/* ==========================================================================
   Books-in — área logada: entrada, salão, seções e leitor de páginas
   Usa os tokens de css/style.css (carregado antes deste arquivo).
   ========================================================================== */

/* ==========================================================================
   Entrada (entrar.html)
   ========================================================================== */
.entrada {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
}

.entrada__cena {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(1.75rem, 4vw, 3rem);
}
.entrada__cena img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.04);
  animation: respira 26s ease-in-out infinite alternate;
}
.entrada__cena::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, rgba(11, 9, 7, 0.55) 0%, rgba(11, 9, 7, 0.2) 45%, rgba(11, 9, 7, 0.75) 100%),
    radial-gradient(60% 50% at 30% 35%, rgba(255, 196, 110, 0.18), transparent 70%);
}
.entrada__cena > * { position: relative; z-index: 2; }

@keyframes respira {
  from { transform: scale(1.04) translate3d(0, 0, 0); }
  to { transform: scale(1.12) translate3d(-1.5%, -1%, 0); }
}

.entrada__frase {
  max-width: 30ch;
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  font-weight: 500;
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: #f8efe0;
  text-shadow: 0 2px 30px rgba(0, 0, 0, 0.6);
}
.entrada__frase em { font-style: italic; color: var(--amber-soft); }
.entrada__assinatura { font-size: 0.85rem; color: rgba(248, 239, 224, 0.72); }

.entrada__numeros {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  max-width: 34rem;
}
.entrada__numeros strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 500;
  color: #f8efe0;
}
.entrada__numeros span { font-size: 0.76rem; color: rgba(248, 239, 224, 0.66); }

.entrada__painel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.5rem;
  padding: clamp(1.75rem, 4vw, 3.5rem);
  background: #100d0b;
  border-left: 1px solid var(--line);
  overflow-y: auto;
}
.entrada__painel .marca { margin-right: 0; }

.portas {
  display: flex;
  gap: 0.4rem;
  padding: 0.3rem;
  border: 1px solid var(--line);
  border-radius: var(--r-full);
  background: var(--surface);
}
.porta {
  flex: 1;
  padding: 0.62rem 1rem;
  border-radius: var(--r-full);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--txt-3);
  transition: background 0.25s var(--ease), color 0.25s;
}
.porta[aria-selected="true"] {
  background: linear-gradient(180deg, rgba(242, 201, 138, 0.22), rgba(232, 163, 61, 0.16));
  color: var(--amber-soft);
  box-shadow: inset 0 0 0 1px rgba(232, 163, 61, 0.35);
}

.form-conta { display: grid; gap: 0.9rem; }
.form-conta h1 { font-size: clamp(1.7rem, 3vw, 2.1rem); }
.form-conta p.sub { margin: 0; font-size: 0.92rem; color: var(--txt-3); }
.form-conta .aviso { margin: 0; min-height: 1.2em; font-size: 0.85rem; color: var(--txt-4); }
.form-conta .aviso.erro { color: #e08b6a; }
.form-conta .aviso.ok { color: var(--sage); }
.form-conta .linha-extra {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.83rem;
  color: var(--txt-3);
}
.form-conta .lembrar { display: inline-flex; align-items: center; gap: 0.5rem; }
.form-conta .lembrar input { width: 16px; height: 16px; accent-color: var(--amber); }

.forca { display: grid; gap: 0.35rem; }
.forca__barra { height: 4px; border-radius: 99px; background: rgba(255, 255, 255, 0.1); overflow: hidden; }
.forca__barra i { display: block; height: 100%; width: 0; border-radius: 99px; background: var(--amber); transition: width 0.3s, background 0.3s; }
.forca__texto { font-size: 0.76rem; color: var(--txt-4); }

@media (max-width: 900px) {
  .entrada { grid-template-columns: 1fr; }
  .entrada__cena { min-height: 34vh; }
  .entrada__painel { border-left: 0; border-top: 1px solid var(--line); }
}

/* ==========================================================================
   Salão (biblioteca.html)
   ========================================================================== */
.app-topo {
  position: sticky;
  top: 0;
  z-index: 70;
  display: flex;
  align-items: center;
  gap: 1rem;
  height: 68px;
  padding-inline: clamp(1rem, 3vw, 2.25rem);
  background: rgba(11, 10, 9, 0.82);
  backdrop-filter: blur(18px) saturate(140%);
  border-bottom: 1px solid var(--line-soft);
}
.app-topo .marca { margin-right: 0.5rem; }
.app-topo__vias { display: flex; gap: 0.2rem; margin-right: auto; }
.app-topo__vias button {
  padding: 0.45rem 0.9rem;
  border-radius: var(--r-full);
  font-size: 0.88rem;
  color: var(--txt-3);
  transition: color 0.2s, background 0.2s;
}
.app-topo__vias button:hover { color: var(--txt); background: var(--surface); }
.app-topo__vias button[aria-current="true"] { color: var(--amber-soft); background: rgba(232, 163, 61, 0.14); }

.busca-app { position: relative; }
.busca-app svg { position: absolute; left: 0.85rem; top: 50%; transform: translateY(-50%); color: var(--txt-4); }
.busca-app input {
  width: clamp(150px, 22vw, 260px);
  padding: 0.55rem 0.9rem 0.55rem 2.4rem;
  border-radius: var(--r-full);
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--txt);
  font-size: 0.88rem;
}
.busca-app input:focus { outline: none; border-color: rgba(232, 163, 61, 0.5); }

.perfil { position: relative; }
.perfil__botao {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.35rem 0.8rem 0.35rem 0.35rem;
  border: 1px solid var(--line);
  border-radius: var(--r-full);
  background: var(--surface);
  font-size: 0.86rem;
}
.perfil__inicial {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: var(--r-full);
  background: linear-gradient(150deg, var(--amber-soft), var(--amber-deep));
  color: #2a1a06;
  font-weight: 700;
  font-size: 0.85rem;
}
.perfil__menu {
  position: absolute;
  right: 0;
  top: calc(100% + 0.5rem);
  min-width: 220px;
  padding: 0.5rem;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: #15120f;
  box-shadow: var(--shadow);
  display: none;
}
.perfil__menu.aberto { display: block; }
.perfil__menu p { margin: 0 0 0.35rem; padding: 0.5rem 0.65rem; font-size: 0.8rem; color: var(--txt-4); border-bottom: 1px solid var(--line-soft); }
.perfil__menu button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.55rem 0.65rem;
  border-radius: 10px;
  font-size: 0.88rem;
  color: var(--txt-2);
}
.perfil__menu button:hover { background: var(--surface); color: var(--txt); }

.salao { padding: clamp(1.5rem, 4vw, 3rem) clamp(1rem, 3vw, 2.25rem) 5rem; }

.saudacao {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
}
.saudacao h1 { font-size: clamp(1.8rem, 4vw, 2.7rem); }
.saudacao h1 em { font-style: italic; color: var(--amber-soft); }
.saudacao p { margin: 0.5rem 0 0; color: var(--txt-3); font-size: 0.95rem; }

/* ---------- salas (seções) como estantes ---------- */
.salas {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: clamp(1rem, 2vw, 1.5rem);
}
.sala {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 0.2rem;
  min-height: 210px;
  padding: 1.25rem;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
  overflow: hidden;
  text-align: left;
  transition: transform 0.35s var(--ease), border-color 0.35s, box-shadow 0.35s;
}
.sala:hover { transform: translateY(-6px); border-color: rgba(232, 163, 61, 0.4); box-shadow: 0 26px 50px -30px rgba(0, 0, 0, 0.9); }

/* lombadas de livros ao fundo da estante */
.sala__prateleira {
  position: absolute;
  inset: 0 0 auto 0;
  height: 128px;
  display: flex;
  align-items: flex-end;
  gap: 4px;
  padding: 0 1rem;
  opacity: 0.95;
}
.sala__prateleira i {
  flex: 1;
  border-radius: 3px 3px 0 0;
  box-shadow: inset -2px 0 0 rgba(0, 0, 0, 0.25), inset 2px 0 0 rgba(255, 255, 255, 0.07);
}
.sala::before {
  content: "";
  position: absolute;
  left: 0; right: 0;
  top: 126px;
  height: 7px;
  background: linear-gradient(180deg, #6b4a2c, #3a2718);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.5);
}
.sala::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 10, 9, 0.1) 40%, rgba(11, 10, 9, 0.92) 68%);
}
.sala > * { position: relative; z-index: 2; }
.sala h3 { font-family: var(--font-serif); font-size: 1.3rem; font-weight: 500; letter-spacing: -0.02em; }
.sala span { font-size: 0.82rem; color: var(--txt-4); }

/* ==========================================================================
   Catálogo em trilhos (estilo vitrine de streaming)
   ========================================================================== */
.destaque {
  position: relative;
  display: grid;
  align-content: end;
  gap: 0.9rem;
  min-height: clamp(280px, 42vh, 420px);
  padding: clamp(1.5rem, 4vw, 3rem);
  margin-bottom: 2.5rem;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
}
.destaque__fundo { position: absolute; inset: 0; }
.destaque__fundo img { width: 100%; height: 100%; object-fit: cover; filter: saturate(1.05); }
.destaque__fundo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(11, 10, 9, 0.95) 0%, rgba(11, 10, 9, 0.7) 45%, rgba(11, 10, 9, 0.25) 100%),
              linear-gradient(0deg, rgba(11, 10, 9, 0.95), transparent 60%);
}
.destaque > * { position: relative; z-index: 2; }
.destaque h2 { font-size: clamp(1.7rem, 4vw, 3rem); max-width: 18ch; }
.destaque p { margin: 0; max-width: 54ch; color: var(--txt-2); font-size: 0.95rem; }
.destaque__meta { display: flex; flex-wrap: wrap; gap: 0.75rem; font-size: 0.82rem; color: var(--txt-4); }
.destaque__acoes { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 0.4rem; }

.trilho { margin-bottom: clamp(1.75rem, 3vw, 2.75rem); }
.trilho__topo { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: 0.85rem; }
.trilho__topo h3 { font-family: var(--font-serif); font-size: 1.22rem; font-weight: 500; letter-spacing: -0.02em; }
.trilho__topo span { font-size: 0.78rem; color: var(--txt-4); }

.trilho__caixa { position: relative; }
.trilho__fita {
  display: flex;
  gap: 0.9rem;
  overflow-x: auto;
  scroll-behavior: smooth;
  scroll-snap-type: x proximity;
  padding: 0.4rem 0.2rem 1rem;
  scrollbar-width: none;
}
.trilho__fita::-webkit-scrollbar { display: none; }

.trilho__seta {
  position: absolute;
  top: 50%;
  transform: translateY(-58%);
  z-index: 5;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: var(--r-full);
  border: 1px solid var(--line);
  background: rgba(16, 13, 11, 0.9);
  color: var(--txt);
  opacity: 0;
  transition: opacity 0.25s, background 0.25s;
  backdrop-filter: blur(8px);
}
.trilho__caixa:hover .trilho__seta { opacity: 1; }
.trilho__seta:hover { background: rgba(232, 163, 61, 0.9); color: #241605; }
.trilho__seta--esq { left: -8px; }
.trilho__seta--dir { right: -8px; }

.ficha {
  flex: none;
  width: clamp(132px, 14vw, 172px);
  scroll-snap-align: start;
  text-align: left;
  transition: transform 0.3s var(--ease);
}
.ficha:hover, .ficha:focus-visible { transform: translateY(-8px) scale(1.03); z-index: 3; }
.ficha__capa {
  position: relative;
  aspect-ratio: 2 / 3;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 16px 34px -20px rgba(0, 0, 0, 0.95);
  background: #15110d;
}
.ficha__capa img { width: 100%; height: 100%; object-fit: cover; }
.ficha:hover .ficha__capa { box-shadow: 0 24px 46px -18px rgba(0, 0, 0, 1); border-color: rgba(232, 163, 61, 0.45); }
.ficha__nome { margin-top: 0.5rem; font-size: 0.85rem; font-weight: 600; line-height: 1.25; }
.ficha__autor { font-size: 0.76rem; color: var(--txt-4); }
.ficha__barra { height: 3px; margin-top: 0.4rem; border-radius: 99px; background: rgba(255, 255, 255, 0.12); overflow: hidden; }
.ficha__barra i { display: block; height: 100%; background: var(--amber); }

/* capa tipográfica dentro da ficha */
.ficha__capa--tipo {
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 0.4rem;
  padding: 0.8rem 0.7rem;
  background: var(--cp-fundo);
}
.ficha__capa--tipo .ct { font-family: var(--font-serif); font-size: 0.92rem; line-height: 1.15; color: var(--cp-txt); align-self: center;
  display: -webkit-box; -webkit-line-clamp: 5; -webkit-box-orient: vertical; overflow: hidden; }
.ficha__capa--tipo .ca { font-size: 0.66rem; color: var(--cp-suave); }
.ficha__capa--tipo .cg { font-size: 0.58rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--cp-suave); }

/* ==========================================================================
   Ficha do livro (antes de abrir)
   ========================================================================== */
.detalhe {
  position: fixed;
  inset: 0;
  z-index: 110;
  display: grid;
  place-items: center;
  padding: clamp(1rem, 3vw, 2rem);
  background: rgba(6, 5, 4, 0.78);
  backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}
.detalhe.aberto { opacity: 1; visibility: visible; }
.detalhe__caixa {
  position: relative;
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: clamp(1.25rem, 3vw, 2.5rem);
  width: min(860px, 100%);
  max-height: 88vh;
  overflow-y: auto;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: #14110e;
  box-shadow: var(--shadow);
  transform: translateY(18px) scale(0.98);
  transition: transform 0.35s var(--ease);
}
.detalhe.aberto .detalhe__caixa { transform: none; }
.detalhe__capa { aspect-ratio: 2/3; border-radius: 14px; overflow: hidden; border: 1px solid var(--line); box-shadow: 0 22px 44px -22px #000; }
.detalhe__capa img { width: 100%; height: 100%; object-fit: cover; }
.detalhe__info { display: grid; gap: 0.9rem; align-content: start; }
.detalhe__info h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
.detalhe__autor { font-size: 0.95rem; color: var(--amber-soft); }
.detalhe__dados { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.detalhe__dados span {
  padding: 0.3rem 0.75rem;
  border-radius: var(--r-full);
  border: 1px solid var(--line);
  background: var(--surface);
  font-size: 0.78rem;
  color: var(--txt-3);
}
.detalhe__info p { margin: 0; font-size: 0.93rem; color: var(--txt-2); line-height: 1.6; }
.detalhe__acoes { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 0.3rem; }
.detalhe__fechar { position: absolute; top: 0.9rem; right: 0.9rem; }

@media (max-width: 680px) {
  .detalhe__caixa { grid-template-columns: 1fr; }
  .detalhe__capa { width: 150px; }
}

/* ==========================================================================
   Leitor: abrir o livro e virar as páginas
   ========================================================================== */
.leitor-livro {
  position: fixed;
  inset: 0;
  z-index: 130;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(120% 90% at 50% 0%, #241a12 0%, #140f0b 55%, #0b0908 100%);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s, visibility 0.35s;
}
.leitor-livro.aberto { opacity: 1; visibility: visible; }

.lv-topo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem clamp(0.8rem, 2.5vw, 1.5rem);
  color: var(--txt-2);
}
.lv-topo__id { margin-right: auto; min-width: 0; }
.lv-topo__id b { display: block; font-size: 0.9rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lv-topo__id span { font-size: 0.75rem; color: var(--txt-4); }

.lv-palco {
  flex: 1;
  display: grid;
  place-items: center;
  padding: clamp(0.5rem, 2vh, 1.5rem) clamp(0.5rem, 2vw, 1.5rem);
  perspective: 2400px;
  min-height: 0;
}

/* o volume: capa + miolo */
.volume {
  position: relative;
  width: min(1080px, 96vw);
  height: min(74vh, 780px);
  transform-style: preserve-3d;
}

/* lombada e sombra de mesa */
.volume::after {
  content: "";
  position: absolute;
  left: 6%;
  right: 6%;
  bottom: -26px;
  height: 40px;
  background: radial-gradient(50% 50% at 50% 50%, rgba(0, 0, 0, 0.6), transparent 72%);
  filter: blur(6px);
}

.capa-3d {
  position: absolute;
  inset: 0;
  z-index: 6;
  border-radius: 6px 14px 14px 6px;
  transform-origin: left center;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.95);
  overflow: hidden;
  background: linear-gradient(120deg, #3a2517, #241609);
  display: grid;
  place-items: center;
}
.capa-3d img { width: 100%; height: 100%; object-fit: cover; opacity: 0.92; }
.capa-3d__texto {
  position: absolute;
  inset: auto 0 0 0;
  padding: 2rem;
  text-align: center;
  background: linear-gradient(0deg, rgba(20, 12, 6, 0.92), transparent);
}
.capa-3d__texto strong { display: block; font-family: var(--font-serif); font-size: clamp(1.4rem, 3vw, 2.2rem); font-weight: 500; color: #f7ead3; }
.capa-3d__texto span { font-size: 0.9rem; color: #d8bd93; }
.capa-3d.abrindo { animation: abrirCapa 1.05s cubic-bezier(0.4, 0.06, 0.2, 1) forwards; }
@keyframes abrirCapa {
  0% { transform: rotateY(0deg); }
  100% { transform: rotateY(-172deg); }
}

/* miolo do livro: duas páginas */
.miolo {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-radius: 6px 14px 14px 6px;
  overflow: hidden;
  background: var(--papel, #f3e7d3);
  box-shadow: 0 30px 70px -32px rgba(0, 0, 0, 0.95), 0 0 0 1px rgba(0, 0, 0, 0.35);
}
/* sombra central da dobra */
.miolo::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 70px;
  transform: translateX(-50%);
  pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(60, 40, 20, 0.22) 44%, rgba(60, 40, 20, 0.3) 50%, rgba(60, 40, 20, 0.22) 56%, transparent);
}
/* aparo das páginas nas laterais */
.miolo::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  box-shadow: inset 7px 0 12px -8px rgba(90, 60, 30, 0.5), inset -7px 0 12px -8px rgba(90, 60, 30, 0.5);
}

.pagina-livro {
  position: relative;
  padding: clamp(1.4rem, 3.2vh, 2.6rem) clamp(1.5rem, 3vw, 3rem);
  overflow: hidden;
  color: var(--tinta, #2c2318);
}

.pagina-livro__texto {
  height: 100%;
  overflow: hidden;
  font-family: var(--font-serif);
  font-size: var(--leitura, 19px);
  line-height: 1.72;
  text-align: justify;
  hyphens: auto;
}
.pagina-livro__texto p { margin: 0 0 1em; }
.pagina-livro__texto .estrofe { white-space: pre-line; text-align: left; hyphens: none; }
.pagina-livro__texto h4 {
  margin: 0 0 1.1em;
  font-size: 1.15em;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-align: center;
}
.pagina-livro__texto .capitular::first-letter {
  float: left;
  font-size: 3.1em;
  line-height: 0.82;
  padding: 0.08em 0.1em 0 0;
  color: #9a6520;
}

.pagina-livro__num {
  position: absolute;
  left: 0; right: 0;
  bottom: clamp(0.5rem, 1.6vh, 1rem);
  text-align: center;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  color: rgba(80, 62, 40, 0.75);
}

/* folha que vira */
.folha {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 50%;
  z-index: 8;
  transform-origin: left center;
  transform-style: preserve-3d;
  pointer-events: none;
  background: var(--papel, #f3e7d3);
  box-shadow: -8px 0 24px -10px rgba(0, 0, 0, 0.45);
  backface-visibility: hidden;
}
.folha--volta { left: 0; transform-origin: right center; box-shadow: 8px 0 24px -10px rgba(0, 0, 0, 0.45); }
.folha.vira { animation: virarFolha 0.62s cubic-bezier(0.42, 0.02, 0.24, 1) forwards; }
.folha--volta.vira { animation: virarFolhaVolta 0.62s cubic-bezier(0.42, 0.02, 0.24, 1) forwards; }
@keyframes virarFolha {
  from { transform: rotateY(0deg); filter: brightness(1); }
  to { transform: rotateY(-178deg); filter: brightness(0.86); }
}
@keyframes virarFolhaVolta {
  from { transform: rotateY(0deg); filter: brightness(1); }
  to { transform: rotateY(178deg); filter: brightness(0.86); }
}

/* zonas de clique para virar */
.lv-toque {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 26%;
  z-index: 9;
  background: transparent;
  cursor: pointer;
}
.lv-toque--esq { left: 0; }
.lv-toque--dir { right: 0; }
.lv-toque:hover { background: linear-gradient(90deg, rgba(0, 0, 0, 0.05), transparent); }
.lv-toque--dir:hover { background: linear-gradient(270deg, rgba(0, 0, 0, 0.05), transparent); }

/* rodapé do leitor */
.lv-rodape {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.65rem clamp(0.8rem, 2.5vw, 1.5rem) 1rem;
}
.lv-rodape__barra { flex: 1; height: 4px; border-radius: 99px; background: rgba(255, 255, 255, 0.1); overflow: hidden; }
.lv-rodape__barra i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--amber-deep), var(--amber-soft)); transition: width 0.3s; }
.lv-rodape span { font-size: 0.78rem; color: var(--txt-4); font-variant-numeric: tabular-nums; }

/* temas de papel */
.leitor-livro[data-papel="sepia"] { --papel: #f3e7d3; --tinta: #2c2318; }
.leitor-livro[data-papel="claro"] { --papel: #fbf9f5; --tinta: #23201b; }
.leitor-livro[data-papel="escuro"] { --papel: #1d1913; --tinta: #e6ddcd; }
.leitor-livro[data-papel="escuro"] .pagina-livro__num { color: rgba(220, 205, 180, 0.5); }
.leitor-livro[data-papel="escuro"] .miolo::after {
  background: linear-gradient(90deg, transparent, rgba(0, 0, 0, 0.5) 44%, rgba(0, 0, 0, 0.6) 50%, rgba(0, 0, 0, 0.5) 56%, transparent);
}
.leitor-livro[data-papel="escuro"] .pagina-livro__texto .capitular::first-letter { color: var(--amber); }

/* sumário lateral */
.lv-sumario {
  position: absolute;
  top: 0; bottom: 0; left: 0;
  z-index: 12;
  width: min(320px, 82vw);
  padding: 1.25rem 1rem 2rem;
  overflow-y: auto;
  background: #14110e;
  border-right: 1px solid var(--line);
  transform: translateX(-102%);
  transition: transform 0.35s var(--ease);
}
.lv-sumario.aberto { transform: none; }
.lv-sumario h4 { margin: 0 0 0.8rem 0.6rem; font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--txt-4); }
.lv-sumario button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.6rem 0.75rem;
  border-radius: 10px;
  font-size: 0.86rem;
  color: var(--txt-3);
}
.lv-sumario button:hover { background: var(--surface); color: var(--txt); }
.lv-sumario button[aria-current="true"] { background: rgba(232, 163, 61, 0.14); color: var(--amber-soft); font-weight: 600; }

/* uma página só em telas estreitas */
@media (max-width: 860px) {
  .miolo { grid-template-columns: 1fr; }
  .miolo::after { display: none; }
  .pagina-livro--par { display: none; }
  .volume { height: min(76vh, 720px); }
  .folha { left: 0; width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .capa-3d.abrindo { animation-duration: 0.01ms; }
  .folha.vira, .folha--volta.vira { animation-duration: 0.01ms; }
  .entrada__cena img { animation: none; }
}

/* mensagem de carregando dentro do leitor */
.lv-carregando {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  gap: 1rem;
  color: var(--txt-3);
  font-size: 0.92rem;
  text-align: center;
  z-index: 20;
}