/* ============================================
   MAZATRON TECHNOLOGIES — Pitch Deck
   Bain-inspired: Light, clean, institutional
   White backgrounds, deep teal accent, generous whitespace
   Typography: Lexend (headings) + Source Sans 3 (body)
   ============================================ */

/* --- Custom Properties --- */
:root {
  --pd-brand: #0F766E;
  --pd-brand-deep: #115E59;
  --pd-brand-light: #CCFBF1;
  --pd-brand-bg: #F0FDFA;
  --pd-red: #CC2936;
  --pd-bg: #FFFFFF;
  --pd-bg-warm: #FAFAF9;
  --pd-bg-alt: #F5F5F4;
  --pd-bg-dark: #1C1917;
  --pd-text: #1C1917;
  --pd-text-secondary: #57534E;
  --pd-text-muted: #A8A29E;
  --pd-border: #E7E5E4;
  --pd-border-light: #F5F5F4;
  --pd-font-heading: 'Lexend', sans-serif;
  --pd-font-body: 'Source Sans 3', sans-serif;
  --pd-radius: 4px;
  --pd-transition: 200ms ease;
  --pd-max-width: 1060px;
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-snap-type: y mandatory;
  overflow-y: scroll;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--pd-font-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--pd-text);
  background: var(--pd-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; scroll-snap-type: none; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}


/* ============================================
   SLIDE BASE
   ============================================ */
.slide {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  scroll-snap-align: start;
  position: relative;
  overflow: hidden;
  padding: 100px 48px 60px;
}

.slide-content {
  width: 100%;
  max-width: var(--pd-max-width);
  margin: 0 auto;
}

.slide-label {
  display: inline-block;
  font-family: var(--pd-font-heading);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--pd-brand);
  margin-bottom: 20px;
}

.slide-heading {
  font-family: var(--pd-font-heading);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--pd-text);
  margin-bottom: 16px;
}

.slide-subheading {
  font-size: 1.1rem;
  color: var(--pd-text-secondary);
  max-width: 600px;
  margin-bottom: 48px;
  line-height: 1.6;
}


/* ============================================
   NAVIGATION — Bain-style clean top bar
   ============================================ */
.deck-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
  height: 56px;
  background: #FFFFFF;
  border-bottom: 1px solid var(--pd-border);
}

.deck-nav-brand {
  font-family: var(--pd-font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--pd-text);
  letter-spacing: 0.01em;
}

.deck-nav-dots {
  display: flex;
  gap: 6px;
  align-items: center;
}

.deck-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--pd-border);
  border: none;
  cursor: pointer;
  transition: all var(--pd-transition);
  padding: 0;
}

.deck-dot:hover {
  background: var(--pd-text-muted);
}

.deck-dot.active {
  background: var(--pd-brand);
  width: 20px;
  border-radius: 100px;
}

.deck-nav-counter {
  font-family: var(--pd-font-heading);
  font-size: 0.75rem;
  color: var(--pd-text-muted);
  min-width: 44px;
  text-align: right;
}


/* ============================================
   SLIDE 1: TITLE
   ============================================ */
.slide-title {
  background: var(--pd-bg);
  text-align: left;
}

.slide-title .slide-content {
  max-width: 800px;
}

.slide-title .slide-label {
  color: var(--pd-text-muted);
  letter-spacing: 0.2em;
}

.title-heading {
  font-family: var(--pd-font-heading);
  font-size: clamp(2.5rem, 5.5vw, 4rem);
  font-weight: 800;
  line-height: 1.05;
  color: var(--pd-text);
  margin-bottom: 28px;
}

.title-suffix {
  font-weight: 400;
  font-size: 0.45em;
  color: var(--pd-text-muted);
  display: block;
  margin-top: 8px;
}

.title-sub {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  color: var(--pd-text-secondary);
  max-width: 540px;
  line-height: 1.55;
  margin-bottom: 40px;
}

.title-accent {
  width: 48px;
  height: 3px;
  background: var(--pd-brand);
  margin-bottom: 48px;
}

.scroll-cta {
  color: var(--pd-text-muted);
  padding: 8px;
  transition: color var(--pd-transition), transform var(--pd-transition);
}

.scroll-cta:hover {
  color: var(--pd-brand);
  transform: translateY(3px);
}


/* ============================================
   SLIDE 2: PROBLEM
   ============================================ */
.slide-problem {
  background: var(--pd-bg);
}

.problem-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 48px;
}

.stat-block {
  padding: 36px 32px;
  background: var(--pd-bg-warm);
  border-left: 3px solid var(--pd-brand);
}

.stat-number {
  display: block;
  font-family: var(--pd-font-heading);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--pd-brand);
  line-height: 1;
  margin-bottom: 12px;
}

.stat-desc {
  font-size: 0.95rem;
  color: var(--pd-text-secondary);
  line-height: 1.55;
}

.problem-points {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 36px;
}

.problem-point {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.point-icon {
  flex-shrink: 0;
  color: var(--pd-red);
  margin-top: 2px;
}

.problem-point p {
  color: var(--pd-text-secondary);
  font-size: 0.95rem;
  line-height: 1.55;
}

.problem-result {
  padding: 24px 28px;
  background: var(--pd-bg-warm);
  border-left: 3px solid var(--pd-red);
}

.problem-result p {
  color: var(--pd-text-secondary);
  font-size: 0.95rem;
  font-style: italic;
}


/* ============================================
   SLIDE 3: INSIGHT (Epiphany Bridge)
   ============================================ */
.slide-insight {
  background: var(--pd-bg-dark);
}

.slide-insight-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.slide-insight-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.slide-insight-overlay {
  position: absolute;
  inset: 0;
  background: rgba(28, 25, 23, 0.82);
}

.slide-insight .slide-content {
  position: relative;
  z-index: 1;
}

.slide-insight .slide-label {
  color: rgba(255,255,255,0.5);
}

.slide-insight .slide-heading {
  color: #FFFFFF;
}

.insight-quote {
  max-width: 680px;
}

.insight-quote p {
  font-size: 1.1rem;
  line-height: 1.75;
  color: rgba(255,255,255,0.8);
  margin-bottom: 20px;
}

.insight-quote strong {
  color: #FFFFFF;
  font-weight: 600;
}

.insight-highlight {
  font-family: var(--pd-font-heading);
  font-size: 1.2rem !important;
  font-weight: 600;
  color: #FFFFFF !important;
  padding-top: 20px;
  margin-top: 8px;
  border-top: 1px solid rgba(255,255,255,0.15);
}


/* ============================================
   SLIDE 4: SOLUTION
   ============================================ */
.slide-solution {
  background: var(--pd-bg);
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--pd-border);
  border: 1px solid var(--pd-border);
}

.pillars-grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.integration-callout {
  margin-top: 32px;
  padding: 24px 28px;
  background: var(--pd-bg-warm);
  border-left: 3px solid var(--pd-brand);
  font-size: 0.95rem;
  color: var(--pd-text-secondary);
  line-height: 1.6;
  font-style: italic;
}

.integration-callout p {
  max-width: none;
}

.pillar-card {
  padding: 36px 32px;
  background: var(--pd-bg);
  transition: background var(--pd-transition);
}

.pillar-card:hover {
  background: var(--pd-bg-warm);
}

.pillar-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--pd-brand);
  margin-bottom: 18px;
}

.pillar-title {
  font-family: var(--pd-font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--pd-text);
  margin-bottom: 14px;
}

.pillar-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pillar-list li {
  font-size: 0.88rem;
  color: var(--pd-text-secondary);
  line-height: 1.5;
  padding-left: 14px;
  position: relative;
}

.pillar-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 4px;
  height: 1px;
  background: var(--pd-brand);
}


/* ============================================
   SLIDE 5: WHY US — MOAT
   ============================================ */
.slide-moat {
  background: var(--pd-bg-warm);
}

.comparison-table {
  margin-bottom: 40px;
  border: 1px solid var(--pd-border);
  overflow: hidden;
}

.comparison-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.comparison-col-label {
  font-family: var(--pd-font-heading);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 16px 24px;
}

.comparison-col-label.muted {
  background: var(--pd-bg-alt);
  color: var(--pd-text-muted);
}

.comparison-col-label.highlight {
  background: var(--pd-brand);
  color: #FFFFFF;
}

.comparison-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--pd-border);
}

.comparison-cell {
  padding: 14px 24px;
  font-size: 0.92rem;
  line-height: 1.45;
}

.comparison-cell.muted {
  background: var(--pd-bg);
  color: var(--pd-text-muted);
}

.comparison-cell.highlight {
  background: var(--pd-bg);
  color: var(--pd-text);
  font-weight: 500;
  border-left: 1px solid var(--pd-border);
}

.moat-quote {
  font-family: var(--pd-font-body);
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--pd-text-secondary);
  padding: 24px 0 0;
  border-top: 2px solid var(--pd-brand);
  line-height: 1.6;
  font-style: italic;
}


/* ============================================
   SLIDE 6: TRACTION
   ============================================ */
.slide-traction {
  background: var(--pd-bg);
}

.traction-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.traction-col-title {
  font-family: var(--pd-font-heading);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--pd-brand);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--pd-brand);
}

.traction-table {
  display: flex;
  flex-direction: column;
}

.traction-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--pd-border-light);
}

.traction-row:last-child {
  border-bottom: none;
}

.traction-client {
  font-size: 0.9rem;
  color: var(--pd-text-secondary);
}

.traction-scale {
  font-family: var(--pd-font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--pd-brand);
  white-space: nowrap;
}

.traction-relationships {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.relationship-tag {
  font-size: 0.78rem;
  padding: 5px 14px;
  border: 1px solid var(--pd-border);
  color: var(--pd-text-secondary);
}

.traction-photo {
  margin-bottom: 32px;
  position: relative;
}

.traction-photo img {
  width: 100%;
  max-height: 240px;
  object-fit: cover;
  border: 1px solid var(--pd-border);
}

.traction-photo-caption {
  display: block;
  font-size: 0.75rem;
  color: var(--pd-text-muted);
  margin-top: 8px;
  font-style: italic;
}

.traction-summary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  border-top: 2px solid var(--pd-brand);
  border-bottom: 1px solid var(--pd-border);
}

.summary-stat {
  text-align: center;
  padding: 32px 40px;
  flex: 1;
}

.summary-number {
  display: block;
  font-family: var(--pd-font-heading);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  color: var(--pd-brand);
  line-height: 1;
}

.summary-label {
  font-size: 0.78rem;
  color: var(--pd-text-muted);
  margin-top: 8px;
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: var(--pd-font-heading);
  font-weight: 500;
}

.summary-divider {
  width: 1px;
  height: 48px;
  background: var(--pd-border);
}


/* ============================================
   SLIDE 7: MARKET
   ============================================ */
.slide-market {
  background: var(--pd-bg-warm);
}

.market-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--pd-border);
  margin-bottom: 48px;
}

.market-stat {
  text-align: center;
  padding: 36px 24px;
  border-right: 1px solid var(--pd-border);
}

.market-stat:last-child {
  border-right: none;
}

.market-number {
  display: block;
  font-family: var(--pd-font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--pd-brand);
  line-height: 1;
  margin-bottom: 10px;
}

.market-desc {
  font-size: 0.85rem;
  color: var(--pd-text-muted);
}

.market-tiers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--pd-border);
}

.tier-card {
  padding: 32px 28px;
  background: var(--pd-bg);
  border-right: 1px solid var(--pd-border);
  transition: background var(--pd-transition);
}

.tier-card:last-child {
  border-right: none;
}

.tier-card:hover {
  background: var(--pd-bg-warm);
}

.tier-1 { border-top: 3px solid var(--pd-brand); }
.tier-2 { border-top: 3px solid var(--pd-brand); opacity: 0.85; }
.tier-3 { border-top: 3px solid var(--pd-brand); opacity: 0.7; }

.tier-badge {
  display: inline-block;
  font-family: var(--pd-font-heading);
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--pd-brand);
  margin-bottom: 14px;
}

.tier-title {
  font-family: var(--pd-font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--pd-text);
  margin-bottom: 12px;
}

.tier-desc {
  font-size: 0.88rem;
  color: var(--pd-text-secondary);
  line-height: 1.55;
}


/* ============================================
   SLIDE 8: IIT COLLABORATION
   ============================================ */
.slide-iit {
  background: var(--pd-bg);
}

.iit-columns {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 32px;
  align-items: start;
  margin-bottom: 48px;
}

.iit-col-header {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--pd-brand);
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--pd-brand);
}

.iit-col-header h3 {
  font-family: var(--pd-font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--pd-text);
}

.iit-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.iit-list li {
  font-size: 0.92rem;
  color: var(--pd-text-secondary);
  line-height: 1.5;
  padding-left: 16px;
  position: relative;
}

.iit-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 5px;
  height: 1px;
  background: var(--pd-brand);
}

.iit-col-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: center;
}

.iit-overlap {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--pd-brand);
  border-radius: 50%;
  color: var(--pd-brand);
}

.iit-proposal {
  padding: 36px 32px;
  background: var(--pd-bg-warm);
  border-top: 3px solid var(--pd-brand);
  text-align: center;
}

.iit-proposal-title {
  font-family: var(--pd-font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--pd-text);
  margin-bottom: 12px;
}

.iit-proposal p {
  font-size: 0.95rem;
  color: var(--pd-text-secondary);
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.6;
}


/* ============================================
   SLIDE 9: BUSINESS MODEL
   ============================================ */
.slide-business {
  background: var(--pd-bg-warm);
}

.revenue-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--pd-border);
  border: 1px solid var(--pd-border);
  margin-bottom: 40px;
}

.revenue-card {
  padding: 28px 24px;
  background: var(--pd-bg);
  transition: background var(--pd-transition);
}

.revenue-card:hover {
  background: var(--pd-bg-warm);
}

.revenue-card-premium {
  background: var(--pd-brand-bg);
}

.revenue-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--pd-brand);
  margin-bottom: 16px;
}

.revenue-card h4 {
  font-family: var(--pd-font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--pd-text);
  margin-bottom: 8px;
}

.revenue-model {
  font-size: 0.82rem;
  color: var(--pd-text-muted);
}

.business-highlights {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.biz-highlight {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--pd-text-secondary);
  font-size: 0.95rem;
}

.biz-highlight svg {
  color: var(--pd-brand);
  flex-shrink: 0;
}


/* ============================================
   SLIDE 10: ROADMAP
   ============================================ */
.slide-roadmap {
  background: var(--pd-bg);
}

.roadmap-timeline {
  display: flex;
  align-items: stretch;
  gap: 0;
  border: 1px solid var(--pd-border);
}

.roadmap-phase {
  flex: 1;
  padding: 32px 28px;
  background: var(--pd-bg);
  border-right: 1px solid var(--pd-border);
}

.roadmap-phase:last-of-type {
  border-right: none;
}

.phase-1 { border-top: 4px solid var(--pd-brand); }
.phase-2 { border-top: 4px solid var(--pd-brand); opacity: 0.8; }
.phase-3 { border-top: 4px solid var(--pd-brand); opacity: 0.6; }

.phase-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.phase-badge {
  font-family: var(--pd-font-heading);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--pd-brand);
}

.phase-period {
  font-size: 0.72rem;
  color: var(--pd-text-muted);
}

.phase-title {
  font-family: var(--pd-font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--pd-text);
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--pd-border-light);
}

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

.phase-list li {
  font-size: 0.88rem;
  color: var(--pd-text-secondary);
  line-height: 1.45;
  padding-left: 14px;
  position: relative;
}

.phase-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 4px;
  height: 1px;
  background: var(--pd-brand);
}

.roadmap-connector {
  display: none;
}


/* ============================================
   SLIDE 11: THE ASK
   ============================================ */
.slide-ask {
  background: var(--pd-bg-warm);
}

.ask-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.ask-col-title {
  font-family: var(--pd-font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--pd-text);
  margin-bottom: 28px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--pd-brand);
}

.ask-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.ask-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.ask-list li svg {
  flex-shrink: 0;
  color: var(--pd-brand);
  margin-top: 2px;
}

.ask-list li span {
  font-size: 0.95rem;
  color: var(--pd-text-secondary);
  line-height: 1.5;
}


/* ============================================
   SLIDE 12: VISION — Von Restorff dark break
   ============================================ */
.slide-vision {
  background: var(--pd-bg-dark);
  text-align: center;
}

.slide-vision .slide-content {
  max-width: 760px;
}

.vision-statement {
  margin-bottom: 48px;
}

.vision-statement p {
  font-family: var(--pd-font-heading);
  font-size: clamp(1.3rem, 2.8vw, 1.75rem);
  font-weight: 400;
  color: #FFFFFF;
  line-height: 1.55;
}

.vision-tagline {
  font-family: var(--pd-font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}


/* ============================================
   SLIDE 13: CONTACT
   ============================================ */
.slide-contact {
  background: var(--pd-bg);
  text-align: center;
}

.contact-brand {
  font-family: var(--pd-font-heading);
  font-size: clamp(1.8rem, 3.5vw, 2.75rem);
  font-weight: 700;
  color: var(--pd-text);
  margin-bottom: 40px;
  line-height: 1.15;
}

.contact-suffix {
  font-weight: 400;
  font-size: 0.45em;
  color: var(--pd-text-muted);
}

.contact-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
  margin-bottom: 48px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.95rem;
  color: var(--pd-text-secondary);
}

.contact-item svg {
  color: var(--pd-brand);
  flex-shrink: 0;
}

.contact-item a {
  color: var(--pd-text-secondary);
  transition: color var(--pd-transition);
  border-bottom: 1px solid transparent;
}

.contact-item a:hover {
  color: var(--pd-brand);
  border-bottom-color: var(--pd-brand);
}

.contact-footer {
  font-size: 0.85rem;
  color: var(--pd-text-muted);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.55;
}


/* ============================================
   KEYBOARD HINT
   ============================================ */
.keyboard-hint {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--pd-font-heading);
  font-size: 0.72rem;
  color: var(--pd-text-muted);
  background: #FFFFFF;
  padding: 8px 16px;
  border: 1px solid var(--pd-border);
  z-index: 90;
  opacity: 1;
  transition: opacity 600ms ease;
  pointer-events: none;
}

.keyboard-hint.hidden {
  opacity: 0;
}

kbd {
  display: inline-block;
  padding: 1px 5px;
  font-family: var(--pd-font-heading);
  font-size: 0.68rem;
  background: var(--pd-bg-alt);
  border: 1px solid var(--pd-border);
}


/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
  .slide { padding: 80px 28px 48px; }
  .deck-nav { padding: 0 24px; }
  .pillars-grid, .pillars-grid-3 { grid-template-columns: 1fr; }
  .comparison-header,
  .comparison-row { grid-template-columns: 1fr; }
  .comparison-cell.muted { display: none; }
  .comparison-col-label.muted { display: none; }
  .traction-columns { grid-template-columns: 1fr; gap: 36px; }
  .market-stats-row { grid-template-columns: repeat(2, 1fr); }
  .market-stat { border-right: none; border-bottom: 1px solid var(--pd-border); }
  .market-stat:last-child { border-bottom: none; }
  .market-tiers { grid-template-columns: 1fr; }
  .tier-card { border-right: none; border-bottom: 1px solid var(--pd-border); }
  .tier-card:last-child { border-bottom: none; }
  .iit-columns { grid-template-columns: 1fr; gap: 24px; }
  .iit-col-divider { display: none; }
  .revenue-grid { grid-template-columns: 1fr; }
  .roadmap-timeline { flex-direction: column; border: none; }
  .roadmap-phase { border-right: none; border: 1px solid var(--pd-border); margin-bottom: -1px; }
  .ask-columns { grid-template-columns: 1fr; gap: 36px; }
  .traction-summary { flex-wrap: wrap; }
  .summary-stat { padding: 24px 20px; }
  .summary-divider { display: none; }
  .deck-nav-dots { display: none; }
}

@media (max-width: 600px) {
  .slide { padding: 72px 20px 36px; }
  .problem-stats { grid-template-columns: 1fr; }
  .traction-row { flex-direction: column; align-items: flex-start; gap: 4px; }
  .title-heading { font-size: clamp(2rem, 8vw, 3rem); }
}


/* ============================================
   SCROLL-TRIGGERED FADE IN
   ============================================ */
.fade-item {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 450ms ease, transform 450ms ease;
}

.fade-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-item:nth-child(2) { transition-delay: 60ms; }
.fade-item:nth-child(3) { transition-delay: 120ms; }
.fade-item:nth-child(4) { transition-delay: 180ms; }
.fade-item:nth-child(5) { transition-delay: 240ms; }
.fade-item:nth-child(6) { transition-delay: 300ms; }