/* Book Promotional Banner */
.book-promo-banner {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-container) 100%);
  color: var(--on-primary);
  padding: 12px 20px;
  text-align: center;
  position: relative;
  margin-top: 60px; /* Account for fixed navbar */
  z-index: 900;
  box-shadow: 0 2px 8px var(--shadow);
}

.book-promo-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
  flex-wrap: wrap;
}

.book-promo-text {
  font-size: 14px;
  font-weight: 500;
  line-height: 1.4;
  flex: 1;
  min-width: 250px;
}

.book-promo-cta {
  background-color: rgba(255, 255, 255, 0.2);
  color: var(--on-primary);
  padding: 8px 16px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 13px;
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
  flex-shrink: 0;
}

.book-promo-cta:hover {
  background-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.book-promo-close {
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--on-primary);
  font-size: 18px;
  cursor: pointer;
  padding: 4px;
  opacity: 0.7;
  transition: opacity 0.3s ease;
  line-height: 1;
}

.book-promo-close:hover {
  opacity: 1;
}

/* Adjust main content margin when banner is present */
.book-promo-banner + .main-content {
  margin-top: 0;
}

/* Mobile responsiveness */
@media (max-width: 768px) {
  .book-promo-banner {
    padding: 10px 15px;
  }
  
  .book-promo-content {
    gap: 15px;
  }
  
  .book-promo-text {
    font-size: 13px;
    min-width: 200px;
  }
  
  .book-promo-cta {
    padding: 6px 12px;
    font-size: 12px;
  }
  
  .book-promo-close {
    right: 10px;
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  .book-promo-content {
    flex-direction: column;
    text-align: center;
  }
  
  .book-promo-text {
    min-width: auto;
  }
}

/* Hidden state */
.book-promo-banner.hidden {
  display: none;
}