body {
  margin: 0;
  font-family: 'Poppins', sans-serif;
  background-color: #0a0a0a;
  color: #fff;
  transition: background-color 0.3s ease;
}

header {
  text-align: center;
  padding: 60px 20px;
  background: radial-gradient(circle at top, #1e1e1e, #0a0a0a);
}

h1 {
  color: #FF4EDB;
  font-family: 'Segoe Script', cursive;
  font-size: 3em;
  text-shadow: 0 0 8px #FF4EDB, 0 0 16px #FF4EDB;
}

.banner {
  max-width: 700px;
  height: 450px;
  margin-top: 20px;
  filter: drop-shadow(0 0 8px #FF4EDB);
}

nav {
  text-align: center;
  margin: 20px 0;
}

nav a {
  color: #2AF56D;
  margin: 0 15px;
  text-decoration: none;
  font-weight: bold;
}

.section {
  padding: 40px 20px;
  max-width: 1000px;
  margin: auto;
}

.section h2 {
  color: #B254F1;
  text-shadow: 0 0 5px #B254F1;
}

.toggle-dark-mode {
  position: fixed;
  top: 10px;
  right: 10px;
  background: #222;
  color: #2AF56D;
  border: none;
  padding: 10px 15px;
  cursor: pointer;
  border-radius: 5px;
}

.dark-mode {
  background-color: #fff;
  color: #000;
}

.dark-mode h1, .dark-mode .section h2 {
  color: #000;
  text-shadow: none;
}

footer {
  text-align: center;
  padding: 20px;
  font-size: 0.9em;
  color: #666;
}