body {
  font-family: Arial, sans-serif;
  text-align: center;
  background: linear-gradient(to right, #667eea, #764ba2);
  margin: 0;
  color: #fff;
}

h1, h2 {
  margin-top: 30px;
}

input {
  padding: 10px;
  margin: 10px;
  font-size: 18px;
  border-radius: 10px;
  border: none;
  outline: none;
}

button {
  padding: 12px 25px;
  margin: 10px;
  font-size: 18px;
  background: #ff5e62;
  color: white;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: 0.3s;
}
button:hover {
  background: #ff9966;
}

.board {
  display: grid;
  grid-template-columns: repeat(3, 100px);
  gap: 10px;
  justify-content: center;
  margin: 20px auto;
}

.cell {
  width: 100px;
  height: 100px;
  background: #222;
  font-size: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.3s;
}

.cell:hover {
  background: #333;
}

#result {
  font-size: 24px;
  margin-top: 15px;
}