:root {
    --text-colour: dark;
    --bg-colour: #fdf4ff;
    --font-size: 1rem;
}

[data-theme="dark"] {
    --text-colour: white;
    --bg-colour: #18181b;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}

body {
    min-height: 100dvh;
    color: var(--text-colour);
    background-color: var(--bg-colour);
    padding: 1rem;
    font-size: var(--font-size);
    transition-property: color, background-color, border-color, outline-color, text-decoration-color, fill, stroke;
}

body>* {
    margin-bottom: 8px;
}

nav {
    display: grid;
    align-items: center;
    grid-template-columns: repeat(3, minmax(0, 1fr));

    @media screen and (width <=640px) {
        grid-template-columns: repeat(1, minmax(0, 1fr));
    }

    h1 {
        font-weight: 400;
    }

    div#nav-links {
        text-align: center;

        a {
            padding-inline: 4px;
        }
    }
}

a {
    color: var(--text-colour);
}

hr {
    margin-bottom: 16px;
}

p {
    padding-bottom: 6px;
    line-height: 1.25;
}

.btn {
    width: fit-content;
    border-radius: 6px;
    justify-self: flex-end;
    background-color: transparent;
    border-width: 1px;
    border-style: solid;
    padding: 4px;
    font-size: var(--font-size);
    color: var(--text-colour);
    border-color: var(--text-colour);
    cursor: pointer;
}

ul {
    padding-left: 16px;
}

p.small-text {
    font-size: 8px;
}