/* =============================================================================
   deck.css — reusable HTML-slide framework (shadcn design tokens, zero deps)
   Drives layout, typography, fragment reveals, chrome, and print/PDF export.
   Talk-specific palette + motif live in theme.css (loaded after this file).
   ========================================================================== */

/* ---- shadcn design tokens (zinc neutral) -------------------------------- */
:root {
  --background: 0 0% 100%;
  --foreground: 240 10% 3.9%;
  --card: 0 0% 100%;
  --card-foreground: 240 10% 3.9%;
  --popover: 0 0% 100%;
  --popover-foreground: 240 10% 3.9%;
  --primary: 240 5.9% 10%;
  --primary-foreground: 0 0% 98%;
  --secondary: 240 4.8% 95.9%;
  --secondary-foreground: 240 5.9% 10%;
  --muted: 240 4.8% 95.9%;
  --muted-foreground: 240 3.8% 46.1%;
  --accent: 240 4.8% 95.9%;
  --accent-foreground: 240 5.9% 10%;
  --border: 240 5.9% 90%;
  --input: 240 5.9% 90%;
  --ring: 240 5.9% 10%;
  --radius: 0.625rem;

  /* deck framework knobs (overridable by theme.css) */
  --slide-w: 1280px;
  --slide-h: 720px;
  --slide-pad: 64px;
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Code",
    Menlo, Consolas, monospace;
}

/* Dark slides opt in with class="slide--dark" (see theme.css for palette). */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  color: hsl(var(--foreground));
  background: hsl(var(--muted));
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

/* =============================================================================
   Deck stage + slides
   ========================================================================== */
.deck {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  overflow: hidden;
}

/* The stage holds the fixed-aspect slide canvas and is scaled by deck.js
   so a 1280x720 design always fits the viewport without media-query churn. */
.stage {
  position: relative;
  width: var(--slide-w);
  height: var(--slide-h);
  transform-origin: center center;
}

.slide {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  justify-content: center;
  padding: var(--slide-pad);
  background: hsl(var(--background));
  color: hsl(var(--foreground));
  overflow: hidden;
}

.slide.is-active {
  display: flex;
}

/* Kicker / eyebrow label above a heading. */
.kicker {
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: hsl(var(--muted-foreground));
  margin: 0 0 0.75rem;
}

.slide h1 {
  font-size: 4.5rem;
  line-height: 1.02;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0;
}

.slide h2 {
  font-size: 3rem;
  line-height: 1.08;
  font-weight: 750;
  letter-spacing: -0.02em;
  margin: 0;
}

.slide h3 {
  font-size: 1.75rem;
  line-height: 1.2;
  font-weight: 650;
  letter-spacing: -0.01em;
  margin: 0;
}

.slide p {
  font-size: 1.5rem;
  line-height: 1.45;
  color: hsl(var(--muted-foreground));
  margin: 1rem 0 0;
  max-width: 52ch;
}

.lead {
  font-size: 1.875rem !important;
  color: hsl(var(--foreground)) !important;
}

.muted {
  color: hsl(var(--muted-foreground));
}

.mono {
  font-family: var(--font-mono);
}

.center {
  align-items: center;
  text-align: center;
}

.center p {
  margin-left: auto;
  margin-right: auto;
}

/* =============================================================================
   Reusable shadcn-flavored components
   ========================================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-size: 0.8rem;
  font-weight: 600;
  line-height: 1;
  padding: 0.4em 0.7em;
  border-radius: calc(var(--radius) - 2px);
  border: 1px solid hsl(var(--border));
  background: hsl(var(--secondary));
  color: hsl(var(--secondary-foreground));
}

.card {
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  background: hsl(var(--card));
  color: hsl(var(--card-foreground));
  padding: 1.5rem 1.75rem;
  box-shadow: 0 1px 2px hsl(var(--foreground) / 0.04);
}

kbd {
  font-family: var(--font-mono);
  font-size: 0.85em;
  padding: 0.15em 0.45em;
  border: 1px solid hsl(var(--border));
  border-bottom-width: 2px;
  border-radius: 0.4em;
  background: hsl(var(--secondary));
}

/* tool-name / code chip */
.chip {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 0.1em 0.4em;
  border-radius: 0.35em;
  background: hsl(var(--muted));
  border: 1px solid hsl(var(--border));
}

/* Tables (used by the "name shapes the signal" slide) */
table.deck-table {
  border-collapse: collapse;
  width: 100%;
  margin-top: 1.5rem;
  font-size: 1.25rem;
}

table.deck-table th,
table.deck-table td {
  text-align: left;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid hsl(var(--border));
  vertical-align: top;
}

table.deck-table th {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: hsl(var(--muted-foreground));
  font-weight: 600;
}

table.deck-table td.mono {
  font-family: var(--font-mono);
  font-size: 1.05rem;
}

/* Big numeric stats */
.stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.stat .stat-num {
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1;
}

.stat .stat-label {
  font-size: 1rem;
  color: hsl(var(--muted-foreground));
  margin-top: 0.5rem;
}

/* Grids for two-up / three-up content */
.grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.75rem;
}

.grid.cols-2 {
  grid-template-columns: 1fr 1fr;
}

.grid.cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

/* QR code block */
.qr {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.qr img,
.qr svg {
  width: 160px;
  height: 160px;
  border-radius: calc(var(--radius) - 2px);
  background: #fff;
  padding: 8px;
  border: 1px solid hsl(var(--border));
  display: block;
}

.qr.qr--lg img,
.qr.qr--lg svg {
  width: 280px;
  height: 280px;
}

.qr.qr--sm img,
.qr.qr--sm svg {
  width: 104px;
  height: 104px;
}

.qr .qr-label {
  font-size: 0.8rem;
  color: hsl(var(--muted-foreground));
  font-weight: 500;
}

/* Corner placement helper */
.corner {
  position: absolute;
  top: var(--slide-pad);
  right: var(--slide-pad);
  margin: 0;
}

/* Visual placeholder — for assets the speaker supplies later. Never faked. */
.visual {
  margin-top: 1.75rem;
  border: 2px dashed hsl(var(--border));
  border-radius: var(--radius);
  background: repeating-linear-gradient(
    45deg,
    hsl(var(--muted)) 0,
    hsl(var(--muted)) 12px,
    hsl(var(--background)) 12px,
    hsl(var(--background)) 24px
  );
  color: hsl(var(--muted-foreground));
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 280px;
  padding: 2rem;
  font-family: var(--font-mono);
  font-size: 1rem;
}

.visual::before {
  content: "▢ ";
}

/* =============================================================================
   Fragments — incremental reveals on click (no fancy transitions)
   ========================================================================== */
.fragment {
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.12s linear;
}

.fragment.is-visible {
  opacity: 1;
  visibility: visible;
}

/* "deflate" the last log line on the comedic-peak slide once revealed */
.fragment.deflate.is-visible {
  opacity: 0.55;
}

/* =============================================================================
   Speaker notes — in the DOM for SEO/AEO; hidden on stage, shown via overlay
   ========================================================================== */
.notes {
  display: none;
}

.notes-overlay {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  max-height: 38vh;
  overflow: auto;
  background: hsl(240 10% 3.9% / 0.96);
  color: hsl(0 0% 98%);
  padding: 1.25rem 1.5rem;
  font-size: 1rem;
  line-height: 1.5;
  z-index: 50;
  border-top: 1px solid hsl(0 0% 100% / 0.1);
}

.notes-overlay[hidden] {
  display: none;
}

.notes-overlay h4 {
  margin: 0 0 0.4rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.6;
}

/* =============================================================================
   Chrome — progress dots, slide number, help overlay
   ========================================================================== */
.deck-chrome {
  position: fixed;
  z-index: 40;
  pointer-events: none;
}

.progress {
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  display: flex;
  gap: 7px;
}

.progress .dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: hsl(var(--muted-foreground) / 0.4);
  transition: background 0.15s, transform 0.15s;
}

.progress .dot.is-active {
  background: hsl(var(--muted-foreground));
  transform: scale(1.35);
}

.slide-num {
  right: 18px;
  bottom: 14px;
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  color: hsl(var(--muted-foreground));
}

.help-overlay {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: grid;
  place-items: center;
  background: hsl(240 10% 3.9% / 0.6);
}

.help-overlay[hidden] {
  display: none;
}

.help-overlay .help-card {
  background: hsl(var(--background));
  color: hsl(var(--foreground));
  border-radius: var(--radius);
  padding: 1.75rem 2rem;
  max-width: 420px;
  box-shadow: 0 24px 60px hsl(240 10% 3.9% / 0.4);
}

.help-overlay h4 {
  margin: 0 0 1rem;
}

.help-overlay dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.6rem 1rem;
  margin: 0;
  font-size: 0.95rem;
}

.help-overlay dt {
  white-space: nowrap;
}

.help-overlay dd {
  margin: 0;
  color: hsl(var(--muted-foreground));
}

/* =============================================================================
   Transcript — visible, crawlable prose for SEO/AEO (below the deck)
   Hidden during the live presentation; revealed by ?read=1 or print, and
   always present in the DOM so search/answer engines read it.
   ========================================================================== */
.transcript {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
  padding: 6rem 1.5rem 8rem;
  font-size: 1.0625rem;
  line-height: 1.7;
  color: hsl(var(--foreground));
  background: hsl(var(--background));
}

/* On screen the deck covers everything; the transcript sits in normal flow
   underneath for crawlers. We pull it out of view for presenters but keep it
   accessible to bots and to ?read=1 readers. */
body:not(.reading) .transcript {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

body.reading .deck,
body.reading .deck-chrome {
  display: none;
}

body.reading {
  background: hsl(var(--background));
}

.transcript h1 {
  font-size: 2.25rem;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
}

.transcript h2 {
  font-size: 1.5rem;
  margin: 2.5rem 0 0.5rem;
  letter-spacing: -0.01em;
}

.transcript .dek {
  color: hsl(var(--muted-foreground));
  font-size: 1.25rem;
  margin-top: 0;
}

.transcript a {
  color: hsl(var(--primary));
  text-underline-offset: 2px;
}

/* =============================================================================
   Print / PDF export  (triggered by .is-print on <html>, set via ?print=1)
   Every slide becomes its own landscape page with all fragments revealed.
   ========================================================================== */
@page {
  size: 1280px 720px;
  margin: 0;
}

html.is-print,
html.is-print body {
  background: #fff;
}

html.is-print .deck {
  position: static;
  display: block;
  overflow: visible;
}

html.is-print .stage {
  transform: none !important;
  width: var(--slide-w);
  height: auto;
}

html.is-print .slide {
  position: relative;
  display: flex !important;
  width: var(--slide-w);
  height: var(--slide-h);
  page-break-after: always;
  break-after: page;
}

html.is-print .fragment {
  opacity: 1 !important;
  visibility: visible !important;
}

html.is-print .deck-chrome,
html.is-print .notes-overlay,
html.is-print .help-overlay,
html.is-print .transcript {
  display: none !important;
}

@media print {
  html,
  body {
    background: #fff;
  }
  .deck {
    position: static;
    display: block;
    overflow: visible;
  }
  .stage {
    transform: none !important;
    width: var(--slide-w);
    height: auto;
  }
  .slide {
    position: relative;
    display: flex !important;
    page-break-after: always;
    break-after: page;
  }
  .fragment {
    opacity: 1 !important;
    visibility: visible !important;
  }
  .deck-chrome,
  .notes-overlay,
  .help-overlay,
  .transcript {
    display: none !important;
  }
}

/* Respect reduced-motion: kill the small fragment fade. */
@media (prefers-reduced-motion: reduce) {
  .fragment {
    transition: none;
  }
}