/* Video library and explainer detail pages. Shared cards and players live in site.css. */
.catalog-intro { display: grid; grid-template-columns: 2fr 1fr; align-items: end; gap: 40px; padding: 58px 0 42px; }
.catalog-intro h1 { font-size: clamp(58px, 5.6vw, 82px); line-height: 1.02; margin-bottom: 0; }
.catalog-intro > p { max-width: 290px; color: #59564f; padding-bottom: 7px; font-size: 16px; line-height: 1.6; }
.catalog-section { padding: 28px 0 60px; border-bottom: 1px solid var(--ink); }
.catalog-section .library-tools { border-top: 0; padding: 0; flex: 1; }
.catalog-console { display: flex; align-items: center; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); padding: 14px 0 24px; }
.catalog-view { display: flex; align-items: center; justify-content: flex-end; gap: 5px; margin: 0; flex-shrink: 0; }
.catalog-view[hidden] { display: none; }
.catalog-view > .mono { color: var(--muted); margin-right: 8px; }
.catalog-view button { padding: 8px 15px; min-height: 44px; background: transparent; border: 1px solid var(--line); font-size: 11px; cursor: pointer; transition: background .2s, color .2s, border-color .2s; }
.catalog-view button:hover { border-color: var(--ink); }
.catalog-view button[aria-pressed=true] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.library-search { display: grid; grid-template-columns: 180px minmax(0, 1fr); align-items: center; gap: 20px; margin-bottom: 16px; }
.library-search[hidden], .library-empty[hidden] { display: none; }
.library-search label { color: var(--blue); }
.library-search input { width: 100%; min-width: 0; border: 1px solid var(--ink); background: transparent; padding: 11px 14px; color: var(--ink); font: 14px/1.5 var(--sans); border-radius: 0; }
.library-search input::placeholder { color: #625d55; opacity: 1; }
.library-search input:focus-visible { outline: 3px solid var(--blue); outline-offset: 4px; }
.library-empty { padding: 50px 20px; text-align: center; border-block: 1px solid var(--line); font: 28px/1.3 var(--serif); overflow-wrap: anywhere; }
.video-library .result-count { overflow-wrap: anywhere; max-width: 100%; }

/* List view styling */
.video-library .library-grid.is-list { grid-template-columns: 1fr; gap: 0; }
.is-list .video-card { display: grid; grid-template-columns: 180px minmax(240px, 1.4fr) minmax(200px, 1fr) 120px; gap: 6px 24px; border-top: 1px solid var(--line); padding: 18px 12px; align-items: center; border-radius: 0; transition: background .2s ease; }
.is-list .video-card:hover { background: #ebe5d8; }
.is-list .video-image { grid-column: 1; grid-row: 1 / 4; }
.is-list .card-meta { grid-column: 2; grid-row: 1; margin: 0; }
.is-list .card-meta > span:last-child { display: none; }
.is-list h3 { grid-column: 2; grid-row: 2 / 4; font-size: 25px; }
.is-list p { grid-column: 3; grid-row: 1 / 4; margin: 0; max-width: 50ch; font-size: 16px; line-height: 1.6; }
.is-list .card-foot { grid-column: 4; grid-row: 1 / 4; border: 0; padding: 0; margin: 0; }
.is-list .video-card[hidden] { display: none; }
.video-library .video-card.pending { opacity: 1 !important; transform: none !important; }

/* Detail Page Header */
.video-breadcrumb { display: flex; justify-content: flex-start; flex-wrap: wrap; gap: 12px; padding: 26px 0; color: var(--muted); font-size: 10px; }
.video-breadcrumb a { display: inline !important; }
.video-breadcrumb a:hover { color: var(--orange); }
.explainer-heading { padding: 14px 0 12px; }
.explainer-heading h1 { max-width: 1050px; font-size: clamp(48px, 5.2vw, 76px); line-height: 1.04; letter-spacing: -2px; margin: 24px 0 26px; }
.explainer .edition-bar a { color: var(--blue); text-decoration: underline; text-underline-offset: 4px; }
.explainer .lite-label { display: none; }

/* Watch plate & Spec sheet */
.watch-grid { display: grid; grid-template-columns: minmax(0, 2.25fr) minmax(240px, 1fr); gap: 40px; padding: 32px 0 48px; border-bottom: 1px solid var(--ink); align-items: start; }
.watch-plate { border: 1px solid var(--ink); min-width: 0; }
#watch { scroll-margin-top: 24px; }
.plate-label { display: flex; justify-content: space-between; padding: 12px 16px; font-size: 10px; }
.watch-plate figcaption { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 14px 20px; padding: 14px 16px; font-family: var(--serif); font-size: 20px; line-height: 1.2; }
.watch-plate figcaption a { font: 10px/1.6 Inter, sans-serif; flex-shrink: 0; text-decoration: underline; text-underline-offset: 3px; }
.watch-plate .read-jump { color: var(--blue); margin-left: auto; min-height: 30px; display: flex; align-items: center; }

.video-spec h2, .chapter-sheet h2 { font-size: 32px; letter-spacing: -.6px; }
.video-spec .section-no, .chapter-sheet .section-no { font-size: 10px; margin-bottom: 10px; }
.video-spec dl { margin: 23px 0; }
.video-spec dl > div { display: grid; grid-template-columns: 85px 1fr; gap: 10px; border-top: 1px solid var(--line); padding: 9px 0; font-size: 12px; }
.video-spec dt { font: 10px/1.8 'Courier New', monospace; text-transform: uppercase; color: var(--muted); }
.video-spec dd { margin: 0; }
.spec-fact { border-top: 1px solid var(--ink); padding-top: 16px; }
.spec-fact > .mono { font-size: 10px; color: var(--blue); }
.spec-fact p { font: 24px/1.25 var(--serif); margin-top: 10px; }

/* Reading Section Layout */
.reading-grid { display: grid; grid-template-columns: minmax(0, 2.25fr) minmax(240px, 1fr); gap: 40px; padding-top: 40px; }
.reading-main { min-width: 0; }
.reading-sidebar { min-width: 0; }
.reading-main h2 { font-size: 38px; line-height: 1.1; letter-spacing: -1px; }
.reading-section { padding: 38px 0; border-bottom: 1px solid var(--line); }
.reading-section > p { margin-top: 20px; line-height: 1.8; font-size: 16px; }

/* Guess note (01 / Before you watch) */
.guess-note { background: #ece7db; border: 1px solid var(--line); border-left: 3px solid var(--blue); padding: 30px; }
.noticed { font: 25px/1.35 var(--serif); margin-top: 24px; }
.usual-answer { border-left: 2px solid var(--blue); padding-left: 18px; margin: 24px 0; }
.usual-answer .mono { font-size: 10px; color: var(--blue); }
.usual-answer p { margin-top: 8px; font-size: 16px; line-height: 1.6; }
.teaser-reveal { border-top: 1px solid var(--line); margin-top: 26px; padding-top: 7px; }
.teaser-reveal summary { cursor: pointer; padding: 12px 0; font-size: 13px; list-style-position: inside; }
.teaser-reveal summary > span { float: right; font-size: 18px; color: var(--blue); }
.teaser-reveal[open] summary > span { display: none; }
.teaser-reveal p { padding: 8px 0 6px; font-size: 16px; line-height: 1.6; }
.teaser-reveal summary:focus-visible { outline: 3px solid var(--blue); outline-offset: 4px; }

/* Learn list (02 / After watching) */
.learn-list { list-style: none; counter-reset: learn; margin: 24px 0 0; padding: 0; }
.learn-list li { counter-increment: learn; display: grid; grid-template-columns: 28px 1fr; gap: 16px; padding: 16px 0; border-top: 1px solid var(--line); font-size: 16px; line-height: 1.6; }
.learn-list li:before { content: counter(learn, decimal-leading-zero); font: italic 23px var(--serif); color: var(--blue); }

/* Try it at home (03 / A small experiment) */
.try-note { border-left: 3px solid var(--blue); padding: 28px; margin-top: 32px; background: #ece7db; }

/* Simplified on purpose */
.simple-list { padding-left: 18px; margin: 22px 0 0; }
.simple-list li { padding: 0 0 12px 6px; font-size: 16px; line-height: 1.6; }

/* Sources */
.source-list { padding-left: 24px; margin: 24px 0 0; }
.source-list li { padding: 10px 0 10px 8px; border-bottom: 1px solid var(--line); font-size: 16px; line-height: 1.6; overflow-wrap: anywhere; }
.source-list li::marker { font-family: 'Courier New', monospace; color: var(--muted); }
.source-list a { text-decoration: underline; text-underline-offset: 3px; }
.source-list a:hover { color: var(--orange); }
.sources-section { border-bottom: 0; }

/* Chapters */
.chapter-sheet ol { padding: 0; margin: 20px 0; list-style: none; }
.chapter-sheet li { border-top: 1px solid var(--line); }
.chapter-sheet li a { display: grid; grid-template-columns: 44px 1fr 12px; gap: 10px; padding: 14px 0; font-size: 12px; line-height: 1.5; transition: color .2s; }
.chapter-sheet li a:hover { color: var(--orange); }
.chapter-sheet .mono { color: var(--blue); font-size: 11px; letter-spacing: 0; }
.chapter-note { margin-top: 12px; color: var(--muted); font-size: 11px; }

/* Written Explainer & Monograph Body */
.written-explainer { scroll-margin-top: 30px; padding-block: 48px; }
.article-head { padding-bottom: 28px; border-bottom: 1px solid var(--ink); margin-bottom: 30px; }
.article-dek { font: italic 25px/1.4 var(--serif); margin-top: 20px; color: #59564f; }
.article-body { max-width: 66ch; font: 400 20px/1.6 var(--serif); overflow-wrap: break-word; }
.article-body > p { margin-block: 0 24px; }
.article-opening:first-letter { initial-letter: 3; float: left; font: 66px/.85 var(--serif); padding: 0; margin: 5px 12px 0 0; color: var(--blue); }
.article-body h3 { font-size: 32px; line-height: 1.15; letter-spacing: -.5px; margin: 40px 0 20px; scroll-margin-top: 30px; }
.article-body h3:focus-visible { outline: 2px solid var(--blue); outline-offset: 5px; }
.article-body strong { font-weight: 700; }
.article-callout { border-left: 3px solid var(--blue); padding: 10px 0 10px 22px; margin: 30px 0; }
.article-callout-label { display: block; margin-bottom: 8px; font: 600 11px/1.4 'Courier New', monospace; letter-spacing: 1.2px; text-transform: uppercase; color: var(--blue); }
.article-key { border-color: var(--orange); }
.article-key .article-callout-label { color: var(--orange); }
.article-try { border: 1px solid var(--line); background: #ebe5d8; padding: 24px; }
.article-try .article-callout-label { color: var(--ink); }

/* Figures & Technical Print Timestamps */
.article-figure { margin: 36px 0; }
.article-figure img { border: 1px solid var(--ink); aspect-ratio: 960/424; object-fit: contain; }
.article-figure figcaption, .article-frame-note { display: flex; align-items: baseline; gap: 18px; font: 14px/1.6 Inter, Arial, sans-serif; margin-top: 14px; }
.article-figure a, .article-frame-note a {
  flex-shrink: 0;
  font: 11px/1.6 'Courier New', monospace;
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--ink);
  padding: 2px 7px;
  border-radius: 0;
  text-decoration: none;
  transition: background .2s, border-color .2s;
}
.article-figure a:hover, .article-frame-note a:hover {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--paper);
}
.article-frame-note { padding: 18px 0; border-block: 1px solid var(--line); margin: 28px 0; }

/* In-motion Diagram Plate */
.motion-plate { border: 1px solid var(--ink); margin: 0 0 36px; background: #ebe5d8; }
.motion-plate figcaption { padding: 12px 14px; font-size: 10px; }
.motion-plate video { display: block; width: 100%; height: auto; aspect-ratio: 960/424; object-fit: contain; }
.motion-plate button {
  display: block;
  min-height: 44px;
  width: 100%;
  padding: 10px 14px;
  border: 0;
  border-top: 1px solid var(--ink);
  background: transparent;
  text-align: left;
  font: 12px/1.6 var(--sans);
  cursor: pointer;
  transition: background .2s, color .2s;
}
.motion-plate button[hidden] { display: none; }
.motion-plate button:hover { background: var(--ink); color: var(--paper); }
.motion-plate button:focus-visible { outline: 3px solid var(--blue); outline-offset: -3px; }
.motion-plate noscript p { padding: 12px 14px; font-size: 11px; }

/* Sticky Reading Guide Rail */
.article-rail {
  position: sticky;
  top: 24px;
  margin-top: 42px;
  padding-top: 22px;
  border-top: 1px solid var(--ink);
  max-height: calc(100dvh - 48px);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-gutter: stable;
  padding-right: 10px;
  padding-bottom: 10px;
}
.article-toc { display: block; }
.article-toc .section-no { font-size: 10px; margin-bottom: 10px; }
.article-toc h2 { font-size: 30px; letter-spacing: -.6px; }
.article-toc ol { list-style: none; margin: 18px 0 24px; padding: 0; border-left: 1px solid var(--line); }
.article-toc a { display: block; padding: 7px 12px; border-left: 2px solid transparent; margin-left: -1px; font: 12px/1.5 Inter, Arial, sans-serif; color: #59564f; transition: background .15s, color .15s; }
.article-toc a:hover { color: var(--blue); background: #ece7db; }
.article-toc a[aria-current="location"] { border-left: 3px solid var(--blue); color: var(--blue); background: #ebe5d8; font-weight: 600; }
.article-toc a:focus-visible { outline-offset: -3px; }

.rail-watch { border-top: 1px solid var(--line); padding-top: 18px; margin-top: 20px; }
.rail-watch h3 { font-size: 24px; margin-bottom: 14px; letter-spacing: -.3px; }
.rail-play { display: grid; grid-template-columns: 100px minmax(0, 1fr); gap: 14px; align-items: center; transition: color .2s; }
.rail-play img { border: 1px solid var(--ink); }
.rail-play > span { display: grid; gap: 5px; font-size: 12px; }
.rail-play .mono { font-size: 10px; color: var(--muted); letter-spacing: .5px; }
.rail-play:hover { color: var(--blue); }
.rail-subscribe { display: inline-block; margin-top: 20px; color: var(--orange); border-color: var(--orange); }

/* Related Shorts Section */
.related-section { border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); padding: 44px 0; }
.related-shorts { display: grid; grid-template-columns: repeat(var(--short-count, 3), minmax(0, 1fr)); max-width: 920px; gap: 32px; }
.related-shorts figure { display: flex; flex-direction: column; height: 100%; min-width: 0; max-width: 285px; }
.related-shorts .lite-player { border: 1px solid var(--ink); }
.related-shorts figcaption { display: flex; flex-direction: column; flex: 1; padding-top: 14px; }
.related-shorts figcaption .mono { color: var(--muted); font-size: 9px; }
.related-shorts h3 { font-size: 25px; line-height: 1.15; margin-top: 8px; }
.related-shorts .text-link { display: inline-block; margin-top: auto; padding-top: 16px; align-self: flex-start; }

/* Single Short Layout */
.related-shorts.is-single { display: block; max-width: 850px; }
.related-shorts.is-single figure { display: grid; grid-template-columns: minmax(0, 300px) minmax(0, 1fr); align-items: center; gap: 48px; max-width: none; }
.related-shorts.is-single figcaption { padding: 24px 0; border-top: 1px solid var(--line); flex: unset; }
.related-shorts.is-single h3 { font-size: 38px; line-height: 1.1; margin-top: 18px; max-width: 400px; }

/* Previous / Next Explainer Navigation */
.explainer-pagination { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; padding: 30px 0; border-bottom: 1px solid var(--ink); align-items: stretch; }
.explainer-pagination a { display: grid !important; grid-template-columns: 130px minmax(0, 1fr); align-content: start; align-items: start; gap: 20px; padding: 18px; border: 1px solid var(--line); transition: background .2s, border-color .2s; }
.explainer-pagination a:hover { border-color: var(--ink); background: #ebe5d8; }
.explainer-pagination img { border: 1px solid var(--ink); }
.adjacent-copy { display: flex; flex-direction: column; gap: 12px; }
.explainer-pagination .adjacent-copy > span:last-child { font: 26px/1.2 var(--serif); transition: color .2s; }
.explainer-pagination a:hover .adjacent-copy > span:last-child { color: var(--orange); }
.explainer-pagination .mono { font-size: 10px; color: var(--muted); }
.explainer-pagination a:last-child { grid-column: 2; }
.explainer-pagination a:only-child { grid-column: auto; }
.explainer-pagination .is-next:only-child { grid-column: 2; }

/* Screen reader only utility */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

/* Responsive adjustments */
@media(max-width: 1000px) and (min-width: 701px) {
  .watch-grid, .reading-grid { gap: 26px; grid-template-columns: minmax(0, 1.7fr) minmax(220px, 1fr); }
  .watch-plate figcaption { flex-wrap: wrap; gap: 10px; }
  .is-list .video-card { grid-template-columns: 140px minmax(200px, 1.2fr) 1.5fr; gap: 12px 20px; }
  .is-list p { grid-column: 3; grid-row: 1 / 3; }
  .is-list .card-foot { grid-column: 3; grid-row: 3; }
  .catalog-console { flex-wrap: wrap; }
  .catalog-view { margin-left: auto; }
  .explainer-pagination a { grid-template-columns: 90px minmax(0, 1fr); gap: 14px; }
  .explainer-pagination .adjacent-copy > span:last-child { font-size: 23px; }
}

@media(max-width: 999px) {
  .article-rail { display: none; }
  .reading-grid { grid-template-columns: minmax(0, 1fr); }
  .reading-sidebar { grid-row: 2; }
  .reading-main { display: contents; }
  .guess-note { grid-row: 1; }
  .chapter-sheet { margin-top: 30px; border-bottom: 1px solid var(--line); padding-bottom: 8px; }
}

@media(max-width: 700px) {
  .catalog-intro { grid-template-columns: 1fr; gap: 24px; padding: 36px 0 30px; }
  .catalog-intro h1 { font-size: 51px; letter-spacing: -1.8px; }
  .catalog-intro > p { font-size: 16px; }
  .catalog-section { padding-top: 22px; }
  .catalog-console { display: block; }
  .catalog-view { justify-content: flex-start; margin-top: 16px; margin-bottom: 22px; }
  .library-search { grid-template-columns: 1fr; gap: 10px; }
  .library-search input { font-size: 13px; padding: 14px 12px; }

  .is-list .video-card { grid-template-columns: 88px 1fr; gap: 6px 14px; padding: 16px 0; }
  .is-list .video-image { grid-row: 1 / 3; align-self: start; }
  .is-list .duration { bottom: 3px; right: 3px; font-size: 9px; padding: 0 4px; }
  .is-list h3 { grid-row: 2; font-size: 23px; }
  .is-list .card-meta { font-size: 8px; letter-spacing: .4px; }
  .is-list p { display: none; }
  .is-list .card-foot { grid-column: 2; grid-row: 3; padding-top: 4px; }

  .video-breadcrumb { gap: 10px; padding: 22px 0; font-size: 9px; }
  .explainer-heading { padding-top: 8px; }
  .explainer-heading h1 { font-size: 43px; line-height: 1.05; letter-spacing: -1.4px; margin: 22px 0 20px; }
  .explainer .edition-bar { font-size: 8px; letter-spacing: 0; }
  .watch-grid, .reading-grid { grid-template-columns: 1fr; gap: 30px; }
  .watch-grid { padding: 24px 0 30px; }
  .plate-label { font-size: 8px; padding: 10px 12px; letter-spacing: .6px; }
  .watch-plate figcaption { padding: 13px; font-size: 20px; }
  .watch-plate .play { height: 52px; width: 52px; font-size: 17px; }
  .video-spec { padding: 6px 0; }
  .video-spec dl { margin: 18px 0; }
  .video-spec dl > div { grid-template-columns: 90px 1fr; }
  .spec-fact p { font-size: 24px; max-width: 380px; }

  .reading-grid { padding-top: 28px; row-gap: 0; }
  .reading-main { display: contents; }
  .guess-note { grid-row: 1; padding: 23px 20px; }
  .chapter-sheet { grid-row: 2; margin-top: 30px; border-bottom: 1px solid var(--line); padding-bottom: 8px; }
  .chapter-sheet ol { margin-bottom: 12px; }
  .chapter-sheet li a { min-height: 48px; }
  .reading-main h2 { font-size: 33px; }
  .noticed { font-size: 24px; }
  .reading-section { padding: 30px 0; }
  .try-note { padding: 23px 20px; }

  .article-head { padding-bottom: 24px; }
  .article-dek { font-size: 24px; }
  .article-body { font-size: 20px; }
  .article-body h3 { font-size: 29px; }
  .article-opening:first-letter { initial-letter: normal; font-size: 62px; margin-top: 5px; }
  .article-callout { padding-left: 18px; }
  .article-try { padding: 20px; }
  .article-figure figcaption { align-items: flex-start; gap: 12px; font-size: 14px; }
  .article-figure a { margin-top: 1px; }
  .article-frame-note { gap: 12px; }
  .motion-plate { max-width: 400px; margin-top: 28px; }
  .written-explainer { padding-block: 36px; }

  .related-section { padding: 32px 0; }
  .related-shorts { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 12px; }
  .related-shorts .play { height: 44px; width: 44px; font-size: 14px; }
  .related-shorts figcaption .mono { font-size: 8px; letter-spacing: .3px; }
  .related-shorts h3 { font-size: 21px; }
  .related-shorts .text-link { font-size: 10px; margin-top: 14px; }
  .related-shorts.is-single figure { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 20px; }
  .related-shorts.is-single h3 { font-size: 25px; margin-top: 10px; }
  .related-shorts.is-single figcaption { padding: 14px 0; }

  .explainer-pagination { grid-template-columns: 1fr; gap: 14px; padding: 26px 0; }
  .explainer-pagination a { grid-template-columns: 90px minmax(0, 1fr); padding: 14px; min-height: 110px; }
  .explainer-pagination a:last-child { grid-column: 1; }
  .explainer-pagination .is-next:only-child { grid-column: 1; }
  .explainer-pagination a > span:last-child { font-size: 22px; }
  .explainer-pagination .mono { font-size: 8px; letter-spacing: .3px; }
  .source-list li { line-height: 1.8; }
}

@media(prefers-reduced-motion: reduce) {
  .explainer .lite img, .video-library .video-image img { transition: none; transform: none; }
}