/* ============================================================
   RECAP 2026 — Research Education Clinical Advancement Platform
   Global Virtual Medical Research Conference
   Stylesheet — luxury / academic / future-forward
   ============================================================ */

/* ---------- Design Tokens ---------- */
:root {
  /* Brand palette */
  --navy: #0B1F33;
  --navy-900: #071522;
  --navy-800: #0a1c2e;
  --navy-700: #0f2c45;
  --teal: #0E7490;
  --cyan: #22D3EE;
  --gold: #EAB308;
  --bg: #F8FAFC;
  --ink: #071522;

  /* Derived neutrals */
  --slate-700: #334155;
  --slate-500: #64748B;
  --slate-400: #94A3B8;
  --slate-300: #CBD5E1;
  --slate-200: #E2E8F0;
  --slate-100: #F1F5F9;
  --white: #ffffff;

  /* Gradients */
  --grad-aurora: linear-gradient(135deg, #0E7490 0%, #22D3EE 100%);
  --grad-deep: linear-gradient(160deg, #0B1F33 0%, #0f2c45 55%, #0E7490 140%);
  --grad-gold: linear-gradient(120deg, #EAB308 0%, #fbbf24 100%);
  --grad-text: linear-gradient(120deg, #22D3EE 0%, #67e8f9 50%, #EAB308 130%);

  /* Glass */
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-bg-strong: rgba(255, 255, 255, 0.14);
  --glass-border: rgba(255, 255, 255, 0.18);
  --glass-light-bg: rgba(255, 255, 255, 0.72);
  --glass-light-border: rgba(11, 31, 51, 0.08);

  /* Typography */
  --font-display: "Playfair Display", Georgia, "Times New Roman", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Spacing scale */
  --space-section: clamp(5rem, 10vw, 9rem);
  --container: 1240px;
  --container-narrow: 920px;

  /* Radii */
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-xl: 32px;
  --r-pill: 999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(7, 21, 34, 0.06);
  --shadow-md: 0 14px 40px rgba(7, 21, 34, 0.10);
  --shadow-lg: 0 30px 80px rgba(7, 21, 34, 0.18);
  --shadow-cyan: 0 18px 50px rgba(34, 211, 238, 0.28);
  --shadow-gold: 0 14px 40px rgba(234, 179, 8, 0.30);

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur: 0.5s;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@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;
  }
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  font-size: 1.0625rem;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

::selection { background: var(--cyan); color: var(--navy-900); }

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--navy);
}
.h-display { font-size: clamp(2.6rem, 7vw, 5.4rem); }
h2 { font-size: clamp(2rem, 4.5vw, 3.25rem); }
h3 { font-size: clamp(1.35rem, 2.4vw, 1.75rem); }
p { color: var(--slate-700); }

.eyebrow {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--teal);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}
.eyebrow::before {
  content: "";
  width: 28px; height: 1.5px;
  background: var(--grad-aurora);
  display: inline-block;
}
.eyebrow.center::after {
  content: "";
  width: 28px; height: 1.5px;
  background: var(--grad-aurora);
  display: inline-block;
}
.eyebrow.on-dark { color: var(--cyan); }

.gradient-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}
.container.narrow { max-width: var(--container-narrow); }
.section { padding-block: var(--space-section); position: relative; }
.section-head { max-width: 720px; margin-bottom: 3.5rem; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head .eyebrow { margin-bottom: 1.1rem; }
.section-head p { margin-top: 1rem; font-size: 1.125rem; }

.lede { font-size: 1.2rem; color: var(--slate-700); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.95rem 1.7rem;
  border-radius: var(--r-pill);
  font-weight: 600;
  font-size: 0.98rem;
  letter-spacing: 0.01em;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
              background var(--dur) var(--ease), color var(--dur) var(--ease);
  will-change: transform;
}
.btn svg { width: 18px; height: 18px; transition: transform var(--dur) var(--ease); }
.btn:hover svg { transform: translateX(4px); }

.btn-primary {
  background: var(--grad-aurora);
  color: var(--white);
  box-shadow: var(--shadow-cyan);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 24px 60px rgba(34, 211, 238, 0.42); }

.btn-gold {
  background: var(--grad-gold);
  color: var(--navy-900);
  box-shadow: var(--shadow-gold);
}
.btn-gold:hover { transform: translateY(-3px); box-shadow: 0 22px 56px rgba(234, 179, 8, 0.45); }

.btn-ghost {
  background: var(--glass-bg);
  color: var(--white);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.btn-ghost:hover { background: var(--glass-bg-strong); transform: translateY(-3px); }

.btn-outline {
  background: transparent;
  color: var(--teal);
  border: 1.5px solid var(--slate-300);
}
.btn-outline:hover { border-color: var(--teal); color: var(--navy); transform: translateY(-3px); box-shadow: var(--shadow-md); }

.btn-lg { padding: 1.1rem 2.1rem; font-size: 1.05rem; }

/* ============================================================
   HEADER / NAV
   ============================================================ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
              backdrop-filter var(--dur) var(--ease), padding var(--dur) var(--ease);
  padding-block: 1.1rem;
}
.site-header.scrolled {
  background: rgba(248, 250, 252, 0.82);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  box-shadow: 0 1px 0 rgba(11, 31, 51, 0.07), 0 10px 40px rgba(7, 21, 34, 0.06);
  padding-block: 0.65rem;
}
.nav {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.brand { display: flex; align-items: center; gap: 0.75rem; flex-shrink: 0; }
.brand img { height: 46px; width: auto; transition: height var(--dur) var(--ease); }
.brand .brand-logo-dark { display: none; }
.scrolled .brand img { height: 40px; }
.site-header.scrolled .brand-logo-light { display: none; }
.site-header.scrolled .brand-logo-dark { display: block; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.nav-links a {
  position: relative;
  padding: 0.5rem 0.85rem;
  font-size: 0.92rem;
  font-weight: 500;
  color: rgba(255,255,255,0.86);
  border-radius: var(--r-sm);
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.scrolled .nav-links a { color: var(--slate-700); }
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0.85rem; right: 0.85rem; bottom: 0.25rem;
  height: 2px;
  background: var(--grad-aurora);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur) var(--ease);
}
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }
.nav-links a:hover, .nav-links a.active { color: var(--cyan); }
.scrolled .nav-links a:hover, .scrolled .nav-links a.active { color: var(--teal); }

.nav-cta { display: flex; align-items: center; gap: 0.75rem; flex-shrink: 0; }
.nav-cta .btn { padding: 0.65rem 1.25rem; font-size: 0.88rem; }

/* Mobile menu hidden by default (desktop); shown only at <=860px breakpoint */
.mobile-menu { display: none; }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border-radius: var(--r-sm);
  position: relative;
}
.nav-toggle span {
  position: absolute;
  left: 11px; right: 11px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease), background var(--dur) var(--ease);
}
.scrolled .nav-toggle span { background: var(--navy); }
.nav-toggle span:nth-child(1) { top: 15px; }
.nav-toggle span:nth-child(2) { top: 21px; }
.nav-toggle span:nth-child(3) { top: 27px; }
.nav-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--grad-deep);
}
.hero-video {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  z-index: 0;
  opacity: 0.45;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(1200px 600px at 75% 15%, rgba(34,211,238,0.18), transparent 60%),
    radial-gradient(900px 500px at 10% 90%, rgba(14,116,144,0.30), transparent 55%),
    linear-gradient(180deg, rgba(7,21,34,0.55) 0%, rgba(7,21,34,0.75) 60%, rgba(7,21,34,0.92) 100%);
}
.hero-grid-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(rgba(34,211,238,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34,211,238,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(circle at 70% 40%, #000 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(circle at 70% 40%, #000 0%, transparent 70%);
}
.hero .container { position: relative; z-index: 3; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.5rem 1.1rem;
  border-radius: var(--r-pill);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: rgba(255,255,255,0.92);
  margin-bottom: 2rem;
}
.hero-badge .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 0 rgba(34,211,238,0.7);
  animation: pulse 2.4s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(34,211,238,0.6); }
  70% { box-shadow: 0 0 0 12px rgba(34,211,238,0); }
  100% { box-shadow: 0 0 0 0 rgba(34,211,238,0); }
}

.hero h1 {
  color: var(--white);
  font-size: clamp(3rem, 9vw, 7rem);
  line-height: 0.98;
  margin-bottom: 0.5rem;
}
.hero h1 .line2 {
  display: block;
  font-size: clamp(1.05rem, 2.4vw, 1.75rem);
  font-family: var(--font-body);
  font-weight: 400;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-top: 1.2rem;
}
.hero-tagline {
  font-family: var(--font-body);
  font-size: clamp(1.05rem, 2vw, 1.4rem);
  font-weight: 300;
  color: rgba(255,255,255,0.78);
  margin: 1.5rem 0 1rem;
  letter-spacing: 0.02em;
}
.hero-sub {
  max-width: 640px;
  font-size: 1.12rem;
  color: rgba(255,255,255,0.72);
  margin-bottom: 2.5rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; }

/* Hero stats */
.hero-stats {
  margin-top: 4.5rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--glass-border);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-lg);
  overflow: hidden;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.hero-stat {
  background: rgba(11,31,51,0.35);
  padding: 1.75rem 1.5rem;
  text-align: center;
}
.hero-stat .num {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4vw, 2.9rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1;
  display: block;
}
.hero-stat .num .plus { color: var(--cyan); }
.hero-stat .label {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.62);
  margin-top: 0.6rem;
  display: block;
}

.scroll-cue {
  position: absolute;
  bottom: 2rem; left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  color: rgba(255,255,255,0.5);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.scroll-cue .mouse {
  width: 24px; height: 38px;
  border: 1.5px solid rgba(255,255,255,0.4);
  border-radius: 14px;
  position: relative;
}
.scroll-cue .mouse::after {
  content: "";
  position: absolute;
  top: 7px; left: 50%;
  transform: translateX(-50%);
  width: 4px; height: 8px;
  background: var(--cyan);
  border-radius: 2px;
  animation: scrollwheel 1.8s infinite;
}
@keyframes scrollwheel {
  0% { opacity: 0; transform: translate(-50%, 0); }
  40% { opacity: 1; }
  80% { opacity: 0; transform: translate(-50%, 12px); }
  100% { opacity: 0; }
}

/* ---------- Floating gradient orbs ---------- */
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.5;
  z-index: 2;
  pointer-events: none;
}
.orb-1 { width: 380px; height: 380px; background: radial-gradient(circle, rgba(34,211,238,0.5), transparent 70%); top: 8%; right: -80px; animation: float1 16s ease-in-out infinite; }
.orb-2 { width: 300px; height: 300px; background: radial-gradient(circle, rgba(14,116,144,0.55), transparent 70%); bottom: 12%; left: -60px; animation: float2 20s ease-in-out infinite; }
.orb-3 { width: 220px; height: 220px; background: radial-gradient(circle, rgba(234,179,8,0.28), transparent 70%); top: 40%; left: 40%; animation: float3 24s ease-in-out infinite; }
@keyframes float1 { 0%,100% { transform: translate(0,0); } 50% { transform: translate(-40px, 40px); } }
@keyframes float2 { 0%,100% { transform: translate(0,0); } 50% { transform: translate(50px, -30px); } }
@keyframes float3 { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(-30px,-20px) scale(1.1); } }

/* ============================================================
   REVEAL ANIMATIONS
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }
.reveal[data-delay="5"] { transition-delay: 0.40s; }

/* ============================================================
   GENERIC SECTIONS / CARDS
   ============================================================ */
.bg-light { background: var(--bg); }
.bg-soft { background: linear-gradient(180deg, #ffffff 0%, var(--slate-100) 100%); }
.bg-navy { background: var(--grad-deep); color: rgba(255,255,255,0.8); position: relative; overflow: hidden; }
.bg-navy h2, .bg-navy h3 { color: var(--white); }
.bg-navy p { color: rgba(255,255,255,0.7); }

.glass-card {
  background: var(--glass-light-bg);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border: 1px solid var(--glass-light-border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-md);
}
.glass-card.on-dark {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  box-shadow: none;
}

/* Two-column intro */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
}
.split.text-first { grid-template-columns: 1.05fr 0.95fr; }

.stat-frame {
  position: relative;
  border-radius: var(--r-xl);
  overflow: hidden;
  background: var(--grad-deep);
  padding: 3rem 2.5rem;
  color: var(--white);
  box-shadow: var(--shadow-lg);
}
.stat-frame .orb { opacity: 0.7; }
.stat-frame-grid {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1fr 1fr; gap: 2rem;
}
.stat-frame .num {
  font-family: var(--font-display);
  font-size: 2.6rem; font-weight: 800; color: var(--white);
}
.stat-frame .num .plus { color: var(--cyan); }
.stat-frame .label { font-size: 0.82rem; color: rgba(255,255,255,0.62); letter-spacing: 0.08em; text-transform: uppercase; }

/* ---------- Why attend / feature grid ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.feature-card {
  padding: 2.25rem 2rem;
  border-radius: var(--r-lg);
  background: var(--white);
  border: 1px solid var(--slate-200);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute; inset: 0 0 auto 0; height: 3px;
  background: var(--grad-aurora);
  transform: scaleX(0); transform-origin: left;
  transition: transform var(--dur) var(--ease);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon {
  width: 54px; height: 54px;
  border-radius: var(--r-md);
  display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(14,116,144,0.12), rgba(34,211,238,0.12));
  color: var(--teal);
  margin-bottom: 1.4rem;
}
.feature-icon svg { width: 26px; height: 26px; }
.feature-card h3 { font-size: 1.25rem; margin-bottom: 0.6rem; }
.feature-card p { font-size: 0.98rem; }

/* ---------- Research tracks ---------- */
.tracks {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.track-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.7rem 1.2rem;
  border-radius: var(--r-pill);
  background: var(--white);
  border: 1px solid var(--slate-200);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--slate-700);
  transition: all var(--dur) var(--ease);
}
.track-chip .tdot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--grad-aurora);
}
.track-chip:hover {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.track-chip:hover .tdot { background: var(--gold); }

/* ---------- Process / steps ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.25rem;
  counter-reset: step;
}
.step {
  position: relative;
  padding: 2rem 1.5rem;
  border-radius: var(--r-lg);
  background: var(--white);
  border: 1px solid var(--slate-200);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.step:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.step .step-num {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 800;
  background: var(--grad-text);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin-bottom: 0.8rem;
}
.step h3 { font-size: 1.1rem; margin-bottom: 0.4rem; }
.step p { font-size: 0.9rem; }

/* ---------- Format cards ---------- */
.format-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }
.format-card {
  padding: 1.75rem;
  border-radius: var(--r-lg);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  text-align: center;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}
.format-card:hover { transform: translateY(-6px); background: var(--glass-bg-strong); }
.format-card .feature-icon { margin-inline: auto; background: rgba(34,211,238,0.14); color: var(--cyan); }
.format-card h3 { color: var(--white); font-size: 1.15rem; }

/* ---------- Timeline / Important dates ---------- */
.timeline { position: relative; max-width: 760px; margin-inline: auto; }
.timeline::before {
  content: "";
  position: absolute; left: 26px; top: 8px; bottom: 8px;
  width: 2px; background: linear-gradient(180deg, var(--cyan), var(--teal), var(--gold));
}
.tl-item {
  position: relative;
  padding: 0 0 2.25rem 5rem;
}
.tl-item:last-child { padding-bottom: 0; }
.tl-dot {
  position: absolute; left: 16px; top: 2px;
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--white);
  border: 3px solid var(--cyan);
  box-shadow: 0 0 0 5px rgba(34,211,238,0.15);
}
.tl-item.gold .tl-dot { border-color: var(--gold); box-shadow: 0 0 0 5px rgba(234,179,8,0.15); }
.tl-date { font-size: 0.82rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--teal); }
.tl-item.gold .tl-date { color: var(--gold); }
.tl-title { font-family: var(--font-display); font-size: 1.3rem; font-weight: 700; color: var(--navy); margin-top: 0.2rem; }
.bg-navy .tl-title { color: var(--white); }
.bg-navy .tl-dot { background: var(--navy-900); }

/* ---------- Speakers carousel ---------- */
.carousel { position: relative; }
.carousel-track {
  display: flex;
  gap: 1.5rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 1.5rem;
  scrollbar-width: none;
}
.carousel-track::-webkit-scrollbar { display: none; }
.speaker-card {
  flex: 0 0 300px;
  scroll-snap-align: start;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--slate-200);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.speaker-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.speaker-photo {
  position: relative;
  aspect-ratio: 4/4.4;
  overflow: hidden;
  background: var(--grad-deep);
}
.speaker-photo img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s var(--ease); }
.speaker-card:hover .speaker-photo img { transform: scale(1.06); }
.speaker-photo::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(7,21,34,0.85) 100%);
}
.speaker-flag {
  position: absolute; top: 1rem; left: 1rem; z-index: 2;
  padding: 0.35rem 0.8rem;
  border-radius: var(--r-pill);
  background: var(--glass-bg-strong);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  font-size: 0.74rem; font-weight: 600; color: var(--white);
  letter-spacing: 0.05em;
}
.speaker-info { padding: 1.5rem; }
.speaker-info h3 { font-size: 1.2rem; margin-bottom: 0.25rem; }
.speaker-info .inst { font-size: 0.9rem; color: var(--teal); font-weight: 500; }
.speaker-info .role { font-size: 0.85rem; color: var(--slate-500); margin-top: 0.4rem; }
.carousel-controls { display: flex; gap: 0.75rem; margin-top: 0.5rem; }
.carousel-btn {
  width: 50px; height: 50px;
  border-radius: 50%;
  border: 1.5px solid var(--slate-300);
  display: grid; place-items: center;
  color: var(--navy);
  transition: all var(--dur) var(--ease);
}
.carousel-btn:hover { background: var(--navy); color: var(--white); border-color: var(--navy); transform: scale(1.05); }
.carousel-btn svg { width: 20px; height: 20px; }

/* ---------- Program / agenda ---------- */
.program-days { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.day-card {
  border-radius: var(--r-xl);
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--slate-200);
  box-shadow: var(--shadow-md);
}
.day-head {
  background: var(--grad-deep);
  padding: 2rem 2.25rem;
  position: relative;
  overflow: hidden;
}
.day-head .day-label { font-size: 0.8rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--cyan); }
.day-head h3 { color: var(--white); font-size: 1.9rem; margin-top: 0.3rem; }
.day-head .day-sub { color: rgba(255,255,255,0.65); font-size: 0.92rem; margin-top: 0.3rem; }
.agenda-list { padding: 1.25rem 2.25rem 2rem; }
.agenda-item {
  display: flex; gap: 1.25rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--slate-200);
}
.agenda-item:last-child { border-bottom: none; }
.agenda-time {
  flex: 0 0 84px;
  font-weight: 700; font-size: 0.92rem; color: var(--teal);
  font-variant-numeric: tabular-nums;
}
.agenda-body h4 { font-family: var(--font-body); font-size: 1.02rem; font-weight: 600; color: var(--navy); }
.agenda-body p { font-size: 0.88rem; margin-top: 0.15rem; }
.agenda-tag {
  display: inline-block; margin-top: 0.5rem;
  font-size: 0.72rem; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase;
  color: var(--teal); background: rgba(14,116,144,0.1);
  padding: 0.2rem 0.65rem; border-radius: var(--r-pill);
}
.agenda-tag.gold { color: var(--gold); background: rgba(234,179,8,0.12); }

/* ---------- Awards ---------- */
.awards-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.award-card {
  position: relative;
  padding: 2.5rem 2rem;
  border-radius: var(--r-lg);
  background: var(--white);
  border: 1px solid var(--slate-200);
  text-align: center;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  overflow: hidden;
}
.award-card::after {
  content: "";
  position: absolute; inset: -40% 50% auto -40%; height: 200px;
  background: radial-gradient(circle, rgba(234,179,8,0.14), transparent 70%);
  opacity: 0; transition: opacity var(--dur) var(--ease);
}
.award-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.award-card:hover::after { opacity: 1; }
.award-medal {
  width: 72px; height: 72px;
  margin: 0 auto 1.4rem;
  border-radius: 50%;
  display: grid; place-items: center;
  background: var(--grad-gold);
  color: var(--navy-900);
  box-shadow: var(--shadow-gold);
  position: relative; z-index: 2;
}
.award-medal svg { width: 34px; height: 34px; }
.award-card h3 { font-size: 1.25rem; position: relative; z-index: 2; }
.award-card p { font-size: 0.92rem; margin-top: 0.5rem; position: relative; z-index: 2; }

/* ---------- Publications ---------- */
.pub-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.pub-card {
  display: flex; gap: 1.5rem;
  padding: 2rem;
  border-radius: var(--r-lg);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}
.pub-card:hover { transform: translateY(-5px); background: var(--glass-bg-strong); }
.pub-icon {
  flex-shrink: 0;
  width: 56px; height: 56px; border-radius: var(--r-md);
  display: grid; place-items: center;
  background: rgba(34,211,238,0.14); color: var(--cyan);
}
.pub-icon svg { width: 28px; height: 28px; }
.pub-card h3 { color: var(--white); font-size: 1.2rem; margin-bottom: 0.4rem; }

/* ---------- Sponsors ---------- */
.sponsor-tier { margin-bottom: 3rem; }
.sponsor-tier:last-child { margin-bottom: 0; }
.tier-label {
  text-align: center;
  font-size: 0.82rem; font-weight: 700; letter-spacing: 0.2em; text-transform: uppercase;
  margin-bottom: 1.5rem;
  display: flex; align-items: center; justify-content: center; gap: 1rem;
}
.tier-label::before, .tier-label::after { content: ""; height: 1px; width: 60px; background: var(--slate-300); }
.tier-label.platinum { color: var(--slate-500); }
.tier-label.gold { color: var(--gold); }
.tier-label.silver { color: var(--slate-400); }
.sponsor-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 1.25rem; }
.sponsor-logo {
  display: grid; place-items: center;
  padding: 1.5rem 2.5rem;
  min-width: 200px;
  border-radius: var(--r-md);
  background: var(--white);
  border: 1px solid var(--slate-200);
  font-family: var(--font-display);
  font-weight: 700; font-size: 1.2rem; color: var(--slate-400);
  transition: all var(--dur) var(--ease);
}
.sponsor-logo.platinum { min-width: 260px; padding: 2rem 3rem; font-size: 1.5rem; }
.sponsor-logo:hover { color: var(--navy); border-color: var(--teal); transform: translateY(-4px); box-shadow: var(--shadow-md); }
.become-sponsor { text-align: center; margin-top: 3rem; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 820px; margin-inline: auto; }
.faq-item {
  border-bottom: 1px solid var(--slate-200);
}
.faq-q {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between; gap: 1.5rem;
  padding: 1.6rem 0;
  text-align: left;
  font-family: var(--font-display);
  font-size: 1.18rem; font-weight: 600; color: var(--navy);
  transition: color var(--dur) var(--ease);
}
.faq-q:hover { color: var(--teal); }
.faq-icon {
  flex-shrink: 0;
  width: 34px; height: 34px; border-radius: 50%;
  border: 1.5px solid var(--slate-300);
  display: grid; place-items: center;
  position: relative;
  transition: all var(--dur) var(--ease);
}
.faq-icon::before, .faq-icon::after {
  content: ""; position: absolute;
  background: var(--teal);
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}
.faq-icon::before { width: 14px; height: 2px; }
.faq-icon::after { width: 2px; height: 14px; }
.faq-item.open .faq-icon { background: var(--navy); border-color: var(--navy); }
.faq-item.open .faq-icon::before, .faq-item.open .faq-icon::after { background: var(--white); }
.faq-item.open .faq-icon::after { transform: rotate(90deg) scaleX(0); }
.faq-a {
  max-height: 0; overflow: hidden;
  transition: max-height 0.5s var(--ease), padding 0.5s var(--ease);
}
.faq-a-inner { padding-bottom: 1.6rem; }
.faq-a p { font-size: 1rem; }
.faq-item.open .faq-a { max-height: 360px; }

/* ---------- Forms ---------- */
.form-card {
  background: var(--white);
  border-radius: var(--r-xl);
  border: 1px solid var(--slate-200);
  box-shadow: var(--shadow-lg);
  padding: clamp(2rem, 5vw, 3.5rem);
}
.form-card-title { font-size: 1.4rem; margin-bottom: 1.75rem; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.field { display: flex; flex-direction: column; gap: 0.5rem; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 0.88rem; font-weight: 600; color: var(--navy); letter-spacing: 0.01em; }
.field label .req { color: var(--teal); }
.field input, .field select, .field textarea {
  font-family: inherit; font-size: 1rem;
  padding: 0.9rem 1.1rem;
  border: 1.5px solid var(--slate-200);
  border-radius: var(--r-sm);
  background: var(--slate-100);
  color: var(--ink);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--cyan);
  background: var(--white);
  box-shadow: 0 0 0 4px rgba(34,211,238,0.12);
}
.field .hint { font-size: 0.8rem; color: var(--slate-500); }
.form-note {
  margin-top: 1.5rem; padding: 1rem 1.25rem;
  border-radius: var(--r-sm);
  background: rgba(14,116,144,0.07);
  border: 1px solid rgba(14,116,144,0.15);
  font-size: 0.88rem; color: var(--slate-700);
  display: flex; gap: 0.75rem; align-items: flex-start;
}
.form-note svg { flex-shrink: 0; width: 20px; height: 20px; color: var(--teal); margin-top: 1px; }
.form-success {
  display: none;
  margin-top: 1.5rem; padding: 1.1rem 1.25rem;
  border-radius: var(--r-sm);
  background: rgba(16,185,129,0.1);
  border: 1px solid rgba(16,185,129,0.3);
  color: #065f46; font-weight: 500; font-size: 0.95rem;
}
.form-success.show { display: block; animation: fadeUp 0.5s var(--ease); }
@keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

/* ---------- Registration pricing ---------- */
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; align-items: stretch; }
.price-card {
  position: relative;
  padding: 2.5rem 2rem;
  border-radius: var(--r-xl);
  background: var(--white);
  border: 1px solid var(--slate-200);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  display: flex; flex-direction: column;
}
.price-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.price-card.featured {
  background: var(--grad-deep);
  border-color: transparent;
  box-shadow: var(--shadow-lg);
  transform: scale(1.03);
}
.price-card.featured:hover { transform: scale(1.03) translateY(-8px); }
.price-badge {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  padding: 0.4rem 1.1rem; border-radius: var(--r-pill);
  background: var(--grad-gold); color: var(--navy-900);
  font-size: 0.74rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  box-shadow: var(--shadow-gold);
}
.price-tier { font-size: 0.82rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--teal); }
.price-card.featured .price-tier { color: var(--cyan); }
.price-amount { font-family: var(--font-display); font-size: 3rem; font-weight: 800; color: var(--navy); margin: 0.6rem 0; line-height: 1; }
.price-card.featured .price-amount { color: var(--white); }
.price-amount .cur { font-size: 1.4rem; vertical-align: super; }
.price-amount .per { font-size: 0.95rem; font-family: var(--font-body); font-weight: 400; color: var(--slate-500); }
.price-card.featured .price-amount .per { color: rgba(255,255,255,0.6); }
.price-features { margin: 1.5rem 0 2rem; display: flex; flex-direction: column; gap: 0.85rem; flex-grow: 1; }
.price-features li { display: flex; gap: 0.7rem; font-size: 0.95rem; color: var(--slate-700); }
.price-card.featured .price-features li { color: rgba(255,255,255,0.82); }
.price-features svg { flex-shrink: 0; width: 20px; height: 20px; color: var(--teal); margin-top: 1px; }
.price-card.featured .price-features svg { color: var(--cyan); }
.price-card .btn { width: 100%; justify-content: center; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 3rem; align-items: start; }
.contact-info { display: flex; flex-direction: column; gap: 1.5rem; }
.contact-item { display: flex; gap: 1.1rem; align-items: flex-start; }
.contact-item .ci-icon {
  flex-shrink: 0; width: 52px; height: 52px; border-radius: var(--r-md);
  display: grid; place-items: center;
  background: linear-gradient(135deg, rgba(14,116,144,0.12), rgba(34,211,238,0.12));
  color: var(--teal);
}
.contact-item .ci-icon svg { width: 24px; height: 24px; }
.contact-item h4 { font-family: var(--font-body); font-size: 0.82rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--slate-500); font-weight: 600; }
.contact-item a, .contact-item p { font-size: 1.05rem; color: var(--navy); font-weight: 500; margin-top: 0.2rem; }
.contact-item a:hover { color: var(--teal); }

/* ============================================================
   CTA BANNER
   ============================================================ */
.cta-banner { position: relative; overflow: hidden; }
.cta-inner {
  position: relative; z-index: 2;
  text-align: center; max-width: 720px; margin-inline: auto;
}
.cta-inner h2 { color: var(--white); margin-bottom: 1rem; }
.cta-inner p { color: rgba(255,255,255,0.72); font-size: 1.15rem; margin-bottom: 2rem; }
.cta-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--navy-900);
  color: rgba(255,255,255,0.6);
  padding-block: 4.5rem 2rem;
  position: relative;
  overflow: hidden;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}
.footer-brand img { height: 52px; margin-bottom: 1.25rem; }
.footer-brand p { color: rgba(255,255,255,0.55); font-size: 0.95rem; max-width: 320px; }
.footer-col h4 {
  font-family: var(--font-body);
  font-size: 0.8rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--cyan); margin-bottom: 1.2rem; font-weight: 600;
}
.footer-col a {
  display: block; padding: 0.4rem 0;
  font-size: 0.95rem; color: rgba(255,255,255,0.6);
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.footer-col a:hover { color: var(--cyan); transform: translateX(4px); }
.footer-social { display: flex; gap: 0.75rem; margin-top: 1.5rem; }
.footer-social a {
  width: 42px; height: 42px; border-radius: 50%;
  display: grid; place-items: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.7);
  transition: all var(--dur) var(--ease);
}
.footer-social a:hover { background: var(--grad-aurora); color: var(--white); border-color: transparent; transform: translateY(-3px); }
.footer-social svg { width: 19px; height: 19px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 2rem;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap;
  font-size: 0.85rem; color: rgba(255,255,255,0.45);
}
.footer-bottom a:hover { color: var(--cyan); }

/* ============================================================
   PAGE HEADER (interior pages)
   ============================================================ */
.page-hero {
  position: relative;
  padding-top: clamp(9rem, 16vw, 12rem);
  padding-bottom: clamp(3.5rem, 7vw, 5.5rem);
  background: var(--grad-deep);
  overflow: hidden;
}
.page-hero .container { position: relative; z-index: 3; }
.page-hero .breadcrumb { font-size: 0.85rem; color: rgba(255,255,255,0.5); margin-bottom: 1.25rem; }
.page-hero .breadcrumb a:hover { color: var(--cyan); }
.page-hero h1 { color: var(--white); font-size: clamp(2.4rem, 6vw, 4.2rem); }
.page-hero p { color: rgba(255,255,255,0.72); font-size: 1.2rem; max-width: 620px; margin-top: 1.25rem; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .format-grid { grid-template-columns: repeat(2, 1fr); }
  .awards-grid { grid-template-columns: repeat(2, 1fr); }
  .program-days { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 460px; margin-inline: auto; }
  .price-card.featured { transform: none; }
  .price-card.featured:hover { transform: translateY(-8px); }
}

@media (max-width: 860px) {
  .nav-links, .nav-cta .btn-program { display: none; }
  .nav-toggle { display: block; }
  .mobile-menu {
    position: fixed; inset: 0;
    z-index: 999;
    background: var(--grad-deep);
    display: flex; flex-direction: column;
    justify-content: center;
    padding: 2rem clamp(1.5rem, 6vw, 3rem);
    transform: translateX(100%);
    transition: transform 0.5s var(--ease);
  }
  .mobile-menu.open { transform: translateX(0); }
  .mobile-menu a {
    font-family: var(--font-display);
    font-size: 1.6rem; font-weight: 600;
    color: var(--white);
    padding: 0.7rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    transition: color var(--dur) var(--ease), padding var(--dur) var(--ease);
  }
  .mobile-menu a:hover { color: var(--cyan); padding-left: 0.5rem; }
  .mobile-menu .btn { margin-top: 1.5rem; justify-content: center; }
  .split { grid-template-columns: 1fr; }
  .split.text-first { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 2rem; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .pub-grid { grid-template-columns: 1fr; }
  .stat-frame-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px) {
  .feature-grid, .steps, .format-grid, .awards-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .nav-cta .btn-register { padding: 0.6rem 1rem; font-size: 0.82rem; }
  .tl-item { padding-left: 4rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* Focus visibility for accessibility */
:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}
.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 2000;
  background: var(--navy); color: var(--white);
  padding: 0.8rem 1.5rem; border-radius: 0 0 var(--r-sm) 0;
}
.skip-link:focus { left: 0; }