body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  background-color: #f8f9fa;
  color: #1a1a1a;
}
h1, h2 {
  font-family: 'Playfair Display', serif;
  color: #002244;
}
header .hero {
  background: url('https://upload.wikimedia.org/wikipedia/commons/8/85/hero.jpg') center/cover no-repeat;
  height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
}
header .overlay {
  background-color: rgba(0, 51, 102, 0.8);
  color: white;
  text-align: center;
  padding: 30px;
  border-radius: 8px;
  animation: fadeIn 1s ease-in-out;
}
.btn-group {
  margin-top: 20px;
}
.btn {
  background-color: #009999;
  color: white;
  padding: 10px 20px;
  margin: 5px;
  border: none;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s ease;
}
.btn:hover {
  background-color: #007777;
}
main {
  max-width: 1100px;
  margin: auto;
}
section {
  padding: 60px 20px;
  margin-bottom: 0;
  background-size: cover;
  background-attachment: fixed;
  background-position: center;
  color: #000;
  text-align: justify;
}
#bemutatkozas {
  background-image: url('https://upload.wikimedia.org/wikipedia/commons/0/0c/bemutatkozas.jpg');
}
#referenciak {
  background-image: url('https://upload.wikimedia.org/wikipedia/commons/f/f6/referenciak.jpg');
}
#kapcsolat {
  background-image: url('https://upload.wikimedia.org/wikipedia/commons/b/b2/kapcsolat.jpg');
}
ul {
  padding-left: 20px;
}
footer {
  background-color: #002244;
  color: white;
  text-align: center;
  padding: 20px;
}
a {
  color: #007777;
  text-decoration: none;
}
.fade-in {
  animation: fadeIn 1s ease-out both;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}