/* Conduit docs site. Same brand tokens and contrast rules as the app
 * (see docs/brand.md): only --brand-1 is used as text on white; --brand-4
 * and --brand-5 only ever carry ink. */
:root {
  --brand-1: #ec0000; --brand-2: #ec2400; --brand-3: #ec5300; --brand-4: #ec9b00; --brand-5: #ecca00;
  --brand-gradient: linear-gradient(90deg, #ec0000, #ec2400 25%, #ec5300 50%, #ec9b00 75%, #ecca00);
  --white: #ffffff; --ink: #1c1917; --ink-2: #57534e; --line: #e7e5e4; --surface: #fafaf9;
  --tint-amber: #fffbeb; --tint-red: #fef2f2; --error-text: #b80000;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --radius: 8px;
  --shadow: 0 1px 2px rgba(28,25,23,.06), 0 1px 3px rgba(28,25,23,.04);
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--white); color: var(--ink); font: 16px/1.65 var(--font); -webkit-font-smoothing: antialiased; }
a { color: var(--brand-1); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--brand-1); outline-offset: 2px; }
img { max-width: 100%; }

/* ── Header ── */
.site-header {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 1.5rem;
  height: 60px; padding: 0 clamp(1rem, 3vw, 2rem);
  background: var(--ink); color: var(--white);
}
.site-header::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 3px; background: var(--brand-gradient); }
.brand { display: flex; align-items: center; gap: .55rem; color: var(--white); font-weight: 700; font-size: 18px; letter-spacing: -.01em; margin-right: auto; }
.brand:hover { text-decoration: none; }
.brand-sub { color: #d6d3d1; font-weight: 500; padding-left: .55rem; border-left: 1px solid rgba(255,255,255,.25); }
.header-links { display: flex; gap: .25rem; }
.header-links a { color: #e7e5e4; font-size: 14px; font-weight: 500; padding: .35rem .75rem; border-radius: 6px; }
.header-links a:hover { color: var(--white); background: rgba(255,255,255,.1); text-decoration: none; }

/* ── Doc layout ── */
.doc-shell { display: grid; grid-template-columns: 240px minmax(0, 1fr); max-width: 1240px; margin: 0 auto; }
.sidebar { position: sticky; top: 60px; align-self: start; height: calc(100vh - 60px); overflow-y: auto; padding: 2rem 1rem 2rem clamp(1rem, 3vw, 2rem); border-right: 1px solid var(--line); }
.sidebar ul { list-style: none; margin: 0; padding: 0; }
.sidebar a { display: block; padding: .38rem .7rem; border-radius: 6px; color: var(--ink-2); font-size: 14.5px; font-weight: 500; }
.sidebar a:hover { background: var(--surface); color: var(--ink); text-decoration: none; }
.sidebar a[aria-current="page"] { color: var(--ink); background: var(--tint-amber); box-shadow: inset 3px 0 0 var(--brand-4); }
.doc-main { padding: 2.25rem clamp(1rem, 4vw, 3.5rem) 4rem; min-width: 0; }
.edit-link { max-width: 780px; margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--line); font-size: 14px; }

/* ── Prose ── */
.prose { max-width: 780px; }
.prose h1 { font-size: 2.1rem; line-height: 1.2; letter-spacing: -.02em; margin: 0 0 1.25rem; }
.prose h2 { font-size: 1.45rem; letter-spacing: -.01em; margin: 2.5rem 0 .75rem; padding-top: .5rem; border-top: 1px solid var(--line); }
.prose h3 { font-size: 1.15rem; margin: 1.75rem 0 .5rem; }
.prose p, .prose ul, .prose ol { margin: 0 0 1rem; }
.prose li { margin: .25rem 0; }
.prose strong { font-weight: 650; }
.prose code { font-family: var(--mono); font-size: .88em; background: var(--surface); border: 1px solid var(--line); border-radius: 4px; padding: .1em .35em; }
.prose pre { background: #1c1917; color: #f5f5f4; border-radius: var(--radius); padding: 1rem 1.15rem; overflow-x: auto; font-size: 13.5px; line-height: 1.55; }
.prose pre code { background: none; border: 0; padding: 0; color: inherit; font-size: inherit; }
.prose blockquote { margin: 0 0 1rem; padding: .6rem 1rem; background: var(--tint-amber); border-left: 4px solid var(--brand-4); border-radius: 0 var(--radius) var(--radius) 0; }
.prose table { display: block; overflow-x: auto; width: 100%; border-collapse: collapse; margin: 0 0 1.25rem; font-size: 14.5px; }
.prose th, .prose td { border: 1px solid var(--line); padding: .5rem .75rem; text-align: left; vertical-align: top; }
.prose th { background: var(--surface); font-weight: 600; }
.prose img { vertical-align: middle; }
.mermaid { margin: 1.25rem 0; padding: 1rem; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); text-align: center; overflow-x: auto; }

/* Rouge syntax highlighting on the dark code background. */
.highlight .c, .highlight .c1, .highlight .cm { color: #a8a29e; font-style: italic; }
.highlight .k, .highlight .kd, .highlight .kn, .highlight .kt { color: #fb923c; }
.highlight .s, .highlight .s1, .highlight .s2, .highlight .sb { color: #fde047; }
.highlight .nf, .highlight .nx { color: #fdba74; }
.highlight .mi, .highlight .mf { color: #fca5a5; }
.highlight .nb, .highlight .nv { color: #fed7aa; }

/* ── Home ── */
.home-main { display: block; }
.hero { position: relative; padding: clamp(3rem, 8vw, 6rem) clamp(1rem, 4vw, 2rem) clamp(2.5rem, 6vw, 4.5rem); text-align: center; background: radial-gradient(1200px 400px at 50% -10%, var(--tint-amber), var(--white) 70%); border-bottom: 1px solid var(--line); }
.hero img { width: 104px; height: 104px; }
.hero h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); line-height: 1.1; letter-spacing: -.03em; margin: 1.25rem 0 .75rem; }
.hero p.lead { max-width: 640px; margin: 0 auto 2rem; font-size: 1.2rem; color: var(--ink-2); }
.cta { display: flex; gap: .75rem; justify-content: center; flex-wrap: wrap; }
.button { display: inline-block; padding: .7rem 1.3rem; border-radius: var(--radius); font-weight: 600; font-size: 15px; }
.button.primary { background: var(--brand-1); color: var(--white); }
.button.primary:hover { background: #c80000; text-decoration: none; }
.button.secondary { background: var(--white); color: var(--ink); border: 1px solid #d6d3d1; }
.button.secondary:hover { border-color: var(--ink); text-decoration: none; }
.section { max-width: 1120px; margin: 0 auto; padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1rem, 4vw, 2rem); }
.section h2 { text-align: center; font-size: 1.8rem; letter-spacing: -.02em; margin: 0 0 .5rem; }
.section > p.sub { text-align: center; color: var(--ink-2); margin: 0 auto 2.5rem; max-width: 620px; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.25rem; }
.feature { position: relative; padding: 1.4rem 1.4rem 1.25rem; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.feature::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: var(--accent, var(--brand-1)); }
.feature:nth-child(5n+2) { --accent: var(--brand-2); }
.feature:nth-child(5n+3) { --accent: var(--brand-3); }
.feature:nth-child(5n+4) { --accent: var(--brand-4); }
.feature:nth-child(5n+5) { --accent: var(--brand-5); }
.feature h3 { margin: 0 0 .35rem; font-size: 1.05rem; }
.feature p { margin: 0; color: var(--ink-2); font-size: 15px; }
.band { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.doc-links { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
.doc-links a { display: block; padding: 1rem 1.15rem; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); color: var(--ink); }
.doc-links a:hover { border-color: var(--brand-1); text-decoration: none; }
.doc-links strong { display: block; color: var(--brand-1); margin-bottom: .15rem; }
.doc-links span { color: var(--ink-2); font-size: 14.5px; }

/* ── Footer ── */
.site-footer { display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; padding: 1.5rem clamp(1rem, 3vw, 2rem); border-top: 1px solid var(--line); color: var(--ink-2); font-size: 14px; }
.site-footer a { margin-left: auto; }

/* ── Small screens ── */
@media (max-width: 860px) {
  .doc-shell { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; border-right: 0; border-bottom: 1px solid var(--line); padding: 1rem; }
  .sidebar ul { display: flex; flex-wrap: wrap; gap: .25rem; }
  .header-links a:not(.gh) { display: none; }
}

/* ── Visual roadmap ──
 * Stage colors run along the palette: Now = #ec0000, Next = #ec5300,
 * Later = #ec9b00, Shipped = #ecca00. Pills on #ec5300/#ec9b00/#ecca00 carry
 * ink (4.8/7.7/10.8:1); only the #ec0000 pill carries white (4.6:1). */
.roadmap-page .prose { max-width: 1120px; }
.rm-header h1 { font-size: 2.4rem; letter-spacing: -.025em; margin: 0 0 .75rem; }
.rm-lead { font-size: 1.12rem; color: var(--ink); max-width: 760px; margin: 0 0 .5rem; }
.rm-note { color: var(--ink-2); font-size: 14.5px; margin: 0 0 2rem; }
.rm-now     { --stage: #ec0000; --stage-ink: #ffffff; --stage-tint: #fef2f2; }
.rm-next    { --stage: #ec5300; --stage-ink: #1c1917; --stage-tint: #fff7ed; }
.rm-later   { --stage: #ec9b00; --stage-ink: #1c1917; --stage-tint: #fffbeb; }
.rm-shipped, .rm-shipped-panel { --stage: #ecca00; --stage-ink: #1c1917; --stage-tint: #fefce8; }
.rm-decisions { --stage: #1c1917; --stage-ink: #ffffff; --stage-tint: var(--surface); }

/* Timeline: four milestones on a gradient rail. */
.rm-timeline { position: relative; list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; margin: 0 0 2.5rem; padding: 0; }
.rm-timeline::before { content: ""; position: absolute; left: 1.1rem; right: 1.1rem; top: 1.05rem; height: 4px; border-radius: 2px; background: linear-gradient(90deg, #ecca00, #ec0000 34%, #ec5300 67%, #ec9b00); }
.rm-milestone a { position: relative; display: flex; flex-direction: column; gap: .15rem; color: var(--ink); padding-top: 2.6rem; }
.rm-milestone a:hover { text-decoration: none; }
.rm-milestone a:hover strong { color: var(--brand-1); }
.rm-dot { position: absolute; top: 0; left: 0; width: 2.25rem; height: 2.25rem; border-radius: 50%; background: var(--white); border: 4px solid var(--stage); display: grid; place-items: center; font-weight: 800; color: var(--stage-ink); }
.rm-shipped .rm-dot { background: var(--stage); }
.rm-now .rm-dot { background: var(--stage); box-shadow: 0 0 0 5px rgba(236,0,0,.15); }
.rm-milestone strong { font-size: 1.05rem; }
.rm-milestone span:last-child { color: var(--ink-2); font-size: 14px; }

/* Lanes */
.rm-lanes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.25rem; margin-bottom: 2.5rem; }
.rm-lane { background: var(--stage-tint); border: 1px solid var(--line); border-top: 4px solid var(--stage); border-radius: var(--radius); padding: 1rem; }
.rm-lane > header, .rm-shipped-panel > header, .rm-decisions > header { display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; margin-bottom: .9rem; }
.prose .rm-lane h2, .prose .rm-shipped-panel h2, .prose .rm-decisions h2 { margin: 0; padding: 0; border: 0; font-size: 1.05rem; letter-spacing: 0; }
.rm-pill { display: inline-block; padding: .15rem .65rem; border-radius: 999px; background: var(--stage); color: var(--stage-ink); font-size: 12px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; }
.rm-card { background: var(--white); border: 1px solid var(--line); border-radius: 6px; padding: .8rem .9rem; margin-bottom: .7rem; box-shadow: var(--shadow); }
.rm-card:last-child { margin-bottom: 0; }
.prose .rm-card h3 { margin: .2rem 0 .3rem; font-size: 1rem; }
.prose .rm-card p { margin: 0; font-size: 14.5px; color: var(--ink-2); }
.rm-area { display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; color: var(--ink-2); border: 1px solid var(--line); border-radius: 4px; padding: 0 .4rem; }

/* Shipped */
.rm-shipped-panel { border: 1px solid var(--line); border-top: 4px solid var(--stage); border-radius: var(--radius); padding: 1rem 1.25rem 1.25rem; margin-bottom: 2.5rem; }
.rm-shipped-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem 1.5rem; }
.prose .rm-shipped-group h3 { font-size: .95rem; margin: .25rem 0 .4rem; }
.prose .rm-shipped-group ul { list-style: none; padding: 0; margin: 0; }
.prose .rm-shipped-group li { position: relative; padding-left: 1.5rem; font-size: 14.5px; margin: .35rem 0; }
.rm-shipped-group li::before { content: "✓"; position: absolute; left: 0; top: .05rem; width: 1.05rem; height: 1.05rem; border-radius: 50%; background: #ecca00; color: var(--ink); font-size: 11px; font-weight: 800; display: grid; place-items: center; }

/* Decisions */
.rm-decisions { border: 1px solid var(--line); border-top: 4px solid var(--stage); border-radius: var(--radius); padding: 1rem 1.25rem 1.25rem; }
.rm-decision-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; }
.rm-decision { background: var(--surface); border: 1px dashed #d6d3d1; border-radius: 6px; padding: .9rem 1rem; }
.prose .rm-decision h3 { margin: 0 0 .5rem; font-size: 1rem; }
.prose .rm-options { list-style: none; padding: 0; margin: 0 0 .5rem; display: flex; flex-direction: column; gap: .35rem; }
.prose .rm-options li { margin: 0; padding: .35rem .6rem; background: var(--white); border: 1px solid var(--line); border-radius: 6px; font-size: 14px; }
.prose .rm-lean { margin: 0 0 .4rem; font-size: 14px; font-style: italic; color: var(--ink-2); }
.prose .rm-raised { margin: 0; font-size: 13px; color: var(--ink-2); }

@media (max-width: 860px) {
  .rm-lanes { grid-template-columns: 1fr; }
  .rm-timeline { grid-template-columns: repeat(2, 1fr); row-gap: 1.5rem; }
  .rm-timeline::before { display: none; }
}

.nav-section { margin: 1.25rem 0 .35rem .7rem; font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-2); }
.nav-section:first-child { margin-top: 0; }