/* ═══════════════════════════════════════════════════════════════
   ICPI 2026 — Premium Dark Conference Design
   Award-winning level UI with GSAP, glassmorphism, bento grids
   ═══════════════════════════════════════════════════════════════ */

:root {
  --bg-primary: #0a0a0f;
  --bg-surface: #12121a;
  --bg-elevated: #1a1a2e;
  --bg-card: rgba(255,255,255,0.04);
  --bg-card-hover: rgba(255,255,255,0.07);

  --accent-1: #0596b0;
  --accent-1-light: #0bb5d4;
  --accent-2: #4fbcb5;
  --accent-3: #3da8a0;
  --accent-glow-1: rgba(5,150,176,0.15);
  --accent-glow-2: rgba(79,188,181,0.15);

  --text-primary: #f1f5f9;
  --text-secondary: rgba(241,245,249,0.6);
  --text-tertiary: rgba(241,245,249,0.35);
  --text-heading: #ffffff;

  --border: rgba(255,255,255,0.06);
  --border-hover: rgba(255,255,255,0.12);
  --border-accent: rgba(5,150,176,0.3);

  --track1: #0596b0;
  --track2: #4fbcb5;
  --track3: #0bb5d4;
  --track4: #3da8a0;
  --track5: #07839b;

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-pill: 100px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: var(--accent-1); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-1-light); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
section { position: relative; }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

/* ── Scroll Progress ── */
#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-1), var(--accent-2));
  width: 0%;
  z-index: 10000;
  transition: none;
}

/* ── Utility ── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }
.text-gradient {
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.gs-reveal { opacity: 0; transform: translateY(50px); transition: opacity 0.7s ease, transform 0.7s ease; }
.gs-reveal.revealed { opacity: 1; transform: translateY(0); }

/* ══════════════════════════════════════════
   NAVIGATION — Floating Pill
   ══════════════════════════════════════════ */
#mainNav {
  position: fixed;
  top: 1rem;
  left: 50%;
  transform: translateX(-50%);
  width: min(92%, 1200px);
  background: rgba(10, 10, 15, 0.5);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 0.6rem 1.5rem;
  z-index: 1000;
  transition: all 0.4s ease;
}
#mainNav.scrolled {
  background: rgba(10, 10, 15, 0.88);
  border-color: var(--border-hover);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-primary);
  text-decoration: none;
}
.nav-logo { height: 44px; width: auto; opacity: 0.9; }
.nav-links { display: flex; align-items: center; gap: 0.15rem; }
.nav-links a {
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius);
  transition: var(--transition);
  position: relative;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--text-primary);
  background: rgba(255,255,255,0.06);
}
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 2px;
  background: var(--accent-1);
  border-radius: 1px;
}
.nav-cta-btn {
  background: var(--accent-1) !important;
  color: var(--bg-primary) !important;
  font-weight: 700 !important;
  font-size: 0.72rem !important;
  padding: 0.4rem 1rem !important;
  border-radius: var(--radius-pill) !important;
  text-transform: uppercase !important;
  letter-spacing: 0.08em !important;
}
.nav-cta-btn:hover {
  background: var(--accent-1-light) !important;
  box-shadow: 0 0 20px var(--accent-glow-1);
}

/* Hamburger */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  width: 28px;
  height: 20px;
  cursor: pointer;
  position: relative;
  padding: 0;
}
.hamburger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
  position: absolute;
  left: 0;
}
.hamburger-line:nth-child(1) { top: 0; }
.hamburger-line:nth-child(2) { top: 50%; transform: translateY(-50%); }
.hamburger-line:nth-child(3) { bottom: 0; }
.nav-toggle.active .hamburger-line:nth-child(1) { top: 50%; transform: translateY(-50%) rotate(45deg); }
.nav-toggle.active .hamburger-line:nth-child(2) { opacity: 0; }
.nav-toggle.active .hamburger-line:nth-child(3) { bottom: 50%; transform: translateY(50%) rotate(-45deg); }

@media (max-width: 991px) {
  .nav-toggle { display: block; }
  #mainNav { border-radius: var(--radius-lg); }
  .nav-links {
    display: none;
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(18, 18, 26, 0.98);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1rem;
    box-shadow: 0 16px 48px rgba(0,0,0,0.5);
    gap: 0.25rem;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 0.65rem 1rem; width: 100%; font-size: 0.9rem; }
}

/* ══════════════════════════════════════════
   HERO — Mesh Gradient + Grain
   ══════════════════════════════════════════ */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: var(--bg-primary);
}
.hero-mesh {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 20% 50%, rgba(5,150,176,0.18) 0%, transparent 60%),
    radial-gradient(ellipse 50% 60% at 80% 20%, rgba(79,188,181,0.15) 0%, transparent 50%),
    radial-gradient(ellipse 40% 40% at 60% 80%, rgba(61,168,160,0.08) 0%, transparent 50%);
  animation: meshShift 15s ease-in-out infinite alternate;
}
@keyframes meshShift {
  0% { opacity: 1; }
  50% { opacity: 0.7; transform: scale(1.05) rotate(1deg); }
  100% { opacity: 0.9; transform: scale(1.02) rotate(-0.5deg); }
}
.hero-grain {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  opacity: 0.4;
  mix-blend-mode: overlay;
  pointer-events: none;
  z-index: 1;
}
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.25;
  animation: orbFloat 20s ease-in-out infinite;
  z-index: 0;
}
.hero-orb-1 { width: 500px; height: 500px; background: rgba(5,150,176,0.2); top: -15%; right: -10%; animation-duration: 22s; }
.hero-orb-2 { width: 350px; height: 350px; background: rgba(79,188,181,0.15); bottom: -10%; left: 5%; animation-duration: 28s; animation-direction: reverse; }
.hero-orb-3 { width: 250px; height: 250px; background: rgba(61,168,160,0.1); top: 40%; left: -8%; animation-duration: 18s; animation-delay: -6s; }
@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(40px, -50px) scale(1.08); }
  66% { transform: translate(-30px, 30px) scale(0.92); }
}

/* Floating dental icons */
.hero-icon {
  position: absolute;
  color: var(--accent-1);
  opacity: 0.12;
  z-index: 0;
  pointer-events: none;
  animation: iconFloat 20s ease-in-out infinite;
}
.hero-icon svg { width: 100%; height: 100%; }
.hero-icon-1 { width: 90px; height: 90px; top: 12%; left: 6%; animation-duration: 24s; }
.hero-icon-2 { width: 65px; height: 65px; top: 20%; right: 5%; animation-duration: 20s; animation-delay: -4s; }
.hero-icon-3 { width: 55px; height: 55px; bottom: 32%; left: 4%; animation-duration: 26s; animation-delay: -8s; opacity: 0.09; }
.hero-icon-4 { width: 75px; height: 75px; bottom: 12%; right: 8%; animation-duration: 22s; animation-delay: -2s; }
.hero-icon-5 { width: 45px; height: 45px; top: 55%; left: 12%; animation-duration: 18s; animation-delay: -6s; opacity: 0.08; }
.hero-icon-6 { width: 60px; height: 60px; top: 6%; right: 18%; animation-duration: 28s; animation-delay: -10s; opacity: 0.10; }
@keyframes iconFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25% { transform: translateY(-20px) rotate(5deg); }
  50% { transform: translateY(10px) rotate(-3deg); }
  75% { transform: translateY(-15px) rotate(4deg); }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  padding: 140px 2rem 60px;
  margin: 0 auto;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  backdrop-filter: blur(10px);
  padding: 0.5rem 1.5rem;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
}
.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-1);
  animation: dotPulse 2s ease-in-out infinite;
}
@keyframes dotPulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 var(--accent-glow-1); }
  50% { opacity: 0.7; box-shadow: 0 0 0 6px transparent; }
}
.hero-title {
  font-size: clamp(2.2rem, 6vw, 4.5rem);
  font-weight: 800;
  color: var(--text-heading);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}
.hero-theme {
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  font-weight: 400;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  font-style: italic;
}
.hero-location {
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin-bottom: 1.5rem;
}
.hero-location i { color: var(--accent-1); margin-right: 0.3rem; }
.hero-organizers {
  font-size: 0.68rem;
  color: var(--text-tertiary);
  max-width: 600px;
  margin: 1rem auto 0;
  line-height: 1.5;
}

/* Hero floating stat cards */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}
.hero-stat-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  backdrop-filter: blur(16px);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  min-width: 120px;
  text-align: center;
  transition: var(--transition-spring);
}
.hero-stat-card:hover {
  background: rgba(255,255,255,0.07);
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(5,150,176,0.1);
}
.hero-stat-number {
  display: block;
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--text-heading);
  line-height: 1;
  letter-spacing: -0.02em;
}
.hero-stat-number.has-plus::after { content: '+'; }
.hero-stat-label {
  display: block;
  font-size: 0.68rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 0.35rem;
  font-weight: 500;
}

/* Countdown */
#countdown {
  display: flex;
  justify-content: center;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}
.countdown-item {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 0.8rem 0.3rem;
  min-width: 72px;
  text-align: center;
}
.countdown-number {
  display: block;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 800;
  color: var(--text-heading);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.countdown-label {
  display: block;
  font-size: 0.58rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-tertiary);
  margin-top: 0.3rem;
  font-weight: 500;
}
.countdown-separator {
  font-size: 1.3rem;
  font-weight: 300;
  color: rgba(255,255,255,0.15);
  align-self: center;
  margin-top: -0.5rem;
}
.countdown-live {
  display: inline-block;
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent-1);
  padding: 0.5rem 1.5rem;
  background: var(--accent-glow-1);
  border: 1px solid rgba(5,150,176,0.3);
  border-radius: var(--radius-pill);
}

/* Hero CTAs */
.hero-cta { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; }

/* Shared button styles */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent-1);
  color: var(--bg-primary);
  font-weight: 700;
  font-size: 0.82rem;
  padding: 0.8rem 1.8rem;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  letter-spacing: 0.02em;
}
.btn-primary:hover {
  background: var(--accent-1-light);
  color: var(--bg-primary);
  box-shadow: 0 0 30px var(--accent-glow-1), 0 8px 30px rgba(0,0,0,0.3);
  transform: translateY(-2px);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.82rem;
  padding: 0.8rem 1.8rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255,255,255,0.15);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}
.btn-outline:hover {
  border-color: rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.05);
  color: var(--text-heading);
  transform: translateY(-2px);
}

/* ══════════════════════════════════════════
   KEY DATES BAR
   ══════════════════════════════════════════ */
#dates-bar {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
  z-index: 4;
}
.dates-row { display: flex; justify-content: center; flex-wrap: wrap; }
.date-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.1rem 1.5rem;
  border-right: 1px solid var(--border);
  transition: var(--transition);
}
.date-item:last-child { border-right: none; }
.date-item:hover { background: rgba(255,255,255,0.02); }
.date-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow-1);
  color: var(--accent-1);
  font-size: 0.85rem;
  flex-shrink: 0;
}
.date-item strong {
  display: block;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-tertiary);
  font-weight: 500;
}
.date-item span { display: block; font-size: 0.85rem; font-weight: 600; color: var(--text-primary); }
.date-item a { color: var(--accent-1); font-weight: 600; }

/* ══════════════════════════════════════════
   SECTION STYLES
   ══════════════════════════════════════════ */
.section { padding: 100px 0; }
.section-alt { background: var(--bg-surface); }

.section-header { text-align: center; margin-bottom: 4rem; }
.section-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-1);
  margin-bottom: 0.75rem;
  background: var(--accent-glow-1);
  padding: 0.3rem 1rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(5,150,176,0.15);
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--text-heading);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 1rem;
}
.section-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}
.subsection-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-heading);
  text-align: center;
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
}

/* ══════════════════════════════════════════
   ABOUT
   ══════════════════════════════════════════ */
.about-content { max-width: 800px; margin: 0 auto 3rem; }
.about-text p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1.25rem;
}
.about-quote {
  position: relative;
  padding: 1.5rem 2rem;
  margin: 2rem 0;
  background: rgba(5,150,176,0.04);
  border-radius: var(--radius);
  overflow: hidden;
}
.quote-bar {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--accent-1), var(--accent-2));
}
.about-quote p {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  font-style: italic;
  margin: 0;
  line-height: 1.6;
}

/* Bento Grid */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 3rem;
}
.bento-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition-spring);
  position: relative;
}
.bento-card:hover {
  background: var(--bg-elevated);
  border-color: var(--accent-1);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3), 0 0 30px var(--accent-glow-1);
}
.bento-featured { grid-column: span 2; }
.bento-wide { grid-column: span 2; }
.bento-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--accent-glow-1), var(--accent-glow-2));
  color: var(--accent-1);
}
.bento-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}
.bento-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Committee */
.committee-section { margin-top: 3rem; }
.committee-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.6rem;
}
.committee-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  text-align: center;
  transition: var(--transition);
}
.committee-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}
.committee-card.leader {
  background: var(--accent-glow-1);
  border-color: rgba(5,150,176,0.2);
}
.committee-card.secretariat { border-left: 3px solid var(--accent-1); }
.committee-card strong { display: block; font-size: 0.82rem; color: var(--text-primary); }
.committee-card span { font-size: 0.7rem; color: var(--text-tertiary); }
.committee-badge {
  display: inline-block;
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-pill);
  margin-bottom: 0.3rem;
}
.committee-badge.chair { background: var(--accent-1); color: var(--bg-primary); }
.committee-badge.cochair { background: transparent; color: var(--accent-1); border: 1.5px solid var(--accent-1); }
.committee-badge.sec { background: var(--accent-glow-1); color: var(--accent-1); font-size: 0.55rem; }

/* Collapsible scientific committee */
.committee-collapsible {
  max-height: 220px;
  overflow: hidden;
  position: relative;
  transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.committee-collapsible::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80px;
  background: linear-gradient(to top, var(--bg-primary), transparent);
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.committee-collapsible.expanded {
  max-height: 2000px;
}
.committee-collapsible.expanded::after {
  opacity: 0;
}
.committee-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin: 1rem auto 0;
  padding: 0.5rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  color: var(--accent-1);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.committee-toggle:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-1);
}
.committee-toggle i {
  transition: transform 0.3s ease;
  font-size: 0.65rem;
}
.committee-toggle.expanded i {
  transform: rotate(180deg);
}

/* ══════════════════════════════════════════
   PROGRAM / SCHEDULE
   ══════════════════════════════════════════ */
.day-tabs {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  margin-bottom: 2.5rem;
}
.day-btn {
  padding: 0.75rem 2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font);
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.day-btn:hover { border-color: var(--border-hover); background: var(--bg-card-hover); }
.day-btn.active {
  background: linear-gradient(135deg, rgba(5,150,176,0.15), rgba(79,188,181,0.1));
  border-color: var(--border-accent);
  box-shadow: 0 0 20px var(--accent-glow-1);
}
.day-btn-label { font-size: 1rem; font-weight: 700; color: var(--text-heading); }
.day-btn-date { font-size: 0.72rem; color: var(--text-tertiary); }
.day-btn.active .day-btn-label { color: var(--accent-1); }

/* Timeline */
.timeline { position: relative; max-width: 900px; margin: 0 auto; }
.timeline::before {
  content: '';
  position: absolute;
  left: 110px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-1), var(--accent-2), var(--border));
}
.slot { display: flex; gap: 1.5rem; margin-bottom: 0.6rem; position: relative; }
.slot-time {
  min-width: 95px;
  padding-top: 1rem;
  text-align: right;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-tertiary);
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}
.slot::after {
  content: '';
  position: absolute;
  left: 106px;
  top: 1.15rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 2px solid rgba(255,255,255,0.15);
  z-index: 1;
}
.slot-body {
  flex: 1;
  margin-left: 0.5rem;
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.slot-body:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateX(4px);
}
.slot-body.type-keynote { border-left: 3px solid var(--accent-3); background: rgba(61,168,160,0.03); }
.slot.slot-keynote::after { border-color: var(--accent-3); background: var(--accent-3); }
.slot-body.type-break { background: rgba(255,255,255,0.015); border-color: transparent; }
.slot.slot-break::after { border-color: rgba(255,255,255,0.1); background: rgba(255,255,255,0.1); }
.slot-body.type-social { border-left: 3px solid var(--track2); background: rgba(79,188,181,0.03); }
.slot.slot-social::after { border-color: var(--track2); background: var(--track2); }
.slot-body.type-opening { border-left: 3px solid var(--accent-1); background: rgba(5,150,176,0.03); }
.slot.slot-opening::after { border-color: var(--accent-1); background: var(--accent-1); }
.slot-body.type-session { border-left: 3px solid var(--accent-2); }
.slot.slot-session::after { border-color: var(--accent-2); background: var(--accent-2); }
.slot-body.type-registration { background: rgba(255,255,255,0.015); border-left: 3px solid rgba(255,255,255,0.1); }

.slot-type {
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: 0.2rem;
}
.type-keynote .slot-type { color: var(--accent-3); }
.type-social .slot-type { color: var(--track2); }
.type-session .slot-type { color: var(--accent-2); }
.type-opening .slot-type { color: var(--accent-1); }
.slot-body h4 { font-size: 0.9rem; font-weight: 700; color: var(--text-heading); margin-bottom: 0.15rem; }
.slot-body p { font-size: 0.8rem; color: var(--text-secondary); margin: 0.15rem 0; }

.parallel-tracks { display: grid; grid-template-columns: 1fr 1fr; gap: 0.6rem; flex: 1; margin-left: 0.5rem; }

.track-tag {
  display: inline-block;
  font-size: 0.6rem;
  font-weight: 600;
  padding: 0.12rem 0.6rem;
  border-radius: var(--radius-pill);
  margin-top: 0.35rem;
}
.t1 { background: rgba(5,150,176,0.18); color: var(--accent-1-light); }
.t2 { background: rgba(79,188,181,0.18); color: #4fbcb5; }
.t3 { background: rgba(61,168,160,0.18); color: #3da8a0; }
.t4 { background: rgba(61,168,160,0.18); color: #3da8a0; }
.t5 { background: rgba(7,131,155,0.18); color: #0bb5d4; }

.schedule-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
.legend-item { display: flex; align-items: center; gap: 0.4rem; font-size: 0.75rem; color: var(--text-secondary); }
.legend-dot { width: 8px; height: 8px; border-radius: 50%; }
.legend-keynote { background: var(--accent-3); }
.legend-session { background: var(--accent-2); }
.legend-break { background: rgba(255,255,255,0.15); }
.legend-social { background: var(--track2); }

/* ══════════════════════════════════════════
   TRACKS
   ══════════════════════════════════════════ */
.tracks-list { max-width: 900px; margin: 0 auto; }
.track-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 1rem;
  transition: var(--transition-spring);
  position: relative;
}
.track-card:hover {
  background: var(--bg-elevated);
  transform: translateX(6px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.track-card[data-track="1"]:hover { border-color: var(--track1); box-shadow: 0 20px 60px rgba(0,0,0,0.3), 0 0 30px rgba(5,150,176,0.1); }
.track-card[data-track="2"]:hover { border-color: var(--track2); box-shadow: 0 20px 60px rgba(0,0,0,0.3), 0 0 30px rgba(79,188,181,0.1); }
.track-card[data-track="3"]:hover { border-color: var(--track3); box-shadow: 0 20px 60px rgba(0,0,0,0.3), 0 0 30px rgba(61,168,160,0.1); }
.track-card[data-track="4"]:hover { border-color: var(--track4); box-shadow: 0 20px 60px rgba(0,0,0,0.3), 0 0 30px rgba(61,168,160,0.1); }
.track-card[data-track="5"]:hover { border-color: var(--track5); box-shadow: 0 20px 60px rgba(0,0,0,0.3), 0 0 30px rgba(7,131,155,0.1); }

/* Collapsible track cards */
.track-card { cursor: pointer; }
.track-card-header { margin-bottom: 0; position: relative; padding-right: 2rem; }
.track-card-header::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.7rem;
  color: var(--text-tertiary);
  transition: transform 0.3s ease;
}
.track-card.expanded .track-card-header::after {
  transform: translateY(-50%) rotate(180deg);
}
.track-card-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), margin 0.3s ease;
  margin-top: 0;
}
.track-card.expanded .track-card-body {
  max-height: 500px;
  margin-top: 0.75rem;
}
.track-card .track-tag { margin-bottom: 0.5rem; }
.track-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-heading);
  letter-spacing: -0.01em;
  margin-top: 0.5rem;
}
.track-card > p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.7; margin-bottom: 0.75rem; }
.topic-pills { display: grid; grid-template-columns: 1fr 1fr; gap: 0.4rem; }
.topic-pill {
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--accent-1-light);
  background: rgba(5,150,176,0.08);
  border: 1px solid rgba(5,150,176,0.15);
  border-radius: var(--radius);
  padding: 0.4rem 0.75rem;
  transition: var(--transition);
  line-height: 1.3;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}
.topic-pill:hover {
  background: var(--accent-glow-1);
  border-color: var(--border-accent);
  color: var(--accent-1-light);
  transform: translateY(-1px);
}

/* ══════════════════════════════════════════
   SPEAKERS
   ══════════════════════════════════════════ */
.speakers-keynote-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 3rem;
}
.keynote-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: var(--transition-spring);
  position: relative;
}
.keynote-card:hover {
  background: var(--bg-elevated);
  border-color: var(--accent-1);
  transform: translateY(-8px);
  box-shadow: 0 24px 60px rgba(0,0,0,0.4), 0 0 30px var(--accent-glow-1);
}
.keynote-photo {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: linear-gradient(135deg, var(--bg-elevated), rgba(5,150,176,0.1));
}
.keynote-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 0.6s ease;
  filter: grayscale(20%);
}
.keynote-avatar {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-1);
  background: linear-gradient(135deg, var(--bg-elevated), rgba(5,150,176,0.15));
}
.keynote-card:hover .keynote-photo img { transform: scale(1.08); filter: grayscale(0%); }
.keynote-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,10,15,0.8) 0%, transparent 50%);
  display: flex;
  align-items: flex-end;
  padding: 1rem;
}
.keynote-badge {
  background: var(--accent-1);
  color: var(--bg-primary);
  font-size: 0.6rem;
  font-weight: 700;
  padding: 0.25rem 0.8rem;
  border-radius: var(--radius-pill);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.keynote-info { padding: 1.5rem; }
.keynote-info h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 0.2rem;
  letter-spacing: -0.01em;
}
.keynote-role {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--accent-1);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}
.keynote-info p { font-size: 0.82rem; color: var(--text-secondary); line-height: 1.65; margin-bottom: 0.5rem; }

/* Collapsible keynote bio */
.keynote-bio {
  max-height: 4.5em;
  overflow: hidden;
  position: relative;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.keynote-bio.expanded {
  max-height: 500px;
}
.keynote-read-more {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-1);
  cursor: pointer;
  margin-top: 0.6rem;
  padding: 0.3rem 0;
  transition: var(--transition);
  border: none;
  background: none;
}
.keynote-read-more:hover { color: var(--accent-1-light); }

/* Mini speakers */
.speakers-mini-section { margin-top: 2.5rem; }
.speakers-mini-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(160px, 220px));
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
}
.speaker-mini-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 0.75rem;
  text-align: center;
  transition: var(--transition-spring);
}
.speaker-mini-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.2);
}
.speaker-avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  background: linear-gradient(135deg, var(--accent-glow-1), var(--accent-glow-2));
  color: var(--accent-1);
}
.speaker-avatar.alt { background: rgba(255,255,255,0.05); color: var(--text-secondary); }
.speaker-mini-card strong { display: block; font-size: 0.78rem; color: var(--text-primary); margin-bottom: 0.15rem; }
.speaker-mini-card span { font-size: 0.68rem; color: var(--text-tertiary); line-height: 1.4; display: block; }

/* ══════════════════════════════════════════
   ABSTRACTS
   ══════════════════════════════════════════ */
.deadline-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.85rem 2rem;
  margin-bottom: 2.5rem;
  background: linear-gradient(135deg, var(--accent-glow-1), var(--accent-glow-2));
  border: 1px solid rgba(5,150,176,0.2);
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  color: var(--text-primary);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
}
.deadline-pulse {
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  border: 1px solid var(--accent-1);
  animation: deadlinePulse 2s ease-in-out infinite;
}
@keyframes deadlinePulse {
  0%, 100% { opacity: 0; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.02); }
}
.deadline-banner i { color: var(--accent-1); }

.abstract-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  max-width: 900px;
  margin: 0 auto 2rem;
}
.abstract-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: var(--transition);
}
.abstract-box:hover { background: var(--bg-card-hover); border-color: var(--border-hover); }
.abstract-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow-1);
  color: var(--accent-1);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}
.abstract-box h4 { font-size: 0.95rem; font-weight: 700; color: var(--text-heading); margin-bottom: 0.6rem; }
.abstract-box p, .abstract-box li { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.7; }
.abstract-box ul { padding-left: 1.25rem; list-style: disc; }
.abstract-box ul li { margin-bottom: 0.25rem; }

.abstract-footer { max-width: 900px; margin: 0 auto; }
.abstract-publish {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 0.75rem;
}
.abstract-publish i { color: var(--accent-3); font-size: 1.1rem; }
.abstract-publish p { margin: 0; font-size: 0.88rem; color: var(--text-secondary); }
.abstract-contact-box {
  background: linear-gradient(135deg, var(--accent-glow-1), var(--accent-glow-2));
  border: 1px solid rgba(5,150,176,0.2);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
}
.abstract-contact-box p { margin: 0; color: var(--text-primary); font-weight: 500; font-size: 0.88rem; }
.abstract-contact-box i { color: var(--accent-1); margin-right: 0.3rem; }
.abstract-contact-box a { color: var(--accent-1); font-weight: 700; }

/* ══════════════════════════════════════════
   REGISTRATION
   ══════════════════════════════════════════ */
.reg-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 3rem;
}
.reg-price-card {
  background: linear-gradient(135deg, rgba(5,150,176,0.08), rgba(79,188,181,0.05));
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-xl);
  padding: 2.5rem 2rem;
  text-align: center;
}
.reg-price-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-1);
  margin-bottom: 0.5rem;
}
.reg-fee {
  font-size: 4rem;
  font-weight: 800;
  color: var(--text-heading);
  line-height: 1;
  margin-bottom: 0.5rem;
  letter-spacing: -0.03em;
}
.reg-price-card > p { font-size: 0.82rem; color: var(--text-tertiary); margin-bottom: 1.5rem; }
.reg-info-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 2rem;
}
.reg-info-card h4 { font-size: 1rem; font-weight: 700; color: var(--text-heading); margin-bottom: 1rem; }
.reg-contact-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.6rem;
  font-size: 0.88rem;
}
.reg-contact-row i { color: var(--accent-1); font-size: 0.85rem; width: 20px; text-align: center; }
.reg-dates-mini { margin-top: 1.25rem; }
.reg-date-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
}
.reg-date-item:last-child { border-bottom: none; }
.reg-date-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-1);
  flex-shrink: 0;
}
.reg-date-dot.dot-2 { background: var(--accent-2); }
.reg-date-dot.dot-3 { background: var(--accent-3); }
.reg-date-item strong { display: block; font-size: 0.82rem; color: var(--text-primary); }
.reg-date-item span { font-size: 0.75rem; color: var(--text-tertiary); }

/* Includes */
.includes-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  max-width: 650px;
  margin: 0 auto 3rem;
}
.includes-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border);
}
.includes-item i { color: var(--accent-1); font-size: 0.8rem; flex-shrink: 0; }

/* Bank */
.bank-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.bank-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-card);
  transition: var(--transition);
  border: 1px solid transparent;
  position: relative;
}
.bank-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.bank-card.otp-card::before { background: linear-gradient(90deg, #13693D, #55B037); }
.bank-card.rai-card::before { background: #FDE81C; }
.bank-card.cre-card::before { background: #4909A1; }
.bank-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.3); }
.bank-card.otp-card:hover { border-color: #55B037; }
.bank-card.rai-card:hover { border-color: #FDE81C; }
.bank-card.cre-card:hover { border-color: #4909A1; }
.bank-logo {
  padding: 1rem 1.25rem;
  font-weight: 700;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  letter-spacing: 0.02em;
}
.bank-logo .bank-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  flex-shrink: 0;
}
.bank-logo.otp .bank-icon { background: linear-gradient(135deg, #13693D, #55B037); color: #fff; }
.bank-logo.rai .bank-icon { background: #FDE81C; color: #1a1a18; }
.bank-logo.cre .bank-icon { background: #4909A1; color: #fff; }
.bank-logo.otp { color: #55B037; }
.bank-logo.rai { color: #FDE81C; }
.bank-logo.cre { color: #c4a0ff; }
.bank-details { padding: 1rem 1.25rem; }
.bank-details p { font-size: 0.8rem; color: var(--text-secondary); margin-bottom: 0.5rem; }
.bank-details strong { color: var(--text-primary); }
.copy-iban {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.04);
  color: var(--accent-1);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
  margin-top: 0.4rem;
  font-family: var(--font);
}
.copy-iban:hover { background: var(--accent-1); color: var(--bg-primary); border-color: var(--accent-1); }
.copy-iban.copied { background: var(--track2); color: #fff; border-color: var(--track2); }
.payment-note { text-align: center; margin-top: 1.25rem; font-size: 0.78rem; color: var(--text-tertiary); }

/* ══════════════════════════════════════════
   VENUE
   ══════════════════════════════════════════ */
.venue-map {
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border);
  margin-bottom: 2.5rem;
}
.venue-map iframe { width: 100%; height: 300px; border: none; display: block; filter: invert(0.92) hue-rotate(180deg); }
.venue-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}
.venue-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: var(--transition);
}
.venue-card:hover { background: var(--bg-card-hover); border-color: var(--border-hover); }
.venue-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.venue-card h4 i { color: var(--accent-1); }
.venue-card p { font-size: 0.88rem; color: var(--text-secondary); margin-bottom: 0.4rem; line-height: 1.6; }
.venue-card a { color: var(--accent-1); font-weight: 600; }

.hotel-list { max-width: 700px; margin: 0 auto; }
.hotel-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  transition: var(--transition);
  border-bottom: 1px solid var(--border);
}
.hotel-item:last-child { border-bottom: none; }
.hotel-item:hover { background: var(--bg-card); }
.hotel-stars { color: var(--accent-3); font-size: 0.6rem; flex-shrink: 0; min-width: 70px; }
.hotel-item strong { flex: 1; font-size: 0.85rem; color: var(--text-primary); }
.hotel-item a { font-size: 0.72rem; color: var(--accent-1); font-weight: 600; }

/* ══════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════ */
#footer {
  background: var(--bg-surface);
  color: var(--text-tertiary);
  padding: 4rem 2rem 2rem;
  border-top: 1px solid var(--border);
}
.footer-inner { max-width: 1100px; margin: 0 auto; text-align: center; }
.footer-brand-area {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  margin-bottom: 0.5rem;
}
.footer-logo { height: 60px; width: auto; opacity: 0.7; }
#footer p { font-size: 0.82rem; margin-bottom: 0.3rem; }
#footer a { color: var(--accent-1); }
#footer a:hover { color: var(--accent-1-light); }
.footer-orgs { font-size: 0.7rem; opacity: 0.5; max-width: 550px; margin: 0.5rem auto 0; line-height: 1.5; }
.footer-divider { height: 1px; background: var(--border); margin: 1.5rem 0; }
.footer-copy { font-size: 0.65rem; opacity: 0.3; }

/* ══════════════════════════════════════════
   BACK TO TOP
   ══════════════════════════════════════════ */
#back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 99;
  pointer-events: none;
}
#back-to-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
#back-to-top:hover {
  background: var(--accent-1);
  color: var(--bg-primary);
  border-color: var(--accent-1);
  transform: translateY(-3px);
  box-shadow: 0 0 20px var(--accent-glow-1);
}

/* ══════════════════════════════════════════
   MOBILE STICKY CTA
   ══════════════════════════════════════════ */
#mobile-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.75rem 1rem;
  background: rgba(10,10,15,0.9);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border);
  z-index: 999;
  text-align: center;
}
#mobile-cta .btn-primary { width: 100%; justify-content: center; }

/* ══════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════ */
@media (max-width: 991px) {
  .bento-grid { grid-template-columns: 1fr 1fr; }
  .speakers-keynote-grid { grid-template-columns: 1fr 1fr; }
  .bank-grid { grid-template-columns: 1fr 1fr; }
  .section { padding: 80px 0; }
  .timeline::before { left: 80px; }
  .slot-time { min-width: 65px; }
  .slot::after { left: 76px; }
}

@media (max-width: 767px) {
  #mobile-cta { display: block; }
  #back-to-top { bottom: 5rem; }
  body { padding-bottom: 60px; }
  .bento-grid { grid-template-columns: 1fr; }
  .bento-featured, .bento-wide { grid-column: span 1; }
  .speakers-keynote-grid { grid-template-columns: 1fr; }
  .abstract-grid { grid-template-columns: 1fr; }
  .reg-hero { grid-template-columns: 1fr; }
  .venue-grid { grid-template-columns: 1fr; }
  .bank-grid { grid-template-columns: 1fr; }
  .includes-grid { grid-template-columns: 1fr; }
  .parallel-tracks { grid-template-columns: 1fr; }
  .day-tabs { flex-direction: column; }
  .day-btn { width: 100%; }
  .date-item { padding: 0.85rem 1rem; border-right: none; border-bottom: 1px solid var(--border); }
  .date-item:last-child { border-bottom: none; }
  .dates-row { flex-direction: column; }
  #hero { min-height: auto; }
  .hero-content { padding: 110px 1.25rem 40px; }
  .hero-badge { margin-bottom: 2rem; }
  .hero-title { font-size: 1.9rem; letter-spacing: -0.02em; margin-bottom: 1.5rem; }
  .hero-theme { margin-bottom: 1.5rem; font-size: 0.85rem; }
  .hero-location { font-size: 0.75rem; margin-bottom: 2rem; }
  .hero-stats { display: none; }
  #countdown { margin-bottom: 1.5rem; }
  .hero-organizers { font-size: 0.6rem; margin-top: 1.2rem; }
  .hero-stats { gap: 0.5rem; }
  .hero-stat-card { min-width: 80px; padding: 1rem; }
  .hero-stat-number { font-size: 1.8rem; }
  .countdown-item { min-width: 60px; padding: 0.6rem 0.3rem; }
  .countdown-number { font-size: 1.5rem; }
  .timeline::before { display: none; }
  .slot { flex-direction: column; gap: 0.25rem; }
  .slot::after { display: none; }
  .slot-time { text-align: left; min-width: auto; padding-top: 0; font-size: 0.72rem; }
  .slot-body { margin-left: 0; }
  .parallel-tracks { margin-left: 0; }
  .section { padding: 60px 0; }
  .committee-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .hero-cta { flex-direction: column; align-items: center; gap: 0.75rem; }
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }
  .speakers-mini-grid { grid-template-columns: 1fr 1fr; }
  .committee-grid { grid-template-columns: 1fr; }
  .topic-pills { grid-template-columns: 1fr; }
}

/* ══════════════════════════════════════════
   PRINT
   ══════════════════════════════════════════ */
@media print {
  #mainNav, #back-to-top, #mobile-cta, .hero-cta, .copy-iban, .hero-orb, .hero-mesh, .hero-grain, #scroll-progress { display: none !important; }
  #hero { min-height: auto; padding: 2rem 0; background: #fff; }
  body { background: #fff; color: #000; font-size: 11pt; }
  section { padding: 1rem 0; background: #fff !important; }
  a { color: #000; text-decoration: underline; }
  .gs-reveal { opacity: 1 !important; transform: none !important; }
  .section-tag { background: none; border: 1px solid #ccc; color: #333; }
  .text-gradient { -webkit-text-fill-color: #000; background: none; }
  * { color: #000 !important; }
}