* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}
body {
  background: #ffffff;
  color: #333333;
  line-height: 1.6;
  transition: direction 0.3s ease;
}
header {
  background: #1e2a38;
  color: white;
  padding: 2rem 1rem;
  text-align: center;
}
header h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}
nav {
  text-align: center;
  margin: 1rem 0;
}
nav button {
  margin: 0 5px;
  padding: 0.5rem 1rem;
  font-weight: bold;
  background: #1e2a38;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}
nav button:hover {
  background: #305a91;
}
section {
  padding: 2rem 1rem;
  max-width: 900px;
  margin: auto;
}
section h2 {
  color: #1e2a38;
  margin-bottom: 1rem;
  font-size: 1.8rem;
}
section ul {
  margin-left: 1.5rem;
}
.contact {
  background: #f0f0f0;
  padding: 2rem 1rem;
  border-radius: 10px;
  margin-top: 2rem;
  color: #1e2a38;
}
.contact a {
  color: #1e2a38;
  text-decoration: none;
  font-weight: bold;
}
footer {
  background: #1e2a38;
  color: #ccc;
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
  margin-top: 2rem;
}
.lang {
  display: none;
}
.active {
  display: block;
}
@media (max-width: 600px) {
  header h1 {
    font-size: 2rem;
  }
}