:root {
    --color-background: #f7f7f5;
    --color-surface: #ffffff;
    --color-text: #20221f;
    --color-link: #27523b;
    --color-border: #d8dbd5;
    --content-width: 72rem;
    --space-page: clamp(1rem, 4vw, 2rem);
    color-scheme: light dark;
    font-family: system-ui, sans-serif;
    line-height: 1.5;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    min-height: 100%;
}

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

a {
    color: var(--color-link);
}

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

.site-header,
.site-footer,
.intro {
    width: min(100%, var(--content-width));
    margin-inline: auto;
    padding: var(--space-page);
}

.site-header,
.site-footer {
    border-color: var(--color-border);
    border-style: solid;
    border-width: 0 0 1px;
}

.site-name {
    color: inherit;
    font-weight: 700;
    text-decoration: none;
}

.site-footer {
    border-width: 1px 0 0;
    font-size: 0.875rem;
}

.site-footer nav {
    display: flex;
    gap: 1rem;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-background: #1d211f;
        --color-surface: #252a27;
        --color-text: #edf0eb;
        --color-link: #a9d9bb;
        --color-border: #434943;
    }
}