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

:root {
  --index: calc(1vw + 1vh);
}

@font-face {
  font-family: TrajanPro;
  src: url("fonts/trajanpro_bold.otf");
}

body {
  font-family: "TrajanPro";
  color: white;
  overflow-x: hidden;
}

.scene {
  height: 600vh;
}

.layer {
  height: 100vh;
  width: 100%;
  background-position: center;
  background-size: cover;
  position: fixed;
  display: flex;
  align-items: center;
  justify-content: center;
  animation-timeline: scroll();
  animation-timing-function: linear;
  animation-fill-mode: both;
  animation-range: 0 500vh;
}

.layer:nth-child(1) {
  animation-name: animation-1;
}
@keyframes animation-1 {
  to {
    scale: 1.25;
  }
}

.layer:nth-child(2) {
  animation-name: animation-2;
}
@keyframes animation-2 {
  to {
    scale: 1.4;
  }
}

.layer:nth-child(3) {
  animation-name: animation-3;
}
@keyframes animation-3 {
  to {
    scale: 1.75;
  }
}

.layer:nth-child(4) {
  animation-name: animation-4;
}
@keyframes animation-4 {
  to {
    scale: 1.9;
  }
}

.layer:nth-child(5) {
  animation-name: animation-5;
}
@keyframes animation-5 {
  to {
    scale: 2;
  }
}

.layer:nth-child(6) {
  animation-name: animation-6;
}
@keyframes animation-6 {
  to {
    scale: 3;
  }
}

.layer:nth-child(7) {
  opacity: 0;
  animation-range: 450vh 500vh;
  animation-name: animation-7;
}
@keyframes animation-7 {
  to {
    opacity: 1;
  }
}

.layer__content {
  padding: 5vh 5vw;
  background-color: rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(3px);
  overflow: hidden;
  width: 100%;
  height: 100%;
  background-position: center;
  background-repeat: no-repeat;
  background-size: 50vw;

  animation-timeline: scroll();
  animation-timing-function: linear;
  animation-fill-mode: both;
  animation-range: 0 100vh;
  animation-name: animation-head;

  h1 {
    font-size: calc(var(--index) * 3);
    text-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
    text-align: center;
    font-weight: bold;
  }
}

@keyframes animation-head {
  to {
    opacity: 0;
    filter: blur(20px);
  }
}

.layer__end_content {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: calc(var(--index) * 0.5);
}

.layer__end img {
  height: calc(var(--index) * 15);
  text-transform: uppercase;
  position: relative;
}

.layer__end h3 {
  font-size: calc(var(--index) * 2);
  text-transform: uppercase;
  position: relative;
}

.layer__end p {
  font-size: calc(var(--index) * 0.5);
  position: relative;
}

.layer__end a {
  font-size: calc(var(--index) * 0.5);
  position: relative;
  color: white;
}

.layer__end::before {
  content: "";
  background-color: #0c0f17;
  inset: 0;
  position: absolute;
}