/* ---------- HELIX site styles ---------- * Design goals: * - WCAG AA contrast in both light and dark modes (>= 4.5:1 body, >= 3:1 large) * - System font stack, zero CDN deps * - Honor prefers-color-scheme; user override via data-theme on * - Honor prefers-reduced-motion * - Visible focus rings, keyboard navigable */ :root { --bg: #ffffff; --bg-elev: #f7f7f9; --bg-code: #f2f3f5; --fg: #1a1d22; --fg-muted: #525866; --fg-faint: #8c92a0; --accent: #1a56db; /* contrast 7.3:1 on white */ --accent-fg: #ffffff; --border: #d8dbe1; --border-strong: #b6bcc7; --ok-bg: #d6f5e0; --ok-fg: #0a4f23; /* contrast > 7:1 on ok-bg */ --warn-bg: #fff1d6; --warn-fg: #6b4400; /* contrast > 7:1 on warn-bg */ --info-bg: #dde9ff; --info-fg: #143580; /* contrast > 7:1 on info-bg */ --focus: #1a56db; --shadow: 0 1px 2px rgba(0,0,0,.04), 0 4px 16px rgba(0,0,0,.06); --radius: 10px; --radius-sm: 6px; } @media (prefers-color-scheme: dark) { :root { --bg: #0e1116; --bg-elev: #161a22; --bg-code: #11141b; --fg: #e6e9ef; --fg-muted: #aab1be; --fg-faint: #7a818f; --accent: #76a9ff; /* contrast 7.4:1 on bg */ --accent-fg: #0e1116; --border: #262b35; --border-strong: #3a414e; --ok-bg: #0f3a1e; --ok-fg: #b8efc8; --warn-bg: #3a2a0a; --warn-fg: #ffd591; --info-bg: #14264f; --info-fg: #c6daff; --focus: #76a9ff; --shadow: 0 1px 2px rgba(0,0,0,.4), 0 4px 16px rgba(0,0,0,.25); } } /* Theme override (user-toggled). */ html[data-theme="light"] { color-scheme: light; --bg: #ffffff; --bg-elev: #f7f7f9; --bg-code: #f2f3f5; --fg: #1a1d22; --fg-muted: #525866; --fg-faint: #8c92a0; --accent: #1a56db; --accent-fg: #ffffff; --border: #d8dbe1; --border-strong: #b6bcc7; --ok-bg: #d6f5e0; --ok-fg: #0a4f23; --warn-bg: #fff1d6; --warn-fg: #6b4400; --info-bg: #dde9ff; --info-fg: #143580; --focus: #1a56db; --shadow: 0 1px 2px rgba(0,0,0,.04), 0 4px 16px rgba(0,0,0,.06); } html[data-theme="dark"] { color-scheme: dark; --bg: #0e1116; --bg-elev: #161a22; --bg-code: #11141b; --fg: #e6e9ef; --fg-muted: #aab1be; --fg-faint: #7a818f; --accent: #76a9ff; --accent-fg: #0e1116; --border: #262b35; --border-strong: #3a414e; --ok-bg: #0f3a1e; --ok-fg: #b8efc8; --warn-bg: #3a2a0a; --warn-fg: #ffd591; --info-bg: #14264f; --info-fg: #c6daff; --focus: #76a9ff; --shadow: 0 1px 2px rgba(0,0,0,.4), 0 4px 16px rgba(0,0,0,.25); } /* ----------- Base ----------- */ *, *::before, *::after { box-sizing: border-box; } html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; } @media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { animation: none !important; transition: none !important; } } body { margin: 0; background: var(--bg); color: var(--fg); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Liberation Sans", sans-serif; font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased; } p, ul, ol, dl { margin: 0 0 1em 0; } ul, ol { padding-left: 1.4em; } a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; text-decoration-thickness: 1px; } a:hover { text-decoration-thickness: 2px; } :focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 4px; } code, pre, kbd, samp { font-family: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace; font-size: 0.93em; } code { background: var(--bg-code); padding: 0.1em 0.35em; border-radius: var(--radius-sm); border: 1px solid var(--border); } pre.code { background: var(--bg-code); border: 1px solid var(--border); border-radius: var(--radius); padding: 1em 1.2em; overflow-x: auto; margin: 0 0 1.5em 0; } pre.code code { background: transparent; border: none; padding: 0; } h1, h2, h3, h4 { color: var(--fg); font-weight: 700; line-height: 1.25; margin: 0 0 0.5em 0; } h1 { font-size: clamp(2rem, 4vw + 1rem, 3.25rem); letter-spacing: -0.02em; } h2 { font-size: clamp(1.5rem, 1.5vw + 1rem, 2rem); margin-top: 1em; } h3 { font-size: 1.2rem; } .container { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 1.5rem; } /* ---------- Skip link ---------- */ .skip-link { position: absolute; left: 0; top: -40px; background: var(--accent); color: var(--accent-fg); padding: 8px 14px; border-radius: 0 0 var(--radius-sm) 0; z-index: 100; text-decoration: none; } .skip-link:focus { top: 0; } /* ---------- Header ---------- */ .site-header { border-bottom: 1px solid var(--border); background: var(--bg); position: sticky; top: 0; z-index: 10; backdrop-filter: saturate(180%) blur(8px); } .header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 64px; } .brand { display: inline-flex; align-items: center; gap: 0.55rem; color: var(--fg); text-decoration: none; font-weight: 700; letter-spacing: 0.04em; } .brand:hover { text-decoration: none; } .brand-text { font-size: 1.05rem; } .brand-mark { color: var(--accent); } .site-nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 1.25rem; flex-wrap: wrap; } .site-nav a { color: var(--fg-muted); text-decoration: none; padding: 0.35rem 0.1rem; border-bottom: 2px solid transparent; } .site-nav a:hover { color: var(--fg); border-bottom-color: var(--accent); } @media (max-width: 720px) { .site-nav { display: none; } } /* Header actions cluster (GitHub link + theme toggle) */ .header-actions { display: inline-flex; align-items: center; gap: 0.5rem; } .github-link { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: 50%; color: var(--fg); background: var(--bg-elev); border: 1px solid var(--border); text-decoration: none; } .github-link:hover { border-color: var(--border-strong); color: var(--accent); } /* Theme toggle */ .theme-toggle { background: var(--bg-elev); color: var(--fg); border: 1px solid var(--border); border-radius: 50%; width: 38px; height: 38px; display: inline-flex; align-items: center; justify-content: center; cursor: pointer; font: inherit; } .theme-toggle:hover { border-color: var(--border-strong); } .theme-toggle-icon { width: 18px; height: 18px; border-radius: 50%; background: radial-gradient(circle at 30% 30%, var(--fg) 40%, transparent 41%), var(--bg-elev); box-shadow: inset 0 0 0 1px var(--fg-muted); } .visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; } /* ---------- Hero ---------- */ .hero { padding: 3.5rem 0 2.5rem 0; } .eyebrow { margin: 0 0 0.5em 0; color: var(--fg-muted); font-size: 0.85rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; } .lede { font-size: 1.15rem; color: var(--fg-muted); max-width: 62ch; margin: 0 0 1.5em 0; } .accent { color: var(--accent); } .hero-badges { list-style: none; margin: 0 0 1.75em 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.5rem; } .badge { display: inline-block; padding: 0.35em 0.7em; border-radius: 999px; font-size: 0.85rem; font-weight: 600; border: 1px solid transparent; } .badge-pass { background: var(--ok-bg); color: var(--ok-fg); border-color: var(--ok-fg); } .badge-warn { background: var(--warn-bg); color: var(--warn-fg); border-color: var(--warn-fg); } .badge-info { background: var(--info-bg); color: var(--info-fg); border-color: var(--info-fg); } .hero-actions { display: flex; gap: 0.7rem; flex-wrap: wrap; } .btn { display: inline-block; padding: 0.65em 1.15em; border-radius: var(--radius-sm); background: var(--bg-elev); color: var(--fg); border: 1px solid var(--border-strong); text-decoration: none; font-weight: 600; } .btn:hover { border-color: var(--accent); color: var(--accent); } .btn-primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); } .btn-primary:hover { color: var(--accent-fg); filter: brightness(1.05); } /* ---------- Sections ---------- */ section { margin: 2.5rem 0 3rem 0; } section + section { border-top: 1px solid var(--border); padding-top: 2.5rem; } /* ---------- Card list ---------- */ .card-list { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem; } .card { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1em 1.2em; } .card h3 { margin-top: 0; color: var(--accent); } /* ---------- Diagram ---------- */ .diagram-wrap { margin: 1.5em 0; padding: 1em; background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); } .diagram { width: 100%; height: auto; color: var(--fg); } .d-node rect { fill: var(--bg); stroke: var(--border-strong); stroke-width: 1.5; } .d-node text { fill: var(--fg); font-size: 14px; font-weight: 600; } .d-node .d-meta { fill: var(--fg-muted); font-size: 11px; font-weight: 400; } .d-node .d-meta-out { fill: var(--accent); font-size: 11px; font-style: italic; } .d-l2 rect { fill: var(--info-bg); stroke: var(--info-fg); } .d-l2 text { fill: var(--info-fg); } .d-l2 .d-meta { fill: var(--info-fg); } .d-edge { color: var(--fg-muted); } .d-edge-label text { fill: var(--fg-muted); font-size: 11px; } .d-edge-label-small { font-size: 10px !important; } figcaption { text-align: center; color: var(--fg-muted); font-size: 0.9rem; margin-top: 0.6em; } /* ---------- Results grid ---------- */ .results-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; } .result-card { background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.2em 1.3em; } .result-card h3 { margin-top: 0; } .kv { display: grid; grid-template-columns: max-content 1fr; gap: 0.4em 1em; margin: 0.5em 0 0.8em 0; } .kv dt { color: var(--fg-muted); font-weight: 400; } .kv dd { margin: 0; font-variant-numeric: tabular-nums; font-weight: 600; } .result-source { color: var(--fg-faint); font-size: 0.85em; margin: 0; } /* ---------- Status table ---------- */ .table-wrap { border: 1px solid var(--border); border-radius: var(--radius); overflow-x: auto; } .status-table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; } .status-table th, .status-table td { padding: 0.7em 1em; text-align: left; border-bottom: 1px solid var(--border); } .status-table thead th { background: var(--bg-elev); font-weight: 700; color: var(--fg-muted); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; } .status-table tbody th { color: var(--fg-muted); font-weight: 600; } .status-table tbody tr:last-child td, .status-table tbody tr:last-child th { border-bottom: none; } .pill { display: inline-block; padding: 0.2em 0.6em; border-radius: 999px; font-size: 0.82rem; font-weight: 600; } .pill-ok { background: var(--ok-bg); color: var(--ok-fg); } .pill-warn { background: var(--warn-bg); color: var(--warn-fg); } /* ---------- Footer ---------- */ .site-footer { margin-top: 3.5rem; padding: 2rem 0; border-top: 1px solid var(--border); background: var(--bg-elev); color: var(--fg-muted); } .footer-inner p { margin: 0 0 0.4em 0; font-size: 0.95rem; } .footer-meta { color: var(--fg-faint); font-size: 0.85rem; } /* ---------- 404 ---------- */ .error-page { min-height: 70vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 3rem 1rem; } .error-code { font-size: clamp(4rem, 12vw, 8rem); margin: 0; color: var(--accent); letter-spacing: -0.04em; }