/* Leitor de catálogo (folhear) */
.leitor-pagina { overflow: hidden; }
.leitor {
  position: fixed;
  inset: 0;
  display: grid;
  grid-template-rows: auto 1fr auto auto;
  background:
    radial-gradient(70% 60% at 50% 48%, rgba(49, 90, 74, .55) 0%, transparent 75%),
    var(--musgo);
  padding-bottom: env(safe-area-inset-bottom);
}

/* topo */
.leitor__topo {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  padding: 14px clamp(12px, 3vw, 32px);
}
.leitor__voltar {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  justify-self: start;
  font-size: .72rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--pedra);
  transition: color .2s;
}
.leitor__voltar:hover { color: var(--linho); }
button.leitor__voltar { padding: 6px 0; border: 0; background: none; font-family: inherit; cursor: pointer; }
.leitor__voltar svg { width: 18px; height: 18px; }
.leitor__titulo {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.15rem, 2.4vw, 1.6rem);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.leitor__marca { justify-self: end; width: 64px; }
.leitor__marca img { width: 100%; height: auto; }

svg { fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }

/* palco */
.leitor__palco {
  position: relative;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px clamp(8px, 6vw, 96px);
}
.livro-area { position: relative; transition: transform .7s cubic-bezier(.2, .7, .2, 1); }
.livro-area .stf__parent { margin: 0 auto; }
.carregando {
  position: absolute;
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.3rem;
  color: var(--pedra);
}
.leitor.pronto .carregando { display: none; }

.pagina {
  background: #f4f1ea;
  overflow: hidden;
}
.pagina img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  user-select: none;
  -webkit-user-drag: none;
  pointer-events: none;
}
.pagina__par { display: flex; width: 100%; height: 100%; }
.pagina__par img { width: 50%; }

/* sombra da dobra, perto da lombada */
.stf__item.--left::after,
.stf__item.--right::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 7%;
  pointer-events: none;
}
.stf__item.--left::after { right: 0; background: linear-gradient(90deg, transparent, rgba(0, 0, 0, .16)); }
.stf__item.--right::after { left: 0; background: linear-gradient(270deg, transparent, rgba(0, 0, 0, .2)); }
.livro-area.unica .stf__item::after { display: none; }

.livro-area::before {
  content: "";
  position: absolute;
  left: 4%;
  right: 4%;
  bottom: -26px;
  height: 40px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(0, 0, 0, .55), transparent);
  pointer-events: none;
}

.seta {
  position: absolute;
  top: 50%;
  z-index: 5;
  width: 52px;
  height: 52px;
  margin-top: -26px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--linho);
  opacity: .55;
  cursor: pointer;
  transition: opacity .2s, background .2s;
}
.seta:hover { opacity: 1; background: rgba(236, 230, 218, .08); }
.seta svg { width: 30px; height: 30px; stroke-width: 1.2; }
.seta--ant { left: clamp(4px, 1.5vw, 24px); }
.seta--prox { right: clamp(4px, 1.5vw, 24px); }
.seta[disabled] { opacity: 0; pointer-events: none; }

/* barra */
.barra {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  width: min(720px, calc(100% - 24px));
  margin: 10px auto 0;
  padding: 6px;
  border: 1px solid var(--linha);
  border-radius: 999px;
  background: rgba(18, 32, 26, .72);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.barra__grupo { display: flex; align-items: center; gap: 2px; }
.barra button, .barra a {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--linho);
  cursor: pointer;
  transition: background .2s, color .2s;
}
.barra button:hover, .barra a:hover { background: rgba(236, 230, 218, .1); color: #fff; }
.barra button[aria-pressed="true"] { color: var(--dourado); }
.barra button[disabled] { opacity: .3; cursor: default; background: transparent; }
.barra svg { width: 20px; height: 20px; }
.indicador {
  min-width: 92px;
  text-align: center;
  font-size: .78rem;
  letter-spacing: .14em;
  font-variant-numeric: tabular-nums;
  color: var(--linho);
}
.leitor__credito {
  padding: 10px 16px 12px;
  text-align: center;
  font-size: .66rem;
  letter-spacing: .04em;
  color: var(--pedra);
}
.leitor__credito a { color: #fff; font-weight: 500; text-decoration: none; }
.leitor__credito a:hover { color: var(--dourado); }

/* miniaturas */
.miniaturas {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 20;
  max-height: 72%;
  display: flex;
  flex-direction: column;
  background: rgba(14, 25, 20, .96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--linha);
  animation: subir .35s cubic-bezier(.2, .7, .2, 1);
}
.miniaturas[hidden], .zoom[hidden] { display: none; }
.miniaturas__topo {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px 10px 20px;
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--pedra);
}
.miniaturas__topo button, .zoom__controles button {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--linho);
  cursor: pointer;
}
.miniaturas__topo button:hover, .zoom__controles button:hover { background: rgba(236, 230, 218, .1); }
.miniaturas__topo svg, .zoom__controles svg { width: 20px; height: 20px; }
.miniaturas__lista {
  overflow-y: auto;
  padding: 4px 20px 24px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 22px 16px;
}
.mini {
  display: flex;
  border: 0;
  background: none;
  cursor: pointer;
  color: var(--pedra);
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font: inherit;
  font-size: .7rem;
  letter-spacing: .14em;
}
.mini__imgs { display: flex; box-shadow: 0 10px 24px -10px rgba(0, 0, 0, .8); outline: 2px solid transparent; outline-offset: 3px; transition: outline-color .2s; }
.mini__imgs img { height: 96px; width: auto; background: var(--musgo-2); }
.mini:hover .mini__imgs { outline-color: rgba(205, 159, 87, .5); }
.mini.atual { color: var(--dourado); }
.mini.atual .mini__imgs { outline-color: var(--dourado); }

/* zoom */
.zoom {
  position: absolute;
  inset: 0;
  z-index: 30;
  background: rgba(10, 18, 14, .97);
  animation: aparecer .25s ease-out;
}
.zoom__area {
  position: absolute;
  inset: 0;
  overflow: auto;
  cursor: grab;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}
.zoom__area.arrastando { cursor: grabbing; }
.zoom__conteudo {
  display: flex;
  justify-content: center;
  align-items: center;
  width: max-content;
  min-width: 100%;
  min-height: 100%;
  padding: 24px;
}
.zoom__conteudo img { flex: 0 0 auto; user-select: none; -webkit-user-drag: none; background: #f4f1ea; }
.zoom__controles {
  position: absolute;
  right: 16px;
  top: 16px;
  display: flex;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--linha);
  border-radius: 999px;
  background: rgba(18, 32, 26, .85);
}

@keyframes subir { from { transform: translateY(24px); opacity: 0; } to { transform: none; opacity: 1; } }
@keyframes aparecer { from { opacity: 0; } to { opacity: 1; } }

/* versão para colar na landing page */
.embed .leitor { background: radial-gradient(70% 60% at 50% 48%, rgba(49, 90, 74, .45) 0%, transparent 75%), var(--musgo); }
.embed .leitor__topo { padding-top: 10px; padding-bottom: 6px; }
.embed .leitor__credito { padding: 6px 16px 8px; }

@media (max-width: 640px) {
  .leitor__topo { grid-template-columns: auto 1fr auto; }
  .leitor__voltar span { display: none; }
  .leitor__titulo { text-align: center; }
  .seta { display: none; }
  .leitor__palco { padding: 8px 10px; }
  .barra { width: calc(100% - 16px); }
  .barra button, .barra a { width: 36px; height: 36px; }
  .indicador { min-width: 64px; letter-spacing: .06em; }
  .miniaturas__lista { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); }
  .mini__imgs img { height: 72px; }
}

@media (prefers-reduced-motion: reduce) {
  .miniaturas, .zoom { animation: none; }
}

/* sombra sob a página visível quando o livro está fechado */
.livro-area.fechado-capa::before { left: 52%; right: 2%; }
.livro-area.fechado-verso::before { left: 2%; right: 52%; }

.dica-girar {
  position: absolute;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  z-index: 6;
  padding: 10px 18px;
  border-radius: 999px;
  background: rgba(18, 32, 26, .9);
  border: 1px solid var(--linha);
  font-size: .78rem;
  white-space: nowrap;
  color: var(--linho);
  transition: opacity .8s;
  animation: aparecer .4s ease-out;
}
.dica-girar.sumindo { opacity: 0; }