body {
  font-size: 18px;
  line-height: 1.7;
  margin: 0;
  padding: 0;
  background: url('parallax_background.webp') no-repeat center center fixed;
  background-size: cover;
  color: #333;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

header {
  background: linear-gradient(to bottom, rgba(253, 252, 251, 0.95), rgba(226, 209, 195, 0.8));
  color: #333;
  padding: 100px 20px 60px;
  text-align: center;
}

header img {
  width: 180px;
  border-radius: 12px;
  margin-top: 30px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

h1 {
  font-size: 3em;
  margin-bottom: 0.2em;
}

h2 {
  font-weight: 400;
  color: #333;
  font-size: 1.8em;
}

section {
  padding: 60px 20px;
  max-width: 800px;
  margin: 40px auto;
  background-color: rgba(255, 255, 255, 0.9);
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.book-section {
  background-color: rgba(249, 249, 249, 0.95);
  text-align: center;
}

footer {
  text-align: center;
  padding: 20px;
  background: rgba(240, 240, 240, 0.95);
  font-size: 0.9em;
  border-top: 1px solid #ddd;
}

a.button {
  display: inline-block;
  background: #333;
  color: #fff;
  padding: 12px 24px;
  border-radius: 5px;
  text-decoration: none;
  margin-top: 10px;
  transition: background 0.3s ease;
}

a.button:hover {
  background: #555;
}

iframe {
  width: 100%;
  height: 500px;
  border: none;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* Responsive */
@media (max-width: 600px) {
  .navbar {
    flex-direction: column;
    align-items: center;
  }
  .navbar .nav-links {
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }
}