* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

main {
  background: #000000;
  color: #fff;
  font-family: sans-serif;
  height: 100%;
  left: 0;
  padding: 10px;
  position: fixed;
  text-align: center;
  top: 0;
  width: 100%;
  overflow: hidden;
}

section {
  margin: auto;
  width: 170px;
}

.btn {
  background: #a52df4;
  border: none;
  border-radius: 5px;
  color: white;
  padding: 10px;
  width: 80px;
  margin-top: 30px;
}

.btn-yes {
  display: block;
  position: fixed;
}

.btn-no {
  position: absolute;
}

/* Coração pulsante */
.loading-heart {
  display: block;
  position: relative;
  width: 60px;
  height: 60px;
  margin: auto auto 30px auto;
  transform: rotate(45deg);
  transform-origin: 40px 40px;
  
}

.loading-heart span {
  top: 32px;
  left: 32px;
  position: absolute;
  width: 32px;
  height: 32px;
  background: #a52df4;
  animation: loading-heart 1.2s infinite cubic-bezier(0.215, 0.61, 0.355, 1);
}

.loading-heart span:after,
.loading-heart span:before {
  content: ' ';
  position: absolute;
  display: block;
  width: 32px;
  height: 32px;
  background: #a52df4;
}

.loading-heart span:before {
  left: -24px;
  border-radius: 50% 0 0 50%;
}

.loading-heart span:after {
  top: -24px;
  border-radius: 50% 50% 0 0;
}

@keyframes loading-heart {
  0% {
    transform: scale(0.95);
  }
  5% {
    transform: scale(1.1);
  }
  39% {
    transform: scale(0.85);
  }
  45% {
    transform: scale(1);
  }
  60% {
    transform: scale(0.95);
  }
  100% {
    transform: scale(0.9);
  }
}

.hidden {
  opacity: 0;
  transition: opacity 0.5s ease-out;
}

.visible {
  opacity: 1;
  transition: opacity 0.5s ease-in;
}

@media (max-width: 480px) {
  main {
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100vh;
    overflow: hidden;
  }

  section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
  }

  .btn {
    width: 120px;
    padding: 12px;
    font-size: 16px;
    margin-top: 0;
  }

  .loading-heart {
    margin-bottom: 50px;
  }

  h1 {
    text-align: center;
    margin-bottom: 20px;
  }

  .btn-yes,
  .btn-no {
    position: static;
  }
}