:root {
  /* colors */
  --clr-primary-red: hsl(0, 78%, 62%);
  --clr-primary-cyan: hsl(180, 62%, 55%);
  --clr-primary-orange: hsl(34, 97%, 64%);
  --clr-primary-blue: hsl(212, 86%, 64%);

  --clr-neutral-grey-500: hsl(234, 12%, 34%);
  --clr-neutral-grey-400: hsl(212, 6%, 44%);
  --clr-neutral-white: hsl(0, 0%, 100%);

  /* typography */

  --ff-poppins: "Poppins", sans-serif;

  --fs-small: 0.813rem;
  --fs-medium: 1rem;
  --fs-large: 1.25rem;
  --fs-xlarge: 2.25rem;

  --fw-200: 200;
  --fw-400: 400;
  --fw-600: 600;
}

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

img {
  max-width: 100%;
  border: 0;
  display: block;
}

ol[role="list"],
ul[role="list"] {
  list-style: none;
}

html {
  font-family: var(--ff-poppins);
  font-size: 0.875rem;
  font-size: clamp(0.875rem, 0.84rem + 0.18vw, var(--fs-medium));
  line-height: 1.4;
  letter-spacing: 0;
  color: var(--clr-neutral-grey-400);
  background: hsl(0, 0%, 98%);
}

body {
  display: flex;
  flex-flow: column wrap;
  justify-content: center;
  align-items: center;
  max-height: 100%;
  padding: 1rem;
}

h1 {
  font-size: var(--fs-large);
  font-size: clamp(var(--fs-large), 0.96rem + 1.42vw, var(--fs-xlarge));
  font-weight: var(--fw-200);
  line-height: 1.35;
  color: var(--clr-neutral-grey-500);

  & span {
    display: block;
    font-weight: var(--fw-600);
    letter-spacing: 0.25;
    line-height: 1.4;
    margin-block-end: 1rem;
  }
}

.wrapper {
  max-width: 190rem;
}

.wrapper--narrow {
  max-width: 34.375rem;
  margin-inline: auto;
}

header {
  margin-block: 5rem;
  text-align: center;
}

.card-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(5, 0.5fr);
  gap: 2rem;
}

.card {
  display: grid;
  gap: 0.5rem;
  padding: 2rem;
  max-width: 21.875rem;
  border-radius: 0.5rem;
  background: var(--clr-neutral-white);
  box-shadow: 4px 10px 20px hsla(212, 57%, 54%, 0.2);

  & .card-image {
    margin-left: auto;
    margin-block-start: 1.5rem;
    margin-block-end: 1rem;
  }
}

.card-title {
  font-size: var(--fs-large);
  font-weight: var(--fw-600);
}

.cyan {
  grid-column: 1;
  grid-row: 2 / 4;
  border-top: 0.313rem solid var(--clr-primary-cyan);
}

.red {
  grid-column: 2;
  grid-row: 1 / 3;
  border-top: 0.313rem solid var(--clr-primary-red);
}

.orange {
  grid-column: 2;
  grid-row: 3 / 5;
  border-top: 0.313rem solid var(--clr-primary-orange);
}

.blue {
  grid-column: 3;
  grid-row: 2 / 4;
  border-top: 0.313rem solid var(--clr-primary-blue);
}

@media (max-width: 48rem) {
  .card-container {
    grid-template-columns: repeat(4, 0.5fr);
    grid-template-rows: repeat(3, 1fr);
  }

  .cyan {
    grid-column: 2 / 4;
    grid-row: 1;
  }

  .red {
    grid-column: 1 / 3;
    grid-row: 2;
  }

  .orange {
    grid-column: 3 / 5;
    grid-row: 2;
  }

  .blue {
    grid-column: 2 / 4;
    grid-row: 3;
  }
}

@media (max-width: 30em) {
  header {
    margin-block: 3rem;
  }

  .card-container {
    grid-template-columns: 1fr;
    grid-auto-rows: 1fr;

    & > * {
      grid-column: 1;
      margin-inline: auto;
    }

    & .cyan {
      grid-row: 1;
    }

    & .red {
      grid-row: 2;
    }

    & .orange {
      grid-row: 3;
    }

    & .blue {
      grid-row: 4;
    }
  }
}