:root {
    /*------------- FONT FAMILY -------------*/
    --font-family: "Outfit", sans-serif;

    /*------------- FONT SIZE -------------*/
    --font-size-lg: 1.6rem;
    --font-size-md: 1.4rem;
    --font-size-sm: 1.2rem;

    /*------------- FONT WEIGHT -------------*/
    --font-weight-regular:400;
    --font-weight-bold:700;

    /*------------- COLORS -------------*/
    --primary-bg:hsl(212, 45%, 89%);
    --white:hsl(0, 0%, 100%);
    --primary-text:hsl(218, 44%, 22%);
    --secondary-text:hsl(216, 15%, 48%);
}

html {
    font-size: 62.5%;
}

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

body {
    height: 100vh;
    background-color: var(--primary-bg);
    font-family: var(--font-family);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.qr-code-card {
    background-color: var(--white);
    max-width: 26rem;
    width: 90%;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
    padding: 1.5rem;
    border-radius: 1rem;
}

.qr-code-image {
    width: 100%;
    border-radius: 1rem;
}

.card-heading {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--primary-text);
}

.card-text {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-regular);
    color: var(--secondary-text);
    line-height: 1.5;
}

.attribution {
    font-size: var(--font-size-sm);
}

.attribution a:link, .attribution a:visited {
    text-decoration: none;
    color: var(--primary-text);
}

.attribution a:hover, .attribution a:active {
    text-decoration: underline;
    font-size: var(--font-size-md);
}