/* ═══════════════════════════════════════════════════════
   FLIPBOOK THPT LÊ CHÂN · "HÀNH TRÌNH VÀNG"
   Palette: Burgundy + Gold + Ivory
   Fonts: Crimson Pro (serif) + DM Sans (sans)
   ═══════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Crimson+Pro:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500;1,600&family=DM+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&display=swap');

:root {
  --bg: #f4f0ea;
  --paper: #fffdf8;
  --ink: #2c1a0e;
  --muted: #7a695a;
  --burgundy: #6b1d2a;
  --burgundy-dark: #4e1320;
  --burgundy-light: #a13347;
  --gold: #c49a3c;
  --gold-dark: #a17e2c;
  --gold-light: #e8c96e;
  --warm-gray: #d8d0c4;
  --line: #cec3b2;
  --serif: 'Crimson Pro', Georgia, serif;
  --sans: 'DM Sans', system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
  height: 100dvh;
  display: flex;
  flex-direction: column;
}

button, a, input { -webkit-tap-highlight-color: transparent; }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; touch-action: manipulation; }
button:disabled { opacity: .28; cursor: default; }
button:focus-visible, a:focus-visible { outline: 2px solid var(--gold); outline-offset: 4px; }
a { color: inherit; text-decoration: none; }
[hidden] { display: none !important; }

/* ─── TOP BAR (burgundy dark) ─── */
.topbar {
  height: 58px;
  background: var(--burgundy-dark);
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 14px;
  flex-shrink: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(78,19,32,.35);
}

.topbar-logo {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid rgba(196,154,60,.5);
  overflow: hidden;
  flex-shrink: 0;
}
.topbar-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #fff;
}

.topbar-title {
  flex: 1;
  min-width: 0;
}
.topbar-title h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.topbar-title .topbar-sub {
  font-size: 11px;
  font-weight: 500;
  color: var(--gold-light);
  letter-spacing: 1.8px;
  text-transform: uppercase;
}

.topbar-sep {
  width: 1px;
  height: 24px;
  background: rgba(255,255,255,.15);
}

.custom-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(196,154,60,.16);
  border: 1px solid rgba(196,154,60,.5);
  color: var(--gold-light);
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 12px;
}
.custom-badge button {
  background: rgba(255,255,255,.15);
  border-radius: 50%;
  width: 16px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: #fff;
  cursor: pointer;
  line-height: 1;
  padding: 0;
  transition: background .15s;
}
.custom-badge button:hover {
  background: var(--burgundy-light);
}

.tb-btn {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,.7);
  transition: all .15s;
}
.tb-btn:hover { background: rgba(255,255,255,.12); color: #fff; }
.tb-btn svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ─── PROGRESS BAR ─── */
#progress-bar {
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  width: 4%;
  transition: width .4s ease;
  flex-shrink: 0;
}

/* ─── READER AREA ─── */
.reader {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

.book-stage {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 52px;
  position: relative;
  overflow: hidden;
}

.book-mount {
  width: 100%;
  height: 100%;
  max-width: 1300px;
  margin: auto;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

#book {
  width: 100%;
  height: 100%;
}

.loading-note {
  position: absolute;
  font-family: var(--serif);
  font-style: italic;
  font-size: 16px;
  color: var(--muted);
}

/* ─── BOTTOM NAV ─── */
.bottom-nav {
  height: 50px;
  background: var(--bg);
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-shrink: 0;
  padding: 0 16px;
}

.nav-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--burgundy);
  background: rgba(107,29,42,.06);
  transition: all .15s;
}
.nav-btn:hover:not(:disabled) {
  background: var(--burgundy);
  color: #fff;
  transform: scale(1.08);
}
.nav-btn svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.page-info {
  min-width: 100px;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: 1px;
  color: var(--ink);
}
.page-info .of {
  color: var(--muted);
  font-weight: 400;
}

/* ─── PAGE CONTENT SYSTEM ─── */
.page {
  background: var(--paper);
  overflow: hidden;
  box-shadow: 0 10px 32px rgba(44,26,14,.18);
}
.page.--left {
  box-shadow: -8px 10px 32px rgba(44,26,14,.18), inset -12px 0 22px -16px rgba(44,26,14,.3);
}
.page.--right {
  box-shadow: 8px 10px 32px rgba(44,26,14,.18), inset 12px 0 22px -16px rgba(44,26,14,.3);
}
.page.--blank {
  background: var(--bg, #f4efe6) !important;
  box-shadow: none !important;
  border: none !important;
  pointer-events: none;
}

.page-content {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  container-type: inline-size;
  background: var(--paper);
  font-family: var(--sans);
  color: var(--ink);
}

.prose-wrap {
  position: absolute;
  inset: 5.5% 7% 8%;
  display: flex;
  flex-direction: column;
  gap: 2.4cqw;
}

.page-content h2,
.page-content h3,
.page-content p,
.page-content blockquote,
.page-content figure { margin: 0; }

.page-content h2 {
  font-family: var(--serif);
  font-size: 7.8cqw;
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -.15cqw;
  color: var(--burgundy-dark);
}
.page-content h2 em {
  font-weight: 500;
  font-style: italic;
  color: var(--gold-dark);
}
.page-content p {
  font-size: clamp(13px, 3cqw, 20px);
  line-height: 1.65;
}

/* Labels */
.pg-label {
  display: flex;
  align-items: center;
  gap: 2cqw;
  margin-bottom: .5cqw;
}
.pg-label-num {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(11px, 2.4cqw, 15px);
  color: var(--burgundy);
  letter-spacing: .1cqw;
}
.pg-label-text {
  font-size: clamp(10px, 2.2cqw, 13px);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .22cqw;
  color: var(--gold-dark);
}

/* Folio */
.folio {
  position: absolute;
  left: 7%;
  right: 7%;
  bottom: 3%;
  display: flex;
  justify-content: flex-end;
  font-size: clamp(11px, 2.2cqw, 14px);
  color: var(--muted);
  z-index: 2;
}
.folio b { font-weight: 600; color: var(--burgundy); }

/* Utilities */
.divider {
  width: 12cqw;
  height: 2px;
  background: var(--burgundy);
  flex-shrink: 0;
}
.divider-light { background: rgba(255,255,255,.3); }
.divider-gold { background: var(--gold); }

.note-serif {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(16px, 3.6cqw, 24px);
  line-height: 1.5;
  color: var(--burgundy);
}
.note-small {
  font-size: clamp(11px, 2.5cqw, 16px);
  line-height: 1.6;
  color: var(--muted);
}
.caption {
  font-size: clamp(11px, 2.4cqw, 15px) !important;
  color: var(--muted);
}
.sign-off {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(15px, 3.6cqw, 22px) !important;
  color: var(--burgundy);
  text-align: right;
  margin-top: auto !important;
}
.drop-cap::first-letter {
  font-family: var(--serif);
  float: left;
  font-size: 12cqw;
  line-height: .82;
  margin: 1cqw 2cqw 0 0;
  font-weight: 700;
  color: var(--burgundy);
}

.photo-grow { flex: 1; min-height: 0; }
.photo-wide { aspect-ratio: 1.6; }
.photo-short { aspect-ratio: 2.2; }
.photo-tilt { transform: rotate(-2deg); box-shadow: 0 6px 18px rgba(44,26,14,.18) !important; }

/* ─── PHOTOS ─── */
.pg-photo {
  display: block;
  position: relative;
  overflow: hidden;
  background: var(--warm-gray);
  flex-shrink: 1;
  min-height: 0;
  cursor: zoom-in;
  border-radius: 3px;
}
.pg-photo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
  transition: transform .4s ease;
}
.pg-photo:hover img { transform: scale(1.03); }
.zoom-hint {
  position: absolute;
  right: 6px;
  bottom: 6px;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  background: rgba(255,253,248,.88);
  color: var(--burgundy);
  border-radius: 50%;
  opacity: 0;
  transition: opacity .2s;
  pointer-events: none;
}
.zoom-hint svg {
  width: 12px;
  height: 12px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
}
.pg-photo:hover .zoom-hint { opacity: 1; }

/* Photo grids */
.pg-duo { display: grid; grid-template-columns: 1fr 1fr; gap: 2cqw; min-height: 0; }
.pg-duo .pg-photo { height: 100%; }
.pg-quad { display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; gap: 2cqw; min-height: 0; flex: 1; }
.pg-quad .pg-photo { height: 100%; }
.pg-trio { display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr; gap: 2cqw; min-height: 0; flex: 1; }
.pg-trio .pg-photo:first-child { grid-column: 1 / -1; }
.pg-trio .pg-photo { height: 100%; }
.pg-mosaic { display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: 1fr 1fr 1fr; gap: 1.5cqw; }
.pg-mosaic .pg-photo { height: 100%; border-radius: 2px; }

/* ─── COVER PAGE ─── */
.pg-cover .page-content {
  background: var(--burgundy-dark);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}
.pg-cover .cover-bg {
  position: absolute !important;
  inset: 0;
  height: 100%;
  width: 100%;
  border-radius: 0;
  z-index: 0;
}
.pg-cover .cover-bg img {
  filter: brightness(.3) saturate(.6);
}
.pg-cover .cover-badge {
  position: absolute;
  top: 6%;
  left: 50%;
  transform: translateX(-50%);
  font-size: clamp(10px, 2.3cqw, 14px);
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--gold-light);
  z-index: 2;
  padding: 1.5cqw 4cqw;
  border: 1.5px solid var(--gold);
  text-transform: uppercase;
}
.pg-cover .cover-center {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 8%;
}
.pg-cover .cover-heading {
  font-family: var(--serif);
  font-size: 14cqw !important;
  font-weight: 700;
  line-height: 1.05 !important;
  letter-spacing: -.3cqw !important;
  color: #fff !important;
  margin: 4cqw 0;
}
.pg-cover .cover-heading span {
  color: var(--gold-light);
  font-style: italic;
}
.pg-cover .cover-sub {
  font-family: var(--sans);
  font-size: clamp(12px, 2.8cqw, 18px) !important;
  color: rgba(255,255,255,.75);
  font-weight: 400;
  letter-spacing: .05cqw;
}
.pg-cover .cover-line {
  width: 20cqw;
  height: 2px;
  background: var(--gold);
  margin: 0 auto;
}
.pg-cover .cover-footer {
  position: absolute;
  bottom: 6%;
  left: 0;
  right: 0;
  z-index: 2;
  text-align: center;
  font-size: clamp(10px, 2.2cqw, 14px);
  color: rgba(255,255,255,.5);
  font-weight: 600;
  letter-spacing: 1.5px;
}
.pg-cover .cover-year {
  display: block;
  margin-top: 1cqw;
  font-family: var(--serif);
  font-size: clamp(13px, 3cqw, 18px);
  color: var(--gold);
  letter-spacing: 3px;
}

/* ─── PROSE PAGE ─── */
.pg-prose .page-content { background: var(--paper); }
.pg-prose .prose-img { height: 28%; margin-top: 1cqw; }

/* ─── MILESTONES ─── */
.pg-milestones .page-content { background: var(--paper); }
.ms-list { display: flex; flex-direction: column; gap: 2.8cqw; }
.ms-item {
  display: grid;
  grid-template-columns: 20% 1fr;
  gap: 3.5cqw;
  padding-top: 2cqw;
  border-top: 1px solid var(--line);
}
.ms-year {
  font-family: var(--serif);
  font-size: 7cqw;
  font-weight: 700;
  color: var(--burgundy);
  line-height: 1;
}
.ms-desc strong {
  font-size: clamp(12px, 2.8cqw, 18px);
  font-weight: 700;
  color: var(--burgundy-dark);
  text-transform: uppercase;
  letter-spacing: .1cqw;
}
.ms-desc p {
  font-size: clamp(13px, 2.9cqw, 19px);
  margin-top: .8cqw;
}

/* ─── HERO (full-bleed) ─── */
.pg-hero > .page-content > .hero-img {
  position: absolute;
  inset: 0;
  height: 100%;
  width: 100%;
  border-radius: 0;
}
.pg-hero .hero-img img { object-position: 50% 42%; }
.hero-overlay {
  position: absolute;
  left: 8%;
  right: 8%;
  bottom: 8%;
  z-index: 1;
  color: #fff;
  pointer-events: none;
}
.hero-overlay::before {
  content: '';
  position: absolute;
  inset: -40% -10% -20%;
  background: linear-gradient(0deg, rgba(78,19,32,.92) 0%, rgba(78,19,32,.5) 55%, transparent 100%);
  z-index: -1;
  border-radius: 0;
}
.hero-overlay h2 {
  font-size: 8.5cqw !important;
  color: #fff !important;
  margin: 1.5cqw 0 2cqw;
}
.hero-overlay h2 em { color: var(--gold-light) !important; }
.hero-overlay .pg-label-num { color: var(--gold-light); }
.hero-overlay .pg-label-text { color: rgba(255,255,255,.6); }
.hero-overlay p {
  font-size: clamp(13px, 3cqw, 20px);
  color: rgba(255,255,255,.88);
}
.pg-hero .folio { color: rgba(255,255,255,.4); }
.pg-hero .folio b { color: var(--gold-light); }
.pg-hero .zoom-hint { top: 6%; bottom: auto; right: 6%; }

/* ─── SPLIT ─── */
.pg-split .page-content { background: #f0ebe2; }
.pg-split .prose-wrap { gap: 2.2cqw; }
.pg-split .pg-photo { flex: 1; min-height: 0; }

/* ─── GRID ─── */
.pg-grid .page-content { background: var(--paper); }
.pg-grid .prose-wrap { gap: 2.5cqw; }

/* ─── DARK PAGES (teachers) ─── */
.pg-dark .page-content {
  background: var(--burgundy-dark);
  color: #f5efe5;
}
.pg-dark h2 { color: #fff !important; }
.pg-dark h2 em { color: var(--gold-light) !important; }
.pg-dark .pg-label-num { color: var(--gold-light); }
.pg-dark .pg-label-text { color: rgba(255,255,255,.5); }
.pg-dark .note-serif { color: var(--gold-light); }
.pg-dark .note-small { color: rgba(255,255,255,.5); }
.pg-dark .caption { color: rgba(255,255,255,.45); }
.pg-dark .folio { color: rgba(255,255,255,.3); }
.pg-dark .folio b { color: var(--gold-light); }
.pg-dark .divider { background: rgba(255,255,255,.2); }
.pg-dark p { color: rgba(245,239,229,.85); }

.big-quote {
  font-family: var(--serif);
  font-size: clamp(20px, 4.8cqw, 30px) !important;
  line-height: 1.4 !important;
  font-style: italic;
  color: #fff;
  padding: 0;
  border: 0;
  position: relative;
}
.big-quote::before {
  content: '"';
  display: block;
  font-size: 16cqw;
  line-height: .7;
  height: 8cqw;
  color: var(--gold);
  font-style: normal;
}

/* ─── ACCENT PAGE (celebration) ─── */
.pg-accent .page-content {
  background: linear-gradient(165deg, #f5efe5 0%, #ebe2d2 100%);
}
.pg-accent h2 { font-size: 9cqw !important; }
.giant-number {
  font-family: var(--serif);
  font-size: 32cqw;
  font-weight: 700;
  font-style: italic;
  line-height: .85;
  letter-spacing: -2cqw;
  color: var(--burgundy);
  opacity: .15;
  margin: 0 0 1cqw;
}

/* ─── FILMSTRIP ─── */
.pg-filmstrip {
  flex: 1;
  min-height: 0;
}
.pg-filmstrip .pg-mosaic .pg-photo:nth-child(odd) { transform: rotate(-1.5deg); }
.pg-filmstrip .pg-mosaic .pg-photo:nth-child(even) { transform: rotate(1.2deg); }

/* ─── BACK COVER ─── */
.pg-back .page-content {
  background: var(--burgundy-dark);
  color: #fff;
}
.back-inner {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3cqw;
  text-align: center;
  padding: 8%;
}
.back-logo-ring {
  width: 16cqw;
  height: 16cqw;
  border-radius: 50%;
  border: 2px solid var(--gold);
  padding: 1.5cqw;
  display: flex;
  align-items: center;
  justify-content: center;
}
.back-logo {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 50%;
}
.back-school {
  font-family: var(--serif);
  font-size: 5cqw;
  font-weight: 700;
  letter-spacing: .8cqw;
  color: #fff;
}
.back-years {
  font-family: var(--serif);
  font-size: 3.5cqw;
  letter-spacing: 2cqw;
  color: var(--gold);
}
.back-addr {
  font-size: clamp(11px, 2.4cqw, 15px) !important;
  color: rgba(255,255,255,.5);
}
.back-web {
  font-size: clamp(12px, 2.6cqw, 16px) !important;
  color: var(--gold-light);
  font-weight: 600;
}
.back-photo {
  width: 60%;
  height: 18%;
  border-radius: 3px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0,0,0,.4);
}
.back-photo img { filter: saturate(.7) brightness(.9); }
.back-tagline {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(12px, 2.6cqw, 16px) !important;
  color: rgba(255,255,255,.35);
}

/* ─── TOC DIALOG ─── */
.toc-dialog {
  border: 0;
  border-radius: 12px;
  background: var(--paper);
  width: 88vw;
  max-width: 700px;
  max-height: 82vh;
  padding: 0;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(44,26,14,.4);
}
.toc-dialog::backdrop { background: rgba(44,26,14,.6); backdrop-filter: blur(5px); }
.toc-head {
  padding: 18px 24px;
  background: var(--burgundy-dark);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.toc-head h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 600;
  color: #fff !important;
}
.toc-head button { color: rgba(255,255,255,.6); }
.toc-head button:hover { color: #fff; }
.toc-body {
  padding: 16px 20px;
  overflow-y: auto;
  max-height: calc(82vh - 60px);
}
.toc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 8px;
}
.toc-entry {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid transparent;
  background: rgba(107,29,42,.04);
  text-align: left;
  transition: all .15s;
}
.toc-entry:hover {
  border-color: var(--burgundy-light);
  background: rgba(107,29,42,.1);
}
.toc-entry-num {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 14px;
  color: var(--burgundy);
  width: 26px;
  flex-shrink: 0;
}
.toc-entry-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ─── PHOTO DIALOG ─── */
.lightbox {
  border: 0;
  border-radius: 10px;
  background: #1a130c;
  padding: 44px 12px 12px;
  width: max-content;
  max-width: 96vw;
  max-height: 96dvh;
  color: #f0e8dc;
  box-shadow: 0 24px 80px rgba(0,0,0,.6);
}
.lightbox::backdrop { background: rgba(44,26,14,.75); backdrop-filter: blur(6px); }
.lightbox figure { margin: 0; }
.lightbox img {
  display: block;
  max-width: 90vw;
  max-height: calc(90dvh - 80px);
  width: auto;
  height: auto;
  object-fit: contain;
  margin: auto;
  border-radius: 3px;
}
.lightbox figcaption {
  text-align: center;
  font-size: 13px;
  line-height: 1.7;
  padding: 12px 8px 4px;
  color: rgba(240,232,220,.7);
}
.lightbox-close {
  position: absolute;
  right: 8px;
  top: 8px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: rgba(255,255,255,.6);
  background: rgba(255,255,255,.08);
  font-size: 18px;
}
.lightbox-close:hover { background: rgba(255,255,255,.18); color: #fff; }

#reader-error {
  font-size: 13px;
  text-align: center;
  line-height: 1.8;
  color: var(--muted);
  padding: 24px;
}

/* ─── RESPONSIVE ─── */
@media (max-width: 760px) {
  .topbar { padding: 0 12px; gap: 10px; }
  .topbar-logo { width: 34px; height: 34px; }
  .topbar-title h1 { font-size: 13px; }
  .topbar-title .topbar-sub { font-size: 10px; letter-spacing: 1px; }
  .book-stage { padding: 0 4px; }
  .book-mount { max-width: 460px; }
  .bottom-nav { height: 54px; }
  .nav-btn { width: 44px; height: 44px; }
  .pg-photo .zoom-hint { opacity: .7; }
  .toc-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; }
}

@media print {
  @page { size: A4 portrait; margin: 0; }
  body { background: #fff; overflow: visible; height: auto; }
  .topbar, .bottom-nav, #progress-bar { display: none !important; }
  .reader { overflow: visible; }
  .book-stage { display: none !important; }
  #print-root { display: block !important; }
  #print-root .page {
    display: block !important;
    width: 210mm !important;
    height: 280mm !important;
    break-after: page;
    box-shadow: none;
    position: relative !important;
    transform: none !important;
  }
  #print-root .page:last-child { break-after: auto; }
  #print-root .zoom-hint { display: none; }
  * { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}