/* ============================================
   TOKENS
   ============================================ */
:root{
  --bg: #090b10;
  --bg-elevated: #10131a;
  --bg-elevated-2: #151922;
  --line: rgba(255,255,255,0.08);
  --line-strong: rgba(255,255,255,0.14);

  --teal: #33d9c9;
  --teal-dim: #1c6e66;
  --teal-glow: rgba(51,217,201,0.35);

  --blue: #46619e;
  --blue-soft: #2b3a5c;

  --text: #edf0f5;
  --text-muted: #9aa2b3;
  --text-faint: #656d7d;

  --display: 'Sora', 'Inter', sans-serif;
  --body: 'Inter', sans-serif;
  --mono: 'IBM Plex Mono', monospace;

  --radius: 14px;
  --radius-sm: 8px;
  --wrap: 1160px;
}

*, *::before, *::after{ box-sizing: border-box; }

html{ scroll-behavior: smooth; }

@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; }
}

body{
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap{
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 28px;
}

h1, h2, h3, h4{
  font-family: var(--display);
  color: var(--text);
  margin: 0;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

p{ margin: 0; }

a{ color: inherit; text-decoration: none; }

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

::selection{ background: var(--teal); color: #06110f; }

:focus-visible{
  outline: 2px solid var(--teal);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ============================================
   EYEBROW / LABELS
   ============================================ */
.eyebrow{
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--teal);
  margin-bottom: 18px;
}
.eyebrow-dark{ color: var(--teal-dim); }
.eyebrow-dot{
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 3px var(--teal-glow);
  flex-shrink: 0;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--body);
  font-weight: 600;
  font-size: 15px;
  border-radius: 999px;
  padding: 14px 28px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, border-color 0.18s ease;
  white-space: nowrap;
}
.btn-primary{
  background: var(--teal);
  color: #05100e;
  box-shadow: 0 0 0 0 rgba(51,217,201,0);
}
.btn-primary:hover{
  transform: translateY(-1px);
  box-shadow: 0 8px 24px -6px var(--teal-glow);
}
.btn-small{ padding: 9px 18px; font-size: 13.5px; }
.btn-large{ padding: 16px 32px; font-size: 15.5px; }
.btn-full{ width: 100%; }

/* ============================================
   HEADER
   ============================================ */
.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(9,11,16,0.78);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 24px;
}
.logo{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}
.logo-mark{ color: var(--teal); display: inline-flex; }
.logo-word{
  font-family: var(--display);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.01em;
}
.logo-dot{ color: var(--teal); }

.main-nav{
  display: flex;
  gap: 32px;
  font-size: 14.5px;
  color: var(--text-muted);
}
.main-nav a:hover{ color: var(--text); }

.header-actions{
  display: flex;
  align-items: center;
  gap: 18px;
}

.lang-toggle{
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 6px 12px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-muted);
  cursor: pointer;
}
.lang-opt{ padding: 2px 3px; transition: color 0.15s ease; }
.lang-opt.is-active{ color: var(--teal); }
.lang-sep{ opacity: 0.4; }

/* ============================================
   HERO
   ============================================ */
.hero{
  position: relative;
  overflow: hidden;
  padding-top: 64px;
}
.hero-bg{
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 640px 480px at 82% 18%, rgba(51,217,201,0.14), transparent 60%),
    radial-gradient(ellipse 500px 400px at 10% 90%, rgba(70,97,158,0.16), transparent 60%);
  pointer-events: none;
}
.hero-inner{
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
  padding: 56px 28px 72px;
}
.hero-copy h1{
  font-size: clamp(34px, 4.6vw, 54px);
  font-weight: 700;
  max-width: 15ch;
  margin-bottom: 22px;
}
.hero-sub{
  color: var(--text-muted);
  font-size: 17px;
  max-width: 46ch;
  margin-bottom: 34px;
}
.hero-actions{ display: flex; flex-direction: column; align-items: flex-start; gap: 12px; margin-bottom: 44px; }
.hero-note{
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-faint);
  letter-spacing: 0.04em;
}

.hero-media{ position: relative; }
.hero-photo-frame{
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  aspect-ratio: 4 / 4.6;
  border: 1px solid var(--line-strong);
  background: var(--bg-elevated);
}
.hero-photo{
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: 60% 30%;
}
.hero-photo-fade{
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(9,11,16,0) 55%, rgba(9,11,16,0.85) 100%),
              linear-gradient(90deg, rgba(9,11,16,0.35) 0%, rgba(9,11,16,0) 22%);
  pointer-events: none;
}
.hero-media-tag{
  position: absolute;
  left: 20px;
  bottom: 20px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--text);
  background: rgba(9,11,16,0.55);
  border: 1px solid var(--line-strong);
  padding: 7px 12px;
  border-radius: 999px;
  backdrop-filter: blur(6px);
}
.rec-dot{
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--teal);
  animation: pulse 1.8s ease-in-out infinite;
}
@keyframes pulse{
  0%, 100%{ opacity: 1; box-shadow: 0 0 0 0 var(--teal-glow); }
  50%{ opacity: 0.55; box-shadow: 0 0 0 5px transparent; }
}

/* ---- signature element: waveform ---- */
.wave{
  display: flex;
  align-items: flex-end;
  gap: 5px;
  height: 34px;
}
.wave span{
  width: 4px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--teal), var(--teal-dim));
  animation: wavebar 1.4s ease-in-out infinite;
}
.wave span:nth-child(1){ height: 40%; animation-delay: -1.1s; }
.wave span:nth-child(2){ height: 70%; animation-delay: -0.9s; }
.wave span:nth-child(3){ height: 100%; animation-delay: -0.7s; }
.wave span:nth-child(4){ height: 55%; animation-delay: -0.5s; }
.wave span:nth-child(5){ height: 85%; animation-delay: -0.3s; }
.wave span:nth-child(6){ height: 45%; animation-delay: -1.3s; }
.wave span:nth-child(7){ height: 90%; animation-delay: -0.2s; }
.wave span:nth-child(8){ height: 60%; animation-delay: -0.8s; }
.wave span:nth-child(9){ height: 35%; animation-delay: -0.4s; }
.wave span:nth-child(10){ height: 75%; animation-delay: -1.0s; }
@keyframes wavebar{
  0%, 100%{ transform: scaleY(0.45); opacity: 0.55; }
  50%{ transform: scaleY(1); opacity: 1; }
}

/* ============================================
   SECTIONS (shared)
   ============================================ */
.section{ padding: 96px 0; }
.section-alt{ background: var(--bg-elevated); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head{ max-width: 640px; margin-bottom: 52px; }
.section-head h2{ font-size: clamp(26px, 3.2vw, 36px); font-weight: 700; }

/* ============================================
   CARDS (about)
   ============================================ */
.card-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.card{
  background: var(--bg-elevated-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.card:hover{ border-color: var(--line-strong); transform: translateY(-2px); }
.card-icon{
  color: var(--teal);
  width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(51,217,201,0.08);
  border-radius: 12px;
  margin-bottom: 20px;
}
.card h3{ font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.card p{ color: var(--text-muted); font-size: 14.5px; line-height: 1.65; }

/* ============================================
   TIMELINE (agenda)
   ============================================ */
.timeline{ list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.timeline-item{
  display: grid;
  grid-template-columns: 56px 1fr auto;
  gap: 24px;
  align-items: baseline;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}
.timeline-num{
  font-family: var(--mono);
  font-size: 14px;
  color: var(--teal);
  letter-spacing: 0.05em;
}
.timeline-body h4{ font-size: 17px; font-weight: 600; margin-bottom: 6px; }
.timeline-body p{ color: var(--text-muted); font-size: 14.5px; }
.timeline-time{ font-family: var(--mono); font-size: 12.5px; color: var(--text-faint); white-space: nowrap; }

/* ============================================
   SPEAKER
   ============================================ */
.speaker-inner{
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 56px;
  align-items: center;
}
.speaker-photo{
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  aspect-ratio: 1 / 1.05;
}
.speaker-photo img{ width: 100%; height: 100%; object-fit: cover; object-position: 55% 25%; }
.speaker-copy h2{ font-size: clamp(24px, 3vw, 32px); font-weight: 700; margin-bottom: 8px; }
.speaker-role{ color: var(--teal); font-size: 15px; font-weight: 600; margin-bottom: 18px; }
.speaker-bio{ color: var(--text-muted); font-size: 15.5px; line-height: 1.7; max-width: 52ch; margin-bottom: 26px; }
.speaker-quote{
  margin: 0;
  padding-left: 20px;
  border-left: 2px solid var(--teal-dim);
  font-family: var(--display);
  font-size: 18px;
  font-style: normal;
  color: var(--text);
}

/* ============================================
   REGISTRATION FORM
   ============================================ */
.reg-panel{
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
  background: var(--bg-elevated-2);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 56px;
}
.reg-copy h2{ font-size: clamp(24px, 3vw, 32px); font-weight: 700; margin-bottom: 16px; }
.reg-copy > p{ color: var(--text-muted); font-size: 15px; line-height: 1.7; margin-bottom: 26px; }
.reg-points{ list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.reg-points li{
  font-size: 14px;
  color: var(--text);
  padding-left: 22px;
  position: relative;
}
.reg-points li::before{
  content: '';
  position: absolute;
  left: 0; top: 7px;
  width: 8px; height: 8px;
  border-radius: 2px;
  background: var(--teal);
}

.reg-form{ display: flex; flex-direction: column; gap: 18px; }
.field{ display: flex; flex-direction: column; gap: 8px; }
.field label{
  font-size: 13px;
  font-family: var(--mono);
  color: var(--text-muted);
  letter-spacing: 0.03em;
}
.field input{
  background: var(--bg);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 13px 15px;
  color: var(--text);
  font-family: var(--body);
  font-size: 15px;
  transition: border-color 0.15s ease;
}
.field input:focus{ border-color: var(--teal); outline: none; }

.checkbox-field{
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
  padding: 4px 0 6px;
}
.checkbox-field input{
  position: absolute;
  opacity: 0;
  width: 20px; height: 20px;
  margin: 0;
  cursor: pointer;
}
.checkbox-box{
  flex-shrink: 0;
  width: 20px; height: 20px;
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  background: var(--bg);
  position: relative;
  margin-top: 1px;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.checkbox-field input:checked + .checkbox-box{
  background: var(--teal);
  border-color: var(--teal);
}
.checkbox-field input:checked + .checkbox-box::after{
  content: '';
  position: absolute;
  left: 6px; top: 2px;
  width: 5px; height: 10px;
  border: solid #05100e;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
.checkbox-field input:focus-visible + .checkbox-box{
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}
.checkbox-text{ font-size: 13.5px; color: var(--text-muted); line-height: 1.55; }

.form-status{
  font-size: 13.5px;
  font-family: var(--mono);
  color: var(--teal);
  min-height: 18px;
}

/* ============================================
   FINAL CTA BANNER
   ============================================ */
.cta-banner{
  padding: 88px 0 96px;
  text-align: center;
  background:
    radial-gradient(ellipse 700px 380px at 50% 0%, rgba(51,217,201,0.10), transparent 65%),
    var(--bg);
}
.cta-inner{ display: flex; flex-direction: column; align-items: center; gap: 26px; }
.cta-banner h2{ font-size: clamp(24px, 3.4vw, 34px); font-weight: 700; max-width: 20ch; }
.wave-small{ height: 24px; opacity: 0.7; }
.wave-small span{ width: 3px; }

/* ============================================
   FOOTER
   ============================================ */
.site-footer{
  border-top: 1px solid var(--line);
  padding: 36px 0;
}
.footer-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.logo-footer .logo-word{ font-size: 16px; }
.footer-copy{ color: var(--text-faint); font-size: 13px; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px){
  .main-nav{ display: none; }
  .hero-inner{ grid-template-columns: 1fr; padding-top: 40px; }
  .hero-media{ order: -1; max-width: 380px; margin: 0 auto; }
  .card-grid{ grid-template-columns: 1fr; }
  .speaker-inner{ grid-template-columns: 1fr; gap: 36px; }
  .speaker-photo{ max-width: 320px; aspect-ratio: 1/1; }
  .reg-panel{ grid-template-columns: 1fr; padding: 32px 24px; gap: 36px; }
  .timeline-item{ grid-template-columns: 40px 1fr; }
  .timeline-time{ grid-column: 2; margin-top: 4px; }
}

@media (max-width: 560px){
  .header-inner{ height: 66px; }
  .logo-word{ font-size: 17px; }
  .header-actions .btn-small{ display: none; }
  .hero-inner{ padding: 32px 20px 56px; }
  .section{ padding: 64px 0; }
  .wrap{ padding: 0 20px; }
}