/*====RESET====*/
  
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  /*=====Estilização=====*/
  
  html {
    scroll-behavior: smooth;
  }
  
  body {
    background-color: transparent;
  }
  
  body.dark {
    background-color: #121212;
  }
  
  main {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    gap: 20px;
  }
  
  .bar {
    display: flex;
    margin: 1rem 0rem;
    gap: 10px;
    opacity: 0;
    animation: showup 1.2s ease forwards;
  }
  
  .bar #display {
    width: 90%;
    border: none;
    font-size: 22px;
    color: black;
    border-bottom: 2px solid #777;
    padding: 10px 0px;
    background-color: transparent;
  }
  
  .bar #display.dark {
    color: white;
  }
  
  .bar #delete {
    font-size: 32px;
    background-color: transparent;
    border: none;
    transition: transform 0.2s opacity 0.2s color 0.2s;
  }
  
  .bar #delete:hover {
    transform: translateY(-4px);
  }
  
  .bar #delete:active {
    opacity: 0.5;
    color: #777;
  }
  
  .bar #delete.dark {
    color: white;
  }
  
  .calculator {
    display: flex;
    gap: 8px;
  }
  
  .numbers {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }
  
  .numbers button {
    width: 80px;
    height: 80px;
    font-size: 32px;
    border: 1px solid transparent;
    border-radius: 50%;
    transition: opacity 0.2s transform 0.2s;
    opacity: 0;
    animation: showup 1.4s ease forwards;
    animation-delay: 0.2s;
  }
  
  .numbers button:hover, .operadores button:hover {
    transform: scale(1.08);
  }
  
  .numbers button:active,  .operadores button:active {
    opacity: 0.2;
  }
  
  .numbers #AC {
    color: red;
    font-weight: bold;
  }
  
  .numbers #equal {
    color: #09ff2d;
    font-weight: bold;
  }
  
  .numbers button.dark {
    color: white;
    background-color: #333;
  }
  
  .operadores {
    display: grid;
    grid-template-columns: repeat(1, 1fr); 
    gap: 8px;
  }
  
  .operadores button {
    width: 80px;
    height: 80px;
    font-size: 32px;
    border: 1px solid transparent;
    border-radius: 50%;
    font-weight: bold;
    color: #04adf4;
    opacity: 0;
    animation: showup 1.6s ease forwards;
    animation-delay: 0.4s;
  }
  
  .operadores button.dark {
    background-color: #333;
  }
  
  .footer{
    margin-top:50px;
    padding:20px;
    text-align:center;
    border-top:1px solid rgba(0,0,0,0.7);
    font-size:14px;
    animation: showup 1.2s ease forwards;
  }
  
  .footer.dark {
    border-top:1px solid rgba(255,255,255,0.1);
    color: white;
  }

  .footer-links{
    margin:10px 0;
    display:flex;
    justify-content:center;
    gap:15px;
    flex-wrap: wrap;
  }
  
  #change {
    padding: 5px;
    margin: 10px;
    font-size: 14px;
    border: 1px solid transparent;
    border-radius: 20px;
    background-color: #989898;
  }

  .autor{
    opacity:0.6;
    font-size:12px;
  }
  
  @keyframes showup {
      from {
        transform: translateY(-40px);
        opacity: 0;
      }
      to {
        transform: translateY(0px);
        opacity: 1;
      }
    }
  
  @media (min-width: 768px) {
    
    .bar {
      margin: 1.6rem 0rem;
    }
    
    .bar #display {
      width: 690px;
    }
    
    .numbers {
      gap: 15px;
    }
    
    .operadores {
      gap: 15px;
    }
    
    .numbers button {
      width: 180px;
      height: 180px;
      font-size: 48px;
      border: 1px solid transparent;
      border-radius: 50%;
    }
    
    .operadores button {
      width: 180px;
      height: 180px;
      font-size: 48px;
      border: 1px solid transparent;
      border-radius: 50%;
    }
  }