:root {
  --paper: #f7f1e5;
  --ink: #211711;
  --muted: rgba(41, 25, 15, 0.7);
  --book-shadow: 0 3.5rem 5rem rgba(17, 11, 8, 0.42);
  --page-radius: 28px;
  --page-gap: clamp(0.9rem, 1vw, 1.5rem);
  --transition-slow: 900ms cubic-bezier(0.2, 0.9, 0.2, 1);
  --transition-mid: 520ms cubic-bezier(0.22, 1, 0.36, 1);
  --font-display: "Palatino Linotype", "Book Antiqua", Palatino, serif;
  --font-body: Georgia, "Times New Roman", serif;
  --font-sans: "Trebuchet MS", "Segoe UI", sans-serif;
  --left-page-opacity: 1;
  --book-max-width: min(1500px, calc(100vw - 2rem));
  --book-height: clamp(520px, calc(100vh - 11.2rem), 880px);
  --stage-gap: clamp(0.45rem, 0.9vh, 0.8rem);
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at 20% 20%, rgba(219, 199, 147, 0.3), transparent 35%),
    radial-gradient(circle at 80% 16%, rgba(142, 101, 72, 0.26), transparent 28%),
    radial-gradient(circle at 50% 80%, rgba(99, 67, 44, 0.4), transparent 40%),
    linear-gradient(145deg, #150f0b 0%, #2a1a15 38%, #5a3725 100%);
  color: var(--ink);
  font-family: var(--font-body);
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

::selection { background: transparent; }

body::before,
body::after {
  content: "";
  position: fixed;
  inset: -12vmax;
  pointer-events: none;
  opacity: 0.5;
}

body::before {
  background:
    conic-gradient(from 90deg at 30% 50%, transparent 0deg, rgba(255, 233, 173, 0.16) 70deg, transparent 130deg),
    radial-gradient(circle at 50% 50%, rgba(255, 233, 188, 0.1), transparent 52%);
  mix-blend-mode: screen;
  animation: drift 20s ease-in-out infinite alternate;
}

body::after {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(circle at center, black 40%, transparent 75%);
}

@keyframes drift {
  from { transform: translate3d(-2%, 0, 0) scale(1); }
  to { transform: translate3d(2%, -1%, 0) scale(1.08); }
}

.app {
  position: relative;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1rem;
  perspective: 2400px;
}

.stage {
  position: relative;
  width: var(--book-max-width);
  height: auto;
  display: grid;
  grid-template-rows: auto var(--book-height) auto;
  gap: var(--stage-gap);
  align-items: center;
  justify-items: center;
}

.narration {
  position: relative;
  z-index: 7;
  width: min(100%, 1380px);
  margin: 0;
  padding: 0 clamp(1rem, 4vw, 4.2rem);
  color: rgba(255, 239, 211, 0.94);
  font-family: var(--font-sans);
  font-size: clamp(0.78rem, 1vw, 1.02rem);
  line-height: 1.45;
  letter-spacing: 0.08em;
  text-align: center;
  text-transform: uppercase;
  text-shadow:
    0 0 0.65rem color-mix(in srgb, var(--accent, #c99363) 72%, transparent),
    0 0 2.2rem rgba(255, 231, 187, 0.34),
    0 0.5rem 1.2rem rgba(14, 8, 5, 0.34);
  text-wrap: balance;
  pointer-events: none;
}

.narration::before {
  content: "";
  position: absolute;
  inset: -0.8rem 8%;
  z-index: -1;
  opacity: 0.55;
  background:
    radial-gradient(ellipse at 50% 55%, color-mix(in srgb, var(--accent, #c99363) 28%, transparent), transparent 62%),
    linear-gradient(90deg, transparent, rgba(255, 247, 232, 0.12), transparent);
  filter: blur(12px);
  animation: narrationMist 8s ease-in-out infinite alternate;
}

.narration-word {
  display: inline-block;
  transform: translate3d(0, 0, 0);
  animation: narrationWave 5.8s ease-in-out infinite;
  animation-delay: calc(var(--word-index) * 70ms);
  will-change: transform, opacity, filter;
}

@keyframes narrationWave {
  0%,
  100% {
    opacity: 0.72;
    filter: blur(0.12px);
    transform: translate3d(0, 0.08rem, 0);
  }

  48% {
    opacity: 1;
    filter: blur(0);
    transform: translate3d(0, -0.22rem, 0);
  }
}

@keyframes narrationMist {
  from { transform: translateX(-1.8%) scaleX(0.98); }
  to { transform: translateX(1.8%) scaleX(1.03); }
}

@keyframes memorialGold {
  0%,
  100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

@keyframes artSpotlight {
  0% {
    opacity: 0.58;
    transform: translate3d(-9%, -5%, 0) scale(1);
  }

  35% {
    opacity: 0.72;
    transform: translate3d(8%, -8%, 0) scale(1.06);
  }

  70% {
    opacity: 0.64;
    transform: translate3d(5%, 7%, 0) scale(1.03);
  }

  100% {
    opacity: 0.58;
    transform: translate3d(-9%, -5%, 0) scale(1);
  }
}

.aura {
  position: absolute;
  inset: 4%;
  border-radius: 40px;
  filter: blur(16px);
  background:
    radial-gradient(circle at 30% 20%, color-mix(in srgb, var(--accent, #d7a97d) 38%, transparent), transparent 34%),
    radial-gradient(circle at 70% 70%, color-mix(in srgb, var(--accent-2, #8b6f53) 26%, transparent), transparent 32%);
  transform: translateZ(-120px) scale(1.03);
  transition: background var(--transition-mid), opacity var(--transition-mid);
}

.book {
  position: relative;
  width: min(100%, 1380px);
  height: 100%;
  transform-style: preserve-3d;
  filter: drop-shadow(var(--book-shadow));
}

.book-shell {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  transition: transform var(--transition-slow);
  transform: rotateX(4deg) rotateY(-8deg);
}

.book.is-open .book-shell { transform: rotateX(1deg) rotateY(0deg); }

.cover {
  position: absolute;
  inset: 2.5% 49.7% 2.5% 0;
  border-radius: 28px 8px 8px 28px;
  transform-origin: right center;
  transform-style: preserve-3d;
  background:
    linear-gradient(180deg, rgba(16, 12, 10, 0.16), rgba(16, 12, 10, 0.55)),
    linear-gradient(135deg, rgba(251, 226, 180, 0.18), transparent 38%),
    url("images/cover.webp") center/cover no-repeat;
  box-shadow:
    inset -1px 0 0 rgba(255, 240, 205, 0.4),
    inset 0 0 0 1px rgba(255, 232, 194, 0.1),
    0 2rem 3rem rgba(10, 6, 5, 0.3);
  overflow: hidden;
  transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.book.is-open .cover { transform: rotateY(-164deg) translateZ(8px); }

.cover::before,
.cover::after {
  content: "";
  position: absolute;
  inset: 0;
}

.cover::before {
  background:
    linear-gradient(180deg, rgba(255, 250, 238, 0.06), transparent 20%, rgba(0, 0, 0, 0.32) 100%),
    linear-gradient(90deg, rgba(253, 228, 180, 0.3), transparent 18%, rgba(0, 0, 0, 0.25) 95%);
  mix-blend-mode: screen;
}

.cover::after {
  background: linear-gradient(90deg, rgba(25, 14, 8, 0.85), transparent 20%);
  opacity: 0.66;
}

.cover-title {
  position: absolute;
  inset: auto 10% 12% 10%;
  color: #ffefcf;
  text-shadow: 0 0 24px rgba(255, 208, 137, 0.24);
  font-family: var(--font-display);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-align: center;
  font-size: clamp(1.2rem, 1.5vw, 1.8rem);
  z-index: 1;
}

.spine {
  position: absolute;
  left: 49.1%;
  top: 3%;
  bottom: 3%;
  width: min(44px, 4vw);
  border-radius: 12px;
  background:
    linear-gradient(90deg, rgba(26, 14, 11, 0.92), rgba(78, 49, 29, 0.82), rgba(26, 14, 11, 0.95)),
    url("images/spine.png") center/cover no-repeat;
  box-shadow:
    inset 0 0 0 1px rgba(247, 228, 194, 0.12),
    0 0 18px rgba(0, 0, 0, 0.28);
  transform: translateZ(-2px);
  z-index: 1;
}

.spread {
  position: absolute;
  inset: 2.5%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--page-gap);
  z-index: 2;
  transform: translateZ(18px);
}

.page {
  position: relative;
  border-radius: var(--page-radius);
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(255, 252, 246, 0.94), rgba(239, 231, 216, 0.96)),
    var(--paper);
  box-shadow:
    inset 0 0 0 1px rgba(91, 64, 43, 0.12),
    inset 0 0 80px rgba(128, 95, 58, 0.08),
    0 1.5rem 2.4rem rgba(72, 41, 21, 0.12);
}

.page::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 24% 20%, rgba(255, 255, 255, 0.72), transparent 24%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.55), transparent 12%, transparent 84%, rgba(120, 81, 49, 0.06));
  pointer-events: none;
}

.page.left {
  opacity: var(--left-page-opacity);
  transition: opacity var(--transition-mid), transform var(--transition-mid);
}

.page.right { isolation: isolate; }

.left-page-inner,
.right-page-inner {
  position: absolute;
  inset: 0;
  display: grid;
  padding: clamp(1rem, 1.3vw, 1.45rem);
}

.left-page-inner {
  grid-template-rows: minmax(0, 1fr);
}

.page.left.is-cover-inside .left-page-inner {
  grid-template-rows: minmax(0, 1fr);
}

.page.left.is-cover-inside .art-frame,
.page.left.is-cover-inside .art-caption {
  display: none;
}

.cover-inside-page {
  position: relative;
  min-height: 0;
  height: 100%;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  gap: clamp(0.75rem, 1.15vw, 1rem);
  padding: clamp(0.2rem, 0.5vw, 0.45rem);
  color: color-mix(in srgb, var(--accent-deep, #5c3226) 58%, #211711);
}

.cover-inside-page::before {
  content: "";
  position: absolute;
  inset: 8% 6% 12%;
  pointer-events: none;
  opacity: 0.38;
  background:
    radial-gradient(circle at 42% 24%, color-mix(in srgb, var(--accent-soft, #f1d9b7) 62%, transparent), transparent 30%),
    radial-gradient(circle at 76% 78%, color-mix(in srgb, var(--accent, #c99363) 28%, transparent), transparent 36%);
  filter: blur(12px);
}

.replica-header,
.replica-footer {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--font-sans);
  color: var(--muted);
}

.replica-header {
  align-items: start;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.72rem;
}

.replica-title {
  position: relative;
  z-index: 1;
}

.replica-title h2 {
  margin: 0;
  color: var(--accent-deep, #5c3226);
  font-family: var(--font-display);
  font-size: clamp(2rem, 3vw, 3.1rem);
  line-height: 0.95;
  letter-spacing: 0.02em;
  text-wrap: balance;
}

.replica-poem-panel {
  position: relative;
  z-index: 1;
  min-height: 0;
  overflow: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  overscroll-behavior: contain;
}

.replica-poem-panel::-webkit-scrollbar {
  width: 0;
  height: 0;
}

.replica-poem-panel p {
  margin: 0;
  max-width: none;
  white-space: pre-line;
  font-family: var(--font-body);
  font-size: var(--poem-size, clamp(0.86rem, 0.95vw, 1rem));
  line-height: var(--poem-leading, 1.34);
  text-wrap: pretty;
}

.replica-poem-panel p::first-letter {
  float: left;
  font-size: var(--dropcap-size, 2.75em);
  line-height: 0.82;
  padding-right: 0.12em;
  padding-top: 0.08em;
  color: var(--accent);
  font-family: var(--font-display);
}

.replica-footer {
  align-items: center;
  font-size: 0.8rem;
  border-top: 1px solid rgba(90, 58, 31, 0.12);
  padding-top: 0.8rem;
}

.art-frame {
  position: relative;
  min-height: 0;
  border-radius: calc(var(--page-radius) - 14px);
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 42%, color-mix(in srgb, var(--accent-soft, #f1d9b7) 38%, transparent), transparent 50%),
    linear-gradient(180deg, rgba(255, 250, 240, 0.06), rgba(16, 10, 7, 0.18));
  box-shadow:
    inset 0 0 0 1px rgba(255, 238, 210, 0.06),
    inset 0 0 2.2rem rgba(247, 241, 229, 0.34),
    0 1rem 1.8rem rgba(42, 22, 10, 0.12);
}

.art-frame img,
.art-frame .art-fallback {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.art-frame img {
  object-fit: cover;
  object-position: center;
  filter: saturate(1.05) contrast(1.04) brightness(0.93);
  transform: none;
  transition: transform 1200ms ease, filter 700ms ease;
}

.book:hover .art-frame img {
  transform: none;
  filter: saturate(1.1) contrast(1.06) brightness(0.95);
}

.art-frame::before,
.art-frame::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.art-frame::before {
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(247, 241, 229, 0.16), transparent 7%, transparent 93%, rgba(247, 241, 229, 0.16)),
    linear-gradient(180deg, rgba(247, 241, 229, 0.14), transparent 7%, transparent 93%, rgba(247, 241, 229, 0.12));
  box-shadow:
    inset 0 0 0.8rem rgba(247, 241, 229, 0.28),
    inset 0 0 2rem rgba(47, 28, 16, 0.16);
}

.art-frame::after {
  inset: -12%;
  z-index: 2;
  background:
    radial-gradient(ellipse at 46% 30%, rgba(255, 246, 219, 0.38), rgba(255, 218, 154, 0.14) 20%, transparent 45%),
    radial-gradient(ellipse at 62% 70%, color-mix(in srgb, var(--accent, #c99363) 16%, transparent), transparent 52%);
  mix-blend-mode: screen;
  filter: blur(0.4px);
  animation: artSpotlight 16s ease-in-out infinite;
}

.art-caption {
  display: none;
  justify-content: space-between;
  gap: 0.8rem;
  align-items: center;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.art-caption strong {
  color: color-mix(in srgb, var(--accent-deep, #5c3226) 82%, black);
  font-size: 0.84rem;
}

.chapter-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 0.8rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent, #c99363) 16%, white);
  box-shadow: inset 0 0 0 1px rgba(92, 50, 38, 0.08);
  white-space: nowrap;
}

.chapter-chip::before {
  content: "";
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--accent, #c99363), var(--accent-deep, #5c3226));
  box-shadow: 0 0 12px color-mix(in srgb, var(--accent, #c99363) 48%, transparent);
}

.right-page-inner {
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  gap: 1rem;
}

.header-row {
  display: flex;
  justify-content: flex-end;
  align-items: start;
  gap: 1rem;
  font-family: var(--font-sans);
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.72rem;
}

.page-number {
  min-width: 5ch;
  text-align: right;
}

#chapterType {
  display: none;
}

.title-block h1 {
  margin: 0;
  color: var(--accent-deep, #5c3226);
  font-family: var(--title-font, var(--font-display));
  font-size: clamp(2rem, 3vw, 3.2rem);
  line-height: 0.95;
  letter-spacing: 0.02em;
  text-wrap: balance;
}

.page.right.is-memorial .title-block h1,
.memorial-name-line {
  color: #b77a24;
  background: linear-gradient(100deg, #7a4a16 0%, #dba94e 22%, #fff0b8 45%, #b77720 68%, #f6cf6b 100%);
  background-size: 220% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow:
    0 0 0.45rem rgba(244, 191, 86, 0.42),
    0 0.08rem 0.18rem rgba(72, 42, 12, 0.2);
  animation: memorialGold 7s ease-in-out infinite;
}

.page.right.is-memorial .title-block h1 {
  font-family: var(--font-display);
  font-style: italic;
  letter-spacing: 0.035em;
}

.title-block p {
  margin: 0.35rem 0 0;
  max-width: 42ch;
  color: var(--muted);
  font-family: var(--meta-font, var(--font-sans));
  font-size: 0.96rem;
  line-height: 1.5;
}

.poem-panel {
  position: relative;
  min-height: 0;
  overflow: hidden;
  padding-right: 0;
  scrollbar-width: none;
  -ms-overflow-style: none;
  overscroll-behavior: contain;
}

.poem-panel::-webkit-scrollbar {
  width: 0;
  height: 0;
}

.reading-magnifier {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 90;
  width: clamp(8.75rem, 14vw, 12rem);
  height: clamp(8.75rem, 14vw, 12rem);
  pointer-events: none;
  opacity: 0;
  transform: translate3d(-200vw, -200vh, 0);
  transition: opacity 140ms ease;
  overflow: visible;
  filter: drop-shadow(0 0.8rem 1.25rem rgba(18, 10, 6, 0.34));
}

.reading-magnifier-lens {
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid rgba(255, 238, 190, 0.72);
  background:
    radial-gradient(circle at 35% 26%, rgba(255, 255, 255, 0.42), transparent 88%),
    linear-gradient(145deg, rgba(255, 248, 229, 0.72), rgba(246, 221, 170, 0.88));
  box-shadow:
    0 0 0 0.25rem rgba(91, 55, 24, 0.2),
    inset 0 0 1.1rem rgba(255, 255, 255, 0.48),
    inset 0 -0.8rem 1.5rem rgba(125, 78, 37, 0.16),
    0 0 1.6rem color-mix(in srgb, var(--accent, #c99363) 44%, transparent);
  backdrop-filter: blur(1.5px) saturate(1.18);
}

.reading-magnifier.is-visible {
  opacity: 1;
}

.reading-magnifier-lens::before,
.reading-magnifier-lens::after,
.reading-magnifier::before,
.reading-magnifier::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.reading-magnifier-lens::before {
  inset: 0.44rem;
  z-index: 2;
  border-radius: 50%;
  border: 1px solid rgba(255, 249, 226, 0.68);
  background:
    radial-gradient(circle at 26% 18%, rgba(255, 255, 255, 0.5), transparent 12%),
    radial-gradient(circle at 72% 78%, color-mix(in srgb, var(--accent, #c99363) 16%, transparent), transparent 25%);
  mix-blend-mode: screen;
}

.reading-magnifier-lens::after {
  inset: 0;
  z-index: 3;
  border-radius: inherit;
  background:
    radial-gradient(circle at 30% 22%, rgba(255, 255, 255, 0.54) 0 0.16rem, transparent 0.18rem),
    radial-gradient(circle at 68% 28%, color-mix(in srgb, var(--accent, #c99363) 74%, white) 0 0.11rem, transparent 0.13rem),
    radial-gradient(circle at 76% 68%, rgba(255, 249, 220, 0.7) 0 0.13rem, transparent 0.15rem);
  opacity: 0.58;
  animation: magnifierGleam 4.8s ease-in-out infinite;
}

.reading-magnifier::after {
  z-index: 0;
  left: 87.5%;
  top: 87.5%;
  width: clamp(3.35rem, 5vw, 4.15rem);
  height: 0.72rem;
  border-radius: 999px;
  background: linear-gradient(90deg, #f0cb79 0%, #9b5d2b 28%, #f1cf82 54%, #6b3c21 100%);
  box-shadow: 0 0.35rem 0.8rem rgba(20, 11, 6, 0.32);
  transform: translateY(-50%) rotate(45deg);
  transform-origin: 0.3rem 50%;
}

@keyframes magnifierGleam {
  0%,
  100% { transform: translate3d(-0.08rem, 0.04rem, 0); opacity: 0.42; }
  50% { transform: translate3d(0.08rem, -0.06rem, 0); opacity: 0.72; }
}

.reading-magnifier-text {
  position: absolute;
  z-index: 1;
  margin: 0;
  white-space: pre-line;
  transform-origin: top left;
  text-wrap: pretty;
}

.reading-magnifier-text.dropcap::first-letter {
  float: left;
}

.book.is-reading .hotzone {
  cursor: none;
}

.poem {
  margin: 0;
  white-space: pre-line;
  font-family: var(--poem-font, var(--font-body));
  font-size: var(--poem-size, clamp(0.86rem, 0.95vw, 1rem));
  line-height: var(--poem-leading, 1.34);
  color: color-mix(in srgb, var(--accent-deep, #5c3226) 54%, #211711);
  padding: 0;
  max-width: none;
  text-wrap: pretty;
}

.poem.dropcap::first-letter {
  float: left;
  font-size: var(--dropcap-size, 2.75em);
  line-height: 0.82;
  padding-right: 0.12em;
  padding-top: 0.08em;
  color: var(--accent);
  font-family: var(--title-font, var(--font-display));
}

.page.right.is-guide .right-page-inner {
  gap: clamp(0.55rem, 1.1vh, 0.9rem);
}

.page.right.is-guide .title-block h1 {
  font-size: clamp(1.8rem, 2.75vw, 2.85rem);
}

.page.right.is-guide .title-block p {
  max-width: 58ch;
  font-size: clamp(0.82rem, 0.95vw, 0.94rem);
  line-height: 1.38;
}

.page.right.is-guide .poem-panel {
  overflow: hidden;
  padding-right: 0;
}

.page.right.is-guide .poem {
  max-width: none;
  column-count: 2;
  column-gap: clamp(1rem, 2vw, 1.8rem);
  column-fill: balance;
  font-family: var(--font-body);
  font-size: var(--poem-size, clamp(0.64rem, 0.76vw, 0.82rem));
  line-height: var(--poem-leading, 1.18);
  white-space: pre-wrap;
}

.poem-line {
  white-space: pre-wrap;
}

.memorial-name-line {
  display: inline-block;
  position: relative;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 700;
  letter-spacing: 0.015em;
}

.footer-row {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
  align-items: center;
  font-family: var(--font-sans);
  color: var(--muted);
  font-size: 0.8rem;
  border-top: 1px solid rgba(90, 58, 31, 0.12);
  padding-top: 0.8rem;
}

.mood-line {
  display: none;
  align-items: center;
  gap: 0.6rem;
  min-width: 0;
}

.mood-line::before {
  content: "";
  width: 2.4rem;
  height: 1px;
  background: linear-gradient(90deg, var(--accent, #c99363), transparent);
}

.controls {
  position: relative;
  left: auto;
  right: auto;
  bottom: auto;
  width: min(100%, 1180px);
  display: grid;
  grid-template-columns: auto minmax(12rem, 1fr) minmax(8.5rem, 11rem) auto;
  gap: 1rem;
  align-items: center;
  align-self: start;
  z-index: 6;
  pointer-events: auto;
}

.nav-group,
.utility-group {
  display: inline-flex;
  gap: 0.75rem;
  pointer-events: auto;
}

.utility-group {
  position: relative;
  justify-content: flex-end;
}

button,
select,
input[type="range"] { font: inherit; }

.control-btn,
.chapter-menu-button,
.volume-control {
  border: 0;
  border-radius: 999px;
  background: rgba(255, 248, 236, 0.84);
  color: #28170f;
  box-shadow:
    0 0.6rem 1.4rem rgba(11, 8, 7, 0.18),
    inset 0 0 0 1px rgba(107, 70, 42, 0.14);
  backdrop-filter: blur(12px);
}

.control-btn {
  min-width: 3.2rem;
  min-height: 3.2rem;
  padding: 0 1rem;
  display: inline-grid;
  place-items: center;
  cursor: pointer;
  transition: transform 160ms ease, background 240ms ease, box-shadow 240ms ease;
}

.control-btn:hover,
.control-btn:focus-visible,
.chapter-menu-button:hover,
.chapter-menu-button:focus-visible,
.volume-control:focus-within {
  transform: translateY(-2px);
  background: rgba(255, 251, 243, 0.95);
  box-shadow:
    0 0.9rem 1.8rem rgba(11, 8, 7, 0.24),
    inset 0 0 0 1px rgba(107, 70, 42, 0.18);
  outline: none;
}

.chapter-menu {
  position: relative;
  width: clamp(11rem, 18vw, 15rem);
  min-width: 0;
}

.chapter-menu-button {
  padding: 0.95rem 1rem;
  width: 100%;
  min-height: 3.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1;
  text-align: left;
}

#chapterMenuLabel {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chapter-menu-caret {
  flex: 0 0 auto;
  width: 0.55rem;
  height: 0.55rem;
  border-right: 2px solid color-mix(in srgb, var(--accent-deep, #5c3226) 78%, black);
  border-bottom: 2px solid color-mix(in srgb, var(--accent-deep, #5c3226) 78%, black);
  transform: translateY(-0.12rem) rotate(45deg);
  transition: transform 180ms ease;
}

.chapter-menu.is-open .chapter-menu-caret {
  transform: translateY(0.12rem) rotate(225deg);
}

.chapter-options {
  position: absolute;
  right: 0;
  bottom: calc(100% + 0.65rem);
  z-index: 30;
  width: max(100%, min(28rem, 72vw));
  max-height: min(54vh, 28rem);
  padding: 0.45rem;
  overflow: auto;
  border: 1px solid rgba(92, 50, 38, 0.2);
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(255, 252, 246, 0.96), rgba(240, 230, 211, 0.96)),
    var(--paper);
  box-shadow:
    0 1.1rem 2.4rem rgba(18, 10, 6, 0.32),
    inset 0 0 0 1px rgba(255, 247, 232, 0.65),
    inset 0 0 2rem rgba(201, 147, 91, 0.1);
  color: color-mix(in srgb, var(--accent-deep, #5c3226) 72%, #211711);
  opacity: 0;
  visibility: hidden;
  transform: translateY(0.4rem) scale(0.98);
  transform-origin: bottom right;
  transition: opacity 180ms ease, transform 180ms ease, visibility 180ms ease;
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--accent, #c99363) 70%, #6b3e29) rgba(111, 67, 34, 0.12);
}

.chapter-menu.is-open .chapter-options {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.chapter-options::-webkit-scrollbar {
  width: 0.72rem;
}

.chapter-options::-webkit-scrollbar-track {
  margin-block: 0.55rem;
  border-radius: 999px;
  background: rgba(110, 68, 35, 0.12);
}

.chapter-options::-webkit-scrollbar-thumb {
  border: 2px solid rgba(250, 242, 225, 0.92);
  border-radius: 999px;
  background:
    linear-gradient(180deg, #f2d38a, #b77725 54%, #6b3e29);
  box-shadow: inset 0 0 0 1px rgba(255, 247, 211, 0.32);
}

.chapter-option {
  display: block;
  width: 100%;
  padding: 0.55rem 0.75rem;
  border-radius: 11px;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.15;
  color: inherit;
  outline: none;
}

.chapter-option:hover,
.chapter-option:focus-visible {
  background: color-mix(in srgb, var(--accent, #c99363) 16%, white);
}

.chapter-option[aria-selected="true"] {
  color: #422414;
  background:
    linear-gradient(100deg, rgba(250, 222, 142, 0.82), rgba(179, 116, 37, 0.22)),
    color-mix(in srgb, var(--accent, #c99363) 20%, white);
  box-shadow:
    inset 0 0 0 1px rgba(131, 78, 31, 0.18),
    0 0.35rem 1rem rgba(177, 117, 44, 0.16);
}

.timeline {
  pointer-events: auto;
  display: grid;
  gap: 0.45rem;
  padding: 0.8rem 1rem;
  border-radius: 999px;
  background: rgba(255, 247, 233, 0.66);
  box-shadow:
    0 0.8rem 1.6rem rgba(15, 10, 8, 0.16),
    inset 0 0 0 1px rgba(107, 70, 42, 0.08);
  backdrop-filter: blur(12px);
}

.volume-control {
  pointer-events: auto;
  min-height: 3.25rem;
  display: flex;
  align-items: center;
  gap: 0.62rem;
  padding: 0.72rem 0.95rem 0.72rem 0.72rem;
  transition: transform 160ms ease, background 240ms ease, box-shadow 240ms ease;
}

.mute-button {
  width: 1.9rem;
  height: 1.9rem;
  padding: 0;
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: color-mix(in srgb, var(--accent-deep, #5c3226) 82%, black);
  cursor: pointer;
  transition: background 180ms ease, color 180ms ease, transform 160ms ease;
}

.mute-button:hover,
.mute-button:focus-visible {
  background: color-mix(in srgb, var(--accent, #c99363) 18%, transparent);
  color: color-mix(in srgb, var(--accent-deep, #5c3226) 94%, black);
  outline: none;
  transform: translateY(-1px);
}

.volume-icon {
  display: block;
  width: 1.34rem;
  height: 1.34rem;
  overflow: visible;
}

.volume-icon-body {
  fill: currentColor;
}

.volume-icon-wave,
.volume-icon-slash {
  fill: none;
  stroke: currentColor;
  stroke-width: 2.25;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
  transition: opacity 160ms ease;
}

.volume-icon-wave {
  opacity: 0.74;
}

.volume-icon-slash {
  opacity: 0;
}

.mute-button.is-muted .volume-icon-wave {
  opacity: 0;
}

.mute-button.is-muted .volume-icon-slash {
  opacity: 0.98;
}

.volume-control input[type="range"] {
  width: 100%;
  min-width: 0;
  cursor: pointer;
  accent-color: var(--accent, #c99363);
}

.timeline-top {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--font-sans);
  color: #43271b;
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.timeline input[type="range"] {
  width: 100%;
  cursor: pointer;
  accent-color: var(--accent, #c99363);
}

.timeline input[type="range"]::-webkit-slider-runnable-track,
.volume-control input[type="range"]::-webkit-slider-runnable-track {
  height: 0.44rem;
  border-radius: 999px;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--accent, #c99363) 62%, #f6deb2), rgba(99, 59, 31, 0.16));
  box-shadow: inset 0 0 0 1px rgba(92, 50, 38, 0.1);
}

.timeline input[type="range"]::-webkit-slider-thumb,
.volume-control input[type="range"]::-webkit-slider-thumb {
  width: 1rem;
  height: 1rem;
  margin-top: -0.29rem;
  border: 2px solid #fff4d8;
  border-radius: 999px;
  background: linear-gradient(180deg, #f6d67b, #9d6127);
  box-shadow: 0 0.18rem 0.55rem rgba(68, 38, 16, 0.28);
}

.timeline input[type="range"]::-moz-range-track,
.volume-control input[type="range"]::-moz-range-track {
  height: 0.44rem;
  border-radius: 999px;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--accent, #c99363) 62%, #f6deb2), rgba(99, 59, 31, 0.16));
  box-shadow: inset 0 0 0 1px rgba(92, 50, 38, 0.1);
}

.timeline input[type="range"]::-moz-range-thumb,
.volume-control input[type="range"]::-moz-range-thumb {
  width: 0.9rem;
  height: 0.9rem;
  border: 2px solid #fff4d8;
  border-radius: 999px;
  background: linear-gradient(180deg, #f6d67b, #9d6127);
  box-shadow: 0 0.18rem 0.55rem rgba(68, 38, 16, 0.28);
}

.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;
}

.hotzones {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: 18% 64% 18%;
  z-index: 5;
}

.hotzone { cursor: pointer; }
.hotzone.center { cursor: default; }

.font-class-serene {
  --title-font: "Palatino Linotype", "Book Antiqua", Palatino, serif;
  --poem-font: Georgia, "Times New Roman", serif;
  --meta-font: "Trebuchet MS", "Segoe UI", sans-serif;
}

.font-class-vow {
  --title-font: Baskerville, "Palatino Linotype", serif;
  --poem-font: Garamond, "Palatino Linotype", serif;
  --meta-font: "Segoe UI", sans-serif;
}

.font-class-modern {
  --title-font: "Trebuchet MS", "Gill Sans", sans-serif;
  --poem-font: "Palatino Linotype", Georgia, serif;
  --meta-font: "Trebuchet MS", sans-serif;
}

.font-class-scripted {
  --title-font: "Segoe Print", "Bradley Hand", cursive;
  --poem-font: Georgia, serif;
  --meta-font: "Trebuchet MS", sans-serif;
}

.font-class-sturdy {
  --title-font: "Book Antiqua", Georgia, serif;
  --poem-font: "Times New Roman", Georgia, serif;
  --meta-font: Verdana, sans-serif;
}

.font-class-bright {
  --title-font: "Gill Sans", "Trebuchet MS", sans-serif;
  --poem-font: Cambria, Georgia, serif;
  --meta-font: "Trebuchet MS", sans-serif;
}

@media (max-width: 1100px) {
  :root { --book-height: clamp(500px, calc(100vh - 11.8rem), 920px); }
  .book-shell,
  .book.is-open .book-shell { transform: none; }
  .cover,
  .spine { display: none; }
  .spread { grid-template-columns: 0.92fr 1.08fr; }
  .poem { max-width: 42ch; }
}

@media (max-width: 980px) {
  :root {
    --book-max-width: min(100vw - 0.6rem, 740px);
    --book-height: clamp(330px, calc(100svh - 14.2rem), 780px);
    --left-page-opacity: 1;
  }

  .reading-magnifier { display: none; }

  .app { padding: 0.3rem; }

  .stage {
    grid-template-rows: auto var(--book-height) auto;
    gap: clamp(0.35rem, 0.8vh, 0.65rem);
  }

  .narration {
    padding-inline: 0.7rem;
    font-size: clamp(0.66rem, 2.6vw, 0.82rem);
    line-height: 1.32;
    letter-spacing: 0.055em;
  }

  .book {
    width: 100%;
    filter: drop-shadow(0 1.4rem 2rem rgba(17, 11, 8, 0.36));
  }

  .spread {
    inset: 1.6%;
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
    gap: 0;
    transform: none;
  }

  .page {
    grid-area: 1 / 1;
    border-radius: 24px;
  }

  .page.left,
  .page.right {
    opacity: 1;
    transform: none;
  }

  .book.is-single-page.mobile-show-art .page.right,
  .book.is-single-page.mobile-show-text .page.left {
    display: none;
  }

  .left-page-inner,
  .right-page-inner {
    padding: clamp(0.85rem, 3.6vw, 1.15rem);
  }

  .art-frame {
    border-radius: 18px;
  }

  .right-page-inner { padding-top: 1rem; }
  .header-row { font-size: clamp(0.6rem, 2.2vw, 0.72rem); }
  .title-block h1 { font-size: clamp(1.65rem, 8.5vw, 2.55rem); }
  .poem {
    font-size: var(--poem-size, 1rem);
    line-height: var(--poem-leading, 1.48);
    max-width: 100%;
  }

  .replica-header,
  .replica-footer,
  .footer-row {
    font-size: clamp(0.66rem, 2.3vw, 0.8rem);
  }

  .controls {
    grid-template-columns: 1fr;
    gap: 0.62rem;
    bottom: auto;
    width: min(100%, 28rem);
  }

  .nav-group,
  .utility-group,
  .timeline,
  .volume-control { justify-content: center; }

  .timeline { order: -1; border-radius: 22px; }
  .timeline {
    padding: 0.65rem 0.85rem;
    gap: 0.34rem;
  }

  .control-btn {
    min-width: 2.8rem;
    min-height: 2.8rem;
  }

  .chapter-menu-button {
    min-height: 2.9rem;
    padding: 0.78rem 0.95rem;
  }

  .volume-control {
    width: min(82vw, 18rem);
    justify-self: center;
  }

  .chapter-menu {
    width: min(70vw, 15rem);
    min-width: 0;
  }

  .chapter-options {
    left: 50%;
    right: auto;
    width: min(92vw, 420px);
    max-height: min(46vh, 26rem);
    transform-origin: bottom center;
    transform: translate(-50%, 0.4rem) scale(0.98);
  }

  .chapter-menu.is-open .chapter-options {
    transform: translate(-50%, 0) scale(1);
  }
  .hotzones { grid-template-columns: 24% 52% 24%; }
  .page.right.is-guide .poem-panel { overflow: hidden; }
  .page.right.is-guide .poem {
    column-gap: 0.8rem;
    font-size: var(--poem-size, clamp(0.62rem, 2.4vw, 0.82rem));
    line-height: var(--poem-leading, 1.26);
  }
}

@media (max-width: 980px) and (orientation: landscape) {
  :root {
    --book-max-width: min(100vw - 1rem, 780px);
    --book-height: clamp(300px, calc(100svh - 6.4rem), 540px);
  }

  .stage {
    gap: 0.35rem;
  }

  .narration {
    font-size: clamp(0.58rem, 1.4vw, 0.7rem);
    line-height: 1.2;
  }

  .left-page-inner,
  .right-page-inner {
    gap: 0.42rem;
    padding: clamp(0.58rem, 1.8vw, 0.85rem);
  }

  .title-block h1 {
    font-size: clamp(1.25rem, 4.8vw, 2rem);
  }

  .poem {
    line-height: var(--poem-leading, 1.24);
  }

  .footer-row {
    padding-top: 0.42rem;
  }

  .controls {
    grid-template-columns: auto minmax(10rem, 1fr) minmax(7.5rem, 10rem) auto;
    width: min(100%, 720px);
    gap: 0.55rem;
  }

  .timeline {
    order: 0;
    padding: 0.62rem 0.8rem;
  }

  .control-btn,
  .chapter-menu-button {
    min-height: 2.8rem;
  }

  .control-btn {
    min-width: 2.8rem;
  }

  .chapter-menu {
    width: min(26vw, 12.5rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition-duration: 1ms !important;
    scroll-behavior: auto !important;
  }
}