* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: "Roboto", sans-serif;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background: linear-gradient(135deg, #ac08d4, #000000);
  color: #fff;
}

.container {
  text-align: center;
  padding: 20px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  box-shadow: 0 8px 32px 0 rgba(255, 0, 0, 0.37);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

h1 {
  margin-bottom: 20px;
  font-size: 36px;
}

.options,
.difficulty-options {
  margin-bottom: 20px;
}

.option-button,
.difficulty-button {
  margin: 0 10px;
  padding: 10px 20px;
  font-size: 16px;
  border: none;
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  cursor: pointer;
  transition: background 0.3s;
}

.option-button:hover,
.difficulty-button:hover {
  background: rgba(255, 255, 255, 0.3);
}

.option-button.active,
.difficulty-button.active {
  background: rgba(255, 255, 255, 0.5);
}

.name-inputs {
  display: none;
  margin-bottom: 20px;
}

.name-inputs div {
  display: none;
  margin-bottom: 10px;
}

.name-inputs input {
  margin: 0 10px;
  padding: 10px;
  font-size: 16px;
  border: none;
  border-radius: 5px;
}

.name-inputs button {
  padding: 10px 20px;
  font-size: 16px;
  border: none;
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  cursor: pointer;
  transition: background 0.3s;
}

.name-inputs button:hover {
  background: rgba(255, 255, 255, 0.3);
}

.board {
  display: grid;
  grid-template-columns: repeat(3, 100px);
  grid-gap: 10px;
  margin: 0 auto;
}

.cell {
  width: 100px;
  height: 100px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 32px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.3s;
}

.cell:hover {
  background: rgba(255, 255, 255, 0.3);
}

.status {
  margin-top: 20px;
  font-size: 18px;
}

#reset {
  margin-top: 20px;
  padding: 10px 20px;
  font-size: 16px;
  border: none;
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  cursor: pointer;
  transition: background 0.3s;
}

#reset:hover {
  background: rgba(255, 255, 255, 0.3);
}