body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #0f172a;
  color: #f1f5f9;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.container {
  text-align: center;
}

h1 {
  margin-bottom: 20px;
  font-size: 2rem;
}

.mode-buttons {
  margin-bottom: 15px;
}

.mode-buttons button {
  margin: 0 10px;
  padding: 8px 16px;
  font-size: 1rem;
  background-color: #10b981;
  border: none;
  border-radius: 6px;
  color: white;
  cursor: pointer;
  transition: background 0.3s ease;
}

.mode-buttons button:hover {
  background-color: #059669;
}

.mode-buttons select {
  padding: 8px;
  border-radius: 6px;
  font-size: 1rem;
  background-color: #1e293b;
  color: #f1f5f9;
  border: none;
  outline: none;
  cursor: pointer;
}

.scoreboard {
  display: flex;
  justify-content: space-around;
  align-items: center;
  gap: 40px;
  font-size: 1.2rem;
  margin: 20px 0;
  background-color: #1e293b;
  padding: 10px 20px;
  border-radius: 10px;
  color: #f1f5f9;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.scoreboard p {
  margin: 0;
  font-weight: bold;
}

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

.cell {
  width: 100px;
  height: 100px;
  font-size: 2rem;
  background-color: #1e293b;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  border-radius: 8px;
  transition: background 0.3s ease;
}

.cell:hover {
  background-color: #334155;
}

#status {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

#resetBtn {
  padding: 10px 20px;
  font-size: 1rem;
  background-color: #3b82f6;
  border: none;
  border-radius: 6px;
  color: white;
  cursor: pointer;
  transition: background 0.3s ease;
}

#resetBtn:hover {
  background-color: #2563eb;
}