styles.css

body {
  margin: 0;
  font-family: Arial, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100vh;
  background: linear-gradient(135deg, #ff9a9e, #fad0c4, #fbc2eb);
  background-size: 200% 200%;
  animation: gradientAnimation 10s ease infinite;
}

@keyframes gradientAnimation {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

header {
  text-align: center;
  margin: 20px 0;
}

h1 {
  font-size: 2.5em;
  margin: 0;
  color: #fff;
}

.signature {
  font-size: 1em;
  margin-top: 5px;
  color: #fff;
}

.signature span {
  font-weight: bold;
  color: #ff0066;
}

.container {
  max-width: 400px;
  width: 90%;
}

.board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  background-color: #333;
  padding: 10px;
  border-radius: 8px;
}

.cell {
  background-color: #fff;
  width: 100px;
  height: 100px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 2em;
  font-weight: bold;
  cursor: pointer;
  border-radius: 4px;
}

.cell[data-cell]:hover {
  background-color: #f3f3f3;
}

.restart-btn {
  margin-top: 20px;
  background-color: #007BFF;
  color: white;
  border: none;
  padding: 10px 20px;
  font-size: 1em;
  cursor: pointer;
  border-radius: 5px;
}

.restart-btn:hover {
  background-color: #0056b3;
}

.result-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  color: #fff;
  display: none;
}

.result-screen p {
  font-size: 2em;
  margin-bottom: 20px;
}

button {
  background-color: #007BFF;
  color: white;
  border: none;
  padding: 10px 20px;
  font-size: 1em;
  cursor: pointer;
  border-radius: 5px;
}

button:hover {
  background-color: #0056b3;
}