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

body {
  min-height: 100vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  background-color: #1d1546;
}

.container {
  --offset-x: 20px;
  width: 100%;
  max-width: calc(1165px + (var(--offset-x) * 2));
  padding: 0 var(--offset-x);
  margin: 0 auto;
  background-color: #1d1546;
}

.marathon {
  background-color: #1d1546;
  flex: 1;
  font-family: "Fira Sans", sans-serif;
  color: white;
  line-height: 1.2;
}

.marathon__title {
  font-size: clamp(18px, 4vw, 40px);
  margin: 0;
  padding: 20px 0 30px;
}

.marathon-list {
  padding: 0;
  margin: 0;
  list-style-type: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px 25px;
  counter-reset: list-item;
}

.marathon-list__item {
  counter-increment: list-item;
}

.marathon__illustration {
  display: block;
  width: 100%;
  height: auto;
  position: relative;
  top: -75px;
  transform: scaleX(-1);
}

.marathon-card {
  text-align: center;
  filter: drop-shadow(0px 7px 13px rgba(15, 9, 41, 0.8));
  position: relative;
  z-index: 2;
}

.marathon-card::before {
  content: "";
  position: absolute;
  top: -8px;
  left: -8px;
  right: -8px;
  bottom: -8px;
  width: calc(100% + 16px);
  height: calc(100% + 16px - 10px);
  background: rgba(100, 87, 255, 0.5);
  filter: blur(14px);
  border-radius: 10px;
  transition: opacity 300ms;
  opacity: 0;
}

.marathon-card:hover::before {
  opacity: 1;
}

.marathon-card--completed .marathon-card__main {
  border-color: #ffbd1e;
}

.marathon-card__main {
  padding: clamp(9px, 2vw, 20px);
  background-image: linear-gradient(180deg, #302773 0%, #21184f 100%);
  border-width: 3px;
  border-style: solid;
  border-color: #5e569b;
  border-radius: 5px;
  position: relative;
  z-index: 1;
  box-shadow: 0px 6px 6px rgba(29, 21, 70, 0.5);
}

.marathon-card__lead {
  margin: 0;
  padding-bottom: clamp(7px, 2vw, 10px);
  font-size: clamp(12px, 2.5vw, 22px);
  font-weight: 700;
}

.marathon-card__number {
  margin: 0;
  padding-bottom: 12px;
  font-weight: 900;
  font-size: clamp(30px, 7vw, 60px);
  text-shadow: 0px 6px 6px rgba(0, 0, 0, 0.25);
}

.marathon-card__link {
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}

.marathon-card__checkmark {
  position: absolute;
  width: clamp(32px, 5.5vw, 60px);
  height: auto;
  right: -5px;
  bottom: 5px;
  display: none;
}

.marathon-card--completed .marathon-card__checkmark {
  display: block;
}

.marathon-card__stars {
  background: #5e569b;
  box-shadow: inset 2px 0 3px rgba(29, 21, 70, 0.3),
    inset -2px 0px 3px rgba(29, 21, 70, 0.3);
  border-bottom-left-radius: 10px;
  border-bottom-right-radius: 10px;
  position: relative;
  top: -5px;
  z-index: 0;
  padding: 10px 8px 5px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 5px;
}

.marathon-card__star {
  position: relative;
}

.marathon-card__star--completed {
  filter: drop-shadow(0 2px 12px #ff7a00);
}

.marathon-card__star--completed::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -5px;
  width: 100%;
  height: 1px;
  background-image: linear-gradient(
    270deg,
    rgba(255, 187, 28, 0) 0%,
    #ffd93a 52.6%,
    rgba(255, 191, 31, 0) 100%
  );
  opacity: 0.8;
}

.marathon-card__stars img {
  display: block;
  width: 100%;
  height: auto;
}

@media (min-width: 576px) {
  .marathon__title {
    padding: 30px 0 40px;
  }

  .marathon-card__main {
    border-radius: 10px;
  }

  .marathon-card__number {
    padding-bottom: 13px;
  }

  .marathon-card__checkmark {
    right: -7px;
    bottom: 7px;
  }

  .marathon-card__stars {
    gap: 10px;
    padding: 18px 15px 9px;
    top: -10px;
    box-shadow: inset 5px 0 8px rgba(29, 21, 70, 0.3),
      inset -5px 0 8px rgba(29, 21, 70, 0.3);
  }

  .marathon-card__star--completed::after {
    bottom: -9px;
    height: 2px;
  }
}

@media (min-width: 700px) {
  .marathon-list {
    grid-template-columns: repeat(4, 1fr);
  }

  .marathon__illustration {
    transform: scaleX(1);
    top: -10px;
  }
}

@media (min-width: 768px) {
  .marathon__title {
    padding: 30px 0 70px;
  }

  .marathon-list {
    grid-template-columns: repeat(4, 1fr);
    gap: 40px 60px;
  }

  .marathon-card__checkmark {
    right: -10px;
    bottom: 10px;
  }
}

@media (min-width: 992px) {
  .marathon-list {
    grid-template-columns: repeat(5, 1fr);
  }
}

@media (min-width: 1200px) {
  .marathon-list {
    gap: 60px 85px;
  }
}