body {
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(135deg, #9c0a2c, #e44848);
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  background: #c2313b;
  padding: 40px;
  border-radius: 25px;
  box-shadow: 0 15px 35px rgba(0,0,0,0.3);
  text-align: center;
  width: 370px;
  animation: fadeIn 1s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

h1 {
  margin-bottom: 20px;
  color: #333;
}

.mode-buttons {
  margin-bottom: 20px;
}

.mode-btn {
  margin: 10px;
  padding: 12px 25px;
  background: linear-gradient(135deg, #ff7e5f, #feb47b);
  color: rgb(181, 20, 20);
  font-size: 1rem;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.3s;
}

.mode-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 20px rgba(255, 126, 95, 0.6);
}

.board {
  display: grid;
  grid-template-columns: repeat(3, 100px);
  gap: 15px;
  justify-content: center;
  margin-bottom: 20px;
}

.cell {
  width: 100px;
  height: 100px;
  background: #e08031;
  font-size: 3rem;
  font-weight: bold;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 15px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
  cursor: pointer;
  transition: background 0.3s, transform 0.2s;
}

.cell:hover {
  background: #e16445;
  transform: scale(1.08);
}

.status {
  margin-bottom: 15px;
  font-weight: 600;
  font-size: 1.2rem;
  color: #444;
}

.restart-btn {
  padding: 12px 30px;
  background: linear-gradient(135deg, #43cea2, #185a9d);
  color: white;
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.3s;
}

.restart-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 20px rgba(67, 206, 162, 0.6);
}