/* ═══════════════════════════════════════════════════════════
   DexIQ AI Presenter — Dexterous Brand Theme
   Color palette: Teal/Blue gradient, Navy background, Gold accents
   Fonts: Plus Jakarta Sans (display), Space Mono (code/badges)
   ═══════════════════════════════════════════════════════════ */

/* ─── Google Fonts Import ─── */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Space+Mono:wght@400;700&display=swap');

/* ─── CSS Variables ─── */
:root {
  /* Dexterous Brand Palette */
  --dex-teal:         #00B4D8;
  --dex-teal-dark:    #0096B7;
  --dex-teal-glow:    rgba(0, 180, 216, 0.4);
  --dex-cyan:         #00D4AA;
  --dex-blue:         #0077B6;
  --dex-blue-deep:    #004E8C;
  --dex-navy:         #0A1628;
  --dex-navy-light:   #132240;
  --dex-navy-card:    rgba(255, 255, 255, 0.04);
  --dex-gold:         #F5A623;
  --dex-gold-hover:   #FFB833;
  --dex-red:          #FF6B6B;
  --dex-green:        #00D4AA;
  --dex-white:        #FFFFFF;
  --dex-gray:         #B8C5D6;
  --dex-gray-dim:     #7A8BA3;
  --dex-border:       rgba(255, 255, 255, 0.08);
  --dex-border-hover: rgba(0, 180, 216, 0.25);

  /* Gradients */
  --dex-gradient:     linear-gradient(135deg, #00B4D8 0%, #0077B6 50%, #004E8C 100%);
  --dex-gradient-h:   linear-gradient(90deg, #00D4AA 0%, #00B4D8 40%, #0077B6 100%);
  --dex-gradient-sub: linear-gradient(135deg, #132240 0%, #0A1628 100%);

  /* Fonts */
  --font-display: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:    'Space Mono', 'SF Mono', 'Fira Code', monospace;

  /* ── Reveal.js Theme Variable Overrides ──
     black.css is loaded first and provides all --r-* defaults.
     We override only the ones that differ for Dexterous brand. */
  --r-background-color: #0A1628;
  --r-main-font: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --r-main-font-size: 42px;  /* Keep Reveal.js default — it uses this for internal scale base */
  --r-main-color: #FFFFFF;
  --r-heading-font: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --r-heading-color: #FFFFFF;
  --r-heading-text-transform: none;
  --r-heading-text-shadow: none;
  --r-heading-font-weight: 800;
  --r-code-font: 'Space Mono', 'SF Mono', 'Fira Code', monospace;
  --r-link-color: #00B4D8;
  --r-link-color-dark: #0096B7;
  --r-link-color-hover: #00D4AA;
  --r-selection-background-color: rgba(0, 180, 216, 0.3);
  --r-selection-color: #fff;
}

/* ─── Body & Root Backgrounds ─── */
html, body {
  background: #0A1628;
  margin: 0;
  padding: 0;
}

/* Ensure Reveal's auto-generated slide backgrounds are navy */
.reveal .slide-background {
  background-color: #0A1628;
}

/* ─── Reveal.js Overrides ──────────────────────────────────
   center is DISABLED in Reveal config. We handle vertical
   centering ourselves with flexbox, just like the reference
   preview. This avoids Reveal.js miscalculating scrollHeight
   when absolute-positioned decorative elements are present. */
.reveal {
  font-family: var(--font-display);
  font-size: 1rem;  /* Override Reveal's 42px base — our slide content uses explicit sizes */
  color: var(--dex-white);
}

.reveal .slides {
  text-align: left;
}

.reveal .slides section {
  color: var(--dex-white);
  padding: 50px 70px;
  box-sizing: border-box;
  /* NOTE: Do NOT set position:relative — Reveal.js needs position:absolute
     on sections for slide stacking. position:absolute also establishes a
     positioning context, so child elements with position:absolute still
     reference this section correctly. */
  text-align: left;
  overflow: hidden;  /* Clip oversized decorations like bg-arcs */

  /* Fill the full slide canvas */
  height: 100%;

  /* Reset Reveal's top offset — we handle centering via flex */
  top: 0 !important;
}

/* Flexbox centering — only on the PRESENT (visible) slide.
   Reveal.js sets display:block on .present and display:none on others.
   We override only the visible slide to flex so hidden slides stay hidden. */
.reveal .slides section.present {
  display: flex !important;
  flex-direction: column;
  justify-content: center;
}

.reveal p {
  color: var(--dex-gray);
  line-height: 1.6;
}

.reveal .progress span {
  background: var(--dex-gradient-h);
}

.reveal h1, .reveal h2, .reveal h3 {
  margin: 0;
  text-transform: none;
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  text-shadow: none;
  color: var(--dex-white);
}

/* ─── Gradient Mesh Background ─── */
.gradient-mesh {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.gradient-mesh::before {
  content: '';
  position: absolute;
  width: 130%;
  height: 130%;
  top: -15%;
  left: -15%;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(0, 180, 216, 0.25) 0%, transparent 55%),
    radial-gradient(ellipse at 80% 20%, rgba(0, 119, 182, 0.20) 0%, transparent 50%),
    radial-gradient(ellipse at 60% 80%, rgba(0, 212, 170, 0.12) 0%, transparent 45%);
  animation: meshFloat 22s ease-in-out infinite alternate;
}

@keyframes meshFloat {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-15px, 8px) scale(1.04); }
}

/* ─── Background Arcs (Dexterous signature curves) ─── */
.bg-arcs {
  position: absolute;
  left: -200px;
  top: 50%;
  transform: translateY(-50%);
  width: 500px;
  height: 700px;
  pointer-events: none;
  z-index: 0;
}

.bg-arcs .arc {
  position: absolute;
  border: 3px solid rgba(255, 255, 255, 0.10);
  border-radius: 50%;
  border-right-color: transparent;
  border-bottom-color: transparent;
}

.bg-arcs .arc:nth-child(1) { width: 300px; height: 300px; top: 50px;  left: 80px;  animation: arcSpin 30s linear infinite; }
.bg-arcs .arc:nth-child(2) { width: 400px; height: 400px; top: 0;    left: 30px;  animation: arcSpin 40s linear infinite reverse; }
.bg-arcs .arc:nth-child(3) { width: 500px; height: 500px; top: -50px; left: -20px; animation: arcSpin 50s linear infinite; }
.bg-arcs .arc:nth-child(4) { width: 600px; height: 600px; top: -100px;left: -70px; animation: arcSpin 60s linear infinite reverse; }

@keyframes arcSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ─── Watermark Arcs (bottom-right) ─── */
.watermark-arcs {
  position: absolute;
  right: -100px;
  bottom: -100px;
  width: 380px;
  height: 380px;
  pointer-events: none;
  z-index: 0;
  opacity: 0.06;
}

.watermark-arcs .warc {
  position: absolute;
  border: 4px solid white;
  border-radius: 50%;
  border-left-color: transparent;
  border-top-color: transparent;
}

.watermark-arcs .warc:nth-child(1) { width: 180px; height: 180px; bottom: 60px; right: 60px; }
.watermark-arcs .warc:nth-child(2) { width: 260px; height: 260px; bottom: 20px; right: 20px; }
.watermark-arcs .warc:nth-child(3) { width: 340px; height: 340px; bottom: -20px; right: -20px; }

/* ─── Slide Content (z-index above backgrounds) ─── */
.slide-content {
  position: relative;
  z-index: 1;
}

/* ─── Shared Typography ─── */
.badge {
  display: inline-block;
  background: rgba(0, 180, 216, 0.12);
  border: 1px solid rgba(0, 180, 216, 0.25);
  color: var(--dex-teal);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.slide-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
  color: var(--dex-white);
}

.slide-title .highlight-teal {
  background: var(--dex-gradient-h);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.slide-title .highlight-gold {
  color: var(--dex-gold);
}

.slide-subtitle {
  font-size: 1.05rem;
  color: var(--dex-gray);
  max-width: 600px;
  line-height: 1.7;
  font-weight: 400;
}

/* ═══════════════════════════════════════════
   SLIDE 0 — Title Slide
   ═══════════════════════════════════════════ */
.title-slide {
  padding-bottom: 20px;
}

.title-badge {
  display: inline-block;
  background: rgba(0, 180, 216, 0.12);
  border: 1px solid rgba(0, 180, 216, 0.25);
  color: var(--dex-teal);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.title-main {
  font-size: clamp(2.8rem, 5.5vw, 4.5rem);
  font-weight: 800;
  line-height: 1.08;
  margin-bottom: 20px;
}

.title-main .highlight-teal {
  background: var(--dex-gradient-h);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.title-main .highlight-gold {
  color: var(--dex-gold);
}

.title-sub {
  font-size: 1.15rem;
  color: var(--dex-gray);
  max-width: 600px;
  line-height: 1.7;
}

.stats-row {
  display: flex;
  gap: 48px;
  margin-top: 36px;
}

.stat-item { text-align: left; }

.stat-value {
  font-size: 2.4rem;
  font-weight: 800;
  background: var(--dex-gradient-h);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--dex-gray-dim);
  margin-top: 2px;
}

/* ═══════════════════════════════════════════
   SLIDE 1 — Intro
   ═══════════════════════════════════════════ */
.intro-slide {
  padding-bottom: 20px;
}

.intro-features {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.feature-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--dex-navy-card);
  border: 1px solid var(--dex-border);
  padding: 8px 16px;
  border-radius: 100px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--dex-gray);
  transition: all 0.3s ease;
}

.feature-chip:hover {
  border-color: var(--dex-border-hover);
  color: var(--dex-white);
}

.intro-quote {
  margin-top: 28px;
  padding: 20px 24px;
  border-left: 3px solid var(--dex-teal);
  background: rgba(0, 180, 216, 0.06);
  border-radius: 0 12px 12px 0;
  font-size: 0.95rem;
  color: var(--dex-gray);
  font-style: italic;
  max-width: 560px;
  line-height: 1.6;
}

/* ═══════════════════════════════════════════
   SLIDE 2 — Three Cards (Why AI)
   ═══════════════════════════════════════════ */
.three-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
}

.info-card {
  background: var(--dex-navy-card);
  border: 1px solid var(--dex-border);
  border-radius: 16px;
  padding: 26px;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.info-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--dex-gradient-h);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.info-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--dex-border-hover);
  transform: translateY(-3px);
}

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

.info-card .card-icon {
  font-size: 28px;
  margin-bottom: 12px;
  display: block;
}

.info-card .card-label {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--dex-white);
}

.info-card .card-text {
  font-size: 0.82rem;
  color: var(--dex-gray);
  line-height: 1.6;
}

/* ═══════════════════════════════════════════
   SLIDE 3 — Two Columns (Is / Isn't)
   ═══════════════════════════════════════════ */
.two-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 28px;
}

.column {
  background: var(--dex-navy-card);
  border: 1px solid var(--dex-border);
  border-radius: 16px;
  padding: 24px;
}

.column-header {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid;
}

.column-header.teal {
  color: var(--dex-teal);
  border-bottom-color: var(--dex-teal);
}

.column-header.gold {
  color: var(--dex-gold);
  border-bottom-color: var(--dex-gold);
}

.clean-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.list-item {
  font-size: 0.88rem;
  color: var(--dex-gray);
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  line-height: 1.5;
}

.list-item:last-child { border-bottom: none; }

.golden-rule {
  margin-top: 24px;
  padding: 16px 22px;
  background: rgba(245, 166, 35, 0.08);
  border: 1px solid rgba(245, 166, 35, 0.2);
  border-radius: 12px;
  font-size: 0.9rem;
  color: var(--dex-gold);
  text-align: center;
}

.golden-rule strong { color: var(--dex-gold-hover); }

/* ═══════════════════════════════════════════
   SLIDES 4, 7, 8 — Icon Grid (2x2)
   ═══════════════════════════════════════════ */
.icon-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 28px;
}

.icon-item {
  background: var(--dex-navy-card);
  border: 1px solid var(--dex-border);
  border-radius: 14px;
  padding: 22px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: all 0.3s ease;
}

.icon-item:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--dex-border-hover);
}

.icon-circle {
  width: 44px;
  height: 44px;
  background: rgba(0, 180, 216, 0.1);
  border: 1px solid rgba(0, 180, 216, 0.2);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.icon-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--dex-white);
  margin-bottom: 4px;
}

.icon-desc {
  font-size: 0.78rem;
  color: var(--dex-gray);
  line-height: 1.5;
}

/* ═══════════════════════════════════════════
   SLIDE 5 — Tool Cards (AI Ecosystem)
   ═══════════════════════════════════════════ */
.tool-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 28px;
}

.tool-card {
  background: var(--dex-navy-card);
  border: 1px solid var(--dex-border);
  border-radius: 14px;
  padding: 22px;
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
  text-align: center;
}

.tool-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--dex-border-hover);
  transform: translateY(-3px);
}

.tool-color {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
}

.tool-card .card-icon {
  font-size: 28px;
  margin-bottom: 10px;
  display: block;
}

.tool-card .card-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--dex-white);
  margin-bottom: 8px;
}

.tool-card .card-text {
  font-size: 0.75rem;
  color: var(--dex-gray);
  line-height: 1.5;
  margin-bottom: 12px;
}

.tool-tip {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--dex-teal);
  letter-spacing: 0.5px;
  padding-top: 10px;
  border-top: 1px solid var(--dex-border);
}

/* ═══════════════════════════════════════════
   SLIDE 6 — Prompt Comparison (NEW)
   ═══════════════════════════════════════════ */
.prompt-comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  margin-top: 24px;
}

.prompt-box {
  border-radius: 14px;
  padding: 22px;
  position: relative;
}

.bad-prompt {
  background: rgba(255, 107, 107, 0.06);
  border: 1px solid rgba(255, 107, 107, 0.18);
}

.good-prompt {
  background: rgba(0, 212, 170, 0.06);
  border: 1px solid rgba(0, 212, 170, 0.18);
}

.prompt-label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.bad-prompt .prompt-label { color: var(--dex-red); }
.good-prompt .prompt-label { color: var(--dex-green); }

.prompt-code {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--dex-white);
  line-height: 1.7;
  padding: 14px;
  background: rgba(0, 0, 0, 0.25);
  border-radius: 8px;
  margin-bottom: 12px;
}

.prompt-result {
  font-size: 0.78rem;
  color: var(--dex-gray-dim);
  font-style: italic;
}

.prompt-tips {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 22px;
}

.tip-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 16px;
  background: var(--dex-navy-card);
  border: 1px solid var(--dex-border);
  border-radius: 10px;
  transition: all 0.3s ease;
}

.tip-item:hover {
  border-color: var(--dex-border-hover);
  background: rgba(255, 255, 255, 0.06);
}

.tip-num {
  width: 28px;
  height: 28px;
  background: var(--dex-gradient);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  color: white;
  flex-shrink: 0;
}

.tip-text {
  font-size: 0.8rem;
  color: var(--dex-gray);
  line-height: 1.5;
}

.tip-text strong {
  color: var(--dex-white);
}

/* ═══════════════════════════════════════════
   SLIDE 9 — Safety Rules
   ═══════════════════════════════════════════ */
.safety-rules {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 28px;
}

.safety-rule {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 18px 22px;
  background: var(--dex-navy-card);
  border: 1px solid var(--dex-border);
  border-radius: 14px;
  transition: all 0.3s ease;
}

.safety-rule:hover {
  border-color: var(--dex-border-hover);
  background: rgba(255, 255, 255, 0.06);
}

.rule-number {
  width: 36px;
  height: 36px;
  background: rgba(245, 166, 35, 0.12);
  border: 1px solid rgba(245, 166, 35, 0.25);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--dex-gold);
  flex-shrink: 0;
}

.rule-content {
  flex: 1;
}

.rule-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--dex-white);
  margin-bottom: 4px;
}

.rule-desc {
  font-size: 0.78rem;
  color: var(--dex-gray);
  line-height: 1.5;
}

/* ═══════════════════════════════════════════
   SLIDE 10 — Meta Flow (NEW)
   ═══════════════════════════════════════════ */
.meta-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 36px;
  flex-wrap: wrap;
}

.flow-step {
  background: var(--dex-navy-light);
  border: 1px solid rgba(0, 180, 216, 0.18);
  border-radius: 14px;
  padding: 20px 24px;
  text-align: center;
  min-width: 130px;
  transition: all 0.3s ease;
}

.flow-step:hover {
  border-color: var(--dex-teal);
  box-shadow: 0 0 24px rgba(0, 180, 216, 0.12);
}

.flow-icon {
  font-size: 26px;
  margin-bottom: 8px;
}

.flow-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--dex-white);
  margin-bottom: 4px;
}

.flow-desc {
  font-size: 0.68rem;
  color: var(--dex-gray);
  line-height: 1.4;
}

.flow-arrow {
  color: var(--dex-teal);
  font-size: 20px;
  opacity: 0.5;
  animation: arrowPulse 2s ease-in-out infinite;
}

@keyframes arrowPulse {
  0%, 100% { opacity: 0.3; transform: translateX(0); }
  50% { opacity: 0.7; transform: translateX(3px); }
}

.meta-quote {
  margin-top: 30px;
  text-align: center;
  padding: 18px 28px;
  border-left: none;
  border: 1px solid rgba(0, 180, 216, 0.15);
  background: rgba(0, 180, 216, 0.05);
  border-radius: 12px;
  font-size: 0.92rem;
  color: var(--dex-gray);
  font-style: italic;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

/* ═══════════════════════════════════════════
   SLIDE 11 — Q&A
   ═══════════════════════════════════════════ */
.qa-layout {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.qa-steps {
  display: flex;
  gap: 20px;
  margin-top: 32px;
}

.qa-step {
  background: var(--dex-navy-card);
  border: 1px solid var(--dex-border);
  border-radius: 14px;
  padding: 22px 28px;
  text-align: center;
  min-width: 200px;
  transition: all 0.3s ease;
}

.qa-step:hover {
  border-color: var(--dex-border-hover);
}

.step-num {
  width: 40px;
  height: 40px;
  background: var(--dex-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 800;
  color: white;
  margin: 0 auto 12px;
}

.step-text {
  font-size: 0.85rem;
  color: var(--dex-gray);
  line-height: 1.5;
}

/* ═══════════════════════════════════════════
   SLIDE 12 — Outro
   ═══════════════════════════════════════════ */
.outro-slide {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.outro-quote {
  margin-top: 24px;
  padding: 20px 28px;
  border: 1px solid rgba(0, 180, 216, 0.15);
  background: rgba(0, 180, 216, 0.05);
  border-radius: 12px;
  font-size: 0.95rem;
  color: var(--dex-gray);
  font-style: italic;
  max-width: 580px;
  line-height: 1.6;
}

.takeaway-chips {
  display: flex;
  gap: 12px;
  margin-top: 28px;
  flex-wrap: wrap;
  justify-content: center;
}

.takeaway-chip {
  display: inline-block;
  background: rgba(245, 166, 35, 0.1);
  border: 1px solid rgba(245, 166, 35, 0.25);
  color: var(--dex-gold);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: 100px;
}

/* ═══════════════════════════════════════════
   Overlays (Question / Response)
   ═══════════════════════════════════════════ */
.question-overlay,
.response-overlay {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: overlayFadeIn 0.4s ease-out;
}

.question-overlay.hidden,
.response-overlay.hidden {
  opacity: 0;
  pointer-events: none;
  transform: translateX(-50%) translateY(20px);
  transition: all 0.3s ease;
}

@keyframes overlayFadeIn {
  from { opacity: 0; transform: translateX(-50%) translateY(20px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

.overlay-content,
.question-card,
.response-card {
  background: var(--dex-navy-light);
  border: 1px solid var(--dex-border);
  border-radius: 16px;
  padding: 20px 28px;
  max-width: 680px;
  backdrop-filter: blur(20px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.question-overlay .overlay-content,
.question-card {
  border-color: rgba(245, 166, 35, 0.3);
}

.response-overlay .overlay-content,
.response-card {
  border-color: rgba(0, 180, 216, 0.3);
}

.overlay-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.question-overlay .overlay-label,
.question-target {
  color: var(--dex-gold);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.response-overlay .overlay-label {
  color: var(--dex-teal);
}

.overlay-text,
.question-text {
  font-size: 1rem;
  color: var(--dex-white);
  line-height: 1.6;
}

.response-text {
  font-size: 1rem;
  color: var(--dex-white);
  line-height: 1.5;
  font-style: italic;
}

/* ═══════════════════════════════════════════
   Click-to-Start Overlay
   ═══════════════════════════════════════════ */
.start-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 22, 40, 0.92);
  backdrop-filter: blur(20px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 16px;
  cursor: pointer;
  transition: opacity 0.5s ease;
}

.start-overlay .start-icon {
  font-size: 3.5rem;
  animation: startPulse 2s ease-in-out infinite;
}

@keyframes startPulse {
  0%, 100% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.1); opacity: 1; }
}

.start-overlay .start-title {
  color: var(--dex-white);
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-display);
}

.start-overlay .start-subtitle {
  color: var(--dex-gray-dim);
  font-size: 0.9rem;
  font-family: var(--font-display);
}

/* ═══════════════════════════════════════════
   Fragment Animation Override
   Fragments are disabled (Reveal config: fragments: false)
   but just in case any .fragment classes remain, ensure
   they are always visible so content never hides.
   ═══════════════════════════════════════════ */
.reveal .fragment {
  opacity: 1 !important;
  transform: none !important;
  visibility: visible !important;
}

/* ═══════════════════════════════════════════
   Polish: Subtle glow effects on cards
   ═══════════════════════════════════════════ */
.info-card:hover,
.icon-item:hover,
.tool-card:hover,
.tip-item:hover,
.safety-rule:hover,
.flow-step:hover,
.qa-step:hover {
  box-shadow: 0 4px 24px rgba(0, 180, 216, 0.08);
}

/* Subtle gradient line at bottom of slide for visual depth */
.reveal .slides section::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(0, 180, 216, 0.15) 50%, transparent 100%);
  z-index: 2;
}

/* ═══════════════════════════════════════════════
   NEW — Slide 5: Specialist tools bar
   ═══════════════════════════════════════════════ */
.specialist-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  padding: 10px 14px;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--dex-border);
  border-radius: 8px;
  font-size: 0.72em;
}
.specialist-label {
  color: var(--dex-gray);
  font-weight: 600;
  white-space: nowrap;
}
.specialist-chip {
  background: rgba(0, 180, 216, 0.12);
  border: 1px solid rgba(0, 180, 216, 0.25);
  border-radius: 20px;
  padding: 3px 10px;
  color: var(--dex-teal);
  font-size: 0.95em;
  white-space: nowrap;
}

/* ═══════════════════════════════════════════════
   NEW — Slide 8: Section labels between tool-card groups
   ═══════════════════════════════════════════════ */
.tools-section-label {
  font-size: 0.75em;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--dex-gray);
  text-transform: uppercase;
  margin: 12px 0 6px 0;
}

/* ═══════════════════════════════════════════════
   NEW — Slide 9: Creative layout (carousel + video)
   ═══════════════════════════════════════════════ */
.creative-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 10px 0;
  align-items: start;
}
.carousel-panel,
.video-panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 6px;
  background: rgba(0, 180, 216, 0.06);
  border: 1px solid rgba(0, 180, 216, 0.2);
  border-radius: 14px;
}
.panel-label {
  font-size: 0.72em;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--dex-gray);
  text-transform: uppercase;
}

/* Image carousel */
.img-carousel {
  position: relative;
  width: 100%;
  height: clamp(250px, 37vh, 330px);
  overflow: hidden;
  border-radius: 12px;
  box-sizing: border-box;
}
.carousel-track {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}
.carousel-item {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.5s ease;
}
.carousel-item.active {
  opacity: 1;
}
.carousel-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.carousel-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 4px 8px;
  background: rgba(10,22,40,0.75);
  font-size: 0.65em;
  color: var(--dex-gray);
  text-align: center;
}
.carousel-dots {
  position: absolute;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 5px;
  z-index: 2;
}
.carousel-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  cursor: pointer;
  transition: background 0.2s;
}
.carousel-dot.active {
  background: var(--dex-teal);
}

/* Video tile */
.video-tile {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  height: clamp(250px, 37vh, 330px);
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
}
.ai-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.video-label {
  position: absolute;
  top: 8px;
  left: 8px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.video-tool-badge {
  background: var(--dex-teal);
  color: #000;
  font-size: 0.6em;
  font-weight: 700;
  border-radius: 4px;
  padding: 2px 7px;
  width: fit-content;
}
.video-desc {
  font-size: 0.58em;
  color: rgba(255,255,255,0.7);
  text-shadow: 0 1px 3px rgba(0,0,0,0.8);
}
.video-play-btn {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(10,22,40,0.85);
  border: 1px solid var(--dex-teal);
  color: var(--dex-teal);
  font-size: 0.65em;
  font-weight: 600;
  border-radius: 6px;
  padding: 4px 10px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  font-family: var(--font-display);
}
.video-play-btn:hover {
  background: var(--dex-teal);
  color: #000;
}

/* ═══════════════════════════════════════════════
   NEW — Slide 10: Music player card
   ═══════════════════════════════════════════════ */
.music-player-card {
  background: var(--dex-navy-card);
  border: 1px solid var(--dex-border);
  border-radius: 12px;
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.music-player-header {
  display: flex;
  align-items: center;
  gap: 12px;
}
.music-icon {
  font-size: 1.8em;
  flex-shrink: 0;
}
.music-info {
  flex: 1;
}
.music-title {
  font-size: 0.9em;
  font-weight: 700;
  color: var(--dex-white);
}
.music-sub {
  font-size: 0.68em;
  color: var(--dex-gray);
  margin-top: 2px;
}
.music-play-btn {
  background: var(--dex-teal);
  color: #000;
  border: none;
  border-radius: 8px;
  padding: 8px 18px;
  font-size: 0.75em;
  font-weight: 700;
  cursor: pointer;
  font-family: var(--font-display);
  transition: background 0.2s;
  flex-shrink: 0;
}
.music-play-btn:hover {
  background: var(--dex-teal-dark);
  color: #fff;
}
.music-visualiser {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 24px;
}
.vis-bar {
  flex: 1;
  background: var(--dex-border);
  border-radius: 2px;
  height: 4px;
  transition: height 0.15s ease;
}
.music-visualiser.playing .vis-bar:nth-child(1) { animation: visbar 0.6s ease-in-out infinite alternate; animation-delay: 0.0s; }
.music-visualiser.playing .vis-bar:nth-child(2) { animation: visbar 0.6s ease-in-out infinite alternate; animation-delay: 0.1s; }
.music-visualiser.playing .vis-bar:nth-child(3) { animation: visbar 0.6s ease-in-out infinite alternate; animation-delay: 0.25s; }
.music-visualiser.playing .vis-bar:nth-child(4) { animation: visbar 0.6s ease-in-out infinite alternate; animation-delay: 0.05s; }
.music-visualiser.playing .vis-bar:nth-child(5) { animation: visbar 0.6s ease-in-out infinite alternate; animation-delay: 0.3s; }
.music-visualiser.playing .vis-bar:nth-child(6) { animation: visbar 0.6s ease-in-out infinite alternate; animation-delay: 0.15s; }
.music-visualiser.playing .vis-bar:nth-child(7) { animation: visbar 0.6s ease-in-out infinite alternate; animation-delay: 0.2s; }
.music-visualiser.playing .vis-bar:nth-child(8) { animation: visbar 0.6s ease-in-out infinite alternate; animation-delay: 0.35s; }
@keyframes visbar {
  from { height: 4px; background: rgba(0,180,216,0.3); }
  to   { height: 22px; background: var(--dex-teal); }
}
.music-tools {
  font-size: 0.65em;
  color: var(--dex-gray-dim);
  text-align: right;
}

/* ═══════════════════════════════════════════════
   NEW — Slide 12: Q&A layout with QR code
   ═══════════════════════════════════════════════ */
.qa-main {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 30px;
  align-items: center;
  margin: 20px 0;
}
.qr-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.qr-image {
  width: 160px;
  height: 160px;
  border-radius: 10px;
  border: 3px solid var(--dex-teal);
  background: #fff;
  padding: 4px;
}
.qr-label {
  font-size: 0.65em;
  color: var(--dex-gray);
  text-align: center;
}
.qa-disclaimer {
  font-size: 0.7em;
  color: var(--dex-gray-dim);
  text-align: center;
  margin-top: 8px;
}

/* ═══════════════════════════════════════════════
   NEW — Slide 7: Pro tips grid (2-column override for prompt-tips)
   ═══════════════════════════════════════════════ */
.pro-tips-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 20px;
}