@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@200..700&display=swap');
body{
  margin: 0;
  background-color: #000;
  color: #fff;
  font-size: 12px;
  box-sizing: border-box;
  font-family: Oswald;
}
/*header*/
header{
  width: 1140px;
  max-width: 80%;
  margin: auto; 
  display: flex;
  align-items: center;
  height: 50px;
  position: relative;
  font-size: 1.3em;
  z-index: 100;
}
a{
  text-decoration: none;
  background-image: linear-gradient(
    80deg, #D4A019, #C2A14D, #E1B563
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
header a{
  margin-right: 40px;
  transition: 0.5s ease;
}
header a:hover{
  font-size: 1.5em;
}
/*carousel*/
.carousel{
  width: 100vw;
  height: 100vh;
  margin-top: -50px;
  overflow: hidden;
  position: relative;
}
.carousel .list .item{
  position: absolute;
  inset: 0 0 0 0;
}
.carousel .list .item img{
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.carousel .list .item .content{
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 1140px;
  max-width: 80%;
  padding-right: 30%;
  box-sizing: border-box;
  color: #fff;
  text-shadow: 0 5px 10px #0004;
}
.carousel .list .item .content .author{
  font-size: 1.5em;
  letter-spacing: 10px;
}
.carousel .list .item .content .title,
.carousel .list .item .content .topic{
  font-size: 5em;
  font-weight: bold;
  line-height: 1.2em;;
}
.carousel .list .item .content .topic{
  color: #D4A019;
}
.carousel .list .item .content .description{
  font-size: 1.3em;
  width: 1140px;
  max-width: 80%;
}
.carousel .list .item .content .buttons{
  display: grid;
  grid-template-columns: repeat(2, 130px);
  grid-template-rows: 40px;
  gap: 10px;
  margin-top: 20px;
}
.carousel .list .item .content .buttons button{
  border: none;
  font-family: monospace;
  letter-spacing: 3px;
  font-weight: 700;
  cursor: pointer;
  transition: 0.5s ease;
  border-radius: 10px;
}
.carousel .list .item .content .buttons button:nth-child(2){
  color: #fff;
  background-color: transparent;
  border: 1px solid #fff;
}
.carousel .list .item .content .buttons button:hover{
  opacity: 0.9;
}
.carousel .list .item .content .buttons button:nth-child(2):hover{
  background-color: #D4A019;
  border: none;
}
.carousel .list .item .content .buttons button:active{
  opacity: 0.6;
}
/*start thumbanil*/
.thumbnail{
  position: absolute;
  bottom: 50px;
  left: 50%;
  width: max-content;
  z-index: 100;
  display: flex;
  gap: 20px;
}
.thumbnail .item{
  width: 150px;
  height: 220px;
  flex-shrink: 0;
  position: relative
}
.thumbnail .item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 20px;
}
.thumbnail .item .content{
  position: absolute;
  bottom: 20px;
  left: 10px;
  right: 10px;
}
.thumbnail .item .content .title{
  font-weight: bold;
  font-size: 1.3em;
  color: #D4A019;
}
/*arrows*/
.arrows{
  position: absolute;
  top: 80%;
  right: 52%;
  width: 300px;
  max-width: 30%;
  display: flex;
  gap: 10px;
  align-items: center;
}
.arrows button{
  border: none;
  font-size: large;
  font-family: monospace;
  font-weight: bold;
  background-color: #eee4;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  color: #fff;
  transition: 0.5s ease;
  z-index: 100;
}
.arrows button:hover{
  background-color: #fff;
  color: gray;
  cursor: pointer;
}
@media screen and (max-width: 678px) {
  .carousel .list .item .content{
    padding-right: 0;
  }
  .carousel .list .item .content .title{
    font-size: 30px;
  }
  .carousel .list .item .content button:nth-child(2){
    grid-row-start: 3;
    height: 40px;
  }
  .thumbnail{
    left: 0;
    transform: translateY(-50px);
  }
}

.carousel.next .list .item:nth-child(1){
  z-index: 2;  
}
.carousel.next .list .item:nth-child(1) .author,
.carousel.next .list .item:nth-child(1) .title,
.carousel.next .list .item:nth-child(1) .topic,
.carousel.next .list .item:nth-child(1) .description,
.carousel.next .list .item:nth-child(1) .buttons{
  transform: translateY(50px);
  filter: blur(20px);
  opacity: 0;
  animation: showContent 0.5s 1s linear 1 forwards;
}
@keyframes showContent {
  to{
    transform: translateY(0);
    filter: blur(0);
    opacity: 1;
  }
}
.carousel.next .list .item:nth-child(1) .title{
  animation-delay: 1.2s;
}
.carousel.next .list .item:nth-child(1) .topic{
  animation-delay: 1.4s;
}
.carousel.next .list .item:nth-child(1) .description{
  animation-delay: 1.6s;
}
.carousel.next .list .item:nth-child(1) .buttons{
  animation-delay: 1.8s;
}
/*effects next click*/
.carousel.next .list .item:nth-child(1) img{
  width: 150px;
  height: 220px;
  position: absolute;
  bottom: 50px;
  left: 50%;
  border-radius: 20px;
  animation: showImage 0.5s linear 1 forwards;
}
@keyframes showImage {
  to{
    width: 100%;
    height: 100%;
    border-radius: 0;
    left: 0;
    bottom: 0;
  }
}
.carousel.next .thumbnail .item:nth-last-child(1){
  width: 0;
  overflow: hidden;
  animation: showThumbnail 0.5s linear 1 forwards;
}
@keyframes showThumbnail {
  to{
    width: 150px;
  }
}
.carousel.next .thumbnail{
  transform: translateX(150px);
  animation: transformThumbnail 0.5s linear 1 forwards;
}
@keyframes transformThumbnail {
  to{
    transform: translateX(0);
  }
}
/*effects previous click*/
.carousel.previous .list .item:nth-child(2){
  z-index: 2;
}
.carousel.previous .list .item:nth-child(2) img{
  bottom: 0;
  left: 0; 
  position: absolute;
  animation: outImage 0.5s linear 1 forwards;
}
@keyframes outImage {
  to{
    width: 150px;
    height: 220px;
    bottom: 50px;
    left: 50%;
    border-radius: 20px;
  }
}
.carousel.previous .thumbnail .item:nth-child(1){
  width: 0;
  overflow: hidden;
  animation: showThumbnail 0.5s linear 1 forwards;
}
.carousel.previous .list .item:nth-child(2) .author,
.carousel.previous .list .item:nth-child(2) .title, 
.carousel.previous .list .item:nth-child(2) .topic,
.carousel.previous .list .item:nth-child(2) .description,
.carousel.previous .list .item:nth-child(2) .buttons{
  animation: contentOut 0.5s linear 1 forwards;
}
@keyframes contentOut {
  to{
    transform: translateY(-150px);
    filter: blur(20px);
    opacity: 0;
  }
}
.carousel.next .arrows button,
.carousel.previous .arrows button{
  pointer-events: none;
}
/*time*/
.time{
  width: 0;
  height: 3px;
  position: absolute;
  background-color: #f1683a;
  top: 0;
  left: 0;
}
.carousel.next .time,
.carousel.previous .time{
  width: 100%;
  animation: timeRunning 2s linear 1 forwards;
}
@keyframes timeRunning {
  to{
    width: 0;
  }
}