@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&display=swap');
@import url('https://api.fontshare.com/v2/css?f[]=clash-grotesk@200,300,400,500,600,700&display=swap');

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

:root {
  --bg: #0b0d18;
  --bg-card: #12142400;
  --card-fill: rgba(255, 255, 255, 0.02);
  --border: rgba(255, 255, 255, 0.14);
  --border-soft: rgba(255, 255, 255, 0.08);
  --text: #f4f5f8;
  --text-dim: #a6a9bc;
  --text-faint: #6d7086;
  --pill: rgba(255, 255, 255, 0.08);
  --pill-border: rgba(255, 255, 255, 0.18);
  --placeholder: #d9d9dc;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-full: 999px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Clash Grotesk Variable", "Clash Grotesk", -apple-system, "Segoe UI", sans-serif;
  font-weight: 300;
  line-height: 1.5;
}

img { max-width: 100%; display: block; }

a { color: inherit; }

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 40px;
}

/* ---------- NAV ---------- */

.sitenav {
  position: relative;
  z-index: 50;
  width: 100%;
}

.sitenav.overlay {
  position: absolute;
  top: 0;
  left: 0;
}

.sitenav.solid {
  background: var(--bg);
  border-bottom: 1px solid var(--border-soft);
}

.sitenav .bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 32px;
  max-width: 1400px;
  margin: 0 auto;
}

.sitenav .logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text);
  position: relative;
  top: 2px;
}

.sitenav .logo img { height: 30px; width: auto; display: block; }

.sitenav .logo .logo-text { position: relative; top: 2.3px; }

.sitenav .links {
  display: flex;
  gap: 2px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--pill-border);
  border-radius: var(--radius-full);
  padding: 5px;
  backdrop-filter: blur(6px);
}

.sitenav .links a {
  color: #e7e8ee;
  text-decoration: none;
  padding: 7px 15px;
  border-radius: var(--radius-full);
  font-size: 12.5px;
  font-weight: 400;
  transition: background 0.2s ease, color 0.2s ease;
  white-space: nowrap;
}

.sitenav .links a:hover { background: rgba(255, 255, 255, 0.12); }
.sitenav .links a.active { background: rgba(255, 255, 255, 0.16); font-weight: 500; }

.sitenav .allocation {
  text-decoration: none;
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--pill-border);
  border-radius: var(--radius-full);
  padding: 9px 17px;
  font-size: 12.5px;
  white-space: nowrap;
  transition: background 0.2s ease;
}

.sitenav .allocation:hover { background: rgba(255, 255, 255, 0.16); }

.nav-toggle { display: none; }

/* ---------- HERO ---------- */

.hero {
  position: relative;
  overflow: hidden;
  background: #47548f;
}

.hero-bg {
  display: block;
  width: 100%;
  height: auto;
}

.hero-text {
  position: absolute;
  left: 50%;
  top: 34.5%;
  transform: translateX(-50%);
  z-index: 3;
  text-align: center;
}

.hero-text h1 {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600;
  font-size: clamp(22px, 5.5vw, 73px);
  line-height: 1.13;
  color: #fff;
  text-shadow: 0 4px 30px rgba(0, 0, 0, 0.18);
  white-space: nowrap;
  text-align: center;
}

.hero-slogan {
  margin-top: 1.6vw;
  text-align: center;
  color: rgba(255, 255, 255, 0.85);
  font-size: clamp(15px, 1.15vw, 16px);
  letter-spacing: 0.3px;
}

@media (max-width: 700px) {
  .hero-text h1 { white-space: normal; font-size: 33px; }
  .hero { min-height: 100vh; min-height: 100svh; }
  .hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
  .hero-slogan { font-size: 18px; white-space: nowrap; }

  /* main screen content: all text 1.5x */
  .content .about-block h3 { font-size: 22.5px; }
  .content .about-block p { font-size: 20.25px; }
  .content .section-heading { font-size: 22.5px; }
  .content .gallery-hint { font-size: 18px; }
  .content .gallery-caption { font-size: 18.75px; }
  .content .conference-heading { font-size: 33px; }
  .content .day-tab { font-size: 19.5px; }
  .content .day-date { font-size: 21px; }
  .content .schedule-time { font-size: 19.5px; }
  .content .schedule-event { font-size: 21px; }
  .content .schedule-note { font-size: 17.25px; }
  .content .venue-info .name { font-size: 21px; }
  .content .venue-info .name-kr { font-size: 18px; }
  .content .venue-info .addr { font-size: 18.75px; }

  /* letter pages: all text 1.5x */
  .people-page .page-heading { font-size: 60px; }
  .people-page .back-link { font-size: 19.5px; }
  .people-page .person-name { font-size: 40.5px; }
  .people-page .person-role { font-size: 21px; }
  .people-page .person-letter { font-size: 20.25px; }
}

/* ---------- MAIN NARROW CONTENT ---------- */

.content {
  max-width: 720px;
  margin: 0 auto;
  padding: 90px 24px 60px;
}

.about-block { margin-bottom: 34px; }

.about-block h3 {
  font-family: "Clash Grotesk Variable", "Clash Grotesk", sans-serif;
  font-weight: 600;
  font-size: 22.5px;
  color: var(--text);
  margin-bottom: 8px;
}

.about-block p {
  color: var(--text-dim);
  font-size: 20.25px;
  font-weight: 300;
  line-height: 1.65;
}

.section-heading {
  font-family: "Clash Grotesk Variable", "Clash Grotesk", sans-serif;
  font-weight: 500;
  font-size: 22.5px;
  color: var(--text);
  margin: 46px 0 16px;
}

.gallery-carousel-wrap {
  position: relative;
}

.gallery-carousel {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  gap: 10px;
  border-radius: 10px;
  cursor: grab;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
  user-select: none;
}

.gallery-carousel.dragging { cursor: grabbing; scroll-snap-type: none; }

.gallery-carousel::-webkit-scrollbar { display: none; }

.gallery-slide {
  flex: 0 0 100%;
  scroll-snap-align: center;
  aspect-ratio: 16 / 9;
  border-radius: 10px;
  overflow: hidden;
  background: var(--placeholder);
}

.gallery-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  pointer-events: none;
}

.gallery-progress {
  height: 4px;
  margin-top: 16px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
}

.gallery-progress-fill {
  height: 100%;
  width: 0%;
  border-radius: 2px;
  background: #fff;
}

.gallery-hint {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius-full);
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(6px);
  color: #fff;
  font-family: "Clash Grotesk Variable", "Clash Grotesk", sans-serif;
  font-size: 18px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  pointer-events: none;
  opacity: 1;
  transition: opacity 0.4s ease;
  animation: gallery-hint-nudge 1.6s ease-in-out infinite;
}

.gallery-hint.hidden { opacity: 0; }

.gallery-hint svg { width: 14px; height: 14px; }

@keyframes gallery-hint-nudge {
  0%, 100% { transform: translate(-50%, -50%); }
  50% { transform: translate(calc(-50% - 6px), -50%); }
}

.gallery-caption {
  margin-top: 14px;
  text-align: center;
  font-family: "Clash Grotesk Variable", "Clash Grotesk", sans-serif;
  font-size: 18.75px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-faint);
}

@media (min-width: 640px) {
  .gallery-slide { flex-basis: 82%; }
}

.divider {
  border: none;
  border-top: 1px solid var(--border-soft);
  margin: 56px 0 0;
}

.page-heading {
  font-family: "Clash Grotesk Variable", "Clash Grotesk", sans-serif;
  font-weight: 400;
  font-size: 40px;
  color: var(--text);
  margin: 40px 0 6px;
}

.people-page .page-heading { font-size: 60px; }

/* ---------- CONFERENCE INFO ---------- */

.conference-heading {
  font-family: "Clash Grotesk Variable", "Clash Grotesk", sans-serif;
  font-weight: 400;
  font-size: 33px;
  color: var(--text);
  margin: 56px 0 6px;
}

.day-panels {
  position: relative;
}

.day-tabs {
  display: flex;
  background: transparent;
  border: 1px solid var(--pill-border);
  border-radius: var(--radius-full);
  padding: 5px;
  margin-bottom: 22px;
}

.day-tab {
  position: relative;
  flex: 1;
  text-align: center;
  padding: 12px 0;
  border-radius: var(--radius-full);
  font-family: "Clash Grotesk Variable", "Clash Grotesk", sans-serif;
  font-size: 19.5px;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--text-dim);
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.day-tab:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -1px;
  top: 20%;
  bottom: 20%;
  width: 1px;
  background: var(--border-soft);
}

.day-tab.active::after,
.day-tab.active + .day-tab::after { display: none; }

.day-tab.active {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.4);
  color: var(--text);
}

.day-panel { display: none; }
.day-panel.active { display: block; }

.day-date {
  font-family: "Clash Grotesk Variable", "Clash Grotesk", sans-serif;
  font-size: 21px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 14px;
}

.schedule-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 18px;
  padding: 20px 0;
}

.schedule-row:not(:first-child) { border-top: 1px solid var(--border-soft); }

.schedule-time {
  font-size: 19.5px;
  color: var(--text);
  font-weight: 400;
}

.schedule-event { font-size: 21px; color: var(--text); font-weight: 400; }

.schedule-note {
  margin-top: 16px;
  font-size: 17.25px;
  color: var(--text-faint);
  line-height: 1.7;
}

/* ---------- VENUE ---------- */

.venue-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 0;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 4px;
}

.map-embed {
  position: relative;
  min-height: 220px;
  background: var(--placeholder);
}

.map-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.venue-info {
  padding: 22px 26px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
}

.venue-info .name { font-size: 21px; font-weight: 600; color: var(--text); }
.venue-info .name-kr { font-size: 18px; color: var(--text-faint); margin-top: 2px; }
.venue-info hr { border: none; border-top: 1px solid var(--border-soft); }
.venue-info .addr { font-size: 18.75px; color: var(--text-dim); line-height: 1.6; }

/* ---------- CARD GRID PAGES (committee / staff) ---------- */

.grid-page { max-width: 1160px; margin: 0 auto; padding: 70px 40px 100px; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 36px;
}

.card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }

.info-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px 24px;
  display: flex;
  flex-direction: column;
  min-height: 190px;
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0));
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.info-card:hover { border-color: rgba(255,255,255,0.35); transform: translateY(-2px); }

.info-card h4 {
  font-family: "Clash Grotesk Variable", "Clash Grotesk", sans-serif;
  font-weight: 500;
  font-size: 24px;
  margin-bottom: 8px;
}

.info-card p {
  font-size: 13px;
  color: var(--text-dim);
  font-weight: 300;
  flex-grow: 1;
}

.more-btn {
  margin-top: 18px;
  align-self: stretch;
  text-align: center;
  text-decoration: none;
  color: var(--text);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 11px 0;
  font-size: 13px;
  transition: background 0.2s ease;
}

.more-btn:hover { background: rgba(255,255,255,0.12); }

/* ---------- DIRECTOR / SECRETARIAT PAGES ---------- */

.people-page { max-width: 900px; margin: 0 auto; padding: 70px 40px 100px; }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 19.5px;
  padding: 8px 4px;
  margin-bottom: 6px;
  transition: color 0.2s ease, gap 0.2s ease;
}

.back-link:hover { color: var(--text); gap: 9px; }
.back-link svg { width: 14px; height: 14px; }

.person-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-top: 28px;
}

.person-head {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-bottom: 24px;
}

.person-photo {
  width: 130px;
  height: 173px;
  aspect-ratio: 3 / 4;
  background: var(--placeholder);
  border-radius: 8px;
  flex-shrink: 0;
  object-fit: cover;
  display: block;
}

.person-name {
  font-family: "Clash Grotesk Variable", "Clash Grotesk", sans-serif;
  font-weight: 500;
  font-size: 40.5px;
}

.person-role { color: var(--text-dim); font-size: 21px; margin-top: 4px; }

.person-letter { font-size: 20.25px; color: var(--text-dim); line-height: 1.75; font-weight: 300; }
.person-letter p { margin-bottom: 14px; }
.person-letter p:last-child { margin-bottom: 0; }
.person-letter .quote { font-style: italic; color: var(--text); }

.staff-letters .person-letter,
.staff-letters .person-letter .quote { color: var(--text); }

/* ---------- FOOTER ---------- */

.sitefooter {
  border-top: 1px solid var(--border-soft);
  margin-top: 40px;
}

.sitefooter .inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 32px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.sitefooter .brand {
  display: flex;
  align-items: center;
  gap: 18px;
}

.sitefooter .brand img { height: 32px; width: auto; display: block; }

.sitefooter .brand-text .rights {
  font-size: 11.5px;
  color: var(--text-faint);
}

.sitefooter .insta {
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 0;
}

.sitefooter .insta img {
  width: 38px;
  height: 38px;
  display: block;
  transition: transform 0.2s ease;
}

.sitefooter .insta:hover img { transform: scale(1.08); }

/* ---------- RESPONSIVE ---------- */

@media (max-width: 860px) {
  .sitenav .links { display: none; }
  .sitenav .bar {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    grid-auto-flow: dense;
    align-items: center;
    padding: 18px 20px;
    gap: 10px;
  }
  .sitenav.overlay .logo { display: none; }
  .sitenav.solid .logo {
    grid-column: 2;
    justify-self: center;
    position: relative;
  }
  .sitenav.solid .logo .logo-icon {
    position: absolute;
    right: 100%;
    top: 50%;
    transform: translateY(-50%);
    margin-right: 8px;
  }
  .sitenav .logo img { height: 30px; }
  .nav-toggle {
    grid-column: 1;
    justify-self: start;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    font-size: 22px;
    border: 1px solid var(--pill-border);
    border-radius: 13px;
    background: rgba(255,255,255,0.06);
    cursor: pointer;
    flex-shrink: 0;
  }
  .sitenav .allocation {
    grid-column: 3;
    justify-self: end;
    flex-shrink: 0;
    padding: 12px 19px;
    font-size: 18px;
  }
  .sitenav .allocation span { display: none; }
  .sitenav.mobile-open .links {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 74px;
    right: 20px;
    left: 20px;
    border-radius: 16px;
    padding: 14px;
    background: #12142a;
    border: 1px solid var(--border-soft);
    box-shadow: 0 12px 32px rgba(0,0,0,0.4);
    z-index: 60;
  }
  .sitenav.mobile-open .links a { padding: 12px 16px; font-size: 18.75px; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid.cols-3 { grid-template-columns: repeat(2, 1fr); }
  .venue-grid { grid-template-columns: 1fr; }
  .map-box { min-height: 130px; }
  .sitefooter .inner { flex-direction: column; justify-content: center; text-align: center; gap: 18px; }
  .sitefooter .brand { flex-direction: column; }
}

@media (max-width: 520px) {
  .card-grid, .card-grid.cols-3 { grid-template-columns: 1fr; }
  .person-head { flex-direction: column; align-items: flex-start; }
  .sitenav .allocation span { display: none; }
}