/* ============================================================
   Deck shell — presentation runtime on top of dodo-theme
   ============================================================ */

html, body { height: 100%; }
body {
  background: var(--color-bg-subtle);
  overflow: hidden;
}

/* The stage holds one fixed-size slide centered in the viewport.
   We override slide-stage so scaling is JS-driven (any viewport). */
.stage {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-subtle);
}

.deck {
  width: var(--slide-width);
  height: var(--slide-height);
  /* Pin the deck's geometric center to the viewport center so scaling
     stays symmetric on any window size (flex-centering an overflowing
     fixed-size box drifts in some browsers). nav.js sets the transform. */
  position: absolute;
  top: 50%;
  left: 50%;
  transform-origin: center center;
}

.deck .slide {
  position: absolute;
  inset: 0;
  display: none;
  box-shadow: var(--shadow-lg);
}
.deck .slide.is-active { display: block; }
/* The .is-active rule above wins specificity over .slide--bigword/cover/section's
   own `display: flex`. These per-type overrides restore flex so the slide's
   `align-items: center` actually centers content vertically. */
.deck .slide.slide--bigword.is-active,
.deck .slide.slide--cover.is-active,
.deck .slide.slide--section.is-active { display: flex; }

/* ──── Navigation chrome ─────────────────────────────────── */

.nav {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  align-items: center;
  background: rgba(22, 22, 22, 0.85);
  backdrop-filter: blur(8px);
  color: #fff;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 12px;
  z-index: 100;
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}
.nav.is-visible { opacity: 1; pointer-events: auto; }
.nav button {
  background: transparent;
  border: 0;
  color: #fff;
  font: inherit;
  padding: 4px 10px;
  cursor: pointer;
  border-radius: var(--radius-sm);
}
.nav button:hover { background: rgba(255, 255, 255, 0.15); }
.nav button { display: inline-flex; align-items: center; justify-content: center; min-width: 28px; height: 24px; }
.nav .nav__counter { opacity: 0.7; padding: 0 4px; }
.nav__sep {
  width: 1px; height: 18px; background: rgba(255, 255, 255, 0.18);
  margin: 0 4px;
}
.nav__icon--exit  { display: none; }
.is-fullscreen .nav__icon--enter { display: none; }
.is-fullscreen .nav__icon--exit  { display: inline-block; }

/* In fullscreen we want the deck to fill the viewport edge-to-edge */
.is-fullscreen .stage { background: #000; }
.is-fullscreen.is-idle { cursor: none; }
.is-fullscreen.is-idle .nav { opacity: 0 !important; }

.hint {
  position: fixed;
  bottom: 16px;
  right: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-muted);
  z-index: 100;
  pointer-events: none;
  opacity: 0.6;
}

/* Overview / grid mode */
.deck.is-overview {
  width: auto;
  height: auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
  padding: 24px;
  transform: none !important;
  overflow: auto;
  position: static;
}
.deck.is-overview .slide {
  position: relative;
  display: block !important;
  width: 1280px;
  height: 720px;
  transform: scale(0.25);
  transform-origin: top left;
  margin-bottom: -540px; /* compensates the scaled-down height */
  margin-right: -960px;
  cursor: pointer;
  outline: 2px solid transparent;
}
.deck.is-overview .slide:hover { outline-color: var(--color-accent-purple); }
.stage.is-overview {
  align-items: flex-start;
  justify-content: flex-start;
  overflow: auto;
  position: absolute;
}

/* ──── Slide-type tweaks ─────────────────────────────────── */

/* BIG-WORD: one large phrase, centered, with bold animation.
   Padding overridden to 0 so flex centering uses full slide height. */
.slide--bigword {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 0;
  padding-bottom: 0;
}
.slide--bigword .bw {
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  font-size: 96pt;
  line-height: 1.0;
  letter-spacing: var(--tracking-tight);
  max-width: 92%;
  color: var(--color-text-primary);
}
.slide--bigword .bw--md { font-size: 72pt; }
.slide--bigword .bw--sm { font-size: 56pt; }
.slide--bigword .bw--accent { color: var(--color-accent-purple); }
.slide--bigword .bw--orange { color: var(--color-accent-orange); }
.slide--bigword .bw .strike {
  text-decoration: line-through;
  text-decoration-color: var(--color-accent-orange);
  text-decoration-thickness: 6px;
  color: var(--color-text-disabled);
}
.slide--bigword .bw__arrow {
  display: block;
  font-size: 32pt;
  font-weight: var(--weight-light);
  margin: 24px 0 16px;
  color: var(--color-text-muted);
}
.slide--bigword .bw__sub {
  display: block;
  font-family: var(--font-mono);
  font-size: 18pt;
  font-weight: var(--weight-regular);
  color: var(--color-accent-orange);
  margin-top: 16px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Multi-line BIG-WORD with per-line stagger (replaces 3-4 chain slides) */
.slide--bigword .bw-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: center;
  text-align: center;
}
.slide--bigword .bw-stack > * { display: block; line-height: 1.0; }
/* When a bw is also a stack, kill the container pop-in so the per-line
   stagger reads cleanly. */
.slide.is-active.slide--bigword .bw.bw-stack { animation: fade-in 0.3s ease both; }
.slide.is-active.slide--bigword .bw.bw-stack > * { animation: rise-in 0.5s ease-out both; }
.slide.is-active.slide--bigword .bw.bw-stack > *:nth-child(1) { animation-delay: 0.05s; }
.slide.is-active.slide--bigword .bw.bw-stack > *:nth-child(2) { animation-delay: 0.20s; }
.slide.is-active.slide--bigword .bw.bw-stack > *:nth-child(3) { animation-delay: 0.35s; }
.slide.is-active.slide--bigword .bw.bw-stack > *:nth-child(4) { animation-delay: 0.50s; }

/* TRANSITION: muted big-word with soft accent */
.slide--transition .bw {
  font-weight: var(--weight-light);
  color: var(--color-text-secondary);
  font-size: 64pt;
}

/* IMAGE placeholder — clean card with caption */
.image-card {
  width: 100%;
  height: 78%;
  border-radius: var(--radius-lg);
  background: var(--color-bg-subtle);
  border: 1px dashed var(--color-border-on-white);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-8);
  text-align: center;
}
.image-card__icon {
  font-family: var(--font-mono);
  font-size: 13pt;
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.image-card__title {
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  font-size: 28pt;
  color: var(--color-text-primary);
  line-height: 1.1;
  max-width: 80%;
}
.image-card__sub {
  font-family: var(--font-body);
  font-size: 14pt;
  color: var(--color-text-secondary);
  max-width: 70%;
}
.image-card__corner {
  position: absolute;
  top: var(--space-6);
  right: var(--space-6);
  font-family: var(--font-mono);
  font-size: 11pt;
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.85);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
}
.image-card__caption {
  position: absolute;
  bottom: 8%;
  left: 0; right: 0;
  text-align: center;
  font-family: var(--font-body);
  font-size: 14pt;
  font-style: italic;
  color: var(--color-text-secondary);
}

/* Phone frame for screenshot mocks */
.phones {
  display: flex;
  gap: 56px;
  align-items: center;
  justify-content: center;
}
.phone {
  width: 240px;
  height: 480px;
  border-radius: 28px;
  background: var(--color-bg-subtle);
  border: 2px solid var(--color-text-primary);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.phone::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 18px;
  background: var(--color-text-primary);
  border-radius: 9px;
}
.phone__label {
  position: absolute;
  top: -28px;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 12pt;
  font-weight: var(--weight-semibold);
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
}
.phone__screen {
  margin: 36px 12px 12px;
  flex: 1;
  border-radius: 12px;
  background: linear-gradient(160deg, #fff, #f0f0f0);
  display: flex;
  flex-direction: column;
  padding: 10px;
  gap: 8px;
  overflow: hidden;
}
.phone__row {
  height: 14px;
  background: var(--color-bg-subtle);
  border-radius: 6px;
}
.phone__card {
  height: 60px;
  background: var(--color-pastel-peach);
  border-radius: 10px;
}
.phone__card--mint { background: var(--color-pastel-mint); }
.phone__card--purple { background: var(--color-pastel-purple); }
.phone__card--yellow { background: var(--color-pastel-yellow); }
.phone__hero {
  height: 110px;
  border-radius: 12px;
  background:
    radial-gradient(circle at 30% 30%, var(--color-accent-orange) 0%, var(--color-accent-orange-alt) 40%, transparent 65%),
    linear-gradient(135deg, #2a1a0a, #4a2814);
  position: relative;
}
.phone__hero::after {
  content: 'Drinkit';
  position: absolute;
  bottom: 8px;
  left: 10px;
  font-family: var(--font-decorative);
  font-weight: 500;
  font-size: 14pt;
  color: #fff;
  letter-spacing: 0.02em;
}

/* Real-screenshot phone variant — used when wiring assets/screens/*.png */
.phone--real { background: var(--color-text-primary); }
.phone--real::before { display: none; }   /* hide the CSS notch */
.phone--real .phone__screen {
  margin: 0;
  border-radius: 26px;
  padding: 0;
  background: transparent;
  overflow: hidden;
}
.phone__shot {
  width: 100%;
  height: 100%;
  border-radius: 22px;
  object-fit: cover;
  display: block;
}

/* Code blocks — slight tweaks for slide-scale code */
pre.code-block {
  font-size: 13pt;
  line-height: 1.45;
  padding: var(--space-5) var(--space-6);
  margin: 0;
}
.code-caption {
  font-family: var(--font-mono);
  font-size: 11pt;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 var(--space-3);
}
/* Highlight a line/span to call out a divergence-bug in code compare slides */
.hl-bug {
  background: rgba(255, 84, 1, 0.18);
  outline: 1px solid rgba(255, 84, 1, 0.45);
  padding: 1px 4px;
  border-radius: 3px;
}
/* Same as hl-bug, but purple — "this is the divergence KMP removes"
   (used on the "Remember this code? KMP fixes this." compare slide) */
.hl-fix {
  background: rgba(105, 75, 251, 0.16);
  outline: 1px solid rgba(105, 75, 251, 0.45);
  padding: 1px 4px;
  border-radius: 3px;
}

/* Lightweight, hand-rolled syntax tint */
.tok-k { color: var(--color-accent-purple); font-weight: var(--weight-semibold); }
.tok-s { color: var(--color-accent-orange); }
.tok-c { color: var(--color-text-muted); font-style: italic; }
.tok-n { color: var(--color-accent-blue); }
.tok-t { color: #006d77; }
.tok-a { color: var(--color-text-secondary); }

/* ---- Progressive code highlight (transport reveal slides) ----
   .code-dim flattens the whole snippet to grey; any region wrapped in
   .hl-keep restores its ORIGINAL colours (plain text + each token) and
   goes bolder so it pops — the kept region looks exactly like the
   undimmed code, just heavier; everything else is grey. */
.code-block.code-dim,
.code-block.code-dim .tok-k,
.code-block.code-dim .tok-s,
.code-block.code-dim .tok-c,
.code-block.code-dim .tok-n,
.code-block.code-dim .tok-t,
.code-block.code-dim .tok-a {
  color: var(--color-text-disabled);
  font-weight: var(--weight-regular);
  font-style: normal;
}
.code-block.code-dim .hl-keep { color: var(--color-text-primary); font-weight: var(--weight-bold); }
.code-block.code-dim .hl-keep .tok-k { color: var(--color-accent-purple); font-weight: var(--weight-bold); }
.code-block.code-dim .hl-keep .tok-s { color: var(--color-accent-orange); }
.code-block.code-dim .hl-keep .tok-c { color: var(--color-text-muted); font-style: italic; }
.code-block.code-dim .hl-keep .tok-n { color: var(--color-accent-blue); }
.code-block.code-dim .hl-keep .tok-t { color: #006d77; }
.code-block.code-dim .hl-keep .tok-a { color: var(--color-text-secondary); }

/* Lists at slide scale */
.slide ul.list { font-size: 16pt; line-height: 1.6; }
.slide ol.list { font-size: 16pt; line-height: 1.6; }
.slide ul.list--lg { font-size: 22pt; line-height: 1.55; }

/* Compare layout: bigger headings, accent eyebrow already styled */
.slide--two-col .slide__col h4 {
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  font-size: 22pt;
  margin: 0 0 var(--space-3);
  line-height: 1.2;
}

/* DIAGRAM container */
.diagram-wrap {
  width: 100%;
  height: 88%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.diagram-wrap svg { max-width: 100%; max-height: 100%; }

/* When .slide__body is also .diagram-wrap, drop the 85% max-width
   constraint inherited from slide.css `.slide--content .slide__body`
   so the diagram fills the slide instead of being letterboxed.
   Both selectors carry the same specificity (0,2,0); deck.css loads
   after slide.css, so this rule wins. */
.slide__body.diagram-wrap {
  max-width: 100%;
  width: 100%;
}

/* Replacement for inline <svg> when a diagram is supplied as a PNG.
   Fills the diagram-wrap; aspect ratio preserved via object-fit. */
.diagram-img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
}

/* Section title slides — give them a nicer canvas */
.slide--section {
  background: var(--color-bg);
}
.slide--section .slide__section-eyebrow {
  font-family: var(--font-mono);
  font-size: 14pt;
  color: var(--color-accent-purple);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}
.slide--section .slide__section-title {
  font-size: 52pt;
  font-weight: var(--weight-bold);
  letter-spacing: -0.01em;
  line-height: 1.05;
}
.slide--section .slide__section-rule {
  width: 96px;
  height: 6px;
  background: var(--color-accent-orange);
  margin-top: var(--space-6);
}

/* Outro / cover refinements */
/* Cover (slide 1) + closing slide (114) — identical static pastel blooms. */
.slide--cover,
.bg-cover-blooms {
  background:
    radial-gradient(circle at 88% 12%, var(--color-pastel-peach) 0%, transparent 30%),
    radial-gradient(circle at 12% 92%, var(--color-pastel-purple) 0%, transparent 32%),
    var(--color-bg);
}
.slide--cover .slide__big-title {
  font-size: 64pt;
  max-width: 88%;
  letter-spacing: -0.02em;
}
.slide--cover .slide__big-title em {
  font-style: normal;
  color: var(--color-accent-purple);
}
.slide--cover .slide__big-subtitle {
  font-size: 16pt;
  margin-top: var(--space-6);
  color: var(--color-text-secondary);
}
.slide--cover .cover__brand {
  position: absolute;
  top: var(--slide-pad-top);
  left: var(--slide-pad-left);
  font-family: var(--font-mono);
  font-size: 12pt;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* QR placeholder */
.qr {
  width: 220px;
  height: 220px;
  background:
    repeating-linear-gradient(0deg, var(--color-text-primary) 0, var(--color-text-primary) 8px, transparent 8px, transparent 16px),
    repeating-linear-gradient(90deg, var(--color-text-primary) 0, var(--color-text-primary) 8px, transparent 8px, transparent 16px);
  background-color: var(--color-bg-subtle);
  border-radius: var(--radius-md);
  position: relative;
}
.qr::before, .qr::after, .qr > span {
  content: '';
  position: absolute;
  width: 48px;
  height: 48px;
  border: 8px solid var(--color-text-primary);
  background: var(--color-bg);
}
.qr::before { top: 8px; left: 8px; }
.qr::after  { top: 8px; right: 8px; }
.qr > span  { bottom: 8px; left: 8px; }

/* ──── Animations ─────────────────────────────────────────── */

@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes rise-in {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes pop-in {
  0%   { opacity: 0; transform: scale(0.88); }
  60%  { opacity: 1; transform: scale(1.03); }
  100% { transform: scale(1.0); }
}
@keyframes slide-from-left {
  from { opacity: 0; transform: translateX(-48px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes slide-from-right {
  from { opacity: 0; transform: translateX(48px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes draw-rule {
  from { width: 0; }
  to   { width: 96px; }
}
@keyframes underline-grow {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

.slide.is-active.slide--bigword .bw     { animation: pop-in 0.5s ease-out both; }
.slide.is-active.slide--transition .bw  { animation: fade-in 0.6s ease both; }
.slide.is-active .anim-rise             { animation: rise-in 0.5s ease-out both; }
.slide.is-active .anim-rise-2           { animation: rise-in 0.5s ease-out 0.12s both; }
.slide.is-active .anim-rise-3           { animation: rise-in 0.5s ease-out 0.24s both; }
.slide.is-active .anim-rise-4           { animation: rise-in 0.5s ease-out 0.36s both; }
.slide.is-active .anim-from-left        { animation: slide-from-left 0.5s ease-out both; }
.slide.is-active .anim-from-right       { animation: slide-from-right 0.5s ease-out both; }
.slide.is-active .anim-fade             { animation: fade-in 0.6s ease both; }
.slide.is-active.slide--section .slide__section-rule { animation: draw-rule 0.6s ease-out 0.3s both; }
.slide.is-active.slide--section .slide__section-eyebrow { animation: rise-in 0.4s ease-out both; }
.slide.is-active.slide--section .slide__section-title   { animation: rise-in 0.5s ease-out 0.12s both; }
.slide.is-active.slide--cover .slide__big-title    { animation: rise-in 0.6s ease-out 0.1s both; }
.slide.is-active.slide--cover .slide__big-subtitle { animation: rise-in 0.5s ease-out 0.35s both; }
.slide.is-active .stagger > * { animation: rise-in 0.45s ease-out both; }
.slide.is-active .stagger > *:nth-child(1) { animation-delay: 0.05s; }
.slide.is-active .stagger > *:nth-child(2) { animation-delay: 0.15s; }
.slide.is-active .stagger > *:nth-child(3) { animation-delay: 0.25s; }
.slide.is-active .stagger > *:nth-child(4) { animation-delay: 0.35s; }
.slide.is-active .stagger > *:nth-child(5) { animation-delay: 0.45s; }
.slide.is-active .stagger > *:nth-child(6) { animation-delay: 0.55s; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}

/* ──── Print / PDF export ─────────────────────────────────── */
@media print {
  body { background: #fff; }
  .nav, .hint { display: none !important; }
  .stage { position: static; }
  .deck { transform: none !important; width: auto; height: auto; position: static; top: auto; left: auto; }
  .deck .slide { display: block !important; page-break-after: always; box-shadow: none; }
}

/* ============================================================
   v3 additions
   ============================================================ */

/* ---- Section-title radial-pastel bloom backgrounds ----
   Pair with .slide--bigword or .slide--section section-title slides.
   The radial gradient blooms up from the bottom and fades to white
   so black title text stays high-contrast in the upper half. */
.slide.bg-bloom {
  background: radial-gradient(
    ellipse 80% 60% at 50% 110%,
    var(--bloom-color, var(--color-accent-purple)) 0%,
    color-mix(in srgb, var(--bloom-color, var(--color-accent-purple)) 40%, #fff) 30%,
    #fff 70%
  );
}
.slide.bg-bloom.bloom--purple { --bloom-color: var(--color-accent-purple); }
.slide.bg-bloom.bloom--blue   { --bloom-color: var(--color-pastel-blue-bold, #3366FF); }
.slide.bg-bloom.bloom--orange { --bloom-color: var(--color-accent-orange); }
.slide.bg-bloom.bloom--mint   { --bloom-color: var(--color-pastel-mint-bold, #34D399); }

/* ---- Full-bleed slide (suppresses title chrome + padding) ---- */
.slide.slide--bleed {
  padding: 0;
  overflow: hidden;
}
.slide.slide--bleed .slide__page-num { display: none; }

/* ---- Five-video tile (slide 16 in v3) ---- */
.video-tile {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: row;
  overflow: hidden;
}
.video-tile > video {
  height: 100%;
  width: auto;
  flex: 0 0 auto;
  object-fit: cover;
}

/* ---- Hero side-by-side phones grid (normalizes slides 8-11 in v3) ---- */
.phones-hero {
  display: flex;
  gap: var(--space-8, 32px);
  align-items: center;
  justify-content: center;
  height: 82%;
}
.phones-hero .phone {
  flex: 0 1 auto;
  height: 100%;
}
.phones-hero .phone__screen {
  height: 100%;
  aspect-ratio: 9 / 19.5;
}

/* ---- Caption under a code block (v3 use on slides 50, 51) ---- */
.code-caption-bottom {
  margin-top: var(--space-3, 12px);
  font-size: 11pt;
  color: var(--color-text-secondary, #666);
  font-style: italic;
}

/* ---- Closing-slide contact avatar (v3.1) ---- */
.contacts-avatar {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  margin: 0 0 var(--space-4, 16px);
  box-shadow: var(--shadow-md);
}