/* ===== DESIGN TOKENS ===== */
:root {
  --black: #0E0B1A;
  --dark: #140F26;
  --surface: #1E1838;
  --surface2: #261F44;
  --surface-light: rgba(255, 255, 255, 0.06);
  --border: rgba(180, 140, 255, 0.18);
  --border-bright: rgba(180, 140, 255, 0.38);
  --accent: #B080FF;
  --accent2: #D060FF;
  --accent-dim: #8A5FCC;
  --accent-glow: rgba(176, 128, 255, 0.25);
  --text: #F5F0FF;
  --text-dim: #A890CC;
  --text-muted: #5A4880;
  --mono: 'JetBrains Mono', 'Fira Code', monospace;
  --display: 'Syne', sans-serif;
  --body: 'DM Sans', sans-serif;
  --radius: 16px;
  --radius-lg: 24px;
  --max: 1160px;
  --pad: 24px;
  --shadow: 0 24px 64px rgba(0, 0, 10, 0.5);
  --shadow-accent: 0 0 60px rgba(176, 128, 255, 0.15);
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--body);
  font-weight: 300;
  color: var(--text);
  background: linear-gradient(160deg, #1A1230 0%, #0E0B1A 40%, #150E28 100%);
  line-height: 1.6;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font-family: inherit; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ===== SCANLINES ===== */
.scanlines {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.03) 2px,
    rgba(0, 0, 0, 0.03) 4px
  );
}

/* ===== UTILITY ===== */
.container {
  width: min(var(--max), calc(100% - 2 * var(--pad)));
  margin: 0 auto;
}

.mono { font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.05em; }

.inline-link {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ===== HEADER ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(14, 11, 26, 0.82);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  position: relative;
}

.brand {
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text);
  white-space: nowrap;
}

.brand-bracket {
  color: var(--accent);
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border-radius: 8px;
  color: var(--text-dim);
  font-size: 0.88rem;
  font-weight: 400;
  transition: color 0.2s, background 0.2s;
  white-space: nowrap;
}

.nav a:hover {
  color: var(--text);
  background: rgba(91, 127, 255, 0.08);
}

.nav-num {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--accent);
  opacity: 0.7;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  padding: 8px;
  z-index: 110;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 10px;
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  transition: all 0.2s ease;
  white-space: nowrap;
  text-decoration: none;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 8px 32px rgba(91, 127, 255, 0.3);
}
.btn-primary:hover {
  background: #7294ff;
  box-shadow: 0 12px 40px rgba(91, 127, 255, 0.45);
}

.btn-ghost {
  background: rgba(91, 127, 255, 0.06);
  border-color: var(--border);
  color: var(--text-dim);
}
.btn-ghost:hover {
  background: rgba(91, 127, 255, 0.12);
  color: var(--text);
  border-color: var(--border-bright);
}

.btn-outline {
  background: transparent;
  border-color: var(--border-bright);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 600;
}
.btn-outline:hover {
  background: rgba(91, 127, 255, 0.08);
}

.btn-lg { padding: 14px 28px; font-size: 0.88rem; }

/* ===== SECTIONS ===== */
.section { padding: 88px 0; }

.section-alt {
  background: rgba(255, 255, 255, 0.03);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-header {
  margin-bottom: 40px;
}

.section-tag {
  display: inline-block;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-header h2 {
  margin: 0;
}

h2 {
  font-family: var(--display);
  font-size: clamp(2rem, 3.5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 0 0 16px;
}

h3 {
  font-family: var(--display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin: 0 0 12px;
}

h4 {
  font-family: var(--display);
  font-weight: 700;
  color: var(--text);
  margin: 0 0 8px;
}

p {
  margin: 0 0 12px;
  color: var(--text-dim);
  font-weight: 300;
}

.section-intro {
  font-size: 1.08rem;
  max-width: 58rem;
  line-height: 1.7;
  margin-bottom: 40px;
  color: var(--text-dim);
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 100px 0 80px;
  position: relative;
  overflow: hidden;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(200, 160, 255, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200, 160, 255, 0.07) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
}

.hero-glow {
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 80vw;
  height: 60vh;
  background: radial-gradient(ellipse at center, rgba(176, 128, 255, 0.18) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 28px;
  max-width: 900px;
  width: 100%;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--accent);
  background: rgba(91, 127, 255, 0.08);
  border: 1px solid rgba(91, 127, 255, 0.22);
  padding: 7px 16px;
  border-radius: 999px;
  letter-spacing: 0.05em;
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

.hero h1 {
  font-family: var(--display);
  font-size: clamp(3rem, 7vw, 6.5rem);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -0.03em;
  margin: 0;
  color: var(--text);
}

.hero-accent {
  color: var(--accent);
}

.hero-outline {
  -webkit-text-stroke: 1.5px rgba(255,255,255,0.3);
  color: transparent;
}

.hero-sub {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: var(--text-dim);
  max-width: 480px;
  line-height: 1.7;
  margin: 0;
}

.br-desktop { display: block; }

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 24px 40px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  flex-wrap: wrap;
  justify-content: center;
  backdrop-filter: blur(12px);
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.stat-num {
  font-family: var(--mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* ===== ABOUT SLIDER ===== */
.about-slider-wrap {
  position: relative;
}

.about-viewport {
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.about-cards {
  display: flex;
  gap: 20px;
  transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}

.about-card {
  flex: 0 0 var(--card-width, calc((100% - 40px) / 3));
  padding: 32px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  opacity: 0.4;
  transform: scale(0.97);
  transition: opacity 0.4s ease, transform 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
  position: relative;
}

.about-card.active {
  opacity: 1;
  transform: scale(1);
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.09);
  box-shadow: 0 0 40px rgba(176, 128, 255, 0.15);
}

.card-index {
  color: var(--accent);
  margin-bottom: 16px;
  font-size: 0.72rem;
}

.about-card h3 {
  font-size: 1.3rem;
  margin-bottom: 14px;
}

.about-card p {
  font-size: 1rem;
  line-height: 1.65;
  margin: 0;
}

.slider-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 24px;
}

.slider-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--border-bright);
  background: rgba(255, 255, 255, 0.07);
  color: var(--text);
  cursor: pointer;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.slider-btn:hover {
  background: rgba(176, 128, 255, 0.15);
  border-color: var(--accent);
  color: var(--accent);
}

.slider-dots {
  display: flex;
  gap: 8px;
  align-items: center;
}

.dot-item {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: all 0.3s ease;
}

.dot-item.active {
  background: var(--accent);
  width: 20px;
  border-radius: 3px;
}

/* ===== PROGRAM ===== */
.program-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.program-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: border-color 0.3s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}

.program-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  opacity: 0;
  transition: opacity 0.3s;
}

.program-card:hover {
  border-color: var(--border-bright);
  box-shadow: 0 8px 40px rgba(0, 0, 10, 0.4);
}

.program-card:hover::before { opacity: 1; }

.program-card-label {
  color: var(--accent);
  margin-bottom: 16px;
  font-size: 0.72rem;
}

.program-card h3 {
  font-size: 1.15rem;
  margin-bottom: 12px;
  line-height: 1.35;
}

.list {
  margin: 12px 0 0;
  padding-left: 0;
  list-style: none;
  color: var(--text-dim);
}

.list li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.92rem;
}

.list li::before {
  content: '›';
  color: var(--accent);
  font-family: var(--mono);
  flex-shrink: 0;
  margin-top: 1px;
}

/* ===== SPEAKERS CAROUSEL ===== */
.speakers-carousel-wrap {
  position: relative;
  display: flex;
  align-items: center;
  gap: 16px;
}

.carousel {
  display: flex;
  gap: 16px;
  overflow: hidden;
  flex: 1;
  padding: 8px 0;
}

.carousel-arrow {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid var(--border-bright);
  background: rgba(255, 255, 255, 0.07);
  color: var(--text);
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.2s ease;
  z-index: 2;
}

.carousel-arrow:hover {
  background: rgba(176, 128, 255, 0.15);
  border-color: var(--accent);
  color: var(--accent);
  transform: scale(1.05);
}

.speaker-card {
  flex: 0 0 calc((100% - 48px) / 4);
  min-width: 220px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
  user-select: none;
}

.speaker-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 10, 0.4);
}

.avatar {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.85rem;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  margin-bottom: 16px;
  box-shadow: 0 8px 24px rgba(91, 127, 255, 0.3);
}

.speaker-info h3 {
  font-size: 0.95rem;
  line-height: 1.35;
  margin-bottom: 6px;
}

.speaker-company {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent);
  margin: 0;
}

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
  align-items: center;
}

/* ===== ORGANIZERS ===== */
.organizers { margin-top: 56px; }

.organizers-title {
  color: var(--text-muted);
  font-size: 0.78rem;
  margin-bottom: 24px;
  font-family: var(--mono);
  font-weight: 400;
  letter-spacing: 0.05em;
}

.organizers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.org-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-decoration: none;
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
  display: block;
}

.org-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 10, 0.4);
}

.org-avatar {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.78rem;
  color: var(--accent);
  background: rgba(176, 128, 255, 0.1);
  border: 1px solid rgba(176, 128, 255, 0.25);
  margin-bottom: 16px;
}

.org-card h4 { font-size: 1rem; margin-bottom: 4px; }
.org-card p { font-size: 0.88rem; color: var(--text-dim); margin: 0 0 12px; }
.org-link { color: var(--accent); font-size: 0.72rem; }

/* ===== INFO BENTO ===== */
.info-bento {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: auto;
  gap: 16px;
}

.info-bento-wide {
  grid-column: span 4;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.info-bento-wide p {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-dim);
}

.info-bento-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.3s;
}

.info-bento-card:hover { border-color: var(--border-bright); }

.info-bento-card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--text-dim);
}

.accent-card {
  background: linear-gradient(145deg, rgba(176, 128, 255, 0.14), rgba(208, 96, 255, 0.07));
  border-color: rgba(176, 128, 255, 0.35);
}

.highlight-card {
  background: rgba(255, 255, 255, 0.07);
  border-color: var(--border-bright);
}

.info-big {
  font-family: var(--mono);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.1;
}

.info-big-sm {
  font-family: var(--display);
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.1;
}

.info-year {
  font-size: 1rem;
  color: var(--text-dim);
  font-weight: 400;
}

.info-sub {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.info-email {
  color: var(--accent);
  font-size: 0.78rem;
  word-break: break-all;
  line-height: 1.6;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.info-label {
  display: block;
  color: var(--accent);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}

/* ===== CONTACT ===== */
.contact-block {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
}

.contact-block h2 { margin-bottom: 8px; }
.contact-block p { max-width: 440px; }

/* ===== TICKETS ===== */

/* Pre-register banner */
.preregister-banner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 32px 36px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(176, 128, 255, 0.5);
  background: linear-gradient(135deg, rgba(176, 128, 255, 0.14) 0%, rgba(208, 96, 255, 0.08) 100%);
  margin-bottom: 40px;
  overflow: hidden;
  flex-wrap: wrap;
}

.preregister-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 20% 50%, rgba(176, 128, 255, 0.18) 0%, transparent 60%);
  pointer-events: none;
}

.preregister-pulse {
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(176, 128, 255, 0.15) 0%, transparent 70%);
  animation: bannerPulse 3s ease-in-out infinite;
  pointer-events: none;
}

@keyframes bannerPulse {
  0%, 100% { transform: scale(1); opacity: 0.6; }
  50% { transform: scale(1.2); opacity: 1; }
}

.preregister-text {
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
  z-index: 1;
}

.preregister-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
}

.badge-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 1.8s ease-in-out infinite;
}

.preregister-text p {
  margin: 0;
  font-size: 1rem;
  color: var(--text-dim);
  max-width: 520px;
}

/* Inactive tickets */
.tickets-inactive-label {
  color: var(--text-muted);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.tickets-inactive {
  opacity: 0.38;
  pointer-events: none;
  filter: grayscale(0.4);
}

.tickets-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.ticket-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.ticket-badge-inactive {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--text-muted);
  color: var(--dark);
  font-size: 0.65rem;
  padding: 4px 12px;
  border-radius: 999px;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.ticket-type {
  color: var(--text-muted);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
}

.ticket-price {
  font-family: var(--mono);
  font-size: 3rem;
  font-weight: 700;
  color: var(--text-dim);
  line-height: 1;
}

.ticket-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  flex: 1;
  margin: 0;
}

.ticket-card .btn {
  width: 100%;
  margin-top: 8px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}



/* ===== FOOTER ===== */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  background: rgba(255, 255, 255, 0.02);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand {
  color: var(--accent);
  font-weight: 700;
  font-size: 0.9rem;
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.82rem;
}

.footer-email {
  color: var(--text-dim);
  font-size: 0.75rem;
  transition: color 0.2s;
}
.footer-email:hover { color: var(--accent); }

/* ===== TOAST ===== */
.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  z-index: 1000;
  display: none;
  max-width: min(520px, calc(100% - 32px));
  padding: 14px 20px;
  border-radius: 12px;
  border: 1px solid var(--border-bright);
  background: rgba(10, 10, 18, 0.96);
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.8rem;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(16px);
  animation: toastIn 0.3s ease;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(12px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .program-grid { grid-template-columns: 1fr 1fr; }
  .info-bento { grid-template-columns: repeat(2, 1fr); }
  .info-bento-wide { grid-column: span 2; }
  .speaker-card { flex: 0 0 calc((100% - 32px) / 3); }
}

@media (max-width: 860px) {
  .nav { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(5, 5, 8, 0.98); backdrop-filter: blur(20px); flex-direction: column; align-items: center; justify-content: center; gap: 8px; z-index: 105; }
  .nav.open { display: flex; }
  .nav a { font-size: 1.2rem; padding: 14px 24px; }
  .nav-num { font-size: 0.72rem; }
  .hamburger { display: flex; }
  .header-inner .btn-primary { display: none; }

  .about-card { flex: 0 0 calc((100% - 20px) / 2); }
  .speaker-card { flex: 0 0 calc((100% - 16px) / 2); }
  .organizers-grid { grid-template-columns: 1fr 1fr; }
  .tickets-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
  .program-grid { grid-template-columns: 1fr; }
  .preregister-banner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
  :root { --pad: 16px; }

  .section { padding: 64px 0; }

  .hero { padding: 90px 0 64px; }
  .hero h1 { font-size: clamp(2.4rem, 10vw, 4rem); }
  .hero-stats { padding: 20px 24px; gap: 20px; }
  .stat-num { font-size: 1.6rem; }
  .br-desktop { display: none; }

  .about-card { flex: 0 0 100%; }

  .speakers-carousel-wrap { gap: 10px; }
  .carousel-arrow { width: 42px; height: 42px; font-size: 1rem; }
  .speaker-card { flex: 0 0 calc(100% - 0px); min-width: unset; }

  .organizers-grid { grid-template-columns: 1fr; }

  .info-bento { grid-template-columns: 1fr; }
  .info-bento-wide { grid-column: span 1; padding: 24px; }

  .contact-block { flex-direction: column; align-items: flex-start; }
  .contact-block .btn { width: 100%; }

  .tickets-grid { max-width: 100%; }
  .preregister-banner { padding: 24px 20px; }
  .preregister-banner .btn { width: 100%; }

  .footer-inner { flex-direction: column; align-items: flex-start; gap: 8px; }

  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; max-width: 360px; }
}