.screen--credits {
  background: #000;
  overflow: hidden;
}

.credits__viewport {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.credits__scroll {
  position: absolute;
  top: 100%;
  left: 50%;
  width: min(80vw, 640px);
  transform: translate(-50%, 0);
  text-align: center;
}

.credits__scroll.credits__scroll--playing {
  animation: credits-scroll 30s linear forwards;
}

@keyframes credits-scroll {
  from {
    transform: translate(-50%, 0);
  }
  to {
    transform: translate(-50%, -260vh);
  }
}

.credits__scroll p {
  margin: 0 0 2.4em;
  font-family: 'Georgia', 'Times New Roman', serif;
  font-size: 1.2rem;
  line-height: 1.7;
  color: #cfcfcf;
  text-shadow: 0 0 10px rgba(139, 0, 0, 0.5);
}

.credits__final {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  text-align: center;
  font-family: 'Georgia', 'Times New Roman', serif;
  font-size: 1.6rem;
  letter-spacing: 1px;
  color: #d6d6d6;
  text-shadow: 0 0 12px rgba(200, 0, 0, 0.8);
  opacity: 0;
  transition: opacity 1.5s ease;
}

.credits__final:not(.hidden) {
  opacity: 1;
}