/* ══════════════════════════════════════════════════════════
   HERO · PERCHERO DE FORMATOS
   Las ediciones cuelgan de una barra. Al pasar el cursor giran
   sobre su gancho; al elegir una, pasa al frente y se puede
   girar arrastrándola. Colores y tipografías de la marca.
   ══════════════════════════════════════════════════════════ */

.hero--rack {
  min-height: 100svh;
  padding: 6.2rem 0 3rem;
  background:
    radial-gradient(120% 70% at 70% 100%, rgba(195,146,72,.10), transparent 60%),
    var(--cream);
  display: block;
}
.hr-grid {
  display: grid;
  grid-template-columns: minmax(18rem, 25rem) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 4.5rem);
  align-items: center;
  max-width: 1440px;
  margin: 0 auto;
  padding-inline: clamp(1.25rem, 5vw, 5rem);
  min-height: calc(100svh - 9.2rem);
}
.hr-copy .hero-kicker { margin-bottom: 1.4rem; }
.hr-copy .hero-author { margin-bottom: 1.8rem; }
.hr-copy .hero-pull   { margin-bottom: 2rem; font-size: clamp(1.02rem, 1.35vw, 1.18rem); }
.hr-copy .hero-pull span { white-space: normal !important; }
.hr-copy .hero-title-main { font-size: clamp(2.8rem, 5.2vw, 4.9rem); }
.hr-links { display: flex; flex-wrap: wrap; gap: 1.2rem 1.6rem; align-items: center;
  opacity: 0; animation: fadeUp .8s ease .55s forwards; }
.hr-links .hero-social { margin-top: 0; }

/* ── Escenario ── */
.rk {
  --k: 1;                         /* escala de los objetos */
  --rail-y: 2.2rem;               /* altura de la barra dentro del escenario */
  position: relative;
  height: 40rem;
  user-select: none;
  -webkit-user-select: none;
  touch-action: pan-y;            /* deslizar en horizontal hace girar */
}

/* Barra metálica */
.rk-rail {
  position: absolute; left: 4%; right: 4%; top: var(--rail-y);
  height: 6px; border-radius: 3px;
  background: linear-gradient(to bottom, var(--gold3) 0%, var(--gold) 45%, var(--gold2) 100%);
  box-shadow: 0 2px 6px rgba(24,20,15,.16);
  transition: opacity .6s ease, filter .6s ease;
}
.rk-rail::before, .rk-rail::after {
  content: ''; position: absolute; top: -5px; width: 10px; height: 16px; border-radius: 3px;
  background: linear-gradient(to right, var(--gold2), var(--gold3), var(--gold2));
}
.rk-rail::before { left: -6px; }
.rk-rail::after  { right: -6px; }

/* Fila de objetos */
.rk-items {
  list-style: none; margin: 0; padding: 0;
  position: absolute; left: 7%; right: 7%; top: calc(var(--rail-y) - 4px);
  display: flex; justify-content: space-between; align-items: flex-start;
}
.rk-slot { flex: 0 0 auto; display: flex; justify-content: center; }

.rk-item {
  appearance: none; background: none; border: 0; padding: 0; margin: 0;
  cursor: pointer; color: inherit; font: inherit;
  display: flex; flex-direction: column; align-items: center;
  perspective: 1100px;
  position: relative;
  transition: filter .55s ease, opacity .55s ease;
}
.rk-item:focus-visible { outline: none; }
.rk-item:focus-visible .rk-label { color: var(--rust); text-decoration: underline; text-underline-offset: 4px; }

/* El conjunto que gira: gancho + pinza + objeto */
.rk-swing {
  display: flex; flex-direction: column; align-items: center;
  transform-style: preserve-3d;
  transform-origin: 50% 0;
  transform: translate3d(var(--tx, 0px), var(--ty, 0px), 0) scale(var(--sc, 1));
  transition: transform .75s cubic-bezier(.2,.75,.15,1);
  will-change: transform;
}
.rk.is-dragging .rk-swing { transition: none; }

.rk-hook {
  width: 22px; height: 30px; display: block;
  color: var(--ink2);
}
.rk-hook svg { display: block; width: 100%; height: 100%; }
.rk-clip {
  width: 30px; height: 11px; margin-top: -2px; margin-bottom: -5px; z-index: 2;
  border-radius: 2px 2px 3px 3px;
  background: linear-gradient(to bottom, var(--ink3), var(--ink));
  box-shadow: 0 1px 0 rgba(255,255,255,.18) inset;
  transform: translateZ(calc(var(--d) * var(--k) * .5px + 1px));
}

/* ── Objeto 3D ── */
.rk-obj {
  --W: calc(var(--w) * var(--k) * 1px);
  --H: calc(var(--h) * var(--k) * 1px);
  --D: calc(var(--d) * var(--k) * 1px);
  position: relative; width: var(--W); height: var(--H);
  transform-style: preserve-3d;
  transform: rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)) scale(var(--hs, 1));
}
.rk-obj .f {
  position: absolute; display: block; backface-visibility: hidden; -webkit-backface-visibility: hidden;
  overflow: hidden;
}
.rk-obj .f img { width: 100%; height: 100%; object-fit: cover; display: block; pointer-events: none; }
.f-front, .f-back { inset: 0; }
.f-front { transform: translateZ(calc(var(--D) / 2)); }
.f-back  { transform: rotateY(180deg) translateZ(calc(var(--D) / 2)); }
.f-spine, .f-edge {
  top: 0; height: var(--H); width: var(--D);
  left: calc(50% - var(--D) / 2);
}
.f-spine { transform: rotateY(-90deg) translateZ(calc(var(--W) / 2)); }
.f-edge  { transform: rotateY(90deg)  translateZ(calc(var(--W) / 2)); }
.f-top, .f-bot {
  left: 0; width: var(--W); height: var(--D);
  top: calc(50% - var(--D) / 2);
}
.f-top { transform: rotateX(90deg)  translateZ(calc(var(--H) / 2)); }
.f-bot { transform: rotateX(-90deg) translateZ(calc(var(--H) / 2)); }

/* Libro */
.rk-book .f-front { box-shadow: inset 3px 0 6px rgba(24,20,15,.18); }
.rk-book .f-front::after {        /* brillo de laminado */
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(105deg, rgba(255,255,255,0) 40%, rgba(255,255,255,.22) 50%, rgba(255,255,255,0) 60%);
  transform: translateX(var(--sheen, -60%)); transition: transform .5s ease;
}
.rk-book .f-spine { background: var(--ink); }
.rk-book .f-spine img { object-fit: fill; }
.rk-book .f-spine::after {        /* curvatura del lomo */
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to right, rgba(0,0,0,.35), rgba(255,255,255,.06) 45%, rgba(0,0,0,.3));
}
.rk-book .f-spine > span {
  writing-mode: vertical-rl;
  font-family: var(--ff-u); font-weight: 500; letter-spacing: .08em; white-space: nowrap;
  font-size: calc(var(--k) * 6.4px); color: var(--cream2);
  display: flex; align-items: center; gap: calc(var(--k) * 10px);
}
.rk-book .f-spine b { color: var(--gold); font-weight: 800; font-size: 1.7em; letter-spacing: 0; }
.rk-book .f-spine i { font-style: normal; color: var(--gold); }
.rk-book .f-edge, .rk-book .f-top, .rk-book .f-bot {
  background: repeating-linear-gradient(to right, #f3ecdc 0 1px, #e2d8c2 1px 2px);
}
.rk-book .f-top, .rk-book .f-bot {
  background: repeating-linear-gradient(to bottom, #f3ecdc 0 1px, #e2d8c2 1px 2px);
}
.rk-book .f-back { background: #dfe4e2; }
/* Tapa dura: cartón que sobresale del bloque de hojas */
.rk-hard .f-front, .rk-hard .f-back { outline: calc(var(--k) * 2px) solid #2a241d; outline-offset: calc(var(--k) * -2px); }
.rk-hard .f-spine { border-radius: 40% / 6%; }

/* Dispositivos */
.rk-dev .f-front {
  border-radius: calc(var(--k) * 11px);
  padding: calc(var(--k) * 9px) calc(var(--k) * 8px) calc(var(--k) * 16px);
  background: var(--white);
  box-shadow: inset 0 0 0 1px rgba(24,20,15,.14);
}
.rk-dev .f-front img { border-radius: calc(var(--k) * 2px); }
.rk-dev .f-back { border-radius: calc(var(--k) * 11px); background: linear-gradient(160deg, var(--cream2), var(--cream3)); }
.rk-dev .f-spine, .rk-dev .f-edge, .rk-dev .f-top, .rk-dev .f-bot { background: var(--cream3); }
.rk-kindle .f-front { background: var(--ink); box-shadow: inset 0 0 0 1px rgba(255,255,255,.08); }
.rk-kindle .f-front img { filter: grayscale(1) contrast(1.05) brightness(1.04); }
.rk-kindle .f-back { background: linear-gradient(160deg, var(--ink2), var(--ink)); }
.rk-kindle .f-spine, .rk-kindle .f-edge, .rk-kindle .f-top, .rk-kindle .f-bot { background: #0d0b08; }

/* Sombra en el piso */
.rk-shadow {
  display: block; width: calc(var(--w) * var(--k) * 1.1px); height: calc(var(--k) * 12px);
  margin-top: calc(var(--k) * 30px);
  background: radial-gradient(closest-side, rgba(24,20,15,.20), transparent);
  transform: scaleX(var(--shw, 1)); transition: transform .3s ease, opacity .5s ease;
}

.rk-label {
  margin-top: .55rem;
  font-family: var(--ff-u); font-weight: 500; font-size: .62rem; letter-spacing: .16em;
  text-transform: uppercase; color: var(--ink3); white-space: nowrap;
  transition: color .25s ease, opacity .4s ease;
}
.rk-item:hover .rk-label { color: var(--rust); }

.rk-hint {
  position: absolute; left: 0; right: 0; top: 23.5rem; margin: 0; text-align: center;
  font-family: var(--ff-s); font-style: italic; font-weight: 300;
  font-size: clamp(1.25rem, 2vw, 1.7rem); color: var(--ink2);
  transition: opacity .4s ease, transform .4s ease;
}
.rk-hint em { color: var(--rust); }

/* ── Estado abierto ── */
.rk.is-open .rk-rail { opacity: .35; filter: blur(2px); }
.rk.is-open .rk-item:not(.is-sel) { filter: blur(5px); opacity: .42; }
.rk.is-open .rk-item:not(.is-sel):hover { filter: blur(2px); opacity: .7; }
.rk.is-open .rk-label, .rk.is-open .rk-shadow { opacity: 0; }
.rk.is-open .rk-hint { opacity: 0; transform: translateY(8px); pointer-events: none; }
.rk-item.is-sel { z-index: 5; cursor: grab; }
.rk.is-dragging .rk-item.is-sel { cursor: grabbing; }

/* Panel de detalle — bajo el objeto elegido */
.rk-detail {
  position: absolute; left: 50%; top: 24.2rem; width: min(30rem, 100%);
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: .85rem; text-align: center;
  animation: rkIn .55s cubic-bezier(.2,.75,.15,1) both .12s;
}
.rk-detail[hidden] { display: none; }
@keyframes rkIn { from { opacity: 0; transform: translate(-50%, 12px); } to { opacity: 1; transform: translate(-50%, 0); } }

.rk-name {
  margin: 0; font-family: var(--ff-u); font-weight: 800; font-size: 1.05rem;
  letter-spacing: .1em; text-transform: uppercase; color: var(--ink);
}
.rk-spec { margin: -.55rem 0 0; font-size: .82rem; color: var(--ink3); }

/* Selector segmentado Portada / Contraportada */
.rk-seg {
  display: inline-flex; padding: 3px; border-radius: 999px;
  border: 1px solid var(--ink); background: var(--white);
}
.rk-seg button {
  appearance: none; border: 0; background: transparent; cursor: pointer;
  padding: .38rem 1rem; border-radius: 999px;
  font-family: var(--ff-u); font-size: .6rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink3); transition: background .25s, color .25s;
}
.rk-seg button[aria-pressed="true"] { background: var(--ink); color: var(--cream); }

/* Tiendas como talles */
.rk-lbl { font-family: var(--ff-u); font-size: .66rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink3); margin: 0; }
.rk-pills { display: flex; flex-wrap: wrap; justify-content: center; gap: .4rem; max-width: 27rem; }
.rk-pill {
  appearance: none; cursor: pointer; min-width: 2.6rem; height: 2rem; padding: 0 .7rem;
  border-radius: 999px; border: 1px solid rgba(24,20,15,.35); background: var(--white);
  font-family: var(--ff-u); font-size: .62rem; font-weight: 600; letter-spacing: .08em; color: var(--ink2);
  transition: border-color .2s, background .2s, color .2s, transform .15s;
}
.rk-pill:hover { border-color: var(--rust); color: var(--rust); transform: translateY(-1px); }
.rk-pill[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: var(--cream); }

.rk-cta {
  min-width: 17rem; justify-content: center; border-radius: 999px;
  padding: .95rem 1.8rem; font-size: .74rem; letter-spacing: .14em;
}
.rk-cta[aria-disabled="true"] {
  background: var(--cream3); color: var(--ink3); box-shadow: none; transform: none;
  cursor: not-allowed; pointer-events: none;
}
.rk-note { margin: -.2rem 0 0; font-size: .76rem; color: var(--ink3); max-width: 26rem; line-height: 1.55; }
.rk-more {
  appearance: none; background: none; border: 0; cursor: pointer; padding: .1rem 0;
  font-family: var(--ff-u); font-size: .58rem; font-weight: 600; letter-spacing: .16em; text-transform: uppercase;
  color: var(--ink2); border-bottom: 1px solid currentColor;
}
.rk-more:hover { color: var(--rust); }

/* Etiquetas colgantes (Argentina / Otro país) */
.rk-tags {
  position: absolute; top: calc(var(--rail-y) + 2px); left: calc(50% + var(--tag-x, 9.5rem));
  display: flex; gap: .7rem;
  animation: rkTag .6s cubic-bezier(.2,.75,.15,1) both .25s;
}
.rk-tags[hidden] { display: none; }
@keyframes rkTag { from { opacity: 0; transform: translateY(-14px) rotate(-6deg); } to { opacity: 1; transform: none; } }
.rk-tag {
  appearance: none; cursor: pointer; border: 0; padding: 0; background: none;
  display: flex; flex-direction: column; align-items: center;
  transform-origin: 50% 0; transition: transform .3s ease;
}
.rk-tag:hover { transform: rotate(-4deg); }
.rk-tag::before { content: ''; width: 1px; height: 2.4rem; background: var(--ink2); }
.rk-tag span {
  display: flex; align-items: center; justify-content: center;
  width: 2.3rem; height: 6.4rem; padding-top: .9rem; position: relative;
  clip-path: polygon(22% 0, 78% 0, 100% 10%, 100% 100%, 0 100%, 0 10%);
  background: var(--white); color: var(--ink2);
  box-shadow: inset 0 0 0 1px rgba(24,20,15,.18);
  writing-mode: vertical-rl;
  font-family: var(--ff-u); font-size: .55rem; font-weight: 700; letter-spacing: .2em; text-transform: uppercase;
}
.rk-tag span::before {           /* ojal */
  content: ''; position: absolute; top: .45rem; left: 50%; width: 6px; height: 6px; margin-left: -3px;
  border-radius: 50%; background: var(--cream); box-shadow: inset 0 0 0 1px rgba(24,20,15,.3);
}
.rk-tag[aria-pressed="true"] span { background: var(--ink); color: var(--gold3); }
.rk-tag:focus-visible span { outline: 2px solid var(--rust); outline-offset: 2px; }

.rk-back {
  position: absolute; left: 0; top: calc(var(--rail-y) + 1.6rem);
  appearance: none; background: none; border: 0; cursor: pointer; padding: .3rem 0;
  font-family: var(--ff-u); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: var(--ink2);
  border-bottom: 1px solid rgba(24,20,15,.3);
  animation: rkIn2 .5s ease both .2s;
}
.rk-back::before { content: '← '; }
.rk-back:hover { color: var(--rust); border-color: var(--rust); }
.rk-back[hidden] { display: none; }
@keyframes rkIn2 { from { opacity: 0; } to { opacity: 1; } }

.rk-pill:focus-visible, .rk-seg button:focus-visible, .rk-more:focus-visible, .rk-back:focus-visible {
  outline: 2px solid var(--rust); outline-offset: 2px;
}

.rk-nojs { position: absolute; left: 0; right: 0; top: 26rem; text-align: center; font-size: .86rem; }
.rk-nojs a { color: var(--rust); text-decoration: underline; }

/* ── Responsive ── */
@media (max-width: 1180px) {
  .rk { --k: .82; }
}
@media (max-width: 980px) {
  .hero--rack { padding-top: 5.4rem; }
  .hr-grid { grid-template-columns: 1fr; min-height: 0; gap: 1.2rem; }
  .hr-copy { text-align: left; }
  .hr-copy .hero-pull { display: none; }
  .hr-copy .hero-author { margin-bottom: 0; }
  .hr-links { display: none; }
  .rk { --k: .74; height: 37rem; }
  .rk-hint { top: 19.5rem; }
  .rk-detail { top: 19.4rem; }
}
@media (max-width: 600px) {
  .rk { --k: .44; --rail-y: 1.4rem; height: 35.5rem; }
  .rk-items { left: 3%; right: 3%; }
  .rk-rail { left: 0; right: 0; }
  .rk-label { font-size: .5rem; letter-spacing: .1em; }
  .rk-hint { top: 13rem; }
  .rk-detail { top: 17.4rem; }
  .rk-cta { min-width: 100%; }
  .rk-tags { --tag-x: 5.2rem; }
  .rk-tag span { width: 1.9rem; height: 5.2rem; font-size: .48rem; }
  .rk-tag::before { height: 1.6rem; }
  .rk-back { top: auto; bottom: 100%; }
  .hr-copy .hero-title-main { font-size: 2.6rem; }
}

@media (prefers-reduced-motion: reduce) {
  .rk-swing, .rk-obj, .rk-item, .rk-rail { transition: none !important; }
  .rk-detail, .rk-tags, .rk-back { animation: none; }
}