@import url('https://v1.fontapi.ir/css/Vazir');

body {
    width: 100vw;
    height: 100vh;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: Vazir, sans-serif;
    overflow-x: hidden;
  }
  
  canvas {
    position: absolute;
  }
  
  .ctn {
    position: relative;
    width: 360px;
    height: 640px;
  }
  
  #scoreboard {
    position: absolute;
    top: 540px;
    width: 360px;
    text-align: center;
    font-size: 50px;
    color: #333333;
  }
  
  #start-screen {
    position: absolute;
    top: 20px;
  }
  
  #gameover-screen {
    visibility: hidden;
    position: absolute;
    width: 360px;
    height: 640px;
    opacity: 0;
    transition: opacity 1s;
    text-align: center;
  }
  
  #gameover {
    width: 280px;
    background-color: #333333;
    color: #ffffff;
    padding: 10px 20px;
    font-size: 40px;
    margin: auto;
    margin-top: 200px;
  }
  
  #replay {
    width: 100px;
    background-color: #333333;
    color: #ffffff;
    padding: 10px 20px;
    font-size: 20px;
    transition: background-color 1s;
    margin: 100px auto;
  }
  
  #replay:hover {
    background-color: #ffffff;
    color: #333333;
    cursor: pointer;
  }
  
  #ctrl-ctn {
    position: absolute;
    top: 300px;
    left: 80px;
    opacity: 1;
    transition: opacity 1s;
  }
  
  .ctrl-btn {
    background-color: #333333;
    color: #ffffff;
    text-align: center;
    font-size: 18px;
    padding: 8px 16px;
    margin: 10px;
  }