/* =================================================================
   elevenfactor — Codex Training
   Shared stylesheet. Design tokens reverse-engineered from
   elevenfactor.com (warm paper, brass accent, serif headlines,
   square corners, hairline rules, blueprint grid).
   ================================================================= */

:root {
  /* ---- Color ---- */
  --color-bg:            #f7f2eb;  /* paper */
  --color-bg-deep:       #eee5d8;  /* deeper paper / alt panels */
  --color-bg-dark:       #050505;  /* near-black feature band */
  --color-text:          #090908;  /* ink — primary text & headings */
  --color-text-muted:    #6f6860;  /* secondary / body copy */
  --color-text-placeholder: #b9b2aa;
  --color-text-on-dark:  #ffffff;
  --color-text-on-dark-muted: rgba(255,255,255,0.66);
  --color-border:        #d8cec0;  /* hairline rule */
  --color-border-strong: #c7b9a6;
  --color-accent:        #c8902f;  /* brass / amber — THE accent */
  --color-accent-soft:   rgba(200,144,47,0.12);
  --color-button-bg:     #050505;
  --color-button-bg-hover: #1d1c1b;
  --color-button-text:   #ffffff;

  /* semantic helpers for the training content */
  --color-warn-bg:       rgba(200,144,47,0.10);
  --color-warn-border:   #c8902f;
  --color-ok-bg:         rgba(40,120,70,0.08);
  --color-ok-border:     #3f7a52;

  /* ---- Header / glass surfaces ---- */
  --surface-header:      rgba(247,242,235,0.94);
  --surface-menu:        rgba(247,242,235,0.98);
  --blur-header:         16px;

  /* ---- Typography ---- */
  --font-display: Georgia, "Times New Roman", serif;          /* headings, weight 400 */
  --font-sans:    Inter, ui-sans-serif, system-ui, -apple-system,
                  BlinkMacSystemFont, "Segoe UI", sans-serif;  /* body & UI */
  --font-mono:    ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --font-heading: var(--font-display);
  --font-body:    var(--font-sans);

  --fs-h1:        clamp(2.6rem, 5vw, 4.125rem);
  --fs-h2:        clamp(2rem, 3.5vw, 3.25rem);
  --fs-h3:        1.5rem;
  --fs-body-lg:   1.1875rem;
  --fs-body:      1rem;
  --fs-small:     0.8125rem;
  --fs-eyebrow:   0.75rem;

  --fw-regular:   400;
  --fw-bold:      700;
  --fw-heavy:     800;
  --fw-black:     900;

  --lh-heading:   1.05;
  --lh-body:      1.6;
  --tracking-eyebrow: 0.12em;

  /* ---- Layout & spacing ---- */
  --max-page:     1280px;          /* slightly tighter than site for readability */
  --max-prose:    760px;
  --page-pad:     clamp(22px, 5vw, 88px);
  --section-pad:  clamp(44px, 7vw, 96px);
  --header-height: 76px;
  --gap-grid:     clamp(24px, 5vw, 56px);

  /* ---- Shape & elevation ---- */
  --radius:       0;
  --radius-pill:  999px;
  --shadow:       none;
  --focus-ring:   2px solid var(--color-accent);
  --focus-offset: 4px;
  --transition:   180ms ease;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* blueprint grid background helper */
.grid-bg {
  background-image:
    linear-gradient(90deg, rgba(9,9,8,0.035) 1px, transparent 1px),
    linear-gradient(180deg, rgba(9,9,8,0.025) 1px, transparent 1px);
  background-size: 96px 96px;
}

/* ---- Typography ---- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: var(--fw-regular);
  color: var(--color-text);
  line-height: var(--lh-heading);
  margin: 0 0 0.5em;
}
h1 { font-size: var(--fs-h1); letter-spacing: -0.01em; }
h2 { font-size: var(--fs-h2); margin-top: 1.4em; }
h3 { font-size: var(--fs-h3); margin-top: 1.6em; }
h4 { font-family: var(--font-sans); font-weight: var(--fw-heavy); font-size: 1.05rem; }
p  { color: var(--color-text-muted); font-size: var(--fs-body-lg); margin: 0 0 1.1em; }
em { font-style: italic; color: var(--color-text-muted); }
strong { color: var(--color-text); font-weight: var(--fw-bold); }
ul, ol { color: var(--color-text-muted); font-size: var(--fs-body-lg); padding-left: 1.25em; }
li { margin: 0.4em 0; }
hr { border: none; border-top: 1px solid var(--color-border); margin: 2.5rem 0; }
hr.accent { width: 64px; border-top: 2px solid var(--color-accent); margin: 1.4rem 0; }

.eyebrow {
  font: var(--fw-black) var(--fs-eyebrow)/1.5 var(--font-sans);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 0.9rem;
  display: block;
}

.lead { font-size: 1.3125rem; line-height: 1.55; color: var(--color-text-muted); }

a.inline { border-bottom: 1px solid var(--color-border-strong); transition: color var(--transition); }
a.inline:hover { color: var(--color-accent); border-color: var(--color-accent); }

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-bg-deep);
  border: 1px solid var(--color-border);
  padding: 0.1em 0.4em;
}
pre {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  background: var(--color-bg-dark);
  color: #e7e2d8;
  padding: 1.1rem 1.25rem;
  overflow-x: auto;
  line-height: 1.5;
}
pre code { background: none; border: none; padding: 0; color: inherit; }

/* ---- Layout primitives ---- */
.container { max-width: var(--max-page); margin: 0 auto; padding-inline: var(--page-pad); }
.prose { max-width: var(--max-prose); }
.section { padding-block: var(--section-pad); }
.band-dark { background: var(--color-bg-dark); color: var(--color-text-on-dark); }
.band-dark h1, .band-dark h2, .band-dark h3 { color: var(--color-text-on-dark); }
.band-dark p, .band-dark li { color: var(--color-text-on-dark-muted); }
.band-deep { background: var(--color-bg-deep); }

/* ---- Header ---- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  height: var(--header-height);
  display: flex; align-items: center;
  background: var(--surface-header);
  backdrop-filter: blur(var(--blur-header));
  -webkit-backdrop-filter: blur(var(--blur-header));
  border-bottom: 1px solid var(--color-border);
}
.site-header .container { display: flex; align-items: center; gap: clamp(22px,4vw,66px); width: 100%; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  width: 26px; height: 26px; display: inline-flex; align-items: flex-end; gap: 2px;
}
.brand-mark span { width: 3px; background: var(--color-text); }
.brand-mark span:nth-child(1) { height: 14px; }
.brand-mark span:nth-child(2) { height: 20px; }
.brand-mark span:nth-child(3) { height: 26px; background: var(--color-accent); }
.brand-word { font-family: var(--font-display); font-size: 1.35rem; color: var(--color-text); }
.brand-word b { font-weight: 400; }
.nav { display: flex; align-items: center; gap: clamp(16px,2.4vw,34px); margin-left: auto; }
.nav a { font: var(--fw-heavy) var(--fs-small)/1 var(--font-sans); color: var(--color-text); transition: color var(--transition); }
.nav a:hover, .nav a[aria-current="page"] { color: var(--color-accent); }
.lang-toggle { display: inline-flex; border: 1px solid var(--color-border-strong); }
.lang-toggle button {
  font: var(--fw-heavy) 0.75rem/1 var(--font-sans);
  padding: 7px 11px; background: none; border: none; cursor: pointer;
  color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.06em;
}
.lang-toggle button[aria-pressed="true"] { background: var(--color-text); color: var(--color-bg); }

/* ---- Buttons ---- */
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 12px;
  min-height: 50px; padding: 0 24px;
  border: 1px solid var(--color-button-bg);
  background: var(--color-button-bg); color: var(--color-button-text);
  font: var(--fw-heavy) var(--fs-small)/1 var(--font-sans);
  border-radius: var(--radius); cursor: pointer;
  transition: background var(--transition);
}
.button:hover { background: var(--color-button-bg-hover); }
.button.ghost { background: transparent; color: var(--color-text); }
.button.ghost:hover { background: var(--color-text); color: var(--color-bg); }
.text-link {
  display: inline-flex; align-items: center; gap: 10px; min-height: 44px;
  border-bottom: 1px solid var(--color-text);
  font: var(--fw-bold) 0.875rem/1 var(--font-sans);
  transition: color var(--transition), border-color var(--transition);
}
.text-link:hover { color: var(--color-accent); border-color: var(--color-accent); }

:where(a, button):focus-visible { outline: var(--focus-ring); outline-offset: var(--focus-offset); }

/* ---- Cards & grids ---- */
.grid { display: grid; gap: var(--gap-grid); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card { background: transparent; border-top: 1px solid var(--color-border-strong); padding-top: 1.25rem; }
.card .num { font-family: var(--font-display); font-size: 2.5rem; color: var(--color-border-strong); display: block; margin-bottom: 0.3rem; }
.card h3 { margin-top: 0; }
.card p { font-size: var(--fs-body); }

.module-card {
  border: 1px solid var(--color-border); padding: 1.6rem 1.5rem;
  background: var(--color-bg); transition: border-color var(--transition), background var(--transition);
  display: flex; flex-direction: column; gap: 0.5rem; height: 100%;
}
.module-card:hover { border-color: var(--color-accent); }
.module-card .kicker { font: var(--fw-black) 0.7rem/1 var(--font-sans); letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-text-muted); }
.module-card h3 { margin: 0.2rem 0; font-size: 1.3rem; }
.module-card .meta { margin-top: auto; font-size: var(--fs-small); color: var(--color-text-muted); }

/* ---- Callouts ---- */
.callout { border-left: 3px solid var(--color-accent); background: var(--color-warn-bg); padding: 1rem 1.25rem; margin: 1.6rem 0; }
.callout p:last-child { margin-bottom: 0; }
.callout .callout-label { font: var(--fw-black) 0.7rem/1 var(--font-sans); letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-accent); display: block; margin-bottom: 0.5rem; }
.callout.safe { border-color: var(--color-ok-border); background: var(--color-ok-bg); }
.callout.safe .callout-label { color: var(--color-ok-border); }
.callout.note { border-color: var(--color-border-strong); background: var(--color-bg-deep); }
.callout.note .callout-label { color: var(--color-text-muted); }

/* steps */
.steps { counter-reset: step; list-style: none; padding: 0; }
.steps > li { counter-increment: step; position: relative; padding: 0 0 1.4rem 3rem; border-left: 1px solid var(--color-border); margin-left: 1rem; }
.steps > li::before {
  content: counter(step); position: absolute; left: -1rem; top: -0.2rem;
  width: 2rem; height: 2rem; display: flex; align-items: center; justify-content: center;
  background: var(--color-text); color: var(--color-bg);
  font: var(--fw-heavy) 0.85rem/1 var(--font-sans);
}
.steps > li:last-child { border-left-color: transparent; }

/* tables */
table.tbl { width: 100%; border-collapse: collapse; font-size: var(--fs-body); margin: 1.5rem 0; }
table.tbl th, table.tbl td { text-align: left; padding: 0.7rem 0.9rem; border-bottom: 1px solid var(--color-border); vertical-align: top; }
table.tbl th { font-family: var(--font-sans); font-weight: var(--fw-heavy); font-size: var(--fs-small); text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-muted); }
table.tbl tr:hover td { background: var(--color-bg-deep); }

/* ---- Hero ---- */
.hero { padding-block: clamp(56px, 9vw, 120px); }
.hero .eyebrow { margin-bottom: 1.2rem; }
.hero h1 { max-width: 16ch; }
.hero .lead { max-width: 52ch; margin-top: 1.2rem; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 2rem; }

/* ---- Module page chrome ---- */
.module-head { border-bottom: 1px solid var(--color-border); padding-block: clamp(40px,6vw,72px); }
.breadcrumb { font: var(--fw-heavy) var(--fs-small)/1 var(--font-sans); color: var(--color-text-muted); margin-bottom: 1rem; display: flex; gap: 8px; align-items: center; }
.breadcrumb a:hover { color: var(--color-accent); }
.pager { display: flex; justify-content: space-between; gap: 16px; border-top: 1px solid var(--color-border); padding-top: 2rem; margin-top: 3rem; flex-wrap: wrap; }
.pager a { max-width: 48%; }
.pager .dir { display: block; font: var(--fw-black) 0.7rem/1 var(--font-sans); letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-accent); margin-bottom: 0.4rem; }
.pager .ttl { font-family: var(--font-display); font-size: 1.15rem; color: var(--color-text); }

/* table of contents within a module */
.toc { border: 1px solid var(--color-border); padding: 1.2rem 1.4rem; background: var(--color-bg-deep); margin: 2rem 0; }
.toc .eyebrow { margin-bottom: 0.6rem; }
.toc ol { font-size: var(--fs-body); margin: 0; }

/* duration / level chips */
.chip { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--color-border-strong); padding: 4px 10px; font: var(--fw-heavy) 0.7rem/1 var(--font-sans); text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-muted); }
.chip-row { display: flex; gap: 10px; flex-wrap: wrap; margin: 1rem 0; }

/* ---- Footer ---- */
.site-footer { border-top: 1px solid var(--color-border); padding-block: 48px 28px; margin-top: var(--section-pad); }
.site-footer .cols { display: flex; flex-wrap: wrap; gap: clamp(24px,5vw,72px); justify-content: space-between; }
.site-footer h4 { font-size: 0.95rem; margin-bottom: 0.8rem; }
.site-footer a { display: block; color: var(--color-text-muted); font-size: var(--fs-small); padding: 4px 0; }
.site-footer a:hover { color: var(--color-accent); }
.site-footer .legal { margin-top: 2rem; padding-top: 1.2rem; border-top: 1px solid var(--color-border); font-size: var(--fs-small); color: var(--color-text-muted); }

/* ---- i18n: show/hide by language ---- */
[data-lang]:not(.lang-active) { display: none; }

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .nav { display: none; }
  .nav.open { display: flex; position: absolute; top: var(--header-height); left: 0; right: 0; flex-direction: column; align-items: flex-start; gap: 0; background: var(--surface-menu); border-bottom: 1px solid var(--color-border); padding: 1rem var(--page-pad); }
  .nav.open a { padding: 10px 0; width: 100%; border-bottom: 1px solid var(--color-border); }
}
@media (max-width: 640px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .pager a { max-width: 100%; }
}

/* hamburger */
.menu-btn { display: none; margin-left: auto; background: none; border: 1px solid var(--color-border-strong); width: 40px; height: 40px; cursor: pointer; align-items: center; justify-content: center; }
.menu-btn span, .menu-btn span::before, .menu-btn span::after { content: ""; display: block; width: 18px; height: 2px; background: var(--color-text); position: relative; transition: var(--transition); }
.menu-btn span::before { position: absolute; top: -6px; }
.menu-btn span::after { position: absolute; top: 6px; }
@media (max-width: 900px) { .menu-btn { display: inline-flex; } }

/* =================================================================
   Start page — big choice cards (Training / Hackathon)
   ================================================================= */
.choice-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--gap-grid); margin-top: 3rem; }
.choice-card {
  display: flex; flex-direction: column; gap: 1rem;
  border: 1px solid var(--color-border-strong); background: var(--color-bg);
  padding: clamp(1.6rem, 3vw, 2.6rem);
  transition: border-color var(--transition), transform var(--transition);
  height: 100%;
}
.choice-card:hover { border-color: var(--color-accent); transform: translateY(-2px); }
.choice-card .step-num { font-family: var(--font-display); font-size: 3rem; color: var(--color-border-strong); line-height: 1; }
.choice-card h2 { margin: 0; font-size: clamp(1.8rem, 3vw, 2.4rem); }
.choice-card p { font-size: var(--fs-body); margin: 0; }
.choice-card .meta-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; }
.choice-card .go { margin-top: 1.2rem; align-self: flex-start; }
.choice-card.is-locked { opacity: 0.92; }

/* =================================================================
   Hackathon — idea list + Codex-scored scatter plot
   ================================================================= */
/* add-an-idea bar */
.idea-add { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 1.6rem 0 0.8rem; }
.idea-add input[type="text"] {
  flex: 1 1 320px; min-height: 50px; padding: 0 16px;
  border: 1px solid var(--color-border-strong); background: var(--color-bg);
  font: var(--fw-bold) 1rem/1 var(--font-sans); color: var(--color-text);
}
.idea-add input[type="text"]::placeholder { color: var(--color-text-placeholder); font-weight: 400; }
.idea-add .add-btn { min-height: 50px; }

/* pending idea list (chips above the plot) */
.pending { display: flex; flex-wrap: wrap; gap: 8px; margin: 0.4rem 0 1.1rem; min-height: 8px; }
.pending:empty::before { content: attr(data-empty); color: var(--color-text-placeholder); font-size: var(--fs-small); font-style: italic; }
.pending-chip {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--color-border-strong); background: var(--color-bg);
  padding: 7px 10px; font: var(--fw-bold) 0.9rem/1 var(--font-sans); color: var(--color-text);
}
.pending-chip.scored { border-color: var(--color-accent); }
.pending-chip button { background: none; border: none; cursor: pointer; font-size: 1rem; line-height: 1; color: var(--color-text-placeholder); padding: 0; }
.pending-chip button:hover { color: var(--color-accent); }

.apply-row { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; margin-bottom: 1rem; }
.apply-status { font: var(--fw-heavy) 0.8rem/1.3 var(--font-sans); color: var(--color-text-muted); }
.apply-status.err { color: #b4452f; }
.apply-status.ok { color: var(--color-ok-border); }
.link-btn { font: var(--fw-heavy) 0.78rem/1 var(--font-sans); color: var(--color-text-muted); background: none; border: none; cursor: pointer; text-decoration: underline; padding: 0; }
.link-btn:hover { color: var(--color-accent); }

/* the scatter plot — no lines, no box, just words + stickies */
.plot-wrap { background: transparent; }
.plot {
  position: relative; width: 100%; height: 64vh; min-height: 440px;
  padding: 38px 70px;
}
.plot:fullscreen, .plot-wrap:fullscreen .plot { height: 100vh; background: var(--color-bg); }
.plot-wrap:fullscreen { background: var(--color-bg); padding: 2vh 2vw; }
/* the crosshair — two centre axis lines, no box, no grid */
.plot::before, .plot::after { content: ""; position: absolute; z-index: 0; background: var(--color-accent); opacity: 0.85; }
.plot::before { left: 50%; top: 6%; height: 88%; width: 2px; transform: translateX(-50%); }
.plot::after  { top: 50%; left: 5%; width: 90%; height: 2px; transform: translateY(-50%); }
.plot .ax, .plot .zone { z-index: 2; }
/* axis words (no rules behind them) */
.ax { position: absolute; font: var(--fw-black) 0.72rem/1 var(--font-sans); letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-text-muted); }
.ax-top    { top: 8px;  left: 50%; transform: translateX(-50%); }
.ax-bottom { bottom: 8px; left: 50%; transform: translateX(-50%); }
.ax-left   { left: 10px; top: 50%; transform: translateY(-50%) rotate(180deg); writing-mode: vertical-rl; }
.ax-right  { right: 10px; top: 50%; transform: translateY(-50%); writing-mode: vertical-rl; }
/* faint corner zone labels (words only) */
.zone { position: absolute; font: var(--fw-black) 0.68rem/1.2 var(--font-sans); letter-spacing: 0.06em; text-transform: uppercase; color: var(--color-text-placeholder); pointer-events: none; }
.zone.tl { top: 34px; left: 74px; color: var(--color-accent); }
.zone.tr { top: 34px; right: 74px; text-align: right; }
.zone.bl { bottom: 34px; left: 74px; }
.zone.br { bottom: 34px; right: 74px; text-align: right; }

/* ideas as bold labels positioned on the plot (no notes, no box) */
.dot {
  position: absolute; z-index: 3; transform: translate(-50%, -50%);
  max-width: 175px; text-align: center;
  padding: 5px 11px;
  background: var(--color-bg);
  border: 1px solid var(--color-border-strong);
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  font: var(--fw-heavy) 1.02rem/1.15 var(--font-sans); color: var(--color-accent);
  transition: background .14s, border-color .14s, box-shadow .14s, color .14s;
}
.dot.sweet { border-color: var(--color-accent); background: var(--color-accent-soft); }
.dot:hover {
  z-index: 20;
  background: var(--color-bg-dark);
  border-color: var(--color-accent);
  color: var(--color-text-on-dark);
  box-shadow: 0 6px 22px rgba(0,0,0,0.22);
}
.dot .x {
  position: absolute; top: -9px; right: -9px; line-height: 1; padding: 2px;
  background: none; border: none; cursor: pointer; font-size: 0.9rem; color: var(--color-text-placeholder); opacity: 0;
}
.dot:hover .x { opacity: 1; color: var(--color-text-on-dark-muted); }
.dot .x:hover { color: var(--color-text-on-dark); }

/* settings page form */
.settings-form { max-width: 560px; margin-top: 2rem; display: flex; flex-direction: column; gap: 1.4rem; }
.field label { display: block; font: var(--fw-heavy) 0.85rem/1.3 var(--font-sans); margin-bottom: 0.5rem; }
.field input, .field select {
  width: 100%; min-height: 50px; padding: 0 14px;
  border: 1px solid var(--color-border-strong); background: var(--color-bg);
  font: var(--fw-bold) 1rem/1 var(--font-sans); color: var(--color-text);
}
.field .hint { font-size: var(--fs-small); color: var(--color-text-muted); margin-top: 0.5rem; }

@media (max-width: 720px) {
  .choice-grid { grid-template-columns: 1fr; }
  .plot { padding: 34px 46px; }
  .dot { max-width: 160px; font-size: 0.82rem; }
}

@media print {
  .site-header, .site-footer, .pager, .menu-btn, .lang-toggle { display: none; }
  body { background: #fff; }
}

/* ============ presentation mode (modules) ============ */
/* Toggle button in the header nav */
.present-btn {
  font: var(--fw-heavy) 0.75rem/1 var(--font-sans);
  padding: 7px 11px; background: none; cursor: pointer;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border-strong);
  text-transform: uppercase; letter-spacing: 0.06em;
}
.present-btn:hover { color: var(--color-text); border-color: var(--color-text); }
.present-btn[aria-pressed="true"] { background: var(--color-text); color: var(--color-bg); border-color: var(--color-text); }

/* One slide per screen: the module title, then each H2 section of the prose */
html.present-root {
  scroll-snap-type: y mandatory;
  scroll-padding-top: var(--header-height);
  scroll-behavior: smooth;
}
body.present .toc,
body.present .pager,
body.present .breadcrumb,
body.present .site-footer { display: none; }
body.present .section { padding-block: 0; }
body.present .module-head,
body.present .present-slide {
  min-height: calc(100vh - var(--header-height));
  display: flex; flex-direction: column; justify-content: center;
  scroll-snap-align: start; scroll-snap-stop: always;
  box-sizing: border-box;
  padding-block: clamp(1.5rem, 5vh, 4rem);
}
body.present .module-head { border-bottom: none; }
body.present .present-slide > h2:first-child,
body.present .present-slide > *:first-child { margin-top: 0; }
@media (max-width: 640px) {
  html.present-root { scroll-snap-type: y proximity; }
}