body {
  margin: 0;
  overflow: hidden;
  background: #111;
  color: white;
  font-family: Arial, sans-serif;
  cursor: crosshair;
}

#menu {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

#gameButton {
  background-color: white;
  border: none;
  color: black;
  padding: 10px 15px;
  margin: 7px;
  font-size: 13px;
  cursor: pointer;
  border-radius: 5px;
}

#btn {
  background-color: white;
  border: none;
  color: black;
  padding: 15px 30px;
  margin: 10px;
  font-size: 18px;
  cursor: pointer;
  border-radius: 5px;
}

#gameButton:hover, #btn:hover {
  background-color: #2ecc71;
}
#gameButton:active, #btn:active {
  background-color: #27ae60;
}

#historicoStats {
  width: 320px;
  margin: 20px auto;
  text-align: left;
}

.stat-card {
  background: rgba(255,255,255,0.08);
  padding: 12px;
  margin-bottom: 10px;
  border-radius: 10px;
  text-align: center;
}

#ui {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 1000;
}

.alvo {
  position: absolute;
  width: 70px;
  height: 70px;
  border-radius: 50%;
  cursor: crosshair;
}

#countdown {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 80px;
  font-weight: bold;
  color: white;
  z-index: 9999;
}