body {
  margin: 0;
  font-family: Arial;
  background: #0f1117;
  color: white;
}

nav {
  display: flex;
  justify-content: space-between;
  background: #1a1d26;
  padding: 15px;
}

button {
  margin: 5px;
  padding: 8px 12px;
  cursor: pointer;
}

.page {
  padding: 20px;
}

.hidden {
  display: none;
}

.hero {
  background: #1c1f2b;
  padding: 30px;
  border-radius: 10px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 10px;
}

.card {
  background: #1c1f2b;
  padding: 15px;
  border-radius: 10px;
}