/* ================= TOKENS ================= */
:root {
  --bg: #FFFFFF;
  --bg-alt: #E9F6F8;
  --bg-warm: #FBF1E6;
  --surface: #EEF9FA;
  --surface-line: #D4F1F3;
  --text: #101828;
  --text-muted: #5B6478;
  --accent-cyan: #293681; 
  --accent-teal-bright:#4274D9;
  --accent-coral: #95CCDD;
  --accent-cream: #EEF9FA;
  --on-accent: #041F30;
  --accent-cream-wash: #EEF9FA59;

  --font-display: 'Fraunces', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Inter', ui-monospace, monospace;

  --max-width: 1120px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --radius: 10px;

  --ease: cubic-bezier(.22, .8, .3, 1);
}

/* ================= RESET ================= */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
ul, ol { list-style: none; margin: 0; padding: 0; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 600; margin: 0; }
p { margin: 0 0 1em; }

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: 1rem; top: -3rem;
  background: var(--accent-cyan); color: var(--bg);
  padding: .6rem 1rem; border-radius: 6px; z-index: 1000;
  transition: top .2s var(--ease);
  font-family: var(--font-body); font-weight: 600; text-decoration: none;
}
.skip-link:focus { top: 1rem; }

:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 3px;
}

/* ================= REDUCED MOTION ================= */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ================= HEADER / NAV ================= */
.site-header {
  position: sticky; top: 0; z-index: 500;
  background: var(--accent-coral);
  border-bottom: 1px solid rgba(16,24,40,.08);
}
.header-inner {
  max-width: var(--max-width); margin: 0 auto;
  padding: 0.9rem var(--gutter);
  display: flex; align-items: center; justify-content: space-between;
}
.brand {
  display: flex; align-items: baseline; gap: .35rem;
  text-decoration: none; font-family: var(--font-display);
  margin-left: -5.32rem;
}
.brand-mark { font-size: 1.25rem; font-weight: 700; letter-spacing: .02em; color: var(--text); }
.brand-year { font-family: var(--font-mono); font-size: .85rem; color: var(--accent-cyan); }

.main-nav { position: relative; margin-left: 3rem; }
.nav-list {
  display: flex; gap: 1.75rem;
  font-size: .92rem; font-weight: 500;
}
.nav-list a {
  text-decoration: none; color: var(--text);
  transition: color .18s var(--ease);
  padding: .25rem 0;
  border-bottom: 1px solid transparent;
}
.nav-list a:hover, .nav-list a:focus-visible { color: var(--accent-cyan); }
.nav-list a.nav-btn {
  background: var(--accent-coral); color: var(--on-accent);
  padding: .4rem .9rem; border-radius: var(--radius, 6px);
  border-bottom: none; font-weight: 600;
  transition: transform .18s var(--ease), background .18s var(--ease);
}
.nav-list a.nav-btn:hover, .nav-list a.nav-btn:focus-visible {
  color: var(--on-accent); background: #4AC6AD; transform: translateY(-2px);
}

.nav-toggle {
  display: none;
  flex-direction: column; gap: 4px;
  background: none; border: none; cursor: pointer;
  padding: .5rem;
}
.nav-toggle-bar {
  width: 22px; height: 2px; background: var(--text);
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}

@media (max-width: 760px) {
  .nav-toggle { display: flex; }
  .nav-list {
    position: absolute; top: calc(100% + .9rem); right: 0;
    flex-direction: column; gap: 0;
    background: var(--accent-coral); border: 1px solid rgba(16,24,40,.1);
    border-radius: var(--radius);
    min-width: 200px; overflow: hidden;
    transform: translateY(-8px); opacity: 0; pointer-events: none;
    transition: transform .2s var(--ease), opacity .2s var(--ease);
  }
  .nav-list.is-open {
    transform: translateY(0); opacity: 1; pointer-events: auto;
  }
  .nav-list li { border-bottom: 1px solid rgba(16,24,40,.1); }
  .nav-list li:last-child { border-bottom: none; }
  .nav-list a { display: block; padding: .8rem 1.1rem; }
  .brand { margin-left: -1.5rem; }
}

/* ================= HERO ================= */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex; align-items: flex-start; justify-content: center;
  overflow: hidden;
  padding: 5rem var(--gutter) 4rem;
  text-align: center;
}
.hero-media {
  position: absolute; inset: 0;
  z-index: 0;
  overflow: hidden;
}
.hero-slideshow {
  position: absolute; inset: 0;
}
.hero-image {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0;
  filter: blur(3px);
  transform: scale(1.04);
  transition: opacity 1.25s var(--ease);
}
.hero-image.is-active { opacity: 1; }
@media (prefers-reduced-motion: reduce) {
  .hero-image { transition: none; }
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(
    180deg,
    rgba(16,24,40,0.15) 0%,
    rgba(16,24,40,0.05) 40%,
    rgba(16,24,40,0.35) 100%
  );
}

.hero-content { position: relative; z-index: 1; max-width: 760px; flex: 1 1 auto; }
.eyebrow {
  font-family: var(--font-mono); font-size: .95rem; font-weight: 700; letter-spacing: .08em;
  text-transform: uppercase; color: var(--accent-cyan);
  margin: 0 0 1.1rem;
}
.hero-title {
  font-size: clamp(2.1rem, 6vw, 3.6rem);
  line-height: 1.08;
  margin-bottom: 1rem;
}
.hero-title-accent { color: #fff; font-style: italic; }
.hero-date {
  font-size: 1.2rem; font-weight: 700; letter-spacing: .02em;
  margin-bottom: .6rem;
}
.hero-theme, .hero-venue {
  color: var(--text-muted); font-size: 1.15rem; font-weight: 600; margin-bottom: .35rem;
}
.hero-actions {
  display: flex; gap: 1rem; justify-content: center;
  margin-top: 2.2rem; flex-wrap: wrap;
}

/* Hero text sits over a photo now (overlay lightened), so override to light/white for contrast */
.hero-content .hero-date { color: #fff; text-shadow: 0 1px 6px rgba(0,0,0,.35); }
.hero-content .hero-title { color: #fff; text-shadow: 0 2px 12px rgba(0,0,0,.35); }
.hero-content .hero-title-accent { color: #fff; }
.hero-content .hero-theme,
.hero-content .hero-venue { color: rgba(255,255,255,.88); text-shadow: 0 1px 8px rgba(0,0,0,.3); }
.hero-actions .btn-ghost {
  border-color: rgba(255,255,255,.55); color: #fff;
}
.hero-actions .btn-ghost:hover, .hero-actions .btn-ghost:focus-visible {
  border-color: var(--accent-teal-bright); color: var(--accent-teal-bright);
}

/* ---- Hero brand columns (NISER/DAE right, 9th ICTR/ISTR left) ---- */
.hero-inner {
  position: relative; z-index: 1;
  display: flex; align-items: center; justify-content: center;
  gap: clamp(1.5rem, 5vw, 4.5rem);
  width: 100%;
}
.hero-brand-col {
  display: flex; flex-direction: column; gap: 1.1rem;
  flex: 0 0 auto;
}
.hero-brand-logo {
  width: clamp(88px, 8vw, 128px);
  height: clamp(88px, 8vw, 128px);
  object-fit: contain;
  padding: .7rem;
  background: rgba(255,255,255,.95);
  border-radius: 50%;
  box-shadow: 0 4px 16px rgba(16,24,40,.18);
}
@media (max-width: 900px) {
  .hero-brand-col { display: none; }
}

.btn {
  display: inline-block;
  font-family: var(--font-body); font-weight: 600; font-size: .95rem;
  padding: .85rem 1.6rem; border-radius: 999px;
  text-decoration: none; cursor: pointer;
  transition: transform .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease);
  border: 1px solid transparent;
}
.btn-primary { background: var(--accent-coral); color: var(--on-accent); }
.btn-primary:hover, .btn-primary:focus-visible { transform: translateY(-2px); background: #4AC6AD; }
.btn-ghost { border-color: var(--surface-line); color: var(--text); }
.btn-ghost:hover, .btn-ghost:focus-visible { border-color: var(--accent-teal-bright); color: var(--accent-cyan); transform: translateY(-2px); }

.hero-countdown {
  display: flex; gap: .9rem; justify-content: center;
  margin-top: 2rem;
}
.countdown-unit {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  min-width: 68px; padding: .6rem .4rem;
  background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.35);
  border-radius: var(--radius); backdrop-filter: blur(3px);
}
.countdown-value {
  font-family: var(--font-mono); font-size: 1.6rem; font-weight: 700; color: #fff;
  text-shadow: 0 1px 6px rgba(0,0,0,.35); line-height: 1;
}
.countdown-label {
  font-size: .68rem; text-transform: uppercase; letter-spacing: .08em;
  color: rgba(255,255,255,.85); margin-top: .35rem;
}
@media (max-width: 480px) {
  .hero-countdown { gap: .5rem; }
  .countdown-unit { min-width: 54px; padding: .5rem .3rem; }
  .countdown-value { font-size: 1.2rem; }
}

/* ================= SECTIONS ================= */
.section { position: relative; padding: 3.5rem 0; background: var(--bg-warm); }
.section-alt { background: var(--bg-alt); }
.section-inner { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--gutter); }
.section-title {
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  margin-bottom: 2.2rem;
  max-width: 30ch;
}

.section-motif {
  position: absolute;
  top: 0; bottom: 0;
  width: 460px; max-width: 40vw;
  z-index: -1;
}
.section-motif-right { right: -60px; }
.section-motif-left { left: -60px; }
.section-motif svg { width: 100%; height: 100%; }

@media (max-width: 1199px) {
  .section-motif { display: none; }
}

.subhead {
  font-family: var(--font-display); font-size: 1.2rem; font-weight: 600;
  margin: 2.2rem 0 1rem;
}

/* scroll reveal */
.reveal {
  opacity: 0; transform: translateY(18px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}
.reveal.in-view { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* divider — bond/strand motif */
.divider { max-width: 240px; margin: 2.5rem auto; opacity: .5; }
.divider svg { width: 100%; height: 20px; }
.divider path { fill: none; stroke: var(--accent-cyan); stroke-width: 1.5; }

/* ================= ABOUT ================= */
.about-grid {
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 2.5rem;
  align-items: start;
}
.about-copy p { color: var(--text-muted); font-size: 1.02rem; }
.stat-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem;
  margin: 0;
}
.stat {
  background: rgba(255, 255, 255, 0.001); border: 1px solid var(--surface-line);
  border-radius: var(--radius); padding: 1.1rem 1.2rem; background: var(--accent-cream-wash);
  backdrop-filter: blur(2px);
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}
.stat:hover { transform: translateY(-4px); border-color: var(--accent-teal-bright); }
.stat dt {
  font-family: var(--font-mono); font-size: .72rem; text-transform: uppercase;
  letter-spacing: .06em; color: var(--text-muted); margin-bottom: .4rem;
}
.stat dd { margin: 0; font-family: var(--font-display); font-size: 1.4rem; font-weight: 600; color: var(--accent-cyan); }

.pill-list { display: flex; flex-wrap: wrap; gap: .7rem; }
.pill-list li {
  border: 1px solid var(--surface-line); border-radius: 999px;
  padding: .5rem 1rem; font-size: .88rem; color: var(--text-muted);
  transition: border-color .18s var(--ease), color .18s var(--ease), transform .18s var(--ease);
}
.pill-list li:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); transform: translateY(-2px); }

/* ================= THEMATIC / IMPACT ================= */
.thematic-impact-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem;
  align-items: start;
}
.impact-list { display: flex; flex-direction: column; gap: .8rem; margin: 0; }
.impact-list li {
  position: relative; padding-left: 1.2rem;
  color: var(--text-muted); font-size: .92rem; line-height: 1.4;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.impact-list li::before {
  content: ''; position: absolute; left: 0; top: .5em;
  width: 6px; height: 6px; border-radius: 999px;
  background: var(--accent-cyan);
}

@media (max-width: 760px) {
  .thematic-impact-grid { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 760px) {
  .about-grid { grid-template-columns: 1fr; }
}

/* ================= ABSTRACTS ================= */
.abstracts-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem;
  margin-bottom: 2rem;
}
.abstract-card {
  background: var(--surface); border: 1px solid var(--surface-line);
  border-radius: var(--radius); padding: 1.2rem;
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}
.abstract-card:hover { transform: translateY(-4px); border-color: var(--accent-teal-bright); }
.btn-small { font-size: .8rem; padding: .5rem 1rem; }
.guidelines-btns {
  display: flex; flex-wrap: wrap; gap: .7rem;
  margin-top: 1rem;
}
.awards-note {
  margin-top: 1.4rem; margin-bottom: 2.5rem;
  color: var(--text-muted); font-size: .92rem;
}
.mono-label {
  font-family: var(--font-mono); font-size: .72rem; text-transform: uppercase;
  letter-spacing: .06em; color: var(--accent-cyan); margin: 0 0 .5rem;
}
.abstract-value { font-weight: 600; margin: 0; }

@media (max-width: 900px) {
  .abstracts-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .abstracts-grid { grid-template-columns: 1fr; }
}

/* ================= PROGRAM / TABS ================= */
.tabs { display: flex; gap: .6rem; margin-bottom: 1.6rem; flex-wrap: wrap; }
.tab {
  font-family: var(--font-mono); font-size: .85rem;
  background: none; border: 1px solid var(--surface-line); color: var(--text-muted);
  padding: .6rem 1.3rem; border-radius: 999px; cursor: pointer;
  transition: all .18s var(--ease);
}
.tab[aria-selected="true"] { background: var(--accent-coral); color: var(--on-accent); border-color: var(--accent-coral); }
.tab:hover:not([aria-selected="true"]) { border-color: var(--accent-teal-bright); color: var(--accent-cyan); }

.agenda { border-top: 1px solid var(--surface-line); }
.agenda-item {
  display: grid; grid-template-columns: 160px 1fr; gap: 1.5rem;
  padding: 1.1rem 1rem; border-bottom: 1px solid var(--surface-line);
}
.agenda-item:nth-child(even) { background: rgba(16,24,40,.04); }
.agenda-time { font-family: var(--font-mono); font-size: .85rem; color: var(--accent-cyan); }
.agenda-desc { color: var(--text-muted); }

@media (max-width: 600px) {
  .agenda-item { grid-template-columns: 1fr; gap: .3rem; }
}

/* ================= CARDS: SPEAKERS ================= */
.card-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem;
}
.person-card { text-align: left; }
.person-link {
  display: block; color: inherit; text-decoration: none;
}
.person-link:hover .person-name { color: var(--accent-cyan); }
.person-photo {
  aspect-ratio: 1; border-radius: var(--radius);
  width: 100%; object-fit: cover;
  background: linear-gradient(135deg, var(--surface), var(--surface-line));
  margin-bottom: .9rem;
  transition: transform .25s var(--ease);
}
.person-card:hover .person-photo { transform: translateY(-4px); }
.person-name { font-size: 1.02rem; margin-bottom: .2rem; }
.person-affil { color: var(--text-muted); font-size: .85rem; margin: 0; }

@media (max-width: 900px) { .card-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 540px) { .card-grid { grid-template-columns: 1fr; } }

/* ================= COMMITTEE ================= */
.name-list { border-top: 1px solid var(--surface-line); margin-bottom: 1rem; }
.name-list li {
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  padding: .8rem .6rem; border-bottom: 1px solid var(--surface-line);
  border-radius: 6px;
  transition: background .18s var(--ease);
}
.name-list li:nth-child(even) { background: rgba(16,24,40,.04); }
.name-list li:hover { background: var(--surface); }
.name-list li:hover .name { color: var(--accent-cyan); }
.name-list .name { font-weight: 600; text-decoration: none; }
.name-list .name:hover, .name-list .name:focus-visible { text-decoration: underline; }
.name-list .role { color: var(--text-muted); font-size: .88rem; }

/* ================= VENUE ================= */
.venue-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 2.5rem; align-items: start; }
.venue-copy p { color: var(--text-muted); }
.venue-map-wrapper {
  width: 100%;
  min-height: 350px;
  height: 100%;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.venue-map-wrapper iframe {
  width: 100%;
  height: 100%;
  min-height: 350px;
  display: block;
  border: 0;
}

@media (max-width: 760px) { .venue-grid { grid-template-columns: 1fr; } }

/* ================= PRICING / TIERS ================= */
.pricing-grid, .tier-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem;
  margin-bottom: 2rem;
}
.price-card, .tier-card {
  background: var(--surface); border: 1px solid var(--surface-line);
  border-radius: var(--radius); padding: 1.6rem;
}
.price-card h3, .tier-card h3 { font-size: 1.05rem; margin-bottom: .8rem; }
.price { font-family: var(--font-mono); font-size: 1.3rem; color: var(--accent-cyan); margin: .2rem 0 0; }
.price-note { color: var(--text-muted); font-size: .8rem; margin: 0 0 .9rem; }
.tier-card ul { margin-top: .9rem; }
.tier-card li {
  font-size: .85rem; color: var(--text-muted); padding: .3rem 0;
  border-top: 1px solid var(--surface-line);
}

.tier-grid { grid-template-columns: repeat(4, 1fr); }

.tier-grid .tier-card {
  display: block; text-decoration: none; color: inherit;
  transition: transform .2s var(--ease), border-color .2s var(--ease);
}
.tier-grid .tier-card:hover, .tier-grid .tier-card:focus-visible {
  transform: translateY(-4px); border-color: var(--accent-teal-bright);
}
.reg-tier-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem;
  margin-bottom: 2rem;
}
@media (max-width: 760px) {
  .reg-tier-grid { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .pricing-grid { grid-template-columns: 1fr; }
  .tier-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) { .tier-grid { grid-template-columns: 1fr; } }

.awards-grid { grid-template-columns: repeat(2, 1fr); gap: 1.6rem; }
.awards-grid .tier-card { padding: 1.1rem 1.8rem; }
.awards-grid .tier-card ul { margin-top: .4rem; }
.awards-grid .tier-card li { padding: .2rem 0; }
@media (max-width: 760px) { .awards-grid { grid-template-columns: 1fr; } }

.sponsor-wall { display: flex; gap: 1.2rem; flex-wrap: wrap; }
.sponsor-slot {
  width: 140px; height: 70px; border: 1px dashed var(--surface-line);
  border-radius: var(--radius); display: flex; align-items: center; justify-content: center;
  padding: .6rem; transition: border-color .18s var(--ease);
}
.sponsor-slot:hover, .sponsor-slot:focus-visible { border-color: var(--accent-teal-bright); }
.sponsor-slot img {
  max-width: 100%; max-height: 100%; object-fit: contain;
}

/* ================= DOWNLOADS ================= */
.download-list { border-top: 1px solid var(--surface-line); }
.download-list li { border-bottom: 1px solid var(--surface-line); }
.download-list a {
  display: flex; justify-content: space-between; align-items: center;
  padding: 1rem 0; text-decoration: none; color: var(--text);
  transition: color .18s var(--ease);
}
.download-list a:hover, .download-list a:focus-visible { color: var(--accent-cyan); }

/* ================= LEGACY / GALLERY ================= */
.gallery-scroller {
  position: relative;
  margin: 0 calc(var(--gutter) * -1);
  padding: 0 var(--gutter);
}
.gallery-track {
  display: flex;
  gap: 1.2rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding-bottom: .5rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--surface-line) transparent;
}
.gallery-track::-webkit-scrollbar { height: 8px; }
.gallery-track::-webkit-scrollbar-track { background: transparent; }
.gallery-track::-webkit-scrollbar-thumb { background: var(--surface-line); border-radius: 8px; }
.gallery-item {
  margin: 0;
  flex: 0 0 clamp(230px, 30vw, 320px);
  scroll-snap-align: start;
}
.gallery-thumb {
  display: block; width: 100%; padding: 0; border: none; background: none;
  cursor: zoom-in; border-radius: var(--radius);
}
.gallery-thumb img {
  width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: var(--radius);
  background: linear-gradient(135deg, var(--surface), var(--surface-line));
  display: block;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.gallery-thumb:hover img, .gallery-thumb:focus-visible img {
  transform: scale(1.03);
  box-shadow: 0 10px 28px rgba(16, 24, 40, .16);
}

.gallery-scroll-hint { display: flex; justify-content: flex-end; gap: .6rem; margin-top: .8rem; }
.gallery-nav {
  width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--surface-line);
  background: var(--bg); color: var(--text); font-size: 1.1rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}
.gallery-nav:hover, .gallery-nav:focus-visible { background: var(--accent-teal-bright); border-color: var(--accent-teal-bright); color: var(--on-accent); }
@media (max-width: 640px) { .gallery-scroll-hint { display: none; } }

/* ---- Lightbox ---- */
.lightbox {
  position: fixed; inset: 0; z-index: 999;
  display: none; align-items: center; justify-content: center;
  background: rgba(16, 24, 40, .88);
  padding: clamp(1rem, 5vw, 3rem);
}
.lightbox.is-open { display: flex; }
.lightbox-img {
  max-width: min(90vw, 1100px); max-height: 82vh; width: auto; height: auto;
  border-radius: var(--radius);
  box-shadow: 0 20px 60px rgba(0, 0, 0, .4);
  opacity: 0; transform: scale(.92);
  transition: opacity .25s var(--ease), transform .25s var(--ease);
}
.lightbox.is-open .lightbox-img { opacity: 1; transform: scale(1); }
.lightbox-close {
  position: absolute; top: clamp(.75rem, 3vw, 1.5rem); right: clamp(.75rem, 3vw, 1.5rem);
  width: 44px; height: 44px; border-radius: 50%; border: none;
  background: rgba(255, 255, 255, .12); color: #fff; font-size: 1.6rem; line-height: 1;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: background .18s var(--ease);
}
.lightbox-close:hover, .lightbox-close:focus-visible { background: rgba(255, 255, 255, .24); }
.lightbox-arrow {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 48px; height: 48px; border-radius: 50%; border: none;
  background: rgba(255, 255, 255, .12); color: #fff; font-size: 1.3rem;
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: background .18s var(--ease);
}
.lightbox-arrow:hover, .lightbox-arrow:focus-visible { background: rgba(255, 255, 255, .24); }
.lightbox-prev { left: clamp(.5rem, 3vw, 2rem); }
.lightbox-next { right: clamp(.5rem, 3vw, 2rem); }
@media (max-width: 560px) {
  .lightbox-arrow { width: 40px; height: 40px; }
}

/* ================= FAQ ================= */
.accordion-item {
  border-bottom: 1px solid var(--surface-line); padding: 1.1rem 0;
}
.accordion-item summary {
  cursor: pointer; font-weight: 600; list-style: none;
  display: flex; justify-content: space-between; align-items: center;
}
.accordion-item summary::-webkit-details-marker { display: none; }
.accordion-item summary::after {
  content: '+'; color: var(--accent-cyan); font-size: 1.3rem; font-family: var(--font-mono);
}
.accordion-item[open] summary::after { content: '–'; }
.accordion-item p { color: var(--text-muted); margin-top: .8rem; }

/* ================= CONTACT ================= */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem; margin-bottom: 1.5rem; }
.contact-card {
  background: var(--surface); border: 1px solid var(--surface-line);
  border-radius: var(--radius); padding: 1.3rem;
}
.contact-card h3 { font-size: 1rem; margin-bottom: .4rem; }
.contact-card p { color: var(--text-muted); font-size: .9rem; margin: .1rem 0; }
.contact-card a { text-decoration: none; }
.contact-card a:hover, .contact-card a:focus-visible { color: var(--accent-cyan); }
.venue-line { color: var(--text-muted); font-size: .9rem; }

@media (max-width: 760px) { .contact-grid { grid-template-columns: 1fr; } }

.social-link { display: inline-flex; align-items: center; gap: .45rem; }
.social-icon { width: 1.1em; height: 1.1em; fill: currentColor; flex-shrink: 0; }
img.social-icon { object-fit: contain; }

/* ================= FOOTER ================= */
.site-footer { border-top: 1px solid var(--surface-line); padding: 2rem 0; }
.footer-inner {
  max-width: var(--max-width); margin: 0 auto; padding: 0 var(--gutter);
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem;
  color: var(--text-muted); font-size: .85rem;
}
.back-to-top { text-decoration: none; color: var(--accent-cyan); font-family: var(--font-mono); font-size: .82rem; }