:root {
  --olive: #4a5944;
  --olive-700: #3a4636;
  --olive-900: #232b20;
  --cream: #f5f1e8;
  --cream-2: #ebe4d4;
  --gold: #c9a96a;
  --gold-soft: #e3cf9f;
  --ink: #26281f;
  --muted: #6d6f63;
  --wa: #25d366;
  --wa-dark: #128c4b;

  --topbar-h: 64px;
  --dock-h: 128px;
  --radius: 14px;
  --ease: cubic-bezier(.2, .7, .2, 1);
  --serif: "Cormorant Garamond", Georgia, serif;
  --sans: "Jost", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--cream);
  background:
    radial-gradient(120% 80% at 50% 0%, #48563f 0%, transparent 60%),
    radial-gradient(80% 60% at 50% 110%, #1a2118 0%, transparent 70%),
    var(--olive-900);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}
button { font: inherit; color: inherit; cursor: pointer; }
svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }

#snow { position: fixed; inset: 0; pointer-events: none; z-index: 0; opacity: .7; }

/* ---------- Loader ---------- */
.loader {
  position: fixed; inset: 0; z-index: 100;
  display: grid; place-content: center; justify-items: center; gap: 10px;
  background: var(--olive-900);
  transition: opacity .7s var(--ease), visibility .7s;
}
.loader.is-done { opacity: 0; visibility: hidden; }
.loader__brand { font-family: var(--serif); font-size: clamp(40px, 8vw, 72px); letter-spacing: .12em; color: var(--cream); animation: rise 1s var(--ease) both; }
.loader__sub { font-size: 13px; letter-spacing: .35em; text-transform: uppercase; color: var(--gold); animation: rise 1s .15s var(--ease) both; }
.loader__bar { width: 180px; height: 2px; margin-top: 18px; background: rgba(255,255,255,.12); border-radius: 2px; overflow: hidden; }
.loader__bar span { display: block; height: 100%; width: 0; background: var(--gold); transition: width .3s var(--ease); }
@keyframes rise { from { opacity: 0; transform: translateY(12px); } }

/* ---------- Top bar ---------- */
.topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 20;
  height: calc(var(--topbar-h) + env(safe-area-inset-top));
  padding: env(safe-area-inset-top) max(16px, env(safe-area-inset-right)) 0 max(16px, env(safe-area-inset-left));
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.brand { display: flex; align-items: baseline; gap: 12px; color: var(--cream); text-decoration: none; }
.brand__name { font-family: var(--serif); font-size: 26px; letter-spacing: .1em; }
.brand__tag { font-size: 11px; letter-spacing: .3em; text-transform: uppercase; color: var(--gold); }
.topbar__actions { display: flex; align-items: center; gap: 6px; }

.pill, .icon-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 40px; border-radius: 999px;
  border: 1px solid rgba(245,241,232,.18);
  background: rgba(245,241,232,.06);
  backdrop-filter: blur(8px);
  transition: background .2s, border-color .2s, transform .2s var(--ease);
}
.pill { padding: 0 16px 0 14px; font-size: 14px; letter-spacing: .02em; }
.icon-btn { width: 40px; padding: 0; }
.pill:hover, .icon-btn:hover { background: rgba(245,241,232,.14); border-color: rgba(245,241,232,.32); }
.pill:active, .icon-btn:active { transform: scale(.95); }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }

#btnSound .sound-off { display: none; }
#btnSound[aria-pressed="false"] .sound-on { display: none; }
#btnSound[aria-pressed="false"] .sound-off { display: inline; }

/* ---------- Stage / book ---------- */
.stage {
  position: fixed; z-index: 1;
  top: calc(var(--topbar-h) + env(safe-area-inset-top)); bottom: calc(var(--dock-h) + env(safe-area-inset-bottom)); left: 0; right: 0;
  touch-action: none;
  display: grid; place-items: center;
}
.book-wrap {
  position: relative;
  /* el ancho lo calcula app.js para que el libro quepa en pantalla */
  transition: transform .6s var(--ease);
}
.book-wrap::after {
  /* sombra suave bajo el libro */
  content: ""; position: absolute; left: 6%; right: 6%; bottom: -26px; height: 40px;
  background: radial-gradient(50% 50% at 50% 50%, rgba(0,0,0,.55), transparent 70%);
  filter: blur(6px); z-index: -1; pointer-events: none;
}
/* Portada cerrada: centrar el libro corriendo media página */
.book-wrap.is-cover-front { transform: translateX(-25%); }
.book-wrap.is-cover-back  { transform: translateX(25%); }
.book-wrap.is-cover-front::after { left: 53%; }
.book-wrap.is-cover-back::after  { right: 53%; }

/* page-flip fija min-width/min-height en línea; el tamaño lo controla fitBook() */
.book { margin: 0 auto; min-width: 0 !important; min-height: 0 !important; }
.page {
  background: var(--cream);
  overflow: hidden;
}
.page img {
  display: block; width: 100%; height: 100%;
  object-fit: contain; /* nunca recortar contenido de la página */
  user-select: none; -webkit-user-drag: none;
  pointer-events: none;
}
/* brillo de lomo para dar volumen */
.page.--left::after, .page.--right::after {
  content: ""; position: absolute; top: 0; bottom: 0; width: 8%; pointer-events: none;
}
.page.--left::after  { right: 0; background: linear-gradient(to left, rgba(0,0,0,.18), transparent); }
.page.--right::after { left: 0;  background: linear-gradient(to right, rgba(0,0,0,.14), transparent); }

.nav-arrow {
  position: absolute; top: 50%; z-index: 5;
  width: 52px; height: 52px; margin-top: -26px;
  display: grid; place-items: center;
  border-radius: 50%; border: 1px solid rgba(245,241,232,.2);
  background: rgba(35,43,32,.55); backdrop-filter: blur(6px);
  transition: opacity .3s, background .2s, transform .2s var(--ease);
}
.nav-arrow svg { width: 24px; height: 24px; }
.nav-arrow:hover { background: var(--olive); transform: scale(1.06); }
.nav-arrow[disabled] { opacity: 0; pointer-events: none; }
.nav-arrow--prev { left: max(16px, 2vw); }
.nav-arrow--next { right: max(16px, 2vw); }

.hint {
  position: absolute; left: 50%; bottom: 8px; transform: translateX(-50%);
  display: flex; align-items: center; gap: 10px;
  padding: 10px 18px; border-radius: 999px;
  background: rgba(20,26,18,.78); backdrop-filter: blur(6px);
  font-size: 13px; color: var(--cream); white-space: nowrap;
  pointer-events: none; opacity: 0; transition: opacity .6s;
}
.hint.is-on { opacity: 1; }
.hint svg { width: 28px; height: 28px; stroke: var(--gold); animation: swipe 1.6s ease-in-out infinite; }
@keyframes swipe { 0%,100% { transform: translateX(6px); } 50% { transform: translateX(-6px); } }

/* ---------- Dock ---------- */
.dock {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 20;
  min-height: var(--dock-h);
  padding: 8px 16px max(10px, env(safe-area-inset-bottom));
  display: flex; flex-direction: column; align-items: center; justify-content: flex-end; gap: 8px;
  pointer-events: none;
}
.dock > * { pointer-events: auto; }

.now {
  display: flex; align-items: center; gap: 14px;
  max-width: min(640px, calc(100vw - 32px));
  padding: 6px 6px 6px 18px;
  border-radius: 999px;
  background: rgba(245,241,232,.96);
  color: var(--ink);
  box-shadow: 0 10px 30px rgba(0,0,0,.3);
  animation: pop .45s var(--ease);
}
.now[hidden] { display: none; }
@keyframes pop { from { opacity: 0; transform: translateY(10px) scale(.97); } }
.now__info { display: flex; flex-direction: column; min-width: 0; line-height: 1.2; }
.now__label { font-size: 10px; letter-spacing: .22em; text-transform: uppercase; color: var(--muted); }
.now__items { font-family: var(--serif); font-size: 19px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.now__items b { font-family: var(--sans); font-size: 14px; font-weight: 500; color: var(--olive); }
.now__cta {
  flex: none; display: inline-flex; align-items: center; gap: 8px;
  height: 40px; padding: 0 16px 0 12px; border-radius: 999px;
  background: var(--wa); color: #fff; text-decoration: none; font-size: 14px; font-weight: 500;
  transition: background .2s, transform .2s var(--ease);
}
.now__cta svg { width: 20px; height: 20px; stroke: none; }
.now__cta:hover { background: var(--wa-dark); transform: translateY(-1px); }

.scrub { display: flex; align-items: center; gap: 12px; width: min(520px, calc(100vw - 120px)); margin-right: auto; margin-left: auto; }
.scrub__count { font-size: 13px; letter-spacing: .08em; color: var(--gold-soft); min-width: 64px; font-variant-numeric: tabular-nums; }
.scrub__zoom { width: 34px; height: 34px; border: 0; background: none; color: var(--cream); opacity: .8; display: grid; place-items: center; }
.scrub__zoom:hover { opacity: 1; }
input[type="range"] { -webkit-appearance: none; appearance: none; flex: 1; height: 24px; background: transparent; cursor: pointer; }
input[type="range"]::-webkit-slider-runnable-track { height: 2px; background: rgba(245,241,232,.22); border-radius: 2px; }
input[type="range"]::-moz-range-track { height: 2px; background: rgba(245,241,232,.22); border-radius: 2px; }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 16px; height: 16px; margin-top: -7px; border-radius: 50%; background: var(--gold); border: 3px solid var(--olive-900); box-shadow: 0 0 0 1px var(--gold); }
input[type="range"]::-moz-range-thumb { width: 12px; height: 12px; border-radius: 50%; background: var(--gold); border: 3px solid var(--olive-900); }

/* ---------- WhatsApp FAB ---------- */
.wa-fab {
  position: fixed; z-index: 30;
  right: max(18px, env(safe-area-inset-right)); bottom: 14px;
  display: flex; align-items: center; gap: 10px; text-decoration: none;
}
.wa-fab__btn {
  position: relative; width: 58px; height: 58px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--wa); color: #fff;
  box-shadow: 0 8px 24px rgba(37,211,102,.35), 0 4px 12px rgba(0,0,0,.3);
  transition: transform .25s var(--ease);
}
.wa-fab__btn svg { width: 32px; height: 32px; stroke: none; }
.wa-fab__btn::before {
  content: ""; position: absolute; inset: 0; border-radius: 50%;
  border: 2px solid var(--wa); animation: ring 2.4s ease-out infinite;
}
@keyframes ring { from { transform: scale(1); opacity: .8; } to { transform: scale(1.6); opacity: 0; } }
.wa-fab:hover .wa-fab__btn { transform: scale(1.07); }
.wa-fab__bubble {
  padding: 9px 14px; border-radius: 12px 12px 4px 12px;
  background: var(--cream); color: var(--ink); font-size: 14px;
  box-shadow: 0 6px 20px rgba(0,0,0,.25);
  opacity: 0; transform: translateX(8px); transition: opacity .4s, transform .4s var(--ease);
  pointer-events: none;
}
.wa-fab.show-bubble .wa-fab__bubble, .wa-fab:hover .wa-fab__bubble { opacity: 1; transform: none; }

/* ---------- Drawers ---------- */
.scrim { position: fixed; inset: 0; z-index: 40; background: rgba(10,14,9,.5); opacity: 0; visibility: hidden; transition: opacity .3s, visibility .3s; }
.scrim.is-on { opacity: 1; visibility: visible; transition: opacity .3s, visibility 0s; }
.drawer {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: 50;
  width: min(440px, 100vw);
  display: flex; flex-direction: column;
  background: var(--cream); color: var(--ink);
  box-shadow: -20px 0 50px rgba(0,0,0,.35);
  transform: translateX(105%); transition: transform .45s var(--ease);
}
.drawer--wide { width: min(620px, 100vw); }
.drawer.is-open { transform: none; }
.drawer__head { display: flex; align-items: center; justify-content: space-between; padding: 18px 20px 10px; }
.drawer__head h2 { margin: 0; font-family: var(--serif); font-weight: 500; font-size: 30px; color: var(--olive-700); }
.drawer .icon-btn { border-color: rgba(38,40,31,.15); background: transparent; color: var(--ink); }
.drawer .icon-btn:hover { background: var(--cream-2); }
.drawer__tools { padding: 4px 20px 12px; display: grid; gap: 12px; border-bottom: 1px solid var(--cream-2); }
.drawer__note { margin: 0; padding: 12px 20px max(16px, env(safe-area-inset-bottom)); font-size: 12px; color: var(--muted); border-top: 1px solid var(--cream-2); }

.search { display: flex; align-items: center; gap: 10px; height: 44px; padding: 0 14px; border-radius: 12px; background: #fff; border: 1px solid var(--cream-2); color: var(--muted); }
.search input { flex: 1; border: 0; outline: 0; background: transparent; font: inherit; font-size: 16px; color: var(--ink); }
.chips { display: flex; gap: 6px; overflow-x: auto; scrollbar-width: none; }
.chip { flex: none; height: 32px; padding: 0 14px; border-radius: 999px; border: 1px solid rgba(74,89,68,.3); background: transparent; font-size: 13px; color: var(--olive-700); transition: background .2s, color .2s; }
.chip.is-active { background: var(--olive); border-color: var(--olive); color: var(--cream); }
.budget { display: grid; gap: 2px; font-size: 13px; color: var(--muted); }
.budget strong { color: var(--olive-700); font-weight: 600; }
.budget input[type="range"]::-webkit-slider-runnable-track { background: var(--cream-2); }
.budget input[type="range"]::-moz-range-track { background: var(--cream-2); }
.budget input[type="range"]::-webkit-slider-thumb { border-color: var(--cream); background: var(--olive); box-shadow: 0 0 0 1px var(--olive); }
.sort { display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--muted); }
.sort select { font: inherit; font-size: 13px; color: var(--olive-700); border: 0; background: transparent; cursor: pointer; }

.plist { list-style: none; margin: 0; padding: 6px 12px; overflow-y: auto; flex: 1; overscroll-behavior: contain; }
.pitem {
  display: grid; grid-template-columns: 64px 1fr auto; gap: 14px; align-items: center;
  padding: 10px 8px; border-radius: 12px; cursor: pointer;
  transition: background .2s;
}
.pitem:hover { background: var(--cream-2); }
.pitem__thumb { width: 64px; height: 90px; border-radius: 6px; object-fit: cover; background: var(--cream-2); box-shadow: 0 2px 8px rgba(0,0,0,.12); }
.pitem__name { font-family: var(--serif); font-size: 21px; font-weight: 600; line-height: 1.1; color: var(--ink); }
.pitem__desc { margin-top: 2px; font-size: 12.5px; color: var(--muted); line-height: 1.35; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.pitem__meta { margin-top: 4px; display: flex; gap: 8px; align-items: center; font-size: 12px; color: var(--muted); }
.pitem__price { font-weight: 600; font-size: 15px; color: var(--olive); }
.pitem__wa {
  width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center;
  background: rgba(37,211,102,.12); color: var(--wa-dark); border: 0;
  transition: background .2s, color .2s;
}
.pitem__wa svg { width: 20px; height: 20px; stroke: none; }
.pitem__wa:hover { background: var(--wa); color: #fff; }
.plist__empty { padding: 40px 20px; text-align: center; color: var(--muted); }

.thumbs {
  padding: 8px 20px max(20px, env(safe-area-inset-bottom));
  overflow-y: auto; flex: 1;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 18px 14px;
}
.thumb { border: 0; padding: 0; background: none; text-align: center; color: var(--muted); font-size: 12px; }
.thumb img { display: block; width: 100%; aspect-ratio: 595/842; object-fit: cover; border-radius: 4px; box-shadow: 0 3px 12px rgba(0,0,0,.15); transition: transform .25s var(--ease), box-shadow .25s; margin-bottom: 6px; }
.thumb:hover img { transform: translateY(-3px); box-shadow: 0 8px 20px rgba(0,0,0,.2); }
.thumb.is-current img { outline: 3px solid var(--gold); outline-offset: 2px; }

/* ---------- Zoom ---------- */
.zoom { position: fixed; inset: 0; z-index: 60; background: rgba(12,16,11,.96); opacity: 0; visibility: hidden; transition: opacity .3s, visibility .3s; }
.zoom.is-open { opacity: 1; visibility: visible; transition: opacity .3s, visibility 0s; }
.zoom__view { position: absolute; inset: 0; overflow: hidden; touch-action: none; cursor: zoom-in; user-select: none; -webkit-user-select: none; }
.zoom__view.is-zoomed { cursor: grab; }
.zoom__view.is-zoomed:active { cursor: grabbing; }
.zoom__pages {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  padding: calc(env(safe-area-inset-top) + 64px) 12px calc(env(safe-area-inset-bottom) + 76px);
  transform-origin: 0 0; will-change: transform;
}
.zoom__pages.is-animating { transition: transform .3s var(--ease); }
.zoom__pages img { display: block; max-height: 100%; max-width: 100%; height: auto; width: auto; object-fit: contain; box-shadow: 0 20px 60px rgba(0,0,0,.5); pointer-events: auto; -webkit-user-drag: none; }
.zoom__pages.is-spread img { max-width: 50%; }
.zoom__close { position: absolute; top: calc(env(safe-area-inset-top) + 12px); right: 12px; width: 44px; height: 44px; background: rgba(35,43,32,.85); }
.zoom__bar {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 12px 16px calc(env(safe-area-inset-bottom) + 12px);
  display: flex; align-items: center; justify-content: center; gap: 14px;
  pointer-events: none;
}
.zoom__bar > * { pointer-events: auto; }
.zoom__tip { font-size: 13px; color: var(--cream); padding: 9px 14px; border-radius: 999px; background: rgba(20,26,18,.8); backdrop-filter: blur(6px); }
.zoom__bar .now__cta[hidden] { display: none; }
.zoom__bar .now__cta { box-shadow: 0 8px 24px rgba(0,0,0,.35); }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; top: calc(var(--topbar-h) + 10px); z-index: 70;
  transform: translate(-50%, -10px); opacity: 0;
  padding: 10px 18px; border-radius: 999px; background: var(--cream); color: var(--ink); font-size: 14px;
  box-shadow: 0 8px 24px rgba(0,0,0,.3); transition: opacity .3s, transform .3s var(--ease); pointer-events: none;
}
.toast.is-on { opacity: 1; transform: translate(-50%, 0); }

/* ---------- Responsive ---------- */
@media (max-width: 760px) {
  :root { --topbar-h: 56px; --dock-h: 116px; }
  .brand__name { font-size: 22px; }
  .brand__tag, .hide-mobile, .pill span { display: none; }
  .pill { width: 38px; padding: 0; }
  .pill, .icon-btn { height: 38px; }
  .icon-btn { width: 38px; }
  .topbar__actions { gap: 4px; }
  .nav-arrow { display: none; }
  .now { padding-left: 14px; gap: 10px; }
  .now__items { font-size: 17px; }
  .now { width: calc(100vw - 24px); justify-content: space-between; }
  .now__cta { height: 42px; padding: 0 14px 0 10px; }
  .zoom__pages.is-spread img { max-width: 50%; }
  .zoom__tip { display: none; }
  .wa-fab__bubble { display: none; }
  .wa-fab { bottom: max(10px, env(safe-area-inset-bottom)); right: 16px; }
  .wa-fab__btn { width: 50px; height: 50px; }
  .wa-fab__btn svg { width: 28px; height: 28px; }
  .scrub { width: auto; align-self: stretch; margin: 0 66px 0 0; min-height: 50px; }
}

/* celular en horizontal o pantallas muy bajas: más espacio para el libro */
@media (max-height: 520px) {
  :root { --topbar-h: 48px; --dock-h: 52px; }
  .now { display: none; }
  .brand__tag { display: none; }
  .wa-fab { bottom: max(6px, env(safe-area-inset-bottom)); }
  .wa-fab__btn { width: 44px; height: 44px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition-duration: .01ms !important; }
  #snow { display: none; }
}