@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@700&display=swap');
html {
  height: 100%;
}
body {
  margin: 0;
  padding: 0;
  font-family: sans-serif;
  background: #10121f;
  background-image: url('images/background.png');
  background-size: 100% 100%; /* Estica na largura sem distorcer a altura */
  background-position: center center;
  background-repeat: no-repeat;
  width: 100vw;
  height: 100vh;
}

   .login-box {
      position: absolute;
      top: 50%;
      left: 50%;
      width: 400px;
      padding: 40px;
      transform: translate(-50%, -50%);
      background: rgba(0, 0, 0, .5);
      box-sizing: border-box;
      box-shadow: 0 15px 25px rgba(0, 0, 0, .6);
      border-radius: 10px;
    }

    .login-box h2 {
      margin: 0 0 30px;
      padding: 0;
      color: #fff;
      text-align: center;
    }

    .login-box .user-box {
      position: relative;
    }

    .login-box .user-box input {
      width: 100%;
      padding: 10px 0;
      font-size: 16px;
      color: #fff;
      margin-bottom: 30px;
      border: none;
      border-bottom: 1px solid #fff;
      outline: none;
      background: transparent;
    }

    .login-box .user-box label {
      position: absolute;
      top: 0;
      left: 0;
      padding: 10px 0;
      font-size: 16px;
      color: #fff;
      pointer-events: none;
      transition: .5s;
    }

    .login-box .user-box input:focus ~ label,
    .login-box .user-box input:valid ~ label {
      top: -20px;
      left: 0;
      color: #03e9f4;
      font-size: 12px;
    }

    .login-box form button {
      position: relative;
      display: inline-block;
      padding: 10px 20px;
      color: #03e9f4;
      font-size: 16px;
      text-decoration: none;
      text-transform: uppercase;
      overflow: hidden;
      transition: .5s;
      margin-top: 40px;
      letter-spacing: 4px;
      background: transparent;
      border: 2px solid #03e9f4;
      border-radius: 5px;
      cursor: pointer;
    }

   .login-box form button:hover {
  background: #4e3efc;
  color: #fff;
  border-radius: 5px;
  box-shadow: 0 0 2px #4e3efc, 0 0 10px #4e3efc, 0 0 20px #4e3efc, 0 0 40px #4e3efc;
}


    .login-box form button span {
      position: absolute;
      display: block;
    }

    .login-box form button span:nth-child(1) {
      top: 0;
      left: -100%;
      width: 100%;
      height: 2px;
      background: linear-gradient(90deg, transparent, #03e9f4);
      animation: btn-anim1 1s linear infinite;
    }

    @keyframes btn-anim1 {
      0% {
        left: -100%;
      }
      50%, 100% {
        left: 100%;
      }
    }

    .login-box form button span:nth-child(2) {
      top: -100%;
      right: 0;
      width: 2px;
      height: 100%;
      background: linear-gradient(180deg, transparent, #03e9f4);
      animation: btn-anim2 1s linear infinite;
      animation-delay: .25s
    }

    @keyframes btn-anim2 {
      0% {
        top: -100%;
      }
      50%, 100% {
        top: 100%;
      }
    }

    .login-box form button span:nth-child(3) {
      bottom: 0;
      right: -100%;
      width: 100%;
      height: 2px;
      background: linear-gradient(270deg, transparent, #03e9f4);
      animation: btn-anim3 1s linear infinite;
      animation-delay: .5s
    }

    @keyframes btn-anim3 {
      0% {
        right: -100%;
      }
      50%, 100% {
        right: 100%;
      }
    }

    .login-box form button span:nth-child(4) {
      bottom: -100%;
      left: 0;
      width: 2px;
      height: 100%;
      background: linear-gradient(360deg, transparent, #03e9f4);
      animation: btn-anim4 1s linear infinite;
      animation-delay: .75s
    }

    @keyframes btn-anim4 {
      0% {
        bottom: -100%;
      }
      50%, 100% {
        bottom: 100%;
      }
    }
    .login-box form button {
  display: block;
  margin: 0 auto;
}

footer {
  bottom: 0;
        position: fixed;
        width: 90%;
        color: #666666;
}