/* learn-claude-with-phoebe - editorial bold design system
   Accent: indigo #3776AB · Ink: #14202B · Flagship: amber #E6A700 */

:root {
  --indigo: #3776AB;
  --indigo-deep: #1E4A73;
  --indigo-mid: #4B8BBE;
  --indigo-soft: #8FB8D6;
  --indigo-50: #EAF1F7;
  --ink: #14202B;
  --muted: #5A6B78;
  --faint: #B8C4CE;
  --hairline: #E1E8ED;
  --amber: #E6A700;
  --amber-ink: #3A2E00;
  --amber-50: #FFF8E1;
  --paper: #FFFFFF;
  --code-bg: #0E1B2A;
  --code-ink: #D6E4F0;
  --radius: 14px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { font-size: 16px; scroll-behavior: smooth; }
html.zoom-125 { font-size: 20px; }
html.zoom-150 { font-size: 24px; }

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.85;
  font-feature-settings: "tnum";
}

.wrap { max-width: 62rem; margin: 0 auto; padding: 0 1.5rem; }

/* ---------- header band ---------- */
.masthead {
  background: var(--indigo);
  color: #fff;
  padding: 2.5rem 0 2.25rem;
}
.masthead .eyebrow {
  font-size: .75rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  opacity: .85;
  font-weight: 600;
}
.masthead h1 {
  font-size: 2.1rem;
  line-height: 1.15;
  font-weight: 800;
  margin: .5rem 0 .75rem;
  letter-spacing: -.02em;
}
.masthead h1 .accent { color: inherit; }
.masthead .sub { font-size: 1.05rem; opacity: .92; max-width: 44rem; }

.chip-row { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.1rem; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  border-radius: 999px;
  padding: .25rem .8rem;
  font-size: .78rem;
  font-weight: 600;
  white-space: nowrap;
}
.chip.level { background: #fff; color: var(--indigo); }
.chip.audience { background: rgba(255,255,255,.16); color: #fff; border: 1px solid rgba(255,255,255,.35); }
.chip.time { background: var(--ink); color: #fff; font-variant-numeric: tabular-nums; }

/* ---------- agenda bar ---------- */
.agenda {
  display: flex;
  border-radius: 999px;
  overflow: hidden;
  margin: 1.4rem 0 0;
  font-size: .72rem;
  font-weight: 600;
  text-align: center;
  color: #fff;
}
.agenda span { padding: .45rem .3rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.agenda .a1 { background: var(--indigo-deep); }
.agenda .a2 { background: var(--indigo-mid); }
.agenda .a3 { background: var(--amber); color: var(--amber-ink); }
.agenda .a4 { background: var(--indigo-soft); }

/* ---------- toolbar ---------- */
.toolbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--hairline);
  padding: .55rem 0;
}
.toolbar .wrap { display: flex; align-items: center; gap: .6rem; }
.toolbar .crumb { font-size: .8rem; color: var(--muted); font-weight: 600; margin-right: auto; }
.toolbar .crumb a { color: var(--indigo); text-decoration: none; }
.btn {
  border: 1px solid var(--hairline);
  background: #fff;
  color: var(--ink);
  border-radius: 999px;
  padding: .35rem .9rem;
  font-size: .78rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: all .15s ease;
}
.btn:hover { border-color: var(--indigo); color: var(--indigo); }
.btn.primary { background: var(--indigo); border-color: var(--indigo); color: #fff; }
.btn.primary:hover { background: var(--indigo-deep); }

/* ---------- sections ---------- */
main { padding: 2.5rem 0 4rem; }

.section { margin-bottom: 2.8rem; }
.section-kicker { margin-bottom: 1rem; }
.section-kicker .klabel {
  display: block;
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--indigo);
  font-weight: 700;
  margin-bottom: .35rem;
}
.section-kicker h2 {
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -.01em;
  display: flex;
  align-items: center;
  gap: .7rem;
  flex-wrap: wrap;
}
.section-kicker .tag {
  border-radius: 999px;
  padding: .18rem .7rem;
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
}
.tag.concept { background: var(--indigo-50); color: var(--indigo); }
.tag.demo { background: var(--amber-50); color: var(--amber-ink); }
.tag.exercise { background: var(--ink); color: #fff; }

.lede { color: var(--muted); max-width: 46rem; margin-bottom: 1.4rem; line-height: 1.8; }

/* live vs self-study markers on cards */
.mode {
  font-size: .64rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  padding: .14rem .6rem;
  border-radius: 999px;
  flex: none;
}
.mode.live { background: var(--indigo); color: #fff; }
.mode.self { background: #fff; color: var(--muted); border: 1px solid var(--hairline); }

/* ---------- accordions ---------- */
details.card {
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  margin-bottom: .8rem;
  overflow: hidden;
  background: #fff;
}
details.card[open] { border-color: var(--indigo-soft); box-shadow: 0 8px 28px rgba(55,118,171,.08); }
details.card summary {
  list-style: none;
  cursor: pointer;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: .75rem;
  font-weight: 700;
  font-size: 1.02rem;
  user-select: none;
}
details.card summary::-webkit-details-marker { display: none; }
details.card summary .dot {
  width: .6rem; height: .6rem;
  border-radius: 999px;
  background: var(--indigo);
  flex: none;
}
details.card summary .mini { margin-left: auto; font-size: .72rem; color: var(--muted); font-weight: 600; white-space: nowrap; }
details.card summary .caret { transition: transform .2s ease; color: var(--indigo); font-size: .8rem; }
details.card[open] summary .caret { transform: rotate(90deg); }
details.card .body { padding: 0 1.25rem 1.4rem; border-top: 1px solid var(--hairline); padding-top: 1.15rem; }
details.card .body p { margin-bottom: 1.05rem; max-width: 48rem; }
details.card .body p:last-child { margin-bottom: 0; }
details.card .body ul, details.card .body ol { margin: 0 0 1.1rem 1.2rem; max-width: 47rem; }
details.card .body li { margin-bottom: .65rem; }
details.card .body h4 { font-size: .95rem; font-weight: 700; margin: 1.1rem 0 .45rem; }
details.card .body h4:first-child { margin-top: 0; }

/* ---------- pills & legends ---------- */
.legend { display: flex; flex-wrap: wrap; gap: .5rem; margin: 0 0 1.2rem; }
.pill {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  border-radius: 999px;
  padding: .28rem .85rem;
  font-size: .78rem;
  font-weight: 600;
}
.pill.solid { background: var(--indigo); color: #fff; }
.pill.light { background: var(--indigo-50); color: var(--indigo); }
.pill.inkpill { background: var(--ink); color: #fff; }
.pill.amber, .pill.peach { background: var(--amber); color: var(--amber-ink); }
.pill.bare { color: var(--faint); }

/* ---------- 4D grid ---------- */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: .8rem; margin: .5rem 0 1rem; }
.d-card {
  border: 1px solid var(--hairline);
  border-left: 4px solid var(--indigo);
  border-radius: 10px;
  padding: 1rem 1.1rem;
}
.d-card h4 { font-size: .95rem; margin-bottom: .3rem; }
.d-card h4 .lead-letter { color: var(--indigo); }
.d-card p { font-size: .86rem; color: var(--muted); margin: 0; }

/* ---------- tables ---------- */
table.clean { width: 100%; border-collapse: collapse; font-size: .9rem; margin: .4rem 0 1rem; }
table.clean th {
  text-align: left;
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--muted);
  padding: .5rem .6rem;
  border-bottom: 2px solid var(--ink);
}
table.clean td { padding: .7rem .6rem; border-bottom: .5px solid var(--hairline); vertical-align: top; line-height: 1.7; }
table.clean td:first-child { font-weight: 600; }

/* ---------- prompt boxes ---------- */
.prompt-box {
  position: relative;
  background: var(--code-bg);
  color: var(--code-ink);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  margin: 1rem 0 1.2rem;
  font-family: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
  font-size: .84rem;
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: break-word;
}
.prompt-box .label {
  position: absolute;
  top: -0.7rem;
  left: 1rem;
  background: var(--indigo);
  color: #fff;
  font-family: "Inter", -apple-system, sans-serif;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  border-radius: 999px;
  padding: .15rem .7rem;
}
.prompt-box.bad .label { background: var(--faint); color: var(--ink); }
.prompt-box.good .label { background: var(--amber); color: var(--amber-ink); }
.copy-btn {
  position: absolute;
  top: .7rem;
  right: .7rem;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.25);
  color: #fff;
  border-radius: 999px;
  padding: .25rem .8rem;
  font-size: .72rem;
  font-weight: 600;
  cursor: pointer;
  font-family: "Inter", -apple-system, sans-serif;
  transition: background .15s ease;
}
.copy-btn:hover { background: rgba(255,255,255,.22); }
.copy-btn.copied { background: var(--amber); border-color: var(--amber); color: var(--amber-ink); }

/* ---------- demo steps ---------- */
.steps { counter-reset: step; margin: .6rem 0 1rem; }
.step {
  display: flex;
  gap: .9rem;
  padding: .85rem 0;
  border-bottom: .5px solid var(--hairline);
}
.step:last-child { border-bottom: none; }
.step::before {
  counter-increment: step;
  content: counter(step);
  flex: none;
  width: 1.7rem; height: 1.7rem;
  border-radius: 999px;
  background: var(--indigo-50);
  color: var(--indigo);
  font-weight: 700;
  font-size: .85rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: .1rem;
}
.step p { margin: 0; }

/* ---------- callouts ---------- */
.callout {
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  margin: 1rem 0;
  font-size: .92rem;
}
.callout.tip { background: var(--indigo-50); border-left: 4px solid var(--indigo); }
.callout.win { background: var(--amber-50); border-left: 4px solid var(--amber); }
.callout strong:first-child { display: block; margin-bottom: .2rem; }

.callout.example {
  background: #FFFFFF;
  border: 1px solid var(--hairline);
  border-left: 4px solid var(--amber);
  font-size: .9rem;
}
.callout.example .ex-pill {
  display: inline-block;
  background: var(--amber);
  color: var(--amber-ink);
  border-radius: 999px;
  padding: .15rem .7rem;
  font-size: .68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: .5rem;
}
.callout.example p { margin: 0 0 .75rem; max-width: 47rem; }
.callout.example p:last-child { margin-bottom: 0; }
.callout.example ul { margin: 0 0 0 1.1rem; max-width: 46rem; }
.callout.example li { margin-bottom: .6rem; }
.callout.example li:last-child { margin-bottom: 0; }

/* ---------- zoomable figures ---------- */
figure.zoomable {
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 1.2rem;
  margin: 1rem 0 1.4rem;
  cursor: zoom-in;
  transition: box-shadow .15s ease;
  background: #fff;
}
figure.zoomable:hover { box-shadow: 0 8px 28px rgba(55,118,171,.12); }
figure.zoomable svg, figure.zoomable img { width: 100%; height: auto; display: block; }
figure.zoomable figcaption {
  margin-top: .6rem;
  font-size: .76rem;
  color: var(--muted);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: .4rem;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(20,32,43,.9);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 3vh 3vw;
  cursor: zoom-out;
}
.lightbox.open { display: flex; }
.lightbox .inner {
  background: #fff;
  border-radius: var(--radius);
  padding: 2rem;
  max-width: 94vw;
  max-height: 92vh;
  overflow: auto;
}
.lightbox .inner svg, .lightbox .inner img { width: min(88vw, 70rem); height: auto; }
.lightbox .close-hint {
  position: fixed;
  top: 1rem; right: 1.4rem;
  color: #fff;
  font-size: .8rem;
  font-weight: 600;
  opacity: .8;
}

/* ---------- courses covered ---------- */
.covered { border: 1px solid var(--hairline); border-radius: var(--radius); overflow: hidden; }
.covered-row {
  display: flex;
  align-items: baseline;
  gap: .8rem;
  padding: .75rem 1.1rem;
  border-bottom: .5px solid var(--hairline);
  font-size: .9rem;
}
.covered-row:last-child { border-bottom: none; }
.covered-row .status { flex: none; }
.covered-row .name { font-weight: 600; }
.covered-row .note { margin-left: auto; color: var(--muted); font-size: .78rem; text-align: right; }

/* ---------- cheat sheet footer ---------- */
.cheat {
  background: var(--ink);
  color: #fff;
  border-radius: var(--radius);
  padding: 1.6rem 1.6rem 1.3rem;
  margin-top: 3rem;
}
.cheat h3 { font-size: 1.1rem; margin-bottom: 1rem; }
.cheat h3 span { color: var(--indigo-soft); }
.cheat .grid-2 { gap: 1rem; }
.cheat .cheat-item { border-left: 3px solid var(--indigo-mid); padding-left: .8rem; }
.cheat .cheat-item b { display: block; font-size: .85rem; color: var(--indigo-soft); }
.cheat .cheat-item span { font-size: .82rem; opacity: .85; }

footer.pagefoot {
  border-top: 1px solid var(--hairline);
  margin-top: 3rem;
  padding: 1.4rem 0 2.5rem;
  font-size: .8rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .8rem;
}
footer.pagefoot a { color: var(--indigo); text-decoration: none; font-weight: 600; }

/* ---------- wayfinding: reading progress + section dots + part numbers ---------- */

#progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--indigo), var(--amber));
  z-index: 90;
}

.pagenav {
  position: fixed;
  right: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 50;
  display: flex;
  flex-direction: column;
  gap: .55rem;
}
.pagenav a {
  width: .68rem; height: .68rem;
  border-radius: 999px;
  background: #fff;
  border: 2px solid var(--faint);
  display: block;
  position: relative;
  transition: all .15s ease;
}
.pagenav a:hover { border-color: var(--indigo); transform: scale(1.3); }
.pagenav a.active { background: var(--indigo); border-color: var(--indigo); }
.pagenav a .nlabel {
  position: absolute;
  right: 1.4rem;
  top: 50%;
  transform: translateY(-50%);
  background: var(--ink);
  color: #fff;
  font-size: .7rem;
  font-weight: 600;
  padding: .22rem .65rem;
  border-radius: 6px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity .15s ease;
}
.pagenav a:hover .nlabel { opacity: 1; }
@media (max-width: 74rem) { .pagenav { display: none; } }

main { counter-reset: partnum -1; }
.section .section-kicker { position: relative; }
.section .section-kicker::before {
  counter-increment: partnum;
  content: counter(partnum, decimal-leading-zero);
  position: absolute;
  right: 0;
  top: -1.2rem;
  font-size: 4.4rem;
  font-weight: 800;
  color: var(--indigo-50);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  pointer-events: none;
  z-index: 0;
}
.section .section-kicker > * { position: relative; z-index: 1; }

details.card summary { transition: background .15s ease; }
details.card summary:hover { background: #F5F9FC; }

/* ---------- journey strip: you are here in the series ---------- */
.journey {
  display: flex;
  align-items: center;
  gap: .45rem;
  margin-top: 1.1rem;
  flex-wrap: wrap;
}
.journey .jlabel { font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .09em; opacity: .8; margin-right: .3rem; }
.journey a {
  width: 1.7rem; height: 1.7rem;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: .8rem;
  font-weight: 700;
  text-decoration: none;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,.45);
  transition: all .15s ease;
  font-variant-numeric: tabular-nums;
}
.journey a:hover { border-color: #fff; transform: scale(1.12); }
.journey a.here { background: #fff; color: var(--indigo); border-color: #fff; }
.journey a.dd-chip { width: auto; border-radius: 999px; padding: 0 .7rem; font-size: .72rem; }

/* ---------- check-yourself quiz ---------- */
.quiz-q {
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem 1rem;
  margin-bottom: .9rem;
  background: #fff;
}
.quiz-q .qtext { font-weight: 700; margin-bottom: .7rem; }
.quiz-q .qopt {
  display: block;
  width: 100%;
  text-align: left;
  background: #fff;
  border: 1px solid var(--hairline);
  border-radius: 10px;
  padding: .6rem .9rem;
  margin-bottom: .5rem;
  font-size: .9rem;
  font-family: inherit;
  color: var(--ink);
  cursor: pointer;
  transition: all .15s ease;
}
.quiz-q .qopt:hover { border-color: var(--indigo); background: var(--indigo-50); }
.quiz-q .qopt.correct { background: var(--indigo); border-color: var(--indigo); color: #fff; font-weight: 600; }
.quiz-q .qopt.correct::after { content: "  ✓"; }
.quiz-q .qopt.wrong { background: #FEF2F2; border-color: #FCA5A5; color: #991B1B; animation: qshake .3s ease; }
.quiz-q .qopt.wrong::after { content: "  ✗ try again"; font-size: .78rem; }
.quiz-q .qopt:disabled { cursor: default; }
.quiz-q .qwhy {
  display: none;
  background: var(--amber-50);
  border-left: 4px solid var(--amber);
  border-radius: 8px;
  padding: .6rem .9rem;
  font-size: .86rem;
  margin-top: .3rem;
}
.quiz-q.answered .qwhy { display: block; }
@keyframes qshake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}
.quiz-score { font-weight: 700; color: var(--indigo); margin-top: .4rem; }

@media (prefers-reduced-motion: reduce) {
  .quiz-q .qopt.wrong { animation: none; }
  .journey a:hover { transform: none; }
}

/* ---------- micro-interactions (react-bits inspired, vanilla) ---------- */

/* BlurText: staggered word reveal on the masthead headline */
.masthead h1 .bw {
  display: inline-block;
  opacity: 0;
  filter: blur(8px);
  transform: translateY(.35em);
  animation: bw-in .7s cubic-bezier(.22,.9,.35,1) forwards;
  animation-delay: var(--bw-delay, 0s);
}
@keyframes bw-in {
  to { opacity: 1; filter: blur(0); transform: translateY(0); }
}

/* SpotlightCard: cursor-following highlight on accordion cards */
details.card { position: relative; }
details.card::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity .3s ease;
  background: radial-gradient(320px circle at var(--mx, 50%) var(--my, 50%), rgba(55,118,171,.09), transparent 65%);
}
details.card:hover::after { opacity: 1; }

/* ScrollReveal: sections rise in as they enter the viewport */
.js-reveal .section {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .6s ease, transform .6s cubic-bezier(.22,.9,.35,1);
}
.js-reveal .section.revealed { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .masthead h1 .bw { animation: none; opacity: 1; filter: none; transform: none; }
  details.card::after { display: none; }
  .js-reveal .section { opacity: 1; transform: none; transition: none; }
}

@media (max-width: 40rem) {
  .masthead h1 { font-size: 1.6rem; }
  .agenda span { font-size: .6rem; }
  .toolbar .crumb { display: none; }
}

@media print {
  .toolbar, .copy-btn { display: none; }
  details.card { border: 1px solid #ccc; }
}

/* === LWP-PATCH v2 === */
/* palette-agnostic aliases: 75 repos use --indigo/--amber, 1 uses --pine/--clay */
:root {
  --pv-accent: var(--indigo, var(--pine, #334155));
  --pv-flag: var(--amber, var(--clay, #B45309));
  --pv-flag-50: var(--amber-50, var(--clay-50, #FEF3E2));
}

/* ============================================================
   v2 - readable on a phone + reading modes
   Layout only. No palette tokens are changed.
   ============================================================ */

/* --- skip link --- */
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--pv-accent); color: #fff;
  padding: .7rem 1.1rem; border-radius: 0 0 var(--radius) 0;
  font-weight: 700; font-size: .85rem; text-decoration: none;
}
.skip-link:focus { left: 0; }

/* --- visible keyboard focus everywhere --- */
:focus-visible {
  outline: 3px solid var(--pv-flag);
  outline-offset: 2px;
  border-radius: 4px;
}

/* --- diagrams: hold authored width, scroll instead of shrinking --- */
.figscroll { overflow-x: auto; -webkit-overflow-scrolling: touch; overscroll-behavior-x: contain; }
.figscroll::-webkit-scrollbar { height: 6px; }
.figscroll::-webkit-scrollbar-thumb { background: var(--faint); border-radius: 3px; }

/* --- tables: scroll container + sticky row label --- */
.tablescroll { overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: var(--radius); }

/* --- section contents counter --- */
.sec-meta {
  display: block; margin-top: .3rem;
  font-size: .72rem; font-weight: 700; letter-spacing: .06em;
  text-transform: uppercase; color: var(--muted);
  font-variant-numeric: tabular-nums;
}

/* --- study-mode switch --- */
.btn.mode-on { background: var(--pv-flag); border-color: var(--pv-flag); color: #fff; }

/* --- deep-linked card gets a moment of emphasis --- */
details.card.linked { border-color: var(--pv-flag); box-shadow: 0 0 0 3px var(--pv-flag-50); }

@media (max-width: 820px) {
  /* labels keep the size they were drawn at; the figure scrolls */
  figure.zoomable svg { min-width: 820px; }
  .figscroll .mm-svg, .mindmap svg { min-width: 840px; }

  table.clean { min-width: 620px; }
  table.clean th:first-child,
  table.clean td:first-child {
    position: sticky; left: 0; background: #fff;
    box-shadow: 1px 0 0 var(--hairline);
  }

  pre, .prompt-box { overflow-x: auto; }

  /* 44px tap targets */
  details.card summary { min-height: 44px; }
  .qopt { min-height: 44px; display: flex; align-items: center; padding: .7rem .9rem; }
  .toolbar .btn, .pagefoot a { min-height: 44px; display: inline-flex; align-items: center; }
}

@media (max-width: 640px) {
  /* long inline code tokens and nowrap chips are the two things that still
     forced the page sideways below 640px: let them break rather than push
     the layout. Inside the media query only - desktop is untouched. */
  :not(pre) > code, .prompt-box span, code span,
  p span, li span, td span { overflow-wrap: anywhere; word-break: break-word; }
  .chip, .syn-chip, .pill, .mode, .tag { white-space: normal; max-width: 100%; }

  /* the agenda bar truncated its own labels into nonsense - stack it */
  .agenda { flex-direction: column; align-items: stretch; gap: .3rem; }
  .agenda span { font-size: .74rem; text-align: left; padding: .4rem .7rem; flex: none !important; }
  .chip-row, .legend { flex-wrap: wrap; }
  .journey { flex-wrap: wrap; row-gap: .45rem; }
}

/* --- print: a session should print as a complete handout --- */
@media print {
  .pagenav, #progress-bar, .skip-link, .journey, .lightbox { display: none !important; }
  details.card > .body { display: block !important; }
  details.card, figure, table.clean, .callout { break-inside: avoid; page-break-inside: avoid; }
  figure.zoomable svg { min-width: 0; max-width: 100%; }
  .figscroll, .tablescroll { overflow: visible; }
  a[href^="http"]::after { content: " (" attr(href) ")"; font-size: .72rem; color: #555; }
}

/* swipe hint: own line, only when the diagram really does scroll */
figure.zoomable.can-scroll figcaption { flex-wrap: wrap; }
figure.zoomable.can-scroll figcaption::after {
  content: "swipe the diagram \2192";
  flex: 0 0 100%;
  margin-top: .2rem;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--pv-flag);
}
/* === /LWP-PATCH === */