@import url("https://api.fonts.coollabs.io/css2?family=Red+Hat+Text:wght@700&display=swap") cover;
:root {
  --days: 0;
  --hours: 1;
  --minutes: 1;
  --seconds: 0;
  --grayish-blue: #042e16;
  --desaturated-blue: #008160;
  --dark-blue-800: hsl(235, 16%, 14%);
  --dark-blue-900: hsl(234, 17%, 12%);
  --soft-red: #fff;
  --bg-clr-body: var(--dark-blue-800);
  --bg-clr-card: var(--desaturated-blue);
  --bg-clr-card-shadow: var(--dark-blue-900);
  --txt-clr-card: var(--soft-red);
  --txt-clr-card-title: var(--grayish-blue);
  --txt-size-card: 9.5rem;
}
body {
  background: unset !important;
  background-color: #fff !important;
  font-family: "Red Hat Text", sans-serif;
}
.content-grid {
  display: grid;
  gap: 10px;
  grid-template: repeat(2, 1fr)/repeat(4, 1fr);
}
.flip-card {
  --_flip-card-size: 150px;
  background: linear-gradient(to bottom, #008160 50%, var(--bg-clr-card) 0);
  border-radius: 0.5rem;
  box-shadow: 0 1rem 0 #153121;
  color: var(--txt-clr-card);
  display: inline-flex;
  flex-direction: column;
  font-size: var(--txt-size-card);
  font-weight: 700;
  position: relative;
  perspective: 800px;
  perspective-orgin: center;
  height: var(--_flip-card-size);
  width: var(--_flip-card-size);
}
.flip-card::before, .flip-card::after {
  --_pivot-pt-size: 12px;
  content: "";
  background: white;
  border-radius: 50%;
  height: var(--_pivot-pt-size);
  width: var(--_pivot-pt-size);
  top: 50%;
  position: absolute;
  transform: translateY(-50%);
  z-index: 99;
}
.flip-card::before {
  left: calc(var(--_pivot-pt-size) / -2);
}
.flip-card::after {
  right: calc(var(--_pivot-pt-size) / -2);
}
.flip-card .top::before {
  content: "";
  background: var(--bg-clr-card-shadow);
  inset: 0;
  opacity: 0.2;
  z-index: 99;
}
.flip-card .time {
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  inset: 0;
  z-index: -1;
}
.flip-card .top,
.flip-card .bottom {
  --_flip-speed: 450ms;
  background: var(--bg-clr-card);
  display: flex;
  justify-content: center;
  position: absolute;
  overflow: hidden;
  height: 50%;
  width: 100%;
  transform-style: preserve-3d;
}
.flip-card .top[data-flip=true] {
  animation: top-to-bottom var(--_flip-speed) ease-in;
}
.flip-card .bottom[data-flip=true] {
  animation: bottom-to-top var(--_flip-speed) ease-out var(--_flip-speed);
}
.flip-card .top {
  border-radius: 0.5rem 0.5rem 0 0;
  transform-origin: bottom;
}
.flip-card .bottom {
  border-radius: 0 0 0.5rem 0.5rem;
  top: 50%;
  transform-origin: top;
}
.flip-card .top::after {
  top: 80%;
}
.flip-card .top::after,
.flip-card .top::before,
.flip-card .bottom::after {
  position: absolute;
}
.flip-card .bottom::after {
  top: -20%;
}
.flip-card:nth-child(1) .top::after, .flip-card:nth-child(1) .bottom::after {
  counter-reset: days var(--days);
  content: counter(days, decimal-leading-zero);
}
.flip-card:nth-child(2) .top::after, .flip-card:nth-child(2) .bottom::after {
  counter-reset: hours var(--hours);
  content: counter(hours, decimal-leading-zero);
}
.flip-card:nth-child(3) .top::after, .flip-card:nth-child(3) .bottom::after {
  counter-reset: minutes var(--minutes);
  content: counter(minutes, decimal-leading-zero);
}
.flip-card:nth-child(4) .top::after, .flip-card:nth-child(4) .bottom::after {
  counter-reset: seconds var(--seconds);
  content: counter(seconds, decimal-leading-zero);
}
.card-title {
  color: var(--txt-clr-card-title);
  justify-self: center;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  font-size: 15px;
}
@keyframes top-to-bottom {
  100% {
    transform: rotateX(-90deg);
  }
}
@keyframes bottom-to-top {
  0% {
    transform: rotateX(90deg);
    box-shadow: 0 5px 5px rgba(0, 0, 0, 0.3);
  }
  100% {
    transform: rotateX(0deg);
    box-shadow: 0 5px 5px rgba(0, 0, 0, 0);
  }
}
@media(max-width: 767px){
  .flip-card {
    --_flip-card-size: 120px;
  }
  :root {
    --txt-size-card: 6.5rem;
  }
}
@media(max-width: 567px){
  .flip-card {
    --_flip-card-size: 100px;
  }
  :root {
    --txt-size-card: 4.5rem;
  }
  .content-grid{
    gap: 10px;
  }
}
@media(max-width: 460px){
  .flip-card {
    --_flip-card-size: 90px;
  }
  .card-title{
    font-size: 11px;
  }
  .flip-card .top::after {
    top: 70%;
  }
  .flip-card .bottom::after {
    top: -30%;
  }
  .content-grid{
    gap: 10px;
  }
}
@media(max-width: 400px){
  .flip-card {
    --_flip-card-size: 75px;
  }
  :root {
    --txt-size-card: 3.5rem;
  }
  .flip-card .top::after {
    top: 65%;
  }
  .flip-card .bottom::after {
    top: -35%;
  }
  .card-title{
    font-size: 11px;
  }
}
@media(max-width: 330px){
  .flip-card {
    --_flip-card-size: 65px;
  }
  :root {
    --txt-size-card: 3rem;
  }
}