@font-face { font-family: "EB Garamond"; font-weight: 400; font-style: normal; font-display: block; src: url(lib/fonts/eb-garamond-latin-400-normal.woff2) format("woff2"); }
@font-face { font-family: "EB Garamond"; font-weight: 400; font-style: italic; font-display: block; src: url(lib/fonts/eb-garamond-latin-400-italic.woff2) format("woff2"); }
@font-face { font-family: "EB Garamond"; font-weight: 500; font-style: normal; font-display: block; src: url(lib/fonts/eb-garamond-latin-500-normal.woff2) format("woff2"); }
@font-face { font-family: "EB Garamond"; font-weight: 500; font-style: italic; font-display: block; src: url(lib/fonts/eb-garamond-latin-500-italic.woff2) format("woff2"); }
@font-face { font-family: "Inter"; font-weight: 400; font-style: normal; font-display: block; src: url(lib/fonts/inter-latin-400-normal.woff2) format("woff2"); }
@font-face { font-family: "Inter"; font-weight: 500; font-style: normal; font-display: block; src: url(lib/fonts/inter-latin-500-normal.woff2) format("woff2"); }
@font-face { font-family: "Inter"; font-weight: 600; font-style: normal; font-display: block; src: url(lib/fonts/inter-latin-600-normal.woff2) format("woff2"); }

:root {
  --paper: #ffffff;
  --ink: #111827;
  --body: #374151;
  --muted: #6b7280;
  --rule: #e5e7eb;
  --wash: #f3f4f6;
  --accent: #a11e3b;
  --serif: "EB Garamond", "Hoefler Text", Georgia, serif;
  --sans: "Inter", "Helvetica Neue", Arial, sans-serif;
}

html, body, .reveal-viewport { background: var(--paper); }

.reveal {
  font-family: var(--sans);
  font-size: 26px;
  color: var(--body);
  -webkit-font-smoothing: antialiased;
}

.reveal .slides { text-align: left; }

.reveal .slides > section { height: 900px; padding: 0; }

.reveal p, .reveal li { text-wrap: pretty; }

/* The subset fonts lack U+2011, so compounds are kept whole with nowrap instead. */
.nobr { white-space: nowrap; }

.frame {
  position: relative;
  box-sizing: border-box;
  height: 900px;
  padding: 64px 88px 96px;
  display: flex;
  flex-direction: column;
}

.reveal h1, .reveal h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 500;
  color: var(--ink);
  line-height: 1.04;
  text-wrap: balance;
}

.reveal h1 { font-size: 92px; letter-spacing: -0.01em; }
.reveal h2 { font-size: 56px; }

.reveal p { margin: 0; }

.body {
  flex: 1;
  min-height: 0;
  margin-top: 40px;
  display: grid;
  gap: 56px;
}

.split { grid-template-columns: 430px 1fr; align-items: start; }
.split.flip { grid-template-columns: 1fr 430px; }

.lede {
  font-size: 26px;
  line-height: 1.45;
  color: var(--body);
}

/* A slide carried by text: a little larger, the QR code to the deck beside the list. */
.body.prose { grid-template-columns: 1fr 240px; gap: 0 64px; align-content: start; }
.body.prose .lede { grid-column: 1 / -1; font-size: 30px; }
.body.prose .qr { display: block; width: 100%; margin-top: 26px; }
.body.prose .stat-line {
  margin-top: 12px !important;
  font-size: 24px;
  line-height: 1.4;
  color: var(--muted);
}

.body.prose .stat-line b { font-weight: 600; color: var(--ink); }

.body.prose .facts { margin-top: 14px; }
.body.prose .facts li { padding: 12px 0; font-size: 26px; color: var(--body); }

.facts-label {
  margin-top: 36px !important;
  font: 600 17px/1 var(--sans);
  letter-spacing: 0.02em;
  color: var(--muted);
}

.facts li.caveat,
.body.prose .facts li.caveat { color: var(--accent); font-weight: 600; }

.facts {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
}

.facts li {
  padding: 16px 0;
  border-top: 1px solid var(--rule);
  font-size: 18px;
  line-height: 1.45;
  color: var(--muted);
}

.facts b { font-weight: 600; color: var(--ink); }

.media { margin: 0; min-width: 0; }

.media video, .media img.shot {
  box-sizing: border-box;
  display: block;
  width: 100%;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--paper);
}

.media img.plain { display: block; width: 100%; }

/* Slide 3: the demo stands alone, so it is capped by height rather than width. */
.media.demo video {
  width: auto;
  max-width: 100%;
  max-height: 560px;
  margin: 0 auto;
}

/* Slide 4: the recognition stages as tabs */

.media.panels {
  display: flex;
  flex-direction: column;
  height: 600px;
  padding: 24px 28px 20px;
  border: 1px solid var(--rule);
  border-radius: 6px;
}

.panel-tabs { display: flex; gap: 34px; margin-bottom: 22px; }

.panel-tab {
  padding: 0 0 6px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: none;
  font: 400 21px var(--sans);
  color: var(--muted);
  cursor: pointer;
}

.panel-tab.current { color: var(--accent); border-bottom-color: var(--accent); }

.panel-stage { flex: 1; min-height: 0; display: flex; align-items: center; justify-content: center; }

.panel-stage img { max-width: 100%; max-height: 100%; }

.media.panels figcaption { margin-top: 16px; }
.media.panels figcaption .source { display: block; margin-top: 4px; color: #9ca3af; }
.media.panels.held #pipeline-caption { color: var(--accent); }

/* Slide 3: the embedded eChant editor */

.media.editor { height: 620px; display: flex; flex-direction: column; }

.editor-stage-wrap {
  position: relative;
  flex: 1;
  min-height: 0;
  border: 1px solid var(--rule);
  border-radius: 6px;
  overflow: hidden;
  background: var(--paper);
}

#editor-stage { position: absolute; inset: 0; }

/* The recording stands in for the editor in its box, e.g. in the speaker view's previews. */
.media.editor > video { flex: 1; min-height: 0; object-fit: contain; }

.key-cap {
  position: absolute;
  left: 24px;
  top: 68px;
  padding: 12px 20px;
  border-radius: 10px;
  background: rgba(17, 24, 39, 0.92);
  color: #ffffff;
  font: 600 24px/1 var(--sans);
  letter-spacing: 0.02em;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.12s ease, transform 0.12s ease;
  pointer-events: none;
}

.key-cap.on { opacity: 1; transform: none; }

/* Inspector clicks are shown too, but as an action rather than a key. */
.key-cap.action {
  background: rgba(161, 30, 59, 0.92);
  font-size: 20px;
  font-weight: 500;
}

.media.editor figcaption .source { display: block; margin-top: 4px; color: #9ca3af; }

.media.editor.editing figcaption #editor-caption { color: var(--accent); }

.deck-url {
  margin-left: 14px;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
}

.media figcaption {
  margin-top: 12px;
  font-size: 16px;
  line-height: 1.4;
  color: var(--muted);
}

/* Fragments stacked over a video: same box, caption pinned to its bottom. */

.stage { align-self: start; }

.reveal .stage > .media {
  align-self: stretch;
  width: 100%;
  margin: 0;
  display: flex;
  flex-direction: column;
  background: var(--paper);
}

.stage .fill { flex: 1; display: flex; align-items: center; }

/* Slide 2: MEI typed and rendered live by the Verovio toolkit */

.stage.wide { width: 100%; }

/* A full-width stage is bounded by height, or the video would outgrow the slide. */
.stage.wide .media > video {
  width: auto;
  max-width: 100%;
  max-height: 540px;
  margin: 0 auto;
}

.media.live { height: 560px; }

.live-panes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  flex: 1;
  min-height: 0;
  border: 1px solid var(--rule);
  border-radius: 6px;
  overflow: hidden;
}

.live-panes .pane {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 28px 34px;
}

.live-panes .pane + .pane { border-left: 1px solid var(--rule); }

.pane-label {
  margin-bottom: 22px !important;
  font: 600 17px/1 var(--sans);
  letter-spacing: 0.06em;
  color: var(--muted);
}

.code-editor { position: relative; flex: 1; min-height: 0; }

.pane-name { margin-left: 12px; font-weight: 400; letter-spacing: 0; color: var(--ink); }

/* The textarea lies transparently over the highlighted copy, so editing keeps the colours. */
#live-mei,
#live-input {
  position: absolute;
  inset: 0;
  margin: 0;
  padding: 0;
  border: 0;
  font: 400 25px/1.55 ui-monospace, "SF Mono", Menlo, monospace;
  white-space: pre-wrap;
  overflow-wrap: break-word;
  overflow: auto;
}

#live-mei { color: var(--ink); }

#live-input {
  color: transparent;
  -webkit-text-fill-color: transparent;
  background: transparent;
  caret-color: var(--accent);
  resize: none;
  outline: none;
}

.pane-hint,
.pane-status {
  margin-left: 14px;
  font-weight: 400;
  letter-spacing: 0;
  color: #9ca3af;
}

.pane-status { display: none; color: var(--accent); }

.pane-action {
  display: none;
  margin-left: 14px;
  padding: 0;
  border: 0;
  background: none;
  font: 600 17px var(--sans);
  letter-spacing: 0.02em;
  color: var(--accent);
  cursor: pointer;
}

.media.editing .pane-hint { display: none; }
.media.editing .pane-action { display: inline; }
.media.invalid .pane-status { display: inline; }

#live-mei .tag { color: #9ca3af; }
#live-mei .attr { color: var(--body); }
#live-mei .val { color: var(--accent); }

#live-mei .caret {
  display: inline-block;
  width: 2px;
  height: 1.05em;
  margin-left: 1px;
  vertical-align: text-bottom;
  background: var(--accent);
  animation: caret-blink 1.06s steps(1) infinite;
}

@keyframes caret-blink { 50% { opacity: 0; } }

#live-render {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
}

#live-render svg { max-width: 100%; max-height: 100%; }

.media .live-fallback { display: none; }

.media.fallback-active .live-panes,
.media.fallback-active .editor-stage-wrap { display: none; }
.media.fallback-active .live-fallback { display: block; }

.foot {
  position: absolute;
  left: 88px;
  right: 88px;
  bottom: 34px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 15px;
  color: var(--muted);
}

.foot img { height: 30px; }

.foot .page { margin-left: auto; font-variant-numeric: tabular-nums; }

.reveal .progress { height: 3px; color: var(--accent); background: transparent; }

/* Title */

.title-slide .frame { padding: 72px 88px 80px; }

.title-slide .logo-full { width: 360px; display: block; }

.title-slide .title-block { margin: auto 0; }

.title-slide h1 { max-width: 1100px; }

.subtitle {
  margin-top: 28px !important;
  font-family: var(--serif);
  font-style: italic;
  font-size: 38px;
  color: var(--muted);
}

.title-neumes {
  display: block;
  width: 990px;
  margin-top: 80px;
}

.team {
  position: absolute;
  left: 88px;
  bottom: 32px;
  font-size: 20px;
  letter-spacing: 0.02em;
  color: var(--ink);
}

/* Claude Code */

.stat {
  font-family: var(--serif);
  font-size: 40px;
  line-height: 0.78;
  color: var(--muted);
}

.stat .num {
  font-size: 104px;
  font-weight: 500;
  color: var(--accent);
}

.stat-label {
  margin-top: 18px !important;
  font-size: 20px;
  line-height: 1.4;
  color: var(--body);
}

.chart {
  display: block;
  width: 100%;
  height: auto;
  font-family: var(--sans);
}

.cycle { display: block; width: 100%; height: auto; }

.cycle .box { fill: none; stroke: var(--rule); rx: 6; }
.cycle .box-title { font: 600 25px var(--sans); fill: var(--ink); }
.cycle .box-sub { font: 400 17px var(--sans); fill: var(--muted); }
.cycle .flow { fill: none; stroke: #9ca3af; stroke-width: 1.5; }
.cycle .loop-label { font: 400 17px var(--sans); fill: var(--accent); }