body {
  margin: 0;
  font-family: 'Courier New', monospace;
  background-color: #dbeed5; /* soft XP green */
  color: #1a1a1a;
  background-image: url('https://i.imgur.com/X9qEe9a.png'); /* optional: add terminal grid bg */
  background-repeat: repeat;
}

header {
  background-color: #b7d7b7;
  border-bottom: 2px solid #6a9e6a;
  padding: 1rem;
  text-align: center;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

header h1 {
  margin: 0;
  font-size: 2rem;
  color: #2e4e2e;
}

nav ul {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: flex;
  justify-content: center;
  gap: 1.5rem;
}

nav a {
  text-decoration: none;
  color: #3a5a3a;
  font-weight: bold;
  background-color: #e0f2e0;
  padding: 5px 10px;
  border-radius: 4px;
  transition: 0.2s ease;
}

nav a:hover {
  background-color: #c6e3c6;
  color: #1a3d1a;
}

main {
  max-width: 800px;
  margin: 2rem auto;
  padding: 1rem;
  background-color: #f2fdf2;
  border: 1px solid #a0c8a0;
  border-radius: 6px;
  box-shadow: inset 0 0 10px #bfe5bf;
}

footer {
  text-align: center;
  margin-top: 3rem;
  padding: 1rem;
  background-color: #b7d7b7;
  color: #3a5a3a;
  border-top: 2px solid #6a9e6a;
}