/* Inquirex Presentation Theme
 * Warm amber palette tuned to the Vanta WAVES background (color 0x432800).
 * Screen: transparent slides letting animated waves show through.
 * Print:  white bg, dark-grey body text, black headers.
 */

@import url("https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@400;600;700;900&family=Bebas+Neue&family=Dosis:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;600&display=swap");

:root {
  /* Warm amber / espresso palette — harmonizes with Vanta 0x432800 waves */
  --brand: #e9b872; /* honey gold */
  --brand-light: #fde68a; /* pale gold */
  --accent: #fb923c; /* warm coral */
  --accent-light: #fed7aa; /* peach */
  --highlight: #ffd166; /* bright amber, for emphasis */

  --bg-dark: #0a0604; /* espresso (only used under print) */
  --bg-surface: rgba(
    20,
    12,
    4,
    0.78
  ); /* translucent panel for content blocks */
  --panel-border: rgba(233, 184, 114, 0.22);

  --text-primary: #fef8e7; /* cream */
  --text-muted: #cdb28a; /* muted sand */
  --text-soft: rgba(254, 248, 231, 0.88);

  --success: #86efac;
  --code-bg: rgba(14, 9, 4, 0.92);
  --code-border: rgba(233, 184, 114, 0.18);
}

/* -------------------------------------------------------------------------
 * Vanta background layer
 * ------------------------------------------------------------------------- */

html,
body {
  background: #0a0604; /* fallback while vanta initializes */
}

#vanta-bg {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none; /* let reveal.js receive keyboard / mouse */
}

/* Subtle warm vignette to deepen the edges and settle text in the middle. */
#vanta-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse at center,
    rgba(10, 6, 4, 0) 0%,
    rgba(10, 6, 4, 0.35) 65%,
    rgba(10, 6, 4, 0.7) 100%
  );
  pointer-events: none;
}

/* Make reveal transparent so vanta shows through */
.reveal-viewport,
.reveal,
.reveal .backgrounds,
.reveal .slide-background,
.reveal .slide-background-content {
  background: transparent !important;
}

.reveal .slides {
  background: transparent;
  /* reveal.js sets `top:50%; left:50%` inline on .slides to center it.
   * Override: keep horizontal centering, but anchor the bottom at 10% from the
   * viewport bottom so content lifts upward. */
  inset: 50% auto -10% 50% !important;
}

/* Lift the slides above the vanta layer */
.reveal {
  position: relative;
  z-index: 1;
}

/* -------------------------------------------------------------------------
 * Typography
 * ------------------------------------------------------------------------- */

.reveal {
  font-family: "Dosis", "Helvetica Neue", sans-serif;
  font-weight: 600;
  color: var(--text-primary);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.55); /* carves text against waves */
}

.reveal h1,
.reveal h2,
.reveal h3 {
  font-family: "Bebas Neue", "Dosis", sans-serif;
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  text-shadow:
    0 2px 10px rgba(0, 0, 0, 0.55),
    0 1px 0 rgba(0, 0, 0, 0.35);
}

.reveal h1 {
  font-size: 3em;
  font-weight: 500;
  letter-spacing: 0.03em;
  background: linear-gradient(135deg, #fff3b0 0%, #f0a020 55%, #b45309 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
  /* Tight 3px dark core + soft 20px halo — drop-shadow because the text fill
   * is transparent (gradient via background-clip), so text-shadow won't render. */
  filter: drop-shadow(0 0 3px rgba(0, 0, 0, 0.85))
    drop-shadow(0 0 20px rgba(0, 0, 0, 0.6));
}

.reveal h2 {
  font-family: "Barlow Condensed", "Bebas Neue", "Dosis", sans-serif;
  font-weight: 600;
  font-size: 2em;
  letter-spacing: 0.01em;
  margin-bottom: 0.5em;
  color: #f0a020;
  text-shadow: 0 0 10px rgba(0, 0, 0, 0.9);
}

.reveal h3 {
  font-size: 1.4em;
  color: var(--accent-light);
  font-weight: 400;
  letter-spacing: 0.04em;
}

.reveal h4 {
  font-family: "Dosis", "Helvetica Neue", sans-serif;
  font-weight: 700;
  font-size: 1.15em;
  letter-spacing: 0;
  color: var(--text-primary);
}

/* -------------------------------------------------------------------------
 * Typewriter effect (see assets/js/typewriter.js)
 * ------------------------------------------------------------------------- */

.reveal .tw-slide .tw-letter {
  display: inline-block;
  white-space: pre; /* keep spaces visible */
  opacity: 0;
}

.reveal .tw-slide.tw-playing .tw-letter {
  animation: tw-reveal 0.12s ease-out forwards;
  /* per-letter `animation-delay` is set inline by typewriter.js */
}

@keyframes tw-reveal {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal .tw-slide .tw-letter,
  .reveal .tw-slide.tw-playing .tw-letter {
    opacity: 1;
    animation: none;
  }
}

.reveal p,
.reveal li {
  font-size: 0.88em;
  line-height: 1.6;
  color: var(--text-soft);
}

.reveal small {
  color: var(--text-muted);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.reveal em {
  color: var(--highlight);
  font-style: normal;
  font-weight: 700;
}

.reveal strong {
  color: #ffffff;
  font-weight: 700;
}

.reveal img.image-with-shadow {
  opacity: 0.7;
  top: 2%;
  right: 10%;
  width: 600px;
  min-height: 800px;
  margin-top: -20px;
  position: absolute;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(4px);
  text-shadow: none;
  border-radius: 10px;
  border: 1px solid var(--panel-border);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(4px);
}

/* -------------------------------------------------------------------------
 * Blockquotes, tables, code, lists
 * ------------------------------------------------------------------------- */

.reveal blockquote {
  background: var(--bg-surface);
  border-left: 4px solid var(--brand);
  padding: 0.9em 1.3em;
  border-radius: 0 10px 10px 0;
  font-style: italic;
  color: var(--text-primary);
  width: 90%;
  margin: 0.5em auto;
  font-size: 0.85em;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  text-shadow: none;
}

.reveal table {
  border-collapse: separate;
  border-spacing: 0;
  margin: 0.5em auto;
  font-size: 0.72em;
  background: var(--bg-surface);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.reveal table th {
  background: linear-gradient(
    180deg,
    rgba(251, 146, 60, 0.25),
    rgba(233, 184, 114, 0.12)
  );
  color: var(--brand-light);
  font-family: "Bebas Neue", "Dosis", sans-serif;
  font-weight: 400;
  letter-spacing: 0.06em;
  padding: 0.6em 0.9em;
  border-bottom: 1px solid var(--panel-border);
  text-align: left;
  text-shadow: none;
}

.reveal table td {
  padding: 0.5em 0.9em;
  border-bottom: 1px solid rgba(233, 184, 114, 0.08);
  color: var(--text-soft);
  text-shadow: none;
}

.reveal table tr:last-child td {
  border-bottom: none;
}

.reveal table tr:nth-child(even) td {
  background: rgba(233, 184, 114, 0.04);
}

/* Mermaid diagrams (rendered inline by assets/js/mermaid-init.js) */
.reveal .mermaid {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0.5em auto;
  background: transparent;
  width: 100%;
  max-width: 1100px;
  text-shadow: none;
}

.reveal .mermaid svg {
  max-width: 100%;
  height: auto;
  filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.45));
}

/* Let the labels use our display font, at 2x mermaid's default size (~16px → 32px) */
.reveal .mermaid .nodeLabel,
.reveal .mermaid .edgeLabel,
.reveal .mermaid foreignObject div,
.reveal .mermaid text {
  font-family: "Dosis", "Helvetica Neue", sans-serif !important;
  font-size: 32px !important;
}

/* Two-column table wrapper (see `## 11 Typed Data Types` in slides.md) */
.reveal .two-col-tables {
  display: flex;
  flex-direction: row;
  gap: 1.2em;
  align-items: flex-start;
  justify-content: center;
  width: 100%;
}

.reveal .two-col-tables > div {
  flex: 1 1 50%;
  min-width: 0;
}

.reveal .two-col-tables table {
  width: 100%;
  margin: 0;
  font-size: 0.65em;
}

.reveal pre {
  width: 95%;
  margin: 0.4em auto;
  font-size: 0.4964em;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.55);
  border-radius: 12px;
  border: 1px solid var(--code-border);
  overflow-x: auto;
  overflow-y: hidden;
  white-space: nowrap;
}

.reveal pre code {
  font-family: "JetBrains Mono", "Fira Code", monospace;
  padding: 1em 1.2em;
  line-height: 1.5;
  background: var(--code-bg);
  border-radius: 12px;
  max-height: 520px;
  text-shadow: none;
}

.reveal code {
  font-family: "JetBrains Mono", "Fira Code", monospace;
  background: rgba(251, 146, 60, 0.15);
  padding: 0.1em 0.38em;
  border-radius: 5px;
  font-size: 0.9em;
  color: var(--highlight);
  border: 1px solid rgba(251, 146, 60, 0.18);
  text-shadow: none;
}

.reveal pre code {
  background: var(--code-bg);
  color: var(--text-primary);
  border: none;
}

.reveal ul,
.reveal ol {
  text-align: left;
  margin-left: 0;
}

.reveal li {
  margin-bottom: 0.35em;
}

.reveal li::marker {
  color: var(--brand);
}

/* -------------------------------------------------------------------------
 * Admonitions / callouts (Obsidian / GFM syntax — see assets/js/admonitions.js)
 * ------------------------------------------------------------------------- */

.reveal .admonition {
  --adm-accent: var(--brand);
  --adm-bg: rgba(20, 12, 4, 0.82);
  --adm-icon: "ℹ";

  background: var(--adm-bg);
  border-left: 4px solid var(--adm-accent);
  border-radius: 0 10px 10px 0;
  padding: 0.9em 1.3em 0.9em 1.5em;
  margin: 0.6em auto;
  width: 90%;
  text-align: left;
  color: var(--text-primary);
  text-shadow: none;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.reveal .admonition-title {
  font-family: "Bebas Neue", "Dosis", sans-serif;
  font-weight: 400;
  font-size: 1.15em;
  letter-spacing: 0.1em;
  color: var(--adm-accent);
  margin-bottom: 0.35em;
  display: flex;
  align-items: baseline;
  gap: 0.55em;
  text-shadow: none;
}

.reveal .admonition-title::before {
  content: var(--adm-icon);
  font-family: "Apple Color Emoji", "Segoe UI Emoji", system-ui, sans-serif;
  font-size: 1.05em;
  line-height: 1;
}

.reveal .admonition-body {
  font-size: 0.88em;
  line-height: 1.55;
  color: var(--text-soft);
}

.reveal .admonition-body > *:first-child {
  margin-top: 0;
}
.reveal .admonition-body > *:last-child {
  margin-bottom: 0;
}

.reveal .admonition-body p,
.reveal .admonition-body li {
  text-shadow: none;
}

/* Type variants */

.reveal .admonition-info,
.reveal .admonition-note {
  --adm-accent: #7dd3fc;
  --adm-bg: rgba(10, 28, 44, 0.82);
  --adm-icon: "ℹ";
}

.reveal .admonition-tip,
.reveal .admonition-hint,
.reveal .admonition-success {
  --adm-accent: #86efac;
  --adm-bg: rgba(12, 34, 22, 0.82);
  --adm-icon: "✦";
}

.reveal .admonition-important {
  --adm-accent: var(--highlight);
  --adm-bg: rgba(40, 28, 10, 0.85);
  --adm-icon: "★";
}

.reveal .admonition-warning {
  --adm-accent: #fb923c;
  --adm-bg: rgba(46, 24, 8, 0.85);
  --adm-icon: "⚠";
}

.reveal .admonition-caution,
.reveal .admonition-danger {
  --adm-accent: #f87171;
  --adm-bg: rgba(46, 14, 14, 0.85);
  --adm-icon: "⛔";
}

/* -------------------------------------------------------------------------
 * Title slide
 * ------------------------------------------------------------------------- */

.title-slide h1 {
  font-size: 4.2em;
  margin-bottom: 0.1em;
  letter-spacing: 0.04em;
}

.title-slide h3 {
  font-size: 1.3em;
  font-weight: 400;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

/* -------------------------------------------------------------------------
 * Links, hr, progress, slide number
 * ------------------------------------------------------------------------- */

.reveal a {
  color: var(--brand-light);
  text-decoration: none;
  border-bottom: 1px dotted rgba(233, 184, 114, 0.4);
  transition:
    color 0.15s ease,
    border-color 0.15s ease;
}

.reveal a:hover {
  color: var(--highlight);
  border-bottom-color: var(--highlight);
}

.reveal hr {
  border: none;
  border-top: 1px solid rgba(233, 184, 114, 0.25);
  margin: 1em 0;
}

.reveal .slide-number {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.6em;
  color: var(--text-muted);
  background: transparent;
}

.reveal .progress {
  height: 3px;
  color: var(--brand);
}

.reveal .fragment.highlight-current-blue.current-fragment {
  color: var(--brand-light);
}

/* Push content ~250px down from the stage top so slide bodies sit in the
 * lower half of the frame (matches the embedded-iframe look on the landing
 * page). Paired with `center: false` in Reveal.initialize() — without that,
 * reveal.js sets an inline `top` on each section and overrides this. */
.reveal .slides > section,
.reveal .slides > section > section {
  padding: 250px 40px 20px 40px;
}

/* First heading sits flush with the padding — no extra browser margin. */
.reveal .slides > section > h1:first-child,
.reveal .slides > section > h2:first-child,
.reveal .slides > section > h3:first-child {
  margin-top: 0;
}

/* Title slides use the same 250px anchor so they line up with content slides. */
.reveal .slides > section.title-slide {
  padding-top: 250px;
}

/* -------------------------------------------------------------------------
 * Print / PDF export
 * ------------------------------------------------------------------------- */

/* -------------------------------------------------------------------------
 * reveal.js `?print-pdf` mode — paginated PDF export.
 *
 * reveal.js adds `html.print-pdf` + `html.reveal-print` when `?print-pdf` is
 * in the URL. It rewrites layout so every slide becomes its own `.pdf-page`
 * with `page-break-after: always`. Our animated Vanta canvas is fixed and
 * only renders on the first page by default — so we capture a static PNG
 * of it on load (see index.html `captureVantaSnapshot`) and apply that
 * snapshot as the repeating background of every paginated slide here.
 *
 * The fallback gradient (used before the snapshot is ready, or if the
 * WebGL read fails) approximates the warm Vanta hue.
 * ------------------------------------------------------------------------- */

html.print-pdf {
  /* Fallback gradient if `--vanta-snapshot` never gets set (WebGL read
   * blocked, canvas never rendered, etc.). */
  --vanta-snapshot: linear-gradient(
    135deg,
    #1a0f06 0%,
    #281c0a 45%,
    #0a0604 100%
  );
}

/* Hide the fixed Vanta layer in paginated mode — we're using the static
 * snapshot for each page. */
html.print-pdf #vanta-bg {
  display: none !important;
}

/* Unset our screen-only inset override so reveal's own print-pdf layout wins. */
html.print-pdf .reveal .slides {
  inset: auto !important;
}

/* Each paginated page gets the snapshot as its background. */
html.print-pdf .reveal .slides .pdf-page,
html.print-pdf .reveal .slides > section {
  background-image: var(--vanta-snapshot) !important;
  background-size: cover !important;
  background-position: center center !important;
  background-repeat: no-repeat !important;
  background-color: #0a0604 !important; /* behind the image, in case it's a gradient */
  print-color-adjust: exact !important;
  -webkit-print-color-adjust: exact !important;
}

/* reveal.js's own print-pdf CSS sets body/reveal background to white via its
 * black.css theme. Restore transparency so our page backgrounds show. */
html.print-pdf,
html.print-pdf body,
html.print-pdf .reveal,
html.print-pdf .reveal-viewport,
html.print-pdf .reveal .backgrounds,
html.print-pdf .reveal .slide-background,
html.print-pdf .reveal .slide-background-content {
  background: transparent !important;
  background-image: none !important;
}

/* Text palette in print-pdf — keep the warm screen colors rather than the
 * black-on-white defaults reveal's print CSS enforces. */
html.print-pdf .reveal,
html.print-pdf .reveal p,
html.print-pdf .reveal li,
html.print-pdf .reveal small,
html.print-pdf .reveal td,
html.print-pdf .reveal blockquote {
  color: var(--text-soft) !important;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.55) !important;
}

html.print-pdf .reveal h1 {
  background: linear-gradient(
    135deg,
    #fff3b0 0%,
    #f0a020 55%,
    #b45309 100%
  ) !important;
  -webkit-background-clip: text !important;
  background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  color: transparent !important;
  filter: drop-shadow(0 0 3px rgba(0, 0, 0, 0.85))
    drop-shadow(0 0 20px rgba(0, 0, 0, 0.6)) !important;
  text-shadow: none !important;
}

html.print-pdf .reveal h2 {
  color: #f0a020 !important;
  text-shadow: 0 0 10px rgba(0, 0, 0, 0.9) !important;
}

html.print-pdf .reveal h3 {
  color: var(--accent-light) !important;
}
html.print-pdf .reveal h4 {
  color: var(--text-primary) !important;
}
html.print-pdf .reveal em {
  color: var(--highlight) !important;
}
html.print-pdf .reveal strong {
  color: #ffffff !important;
}

html.print-pdf .reveal a,
html.print-pdf .reveal a:link,
html.print-pdf .reveal a:visited {
  color: var(--brand-light) !important;
}

/* Content blocks — preserve the translucent floating-panel look. */
html.print-pdf .reveal blockquote {
  background: var(--bg-surface) !important;
  color: var(--text-primary) !important;
  border-left: 4px solid var(--brand) !important;
}

html.print-pdf .reveal table {
  background: var(--bg-surface) !important;
  border: 1px solid var(--panel-border) !important;
}
html.print-pdf .reveal table th {
  background: linear-gradient(
    180deg,
    rgba(251, 146, 60, 0.25),
    rgba(233, 184, 114, 0.12)
  ) !important;
  color: var(--brand-light) !important;
  border-bottom: 1px solid var(--panel-border) !important;
}
html.print-pdf .reveal table td {
  color: var(--text-soft) !important;
  border-bottom: 1px solid rgba(233, 184, 114, 0.08) !important;
}
html.print-pdf .reveal table tr:nth-child(even) td {
  background: rgba(233, 184, 114, 0.04) !important;
}

html.print-pdf .reveal pre,
html.print-pdf .reveal pre code {
  background: var(--code-bg) !important;
  color: var(--text-primary) !important;
  border: 1px solid var(--code-border) !important;
}
html.print-pdf .reveal code {
  background: rgba(251, 146, 60, 0.15) !important;
  color: var(--highlight) !important;
  border: 1px solid rgba(251, 146, 60, 0.18) !important;
}

/* Typewriter letters: always visible in export. */
html.print-pdf .reveal .tw-letter {
  opacity: 1 !important;
  animation: none !important;
  display: inline !important;
}

/* -------------------------------------------------------------------------
 * Viewport-specific layout
 *
 * The reveal stage is fixed at 1280×720, but these CSS rules still shape
 * the layout *inside* the stage. They use viewport orientation as the signal.
 * ------------------------------------------------------------------------- */

/* Wide screens (landscape): same 250px top anchor as the default. */
@media (orientation: landscape) {
  .reveal .slides > section,
  .reveal .slides > section > section {
    padding-top: 250px;
  }

  .reveal .slides > section.title-slide {
    padding-top: 250px;
  }
}

/* Tall screens (portrait): let code blocks grow vertically into the extra room. */
@media (orientation: portrait) {
  .reveal pre code {
    max-height: none;
  }

  .reveal pre {
    max-height: calc(100vh - 160px);
  }
}

/* Narrow viewports: reveal.js scales the 1280×720 stage to fit, which
 * visually compresses the 250px top padding and pulls the heading upward.
 * Counteract by adding more padding-top as the viewport shrinks.
 * The inner section > section rule handles vertical stacks. */
@media (max-width: 963px) {
  .reveal .slides > section,
  .reveal .slides > section > section,
  .reveal .slides > section.title-slide {
    padding-top: 380px !important;
  }
}

@media (max-width: 750px) {
  .reveal .slides > section,
  .reveal .slides > section > section,
  .reveal .slides > section.title-slide {
    padding-top: 520px !important;
  }
}

@media (max-width: 560px) {
  .reveal .slides > section,
  .reveal .slides > section > section,
  .reveal .slides > section.title-slide {
    padding-top: 640px !important;
  }
}