/* ==========================================================================
   Editorial Zénit Pasatiempos
   El motivo visual es la propia sopa de letras: rejilla tenue de fondo y
   el amarillo usado como marcador, igual que cuando encuentras una palabra.
   Fondo papel, tinta azul. El color acentua, no tapiza.
   Tipografia grande a proposito: el publico es el mismo que el del libro.
   ========================================================================== */

:root {
  --papel:      #FBF9F5;
  --papel-hondo:#F3EEE4;
  --blanco:     #FFFFFF;

  --tinta:      #14243F;
  --tinta-media:#4A5670;
  --tinta-suave:#7C879C;

  --azul:       #16386B;
  --azul-noche: #0C1B31;

  --ambar:      #F7B733;
  --ambar-vivo: #FFC91B;
  --ambar-tenue:#FDE7B0;

  --linea:      #E4DDD0;
  --rejilla:    rgba(20, 36, 63, .055);

  /* Degradado de los paneles oscuros: azul del libro arriba a la izquierda,
     cayendo hacia noche. El radial da el punto de luz que evita el bloque plano. */
  --degradado-hondo:
    radial-gradient(120% 140% at 12% -10%, rgba(58,108,182,.50) 0%, transparent 60%),
    radial-gradient(90% 120% at 100% 110%, rgba(247,183,51,.12) 0%, transparent 55%),
    linear-gradient(142deg, #1A3663 0%, #12294B 46%, #0A1526 100%);

  --ancho: 1180px;
  --radio: 18px;
  --sombra: 0 2px 4px rgba(20,36,63,.04), 0 12px 32px rgba(20,36,63,.07);
  --sombra-alta: 0 4px 8px rgba(20,36,63,.05), 0 28px 60px rgba(20,36,63,.13);

  --display: "Fraunces", Georgia, serif;
  --texto: "Figtree", -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--papel);
  color: var(--tinta);
  font-family: var(--texto);
  font-size: 19px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--azul); }

.contenedor {
  width: 100%;
  max-width: var(--ancho);
  margin-inline: auto;
  padding-inline: 26px;
}

/* --- La rejilla de la sopa de letras, como textura de fondo --- */
.rejilla {
  position: relative;
  isolation: isolate;
}
.rejilla::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, var(--rejilla) 1px, transparent 1px),
    linear-gradient(to bottom, var(--rejilla) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 90% 75% at 50% 30%, #000 30%, transparent 78%);
}

/* ==========================================================================
   Cabecera
   ========================================================================== */

.cabecera {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 249, 245, .82);
  backdrop-filter: saturate(1.6) blur(12px);
  border-bottom: 1px solid var(--linea);
}
.cabecera .contenedor {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 32px;
  padding-block: 16px;
}

.marca {
  display: flex;
  align-items: baseline;
  gap: 9px;
  text-decoration: none;
  color: var(--tinta);
}
.marca b {
  font-family: var(--display);
  font-weight: 700;
  font-size: 25px;
  letter-spacing: -.01em;
}
.marca i {
  font-style: normal;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .26em;
  color: var(--tinta-suave);
  text-transform: uppercase;
}

.menu {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 26px;
  list-style: none;
  margin: 0; padding: 0;
  font-size: 17px;
  font-weight: 500;
}
.menu a {
  color: var(--tinta-media);
  text-decoration: none;
  position: relative;
  padding-block: 3px;
}
.menu a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 3px;
  border-radius: 3px;
  background: var(--ambar);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .22s ease;
}
.menu a:hover, .menu a:focus-visible { color: var(--tinta); }
.menu a:hover::after, .menu a:focus-visible::after { transform: scaleX(1); }

/* ==========================================================================
   Botones
   ========================================================================== */

.boton {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--texto);
  font-size: 18px;
  font-weight: 600;
  text-decoration: none;
  padding: 15px 30px;
  border-radius: 999px;
  border: 1.5px solid transparent;
  transition: transform .18s cubic-bezier(.2,.7,.3,1), box-shadow .18s ease,
              background-color .18s ease, border-color .18s ease;
}
.boton:hover { transform: translateY(-2px); }

.boton--solido {
  background: var(--tinta);
  color: var(--papel);
  box-shadow: 0 6px 18px rgba(20,36,63,.2);
}
.boton--solido:hover { background: var(--azul); box-shadow: 0 12px 28px rgba(20,36,63,.26); }

.boton--ambar {
  background: var(--ambar-vivo);
  color: var(--azul-noche);
  box-shadow: 0 6px 20px rgba(247,183,51,.4);
}
.boton--ambar:hover { background: #FFD64A; box-shadow: 0 12px 30px rgba(247,183,51,.5); }

.boton--borde {
  background: transparent;
  color: var(--tinta);
  border-color: var(--linea);
}
.boton--borde:hover { border-color: var(--tinta); background: var(--blanco); }

.boton--claro {
  background: rgba(255,255,255,.09);
  color: #fff;
  border-color: rgba(255,255,255,.3);
}
.boton--claro:hover { background: rgba(255,255,255,.16); border-color: rgba(255,255,255,.6); }

/* ==========================================================================
   Portada
   ========================================================================== */

.hero { padding-block: 84px 96px; overflow: hidden; }
.hero .contenedor {
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: 72px;
  align-items: center;
}

.antetitulo {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--tinta-media);
  background: var(--blanco);
  border: 1px solid var(--linea);
  padding: 8px 17px;
  border-radius: 999px;
  margin-bottom: 26px;
}
.antetitulo::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--ambar);
}

.hero h1 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(40px, 5.4vw, 66px);
  line-height: 1.06;
  letter-spacing: -.022em;
  margin: 0 0 24px;
  text-wrap: balance;
}

/* El marcador: como subrayar una palabra encontrada en la sopa */
.marcado {
  background: linear-gradient(transparent 58%, var(--ambar-tenue) 58%, var(--ambar-tenue) 94%, transparent 94%);
  padding-inline: 2px;
}

.hero p.entrada {
  font-size: 21px;
  line-height: 1.58;
  color: var(--tinta-media);
  margin: 0 0 36px;
  max-width: 33em;
}

.acciones { display: flex; flex-wrap: wrap; gap: 14px; }

.aval {
  margin-top: 30px;
  font-size: 16px;
  color: var(--tinta-suave);
  display: flex;
  align-items: center;
  gap: 9px;
}
.aval svg { flex: none; }

/* --- El libro flotando --- */
.libro { position: relative; justify-self: center; }
.libro img {
  width: min(370px, 78vw);
  border-radius: 4px;
  box-shadow: var(--sombra-alta);
  transform: rotate(-2.4deg);
  transition: transform .5s cubic-bezier(.2,.7,.3,1);
}
.libro:hover img { transform: rotate(0deg) translateY(-6px); }

/* ==========================================================================
   Cifras — tarjeta oscura flotando sobre el papel
   ========================================================================== */

.cifras { margin-block: 0 34px; }
.cifras .panel {
  background-color: var(--azul-noche);
  background-image: var(--degradado-hondo);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radio);
  padding: 44px 40px;
  box-shadow: var(--sombra-alta);
}
.cifras ul {
  list-style: none; margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}
.cifras li {
  text-align: center;
  padding-inline: 10px;
  border-left: 1px solid rgba(255,255,255,.12);
  cursor: default;
}
.cifras li:first-child { border-left: 0; }
.cifras b {
  display: block;
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(30px, 3.8vw, 46px);
  line-height: 1.05;
  color: var(--ambar-vivo);
  letter-spacing: -.02em;
  transition: transform .3s cubic-bezier(.2,.7,.3,1), text-shadow .3s ease;
  transform-origin: center bottom;
}
.cifras li:hover b {
  transform: scale(1.13);
  text-shadow: 0 6px 22px rgba(255,201,27,.42);
}
.cifras span {
  display: block;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: #97A6BF;
  margin-top: 9px;
  transition: color .3s ease;
}
.cifras li:hover span { color: #C3D0E4; }

/* ==========================================================================
   Secciones
   ========================================================================== */

.seccion { padding-block: 92px; }
.seccion--papel { background: var(--papel-hondo); }

.encabezado { max-width: 40em; margin-bottom: 52px; }
.encabezado .titulo {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(31px, 3.9vw, 46px);
  line-height: 1.14;
  letter-spacing: -.02em;
  margin: 0 0 14px;
  text-wrap: balance;
}
.encabezado p {
  font-size: 20px;
  color: var(--tinta-media);
  margin: 0;
}

/* --- Tarjetas de argumentos --- */
.tarjetas {
  list-style: none; margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(258px, 1fr));
  gap: 22px;
}
.tarjeta {
  background: var(--blanco);
  border: 1px solid var(--linea);
  border-radius: var(--radio);
  padding: 34px 30px;
  transition: transform .22s cubic-bezier(.2,.7,.3,1), box-shadow .22s ease;
}
.tarjeta:hover { transform: translateY(-5px); box-shadow: var(--sombra); }
.tarjeta h3 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 22px;
  line-height: 1.25;
  margin: 0 0 12px;
  letter-spacing: -.01em;
}
.tarjeta h3 em {
  font-style: normal;
  background: linear-gradient(transparent 62%, var(--ambar-tenue) 62%);
}
.tarjeta p { margin: 0; color: var(--tinta-media); font-size: 17.5px; }

/* --- Muestra del interior --- */
.muestras {
  list-style: none; margin: 0; padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(255px, 1fr));
  gap: 40px 30px;
}
.muestras figure { margin: 0; }
.muestras img {
  border-radius: 6px;
  border: 1px solid var(--linea);
  box-shadow: var(--sombra);
  transition: transform .4s cubic-bezier(.2,.7,.3,1), box-shadow .4s ease;
}
.muestras li:nth-child(1) img { transform: rotate(-1.8deg); }
.muestras li:nth-child(2) img { transform: rotate(1.2deg); }
.muestras li:nth-child(3) img { transform: rotate(-.8deg); }
.muestras li:hover img { transform: rotate(0) translateY(-8px); box-shadow: var(--sombra-alta); }

.muestras figcaption { margin-top: 20px; font-size: 17px; color: var(--tinta-media); }
.muestras figcaption strong {
  display: block;
  color: var(--tinta);
  font-size: 18.5px;
  font-weight: 600;
  margin-bottom: 3px;
}

/* ==========================================================================
   Bloque del regalo
   ========================================================================== */

.regalo { padding-block: 0 96px; }
.regalo .panel {
  background-color: var(--azul-noche);
  background-image: var(--degradado-hondo);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 26px;
  padding: 76px 44px;
  text-align: center;
  color: #fff;
  box-shadow: var(--sombra-alta);
  position: relative;
  overflow: hidden;
}
.regalo .panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 80% 90% at 50% 50%, #000 20%, transparent 75%);
}
.regalo .panel > * { position: relative; }
.regalo h2 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(30px, 3.9vw, 44px);
  line-height: 1.14;
  letter-spacing: -.02em;
  margin: 0 0 16px;
  text-wrap: balance;
}
.regalo p {
  font-size: 20px;
  color: #ADBBD2;
  max-width: 38em;
  margin: 0 auto 34px;
}

/* ==========================================================================
   Pagina del bono
   ========================================================================== */

.hoja { padding-block: 82px 96px; text-align: center; }
.hoja .titulo {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.08;
  letter-spacing: -.022em;
  margin: 0 0 18px;
  text-wrap: balance;
}
.hoja > .contenedor > p.entrada {
  font-size: 21px;
  color: var(--tinta-media);
  max-width: 33em;
  margin: 0 auto;
}
.descarga { margin-block: 42px 14px; }
.nota { font-size: 16.5px; color: var(--tinta-suave); }

.contenido {
  list-style: none;
  margin: 54px auto 0;
  padding: 12px 34px;
  max-width: 640px;
  text-align: left;
  background: var(--blanco);
  border: 1px solid var(--linea);
  border-radius: var(--radio);
  box-shadow: var(--sombra);
}
.contenido li {
  padding: 17px 0 17px 34px;
  border-bottom: 1px solid var(--linea);
  font-size: 17.5px;
  color: var(--tinta-media);
  position: relative;
}
.contenido li:last-child { border-bottom: 0; }
.contenido li::before {
  content: "";
  position: absolute;
  left: 2px; top: 25px;
  width: 15px; height: 8px;
  border-left: 2.5px solid var(--ambar);
  border-bottom: 2.5px solid var(--ambar);
  transform: rotate(-45deg);
}
.contenido strong { color: var(--tinta); }

/* ==========================================================================
   Captura de correo (pagina del bono)
   ========================================================================== */

.captura {
  margin: 64px auto 0;
  max-width: 640px;
  padding: 44px 38px 38px;
  text-align: center;
  background-color: var(--azul-noche);
  background-image: var(--degradado-hondo);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 26px;
  box-shadow: var(--sombra-alta);
  color: #fff;
}
.captura h2 {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(26px, 3.2vw, 34px);
  line-height: 1.16;
  letter-spacing: -.02em;
  margin: 0 0 14px;
}
.captura > p {
  font-size: 18px;
  color: #ADBBD2;
  margin: 0 auto 28px;
  max-width: 30em;
}
.captura strong { color: var(--ambar-vivo); font-weight: 600; }

.formulario {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.formulario input[type="email"] {
  flex: 1 1 240px;
  min-width: 0;
  font-family: var(--texto);
  font-size: 18px;
  padding: 15px 22px;
  border-radius: 999px;
  border: 1.5px solid rgba(255,255,255,.22);
  background: rgba(255,255,255,.07);
  color: #fff;
}
.formulario input::placeholder { color: #8496B2; }
.formulario input:focus {
  outline: none;
  border-color: var(--ambar);
  background: rgba(255,255,255,.12);
}
.formulario .boton { flex: none; background: var(--ambar-vivo); color: var(--azul-noche); }
.formulario .boton:hover { background: #FFD64A; }

.permiso {
  margin: 20px auto 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.5;
  color: #93A3BE;
}
.permiso label {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  text-align: left;
  cursor: pointer;
}
.permiso input { margin-top: 4px; accent-color: var(--ambar); flex: none; }

.oculto {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   Pie
   ========================================================================== */

.pie {
  background-color: var(--azul-noche);
  background-image: var(--degradado-hondo);
  color: #9BAAC4;
  padding-block: 62px 30px;
  font-size: 17px;
}
.pie a { color: #E3E9F2; text-decoration: none; }
.pie a:hover { color: var(--ambar-vivo); }
.pie .marca b { color: #fff; }
.pie .marca i { color: var(--ambar); }
.pie .columnas {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.3fr;
  gap: 44px;
  padding-bottom: 38px;
  border-bottom: 1px solid rgba(255,255,255,.13);
}
.pie h4 {
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  margin: 0 0 16px;
}
.pie ul { list-style: none; margin: 0; padding: 0; }
.pie li { padding-block: 5px; }
.pie .lema { margin: 18px 0 0; max-width: 26em; }
.legal { padding-top: 26px; font-size: 15.5px; color: #74849E; }

/* ==========================================================================
   Aparicion al hacer scroll
   ========================================================================== */

.aparece {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.3,1);
}
.aparece.visible { opacity: 1; transform: none; }

/* ==========================================================================
   Accesibilidad y responsive
   ========================================================================== */

:focus-visible { outline: 3px solid var(--ambar); outline-offset: 3px; border-radius: 4px; }

@media (max-width: 940px) {
  .hero { padding-block: 56px 68px; }
  .hero .contenedor { grid-template-columns: 1fr; gap: 52px; text-align: center; }
  .hero p.entrada { margin-inline: auto; }
  .acciones, .aval { justify-content: center; }
  .libro { order: -1; }
  .cifras ul { grid-template-columns: repeat(2, 1fr); gap: 34px 16px; }
  .cifras li:nth-child(3) { border-left: 0; }
  .cifras .panel { padding: 38px 26px; }
  .seccion { padding-block: 64px; }
  .encabezado { margin-bottom: 38px; }
  .regalo .panel { padding: 56px 26px; }
  .pie .columnas { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 560px) {
  body { font-size: 18px; }
  .cifras li { border-left: 0; }
  .boton { width: 100%; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
  .aparece { opacity: 1; transform: none; }
  .libro img, .muestras img { transform: none !important; }
}