/* Slide deck: 16:9 slides that scale with their width (container query units), stack on phones,
   and print one slide per 13.333 x 7.5 in page. */
:root {
  /* Slides are paper: they keep these light tokens in both color schemes, like the homepage previews. */
  --ink: #191918;
  --body: #3d3d38;
  --muted: #62625b;
  --soft: #ecebe5;
  --paper: #fdfcfa;
  --accent: #ae0808;
  --rule: #d5d4cd;
  --rule-strong: #84837b;
  /* chart series (checked with the dataviz palette validator, light surface) */
  --series-report: #2a6fb0;
  --series-code: #b5761a;
  --person-off: #c4c3bb;
  --good-ink: #2e6b46;
  --next-ink: #1f5f8b;
  --planned-ink: #8a5300;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  /* the page around the slides follows the color scheme */
  color-scheme: light;
  --page-bg: #f6f5f1;
  --page-ink: #191918;
  --page-muted: #62625b;
  --page-rule: #d5d4cd;
  --page-accent: #ae0808;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page-bg: #171918;
    --page-ink: #eeeee7;
    --page-muted: #adaea5;
    --page-rule: #3c403a;
    --page-accent: #d87067;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --page-bg: #171918;
  --page-ink: #eeeee7;
  --page-muted: #adaea5;
  --page-rule: #3c403a;
  --page-accent: #d87067;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--page-bg);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.4;
}

.deck-bar {
  max-width: 1280px;
  margin: 0 auto;
  padding: 14px 16px 0;
  color: var(--page-ink);
  font-size: 0.95rem;
}

.deck-bar p { margin: 0 0 6px; }
.deck-bar a { color: var(--page-ink); font-weight: 600; text-underline-offset: 3px; }
.deck-bar a:hover { color: var(--page-accent); }
.deck-bar a:focus-visible { outline: 2px solid var(--page-accent); outline-offset: 3px; }

.deck {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  padding: 16px 16px 48px;
}

/* ---------- the slide box ---------- */
.slide {
  --fs-kicker: 1.2cqw;
  --fs-h1: 6.4cqw;
  --fs-h2: 3.3cqw;
  --fs-body: 1.7cqw;
  --fs-big: 2.05cqw;
  --fs-small: 1.12cqw;
  --pad-y: 3.4cqw;
  --pad-x: 4.8cqw;
  --gap: 2.4cqw;
  position: relative;
  container-type: inline-size;
  width: min(1280px, 100%, (100vh - 120px) * 16 / 9);
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--page-rule);
  background: var(--paper);
  scroll-margin-top: 80px;
}

/* Text size lives here, not on .slide: cqw on the container element itself resolves against the viewport,
   so on .slide it grew with the window and overflowed the fixed 16:9 box. Here it follows the slide width. */
.slide-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: var(--pad-y) var(--pad-x) calc(var(--pad-y) + 1.4cqw);
  font-size: var(--fs-body);
}

.slide-num {
  position: absolute;
  right: var(--pad-x);
  bottom: 1.5cqw;
  margin: 0;
  color: var(--muted);
  font-size: var(--fs-small);
}

.slide-num::before { content: "Undiagnosed No More  ·  "; white-space: pre; }

.kicker {
  margin: 0 0 0.6cqw;
  color: var(--muted);
  font-family: var(--mono);
  font-size: calc(var(--fs-kicker) * 1.15);
  font-weight: 400;
}

h1, h2 {
  margin: 0 0 var(--gap);
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 400;
  line-height: 1.15;
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }

p, li { margin: 0 0 0.9em; }
ul, ol { margin: 0; padding: 0; }
strong { color: var(--ink); font-weight: 600; }

.big-text { font-size: var(--fs-big); line-height: 1.35; color: var(--ink); }
.lead { color: var(--body); max-width: 70em; }
.footnote { color: var(--muted); font-size: var(--fs-small); }

.source {
  margin: auto 0 0;
  padding-top: 1cqw;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: var(--fs-small);
  max-width: 82%;
}

/* ---------- layouts ---------- */
.two-col {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: calc(var(--gap) * 1.5);
  align-items: start;
}

.two-col-wide-left { grid-template-columns: 1.4fr 1fr; }

.three-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
  margin-bottom: var(--gap);
}

.callout-box, .panel, .tile {
  padding: 1.8cqw 2cqw;
  border: 1px solid var(--rule);
  background: var(--soft);
}

.callout-title, .panel-title, .points-title {
  margin-bottom: 0.8em;
  color: var(--ink);
  font-weight: 600;
  font-size: var(--fs-big);
}

.panel ul { list-style: none; }
.panel .panel-title { margin-bottom: 0.6em; }
.panel li { padding-left: 1.1em; position: relative; margin-bottom: 0.45em; }
.panel li::before { content: ""; position: absolute; left: 0; top: 0.6em; width: 0.4em; height: 0.4em; background: var(--ink); }

.stat { margin: 0 0 0.4em; font-size: var(--fs-big); }
.stat-num, .tile-num, .cost-num {
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.stat-num { font-size: 3.4cqw; margin-right: 0.3em; }

.tiles { display: grid; gap: 1.6cqw; }
.tile p { margin-bottom: 0; }
.tile .tile-num { font-size: 4cqw; line-height: 1; margin-bottom: 0.25em; }
.slide-inner > .footnote { margin-top: 1.2cqw; }

/* ---------- title slide ---------- */
.slide-title { background: #191918; color: #f6f5f1; }
.slide-title .slide-inner { justify-content: center; padding-left: 7cqw; }
.slide-title .kicker { color: #adaea5; }
.slide-title h1 { color: #f6f5f1; margin-bottom: 0.15em; }
.slide-title .subtitle { margin: 0 0 1.2em; color: #d87067; font-family: var(--sans); font-size: 3.6cqw; }
.slide-title .tagline { max-width: 34em; color: #cfcec6; font-size: var(--fs-big); }
.team { list-style: none; display: flex; flex-wrap: wrap; gap: 0.6em 3em; margin-top: 1.6em; }
.team li { margin: 0; color: #cfcec6; }
.team strong { display: block; color: #f6f5f1; font-size: var(--fs-big); }
.url { margin-top: 2em; color: #f6f5f1; font-family: var(--mono); font-weight: 400; }

/* ---------- slide 3: 1 in 9 ---------- */
.people { display: flex; gap: 1.2cqw; margin: 0.4cqw 0 2.4cqw; }
.person { width: 3.6cqw; height: 6cqw; fill: var(--person-off); }
.person-on { fill: var(--series-report); }

/* ---------- slide 4: bars (single series) ---------- */
.bars, .dots { margin: 0.6cqw 0 0; }
.bar-row, .dot-row {
  display: grid;
  grid-template-columns: 24% 1fr;
  gap: 1.6cqw;
  align-items: center;
  margin-bottom: 1.2cqw;
}
.bar-label, .dot-label { text-align: right; color: var(--ink); font-weight: 600; }
.bar-track {
  position: relative;
  height: 3cqw;
  margin-right: 12%;
  border-right: 2px dashed var(--muted);
}
.bar {
  display: block;
  height: 100%;
  background: var(--series-report);
}
.w28 { width: 28%; }
.w46 { width: 46%; }
.w48 { width: 48%; }
.w49 { width: 49%; }
.w73 { width: 73%; }
.bar-value { position: absolute; top: 50%; transform: translate(0.5em, -50%); color: var(--ink); font-weight: 600; font-variant-numeric: tabular-nums; }
.w28 + .bar-value { left: 28%; }
.w46 + .bar-value { left: 46%; }
.w48 + .bar-value { left: 48%; }
.w49 + .bar-value { left: 49%; }
.w73 + .bar-value { left: 73%; }
.bar-axis .bar-track, .dot-axis .dot-track { height: 1.6cqw; border-right: 0; border-top: 1px solid var(--rule); }
.dot-axis .dot-track { border-top: 0; border-bottom: 0; }
.tick { position: absolute; top: 0.3cqw; color: var(--muted); font-size: var(--fs-small); white-space: nowrap; }
.tick-0 { left: 0; }
.tick-50 { left: 50%; transform: translateX(-50%); }
.tick-100 { right: 0; }
figcaption { margin-top: 1.4cqw; color: var(--body); font-size: var(--fs-small); max-width: 80%; }

/* ---------- slide 6: dot plot (two series) ---------- */
.legend { display: flex; gap: 2.4em; list-style: none; margin-bottom: 1.2cqw; padding-left: calc(24% + 1.6cqw); font-size: var(--fs-small); color: var(--body); }
.legend li { display: flex; align-items: center; gap: 0.5em; margin: 0; }
.swatch { width: 1.1cqw; height: 1.1cqw; border-radius: 50%; }
.swatch-report { background: var(--series-report); }
.swatch-code { background: var(--series-code); }
.dot-row { margin-bottom: 1.8cqw; }
.dot-track {
  position: relative;
  height: 3cqw;
  margin-right: 4%;
  border-bottom: 1px solid var(--rule);
}
.dot {
  position: absolute;
  top: 50%;
  width: 1.5cqw;
  height: 1.5cqw;
  border: 2px solid var(--paper);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}
.dot span {
  position: absolute;
  bottom: 120%;
  left: 50%;
  transform: translateX(-50%);
  color: var(--ink);
  font-size: var(--fs-small);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.dot-report { background: var(--series-report); }
.dot-code { background: var(--series-code); }
/* position on a 0.5 to 0.8 axis: (value - 0.5) / 0.3 */
.at-53 { left: 10%; }
.at-61 { left: 36.667%; }
.at-64 { left: 46.667%; }
.at-67 { left: 56.667%; }
.at-73 { left: 76.667%; }
.at-74 { left: 80%; }
.dot-axis { margin-top: -0.6cqw; }
.dot-label em { color: var(--muted); font-weight: 400; }

/* ---------- slide 7: one engine, four doors ---------- */
.engine-diagram { display: grid; gap: 0; }
.doors { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.6cqw; list-style: none; }
.door {
  position: relative;
  margin: 0 0 2.6cqw;
  padding: 1.4cqw 1.6cqw;
  border: 1px solid var(--rule);
  border-top: 0.3cqw solid var(--ink);
  background: var(--soft);
}
.door::after { /* connector down to the engine */
  content: "";
  position: absolute;
  left: 50%;
  bottom: calc(-2.6cqw - 1px);
  height: 2.6cqw;
  border-left: 1px solid var(--rule-strong);
}
.door-who { margin-bottom: 0.3em; color: var(--ink); font-weight: 600; font-size: var(--fs-big); }
.door-what { margin-bottom: 0.7em; color: var(--body); font-size: var(--fs-small); line-height: 1.35; }
.engine {
  padding: 1.4cqw 2cqw;
  background: var(--ink);
  color: #cfcec6;
  text-align: center;
}
.engine p { margin: 0; }
.engine-title { color: #f6f5f1 !important; font-weight: 600; font-size: var(--fs-big); margin-bottom: 0.2em !important; }
.flow {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6cqw 0;
  margin-top: 2.2cqw;
  list-style: none;
  font-size: var(--fs-small);
  font-weight: 400;
}
.flow { gap: 0.6cqw 2.6cqw; }
.flow li { position: relative; margin: 0; padding: 0.6cqw 1.4cqw; border: 1px solid var(--rule-strong); background: var(--paper); color: var(--ink); }
.flow li + li::before { content: "\2192"; position: absolute; left: -2cqw; top: 50%; transform: translateY(-50%); color: var(--muted); font-size: var(--fs-body); }
.diagram-note { margin: 1.2cqw 0 0; text-align: center; color: var(--muted); font-size: var(--fs-small); }

.chip {
  display: inline-block;
  color: var(--good-ink);
  font-size: var(--fs-small);
  font-weight: 600;
  white-space: nowrap;
}
.chip-next { color: var(--next-ink); }
.chip-planned { color: var(--planned-ink); }

/* ---------- screenshot slides ---------- */
.shot-layout {
  display: grid;
  grid-template-columns: 56% 1fr;
  gap: calc(var(--gap) * 1.2);
  align-items: start;
  min-height: 0;
}
.shot { margin: 0; }
.shot img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--rule);
}
.points { list-style: none; }
.points li { position: relative; padding-left: 1.2em; margin-bottom: 0.85em; }
.points li::before { content: ""; position: absolute; left: 0; top: 0.55em; width: 0.4em; height: 0.4em; background: var(--ink); }
.cost-row { display: flex; align-items: baseline; gap: 0.8em; margin-bottom: 0.9em; }
.cost-num { flex: none; min-width: 3.2em; font-size: 3.6cqw; line-height: 1; }

/* ---------- roadmap ---------- */
.roadmap { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); list-style: none; margin-bottom: var(--gap); }
.stage { margin: 0; padding: 1.3cqw 1.6cqw; border: 1px solid var(--rule); background: var(--soft); }
.stage p { margin-bottom: 0.6em; }
.stage-title { color: var(--ink); font-family: var(--sans); font-size: 2.3cqw; margin-bottom: 0.3em !important; }
.stage-when { margin-bottom: 0.4em !important; }
.ask { font-size: var(--fs-big); margin-bottom: 0.6em; }
.closing { margin: 0; }
.ack { margin: auto 0 0; padding-top: 1cqw; border-top: 1px solid var(--rule); color: var(--muted); font-size: var(--fs-small); max-width: 80%; }

/* ---------- phones: one long column ---------- */
@media (max-width: 700px) {
  .deck { gap: 16px; padding: 12px 16px 40px; }
  .slide {
    --fs-kicker: 0.72rem;
    --fs-h1: 2.3rem;
    --fs-h2: 1.45rem;
    --fs-body: 1rem;
    --fs-big: 1.08rem;
    --fs-small: 0.82rem;
    --pad-y: 22px;
    --pad-x: 18px;
    --gap: 16px;
    width: 100%;
    aspect-ratio: auto;
  }
  .slide-inner { height: auto; padding-bottom: 44px; }
  .slide-num { bottom: 14px; }
  .two-col, .two-col-wide-left, .three-col, .shot-layout, .roadmap, .doors { grid-template-columns: 1fr; }
  .source, .ack, figcaption { max-width: none; margin-top: 16px; }
  .slide-title .subtitle { font-size: 1.5rem; }
  .slide-title .slide-inner { padding: 36px 20px 48px; }
  .stat-num { font-size: 1.8rem; }
  .tile .tile-num { font-size: 2.2rem; }
  .cost-num { font-size: 1.8rem; }
  .stage-title { font-size: 1.3rem; }
  .callout-box, .panel, .tile, .stage { padding: 14px 16px; }
  .people { gap: 6px; margin: 4px 0 16px; }
  .person { width: 24px; height: 40px; }
  .bar-row, .dot-row { grid-template-columns: 1fr; gap: 4px; margin-bottom: 14px; }
  .bar-label, .dot-label { text-align: left; }
  .bar-track { height: 22px; }
  .dot-track { height: 34px; margin-top: 14px; }
  .dot { width: 14px; height: 14px; }
  .legend { flex-direction: column; gap: 4px; padding-left: 0; }
  .swatch { width: 12px; height: 12px; }
  .bar-axis .bar-label, .dot-axis .dot-label { display: none; }
  .bar-axis .bar-track, .dot-axis .dot-track { height: 34px; margin-top: 0; }
  .tick-100 { white-space: normal; max-width: 40%; text-align: right; }
  .bar-axis .bar-track { height: 58px; }
  .bar-axis { margin-bottom: 0; }
  .door { margin-bottom: 18px; padding: 12px 14px; }
  .door::after { bottom: -19px; height: 18px; }
  .engine { padding: 14px; }
  .flow { flex-direction: column; align-items: stretch; gap: 0; margin-top: 16px; }
  .flow li { padding: 8px 12px; text-align: center; }
  .flow li + li { margin-top: 22px; }
  .flow li + li::before { content: "\2193"; top: -20px; left: 50%; transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* ---------- print: one slide per page ---------- */
@page { size: 13.333in 7.5in; margin: 0; }

@media print {
  html, body { background: #fff; }
  body { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  .deck-bar { display: none; }
  .deck { display: block; padding: 0; }
  .slide {
    width: 13.333in;
    height: 7.5in;
    aspect-ratio: auto;
    margin: 0;
    border: 0;
    break-after: page;
    break-inside: avoid;
  }
  .slide:last-child { break-after: auto; }
}