body {
    margin: 0;
    font-family: 'EtArtilux', sans-serif;    
    background: linear-gradient(to bottom right, #0f2027, #203a43, #2c5364);
    color: white;
    display: flex;
    background-image: url('../images/home2.jpg');
    background-size: cover;           
    background-position: center;     
    background-repeat: no-repeat; 
    justify-content: center;
    align-items: center;
    height: 100vh;
  }

  @font-face {
    font-family: 'EtArtilux';
    src: url('../font/EtArtiluxRegular-ARRvD.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
  }  

  .container {
    text-align: center;
    background: rgba(0, 0, 0, 0.6); 
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.7);
    backdrop-filter: blur(8px);
    font-family: 'EtArtilux', sans-serif; 
    padding: 40px;
    border-radius: 16px;
    max-width: 400px;
    width: 90%;
  }

  h1 {
    font-size: 3rem;
    font-family: 'EtArtilux', sans-serif; 
    margin-bottom: 20px;
    color: #00ffff;
  }

  input[type="number"] {
    padding: 12px;
    margin: 10px 0;
    font-family: 'EtArtilux', sans-serif; 
    border: none;
    border-radius: 8px;
    width: 100%;
    font-size: 1rem;
  }

  .button {
    background-color: cyan;
    color: black;
    border: none;
    padding: 12px 20px;
    margin: 10px 0;
    font-family: 'EtArtilux', sans-serif;
    font-weight: bold;
    font-size: 2rem;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 0 10px cyan;
  }

  .button:hover {
    background-color: #00ffff;
    box-shadow: 0 0 20px #00ffff, 0 0 40px #00ffff;
  }

 .button:active {
    transform: scale(0.96);
    box-shadow: 0 0 5px cyan, inset 0 0 10px #00ffff;
  }

  #instructions-btn {
    position: absolute;
    top: 20px;
    left: 20px;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
  }
  
  #instructions-btn img {
    width: 40px;
    height: 40px;
    display: block;
  }  
  
  #instructions-btn img:hover {
    transform: scale(1.1);
  }  

  .leaderboard-popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    backdrop-filter: blur(8px);
    background-color: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    font-family: 'EtArtilux', sans-serif;
  }
  
  .leaderboard-content {
    background: rgba(0, 0, 0, 0.6);
    border: 2px solid #00ffff;
    color: #ffffff;
    padding: 30px;
    border-radius: 20px;
    width: 90%;
    max-width: 450px;
    text-align: center;
    box-shadow: 0 0 20px #00ffffaa;
  }
  
  .leaderboard-content h2 {
    font-size: 28px;
    color: #00ffff;
    margin-bottom: 20px;
  }
  
  #leaderboardList {
    list-style-type: none;
    padding: 0;
    max-height: 300px;
    overflow-y: auto;
  }
  
  #leaderboardList li {
    background-color: rgba(0, 255, 255, 0.1);
    border: 1px solid #00ffff55;
    border-radius: 12px;
    padding: 10px 15px;
    margin: 10px 0;
    font-size: 16px;
    transition: background 0.2s;
  }
  
  #leaderboardList li:hover {
    background-color: rgba(0, 255, 255, 0.2);
  }
  
  .close-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 24px;
    background: transparent;
    color: #00ffff;
    border: none;
    cursor: pointer;
    font-family: 'EtArtilux', sans-serif;
  } 

  .instructions-popup {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    backdrop-filter: blur(6px);
    background-color: rgba(0, 0, 0, 0.6);
    justify-content: center;
    align-items: center;
    z-index: 999;
    font-family: 'EtArtilux', sans-serif;
  }
  
  .instructions-content {
    background: rgba(0, 0, 0, 0.8);
    border: 2px solid #00ffff;
    color: white;
    padding: 30px;
    border-radius: 15px;
    max-width: 500px;
    width: 90%;
    box-shadow: 0 0 20px #00ffffaa;
    position: relative;
    text-align: left;
  }
  
  .instructions-content h2 {
    color: #00ffff;
    font-size: 2.5 rem;
    margin-bottom: 15px;
  }
  
  .instructions-content p {
    font-size: 5 rem;
    line-height: 1.5;
  }
  
  #instructions-btn:hover img {
    filter: brightness(1.2);
    transform: scale(1.05);
    transition: transform 0.2s ease, filter 0.2s ease;
  }
  
  #instructions-btn:active img {
    transform: scale(0.95);
    filter: brightness(0.9);
  }

  .close-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 24px;
    background: none;
    border: none;
    color: #00ffff;
    cursor: pointer;
  }
  

  @media (max-width: 500px) {
    h1 {
      font-size: 2rem;
    }

    input, button {
      font-size: 0.9rem;
      padding: 10px;
    }

    .container {
      padding: 30px 20px;
    }
  }