@import url("https://fonts.googleapis.com/css2?family=League+Spartan:wght@400;500;600;700;800;900&display=swap");

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

body {
  display: grid;
  place-items: center;
  font-family: "League Spartan", system-ui, sans-serif;
  font-size: 1.1rem;
  line-height: 1.2;
  background-color: #212121;
  color: #ddd;
}

/*header*/
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;800&display=swap");

:root {
  --bg: #00000000;
  --clr-1: #ff0000;
  --clr-2: #15fd00;
  --clr-3: #00fff2;
  --clr-4: #d903ff;

  --blur: 6rem;
  --fs: clamp(3rem, 6vw, 5rem);
  --ls: clamp(-7.15px, -2.90vw, -7.5px);
}

.content {
  text-align: center;
}

.title {
  font-size: var(--fs);
  font-weight: 800;
  letter-spacing: var(--ls);
  position: relative;
  overflow: hidden;
  background: var(--bg);
  margin: 0;
}

.aurora {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  mix-blend-mode: darken;
  pointer-events: none;
}

.aurora__item {
  overflow: hidden;
  position: absolute;
  width: 100vw;
  height: 5vw;
  background-color: var(--clr-1);
  border-radius: 37% 29% 27% 27% / 28% 25% 41% 37%;
  filter: blur(var(--blur));
  mix-blend-mode: overlay;
}

.aurora__item:nth-of-type(1) {
  top: -50%;
  animation: aurora-border 6s ease-in-out infinite,
    aurora-1 12s ease-in-out infinite alternate;
}

.aurora__item:nth-of-type(2) {
  background-color: var(--clr-3);
  right: 0;
  top: 0;
  animation: aurora-border 6s ease-in-out infinite,
    aurora-2 12s ease-in-out infinite alternate;
}

.aurora__item:nth-of-type(3) {
  background-color: var(--clr-2);
  left: 0;
  bottom: 0;
  animation: aurora-border 6s ease-in-out infinite,
    aurora-3 8s ease-in-out infinite alternate;
}

.aurora__item:nth-of-type(4) {
  background-color: var(--clr-4);
  right: 0;
  bottom: -50%;
  animation: aurora-border 6s ease-in-out infinite,
    aurora-4 24s ease-in-out infinite alternate;
}

@keyframes aurora-1 {
  0% {
    top: 0;
    right: 0;
  }

  50% {
    top: 100%;
    right: 75%;
  }

  75% {
    top: 100%;
    right: 25%;
  }

  100% {
    top: 0;
    right: 0;
  }
}

@keyframes aurora-2 {
  0% {
    top: -50%;
    left: 0%;
  }

  60% {
    top: 100%;
    left: 75%;
  }

  85% {
    top: 100%;
    left: 25%;
  }

  100% {
    top: -50%;
    left: 0%;
  }
}

@keyframes aurora-3 {
  0% {
    bottom: 0;
    left: 0;
  }

  40% {
    bottom: 100%;
    left: 75%;
  }

  65% {
    bottom: 40%;
    left: 50%;
  }

  100% {
    bottom: 0;
    left: 0;
  }
}

@keyframes aurora-4 {
  0% {
    bottom: -50%;
    right: 0;
  }

  50% {
    bottom: 0%;
    right: 40%;
  }

  90% {
    bottom: 50%;
    right: 25%;
  }

  100% {
    bottom: -50%;
    right: 0;
  }
}

@keyframes aurora-border {
  0% {
    border-radius: 37% 29% 27% 27% / 28% 25% 41% 37%;
  }

  25% {
    border-radius: 47% 29% 39% 49% / 61% 19% 66% 26%;
  }

  50% {
    border-radius: 57% 23% 47% 72% / 63% 17% 66% 33%;
  }

  75% {
    border-radius: 28% 49% 29% 100% / 93% 20% 64% 25%;
  }

  100% {
    border-radius: 37% 29% 27% 27% / 28% 25% 41% 37%;
  }
}

/* final header**/

ul {
  list-style: none;
}

.main {
  max-width: 75rem;
  padding: 3em 1.5em;
  margin: 6rem 0 0rem 0;

}

.main__heading {
  font-weight: 600;
  font-size: 2.25em;
  text-align: center;
  color: #eceff1;
}

.cards {
  position: relative;
}

.cards__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5em;
}

.card {
  --flow-space: 0.5em;
  --hsl: var(--hue), var(--saturation), var(--lightness);
  flex: 1 1 14rem;
  padding: 1.5em 2em;
  display: grid;
  grid-template-rows: auto auto auto 1fr;
  align-items: start;
  gap: 1.25em;
  color: #eceff1;
  background-color: #2b2b2b;
  border: 1px solid #eceff133;
  border-radius: 15px;
}

.card:nth-child(1) {
  --hue: 165;
  --saturation: 82.26%;
  --lightness: 51.37%;
}

.card:nth-child(2) {
  --hue: 291.34;
  --saturation: 95.9%;
  --lightness: 61.76%;
}

.card:nth-child(3) {
  --hue: 338.69;
  --saturation: 100%;
  --lightness: 48.04%;
}

.card__bullets {
  line-height: 1.4;
}

.card__bullets li::before {
  display: inline-block;
  content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512' width='16' title='check' fill='%23dddddd'%3E%3Cpath d='M173.898 439.404l-166.4-166.4c-9.997-9.997-9.997-26.206 0-36.204l36.203-36.204c9.997-9.998 26.207-9.998 36.204 0L192 312.69 432.095 72.596c9.997-9.997 26.207-9.997 36.204 0l36.203 36.204c9.997 9.997 9.997 26.206 0 36.204l-294.4 294.401c-9.998 9.997-26.207 9.997-36.204-.001z' /%3E%3C/svg%3E");
  transform: translatey(0.25ch);
  margin-right: 1ch;
}

.card__heading {
  font-size: 1.05em;
  font-weight: 600;
}

.card__price {
  font-size: 1.75em;
  font-weight: 700;
}

.flow > * + * {
  margin-top: var(--flow-space, 1.25em);
}

.cta {
  display: block;
  align-self: end;
  margin: 1em 0 0.5em 0;
  text-align: center;
  text-decoration: none;
  color: #fff;
  background-color: #0d0d0d;
  padding: 0.7em;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
}

.overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  user-select: none;
  opacity: var(--opacity, 0);
  -webkit-mask: radial-gradient(
    25rem 25rem at var(--x) var(--y),
    #000 1%,
    transparent 50%
  );
  mask: radial-gradient(
    25rem 25rem at var(--x) var(--y),
    #000 1%,
    transparent 50%
  );
  transition: 400ms mask ease;
  will-change: mask;
}

.overlay .card {
  background-color: hsla(var(--hsl), 0.15);
  border-color: hsla(var(--hsl), 1);
  box-shadow: 0 0 0 1px inset hsl(var(--hsl));
}

.overlay .cta {
  display: block;
  grid-row: -1;
  width: 100%;
  background-color: hsl(var(--hsl));
  box-shadow: 0 0 0 1px hsl(var(--hsl));
}

:not(.overlay) > .card {
  transition: 400ms background ease;
  will-change: background;
}

:not(.overlay) > .card:hover {
  --lightness: 95%;
  background: hsla(var(--hsl), 0.1);
}