/* ==========================================================================
   Un Platón en tu vida · hoja de estilos (v2)
   Paleta y tipografías de la guía de marca. Secciones a sangre (de borde a
   borde) que alternan la noche de la caverna y el barro de la vasija; el oro
   queda para la Idea: botones principales y destellos.
   ========================================================================== */

:root {
  --noche: #121c33;
  --noche-2: #1a2744;
  --noche-3: #0c1426;
  --terracota: #c76f3c;
  --terracota-2: #b8622f;
  --barniz: #17130f;
  --oro: #e0b45a;
  --oro-2: #f0c977;
  --pergamino: #f2e9d8;
  --gris: #b3ae9f;
  --linea: rgba(242, 233, 216, .14);

  --display: "Cormorant Garamond", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --texto: "EB Garamond", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;

  --max: 1320px;
  --gutter: clamp(20px, 5vw, 72px);
  --cab: 72px;
  --radio: 4px;
  --sombra: 0 30px 60px -20px rgba(0, 0, 0, .55), 0 12px 24px -12px rgba(0, 0, 0, .5);
  --curva: cubic-bezier(.2, .7, .2, 1);

  --greca-barniz: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='28' height='22'%3E%3Cpath d='M0 18 H22 V4 H8 V13 H16 V9' fill='none' stroke='%2317130f' stroke-width='2'/%3E%3C/svg%3E");
  --greca-terracota: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='28' height='22'%3E%3Cpath d='M0 18 H22 V4 H8 V13 H16 V9' fill='none' stroke='%23c76f3c' stroke-width='2'/%3E%3C/svg%3E");
  --greca-oro: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='28' height='22'%3E%3Cpath d='M0 18 H22 V4 H8 V13 H16 V9' fill='none' stroke='%23e0b45a' stroke-width='2'/%3E%3C/svg%3E");

  color-scheme: dark;
}

/* --- Base ---------------------------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--cab) + 16px); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--noche);
  color: var(--pergamino);
  font-family: var(--texto);
  font-size: clamp(1.06rem, .98rem + .3vw, 1.2rem);
  line-height: 1.6;
  font-kerning: normal;
  font-variant-ligatures: common-ligatures;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
body.menu-abierto { overflow: hidden; }

img, svg, video { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: .2em; }
a:hover { color: var(--oro-2); }
p, h1, h2, h3, h4, ul, ol, figure, blockquote { margin: 0; }
ul[role="list"], ol[role="list"] { list-style: none; padding: 0; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--oro); outline-offset: 3px; border-radius: 2px; }
::selection { background: var(--oro); color: var(--barniz); }

h1, h2, h3 { font-family: var(--display); font-weight: 600; line-height: 1.04; letter-spacing: -.005em; text-wrap: balance; }
h2 { font-size: clamp(2.2rem, 1.5rem + 3vw, 3.9rem); }
h3 { font-size: clamp(1.7rem, 1.3rem + 1.4vw, 2.35rem); }
p { text-wrap: pretty; }
em { font-style: italic; }

[hidden] { display: none !important; }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.sr { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.nw { white-space: nowrap; }

.saltar { position: absolute; left: 12px; top: -60px; z-index: 100; background: var(--oro); color: var(--barniz); padding: 10px 16px; font-weight: 600; text-decoration: none; transition: top .2s; }
.saltar:focus { top: 12px; }

.wrap { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter); }

/* Rótulo pequeño en versalitas */
.eti {
  display: block; font-size: .78rem; letter-spacing: .24em; text-transform: uppercase; font-weight: 600;
  line-height: 1.6; color: var(--oro);
}
.eti::before { content: ""; display: inline-block; vertical-align: middle; width: 26px; height: 1px; margin-right: .8em; background: currentColor; opacity: .7; }
.eti--sin::before { display: none; }

.suave { color: var(--gris); }

/* --- Botones ------------------------------------------------------------- */

.btn {
  --bg: transparent; --fg: var(--pergamino); --bd: rgba(242, 233, 216, .45);
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: .6em;
  min-height: 52px; padding: .7em 1.5em;
  font-family: var(--texto); font-weight: 600; font-size: 1.02rem; line-height: 1.2; letter-spacing: .01em;
  color: var(--fg); background: var(--bg); border: 1.5px solid var(--bd); border-radius: 999px;
  text-decoration: none; cursor: pointer; isolation: isolate; overflow: hidden;
  transition: transform .25s var(--curva), box-shadow .25s var(--curva), background-color .25s, color .25s, border-color .25s;
}
.btn svg { width: 15px; height: 15px; flex: none; transition: transform .25s var(--curva); }
.btn:hover { color: var(--fg); transform: translateY(-2px); }
.btn:hover svg { transform: translate(2px, -2px); }
.btn:active { transform: translateY(0); }
.btn--oro { --bg: var(--oro); --fg: var(--barniz); --bd: var(--oro); box-shadow: 0 10px 30px -12px rgba(224, 180, 90, .6); }
.btn--oro:hover { --bg: var(--oro-2); --bd: var(--oro-2); box-shadow: 0 16px 36px -12px rgba(224, 180, 90, .75); }
.btn--linea:hover { --bd: var(--pergamino); background: rgba(242, 233, 216, .06); }
.btn--barniz { --bg: var(--barniz); --fg: var(--pergamino); --bd: var(--barniz); }
.btn--barniz:hover { --bg: #000; --fg: var(--oro-2); }

.enlace-flecha {
  display: inline-flex; align-items: center; gap: .45em; font-weight: 600; text-decoration: none;
  border-bottom: 1px solid currentColor; padding-bottom: 1px;
}
.enlace-flecha svg { width: 13px; height: 13px; transition: transform .25s var(--curva); }
.enlace-flecha:hover svg { transform: translateX(3px); }

.acciones { display: flex; flex-wrap: wrap; gap: 14px 18px; align-items: center; }

/* --- Cabecera ------------------------------------------------------------ */

.cabecera {
  position: sticky; top: 0; z-index: 50;
  height: var(--cab);
  background: rgba(18, 28, 51, 0);
  border-bottom: 1px solid transparent;
  transition: background-color .3s, border-color .3s, backdrop-filter .3s;
}
.cabecera.es-solida {
  background: rgba(12, 20, 38, .86);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  backdrop-filter: saturate(140%) blur(14px);
  border-bottom-color: var(--linea);
}
/* Con el menú abierto, sin desenfoque: si no, el panel fijo quedaría encerrado en la cabecera */
.menu-abierto .cabecera { background: var(--noche-3); -webkit-backdrop-filter: none; backdrop-filter: none; border-bottom-color: var(--linea); }
.cabecera .wrap { height: 100%; display: flex; align-items: center; gap: 28px; }
.marca { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; font-family: var(--display); font-weight: 600; font-size: 1.32rem; letter-spacing: .01em; white-space: nowrap; }
.marca svg { width: 40px; height: 40px; flex: none; transition: transform .5s var(--curva); }
.marca:hover { color: var(--pergamino); }
.marca:hover svg { transform: rotate(-8deg); }

.menu { margin-left: auto; display: flex; align-items: center; gap: 30px; }
.menu a { text-decoration: none; font-weight: 500; font-size: 1.02rem; position: relative; padding-block: 6px; }
.menu a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: var(--oro); transform: scaleX(0); transform-origin: left; transition: transform .3s var(--curva); }
.menu a:hover { color: var(--pergamino); }
.menu a:hover::after { transform: scaleX(1); }

.idiomas { display: flex; gap: 2px; padding: 3px; border: 1px solid var(--linea); border-radius: 999px; }
.idiomas a { text-decoration: none; font-size: .78rem; font-weight: 600; letter-spacing: .1em; padding: 5px 10px; border-radius: 999px; color: var(--gris); transition: color .2s, background-color .2s; }
.idiomas a:hover { color: var(--pergamino); }
.idiomas a[aria-current="page"] { background: var(--pergamino); color: var(--barniz); }

.idiomas--menu { display: none; }
.menu-boton { display: none; margin-left: auto; width: 46px; height: 46px; border: 1px solid var(--linea); border-radius: 999px; background: transparent; cursor: pointer; align-items: center; justify-content: center; }
.menu-boton span, .menu-boton span::before, .menu-boton span::after { display: block; width: 18px; height: 1.5px; background: var(--pergamino); position: relative; transition: transform .3s var(--curva), background-color .2s; }
.menu-boton span::before, .menu-boton span::after { content: ""; position: absolute; left: 0; }
.menu-boton span::before { top: -6px; }
.menu-boton span::after { top: 6px; }
.menu-abierto .menu-boton span { background: transparent; }
.menu-abierto .menu-boton span::before { transform: translateY(6px) rotate(45deg); }
.menu-abierto .menu-boton span::after { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 860px) {
  .menu-boton { display: inline-flex; }
  .cabecera .idiomas { margin-left: 0; }
  .menu {
    position: fixed; inset: var(--cab) 0 auto 0; height: calc(100dvh - var(--cab));
    flex-direction: column; align-items: flex-start; gap: 4px; margin: 0;
    padding: 28px var(--gutter) 40px;
    background: var(--noche-3); overflow-y: auto;
    opacity: 0; visibility: hidden; transform: translateY(-8px);
    transition: opacity .3s, transform .3s var(--curva), visibility 0s .3s;
  }
  .menu a { font-family: var(--display); font-size: 2.3rem; font-weight: 600; padding-block: 8px; width: 100%; border-bottom: 1px solid var(--linea); }
  .menu a::after { display: none; }
  .menu-abierto .menu { opacity: 1; visibility: visible; transform: none; transition: opacity .3s, transform .3s var(--curva); }
}
@media (max-width: 560px) {
  .cabecera .idiomas:not(.idiomas--menu) { display: none; }
  .menu .idiomas--menu { display: flex; margin-top: 24px; }
  .menu .idiomas--menu a { font-family: var(--texto); font-size: .9rem; width: auto; border: 0; padding: 8px 16px; }
}
@media (max-width: 420px) {
  .marca span { font-size: 1.12rem; }
  .marca svg { width: 34px; height: 34px; }
  .cabecera .wrap { gap: 12px; }
  .idiomas a { padding: 5px 7px; }
}

/* --- Hero ---------------------------------------------------------------- */

.hero {
  position: relative; isolation: isolate;
  margin-top: calc(var(--cab) * -1);
  padding-top: calc(var(--cab) + clamp(24px, 5vw, 64px));
  padding-bottom: clamp(48px, 7vw, 96px);
  background:
    radial-gradient(60% 70% at 78% 38%, rgba(224, 180, 90, .10), transparent 70%),
    radial-gradient(80% 60% at 10% 100%, rgba(199, 111, 60, .12), transparent 70%),
    var(--noche);
  overflow: hidden;
}
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: clamp(32px, 5vw, 80px); align-items: center; }
.hero__texto { display: grid; gap: 22px; justify-items: start; }
.hero h1 { font-size: clamp(3.4rem, 1.6rem + 7.4vw, 7.6rem); font-weight: 500; line-height: .92; letter-spacing: -.02em; }
.hero h1 em { color: var(--oro); font-weight: 500; display: inline-block; }
.hero .glosa-marca { font-style: italic; color: var(--gris); margin-top: -10px; }
.hero .lema { font-family: var(--display); font-style: italic; font-size: clamp(1.45rem, 1.1rem + 1.1vw, 2rem); line-height: 1.25; }
.hero__intro { max-width: 38ch; color: rgba(242, 233, 216, .86); }
.hero .acciones { margin-top: 8px; }

/* Escena del hero: un arco de terracota, como el hueco de una hornacina */
.arco { position: relative; justify-self: end; width: min(100%, 540px); }
.arco svg { width: 100%; height: auto; overflow: visible; filter: drop-shadow(0 40px 60px rgba(0, 0, 0, .45)); }
.arco__idea { transform-box: fill-box; transform-origin: center; animation: flota 6s ease-in-out infinite; }
.arco__brillo { transform-box: fill-box; transform-origin: center; animation: late 3.2s ease-in-out infinite; }
.arco__platon { transform-box: fill-box; transform-origin: 50% 100%; animation: balanceo 7s ease-in-out infinite; }
.arco__tu { transform-box: fill-box; transform-origin: 50% 100%; animation: balanceo 6s ease-in-out infinite reverse; }
.arco__movil { animation: parpadeo 4s ease-in-out infinite; }

@keyframes flota { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
@keyframes late { 0%, 100% { opacity: .55; transform: scale(1); } 50% { opacity: 1; transform: scale(1.12); } }
@keyframes balanceo { 0%, 100% { transform: rotate(0); } 50% { transform: rotate(.8deg); } }
@keyframes parpadeo { 0%, 100% { opacity: .9; } 50% { opacity: .5; } }

@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .arco { justify-self: center; width: min(88%, 380px); }
  .hero h1 { font-size: clamp(3.3rem, 2rem + 9vw, 5.4rem); }
}

/* --- Friso en movimiento --------------------------------------------------- */

.friso {
  position: relative; overflow: hidden;
  background: var(--terracota); color: var(--barniz);
  padding-block: 22px;
  border-block: 1px solid rgba(23, 19, 15, .4);
}
.friso::before, .friso::after { content: ""; position: absolute; left: 0; right: 0; height: 12px; background: var(--greca-barniz) repeat-x 0 0 / 15px 12px; opacity: .85; }
.friso::before { top: 6px; }
.friso::after { bottom: 6px; }
.friso__pista { display: flex; width: max-content; animation: desfila 48s linear infinite; padding-block: 14px; }
.friso:hover .friso__pista { animation-play-state: paused; }
.friso__grupo { display: flex; align-items: center; flex: none; }
.friso__item { display: inline-flex; align-items: center; gap: 22px; padding-inline: 22px; font-family: var(--display); font-weight: 600; font-style: italic; font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.4rem); white-space: nowrap; }
.friso__item svg { width: 26px; height: 26px; flex: none; }
@keyframes desfila { to { transform: translateX(-50%); } }

/* --- Secciones ------------------------------------------------------------ */

.seccion { padding-block: clamp(72px, 10vw, 140px); position: relative; }
.cabeza-seccion { display: grid; gap: 18px; max-width: 760px; margin-bottom: clamp(40px, 6vw, 80px); }
.cabeza-seccion .intro { color: rgba(242, 233, 216, .82); max-width: 56ch; }
.cabeza-seccion--centro { margin-inline: auto; text-align: center; justify-items: center; }
.cabeza-seccion--doble { max-width: none; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); align-items: end; column-gap: clamp(32px, 6vw, 96px); }
.cabeza-seccion--doble .eti { grid-column: 1 / -1; }
.cabeza-seccion--doble .intro { padding-bottom: .5em; }
@media (max-width: 860px) { .cabeza-seccion--doble { grid-template-columns: 1fr; } }

/* --- Los libros (filas editoriales) ---------------------------------------- */

.obras { display: grid; gap: clamp(56px, 8vw, 120px); }
.obra {
  --tinte: var(--terracota);
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(32px, 6vw, 96px); align-items: center;
}
.obra:nth-child(even) { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
.obra:nth-child(even) .obra__tapa { order: 2; }
.obra--cristianismo { --tinte: #c76f3c; }
.obra--consultor { --tinte: #4a7fe0; }
.obra--gato { --tinte: #e0b45a; }
.obra--silla { --tinte: #f2e9d8; }

.obra__tapa {
  position: relative; display: grid; place-items: center; aspect-ratio: 1 / 1.05; text-decoration: none;
  border-radius: 50% 50% var(--radio) var(--radio) / 34% 34% var(--radio) var(--radio);
  background:
    radial-gradient(closest-side, color-mix(in srgb, var(--tinte) 26%, transparent), transparent),
    linear-gradient(180deg, var(--noche-2), var(--noche-3));
  border: 1px solid var(--linea);
  overflow: hidden;
}
.obra__tapa::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 18px; background: var(--greca-terracota) repeat-x 0 0 / 23px 18px; opacity: .5; }

/* Libro en 3D */
.libro3d { perspective: 1400px; width: 58%; }
.libro3d { animation: flota-libro 8s ease-in-out infinite; animation-delay: var(--desfase, 0s); }
.libro3d__cuerpo {
  position: relative; transform-style: preserve-3d;
  transform: rotateY(calc(var(--giro, -22deg) + var(--px, 0deg))) rotateX(calc(4deg + var(--py, 0deg)));
  transition: transform 1.1s var(--curva);
}
.obra:nth-child(2) .libro3d { --desfase: -2s; }
.obra:nth-child(3) .libro3d { --desfase: -4s; }
.obra:nth-child(4) .libro3d { --desfase: -6s; }
@keyframes flota-libro { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }
.libro3d__cuerpo img { width: 100%; border-radius: 2px 4px 4px 2px; box-shadow: var(--sombra); }
.libro3d__cuerpo::before {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none; border-radius: 2px 4px 4px 2px;
  background: linear-gradient(90deg, rgba(0, 0, 0, .35) 0, rgba(255, 255, 255, .18) 2.5%, rgba(0, 0, 0, .12) 5%, transparent 9%, transparent 85%, rgba(255, 255, 255, .06) 100%);
}
.libro3d__cuerpo::after {
  content: ""; position: absolute; top: 2%; bottom: 2%; right: -14px; width: 14px;
  background: repeating-linear-gradient(180deg, #efe6d3 0 2px, #d8cdb6 2px 3px);
  transform: rotateY(90deg); transform-origin: left; border-radius: 0 2px 2px 0;
}
.obra__tapa:hover .libro3d__cuerpo, .obra__tapa:focus-visible .libro3d__cuerpo { --giro: -6deg; }

.obra__texto { display: grid; gap: 18px; justify-items: start; }
.obra__titulo { font-size: clamp(2.3rem, 1.5rem + 3vw, 3.8rem); }
.obra__titulo a { text-decoration: none; }
.obra__titulo a:hover { color: var(--oro-2); }
.obra__subtitulo { font-family: var(--display); font-style: italic; font-size: clamp(1.25rem, 1.05rem + .6vw, 1.55rem); color: var(--gris); line-height: 1.3; }
.obra__gancho {
  position: relative; padding-left: 22px; max-width: 48ch; color: rgba(242, 233, 216, .9);
  border-left: 2px solid var(--tinte);
}
.chip { display: inline-block; font-size: .74rem; letter-spacing: .16em; text-transform: uppercase; font-weight: 600; border: 1px solid rgba(224, 180, 90, .6); color: var(--oro); padding: 4px 12px; border-radius: 999px; }
.obra__glosa { color: var(--gris); font-style: italic; }
.obra .acciones { margin-top: 6px; }

@media (max-width: 860px) {
  .obra, .obra:nth-child(even) { grid-template-columns: 1fr; gap: 28px; }
  .obra:nth-child(even) .obra__tapa { order: 0; }
  .obra__tapa { aspect-ratio: 4 / 3.4; }
  .libro3d { width: 46%; }
}

/* --- Carrusel de ideas -------------------------------------------------------- */

.ideas { background: var(--noche-3); overflow: hidden; }
.ideas::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 22px; background: var(--greca-terracota) repeat-x 0 0 / 28px 22px; opacity: .45; }
.ideas .wrap { display: grid; gap: clamp(20px, 3vw, 36px); }
.ideas__cabeza { display: grid; justify-items: center; gap: 14px; text-align: center; }
.ideas__cabeza h2 { font-family: var(--texto); font-size: .82rem; }
.ideas__icono { width: 104px; height: 104px; }
.ideas__marco { position: relative; display: grid; gap: clamp(24px, 3vw, 40px); }

.ideas__pista {
  display: flex; overflow-x: auto; overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory; scroll-behavior: smooth; scrollbar-width: none;
  border-radius: 8px;
}
.ideas__pista::-webkit-scrollbar { display: none; }
.ideas__pista:focus-visible { outline-offset: 8px; }
@media (prefers-reduced-motion: reduce) { .ideas__pista { scroll-behavior: auto; } }

.idea { flex: 0 0 100%; scroll-snap-align: center; scroll-snap-stop: always; display: grid; justify-items: center; align-content: center; gap: 26px; padding-inline: clamp(4px, 6vw, 96px); text-align: center; min-height: clamp(220px, 26vw, 330px); }
.idea blockquote { margin: 0; width: 100%; }
.idea blockquote p {
  max-width: 21ch; margin-inline: auto;
  font-family: var(--display); font-style: italic; font-weight: 500;
  font-size: clamp(2rem, 1.15rem + 3.6vw, 4.4rem); line-height: 1.08; letter-spacing: -.01em; text-wrap: balance;
}
.idea blockquote p::before { content: "«"; color: var(--oro); }
.idea blockquote p::after { content: "»"; color: var(--oro); }
:lang(en) .idea blockquote p::before { content: "“"; }
:lang(en) .idea blockquote p::after { content: "”"; }
.idea blockquote, .idea figcaption { transition: opacity 1s var(--curva), transform 1s var(--curva), filter 1s var(--curva); }
.idea[aria-hidden="true"] blockquote { opacity: .12; transform: scale(.96); filter: blur(2px); }
.idea[aria-hidden="true"] figcaption { opacity: 0; transform: translateY(8px); }
.idea figcaption { font-size: .98rem; color: var(--gris); letter-spacing: .03em; }
.idea figcaption a { color: var(--pergamino); }
.idea figcaption a:hover { color: var(--oro-2); }

.ideas__controles { display: flex; align-items: center; justify-content: center; gap: 22px; }
.ideas__flecha {
  display: inline-grid; place-items: center; width: 52px; height: 52px; border-radius: 999px; cursor: pointer;
  border: 1.5px solid rgba(242, 233, 216, .35); background: transparent; color: var(--pergamino);
  transition: border-color .25s, background-color .25s, color .25s, transform .25s var(--curva);
}
.ideas__flecha svg { width: 18px; height: 18px; }
.ideas__flecha:hover { border-color: var(--oro); color: var(--oro); transform: translateY(-2px); }
.ideas__puntos { display: flex; align-items: center; gap: 4px; }
.ideas__punto { position: relative; width: 28px; height: 28px; padding: 0; border: 0; background: transparent; cursor: pointer; }
.ideas__punto::before { content: ""; position: absolute; inset: 0; margin: auto; width: 8px; height: 8px; border-radius: 999px; background: rgba(242, 233, 216, .3); transition: width .35s var(--curva), background-color .25s; }
.ideas__punto:hover::before { background: rgba(242, 233, 216, .7); }
.ideas__punto[aria-current="true"]::before { width: 24px; background: var(--oro); }

/* Barra de progreso del paso automático */
.ideas__marco::after { content: ""; position: absolute; left: 50%; bottom: -14px; width: 120px; height: 2px; transform: translateX(-50%) scaleX(var(--progreso, 0)); transform-origin: left; background: rgba(224, 180, 90, .55); border-radius: 2px; }
@media (prefers-reduced-motion: reduce) { .ideas__marco::after { display: none; } }

.redes { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.redes__lista { display: flex; gap: 10px; }
.redes a { display: inline-grid; place-items: center; width: 44px; height: 44px; border-radius: 999px; border: 1.5px solid currentColor; transition: background-color .2s, color .2s; }
.redes a svg { width: 20px; height: 20px; }

/* --- Contacto ---------------------------------------------------------------- */

.contacto .wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 96px); align-items: end; }
.contacto__texto { display: grid; gap: 18px; justify-items: start; }
.contacto__texto p { max-width: 44ch; color: rgba(242, 233, 216, .85); }
.correo-caja {
  display: grid; gap: 18px; padding: clamp(24px, 4vw, 44px);
  border: 1px solid var(--linea); border-radius: 20px;
  background: linear-gradient(160deg, var(--noche-2), var(--noche));
}
.correo { font-family: var(--display); font-weight: 600; font-size: clamp(1.3rem, .9rem + 1.5vw, 2.1rem); color: var(--oro); text-decoration: none; overflow-wrap: anywhere; line-height: 1.15; }
.correo:hover { color: var(--oro-2); }
.copiar { justify-self: start; display: inline-flex; align-items: center; gap: 8px; padding: 8px 16px; border: 1px solid var(--linea); border-radius: 999px; background: transparent; cursor: pointer; font-size: .92rem; font-weight: 600; transition: border-color .2s, color .2s; }
.copiar svg { width: 16px; height: 16px; }
.copiar:hover { border-color: var(--oro); color: var(--oro); }
@media (max-width: 860px) { .contacto .wrap { grid-template-columns: 1fr; } }

/* --- Pie ------------------------------------------------------------------- */

.pie { position: relative; background: var(--noche-3); padding-block: clamp(64px, 8vw, 100px) 40px; font-size: .98rem; }
.pie::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 22px; background: var(--greca-oro) repeat-x 0 0 / 28px 22px; opacity: .55; }
.pie .wrap { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 40px; }
.pie__marca { display: grid; gap: 14px; align-content: start; }
.pie__marca p { color: var(--gris); max-width: 34ch; }
.pie__lema { font-family: var(--display); font-style: italic; font-size: 1.5rem !important; color: var(--pergamino) !important; line-height: 1.2; }
.pie__titulo { font-size: .76rem; letter-spacing: .22em; text-transform: uppercase; color: var(--oro); font-weight: 600; margin-bottom: 14px; }
.pie ul { list-style: none; padding: 0; display: grid; gap: 8px; }
.pie a { text-decoration: none; color: rgba(242, 233, 216, .86); }
.pie a:hover { color: var(--oro-2); }
.pie .redes { margin-top: 18px; }
.pie__base { grid-column: 1 / -1; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; padding-top: 28px; margin-top: 12px; border-top: 1px solid var(--linea); color: var(--gris); font-size: .9rem; }
@media (max-width: 860px) { .pie .wrap { grid-template-columns: 1fr 1fr; } .pie__marca { grid-column: 1 / -1; } }
@media (max-width: 480px) { .pie .wrap { grid-template-columns: 1fr; } }

/* --- Página de libro ---------------------------------------------------------- */

.ficha-hero {
  --tinte: var(--terracota);
  position: relative; isolation: isolate;
  margin-top: calc(var(--cab) * -1);
  padding-top: calc(var(--cab) + 28px);
  padding-bottom: clamp(48px, 6vw, 80px);
  background: radial-gradient(60% 70% at 20% 28%, color-mix(in srgb, var(--tinte) var(--fuerza, 18%), transparent), transparent 70%), var(--noche);
}
.ficha-hero.obra--cristianismo { --tinte: #c76f3c; }
.ficha-hero.obra--consultor { --tinte: #4a7fe0; }
.ficha-hero.obra--gato { --tinte: #e0b45a; }
.ficha-hero.obra--silla { --tinte: #f2e9d8; --fuerza: 8%; }

.migas ol { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; font-size: .9rem; color: var(--gris); margin-bottom: clamp(28px, 4vw, 48px); }
.migas li + li::before { content: "/"; margin-right: 6px; opacity: .5; }
.migas a { color: var(--gris); }
.migas a:hover { color: var(--pergamino); }

.ficha { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(36px, 6vw, 96px); align-items: start; }
.ficha__tapa { position: sticky; top: calc(var(--cab) + 32px); display: grid; justify-items: center; gap: 22px; }
.ficha__tapa .libro3d { width: min(100%, 400px); }
.ficha__tapa .libro3d__cuerpo { --giro: -14deg; }
.ficha__tapa:hover .libro3d__cuerpo { --giro: -4deg; }

.ficha__texto { display: grid; gap: clamp(36px, 5vw, 56px); min-width: 0; }
.ficha__cabeza { display: grid; gap: 14px; justify-items: start; }
.ficha__cabeza h1 { font-size: clamp(2.8rem, 1.6rem + 5vw, 5.6rem); font-weight: 600; line-height: .98; }
.ficha__cabeza .subtitulo { font-family: var(--display); font-style: italic; font-size: clamp(1.4rem, 1.1rem + 1vw, 2rem); color: rgba(242, 233, 216, .85); line-height: 1.25; }
.ficha__cabeza .autor { color: var(--gris); letter-spacing: .02em; }
.ficha__cabeza .glosa { color: var(--gris); font-style: italic; }
.gancho-grande { font-family: var(--display); font-size: clamp(1.4rem, 1.15rem + .9vw, 1.85rem); line-height: 1.3; padding-left: 22px; border-left: 2px solid var(--tinte); max-width: 40ch; }

.comprar { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 22px; }
.comprar .nota { flex: 1 1 260px; max-width: 46ch; line-height: 1.45; }
.comprar .nota { color: var(--gris); font-size: .95rem; }

.bloque { display: grid; gap: 22px; }
.bloque h2 { font-size: clamp(2rem, 1.5rem + 2vw, 3rem); display: flex; align-items: center; gap: 16px; }
.bloque h2::after { content: ""; flex: 1; height: 1px; background: var(--linea); }
.prosa { display: grid; gap: 1.1em; max-width: 66ch; }
.prosa p { color: rgba(242, 233, 216, .9); }
.prosa .entrada { font-family: var(--display); font-size: 1.6rem; line-height: 1.3; color: var(--pergamino); font-style: italic; }
.prosa > p:not(.entrada):first-of-type::first-letter { float: left; font-family: var(--display); font-size: 4.4em; line-height: .78; font-weight: 600; color: var(--oro); padding: .06em .1em 0 0; }

.tres { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; padding: 0; list-style: none; counter-reset: tres; }
.tres li { display: grid; gap: 8px; align-content: start; padding: 22px; border-radius: 16px; border: 1px solid var(--linea); background: rgba(26, 39, 68, .55); }
.tres li::before { counter-increment: tres; content: counter(tres, upper-roman); font-family: var(--display); font-weight: 700; font-size: 1.6rem; color: var(--oro); line-height: 1; }
.tres b { font-family: var(--display); font-size: 1.35rem; line-height: 1.15; }
.tres span { color: rgba(242, 233, 216, .82); font-size: 1rem; line-height: 1.5; }
@media (max-width: 680px) { .tres { grid-template-columns: 1fr; } }

.indice { display: grid; gap: 10px; }
.indice details { border: 1px solid var(--linea); border-radius: 14px; background: rgba(26, 39, 68, .4); overflow: hidden; }
.indice summary { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 22px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; font-size: .8rem; color: var(--oro); }
.indice summary::-webkit-details-marker { display: none; }
.indice summary::after { content: ""; width: 10px; height: 10px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(45deg) translateY(-3px); transition: transform .3s var(--curva); flex: none; }
.indice details[open] summary::after { transform: rotate(-135deg) translateX(-3px); }
.indice summary:hover { background: rgba(224, 180, 90, .05); }
.indice ol { list-style: none; padding: 0 22px 8px; margin: 0; }
.cap { display: grid; grid-template-columns: 44px 1fr; gap: 14px; padding-block: 14px; border-top: 1px solid var(--linea); }
.cap .num { font-family: var(--display); font-weight: 700; font-size: 1.4rem; line-height: 1.2; color: var(--terracota); }
.cap b { display: block; font-family: var(--display); font-size: 1.28rem; line-height: 1.2; margin-bottom: 2px; }
.cap span:not(.num) { color: rgba(242, 233, 216, .78); font-size: 1rem; line-height: 1.5; }

.cierre-compra {
  display: grid; grid-template-columns: auto 1fr; gap: 24px; align-items: center;
  padding: clamp(24px, 4vw, 40px); border-radius: 22px;
  background: linear-gradient(135deg, var(--terracota), var(--terracota-2)); color: var(--barniz);
}
.cierre-compra img { width: 92px; border-radius: 2px; box-shadow: 0 16px 30px -12px rgba(0, 0, 0, .55); }
.cierre-compra p { font-family: var(--display); font-size: clamp(1.4rem, 1.1rem + 1vw, 1.9rem); line-height: 1.2; font-weight: 600; margin-bottom: 14px; }
@media (max-width: 520px) { .cierre-compra { grid-template-columns: 1fr; } .cierre-compra img { display: none; } }

@media (max-width: 860px) {
  .ficha { grid-template-columns: 1fr; }
  .ficha__tapa { position: static; }
  .ficha__tapa .libro3d { width: min(62%, 300px); }
}

/* Barra de compra fija en móvil */
.barra-compra {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
  display: flex; align-items: center; gap: 14px; justify-content: space-between;
  padding: 12px var(--gutter) calc(12px + env(safe-area-inset-bottom, 0px));
  background: rgba(12, 20, 38, .94); border-top: 1px solid var(--linea);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  transform: translateY(110%); transition: transform .35s var(--curva);
}
.barra-compra.visible { transform: none; }
.barra-compra b { font-family: var(--display); font-size: 1.15rem; line-height: 1.15; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.barra-compra .btn { min-height: 46px; padding: .55em 1.1em; flex: none; }
@media (min-width: 861px) { .barra-compra { display: none; } }

/* Otros libros */
.otros { padding-block: clamp(64px, 8vw, 110px); background: var(--noche-3); }
.otros__lista { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(16px, 2.4vw, 32px); }
.otro { display: grid; grid-template-columns: 96px 1fr; gap: 18px; align-items: center; padding: 18px; border-radius: 18px; border: 1px solid var(--linea); text-decoration: none; background: rgba(26, 39, 68, .35); transition: transform .35s var(--curva), border-color .35s, background-color .35s; }
.otro:hover { transform: translateY(-4px); border-color: rgba(224, 180, 90, .5); background: rgba(26, 39, 68, .7); color: var(--pergamino); }
.otro img { border-radius: 2px; box-shadow: 0 14px 26px -12px rgba(0, 0, 0, .6); }
.otro b { display: block; font-family: var(--display); font-size: 1.35rem; line-height: 1.15; margin-bottom: 6px; }
.otro span span { color: var(--gris); font-size: .95rem; line-height: 1.4; }
@media (max-width: 960px) { .otros__lista { grid-template-columns: 1fr; } }

/* --- Legal y 404 ------------------------------------------------------------- */

.legal { padding-block: clamp(56px, 8vw, 110px); }
.legal .prosa { margin-inline: auto; }
.legal h1 { font-size: clamp(2.6rem, 1.8rem + 3vw, 4.2rem); margin-bottom: .2em; }
.legal h2 { font-size: 1.8rem; margin-top: 1em; }
.legal .resumen { padding: 20px 22px; border-left: 2px solid var(--oro); background: rgba(26, 39, 68, .55); border-radius: 0 12px 12px 0; }

.error { min-height: calc(100svh - var(--cab) - 300px); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: clamp(32px, 6vw, 96px); align-items: center; padding-block: clamp(56px, 8vw, 110px); }
.error .arco { justify-self: center; width: min(100%, 360px); order: 0; }
.error__texto { display: grid; gap: 20px; justify-items: start; }
.error__texto h1 { font-size: clamp(2.8rem, 1.8rem + 4vw, 5rem); }
.error__otros { display: grid; gap: 6px; color: var(--gris); font-size: .95rem; margin-top: 10px; }
@media (max-width: 860px) { .error { grid-template-columns: 1fr; } }


/* --- Movimiento sereno ------------------------------------------------------- */

.arco { transform: translate3d(0, var(--paralaje, 0px), 0); }
.arco svg { transform: perspective(1200px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)); transition: transform 1.4s var(--curva); }
.polvo { position: absolute; inset: 0; z-index: 2; width: 100%; height: 100%; pointer-events: none; }
.arco__orbita { transform-box: view-box; transform-origin: 240px 250px; animation: gira 140s linear infinite; }
.arco__orbita--inversa { animation-duration: 190s; animation-direction: reverse; }
@keyframes gira { to { transform: rotate(360deg); } }

.hero::before {
  content: ""; position: absolute; z-index: -1; right: 4%; top: 6%; width: min(60vw, 820px); aspect-ratio: 1;
  background: radial-gradient(closest-side, rgba(224, 180, 90, .16), transparent 70%);
  animation: respira 12s ease-in-out infinite;
}
@keyframes respira { 0%, 100% { opacity: .55; transform: scale(.94); } 50% { opacity: 1; transform: scale(1.04); } }

@media (prefers-reduced-motion: no-preference) {
  .titulo-entrada .p { display: inline-block; animation: entra-palabra 1.3s var(--curva) both; animation-delay: calc(.15s + var(--i) * .13s); }
  @keyframes entra-palabra { from { opacity: 0; transform: translateY(.35em); filter: blur(8px); } to { opacity: 1; transform: none; filter: none; } }
  .js-anim .revelar .eti::before, .js-anim .revelar.eti::before { width: 0; transition: width 1.4s var(--curva) .35s; }
  .js-anim .revelar.visto .eti::before, .js-anim .revelar.visto.eti::before { width: 26px; }
}
@media (prefers-reduced-motion: reduce) {
  .libro3d, .arco__orbita, .hero::before { animation: none; }
  .arco, .arco svg { transform: none; }
  .polvo { display: none; }
}

/* --- Aparición al hacer scroll ----------------------------------------------
   Solo se activa si el script ha marcado <html class="js-anim">: sin JavaScript
   todo está visible desde el principio. */

@media (prefers-reduced-motion: no-preference) {
  .js-anim .revelar { opacity: 0; transform: translateY(26px); transition: opacity .9s var(--curva), transform .9s var(--curva); transition-delay: var(--retardo, 0s); }
  .js-anim .revelar.visto { opacity: 1; transform: none; }
  .js-anim .hero .revelar { transition-duration: 1.1s; }
}
@media (prefers-reduced-motion: reduce) {
  .friso__pista, .arco__idea, .arco__brillo, .arco__platon, .arco__tu, .arco__movil { animation: none; }
  .friso__grupo + .friso__grupo { display: none; }
}