/* ═══════════════════════════════════════════════════════════
   VINETUM TOXICUM: A Poisoner's Theme
   Vintage apothecary aesthetic for a talk on poisoning
   the AI safety net.  Parchment, ink, ox-blood, verdigris,
   and brass.  Engraved rules, wax seals, marginalia.
   ═══════════════════════════════════════════════════════════ */

:root {
  /* Parchment palette: warm, slightly foxed paper */
  --parchment: #f1e6cf;
  --parchment-light: #f7eed9;
  --parchment-dark: #e6d6b3;
  --parchment-shade: #d9c79e;
  --parchment-deep: #b8a47a;

  /* Ink hierarchy: like iron-gall ink on aged paper */
  --ink: #1a1208;
  --ink-soft: #3d2f1c;
  --ink-faded: #6b5a3e;
  --ink-ghost: #94835e;

  /* Ox-blood: the poisoner's danger color */
  --blood: #7a1818;
  --blood-deep: #4f0f0f;
  --blood-light: #a02323;
  --blood-wash: rgba(122, 24, 24, 0.08);
  --blood-mark: rgba(122, 24, 24, 0.18);

  /* Verdigris: patinated copper, the apothecary green */
  --verdigris: #3f5236;
  --verdigris-deep: #283520;
  --verdigris-light: #5b7548;
  --verdigris-wash: rgba(63, 82, 54, 0.08);
  --verdigris-mark: rgba(63, 82, 54, 0.18);

  /* Brass: engraved accents, gilt edges */
  --brass: #9a7320;
  --brass-light: #c9a14a;
  --brass-deep: #6e4f10;
  --brass-wash: rgba(154, 115, 32, 0.1);

  /* Rust amber: tincture / warning */
  --rust: #8a4a1c;
  --rust-light: #b06530;
  --rust-wash: rgba(138, 74, 28, 0.1);

  /* Compatibility shims so framework rules don't break */
  --bg-primary: var(--parchment);
  --bg-secondary: var(--parchment-light);
  --bg-card: var(--parchment-light);
  --bg-code: #1f1812;
  --surface: var(--parchment-light);
  --text-primary: var(--ink);
  --text-secondary: var(--ink-soft);
  --text-muted: var(--ink-faded);
  --cyan: var(--brass);
  --cyan-dim: var(--brass-wash);
  --cyan-glow: var(--brass-wash);
  --red: var(--blood);
  --red-dim: var(--blood-wash);
  --red-glow: var(--blood-mark);
  --green: var(--verdigris);
  --green-dim: var(--verdigris-wash);
  --green-glow: var(--verdigris-mark);
  --amber: var(--rust);
  --amber-dim: var(--rust-wash);
  --blue: var(--verdigris-light);
  --blue-dim: var(--verdigris-wash);
  --purple: var(--blood-deep);
  --border: rgba(26, 18, 8, 0.18);
  --border-subtle: rgba(26, 18, 8, 0.08);
  --accent: var(--blood);
  --accent-dim: var(--blood-wash);
  --accent-glow: var(--blood-mark);

  /* Typography: engraver's choice
     --font-display: reserved for the largest, most dramatic
                     type (h1, h2, section numbers).  IM Fell
                     English's irregular letterforms shine at
                     size; at small sizes its italic reads
                     skinny.
     --font-heading: for everything smaller: h3, h4, card
                     titles, blockquotes, subtitles.  Cormorant
                     Garamond at semibold has presence without
                     the spidery italic feel. */
  --font-body: "Cormorant Garamond", "EB Garamond", Garamond, serif;
  --font-display: "IM Fell English", "Cormorant Garamond", serif;
  --font-heading: "Cormorant Garamond", "EB Garamond", Garamond, serif;
  --font-sc: "IM Fell English SC", "IM Fell English", serif;
  --font-mono: "Special Elite", "JetBrains Mono", "Courier New", monospace;
}

/* ═══════════════════════════════════════════════════════════
   BACKGROUND: Aged paper with fibers and foxing
   ═══════════════════════════════════════════════════════════ */

/* Cormorant Garamond optically reads ~25% smaller than the
   framework's sans default at the same px.  Lift the rem base
   so all rem-based sizing scales up proportionally. */
html {
  font-size: 22px;
}

body {
  background: var(--parchment);
  color: var(--ink);
  font-family: var(--font-body);
}

/* Paper grain: replaces the cyber scanlines */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    /* foxing spots: random sepia stains */
    radial-gradient(ellipse 320px 200px at 12% 22%, rgba(122, 80, 28, 0.06), transparent 60%),
    radial-gradient(ellipse 260px 180px at 88% 78%, rgba(122, 80, 28, 0.05), transparent 60%),
    radial-gradient(ellipse 180px 140px at 72% 18%, rgba(80, 50, 20, 0.04), transparent 60%),
    radial-gradient(ellipse 220px 160px at 22% 86%, rgba(100, 60, 20, 0.05), transparent 60%),
    radial-gradient(ellipse 140px 100px at 48% 52%, rgba(140, 90, 30, 0.03), transparent 60%),
    /* paper fiber */
    repeating-linear-gradient(
      32deg,
      transparent 0 6px,
      rgba(60, 40, 20, 0.012) 6px 7px
    ),
    repeating-linear-gradient(
      -45deg,
      transparent 0 9px,
      rgba(60, 40, 20, 0.01) 9px 10px
    );
  pointer-events: none;
  z-index: 1000;
  mix-blend-mode: multiply;
}

/* Repurpose the .bg-grid div as a vignette: no tech grid here */
.bg-grid {
  background-image:
    radial-gradient(
      ellipse at center,
      transparent 50%,
      rgba(60, 40, 18, 0.18) 100%
    );
  background-size: 100% 100%;
}

/* ═══════════════════════════════════════════════════════════
   SLIDE CHROME: Ornate filigree corners (engraved)
   ═══════════════════════════════════════════════════════════ */

.slide::before,
.slide::after {
  content: "";
  position: absolute;
  width: 76px;
  height: 76px;
  border: 1.5px solid var(--brass);
  opacity: 0.7;
  pointer-events: none;
  background:
    /* inner double rule */
    linear-gradient(var(--brass), var(--brass)) no-repeat 0 0/100% 1px,
    linear-gradient(var(--brass), var(--brass)) no-repeat 0 0/1px 100%,
    /* outer double rule */
    linear-gradient(var(--brass), var(--brass)) no-repeat 4px 4px/calc(100% - 4px) 1px,
    linear-gradient(var(--brass), var(--brass)) no-repeat 4px 4px/1px calc(100% - 4px);
  background-color: transparent;
}

.slide::before {
  top: 56px;
  left: 56px;
  border-right: none;
  border-bottom: none;
}
.slide::after {
  display: none;
}

/* Ornament at the inside corner: a fleuron */
.slide > .ornament-stamp,
.slide::marker { display: none; }

/* ═══════════════════════════════════════════════════════════
   TYPOGRAPHY: Letterpress, with engraved underlines
   ═══════════════════════════════════════════════════════════ */

h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 104px;
  line-height: 1.04;
  letter-spacing: -0.005em;
  color: var(--ink);
  background: none;
  -webkit-text-fill-color: var(--ink);
  text-shadow: 0 1px 0 rgba(255, 250, 235, 0.4);
}

h1 .accent,
h2 .accent {
  color: var(--blood);
  font-style: italic;
}

h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 60px;
  line-height: 1.15;
  letter-spacing: 0;
  color: var(--ink);
  position: relative;
}

/* Engraved double-rule with central fleuron under h2 */
h2 {
  padding-bottom: 36px;
  background-image:
    linear-gradient(90deg, var(--brass) 0, var(--brass) 110px, transparent 110px, transparent 170px, var(--brass) 170px, var(--brass) 280px),
    linear-gradient(90deg, var(--brass) 0, var(--brass) 110px, transparent 110px, transparent 170px, var(--brass) 170px, var(--brass) 280px);
  background-size: 280px 1px, 280px 1px;
  background-position: 0 calc(100% - 8px), 0 calc(100% - 12px);
  background-repeat: no-repeat;
}

h2::after {
  content: "❦";
  position: absolute;
  bottom: 0;
  left: 124px;
  width: 32px;
  text-align: center;
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1;
  color: var(--brass);
  background: none;
  border: none;
}

h3 {
  font-family: var(--font-heading);
  font-weight: 600;
  font-style: normal;
  font-size: 32px;
  color: var(--ink-soft);
  letter-spacing: 0;
}

p, li {
  font-family: var(--font-body);
  font-size: 32px;
  font-weight: 400;
  line-height: 1.45;
  color: var(--ink-soft);
}

strong {
  font-weight: 600;
  color: var(--ink);
}

em, i {
  color: var(--ink);
  font-style: italic;
}

.subtitle {
  font-family: var(--font-heading);
  font-style: normal;
  font-size: 40px;
  color: var(--ink-soft);
  font-weight: 500;
  letter-spacing: 0;
  margin-bottom: 1em;
}

/* Inline code: like a hand-set label on a bottle */
code {
  font-family: var(--font-mono);
  background: var(--parchment-dark);
  padding: 0.15em 0.5em;
  border-radius: 2px;
  font-size: 0.82em;
  color: var(--blood-deep);
  border: 1px solid var(--parchment-deep);
  box-shadow: none;
  vertical-align: 0.04em;
}

/* ═══════════════════════════════════════════════════════════
   COLOR UTILITIES (named after old theme tokens)
   ═══════════════════════════════════════════════════════════ */

.text-red { color: var(--blood); }
.text-green { color: var(--verdigris); }
.text-amber { color: var(--rust); }
.text-blue { color: var(--verdigris-light); }
.text-cyan { color: var(--brass); }
.text-muted { color: var(--ink-faded); }
.accent { color: var(--blood); font-style: italic; }

/* ═══════════════════════════════════════════════════════════
   SECTION LABEL: small caps with ornament
   ═══════════════════════════════════════════════════════════ */

.section-label {
  font-family: var(--font-sc);
  font-size: 0.95rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.35em;
  color: var(--blood);
  margin-bottom: 1.8em;
  display: flex;
  align-items: center;
  gap: 1em;
}

.section-label::before {
  content: "✥";
  font-size: 1.15em;
  color: var(--brass);
  animation: none;
}

.section-label::after {
  content: "";
  flex: 1;
  height: 0;
  border-top: 1px solid var(--brass);
  border-bottom: 1px solid var(--brass);
  padding-top: 3px;
  max-width: 220px;
  opacity: 0.6;
}

@keyframes blink {
  50% { opacity: 0.4; }
}

/* ═══════════════════════════════════════════════════════════
   SLIDE TYPE ACCENTS: Ribbon markers down the left margin
   ═══════════════════════════════════════════════════════════ */

.slide-vuln,
.slide-fix,
.slide-demo {
  padding-left: 2.5rem !important;
}

.slide-vuln {
  background:
    linear-gradient(90deg, var(--blood-wash) 0, transparent 80px);
  box-shadow: inset 5px 0 0 var(--blood),
              inset 9px 0 0 var(--parchment),
              inset 10px 0 0 var(--blood);
}
.slide-vuln::before {
  border-color: var(--blood) !important;
  opacity: 0.7 !important;
}

.slide-fix {
  background:
    linear-gradient(90deg, var(--verdigris-wash) 0, transparent 80px);
  box-shadow: inset 5px 0 0 var(--verdigris),
              inset 9px 0 0 var(--parchment),
              inset 10px 0 0 var(--verdigris);
}
.slide-fix::before {
  border-color: var(--verdigris) !important;
  opacity: 0.7 !important;
}

.slide-demo {
  background:
    linear-gradient(90deg, rgba(138, 74, 28, 0.055) 0, transparent 64px);
  box-shadow: inset 5px 0 0 var(--rust),
              inset 9px 0 0 var(--parchment),
              inset 10px 0 0 var(--rust);
}
.slide-demo::before {
  border-color: var(--rust) !important;
  opacity: 0.45 !important;
}

/* ═══════════════════════════════════════════════════════════
   ATTACK / DEFENSE STEPS: Apothecary recipe entries
   ═══════════════════════════════════════════════════════════ */

.attack-step {
  background: var(--parchment-light);
  border: 1px solid var(--ink-faded);
  border-left: 4px solid var(--blood);
  border-radius: 0;
  padding: 0.75em 1.4em;
  margin: 0.5em 0;
  font-size: 1.2rem;
  position: relative;
  box-shadow:
    1px 1px 0 var(--parchment-shade),
    2px 2px 0 var(--parchment-deep);
}

.attack-step::before {
  content: "☠";
  position: absolute;
  top: -10px;
  right: 14px;
  font-size: 16px;
  color: var(--blood);
  background: var(--parchment);
  padding: 0 6px;
  line-height: 1;
}

.attack-step .step-num {
  font-family: var(--font-heading);
  font-style: normal;
  color: var(--blood);
  font-weight: 700;
  margin-right: 0.6em;
  font-size: 1.6em;
  line-height: 1;
  vertical-align: -0.05em;
}

.defense-step {
  background: var(--parchment-light);
  border: 1px solid var(--ink-faded);
  border-left: 4px solid var(--verdigris);
  border-radius: 0;
  padding: 0.75em 1.4em;
  margin: 0.5em 0;
  font-size: 1.15rem;
  position: relative;
  box-shadow:
    1px 1px 0 var(--parchment-shade),
    2px 2px 0 var(--parchment-deep);
}

.defense-step::before {
  content: "℞";
  position: absolute;
  top: -12px;
  right: 14px;
  font-size: 22px;
  color: var(--verdigris);
  background: var(--parchment);
  padding: 0 6px;
  line-height: 1;
  font-family: var(--font-display);
}

.defense-step .step-num {
  font-family: var(--font-heading);
  font-style: normal;
  color: var(--verdigris);
  font-weight: 700;
  margin-right: 0.6em;
  font-size: 1.6em;
  line-height: 1;
  vertical-align: -0.05em;
}

/* ═══════════════════════════════════════════════════════════
   PIPELINE: Apothecary bottles in a row
   ═══════════════════════════════════════════════════════════ */

.pipeline {
  display: flex;
  align-items: stretch;
  gap: 0.6rem;
  margin: 2rem 0;
  flex-wrap: wrap;
}

.pipeline-box {
  background: var(--parchment-light);
  border: 1px solid var(--ink-soft);
  border-radius: 2px;
  padding: 1.2rem 1.4rem;
  text-align: center;
  min-width: 180px;
  position: relative;
  box-shadow:
    inset 0 0 0 1px var(--parchment),
    inset 0 0 0 2px var(--brass),
    2px 2px 0 var(--parchment-deep);
}

.pipeline-box::before {
  content: "";
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 26px;
  height: 8px;
  background: var(--brass);
  border-radius: 2px 2px 0 0;
  box-shadow: 0 -1px 0 var(--brass-deep) inset;
}

.pipeline-box .label {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.35rem;
  color: var(--ink);
  margin-bottom: 0.3rem;
  letter-spacing: 0.02em;
}

.pipeline-box .sublabel {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--ink-faded);
  letter-spacing: 0.02em;
}

.pipeline-box.compromised {
  border-color: var(--blood);
  background:
    repeating-linear-gradient(
      45deg,
      var(--parchment-light) 0 8px,
      var(--blood-wash) 8px 9px
    );
}

.pipeline-box.compromised .label {
  color: var(--blood);
  font-style: italic;
}

.pipeline-arrow {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--brass);
  align-self: center;
}

/* ═══════════════════════════════════════════════════════════
   COMPARISON / COLUMNS: Two facing manuscript pages
   ═══════════════════════════════════════════════════════════ */

.comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin: 1.5rem 0;
}

.col {
  padding: 1.5rem 1.8rem;
  border-radius: 0;
  position: relative;
  overflow: hidden;
  background: var(--parchment-light);
  border: 1px solid var(--ink-faded);
  box-shadow:
    1px 1px 0 var(--parchment-shade),
    3px 3px 0 var(--parchment-deep);
}

.col::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: none;
}

.col-bad {
  border-top: 4px double var(--blood);
}
.col-bad h4 { color: var(--blood); }

.col-good {
  border-top: 4px double var(--verdigris);
}
.col-good h4 { color: var(--verdigris); }

.col h4 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  font-style: normal;
  margin: 0 0 0.6em 0;
  letter-spacing: 0;
}

.col ul {
  font-size: 1.1rem;
  margin: 0;
  padding-left: 1.2em;
  line-height: 1.5;
  color: var(--ink-soft);
}

.col ul li::marker {
  color: var(--brass);
}

/* ═══════════════════════════════════════════════════════════
   CODE BLOCKS: Hand-set type on a darker paper strip
   ═══════════════════════════════════════════════════════════ */

.code-block {
  background: #2a1f14;
  color: #d8c8a8;
  border: 1px solid var(--ink);
  border-radius: 0;
  padding: 2.2em 1.8em 1.4em;
  margin: 1em 0;
  overflow-x: auto;
  overflow-y: hidden;
  font-family: "JetBrains Mono", monospace;
  font-size: 20px;
  line-height: 1.7;
  position: relative;
  flex-shrink: 0;
  white-space: pre;
  box-shadow:
    inset 0 0 0 1px var(--brass-deep),
    3px 3px 0 var(--parchment-deep),
    5px 5px 0 var(--ink-soft);
}

/* Replace terminal traffic-light dots with a brass tag */
.code-block::before {
  content: "PLATE";
  position: absolute;
  top: 8px;
  left: 16px;
  font-family: var(--font-sc);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--brass-light);
  opacity: 0.7;
}

.code-block .comment { color: #8a7858; font-style: italic; }
.code-block .keyword { color: #d4623a; }
.code-block .string { color: #9eb074; }
.code-block .function { color: #c9a14a; }
.code-block .type { color: #c9a14a; font-style: italic; }
.code-block .operator { color: #a09078; }
.code-block .highlight { color: #e87a5a; font-weight: 600; }
.code-block .injected {
  color: #ffb098;
  background: rgba(160, 35, 35, 0.35);
  padding: 0 0.3em;
  border-radius: 0;
  border-bottom: 1px solid #e87a5a;
}

.code-block .file-label {
  position: absolute;
  top: 6px;
  right: 14px;
  font-family: var(--font-sc);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--brass-light);
  background: transparent;
  padding: 0.2em 0.6em;
  border: 1px solid var(--brass-deep);
  border-radius: 0;
}

.code-block-sm {
  font-size: 16px;
  line-height: 1.4;
  padding: 1.8em 1.3em 1em;
}

.code-block-tight {
  font-size: 16px;
  line-height: 1.4;
  padding: 1.7em 1.2em 0.95em;
  margin: 0.6em 0;
}

.evidence-log {
  background: var(--parchment-light);
  border: 1px solid var(--ink-faded);
  border-left: 4px solid var(--brass);
  box-shadow:
    1px 1px 0 var(--parchment-shade),
    2px 2px 0 var(--parchment-deep);
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  line-height: 1.55;
  margin-top: 0.9rem;
  padding: 0.85rem 1.05rem;
}

.evidence-log .log-label {
  color: var(--blood);
  display: block;
  font-family: var(--font-sc);
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  margin-bottom: 0.35rem;
  text-transform: uppercase;
}

.evidence-log strong {
  color: var(--blood);
  font-family: var(--font-mono);
  font-weight: 700;
}

.evidence-log-compact {
  font-size: 0.88rem;
  line-height: 1.4;
  margin-top: 0.5rem;
  padding: 0.6rem 0.85rem;
}

/* ═══════════════════════════════════════════════════════════
   CARDS: Apothecary labels
   ═══════════════════════════════════════════════════════════ */

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.3rem;
  margin: 1.5rem 0;
}

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

.vuln-card,
.defense-card {
  background: var(--parchment-light);
  border: 1px solid var(--ink-faded);
  border-radius: 0;
  padding: 1.2rem 1.4rem 1.3rem;
  position: relative;
  box-shadow:
    inset 0 0 0 1px var(--parchment),
    inset 0 0 0 2px var(--ink-faded),
    2px 2px 0 var(--parchment-deep),
    4px 4px 0 var(--parchment-shade);
}

.vuln-card::before,
.defense-card::before {
  content: "";
  position: absolute;
  top: 6px;
  left: 8px;
  right: 8px;
  height: 0;
  border-top: 1px solid var(--brass);
  opacity: 0.5;
}

.vuln-card::after {
  content: "☠";
  position: absolute;
  top: 10px;
  right: 14px;
  font-size: 18px;
  color: var(--blood);
  opacity: 0.55;
}

.defense-card::after {
  content: "℞";
  position: absolute;
  top: 8px;
  right: 14px;
  font-size: 22px;
  color: var(--verdigris);
  opacity: 0.7;
  font-family: var(--font-display);
}

.vuln-card h4 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  font-style: normal;
  margin: 0 0 0.5em 0;
  color: var(--blood);
  padding-right: 1.6em;
}

.defense-card h4 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  font-style: normal;
  margin: 0 0 0.5em 0;
  color: var(--verdigris);
  padding-right: 1.6em;
}

.vuln-card p,
.defense-card p {
  font-size: 1.05rem;
  margin: 0;
  line-height: 1.45;
  color: var(--ink-soft);
}

/* ═══════════════════════════════════════════════════════════
   STAT GRID: engraved numerals
   ═══════════════════════════════════════════════════════════ */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.stat-card {
  background: var(--parchment-light);
  border: 1px solid var(--ink-faded);
  border-radius: 0;
  padding: 1.4rem 1rem;
  text-align: center;
  box-shadow: 2px 2px 0 var(--parchment-deep);
  position: relative;
}

.stat-card::before,
.stat-card::after {
  content: "❦";
  position: absolute;
  font-size: 12px;
  color: var(--brass);
  opacity: 0.5;
}
.stat-card::before { top: 4px; left: 6px; }
.stat-card::after  { bottom: 4px; right: 6px; }

.stat-card .stat-value {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 400;
  font-style: italic;
  color: var(--blood);
  line-height: 1;
}

.stat-card .stat-label {
  font-family: var(--font-sc);
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-top: 0.5rem;
}

/* ═══════════════════════════════════════════════════════════
   SECTION SLIDE: Chapter title page
   ═══════════════════════════════════════════════════════════ */

.section-slide {
  background:
    radial-gradient(
      ellipse at center,
      var(--parchment-light) 0%,
      var(--parchment) 60%,
      var(--parchment-dark) 100%
    );
  justify-content: center;
  text-align: center;
  align-items: center;
}

.section-slide .section-number {
  font-family: var(--font-display);
  font-size: 280px;
  font-weight: 400;
  font-style: italic;
  color: var(--blood);
  opacity: 0.12;
  position: absolute;
  top: 100px;
  right: 140px;
  line-height: 1;
  letter-spacing: -0.04em;
}

.section-slide h2 {
  font-size: 88px;
  text-align: center;
  background: none;
  padding-bottom: 40px;
  color: var(--ink);
}

/* Ornate centered rule for section title */
.section-slide h2::after {
  content: "❦";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: auto;
  font-size: 28px;
  color: var(--brass);
  background: none;
}
.section-slide h2 {
  background-image:
    linear-gradient(90deg, transparent 0, var(--brass) 25%, transparent 47%, transparent 53%, var(--brass) 75%, transparent 100%),
    linear-gradient(90deg, transparent 0, var(--brass) 25%, transparent 47%, transparent 53%, var(--brass) 75%, transparent 100%);
  background-size: 60% 1px, 60% 1px;
  background-position: center 100%, center calc(100% - 4px);
  background-repeat: no-repeat;
}

.section-slide .subtitle {
  font-family: var(--font-heading);
  font-style: italic;
  font-weight: 500;
  font-size: 1.7rem;
  color: var(--ink-soft);
  text-transform: none;
  letter-spacing: 0;
  margin-top: 2rem;
  text-align: center;
}

/* ═══════════════════════════════════════════════════════════
   DIFF BLOCK: Recipe alteration
   ═══════════════════════════════════════════════════════════ */

.diff-block {
  background: #2a1f14;
  color: #d8c8a8;
  border: 1px solid var(--ink);
  border-radius: 0;
  padding: 2.2em 1.8em 1.4em;
  margin: 1em 0;
  font-family: "JetBrains Mono", monospace;
  font-size: 20px;
  line-height: 1.65;
  position: relative;
  flex-shrink: 0;
  overflow-x: auto;
  box-shadow:
    inset 0 0 0 1px var(--brass-deep),
    3px 3px 0 var(--parchment-deep),
    5px 5px 0 var(--ink-soft);
}

.diff-block::before {
  content: "EMENDATION";
  position: absolute;
  top: 8px;
  left: 16px;
  font-family: var(--font-sc);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--brass-light);
  opacity: 0.7;
}

.diff-block .file-label {
  position: absolute;
  top: 6px;
  right: 14px;
  font-family: var(--font-sc);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--brass-light);
  background: transparent;
  padding: 0.2em 0.6em;
  border: 1px solid var(--brass-deep);
  border-radius: 0;
}

.diff-add {
  color: #b8d090;
  background: rgba(95, 130, 70, 0.18);
  display: block;
  padding: 0 0.5em;
  margin: 0 -0.5em;
}

.diff-del {
  color: #e89a8a;
  background: rgba(160, 35, 35, 0.22);
  display: block;
  padding: 0 0.5em;
  margin: 0 -0.5em;
  text-decoration: line-through;
  text-decoration-color: rgba(232, 122, 90, 0.4);
}

.diff-context {
  color: #8a7858;
  display: block;
  padding: 0 0.5em;
  margin: 0 -0.5em;
}

/* ═══════════════════════════════════════════════════════════
   TRUST CHAIN: Sealed parchments connected by ribbon
   ═══════════════════════════════════════════════════════════ */

.trust-chain {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  margin: 2rem 0;
}

.trust-node {
  background: var(--parchment-light);
  border: 1px solid var(--ink-soft);
  border-radius: 0;
  padding: 1.4rem 1.7rem;
  text-align: center;
  min-width: 200px;
  position: relative;
  box-shadow:
    inset 0 0 0 1px var(--parchment),
    inset 0 0 0 2px var(--brass),
    2px 2px 0 var(--parchment-deep);
}

.trust-node .node-label {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.45rem;
  color: var(--ink);
  margin-bottom: 0.3rem;
}

.trust-node .node-detail {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--ink-faded);
}

.trust-node.trusted {
  border-color: var(--verdigris);
  box-shadow:
    inset 0 0 0 1px var(--parchment),
    inset 0 0 0 2px var(--verdigris),
    2px 2px 0 var(--parchment-deep);
}
.trust-node.trusted::before {
  content: "✓";
  position: absolute;
  top: -10px;
  right: -10px;
  width: 28px;
  height: 28px;
  background: var(--verdigris);
  color: var(--parchment-light);
  border-radius: 50%;
  font-size: 14px;
  line-height: 28px;
  font-weight: 600;
  box-shadow: 0 0 0 2px var(--parchment);
}

.trust-node.compromised {
  border-color: var(--blood);
  background:
    repeating-linear-gradient(
      45deg,
      var(--parchment-light) 0 8px,
      var(--blood-wash) 8px 9px
    );
}
.trust-node.compromised::before {
  content: "☠";
  position: absolute;
  top: -14px;
  right: -10px;
  width: 32px;
  height: 32px;
  background: var(--blood);
  color: var(--parchment-light);
  border-radius: 50%;
  font-size: 16px;
  line-height: 32px;
  box-shadow: 0 0 0 2px var(--parchment);
}

.trust-arrow {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--brass);
}

.trust-arrow.poisoned {
  color: var(--blood);
}
.trust-arrow.poisoned::after {
  content: " ☠";
  font-size: 0.7em;
}

/* ═══════════════════════════════════════════════════════════
   BLOCKQUOTES: Marginalia
   ═══════════════════════════════════════════════════════════ */

blockquote {
  border-left: 3px double var(--blood);
  margin: 1em 0 1em 0.5em;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-style: italic;
  font-weight: 500;
  color: var(--ink);
  background: none;
  padding: 0.6rem 1.4rem;
  border-radius: 0;
  position: relative;
}

blockquote::before {
  content: "“";
  position: absolute;
  top: -0.2em;
  left: -0.1em;
  font-family: var(--font-display);
  font-size: 4rem;
  color: var(--brass);
  opacity: 0.3;
  line-height: 1;
  pointer-events: none;
}

blockquote.defense {
  border-left-color: var(--verdigris);
}

/* ═══════════════════════════════════════════════════════════
   TABLES: Catalog of effects
   ═══════════════════════════════════════════════════════════ */

.fp-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-family: var(--font-body);
}

.fp-table th {
  text-align: left;
  padding: 0.85rem 1rem;
  font-size: 0.95rem;
  font-family: var(--font-sc);
  color: var(--ink);
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 400;
  background: var(--parchment-dark);
}

.fp-table td {
  padding: 0.95rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 1.1rem;
  color: var(--ink-soft);
}

.fp-table td:first-child {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--ink);
}

.fp-table tr:last-child td {
  border-bottom: 2px solid var(--ink);
}

.fp-table-compact {
  margin: 0.6rem 0;
}

.fp-table-compact th {
  font-size: 0.82rem;
  padding: 0.45rem 0.75rem;
}

.fp-table-compact td {
  font-size: 0.95rem;
  padding: 0.45rem 0.75rem;
}

/* ═══════════════════════════════════════════════════════════
   BADGES: Wax-seal pills
   ═══════════════════════════════════════════════════════════ */

.badge-pass,
.badge-fail,
.badge-warn,
.demo-label {
  display: inline-block;
  font-family: var(--font-sc);
  font-size: 0.9rem;
  font-weight: 400;
  padding: 0.28rem 0.75rem;
  border-radius: 1px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border: 1px solid currentColor;
  box-shadow: 1px 1px 0 var(--parchment-deep);
}

.badge-pass {
  background: var(--verdigris-wash);
  color: var(--verdigris-deep);
}
.badge-pass::before {
  content: "✓ ";
  font-weight: 700;
}

.badge-fail {
  background: var(--blood-wash);
  color: var(--blood-deep);
}
.badge-fail::before {
  content: "☠ ";
}

.badge-warn {
  background: var(--rust-wash);
  color: var(--rust);
}

.demo-label {
  background: var(--rust-wash);
  color: var(--rust);
  margin-bottom: 0.55rem;
}
.demo-label::before {
  content: "▶ ";
}

/* ═══════════════════════════════════════════════════════════
   PROGRESS BAR & SLIDE COUNTER
   ═══════════════════════════════════════════════════════════ */

.progress-bar {
  height: 3px;
  background:
    linear-gradient(90deg, var(--brass) 0%, var(--blood) 100%);
  box-shadow: 0 1px 0 var(--brass-deep);
}

/* Page number: book-style, centered in the foot margin so
   it never collides with the corner filigree. */
.slide-counter {
  font-family: var(--font-heading);
  font-style: italic;
  font-weight: 500;
  font-size: 20px;
  color: var(--ink-faded);
  background: transparent;
  padding: 0;
  border: none;
  border-radius: 0;
  box-shadow: none;
  bottom: 18px;
  right: auto;
  left: 50%;
  transform: translateX(-50%);
  letter-spacing: 0.05em;
}
.slide-counter::before {
  content: "· ";
  color: var(--brass);
}
.slide-counter::after {
  content: " ·";
  color: var(--brass);
}

/* ═══════════════════════════════════════════════════════════
   TITLE SLIDE: Frontispiece
   ═══════════════════════════════════════════════════════════ */

.title-slide {
  background:
    radial-gradient(
      ellipse at 50% 38%,
      var(--parchment-light) 0,
      var(--parchment) 55%,
      var(--parchment-dark) 100%
    );
  justify-content: center;
}

/* A poisoner's bottle stamp behind the title */
.title-slide::before {
  content: "";
  /* override the framework's corner bracket on title slide */
}

.title-slide h1 {
  font-size: 132px;
  line-height: 1;
  text-align: center;
  max-width: 100%;
  margin: 0 auto 0.5rem;
}

.title-slide .subtitle {
  font-family: var(--font-heading);
  font-style: normal;
  font-weight: 500;
  font-size: 1.9rem !important;
  color: var(--ink-soft) !important;
  text-align: center;
  margin: 0.6rem auto 0;
  letter-spacing: 0;
  text-transform: none;
}

.title-slide .section-label {
  justify-content: center;
  color: var(--blood);
}
.title-slide .section-label::before {
  content: "☠";
  color: var(--blood);
}
.title-slide .section-label::after {
  max-width: 280px;
}

.title-meta {
  display: flex;
  gap: 2em;
  margin: 3rem auto 0;
  padding-top: 1.6rem;
  border-top: 1px solid var(--brass);
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-style: normal;
  font-weight: 500;
  font-size: 1.15rem;
  color: var(--ink-soft);
  max-width: 80%;
}

.title-meta span {
  font-family: var(--font-heading);
  font-style: normal;
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--ink-soft);
}

/* ═══════════════════════════════════════════════════════════
   HELP / SPEAKER NOTES
   ═══════════════════════════════════════════════════════════ */

.help-overlay {
  background: rgba(26, 18, 8, 0.92);
}
.help-content {
  background: var(--parchment-light);
  border: 1px solid var(--ink);
  border-radius: 0;
  color: var(--ink);
  box-shadow:
    inset 0 0 0 1px var(--parchment),
    inset 0 0 0 2px var(--brass),
    6px 6px 0 var(--blood-deep);
}
.help-content h3 {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--ink);
}
.help-row {
  font-family: var(--font-body);
  color: var(--ink-soft);
  border-bottom-color: var(--border-subtle);
}
.help-key {
  font-family: var(--font-mono);
  background: var(--parchment-dark);
  color: var(--blood);
  border: 1px solid var(--ink-faded);
  border-radius: 0;
}

.speaker-notes {
  background: rgba(26, 18, 8, 0.96);
  color: var(--parchment-light);
  border-top: 2px solid var(--brass);
}
.speaker-notes strong {
  color: var(--brass-light);
  font-family: var(--font-sc);
}

/* ═══════════════════════════════════════════════════════════
   LINKS
   ═══════════════════════════════════════════════════════════ */

a {
  color: var(--blood);
  text-decoration: none;
  border-bottom: 1px solid var(--brass);
  font-style: italic;
  transition: color 0.2s ease, border-color 0.2s ease;
}

a:hover {
  color: var(--blood-deep);
  border-bottom-color: var(--blood);
}

/* ═══════════════════════════════════════════════════════════
   SCROLLBAR
   ═══════════════════════════════════════════════════════════ */

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--parchment-dark); }
::-webkit-scrollbar-thumb {
  background: var(--ink-faded);
  border-radius: 0;
}
::-webkit-scrollbar-thumb:hover { background: var(--blood); }

/* ═══════════════════════════════════════════════════════════
   PRESENTER MODE: keep it parchment, too
   ═══════════════════════════════════════════════════════════ */

.presenter-info {
  background: var(--parchment-dark);
  border-left-color: var(--brass);
}
.presenter-timer,
.presenter-current,
.presenter-next {
  background: var(--parchment-light);
  border-color: var(--ink-faded);
  border-radius: 0;
}
.presenter-time {
  font-family: var(--font-display);
  color: var(--ink);
}
.presenter-label {
  font-family: var(--font-sc);
  color: var(--blood);
}
.presenter-slide-num {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--ink);
}
.presenter-next-title {
  font-family: var(--font-body);
  color: var(--ink-soft);
}