body {
  font-family: Arial, sans-serif;
  background: #f0f0f0;
  margin: 0;
  padding: 0;
  color: #333;
}
#game-container {
  max-width: 500px;
  margin: 0 auto;
  text-align: center;
  padding: 20px;
}
.letter-box {
  width: 50px;
  height: 50px;
  border: 2px solid #ccc;
  margin: 2px;
  font-size: 28px;
  font-weight: bold;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: white;
}
.row {
  display: flex;
  justify-content: center;
}
.green { background-color: #6aaa64; color: white; }
.yellow { background-color: #c9b458; color: white; }
.gray { background-color: #787c7e; color: white; }
#keyboard button {
  margin: 3px;
  padding: 10px;
  font-size: 16px;
  font-weight: bold;
  background: #c9b458;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}
.popup {
  position: fixed;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #fff;
  padding: 25px;
  box-shadow: 0 0 10px rgba(0,0,0,0.3);
}
.hidden { display: none; }