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

body {
  height: 100vh;
  display: grid;
  place-items: center;
  overflow: hidden;
  font-family: "Roboto", sans-serif;
}

main {
  position: relative;
  width: 100%;
  height: 100%;
  box-shadow: 0 3px 10px rgba(0,0,0,0.3);
  background: #173a59;
  background: linear-gradient(58deg,rgba(23, 58, 89, 1) 0%, rgba(41, 29, 87, 1) 43%, rgba(72, 53, 117, 1) 71%, rgba(39, 123, 140, 1) 100%);
}

.body_hide {
  opacity: 0;
  transition: .8s opacity ease-in-out;
  background: #000;
}
.body_visible {
  opacity: 1;
}

.hidden,[data-player]{display:none}
.logo,.menu{z-index:9;position:absolute}
.logo{max-width:250px;padding:3rem 5rem}
.menu{right:5rem;top:5rem}
.menu a{color:white;font-size:20px;text-decoration:none;border-bottom:1px solid #fff;margin-left:25px}
#player{background:#001314c4;padding:35px 50px;border-radius:30px}
button{border:none;background-color:#287bd3;color:white;padding:10px 20px;margin:0 14px 30px;transition:all 0.3s ease;cursor:pointer;outline:none;border-radius:8px;width:100px}
button:hover{background-color:#0056b3;border-color:#afcff2}
button:active{transform:scale(0.7)}
b{font-weight:500}
i{font-size:35px;margin-top:2px}
.fa-play:before{margin-left:3px}

.overlay {
	position: absolute;
	top: 0;
	bottom: 0;
z-index:9;
  left: 0;
  right: 0;
  background: rgba(0,0,0,0.5);
	transition: opacity 200ms;
  visibility: hidden;
	opacity: 0;
	&.light {
    background: rgba(255,255,255,0.5);
  }
  .cancel {
    position: absolute;
    width: 100%;
    height: 100%;
    cursor: default;
  }
  &:target {
    visibility: visible;
    opacity: 1;
  }
}

.popup {
	margin: 80px auto;
	padding: 50px 80px 55px;
	background: rgba(0,0,0,0.8);
	border: 1px solid #111;
	max-width: 700px;
	box-shadow: 0 0 50px rgba(0,0,0,0.5);
	position: relative;
	border-radius: 20px;
	max-height: 80%;
	overflow-y: auto;
  .light & {
    border-color: #aaa;
    box-shadow: 0 2px 10px rgba(0,0,0,0.25);
  }
  h2 {
    margin-top: 0;
    color: white;
    font-family: "Inter", sans-serif;
    margin-bottom: 2rem;
  }
  .close {
    position: absolute;
    width: 88px;
    padding: 30px;
    top: 0;
    right: 0;
    opacity: 0.8;
    transition: all 200ms;
    font-size: 30px;
    font-weight: bold;
    text-decoration: none;
    color: #888;
    text-align: center;
    &:hover {
      opacity: 1;
    }
  }
  .about {
    color: #dfe6ee;
    line-height: 25px;
    overflow: auto;
  }
  p {
    margin: 0 0 1em;
    &:last-child {
      margin: 0;
    }
  }
}

.range{display:grid;gap:20px;width:127px;zoom:.8;margin:auto}.range-label{font-size:21px;font-weight:500}.range-input{appearance:none;background:0 0}.range-input::-webkit-slider-runnable-track{box-sizing:border-box;height:8px;background-color:#ababab;border-radius:10px}.range-input::-moz-range-track{box-sizing:border-box;height:8px;background-color:#ababab;border-radius:10px}.range-input::-webkit-slider-thumb{-webkit-appearance:none;width:30px;height:30px;margin-top:-11px;border:none;border-radius:50%;background:#fff;box-shadow:0 0 0 5px inset #287bd3;transition:.3s}.range-input::-moz-range-thumb{width:30px;height:30px;margin-top:0;border:none;border-radius:50%;background:#fff;box-shadow:0 0 0 5px inset #287bd3;transition:.3s}.range-input:focus-visible{outline:0}.range-input:focus-visible::-webkit-slider-runnable-track{outline-offset:15px;outline:#287bd3 solid 1px}.range-input:focus-visible::-moz-range-track{outline-offset:15px;outline:#287bd3 solid 1px}.range-input:focus-visible::-webkit-slider-thumb,.range-input:hover::-webkit-slider-thumb{box-shadow:0 0 0 10px inset #287bd3}.range-input:focus-visible::-moz-range-thumb,.range-input:hover::-moz-range-thumb{box-shadow:0 0 0 10px inset #287bd3}.range-input:active::-webkit-slider-thumb{box-shadow:0 0 0 30px inset #287bd3}.range-input:active::-moz-range-thumb{box-shadow:0 0 0 30px inset #287bd3}.range-input:disabled::-webkit-slider-thumb{box-shadow:0 0 0 30px inset gray}.range-input:disabled::-moz-range-thumb{box-shadow:0 0 0 30px inset gray}.range-input:focus-visible::-webkit-slider-thumb{outline:#41e847 solid 3px}.range-input:focus-visible::-moz-range-thumb{outline:#41e847 solid 3px}

.item {
  width: 200px;
  height: 300px;
  list-style-type: none;
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  z-index: 1;
  background-position: center;
  background-size: cover;
  border-radius: 20px;
  box-shadow: 0 20px 30px rgba(255,255,255,0.3) inset;
  transition: transform 0.1s, right 0.7s, top 0.7s, width 0.7s, height 0.7s, opacity 0.7s;

  &:nth-child(1), &:nth-child(2) {
    right: 0;
    top: 0;
    width: 100%;
    height: 100%;
    transform: none;
    border-radius: 0;
    box-shadow: none;
    opacity: 1;
  }
  &:nth-child(1) { opacity:0; }
  &:nth-child(3) { right: 5rem; opacity: 1; cursor: pointer; transition: box-shadow 0.3s; z-index:5 }
  &:nth-child(3):hover { box-shadow: 0 20px 30px rgba(255, 255, 255,0.5) inset }
  &:nth-child(4) { right: calc(50% + 220px); opacity: 0; }
  &:nth-child(5), &:nth-child(6) { display: none; }
}

.content {
  width: min(30vw,440px);
  position: absolute;
  top: 58%;
  left: 5rem;
  transform: translateY(-50%);
  text-shadow: 0 1px 25px rgba(1,1,1,0.8);
  opacity: 0;
  display: none;
  color: white;
  user-select: none;

  & .title {
    font-size: 2rem;
    text-transform: uppercase;
    font-family: "Inter", sans-serif;
    letter-spacing: 1px;
    margin-bottom: 1em;
  }

  & .description {
    line-height: 1.6;
    margin: .5rem 0;
    font-size: 17px;
  }
}

.item:nth-of-type(2) .content {
  display: block;
  animation: show 0.75s ease-in-out 0.3s forwards;
}

li {margin-left: 1em; line-height: 20px; margin-bottom: 5px;}

@keyframes show {
  0% {
    transform: translateY(calc(-50% + 75px));
  }
  100% {
    opacity: 1;
  }
}

.nav {
  position: absolute;
  bottom: 50%;
  left: 50%;
  transform: translateX(-50%);
  height: 88px;
  z-index: 5;
  user-select: none;
}

@media (width > 900px) {
@keyframes show {
  0% {
    transform: translateY(calc(-50% + 75px));
    filter: blur(5px);
  }
  100% {
    opacity: 1;
    filter: blur(0);
  }
}
}

@media (width >= 650px) and (width <= 900px) {
  .content {
    top: 83%;
    width: min(50vw, 500px);

    & .title        { font-size: 1.25rem; }
    & .description  { font-size: 1rem; }
  }
  .item {
    width: 160px;
    height: 270px;

    &:nth-child(3) { right: 2rem; }
    &:nth-child(4) { right: calc(50% + 170px); opacity: 0; }
  }
}

@media (width < 650px) {
  .item {transition: right 0.7s, top 0.7s, width 0.7s, height 0.7s, opacity 0.7s;
}
  .logo {
    max-width: 170px;
    padding: 3rem 2.5rem; }
  .nav {
    left: 33%; }
  .menu {top: 4rem;  right: 4rem;}
  .menu a {
    display: table;
    margin-bottom: 11px; }
  .content {
    top: 83%;
    left: 2.5rem;
    width: min(80vw, 700px);

    & .title        { font-size: 1.25rem; }
    & .description  { font-size: 0.88rem; }
  }
  .popup {padding:50px}
  .item {
    width: 130px;
    height: 220px;

    &:nth-child(3) { right: 1rem; }
    &:nth-child(4) { right: calc(33% + 120px); opacity: 0; }
  }
}