/* =====================================================
   AI SYMPOSIUM IN FINANCE & ACCOUNTING
   Johnson Investment Institute | Lindner College of Business
   ===================================================== */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600&display=swap');

/* ── Design Tokens ─────────────────────────────────── */
:root {
  --bg-dark:      #020818;
  --bg-mid:       #060e23;
  --bg-card:      #0a1628;
  --bg-card-hover:#0d1e38;
  --accent-red:   #e00122;
  --accent-red-dim:#9b0118;
  --accent-cyan:  #00d4ff;
  --accent-cyan-dim:#006b80;
  --accent-gold:  #c8a951;
  --accent-gold-dim:#7a6530;
  --text-primary: #e8f4fd;
  --text-muted:   #94a3b8;
  --text-dim:     #4a6080;
  --border:       rgba(0, 212, 255, 0.15);
  --border-red:   rgba(224, 1, 34, 0.3);
  --border-gold:  rgba(200, 169, 81, 0.4);
  --radius:       12px;
  --radius-lg:    20px;
  --shadow-glow-cyan: 0 0 30px rgba(0, 212, 255, 0.15);
  --shadow-glow-red:  0 0 30px rgba(224, 1, 34, 0.2);
  --shadow-glow-gold: 0 0 40px rgba(200, 169, 81, 0.2);
  --transition:   0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; scroll-padding-top: 88px; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── Typography ────────────────────────────────────── */
h1, h2, h3, h4 { font-family: 'Space Grotesk', sans-serif; font-weight: 600; line-height: 1.2; }

a { color: var(--accent-cyan); text-decoration: none; transition: color var(--transition); }
a:hover { color: #fff; }

/* ── Utilities ─────────────────────────────────────── */
.container { max-width: 1160px; margin: 0 auto; padding: 0 2rem; }

.section-label {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: 'Space Grotesk', sans-serif; font-size: 0.7rem;
  font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent-cyan);
  padding: 0.35rem 1rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  background: rgba(0, 212, 255, 0.06);
  margin-bottom: 1.25rem;
}

.section-label::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--accent-cyan);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.7); }
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.75rem);
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 600px;
}

/* ── Fade-in animations (IntersectionObserver) ─────── */
.fade-in {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* ══════════════════════════════════════════════════════
   NAVBAR
   ══════════════════════════════════════════════════════ */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 1rem 0;
  transition: background var(--transition), backdrop-filter var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
}

#navbar.scrolled {
  background: rgba(2, 8, 24, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--border);
}

.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
}

.nav-logo {
  background: #fff;
  padding: 5px 10px;
  border-radius: 7px;
  display: flex; align-items: center;
  line-height: 0;
  transition: box-shadow var(--transition);
}
.nav-logo:hover {
  box-shadow: 0 0 0 2px rgba(200,169,81,0.5);
}
.nav-logo img {
  height: 48px; width: auto;
  display: block;
}

.nav-links {
  display: flex; align-items: center; gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.85rem; font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--text-primary); }

.nav-cta {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.82rem; font-weight: 600;
  letter-spacing: 0.06em;
  color: #fff !important;
  background: var(--accent-red);
  padding: 0.5rem 1.25rem;
  border-radius: 6px;
  transition: background var(--transition), box-shadow var(--transition) !important;
}
.nav-cta:hover {
  background: #ff0028 !important;
  box-shadow: 0 0 20px rgba(224, 1, 34, 0.5) !important;
}

.nav-hamburger {
  display: none;
  flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.nav-hamburger span {
  display: block; width: 24px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ══════════════════════════════════════════════════════
   HERO
   ══════════════════════════════════════════════════════ */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}

#hero-canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  z-index: 0;
}

.hero-overlay {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 40%, rgba(2,8,24,0.3) 0%, rgba(2,8,24,0.85) 100%);
  z-index: 1;
}

.hero-content {
  position: relative; z-index: 2;
  text-align: center;
  padding: 6rem 1.5rem 4rem;
  max-width: 900px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--accent-gold);
  border: 1px solid var(--border-gold);
  background: rgba(200, 169, 81, 0.08);
  padding: 0.4rem 1.1rem;
  border-radius: 100px;
  margin-bottom: 2rem;
}
.hero-badge::before {
  content: '✦'; font-size: 0.65rem;
  animation: spin-slow 8s linear infinite;
}
@keyframes spin-slow { to { transform: rotate(360deg); } }

.hero-title {
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.05;
  margin-bottom: 0.6rem;
  background: linear-gradient(135deg, #fff 30%, var(--accent-cyan) 70%, #fff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1rem, 2.5vw, 1.4rem);
  font-weight: 400;
  color: var(--accent-gold);
  margin-bottom: 1.75rem;
  font-style: italic;
}

.hero-meta {
  display: flex; align-items: center; justify-content: center;
  flex-wrap: wrap; gap: 1.5rem;
  font-size: 0.95rem; color: var(--text-muted);
  margin-bottom: 2.5rem;
}

.hero-meta-item {
  display: flex; align-items: center; gap: 0.45rem;
}
.hero-meta-item svg { color: var(--accent-cyan); flex-shrink: 0; }

.hero-countdown {
  display: flex; justify-content: center; gap: 1.25rem;
  margin-bottom: 3rem;
}

.countdown-block {
  display: flex; flex-direction: column; align-items: center;
  background: rgba(0, 212, 255, 0.06);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1.2rem;
  min-width: 72px;
  backdrop-filter: blur(10px);
}

.countdown-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.2rem; font-weight: 700;
  color: var(--accent-cyan);
  line-height: 1;
  text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.countdown-label {
  font-size: 0.65rem; font-weight: 500;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--text-dim);
  margin-top: 0.3rem;
}

.hero-actions {
  display: flex; align-items: center; justify-content: center;
  flex-wrap: wrap; gap: 1rem;
}

.btn-primary {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.95rem; font-weight: 600;
  letter-spacing: 0.04em;
  color: #fff;
  background: var(--accent-red);
  padding: 0.85rem 2rem;
  border-radius: 8px;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
}
.btn-primary:hover {
  background: #ff0028;
  box-shadow: 0 0 32px rgba(224,1,34,0.55), 0 0 60px rgba(224,1,34,0.2);
  transform: translateY(-2px);
  color: #fff;
}

.btn-secondary {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.95rem; font-weight: 500;
  color: var(--accent-cyan);
  border: 1px solid var(--border);
  padding: 0.85rem 2rem;
  border-radius: 8px;
  background: rgba(0,212,255,0.04);
  backdrop-filter: blur(8px);
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition), transform var(--transition);
}
.btn-secondary:hover {
  border-color: var(--accent-cyan);
  background: rgba(0,212,255,0.1);
  box-shadow: var(--shadow-glow-cyan);
  transform: translateY(-2px);
  color: var(--accent-cyan);
}

.hero-scroll-hint {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%);
  z-index: 2;
  display: flex; flex-direction: column; align-items: center; gap: 0.4rem;
  color: var(--text-dim); font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase;
}
.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, var(--accent-cyan), transparent);
  animation: scroll-drop 2s ease-in-out infinite;
}
@keyframes scroll-drop {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ══════════════════════════════════════════════════════
   ABOUT
   ══════════════════════════════════════════════════════ */
#about {
  padding: 7rem 0;
  background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-mid) 100%);
  position: relative;
}
#about::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
  opacity: 0.3;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 4rem;
  align-items: center;
}

.about-text p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
  line-height: 1.75;
}

.about-text p strong {
  color: var(--text-primary);
  font-weight: 600;
}

.about-stats {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.stat-card:hover {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow-cyan);
  transform: translateY(-3px);
}

.stat-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.4rem; font-weight: 700;
  color: var(--accent-cyan);
  display: block;
  text-shadow: 0 0 20px rgba(0,212,255,0.4);
}

.stat-desc {
  font-size: 0.8rem; color: var(--text-muted);
  letter-spacing: 0.04em;
  margin-top: 0.25rem;
  display: block;
}

/* ══════════════════════════════════════════════════════
   KEYNOTE
   ══════════════════════════════════════════════════════ */
#keynote {
  padding: 5rem 0;
  background: var(--bg-mid);
  position: relative;
  overflow: hidden;
}

.keynote-glow {
  position: absolute; top: -100px; right: -200px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(200,169,81,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.keynote-card {
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  padding: 3rem;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-glow-gold);
}

.keynote-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent-gold), var(--accent-cyan), var(--accent-gold));
  animation: shimmer 3s linear infinite;
  background-size: 200% 100%;
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.keynote-photo-wrap {
  position: relative;
  flex-shrink: 0;
}

.keynote-photo-wrap::after {
  content: '';
  position: absolute; inset: -4px;
  border-radius: 50%;
  background: conic-gradient(var(--accent-gold), var(--accent-cyan), var(--accent-gold));
  z-index: -1;
  animation: spin-slow 6s linear infinite;
}

.keynote-photo {
  width: 160px; height: 160px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center top;
  border: 4px solid var(--bg-card);
  display: block;
  background: linear-gradient(135deg, var(--accent-gold-dim), var(--bg-card));
  image-rendering: -webkit-optimize-contrast;
}

.speaker-initials {
  width: 160px; height: 160px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-gold-dim) 0%, var(--bg-mid) 100%);
  border: 4px solid var(--bg-card);
  display: flex; align-items: center; justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.5rem; font-weight: 700;
  color: var(--accent-gold);
}

.keynote-tag {
  display: inline-block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.68rem; font-weight: 700;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--accent-gold);
  border: 1px solid var(--border-gold);
  background: rgba(200,169,81,0.08);
  padding: 0.3rem 0.85rem;
  border-radius: 100px;
  margin-bottom: 0.75rem;
}

.keynote-name {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.keynote-title {
  font-size: 0.95rem;
  color: var(--accent-cyan);
  margin-bottom: 0.2rem;
}

.keynote-org {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.keynote-talk {
  font-size: 1.05rem;
  font-style: italic;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  line-height: 1.45;
}

.keynote-desc {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 580px;
}

/* ══════════════════════════════════════════════════════
   SPEAKERS
   ══════════════════════════════════════════════════════ */
#speakers {
  padding: 7rem 0;
  background: var(--bg-dark);
}

.speakers-header { text-align: center; margin-bottom: 4rem; }
.speakers-header .section-subtitle { margin: 0 auto; }

.track-section { margin-bottom: 3.5rem; }

.track-heading {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.75rem;
  margin-bottom: 1.75rem;
  display: flex; align-items: center; gap: 0.75rem;
}
.track-heading span {
  display: inline-block;
  width: 28px; height: 2px;
  background: var(--accent-cyan);
  border-radius: 1px;
}

.speakers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.25rem;
}

.speaker-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  cursor: pointer;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition), background var(--transition);
  position: relative;
  overflow: hidden;
}
.speaker-card::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(0,212,255,0.03) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
}
.speaker-card:hover {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow-cyan);
  transform: translateY(-5px);
  background: var(--bg-card-hover);
}
.speaker-card:hover::after { opacity: 1; }

.speaker-card.keynote-card-small {
  border-color: var(--border-gold);
}
.speaker-card.keynote-card-small:hover {
  border-color: var(--accent-gold);
  box-shadow: var(--shadow-glow-gold);
}

.card-photo-wrap {
  width: 72px; height: 72px;
  border-radius: 50%;
  margin-bottom: 1rem;
  overflow: hidden;
  position: relative;
}
.card-photo-wrap img,
.card-initials {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center top;
  border-radius: 50%;
  image-rendering: -webkit-optimize-contrast;
}
.card-initials {
  display: flex; align-items: center; justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.4rem; font-weight: 700;
  color: var(--accent-cyan);
  background: linear-gradient(135deg, rgba(0,212,255,0.12), var(--bg-mid));
}

.card-badge {
  display: inline-block;
  font-size: 0.62rem; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  margin-bottom: 0.6rem;
}
.badge-keynote    { background: rgba(200,169,81,0.15); color: var(--accent-gold); }
.badge-academic   { background: rgba(0,212,255,0.1);   color: var(--accent-cyan); }
.badge-dist-academic { background: rgba(0,212,255,0.15); color: var(--accent-cyan); border: 1px solid rgba(0,212,255,0.3); }
.badge-practitioner { background: rgba(224,1,34,0.12); color: #ff6080; }
.badge-panel      { background: rgba(148,163,184,0.12); color: var(--text-muted); }

.card-name {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1rem; font-weight: 600;
  margin-bottom: 0.2rem;
  color: var(--text-primary);
}

.card-role {
  font-size: 0.8rem; color: var(--accent-cyan);
  margin-bottom: 0.15rem;
}

.card-org {
  font-size: 0.78rem; color: var(--text-muted);
  margin-bottom: 0.85rem;
}

.card-talk {
  font-size: 0.82rem; color: var(--text-muted);
  font-style: italic;
  line-height: 1.5;
  border-top: 1px solid var(--border);
  padding-top: 0.75rem;
}

.card-view-more {
  font-size: 0.75rem; color: var(--accent-cyan);
  display: flex; align-items: center; gap: 0.3rem;
  margin-top: 0.75rem;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity var(--transition), transform var(--transition);
}
.speaker-card:hover .card-view-more {
  opacity: 1;
  transform: translateY(0);
}

/* Panel section */
.panel-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  margin-top: 1.5rem;
}

.panel-topic {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.2rem; font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.panel-info-grid {
  display: grid; grid-template-columns: auto 1fr; gap: 0.5rem 1rem;
  align-items: start;
}
.panel-label {
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--text-dim);
  padding-top: 2px;
}
.panel-value { font-size: 0.9rem; color: var(--text-muted); }
.panel-value strong { color: var(--text-primary); font-weight: 500; }

.panel-people {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.25rem;
  margin-top: 1.25rem;
}

.panel-person {
  display: flex; align-items: center; gap: 0.85rem;
  background: rgba(0,212,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  transition: border-color var(--transition), background var(--transition);
}
.panel-person:hover {
  border-color: var(--accent-cyan);
  background: rgba(0,212,255,0.08);
}

.panel-person-photo {
  width: 52px; height: 52px;
  border-radius: 50%; overflow: hidden; flex-shrink: 0;
}
.panel-person-photo img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center top;
  border-radius: 50%;
}

.panel-person-role {
  font-size: 0.62rem; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--accent-cyan); margin-bottom: 0.15rem;
}
.panel-person-name {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.88rem; font-weight: 600;
  color: var(--text-primary);
}
.panel-person-org {
  font-size: 0.75rem; color: var(--text-muted);
}

/* ══════════════════════════════════════════════════════
   SCHEDULE
   ══════════════════════════════════════════════════════ */
#schedule {
  padding: 7rem 0;
  background: var(--bg-mid);
  position: relative;
}
#schedule::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

.schedule-header { text-align: center; margin-bottom: 4rem; }

.schedule-notice {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.8rem; color: var(--text-dim);
  border: 1px solid rgba(148,163,184,0.15);
  padding: 0.4rem 1rem;
  border-radius: 6px;
  margin-top: 0.75rem;
  background: rgba(148,163,184,0.04);
}

.timeline {
  position: relative;
  max-width: 780px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute; top: 0; bottom: 0; left: 110px;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--border), var(--accent-cyan), var(--border), transparent);
}

.timeline-item {
  display: grid;
  grid-template-columns: 110px 24px 1fr;
  gap: 0 1.25rem;
  margin-bottom: 1.5rem;
  align-items: start;
}

.timeline-time {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.78rem; font-weight: 600;
  color: var(--text-dim);
  text-align: right;
  padding-top: 0.9rem;
  white-space: nowrap;
}

.timeline-dot {
  position: relative; flex-shrink: 0;
  display: flex; align-items: flex-start; justify-content: center;
  padding-top: 0.9rem;
}
.timeline-dot::after {
  content: '';
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
  flex-shrink: 0;
}
.timeline-dot.dot-red::after  { background: var(--accent-red);  box-shadow: 0 0 10px var(--accent-red); }
.timeline-dot.dot-gold::after { background: var(--accent-gold); box-shadow: 0 0 10px var(--accent-gold); }
.timeline-dot.dot-dim::after  { background: var(--text-dim);    box-shadow: none; }

.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.timeline-content:hover { border-color: var(--accent-cyan); box-shadow: var(--shadow-glow-cyan); }
.timeline-content.content-gold { border-color: rgba(200,169,81,0.25); }
.timeline-content.content-gold:hover { border-color: var(--accent-gold); box-shadow: var(--shadow-glow-gold); }
.timeline-content.content-break {
  background: rgba(148,163,184,0.04);
  border-color: rgba(148,163,184,0.1);
}

.timeline-event {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.92rem; font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.15rem;
}

.timeline-detail {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.timeline-track {
  font-size: 0.65rem; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  margin-bottom: 0.35rem;
  display: inline-block;
}
.track-keynote    { background: rgba(200,169,81,0.12); color: var(--accent-gold); }
.track-academic   { background: rgba(0,212,255,0.1);   color: var(--accent-cyan); }
.track-industry   { background: rgba(224,1,34,0.1);    color: #ff6080; }
.track-panel      { background: rgba(148,163,184,0.12); color: var(--text-muted); }
.track-admin      { background: transparent; color: var(--text-dim); }

/* ══════════════════════════════════════════════════════
   VENUE
   ══════════════════════════════════════════════════════ */
#venue {
  padding: 7rem 0;
  background: var(--bg-dark);
}

.venue-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.venue-map {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  height: 380px;
  background: var(--bg-card);
  position: relative;
}

.venue-map iframe {
  width: 100%; height: 100%;
  filter: invert(92%) hue-rotate(200deg) saturate(1.2) brightness(0.85);
  border: none;
}

.venue-info { padding-top: 0.5rem; }

.venue-name {
  font-size: 1.6rem; font-weight: 700;
  margin-bottom: 0.5rem;
}

.venue-address {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.75rem;
}

.venue-features {
  list-style: none;
  margin-bottom: 2rem;
}
.venue-features li {
  display: flex; align-items: center; gap: 0.75rem;
  font-size: 0.9rem; color: var(--text-muted);
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(148,163,184,0.08);
}
.venue-features li::before {
  content: '▸';
  color: var(--accent-cyan);
  font-size: 0.8rem;
}

.btn-directions {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.85rem; font-weight: 600;
  color: var(--accent-cyan);
  border: 1px solid var(--border);
  padding: 0.65rem 1.5rem;
  border-radius: 8px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.btn-directions:hover {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow-cyan);
  color: var(--accent-cyan);
}

/* ══════════════════════════════════════════════════════
   HOTELS
   ══════════════════════════════════════════════════════ */
#hotels {
  padding: 7rem 0;
  background: var(--bg-dark);
  position: relative;
}
#hotels::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

.hotels-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.hotel-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.hotel-card:hover {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow-cyan);
  transform: translateY(-4px);
}

.hotel-icon { font-size: 2rem; margin-bottom: 0.75rem; display: block; }

.hotel-name {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.2rem; font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.hotel-area {
  font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 0.85rem;
}

.hotel-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.hotel-link {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.82rem; font-weight: 600;
  color: var(--accent-cyan);
  border: 1px solid var(--border);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  transition: border-color var(--transition), background var(--transition), box-shadow var(--transition);
}
.hotel-link:hover {
  border-color: var(--accent-cyan);
  background: rgba(0,212,255,0.08);
  box-shadow: var(--shadow-glow-cyan);
  color: var(--accent-cyan);
}

@media (max-width: 600px) {
  .hotels-grid { grid-template-columns: 1fr; }
}

/* ══════════════════════════════════════════════════════
   REGISTRATION
   ══════════════════════════════════════════════════════ */
#register {
  padding: 7rem 0;
  background: var(--bg-mid);
  position: relative;
  overflow: hidden;
}
#register::before {
  content: '';
  position: absolute; top: -200px; left: 50%; transform: translateX(-50%);
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(224,1,34,0.06) 0%, transparent 65%);
  pointer-events: none;
}

.register-header { text-align: center; margin-bottom: 3.5rem; }

/* ── Registration panel (split: inclusions | rates) ── */
.register-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  max-width: 700px;
  margin: 0 auto 3rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.register-includes {
  padding: 2.5rem 2rem;
  border-right: 1px solid var(--border);
}

.register-rates {
  padding: 2.5rem 2rem;
}

.register-panel-label {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.75rem; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.rate-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 0;
}

.rate-price {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.25rem; font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  min-width: 72px;
}

.rate-price.student {
  color: var(--accent-cyan);
}

.rate-type {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.9rem; font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.rate-note {
  font-size: 0.75rem;
  color: var(--text-dim);
}

.rate-divider {
  height: 1px;
  background: var(--border);
  margin: 0.25rem 0;
}

/* kept for reuse in register-includes */

.pricing-features {
  list-style: none;
  text-align: left;
  margin-bottom: 0;
}
.pricing-features li {
  font-size: 0.85rem; color: var(--text-muted);
  padding: 0.4rem 0;
  display: flex; align-items: center; gap: 0.5rem;
}
.pricing-features li::before { content: '✓'; color: var(--accent-cyan); font-weight: 700; }

.register-deadline-notice {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  max-width: 680px;
  margin: 1.75rem auto 0;
  padding: 1rem 1.25rem;
  border: 1px solid rgba(255, 180, 0, 0.35);
  border-left: 3px solid #f0a500;
  border-radius: 6px;
  background: rgba(240, 165, 0, 0.07);
  color: #f5c842;
  font-size: 0.9rem;
  line-height: 1.55;
}
.register-deadline-notice strong { color: #ffd166; }

.register-cta {
  text-align: center;
}
.register-cta p {
  font-size: 0.85rem; color: var(--text-dim);
  margin-top: 1rem;
}

/* ══════════════════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════════════════ */
footer {
  background: #010610;
  border-top: 1px solid var(--border);
  padding: 3.5rem 0 2rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 2.5rem;
}

.footer-brand-logo {
  display: inline-flex; align-items: center;
  background: #fff;
  padding: 5px 10px;
  border-radius: 7px;
  margin-bottom: 1rem;
  line-height: 0;
}
.footer-brand-logo img {
  height: 46px; width: auto;
  display: block;
}

.footer-tagline {
  font-size: 0.85rem; color: var(--text-dim);
  line-height: 1.6;
}

.footer-col-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.75rem; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: flex; flex-direction: column; gap: 0.5rem;
}
.footer-links a {
  font-size: 0.85rem; color: var(--text-dim);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--accent-cyan); }

.footer-bottom {
  border-top: 1px solid rgba(148,163,184,0.08);
  padding-top: 1.5rem;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 0.75rem;
}

.footer-copy {
  font-size: 0.78rem; color: var(--text-dim);
}

.footer-credit {
  font-size: 0.78rem; color: var(--text-dim);
}
.footer-credit a { color: var(--accent-cyan); }

/* ══════════════════════════════════════════════════════
   MODAL
   ══════════════════════════════════════════════════════ */
.modal-overlay {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(2, 8, 24, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex; align-items: center; justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  max-width: 680px; width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 2.5rem;
  position: relative;
  box-shadow: 0 40px 80px rgba(0,0,0,0.5), var(--shadow-glow-cyan);
  transform: scale(0.95) translateY(20px);
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1), opacity 0.3s ease;
}
.modal-overlay.active .modal-box {
  transform: scale(1) translateY(0);
}

.modal-close {
  position: absolute; top: 1.25rem; right: 1.25rem;
  background: rgba(148,163,184,0.1); border: none; cursor: pointer;
  color: var(--text-muted); font-size: 1.25rem;
  width: 32px; height: 32px;
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition), color var(--transition);
}
.modal-close:hover { background: rgba(224,1,34,0.2); color: var(--accent-red); }

.modal-header {
  display: flex; align-items: center; gap: 1.5rem;
  margin-bottom: 1.75rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--border);
}

.modal-photo-wrap {
  width: 88px; height: 88px;
  border-radius: 50%; overflow: hidden; flex-shrink: 0;
}
.modal-photo-wrap img, .modal-photo-initials {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center top;
  border-radius: 50%;
}
.modal-photo-initials {
  display: flex; align-items: center; justify-content: center;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.8rem; font-weight: 700;
  color: var(--accent-cyan);
  background: linear-gradient(135deg, rgba(0,212,255,0.12), var(--bg-mid));
}

.modal-name { font-size: 1.4rem; font-weight: 700; margin-bottom: 0.2rem; }
.modal-role { font-size: 0.88rem; color: var(--accent-cyan); margin-bottom: 0.1rem; }
.modal-org  { font-size: 0.85rem; color: var(--text-muted); }

.modal-section-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 0.6rem;
}

.modal-talk-title {
  font-size: 1rem; font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.modal-abstract, .modal-bio {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.75;
}

.modal-section { margin-bottom: 1.5rem; }

/* ══════════════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════════════ */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; }
  .keynote-card { grid-template-columns: 1fr; text-align: center; justify-items: center; }
  .keynote-desc { max-width: 100%; }
  .venue-grid { grid-template-columns: 1fr; }
  .venue-map { height: 280px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 700px) {
  .nav-links { display: none; flex-direction: column; position: fixed; inset: 0; top: 60px;
    background: rgba(2,8,24,0.97); backdrop-filter: blur(20px);
    padding: 2rem; gap: 1.25rem; z-index: 999; }
  .nav-links.open { display: flex; }
  .nav-hamburger { display: flex; }
  .register-panel { grid-template-columns: 1fr; max-width: 400px; }
  .register-includes { border-right: none; border-bottom: 1px solid var(--border); }
  .footer-inner { grid-template-columns: 1fr; }
  .hero-countdown { gap: 0.75rem; }
  .countdown-block { min-width: 60px; padding: 0.65rem 0.8rem; }
  .countdown-num { font-size: 1.75rem; }
  .timeline::before { left: 80px; }
  .timeline-item { grid-template-columns: 80px 20px 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .speakers-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .speakers-grid { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: 1fr 1fr; }
}