/* ============================================================
   ebook.css — Razonando QuímicaMente
   Estilos propios de la página "eBook Introducción a la Química".
   Lo compartido (variables, reset, nav, breadcrumb, page-hero,
   hero-chips, botones, section, precio-badge, price-row, testi-*,
   cta-final, faq-grid, footer, reveal) vive en main.css.
   ============================================================ */


/* ── PRODUCTO PRINCIPAL ── */
.producto-section {
  background: white;
}

.producto-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 5rem;
  align-items: center;
}


/* ── COVER VISUAL ── */
.cover-wrap {
  position: relative;
  display: flex;
  justify-content: center;
}

.cover-book {
  width: 100%;
  max-width: 320px;
  border-radius: 22px;
  overflow: hidden;
  position: relative;
  border: 1px solid var(--verde-claro);
  box-shadow: 0 20px 60px rgba(78, 136, 128, 0.18);
}

.cover-book img {
  width: 100%;
  height: auto;
  display: block;
}


/* ── FLOATING BADGES ── */
.badge-float {
  position: absolute;
  background: white;
  border: 1px solid var(--gris-claro);
  border-radius: 12px;
  padding: 0.6rem 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.07);
  font-size: 0.78rem;
  font-weight: 700;
  font-family: 'Mulish', Arial, sans-serif;
  color: var(--tinta);
}

.badge-float-left {
  left: -2rem;
  top: 28%;
  animation: float 3.5s ease-in-out infinite;
}

.badge-float-top {
  right: -1.5rem;
  top: 18%;
  animation: float 4s ease-in-out infinite 0.8s;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-6px);
  }
}


/* ── TEXTO PRODUCTO ── */
.producto-text .section-title {
  margin-bottom: 0.4rem;
}

.producto-desc {
  font-size: 0.97rem;
  line-height: 1.9;
  color: var(--gris-medio);
  margin-bottom: 1.75rem;
}


/* ── CONTENIDOS ── */
.contenido-title {
  font-size: 0.75rem;
  font-weight: 700;
  font-family: 'Mulish', Arial, sans-serif;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--verde);
  margin-bottom: 0.85rem;
}

.contenido-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem 0.75rem;
  margin-bottom: 2rem;
}

.contenido-item {
  font-size: 0.85rem;
  color: var(--gris-medio);
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  line-height: 1.5;
  padding: 0.4rem 0.6rem;
  border-radius: 8px;
  transition: background 0.18s;
}

.contenido-item:hover {
  background: var(--verde-palido);
}

.contenido-item::before {
  content: '▫️';
  flex-shrink: 0;
  margin-top: 0.05rem;
}

.contenido-item-extra {
  background: var(--naranja-palido);
  border: 1px solid var(--naranja-claro);
  border-radius: 8px;
  padding: 0.4rem 0.75rem;
}

.contenido-item-extra::before {
  content: '✨';
}


/* ── PARA QUIÉN ── */
.para-quien-section {
  background: var(--crema);
}

.para-quien-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
  margin-top: 3rem;
}

.para-card {
  background: white;
  border: 1px solid var(--gris-claro);
  border-radius: 20px;
  padding: 2rem 1.75rem;
  transition: transform 0.25s, box-shadow 0.25s;
}

.para-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.07);
}

.para-card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.para-card:nth-child(1) .para-card-icon {
  background: var(--verde-palido);
  color: var(--verde);
}

.para-card:nth-child(2) .para-card-icon {
  background: var(--naranja-palido);
  color: var(--naranja);
}

.para-card:nth-child(3) .para-card-icon {
  background: var(--rojo-palido);
  color: var(--rojo);
}

.para-card:nth-child(4) .para-card-icon {
  background: var(--verde-palido);
  color: var(--verde);
}

.para-card h3 {
  font-size: 1rem;
  color: var(--tinta);
  margin-bottom: 0.5rem;
}

.para-card p {
  font-size: 0.87rem;
  line-height: 1.75;
  color: var(--gris-medio);
}


/* ── DETALLE / SPECS ── */
.specs-section {
  background: white;
}

.specs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.spec-item,
.spec-highlight {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.35rem 1.5rem;
  border: 1px solid var(--gris-claro);
  border-radius: 16px;
  transition: border-color 0.2s;
}

/* La altura pareja de las 4 tarjetas la calcula JS (equalizeSpecsGrid en
   components.js), tomando como referencia la más alta (spec-highlight). */

.spec-item:hover {
  border-color: var(--verde-claro);
}

/* Box destacado ("¿Sabías que...?") dentro de specs-grid: mismas
   dimensiones que spec-item, con fondo/borde verdes propios. */
.spec-highlight {
  background: var(--verde-palido);
  border-color: var(--verde-claro);
  padding: 1.5rem 1.75rem;
}

.spec-highlight-icon {
  font-size: 1.3rem;
}

.spec-highlight strong {
  display: block;
  font-family: 'Nunito', Arial, sans-serif;
  font-size: 0.95rem;
  color: var(--verde);
  margin-bottom: 0.35rem;
}

.spec-highlight p {
  font-size: 0.85rem;
  color: var(--gris-medio);
  line-height: 1.7;
}

.spec-icon {
  width: 40px;
  height: 40px;
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  background: var(--verde-palido);
}

.spec-info strong {
  display: block;
  font-size: 0.9rem;
  color: var(--tinta);
  margin-bottom: 0.25rem;
  font-family: 'Nunito', sans-serif;
}

.spec-info p {
  font-size: 0.82rem;
  color: var(--gris-medio);
  line-height: 1.5;
}


/* ── TESTIMONIOS ── */
.testimonios-section {
  background: var(--crema);
}

.testimonios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 2.5rem;
}

/* Sobre fondo crema las tarjetas van en blanco (override de main.css) */
.testimonios-section .testi-card {
  background: white;
  position: relative;
}


/* ── FAQ ── */
.faq-section {
  background: white;
}

.faq-section .section-title {
  margin-bottom: 2rem;
}

.faq-item {
  background: var(--crema);
  border: 1px solid var(--gris-claro);
  border-radius: 16px;
  padding: 1.5rem 1.75rem;
}

.faq-item h4 {
  font-size: 0.95rem;
  color: var(--tinta);
  margin-bottom: 0.6rem;
  font-family: 'Nunito', sans-serif;
}

.faq-item p {
  font-size: 0.85rem;
  line-height: 1.75;
  color: var(--gris-medio);
}


/* ── MÁS PRODUCTOS ── */
.mas-productos {
  background: var(--crema);
  padding: 4.5rem 5%;
}

.mas-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.mas-card {
  background: white;
  border: 1px solid var(--gris-claro);
  border-radius: 18px;
  padding: 1.75rem;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s, box-shadow 0.25s;
  position: relative;
  overflow: hidden;
}

.mas-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s;
}

.mas-card:nth-child(1)::before {
  background: var(--naranja);
}

.mas-card:nth-child(2)::before {
  background: var(--verde);
}

.mas-card:hover::before {
  transform: scaleX(1);
}

.mas-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.07);
}

.mas-card-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 1rem;
}

.mas-card:nth-child(1) .mas-card-icon {
  background: var(--naranja-palido);
  color: var(--naranja);
}

.mas-card:nth-child(2) .mas-card-icon {
  background: var(--verde-palido);
  color: var(--verde);
}

.mas-card h3 {
  font-size: 1rem;
  color: var(--tinta);
  margin-bottom: 0.5rem;
}

.mas-card p {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--gris-medio);
  margin-bottom: auto;
}

.mas-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--gris-claro);
}

.mas-pill {
  font-size: 0.72rem;
  font-weight: 700;
  font-family: 'Mulish', Arial, sans-serif;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  border: 1px solid;
}

.mas-card:nth-child(1) .mas-pill {
  background: var(--naranja-palido);
  color: var(--naranja-oscuro);
  border-color: var(--naranja-claro);
}

.mas-card:nth-child(2) .mas-pill {
  background: var(--verde-palido);
  color: var(--verde);
  border-color: var(--verde-claro);
}

.mas-arrow {
  font-size: 1rem;
  color: var(--gris-medio);
  transition: transform 0.2s;
}

.mas-card:hover .mas-arrow {
  transform: translateX(4px);
}


/* ── PREVIEW GALERÍA ── */
.preview-section {
  background: var(--verde-fondo);
  padding: 5rem 5%;
  position: relative;
  overflow: hidden;
}

.preview-section .section-label {
  color: var(--verde);
}

.preview-section .section-title {
  color: var(--tinta);
}

.preview-section .divider {
  background: var(--naranja);
}

.preview-desc {
  color: var(--gris-medio);
  font-size: 0.97rem;
  line-height: 1.8;
  max-width: 560px;
  margin-bottom: 2.5rem;
}

.preview-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  margin: 0 auto 1rem;
  /* Sin esto, en monitores grandes (section tiene padding 5%, no un
     max-width propio) las columnas se estiran mucho más allá de los
     ~450px nativos de cada preview y se ven pixeladas. */
  max-width: 1100px;
}

.preview-strip-2 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  justify-items: center;
  margin: 0 auto;
  max-width: 1100px;
}

.preview-img-wrap {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--gris-claro);
  transition: transform 0.25s, box-shadow 0.25s;
  cursor: pointer;
  background: white;
}

.preview-img-wrap:hover {
  transform: translateY(-5px) scale(1.02);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.35);
}

.preview-img-wrap img {
  width: 100%;
  height: auto;
  display: block;
}

.preview-img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(46, 94, 88, 0.85) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.25s;
  display: flex;
  align-items: flex-end;
  padding: 0.75rem;
}

.preview-img-wrap:hover .preview-img-overlay {
  opacity: 1;
}

.preview-img-label {
  font-size: 0.72rem;
  font-weight: 700;
  font-family: 'Mulish', Arial, sans-serif;
  color: white;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.preview-nota {
  margin-top: 1.75rem;
  background: rgba(250, 151, 85, 0.12);
  border: 1px solid rgba(250, 151, 85, 0.22);
  border-radius: 12px;
  padding: 0.9rem 1.2rem;
  font-size: 0.82rem;
  color: var(--gris-medio);
  line-height: 1.6;
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
}


/* ── RESPONSIVE ── */
@media (max-width: 960px) {
  .producto-grid {
    grid-template-columns: 1fr;
  }

  .producto-grid .cover-wrap {
    order: -1;
    justify-content: flex-start;
  }

  .para-quien-grid,
  .specs-grid,
  .mas-grid {
    grid-template-columns: 1fr;
  }

  .testimonios-grid {
    grid-template-columns: 1fr 1fr;
  }

  .badge-float {
    display: none;
  }

  .preview-strip,
  .preview-strip-2 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 600px) {
  .testimonios-grid {
    grid-template-columns: 1fr;
  }

  .contenido-grid {
    grid-template-columns: 1fr;
  }

  .preview-strip,
  .preview-strip-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}