:root {
    --bg: #ffffff;
    --fg: #1a1a1a;
    --muted: #666666;
    --border: #e5e5e5;
    --accent: #1a1a1a;
    --max-width: 42rem;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #141414;
        --fg: #ededed;
        --muted: #9a9a9a;
        --border: #2c2c2c;
        --accent: #ededed;
    }
}

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

body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
}

.site-header,
.site-main,
.site-footer {
    max-width: var(--max-width);
    margin-inline: auto;
    padding-inline: 1.25rem;
}

.site-header {
    padding-block: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.site-title {
    color: var(--accent);
    font-weight: 600;
    text-decoration: none;
}

.site-main {
    padding-block: 2.5rem;
    min-height: 60vh;
}

.site-footer {
    padding-block: 1.5rem;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.875rem;
}

h1 {
    font-size: 1.75rem;
    line-height: 1.25;
    margin-block: 0 0.75rem;
}

.placeholder p {
    color: var(--muted);
}