@font-face {
    font-family: 'superscript';
    src:url('../font/superscript.ttf.woff') format('woff'),
        url('../font/superscript.ttf.svg#superscript') format('svg'),
        url('../font/superscript.ttf.eot'),
        url('../font/superscript.ttf.eot?#iefix') format('embedded-opentype');
    font-weight: normal;
    font-style: normal;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  width: 100%;
  background: black;
  display: flex;
  align-items: center;
  justify-content: center;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  image-rendering: -moz-crisp-edges;
  image-rendering: -webkit-crisp-edges;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.game {
  width: 100%;
  height: 100%;
  position: relative;
}

.counter {
  font-family: 'superscript', Arial, sans-serif;
  font-size: 22px;
  color: black;
 margin-top: -800px;
  margin-right: 1500px;

  bottom: 0;
  right: 20px;
  text-align: center;
  z-index: 2;
}

.mobileControls {
  position: absolute;
  bottom: 25px;
  left: 0;
  right: 0;
  margin: 0 auto;
  display: none;
  align-items: center;
  justify-content: space-around;
  z-index: 3;
}

.mobileControls__button {
  font-family: 'superscript', Arial, sans-serif;
  width: 60px;
  height: 60px;
  background: #ff4623;
  border: none;
  border-radius: 50%;
  display: flex;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

@media screen and (max-width: 900px) {
  .mobileControls {
    display: flex;
  }

  .counter {
    display: none;
  }
}
/* Cài đặt cho điều khiển nhạc */
.music-control {
    position: absolute;
    top: 10px;
    right: 10px;
}

#musicToggle {
    background: none;
    margin-right: 1550px;
    margin-top: 50px;
    border: none;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
    transition: color 0.3s ease;
}

#musicToggle:hover {
    color: #ddd;
}