/* ============================================================
   LA CASA DEL NÚMERO 48 — lacasadelnumero48.com
   Experiencia cinematográfica de venta · Samuel Rodrigues
   Paleta y tipografía hermanadas con samuelrodriguesautor.com
   ============================================================ */

:root {
  /* Paleta */
  --negro-profundo: #0F0D0A;
  --negro-tierra:   #1F1B16;
  --negro-cuero:    #2A241D;
  --crema-marfil:   #F2E8D5;
  --blanco-hueso:   #FAF5EC;
  --oro-antiguo:    #C49A4E;
  --oro-claro:      #D9B673;
  --oro-tenue:      rgba(196, 154, 78, 0.38);
  --marron-roble:   #5C4A32;
  --gris-piedra:    #9A9088;
  --rojo-brasa:     #8C3B2E;

  --font-display: "Cormorant Garamond", Georgia, serif;
  --font-body:    "Lora", Georgia, serif;
  --font-mono:    "JetBrains Mono", ui-monospace, Menlo, monospace;

  --fs-mega: clamp(4rem, 14vw, 13rem);
  --fs-hero: clamp(2.8rem, 9vw, 8rem);
  --fs-h1:   clamp(2.4rem, 6vw, 4.75rem);
  --fs-h2:   clamp(2rem, 4.2vw, 3.4rem);
  --fs-h3:   clamp(1.45rem, 2.5vw, 2.1rem);
  --fs-lead: clamp(1.15rem, 1.5vw, 1.45rem);
  --fs-body: 1.0625rem;
  --fs-small: 0.875rem;
  --fs-tiny: 0.75rem;
  --fs-micro: 0.7rem;

  --sp-xs:  clamp(0.6rem, 0.45rem + 0.6vw, 0.85rem);
  --sp-sm:  clamp(1rem,   0.7rem  + 1.1vw, 1.45rem);
  --sp-md:  clamp(1.5rem, 1rem    + 2vw,   2.25rem);
  --sp-lg:  clamp(2.4rem, 1.4rem  + 4vw,   3.75rem);
  --sp-xl:  clamp(3.4rem, 1.8rem  + 6.5vw, 6rem);
  --sp-2xl: clamp(4.5rem, 2.4rem  + 9vw,   8.5rem);
  --sp-3xl: clamp(6rem,   3rem    + 14vw,  13rem);

  --container:        90rem;
  --container-narrow: 60rem;
  --container-text:   45rem;

  --ease-cinema: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-snap:   cubic-bezier(0.23, 1, 0.32, 1);
  --radius-soft: 4px;

  --glass:        rgba(20, 17, 13, 0.55);
  --glass-strong: rgba(15, 13, 10, 0.82);
  --glass-border: rgba(196, 154, 78, 0.26);
  --glass-blur:   blur(16px) saturate(130%);
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  background: var(--negro-profundo);
}
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-stopped { overflow: hidden; }

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--crema-marfil);
  background: var(--negro-profundo);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}

img, picture, video, svg { display: block; max-width: 100%; }
img, video { height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; border: none; background: none; }
::selection { background: var(--oro-antiguo); color: var(--negro-profundo); }

h1, h2, h3 { font-family: var(--font-display); font-weight: 500; line-height: 1.04; letter-spacing: -0.01em; }
h1 em, h2 em, h3 em { font-style: italic; color: var(--oro-antiguo); }
em { font-style: italic; }

.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: clamp(1.25rem, 5vw, 4rem); }
.container--narrow { max-width: var(--container-narrow); }
.container--text { max-width: var(--container-text); }

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-micro);
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--oro-antiguo);
  margin-bottom: var(--sp-sm);
}
.lead { font-size: var(--fs-lead); line-height: 1.6; color: var(--blanco-hueso); }
.muted { color: var(--gris-piedra); }

/* ---------- Skip + focus ---------- */
.skip-link {
  position: fixed; top: -100px; left: 1rem; z-index: 9999;
  background: var(--oro-antiguo); color: var(--negro-profundo);
  padding: 0.6rem 1rem; border-radius: var(--radius-soft); font-family: var(--font-mono); font-size: var(--fs-tiny);
}
.skip-link:focus { top: 1rem; }
:focus-visible { outline: 2px solid var(--oro-claro); outline-offset: 3px; }

/* ============================================================
   PROGRESS + GRAIN
   ============================================================ */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 100%; transform-origin: 0 50%;
  transform: scaleX(0); background: linear-gradient(90deg, var(--oro-antiguo), var(--oro-claro));
  z-index: 1000; pointer-events: none;
}
.grain {
  position: fixed; inset: 0; z-index: 900; pointer-events: none; opacity: 0.05; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 800;
  padding: clamp(0.9rem, 2vw, 1.4rem) 0;
  transition: background 0.5s var(--ease-out), backdrop-filter 0.5s, padding 0.4s;
}
.nav.is-scrolled {
  background: var(--glass); backdrop-filter: var(--glass-blur); -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid rgba(196,154,78,0.14);
  padding: 0.7rem 0;
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-md); }
.nav__brand { font-family: var(--font-display); font-size: 1.35rem; letter-spacing: 0.04em; color: var(--blanco-hueso); display: flex; align-items: baseline; gap: 0.15em; }
.nav__brand b { font-weight: 600; }
.nav__brand .n48 { color: var(--oro-antiguo); font-style: italic; }
.nav__links { list-style: none; display: flex; align-items: center; gap: clamp(1rem, 2vw, 2rem); padding: 0; }
.nav__link { font-family: var(--font-mono); font-size: var(--fs-tiny); letter-spacing: 0.12em; text-transform: uppercase; color: var(--crema-marfil); opacity: 0.85; transition: opacity 0.3s, color 0.3s; }
.nav__link:hover { opacity: 1; color: var(--oro-claro); }
.nav__cta {
  font-family: var(--font-mono); font-size: var(--fs-tiny); letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--negro-profundo); background: var(--oro-antiguo); padding: 0.55rem 1.1rem; border-radius: var(--radius-soft);
  transition: background 0.3s, transform 0.3s;
}
.nav__cta:hover { background: var(--oro-claro); transform: translateY(-1px); }
.nav__toggle { display: none; width: 30px; height: 22px; position: relative; }
.nav__toggle span { position: absolute; left: 0; width: 100%; height: 2px; background: var(--blanco-hueso); transition: 0.3s; }
.nav__toggle span:nth-child(1){ top: 0; } .nav__toggle span:nth-child(2){ top: 10px; } .nav__toggle span:nth-child(3){ top: 20px; }

@media (max-width: 860px) {
  .nav__toggle { display: block; z-index: 810; }
  .nav__links {
    position: fixed; inset: 0; flex-direction: column; justify-content: center; gap: var(--sp-md);
    background: var(--glass-strong); backdrop-filter: var(--glass-blur); -webkit-backdrop-filter: var(--glass-blur);
    opacity: 0; visibility: hidden; transition: opacity 0.4s var(--ease-out), visibility 0.4s;
  }
  .nav__links.is-open { opacity: 1; visibility: visible; }
  .nav__link, .nav__cta { font-size: 0.95rem; }
  .nav.is-open .nav__toggle span:nth-child(1){ top:10px; transform: rotate(45deg); }
  .nav.is-open .nav__toggle span:nth-child(2){ opacity:0; }
  .nav.is-open .nav__toggle span:nth-child(3){ top:10px; transform: rotate(-45deg); }
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 0.6em; position: relative;
  font-family: var(--font-mono); font-size: var(--fs-tiny); letter-spacing: 0.16em; text-transform: uppercase;
  padding: 0.95rem 1.7rem; border-radius: var(--radius-soft); transition: transform 0.3s var(--ease-out), box-shadow 0.4s, background 0.3s, color 0.3s;
  will-change: transform;
}
.btn__arrow { width: 1.1em; height: 1px; background: currentColor; position: relative; transition: width 0.3s; }
.btn__arrow::after { content:""; position:absolute; right:0; top:50%; width:6px; height:6px; border-top:1px solid currentColor; border-right:1px solid currentColor; transform: translateY(-50%) rotate(45deg); }
.btn:hover .btn__arrow { width: 1.7em; }
.btn--gold { background: var(--oro-antiguo); color: var(--negro-profundo); box-shadow: 0 10px 40px -12px rgba(196,154,78,0.6); }
.btn--gold:hover { background: var(--oro-claro); transform: translateY(-2px); box-shadow: 0 18px 50px -10px rgba(196,154,78,0.7); }
.btn--ghost { border: 1px solid var(--glass-border); color: var(--crema-marfil); backdrop-filter: blur(4px); }
.btn--ghost:hover { border-color: var(--oro-antiguo); color: var(--oro-claro); transform: translateY(-2px); }

/* ============================================================
   SECTION FRAME
   ============================================================ */
.scene { position: relative; padding-block: var(--sp-3xl); }
.scene--tight { padding-block: var(--sp-2xl); }
.scene--ink   { background: var(--negro-profundo); }
.scene--earth { background: var(--negro-tierra); }
.scene--leather{ background: var(--negro-cuero); }
.scene--cream { background: var(--blanco-hueso); color: var(--negro-tierra); }
.scene--cream .eyebrow { color: var(--marron-roble); }
.scene--cream h1, .scene--cream h2, .scene--cream h3 { color: var(--negro-profundo); }
.scene--cream em { color: var(--marron-roble); }
.scene--cream .lead { color: var(--negro-tierra); }

.scene-label { font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: 0.4em; text-transform: uppercase; color: var(--oro-tenue); }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity 1s var(--ease-out), transform 1s var(--ease-out); }
.reveal.is-in { opacity: 1; transform: none; }
.reveal--d2 { transition-delay: 0.12s; }
.reveal--d3 { transition-delay: 0.24s; }
.reveal--d4 { transition-delay: 0.36s; }

/* ============================================================
   ACT 1 — HERO (rostro + casa al pasar el ratón)
   ============================================================ */
.hero {
  position: relative; height: 100svh; min-height: 620px; overflow: hidden;
  background: radial-gradient(120% 90% at 50% 30%, #16120d 0%, #0a0907 70%, #060504 100%);
}
.hero__stage { position: absolute; inset: 0; display: grid; place-items: center; }
/* the face + house live in one transformable frame (so the scroll-zoom moves both) */
.hero__frame {
  position: relative; width: min(86vh, 92vw); aspect-ratio: 1086 / 1448; max-width: 760px;
  will-change: transform; transform: translateZ(0);
}
.hero__face, .hero__house, .hero__cover {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; border-radius: 2px;
}
.hero__face { filter: contrast(1.06) brightness(1.02); -webkit-mask-image: radial-gradient(120% 120% at 50% 42%, #000 58%, transparent 100%); mask-image: radial-gradient(120% 120% at 50% 42%, #000 58%, transparent 100%); }
/* the old house drawn only where the cursor passes over the head */
.hero__house {
  pointer-events: none; opacity: 0.92; mix-blend-mode: screen;
  -webkit-mask-image: radial-gradient(circle 140px at var(--mx, -200px) var(--my, -200px), #000 0%, rgba(0,0,0,0.6) 45%, transparent 72%);
  mask-image: radial-gradient(circle 140px at var(--mx, -200px) var(--my, -200px), #000 0%, rgba(0,0,0,0.6) 45%, transparent 72%);
  transition: opacity 0.6s var(--ease-out);
}
.hero__house svg { width: 100%; height: 100%; }
.hero__house.is-full { -webkit-mask-image: none; mask-image: none; }
/* book-cover silhouette that the zoom resolves into (revealed near end of scroll) */
.hero__cover { opacity: 0; object-fit: cover; }
.hero__vignette { position: absolute; inset: 0; pointer-events: none; background: radial-gradient(80% 70% at 50% 38%, transparent 40%, rgba(6,5,4,0.7) 100%); opacity: 0.55; }

.hero__head-hint {
  position: absolute; left: 50%; top: 21%; transform: translateX(-50%);
  font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: 0.3em; text-transform: uppercase;
  color: rgba(242,232,213,0.55); white-space: nowrap; pointer-events: none;
  opacity: 0; animation: hintIn 1s 1.4s var(--ease-out) forwards;
}
@keyframes hintIn { to { opacity: 1; } }

.hero__copy { position: absolute; left: 0; right: 0; bottom: clamp(2rem, 6vh, 5rem); text-align: center; z-index: 4; pointer-events: none; padding-inline: 1.25rem; }
.hero__eyebrow { font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: 0.5em; text-transform: uppercase; color: var(--oro-antiguo); }
.hero__title { font-size: var(--fs-h1); color: var(--blanco-hueso); margin-top: 0.5rem; text-shadow: 0 4px 40px rgba(0,0,0,0.7); }
.hero__title .n { color: var(--oro-antiguo); font-style: italic; }
.hero__sub { margin-top: 0.6rem; font-size: var(--fs-small); color: var(--gris-piedra); letter-spacing: 0.02em; }

.hero__scroll { position: absolute; left: 50%; bottom: 1.2rem; transform: translateX(-50%); z-index: 5; display: flex; flex-direction: column; align-items: center; gap: 0.4rem; }
.hero__scroll span { font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: 0.3em; text-transform: uppercase; color: var(--gris-piedra); }
.hero__scroll i { width: 1px; height: 38px; background: linear-gradient(var(--oro-antiguo), transparent); display: block; animation: scrollLine 2.2s var(--ease-out) infinite; }
@keyframes scrollLine { 0%{ transform: scaleY(0); transform-origin: top; } 45%{ transform: scaleY(1); transform-origin: top; } 55%{ transform: scaleY(1); transform-origin: bottom; } 100%{ transform: scaleY(0); transform-origin: bottom; } }

/* fragments that rise as we zoom into the mind */
.mind-words { position: absolute; inset: 0; z-index: 3; pointer-events: none; display: grid; place-items: center; }
.mind-word { position: absolute; font-family: var(--font-display); font-style: italic; color: var(--blanco-hueso); text-align: center; opacity: 0; font-size: clamp(1.4rem, 4vw, 3rem); text-shadow: 0 2px 30px rgba(0,0,0,0.8); width: min(90vw, 760px); }

/* ============================================================
   ACT — PUERTA / 48
   ============================================================ */
.door {
  position: relative; min-height: 100svh; display: grid; place-items: center; overflow: hidden;
  background: radial-gradient(90% 100% at 50% 40%, #1a140d, #0b0907 75%);
  text-align: center;
}
.door__num {
  font-family: var(--font-display); font-weight: 600; font-size: var(--fs-mega); line-height: 0.8;
  color: transparent;
  background: linear-gradient(160deg, var(--oro-claro) 0%, var(--oro-antiguo) 42%, var(--marron-roble) 100%);
  -webkit-background-clip: text; background-clip: text;
  filter: drop-shadow(0 24px 70px rgba(196,154,78,0.22)); letter-spacing: -0.04em;
}
.door__sep { width: 1px; height: clamp(40px, 8vh, 90px); background: linear-gradient(var(--oro-antiguo), transparent); margin: var(--sp-md) auto; }
.door__verse { font-family: var(--font-display); font-style: italic; font-size: var(--fs-h3); color: var(--crema-marfil); max-width: 30ch; margin-inline: auto; line-height: 1.3; }
.door__verse b { color: var(--oro-antiguo); font-style: italic; font-weight: 500; }
.door__cite { display: block; margin-top: var(--sp-sm); font-family: var(--font-mono); font-size: var(--fs-tiny); letter-spacing: 0.2em; text-transform: uppercase; color: var(--gris-piedra); }

/* ============================================================
   ACT — PALABRAS QUE CAEN (escritura → letras)
   ============================================================ */
.words { position: relative; background: var(--negro-profundo); overflow: hidden; }
.words__intro { text-align: center; max-width: 40ch; margin-inline: auto; padding-top: var(--sp-2xl); }
.handwrite { max-width: var(--container-narrow); margin: var(--sp-xl) auto 0; padding-inline: var(--sp-md); }
.handwrite svg { width: 100%; height: auto; overflow: visible; }
.handwrite .ink { fill: none; stroke: var(--oro-claro); stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round;
  stroke-dasharray: var(--len); stroke-dashoffset: var(--len); }
.handwrite.is-writing .ink { animation: write 3.4s var(--ease-out) forwards; }
@keyframes write { to { stroke-dashoffset: 0; } }

.falling { position: relative; min-height: 130vh; }
.falling__phrase {
  position: sticky; top: 0; height: 100svh; display: grid; place-items: center; text-align: center;
}
.falling__line { font-family: var(--font-display); font-size: clamp(1.6rem, 4.5vw, 3.4rem); line-height: 1.25; max-width: 22ch; color: var(--crema-marfil); }
.falling__char { display: inline-block; will-change: transform, opacity; }
.falling__char--space { width: 0.35em; }

/* ============================================================
   ACT — EL LIBRO (reveal + visor 3D + film de producto)
   ============================================================ */
.book-reveal { position: relative; background: radial-gradient(100% 80% at 50% 30%, #15110c, #080706 80%); padding-block: var(--sp-3xl); overflow: hidden; }
.book-reveal__inner { display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(2rem, 5vw, 5rem); align-items: center; }
.book-stage { position: relative; display: grid; place-items: center; min-height: 60vh; perspective: 1600px; }
.book-stage__glow { position: absolute; width: 70%; aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle, rgba(196,154,78,0.35), transparent 65%); filter: blur(40px); }

/* The hero 3D book (centered-cuboid model; opens viewer on click) */
.book3d-hero {
  --w: clamp(210px, 24vw, 330px);
  --h: calc(var(--w) * 1.5);
  --d: clamp(13px, 3.2vw, 24px);
  --rx: 6deg; --ry: -27deg;
  position: relative; width: var(--w); height: var(--h);
  transform-style: preserve-3d; transform: rotateX(var(--rx)) rotateY(var(--ry));
  transition: transform 0.9s var(--ease-out); cursor: pointer;
}
.book3d-hero:hover { --ry: -16deg; --rx: 4deg; }
.book3d-hero__face { position: absolute; top: 50%; left: 50%; backface-visibility: hidden; overflow: hidden; background-size: cover; background-position: center; }
.book3d-hero__front, .book3d-hero__back { width: var(--w); height: var(--h); }
.book3d-hero__front { transform: translate(-50%,-50%) translateZ(calc(var(--d) / 2)); background-image: url("../img/3d/casa48-front.webp"); border-radius: 1px 3px 3px 1px; box-shadow: 0 36px 70px -24px rgba(0,0,0,0.9); }
.book3d-hero__back  { transform: translate(-50%,-50%) rotateY(180deg) translateZ(calc(var(--d) / 2)); background-image: url("../img/3d/casa48-back.webp"); }
.book3d-hero__spine { width: var(--d); height: var(--h); transform: translate(-50%,-50%) rotateY(-90deg) translateZ(calc(var(--w) / 2)); background-image: url("../img/3d/casa48-spine.webp"); }
.book3d-hero__pages { width: var(--d); height: var(--h); transform: translate(-50%,-50%) rotateY(90deg) translateZ(calc(var(--w) / 2)); background: repeating-linear-gradient(90deg, #efe7d6, #efe7d6 1px, #d9cdb4 2px, #efe7d6 3px); }
.book3d-hero__hint { position: absolute; left: 50%; bottom: -2.4rem; transform: translateX(-50%); white-space: nowrap; font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: 0.2em; text-transform: uppercase; color: var(--oro-tenue); }

.book-copy .eyebrow { color: var(--oro-antiguo); }
.book-copy h2 { font-size: var(--fs-h1); margin-bottom: var(--sp-sm); }
.book-copy .tagline { font-family: var(--font-display); font-style: italic; font-size: var(--fs-h3); color: var(--oro-claro); margin: var(--sp-sm) 0; line-height: 1.25; }
.book-copy p { color: var(--crema-marfil); opacity: 0.9; margin-bottom: var(--sp-sm); max-width: 46ch; }
.book-copy .ctas { display: flex; flex-wrap: wrap; gap: var(--sp-sm); margin-top: var(--sp-md); }
.book-meta { display: flex; flex-wrap: wrap; gap: var(--sp-md); margin-top: var(--sp-md); padding-top: var(--sp-md); border-top: 1px solid rgba(196,154,78,0.16); }
.book-meta div { display: flex; flex-direction: column; }
.book-meta .k { font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: 0.18em; text-transform: uppercase; color: var(--gris-piedra); }
.book-meta .v { font-family: var(--font-display); font-size: 1.5rem; color: var(--blanco-hueso); }

/* product film band */
.film { display: grid; grid-template-columns: repeat(12, 1fr); gap: clamp(0.6rem,1.5vw,1.1rem); padding-block: var(--sp-xl); }
.film__cell { position: relative; overflow: hidden; border-radius: 3px; background: #0b0907; }
.film__cell video, .film__cell img { width: 100%; height: 100%; object-fit: cover; }
.film__cell--wide { grid-column: span 7; aspect-ratio: 16/10; }
.film__cell--tall { grid-column: span 5; aspect-ratio: 4/5; }
.film__cell--full { grid-column: span 12; aspect-ratio: 16/7; }
.film__cap { position: absolute; left: 1rem; bottom: 0.8rem; font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: 0.2em; text-transform: uppercase; color: rgba(242,232,213,0.8); text-shadow: 0 1px 8px rgba(0,0,0,0.8); }

/* ============================================================
   PARA TI SI… / SINOPSIS / FRAGMENTO
   ============================================================ */
.foryou { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(2rem,5vw,5rem); align-items: start; }
.foryou__list { list-style: none; padding: 0; counter-reset: fy; display: grid; gap: var(--sp-sm); }
.foryou__item { display: flex; gap: var(--sp-sm); padding-bottom: var(--sp-sm); border-bottom: 1px solid rgba(92,74,50,0.18); }
.foryou__item .m { font-family: var(--font-display); font-style: italic; font-size: 1.6rem; color: var(--marron-roble); min-width: 1.6em; }
.foryou__item p { margin: 0; }

.synopsis p { margin-bottom: var(--sp-sm); }
.synopsis__q { margin-bottom: var(--sp-md); }
.synopsis strong { color: var(--blanco-hueso); font-weight: 600; letter-spacing: 0.01em; }
.synopsis__casi {
  font-family: var(--font-display); font-style: italic;
  font-size: clamp(2.2rem, 6vw, 3.6rem); line-height: 1;
  color: var(--oro-antiguo); margin: var(--sp-sm) 0 var(--sp-md) !important;
}
.pull {
  border-left: 2px solid var(--oro-antiguo); padding-left: var(--sp-md); margin: var(--sp-lg) 0;
  font-family: var(--font-display); font-style: italic; font-size: var(--fs-h3); line-height: 1.3; color: var(--blanco-hueso);
}
.excerpt { position: relative; }
.excerpt__text { font-family: var(--font-display); font-size: clamp(1.3rem, 2.4vw, 1.9rem); line-height: 1.5; font-style: italic; color: var(--crema-marfil); max-width: 34ch; }
.excerpt__rule { width: 60px; height: 2px; background: var(--oro-antiguo); margin-bottom: var(--sp-md); }

/* ============================================================
   AUTOR / VOZ
   ============================================================ */
.author { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(2rem,5vw,5rem); align-items: center; }
.author__photo { position: relative; border-radius: 4px; overflow: hidden; box-shadow: 0 30px 70px -30px rgba(0,0,0,0.8); }
.author__photo img { width: 100%; }
.author__tag { position: absolute; left: 1rem; bottom: 1rem; font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: 0.2em; text-transform: uppercase; color: rgba(242,232,213,0.85); }
.stat-row { display: flex; flex-wrap: wrap; gap: var(--sp-lg); margin-top: var(--sp-md); }
.stat .n { font-family: var(--font-display); font-size: clamp(2rem,4vw,3rem); color: var(--oro-antiguo); line-height: 1; }
.stat .l { font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: 0.18em; text-transform: uppercase; color: var(--gris-piedra); margin-top: 0.3rem; }

/* ============================================================
   OTROS LIBROS / CONEXIÓN
   ============================================================ */
.bridge { text-align: center; }
.bridge__inner { max-width: 50ch; margin-inline: auto; }
.bridge__link {
  display: inline-flex; align-items: center; gap: 0.8rem; margin-top: var(--sp-md);
  padding: 1rem 1.6rem; border: 1px solid var(--glass-border); border-radius: 100px;
  font-family: var(--font-mono); font-size: var(--fs-tiny); letter-spacing: 0.16em; text-transform: uppercase; color: var(--crema-marfil);
  transition: border-color 0.3s, transform 0.3s, color 0.3s;
}
.bridge__link:hover { border-color: var(--oro-antiguo); color: var(--oro-claro); transform: translateY(-2px); }

/* ============================================================
   CTA FINAL + FOOTER
   ============================================================ */
.final {
  text-align: center; background:
    linear-gradient(rgba(8,7,6,0.78), rgba(8,7,6,0.92)),
    url("../img/3d/casa48-front.webp") center 30% / cover no-repeat;
}
.final h2 { font-size: var(--fs-hero); }
.formats { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-sm); max-width: 760px; margin: var(--sp-lg) auto 0; }
.format {
  display: flex; flex-direction: column; gap: 0.4rem; align-items: center; padding: var(--sp-md) var(--sp-sm);
  border: 1px solid var(--glass-border); border-radius: var(--radius-soft); background: var(--glass); backdrop-filter: blur(6px);
  transition: border-color 0.3s, transform 0.3s, background 0.3s;
}
.format:hover { border-color: var(--oro-antiguo); transform: translateY(-3px); background: rgba(31,27,22,0.6); }
.format .ft { font-family: var(--font-display); font-size: 1.4rem; color: var(--blanco-hueso); }
.format .fd { font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: 0.12em; text-transform: uppercase; color: var(--gris-piedra); }
.format .fg { font-family: var(--font-mono); font-size: var(--fs-tiny); color: var(--oro-antiguo); margin-top: 0.4rem; }

.footer { background: var(--negro-profundo); padding-block: var(--sp-xl) var(--sp-lg); border-top: 1px solid rgba(196,154,78,0.12); }
.footer__grid { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--sp-lg); }
.footer__brand { font-family: var(--font-display); font-size: 1.6rem; color: var(--blanco-hueso); }
.footer__links { display: flex; flex-wrap: wrap; gap: var(--sp-md); }
.footer__links a { font-family: var(--font-mono); font-size: var(--fs-tiny); letter-spacing: 0.1em; text-transform: uppercase; color: var(--gris-piedra); transition: color 0.3s; }
.footer__links a:hover { color: var(--oro-claro); }
.footer__legal { margin-top: var(--sp-lg); font-size: var(--fs-tiny); color: var(--gris-piedra); }

/* ============================================================
   VISOR 3D (modal) — portado de samuelrodriguesautor.com
   ============================================================ */
.b3d-viewer { position: fixed; inset: 0; z-index: 1200; display: none; place-items: center; background: rgba(6,5,4,0.92); backdrop-filter: blur(10px); padding: 1.25rem; }
.b3d-viewer.is-open { display: grid; }
.b3d-close { position: absolute; top: 1.2rem; right: 1.4rem; width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--glass-border); color: var(--crema-marfil); font-size: 1.2rem; transition: 0.3s; }
.b3d-close:hover { background: var(--negro-cuero); color: var(--oro-claro); }
.b3d-scene { perspective: 1900px; display: grid; place-items: center; gap: var(--sp-md); }
.b3d-stage { perspective: 1900px; }
.b3d {
  --w: clamp(190px, 42vw, 300px);
  --h: calc(var(--w) * 1.5);
  --d: clamp(13px, 4vw, 24px);
  --rx: 7deg; --ry: -28deg;
  position: relative; width: var(--w); height: var(--h);
  transform-style: preserve-3d; transform: rotateX(var(--rx)) rotateY(var(--ry));
  transition: transform 1.4s var(--ease-cinema);
}
@keyframes b3dSpin {
  0%   { transform: rotateX(7deg) rotateY(-28deg); }
  100% { transform: rotateX(7deg) rotateY(332deg); }
}
.b3d.spin { animation: b3dSpin 1.9s var(--ease-cinema) forwards; }
.b3d__face { position: absolute; top: 50%; left: 50%; backface-visibility: hidden; overflow: hidden; background-size: cover; background-position: center; }
.b3d__front, .b3d__back { width: var(--w); height: var(--h); }
.b3d__front { transform: translate(-50%,-50%) translateZ(calc(var(--d) / 2)); background-image: url("../img/3d/casa48-front.webp"); border-radius: 1px 4px 4px 1px; box-shadow: 0 44px 90px -34px rgba(0,0,0,0.95); }
.b3d__back  { transform: translate(-50%,-50%) rotateY(180deg) translateZ(calc(var(--d) / 2)); background-image: url("../img/3d/casa48-back.webp"); }
.b3d__spine { width: var(--d); height: var(--h); transform: translate(-50%,-50%) rotateY(-90deg) translateZ(calc(var(--w) / 2)); background-image: url("../img/3d/casa48-spine.webp"); }
.b3d__pages { width: var(--d); height: var(--h); transform: translate(-50%,-50%) rotateY(90deg) translateZ(calc(var(--w) / 2)); background: repeating-linear-gradient(90deg, #efe7d6, #efe7d6 1px, #cdbf9e 2px, #efe7d6 3px); }
.b3d-title { font-family: var(--font-display); font-style: italic; font-size: 1.5rem; color: var(--blanco-hueso); text-align: center; }
.b3d-bar { display: flex; gap: var(--sp-sm); justify-content: center; flex-wrap: wrap; }
.b3d-btn { font-family: var(--font-mono); font-size: var(--fs-tiny); letter-spacing: 0.12em; text-transform: uppercase; color: var(--crema-marfil); border: 1px solid var(--glass-border); padding: 0.6rem 1rem; border-radius: var(--radius-soft); transition: 0.3s; }
.b3d-btn:hover { border-color: var(--oro-antiguo); color: var(--oro-claro); }
.b3d-ficha { max-width: 360px; margin-inline: auto; font-size: var(--fs-small); color: var(--gris-piedra); display: none; }
.b3d-ficha.is-open { display: block; }
.b3d-ficha dl { display: grid; grid-template-columns: auto 1fr; gap: 0.3rem 1rem; margin: 0; }
.b3d-ficha dt { font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: 0.1em; text-transform: uppercase; color: var(--oro-tenue); }
.b3d-ficha dd { margin: 0; color: var(--crema-marfil); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 920px) {
  .book-reveal__inner, .foryou, .author { grid-template-columns: 1fr; }
  .book-stage { min-height: 46vh; }
  .film__cell--wide, .film__cell--tall { grid-column: span 12; }
  .formats { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .hero__copy { bottom: 4.5rem; }
  .book-meta { gap: var(--sp-sm); }
}

/* ============================================================
   REDUCED MOTION — desactiva pins/scrub, todo legible
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
  .hero__house { display: none; }
}
.no-motion .falling { min-height: auto; }
.no-motion .falling__phrase { position: static; height: auto; padding-block: var(--sp-2xl); }