body {
  min-height: 100vh;
  overflow: hidden;
  background: #202020;
}

.deck {
  display: grid;
  min-height: calc(100vh - 38px);
  grid-template-rows: 1fr auto;
}

.slides {
  position: relative;
  min-height: 0;
}

.slide {
  position: absolute;
  inset: 0;
  display: none;
  overflow: auto;
  background: var(--paper);
  padding: clamp(1.25rem, 4vw, 4rem);
}

.slide[aria-hidden="false"] {
  display: grid;
}

.slide--title {
  place-items: center;
  background:
    linear-gradient(135deg, transparent 0 58%, rgba(255, 255, 255, 0.35) 58%),
    var(--paper);
}

.title-block {
  width: min(100%, 1080px);
}

.title-block h1 {
  max-width: 11ch;
  margin-bottom: 1rem;
  font-size: clamp(3rem, 9vw, 8rem);
  line-height: 0.88;
  letter-spacing: -0.07em;
}

.title-block .lede {
  font-size: clamp(1rem, 2vw, 1.35rem);
}

.slide__grid {
  display: grid;
  width: min(100%, 1280px);
  margin: auto;
  grid-template-columns: minmax(260px, 0.72fr) minmax(480px, 1.4fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: center;
}

.slide__copy {
  align-self: center;
}

.slide__number {
  display: inline-grid;
  width: 2.4rem;
  height: 2.4rem;
  margin-bottom: 1rem;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 850;
}

.phase-marker {
  display: inline-flex;
  margin-bottom: 0.8rem;
  border: 1px solid var(--line-strong);
  background: var(--proposed);
  padding: 0.35rem 0.6rem;
  font-size: 0.7rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.phase-marker--implemented {
  background: var(--implemented);
}

.slide h2 {
  max-width: 15ch;
  margin-bottom: 0.8rem;
  font-size: clamp(2rem, 5vw, 4.5rem);
  line-height: 0.96;
  letter-spacing: -0.055em;
}

.slide__copy > p {
  color: var(--muted);
  font-size: clamp(0.9rem, 1.6vw, 1.1rem);
  line-height: 1.62;
}

.story-beat {
  margin-top: 1.2rem;
  border-left: 4px solid var(--line-strong);
  padding-left: 1rem;
}

.story-beat strong {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.story-beat p {
  margin-bottom: 0;
  font-size: 0.85rem;
  line-height: 1.5;
}

.slide__visual {
  min-width: 0;
}

.slide__visual .viewport {
  width: 100%;
}

.slide__visual .portal {
  min-height: 440px;
}

.sequence {
  display: grid;
  width: min(100%, 1180px);
  margin: auto;
  gap: 0.65rem;
}

.sequence h2 {
  max-width: none;
}

.sequence-row {
  display: grid;
  grid-template-columns: 110px 1.2fr 1.6fr;
  gap: 0.75rem;
  align-items: stretch;
}

.sequence-phase,
.sequence-feature,
.sequence-evidence {
  border: 1px solid var(--line-strong);
  background: #fff;
  padding: 0.75rem;
}

.sequence-phase {
  display: grid;
  place-items: center;
  background: var(--proposed);
  text-align: center;
  font-size: 0.72rem;
  font-weight: 850;
  text-transform: uppercase;
}

.sequence-row--implemented .sequence-phase {
  background: var(--implemented);
}

.sequence-feature strong,
.sequence-evidence strong {
  display: block;
  margin-bottom: 0.25rem;
}

.sequence-feature,
.sequence-evidence {
  font-size: 0.78rem;
  line-height: 1.45;
}

.deck-controls {
  display: grid;
  grid-template-columns: auto minmax(120px, 1fr) auto auto auto auto;
  gap: 0.75rem;
  align-items: center;
  border-top: 1px solid #555;
  background: #202020;
  color: #fff;
  padding: 0.7rem 1rem;
}

.deck-button {
  border: 1px solid #aaa;
  border-radius: 999px;
  background: transparent;
  color: #fff;
  padding: 0.5rem 0.8rem;
  font-size: 0.75rem;
  font-weight: 750;
}

.deck-button:hover,
.deck-button:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.22);
  outline-offset: 2px;
}

.deck-progress {
  height: 5px;
  overflow: hidden;
  background: #555;
}

.deck-progress__bar {
  width: 0;
  height: 100%;
  background: #fff;
  transition: width 180ms ease;
}

.deck-count {
  min-width: 4.5rem;
  text-align: center;
  font-size: 0.75rem;
}

.deck-link {
  color: #fff;
  font-size: 0.75rem;
}

.overview {
  position: fixed;
  inset: 38px 0 0;
  z-index: 10;
  display: none;
  overflow: auto;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  background: rgba(22, 22, 22, 0.96);
  padding: 1.5rem;
}

.overview[data-open="true"] {
  display: grid;
}

.overview-card {
  min-height: 150px;
  border: 1px solid #888;
  background: var(--paper);
  color: var(--ink);
  padding: 1rem;
  text-align: left;
}

.overview-card strong {
  display: block;
  margin-bottom: 0.4rem;
}

.overview-card span {
  color: var(--muted);
  font-size: 0.75rem;
}

@media (max-width: 900px) {
  body {
    overflow: auto;
  }

  .deck {
    min-height: calc(100vh - 38px);
  }

  .slide {
    padding: 1.2rem;
  }

  .slide__grid {
    grid-template-columns: 1fr;
  }

  .slide__copy h2 {
    max-width: none;
  }

  .slide__visual .portal__layout {
    grid-template-columns: 1fr;
  }

  .slide__visual .portal__sidebar {
    display: none;
  }

  .sequence-row {
    grid-template-columns: 1fr;
  }

  .deck-controls {
    grid-template-columns: auto 1fr auto auto auto;
  }

  .deck-link {
    display: none;
  }

  .overview {
    grid-template-columns: 1fr;
  }
}

@media print {
  body {
    overflow: visible;
    background: #fff;
  }

  .planning-banner,
  .deck-controls,
  .overview {
    display: none !important;
  }

  .deck,
  .slides {
    display: block;
  }

  .slide {
    position: relative;
    display: grid !important;
    min-height: 100vh;
    break-after: page;
  }
}