block;
  width: min(var(--container), calc(100% - 48px));
  margin: 0 auto;
  padding: 72px 0 0;
}

.hero-title {
  font-size: clamp(2.2rem, 4.5vw, 3.8rem);
  line-height: 1.1;
  margin-bottom: 20px;
}

.hero-text--centered {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
  padding: 48px 0 72px;
  position: relative;
  z-index: 2;
}

.hero-institution {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-light);
  margin-bottom: 18px;
}

.hero-intro {
  max-width: 60ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink-light);
  margin: 0 auto;
}

.hero-divider-band {
  position: relative;
  z-index: 1;
  height: 320px;
  overflow: hidden;
  background: transparent;
}

.hero-divider-band-inner {
  position: sticky;
  top: calc(var(--nav-h) + 24px);
  height: 320px;
  background: url('/assets/images/hero/sq_image275.jpg') center/cover no-repeat;
  border-top: 1px solid rgba(255,255,255,0.14);
  border-bottom: 1px solid rgba(255,255,255,0.14);
  box-shadow: 0 12px 32px rgba(0,0,0,0.08);
}

.research-grid, .technique-grid, .full-team-grid, .news-strip {
  display: grid;
  gap: 32px;
}
.research-grid { grid-template-columns: repeat(3, 1fr); }
.research-grid--page { grid-template-columns: repeat(3, 1fr); }
.technique-grid { grid-template-columns: repeat(3, 1fr); }
.full-team-grid { grid-template-columns: repeat(3, 1fr); gap: 32px; max-width: 480px; }
.news-strip { grid-template-columns: repeat(3, 1fr); overflow-x: auto; }

.research-card, .technique-card, .member-card, .news-card, .news-article, .team-callout {
  border: 1px solid var(--rule);
  border-radius: 2px;
  background: #fff;
}

.research-card, .technique-card, .member-card, .news-card, .news-article {
  overflow: hidden;
}
.research-card-image, .technique-card-image, .news-card-img, .member-photo, .pub-thumb {
  aspect-ratio: 3/2;
  background: var(--sand);
  overflow: hidden;
}
.news-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.news-card-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.news-card-link:hover .news-card {
  box-shadow: 0 6px 18px rgba(0,0,0,0.08);
  transform: translateY(-2px);
  transition: 0.2s;
}

.research-card-body, .technique-card-body, .news-card-body {
  padding: 10px;
}
.research-card h3, .technique-card h3, .news-card-title {
  font-size: 1rem;
  margin-bottom: 10px;
}
.research-card p, .technique-card p, .news-card-excerpt {
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--ink-light);
}

#research {
  position: relative;
  z-index: 3;
  margin-top: -80px;
}

.research-feature {
  display: grid;
  grid-template-columns: 1fr;
  gap: 56px;
  align-items: start;
  padding: 40px 0;
  border-bottom: 1px solid var(--rule);
}

.research-feature:last-child {
  border-bottom: none;
}

.research-feature--reversed {
  direction: rtl;
  text-align: left;
}

.research-feature--reversed > * {
  direction: ltr;
  text-align: left;
}

.research-feature-image {
  aspect-ratio: 4/3;
  background: var(--sand);
  border-radius: 2px;
  overflow: hidden;
}

.research-feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.research-feature-body {}

.research-feature-body h3 {
  font-size: 1.4rem;
  margin-bottom: 14px;
}

.research-feature-body p {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--ink-light);
}

@media (max-width: 900px) {
  .research-feature {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .research-feature--reversed {
    direction: ltr;
  }
}

.content-block {
  margin-bottom: 32px;
}

.content-block + .content-block--white {
  margin-top: -32px;
}

.content-block:last-child {
  margin-bottom: 0;
}

.content-block--ruled {
  border-bottom: 1px solid var(--rule);
  padding-bottom: 32px;
}

.content-block--white {
  background: var(--white);
  border-top: 1px solid var(--rule);
  padding: 42px 0;
  margin: 0 calc(-50vw + 50%);
  padding-left: calc(50vw - 50%);
  padding-right: calc(50vw - 50%);
}

/* Team card */
.member-photo {
  width: 100%;
  aspect-ratio: 3/4;
  background: var(--sand);
  overflow: hidden;
  border-radius: var(--card-radius);
  margin-bottom: 14px;
}

.member-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Empty placeholder photo — sand background, no broken image */
.member-photo--empty {
  background: linear-gradient(135deg, var(--sand), var(--accent-light));
}

.member-name {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.member-role {
  font-size: 0.82rem;
  color: var(--ink-light);
}

/* Team callout box */
.team-callout {
  background: var(--off-white);
  border: 1px solid var(--rule);
  border-radius: var(--card-radius);
  padding: 48px;
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.team-callout h2 {
  font-size: 1.8rem;
  margin-bottom: 12px;
}

.team-callout p {
  color: var(--ink-light);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 28px;
}

.pub-item {
  padding: 20px;
}
.pub-item-main {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 18px;
  align-items: start;
}
.pub-thumb { width: 120px; aspect-ratio: 1/1; overflow: hidden; }
.pub-title-full {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.45;
  margin-bottom: 6px;
}
.pub-authors, .pub-doi {
  color: var(--ink-light);
  font-size: 0.88rem;
}
.pub-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
  align-items: center;
}
.pub-journal {
  display: inline-flex;
  align-items: center;
  background: var(--tag-bg);
  color: var(--accent);
  padding: 3px 10px;
  border-radius: 3px;
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.pub-link {
  display: inline-block;
  margin-top: 14px;
  color: var(--accent);
  text-decoration: none;
}
.pub-link:hover { color: var(--accent); }


/* News feature — mirrors research-feature pattern */
.news-feature {
  display: grid;
  grid-template-columns: 1fr 4fr;
  gap: 56px;
  align-items: start;
  padding: 40px 0;
  border-bottom: 1px solid var(--rule);
  scroll-margin-top: calc(var(--nav-h) + 20px)
}

.news-feature:first-child {
  border-top: 1px solid var(--rule);
}

.news-feature:last-child {
  border-bottom: none;
}

.news-feature--reversed {
  direction: rtl;
}

.news-feature--reversed > * {
  direction: ltr;
  text-align: left;
}

.news-feature-image {
  aspect-ratio: 4/3;
  background: var(--sand);
  border-radius: var(--card-radius);
  overflow: hidden;
}

.news-feature-image img,
.news-feature-image-placeholder {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-feature-image-placeholder {
  background: linear-gradient(135deg, var(--sand), var(--accent-light));
}

.news-feature-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.news-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--tag-bg);
  color: var(--accent);
  padding: 3px 10px;
  border-radius: 3px;
}

.news-feature-title {
  font-size: 1.3rem;
  margin-bottom: 14px;
  line-height: 1.3;
}

.news-feature-body-text {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--ink-light);
  margin: 0;
}

@media (max-width: 900px) {
  .news-feature {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .news-feature--reversed {
    direction: ltr;
  }
}

/* Contact layout — text left, map right */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 64px;
  align-items: start;
}

.contact-intro {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--ink-light);
  margin-bottom: 32px;
}

.contact-info-block {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-info-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contact-info-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-light);
}

.contact-info-item a {
  color: var(--accent);
  font-size: 0.95rem;
}

.contact-info-item a:hover {
  text-decoration: underline;
}

address {
  font-style: normal;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--ink);
}

/* Map */
.map-embed {
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: var(--card-radius);
  overflow: hidden;
  border: 1px solid var(--rule);
}

.map-embed iframe {
  width: 100%;
  height: 100%;
  display: block;
}

/* Opportunities grid */
.opportunities-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.opportunity-card {
  background: var(--off-white);
  border: 1px solid var(--rule);
  border-radius: var(--card-radius);
  padding: 28px 32px;
}

.opportunity-card h3 {
  font-size: 1.1rem;
  margin-bottom: 12px;
  color: var(--ink);
}

.opportunity-card p {
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--ink-light);
  margin: 0;
}

/* Responsive */
@media (max-width: 900px) {
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .opportunities-grid {
    grid-template-columns: 1fr;
  }
}

.page-hero {
  padding: calc(var(--nav-h) + 20px) 0 32px;
  border-bottom: 1px solid var(--rule);
}
.page-title {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  line-height: 1.05;
  margin-bottom: 0;
}

.pi-section, .contact-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 36px;
  align-items: start;
}
.pi-photo {
  aspect-ratio: 3/4;
  background: var(--sand);
  overflow: hidden;
  border-radius: 2px;
}

.pi-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.pi-label {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 3px;
  background: var(--accent);
  color: white;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.pi-name {
  margin: 10px 0 4px;
  font-size: 1.8rem;
}

.pi-title, .member-role, .member-project, .footer-brand-desc, .news-date {
  color: var(--ink-light);
}

.pi-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.pi-link {
  text-decoration: none;
  padding: 6px 12px;
  border: 1px solid var(--rule);
  border-radius: 3px;
  font-size: 0.82rem;
}
.pi-link:hover {
  background: var(--sand);
}

.alumni-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
.alumni-table th, .alumni-table td {
  text-align: left;
  padding: 12px 10px;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
.alumni-table th {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-light);
}

/* Publications page */
.pub-scholar-link {
  margin-bottom: 30px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--rule);
  font-size: 0.95rem;
  color: var(--ink-light);
}

.pub-scholar-link a {
  color: var(--accent);
  font-weight: 500;
}

.pub-list {
  display: flex;
  flex-direction: column;
}

.pub-year-group {
  margin-bottom: 56px;
}

.pub-year-heading {
  font-size: 1.2rem;
  color: var(--accent);
  padding-bottom: 10px;
  margin-bottom: 0;
}

/* Override old pub-item-main grid — no image so full width */
.pub-item {
  display: flex;
  justify-content: space-between;
  align-items: start;
  padding: 20px 0;
  gap: 24px;
}

.pub-item-body {
  flex: 1;
}

.pub-title-full {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 6px;
  font-family: 'Playfair Display', Georgia, serif;
}

.pub-authors {
  font-size: 0.84rem;
  color: var(--ink-light);
  margin-bottom: 8px;
  line-height: 1.6;
}

/* Bold the PI name in author lists — add to publications.json
   by wrapping name in <strong> tags if desired */
.pub-authors strong {
  color: var(--ink);
  font-weight: 500;
}

.btn {
  display: inline-block;
  padding: 20px 32px;
  border-radius: 4px;
  text-decoration: none;
  border: 1px solid var(--rule);
  font-size: 0.88rem;
  font-family: 'Playfair Display', Georgia, serif;
  font-weight: 900;
  transition: background 0.2s, border-color 0.2s, color 0.2s;
}
.btn--primary {
  background: var(--accent-light);
  color: var(--ink);
  border-color: var(--ink);
}

.btn--primary:hover {
  background: var(--sand);
  color: var(--accent);
  border-color: var(--ink);
}
.btn--ghost {
  background: transparent;
}
.btn--ghost:hover { background: var(--sand); }

footer {
  background: var(--accent);
  color: var(--sand);
  padding: 64px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1.4fr;
  gap: 48px;
  width: min(var(--container), calc(100% - 38px));
  margin: 0 auto;
  margin-bottom: 28px;
  padding: 36px 0 28px;
  border-top: 1px solid var(--sand);
}
.footer-brand-name {
  font-family: 'Playfair Display', serif;
  font-size: 1.4rem;
  font-weight: 900;
  color: white;
  margin-bottom: 12px;
}

.footer-brand-desc {
  font-size: 0.84rem;
  line-height: 1.7;
  max-width: 280px;
  margin-bottom: 24px;
  color: var(--sand);
}

.footer-col-title {
  font-family: 'DM Sans Bold', sans-serif;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: white;
  margin-bottom: 16px;
}
.footer-links {
  list-style: none;
  font-weight: 400;
  margin: 0;
  padding: 0;
  font-size: 0.92rem;
}

.footer-links li {
  margin: 0 0 8px;
}

.footer-links li +li {
  margin-top: 14px;
}

.footer-links a {
  text-decoration: none;
  font-size: 0.84rem;
  color: var(--sand);
  transition: color 0.2s;
}
.footer-links a:hover {
  color: white;
}
.footer-bottom {
  width: min(var(--container), calc(100% - 48px));
  margin: 0 auto;
  padding: 10px 0 28px;
  display: flex;
  border-top: 1px solid var(--sand);
  font-size: 0.82rem;
  color: var(--sand);
  justify-content: space-between;
  align-items: center;
}

@media (max-width: 900px) {
  .nav-inner {
    min-height: 76px;
    flex-wrap: wrap;
    padding: 10px 0;
  }
  .nav-links {
    flex-wrap: wrap;
    gap: 14px;
    font-size: 0.84rem;
  }
  .hero-grid, .research-grid, .technique-grid, .full-team-grid, .news-strip, .footer-grid, .pi-section, .contact-grid {
    grid-template-columns: 1fr;
  }
  .hero-image-stack {
    min-height: 380px;
  }
  .hero-divider-band {
    height: 360px;
  }
  .hero-divider-band-inner {
    height: 360px;
  }
  .home-button-grid {
    grid-template-columns: 1fr;
  }
  #research {
    margin-top: -56px;
  }
}