/* ============================================================================
   The reader.

   One rule governs every decision here: the reading column is the page, and
   everything else is furniture that must recede. The rails are quiet, the bars
   thin, the chrome desaturated — so that the only thing with real contrast and
   real weight on screen is the text of the book.
   ========================================================================== */

.reader-body { --rail-w: 290px; --rbar-h: 52px; }

/* ================================================== reading context bar */
.rbar {
  position: sticky; inset-block-start: var(--header-h); z-index: calc(var(--z-header) - 1);
  background: color-mix(in srgb, var(--surface-2) 92%, transparent);
  backdrop-filter: blur(14px) saturate(1.3);
  -webkit-backdrop-filter: blur(14px) saturate(1.3);
  border-block-end: 1px solid var(--line-soft);
}
.rbar-row {
  display: flex; align-items: center; gap: var(--s-2);
  height: var(--rbar-h);
  padding-inline: clamp(var(--s-3), 2.5vw, var(--s-6));
}

/* where the reader is, in the author's own words */
.rbar-where {
  display: flex; align-items: center; gap: var(--s-2);
  min-width: 0; font-size: var(--fs-xs); color: var(--ink-3);
}
.where-sec {
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  max-width: 34ch;
}
.where-pg {
  flex: none; color: var(--accent); font-weight: 600;
  padding-inline-start: var(--s-2); border-inline-start: 1px solid var(--line);
}
@media (max-width: 700px) { .rbar-where { display: none; } }

/* ---- in-book search ----------------------------------------------------- */
.rsearch {
  display: flex; align-items: center; gap: var(--s-1);
  width: min(430px, 46vw); min-width: 160px;
  padding-inline: var(--s-3) var(--s-1);
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-pill); height: 36px;
  transition: border-color var(--dur-1) var(--ease), box-shadow var(--dur-1) var(--ease);
}
.rsearch:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-weak); }
.rsearch-ico { color: var(--ink-3); flex: none; }
.rsearch input {
  flex: 1 1 auto; min-width: 0; border: 0; background: none; outline: none;
  font-size: var(--fs-sm); color: var(--ink);
}
.rsearch input::-webkit-search-cancel-button { display: none; }
.rsearch-scope {
  flex: none; border: 0; background: none; cursor: pointer;
  font-size: var(--fs-2xs); color: var(--ink-3);
  padding-inline: var(--s-1); max-width: 5.5rem;
  border-inline-start: 1px solid var(--line);
}
.search-nav { display: flex; align-items: center; gap: 2px; flex: none; }
.match-counter {
  font-size: var(--fs-2xs); color: var(--ink-3);
  font-variant-numeric: tabular-nums; white-space: nowrap;
  padding-inline: var(--s-1);
}
@media (max-width: 560px) { .rsearch-scope { display: none; } }

/* ---- segmented view control -------------------------------------------- */
.seg-btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 30px; padding: 0 var(--s-3);
  font-size: var(--fs-xs); font-weight: 500; color: var(--ink-2);
  border-radius: var(--r-sm); white-space: nowrap;
  transition: background var(--dur-2) var(--ease), color var(--dur-2) var(--ease),
              box-shadow var(--dur-2) var(--ease);
}
.seg-btn:hover { color: var(--ink); }
.seg-btn.is-on {
  background: var(--surface); color: var(--ink); font-weight: 600; box-shadow: var(--sh-1);
}
.seg-out {
  min-width: 3.4rem; text-align: center; font-size: var(--fs-2xs);
  color: var(--ink-2); font-variant-numeric: tabular-nums; align-self: center;
}

/* ================================================== reading settings panel */
.rpanel {
  border-block-start: 1px solid var(--line-soft);
  background: var(--surface);
  animation: panel-down var(--dur-2) var(--ease);
  overflow: hidden;
}
@keyframes panel-down { from { opacity: 0; transform: translateY(-6px); } }
@media (prefers-reduced-motion: reduce) { .rpanel { animation: none; } }

.rpanel-inner {
  display: grid; gap: var(--s-4) var(--s-8);
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  padding: var(--s-5) clamp(var(--s-3), 2.5vw, var(--s-6));
  max-width: 1180px;
}
.set-row { display: flex; align-items: center; gap: var(--s-3); flex-wrap: wrap; }
.set-row-wide { grid-column: 1 / -1; gap: var(--s-6); }
.set-label { font-size: var(--fs-xs); color: var(--ink-3); min-width: 5.5rem; }
.goto { display: flex; gap: var(--s-2); flex: 1 1 auto; max-width: 440px; }
.goto .field { min-width: 0; }
.set-note {
  grid-column: 1 / -1; font-size: var(--fs-2xs); color: var(--ink-3);
  line-height: 1.7; max-width: 80ch;
  padding-block-start: var(--s-2); border-block-start: 1px dashed var(--line-soft);
}
.only-mobile-flex { display: none; }
@media (max-width: 860px) { .only-mobile-flex { display: flex; } }

/* ============================================================== workspace */
.rlayout {
  display: grid;
  grid-template-columns: var(--rail-w) minmax(0, 1fr);
  max-width: var(--shell-max); margin-inline: auto;
  align-items: start;
}
@media (max-width: 1080px) { .rlayout { grid-template-columns: minmax(0, 1fr); } }

/* ------------------------------------------------------------- TOC rail */
.toc-rail {
  position: sticky;
  inset-block-start: calc(var(--header-h) + var(--rbar-h));
  block-size: calc(100dvh - var(--header-h) - var(--rbar-h));
  display: flex; flex-direction: column;
  border-inline-start: 1px solid var(--line-soft);
  background: var(--surface-2);
}
html[dir="rtl"] .toc-rail { border-inline-start: 0; border-inline-end: 1px solid var(--line-soft); }

.rail-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--s-4) var(--s-4) var(--s-2);
}
.rail-title { font-size: var(--fs-sm); font-family: var(--font-ui); font-weight: 600; color: var(--ink-3); }
.rail-filter { padding: 0 var(--s-4) var(--s-3); }
.rail-filter .field { height: 34px; font-size: var(--fs-xs); }
.rail-empty { padding: var(--s-6) var(--s-4); font-size: var(--fs-xs); color: var(--ink-3); text-align: center; }

.toc {
  flex: 1 1 auto; overflow-y: auto; overscroll-behavior: contain;
  list-style: none; margin: 0;
  padding: 0 var(--s-3) var(--s-10);
}
.toc ol { list-style: none; margin: 0; padding: 0; }

/* the hierarchy is read from indentation and weight, not from boxes */
.toc-item { display: flex; align-items: stretch; gap: 0; }
.toc-link {
  flex: 1 1 auto; min-width: 0;
  display: flex; align-items: baseline; gap: var(--s-2);
  padding: var(--s-2) var(--s-2);
  font-size: var(--fs-xs); line-height: 1.6; color: var(--ink-2);
  text-decoration: none; border-radius: var(--r-sm);
  transition: background var(--dur-1) var(--ease), color var(--dur-1) var(--ease);
}
.toc-link:hover { background: var(--surface-3); color: var(--ink); }
.toc-link .pg {
  flex: none; margin-inline-start: auto;
  font-size: .68rem; color: var(--ink-3); font-variant-numeric: tabular-nums;
}
.toc-link .lab { flex: none; color: var(--accent); font-weight: 600; }

/* current position: a rule plus a weight change, never colour alone */
.toc-link.is-current {
  background: var(--accent-weak); color: var(--ink); font-weight: 600;
  box-shadow: inset 2px 0 0 var(--accent);
}
html[dir="rtl"] .toc-link.is-current { box-shadow: inset -2px 0 0 var(--accent); }

.toc > li > .toc-item > .toc-link { font-size: var(--fs-sm); font-weight: 600; color: var(--ink); }
.toc-kids { padding-inline-start: var(--s-3); border-inline-start: 1px solid var(--line-soft); margin-inline-start: var(--s-3); }

.toc-twist {
  flex: none; display: grid; place-items: center;
  width: 26px; color: var(--ink-3); border-radius: var(--r-xs);
}
.toc-twist:hover { color: var(--ink); background: var(--surface-3); }
.toc-twist svg { width: 14px; height: 14px; transition: transform var(--dur-2) var(--ease); }
.toc-twist[aria-expanded="false"] svg { transform: rotate(90deg); }
html[dir="rtl"] .toc-twist[aria-expanded="false"] svg { transform: rotate(-90deg); }

/* mobile: the rail becomes a sheet over the text, never a permanent column */
@media (max-width: 1080px) {
  /* inset-inline-start is the right edge in RTL — the side the rail occupies
     on desktop — so the drawer keeps its side and only its travel flips.
     It is removed from layout when closed rather than parked off-screen: a
     fixed element translated past the viewport still extends the scrollable
     area, and `overflow: clip` on the root does not clip fixed descendants. */
  .toc-rail {
    position: fixed; inset-block: 0; inset-inline-start: 0;
    z-index: var(--z-panel); width: min(86vw, 330px);
    background: var(--surface); box-shadow: var(--sh-4);
    block-size: 100dvh;
    display: none;
  }
  body.toc-open .toc-rail { display: flex; animation: rail-in var(--dur-3) var(--ease-soft); }
  @keyframes rail-in { from { transform: translateX(-102%); } }
  html[dir="rtl"] body.toc-open .toc-rail { animation-name: rail-in-rtl; }
  @keyframes rail-in-rtl { from { transform: translateX(102%); } }
  .rail-scrim {
    position: fixed; inset: 0; z-index: calc(var(--z-panel) - 1);
    background: color-mix(in srgb, var(--navy) 50%, transparent);
    animation: fade-in var(--dur-2) var(--ease);
  }
  body.toc-open { overflow: hidden; }
}
@media (prefers-reduced-motion: reduce) { body.toc-open .toc-rail { animation: none; } }

/* ============================================================ the reading */
.reader {
  min-width: 0;
  padding: var(--s-8) clamp(var(--s-3), 3vw, var(--s-10)) var(--s-24);
}
.reader:focus-visible { outline: none; }

.reader-loading { max-width: var(--measure); margin-inline: auto; padding-block: var(--s-8); }
.skel-h { height: 34px; width: 55%; margin-block-end: var(--s-6); }
.skel-p { height: 15px; margin-block-end: var(--s-3); }
.reader-loading-note {
  display: flex; align-items: center; gap: var(--s-2);
  margin-block-start: var(--s-8); font-size: var(--fs-sm); color: var(--ink-3);
}

.book { max-width: var(--measure); margin-inline: auto; }

.book-h1 {
  font-size: var(--fs-title); text-align: center; color: var(--ink);
  padding-block: var(--s-8) var(--s-10);
  margin-block-end: var(--s-10);
  border-block-end: 1px solid var(--line-soft);
}
.book-h1-sub {
  display: block; font-size: var(--fs-md); font-weight: 400;
  color: var(--ink-3); margin-block-start: var(--s-3);
  font-family: var(--font-ui);
}

/* -------------------------------------------------------------- one page */
.book-page {
  position: relative;
  padding-block: var(--s-6) var(--s-10);
  scroll-margin-block-start: calc(var(--header-h) + var(--rbar-h) + var(--s-4));
}
.book-page + .book-page { border-block-start: 1px solid var(--line-soft); }

/* the page marker: present, legible, and quiet */
.page-marker {
  display: flex; align-items: center; gap: var(--s-2) var(--s-3); flex-wrap: wrap;
  margin-block-end: var(--s-5);
  font-size: var(--fs-2xs); color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}
.page-marker .bp {
  font-weight: 600; color: var(--ink-2);
  padding: var(--s-1) var(--s-2);
  background: var(--surface-3); border-radius: var(--r-sm);
  scroll-margin-block-start: calc(var(--header-h) + var(--rbar-h) + var(--s-4));
}
.page-marker .pdfno { color: var(--ink-3); }
.page-marker .est { color: var(--warn); }
.page-marker .review-badge {
  color: var(--warn); background: var(--warn-weak);
  padding: 0 var(--s-2); border-radius: var(--r-sm); font-weight: 600;
}
.page-marker .spacer { flex: 1 1 auto; }
.page-tools { display: flex; gap: 2px; opacity: 0; transition: opacity var(--dur-2) var(--ease); }
.book-page:hover .page-tools, .page-tools:focus-within { opacity: 1; }
@media (pointer: coarse) { .page-tools { opacity: 1; } }

/* ------------------------------------------------------ the text itself */
.page-grid { display: grid; gap: var(--s-6); }
.book-body { min-width: 0; }

.book-body p.blk, .book-body li {
  font-family: var(--font-read);
  overflow-wrap: break-word;
  font-size: var(--fs-read);
  line-height: var(--lh-read);
  color: var(--ink);
  text-align: justify;
  text-justify: inter-word;
  hanging-punctuation: first last;
  margin-block-end: var(--s-4);
  scroll-margin-block-start: calc(var(--header-h) + var(--rbar-h) + var(--s-6));
}
/* a short measure plus justification opens rivers of white space in Arabic */
@media (max-width: 620px) {
  .book-body p.blk, .book-body li { text-align: start; }
}

.book-body .bh {
  font-family: var(--font-read);
  color: var(--ink);
  line-height: var(--lh-head);
  margin-block: var(--s-8) var(--s-4);
  scroll-margin-block-start: calc(var(--header-h) + var(--rbar-h) + var(--s-6));
}
.book-body h2.bh { font-size: calc(1.6rem * var(--fscale)); }
.book-body h3.bh { font-size: calc(1.4rem * var(--fscale)); }
.book-body h4.bh { font-size: calc(1.25rem * var(--fscale)); }
.book-body h5.bh, .book-body h6.bh { font-size: calc(1.12rem * var(--fscale)); }
.book-body .bh .lab {
  display: block; font-family: var(--font-ui);
  font-size: var(--fs-xs); font-weight: 600; color: var(--accent);
  letter-spacing: .02em; margin-block-end: var(--s-1);
}
/* a heading that opens a باب or فصل earns a rule */
.book-body h2.bh, .book-body h3.bh {
  padding-block-end: var(--s-3);
  border-block-end: 1px solid var(--line-soft);
}

.book-body p[dir="ltr"], .srcq p[dir="ltr"] {
  font-family: var(--font-ui); font-size: calc(.95rem * var(--fscale));
  text-align: start; direction: ltr;
}

/* footnotes ------------------------------------------------------------- */
.footnotes {
  margin-block-start: var(--s-8); padding-block-start: var(--s-4);
  border-block-start: 1px solid var(--line);
}
.footnotes ol { list-style: none; margin: 0; padding: 0; }
.fn-item {
  font-size: var(--fs-read-note) !important;
  line-height: 1.95 !important; color: var(--ink-2) !important;
  margin-block-end: var(--s-3) !important;
  display: flex; flex-wrap: wrap; gap: var(--s-1) var(--s-2);
  min-width: 0;
}
/* footnotes carry citations, URLs and long Latin references; let them reflow
   rather than push the page sideways */
.fn-item > * { min-width: 0; }
.footnotes, .fn-item { overflow-wrap: anywhere; }
.fn-num, .fn-back {
  flex: none; color: var(--accent); font-weight: 600;
  font-family: var(--font-ui); font-size: var(--fs-2xs);
  text-decoration: none;
}
.fn-back:hover { text-decoration: underline; }
a.anchor {
  color: var(--accent); text-decoration: none; font-size: .72em;
  vertical-align: super; font-family: var(--font-ui); font-weight: 600;
  padding-inline: 1px; scroll-margin-block-start: 7rem;
}
a.anchor:hover { text-decoration: underline; }
body.no-fn .footnotes { display: none; }

/* desktop: the reference answers in place, without losing the reader's line */
.fn-pop {
  position: absolute; z-index: var(--z-panel);
  max-width: min(420px, 78vw);
  padding: var(--s-3) var(--s-4);
  background: var(--surface-over); color: var(--ink-2);
  border: 1px solid var(--line); border-radius: var(--r-md);
  box-shadow: var(--sh-3);
  font-family: var(--font-read); font-size: .98rem; line-height: 1.9;
  animation: fade-in var(--dur-2) var(--ease);
}
.fn-pop .fn-pop-k {
  display: block; font-family: var(--font-ui); font-size: var(--fs-2xs);
  font-weight: 600; color: var(--accent); margin-block-end: var(--s-1);
}
@media (prefers-reduced-motion: reduce) { .fn-pop { animation: none; } }

/* search marks ---------------------------------------------------------- */
mark.hit { background: var(--mark); color: var(--mark-ink); border-radius: 2px; padding: 0 .12em; }
mark.hit.live { background: var(--mark-live); box-shadow: 0 0 0 2px var(--mark-live); }
.flash { animation: flash var(--dur-4) 2 var(--ease); border-radius: var(--r-sm); }
@keyframes flash { 50% { background: var(--accent-weak); } }
@media (prefers-reduced-motion: reduce) { .flash { animation: none; outline: 2px solid var(--accent); } }

/* ----------------------------------------------------- the original scan */
.scan { display: none; margin: 0; }
.scan figcaption {
  font-size: var(--fs-2xs); color: var(--ink-3);
  text-align: center; padding-block-start: var(--s-2);
}
.scan img {
  width: 100%; height: auto; border-radius: var(--r-sm);
  border: 1px solid var(--line); background: var(--surface);
  box-shadow: var(--sh-1);
}

body[data-view="both"] .page-grid {
  grid-template-columns: minmax(0, 1fr) minmax(0, .82fr);
  gap: var(--s-8); align-items: start;
}
body[data-view="both"] .scan { display: block; position: sticky; inset-block-start: 7.5rem; }
body[data-view="both"] .book { max-width: min(1220px, 100%); }

body[data-view="scan"] .book-body { display: none; }
body[data-view="scan"] .scan { display: block; }
body[data-view="scan"] .book { max-width: min(880px, 100%); }

@media (max-width: 900px) {
  body[data-view="both"] .page-grid { grid-template-columns: minmax(0, 1fr); }
  body[data-view="both"] .scan { position: static; }
}

/* paragraph copy affordance --------------------------------------------- */
.para-copy {
  position: absolute; z-index: 5;
  display: grid; place-items: center;
  width: 30px; height: 30px;
  color: var(--ink-3); background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--r-sm);
  box-shadow: var(--sh-1);
  transition: color var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease);
}
.para-copy:hover { color: var(--accent); border-color: var(--accent-line); }
.para-copy svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.8; }

/* ------------------------------------------------------- results panel */
.search-panel {
  position: fixed; inset-block: calc(var(--header-h) + var(--rbar-h)) 0;
  inset-inline-end: 0; z-index: var(--z-rail);
  width: min(430px, 92vw);
  display: flex; flex-direction: column;
  background: var(--surface); border-inline-start: 1px solid var(--line);
  box-shadow: var(--sh-3);
  animation: sp-in var(--dur-3) var(--ease-soft);
}
html[dir="rtl"] .search-panel {
  inset-inline-end: auto; inset-inline-start: 0;
  border-inline-start: 0; border-inline-end: 1px solid var(--line);
}
@keyframes sp-in { from { opacity: 0; transform: translateX(-16px); } }
@media (prefers-reduced-motion: reduce) { .search-panel { animation: none; } }

.sp-head {
  display: flex; align-items: center; justify-content: space-between; gap: var(--s-3);
  padding: var(--s-3) var(--s-4);
  border-block-end: 1px solid var(--line-soft); background: var(--surface-2);
}
.sp-summary { font-size: var(--fs-xs); color: var(--ink-2); }
.results { flex: 1 1 auto; overflow-y: auto; list-style: none; margin: 0; padding: var(--s-2); }
.res {
  display: block; width: 100%; text-align: start;
  padding: var(--s-3); border-radius: var(--r-sm);
  transition: background var(--dur-1) var(--ease);
}
.res:hover, .res:focus-visible { background: var(--surface-3); }
.res.is-current { background: var(--accent-weak); box-shadow: inset 2px 0 0 var(--accent); }
html[dir="rtl"] .res.is-current { box-shadow: inset -2px 0 0 var(--accent); }
.res-head {
  display: flex; gap: var(--s-2); align-items: baseline;
  font-size: var(--fs-2xs); color: var(--ink-3); margin-block-end: var(--s-1);
}
.res-page { color: var(--accent); font-weight: 600; white-space: nowrap; }
.res-snip { display: block; font-family: var(--font-read); font-size: 1rem; line-height: 1.85; color: var(--ink-2); }
.res-more { padding: var(--s-3); font-size: var(--fs-xs); color: var(--ink-3); }

@media (max-width: 720px) { .search-panel { inset-block-start: 0; width: 100vw; } }

/* ------------------------------------------------------- mobile dock */
.rdock {
  position: fixed; inset-block-end: 0; inset-inline: 0; z-index: var(--z-rail);
  display: none; align-items: stretch;
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-block-start: 1px solid var(--line);
  padding-block-end: env(safe-area-inset-bottom);
}
@media (max-width: 860px) { .rdock { display: flex; } .reader { padding-block-end: var(--s-20); } }
.rdock button {
  flex: 1 1 0; display: flex; flex-direction: column; align-items: center;
  justify-content: center; gap: 2px; min-height: 54px;
  font-size: .68rem; color: var(--ink-3);
  transition: color var(--dur-1) var(--ease);
}
.rdock button:hover, .rdock button[aria-pressed="true"] { color: var(--accent); }
.rdock .ico { width: 19px; height: 19px; }

/* ------------------------------------------------------ review mode */
body.review .lc-low  { background: color-mix(in srgb, var(--danger) 12%, transparent); }
body.review .lc-med  { background: color-mix(in srgb, var(--warn) 14%, transparent); }

/* --------------------------------------------------------------- print */
@media print {
  .rbar, .toc-rail, .search-panel, .rdock, .para-copy, .rail-scrim,
  .page-tools, .fn-pop { display: none !important; }
  .rlayout { display: block; }
  .reader { padding: 0; }
  .book { max-width: none; }
  .book-page { break-inside: auto; border: 0; padding-block: var(--s-4); }
  .book-body p.blk { orphans: 3; widows: 3; }
  .scan { display: none !important; }
}

/* ---- classes app.js emits that the new system must also dress ---------- */
.title-block {
  font-family: var(--font-read); text-align: center;
  color: var(--ink-2); line-height: 2;
  padding-block: var(--s-4); margin-block-end: var(--s-6);
}
.title-block .ttl { display: block; font-size: calc(1.15rem * var(--fscale)); }
.footnote-ref { font-size: .72em; vertical-align: super; color: var(--accent); }
.book-body .blk.li {
  padding-inline-start: var(--s-5);
  border-inline-start: 2px solid var(--line-soft);
}
.book-body .blk.cont { text-indent: 0; }
.ocr-uncertain { border-block-end: 1px dotted var(--warn); }
.icon-btn.tiny {
  display: inline-grid; place-items: center; width: 28px; height: 28px;
  color: var(--ink-3); border-radius: var(--r-xs);
  transition: color var(--dur-1) var(--ease), background var(--dur-1) var(--ease);
}
.icon-btn.tiny:hover { color: var(--accent); background: var(--surface-3); }
.icon-btn.tiny svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.8; }
@media (pointer: coarse) { .icon-btn.tiny { width: 36px; height: 36px; } }

/* ======================================== the course's footprint in the book */
/* A paragraph that a lecture teaches carries a quiet mark. It stays out of the
   way until the paragraph is hovered or focused: the book must read as the
   book, not as a syllabus. It is never selectable and never copied. */
.lec-chip {
  display: inline-flex; align-items: center; gap: var(--s-1);
  font-family: var(--font-ui); font-size: .68rem; line-height: 1.4;
  color: var(--accent); white-space: nowrap;
}
.lec-chip svg {
  width: 11px; height: 11px; flex: none;
  fill: none; stroke: currentColor; stroke-width: 1.8;
  stroke-linecap: round; stroke-linejoin: round;
}
.lec-chip a { color: inherit; text-decoration: none; border-block-end: 1px dotted currentColor; }
.lec-chip a:hover { border-block-end-style: solid; }

.lec-chip.on-page {
  background: var(--accent-weak); border: 1px solid var(--accent-line);
  border-radius: var(--r-pill); padding: 1px var(--s-2);
}
.lec-para {
  margin-inline-start: var(--s-2);
  opacity: 0; transition: opacity var(--dur-2) var(--ease);
  user-select: none; -webkit-user-select: none;
}
.book-body p:hover > .lec-para, .book-body .bh:hover > .lec-para,
.lec-para:focus-within { opacity: 1; }
@media (hover: none) { .lec-para { opacity: .8; } }
body.no-lec-links .lec-para, body.no-lec-links .lec-chip.on-page { display: none; }

/* lecture hits inside the reader's own results panel */
.lec-results { border-block-start: 1px solid var(--line); margin-block-start: var(--s-2); }
.lec-res-head {
  display: flex; align-items: center; gap: var(--s-2);
  font-size: var(--fs-2xs); color: var(--ink-3);
  padding: var(--s-4) var(--s-3) var(--s-2);
}
a.lec-res {
  display: block; padding: var(--s-3); border-radius: var(--r-sm);
  text-decoration: none; color: inherit;
  transition: background var(--dur-1) var(--ease);
}
a.lec-res:hover, a.lec-res:focus-visible { background: var(--surface-3); }

body[data-qscope="lectures"] #searchResults, body[data-qscope="lectures"] #searchNav { display: none; }

@media print { .lec-chip, .lec-para, .lec-results { display: none !important; } }