/* Existing styles... */
body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f4f4f4;
  color: #333;
}
header {
  background: #0056b3;
  color: white;
  padding: 20px;
  text-align: center;
  position: sticky;
  top: 0;
  z-index: 1000;
}
nav {
  background: #003f8a;
  padding: 10px;
  text-align: center;
}
nav a {
  color: white;
  margin: 0 10px;
  text-decoration: none;
}
section {
  padding: 20px;
  max-width: 800px;
  margin: auto;
}
footer {
  background: #222;
  color: white;
  text-align: center;
  padding: 20px;
  margin-top: 20px;
}

/* WhatsApp floating button */
.whatsapp-float {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #25d366;
  color: white;
  border-radius: 50%;
  text-align: center;
  font-size: 24px;
  padding: 15px;
  z-index: 1000;
  text-decoration: none;
}
.whatsapp-float:hover {
  background-color: #1ebd5a;
}

/* Responsive */
@media (max-width: 768px) {
  nav a {
    display: block;
    margin: 10px 0;
  }
  section {
    padding: 10px;
  }
}

/* Animations */
.fade-in {
  animation: fadeIn 1.2s ease-in;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
nav a:hover {
  text-decoration: underline;
  transition: all 0.3s ease-in-out;
}