/* ==========================================================
   Diseño "Relato" · Boda
   libro de tapa dura que se abre y se lee pasando páginas
   ========================================================== */

@property --sombra { syntax: "<number>"; inherits: true; initial-value: 0; }

:root {
  --azul: #1c2b45;
  --azul-osc: #121a28;
  --acento: #6f87a3;
  --papel: #f8f4ec;
  --tinta: #27303b;
  --tinta-suave: #69727d;
  --plata: linear-gradient(115deg, #7d8896 0%, #dfe5ea 22%, #ffffff 36%, #aab4be 54%, #7a8590 70%, #e3e8ec 86%, #9aa4ae 100%);
  --plata-plano: #cfd6dc;

  --titulo: "Playfair Display", Georgia, serif;
  --caps: "Cinzel", Georgia, serif;
  --serif: "Cormorant Garamond", Garamond, Georgia, serif;

  --guarda: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='46' height='46'%3E%3Cg fill='none' stroke='%236f87a3' stroke-width='.9' stroke-linecap='round'%3E%3Cpath d='M12 34c4-8 10-12 18-14'/%3E%3Cpath d='M17 27c-3-2-4-5-3-8 3 1 5 4 3 8zM23 23c-1-3 0-6 3-8 1 3 0 6-3 8zM20 30c3-1 6 0 8 2-3 1-6 0-8-2zM27 25c3-1 6 0 7 3-3 0-6 0-7-3z'/%3E%3C/g%3E%3Ccircle cx='38' cy='9' r='1.4' fill='%236f87a3' fill-opacity='.6'/%3E%3C/svg%3E");
}

body {
  background: var(--azul-osc);
  color: var(--tinta);
  font-family: var(--serif);
  overflow: hidden;
}
.amp { font-family: var(--serif); }

/* ---------- Mesa ---------- */
.mesa {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-bottom: 72px;
  background:
    var(--grano),
    radial-gradient(55% 45% at 50% 42%, rgba(255, 226, 180, .16), transparent 70%),
    radial-gradient(70% 60% at 50% 45%, #34445e 0%, #19222f 62%, #0b1018 100%);
  overflow: hidden;
}

/* ---------- Libro ---------- */
.libro {
  position: relative;
  width: min(100vw, 480px);
  height: calc(100svh - 76px);
  max-height: 900px;
  --s: 1;
  --tx: 0px;
  --rz: 0deg;
  transform: translateX(var(--tx)) scale(var(--s)) rotate(var(--rz));
  transition: transform 1.3s cubic-bezier(.45, .05, .2, 1);
}
.libro.cerrado  { --s: .6; --rz: -1.5deg; cursor: pointer; animation: respirar 5s ease-in-out infinite; }
.libro.abriendo { --s: .56; --tx: calc(min(100vw, 480px) * .28); --rz: 0deg; }
.libro.leyendo  { --s: 1; --tx: 0px; --rz: 0deg; }
@keyframes respirar { 0%, 100% { translate: 0 0; } 50% { translate: 0 -6px; } }

/* En pantallas anchas se ve el libro abierto completo (doble página centrada) */
@media (min-width: 1000px) {
  .libro.leyendo { --tx: 240px; }
}

.hojas {
  position: absolute;
  inset: 0;
  perspective: 2400px;
  box-shadow: 0 34px 60px -24px rgba(0, 0, 0, .8);
}
.libro.abriendo .hojas, .libro.leyendo .hojas { box-shadow: 0 24px 50px -20px rgba(0, 0, 0, .75); }

.hoja {
  position: absolute;
  inset: 0;
  transform-origin: 0 50%;
  transform-style: preserve-3d;
  transition: transform .95s cubic-bezier(.45, .05, .25, 1);
}
.hoja.volteada { transform: rotateY(-180deg); }
.hoja.volteando { animation: sombraHoja .95s ease; }
@keyframes sombraHoja { 0% { --sombra: 0; } 45% { --sombra: .7; } 100% { --sombra: 0; } }

.cara {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  overflow: hidden;
}
.cara--dorso { transform: rotateY(180deg); }
.cara::after {                              /* sombra al curvarse la hoja */
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: var(--sombra);
}
.cara--frente::after { background: linear-gradient(270deg, rgba(15, 20, 30, .85), rgba(15, 20, 30, .25) 45%, transparent 80%); }
.cara--dorso::after  { background: linear-gradient(90deg, rgba(15, 20, 30, .7), transparent 70%); }

/* Lomo, cantos y cinta (solo con el libro cerrado) */
.libro__lomo, .libro__cantos, .cinta { position: absolute; pointer-events: none; transition: opacity .6s ease; }
.libro__lomo {
  left: -16px;
  top: -2px;
  bottom: -2px;
  width: 18px;
  border-radius: 8px 0 0 8px;
  background:
    linear-gradient(180deg, transparent 10%, rgba(255, 255, 255, .25) 10.4%, transparent 11%, transparent 13%, rgba(255, 255, 255, .25) 13.4%, transparent 14%,
                     transparent 86%, rgba(255, 255, 255, .25) 86.4%, transparent 87%, transparent 89%, rgba(255, 255, 255, .25) 89.4%, transparent 90%),
    linear-gradient(90deg, #0d1422, #22365a 45%, #182640);
  box-shadow: -4px 10px 20px rgba(0, 0, 0, .5);
}
.libro__cantos {
  right: -9px;
  top: 5px;
  bottom: 5px;
  width: 10px;
  border-radius: 0 3px 3px 0;
  background: repeating-linear-gradient(90deg, #f3eee2 0 1px, #d6cdb9 1px 2px);
  box-shadow: 2px 6px 10px rgba(0, 0, 0, .4);
}
.cinta {
  left: 70%;
  bottom: -54px;
  width: 16px;
  height: 66px;
  z-index: -1;
  background: linear-gradient(90deg, #4f6683, #8ea4bd 45%, #5c7391);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% 84%, 0 100%);
  transform-origin: 50% 0;
  animation: cinta 4s ease-in-out infinite;
}
@keyframes cinta { 0%, 100% { transform: rotate(-3deg); } 50% { transform: rotate(4deg); } }
.libro:not(.cerrado) .libro__lomo,
.libro:not(.cerrado) .cinta { opacity: 0; }
.libro.leyendo .libro__cantos { opacity: .6; width: 6px; right: -5px; }

/* ---------- Tapa ---------- */
.tapa {
  border-radius: 0 6px 6px 0;
  background-color: var(--azul);
  background-image:
    radial-gradient(120% 80% at 30% 18%, rgba(255, 255, 255, .1), transparent 60%),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, .035) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(90deg, rgba(0, 0, 0, .14) 0 1px, transparent 1px 3px),
    var(--grano);
  box-shadow: inset 10px 0 14px -6px rgba(0, 0, 0, .55), inset -1px 0 0 rgba(255, 255, 255, .08);
}
.tapa__marco {
  position: absolute;
  inset: 7% 9%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  border: 1px solid rgba(222, 228, 234, .7);
  outline: 1px solid rgba(222, 228, 234, .35);
  outline-offset: 6px;
  text-align: center;
}
.tapa__esquina {
  position: absolute;
  width: 42px;
  height: 42px;
  fill: none;
  stroke: var(--plata-plano);
  stroke-width: 1;
}
.tapa__esquina--1 { left: 8px; top: 8px; }
.tapa__esquina--2 { right: 8px; top: 8px; transform: scaleX(-1); }
.tapa__esquina--3 { left: 8px; bottom: 8px; transform: scaleY(-1); }
.tapa__esquina--4 { right: 8px; bottom: 8px; transform: scale(-1, -1); }
.tapa__iniciales, .tapa__titulo, .tapa__fecha {
  margin: 0;
  background: var(--plata);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 1px 0 rgba(0, 0, 0, .5));
  animation: brilloPlata 6s linear infinite;
}
.tapa__iniciales { font-family: var(--caps); font-size: 1.6rem; letter-spacing: .35em; padding-left: .35em; }
.tapa__titulo { font-family: var(--titulo); font-style: italic; font-weight: 400; font-size: clamp(2.6rem, 11vw, 3.4rem); line-height: 1.1; padding: 0 .1em .1em; }
.tapa__fecha { font-family: var(--caps); font-size: .9rem; letter-spacing: .32em; }
.tapa__linea { width: 70px; height: 1px; background: var(--plata); }
@keyframes brilloPlata { to { background-position: -200% 0; } }

/* Guardas */
.guarda {
  background-color: #e4e7e8;
  background-image: linear-gradient(90deg, rgba(0, 0, 0, .18), transparent 10%), var(--guarda), var(--grano);
  background-size: auto, 46px 46px, auto;
}

/* ---------- Páginas ---------- */
.pagina {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 34px 30px 50px 38px;
  text-align: center;
  color: var(--tinta);
  background-color: var(--papel);
  background-image: linear-gradient(90deg, rgba(60, 50, 30, .2), rgba(60, 50, 30, 0) 8%), var(--grano), var(--fibras);
  overflow-y: auto;
  touch-action: pan-y;
  scrollbar-width: none;
}
.pagina::-webkit-scrollbar { display: none; }
.cara--dorso.pagina { background-image: linear-gradient(270deg, rgba(60, 50, 30, .2), rgba(60, 50, 30, 0) 8%), var(--grano), var(--fibras); }
.folio {
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  font-style: italic;
  font-size: .9rem;
  color: var(--tinta-suave);
}
.cap { margin: 0 0 6px; font-family: var(--caps); font-size: .62rem; letter-spacing: .45em; text-transform: uppercase; color: var(--acento); }
.titulo-pag {
  margin: 0 0 22px;
  font-family: var(--titulo);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(1.9rem, 8vw, 2.3rem);
  line-height: 1.15;
  color: var(--azul);
}
.titulo-pag::after { content: ""; display: block; width: 46px; height: 1px; margin: 14px auto 0; background: var(--acento); }

/* Portada interior */
.portada__pre { margin: 0 0 14px; font-family: var(--caps); font-size: .7rem; letter-spacing: .5em; text-transform: uppercase; color: var(--acento); }
.portada__retrato { position: relative; width: min(64%, 250px); aspect-ratio: 1; }
.corona { position: absolute; inset: 0; width: 100%; height: 100%; color: var(--acento); }
.portada__retrato img {
  position: absolute;
  inset: 15%;
  width: 70%;
  height: 70%;
  object-fit: cover;
  border-radius: 50%;
  box-shadow: 0 0 0 5px var(--papel), 0 0 0 6px rgba(111, 135, 163, .6), 0 14px 26px -10px rgba(0, 0, 0, .5);
}
.portada__nombres { margin: 18px 0 6px; font-family: var(--titulo); font-style: italic; font-weight: 400; font-size: clamp(2.2rem, 10vw, 2.9rem); line-height: 1.1; color: var(--azul); }
.portada__fecha { margin: 0; font-family: var(--caps); font-size: .76rem; letter-spacing: .3em; text-transform: uppercase; }
.portada__ciudad { margin: 6px 0 0; font-style: italic; font-size: 1.05rem; color: var(--tinta-suave); }

/* Historia */
.historia { list-style: none; margin: 0; padding: 0; max-width: 22em; }
.historia__item { position: relative; padding-bottom: 22px; }
.historia__item:not(:last-child)::after { content: "◆"; display: block; margin-top: 16px; font-size: .5rem; color: var(--acento); }
.historia__anio { font-family: var(--titulo); font-style: italic; font-size: 1.8rem; line-height: 1; color: var(--acento); }
.historia__titulo { margin: 4px 0 4px; font-family: var(--caps); font-weight: 500; font-size: .78rem; letter-spacing: .22em; text-transform: uppercase; }
.historia__texto { margin: 0; font-style: italic; font-size: 1.05rem; line-height: 1.5; color: var(--tinta-suave); }

/* Calendario */
.mes { margin: -6px 0 10px; font-family: var(--caps); font-size: .78rem; letter-spacing: .4em; text-transform: uppercase; }
.calendario {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px 2px;
  width: min(100%, 280px);
  font-size: 1.02rem;
}
.calendario span { position: relative; height: 30px; display: grid; place-items: center; color: var(--tinta-suave); }
.calendario__dia-sem { font-family: var(--caps); font-size: .62rem; color: var(--acento) !important; }
.calendario__boda { font-weight: 700; color: var(--azul) !important; }
.circulo { position: absolute; left: -12px; top: -8px; width: calc(100% + 24px); height: calc(100% + 16px); overflow: visible; }
.circulo path { fill: none; stroke: #b25c5c; stroke-width: 1.6; stroke-linecap: round; stroke-dasharray: 1; stroke-dashoffset: 1; }
.faltan { margin: 20px 0 8px; font-family: var(--caps); font-size: .62rem; letter-spacing: .45em; text-transform: uppercase; color: var(--acento); }
.cuenta { display: flex; }
.cuenta div { display: flex; flex-direction: column; align-items: center; padding: 0 12px; border-left: 1px solid rgba(111, 135, 163, .4); }
.cuenta div:first-child { border-left: 0; }
.cuenta span { font-family: var(--titulo); font-style: italic; font-size: 1.8rem; line-height: 1.1; color: var(--azul); font-variant-numeric: tabular-nums lining-nums; }
.cuenta span.tic { animation: tic .45s ease; }
@keyframes tic { from { opacity: .2; transform: translateY(-5px); } }
.cuenta small { font-family: var(--caps); font-size: .5rem; letter-spacing: .25em; text-transform: uppercase; color: var(--tinta-suave); }
.cuenta-fin { margin: 0; font-family: var(--titulo); font-style: italic; font-size: 1.5rem; color: var(--azul); }

/* Botones */
.btn-libro {
  all: unset;
  box-sizing: border-box;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 46px;
  margin-top: 18px;
  padding: 0 24px;
  border: 1px solid var(--azul);
  border-radius: 999px;
  font-family: var(--caps);
  font-size: .64rem;
  font-weight: 500;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--azul);
  cursor: pointer;
  transition: background-color .3s, color .3s, transform .2s;
}
.btn-libro:hover { background: rgba(28, 43, 69, .08); }
.btn-libro:active { transform: scale(.97); }
.btn-libro:focus-visible { outline: 2px solid var(--acento); outline-offset: 3px; }
.btn-libro--mini { min-height: 44px; margin-top: 10px; padding: 0 18px; font-size: .58rem; }
.btn-libro--lleno { background: var(--azul); color: var(--papel); box-shadow: 0 10px 20px -10px rgba(18, 26, 40, .8); }
.btn-libro--lleno:hover { background: #24375a; }

/* Lugares */
.lugares { list-style: none; margin: 0; padding: 0; width: 100%; }
.lugar { display: flex; flex-direction: column; align-items: center; }
.lugar + .lugar { margin-top: 18px; padding-top: 18px; border-top: 1px dashed rgba(111, 135, 163, .5); }
.lugar__icono { width: 50px; height: 50px; display: grid; place-items: center; border-radius: 50%; border: 1px solid var(--acento); color: var(--acento); margin-bottom: 8px; }
.lugar__titulo { margin: 0; font-family: var(--caps); font-weight: 500; font-size: .78rem; letter-spacing: .22em; text-transform: uppercase; }
.lugar__hora { margin: 2px 0; font-family: var(--titulo); font-style: italic; font-size: 1.6rem; color: var(--acento); }
.lugar__nombre { margin: 0; font-weight: 600; font-size: 1.08rem; }
.lugar__dir { margin: 2px 0 0; max-width: 20em; font-size: .98rem; color: var(--tinta-suave); }

/* Álbum con esquineros */
.album { position: relative; width: 100%; max-width: 330px; height: min(58vh, 420px); }
.album__foto {
  position: absolute;
  margin: 0;
  padding: 9px;
  background:
    linear-gradient(135deg, #2c313a 0 13px, transparent 13px) top left / 24px 24px no-repeat,
    linear-gradient(225deg, #2c313a 0 13px, transparent 13px) top right / 24px 24px no-repeat,
    linear-gradient(45deg, #2c313a 0 13px, transparent 13px) bottom left / 24px 24px no-repeat,
    linear-gradient(315deg, #2c313a 0 13px, transparent 13px) bottom right / 24px 24px no-repeat,
    #fffdf8;
  box-shadow: 0 10px 22px -10px rgba(0, 0, 0, .5);
}
.album__foto img { display: block; width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }
.album__foto--1 { left: 0; top: 0; width: 56%; transform: rotate(-5deg); }
.album__foto--2 { right: 0; top: 18%; width: 50%; transform: rotate(4deg); z-index: 2; }
.album__foto--3 { left: 16%; bottom: 0; width: 52%; transform: rotate(-1.5deg); z-index: 3; }

/* Detalles */
.detalle { display: flex; flex-direction: column; align-items: center; }
.detalle__t { margin: 0; font-family: var(--caps); font-weight: 500; font-size: .74rem; letter-spacing: .3em; text-transform: uppercase; color: var(--acento); }
.detalle__grande { margin: 4px 0 0; font-family: var(--titulo); font-style: italic; font-size: 1.9rem; color: var(--azul); }
.detalle__texto { margin: 6px 0 0; max-width: 20em; font-style: italic; font-size: 1.05rem; line-height: 1.5; color: var(--tinta-suave); }
.paleta { list-style: none; display: flex; gap: 10px; margin: 12px 0 4px; padding: 0; }
.paleta li { padding: 2px; border-radius: 50%; border: 1px solid rgba(111, 135, 163, .5); }
.paleta svg { display: block; width: 32px; height: 32px; }
.separador { margin: 20px 0; font-size: 1.3rem; color: var(--acento); }

/* Carta de confirmación */
.carta { display: flex; flex-direction: column; align-items: center; max-width: 21em; }
.carta__saludo { margin: 0; font-family: var(--titulo); font-style: italic; font-size: 1.45rem; color: var(--azul); }
.carta__texto { margin: 10px 0 4px; font-style: italic; font-size: 1.12rem; line-height: 1.55; }
.carta__antes { margin: 12px 0 0; font-size: .95rem; color: var(--tinta-suave); }
.carta__firma-t { margin: 22px 0 0; font-style: italic; font-size: 1rem; color: var(--tinta-suave); }
.carta__firma { margin: 0; font-family: var(--titulo); font-style: italic; font-size: 1.9rem; color: var(--azul); }
.rubrica { width: 200px; height: 34px; }
.rubrica path { fill: none; stroke: var(--acento); stroke-width: 1.4; stroke-linecap: round; stroke-dasharray: 1; stroke-dashoffset: 1; }

/* Fin */
.pagina--fin { gap: 6px; }
.pagina--fin .corona { position: relative; width: min(52%, 190px); height: auto; aspect-ratio: 1; }
.fin__monograma { margin: calc(min(52%, 190px) * -.62) 0 calc(min(52%, 190px) * .45); font-family: var(--caps); font-size: 1.3rem; letter-spacing: .3em; padding-left: .3em; color: var(--azul); }
.fin__t { margin: 0; font-family: var(--titulo); font-style: italic; font-size: 1.6rem; color: var(--azul); }
.fin__d { margin: 0 0 8px; font-style: italic; font-size: 1.15rem; color: var(--tinta-suave); }
.fin__credito { margin: 26px 0 0; font-style: italic; font-size: .85rem; color: var(--tinta-suave); }
.fin__marca { text-decoration: underline; text-underline-offset: 3px; text-decoration-color: var(--acento); }

/* Animaciones al llegar a cada página (primera vez) */
.hoja:not(.vista) .historia__item,
.hoja:not(.vista) .album__foto,
.hoja:not(.vista) .lugar,
.hoja:not(.vista) .portada__retrato,
.hoja:not(.vista) .portada__nombres { opacity: 0; }
.hoja.anima .historia__item { animation: subir .8s cubic-bezier(.2, .7, .2, 1) both; }
.hoja.anima .historia__item:nth-child(2) { animation-delay: .35s; }
.hoja.anima .historia__item:nth-child(3) { animation-delay: .7s; }
.hoja.anima .historia__item:nth-child(4) { animation-delay: 1.05s; }
.hoja.anima .lugar { animation: subir .8s .2s cubic-bezier(.2, .7, .2, 1) both; }
.hoja.anima .lugar + .lugar { animation-delay: .55s; }
.hoja.anima .portada__retrato { animation: aparecerZoom 1.2s .3s cubic-bezier(.2, .7, .2, 1) both; }
.hoja.anima .portada__nombres { animation: subir 1s .8s cubic-bezier(.2, .7, .2, 1) both; }
.hoja.anima .album__foto { animation: soltar .9s cubic-bezier(.3, 1.3, .5, 1) both; }
.hoja.anima .album__foto--2 { animation-delay: .25s; }
.hoja.anima .album__foto--3 { animation-delay: .5s; }
.hoja.anima .circulo path,
.hoja.anima .rubrica path { animation: trazar 1.3s .6s cubic-bezier(.5, 0, .3, 1) forwards; }
@keyframes subir { from { opacity: 0; transform: translateY(16px); } }
@keyframes aparecerZoom { from { opacity: 0; transform: scale(.9) rotate(-6deg); } }
@keyframes soltar { from { opacity: 0; translate: 0 -30px; scale: 1.1; } }
@keyframes trazar { to { stroke-dashoffset: 0; } }

/* ---------- Abrir, pista y navegación ---------- */
.mesa__abrir {
  all: unset;
  position: absolute;
  left: 50%;
  bottom: calc(env(safe-area-inset-bottom) + 7vh);
  transform: translateX(-50%);
  padding: 10px 18px;
  font-family: var(--caps);
  font-size: .68rem;
  letter-spacing: .36em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--plata-plano);
  cursor: pointer;
  animation: latido 2.6s ease-in-out infinite;
  transition: opacity .5s;
}
.mesa__abrir:focus-visible { outline: 1px solid var(--plata-plano); outline-offset: 4px; }
.mesa.abierta .mesa__abrir { opacity: 0; pointer-events: none; animation: none; }
@keyframes latido { 0%, 100% { opacity: .4; } 50% { opacity: 1; } }

.pista {
  position: absolute;
  left: 50%;
  bottom: calc(env(safe-area-inset-bottom) + 96px);
  transform: translateX(-50%);
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 10px 18px;
  border-radius: 999px;
  background: rgba(18, 26, 40, .88);
  color: var(--papel);
  font-family: var(--caps);
  font-size: .6rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  white-space: nowrap;
  box-shadow: 0 10px 24px rgba(0, 0, 0, .4);
  animation: aparecerPista .6s ease both;
  pointer-events: none;
}
.pista__mano { width: 18px; height: 18px; border-radius: 50%; background: var(--papel); box-shadow: 0 0 0 4px rgba(248, 244, 236, .25); animation: deslizar 1.6s ease-in-out infinite; }
@keyframes deslizar { 0% { transform: translateX(14px); opacity: 0; } 30% { opacity: 1; } 100% { transform: translateX(-14px); opacity: 0; } }
@keyframes aparecerPista { from { opacity: 0; transform: translate(-50%, 10px); } }

.lector {
  position: fixed;
  left: 50%;
  bottom: calc(env(safe-area-inset-bottom) + 12px);
  transform: translateX(-50%);
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px;
  border-radius: 999px;
  background: rgba(12, 17, 25, .82);
  box-shadow: 0 10px 24px rgba(0, 0, 0, .45), inset 0 0 0 1px rgba(207, 214, 220, .2);
  animation: aparecerPista .6s ease both;
}
.lector__btn {
  all: unset;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-family: var(--titulo);
  font-size: 1.7rem;
  line-height: 1;
  color: var(--plata-plano);
  cursor: pointer;
  transition: background-color .2s, opacity .2s;
}
.lector__btn:hover { background: rgba(255, 255, 255, .08); }
.lector__btn:focus-visible { outline: 1px solid var(--plata-plano); }
.lector__btn[disabled] { opacity: .25; cursor: default; }
.lector__puntos { display: flex; align-items: center; gap: 6px; padding: 0 6px; }
.lector__puntos i { width: 6px; height: 6px; border-radius: 3px; background: rgba(207, 214, 220, .35); transition: width .3s, background-color .3s; }
.lector__puntos i.activo { width: 18px; background: var(--plata-plano); }

.btn-musica { background: rgba(12, 17, 25, .85); border: 1px solid rgba(207, 214, 220, .4); color: var(--plata-plano); bottom: calc(env(safe-area-inset-bottom) + 76px); }

@media (max-height: 680px) {
  .pagina { padding-top: 22px; padding-bottom: 40px; }
  .titulo-pag { margin-bottom: 12px; font-size: 1.7rem; }
  .portada__retrato { width: min(52%, 200px); }
  .album { height: 50vh; }
}

@media (prefers-reduced-motion: reduce) {
  .libro, .hoja { transition-duration: .35s; }
  .libro.cerrado, .cinta, .mesa__abrir, .pista__mano, .tapa__iniciales, .tapa__titulo, .tapa__fecha { animation: none !important; }
}