/* ==========================================================================
   RDF-H specification — readability stylesheet
   Presentation only; layered on top of ReSpec's base theme
   (respecConfig.useW3CStyle = false).

   IMPORTANT: All content rules are scoped under `html body section ...` so they
   apply ONLY to the spec body. ReSpec's generated title/metadata header
   (`div.head`: title, editors, version, status) and the table of contents
   (`nav#toc`) are deliberately left with their original ReSpec styling. Only the
   page frame (centering/padding) is set on `body`.
   ========================================================================== */

:root {
    --rdfh-ink: #1f2328;
    --rdfh-muted: #57606a;
    --rdfh-accent: #0b6bcb;
    --rdfh-rule: #d0d7de;
    --rdfh-code-bg: #f6f8fa;
    --rdfh-note-bg: #eef5fd;
    --rdfh-note-bar: #0b6bcb;
    --rdfh-example-bg: #f3faf4;
    --rdfh-example-bar: #2da44e;
    --rdfh-content: 52rem;
}

/* ---- Page frame (layout only; header keeps its original typography) ---- */
html body {
    max-width: var(--rdfh-content);
    margin: 0 auto;
    padding: 1.5rem 1.5rem 6rem;
}

/* ---- Content typography (scoped to spec sections) ---------------------- */
html body section {
    color: var(--rdfh-ink);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
        Arial, sans-serif;
    font-size: 18px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

html body section p,
html body section li,
html body section dd {
    /* keep the measure comfortable even inside wider containers */
    max-width: 42rem;
}

/* ---- Headings (content only; the title h1 is left to ReSpec) ----------- */
html body section h2,
html body section h3,
html body section h4,
html body section h5 {
    line-height: 1.25;
    font-weight: 650;
    color: var(--rdfh-ink);
    scroll-margin-top: 1rem;
}
html body section h2 {
    margin-top: 2.75rem;
    padding-bottom: 0.3rem;
    border-bottom: 1px solid var(--rdfh-rule);
    font-size: 1.6rem;
}
html body section h3 {
    margin-top: 2rem;
    font-size: 1.25rem;
}
html body section h4 {
    margin-top: 1.5rem;
    font-size: 1.05rem;
    color: var(--rdfh-muted);
}

/* ---- Links (content only; metadata/editor links keep ReSpec styling) --- */
html body section a {
    color: var(--rdfh-accent);
    text-decoration: none;
}
html body section a:hover {
    text-decoration: underline;
}

/* ---- Inline code ------------------------------------------------------- */
html body section code {
    font-family: "SFMono-Regular", "JetBrains Mono", Consolas, "Liberation Mono",
        Menlo, monospace;
    font-size: 0.86em;
    background: var(--rdfh-code-bg);
    padding: 0.12em 0.36em;
    border-radius: 5px;
    border: 1px solid var(--rdfh-rule);
    color: #1f2328;
    word-break: break-word;
}

/* ---- Code blocks ------------------------------------------------------- */
html body section pre {
    background: var(--rdfh-code-bg);
    border: 1px solid var(--rdfh-rule);
    border-left: 4px solid #8aa4c2;
    border-radius: 8px;
    padding: 1rem 1.1rem;
    overflow-x: auto;
    font-size: 0.82rem;
    line-height: 1.55;
    margin: 1.1rem 0;
    max-width: 100%;
}
html body section pre code {
    /* reset inline-code chrome inside blocks */
    background: none;
    border: 0;
    padding: 0;
    font-size: inherit;
    border-radius: 0;
}
/* language hint on fenced spec blocks */
html body section pre.turtle,
html body section pre.sparql {
    position: relative;
}
html body section pre.turtle::before,
html body section pre.sparql::before {
    position: absolute;
    top: 0;
    right: 0;
    padding: 0.1rem 0.55rem;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--rdfh-muted);
    background: #e7edf3;
    border-bottom-left-radius: 6px;
    border-left: 1px solid var(--rdfh-rule);
    border-bottom: 1px solid var(--rdfh-rule);
}
html body section pre.turtle::before {
    content: "Turtle";
}
html body section pre.sparql::before {
    content: "SPARQL";
}

/* ---- Callouts: notes & examples --------------------------------------- */
html body section .note,
html body section .example {
    border-radius: 8px;
    padding: 0.85rem 1.1rem;
    margin: 1.2rem 0;
    font-size: 0.96em;
}
html body section .note {
    background: var(--rdfh-note-bg);
    border: 1px solid #cfe2f7;
    border-left: 4px solid var(--rdfh-note-bar);
}
html body section .example {
    background: var(--rdfh-example-bg);
    border: 1px solid #d3ecd8;
    border-left: 4px solid var(--rdfh-example-bar);
}
/* let code blocks sit flush inside an example callout */
html body section .example pre {
    border-left-width: 1px;
    background: #fff;
}
html body section .note p:last-child,
html body section .example p:last-child {
    margin-bottom: 0;
}

/* ---- Tables ------------------------------------------------------------ */
html body section table {
    border-collapse: collapse;
    margin: 1.3rem 0;
    width: 100%;
    font-size: 0.92rem;
}
html body section table th,
html body section table td {
    border: 1px solid var(--rdfh-rule);
    padding: 0.5rem 0.75rem;
    text-align: left;
    vertical-align: top;
}
html body section table thead th {
    background: #eef1f4;
    font-weight: 650;
}
html body section table tbody tr:nth-child(even) {
    background: #fafbfc;
}

/* ---- Definition lists (vocabulary terms) ------------------------------- */
html body section dl dt {
    font-weight: 650;
    margin-top: 1.1rem;
}
html body section dl dd {
    margin: 0.3rem 0 0.6rem 1.5rem;
}

/* ---- RFC 2119 keywords ------------------------------------------------- */
html body section em.rfc2119 {
    font-style: normal;
    font-variant: small-caps;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: #6b3fa0;
}

/* ---- Lists ------------------------------------------------------------- */
html body section ol,
html body section ul {
    padding-left: 1.4rem;
}
html body section li {
    margin: 0.3rem 0;
}

/* ---- Responsive -------------------------------------------------------- */
@media (max-width: 40rem) {
    html body {
        padding: 1rem 1rem 4rem;
    }
    html body section {
        font-size: 16px;
    }
    html body section p,
    html body section li,
    html body section dd {
        max-width: none;
    }
}