/*
 * param ai/studio documentation — stylesheet.
 *
 * The palette is lifted verbatim from the product's own design tokens
 * (apps/web/src/styles/themes.css) so the documentation and the application it
 * documents are visibly the same piece of software. When the product's tokens
 * change, re-copy the two token blocks below and nothing else needs to move.
 */

/* ═══ Tokens — light ══════════════════════════════════════════════ */
:root {
  color-scheme: light;
  --color-bg: #FAFAFA;
  --color-bg-subtle: #F3F3F3;
  --color-surface: #FFFFFF;
  --color-surface-hover: #F5F5F5;
  --color-surface-active: #EBEBEB;
  --color-ink: #1A1A1A;
  --color-mid: #6B6B6B;
  --color-light: #9B9B9B;
  --color-faint: #CCCCCC;
  --color-line: #E5E5E5;
  --color-line-subtle: #F0F0F0;
  --color-line-strong: #D4D4D4;
  --color-grid-dot: #D4D4D4;
  --color-accent: #292929;
  --color-accent-hover: #1A1A1A;
  --color-accent-soft: #F0F0F0;
  --color-on-accent: #FFFFFF;
  --color-success: #16a34a;  --color-success-soft: #f0fdf4;
  --color-warning: #ca8a04;  --color-warning-soft: #fefce8;
  --color-error:   #dc2626;  --color-error-soft:   #fef2f2;
  --color-info:    #0D3B66;  --color-info-soft:    #E6EEF6;
  --color-op-llm:  #7c3aed;  --color-op-llm-soft:  #f5f3ff;
  --color-op-data: #0891b2;  --color-op-data-soft: #ecfeff;
  --color-op-code: #ea580c;  --color-op-code-soft: #fff7ed;
  --color-op-flow: #525252;  --color-op-flow-soft: #f5f5f5;
  --color-op-io:   #059669;  --color-op-io-soft:   #ecfdf5;
  --color-op-skill:#7C5CFA;  --color-op-skill-soft:#f0ecff;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.03);
  --shadow-md: 0 4px 6px rgba(0,0,0,.05), 0 2px 4px rgba(0,0,0,.04);
  --shadow-lg: 0 10px 15px rgba(0,0,0,.08), 0 4px 6px rgba(0,0,0,.04);
  --shadow-xl: 0 24px 48px rgba(0,0,0,.14), 0 8px 16px rgba(0,0,0,.06);
  --shot-frame: #E5E5E5;
  --pin-bg: #292929; --pin-fg: #FFFFFF; --pin-ring: rgba(41,41,41,.18);
  --hl-stroke: #292929; --hl-wash: rgba(41,41,41,.06);
}

/* ═══ Tokens — dark ═══════════════════════════════════════════════ */
[data-theme="dark"] {
  color-scheme: dark;
  --color-bg: #0a0a0a;
  --color-bg-subtle: #111111;
  --color-surface: #141414;
  --color-surface-hover: #1a1a1a;
  --color-surface-active: #222222;
  --color-ink: #f0f0f0;
  --color-mid: #a0a0a0;
  --color-light: #707070;
  --color-faint: #444444;
  --color-line: #2a2a2a;
  --color-line-subtle: #1e1e1e;
  --color-line-strong: #3a3a3a;
  --color-grid-dot: #333333;
  --color-accent: #D4D4D4;
  --color-accent-hover: #E5E5E5;
  --color-accent-soft: #1E1E1E;
  --color-on-accent: #0a0a0a;
  --color-success: #22c55e;  --color-success-soft: #0A1F13;
  --color-warning: #eab308;  --color-warning-soft: #1A1506;
  --color-error:   #ef4444;  --color-error-soft:   #1F0A0A;
  --color-info:    #7B9FBF;  --color-info-soft:    #111A24;
  --color-op-llm:  #a78bfa;  --color-op-llm-soft:  #18122A;
  --color-op-data: #22d3ee;  --color-op-data-soft: #0A1E24;
  --color-op-code: #fb923c;  --color-op-code-soft: #1F1008;
  --color-op-flow: #a0a0a0;  --color-op-flow-soft: #1a1a1a;
  --color-op-io:   #34d399;  --color-op-io-soft:   #0A1F18;
  --color-op-skill:#9d86fa;  --color-op-skill-soft:#1a1228;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.3), 0 1px 2px rgba(0,0,0,.2);
  --shadow-md: 0 4px 6px rgba(0,0,0,.3), 0 2px 4px rgba(0,0,0,.2);
  --shadow-lg: 0 10px 15px rgba(0,0,0,.3), 0 4px 6px rgba(0,0,0,.2);
  --shadow-xl: 0 24px 48px rgba(0,0,0,.5), 0 8px 16px rgba(0,0,0,.3);
  --shot-frame: #2a2a2a;
  --pin-bg: #D4D4D4; --pin-fg: #0a0a0a; --pin-ring: rgba(212,212,212,.2);
  --hl-stroke: #D4D4D4; --hl-wash: rgba(212,212,212,.07);
}

/* ═══ Metrics ═════════════════════════════════════════════════════ */
:root {
  --font-sans: "Oxygen", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --rail: 17.5rem;
  --toc: 15rem;
  --topbar: 3.25rem;
  --measure: 46rem;
  --r-sm: 6px; --r-md: 8px; --r-lg: 12px;
}

/* ═══ Reset ═══════════════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--topbar) + 1.5rem); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { animation-duration: .01ms !important; transition-duration: .01ms !important; } }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; border-radius: 3px; }

/* ═══ Top bar ═════════════════════════════════════════════════════ */
.topbar {
  position: fixed; inset: 0 0 auto 0; height: var(--topbar); z-index: 60;
  display: flex; align-items: center; gap: .75rem; padding: 0 1rem;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--color-line);
}
.brand { display: flex; align-items: center; gap: .6rem; text-decoration: none; flex-shrink: 0; }
.brand-mark {
  width: 26px; height: 26px; border-radius: var(--r-sm);
  background: var(--color-ink); color: var(--color-bg);
  display: grid; place-items: center;
  font-family: var(--font-mono); font-weight: 700; font-size: 12px; letter-spacing: -.04em;
}
[data-theme="dark"] .brand-mark { background: var(--color-ink); color: #0a0a0a; }
.brand-text { font-size: 13.5px; font-weight: 700; letter-spacing: -.01em; white-space: nowrap; }
.brand-text .dim { color: var(--color-light); font-weight: 400; }
.brand-sub { font-size: 11px; color: var(--color-light); border-left: 1px solid var(--color-line); padding-left: .75rem; margin-left: .2rem; white-space: nowrap; }

.setswitch { display: flex; gap: 2px; padding: 3px; background: var(--color-bg-subtle); border: 1px solid var(--color-line); border-radius: var(--r-md); margin-left: .5rem; }
.setswitch a {
  font-size: 12px; padding: .3rem .7rem; border-radius: var(--r-sm); text-decoration: none;
  color: var(--color-mid); white-space: nowrap; transition: background .12s, color .12s;
}
.setswitch a:hover { color: var(--color-ink); background: var(--color-surface-hover); }
.setswitch a[aria-current="true"] { background: var(--color-surface); color: var(--color-ink); font-weight: 600; box-shadow: var(--shadow-sm); }

.topbar-spacer { flex: 1; }
.searchbtn {
  display: flex; align-items: center; gap: .5rem; min-width: 15rem;
  padding: .4rem .6rem; font: inherit; font-size: 12.5px; color: var(--color-light);
  background: var(--color-surface); border: 1px solid var(--color-line); border-radius: var(--r-md);
  cursor: pointer; transition: border-color .12s;
}
.searchbtn:hover { border-color: var(--color-line-strong); }
.searchbtn svg { width: 15px; height: 15px; flex-shrink: 0; }
.searchbtn .grow { flex: 1; text-align: left; }
.iconbtn {
  width: 30px; height: 30px; display: grid; place-items: center; cursor: pointer;
  background: transparent; border: 1px solid transparent; border-radius: var(--r-md);
  color: var(--color-mid); transition: background .12s, color .12s;
}
.iconbtn:hover { background: var(--color-surface-hover); color: var(--color-ink); }
.iconbtn svg { width: 16px; height: 16px; }

kbd {
  font-family: var(--font-mono); font-size: 10.5px; line-height: 1;
  padding: .28em .45em; min-width: 1.5em; display: inline-flex; justify-content: center;
  background: var(--color-bg-subtle); color: var(--color-mid);
  border: 1px solid var(--color-line); border-bottom-width: 2px; border-radius: 4px;
  white-space: nowrap; vertical-align: middle;
}

/* ═══ Shell ═══════════════════════════════════════════════════════ */
.shell { display: grid; grid-template-columns: var(--rail) minmax(0,1fr) var(--toc); gap: 0; padding-top: var(--topbar); }
body.rail-hidden .shell { grid-template-columns: 0 minmax(0,1fr) var(--toc); }
body.rail-hidden .rail { transform: translateX(-100%); visibility: hidden; }

.rail {
  position: sticky; top: var(--topbar); height: calc(100vh - var(--topbar));
  overflow-y: auto; overscroll-behavior: contain;
  border-right: 1px solid var(--color-line); padding: 1.25rem .85rem 4rem;
  transition: transform .18s ease;
}
.rail::-webkit-scrollbar, .toc::-webkit-scrollbar, .palette-results::-webkit-scrollbar { width: 8px; }
.rail::-webkit-scrollbar-thumb, .toc::-webkit-scrollbar-thumb, .palette-results::-webkit-scrollbar-thumb { background: var(--color-line-strong); border-radius: 4px; }
.rail::-webkit-scrollbar-track, .toc::-webkit-scrollbar-track { background: transparent; }

.rail-set { font-size: 10.5px; text-transform: uppercase; letter-spacing: .09em; color: var(--color-light); font-weight: 700; padding: 0 .55rem .6rem; }
.rail section { margin-bottom: 1.35rem; }
.rail h3 {
  margin: 0 0 .3rem; padding: 0 .55rem;
  font-size: 11px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase;
  color: var(--color-mid);
}
.rail ul { list-style: none; margin: 0; padding: 0; }
.rail a {
  display: block; padding: .32rem .55rem; border-radius: var(--r-sm);
  font-size: 13px; color: var(--color-mid); text-decoration: none; line-height: 1.4;
  border-left: 2px solid transparent; transition: background .1s, color .1s;
}
.rail a:hover { background: var(--color-surface-hover); color: var(--color-ink); }
.rail a[aria-current="page"] {
  background: var(--color-accent-soft); color: var(--color-ink); font-weight: 600;
  border-left-color: var(--color-ink);
}

/* ═══ Content ═════════════════════════════════════════════════════ */
main { min-width: 0; padding: 2.25rem 3rem 7rem; }
article { max-width: var(--measure); }

.crumb { font-size: 12px; color: var(--color-light); margin-bottom: .5rem; display: flex; gap: .4rem; align-items: center; flex-wrap: wrap; }
.crumb .sep { color: var(--color-faint); }
.page-title { font-size: 2.15rem; line-height: 1.15; letter-spacing: -.025em; font-weight: 700; margin: 0 0 .5rem; }
.page-summary { font-size: 1.0625rem; color: var(--color-mid); margin: 0 0 1.25rem; line-height: 1.6; max-width: 42rem; }
.page-meta { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: 2rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--color-line); }
.tag {
  font-size: 11px; font-family: var(--font-mono); padding: .2rem .5rem; border-radius: 999px;
  background: var(--color-bg-subtle); color: var(--color-mid); border: 1px solid var(--color-line);
}
.tag.audience { background: var(--color-op-io-soft); color: var(--color-op-io); border-color: transparent; }
.tag.area { background: var(--color-op-llm-soft); color: var(--color-op-llm); border-color: transparent; }

article h2 {
  font-size: 1.4rem; letter-spacing: -.015em; font-weight: 700;
  margin: 3rem 0 .85rem; padding-top: .5rem; scroll-margin-top: calc(var(--topbar) + 1rem);
}
article h3 { font-size: 1.1rem; font-weight: 700; margin: 2rem 0 .6rem; scroll-margin-top: calc(var(--topbar) + 1rem); }
article h4 { font-size: .95rem; font-weight: 700; margin: 1.5rem 0 .5rem; color: var(--color-mid); scroll-margin-top: calc(var(--topbar) + 1rem); }
article h2:first-child, article h3:first-child { margin-top: 0; }
article p { margin: 0 0 1rem; }
article ul, article ol { margin: 0 0 1rem; padding-left: 1.35rem; }
article li { margin-bottom: .35rem; }
article li > ul, article li > ol { margin-top: .35rem; }
article a:not(.headerlink) { color: var(--color-ink); text-decoration: underline; text-decoration-color: var(--color-faint); text-underline-offset: 3px; }
article a:not(.headerlink):hover { text-decoration-color: var(--color-ink); }
article strong { font-weight: 700; }
article hr { border: 0; border-top: 1px solid var(--color-line); margin: 2.5rem 0; }
article blockquote {
  margin: 0 0 1rem; padding: .1rem 0 .1rem 1rem;
  border-left: 3px solid var(--color-line-strong); color: var(--color-mid);
}

.headerlink {
  opacity: 0; margin-left: .4rem; text-decoration: none; color: var(--color-faint);
  font-weight: 400; transition: opacity .12s;
}
h2:hover .headerlink, h3:hover .headerlink, h4:hover .headerlink { opacity: 1; }

/* Inline code and code blocks */
code {
  font-family: var(--font-mono); font-size: .855em;
  background: var(--color-bg-subtle); border: 1px solid var(--color-line-subtle);
  padding: .12em .38em; border-radius: 4px; word-break: break-word;
}
pre { margin: 0 0 1.25rem; }
pre code { background: none; border: 0; padding: 0; font-size: 12.5px; line-height: 1.65; }
.codeblock {
  position: relative; margin: 0 0 1.25rem;
  border: 1px solid var(--color-line); border-radius: var(--r-md);
  background: var(--color-surface); overflow: hidden;
}
.codeblock-head {
  display: flex; align-items: center; gap: .5rem; padding: .4rem .75rem;
  border-bottom: 1px solid var(--color-line); background: var(--color-bg-subtle);
  font-family: var(--font-mono); font-size: 11px; color: var(--color-mid);
}
.codeblock-head .lang { text-transform: uppercase; letter-spacing: .06em; }
.codeblock-head .file { color: var(--color-light); }
.codeblock-head .grow { flex: 1; }
.copybtn {
  font: inherit; font-size: 11px; padding: .15rem .5rem; cursor: pointer;
  background: var(--color-surface); color: var(--color-mid);
  border: 1px solid var(--color-line); border-radius: 4px;
}
.copybtn:hover { color: var(--color-ink); border-color: var(--color-line-strong); }
.copybtn.done { color: var(--color-success); border-color: var(--color-success); }
.codeblock pre { margin: 0; padding: .85rem 1rem; overflow-x: auto; }
.shiki, .shiki span { background: transparent !important; }
[data-theme="dark"] .shiki, [data-theme="dark"] .shiki span { color: var(--shiki-dark, inherit) !important; }

/* Tables */
.tablewrap { overflow-x: auto; margin: 0 0 1.25rem; border: 1px solid var(--color-line); border-radius: var(--r-md); }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
th, td { text-align: left; padding: .55rem .8rem; border-bottom: 1px solid var(--color-line-subtle); vertical-align: top; }
th { background: var(--color-bg-subtle); font-weight: 700; font-size: 11.5px; text-transform: uppercase; letter-spacing: .04em; color: var(--color-mid); white-space: nowrap; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: var(--color-surface-hover); }
td code { white-space: nowrap; }

/* Callouts */
.callout {
  margin: 0 0 1.25rem; padding: .85rem 1rem; border-radius: var(--r-md);
  border: 1px solid var(--color-line); border-left-width: 3px; background: var(--color-surface);
  font-size: 14px;
}
.callout > :last-child { margin-bottom: 0; }
.callout-title { font-weight: 700; font-size: 12px; text-transform: uppercase; letter-spacing: .05em; margin-bottom: .35rem; display: flex; align-items: center; gap: .4rem; }
.callout.note    { border-left-color: var(--color-info);    background: var(--color-info-soft); }
.callout.note .callout-title { color: var(--color-info); }
.callout.tip     { border-left-color: var(--color-success); background: var(--color-success-soft); }
.callout.tip .callout-title { color: var(--color-success); }
.callout.warning { border-left-color: var(--color-warning); background: var(--color-warning-soft); }
.callout.warning .callout-title { color: var(--color-warning); }
.callout.danger  { border-left-color: var(--color-error);   background: var(--color-error-soft); }
.callout.danger .callout-title { color: var(--color-error); }

/* Collapsible detail */
details {
  margin: 0 0 1.25rem; border: 1px solid var(--color-line); border-radius: var(--r-md);
  background: var(--color-surface); overflow: hidden;
}
details > summary {
  cursor: pointer; padding: .6rem .9rem; font-weight: 600; font-size: 13.5px;
  background: var(--color-bg-subtle); list-style: none; display: flex; align-items: center; gap: .5rem;
}
details > summary::-webkit-details-marker { display: none; }
details > summary::before { content: "▸"; color: var(--color-light); transition: transform .15s; }
details[open] > summary::before { transform: rotate(90deg); }
details > :not(summary) { padding: 0 .9rem; }
details > *:nth-child(2) { padding-top: .9rem; }
details > :last-child { padding-bottom: .9rem; }

/* ═══ Screenshots with live annotation overlay ════════════════════ */
figure.shot { margin: 0 0 1.75rem; }
.shot-frame {
  position: relative; border: 1px solid var(--shot-frame); border-radius: var(--r-lg);
  overflow: hidden; background: var(--color-bg-subtle); box-shadow: var(--shadow-md);
  line-height: 0;
}
.shot-frame img { width: 100%; height: auto; }
.shot-frame img.dark-only { display: none; }
[data-theme="dark"] .shot-frame img.light-only { display: none; }
[data-theme="dark"] .shot-frame img.dark-only { display: block; }

.shot-overlay { position: absolute; inset: 0; pointer-events: none; }
.shot-hl {
  position: absolute; border: 2px solid var(--hl-stroke); border-radius: 5px;
  background: var(--hl-wash); box-shadow: 0 0 0 9999px rgba(0,0,0,0);
  animation: shot-in .45s cubic-bezier(.2,.8,.2,1) both;
}
@keyframes shot-in { from { opacity: 0; transform: scale(.985); } to { opacity: 1; transform: none; } }
.shot-pin {
  position: absolute; transform: translate(-58%, -58%);
  width: 21px; height: 21px; border-radius: 999px;
  background: var(--pin-bg); color: var(--pin-fg);
  display: grid; place-items: center;
  font-family: var(--font-mono); font-size: 11px; font-weight: 700; line-height: 1;
  box-shadow: 0 0 0 3px var(--pin-ring), var(--shadow-sm);
}
/* The pointer that "shows" the reader where to click. */
.shot-cursor { position: absolute; width: 22px; height: 22px; transform: translate(-3px,-2px); filter: drop-shadow(0 1px 2px rgba(0,0,0,.45)); }
.shot-cursor svg { width: 100%; height: 100%; }

.shot-legend { list-style: none; margin: .75rem 0 0; padding: 0; display: grid; gap: .4rem; }
.shot-legend li { display: grid; grid-template-columns: 1.4rem 1fr; gap: .55rem; align-items: start; font-size: 13.5px; }
.shot-legend .n {
  width: 19px; height: 19px; border-radius: 999px; background: var(--color-accent-soft);
  color: var(--color-ink); display: grid; place-items: center; margin-top: .12rem;
  font-family: var(--font-mono); font-size: 10.5px; font-weight: 700;
}
.shot-legend li.missing .n { background: var(--color-error-soft); color: var(--color-error); }
figcaption { font-size: 12.5px; color: var(--color-light); margin-top: .6rem; display: flex; gap: .5rem; align-items: baseline; }
figcaption .where { font-family: var(--font-mono); font-size: 11px; }
.shot-zoom { position: fixed; inset: 0; z-index: 90; background: rgba(0,0,0,.82); display: grid; place-items: center; padding: 2rem; cursor: zoom-out; }
.shot-zoom img { max-width: 100%; max-height: 100%; border-radius: var(--r-md); box-shadow: var(--shadow-xl); }

/* ═══ Mermaid diagrams ════════════════════════════════════════════ */
.diagram {
  margin: 0 0 1.75rem; padding: 1.25rem; overflow-x: auto;
  border: 1px solid var(--color-line); border-radius: var(--r-lg);
  background: var(--color-surface);
  background-image: radial-gradient(var(--color-grid-dot) 1px, transparent 0);
  background-size: 22px 22px; background-position: -1px -1px;
}
.diagram .mermaid { display: flex; justify-content: center; min-width: min-content; }
.diagram .mermaid svg { max-width: 100%; height: auto; }
.diagram-title { font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--color-light); margin-bottom: .75rem; font-weight: 700; }

/* ═══ Right-hand table of contents ════════════════════════════════ */
.toc {
  position: sticky; top: var(--topbar); height: calc(100vh - var(--topbar));
  overflow-y: auto; padding: 2.25rem 1.25rem 4rem .5rem; font-size: 12.5px;
}
.toc-title { font-size: 10.5px; text-transform: uppercase; letter-spacing: .09em; color: var(--color-light); font-weight: 700; margin-bottom: .6rem; }
.toc ul { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--color-line); }
.toc a { display: block; padding: .25rem 0 .25rem .75rem; margin-left: -1px; color: var(--color-mid); text-decoration: none; border-left: 2px solid transparent; line-height: 1.4; }
.toc a:hover { color: var(--color-ink); }
.toc a.lvl-3 { padding-left: 1.6rem; font-size: 12px; }
.toc a.active { color: var(--color-ink); font-weight: 600; border-left-color: var(--color-ink); }

/* ═══ Prev / next ═════════════════════════════════════════════════ */
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; margin-top: 4rem; padding-top: 2rem; border-top: 1px solid var(--color-line); }
.pager a {
  display: block; padding: .85rem 1rem; border: 1px solid var(--color-line); border-radius: var(--r-md);
  text-decoration: none; background: var(--color-surface); transition: border-color .12s, box-shadow .12s;
}
.pager a:hover { border-color: var(--color-line-strong); box-shadow: var(--shadow-sm); }
.pager .dir { font-size: 10.5px; text-transform: uppercase; letter-spacing: .07em; color: var(--color-light); margin-bottom: .2rem; }
.pager .name { font-size: 14px; font-weight: 600; color: var(--color-ink); }
.pager .next { text-align: right; grid-column: 2; }
.pager .prev { grid-column: 1; }

/* ═══ Command palette ═════════════════════════════════════════════ */
.scrim { position: fixed; inset: 0; z-index: 80; background: rgba(0,0,0,.4); backdrop-filter: blur(2px); }
[data-theme="dark"] .scrim { background: rgba(0,0,0,.6); }
.palette {
  position: fixed; z-index: 81; top: 12vh; left: 50%; transform: translateX(-50%);
  width: min(42rem, calc(100vw - 2rem)); max-height: 70vh; display: flex; flex-direction: column;
  background: var(--color-surface); border: 1px solid var(--color-line-strong);
  border-radius: var(--r-lg); box-shadow: var(--shadow-xl); overflow: hidden;
}
.palette-input { display: flex; align-items: center; gap: .6rem; padding: .85rem 1rem; border-bottom: 1px solid var(--color-line); }
.palette-input input { flex: 1; font: inherit; font-size: 15px; background: transparent; border: 0; color: var(--color-ink); outline: none; }
.palette-input input::placeholder { color: var(--color-light); }
.palette-results { overflow-y: auto; padding: .4rem; }
.palette-group { font-size: 10.5px; text-transform: uppercase; letter-spacing: .08em; color: var(--color-light); font-weight: 700; padding: .6rem .7rem .3rem; }
.palette-item { display: block; padding: .5rem .7rem; border-radius: var(--r-sm); text-decoration: none; color: var(--color-ink); }
.palette-item .t { font-size: 13.5px; font-weight: 600; }
.palette-item .c { font-size: 11.5px; color: var(--color-light); margin-top: .1rem; }
.palette-item .c mark, .palette-item .t mark { background: color-mix(in srgb, var(--color-warning) 28%, transparent); color: inherit; border-radius: 2px; padding: 0 1px; }
.palette-item[data-active="true"] { background: var(--color-accent-soft); }
.palette-empty { padding: 2rem 1rem; text-align: center; color: var(--color-light); font-size: 13px; }
.palette-foot { display: flex; gap: 1rem; padding: .5rem 1rem; border-top: 1px solid var(--color-line); background: var(--color-bg-subtle); font-size: 11px; color: var(--color-light); }
.palette-foot span { display: flex; align-items: center; gap: .3rem; }

/* ═══ Shortcut overlay ════════════════════════════════════════════ */
.sheet {
  position: fixed; z-index: 81; top: 50%; left: 50%; transform: translate(-50%,-50%);
  width: min(46rem, calc(100vw - 2rem)); max-height: 80vh; overflow-y: auto;
  background: var(--color-surface); border: 1px solid var(--color-line-strong);
  border-radius: var(--r-lg); box-shadow: var(--shadow-xl); padding: 1.5rem;
}
.sheet h2 { margin: 0 0 1.25rem; font-size: 1.1rem; }
.sheet-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(17rem,1fr)); gap: 1.5rem; }
.sheet-grid h3 { font-size: 11px; text-transform: uppercase; letter-spacing: .07em; color: var(--color-light); margin: 0 0 .6rem; }
.sheet-row { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: .3rem 0; font-size: 13px; border-bottom: 1px solid var(--color-line-subtle); }
.sheet-row:last-child { border-bottom: 0; }
.sheet-row .keys { display: flex; gap: .2rem; align-items: center; flex-shrink: 0; }
.sheet-row .keys .then { font-size: 10px; color: var(--color-light); }

/* ═══ Home page ═══════════════════════════════════════════════════ */
.home { max-width: 60rem; margin: 0 auto; padding: 3.5rem 2rem 7rem; }
.home-hero { text-align: center; margin-bottom: 3.5rem; }
.home-hero .mark { width: 54px; height: 54px; border-radius: 12px; margin: 0 auto 1.25rem; background: var(--color-ink); color: var(--color-bg); display: grid; place-items: center; font-family: var(--font-mono); font-weight: 700; font-size: 22px; letter-spacing: -.05em; }
.home-hero h1 { font-size: 2.6rem; letter-spacing: -.03em; margin: 0 0 .5rem; font-weight: 700; }
.home-hero .tagline { font-size: 1.125rem; color: var(--color-mid); margin: 0; }
.home-sets { display: grid; grid-template-columns: repeat(auto-fit, minmax(19rem,1fr)); gap: 1rem; margin-bottom: 3rem; }
.home-card {
  display: block; padding: 1.5rem; text-decoration: none; color: inherit;
  background: var(--color-surface); border: 1px solid var(--color-line); border-radius: var(--r-lg);
  transition: border-color .15s, box-shadow .15s, transform .15s;
}
.home-card:hover { border-color: var(--color-line-strong); box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.home-card .eyebrow { font-size: 10.5px; text-transform: uppercase; letter-spacing: .09em; font-weight: 700; margin-bottom: .5rem; }
.home-card h2 { font-size: 1.3rem; margin: 0 0 .4rem; }
.home-card p { color: var(--color-mid); margin: 0 0 1rem; font-size: 14px; }
.home-card .count { font-family: var(--font-mono); font-size: 11.5px; color: var(--color-light); }
.home-sections { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem,1fr)); gap: 1.25rem 2rem; }
.home-sections h3 { font-size: 11px; text-transform: uppercase; letter-spacing: .07em; color: var(--color-light); margin: 0 0 .5rem; }
.home-sections ul { list-style: none; margin: 0; padding: 0; }
.home-sections li { margin-bottom: .25rem; }
.home-sections a { font-size: 13.5px; color: var(--color-mid); text-decoration: none; }
.home-sections a:hover { color: var(--color-ink); }
.home-foot { margin-top: 3.5rem; padding-top: 1.5rem; border-top: 1px solid var(--color-line); font-size: 12px; color: var(--color-light); text-align: center; }

/* ═══ Footer ══════════════════════════════════════════════════════ */
.pagefoot { margin-top: 3rem; font-size: 11.5px; color: var(--color-light); font-family: var(--font-mono); }

/* ═══ Responsive ══════════════════════════════════════════════════ */
@media (max-width: 1180px) {
  .shell { grid-template-columns: var(--rail) minmax(0,1fr); }
  body.rail-hidden .shell { grid-template-columns: 0 minmax(0,1fr); }
  .toc { display: none; }
  main { padding: 2rem 2rem 6rem; }
}
@media (max-width: 860px) {
  .shell { grid-template-columns: minmax(0,1fr); }
  body.rail-hidden .shell { grid-template-columns: minmax(0,1fr); }
  .rail {
    position: fixed; top: var(--topbar); left: 0; width: min(20rem, 84vw); z-index: 55;
    background: var(--color-bg); box-shadow: var(--shadow-xl);
    transform: translateX(-100%); visibility: hidden;
  }
  body:not(.rail-hidden) .rail { transform: none; visibility: visible; }
  .brand-sub, .setswitch a .full { display: none; }
  .searchbtn { min-width: 0; }
  .searchbtn .grow, .searchbtn kbd { display: none; }
  main { padding: 1.5rem 1.15rem 5rem; }
  .page-title { font-size: 1.7rem; }
  .pager { grid-template-columns: 1fr; }
  .pager .next, .pager .prev { grid-column: 1; text-align: left; }
}

/* ═══ Print ═══════════════════════════════════════════════════════ */
@media print {
  .topbar, .rail, .toc, .pager, .copybtn, .headerlink { display: none !important; }
  .shell { display: block; padding: 0; }
  main { padding: 0; }
  article { max-width: none; }
  .shot-frame img.dark-only { display: none !important; }
  a { text-decoration: none; }
  .codeblock, .diagram, .tablewrap, figure.shot { break-inside: avoid; }
}

/* ═══ Support-site additions: section tabs, contact CTA, home tasks, help band ═══ */
.topnav { display: flex; align-items: center; gap: 2px; margin-left: .75rem; min-width: 0; }
.topnav a {
  font-size: 13px; padding: .35rem .65rem; border-radius: var(--r-sm); text-decoration: none;
  color: var(--color-mid); white-space: nowrap; transition: background .12s, color .12s;
}
.topnav a:hover { color: var(--color-ink); background: var(--color-surface-hover); }
.topnav a[aria-current="true"] { color: var(--color-ink); font-weight: 600; background: var(--color-bg-subtle); box-shadow: inset 0 0 0 1px var(--color-line); }
.topcta {
  display: inline-flex; align-items: center; gap: .45rem; height: 30px; padding: 0 .8rem; margin-left: .25rem;
  font-size: 12.5px; font-weight: 600; text-decoration: none; white-space: nowrap;
  background: var(--color-accent); color: var(--color-on-accent); border-radius: var(--r-md);
  transition: background .12s;
}
.topcta:hover { background: var(--color-accent-hover); }
.topcta svg { width: 14px; height: 14px; }

.home-hero { margin-bottom: 3rem; }
.home-search {
  display: flex; align-items: center; gap: .65rem; width: 100%; max-width: 34rem; margin: 2rem auto 0;
  padding: .8rem 1rem; font: inherit; font-size: 15px; color: var(--color-light); cursor: pointer;
  background: var(--color-surface); border: 1px solid var(--color-line); border-radius: var(--r-lg, 12px);
  box-shadow: var(--shadow-sm); transition: border-color .12s, box-shadow .12s;
}
.home-search:hover { border-color: var(--color-line-strong); box-shadow: var(--shadow-lg); }
.home-search svg { width: 18px; height: 18px; flex-shrink: 0; }
.home-search .grow { flex: 1; text-align: left; }
.home-label { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--color-light); margin: 0 0 .9rem; }
.home-tasks { display: grid; grid-template-columns: repeat(auto-fit, minmax(13.5rem, 1fr)); gap: .85rem; margin-bottom: 3rem; }
.home-task {
  display: flex; gap: .85rem; align-items: flex-start; padding: 1rem 1.1rem; text-decoration: none;
  background: var(--color-surface); border: 1px solid var(--color-line); border-radius: var(--r-lg, 12px);
  transition: border-color .12s, box-shadow .15s, transform .15s;
}
.home-task:hover { border-color: var(--color-line-strong); box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.home-task .ico { width: 34px; height: 34px; flex-shrink: 0; display: grid; place-items: center; border-radius: 9px; background: var(--color-op-io-soft); color: var(--color-op-io); }
.home-task .ico svg { width: 18px; height: 18px; }
.home-task strong { display: block; font-size: 14px; color: var(--color-ink); margin-bottom: .15rem; }
.home-task span span { display: block; font-size: 12.5px; line-height: 1.5; color: var(--color-mid); }
.home .home-sections { margin-bottom: 3rem; }

.helpband {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem 2rem;
  margin: 3rem 0 1.5rem; padding: 1.25rem 1.5rem;
  background: var(--color-surface); border: 1px solid var(--color-line); border-radius: var(--r-lg, 12px);
}
.helpband h2 { font-size: 15px; margin: 0 0 .2rem; border: 0; padding: 0; }
.helpband p { margin: 0; font-size: 13.5px; color: var(--color-mid); }
.helpband-actions { display: flex; gap: .5rem; flex-wrap: wrap; }
.helpband .btn {
  display: inline-flex; align-items: center; height: 34px; padding: 0 .95rem; border-radius: var(--r-md);
  font-size: 13px; font-weight: 600; text-decoration: none; white-space: nowrap;
  background: var(--color-accent); color: var(--color-on-accent); border: 1px solid var(--color-accent);
}
.helpband .btn:hover { background: var(--color-accent-hover); }
.helpband .btn.ghost { background: transparent; color: var(--color-ink); border-color: var(--color-line-strong); }
.helpband .btn.ghost:hover { background: var(--color-surface-hover); }

@media (max-width: 1240px) { .topnav { display: none; } }
@media (max-width: 760px) {
  .brand-sub { display: none; }
  .searchbtn { min-width: 0; }
  .searchbtn .grow, .searchbtn kbd { display: none; }
  .topcta { width: 30px; padding: 0; justify-content: center; }
  .topcta span { display: none; }
  .home { padding: 2rem 1rem 5rem; }
  .home-hero h1 { font-size: 2rem; }
}
.home { padding-top: calc(var(--topbar) + 3.5rem); }
.home-tasks { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 1100px) { .home-tasks { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 760px)  { .home { padding-top: calc(var(--topbar) + 2rem); } .home-tasks { grid-template-columns: 1fr; } }

/* ═══ Calm palette: navy as the single accent, neutrals elsewhere ═══ */
:root {
  --docs-accent: #0D3B66;        --docs-accent-soft: #EEF3F8;   --docs-accent-line: #D5E1EC;
  --docs-tip-bg: #F6F6F4;        --docs-tip-line: #8A8F98;
  --docs-warn: #8A5A00;          --docs-warn-bg: #FBF6EC;       --docs-warn-line: #D9B36A;
}
[data-theme="dark"] {
  --docs-accent: #9DB8D3;        --docs-accent-soft: #13202C;   --docs-accent-line: #22364A;
  --docs-tip-bg: #161616;        --docs-tip-line: #5C6068;
  --docs-warn: #D9B36A;          --docs-warn-bg: #1C170D;       --docs-warn-line: #6B5427;
}
.tag.audience { background: var(--color-bg-subtle); color: var(--color-mid); border-color: var(--color-line); }
.tag.area     { background: var(--docs-accent-soft); color: var(--docs-accent); border-color: var(--docs-accent-line); }
.callout.tip  { background: var(--docs-tip-bg); border-left-color: var(--docs-tip-line); }
.callout.tip .callout-title { color: var(--color-ink); }
.callout.note { background: var(--docs-accent-soft); border-left-color: var(--docs-accent); }
.callout.note .callout-title { color: var(--docs-accent); }
.callout.warning { background: var(--docs-warn-bg); border-left-color: var(--docs-warn-line); }
.callout.warning .callout-title { color: var(--docs-warn); }
.home-task .ico { background: var(--docs-accent-soft); color: var(--docs-accent); box-shadow: inset 0 0 0 1px var(--docs-accent-line); }
.home-task:hover .ico { background: var(--docs-accent); color: var(--color-surface); box-shadow: none; }
.topnav a[aria-current="true"] { color: var(--docs-accent); background: var(--docs-accent-soft); box-shadow: inset 0 0 0 1px var(--docs-accent-line); }
.rail a[aria-current="page"] { color: var(--docs-accent); }
.toc a.active, .toc a[aria-current] { color: var(--docs-accent); }

/* ═══ DocFlo logo ═══ */
.brand-logo { width: 28px; height: 28px; display: grid; place-items: center; color: var(--color-ink); flex-shrink: 0; }
.brand-logo svg { width: 100%; height: 100%; display: block; }
.hero-logo {
  width: 76px; height: 76px; margin: 0 auto 1.4rem; padding: 12px; color: var(--color-ink);
  background: var(--color-surface); border: 1px solid var(--color-line); border-radius: 18px; box-shadow: var(--shadow-sm);
}
.hero-logo svg { width: 100%; height: 100%; display: block; }