/* zonedata.org slide mode. Stage is a fixed 1280x720 canvas scaled to the viewport; print = one slide per 16:9 page. */
body.deck { overflow: hidden; height: 100vh; height: 100dvh; display: flex; flex-direction: column; font-family: var(--sans); }
.stage-wrap { flex: 1 1 auto; position: relative; overflow: hidden; }
.stage {
  position: absolute; left: 50%; top: 50%; width: 1280px; height: 720px;
  margin: -360px 0 0 -640px; transform-origin: 50% 50%;
  background: var(--paper);
}
.slide {
  position: absolute; inset: 0; display: none; flex-direction: column;
  padding: 64px 88px 56px; background: var(--paper); color: var(--ink);
}
.slide.current { display: flex; }
.slide .body { flex: 1 1 auto; display: flex; flex-direction: column; justify-content: center; min-height: 0; }
.slide::after {
  content: attr(data-foot); position: absolute; left: 88px; right: 88px; bottom: 26px;
  font-family: var(--sans); font-size: 14px; color: var(--faint); letter-spacing: 0.02em;
  display: flex; justify-content: space-between;
}
.slide::before {
  content: ""; position: absolute; left: 88px; right: 88px; bottom: 52px;
  border-top: 2px solid var(--accent);
}

.eyebrow {
  font-family: var(--sans); font-size: 15px; text-transform: uppercase; letter-spacing: 0.12em;
  color: var(--accent); margin: 0 0 18px; font-weight: 500;
}
.slide h1 { font-family: var(--serif); font-size: 60px; line-height: 1.12; font-weight: 600; margin: 0 0 24px; letter-spacing: -0.015em; text-wrap: balance; max-width: 1000px; }
.slide h2 { font-family: var(--serif); font-size: 42px; line-height: 1.18; font-weight: 600; margin: 0 0 30px; letter-spacing: -0.01em; text-wrap: balance; max-width: 1050px; }
.slide p, .slide li, .slide td, .slide dd { font-family: var(--serif); font-size: 24px; line-height: 1.45; }
.slide p { margin: 0 0 14px; }
.slide .lede { font-size: 28px; color: var(--ink-soft); max-width: 900px; }
.slide .authors { font-family: var(--sans); font-size: 20px; color: var(--muted); margin-top: 28px; }
.slide .url { font-family: var(--mono); font-size: 20px; color: var(--accent); }
.slide .big { font-size: 34px; line-height: 1.35; max-width: 1000px; margin-bottom: 36px; }
.slide .sub { font-family: var(--sans); font-size: 17px; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 10px;
  display: inline-block; width: fit-content; align-self: flex-start; padding: 5px 12px; border-radius: 4px; background: var(--accent); color: #fff; }   /* label bar: very dark gray, white text (Leo 2026-09-26; the muted gray was too dim) */
[data-theme="dark"] .slide .sub { background: var(--accent); color: #191918; }
@media (prefers-color-scheme: dark) { :root:not([data-theme]) .slide .sub { background: var(--accent); color: #191918; } }
.slide .note { font-size: 20px; color: var(--muted); margin: 22px 0 0; max-width: 1000px; }
.slide .note.strong { color: var(--ink); font-weight: 600; }
.slide .aside p { font-size: 21px; color: var(--ink-soft); }

.slide ul, .slide ol, .slide dl { margin: 0; }
.slide ul.pills { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 12px; }
.slide ul.pills li { font-family: var(--sans); font-size: 20px; padding: 10px 18px; border: 1px solid var(--rule); border-radius: 999px; background: var(--paper-raised); margin: 0; }
.slide ul.checks { list-style: none; padding: 0; }
.slide ul.checks li { position: relative; padding-left: 44px; margin-bottom: 18px; font-size: 26px; }
.slide ul.checks li::before { content: ""; position: absolute; left: 6px; top: 14px; width: 18px; height: 10px; border-left: 3px solid var(--accent); border-bottom: 3px solid var(--accent); transform: rotate(-45deg); }
.slide ul.compact { padding-left: 26px; }
.slide ul.compact li { font-size: 21px; margin-bottom: 8px; }
.slide dl.ask { display: grid; grid-template-columns: 170px 1fr; gap: 14px 24px; align-items: baseline; }
.slide dl.ask dt { font-family: var(--sans); font-size: 17px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); font-weight: 500; }
.slide dl.ask dd { margin: 0; }

.cols { display: grid; grid-template-columns: 1.15fr 1fr; gap: 48px; align-items: start; }

.slide table.data { width: 100%; border-collapse: collapse; }
.slide table.data th { font-family: var(--sans); font-size: 16px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); text-align: left; font-weight: 500; padding: 0 16px 10px 0; border-bottom: 2px solid var(--accent); }
.slide table.data td { padding: 12px 16px 12px 0; border-bottom: 1px solid var(--rule); vertical-align: top; font-size: 22px; }
.slide table.data td:first-child { font-weight: 600; width: 40%; }
.slide table.scope td { padding: 9px 16px 9px 0; font-size: 21px; }
.slide table.scope td:first-child { font-weight: 400; width: 55%; }
.slide table.scope td:last-child { color: var(--muted); }

.slide figure.diagram { margin: 0; padding: 22px 28px; font-size: 20px; line-height: 1.55; }
.slide figure.diagram li, .slide figure.diagram p, .slide figure.diagram div { font-family: var(--mono); font-size: 20px; }
.slide .diagram.flow li + li::before { padding-left: 2rem; }
.slide .diagram.timeline .span { height: 1.1rem; }

.slide.title .body { justify-content: center; }
.slide.title .eyebrow { margin-bottom: 30px; }
.slide.close h2 { font-size: 40px; }

/* Controls bar */
.controls {
  flex: 0 0 auto; display: flex; align-items: center; gap: 10px;
  padding: 8px 16px; border-top: 1px solid var(--rule); background: var(--paper-raised);
  font-size: 0.8125rem; color: var(--muted);
}
.controls .brand { font-size: 1rem; margin-right: 8px; }
.controls button, .controls a.pdf {
  font: inherit; color: var(--ink-soft); background: none; border: 1px solid var(--rule);
  border-radius: 4px; padding: 4px 10px; cursor: pointer; text-decoration: none;
}
.controls button:hover, .controls a.pdf:hover { border-color: var(--accent); color: var(--accent); }
.controls button:disabled { opacity: 0.35; cursor: default; }
.controls .prev, .controls .next { font-size: 1.25rem; line-height: 1; padding: 2px 12px; }
.controls .counter { font-family: var(--mono); min-width: 5em; text-align: center; }
.controls .spacer { flex: 1; }
.controls button:focus-visible, .controls a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
body.fullscreen .controls { display: none; }

/* Help overlay */
.help { position: fixed; inset: 0; background: rgba(0,0,0,0.45); display: flex; align-items: center; justify-content: center; z-index: 10; }
.help-box { background: var(--paper-raised); color: var(--ink); border: 1px solid var(--rule); border-radius: 8px; padding: 1.5rem 1.75rem; max-width: 26rem; font-size: 0.9375rem; }
.help-box h3 { margin: 0 0 0.75rem; font-family: var(--serif); }
.help-box dl { display: grid; grid-template-columns: auto 1fr; gap: 0.35rem 1rem; margin: 0 0 1rem; }
.help-box dt { font-family: var(--mono); font-size: 0.8125rem; color: var(--accent); }
.help-box dd { margin: 0; }
.help-box button { font: inherit; padding: 0.35rem 0.9rem; border: 1px solid var(--rule); border-radius: 4px; background: none; color: var(--ink); cursor: pointer; }

/* Presenter view: ?presenter in the URL. Current slide left, next + timer + notes right. */
body.presenter { display: grid; grid-template-columns: 62% 1fr; grid-template-rows: minmax(0, 1fr) auto; }
body.presenter .stage-wrap { grid-column: 1; grid-row: 1; min-height: 0; }
body.presenter .controls { grid-column: 1 / 3; grid-row: 2; }
.presenter-panel { grid-column: 2; grid-row: 1; min-height: 0; min-width: 0; border-left: 1px solid var(--rule); display: flex; flex-direction: column; background: var(--paper-raised); }
.presenter-panel .label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); margin: 0 0 0.5rem; display: flex; gap: 0.75rem; align-items: center; }
.presenter-top { padding: 1rem 1.25rem; border-bottom: 1px solid var(--rule); }
.clock { display: flex; align-items: baseline; gap: 1.25rem; font-family: var(--mono); margin-bottom: 1rem; }
.clock .time { font-size: 2rem; color: var(--ink); }
.clock .elapsed { font-size: 2rem; color: var(--accent); }
.clock .reset, .presenter-panel .load-notes { font: inherit; font-size: 0.75rem; padding: 0.2rem 0.6rem; border: 1px solid var(--rule); border-radius: 4px; background: none; color: var(--ink-soft); cursor: pointer; }
.mini { position: relative; width: 100%; aspect-ratio: 16 / 9; overflow: hidden; border: 1px solid var(--rule); background: var(--paper); }
.mini .stage { transform-origin: 0 0; left: 0; top: 0; margin: 0; }
.presenter-panel .notes { flex: 1; overflow: auto; padding: 1rem 1.25rem; }
.notes-body { font-family: var(--serif); font-size: 1.125rem; line-height: 1.55; color: var(--ink); }
.notes-body .muted, .notes-body .meta { color: var(--muted); font-family: var(--sans); font-size: 0.875rem; }
.notes-body h4 { font-family: var(--sans); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); margin: 1rem 0 0.35rem; }
.notes-body ul { padding-left: 1.2rem; }
.notes-body blockquote { margin: 0.5rem 0; padding-left: 0.9rem; border-left: 3px solid var(--accent); color: var(--ink-soft); font-style: italic; }

/* Print: one slide per 16:9 page, light theme regardless of screen setting */
@media print {
  @page { size: 13.333in 7.5in; margin: 0; }
  :root:not(#_) {
    --ink: #1a1a1a; --ink-soft: #3a3a37; --muted: #6b6b66; --faint: #8a8983;
    --paper: #fcfbf9; --paper-raised: #ffffff; --rule: #e4e1da;
    --accent: #14384f; --accent-soft: #e8eef2; --code-bg: #f4f2ed;
  }
  html, body, body.deck { height: auto; overflow: visible; display: block; background: var(--paper); }
  .stage-wrap { position: static; overflow: visible; }
  .stage { position: static; width: auto; height: auto; margin: 0; transform: none !important; }
  .slide { position: relative; inset: auto; display: flex !important; width: 13.333in; height: 7.5in; page-break-after: always; break-after: page; overflow: hidden; }
  .slide:last-child { page-break-after: auto; break-after: auto; }
  .controls, .help, .presenter-panel { display: none !important; }
}

/* hidden attribute must win over the display rules above */
.help[hidden], .presenter-panel[hidden], .notes-file[hidden] { display: none !important; }
.stage-wrap { min-height: 0; }
.slide .version { font-family: var(--sans); font-size: 16px; color: var(--faint); margin-top: 26px; }
/* v7: proof-of-concept slide (raw zone rows beside delta events) */
.slide.poc .sub { margin: 10px 0 6px; }
.slide pre { font-family: var(--mono); font-size: 15px; line-height: 1.45; background: var(--code-bg); border: 1px solid var(--rule); border-radius: 8px; padding: 10px 14px; margin: 0 0 6px; white-space: pre; overflow: hidden; max-width: 100%; }
.slide.poc .note { font-size: 19px; margin-top: 8px; }
.slide.poc .note.strong { margin-top: 4px; }
.slide.close h2 { font-size: 64px; margin-bottom: 20px; }
.slide.close .ask-block { border-left: 6px solid var(--accent); background: var(--accent-soft, rgba(20,56,79,0.08)); padding: 16px 22px; margin: 0 0 20px; }
.slide.close .ask-block p { margin: 0; font-size: 24px; line-height: 1.4; }
.slide.close .ask-block p.frame { margin-top: 8px; font-family: var(--sans); font-size: 18px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--accent); font-weight: 600; }
.slide.close .big { font-size: 26px; }
.slide.close p.url { margin-top: 20px; }
.slide.poc pre { font-size: 15px; }
.slide.close p.url { margin-top: 28px; }

/* v11: backup slide after the closing slide */
.slide.backup .eyebrow { color: var(--muted); letter-spacing: 0.14em; }

/* v12: CSG benefits table */
.slide table.benefits td:first-child { width: 30%; }
.slide table.benefits td { font-size: 20px; padding: 10px 16px 10px 0; }
/* POC slide: the delta as a plain-language event list (2026-09-26) */
.slide.poc h2 { margin-bottom: 16px; }
.slide.poc pre { flex: 0 0 auto; }
.slide ul.events { list-style: none; padding: 0; margin: 2px 0 0 0; }
.slide ul.events > li { margin: 0 0 10px 0; font-size: 19px; line-height: 1.3; }
.slide ul.events > li > strong { font-family: var(--sans); font-weight: 600; margin-right: 10px; }
.slide ul.events .when { font-family: var(--sans); font-size: 15px; color: var(--muted); margin-left: 10px; }
.slide ul.events ul { list-style: disc; padding-left: 32px; margin-top: 3px; }
.slide ul.events ul li { font-size: 17px; line-height: 1.4; margin: 0; }
/* Table headers match the sub labels: very dark gray, white text (Leo 2026-09-26) */
.slide table.data th, .slide table th { background: var(--accent); color: #fff; font-family: var(--sans); text-transform: uppercase; letter-spacing: 0.06em; font-size: 17px; font-weight: 600; padding: 8px 12px; border-color: var(--accent); }
[data-theme="dark"] .slide table.data th, [data-theme="dark"] .slide table th { background: var(--accent); color: #191918; border-color: var(--accent); }
@media (prefers-color-scheme: dark) { :root:not([data-theme]) .slide table th { background: var(--accent); color: #191918; border-color: var(--accent); } }