/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: Georgia, 'Times New Roman', serif;
  background: #0e0e0e;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* ============================================================
   SCROLL SPACE  (solo provee altura al documento)
   ============================================================ */
#scroll-space {
  position: relative;
  z-index: 0;
}

.driver { pointer-events: none; }

/* ============================================================
   SECCIONES FIJAS — apiladas por z-index (asignado en JS)
   ============================================================ */
.book-section {
  position: fixed;
  inset: 0;
  height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0e0e0e;
  pointer-events: none;
}

/* Último libro: fondo blanco para la transición a Mey */
.book-section.is-white {
  background: #ffffff;
}

/* ============================================================
   ESCENA 3D
   ============================================================ */
.scene {
  perspective: 1400px;
  perspective-origin: 50% 50%;
}

/*
   Contenedor del libro — proporción 3:4
   object-fit:contain en todas las imágenes → sin recorte

   DIMENSIONES IDEALES DE IMÁGENES:
     Tapas:  600 × 800 px  (ratio 3:4)
     Páginas dobles: 800 × 600 px (4:3 apaisado)
*/
.book {
  position: relative;
  width: 72vw;
  max-width: 280px;
  aspect-ratio: 3 / 4;
  transform-style: preserve-3d;
}

.book-front {
  position: absolute;
  inset: 0;
  transform-origin: left center;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  z-index: 2;
  will-change: transform, opacity;
  background: #111;
  border-radius: 2px 5px 5px 2px;
}

.book-front img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: inherit;
}

/* Marco interior decorativo */
.book-front::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.10),
    inset 0 0 0 6px rgba(0, 0, 0, 0.20),
    inset 0 0 0 7px rgba(200, 180, 140, 0.15),
    4px 8px 28px rgba(0, 0, 0, 0.6);
  pointer-events: none;
  z-index: 5;
}

/* Marco sobre fondo blanco: sin sombra exterior oscura */
.book-section.is-white .book-front::after {
  box-shadow:
    inset 0 0 0 1px rgba(0, 0, 0, 0.08),
    inset 0 0 0 6px rgba(0, 0, 0, 0.04),
    inset 0 0 0 7px rgba(150, 130, 100, 0.12),
    4px 8px 28px rgba(0, 0, 0, 0.12);
}

.book-spread {
  position: absolute;
  inset: 0;
  opacity: 0;
  z-index: 1;
  will-change: opacity, transform;
  background: #1a1a1a;
  border-radius: 3px;
}

/* Spreads del libro blanco */
.book-section.is-white .book-spread {
  background: #ffffff;
}

.book-spread img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: inherit;
}

/* ============================================================
   STRIP DE TEXTO — desliza de izquierda a derecha
   ============================================================ */
.book-strip {
  position: absolute;
  bottom: 14%;
  left: 0;
  right: 0;
  pointer-events: none;
  text-align: left;
  padding: 0 8vw;
}

.book-strip-text {
  display: inline-block;
  white-space: nowrap;
  font-size: clamp(0.53rem, 1.8vw, 0.66rem);
  letter-spacing: 0.14em;
  color: rgba(240, 237, 230, 0.5);
  font-style: italic;
}

/* Strip sobre fondo blanco */
.book-section.is-white .book-strip-text {
  color: rgba(30, 20, 10, 0.35);
}

del {
  text-decoration-color: currentColor;
}

/* ============================================================
   ARTISTA — siempre al fondo (z-index: 10 en CSS)
   Fondo blanco para la transición de zoom del último libro
   ============================================================ */
#artist-section {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100svh;
  display: flex;
  flex-direction: column;   /* foto + nombre arriba, footer abajo */
  align-items: center;
  justify-content: center;
  gap: 0;
  background: #ffffff;
  z-index: 10;
  pointer-events: none;
}

.artist-inner {
  text-align: center;
  max-width: 420px;
  padding: 0 24px;
  opacity: 0;
  transform: translateY(30px);
}

.artist-inner img {
  width: 160px;
  height: 160px;
  object-fit: cover;
  border-radius: 50%;
  margin: 0 auto 24px;
  box-shadow: 0 6px 30px rgba(0, 0, 0, 0.15);
}

.artist-name {
  font-size: clamp(1.75rem, 9vw, 3.06rem);
  font-weight: 400;
  letter-spacing: 0.04em;
  line-height: 1;
  color: #1a1a1a;
}

.artist-name span {
  color: #c84535;
}

/* Footer con íconos sociales — aparece después de Mey */
.site-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  margin-top: 32px;
  opacity: 0;
  transform: translateY(16px);
}

.site-footer a {
  display: flex;
  color:#c84535;
  transition: color 0.2s, opacity 0.2s;
  opacity: 0.75;
}

.site-footer a:hover {
  color: #1a1a1a;
  opacity: 1;
}

.site-footer svg {
  width: 22px;
  height: 22px;
}

/* ============================================================
   MENÚ — tres puntos fijos
   ============================================================ */
#menu-btn {
  position: fixed;
  top: 24px;
  right: 20px;
  z-index: 500;
  background: none;
  border: none;
  cursor: pointer;
  padding: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  opacity: 0.45;
  transition: opacity 0.25s;
  -webkit-tap-highlight-color: transparent;
}

#menu-btn:hover,
#menu-btn.is-open {
  opacity: 1;
}

#menu-btn span {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #c84535;   /* mismo color que el overlay del menú */
  display: block;
  transition: background 0.25s;
}

/* Sobre fondos blancos (cuando el último libro está activo) */
/* Se resuelve con JS si hace falta, por ahora el contraste es suficiente */

/* ============================================================
   OVERLAY DEL MENÚ
   ============================================================ */
#menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;            /* explícito para evitar bugs mobile */
  height: 100%;
  min-height: 100svh;
  z-index: 400;
  background: #c84535;   /* terracota — cambiar a gusto */
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 0 10vw;
  visibility: hidden;    /* gsap autoAlpha lo maneja */
  opacity: 0;
  pointer-events: none;
  overflow: hidden;
}

#menu-overlay[aria-hidden="false"] {
  pointer-events: auto;
}

#menu-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

#menu-nav > li {
  overflow: hidden;
}

#menu-nav > li > a,
#menu-nav > li > button {
  display: block;
  font-family: Georgia, serif;
  font-size: clamp(1.75rem, 7vw, 3.06rem);
  font-weight: 400;
  color: #f5ede6;
  text-decoration: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  letter-spacing: 0.01em;
  line-height: 1.15;
  text-align: left;
  transition: opacity 0.2s;
  display: flex;
  align-items: center;
  gap: 0.5em;
}

#menu-nav > li > a:hover,
#menu-nav > li > button:hover {
  opacity: 0.7;
}

.works-arrow {
  font-size: 0.5em;
  transition: transform 0.25s;
  display: inline-block;
}

#works-toggle[aria-expanded="true"] .works-arrow {
  transform: rotate(180deg);
}

/* Sub-lista de libros */
#works-list {
  list-style: none;
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.35s ease;
  padding-left: 1.2em;
}

#works-list.open {
  max-height: 400px;
}

#works-list li a {
  display: block;
  font-family: Georgia, serif;
  font-size: clamp(0.88rem, 3.5vw, 1.22rem);
  color: rgba(245, 237, 230, 0.75);
  text-decoration: none;
  padding: 4px 0;
  transition: opacity 0.2s;
}

#works-list li a:hover {
  opacity: 0.6;
}

/* ============================================================
   DESKTOP (≥ 768px)
   ============================================================ */
@media (min-width: 768px) {
  .book {
    width: 36vw;
    max-width: 380px;
  }

  .artist-inner img {
    width: 220px;
    height: 220px;
  }

  #menu-btn {
    top: 32px;
    right: 32px;
  }
}