/* ============================================
   CONTEXT — Elevate your AI Career
   Aesthetic: Dark tech-forward, conference-grade
   Brand: ElevTalk #1964c0 (blue) + SLAP #008e72 (teal)
   Fonts: Syne (display) + Noto Sans KR (body)
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=Noto+Sans+KR:wght@300;400;500;700&display=swap');

:root {
  --bg: #0a0a0f;
  --bg-card: #111118;
  --bg-card-hover: #16161f;
  --surface: #1a1a24;
  --text: #e8e8ed;
  --text-muted: #6b6b7b;
  --text-dim: #3e3e4e;
  --elev: #1964c0;
  --slap: #00c9a7;
  --accent: #4d8fdc;
  --accent-glow: rgba(77, 143, 220, 0.4);
  --gradient: linear-gradient(135deg, #1964c0, #00c9a7);
  --gradient-text: linear-gradient(135deg, #4d8fdc 0%, #00c9a7 50%, #1964c0 100%);
  --gradient-glow: linear-gradient(135deg, rgba(25,100,192,0.15), rgba(0,201,167,0.15));
  --border: rgba(255,255,255,0.06);
  --border-hover: rgba(255,255,255,0.12);
  --font-display: 'Syne', sans-serif;
  --font-body: 'Noto Sans KR', sans-serif;
  --max-w: 1200px;
  --gutter: clamp(1.5rem, 5vw, 4rem);
}

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

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

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ---- NAV ---- */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem var(--gutter);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.4s, backdrop-filter 0.4s, box-shadow 0.4s;
}

.nav.scrolled {
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: 0 1px 0 var(--border);
}

.nav__logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.03em;
  color: var(--text);
  text-decoration: none;
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.5rem;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 100px;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s;
}

.nav__cta:hover {
  background: rgba(255,255,255,0.14);
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}

/* ---- HERO ---- */

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 8rem var(--gutter) 4rem;
  position: relative;
  overflow: hidden;
}

/* Particle canvas */
.hero__particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  display: block;
}

/* Animated mesh gradient blobs */
.hero__mesh {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero__mesh-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  will-change: transform;
}

.hero__mesh-orb--1 {
  width: 60vw;
  height: 60vw;
  max-width: 800px;
  max-height: 800px;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(25,100,192,0.3) 0%, transparent 70%);
  animation: orbFloat1 20s ease-in-out infinite;
}

.hero__mesh-orb--2 {
  width: 40vw;
  height: 40vw;
  max-width: 600px;
  max-height: 600px;
  bottom: -15%;
  right: -10%;
  background: radial-gradient(circle, rgba(0,201,167,0.25) 0%, transparent 70%);
  animation: orbFloat2 25s ease-in-out infinite;
}

.hero__mesh-orb--3 {
  width: 30vw;
  height: 30vw;
  max-width: 400px;
  max-height: 400px;
  top: 50%;
  left: -5%;
  background: radial-gradient(circle, rgba(77,143,220,0.2) 0%, transparent 70%);
  animation: orbFloat3 18s ease-in-out infinite;
}

/* Grain overlay */
.hero__grain {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.06;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* Grid lines background */
.hero__grid {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 70%);
}

/* Hero content */
.hero__overline,
.hero__title,
.hero__subtitle,
.hero__meta,
.hero__cta,
.hero .cta-magnetic {
  position: relative;
  z-index: 2;
}

.hero__overline {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--slap);
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 0.2s;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 10vw, 9rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.9;
  margin-bottom: 1.5rem;
  background: var(--gradient-text);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: fadeUp 0.8s ease forwards 0.4s, gradientShift 8s ease-in-out infinite;
  opacity: 0;
  white-space: nowrap;
}

.hero__subtitle {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.5vw, 1.6rem);
  font-weight: 400;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  margin-bottom: 3.5rem;
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 0.6s;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1px;
  margin-bottom: 3.5rem;
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 0.8s;
  background: var(--border);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.hero__meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 1.2rem 2rem;
  background: var(--bg-card);
  flex: 1;
  min-width: 140px;
}

.hero__meta-label {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.hero__meta-value {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

/* ---- MAGNETIC CTA ---- */

.cta-magnetic {
  position: relative;
  display: inline-block;
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 1s;
}

/* Converging arrows */
.cta-magnetic__arrow {
  position: absolute;
  font-size: 0.75rem;
  color: var(--slap);
  opacity: 0;
  pointer-events: none;
  font-family: var(--font-display);
  font-weight: 700;
}

.cta-magnetic__arrow--t  { top: -28px; left: 50%; transform: translateX(-50%) rotate(90deg); animation: arrowConvergeV 2.4s ease-in-out infinite 0s; }
.cta-magnetic__arrow--b  { bottom: -28px; left: 50%; transform: translateX(-50%) rotate(-90deg); animation: arrowConvergeV 2.4s ease-in-out infinite 0.3s; }
.cta-magnetic__arrow--l  { left: -32px; top: 50%; transform: translateY(-50%) rotate(0deg); animation: arrowConvergeH 2.4s ease-in-out infinite 0.15s; }
.cta-magnetic__arrow--r  { right: -32px; top: 50%; transform: translateY(-50%) rotate(180deg); animation: arrowConvergeH 2.4s ease-in-out infinite 0.45s; }
.cta-magnetic__arrow--tl { top: -22px; left: -10px; transform: rotate(45deg); animation: arrowConvergeD 2.4s ease-in-out infinite 0.6s; }
.cta-magnetic__arrow--tr { top: -22px; right: -10px; transform: rotate(135deg); animation: arrowConvergeD 2.4s ease-in-out infinite 0.2s; }
.cta-magnetic__arrow--bl { bottom: -22px; left: -10px; transform: rotate(-45deg); animation: arrowConvergeD 2.4s ease-in-out infinite 0.5s; }
.cta-magnetic__arrow--br { bottom: -22px; right: -10px; transform: rotate(-135deg); animation: arrowConvergeD 2.4s ease-in-out infinite 0.35s; }

/* Outer ring pulse */
.cta-magnetic::before {
  content: '';
  position: absolute;
  inset: -12px;
  border-radius: 100px;
  border: 1px solid rgba(0, 201, 167, 0.15);
  animation: ringPulse 3s ease-in-out infinite;
  pointer-events: none;
}

.cta-magnetic::after {
  content: '';
  position: absolute;
  inset: -24px;
  border-radius: 100px;
  border: 1px solid rgba(0, 201, 167, 0.06);
  animation: ringPulse 3s ease-in-out infinite 1s;
  pointer-events: none;
}

/* The button itself — clean, solid */
.hero__cta,
.bottom-cta__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.1rem 3rem;
  background: rgba(255,255,255,0.06);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 100px;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.hero__cta:hover,
.bottom-cta__btn:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--slap);
  color: #fff;
  transform: translateY(-3px) scale(1.03);
  box-shadow:
    0 0 30px rgba(0, 201, 167, 0.2),
    0 0 60px rgba(0, 201, 167, 0.08),
    inset 0 0 20px rgba(0, 201, 167, 0.05);
}

.hero__cta:hover ~ .cta-magnetic__arrow,
.cta-magnetic:hover .cta-magnetic__arrow {
  color: #fff;
}

.hero__cta-arrow {
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero__cta:hover .hero__cta-arrow {
  transform: translateX(6px);
}

/* ---- SECTION COMMON ---- */

section {
  padding: clamp(5rem, 12vw, 9rem) var(--gutter);
}

.section-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--slap);
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  color: var(--text);
}

/* ---- HOSTED BY (after hero) ---- */

.hosted-by {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  padding: 3rem var(--gutter);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.hosted-by__label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-right: 1rem;
}

.hosted-by__logos {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.hosted-by__logo {
  height: 32px;
  opacity: 0.6;
  transition: opacity 0.3s;
  filter: brightness(0) invert(1);
}

.hosted-by__logo:hover {
  opacity: 1;
}

.hosted-by__logo--elev {
  height: 44px;
}

.hosted-by__divider {
  width: 1px;
  height: 24px;
  background: var(--border);
}

/* ---- ABOUT ---- */

.about {
  border-top: 1px solid var(--border);
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
  max-width: var(--max-w);
}

.about__text {
  font-size: 1.15rem;
  line-height: 2;
  color: var(--text-muted);
  font-weight: 300;
}

.about__text strong {
  font-weight: 500;
  color: var(--text);
}

.about__highlights {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-top: 0.5rem;
}

.about__highlight {
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.about__highlight::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--gradient);
  opacity: 0;
  transition: opacity 0.3s;
}

.about__highlight:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateX(4px);
}

.about__highlight:hover::before {
  opacity: 1;
}

.about__highlight-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--text);
}

.about__highlight-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ---- PROGRAM ---- */

.program {
  background: var(--surface);
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.program::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 60%;
  height: 180%;
  background: radial-gradient(circle, rgba(0,201,167,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.program__timeline {
  max-width: var(--max-w);
  margin-top: 3rem;
}

.program__item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 2rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
  transition: all 0.3s;
}

.program__item:hover {
  padding-left: 1rem;
  border-color: var(--border-hover);
}

.program__time {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--slap);
  padding-top: 0.15rem;
}

.program__name {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--text);
}

.program__desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ---- SPEAKERS ---- */

.speakers {
  border-top: none;
}

.speakers__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  max-width: var(--max-w);
  margin-top: 3rem;
}

.speaker-card {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: all 0.4s;
  position: relative;
  overflow: hidden;
}

.speaker-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-glow);
  opacity: 0;
  transition: opacity 0.4s;
  pointer-events: none;
}

.speaker-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.speaker-card:hover::after {
  opacity: 1;
}

.speaker-card__photo {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--surface);
  flex-shrink: 0;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  position: relative;
  z-index: 1;
  border: 1px solid var(--border);
}

.speaker-card__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.speaker-card > div:last-child {
  position: relative;
  z-index: 1;
}

.speaker-card__role {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--slap);
  margin-bottom: 0.25rem;
}

.speaker-card__name {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  color: var(--text);
}

.speaker-card__org {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.speaker-card__org-link {
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  transition: color 0.2s, border-color 0.2s;
}

.speaker-card__org-link:hover {
  color: var(--slap);
  border-color: var(--slap);
}

.speaker-card__bio {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.speaker-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  position: relative;
  z-index: 1;
}

.speaker-card__link:hover {
  color: var(--slap);
}

/* ---- PARTNERS ---- */

.partners {
  border-top: 1px solid var(--border);
}

.partners__section {
  margin-top: 2rem;
  margin-bottom: 3rem;
}

.partners__section-title {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 1.5rem;
}

.partners__logos {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  align-items: center;
}

.partners__logo {
  height: 52px;
  opacity: 0.7;
  transition: opacity 0.3s;
  filter: brightness(0) invert(1);
}

.partners__logo:hover {
  opacity: 1;
}

.partners__logo--elev {
  height: 64px;
}

/* ---- BOTTOM CTA ---- */

.bottom-cta {
  text-align: center;
  padding: clamp(6rem, 14vw, 12rem) var(--gutter);
  position: relative;
  overflow: hidden;
}

.bottom-cta::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80vw;
  height: 80vw;
  max-width: 900px;
  max-height: 900px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(25,100,192,0.08) 0%, rgba(0,201,167,0.05) 40%, transparent 70%);
  pointer-events: none;
  animation: orbFloat1 20s ease-in-out infinite;
}

.bottom-cta > div {
  position: relative;
  z-index: 1;
}

.bottom-cta__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  color: var(--text);
}

.bottom-cta__desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 3rem;
}

/* bottom-cta__btn shares styles with hero__cta via combined selector above */

.bottom-cta__btn {
  padding: 1.2rem 3.5rem;
  font-size: 1.1rem;
}

.bottom-cta__details {
  margin-top: 2.5rem;
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* ---- FOOTER ---- */

.footer {
  padding: 2rem var(--gutter);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.footer a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}

.footer a:hover {
  color: var(--slap);
}

/* ---- ANIMATIONS ---- */

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

@keyframes orbFloat1 {
  0%, 100% { transform: translateX(-50%) translate(0, 0) scale(1); }
  25% { transform: translateX(-50%) translate(-10%, 15%) scale(1.1); }
  50% { transform: translateX(-50%) translate(8%, 5%) scale(0.9); }
  75% { transform: translateX(-50%) translate(-5%, -8%) scale(1.05); }
}

@keyframes orbFloat2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  30% { transform: translate(12%, -10%) scale(1.15); }
  60% { transform: translate(-8%, -5%) scale(0.85); }
  80% { transform: translate(5%, 8%) scale(1.08); }
}

@keyframes orbFloat3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(18%, 12%) scale(1.2); }
  66% { transform: translate(-12%, -10%) scale(0.88); }
}

@keyframes pulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 0.8; }
}

@keyframes arrowConvergeV {
  0% { opacity: 0; transform: translateX(-50%) rotate(90deg) translateX(18px); }
  30% { opacity: 0.6; }
  60% { opacity: 0.3; transform: translateX(-50%) rotate(90deg) translateX(2px); }
  100% { opacity: 0; transform: translateX(-50%) rotate(90deg) translateX(18px); }
}

@keyframes arrowConvergeH {
  0% { opacity: 0; transform: translateY(-50%) translateX(14px); }
  30% { opacity: 0.6; }
  60% { opacity: 0.3; transform: translateY(-50%) translateX(2px); }
  100% { opacity: 0; transform: translateY(-50%) translateX(14px); }
}

@keyframes arrowConvergeD {
  0% { opacity: 0; scale: 1.3; }
  30% { opacity: 0.5; }
  60% { opacity: 0.2; scale: 0.8; }
  100% { opacity: 0; scale: 1.3; }
}

@keyframes ringPulse {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.04); }
}

/* ---- SCROLL REVEAL ---- */

.reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered reveal for children */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-stagger.visible > *:nth-child(1) { transition-delay: 0s; }
.reveal-stagger.visible > *:nth-child(2) { transition-delay: 0.1s; }
.reveal-stagger.visible > *:nth-child(3) { transition-delay: 0.2s; }
.reveal-stagger.visible > *:nth-child(4) { transition-delay: 0.3s; }
.reveal-stagger.visible > *:nth-child(5) { transition-delay: 0.35s; }

.reveal-stagger.visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* ---- RESPONSIVE ---- */

@media (max-width: 768px) {
  .hero {
    padding: 6rem var(--gutter) 3rem;
    min-height: 100svh;
  }

  .hero__title {
    font-size: clamp(2.2rem, 11vw, 5rem);
    white-space: nowrap;
  }

  .hero__subtitle {
    font-size: 1rem;
    letter-spacing: 0.05em;
    margin-bottom: 2.5rem;
  }

  .hero__overline {
    font-size: 0.7rem;
  }

  .hero__meta {
    flex-direction: column;
    gap: 1px;
    width: 100%;
  }

  .hero__meta-item {
    padding: 0.8rem 1.2rem;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .hero__cta {
    padding: 1rem 2.5rem;
    font-size: 0.95rem;
    width: 100%;
    justify-content: center;
  }

  .about__grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .about__text {
    font-size: 1rem;
  }

  .speakers__grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .program__item {
    grid-template-columns: 70px 1fr;
    gap: 1rem;
    padding: 1.5rem 0;
  }

  .program__name {
    font-size: 1.1rem;
  }

  .footer {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }

  .speaker-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .bottom-cta__title {
    font-size: clamp(1.6rem, 6vw, 2.5rem);
  }

  .bottom-cta__btn {
    width: 100%;
    justify-content: center;
  }

  section {
    padding: clamp(3rem, 8vw, 5rem) var(--gutter);
  }
}

/* ---- THANKS PAGE ---- */

.thanks {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 4rem var(--gutter);
}

.thanks__icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2rem;
  animation: fadeUp 0.6s ease forwards;
  box-shadow: 0 0 40px var(--accent-glow);
}

.thanks__icon svg {
  width: 32px;
  height: 32px;
  color: #fff;
}

.thanks__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  opacity: 0;
  animation: fadeUp 0.7s ease forwards 0.15s;
}

.thanks__desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 480px;
  margin-bottom: 3rem;
  line-height: 1.8;
  opacity: 0;
  animation: fadeUp 0.7s ease forwards 0.3s;
}

.thanks__share {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  opacity: 0;
  animation: fadeUp 0.7s ease forwards 0.45s;
}

.thanks__share-label {
  width: 100%;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
}

.thanks__share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: 100px;
  background: var(--bg-card);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s;
}

.thanks__share-btn:hover {
  border-color: var(--accent);
  background: var(--bg-card-hover);
  box-shadow: 0 0 20px var(--accent-glow);
}

.thanks__back {
  margin-top: 3rem;
  font-size: 0.9rem;
  color: var(--accent);
  text-decoration: none;
  opacity: 0;
  animation: fadeUp 0.7s ease forwards 0.6s;
}

.thanks__back:hover {
  color: var(--slap);
}