/* ==========================================================================
   SIN TESTIGOS — Viktor Kane
   Hoja de estilos principal
   Concepto: expediente confidencial. Cada sección es una pieza de un
   dossier que se abre mientras se habla. Movimiento contenido, tipografía
   editorial, silencio visual.
   ========================================================================== */

/* -------------------- Tokens -------------------- */
:root{
  /* color */
  --black: #000000;
  --near-black: #060606;
  --surface: #0c0c0d;
  --surface-2: #111113;
  --hairline: rgba(245,244,240,0.09);
  --hairline-strong: rgba(245,244,240,0.16);
  --white: #f5f4f0;
  --white-pure: #ffffff;
  --gray-1: #9a9a97;
  --gray-2: #7a7a78; /* AA-compliant vs #000 for small uppercase labels (4.88:1) */
  --red: #9c1c1a;
  --red-bright: #b8221f;

  /* type */
  --font-display: 'Fraunces', 'Iowan Old Style', 'Georgia', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;

  /* rhythm */
  --section-pad-y: clamp(88px, 14vw, 200px);
  --container-w: 1180px;
  --container-pad: clamp(24px, 6vw, 64px);

  /* motion */
  --ease-out: cubic-bezier(.16,.8,.24,1);
  --ease-soft: cubic-bezier(.4,0,.2,1);
  --dur-s: 420ms;
  --dur-m: 900ms;
  --dur-l: 1500ms;
}

/* -------------------- Reset -------------------- */
*, *::before, *::after{ box-sizing: border-box; }
html{
  scroll-behavior: smooth;
  background: var(--black);
}
body{
  margin: 0;
  background: var(--black);
  color: var(--white);
  font-family: var(--font-body);
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; }
ul{ list-style: none; margin: 0; padding: 0; }
h1,h2,h3,h4,p,figure{ margin: 0; }
button{ font-family: inherit; background: none; border: none; color: inherit; cursor: pointer; }
input, textarea{ font-family: inherit; }

::selection{ background: var(--white); color: var(--black); }

/* Ambient film-grain texture — pure CSS/SVG, no image request */
body::before{
  content: "";
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  background-size: 180px 180px;
}

/* Vertical vignette to deepen the black at top & bottom of viewport */
body::after{
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(120% 90% at 50% 0%, rgba(0,0,0,0) 0%, rgba(0,0,0,0.5) 100%);
}

:focus-visible{
  outline: 1px solid var(--white);
  outline-offset: 4px;
}

.skip-link{
  position: absolute;
  top: -60px;
  left: 16px;
  z-index: 100;
  background: var(--white);
  color: var(--black);
  padding: 12px 20px;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: top var(--dur-s) var(--ease-soft);
}
.skip-link:focus{
  top: 16px;
}

/* -------------------- Typography -------------------- */
.eyebrow{
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--gray-1);
  font-weight: 400;
  display: flex;
  align-items: center;
  gap: 14px;
}
.eyebrow::before{
  content: "";
  width: 26px;
  height: 1px;
  background: var(--gray-2);
  display: inline-block;
}

.section-title{
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(30px, 4.4vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--white-pure);
  margin-top: 22px;
}

.lede{
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(18px, 2vw, 23px);
  line-height: 1.55;
  color: var(--gray-1);
  max-width: 46ch;
}

p.body-text{
  font-size: 16px;
  line-height: 1.85;
  color: var(--gray-1);
  font-weight: 300;
  max-width: 54ch;
}
p.body-text strong{ color: var(--white); font-weight: 500; }

.container{
  max-width: var(--container-w);
  margin: 0 auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
  position: relative;
}

section{
  position: relative;
  padding-top: var(--section-pad-y);
  padding-bottom: var(--section-pad-y);
  border-top: 1px solid var(--hairline);
}

.section-head{
  margin-bottom: clamp(48px, 8vw, 96px);
}

/* -------------------- Buttons -------------------- */
.btn{
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 17px 34px;
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 500;
  border: 1px solid var(--hairline-strong);
  border-radius: 2px;
  color: var(--white);
  transition: border-color var(--dur-s) var(--ease-soft), background var(--dur-s) var(--ease-soft), color var(--dur-s) var(--ease-soft), letter-spacing var(--dur-s) var(--ease-soft);
  overflow: hidden;
  isolation: isolate;
}
.btn::before{
  content:"";
  position:absolute; inset:0;
  background: var(--white);
  transform: translateY(101%);
  transition: transform var(--dur-s) var(--ease-out);
  z-index: -1;
}
.btn:hover, .btn:focus-visible{
  color: var(--black);
  letter-spacing: 0.26em;
}
.btn:hover::before, .btn:focus-visible::before{ transform: translateY(0%); }

.btn--ghost{ border-color: var(--hairline); }

.btn--solid{
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
}
.btn--solid::before{ background: var(--red-bright); }
.btn--solid:hover{ color: var(--white); }

.btn svg{ width: 13px; height: 13px; flex-shrink: 0; }

.link-inline{
  position: relative;
  padding-bottom: 3px;
  border-bottom: 1px solid var(--hairline-strong);
  transition: border-color var(--dur-s) var(--ease-soft), color var(--dur-s) var(--ease-soft);
}
.link-inline:hover{ border-color: var(--white); color: var(--white-pure); }

/* -------------------- Reveal on scroll -------------------- */
.reveal{
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 1.05s var(--ease-out), transform 1.05s var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}
.reveal.is-visible{
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce){
  .reveal{ opacity: 1; transform: none; transition: none; }
}

/* -------------------- Top progress + mini nav -------------------- */
.progress-rail{
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: 2px;
  z-index: 60;
  background: transparent;
}
.progress-rail__fill{
  height: 100%;
  width: 0%;
  background: var(--white);
  transform-origin: left;
  transition: width 120ms linear;
}

.top-nav{
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px var(--container-pad);
  mix-blend-mode: difference;
}
.top-nav__mark{
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--white-pure);
  opacity: 0;
  transition: opacity var(--dur-m) var(--ease-out);
}
.top-nav__mark.is-visible{ opacity: 1; }
.top-nav__mark img{ height: 15px; width: auto; }

.top-nav__counter{
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--white-pure);
  opacity: 0.8;
  font-variant-numeric: tabular-nums;
}

/* -------------------- Dossier index rail (desktop signature element) -------------------- */
.dossier-rail{
  position: fixed;
  right: clamp(20px, 3vw, 46px);
  top: 50%;
  transform: translateY(-50%);
  z-index: 40;
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.dossier-rail__item{
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  cursor: pointer;
  padding: 4px 2px;
  font-size: inherit;
}
.dossier-rail__label{
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray-2);
  white-space: nowrap;
  opacity: 0;
  transform: translateX(6px);
  transition: opacity var(--dur-s) var(--ease-soft), transform var(--dur-s) var(--ease-soft), color var(--dur-s) var(--ease-soft);
}
.dossier-rail__item:hover .dossier-rail__label,
.dossier-rail__item.is-active .dossier-rail__label{
  opacity: 1;
  transform: translateX(0);
  color: var(--white);
}
.dossier-rail__dot{
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--gray-2);
  transition: background var(--dur-s) var(--ease-soft), transform var(--dur-s) var(--ease-soft), box-shadow var(--dur-s) var(--ease-soft);
  flex-shrink: 0;
}
.dossier-rail__item.is-active .dossier-rail__dot{
  background: var(--white-pure);
  transform: scale(1.5);
  box-shadow: 0 0 0 3px rgba(245,244,240,0.12);
}

@media (max-width: 980px){
  .dossier-rail{ display: none; }
}

/* -------------------- Hero -------------------- */
.hero{
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px var(--container-pad) 80px;
  border-top: none;
  overflow: hidden;
}

.hero__scanline{
  position: absolute;
  left: 0; right: 0;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(245,244,240,0.9), transparent);
  box-shadow: 0 0 24px 4px rgba(245,244,240,0.35);
  transform: translateY(-10px);
  animation: scan-sweep 2.4s var(--ease-soft) 1 both;
  z-index: 5;
}
@keyframes scan-sweep{
  0%   { transform: translateY(-10px); opacity: 0; }
  6%   { opacity: 1; }
  92%  { opacity: 1; }
  100% { transform: translateY(100vh); opacity: 0; }
}

.hero__inner{
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 30px;
  position: relative;
  z-index: 3;
}

.hero__logo{
  width: clamp(150px, 20vw, 230px);
  opacity: 0;
  filter: blur(6px);
  animation: hero-in var(--dur-l) var(--ease-out) 0.35s forwards;
}

.hero__title{
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(52px, 11vw, 128px);
  line-height: 0.94;
  letter-spacing: 0.01em;
  color: var(--white-pure);
  opacity: 0;
  filter: blur(6px);
  animation: hero-in var(--dur-l) var(--ease-out) 0.75s forwards;
}

.hero__tagline{
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(16px, 2vw, 21px);
  color: var(--gray-1);
  opacity: 0;
  filter: blur(6px);
  animation: hero-in var(--dur-l) var(--ease-out) 1.15s forwards;
}

.hero__eyebrow{
  opacity: 0;
  filter: blur(6px);
  animation: hero-in var(--dur-l) var(--ease-out) 1.15s forwards;
  justify-content: center;
}

.hero__cta{
  margin-top: 20px;
  opacity: 0;
  filter: blur(6px);
  animation: hero-in var(--dur-l) var(--ease-out) 1.55s forwards;
}

@keyframes hero-in{
  to{ opacity: 1; filter: blur(0); }
}

.hero__scroll{
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  opacity: 0;
  animation: hero-in var(--dur-l) var(--ease-out) 2s forwards;
  z-index: 3;
}
.hero__scroll span{
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gray-2);
}
.hero__scroll-line{
  width: 1px;
  height: 40px;
  background: var(--gray-2);
  position: relative;
  overflow: hidden;
}
.hero__scroll-line::after{
  content: "";
  position: absolute;
  top: -100%;
  left: 0; right: 0;
  height: 100%;
  background: var(--white);
  animation: scroll-drip 2.2s var(--ease-soft) infinite;
}
@keyframes scroll-drip{
  0%{ top: -100%; }
  60%{ top: 100%; }
  100%{ top: 100%; }
}

@media (prefers-reduced-motion: reduce){
  .hero__logo, .hero__title, .hero__tagline, .hero__eyebrow, .hero__cta, .hero__scroll{
    opacity: 1; filter: none; animation: none;
  }
  .hero__scanline{ display: none; }
  .hero__scroll-line::after{ animation: none; }
}

.hero__bg-texture{
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(60% 50% at 50% 18%, rgba(255,255,255,0.05) 0%, rgba(0,0,0,0) 60%),
    radial-gradient(80% 60% at 50% 100%, rgba(255,255,255,0.03) 0%, rgba(0,0,0,0) 70%);
}

/* -------------------- Autor -------------------- */
.autor{
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(40px, 8vw, 120px);
  align-items: start;
}
.autor__mark{
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 12px;
}
.autor__silhouette{
  width: 100%;
  max-width: 320px;
  aspect-ratio: 3/4;
  border: 1px solid var(--hairline-strong);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.autor__silhouette::before,
.autor__silhouette::after{
  content: "";
  position: absolute;
  width: 22px; height: 22px;
  border-color: var(--gray-2);
}
.autor__silhouette::before{ top: -1px; left: -1px; border-top: 1px solid; border-left: 1px solid; }
.autor__silhouette::after{ bottom: -1px; right: -1px; border-bottom: 1px solid; border-right: 1px solid; }
.autor__silhouette img{ width: 96px; opacity: 0.85; }
.autor__silhouette-caption{
  position: absolute;
  bottom: 20px;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-2);
}

.autor__text p.body-text{ margin-top: 22px; }
.autor__text p.body-text:first-of-type{ margin-top: 0; }

/* -------------------- El Libro -------------------- */
.libro{
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(40px, 8vw, 120px);
  align-items: center;
}
.libro__cover{
  position: relative;
}
.libro__cover-frame{
  position: relative;
  overflow: hidden;
  border: 1px solid var(--hairline-strong);
  box-shadow: 0 60px 120px -40px rgba(0,0,0,0.9);
}
.libro__cover-frame img{ width: 100%; height: auto; }
.libro__cover-tag{
  margin-top: 18px;
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray-2);
}

.libro__meta{ display: flex; flex-direction: column; gap: 26px; }
.libro__facts{
  display: flex;
  flex-wrap: wrap;
  gap: 12px 34px;
  margin-top: 8px;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
}
.libro__fact dt{
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray-2);
  margin: 0;
}
.libro__fact dd{
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: 17px;
  color: var(--white);
}

/* -------------------- Sinopsis -------------------- */
.sinopsis{ text-align: left; }
.sinopsis__grid{
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: clamp(40px, 8vw, 100px);
}
.sinopsis__quote{
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.35;
  color: var(--white-pure);
  border-left: 1px solid var(--hairline-strong);
  padding-left: 26px;
}
.sinopsis__body p{ margin-top: 22px; }
.sinopsis__body p:first-child{ margin-top: 0; }

/* -------------------- Experiencia -------------------- */
.experiencia__list{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  margin-top: 20px;
}
.experiencia__item{
  background: var(--near-black);
  padding: 34px 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: background var(--dur-m) var(--ease-soft);
}
.experiencia__item:hover{ background: var(--surface); }
.experiencia__num{
  font-family: var(--font-display);
  font-style: italic;
  font-size: 14px;
  color: var(--gray-2);
}
.experiencia__item h3{
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 19px;
  color: var(--white);
}
.experiencia__item p{
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray-1);
  margin: 0;
}

/* -------------------- Valores -------------------- */
.valores__grid{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 48px 40px;
  margin-top: 12px;
}
.valor{
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.valor__icon{
  width: 34px; height: 34px;
  stroke: var(--white);
  fill: none;
  stroke-width: 1;
}
.valor h3{
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 18px;
  color: var(--white);
  letter-spacing: 0.01em;
}
.valor p{
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray-1);
  max-width: 34ch;
}

/* -------------------- Cronología -------------------- */
.timeline{
  margin-top: 20px;
  position: relative;
}
.timeline__track{
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--hairline-strong);
}
.timeline__fill{
  position: absolute;
  left: 0; top: 0;
  width: 100%;
  height: 0%;
  background: var(--white);
  transition: height 1.4s var(--ease-out);
}
.timeline__item{
  position: relative;
  padding: 0 0 56px 42px;
}
.timeline__item:last-child{ padding-bottom: 0; }
.timeline__dot{
  position: absolute;
  left: 0; top: 4px;
  width: 15px; height: 15px;
  border-radius: 50%;
  border: 1px solid var(--gray-2);
  background: var(--black);
  display: flex; align-items: center; justify-content: center;
}
.timeline__dot::after{
  content:"";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--gray-2);
  transition: background var(--dur-m) var(--ease-soft);
}
.timeline__item.is-visible .timeline__dot::after{ background: var(--white-pure); }
.timeline__item.is-visible .timeline__dot{ border-color: var(--white-pure); }
.timeline__phase{
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray-2);
}
.timeline__title{
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(19px, 2.4vw, 24px);
  color: var(--white-pure);
  margin-top: 8px;
}
.timeline__desc{
  margin-top: 8px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--gray-1);
  max-width: 50ch;
}

/* -------------------- Presentación -------------------- */
.presentacion{
  text-align: center;
}
.presentacion__frame{
  max-width: 640px;
  margin: 0 auto;
  padding: 64px clamp(24px,6vw,64px);
  border: 1px solid var(--hairline-strong);
  position: relative;
}
.presentacion__frame::before,
.presentacion__frame::after{
  content: "";
  position: absolute;
  top: 14px; bottom: 14px;
  width: 1px;
  background: var(--hairline);
}
.presentacion__frame::before{ left: 14px; }
.presentacion__frame::after{ right: 14px; }
.presentacion .lede{ margin: 20px auto 0; }
.presentacion__note{
  margin-top: 28px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--gray-2);
}
.presentacion__note strong{ color: var(--gray-1); font-weight: 500; }

/* -------------------- Redes -------------------- */
.redes__grid{
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px,1fr));
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  margin-top: 12px;
}
.redes__link{
  background: var(--near-black);
  padding: 46px 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  transition: background var(--dur-s) var(--ease-soft);
}
.redes__link:hover{ background: var(--surface); }
.redes__link-name{
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 32px);
  color: var(--white-pure);
}
.redes__link-handle{
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gray-1);
  font-family: var(--font-body);
}
.redes__link-arrow{
  width: 20px; height: 20px;
  flex-shrink: 0;
  transition: transform var(--dur-s) var(--ease-soft);
}
.redes__link:hover .redes__link-arrow{ transform: translate(4px,-4px); }

/* -------------------- Amazon -------------------- */
.amazon{
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: clamp(36px, 6vw, 90px);
  align-items: center;
}
.amazon__cover{
  max-width: 220px;
  border: 1px solid var(--hairline-strong);
  box-shadow: 0 40px 90px -30px rgba(0,0,0,0.85);
}
.amazon__cta{ margin-top: 30px; display: flex; gap: 18px; flex-wrap: wrap; }

/* -------------------- Galería -------------------- */
.galeria__grid{
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 18px;
  margin-top: 12px;
}
.galeria__tile{
  position: relative;
  aspect-ratio: 4/5;
  overflow: hidden;
  cursor: pointer;
  background: var(--surface);
  border: 1px solid var(--hairline);
}
.galeria__tile img{
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 1.1s var(--ease-out), filter var(--dur-m) var(--ease-soft);
  filter: grayscale(0.15) brightness(0.92);
}
.galeria__tile:hover img{ transform: scale(1.045); filter: grayscale(0) brightness(1); }
.galeria__tile-label{
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 16px 18px;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--white);
  background: linear-gradient(0deg, rgba(0,0,0,0.75), transparent);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--dur-s) var(--ease-soft), transform var(--dur-s) var(--ease-soft);
}
.galeria__tile:hover .galeria__tile-label{ opacity: 1; transform: translateY(0); }

.galeria__tile--empty{
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px dashed var(--hairline-strong);
  cursor: default;
}
.galeria__tile--empty span{
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray-2);
  text-align: center;
  padding: 0 20px;
}

.lightbox{
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.94);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-s) var(--ease-soft);
  padding: 40px;
}
.lightbox.is-open{ opacity: 1; visibility: visible; }
.lightbox img{
  max-width: min(880px, 90vw);
  max-height: 84vh;
  width: auto;
  border: 1px solid var(--hairline-strong);
}
.lightbox__close{
  position: absolute;
  top: 26px; right: 30px;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-1);
  display: flex; align-items: center; gap: 10px;
}
.lightbox__close:hover{ color: var(--white); }
.lightbox__nav{
  position: absolute;
  top: 50%; transform: translateY(-50%);
  color: var(--gray-1);
  font-size: 22px;
  padding: 14px;
}
.lightbox__nav:hover{ color: var(--white); }
.lightbox__nav--prev{ left: 14px; }
.lightbox__nav--next{ right: 14px; }

/* -------------------- Footer -------------------- */
footer{
  border-top: 1px solid var(--hairline);
  padding: 70px var(--container-pad) 46px;
}
.footer__top{
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--hairline);
}
.footer__brand{ display: flex; align-items: center; gap: 12px; }
.footer__brand img{ height: 20px; width: auto; }
.footer__brand span{
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-1);
}
.footer__links{
  display: flex;
  gap: 30px;
  flex-wrap: wrap;
}
.footer__links a{
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-1);
  transition: color var(--dur-s) var(--ease-soft);
}
.footer__links a:hover{ color: var(--white); }
.footer__bottom{
  padding-top: 26px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--gray-2);
}

/* -------------------- Responsive -------------------- */
@media (max-width: 900px){
  .autor, .libro, .amazon, .sinopsis__grid{
    grid-template-columns: 1fr;
  }
  .autor__mark{ order: 2; padding-top: 40px; }
  .autor__text{ order: 1; }
  .libro__cover{ max-width: 280px; margin: 0 auto; }
  .amazon__cover{ margin: 0 auto; }
  .amazon{ text-align: center; }
  .amazon__cta{ justify-content: center; }
  .sinopsis__quote{ border-left: none; border-top: 1px solid var(--hairline-strong); padding-left: 0; padding-top: 20px; }
}

@media (max-width: 640px){
  :root{ --section-pad-y: 76px; }
  .hero{ padding-top: 100px; }
  .top-nav{ padding: 18px var(--container-pad); }
  .footer__top{ flex-direction: column; }
}

@media (min-width: 981px){
  section[data-snap]{
    scroll-snap-align: start;
  }
  .snap-container{
    scroll-snap-type: y proximity;
  }
}