body {
  background-color: #0a0a0a;
  color: #00ff99;
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  padding: 0;
}

header {
  background-color: #111;
  padding: 10px;
  text-align: center;
}

nav button,
nav a.repo {
  background: #1f1f1f;
  border: 1px solid #00ff99;
  color: #00ff99;
  padding: 10px 16px;
  margin: 4px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  text-decoration: none;
}

nav button:hover,
nav a.repo:hover {
  background-color: #00ff99;
  color: #000;
}

main {
  padding: 20px;
  max-width: 900px;
  margin: auto;
}

.page {
  display: none;
  animation: fadeIn 0.3s ease;
}

.page.active {
  display: block;
}

h1 {
  color: #00ff99;
  text-shadow: 0 0 6px #00ff99;
}

#counter {
  font-size: 2.5rem;
  text-shadow: 0 0 10px #00ff99;
}

canvas {
  margin-top: 20px;
  background: #111;
  border-radius: 12px;
  box-shadow: 0 0 20px #00ff99;
}

.stat-box {
  margin: 20px 0;
  background-color: #111;
  padding: 15px;
  border-radius: 10px;
  box-shadow: 0 0 10px #00ff99;
}

.fun-facts ul {
  lis