/* IAS-supplied reference direction — structural visual system */
:root {
  --navy: #0a2d55;
  --navy-soft: #143f6b;
  --blue: #1769aa;
  --gold: #c79519;
  --gold-light: #e0b94c;
  --paper: #f7f3ea;
  --paper-soft: #fcfaf5;
  --mist: #edf3f8;
  --ink: #132943;
  --slate: #5b6a79;
  --line: rgba(19, 41, 67, 0.14);
  --line-light: rgba(252, 250, 245, 0.26);
  --shadow: 0 18px 42px rgba(27, 46, 65, 0.11);
}

body {
  color: var(--ink);
  background: var(--mist);
  font-size: 16px;
  line-height: 1.62;
}

.site-header {
  height: 72px;
  color: var(--navy);
  background: rgba(252, 250, 245, 0.94);
  border-bottom: 1px solid rgba(19, 41, 67, 0.1);
  backdrop-filter: blur(18px) saturate(1.05);
  transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

body[data-route="home"] .site-header:not(.is-scrolled) {
  color: var(--paper-soft);
  background: rgba(8, 18, 27, 0.08);
  border-bottom-color: rgba(252, 250, 245, 0.14);
}

.header-inner {
  width: min(1240px, calc(100% - 72px));
  gap: 22px;
}

.brand {
  min-width: 185px;
  gap: 0;
  color: inherit;
}

.brand-mark { display: none; }
.brand-copy { gap: 0; }

.brand-name {
  color: inherit;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.brand-role {
  color: var(--gold);
  font-size: 8px;
  font-weight: 600;
  letter-spacing: 0.14em;
}

body[data-route="home"] .site-header:not(.is-scrolled) .brand-role { color: #e5bd38; }

.nav-trigger,
.nav-direct {
  min-height: 42px;
  padding: 0 11px;
  color: inherit;
  text-transform: none;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.nav-trigger::after {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--gold);
}

.nav-trigger:hover,
.nav-trigger:focus-visible,
.nav-direct:hover,
.nav-direct:focus-visible,
.nav-group.is-open > .nav-trigger {
  color: var(--blue);
  background: transparent;
}

body[data-route="home"] .site-header:not(.is-scrolled) .nav-trigger:hover,
body[data-route="home"] .site-header:not(.is-scrolled) .nav-trigger:focus-visible,
body[data-route="home"] .site-header:not(.is-scrolled) .nav-direct:hover,
body[data-route="home"] .site-header:not(.is-scrolled) .nav-direct:focus-visible,
body[data-route="home"] .site-header:not(.is-scrolled) .nav-group.is-open > .nav-trigger { color: var(--gold-light); }

.dropdown {
  top: calc(100% + 8px);
  min-width: 230px;
  padding: 8px;
  color: var(--navy);
  background: var(--paper-soft);
  border-top: 2px solid var(--gold);
  box-shadow: 0 16px 36px rgba(10, 45, 85, 0.16);
}

.dropdown a { padding: 10px 12px; font-size: 13px; }
.menu-toggle { color: var(--navy); border-color: rgba(10, 45, 85, 0.34); }
body[data-route="home"] .site-header:not(.is-scrolled) .menu-toggle { color: var(--paper-soft); border-color: rgba(252, 250, 245, 0.56); }
main { padding-top: 0; }
.container { width: min(1120px, calc(100% - 72px)); }
.container-wide { width: min(1240px, calc(100% - 72px)); }

.hero {
  min-height: 100svh;
  align-items: flex-end;
  background: #101315;
}

.hero-media img { object-position: center 47%; }
.hero-media::after { background: rgba(6, 13, 20, 0.27); }

.hero-content {
  width: min(1240px, calc(100% - 72px));
  padding: 120px 0 56px;
}

.hero-copy {
  max-width: 510px;
  padding-left: 22px;
  border-left: 2px solid var(--gold-light);
  text-shadow: 0 2px 22px rgba(0, 0, 0, 0.72);
}

.hero .eyebrow { color: #e9c756; }

.hero h1 {
  max-width: 500px;
  margin: 11px 0 10px;
  font-size: clamp(35px, 4vw, 56px);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.035em;
}

.hero-tagline {
  max-width: 500px;
  font-size: clamp(17px, 1.7vw, 23px);
  line-height: 1.35;
}

.hero-actions { gap: 24px; margin-top: 20px; }

.hero .button {
  min-height: 34px;
  padding: 0;
  border: 0;
  border-bottom: 1px solid rgba(252, 250, 245, 0.72);
  color: var(--paper-soft);
  background: transparent;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
}

.hero .button:hover,
.hero .button:focus-visible {
  color: var(--gold-light);
  background: transparent;
  border-bottom-color: var(--gold-light);
}

.hero-social { display: none; }

.hero::before {
  content: "Scroll";
  position: absolute;
  z-index: 3;
  left: 50%;
  bottom: 26px;
  color: rgba(229, 189, 56, 0.88);
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  transform: translateX(-50%);
}

.hero::after {
  content: "";
  position: absolute;
  z-index: 3;
  left: 50%;
  bottom: 0;
  width: 1px;
  height: 20px;
  background: rgba(229, 189, 56, 0.7);
}

.quick-links {
  color: var(--navy);
  background: var(--paper-soft);
  border-top: 0;
  border-bottom: 1px solid var(--line);
}

.quick-links .container-wide { grid-template-columns: repeat(5, minmax(0, 1fr)); }

.quick-link,
.quick-link:first-child {
  min-height: 58px;
  padding: 0 20px;
  color: #4d5b67;
  border-color: var(--line);
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
}

.quick-link:hover,
.quick-link:focus-visible { color: var(--blue); background: var(--mist); }
.section { padding: clamp(66px, 7vw, 98px) 0; }
.section-light { background: var(--mist); }
[data-page="home"] > .section-light:nth-of-type(even) { background: var(--paper-soft); }

.section-dark,
.section-blue {
  color: var(--ink);
  background: #e7eef5;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-dark .lede,
.section-blue .lede,
.section-dark .feed-card .meta,
.section-blue .feed-card .meta { color: var(--slate); }

.section-dark .button-ghost,
.section-blue .button-ghost { color: var(--navy); border-color: rgba(10, 45, 85, 0.3); background: transparent; }
.section-dark .button-ghost:hover,
.section-blue .button-ghost:hover,
.section-dark .button-ghost:focus-visible,
.section-blue .button-ghost:focus-visible { color: var(--paper-soft); background: var(--navy); }

.section-heading,
.section-heading.small,
.intro-statement { font-weight: 500; letter-spacing: -0.025em; }
.section-heading.small { font-size: clamp(30px, 3.5vw, 47px); }
.intro-grid { grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.8fr); gap: clamp(48px, 7vw, 90px); }
.intro-statement { font-size: clamp(36px, 4.5vw, 58px); }
.intro-copy > p:first-child { font-size: clamp(18px, 1.7vw, 22px); }
.feed-grid { gap: 16px; }

.feed-card {
  min-height: 275px;
  background: var(--paper-soft);
  border: 1px solid rgba(19, 41, 67, 0.12);
  box-shadow: 0 8px 24px rgba(27, 46, 65, 0.05);
}

.feed-card p { font-family: var(--font-ui); font-size: 17px; line-height: 1.55; }
.events-grid { grid-template-rows: repeat(2, 210px); }
.event-caption { background: rgba(10, 45, 85, 0.82); }

.fact-card,
.info-card,
.board-card,
.social-card {
  color: var(--ink);
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-top: 1px solid var(--line);
  box-shadow: 0 8px 24px rgba(27, 46, 65, 0.05);
}

.fact-card::before,
.info-card::before,
.social-card::before {
  content: "";
  display: block;
  width: 32px;
  height: 2px;
  margin-bottom: 22px;
  background: var(--gold);
}

.fact-number { font-size: 35px; }

.page-hero {
  min-height: 330px;
  display: flex;
  align-items: flex-end;
  color: var(--navy);
  background-color: var(--paper);
  background-image: url("/assets/reference-site/header-bg-light.png");
  background-repeat: no-repeat;
  background-position: center 48%;
  background-size: cover;
  border-bottom: 1px solid rgba(10, 45, 85, 0.13);
}

.page-hero .container { padding-top: 132px; padding-bottom: 43px; }
.page-hero .eyebrow { color: #8f6a05; }

.page-hero h1 {
  max-width: 850px;
  margin: 10px 0 12px;
  color: var(--navy);
  font-size: clamp(38px, 4.7vw, 62px);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.035em;
}

.page-hero p { max-width: 680px; color: #546578; font-size: clamp(15px, 1.5vw, 19px); }
.split-grid { grid-template-columns: 330px minmax(0, 1fr); gap: clamp(50px, 7vw, 90px); }

.profile-portrait {
  top: 98px;
  aspect-ratio: 4 / 5;
  padding: 10px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.profile-portrait img { object-position: 66% center; }
.prose > p:first-child { font-size: clamp(24px, 2.6vw, 34px); }

.quote-panel,
.empty-state {
  color: var(--ink);
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
}

.empty-state p { color: var(--slate); }
.timeline { max-width: 1040px; padding-left: 30px; border-left: 2px solid rgba(199, 149, 25, 0.55); }
.timeline-item { grid-template-columns: 180px 1fr; padding: 29px 0; border-top-color: var(--line); }
.board-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.board-card {
  min-height: 150px;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 22px;
  align-items: start;
}

.board-card .section-index { margin: 3px 0 0; }
.filter-row { margin-bottom: 30px; padding-bottom: 13px; border-bottom: 1px solid var(--line); }

.filter-button {
  border: 0;
  border-bottom: 2px solid transparent;
  font-family: var(--font-ui);
  font-size: 11px;
}

.filter-button[aria-pressed="true"],
.filter-button:hover,
.filter-button:focus-visible { color: var(--navy); border-color: var(--gold); background: transparent; }

.gallery-grid {
  display: block;
  columns: 4;
  column-gap: 14px;
}

.gallery-item {
  min-height: 0;
  margin: 0 0 14px;
  break-inside: avoid;
  padding: 7px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
}

.gallery-item img { height: auto; min-height: 0; object-fit: contain; }
.gallery-item figcaption { position: static; padding: 10px 6px 5px; color: var(--slate); background: transparent; font-size: 11px; opacity: 1; }

.writing-grid {
  max-width: 940px;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}

.writing-card {
  min-height: 0;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  color: var(--ink);
  background: var(--paper-soft);
  border: 0;
  border-bottom: 1px solid var(--line);
}

.writing-card img { height: 100%; min-height: 170px; aspect-ratio: auto; object-fit: cover; }
.writing-card-body { padding: 24px 28px; }
.writing-card h2 { font-size: clamp(22px, 2vw, 28px); }
.talks-list, .press-list { background: var(--paper-soft); }
.publication-placeholder { color: var(--ink); }
.book-outline { background: var(--paper-soft); border-color: rgba(10, 45, 85, 0.25); }
.book-outline-inner { color: var(--navy); border-color: rgba(199, 149, 25, 0.6); }

.contact-grid {
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  padding: 34px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
}

.social-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.site-footer { color: var(--paper-soft); background: #0a2d55; border-top-color: rgba(224, 185, 76, 0.45); }

@media (max-width: 1180px) {
  .header-inner { width: min(100% - 48px, 1120px); }
  .gallery-grid { columns: 3; }
}

@media (max-width: 899px) {
  .site-header { height: 64px; }
  .menu-toggle {
    position: relative;
    z-index: 2;
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    min-width: 58px;
    color: var(--navy);
    background: rgba(247, 243, 234, 0.9);
    border: 1px solid rgba(10, 45, 85, 0.34);
  }
  body[data-route="home"] .site-header:not(.is-scrolled) .menu-toggle {
    color: var(--paper-soft);
    background: rgba(10, 45, 85, 0.58);
    border-color: rgba(252, 250, 245, 0.7);
  }
  .header-inner, .container, .container-wide, .hero-content { width: min(100% - 36px, 1120px); }
  .brand-name { font-size: 15px; }
  .brand-role { display: block; font-size: 7px; }
  .hero { min-height: 100svh; }
  .hero-media img { object-position: 63% center; }
  .hero-media::after { background: rgba(6, 13, 20, 0.2); }
  .hero-content { padding-bottom: 48px; }
  .hero-copy { max-width: 390px; }
  .hero h1 { font-size: clamp(34px, 8vw, 52px); }
  .quick-links .container-wide { width: 100%; display: flex; overflow-x: auto; }
  .quick-link, .quick-link:first-child, .quick-link:nth-child(4), .quick-link:nth-child(5) { min-width: 150px; border-top: 0; }
  .quick-link:nth-child(5) { grid-column: auto; }
  .page-hero { min-height: 285px; background-position: 62% center; }
  .page-hero .container { padding-top: 112px; padding-bottom: 34px; }
  .page-hero h1 { font-size: clamp(36px, 8vw, 54px); }
  .split-grid, .contact-grid, .intro-grid, .publication-placeholder { grid-template-columns: 1fr; }
  .profile-portrait { max-width: 430px; }
  .gallery-grid { columns: 2; }
  .writing-card { grid-template-columns: 210px minmax(0, 1fr); }
}

@media (max-width: 620px) {
  .header-inner, .container, .container-wide, .hero-content { width: min(100% - 28px, 1120px); }
  .hero-media img { object-position: 61% center; }
  .hero-copy { display: none; }
  .hero::before { bottom: 24px; }
  .page-hero { min-height: 245px; background-position: 66% center; }
  .page-hero .container { padding-top: 96px; padding-bottom: 25px; }
  .page-hero h1 { max-width: 82%; margin-top: 7px; font-size: clamp(32px, 10vw, 45px); }
  .page-hero p { display: none; }
  .section { padding: 54px 0; }
  .section-heading.small, .intro-statement { font-size: clamp(29px, 9vw, 42px); }
  .feed-grid, .fact-grid, .card-grid, .board-grid, .social-grid { grid-template-columns: 1fr; }
  .gallery-grid { columns: 1; }
  .writing-card { grid-template-columns: 1fr; }
  .writing-card img { height: auto; aspect-ratio: 16 / 9; }
  .timeline { padding-left: 18px; }
  .timeline-item { grid-template-columns: 1fr; }
  .contact-grid { padding: 24px 18px; }
}