/* General Body Styles */
body {
  font-family: "Arial", sans-serif;
  background: linear-gradient(135deg, #6a11cb, #2575fc);
  margin: 0;
  padding: 0;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  color: white;
}

/* Container Styles */
.container {
  text-align: center;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 10px;
  padding: 30px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  width: 400px;
  min-height: 400px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

/* Header Styling */
h1 {
  font-size: 2.5rem;
  color: #333;
  margin-bottom: 20px;
}

/* Board Styles */
.board {
  display: grid;
  grid-template-columns: repeat(3, 120px);
  grid-template-rows: repeat(3, 120px);
  gap: 10px;
  margin-bottom: 30px;
}

/* Individual Cells */
.cell {
  width: 120px;
  height: 120px;
  background-color: #fff;
  border: 2px solid #ccc;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  font-weight: bold;
  color: #333;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.cell:hover {
  background-color: #f0f0f0;
}

.cell.taken {
  pointer-events: none;
  color: #555;
}

.winning-message {
  font-size: 1.5rem;
  margin-top: 20px;
  color: #333;
}

/* Restart Button */
button {
  padding: 12px 20px;
  font-size: 1.1rem;
  background-color: #28a745;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

button:hover {
  background-color: #218838;
}

button:active {
  transform: scale(0.98);
}

/* Responsive Styles */
@media (max-width: 500px) {
  .board {
    grid-template-columns: repeat(3, 100px);
    grid-template-rows: repeat(3, 100px);
  }

  .cell {
    width: 100px;
    height: 100px;
  }

  button {
    font-size: 1rem;
    padding: 10px 15px;
  }

  h1 {
    font-size: 2rem;
  }
}