:root {
    --text-color: #15141A;
    --text-muted: #5B5B66;
    --font-family: Palatino,Georgia,Lucida Bright,Book Antiqua,serif;
    --page-bg: #fff;
    --page-shadow: #F0F0F4;
    --primary-color: #00838F;
    --primary-light: #4DD0E1;
    --primary-dark: #006064;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
}

body {
    display: flex;
    flex-direction: column;

    background: var(--page-bg);

    font-family: var(--font-family);
    line-height: 1.5rem;
}

h1,h2,h3,h4,h5,h6,th{font-weight:400}
h1{font-size:2.488em}
h2{font-size:2.074em}
h3{font-size:1.728em}
h4{font-size:1.44em}
h5{font-size:1.2em}
h6{font-size:1em}
small{font-size:.833em}
h1,h2,h3{line-height:3rem}

main {
    margin-inline: auto;
    max-width: 78ch;
    padding: 1rem;
    margin-block-start: 2rem;
}


header, footer {
    display: flex;
    flex-direction: column;

    padding-inline: 10vw;
}

header {
    background: var(--primary-color);
    color: white;
    margin-block: 0;
    padding-block: 2rem;
    width: 100%;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

section {
    border-top: 1px solid var(--page-shadow);
    padding-block: 1rem;
    scroll-margin-top: 5rem;
}

footer {
    background: var(--primary-dark);
    color: white;
    margin-top: auto;

    @media (max-width: 600px) {
        align-items: center;
    }

    text-align: left;

    font-size: 0.90em;

    margin-block-start: 3rem;
    padding-block: 1rem;

    & p { 
        margin-block: 0.15rem;
    }

    & nav {
        display: flex;
        flex-direction: row;
        gap: 0.5rem;

        @media (max-width: 600px) {
            width: 100%;
            flex-direction: row;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
        }
    }

    & a {
        color: white;
        text-decoration: none;
        
        &:hover {
            text-decoration: underline;
        }
    }
}

address {
    display: inline;
}

.site-nav {
    background: var(--primary-dark);
    width: 100%;
    padding: 1rem 10vw;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.site-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 2rem;
    justify-content: center;
}

.site-nav a {
    color: white;
    text-decoration: none;
    font-size: 1.1em;
    transition: color 0.2s ease;
}

.site-nav a:hover {
    color: rgba(255,255,255,0.8);
}

@media (max-width: 600px) {
    .site-nav ul {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
        padding-block: 0.5rem;
    }

    main {
        margin-block-start: 12rem;
    }

    section {
        scroll-margin-top: 12rem;
    }
}