body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  text-align: center;
  background: radial-gradient(circle at top, #0f2027, #203a43, #2c5364);
  color: #f5f5f5;
  margin: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
}

#title {
  font-size: 32px;
  font-style: italic;
  font-weight: bold;
  background-color: rgba(0, 0, 0, 0.6);
  margin: 0;
  padding: 20px;
  letter-spacing: 3px;
  text-transform: uppercase;
  text-shadow: 0 0 15px #00f7ff, 0 0 30px #ff4ecd;
}

#gameBoard {
  display: grid;
  grid-template-columns: repeat(3, 100px);
  grid-template-rows: repeat(3, 100px);
  gap: 12px;
  margin: 20px auto;
  width: max-content;
}

.cell {
  background-color: #1c1c1c;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  cursor: pointer;
  border: 2px solid #444;
  border-radius: 12px;
  transition: transform 0.2s ease, box-shadow 0.3s ease, background 0.3s ease;
}

.cell:hover {
  transform: scale(1.1);

}

#controls {
  margin-top: 20px;
}

#controls input {
  padding: 12px 18px;
  margin: 5px;
  font-size: 18px;
  border-radius: 8px;
  border: none;
  outline: none;
  background: #2c2c2c;
  color: #fff;
  text-align: center;
  transition: box-shadow 0.2s ease;
}

#controls input:focus {
  box-shadow: 0 0 12px #76b610;
}

#controls button {
  padding: 12px 30px;
  margin: 5px;
  background-color: rgba(0, 255, 0, 0.377);
  border: none;
  border-radius: 10px;
  cursor: pointer;
  font-weight: bold;
  color: #ffffff;
  font-size: 16px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

#controls button:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 0 15px #000200;
}

#message {
  margin-top: 40px;
  padding: 25px;
  min-height: 40px;
  background: rgba(0, 0, 0, 0.7);
  color: #0f0;
  font-family: monospace;
  font-size: 1.2rem;
  text-align: center;
  border-radius: 10px;
 
}