:root {
  --primary-color: #2D5A27;
  --secondary-color: #4CAF50;
  --text-color: #333;
  --background-color: #f5f5f5;
  --spacing-unit: 1rem;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--background-color);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: calc(var(--spacing-unit) * 2);
}

.book-showcase {
  display: flex;
  gap: calc(var(--spacing-unit) * 3);
  align-items: center;
  background: white;
  padding: calc(var(--spacing-unit) * 2);
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.book-cover {
  width: 300px;
  height: auto;
  border-radius: 5px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease;
}

.book-cover:hover {
  transform: scale(1.02);
}

.book-info {
  flex: 1;
}

h1 {
  color: var(--primary-color);
  font-size: 2rem;
  margin-bottom: var(--spacing-unit);
}

h2 {
  color: var(--secondary-color);
  font-size: 1.5rem;
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.book-details {
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.book-details p {
  margin-bottom: calc(var(--spacing-unit) * 0.5);
}

.cta-buttons {
  display: flex;
  gap: var(--spacing-unit);
  flex-wrap: wrap;
}

.styled-button {
  padding: 12px 24px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  text-align: center;
}

.styled-button.primary {
  background-color: var(--primary-color);
  color: white;
}

.styled-button.secondary {
  background-color: var(--secondary-color);
  color: white;
}

.styled-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.styled-button.primary:hover {
  background-color: #234521;
}

.styled-button.secondary:hover {
  background-color: #45a049;
}

/* Responsividade */
@media (max-width: 768px) {
  .book-showcase {
    flex-direction: column;
    text-align: center;
    padding: var(--spacing-unit);
  }

  .book-cover {
    width: 80%;
    max-width: 300px;
    margin-bottom: calc(var(--spacing-unit) * 2);
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.2rem;
  }

  .cta-buttons {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: var(--spacing-unit);
  }

  .styled-button {
    width: 100%;
    padding: 15px;
  }
}