body {
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
  background: #121212;
  color: #f1f1f1;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  height: 100vh;
}

h1 {
  color: #00ffcc;
  text-shadow: 0 0 10px #00ffcc;
}

.game-board {
  display: grid;
  grid-template-columns: repeat(3, 100px);
  grid-template-rows: repeat(3, 100px);
  gap: 5px;
  margin: 20px 0;
}

.cell {
  background: #1e1e1e;
  border-radius: 8px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 2rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.cell:hover {
  background: #00ffcc;
  color: #121212;
  box-shadow: 0 0 10px #00ffcc;
}

button {
  padding: 10px 20px;
  font-size: 1rem;
  border: none;
  border-radius: 8px;
  background: #1e1e1e;
  color: #f1f1f1;
  cursor: pointer;
  box-shadow: 0 0 8px rgba(0, 255, 204, 0.6);
  transition: all 0.2s ease;
}

button:hover {
  background: #00ffcc;
  color: #121212;
  box-shadow: 0 0 15px #00ffcc;
}

#status {
  margin: 10px;
  font-size: 1.2rem;
}