/* MachXDynamics: restrained test-stand typography.
   No CSS framework, no web fonts from third-party servers, no JS.
   System font stacks only; no externally loaded fonts. */

:root {
    --paper:  #f4f4f1;
    --ink:    #15181c;
    --muted:  #5c6168;
    --accent: #b5481c;   /* oxidised copper, used sparingly */
    --rule:   #c9c8c2;
    --banner: #fff1c2;

    --measure: 38rem;
    --sans: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
    --serif: "Iowan Old Style", "Palatino Linotype", Georgia, serif;
    --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
    :root {
        --paper:  #0d1014;
        --ink:    #e7e6e1;
        --muted:  #9a9ea5;
        --accent: #e07a4a;
        --rule:   #2f343b;
        --banner: #3a3016;
    }
}

* { box-sizing: border-box; }

html { font-size: 17px; }
body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--serif);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration-line: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
    text-decoration-color: var(--rule);
}
a:hover { text-decoration-color: var(--accent); }

.draft-banner {
    background: var(--banner);
    font: 600 0.75rem/1.4 var(--mono);
    letter-spacing: 0.04em;
    text-align: center;
    padding: 0.4rem 1rem;
}

.site-header, .site-footer {
    max-width: 52rem;
    margin: 0 auto;
    padding: 1.25rem 1rem;
    font-family: var(--sans);
}
.site-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1rem;
    border-bottom: 1px solid var(--rule);
}
.brand {
    font-weight: 600;
    letter-spacing: 0.02em;
    text-decoration: none;
}
.site-nav a, .footer-nav a {
    margin-left: 1rem;
    font-size: 0.9rem;
    color: var(--muted);
    text-decoration: none;
}
.site-nav a:hover, .footer-nav a:hover { color: var(--ink); }

main {
    max-width: var(--measure);
    margin: 0 auto;
    padding: 2.5rem 1rem 4rem;
}

h1, h2, h3 {
    font-family: var(--sans);
    line-height: 1.25;
    letter-spacing: -0.005em;
}
h1 { font-size: 1.9rem; margin: 0 0 1rem; }
h2 { font-size: 1.15rem; margin: 2.4rem 0 0.6rem; }
h3 { font-size: 1rem; margin: 1.8rem 0 0.4rem; }

.lead { font-size: 1.2rem; }
.meta, .muted { color: var(--muted); font-size: 0.9rem; }

code, .badge {
    font-family: var(--mono);
    font-size: 0.85em;
}
.badge {
    display: inline-block;
    border: 1px solid var(--rule);
    border-radius: 3px;
    padding: 0.15rem 0.5rem;
    color: var(--muted);
}

hr { border: 0; border-top: 1px solid var(--rule); margin: 2.5rem 0; }

.site-footer {
    border-top: 1px solid var(--rule);
    color: var(--muted);
    font-size: 0.85rem;
}
.footer-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 0.5rem;
}
.footer-nav a:first-child { margin-left: 0; }
.footer-note { max-width: var(--measure); margin-top: 1rem; }

@media (max-width: 480px) {
    .site-nav a, .footer-nav a { margin-left: 0.7rem; }
    h1 { font-size: 1.6rem; }
}