body {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-family: Arial, sans-serif;
  margin-top: 30px;
  background-color: #f4f7fa;
}

h1 {
  margin-bottom: 20px;
  color: #333;
  letter-spacing: 1px;
}

#settings {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

#settings input, #settings select {
  padding: 5px;
  font-size: 1em;
  border-radius: 5px;
  border: 1px solid #ccc;
}

#settings button {
  padding: 8px 15px;
  font-size: 1em;
  cursor: pointer;
  border: none;
  border-radius: 6px;
  background-color: #536dfe;
  color: #fff;
}

#settings button:hover {
  background-color: #3949ab;
}

#game {
  display: grid;
  grid-template-columns: repeat(3, 120px);
  grid-template-rows: repeat(3, 120px);
  gap: 10px;
  position: relative;
}

.cell {
  width: 120px;
  height: 120px;
  background-color: #ffffff;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 3em;
  font-weight: bold;
  cursor: pointer;
  border-radius: 15px;
  box-shadow: 0 5px 10px rgba(0,0,0,0.1);
  transition: all 0.3s ease;
}

.cell:hover {
  transform: scale(1.05);
  background-color: #e1f5fe;
}

.cell.X {
  color: #ff5252;
  transform: scale(1.2);
  transition: all 0.2s ease;
}

.cell.O {
  color: #536dfe;
  transform: scale(1.2);
  transition: all 0.2s ease;
}

#winner-line {
  position: absolute;
  height: 6px;
  background-color: gold;
  border-radius: 3px;
  z-index: 10;
  transform-origin: left center;
  transition: all 0.5s ease;
}

#status {
  margin-top: 20px;
  font-size: 1.3em;
  font-weight: bold;
  color: #555;
  min-height: 30px;
}

button#reset {
  margin-top: 20px;
  padding: 12px 25px;
  font-size: 1em;
  cursor: pointer;
  background-color: #536dfe;
  color: #fff;
  border: none;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
  transition: all 0.3s ease;
}

button#reset:hover {
  background-color: #3949ab;
  transform: scale(1.05);
}

#confetti {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 100;
}