/* 
  body{
    font-family: 'Helvetica', sans-serif;
  }
   */

@font-face {
      font-family: 'A4SPEED';
      src: url('https://cdn.shopify.com/s/files/1/0665/5934/4879/files/A4SPEED-Bold.ttf?v=1738703586') format('truetype');
      font-weight: bold;
      font-style: normal;
    }
    .texto-personalizado {
      font-family: 'A4SPEED', 
      sans-serif;
    }
    html, body {
      height: 100%;
      margin: 0;
      padding: 0;
    }

    body {
      background: #0f0f0f;
      color: white;
      font-family: 'Orbitron', sans-serif;
      overflow: hidden;

      background-size: cover;
      background-position: center;
    }

    .container-center {
      display: flex;
      justify-content: center;
      align-items: center;

      padding: 1rem;
      padding-top: 85px;
      box-sizing: border-box;
    }

    .certificate {
      background: rgba(0, 0, 0, 0.8);
      padding: 2rem;
      border: 1px solid #ffffff;
      border-radius: 15px;
      max-width: 400px;
      text-align: center;
      width: 100%;
      box-shadow: 0 .5rem 1rem rgba(218, 217, 217, 0.47);
    }

    .logo {
      width: 100px;
      margin-bottom: 1rem;
    }

    h1 {
      color: #ffe600;
      margin-bottom: 0.5rem;
    }

    .serial {
      font-size: 0.9rem;
      color: #aaa;
      margin-bottom: 1.5rem;
    }

    .text {
      font-size: 0.95rem;
      line-height: 1.4;
    }

    .footer {
      margin-top: 2rem;
      font-size: 0.8rem;
      color: #666;
    }

    .btn-shine {
      font-weight: 600;
      color: #ffffff;
      text-decoration: none;
      white-space: nowrap;
      background: linear-gradient(to right, #4d4d4d 0%, white 10%,rgb(116, 112, 112) 20%);
      background-size: 200% auto;
      background-position: 0;
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      animation: shine 3s infinite linear;
    }

    @keyframes shine {
      0% {
        background-position: 0;
      }
      60% {
        background-position: 200%;
      }
      100% {
        background-position: 200%;
      }
    }