body {
  margin: 0;
  padding: 0;
  background: #0a0a0a;
  font-family: 'Segoe UI', sans-serif;
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100dvh;
  overflow: hidden;
}

.game {
  text-align: center;
  width: 100%;
  max-width: 360px;
  padding: 1rem;
  box-sizing: border-box;
}

h1 {
  margin-bottom: 0.5rem;
  font-size: 2rem;
}

#status {
  margin-bottom: 1rem;
  font-weight: bold;
}

.board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.cell {
  width: 100%;
  aspect-ratio: 1;
  background: #1e1e1e;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 2.5rem;
  border-radius: 15px;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.cell.player1 {
  color: #00d9ff;
}

.cell.player2 {
  color: #ff4b91;
}

.cell.winner {
  background: #4caf50 !important;
  color: #fff;
  animation: pulse 0.5s infinite alternate;
}

@keyframes pulse {
  from { transform: scale(1); }
  to { transform: scale(1.1); }
}

.controls {
  margin-top: 20px;
}

button {
  padding: 12px 20px;
  font-size: 1rem;
  border: none;
  border-radius: 12px;
  background: #00b894;
  color: white;
  cursor: pointer;
  transition: background 0.2s;
}

button:hover {
  background: #01947a;
}

/* Modal for winner */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  justify-content: center;
  align-items: center;
}

.modal-content {
  background: #111;
  padding: 2rem;
  border-radius: 15px;
  text-align: center;
  color: white;
}

.hidden {
  display: none;
}