/* Atlas docs site — minimal, fast, readable. */

:root {
    --fg: #18181a;
    --bg: #ffffff;
    --muted: #6a6a72;
    --brand: hsl(221 83% 53%);
    --border: hsl(214 32% 91%);
    --code-bg: #f4f4f6;
    --max-w: 760px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --fg: #f5f5f7;
        --bg: #000000;
        --muted: #8e8e93;
        --brand: hsl(210 100% 58%);
        --border: hsl(240 5% 16%);
        --code-bg: #1c1c1e;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.65;
    font-size: 17px;
    -webkit-font-smoothing: antialiased;
}

.topbar {
    border-bottom: 1px solid var(--border);
    padding: 0.85rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 2rem;
    max-width: 1100px;
    margin: 0 auto;
}
.brand { font-weight: 700; color: var(--fg); text-decoration: none; }
.topbar nav { display: flex; gap: 1.25rem; }
.topbar nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.topbar nav a:hover { color: var(--fg); }
.topbar nav a.external { margin-left: auto; }

main {
    max-width: var(--max-w);
    margin: 3rem auto;
    padding: 0 1.5rem;
}

h1, h2, h3, h4 {
    line-height: 1.2;
    margin-top: 2.2em;
    letter-spacing: -0.01em;
}
h1 { font-size: 2.2rem; margin-top: 0; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.15rem; }

p, ul, ol, table { margin: 1em 0; }

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

code {
    background: var(--code-bg);
    padding: 0.15em 0.4em;
    border-radius: 4px;
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
    font-size: 0.92em;
}
pre code {
    display: block;
    padding: 1rem;
    overflow-x: auto;
}

table {
    border-collapse: collapse;
    width: 100%;
}
th, td {
    text-align: left;
    border-bottom: 1px solid var(--border);
    padding: 0.5em 0.75em;
}

.muted { color: var(--muted); font-size: 0.9rem; }

footer {
    border-top: 1px solid var(--border);
    padding: 1.5rem;
    max-width: 1100px;
    margin: 4rem auto 0;
}