@import url('https://fonts.googleapis.com/css2?family=Afacad:ital,wght@0,400;0,500;0,600;0,700;1,400;1,600&family=Afacad+Flux:wght@300;400;500;600;700;800;900&display=swap');

:root {
  --primary-light: #2e6bc2;
  --primary-dark: #0f145c;
  --primary-mid: #1b3b8b;
  --accent-cyan: #38bdf8;
  --accent-blue: #60a5fa;
  --accent-glow: rgba(46, 107, 194, 0.45);
  --accent-glow-strong: rgba(56, 189, 248, 0.6);
  --text-white: #ffffff;
  --text-dim: #cbd5e1;
  --text-muted: #94a3b8;
  --surface-card: rgba(255, 255, 255, 0.08);
  --surface-card-hover: rgba(255, 255, 255, 0.14);
  --surface-border: rgba(255, 255, 255, 0.15);
  --surface-border-bright: rgba(56, 189, 248, 0.4);
  --glass-bg: rgba(15, 20, 92, 0.7);
  --glass-blur: blur(20px);
  --transition-smooth: cubic-bezier(0.16, 1, 0.3, 1);
  --font-afacad: 'Afacad Flux', 'Afacad', system-ui, -apple-system, sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-afacad);
  background-color: #070a2c;
  color: var(--text-white);
  overflow: hidden;
  width: 100vw;
  height: 100vh;
  user-select: none;
}

/* Background canvas with dynamic gradient & mesh */
.presentation-container {
  position: relative;
  width: 100vw;
  height: 100vh;
  background: linear-gradient(135deg, #2e6bc2 0%, #1a398c 45%, #0f145c 85%, #080c35 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* Atmospheric Glow & Tech Background Lines */
.bg-ambient-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.55;
  animation: floatOrb 18s ease-in-out infinite alternate;
}

.orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, #38bdf8 0%, rgba(46, 107, 194, 0.2) 70%, transparent 100%);
  top: -15%;
  right: -10%;
}

.orb-2 {
  width: 750px;
  height: 750px;
  background: radial-gradient(circle, #2e6bc2 0%, rgba(15, 20, 92, 0.3) 70%, transparent 100%);
  bottom: -20%;
  left: -15%;
  animation-delay: -6s;
}

.orb-3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(96, 165, 250, 0.4) 0%, transparent 70%);
  top: 40%;
  left: 30%;
  animation-delay: -12s;
}

.bg-grid-overlay {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
}

@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, -30px) scale(1.08); }
  100% { transform: translate(-30px, 40px) scale(0.95); }
}

/* Presentation Stage: 16:9 Aspect Ratio */
.slides-viewport {
  position: relative;
  width: 100%;
  height: 100%;
  max-width: 1920px;
  max-height: 1080px;
  aspect-ratio: 16 / 9;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Individual Slide */
.slide {
  position: absolute;
  inset: 0;
  padding: 5vh 6vw 8vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transform: scale(0.96) translateY(20px);
  transition: opacity 0.65s var(--transition-smooth), 
              transform 0.65s var(--transition-smooth), 
              visibility 0.65s;
  pointer-events: none;
}

.slide.active {
  opacity: 1;
  visibility: visible;
  transform: scale(1) translateY(0);
  pointer-events: auto;
}

.slide.prev-out {
  opacity: 0;
  transform: scale(1.03) translateY(-25px);
}

.slide.next-out {
  opacity: 0;
  transform: scale(0.94) translateY(30px);
}

/* Staggered entrance for slide elements */
.slide.active .animate-in {
  animation: slideFadeUp 0.65s var(--transition-smooth) forwards;
}

.slide.active .delay-1 { animation-delay: 0.1s; }
.slide.active .delay-2 { animation-delay: 0.2s; }
.slide.active .delay-3 { animation-delay: 0.3s; }
.slide.active .delay-4 { animation-delay: 0.4s; }
.slide.active .delay-5 { animation-delay: 0.5s; }

.animate-in {
  opacity: 0;
  transform: translateY(24px);
}

@keyframes slideFadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Header pill & badge */
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 9999px;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  margin-bottom: 1.5rem;
}

.badge-pill.keynote-badge {
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(46, 107, 194, 0.3));
  border-color: rgba(56, 189, 248, 0.45);
  color: #e0f2fe;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

/* Typography styles */
.hero-title {
  font-size: clamp(2.6rem, 5.2vw, 5.4rem);
  font-weight: 800;
  line-height: 1.1;
  text-align: center;
  letter-spacing: -0.02em;
  background: linear-gradient(180deg, #ffffff 30%, #e0e7ff 80%, #93c5fd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  margin-bottom: 1.2rem;
}

.hero-subtitle {
  font-size: clamp(1.2rem, 2.2vw, 2.1rem);
  font-weight: 500;
  color: #bfdbfe;
  text-align: center;
  letter-spacing: 0.04em;
}

.slide-title-header {
  width: 100%;
  text-align: center;
  margin-bottom: 2.5rem;
  position: relative;
}

.slide-title {
  font-size: clamp(2rem, 3.2vw, 3.4rem);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: #ffffff;
  display: inline-block;
  position: relative;
  padding-bottom: 12px;
}

.slide-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 4px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
  border-radius: 2px;
}

.slide-subtitle {
  font-size: clamp(1.1rem, 1.6vw, 1.5rem);
  color: #cbd5e1;
  margin-top: 0.6rem;
  font-weight: 400;
}

/* =========================================
   SLIDE 1: WELCOME COVER
   ========================================= */
.slide-welcome {
  position: relative;
  overflow: hidden;
}

.cover-layout {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  max-width: 1100px;
}

.cover-welcome {
  font-size: clamp(1.5rem, 2.8vw, 2.8rem);
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: #93c5fd;
  margin-bottom: 0.8rem;
  text-shadow: 0 4px 20px rgba(46, 107, 194, 0.6);
}

/* =========================================
   SLIDE 2: ĐỐI TÁC ĐỒNG HÀNH TRUYỀN THÔNG
   ========================================= */
.partners-row {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 3vw;
  width: 100%;
  max-width: 1200px;
}

.partner-card-large {
  flex: 1;
  max-width: 360px;
  min-height: 220px;
  background: #ffffff;
  border-radius: 20px;
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(255, 255, 255, 0.2);
  transition: transform 0.4s var(--transition-smooth), box-shadow 0.4s var(--transition-smooth);
}

.partner-card-large:hover {
  transform: translateY(-8px) scale(1.03);
  box-shadow: 0 28px 50px rgba(0, 0, 0, 0.45), 0 0 30px rgba(56, 189, 248, 0.4);
}

.partner-card-large img {
  max-width: 100%;
  max-height: 120px;
  object-fit: contain;
  filter: contrast(1.05);
}

.partner-card-large img.logo-yba {
  max-height: 135px;
  transform: scale(1.12);
}

/* =========================================
   SLIDE 3: CÁC ĐỐI TÁC LAN TOẢ (16 LOGOS)
   ========================================= */
.partners-grid-16 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.4vw;
  width: 100%;
  max-width: 1300px;
}

.partner-card-small {
  background: #ffffff;
  border-radius: 16px;
  height: 98px;
  padding: 10px 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
  transition: transform 0.35s var(--transition-smooth), box-shadow 0.35s var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.partner-card-small:hover {
  transform: translateY(-5px) scale(1.04);
  box-shadow: 0 16px 35px rgba(0, 0, 0, 0.35), 0 0 20px rgba(56, 189, 248, 0.35);
}

.partner-card-small img {
  max-width: 82%;
  max-height: 52px;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
  margin: 0 auto;
  filter: contrast(1.03);
  transition: transform 0.3s ease;
}

/* Optical balance adjustments so all 16 logos have equal visual weight */
.partner-card-small img.logo-square {
  max-height: 70px;
  max-width: 76%;
  transform: scale(1.15);
}

/* Specific fine-tuning: ITF thu nhỏ vừa vặn, cân đối hài hòa */
.partner-card-small img.logo-itf {
  max-height: 48px;
  max-width: 80%;
  transform: none;
}

.partner-card-small img.logo-wide {
  max-height: 42px;
  max-width: 86%;
}

/* Specific fine-tuning: VASI thu gọn vừa vặn */
.partner-card-small img.logo-vasi {
  max-height: 32px;
  max-width: 72%;
  transform: scale(0.85);
}

.partner-card-small img.logo-ultrawide {
  max-height: 38px;
  max-width: 94%;
  transform: scale(1.12);
}

/* =========================================
   SLIDE 4: DẤU ẤN LAN TỎA (METRICS)
   ========================================= */
.slide-metrics {
  position: relative;
  overflow: visible;
}

/* Ambient glow orb behind metrics */
.slide4-ambient-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -45%);
  width: 900px;
  height: 450px;
  background: radial-gradient(ellipse, rgba(56, 189, 248, 0.18) 0%, rgba(46, 107, 194, 0.12) 45%, transparent 75%);
  filter: blur(60px);
  pointer-events: none;
  z-index: 1;
  animation: metricsPulseAura 6s ease-in-out infinite alternate;
}

@keyframes metricsPulseAura {
  0% { transform: translate(-50%, -45%) scale(0.92); opacity: 0.6; }
  100% { transform: translate(-50%, -45%) scale(1.08); opacity: 1; }
}

/* Header layout: CHẶNG HÀ NỘI xếp trên DẤU ẤN LAN TỎA theo chiều dọc */
.slide4-header {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 2.5rem;
  position: relative;
  z-index: 2;
}

.slide4-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 0;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  padding: 8px 24px;
  background: rgba(56, 189, 248, 0.16);
  border: 1px solid rgba(56, 189, 248, 0.5);
  box-shadow: 0 0 25px rgba(56, 189, 248, 0.3), inset 0 0 15px rgba(56, 189, 248, 0.15);
  color: #e0f2fe;
}

.slide4-main-title {
  font-size: clamp(2.4rem, 4.2vw, 4.2rem);
  font-weight: 900;
  letter-spacing: 0.08em;
  background: linear-gradient(180deg, #ffffff 30%, #e0e7ff 70%, #93c5fd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
  margin-bottom: 0;
  position: relative;
  display: inline-block;
}

.slide4-main-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 140px;
  height: 4px;
  background: linear-gradient(90deg, transparent, #38bdf8, #60a5fa, transparent);
  border-radius: 2px;
  box-shadow: 0 0 12px #38bdf8;
  animation: shimmerLine 3s ease-in-out infinite alternate;
}

@keyframes shimmerLine {
  0% { width: 100px; opacity: 0.7; }
  100% { width: 180px; opacity: 1; }
}

.metrics-row {
  display: flex;
  justify-content: center;
  align-items: stretch;
  gap: 1.8vw;
  width: 100%;
  max-width: 1380px;
  position: relative;
  z-index: 2;
}

.metric-card {
  flex: 1;
  min-width: 0;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.11) 0%, rgba(15, 20, 92, 0.45) 100%);
  border: 1px solid rgba(255, 255, 255, 0.22);
  backdrop-filter: blur(24px);
  border-radius: 24px;
  padding: 32px 18px 26px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
  transition: transform 0.45s var(--transition-smooth), border-color 0.45s, box-shadow 0.45s;
  cursor: default;
}

/* Card shimmer sweep on entrance */
.metric-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #38bdf8, #60a5fa, #ffffff);
  opacity: 0.9;
  box-shadow: 0 0 12px #38bdf8;
}

.metric-card::after {
  content: '';
  position: absolute;
  top: -60%;
  left: -60%;
  width: 220%;
  height: 220%;
  background: linear-gradient(135deg, transparent 40%, rgba(255, 255, 255, 0.08) 50%, transparent 60%);
  transform: rotate(35deg);
  pointer-events: none;
  transition: transform 0.8s ease;
}

.metric-card:hover::after {
  transform: rotate(35deg) translate(20%, 20%);
}

.metric-card:hover {
  transform: translateY(-12px) scale(1.03);
  border-color: rgba(56, 189, 248, 0.7);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.45), 0 0 40px rgba(56, 189, 248, 0.4);
}

/* Icon badge circle */
.metric-icon-circle {
  width: 60px;
  height: 60px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.25), rgba(46, 107, 194, 0.4));
  border: 1px solid rgba(56, 189, 248, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #38bdf8;
  margin-bottom: 1.2rem;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25), 0 0 15px rgba(56, 189, 248, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.metric-icon-circle.highlight {
  background: linear-gradient(135deg, rgba(251, 191, 36, 0.25), rgba(46, 107, 194, 0.4));
  border-color: rgba(251, 191, 36, 0.5);
  color: #fde047;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25), 0 0 20px rgba(251, 191, 36, 0.35);
}

.metric-card:hover .metric-icon-circle {
  transform: scale(1.12) rotate(-6deg);
}

/* Large numbers with glowing gradient */
.metric-number {
  font-size: clamp(2.6rem, 3.8vw, 4.6rem);
  font-weight: 900;
  line-height: 1;
  color: #ffffff;
  letter-spacing: -0.02em;
  margin-bottom: 0.8rem;
  background: linear-gradient(180deg, #ffffff 45%, #bae6fd 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 6px 18px rgba(0, 0, 0, 0.35));
  transition: transform 0.3s ease;
  white-space: nowrap;
}

.metric-number.highlight-num {
  background: linear-gradient(180deg, #ffffff 40%, #fef08a 85%, #f59e0b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Metric label */
.metric-label {
  font-size: clamp(0.95rem, 1.22vw, 1.2rem);
  font-weight: 600;
  color: #cbd5e1;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 1rem;
  line-height: 1.35;
  min-height: 2.7em;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Metric accent bottom bar that expands on finish */
.metric-accent-bar {
  width: 48px;
  height: 4px;
  background: linear-gradient(90deg, #38bdf8, #60a5fa);
  border-radius: 3px;
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.6);
  transition: width 0.6s var(--transition-smooth), box-shadow 0.6s;
}

.metric-accent-bar.highlight {
  background: linear-gradient(90deg, #f59e0b, #fbbf24);
  box-shadow: 0 0 12px rgba(245, 158, 11, 0.6);
}

.metric-card.counted-finished .metric-accent-bar {
  width: 80px;
  box-shadow: 0 0 16px rgba(56, 189, 248, 0.9);
}

.metric-card.counted-finished .metric-accent-bar.highlight {
  width: 80px;
  box-shadow: 0 0 18px rgba(245, 158, 11, 0.9);
}

/* Celebration bounce on finish */
.metric-card.counted-finished {
  animation: cardFinishPulse 0.65s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes cardFinishPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.04); box-shadow: 0 25px 60px rgba(56, 189, 248, 0.45); }
  100% { transform: scale(1); }
}

/* =========================================
   SLIDE 5: KEYNOTES AGENDA ACCORDION
   ========================================= */
.slide-agenda {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  width: 100%;
}

.agenda-container-card {
  width: 100%;
  max-width: 1180px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-height: 87vh;
  overflow-y: auto;
  padding: 6px;
  scrollbar-width: thin;
  scrollbar-color: rgba(56, 189, 248, 0.35) transparent;
}

.agenda-container-card::-webkit-scrollbar {
  width: 6px;
}

.agenda-container-card::-webkit-scrollbar-thumb {
  background: rgba(56, 189, 248, 0.35);
  border-radius: 4px;
}

/* Individual Keynote Block - Sleek Card */
.agenda-block {
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(15, 28, 68, 0.65);
  backdrop-filter: blur(20px);
  overflow: hidden;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
  transition: border-color 0.35s ease, box-shadow 0.35s ease, transform 0.3s ease;
}

.agenda-block:hover {
  border-color: rgba(56, 189, 248, 0.45);
  box-shadow: 0 14px 35px rgba(0, 0, 0, 0.35), 0 0 20px rgba(56, 189, 248, 0.15);
}

.agenda-block.expanded {
  border-color: rgba(56, 189, 248, 0.65);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.45), 0 0 30px rgba(56, 189, 248, 0.22);
}

/* Block Header */
.agenda-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px;
  background: linear-gradient(90deg, rgba(38, 70, 138, 0.9) 0%, rgba(27, 53, 108, 0.88) 100%);
  cursor: pointer;
  user-select: none;
  transition: background 0.25s ease;
}

.agenda-block:hover .agenda-block-header {
  background: linear-gradient(90deg, rgba(46, 85, 168, 0.95) 0%, rgba(33, 65, 132, 0.92) 100%);
}

.agenda-block.expanded .agenda-block-header {
  background: linear-gradient(90deg, rgba(46, 85, 168, 1) 0%, rgba(30, 60, 125, 0.98) 100%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.agenda-header-left {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.agenda-title-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.agenda-main-title {
  font-size: clamp(1.35rem, 1.85vw, 1.75rem);
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.agenda-keynote-pill {
  font-size: 0.85rem;
  font-weight: 500;
  color: #a5b4fc;
  letter-spacing: 0.03em;
}

.agenda-main-desc {
  font-size: clamp(0.9rem, 1.15vw, 1.02rem);
  color: #cbd5e1;
  font-weight: 400;
}

.agenda-header-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.agenda-slides-count {
  font-size: 0.95rem;
  font-weight: 500;
  color: #cbd5e1;
}

.agenda-chevron-btn {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.3s ease, background 0.2s, box-shadow 0.2s;
}

.agenda-chevron-icon {
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.agenda-block.expanded .agenda-chevron-icon {
  transform: rotate(180deg);
}

.agenda-block:hover .agenda-chevron-btn {
  background: rgba(255, 255, 255, 0.26);
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.3);
}

/* Smooth Accordion Body (CSS Grid 0fr -> 1fr) */
.agenda-block-body-wrapper {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.agenda-block.expanded .agenda-block-body-wrapper {
  grid-template-rows: 1fr;
}

.agenda-block-body {
  overflow: hidden;
  background: rgba(14, 26, 60, 0.92);
  padding: 0 28px;
  display: flex;
  flex-direction: column;
  transition: padding 0.35s ease;
}

.agenda-block.expanded .agenda-block-body {
  padding: 8px 28px 14px;
}

/* Individual Sub-row */
.agenda-subrow {
  display: flex;
  align-items: center;
  padding: 9px 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s ease, padding-left 0.2s ease;
}

.agenda-subrow:last-child {
  border-bottom: none;
}

.agenda-subrow:hover {
  background: rgba(255, 255, 255, 0.08);
  padding-left: 12px;
}

.subrow-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 24px;
  padding: 0 6px;
  border-radius: 6px;
  border: 1px solid rgba(147, 197, 253, 0.35);
  background: rgba(56, 189, 248, 0.08);
  color: #bae6fd;
  font-size: 0.82rem;
  font-weight: 600;
  margin-right: 12px;
  letter-spacing: 0.02em;
}

.subrow-speaker {
  font-size: 0.98rem;
  font-weight: 700;
  color: #ffffff;
}

.subrow-sep {
  color: #64748b;
  margin: 0 8px;
  font-weight: 400;
}

.subrow-topic {
  font-size: 0.95rem;
  font-weight: 400;
  color: #cbd5e1;
}

.subrow-aside {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.35);
  font-size: 0.85rem;
}

.subrow-play-icon {
  opacity: 0.5;
  transition: opacity 0.2s, transform 0.2s;
}

.agenda-subrow:hover .subrow-play-icon {
  opacity: 1;
  transform: scale(1.15);
  color: #38bdf8;
}

/* =========================================
   KEYNOTE INTRO SLIDES (6, 9, 11, 13)
   ========================================= */
.keynote-intro-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  max-width: 1100px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(20px);
  border-radius: 30px;
  padding: 60px 50px;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.35);
  position: relative;
  overflow: hidden;
}

.keynote-intro-box::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at center, rgba(56, 189, 248, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.keynote-intro-title {
  font-size: clamp(2.4rem, 4.4vw, 4.4rem);
  font-weight: 800;
  line-height: 1.15;
  color: #ffffff;
  margin-bottom: 1.2rem;
  letter-spacing: -0.01em;
}

.keynote-intro-desc {
  font-size: clamp(1.25rem, 2vw, 1.85rem);
  color: #93c5fd;
  font-weight: 500;
  max-width: 850px;
  line-height: 1.4;
}

/* =========================================
   SPEAKER SLIDES: SINGLE SPEAKER (Slide 7, 10, 14)
   ========================================= */
.speaker-single-layout {
  display: flex;
  align-items: center;
  gap: 5vw;
  width: 100%;
  max-width: 1300px;
}

.speaker-single-content {
  flex: 1.25;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.speaker-single-media {
  flex: 0.9;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.speaker-avatar-wrapper {
  position: relative;
  width: min(380px, 34vw);
  aspect-ratio: 1 / 1.1;
  border-radius: 28px;
  overflow: hidden;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4), 0 0 40px rgba(46, 107, 194, 0.4);
  border: 2px solid rgba(255, 255, 255, 0.25);
  background: linear-gradient(180deg, rgba(46, 107, 194, 0.3) 0%, rgba(15, 20, 92, 0.8) 100%);
}

.speaker-avatar-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 0.6s var(--transition-smooth);
}

.speaker-avatar-wrapper:hover img {
  transform: scale(1.05);
}

.speaker-name {
  font-size: clamp(2rem, 3.4vw, 3.2rem);
  font-weight: 800;
  color: #ffffff;
  line-height: 1.1;
}

.speaker-position {
  font-size: clamp(1.15rem, 1.7vw, 1.55rem);
  font-weight: 600;
  color: var(--accent-cyan);
  line-height: 1.35;
}

.speaker-bio-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  margin-top: 0.5rem;
}

.speaker-bio-list li {
  position: relative;
  padding-left: 28px;
  font-size: clamp(1rem, 1.3vw, 1.2rem);
  color: #e2e8f0;
  line-height: 1.45;
}

.speaker-bio-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
}

/* =========================================
   SPEAKER SLIDES: MULTI SPEAKERS (Slide 8 - 3 cols, Slide 12 - 2 cols)
   ========================================= */
.speakers-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2vw;
  width: 100%;
  max-width: 1400px;
  align-items: stretch;
}

.speakers-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3.5vw;
  width: 100%;
  max-width: 1300px;
  align-items: stretch;
}

.speaker-card-col {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(16px);
  border-radius: 22px;
  padding: 24px 22px;
  display: flex;
  flex-direction: column;
  align-items: center;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.25);
  transition: transform 0.35s var(--transition-smooth), border-color 0.35s, box-shadow 0.35s;
}

.speaker-card-col:hover {
  transform: translateY(-6px);
  border-color: rgba(56, 189, 248, 0.45);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.35), 0 0 25px rgba(46, 107, 194, 0.3);
}

.speaker-col-avatar {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid rgba(56, 189, 248, 0.5);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  margin-bottom: 1.2rem;
  background: #0f145c;
  flex-shrink: 0;
}

.speakers-grid-2 .speaker-col-avatar {
  width: 160px;
  height: 160px;
}

.speaker-col-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.speaker-col-name {
  font-size: clamp(1.2rem, 1.55vw, 1.5rem);
  font-weight: 700;
  color: #ffffff;
  text-align: center;
  margin-bottom: 0.35rem;
}

.speaker-col-title {
  font-size: clamp(0.95rem, 1.15vw, 1.1rem);
  color: var(--accent-cyan);
  font-weight: 600;
  text-align: center;
  margin-bottom: 1rem;
  line-height: 1.3;
}

.speaker-col-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  width: 100%;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1rem;
}

.speaker-col-bullets li {
  position: relative;
  padding-left: 18px;
  font-size: clamp(0.85rem, 1.05vw, 0.98rem);
  color: #cbd5e1;
  line-height: 1.4;
  text-align: left;
}

.speaker-col-bullets li::before {
  content: '•';
  position: absolute;
  left: 4px;
  color: var(--accent-cyan);
  font-size: 1.2rem;
  line-height: 1;
}

/* =========================================
   BOTTOM PROGRESS BAR & CONTROLS DOCK
   ========================================= */
.bottom-dock {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  flex-direction: column;
  pointer-events: auto;
  transition: transform 0.45s var(--transition-smooth), opacity 0.35s ease;
  will-change: transform, opacity;
}

/* Auto-hide: slide the control bar down, keeping the sleek progress bar at the very bottom */
.bottom-dock.dock-hidden {
  transform: translateY(calc(100% - 6px));
}

/* Floating indicator hint when dock is hidden */
.dock-hidden-hint {
  position: fixed;
  bottom: 12px;
  right: 20px;
  z-index: 45;
  background: rgba(15, 20, 92, 0.7);
  border: 1px solid rgba(56, 189, 248, 0.35);
  backdrop-filter: blur(12px);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  color: #93c5fd;
  display: flex;
  align-items: center;
  gap: 6px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 0.3s, transform 0.3s;
}

.bottom-dock.dock-hidden ~ .dock-hidden-hint {
  opacity: 0.75;
  transform: translateY(0);
}

/* Progress bar strip */
.progress-bar-container {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.12);
  cursor: pointer;
  position: relative;
  transition: height 0.2s;
}

.progress-bar-container:hover {
  height: 10px;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #38bdf8 0%, #60a5fa 50%, #ffffff 100%);
  box-shadow: 0 0 12px var(--accent-cyan);
  transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Control footer bar */
.dock-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 24px;
  background: rgba(15, 20, 92, 0.75);
  backdrop-filter: blur(16px);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.dock-left, .dock-right, .dock-center {
  display: flex;
  align-items: center;
  gap: 12px;
}

.dock-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: #e2e8f0;
  letter-spacing: 0.05em;
}

.dock-slide-counter {
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
  padding: 4px 14px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  letter-spacing: 0.05em;
}

.dock-btn {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #ffffff;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
}

.dock-btn:hover {
  background: rgba(255, 255, 255, 0.22);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateY(-2px);
}

.dock-btn:active {
  transform: translateY(0);
}

.dock-btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* Navigation Arrow floating buttons on left and right edges */
.nav-arrow-btn {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  z-index: 40;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(15, 20, 92, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(12px);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: opacity 0.4s var(--transition-smooth), transform 0.3s var(--transition-smooth), background 0.3s;
  opacity: 0.5;
}

.nav-arrow-btn.nav-hidden {
  opacity: 0 !important;
  pointer-events: none;
}

.nav-arrow-btn:hover {
  opacity: 1;
  background: rgba(46, 107, 194, 0.85);
  border-color: var(--accent-cyan);
  box-shadow: 0 0 20px rgba(56, 189, 248, 0.4);
  transform: translateY(-50%) scale(1.1);
}

.nav-arrow-btn.prev {
  left: 20px;
}

.nav-arrow-btn.next {
  right: 20px;
}

/* =========================================
   OVERVIEW MODAL (GRID OF ALL SLIDES)
   ========================================= */
.overview-modal {
  position: fixed;
  inset: 0;
  background: rgba(7, 10, 44, 0.94);
  backdrop-filter: blur(24px);
  z-index: 100;
  display: flex;
  flex-direction: column;
  padding: 40px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}

.overview-modal.active {
  opacity: 1;
  visibility: visible;
}

.overview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.overview-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: #ffffff;
}

.overview-close-btn {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  transition: background 0.2s;
}

.overview-close-btn:hover {
  background: rgba(239, 68, 68, 0.4);
}

.overview-grid {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
  overflow-y: auto;
  padding: 10px;
}

.overview-card {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, rgba(46, 107, 194, 0.35), rgba(15, 20, 92, 0.7));
  border: 2px solid rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  transition: all 0.25s;
  position: relative;
}

.overview-card:hover {
  transform: scale(1.05);
  border-color: var(--accent-cyan);
  box-shadow: 0 10px 25px rgba(56, 189, 248, 0.3);
}

.overview-card.current {
  border-color: #38bdf8;
  box-shadow: 0 0 25px rgba(56, 189, 248, 0.6);
  background: linear-gradient(135deg, rgba(46, 107, 194, 0.6), rgba(15, 20, 92, 0.9));
}

.overview-card-number {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.overview-card-title {
  font-size: 1rem;
  font-weight: 600;
  color: #ffffff;
  line-height: 1.25;
}

/* Toast Notification (Progress restored) */
.toast-notice {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 150;
  background: rgba(15, 20, 92, 0.85);
  border: 1px solid var(--accent-cyan);
  backdrop-filter: blur(16px);
  padding: 12px 20px;
  border-radius: 12px;
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  transform: translateY(-60px);
  opacity: 0;
  transition: all 0.4s var(--transition-smooth);
}

.toast-notice.show {
  transform: translateY(0);
  opacity: 1;
}

/* Keyboard hints popup */
.keyboard-hint {
  font-size: 0.8rem;
  color: #94a3b8;
  display: flex;
  align-items: center;
  gap: 6px;
}

.kbd-badge {
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 0.75rem;
  font-family: monospace;
  color: #e2e8f0;
}