body {
  margin: 0;
  font-family: 'Poppins', sans-serif;
  background-color: #121212;
  color: #e0e0e0;
  line-height: 1.6;
}

header {
  text-align: center;
  padding: 2em;
  background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
}

h1 {
  color: #00d4ff;
  font-size: 2.5em;
}

.toc {
  text-align: center;
  margin: 1em 0;
}

button {
  background: #00d4ff;
  color: #121212;
  border: none;
  padding: 10px 20px;
  border-radius: 5px;
  cursor: pointer;
  font-weight: bold;
}

button:hover {
  background: #03a9f4;
}

.hidden {
  display: none;
}

#toc-list {
  list-style: none;
  padding: 0;
  margin-top: 1em;
}

#toc-list li a {
  color: #00d4ff;
  text-decoration: none;
}

main {
  padding: 2em;
  max-width: 1000px;
  margin: auto;
}

.game-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.game {
  background: #1e1e1e;
  border-radius: 10px;
  padding: 15px;
  text-align: center;
  transition: transform 0.3s ease;
}

.game:hover {
  transform: scale(1.05);
}

.game img {
  width: 100%;
  border-radius: 10px;
}

footer {
  text-align: center;
  padding: 1em;
  background-color: #0f0f0f;
  color: #888;
  font-size: 0.9em;
}