:root {
    color-scheme: light dark;
    --background: #f7f6f2;
    --text: #202020;
    --muted: #666;
    font-family: Georgia, "Times New Roman", serif;
    font-size: 100%;
    line-height: 1.65;
}

* {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    margin: 0;
    color: var(--text);
    background: var(--background);
}

main {
    width: min(44rem, calc(100% - 2.5rem));
    margin-inline: auto;
    padding-block: clamp(2rem, 4vw, 3.5rem) 4rem;
}

.site-header {
    margin-bottom: 2rem;
}

h1 {
    margin: 0 0 0.5rem;
    font-weight: normal;
    font-size: clamp(1.35rem, 1.2rem + 0.5vw, 1.65rem);
    line-height: 1.3;
}

h2 {
    margin: 0;
    font-weight: normal;
    font-size: clamp(1.2rem, 1.1rem + 0.35vw, 1.45rem);
    line-height: 1.35;
}

h3 {
    margin: 0 0 0.75rem;
    color: var(--muted);
    font-size: 1rem;
    font-weight: normal;
    line-height: 1.5;
}

nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem 1.25rem;
}

a {
    color: inherit;
    text-underline-offset: 0.18em;
}

nav a {
    text-decoration: none;
}

nav a[aria-current="page"],
nav a:hover {
    text-decoration: underline;
}

a:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 3px;
}

p {
    margin: 0;
}

p + p {
    margin-top: 1rem;
}

.reading-list,
.notes {
    padding-left: 1.25rem;
}

.reading-list {
    margin: 1.25rem 0 0;
}

.book-meta {
    color: var(--muted);
}

.chapter {
    margin-top: 1.5rem;
}

.chapter + .chapter {
    margin-top: 2.5rem;
}

.notes {
    margin: 0;
}

.notes li + li {
    margin-top: 0.75rem;
}

@media (prefers-color-scheme: dark) {
    :root {
        --background: #111;
        --text: #e8e8e8;
        --muted: #b8b8b8;
    }
}