/* ============================================================
   VBRC 2026 — Making Internal Business Tools With AI
   ----------------------------------------------------------------
   Visual system: navy ground, gold accent, holographic motion,
   engineering grid, with extra layered atmosphere for stage impact.
   ============================================================ */

/* ---------- 1. Fonts ---------- */
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-display: block;
  src: url("../vendor/fonts/ibm-plex-mono-400.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 600;
  font-display: block;
  src: url("../vendor/fonts/ibm-plex-mono-600.woff2") format("woff2");
}
@font-face {
  font-family: "Space Grotesk";
  font-style: normal;
  font-weight: 700;
  font-display: block;
  src: url("../vendor/fonts/space-grotesk-700.woff2") format("woff2");
}

/* ---------- 2. Design tokens ---------- */
:root {
  /* Color */
  --bg:           #0a2540;
  --bg-deeper:    #061a30;
  --bg-deepest:   #03101e;
  --ink:          #e8f1ff;
  --ink-dim:      rgba(232, 241, 255, 0.7);
  --ink-faint:    rgba(232, 241, 255, 0.4);
  --ink-ghost:    rgba(232, 241, 255, 0.18);
  --grid-major:   rgba(232, 241, 255, 0.10);
  --grid-minor:   rgba(232, 241, 255, 0.04);
  --gold:         #ffd166;
  --gold-bright:  #ffe49a;
  --gold-glow:    rgba(255, 209, 102, 0.45);
  --cyan:         #6ee7ff;
  --cyan-glow:    rgba(110, 231, 255, 0.3);
  --green:        #7fffa8;
  --magenta:      #ff7be0;
  --red:          #ff6b6b;

  /* Rivera Grounds Co accent (used in tool demos) */
  --rg-green:     #4a7c4e;
  --rg-green-dk:  #2d4a30;
  --rg-tan:       #d8c79a;

  /* Type */
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-mono:    "IBM Plex Mono", "JetBrains Mono", monospace;

  /* Animation */
  --ease:    cubic-bezier(0.22, 1, 0.36, 1);
  --ease-back: cubic-bezier(0.34, 1.56, 0.64, 1);
  --d-fast:  200ms;
  --d-base:  400ms;
  --d-slow:  700ms;
}

/* "Projector" mode toggle (P key) — bumps gold sat + lightens navy */
.deck--projector {
  --bg:        #0e2d4a;
  --gold:      #ffdb7a;
  --gold-glow: rgba(255, 219, 122, 0.55);
}

/* ---------- 3. Reset ---------- */
* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: #000;
  color: var(--ink);
  font-family: var(--font-display);
  overflow: hidden;
  height: 100%;
  width: 100%;
}

/* ---------- 4. Deck shell + scaling ---------- */
.deck {
  position: fixed;
  inset: 0;
  background: var(--bg);
  overflow: hidden;
}

/* The 1920×1080 stage. Scaled with CSS variable set by JS to fit viewport. */
.stage {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 1920px;
  height: 1080px;
  transform: translate(-50%, -50%) scale(var(--scale, 1));
  transform-origin: center center;
}

/* ============================================================
   5. BACKGROUND ATMOSPHERE
   ----------------------------------------------------------------
   Three layers, all live OUTSIDE the slide stack so motion is
   continuous regardless of slide changes:
     - holographic conic wash (slow rotate)
     - vignette + noise overlay
     - engineering grid
     - drifting particle field (gold dust)
   ============================================================ */
.bg-stage {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

/* Layer 1: holographic wash */
.bg-stage::before {
  content: "";
  position: absolute;
  inset: -30%;
  background: conic-gradient(
    from 0deg at 50% 50%,
    rgba(120, 200, 255, 0.18),
    rgba(255, 210, 120, 0.12),
    rgba(180, 140, 255, 0.18),
    rgba(120, 255, 220, 0.12),
    rgba(120, 200, 255, 0.18)
  );
  filter: blur(80px);
  animation: holo 32s linear infinite;
  will-change: transform;
}
@keyframes holo {
  to { transform: rotate(360deg); }
}

/* Layer 2: engineering grid (major 80px, minor 16px) */
.bg-stage::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-major) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-major) 1px, transparent 1px),
    linear-gradient(var(--grid-minor) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-minor) 1px, transparent 1px);
  background-size: 80px 80px, 80px 80px, 16px 16px, 16px 16px;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 90%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 90%);
}

/* Layer 3: vignette */
.bg-vignette {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background:
    radial-gradient(ellipse at center, transparent 40%, rgba(0,0,0,0.55) 100%);
}

/* Layer 4: drifting gold-dust particles (CSS-only) */
.bg-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}
.bg-particles span {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--gold);
  opacity: 0;
  filter: blur(0.5px) drop-shadow(0 0 6px var(--gold-glow));
  animation: drift linear infinite;
}
@keyframes drift {
  0%   { transform: translateY(0) translateX(0);   opacity: 0; }
  10%  { opacity: 0.7; }
  90%  { opacity: 0.7; }
  100% { transform: translateY(-1200px) translateX(60px); opacity: 0; }
}

/* ---------- 6. Slide stack ---------- */
/* Scoped to .stage > .slide so we don't accidentally match Reveal.js's
   internal .reveal-viewport, which gets a "slide" class added in embedded
   mode and would otherwise inherit opacity:0 + pointer-events:none. */
.stage > .slide {
  position: absolute;
  inset: 0;
  width: 1920px;
  height: 1080px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 380ms var(--ease);
  z-index: 2;
}
.stage > .slide.is-active {
  opacity: 1;
  pointer-events: auto;
  z-index: 3;
}
.stage > .slide.is-leaving {
  opacity: 0;
  z-index: 2;
}

/* ---------- 7. Slide chrome ---------- */
.corner {
  position: absolute;
  width: 18px;
  height: 18px;
  border: 1.2px solid var(--ink);
  z-index: 5;
}
.corner.tl { top: 28px;    left: 28px;    border-right: none; border-bottom: none; }
.corner.tr { top: 28px;    right: 28px;   border-left: none;  border-bottom: none; }
.corner.bl { bottom: 28px; left: 28px;    border-right: none; border-top: none;    }
.corner.br { bottom: 28px; right: 28px;   border-left: none;  border-top: none;    }

.meta-row {
  position: absolute;
  left: 80px;
  right: 80px;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 18px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.meta-row.meta-top { top: 56px; }
.meta-row.meta-bot {
  bottom: 56px;
  border-top: 1px dashed var(--ink-ghost);
  padding-top: 14px;
  font-size: 16px;
  color: var(--ink-faint);
}

.fig-label {
  position: absolute;
  left: 80px;
  top: 140px;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  opacity: 0.9;
}

/* HEADLINE */
.headline {
  position: absolute;
  left: 80px;
  right: 80px;
  top: 200px;
  margin: 0;
  padding: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 130px;
  line-height: 0.92;
  letter-spacing: -0.03em;
  color: var(--ink);
  max-width: 1700px;
}
.headline .gold { color: var(--gold); }
.headline .cyan { color: var(--cyan); }
.headline.headline--xl { font-size: 200px; }
.headline.headline--lg { font-size: 160px; }
.headline.headline--md { font-size: 100px; }
.headline.headline--sm { font-size: 72px; }

.subhead {
  position: absolute;
  left: 80px;
  right: 80px;
  font-family: var(--font-mono);
  font-size: 36px;
  color: var(--gold);
  letter-spacing: 0.01em;
  line-height: 1.4;
}

.content {
  position: absolute;
  left: 80px;
  right: 80px;
  top: 520px;
  bottom: 140px;
}
.content--low { top: 620px; }
.content--high { top: 420px; }

/* ---------- 8. Wireframe nodes ---------- */
.wnode {
  display: inline-block;
  border: 1.2px solid var(--ink);
  background: rgba(10, 37, 64, 0.85);
  color: var(--ink);
  font-family: var(--font-mono);
  text-align: center;
  position: relative;
  vertical-align: top;
}
.wnode b {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--gold);
  letter-spacing: -0.01em;
}
.wnode span {
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-dim);
}
.wnode--sm { padding: 14px 22px; min-width: 140px; }
.wnode--sm b    { font-size: 24px; margin-bottom: 4px; }
.wnode--sm span { font-size: 16px; }
.wnode--md { padding: 22px 32px; min-width: 220px; }
.wnode--md b    { font-size: 32px; margin-bottom: 6px; }
.wnode--md span { font-size: 20px; }
.wnode--lg { padding: 32px 44px; min-width: 320px; }
.wnode--lg b    { font-size: 44px; margin-bottom: 8px; }
.wnode--lg span { font-size: 22px; }
.wnode--xl { padding: 44px 60px; min-width: 440px; }
.wnode--xl b    { font-size: 64px; margin-bottom: 12px; }
.wnode--xl span { font-size: 26px; }

.wnode.plain b { color: var(--ink); }
.wnode.primary {
  border-color: var(--gold);
  box-shadow: 0 0 30px var(--gold-glow), inset 0 0 20px rgba(255, 209, 102, 0.05);
}
.wnode.primary b { color: var(--gold); }

.wnode.pulse::before {
  content: "";
  position: absolute;
  inset: -1.2px;
  border: 1.2px solid var(--gold);
  pointer-events: none;
  animation: pulseBox 2.4s ease-out infinite;
}
@keyframes pulseBox {
  0%   { opacity: 0.9; transform: scale(1); }
  100% { opacity: 0;   transform: scale(1.18); }
}

/* ---------- 9. Arrows ---------- */
.arrow-wrap {
  position: relative;
  display: inline-block;
  vertical-align: middle;
}
.arrow-h { height: 36px; }
.arrow-v { width: 36px; }
.arrow-wrap svg { display: block; width: 100%; height: 100%; overflow: visible; }
.ants {
  fill: none;
  stroke: var(--ink);
  stroke-width: 1.2;
  stroke-dasharray: 6 4;
  animation: march 1.2s linear infinite;
}
@keyframes march { to { stroke-dashoffset: -20; } }
.arrow-head { fill: var(--ink); }
.flow-dot {
  fill: var(--gold);
  filter: drop-shadow(0 0 6px var(--gold));
}

/* ---------- 10. Terminal mockup ---------- */
.terminal {
  display: block;
  background: var(--bg-deeper);
  border: 1.5px solid var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 36px;
  line-height: 1.55;
  color: var(--ink);
  position: relative;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
  overflow: hidden;
  border-radius: 6px;
}
.terminal__chrome {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 28px;
  border-bottom: 1px solid var(--ink-ghost);
  background: rgba(255, 255, 255, 0.02);
}
.terminal__chrome i {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  display: block;
}
.terminal__chrome i:nth-child(1) { background: #ff5f57; }
.terminal__chrome i:nth-child(2) { background: #febc2e; }
.terminal__chrome i:nth-child(3) { background: #28c840; }
.terminal__chrome span {
  margin-left: auto;
  font-size: 18px;
  color: var(--ink-faint);
  letter-spacing: 0.05em;
}
.terminal__body {
  padding: 32px 44px;
  min-height: 240px;
  position: relative;
}
.terminal__prompt { color: var(--cyan); display: block; margin-bottom: 18px; }
.terminal__stream { color: var(--ink); display: block; white-space: pre-wrap; }
.terminal__stream .gold  { color: var(--gold); }
.terminal__stream .ok    { color: var(--green); }
.terminal__stream .err   { color: var(--red); }
.terminal__stream .dim   { color: var(--ink-faint); }
.terminal__stream .flash { text-shadow: 0 0 12px var(--gold-glow); }
.terminal__static {
  color: var(--ink-dim);
  display: none;
}
.deck--no-typed .terminal__static { display: block; }
.typed-cursor {
  display: inline-block;
  color: var(--ink);
  animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ============================================================
   11. DEVICE FRAME — used to embed live demos as if running on
   a real laptop/browser. The frame itself is decorative; the
   inner area holds an iframe or the tool markup directly.
   ============================================================ */
.device {
  position: absolute;
  inset: 480px 80px 200px 80px;
  background: linear-gradient(180deg, #0c2c50 0%, #061a30 100%);
  border: 1.5px solid var(--ink-faint);
  border-radius: 14px;
  box-shadow:
    0 50px 120px rgba(0, 0, 0, 0.7),
    0 0 0 1px rgba(255, 255, 255, 0.04) inset,
    0 -8px 40px rgba(110, 231, 255, 0.08) inset;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.device__chrome {
  height: 56px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 22px;
  border-bottom: 1px solid var(--ink-ghost);
  background: rgba(255, 255, 255, 0.02);
  flex-shrink: 0;
}
.device__chrome i {
  width: 14px; height: 14px; border-radius: 50%;
}
.device__chrome i:nth-child(1) { background: #ff5f57; }
.device__chrome i:nth-child(2) { background: #febc2e; }
.device__chrome i:nth-child(3) { background: #28c840; }
.device__url {
  flex: 1;
  margin: 0 22px;
  height: 32px;
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--ink-ghost);
  display: flex;
  align-items: center;
  padding: 0 14px;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--ink-dim);
  letter-spacing: 0.02em;
  max-width: 720px;
}
.device__url::before {
  content: "🔒";
  font-size: 12px;
  margin-right: 10px;
  filter: grayscale(0.8);
}
.device__body {
  flex: 1;
  background: #fff;
  position: relative;
  overflow: hidden;
}
.device__body iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* Glow ring around the active device — pulses subtly */
.device::after {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: 14px;
  pointer-events: none;
  box-shadow: 0 0 60px var(--gold-glow);
  opacity: 0.4;
  animation: deviceGlow 4s ease-in-out infinite;
}
@keyframes deviceGlow {
  0%, 100% { opacity: 0.25; }
  50%      { opacity: 0.55; }
}

/* ============================================================
   12. SLIDE-SPECIFIC LAYOUTS
   ============================================================ */

/* Cold open: full-bleed Opossums embed */
.cold-open {
  position: absolute;
  inset: 0;
  background: #000;
}
.cold-open iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

/* Title slide */
.title-stage {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 120px 80px;
}
.title-eyebrow {
  font-family: var(--font-mono);
  font-size: 22px;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 40px;
  position: relative;
}
.title-eyebrow::before,
.title-eyebrow::after {
  content: "";
  display: inline-block;
  width: 80px;
  height: 1px;
  background: var(--gold);
  vertical-align: middle;
  margin: 0 24px;
  opacity: 0.6;
}
.title-headline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 180px;
  line-height: 0.94;
  letter-spacing: -0.04em;
  margin: 0 0 40px;
  background: linear-gradient(180deg, #fff 0%, #b8d4ff 60%, #6e9ace 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.title-headline .gold {
  background: linear-gradient(180deg, var(--gold-bright) 0%, var(--gold) 50%, #c79a3a 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.title-sub {
  font-family: var(--font-mono);
  font-size: 32px;
  color: var(--ink-dim);
  letter-spacing: 0.05em;
  margin-bottom: 64px;
}
.title-byline {
  font-family: var(--font-mono);
  font-size: 22px;
  color: var(--ink-faint);
  letter-spacing: 0.25em;
  text-transform: uppercase;
}

/* Anecdote slide (the Christmas Powerpoint Night line) */
.anecdote {
  position: absolute;
  inset: 200px 120px 140px 120px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 48px;
}
.anecdote-quote {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 96px;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.anecdote-quote .gold { color: var(--gold); }
.anecdote-attribution {
  font-family: var(--font-mono);
  font-size: 26px;
  color: var(--ink-faint);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* Two-mode comparison: chat vs build */
.split-stage {
  position: absolute;
  inset: 480px 80px 120px 80px;
  display: grid;
  grid-template-columns: 1fr 60px 1fr;
  gap: 0;
  align-items: stretch;
}
.split-card {
  border: 1.2px solid var(--ink-ghost);
  background: rgba(10, 37, 64, 0.55);
  padding: 44px 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}
.split-card.is-cold {
  opacity: 0.55;
}
.split-card.is-hero {
  border-color: var(--gold);
  box-shadow:
    0 0 40px var(--gold-glow),
    inset 0 0 60px rgba(255, 209, 102, 0.04);
}
.split-card.is-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top right, rgba(255, 209, 102, 0.12), transparent 60%);
  pointer-events: none;
}
.split-tag {
  font-family: var(--font-mono);
  font-size: 20px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 16px;
}
.split-card.is-hero .split-tag { color: var(--gold); }
.split-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 72px;
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 28px;
}
.split-body {
  font-family: var(--font-mono);
  font-size: 28px;
  line-height: 1.5;
  color: var(--ink-dim);
}
.split-mid {
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 56px;
  font-weight: 700;
  color: var(--ink-dim);
  letter-spacing: -0.02em;
}

/* Subscriptions stack — the "you only use 5%" framing slide */
.subs-stack {
  position: absolute;
  inset: 500px 80px 120px 80px;
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 60px;
}
.subs-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-self: stretch;
  justify-content: center;
}
.sub-row {
  display: grid;
  grid-template-columns: 220px 1fr 130px;
  align-items: center;
  gap: 28px;
  font-family: var(--font-mono);
  font-size: 26px;
  color: var(--ink);
  padding: 14px 24px;
  border: 1px dashed var(--ink-ghost);
  background: rgba(10, 37, 64, 0.5);
}
.sub-row .name {
  font-weight: 600;
  letter-spacing: -0.005em;
  white-space: nowrap;
}
.sub-row .price {
  text-align: right;
  color: var(--gold);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  font-size: 28px;
  white-space: nowrap;
}
.sub-row .feature {
  color: var(--ink-faint);
  font-size: 19px;
  font-style: italic;
  line-height: 1.35;
}
.sub-row .feature em {
  color: var(--ink-dim);
  font-style: italic;
}
.subs-tally {
  align-self: center;
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: 0 0 0 40px;
  border-left: 1px dashed var(--ink-ghost);
}
.subs-tally-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 200px;
  color: var(--gold);
  line-height: 0.9;
  letter-spacing: -0.04em;
  text-shadow: 0 0 60px var(--gold-glow);
}
.subs-tally-label {
  font-family: var(--font-mono);
  font-size: 24px;
  color: var(--ink-dim);
  letter-spacing: 0.04em;
  line-height: 1.4;
}
.subs-tally-label.is-question {
  color: var(--gold);
  font-style: italic;
}

/* Demo caption (under each device) */
.demo-caption {
  position: absolute;
  left: 80px;
  right: 80px;
  bottom: 110px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--ink-faint);
  letter-spacing: 0.05em;
}
.demo-caption .replaces {
  color: var(--gold);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.demo-caption .build-time {
  font-variant-numeric: tabular-nums;
  color: var(--ink-dim);
}
.demo-caption .build-time::before {
  content: "BUILT IN ";
  color: var(--gold);
  font-weight: 600;
  margin-right: 6px;
}

/* ============================================================
   DEMO INTRO SLIDE — title card before each demo.
   No device. Just headline, "replaces" line, build time.
   ============================================================ */
.slide--demo-intro .demo-intro-stage {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  text-align: left;
  padding: 0 120px;
}
.slide--demo-intro .demo-intro-card {
  max-width: 1500px;
  display: flex;
  flex-direction: column;
  gap: 56px;
}
.slide--demo-intro .demo-intro-eyebrow {
  display: flex;
  align-items: center;
  gap: 24px;
  font-family: var(--font-mono);
  font-size: 22px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
}
.slide--demo-intro .demo-intro-eyebrow::before {
  content: "";
  width: 64px;
  height: 1px;
  background: var(--gold);
  opacity: 0.6;
}
.slide--demo-intro .demo-intro-headline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 160px;
  line-height: 0.92;
  letter-spacing: -0.03em;
  margin: 0;
  color: var(--ink);
}
.slide--demo-intro .demo-intro-headline .gold { color: var(--gold); }
.slide--demo-intro .demo-intro-meta {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: end;
  padding-top: 32px;
  border-top: 1px dashed var(--ink-ghost);
  font-family: var(--font-mono);
  font-size: 24px;
  color: var(--ink-dim);
  letter-spacing: 0.04em;
}
.slide--demo-intro .demo-intro-meta .replaces {
  color: var(--gold);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 22px;
}
.slide--demo-intro .demo-intro-meta .built {
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  text-align: right;
}
.slide--demo-intro .demo-intro-meta .built::before {
  content: "BUILT IN ";
  color: var(--gold);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: 0.18em;
  margin-right: 8px;
}
.slide--demo-intro .demo-intro-meta .next-hint {
  grid-column: 1 / -1;
  margin-top: 18px;
  font-size: 16px;
  color: var(--ink-faint);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

/* ============================================================
   TOOL SLIDE — pure demo, no chrome, no atmosphere.
   The iframe fills the entire slide; everything else hides.
   ============================================================ */
.slide--tool {
  background: #0a1628;
}
.slide--tool .tool-stage {
  position: absolute;
  inset: 0;
  display: block;
}
.slide--tool .tool-stage iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
  background: #fff;
}
/* Tiny corner labels — sit at the BOTTOM so they don't fight with the
   tool's own header band at the top. */
.slide--tool .tool-tag {
  position: absolute;
  bottom: 14px;
  left: 18px;
  z-index: 5;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.32em;
  color: rgba(255, 255, 255, 0.55);
  text-transform: uppercase;
  pointer-events: none;
  background: rgba(10, 22, 40, 0.65);
  padding: 4px 10px;
  border-radius: 4px;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.slide--tool .tool-tag-r {
  position: absolute;
  bottom: 14px;
  right: 18px;
  z-index: 5;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.32em;
  color: rgba(255, 255, 255, 0.45);
  text-transform: uppercase;
  pointer-events: none;
  background: rgba(10, 22, 40, 0.65);
  padding: 4px 10px;
  border-radius: 4px;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

/* ============================================================
   Per-tool callouts — float over the iframe pointing at the
   1-2 things the audience needs to notice. Pacing fix: presenter
   doesn't have to narrate every button.
   ============================================================ */
.slide--tool .tool-callouts {
  position: absolute;
  inset: 0;
  pointer-events: none;   /* never block iframe clicks */
  z-index: 8;             /* above iframe, below tool-tag */
}
.callout {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 11px 18px 11px 12px;
  background: rgba(8, 22, 41, 0.92);
  border: 1.5px solid var(--gold);
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 17px;
  color: var(--cream);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5),
              0 0 0 4px rgba(255, 220, 100, 0.06);
  white-space: nowrap;
  letter-spacing: 0.005em;
  opacity: 0;
  transform: translateY(8px);
  animation: callout-in 700ms cubic-bezier(0.2, 0.8, 0.3, 1) forwards;
}
.callout__num {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--gold);
  color: #0a1628;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0;
  box-shadow: 0 0 18px rgba(255, 220, 100, 0.35);
}
.callout__label {
  font-style: italic;
  font-weight: 500;
}
.callout__label em {
  font-style: normal;
  color: var(--gold);
  font-weight: 600;
}
@keyframes callout-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Position presets — placed near where the relevant UI sits
   inside the iframe. Animate-in delay creates a 1-2 cadence. */
.callout--tl  { top: 88px;  left: 28px;  animation-delay: 360ms; }
.callout--tr  { top: 88px;  right: 28px; animation-delay: 480ms; }
.callout--ml  { top: 50%;   left: 28px;  transform: translateY(calc(-50% + 8px)); animation-delay: 360ms; }
.callout--mr  { top: 50%;   right: 28px; transform: translateY(calc(-50% + 8px)); animation-delay: 480ms; }
.callout--bl  { bottom: 70px; left: 28px;  animation-delay: 600ms; }
.callout--br  { bottom: 70px; right: 28px; animation-delay: 720ms; }
.callout--ml.is-shown,
.callout--mr.is-shown { transform: translateY(-50%); }

/* When the animation completes, lock translateY at 0 (or -50% for mid). */
.callout--ml,
.callout--mr {
  animation-name: callout-in-mid;
}
@keyframes callout-in-mid {
  from { opacity: 0; transform: translateY(calc(-50% + 8px)); }
  to   { opacity: 1; transform: translateY(-50%); }
}

/* Subtle directional line drawn from the callout's inside edge inward,
   to gesture toward the UI region. CSS-only, decorative. */
.callout::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 32px;
  height: 1.5px;
  background: linear-gradient(to var(--callout-arrow-dir, right),
              var(--gold) 0%, var(--gold) 60%, transparent 100%);
  transform: translateY(-50%);
}
.callout--tl::after,
.callout--ml::after,
.callout--bl::after { right: -36px; --callout-arrow-dir: right; }
.callout--tr::after,
.callout--mr::after,
.callout--br::after { left: -36px;  --callout-arrow-dir: left; }
.callout--tr::after,
.callout--mr::after,
.callout--br::after {
  background: linear-gradient(to left,
              var(--gold) 0%, var(--gold) 60%, transparent 100%);
}

/* Hide background atmosphere when a tool slide is active.
   The background-stage layers live OUTSIDE .slide so we use sibling
   class on .deck (set by JS) to suppress them only on tool slides. */
.deck--on-tool .bg-particles,
.deck--on-tool .bg-vignette {
  opacity: 0;
  transition: opacity 200ms var(--ease);
}
.deck--on-tool .bg-stage::before {
  opacity: 0.25;
  transition: opacity 200ms var(--ease);
}
.deck--on-tool .bg-stage::after {
  opacity: 0;
  transition: opacity 200ms var(--ease);
}

/* Single-use software interlude */
.singleuse-stage {
  position: absolute;
  inset: 500px 120px 140px 120px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: stretch;
}
.singleuse-card {
  border: 1.2px solid var(--ink-ghost);
  background: rgba(10, 37, 64, 0.5);
  padding: 44px 50px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.singleuse-tag {
  font-family: var(--font-mono);
  font-size: 22px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 18px;
}
.singleuse-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 60px;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 28px;
}
.singleuse-body {
  font-family: var(--font-mono);
  font-size: 24px;
  line-height: 1.5;
  color: var(--ink-dim);
}

/* Closing slide */
.close-stage {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  text-align: center;
}
.close-headline {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 220px;
  line-height: 0.94;
  letter-spacing: -0.04em;
  background: linear-gradient(180deg, #fff 0%, var(--gold-bright) 60%, var(--gold) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 0;
}
.close-sub {
  margin-top: 56px;
  font-family: var(--font-mono);
  font-size: 32px;
  color: var(--ink-dim);
  letter-spacing: 0.1em;
}

/* QR + share slide */
.share-stage {
  position: absolute;
  inset: 200px 80px 140px 80px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.qr-frame {
  position: relative;
  display: grid;
  place-items: center;
  padding: 40px;
  justify-self: center;
}
.qr-frame .qr-bracket {
  position: absolute;
  width: 32px;
  height: 32px;
  border: 2px solid var(--gold);
}
.qr-frame .qr-bracket.tl { top: 0; left: 0; border-right: none; border-bottom: none; }
.qr-frame .qr-bracket.tr { top: 0; right: 0; border-left: none; border-bottom: none; }
.qr-frame .qr-bracket.bl { bottom: 0; left: 0; border-right: none; border-top: none; }
.qr-frame .qr-bracket.br { bottom: 0; right: 0; border-left: none; border-top: none; }
.qr-img {
  width: 480px; height: 480px;
  background: #fff;
  padding: 24px;
}
.share-info {
  font-family: var(--font-display);
}
.share-info .lead {
  font-family: var(--font-mono);
  font-size: 22px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 24px;
}
.share-info h2 {
  margin: 0 0 24px;
  font-size: 84px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
}
.share-info .url {
  font-family: var(--font-mono);
  font-size: 32px;
  color: var(--cyan);
  word-break: break-all;
}

/* Boundary / caveat slide — three cards with cautionary feel */
.caveat-stack {
  position: absolute;
  inset: 460px 80px 220px 80px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.caveat-card {
  border: 1.2px solid var(--ink-ghost);
  background: rgba(10, 37, 64, 0.55);
  padding: 30px 32px 28px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  overflow: hidden;
}
.caveat-card::before {
  content: "";
  position: absolute;
  left: 0; top: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--gold) 0%, transparent 100%);
  opacity: 0.6;
}
.caveat-num {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.3em;
  color: var(--gold);
  font-weight: 600;
}
.caveat-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 38px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.caveat-body {
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink-dim);
  margin: 0;
}
.caveat-body em {
  color: var(--gold);
  font-style: normal;
  font-weight: 600;
}
.caveat-aside {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink-faint);
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed rgba(255, 255, 255, 0.12);
  font-style: italic;
}
.caveat-aside em {
  color: var(--gold);
  font-style: normal;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 11px;
}
.caveat-summary {
  position: absolute;
  left: 80px;
  right: 80px;
  bottom: 110px;
  text-align: center;
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 600;
  color: var(--ink-dim);
  letter-spacing: -0.005em;
  padding: 18px 32px;
  border-top: 1px dashed var(--ink-ghost);
}
.caveat-summary strong {
  color: var(--gold);
  font-weight: 700;
}

/* Privacy / how-to slide */
.howto-stack {
  position: absolute;
  inset: 500px 120px 120px 120px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  justify-content: center;
}
.howto-row {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 32px;
  align-items: center;
  padding: 18px 32px;
  border: 1.2px solid var(--ink-ghost);
  background: rgba(10, 37, 64, 0.55);
}
.howto-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 48px;
  color: var(--gold);
  line-height: 1;
  letter-spacing: -0.02em;
}
.howto-text {
  font-family: var(--font-mono);
  font-size: 22px;
  color: var(--ink);
  line-height: 1.5;
}
.howto-text strong { color: var(--gold); font-weight: 600; }
.howto-text .dim {
  display: block;
  color: var(--ink-faint);
  margin-top: 4px;
  font-size: 18px;
}

/* ---------- 13. Black-out overlay (B key) ---------- */
.deck--black::after {
  content: "";
  position: fixed;
  inset: 0;
  background: #000;
  z-index: 9999;
}

/* ---------- 13b. Cinematic blackout transition ----------
   Used by deckAPI.blackoutTransition() to bridge between sequences with
   a "fade to black, hold, fade back up" sequence. Driven by the
   --blackout-fade-ms variable which the JS sets per-phase.
*/
.deck::before {
  content: "";
  position: fixed;
  inset: 0;
  background: #000;
  z-index: 9000;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--blackout-fade-ms, 800ms) var(--ease);
}
.deck--blackout::before {
  opacity: 1;
  pointer-events: auto;
}

/* ============================================================
   BRIDGE SLIDE (s16, the anecdote)
   --------------------------------------------------------------
   Quiet "lights up" moment after the cold-open blackout. No deck
   chrome, dimmed atmosphere, bespoke entrance animation, and a
   subtle ambient glow behind the text so the slide doesn't feel
   flat after the cinematic cold open.
   ============================================================ */
.slide--bridge {
  background: var(--bg);
  position: absolute;
  overflow: hidden;
}

/* Soft radial glow drifting behind the text — establishes depth without
   competing with the words. Independent layer that fades + breathes. */
.slide--bridge .bridge-glow {
  position: absolute;
  inset: -10%;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(255, 209, 102, 0.10), transparent 55%),
    radial-gradient(ellipse at 70% 60%, rgba(110, 231, 255, 0.06), transparent 60%);
  filter: blur(40px);
  opacity: 0;
  pointer-events: none;
  z-index: 0;
}
.slide--bridge.is-active .bridge-glow {
  animation: bridgeGlowIn 1600ms var(--ease) 200ms forwards,
             bridgeGlowDrift 18s ease-in-out 2s infinite;
}
@keyframes bridgeGlowIn {
  to { opacity: 1; }
}
@keyframes bridgeGlowDrift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50%      { transform: translate(2%, -2%) scale(1.05); }
}

/* Lift the anecdote above the glow */
.slide--bridge .anecdote {
  position: relative;
  z-index: 1;
}

/* Line-by-line entrance — each line slides up + fades in with a delay
   that gives the audience time to read it. */
.slide--bridge .anecdote-quote .line {
  display: block;
  opacity: 0;
  transform: translateY(18px);
  filter: blur(4px);
}
.slide--bridge.is-active .anecdote-quote .line {
  animation: bridgeLineIn 1100ms var(--ease) forwards;
}
.slide--bridge.is-active .anecdote-quote .line:nth-child(1) { animation-delay: 600ms; }
.slide--bridge.is-active .anecdote-quote .line:nth-child(2) { animation-delay: 1200ms; }
.slide--bridge.is-active .anecdote-quote .line:nth-child(3) { animation-delay: 2100ms; }
.slide--bridge.is-active .anecdote-quote .line:nth-child(4) { animation-delay: 2900ms; }
@keyframes bridgeLineIn {
  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

/* Pulsing gold highlight — for "the tools for the job", the punchline */
.slide--bridge .pulse-gold {
  display: inline-block;
  position: relative;
  text-shadow: 0 0 0 transparent;
  animation: bridgePulse 2.6s ease-in-out 4500ms infinite;
}
@keyframes bridgePulse {
  0%, 100% {
    text-shadow: 0 0 0 transparent;
    transform: translateZ(0) scale(1);
  }
  50% {
    text-shadow:
      0 0 24px var(--gold-glow),
      0 0 56px rgba(255, 209, 102, 0.22),
      0 0 96px rgba(255, 209, 102, 0.08);
    transform: translateZ(0) scale(1.015);
  }
}

/* Keep the deck's atmosphere dimmed while we're on the bridge slide so
   the lights-up after the blackout feels gentle rather than jolting. */
.deck--on-bridge .bg-stage,
.deck--on-bridge .bg-particles,
.deck--on-bridge .bg-vignette {
  opacity: 0;
  transition: opacity 800ms var(--ease);
}

/* ---------- 14. Elapsed-time indicator (T key) ---------- */
.timer {
  position: fixed;
  bottom: 8px;
  right: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: rgba(255, 255, 255, 0.18);
  z-index: 10;
  letter-spacing: 0.1em;
  display: none;
  pointer-events: none;
}
.deck--timer .timer { display: block; }

/* ---------- 15. Source-view easter egg (S key) ---------- */
.deck--source .source-overlay {
  display: block;
}
.source-overlay {
  display: none;
  position: fixed;
  inset: 40px;
  background: rgba(3, 16, 30, 0.96);
  border: 1px solid var(--gold);
  z-index: 9998;
  padding: 40px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--cyan);
  overflow: auto;
  box-shadow: 0 0 80px var(--gold-glow);
}
.source-overlay pre {
  white-space: pre-wrap;
  margin: 0;
  line-height: 1.5;
}


/* ============================================================
   COLD OPEN — Opossums sequence
   --------------------------------------------------------------
   Migrated from the standalone Opossums file. Class names all
   prefixed with `cold-` to avoid collisions with deck classes.
   Variables namespaced under `--cold-*`.
   Top-level overlays (#cold-flash, #cold-ticker, #cold-vignette,
   #cold-start-overlay, #cold-audio) are siblings of .stage inside
   .deck. They display only when .deck has class .deck--cold-open.
   ============================================================ */

/* Scope cold-open variables to the deck while in cold-open mode */
.deck.deck--cold-open {
  --cold-black: #07070a;
  --cold-ink:   #0e0e14;
  --cold-white: #ffffff;
  --cold-green: #2bff00;
  --cold-amber: #ffb000;
  --cold-cyan:  #00e5ff;
  --cold-red:   #ff2a2a;
  --cold-pink:  #ff6bda;
  --beat-ms: 488ms;
  --bar-ms: 1952ms;
  --ticker-h: 44px;
  --font-head: "Impact", "Haettenschweiler", "Arial Narrow Bold", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SFMono-Regular", "Menlo", "Consolas", monospace;
}

/* Suppress the deck's atmosphere on cold-open mode (mirrors deck--on-tool) */
.deck--cold-open .bg-stage,
.deck--cold-open .bg-particles,
.deck--cold-open .bg-vignette {
  opacity: 0;
  transition: opacity 250ms var(--ease);
}

/* Hide overlays unless we're in cold-open mode. Each element keeps its
   own display value when shown — explicitly listed so we don't accidentally
   set #cold-start-overlay to `block` (its centering relies on flex). */
#cold-vignette,
#cold-flash,
#cold-ticker,
#cold-start-overlay {
  display: none;
}
.deck--cold-open #cold-vignette  { display: block; }
.deck--cold-open #cold-flash     { display: block; }
.deck--cold-open #cold-ticker    { display: flex; }
.deck--cold-open #cold-start-overlay { display: flex; }
#cold-audio { display: none; } /* always hidden visually */

/* ----- Slide-cold base ----- */
.slide--cold {
  background: var(--cold-black);
  color: var(--cold-white);
  font-family: var(--font-body);
  letter-spacing: 0.02em;
  position: absolute;
  inset: 0;
  width: 1920px;
  height: 1080px;
  overflow: hidden;
}

.slide--cold h1, .slide--cold h2, .slide--cold h3 {
  font-family: var(--font-head);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin: 0;
  color: var(--cold-white);
  text-shadow: 0 14px 40px rgba(0,0,0,0.75);
  line-height: 0.92;
}
.slide--cold h1 { font-size: 8em; }
.slide--cold h2 { font-size: 5.5em; }
.slide--cold h3 { font-size: 3em; }
.slide--cold p  { font-size: 1.9em; color: var(--cold-white); text-shadow: 0 8px 26px rgba(0,0,0,0.7); }

/* Default fragment hidden state */
.slide--cold .cold-fragment:not(.visible) { opacity: 0; visibility: hidden; }


/* ============================================================
   Opossums cold-open — original styles, inlined globally.
   .opossum-host wraps the cold-open content inside slide 1.
   ============================================================ */

/* Slot the host into slide 1 and give it a positioning context. */

:root {
      --cold-black: #07070a;
      --cold-ink:   #0e0e14;
      --cold-white: #ffffff;
      --cold-green: #2bff00;
      --cold-amber: #ffb000;
      --cold-cyan:  #00e5ff;
      --cold-red:   #ff2a2a;
      --cold-pink:  #ff6bda;
      --beat-ms: 488ms; /* 123 BPM, detected from Villain Season.mp3 */
      --bar-ms: 1952ms; /* 4 beats */
      --ticker-h: 44px;
      --font-head: "Impact", "Haettenschweiler", "Arial Narrow Bold", "Helvetica Neue", Arial, sans-serif;
      --font-body: "Helvetica Neue", Arial, sans-serif;
      --font-mono: "SFMono-Regular", "Menlo", "Consolas", monospace;
    }

    /* deck owns html/body */

    

    .reveal h1, .reveal h2, .reveal h3 {
      font-family: var(--font-head);
      letter-spacing: 0.03em;
      text-transform: uppercase;
      margin: 0;
      color: var(--cold-white);
      text-shadow: 0 14px 40px rgba(0,0,0,0.75);
      line-height: 0.92;
    }

    .reveal h1 { font-size: 6.4em; }
    .reveal h2 { font-size: 4.4em; }
    .reveal h3 { font-size: 2.4em; }

    .reveal p { font-size: 1.5em; color: var(--cold-white); text-shadow: 0 8px 26px rgba(0,0,0,0.7); }

    /* ---------- color accents ---------- */
    .cold-accent--green { color: var(--cold-green); }
    .cold-accent--amber { color: var(--cold-amber); }
    .cold-accent--cyan  { color: var(--cold-cyan); }
    .cold-accent--red   { color: var(--cold-red); }
    .cold-accent--pink  { color: var(--cold-pink); }

    /* gradient fills for big numbers */
    .cold-grad--green { background: linear-gradient(180deg, #d4ffc9 0%, var(--cold-green) 60%, #0fbf00 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
    .cold-grad--amber { background: linear-gradient(180deg, #fff1cc 0%, var(--cold-amber) 55%, #b56b00 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
    .cold-grad--cyan  { background: linear-gradient(180deg, #d6fbff 0%, var(--cold-cyan) 55%, #006a7a 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
    .cold-grad--red   { background: linear-gradient(180deg, #ffd1d1 0%, var(--cold-red) 55%, #800000 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
    .cold-grad--pink  { background: linear-gradient(180deg, #ffd5f1 0%, var(--cold-pink) 55%, #a03a85 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }

    /* ---------- text effects ---------- */
    .cold-stroke {
      -webkit-text-stroke: 3px var(--cold-white);
      text-stroke: 3px var(--cold-white);
      color: transparent;
      paint-order: stroke fill;
    }
    .cold-stroke--green { -webkit-text-stroke-color: var(--cold-green); }
    .cold-stroke--amber { -webkit-text-stroke-color: var(--cold-amber); }
    .cold-stroke--cyan  { -webkit-text-stroke-color: var(--cold-cyan); }
    .cold-stroke--red   { -webkit-text-stroke-color: var(--cold-red); }
    .cold-stroke--pink  { -webkit-text-stroke-color: var(--cold-pink); }

    /* ---------- glitch ---------- */
    .cold-glitch { position: relative; display: inline-block; }
    .cold-glitch::before, .cold-glitch::after {
      content: attr(data-text);
      position: absolute; inset: 0;
      pointer-events: none;
    }
    .cold-glitch::before {
      color: var(--cold-cyan);
      animation: glitch-a 1.6s steps(8, end) infinite;
      clip-path: polygon(0 0, 100% 0, 100% 38%, 0 38%);
      transform: translate(-3px, -2px);
      mix-blend-mode: screen;
    }
    .cold-glitch::after {
      color: var(--cold-red);
      animation: glitch-b 1.6s steps(8, end) infinite reverse;
      clip-path: polygon(0 62%, 100% 62%, 100% 100%, 0 100%);
      transform: translate(3px, 2px);
      mix-blend-mode: screen;
    }
    @keyframes glitch-a { 0%,90%,100% { transform: translate(-3px,-2px); } 30% { transform: translate(-6px,-1px); } 60% { transform: translate(-2px,-3px); } }
    @keyframes glitch-b { 0%,90%,100% { transform: translate(3px,2px); }   30% { transform: translate(6px,1px); }    60% { transform: translate(2px,3px); } }

    /* ---------- beat-driven pulse ---------- */
    /* Drives a subtle 1-beat scale pulse on .cold-pulse elements. */
    .cold-pulse { animation: beat-pulse var(--beat-ms) ease-out infinite; transform-origin: center; }
    @keyframes beat-pulse {
      0%   { transform: scale(1.00); filter: brightness(1.00); }
      8%   { transform: scale(1.04); filter: brightness(1.18); }
      40%  { transform: scale(1.00); filter: brightness(1.00); }
      100% { transform: scale(1.00); filter: brightness(1.00); }
    }

    /* full-screen radial flash that fires on every major musical pop */
    .cold-flash-overlay {
      position: fixed; inset: 0; z-index: 70;
      pointer-events: none;
      opacity: 0;
      mix-blend-mode: screen;
      background: radial-gradient(ellipse at 50% 50%, rgba(255,255,255,0.7) 0%, transparent 60%);
      will-change: opacity;
    }

    /* whole-deck low-amplitude vignette pulse, on the bar */
    .cold-vignette {
      position: fixed; inset: 0; pointer-events: none; z-index: 50;
      box-shadow: inset 0 0 240px rgba(0,0,0,0.85);
      animation: vignette-pulse var(--bar-ms) ease-in-out infinite;
    }
    @keyframes vignette-pulse {
      0%, 100% { box-shadow: inset 0 0 240px rgba(0,0,0,0.85); }
      6%       { box-shadow: inset 0 0 320px rgba(43,255,0,0.15), inset 0 0 240px rgba(0,0,0,0.85); }
      12%      { box-shadow: inset 0 0 240px rgba(0,0,0,0.85); }
    }

    /* ---------- background layers ---------- */
    .slide--cold {
      position: relative;
      height: 100%;
      padding: 0;
      background: var(--cold-black);
      overflow: hidden;
    }

    .cold-bg {
      position: absolute; inset: -40px;
      background-size: cover; background-position: center;
      background-color: var(--cold-black);
      filter: contrast(1.10) saturate(1.10) brightness(0.55);
      transform: scale(1.18);
      z-index: 0;
    }

    /* slow ken-burns timed to ~8 bars so it feels musical, not random */
    .cold-bg--ken { animation: ken var(--bar-ms) linear; animation-duration: calc(var(--bar-ms) * 8); animation-iteration-count: infinite; animation-direction: alternate; animation-timing-function: ease-in-out; }
    @keyframes ken {
      0%   { transform: scale(1.18) translate3d(-1.2%, 0.5%, 0); }
      100% { transform: scale(1.26) translate3d(1.2%, -1.5%, 0); }
    }

    .cold-overlay {
      position: absolute; inset: -40px;
      background: linear-gradient(180deg, rgba(0,0,0,0.35) 0%, rgba(0,0,0,0.78) 85%);
      z-index: 1;
    }

    /* scanline / grid overlay above image, below content */
    .cold-scan {
      position: absolute; inset: 0; z-index: 1;
      background:
        repeating-linear-gradient(180deg, rgba(255,255,255,0.018) 0 1px, transparent 1px 3px),
        radial-gradient(ellipse at 50% 50%, transparent 40%, rgba(0,0,0,0.55) 100%);
      mix-blend-mode: screen;
      pointer-events: none;
    }

    /* corner registration ticks — gives every slide a "broadcast" feel */
    .cold-ticks { position: absolute; inset: 24px; z-index: 3; pointer-events: none; }
    .cold-ticks::before, .cold-ticks::after,
    .cold-ticks > span::before, .cold-ticks > span::after {
      content: ""; position: absolute; width: 22px; height: 22px;
      border: 2px solid var(--cold-white); opacity: 0.55;
    }
    .cold-ticks::before        { top: 0; left: 0; border-right: 0; border-bottom: 0; }
    .cold-ticks::after         { top: 0; right: 0; border-left: 0; border-bottom: 0; }
    .cold-ticks > span::before { bottom: 0; left: 0; border-right: 0; border-top: 0; position: absolute; }
    .cold-ticks > span::after  { bottom: 0; right: 0; border-left: 0; border-top: 0; position: absolute; }

    /* slide index badge */
    .cold-slug {
      position: absolute; top: 28px; left: 50%; transform: translateX(-50%);
      z-index: 4;
      font-family: var(--font-mono);
      font-size: 0.85em; letter-spacing: 0.4em;
      color: rgba(255,255,255,0.6);
      text-transform: uppercase;
    }
    .cold-slug .cold-dot { display: inline-block; width: 8px; height: 8px; background: var(--cold-green); border-radius: 50%; margin: 0 10px 2px; vertical-align: middle; animation: beat-pulse var(--beat-ms) ease-out infinite; }

    /* ---------- panel layouts ---------- */
    .cold-panel {
      position: relative; z-index: 2;
      width: 100%; height: 100%;
      display: flex; flex-direction: column;
      justify-content: center; align-items: flex-start;
      padding: 64px 96px 64px;
      text-align: left;
    }
    .cold-panel--center { align-items: center; text-align: center; }
    .cold-panel--bottom { justify-content: flex-end; padding-bottom: 64px; }

    .cold-stacked { display: flex; flex-direction: column; gap: 6px; }
    .cold-stack { line-height: 0.88; }

    .cold-subtext {
      font-size: 1.15em; margin-top: 18px; letter-spacing: 0.06em;
      color: rgba(255,255,255,0.85);
      max-width: 70ch;
    }
    .cold-subtext.mono { font-family: var(--font-mono); font-size: 0.95em; letter-spacing: 0.16em; opacity: 0.75; }

    .cold-tag {
      font-family: var(--font-mono);
      font-size: 0.85em; letter-spacing: 0.4em;
      text-transform: uppercase; opacity: 0.7; margin-bottom: 18px;
    }

    /* counter */
    .cold-counter { font-variant-numeric: tabular-nums; }

    /* word cascade list */
    .cold-stacked-words { display: flex; flex-direction: column; gap: 6px; margin-top: 18px; }
    .cold-word {
      font-family: var(--font-head); font-size: 2.4em; letter-spacing: 0.06em;
      line-height: 1; padding-left: 0.4em;
      border-left: 6px solid var(--cold-green);
    }
    .cold-word:nth-child(2n) { border-color: var(--cold-cyan); }
    .cold-word:nth-child(3n) { border-color: var(--cold-amber); }

    /* split panel for myth vs reality */
    .cold-split-panel { position: relative; z-index: 2; width: 100%; height: 100%; display: flex; }
    .cold-split-left, .cold-split-right {
      flex: 1; display: flex; flex-direction: column;
      justify-content: center; align-items: center;
      padding: 60px 40px; gap: 14px;
    }
    .cold-split-left  { background: linear-gradient(135deg, rgba(255,42,42,0.32) 0%, rgba(0,0,0,0.55) 100%); }
    .cold-split-right { background: linear-gradient(135deg, rgba(0,0,0,0.55) 0%, rgba(43,255,0,0.32) 100%); }
    .cold-split-divider {
      position: absolute; top: 8%; bottom: 8%; left: 50%; width: 2px;
      background: linear-gradient(180deg, transparent, rgba(255,255,255,0.6), transparent);
      z-index: 3;
    }
    .cold-split-label {
      font-family: var(--font-head); font-size: 1.6em; letter-spacing: 0.3em;
      margin-bottom: 18px; opacity: 0.95;
    }
    .cold-myth-item, .cold-reality-item {
      font-family: var(--font-head);
      font-size: 2.2em; letter-spacing: 0.04em; text-align: center;
    }
    .cold-myth-item   { text-decoration: line-through; text-decoration-thickness: 4px; opacity: 0.7; color: #ffd0d0; }
    .cold-reality-item{ color: #d8ffce; }

    /* stats grid */
    .cold-stats-grid {
      display: grid; grid-template-columns: repeat(2, 1fr);
      gap: 36px; width: 100%; max-width: 1000px;
    }
    .cold-stat-item {
      text-align: center;
      border: 1px solid rgba(255,255,255,0.12);
      padding: 28px 18px;
      background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0));
    }
    .cold-stat-number {
      font-family: var(--font-head); font-size: 5em; line-height: 1; margin-bottom: 6px;
    }
    .cold-stat-label  {
      font-family: var(--font-mono); font-size: 1em; letter-spacing: 0.25em; opacity: 0.85;
      text-transform: uppercase;
    }

    /* CTA box */
    .cold-cta-text {
      font-family: var(--font-head); font-size: 2.6em; letter-spacing: 0.1em;
      margin-top: 30px; padding: 18px 44px;
      border: 4px solid var(--cold-green);
      animation: cta-pulse var(--bar-ms) ease-in-out infinite;
    }
    @keyframes cta-pulse {
      0%, 100% { box-shadow: 0 0 0 rgba(43,255,0,0.0), inset 0 0 0 rgba(43,255,0,0); transform: scale(1); }
      50%      { box-shadow: 0 0 60px rgba(43,255,0,0.55), inset 0 0 24px rgba(43,255,0,0.15); transform: scale(1.02); }
    }

    /* ---------- fragment animations (snappy, well under one beat) ---------- */
    .cold-fragment.cold-fragment--fly-in   { opacity: 0; transform: translateX(-80px) scale(0.96); }
    .cold-fragment.cold-fragment--fly-in.visible { opacity: 1; transform: translateX(0) scale(1); transition: transform 320ms cubic-bezier(0.2,0.7,0.2,1), opacity 240ms ease; }

    .cold-fragment.cold-fragment--snap     { opacity: 0; transform: scale(0.7); }
    .cold-fragment.cold-fragment--snap.visible { opacity: 1; transform: scale(1); transition: transform 260ms cubic-bezier(0.2,0.9,0.2,1.2), opacity 180ms ease; }

    .cold-fragment.cold-fragment--pop      { opacity: 0; transform: translateY(40px) scale(0.96); }
    .cold-fragment.cold-fragment--pop.visible { opacity: 1; transform: translateY(0) scale(1); transition: transform 320ms cubic-bezier(0.2,0.8,0.2,1), opacity 220ms ease; }

    .cold-fragment.cold-fragment--strike   { opacity: 0; transform: translateX(20px); }
    .cold-fragment.cold-fragment--strike.visible { opacity: 1; transform: translateX(0); transition: transform 260ms cubic-bezier(0.2,0.7,0.2,1), opacity 200ms ease; }

    .cold-fragment.cold-fragment--sweep    { opacity: 0; clip-path: inset(0 100% 0 0); }
    .cold-fragment.cold-fragment--sweep.visible { opacity: 1; clip-path: inset(0 0 0 0); transition: clip-path 360ms cubic-bezier(0.2,0.8,0.2,1), opacity 200ms ease; }

    /* ---------- marquee ticker ---------- */
    .cold-ticker {
      position: fixed; left: 0; right: 0; bottom: 0;
      height: var(--ticker-h); z-index: 60;
      background: rgba(0,0,0,0.88);
      border-top: 1px solid rgba(255,255,255,0.14);
      overflow: hidden;
      font-family: var(--font-mono);
      font-size: 0.85em; letter-spacing: 0.18em;
      color: rgba(255,255,255,0.85);
      text-transform: uppercase;
      display: flex; align-items: center;
    }
    .cold-ticker .track {
      display: inline-block; white-space: nowrap;
      padding-left: 100%;
      animation: ticker-scroll 60s linear infinite;
      line-height: var(--ticker-h);
    }
    .cold-ticker .track span { padding: 0 36px; }
    .cold-ticker .track span::before { content: "◆"; color: var(--cold-green); margin-right: 10px; }
    @keyframes ticker-scroll {
      0%   { transform: translateX(0); }
      100% { transform: translateX(-100%); }
    }

    /* ---------- start prompt ---------- */
    .cold-start-overlay {
      position: fixed; inset: 0; z-index: 200;
      background: #000;
      display: flex; align-items: center; justify-content: center;
      cursor: pointer;
    }
    .cold-start-overlay .inner {
      text-align: center; font-family: var(--font-head);
      letter-spacing: 0.12em;
    }
    .cold-start-overlay .big {
      font-size: 4em; color: var(--cold-green); animation: beat-pulse var(--beat-ms) ease-out infinite;
    }
    .cold-start-overlay .sub {
      font-family: var(--font-mono); font-size: 0.95em; letter-spacing: 0.4em;
      color: rgba(255,255,255,0.75); margin-top: 18px;
    }

    @media (max-width: 900px) {
      .cold-panel { padding: 0 36px; }
      .cold-panel--bottom { padding-bottom: 60px; }
      .reveal h1 { font-size: 3.6em; }
      .reveal h2 { font-size: 2.6em; }
      .cold-word { font-size: 1.8em; }
      .cold-split-panel { flex-direction: column; }
      .cold-split-divider { display: none; }
      .cold-stats-grid { grid-template-columns: 1fr; gap: 18px; }
      .cold-stat-number { font-size: 3.4em; }
      .cold-ticker { height: 28px; font-size: 0.75em; }
    }

/* ============================================================
   Stage reset — discrete bottom-right button that wipes all
   tool localStorage + reloads every iframe so demos start clean
   between rehearsals. Low opacity by default so audiences don't
   read it as "part of the deck."
   ============================================================ */
.stage-reset {
  position: fixed;
  bottom: 14px;
  right: 14px;
  z-index: 9999;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px 7px 10px;
  border-radius: 999px;
  background: rgba(8, 22, 41, 0.85);
  border: 1px solid rgba(255, 220, 100, 0.35);
  color: rgba(255, 220, 100, 0.85);
  font-family: var(--font-mono, ui-monospace, "SF Mono", Menlo, monospace);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 600;
  cursor: pointer;
  opacity: 0.18;
  transition: opacity 180ms ease, background 180ms ease, transform 180ms ease;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.stage-reset:hover {
  opacity: 0.95;
  background: rgba(8, 22, 41, 0.95);
  transform: translateY(-1px);
}
.stage-reset:active { transform: translateY(0); }
.stage-reset svg { stroke: currentColor; }

.stage-reset-toast {
  position: fixed;
  bottom: 56px;
  right: 14px;
  z-index: 9998;
  background: rgba(8, 22, 41, 0.95);
  border: 1px solid rgba(255, 220, 100, 0.55);
  border-left: 3px solid var(--gold, #ffdc64);
  border-radius: 6px;
  padding: 8px 14px;
  font-family: var(--font-mono, ui-monospace, "SF Mono", Menlo, monospace);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: rgba(255, 248, 220, 0.95);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
  pointer-events: none;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 220ms ease, transform 220ms ease;
}
.stage-reset-toast.is-shown { opacity: 1; transform: translateY(0); }