:root {
    --red: hsl(0, 78%, 62%);
    --cyan: hsl(180, 62%, 55%);
    --orange: hsl(34, 97%, 64%);
    --blue: hsl(212, 86%, 64%);
    --grey-500: hsl(234, 12%, 34%);
    --grey-400: hsl(212, 6%, 44%);
    --white: hsl(0, 0%, 100%);
    --card-shadow: 0 0.666rem 1.333rem rgba(0, 0, 0, 0.1);

    /* Font sizes */
    --font-body: clamp(0.9375rem, 0.5vw + 0.5rem, 1.125rem);
    --font-h2: clamp(1.125rem, 1vw + 0.5rem, 1.5rem);
    --font-subheading: clamp(1.1rem, 1vw + 0.5rem, 1.5rem);
    --font-intro: clamp(0.9rem, 0.5vw + 0.5rem, 1rem);
    --font-footer: clamp(0.85rem, 0.5vw + 0.5rem, 1rem);
}

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

body {
    font-family: 'Poppins', sans-serif;
    font-size: var(--font-body);
    background-color: var(--white);
    color: var(--grey-500);
    line-height: 1.6;
    padding: clamp(1.5rem, 2vw, 2rem) clamp(0.5rem, 2vw, 1rem);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}



.section-header {
    text-align: center;
    max-inline-size: 36rem;
    margin-block-end: clamp(1rem, 3vw, 3rem);
    margin-inline: auto;
    padding-inline: 1rem;
}
.subheading {
    font-weight: 200;
    color: var(--grey-500);
    opacity: 0.7;
    font-size: var(--font-subheading);
    margin-block-end: 0.5rem;
}

.section-header h2 {
    font-weight: 600;
    font-size: var(--font-h2);
    margin-block-end: 1rem;
}

.intro {
    color: var(--grey-400);
    font-weight: 400;
    font-size: var(--font-intro);
}


.cards-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: clamp(1rem, 3vw, 2rem);
    margin-block: clamp(1rem, 4vw, 2rem);
    margin-inline: auto;
    max-inline-size: 23.333rem;
}

.card {
    background-color: var(--white);
    padding: clamp(1.5rem, 2vw, 2rem);
    border-radius: 0.5rem;
    box-shadow: var(--card-shadow);
    border-block-start: 0.266rem solid var(--cyan);
    text-align: left;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-block-size: 16.666rem;
    /* 250px */
}



.card img {
    inline-size: 4rem;
    margin-block-start: clamp(1rem, 3vw, 2rem);
    align-self: flex-end;
}

.card__title {
    font-weight: 600;
    margin-block-end: clamp(0.5rem , 1vw, 1rem);
    color: var(--grey-500);
}

.card__description {
    color: var(--grey-400);
}

.card-supervisor {
    border-block-start-color: var(--cyan);
}

.card-team-builder {
    border-block-start-color: var(--red);
}

.card-karma {
    border-block-start-color: var(--orange);
}

.card-calculator {
    border-block-start-color: var(--blue);
}

.site-footer {
    margin-block-start: 4rem;
    padding: clamp(1.5rem, 2vw, 2rem) clamp(0.5rem, 2vw, 1rem);

    text-align: center;
    font-size: var(--font-footer);
    color: var(--grey-400);
}

.site-footer a {
    color: var(--grey-500);
    text-decoration: none;
    font-weight: 500;
}

/* Desktop view */
@media (min-width: 48em) {
    .cards-grid {
        max-inline-size: 73.333rem;
        /* 1100px */
        margin-inline: auto;
        grid-template-columns: repeat(3, 1fr);
        grid-template-rows: auto 0.5fr auto;
        gap: 2rem;
        grid-template-areas:
            ".   team-builder   ."
            "supervisor . calculator"
            ". karma .";
    }

    .card-supervisor {
        grid-area: supervisor;
        margin-block-start: 2em;
    }

        

    .card-team-builder {
        grid-area: team-builder;
        margin-block-end: -10em;
    }

    .card-karma {
        grid-area: karma;
        margin-block-start: -10em;
    }

    .card-calculator {
        grid-area: calculator;
    }
}