/* Estilos para o botão de compra do ebook */
.ebook-promo-section {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--light-text);
  text-align: center;
  padding: 4rem 0;
  position: relative;
  overflow: hidden;
}

.ebook-promo-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, rgba(0,0,0,0) 70%);
}

.ebook-promo-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}

.ebook-promo-content h2 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  color: var(--light-text);
}

.ebook-promo-content p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.ebook-cover {
  max-width: 250px;
  border-radius: 8px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
  margin: 0 auto 2rem;
  display: block;
}

.price-tag {
  display: inline-block;
  margin-bottom: 2rem;
  font-size: 1.5rem;
}

.original-price {
  text-decoration: line-through;
  color: rgba(255, 255, 255, 0.7);
  margin-right: 1rem;
}

.promo-price {
  font-size: 2rem;
  font-weight: bold;
  color: var(--accent-color);
}

.btn-buy {
  display: inline-block;
  background-color: var(--accent-color);
  color: var(--dark-text);
  padding: 1rem 2.5rem;
  border-radius: 50px;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.2rem;
  transition: transform 0.3s, box-shadow 0.3s;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 1rem;
}

.btn-buy:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.btn-buy i {
  margin-right: 0.5rem;
}

/* Botão flutuante para compra do ebook */
.floating-buy-btn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background-color: var(--accent-color);
  color: var(--dark-text);
  padding: 1rem;
  border-radius: 50px;
  text-decoration: none;
  font-weight: bold;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: transform 0.3s, box-shadow 0.3s;
}

.floating-buy-btn:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.floating-buy-btn i {
  margin-right: 0.5rem;
}

/* Estilos responsivos */
@media (max-width: 768px) {
  .ebook-promo-content h2 {
    font-size: 2rem;
  }
  
  .price-tag {
    font-size: 1.2rem;
  }
  
  .promo-price {
    font-size: 1.8rem;
  }
  
  .btn-buy {
    padding: 0.8rem 2rem;
    font-size: 1.1rem;
  }
  
  .floating-buy-btn {
    padding: 0.8rem;
    bottom: 20px;
    right: 20px;
  }
}

@media (max-width: 480px) {
  .ebook-promo-content h2 {
    font-size: 1.8rem;
  }
  
  .ebook-cover {
    max-width: 200px;
  }
  
  .price-tag {
    font-size: 1.1rem;
  }
  
  .promo-price {
    font-size: 1.5rem;
  }
  
  .btn-buy {
    padding: 0.7rem 1.5rem;
    font-size: 1rem;
    width: 80%;
  }
}