/* RTFM public site (CC-032). Self-contained: no external fonts, no CDN, no frameworks. System font stack, unicode/inline-SVG icons only. Themed via a `data-theme` attribute on , set by an inline script in before first paint (see site/_layout.html) so there is no flash of the wrong theme. Without JS the page still themes correctly, from `prefers-color-scheme` alone — the toggle button is a progressive enhancement on top of that. */ :root { color-scheme: light dark; --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; --font-mono: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace; --bg: #ffffff; --bg-raised: #f5f7fa; --fg: #14171c; --fg-muted: #5b6270; --border: #dde1e7; --accent: #2a5ea8; --accent-fg: #ffffff; --code-bg: #f1f3f6; --focus: #2a5ea8; --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem; --space-5: 1.5rem; --space-6: 2.25rem; --space-7: 3.5rem; --space-8: 5rem; --measure: 68ch; --wrap: 72rem; --radius: 0.5rem; } @media (prefers-color-scheme: dark) { :root:not([data-theme]) { --bg: #101317; --bg-raised: #181c22; --fg: #e8eaee; --fg-muted: #9aa2af; --border: #2b3038; --accent: #7ba9e0; --accent-fg: #101317; --code-bg: #181c22; --focus: #7ba9e0; } } :root[data-theme="dark"] { --bg: #101317; --bg-raised: #181c22; --fg: #e8eaee; --fg-muted: #9aa2af; --border: #2b3038; --accent: #7ba9e0; --accent-fg: #101317; --code-bg: #181c22; --focus: #7ba9e0; } /* Wins over the media-query dark block even when specificity ties, because it is declared later: a person who explicitly picks light while their system prefers dark must get light. */ :root[data-theme="light"] { --bg: #ffffff; --bg-raised: #f5f7fa; --fg: #14171c; --fg-muted: #5b6270; --border: #dde1e7; --accent: #2a5ea8; --accent-fg: #ffffff; --code-bg: #f1f3f6; --focus: #2a5ea8; } *, *::before, *::after { box-sizing: border-box; } html { -webkit-text-size-adjust: 100%; } body { margin: 0; background: var(--bg); color: var(--fg); font-family: var(--font-sans); line-height: 1.6; overflow-x: hidden; } h1, h2, h3 { font-weight: 700; line-height: 1.25; } p { margin: 0 0 var(--space-4); } a { color: var(--accent); } a:hover { text-decoration: underline; } code { font-family: var(--font-mono); font-size: 0.9em; background: var(--code-bg); padding: 0.1em 0.35em; border-radius: 0.3rem; } pre code { background: none; padding: 0; } :focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 0.2rem; } .muted { color: var(--fg-muted); } /* -- skip link ---------------------------------------------------------- */ .skip-link { position: absolute; left: -9999px; top: 0; z-index: 100; background: var(--accent); color: var(--accent-fg); padding: var(--space-2) var(--space-4); border-radius: 0 0 var(--radius) 0; text-decoration: none; } .skip-link:focus { left: 0; } /* -- header --------------------------------------------------------------- */ .site-header { border-bottom: 1px solid var(--border); position: sticky; top: 0; background: var(--bg); z-index: 10; } .header-inner { max-width: var(--wrap); margin: 0 auto; display: flex; align-items: center; gap: var(--space-5); padding: var(--space-3) var(--space-4); flex-wrap: wrap; } .brand { font-weight: 700; font-size: 1.15rem; letter-spacing: 0.02em; color: var(--fg); text-decoration: none; } .site-nav ul { display: flex; flex-wrap: wrap; gap: var(--space-4); list-style: none; margin: 0; padding: 0; } .site-nav a { color: var(--fg-muted); text-decoration: none; padding-bottom: 0.2rem; border-bottom: 2px solid transparent; } .site-nav a:hover { color: var(--fg); } .site-nav a[aria-current="page"] { color: var(--fg); font-weight: 600; border-bottom-color: var(--accent); } .repo-link { margin-left: auto; color: var(--fg-muted); text-decoration: none; font-size: 0.9rem; white-space: nowrap; } .repo-link:hover { color: var(--accent); } .theme-toggle { border: 1px solid var(--border); background: var(--bg-raised); color: var(--fg); border-radius: 999px; width: 2.25rem; height: 2.25rem; flex-shrink: 0; display: inline-flex; align-items: center; justify-content: center; font-size: 1rem; line-height: 1; cursor: pointer; } .theme-toggle:hover { border-color: var(--accent); } .theme-icon.icon-light { display: none; } :root[data-theme="dark"] .theme-icon.icon-dark { display: none; } :root[data-theme="dark"] .theme-icon.icon-light { display: inline; } @media (prefers-color-scheme: dark) { :root:not([data-theme]) .theme-icon.icon-dark { display: none; } :root:not([data-theme]) .theme-icon.icon-light { display: inline; } } :root[data-theme="light"] .theme-icon.icon-dark { display: inline; } :root[data-theme="light"] .theme-icon.icon-light { display: none; } /* -- page header ------------------------------------------------------------ */ .page-header { max-width: var(--wrap); margin: 0 auto; padding: var(--space-7) var(--space-4) var(--space-5); } .page-header h1 { font-size: 2.15rem; margin: 0 0 var(--space-3); } .page-lead { color: var(--fg-muted); max-width: var(--measure); font-size: 1.1rem; margin: 0; } /* -- hero (home only) -------------------------------------------------------- */ .hero { padding: var(--space-8) var(--space-4) var(--space-6); border-bottom: 1px solid var(--border); } .hero-inner { max-width: var(--wrap); margin: 0 auto; } .hero-headline { font-size: clamp(2rem, 1.2rem + 3vw, 3.25rem); max-width: 22ch; margin: 0 0 var(--space-3); } .hero-subhead { font-size: 1.15rem; color: var(--fg-muted); max-width: var(--measure); margin: 0 0 var(--space-5); } .hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-bottom: var(--space-4); } .hero-note { margin: 0 0 var(--space-6); } .hero-search { max-width: 30rem; padding-top: var(--space-5); border-top: 1px solid var(--border); } .hero-search-label { display: block; font-size: 0.85rem; color: var(--fg-muted); margin-bottom: var(--space-2); } .hero-search-row { display: flex; gap: var(--space-2); } .hero-search-row input { flex: 1; min-width: 0; padding: var(--space-2) var(--space-3); border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-raised); color: var(--fg); font: inherit; } .hero-search-row button { flex-shrink: 0; border: 1px solid transparent; border-radius: var(--radius); background: var(--accent); color: var(--accent-fg); padding: var(--space-2) var(--space-4); font-weight: 600; font: inherit; cursor: pointer; } .hero-search-note { font-size: 0.8rem; max-width: var(--measure); margin: var(--space-2) 0 0; } /* -- buttons ----------------------------------------------------------------- */ .btn { display: inline-flex; align-items: center; justify-content: center; padding: var(--space-2) var(--space-5); border-radius: var(--radius); font-weight: 600; font-size: 0.95rem; text-decoration: none; border: 1px solid transparent; transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease; } .btn-primary { background: var(--accent); color: var(--accent-fg); } .btn-primary:hover { background: color-mix(in srgb, var(--accent) 85%, black); text-decoration: none; } .btn-secondary { background: transparent; border-color: var(--border); color: var(--fg); } .btn-secondary:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; } /* -- sections ------------------------------------------------------------------ */ .section { padding: var(--space-7) var(--space-4); border-bottom: 1px solid var(--border); } .section:last-of-type { border-bottom: none; } .section-title, .section-lead, .section-content { max-width: var(--wrap); margin-left: auto; margin-right: auto; } .section-title { font-size: 1.5rem; margin-bottom: var(--space-3); scroll-margin-top: 4.5rem; } .section-title .anchor { color: inherit; text-decoration: none; } .section-title .anchor:hover { text-decoration: underline; } .section-lead { color: var(--fg-muted); font-size: 1.05rem; margin-bottom: var(--space-5); } .section-lead, .section-content > p { max-width: var(--measure); } .section-content > p:last-child { margin-bottom: 0; } /* -- cards (Section.items) ------------------------------------------------------- */ .cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: var(--space-4); } .cards + p, p + .cards { margin-top: var(--space-4); } .card { border: 1px solid var(--border); border-radius: var(--radius); padding: var(--space-4); background: var(--bg-raised); } .card-kicker { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--accent); font-weight: 700; margin: 0 0 var(--space-2); } .card-title { font-size: 1.05rem; margin: 0 0 var(--space-2); } .card-body { color: var(--fg-muted); margin: 0; } /* -- snippets (Section.snippets) -------------------------------------------------- */ .snippet { margin: var(--space-4) 0; border: 1px solid var(--border); border-radius: var(--radius); background: var(--code-bg); overflow: hidden; } .snippet-head { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); padding: var(--space-2) var(--space-3); background: var(--bg-raised); border-bottom: 1px solid var(--border); } .snippet-label { font-family: var(--font-mono); font-size: 0.8rem; color: var(--fg-muted); } .snippet-code { margin: 0; padding: var(--space-3); overflow-x: auto; } .snippet-code code { font-size: 0.85rem; white-space: pre; } /* Hidden until JS marks — a copy button that does nothing without JS is worse than no button at all. */ .copy-btn { display: none; font-size: 0.78rem; padding: var(--space-1) var(--space-3); border-radius: var(--radius); border: 1px solid var(--border); background: var(--bg); color: var(--fg); cursor: pointer; flex-shrink: 0; } .js .copy-btn { display: inline-flex; } .copy-btn:hover { border-color: var(--accent); color: var(--accent); } .copy-feedback { margin: 0; padding: 0; font-size: 0.78rem; color: var(--accent); min-height: 0; } .copy-feedback:not(:empty) { padding: var(--space-1) var(--space-3) 0; } .snippet-note { margin: 0; padding: var(--space-2) var(--space-3); font-size: 0.82rem; color: var(--fg-muted); border-top: 1px solid var(--border); } /* -- tables (fields, tools' body kept as list below, compare, benchmark) -------- */ .table-scroll { overflow-x: auto; margin: var(--space-4) 0; } table { border-collapse: collapse; width: 100%; } table th, table td { text-align: left; padding: var(--space-2) var(--space-3); border-bottom: 1px solid var(--border); vertical-align: top; } table thead th { color: var(--fg-muted); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; border-bottom: 2px solid var(--border); white-space: nowrap; } table.fields code { white-space: nowrap; } table.compare { min-width: 58rem; } table.compare th[scope="row"] { min-width: 7rem; white-space: nowrap; } table.compare th[scope="col"], table.compare td { min-width: 11rem; } table.benchmark { min-width: 60rem; } .benchmark-meta { max-width: var(--wrap); margin: 0 auto var(--space-4); font-size: 0.85rem; } .visually-hidden { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; } /* -- tools (Section.tools, /docs) ------------------------------------------------ */ .tools { display: grid; gap: var(--space-3); } .tool { border: 1px solid var(--border); border-radius: var(--radius); padding: var(--space-3) var(--space-4); background: var(--bg-raised); } .tool-signature { font-family: var(--font-mono); font-size: 0.9rem; margin: 0 0 var(--space-1); } .tool-signature .badge { font-family: var(--font-sans); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--accent); border: 1px solid var(--border); border-radius: 999px; padding: 0.05rem 0.5rem; margin-left: var(--space-2); } .tool-body { color: var(--fg-muted); margin: 0; } /* -- docs table of contents ------------------------------------------------------ */ .docs-layout { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--space-4) var(--space-7); } .docs-toc { border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-raised); padding: var(--space-3) var(--space-4); margin-bottom: var(--space-5); } .docs-toc-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--fg-muted); margin: 0 0 var(--space-2); } .docs-toc ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: var(--space-1) var(--space-4); } .docs-toc a { color: var(--fg); text-decoration: none; font-size: 0.9rem; } .docs-toc a:hover { color: var(--accent); } .docs-body .section:first-child { padding-top: 0; } @media (min-width: 62rem) { .docs-layout { display: grid; grid-template-columns: 14rem minmax(0, 1fr); align-items: start; gap: var(--space-6); } .docs-toc { position: sticky; top: 4.5rem; margin-bottom: 0; } .docs-toc ul { flex-direction: column; } } /* -- footer ----------------------------------------------------------------------- */ .site-footer { border-top: 1px solid var(--border); margin-top: var(--space-7); background: var(--bg-raised); } .footer-inner { max-width: var(--wrap); margin: 0 auto; padding: var(--space-6) var(--space-4) var(--space-4); display: grid; grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr)); gap: var(--space-5); } .footer-heading { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--fg-muted); margin: 0 0 var(--space-2); } .footer-tagline { color: var(--fg-muted); margin: 0; } .footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-1); } .footer-col a { color: var(--fg); text-decoration: none; } .footer-col a:hover { color: var(--accent); text-decoration: underline; } .footer-note { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--space-4) var(--space-5); color: var(--fg-muted); font-size: 0.85rem; } /* -- small screens ------------------------------------------------------------------ */ /* Phones. The header wraps to three rows down here — brand, five nav items, GitHub + toggle — and sticky chrome that tall eats a quarter of the screen for the whole scroll. So on narrow screens it scrolls away with the page, and the nav becomes a single swipeable row instead of a stack. No JS, no disclosure widget: one row that scrolls is a control every phone user already knows. */ @media (max-width: 48rem) { .site-header { position: static; } .header-inner { gap: var(--space-3); padding: var(--space-3) var(--space-4); row-gap: var(--space-2); } .site-nav { order: 3; flex-basis: 100%; overflow-x: auto; /* the scrollbar must not add height to a row this tight */ scrollbar-width: none; -ms-overflow-style: none; overscroll-behavior-x: contain; } .site-nav::-webkit-scrollbar { display: none; } .site-nav ul { flex-wrap: nowrap; gap: var(--space-4); padding-bottom: 0.15rem; } .site-nav a { white-space: nowrap; } .brand { margin-right: auto; } } @media (max-width: 30rem) { .hero { padding: var(--space-6) var(--space-4) var(--space-5); } .hero-actions .btn { width: 100%; } .hero-search-row { flex-direction: column; } .hero-search-row button { width: 100%; } }