/*
 * CHPL-BRANDED theme for Reveal.js — 2026-08-17
 *
 * Forked from the IUG 2026 theme (still the layout: split beige/white title
 * slide with logo; white content body with a beige footer bar) and RE-COLORED
 * to CHPL's own brand palette at Ray's direction. The layout is IUG's; the
 * colors are ours.
 *
 * ⭐ SOURCE OF TRUTH for the palette: ~/claude/design-system/brand.yml
 *    (identical to the hexes inside assets/CHPL_Brandmark_Primary.svg).
 *    Do not hand-pick a "CHPL-ish" color — read it from brand.yml.
 *
 *   BRAND HUES        navy #16243a · blue #3291c2 · green #41bb89
 *                     purple #7d49a9 · red #ea4f49 · gold #f9ae12
 *
 * ⚠ MOST BRAND HUES ARE TOO LIGHT FOR TEXT. Measured against white and
 *   against the beige title ground (#F3E4C5), only navy and purple clear
 *   4.5:1 unmodified; gold is 1.89:1 on white and unusable as ink. The house
 *   fix already exists — design-system/validate_palette.py::derive_chip_colors
 *   darkens a hue until it clears the surface. Text colors below are those
 *   derived inks, NOT raw hues:
 *
 *   USED HERE
 *     Navy    #16243a  headings, footer/dark grounds   (15.6:1 white · 12.4:1 beige)
 *     Red-ink #a43733  .accent — emphasis              ( 6.6:1 white ·  5.3:1 beige)
 *     Blue-ink #236688 links                           ( 6.3:1 white ·  5.0:1 beige)
 *     Blue    #3291c2  link hover; links on dark grounds (raw hue — fine on navy)
 *     Charcoal #53575A body text (not a brand hue; inherited, high contrast)
 *     Beige   #F3E4C5  footer bar + title ground (INHERITED FROM IUG, not CHPL brand)
 *     Gray    #E8E8E8  subtle backgrounds
 *
 * ⚠ brand.yml's own constraint: these are "Chrome/accent use only — never for
 *   semantic value->mark." The bronze/silver layer colors in the slide diagram
 *   are SEMANTIC and deliberately stay outside this palette.
 *
 * ⚠ The beige ground is the one un-CHPL thing left. It works and the footer
 *   matches it, but if the deck should be fully brand-native that is the next
 *   thing to change — and it is a taste call, not a contrast one.
 */

/* -- Web font fallback (Inter is closest free match to Aptos/BrownStd) --
 * VENDORED 2026-08-19, deliberately. This used to be an @import from
 * fonts.googleapis.com, which quietly made the deck need the internet: with no
 * network the whole thing fell back to Arial (-> Liberation Sans on this host),
 * different metrics from the ones check-fit.py measured. The files now live in
 * ../fonts/ and ship with the deck, so offline and online render identically.
 * Inter is SIL Open Font License 1.1 -- see ../fonts/LICENSE.txt.
 * Regenerate: see ../fonts/README.md.
 *
 * NOTE ON BRAND: Inter is NOT a CHPL-sanctioned typeface. The brand guidelines
 * (~/Documents/CHPL_BrandGuidelines/, p.22) name BrownStd (licensed, Lineto) as
 * the primary face and *Arial* as the approved digital alternate. Inter sits in
 * the stack as the closest free match to BrownStd; Arial remains behind it.
 */
/* latin-ext */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url('../fonts/inter-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
/* latin */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url('../fonts/inter-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
/* latin-ext */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/inter-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
/* latin */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/inter-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
/* latin-ext */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/inter-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
/* latin */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('../fonts/inter-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
/* latin-ext */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/inter-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
/* latin */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/inter-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}


/* -- Base overrides on top of white.css -- */

/*
 * Font stack priority:
 *   1. Aptos / Aptos Display — IUG 2026 template font (Windows/Office)
 *   2. BrownStd — CHPL brand font (licensed, Lineto)
 *   3. Inter — closest free web match
 *   4. Arial — CHPL-approved digital fallback
 *
 * (Palette is documented once, at the top of this file. Don't restate it here —
 *  the duplicate block that used to live at this spot drifted out of sync.)
 */

.reveal {
  font-family: 'Aptos', 'BrownStd', 'Inter', Arial, sans-serif;
  font-size: 42px;
  font-weight: 300;
  color: #53575A;
}

.reveal h1,
.reveal h2,
.reveal h3,
.reveal h4,
.reveal h5,
.reveal h6 {
  font-family: 'Aptos Display', 'Aptos', 'BrownStd', 'Inter', Arial, sans-serif;
  color: #16243a;
  font-weight: 700;
  text-transform: none;
  letter-spacing: normal;
}

.reveal h1 { font-size: 1.8em; }
.reveal h2 { font-size: 1.4em; }
.reveal h3 { font-size: 1.1em; }

.reveal a {
  color: #236688;
  text-decoration: none;
}

.reveal a:hover {
  color: #3291c2;
  text-decoration: underline;
}

/* Accent class for emphasis text */
.reveal .accent {
  color: #a43733;
  font-weight: 700;
}

.reveal .blue {
  color: #236688;
}

.reveal .navy {
  color: #16243a;
}

/* =============================================
   NAVIGATION CONTROLS — move above footer bar
   ============================================= */

.reveal .controls {
  bottom: calc(100px * var(--rv-scale, 1) + 10px) !important;
}

/* Slide number: top-right, e.g. "3/16" */
.reveal .slide-number {
  position: fixed;
  top: 12px;
  right: 16px;
  bottom: auto;
  left: auto;
  font-size: 0.5em;
  color: #808285;
  background: none;
}

/* =============================================
   TITLE / CLOSING SLIDES — split layout
   Left: white panel with logo
   Right: beige background (via data-background)
   ============================================= */

.reveal .title-slide {
  text-align: left;
  padding: 0 !important;
}

/* White logo panel — lives OUTSIDE .reveal in the DOM
   so CSS transforms don't break position: fixed centering */
.title-logo-panel {
  position: fixed;
  top: 0;
  left: 0;
  width: 28%;
  height: 100vh;
  background: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
}

.title-logo-panel img {
  width: 80%;
  max-width: 300px;
  /* OPTICAL centring, not geometric. The panel already centres the image BOX
     exactly (measured: equal gaps at 16:9, 16:10 and 3:2), but the brandmark is
     bottom-heavy — the airy "Hamilton County" arc is at the top and the dense
     wordmark sits under it, putting the mark's ink centroid 23.2px below the
     box centre on a 440px-tall asset, i.e. 5.3% of its own height. Centring the
     box therefore READS as sitting low. Shift by that measured 5.3%; the unit is
     % of the element's own height, so it holds at every scale.
     Re-measure if the asset is ever replaced. */
  transform: translateY(-5.3%);
}

/* Title content positioned on the right */
.reveal .title-slide .title-content {
  margin-left: 30%;
  padding: 0 2em;
  text-align: left;
  z-index: 51;
  position: relative;
}

.reveal .title-slide .title-content h1 {
  font-size: 1.6em;
  color: #16243a;
  margin: 0 0 0.15em 0;
  line-height: 1.2;
}

.reveal .title-slide .title-content h2 {
  font-size: 0.7em;
  color: #16243a;
  font-weight: 400;
  margin: 0 0 1em 0;
  opacity: 0.75;
}

.reveal .title-slide .title-content p {
  font-size: 0.5em;
  color: #53575A;
  margin: 0;
  line-height: 1.7;
}

/* CHPL logo on title/closing slides */
.reveal .title-slide .chpl-logo {
  max-width: 200px;
  margin-top: 1.2em;
}

/* =============================================
   CONTENT SLIDES — beige footer bar with logo
   ============================================= */

/* Persistent footer bar on all non-title slides
   Template: 14.4% of slide height, logo is 86% of bar height */
.reveal .footer-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  /* Sized in CANVAS px scaled by --rv-scale (published by the deck's JS from
     Reveal.getScale()), because the space reserved for this bar is padding
     inside the scaled canvas. Fixed 100px chrome against a shrinking
     reservation is what let the bar eat the last line of slide 7 on a short
     laptop window. Now both move together: bar 100 canvas px, reservation 110,
     so there is always 10 canvas px of daylight at every window shape.
     --rv-scale falls back to 1, which is the old behaviour, if JS never runs. */
  height: calc(100px * var(--rv-scale, 1));
  background: #F3E4C5;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: calc(8px * var(--rv-scale, 1));
  box-sizing: border-box;
  z-index: 100;
}

.reveal .footer-bar img {
  height: calc(86px * var(--rv-scale, 1));
  width: auto;
}

.reveal .footer-bar .footer-chpl-logo {
  height: calc(52px * var(--rv-scale, 1));
  margin-right: auto;
  margin-left: calc(12px * var(--rv-scale, 1));
}

/* Ensure slide content doesn't overlap the footer */
/* Space reserved for the footer bar, in canvas px.
   The bar itself is now sized as calc(100px * var(--rv-scale)) — see .footer-bar
   — so bar and reservation scale together and this 110 is a true 10px of
   clearance at EVERY window shape, not just the one the deck was tuned on.
   (Before 2026-08-19 the bar was fixed 100px window chrome while this padding
   scaled with the canvas: on a short laptop window the reservation fell to
   ~81px against a 100px bar and the bar covered the last line of the slide.)
   Do not raise it to "be safe" — every px here comes straight out of the
   slide's content budget. */
.reveal .slides section {
  padding-bottom: 110px;
}

/* Title slides don't need footer padding */
.reveal .slides section.title-slide {
  padding-bottom: 0;
}

/* Dark background slides (navy) */
.reveal section[data-background-color="#16243a"] h1,
.reveal section[data-background-color="#16243a"] h2,
.reveal section[data-background-color="#16243a"] h3,
.reveal section[data-background-color="#16243a"] p,
.reveal section[data-background-color="#16243a"] li,
.reveal section[data-background-color="#0E2841"] h1,
.reveal section[data-background-color="#0E2841"] h2,
.reveal section[data-background-color="#0E2841"] h3,
.reveal section[data-background-color="#0E2841"] p,
.reveal section[data-background-color="#0E2841"] li {
  color: #FFFFFF;
}

.reveal section[data-background-color="#16243a"] a,
.reveal section[data-background-color="#0E2841"] a {
  color: #3291c2;
}

/* Lists */
.reveal ul,
.reveal ol {
  text-align: left;
  margin-left: 1em;
}

.reveal li {
  margin-bottom: 0.4em;
  font-size: 0.85em;
}

/* Code blocks */
.reveal pre {
  font-size: 0.55em;
  box-shadow: none;
  border: 1px solid #E8E8E8;
  border-radius: 4px;
}

.reveal code {
  font-family: 'Fira Code', 'JetBrains Mono', 'Source Code Pro', monospace;
}

.reveal p code,
.reveal li code {
  background: #E8E8E8;
  padding: 0.1em 0.3em;
  border-radius: 3px;
  font-size: 0.9em;
}

/* Images */
.reveal img {
  border: none;
  box-shadow: none;
}

/* Two-column layout helper */
.reveal .columns {
  display: flex;
  gap: 2em;
}

.reveal .columns .col {
  flex: 1;
}

/* Screenshot styling */
.reveal .screenshot {
  border: 2px solid #E8E8E8;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* Tables */
.reveal table {
  border-collapse: collapse;
}

.reveal table th {
  background: #16243a;
  color: #FFFFFF;
  padding: 0.4em 0.6em;
  font-weight: 600;
}

.reveal table td {
  border-bottom: 1px solid #E8E8E8;
  padding: 0.3em 0.6em;
}

.reveal table tr:nth-child(even) td {
  background: #f9f7f3;
}

/* =============================================
   MOBILE / SMALL SCREENS
   ============================================= */

/* ⭐ 2026-08-19 — THE FONT-SHRINK RULE THAT USED TO LIVE HERE IS GONE.
 * It was `.reveal { font-size: 28px }`, and with a FIXED canvas it did the
 * opposite of what it looks like it does. Reveal authors every slide inside
 * the canvas and then scales the whole canvas to the viewport, so cutting the
 * canvas font 42 -> 28 does not "fit the phone" — it shrinks text that was
 * already being scaled to 0.30. Measured on a 390px phone: list items landed
 * at 6.3 CSS px on screen. On an iPad in portrait (768px, where the rule also
 * fired) 12.3px. The rule is a leftover from a fluid-layout assumption.
 * The apparent-size knob for a fixed canvas is the CANVAS, not the font —
 * see the mobileCanvas() block in templates/presentation.html.j2.
 *
 * The 820px breakpoint below matches scrollActivationWidth in that same file.
 * ⚠ THEY MUST STAY EQUAL: below it the deck is a scrolling reading page on a
 *   portrait canvas; above it, the presenting deck. A gap between the two
 *   numbers means a window that reads as one and is styled as the other.
 */
@media screen and (max-width: 820px) {

  /* Stack title slide vertically instead of split layout */
  .title-logo-panel {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    z-index: 50;
  }

  .title-logo-panel img {
    width: auto;
    max-width: none;
    max-height: 60px;
    transform: none;  /* top bar, not a centred panel — nothing to optically centre */
  }

  .reveal .title-slide .title-content {
    margin-left: 0;
    margin-top: 60px;
    padding: 0.5em 1em;
    text-align: center;
  }

  .reveal .title-slide .title-content h1 {
    font-size: 1.2em;
  }

  .reveal .title-slide .title-content h2 {
    font-size: 0.6em;
  }

  /* Smaller footer */
  .reveal .footer-bar {
    height: calc(60px * var(--rv-scale, 1));
  }

  .reveal .footer-bar img {
    height: calc(50px * var(--rv-scale, 1));
  }

  .reveal .controls {
    bottom: 65px !important;
  }

  .reveal .slides section {
    padding-bottom: 70px;
  }

  /* 2026-08-19: was 0.75em — a leftover from the era when the phone got the
     landscape canvas and every px had to be clawed back. The portrait canvas
     pays for full-size list text now; check-fit.py's mobile pass is what says
     whether it still fits. */
  .reveal li {
    font-size: 0.85em;
  }

  .reveal pre {
    font-size: 0.45em;
  }
}

/* =============================================
   TITLE SLIDE — VERSION STAMP + QR
   Added 2026-08-18. The deck is published publicly at
   rayvoelker.github.io/2026-08/our-own-copy/, so slide 1 carries its own
   version stamp and a scannable link to the canonical copy.

   ⚠ The version <p> lives inside .title-content, whose `p` rule is
   (0,3,1) — a plain .deck-version selector LOSES to it. The
   `.title-content p.deck-version` form below is deliberate; do not
   "simplify" it or the size and margin silently revert.
   ============================================= */

.reveal .title-slide .title-meta {
  display: flex;
  /* flex-start, not flex-end: the byline's first line ("Ray Voelker") tops out
     level with the QR panel. Bottom-aligning instead hung the name 60px below
     the QR's top edge, which read as two unrelated blocks. */
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5em;
  flex-wrap: wrap;
}

.reveal .title-slide .title-byline {
  flex: 1 1 auto;
}

/* Kill reveal's inherited top margin on the first byline paragraph so the flex
   top edge really is the top of the text, not the top of a margin above it. */
.reveal .title-slide .title-byline > p:first-child {
  margin-top: 0;
}

.reveal .title-slide .title-content p.deck-version {
  margin-top: 0.85em;
  font-size: 0.42em;
  letter-spacing: 0.08em;
  /* ⚠ NO text-transform: uppercase here. It renders the semver "v" as "V1.0.0",
     which is not how a version is written. The string is digits either way, so
     the transform bought nothing and cost correctness. */
  color: #16243a;
  opacity: 0.7;
  line-height: 1.4;
}

.reveal .title-slide .title-qr {
  flex: 0 0 auto;
  margin: 0;
  text-align: center;
}

/* ⚠ reveal's white theme gives every `section img` a border + box-shadow.
   Both are cleared here: a framed QR reads as a picture of a QR, and the
   shadow eats into the quiet zone that scanners need. */
.reveal .title-slide .title-qr img {
  display: block;
  width: 150px;
  height: 150px;
  padding: 8px;
  margin: 0;
  background: #FFFFFF;
  border: 0;
  box-shadow: none;
  border-radius: 3px;
}

.reveal .title-slide .title-qr figcaption {
  margin-top: 0.45em;
  font-size: 0.32em;
  line-height: 1.35;
  color: #53575A;
}

/* Mobile: the byline/QR row stacks and centres with the rest of the title.
   Matters more now than it used to — scanning the QR opens the deck on a
   phone, so the title slide's small-screen form is a real reading surface. */
@media screen and (max-width: 820px) {
  .reveal .title-slide .title-meta {
    justify-content: center;
    align-items: center;
    flex-direction: column;
    gap: 1em;
  }

  .reveal .title-slide .title-qr img {
    width: 120px;
    height: 120px;
  }
}

/* =============================================
   SCROLL VIEW (reveal's own mobile reading mode)
   ============================================= */

/* Reveal flattens the deck into a scrolling page below scrollActivationWidth.
 * The footer bar is fixed WINDOW chrome — correct for one slide filling the
 * screen, wrong for a page you scroll, where it would sit over the text for
 * the whole read and eat ~15% of a phone screen permanently. The brandmark
 * still opens the read: the title page's logo panel is the first thing on it.
 * Added 2026-08-19 with the mobile reading pass. */
.reveal-viewport.reveal-scroll .footer-bar {
  display: none !important;
}

/* ...and with no bar there is nothing to reserve space for. On a scrolling page
   that reservation was 110-ish canvas px of dead air under every slide — and it
   was the difference between "The shape of a lakehouse architecture" fitting a
   phone page and running 37px past it. */
.reveal-viewport.reveal-scroll .slides section {
  padding-bottom: 0;
}