/* ── Ebooks Section ── */
.ebooks { position: relative; overflow: hidden; }
.ebooks__glow {
  position: absolute;
  bottom: -100px; right: -150px;
  width: 500px; height: 400px;
  background: radial-gradient(ellipse, rgba(167,139,250,0.08) 0%, transparent 70%);
  pointer-events: none;
  border-radius: 50%;
}

.ebooks__main-title {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 800;
  margin-bottom: 0.75rem;
}
.ebooks__main-sub {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 540px;
  margin: 0 auto;
  line-height: 1.75;
}

.ebooks__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

/* Card */
.ebooks__card {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  padding: 2rem;
  border-radius: var(--radius-lg);
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--card-border);
  backdrop-filter: blur(16px);
  transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
}
.ebooks__card:hover {
  border-color: rgba(0,200,150,0.2);
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

/* Capa */
.ebooks__cover {
  flex-shrink: 0;
  width: 110px;
  height: 155px;
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.5), 4px 0 8px rgba(0,0,0,0.3);
  position: relative;
  overflow: hidden;
}
.ebooks__cover::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.15);
}
.ebooks__cover-badge {
  position: relative;
  font-size: 8px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.85);
  background: rgba(0,0,0,0.3);
  padding: 2px 7px;
  border-radius: 9999px;
}
.ebooks__cover-emoji {
  position: relative;
  font-size: 30px;
}
.ebooks__cover-title {
  position: relative;
  font-size: 9px;
  font-weight: 700;
  color: #fff;
  text-align: center;
  line-height: 1.3;
}
.ebooks__cover-sub {
  position: relative;
  font-size: 7px;
  font-weight: 600;
  color: rgba(255,255,255,0.6);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Info */
.ebooks__info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}
.ebooks__vol-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.ebooks__book-title {
  font-size: 1.1rem;
  font-weight: 800;
  line-height: 1.25;
  color: #fff;
}
.ebooks__subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
}
.ebooks__chapters {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-top: 0.25rem;
}
.ebooks__chapters li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.75);
}
.ebooks__btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-sm);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  margin-top: 0.5rem;
  width: fit-content;
  transition: opacity 0.2s, transform 0.2s;
}
.ebooks__btn:hover { opacity: 0.9; transform: translateY(-1px); }

@media (max-width: 900px) {
  .ebooks__grid { grid-template-columns: 1fr; }
}
@media (max-width: 500px) {
  .ebooks__card { flex-direction: column; align-items: center; text-align: center; }
  .ebooks__chapters li { justify-content: center; }
  .ebooks__btn { align-self: center; }
}