* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: "Arial", sans-serif;
  background-color: #f0f0f0;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.container {
  text-align: center;
  background-color: white;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

h1 {
  color: #333;
  margin-bottom: 1rem;
}

#status {
  margin-bottom: 1rem;
  font-size: 1.2rem;
  font-weight: bold;
  color: #555;
}

.board {
  display: grid;
  grid-template-columns: repeat(3, 100px);
  grid-template-rows: repeat(3, 100px);
  gap: 5px;
  margin: 0 auto 1.5rem;
  max-width: 310px;
}

.cell {
  background-color: #e0e0e0;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 2.5rem;
  font-weight: bold;
  cursor: pointer;
  transition: background-color 0.2s;
}

.cell:hover {
  background-color: #d0d0d0;
}

.cell.x {
  color: #e74c3c;
}

.cell.o {
  color: #3498db;
}

button {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  background-color: #3498db;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.2s;
}

button:hover {
  background-color: #2980b9;
}