/* Plain developer documentation. Monochrome, system fonts, flat. */
:root{
  --bg:#ffffff; --fg:#1a1a1a; --muted:#6b7280; --faint:#9ca3af;
  --line:#e5e7eb; --surface:#ffffff; --surface-2:#f7f7f8; --code-bg:#f2f3f5;
  color-scheme:light;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
:root[data-theme="dark"]{
  --bg:#101215; --fg:#e6e7e9; --muted:#9aa0a8; --faint:#6b7178;
  --line:#282b30; --surface:#15171b; --surface-2:#1a1d21; --code-bg:#1c1f24;
  color-scheme:dark;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#101215; --fg:#e6e7e9; --muted:#9aa0a8; --faint:#6b7178;
    --line:#282b30; --surface:#15171b; --surface-2:#1a1d21; --code-bg:#1c1f24;
    color-scheme:dark;
  }
}

*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--sans);
  font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased;display:flex}
code,.mono{font-family:var(--mono)}

/* ---------- sidebar ---------- */
.sidebar{width:240px;flex:none;border-right:1px solid var(--line);height:100vh;
  position:sticky;top:0;overflow-y:auto;background:var(--bg)}
.brand{display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:16px 16px 14px;border-bottom:1px solid var(--line)}
.brand .name{font-weight:600;font-size:14px}
.brand .sub{font-family:var(--mono);font-size:10.5px;color:var(--faint);
  letter-spacing:.04em;margin-top:2px}
.icon-btn{appearance:none;border:1px solid var(--line);background:var(--surface);
  color:var(--muted);width:28px;height:28px;border-radius:6px;cursor:pointer;
  display:inline-flex;align-items:center;justify-content:center;flex:none;font-size:14px;line-height:1}
.icon-btn:hover{color:var(--fg);border-color:var(--muted)}

.nav{padding:10px 8px}
.nav .group-label{font-family:var(--mono);font-size:10px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--faint);padding:12px 8px 6px}
.nav a{display:block;padding:6px 8px;border-radius:5px;color:var(--fg);
  text-decoration:none;font-size:14px;border-left:2px solid transparent}
.nav a:hover{background:var(--surface-2)}
.nav a.active{background:var(--surface-2);font-weight:600;border-left-color:var(--fg)}

/* ---------- main ---------- */
.main{flex:1;min-width:0;height:100vh;overflow-y:auto}
.wrap{max-width:1100px;margin:0 auto;padding:34px 32px 90px}

.eyebrow{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--muted);margin:0 0 8px}
h1{font-weight:600;font-size:26px;line-height:1.2;margin:0 0 4px;letter-spacing:-.01em}
.summary{color:var(--muted);margin:8px 0 0;max-width:70ch}

[hidden]{display:none!important}

.viewtoggle{display:flex;width:100%;border:1px solid var(--line);border-radius:8px;overflow:hidden;
  margin:0 0 28px}
.viewtoggle button{appearance:none;border:none;background:var(--surface);color:var(--muted);
  font-family:var(--sans);font-size:14px;font-weight:500;padding:11px 18px;cursor:pointer;flex:1;text-align:center}
.viewtoggle button + button{border-left:1px solid var(--line)}
.viewtoggle button:hover:not(.active){color:var(--fg)}
.viewtoggle button.active{background:var(--surface-2);color:var(--fg);font-weight:600}

.section{margin-top:40px}
.section.panel{margin-top:18px}
.section > h2{font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;
  color:var(--muted);margin:0 0 14px;padding-bottom:8px;border-bottom:1px solid var(--line)}

.diagram{overflow-x:auto;padding:8px 0 4px}
.diagram .mermaid{min-width:260px}
.diagram svg{max-width:100%;height:auto}
.diagram.compact{padding:0}
.diagram.compact .mermaid{min-width:0}
.diagram.compact svg{max-width:230px}

.subflow{margin-top:24px}
.subflow .st{font-weight:600;font-size:14px;margin:0 0 2px}
.subflow .note{color:var(--muted);font-size:13.5px;margin:0 0 6px}

/* description table (Flowchart tab's "what each status means") */
table{width:100%;border-collapse:collapse;font-size:14px;margin-top:4px}
th,td{text-align:left;padding:9px 14px 9px 0;border-bottom:1px solid var(--line);vertical-align:top}
thead th{font-family:var(--mono);font-size:10.5px;letter-spacing:.05em;text-transform:uppercase;
  color:var(--faint);font-weight:600;border-bottom:1px solid var(--line)}
tbody tr:last-child td{border-bottom:none}
.v-notes{color:var(--muted);font-size:13.5px}
.st-name{font-weight:600;white-space:nowrap}

.toks{display:flex;flex-wrap:wrap;gap:5px}
code.tok{font-size:12px;background:var(--code-bg);border-radius:4px;padding:1px 6px;color:var(--fg)}
.dash{color:var(--faint)}

/* ---------- variable rows (collapsible, divided by lines — no card boxes) ---------- */
.varlist{border-top:1px solid var(--line)}
.varrow{border-bottom:1px solid var(--line)}
.varrow > summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:10px;
  padding:13px 4px;user-select:none}
.varrow > summary::-webkit-details-marker{display:none}
.varrow > summary::marker{content:""}
.varrow > summary:hover{background:var(--surface-2)}
.chev{display:inline-flex;color:var(--faint);font-size:13px;line-height:1;flex:none;
  transition:transform .15s}
.varrow[open] .chev{transform:rotate(180deg)}
.varrow-name{font-weight:600;font-size:14.5px}
.varrow-name .draft{font-family:var(--mono);font-size:10.5px;color:var(--faint);font-weight:400;margin-left:6px}
.varid{font-family:var(--mono);font-size:11.5px;color:var(--muted);background:var(--code-bg);
  border-radius:4px;padding:1px 6px}
.varrow-right{margin-left:auto;display:flex;align-items:center;gap:12px;flex:none}
.varrow > summary .vartype{font-family:var(--mono);font-size:11.5px;color:var(--muted)}

/* Editable / Read-only marker (variable rows + association fields) */
.editbadge{font-family:var(--mono);font-size:10px;letter-spacing:.04em;border-radius:4px;
  padding:1px 6px;white-space:nowrap;flex:none}
.editbadge.rw{color:var(--fg);border:1px solid var(--fg)}
.editbadge.ro{color:var(--faint);border:1px solid var(--line)}

.varrow-body{display:grid;grid-template-columns:1fr 260px;padding:0 4px 18px}
.varrow-body.noflow{grid-template-columns:1fr}
.varrow-main{padding-right:20px}
.varrow-flow{padding:14px;border-left:1px solid var(--line);background:var(--surface-2);
  border-radius:10px;display:flex;flex-direction:column}
.vardesc{color:var(--muted);font-size:13.5px;margin:0;max-width:62ch}

.varsection{margin-top:16px}
.varlabel{display:block;font-family:var(--mono);font-size:10px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--faint);margin-bottom:7px}

.vardemo select,.vardemo input[type="text"],.vardemo input[type="number"],.vardemo textarea{
  width:100%;max-width:340px;border:1px solid var(--line);border-radius:7px;padding:8px 11px;
  font:inherit;font-size:13.5px;background:var(--bg);color:var(--fg);cursor:text}
.vardemo select{cursor:pointer}
.vardemo select:hover:not(:disabled),.vardemo input:hover:not(:disabled),.vardemo textarea:hover:not(:disabled){border-color:var(--muted)}
/* read-only fields: same control, visibly locked */
.vardemo select:disabled,.vardemo input:disabled,.vardemo textarea:disabled{
  background:var(--surface-2);color:var(--muted);cursor:not-allowed;opacity:1}
.demotoggle.is-disabled{cursor:not-allowed;opacity:.55}
.demomoney.is-disabled{background:var(--surface-2)}
.demomoney.is-disabled:hover{border-color:var(--line)}
.demomoney.is-disabled input{background:var(--surface-2);color:var(--muted);cursor:not-allowed}
.vardemo select:focus,.vardemo input:focus,.vardemo textarea:focus{outline:2px solid var(--fg);
  outline-offset:1px}
.vardemo textarea{resize:none;font-family:var(--sans)}

.demochecks{display:flex;flex-direction:column;gap:7px}
.demochecks label{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--fg);cursor:pointer}

.demotoggle{position:relative;display:inline-flex;align-items:center;gap:9px;cursor:pointer}
.demotoggle input{position:absolute;opacity:0;pointer-events:none;width:36px;height:20px;margin:0}
.demotoggletrack{width:36px;height:20px;border-radius:999px;background:var(--line);
  position:relative;flex:none;transition:background .15s}
.demotoggleknob{position:absolute;top:2px;left:2px;width:16px;height:16px;border-radius:50%;
  background:var(--surface);box-shadow:0 1px 2px rgba(0,0,0,.25);transition:left .15s}
.demotoggle input:checked + .demotoggletrack{background:var(--fg)}
.demotoggle input:checked + .demotoggletrack .demotoggleknob{left:18px}
.demotoggle input:focus-visible + .demotoggletrack{outline:2px solid var(--fg);outline-offset:2px}
.demotogglestate{font-size:12.5px;color:var(--muted)}

.demoref{display:inline-block;font-size:13.5px;color:var(--fg);background:var(--surface-2);
  border:1px solid var(--line);border-radius:7px;padding:7px 12px}

.demolist{display:flex;flex-direction:column;gap:6px;max-width:420px}
.demolistitem{font-size:13px;background:var(--surface-2);border:1px solid var(--line);
  border-radius:7px;padding:7px 11px;color:var(--fg)}
.demolistitem.dash{color:var(--faint)}

.demomoney{display:flex;align-items:stretch;max-width:340px;border:1px solid var(--line);
  border-radius:7px;overflow:hidden;font-variant-numeric:tabular-nums}
.demomoney:hover{border-color:var(--muted)}
.demomoney:focus-within{outline:2px solid var(--fg);outline-offset:1px}
.demomoneyprefix{display:flex;align-items:center;padding:0 10px;background:var(--surface-2);
  color:var(--muted);font-size:13.5px;flex:none}
.demomoney input{flex:1;min-width:0;border:none;border-radius:0;padding:8px 11px;font:inherit;
  font-size:13.5px;background:var(--bg);color:var(--fg)}
.demomoney input:focus{outline:none}

/* Data Structure tab: collapsible top-level sections (Variables, Associations) */
.datasection{margin-top:8px}
.datasection + .datasection{margin-top:36px}
.datasection > summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:10px;
  padding:6px 0 14px;user-select:none}
.datasection > summary::-webkit-details-marker{display:none}
.datasection > summary::marker{content:""}
.datasection > summary h2{margin:0;font-size:17px;font-weight:600;letter-spacing:-.005em}
.datasection > summary .chev{font-size:15px}
.datasection[open] > summary .chev{transform:rotate(180deg)}
.datacount{font-family:var(--mono);font-size:11.5px;color:var(--muted);background:var(--code-bg);
  border-radius:4px;padding:1px 7px}
.datasection:not([open]) > summary{padding-bottom:6px}

/* Association cards */
.assoccards{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.assoccard{border:1px solid var(--line);border-radius:10px;background:var(--surface);
  padding:16px 18px;display:flex;flex-direction:column}
.assochead{display:flex;align-items:flex-start;gap:10px}
.assoctitle{flex:1;min-width:0}
.assoctitle .draft{margin-left:6px}
.assocname{font-weight:600;font-size:14.5px}
.assochead .draft{font-family:var(--mono);font-size:10.5px;color:var(--faint)}
.assochead .varid{flex:none}
.assocmeta{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:11.5px;
  color:var(--muted);margin-top:4px}
.assocrel{border:1px solid var(--line);border-radius:4px;padding:0 6px;font-size:10.5px}
.assocdesc{color:var(--muted);font-size:13px;margin:10px 0 14px}
.assoccard .varlabel{margin-top:auto}
.assocfields{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.assocfields li{display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:7px 0;border-bottom:1px solid var(--line);font-size:13.5px}
.assocfields li:last-child{border-bottom:none}

/* Variables tab header: Collapse all / Expand all */
.varlistbar{display:flex;justify-content:flex-end;margin:-4px 0 8px}
.varsalltoggle{appearance:none;border:1px solid var(--line);background:var(--surface);
  color:var(--muted);font:inherit;font-size:12.5px;font-weight:500;border-radius:7px;
  padding:6px 12px;cursor:pointer}
.varsalltoggle:hover{color:var(--fg);border-color:var(--muted)}

@media (max-width:820px){
  body{flex-direction:column}
  .sidebar{position:static;width:100%;height:auto;border-right:none;
    border-bottom:1px solid var(--line)}
  .main{height:auto}
  .wrap{padding:24px 18px 60px}
  .varrow-body{grid-template-columns:1fr}
  .varrow-flow{border-left:none;border-top:1px solid var(--line);margin-top:14px}
}

/* ---------- Flow & Actions tab + cross-links ---------- */
.editbadge.ov{color:var(--fg);border:1px dashed var(--fg)}
.secnote{color:var(--muted);font-size:13.5px;margin:-4px 0 10px;max-width:70ch}
.datasection > summary .draft{font-family:var(--mono);font-size:10.5px;color:var(--faint)}

/* clickable links between a variable and the actions that change it */
.actlink{appearance:none;font-family:var(--mono);font-size:12px;color:var(--fg);background:var(--surface);
  border:1px solid var(--line);border-radius:4px;padding:1px 7px;cursor:pointer}
.actlink:hover{border-color:var(--fg)}
.actlink:focus-visible{outline:2px solid var(--fg);outline-offset:1px}

/* action rows reuse .varrow; these are the action-specific bits */
.actgroup + .actgroup{margin-top:22px}
.actgrouphead{display:flex;align-items:center;gap:8px;margin:0 0 6px;font-size:12px;font-weight:600;
  font-family:var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.actorbadge{font-family:var(--mono);font-size:10px;letter-spacing:.04em;border-radius:4px;padding:1px 6px;
  white-space:nowrap;background:var(--code-bg);color:var(--muted)}
.actorbadge.actor-user{background:var(--fg);color:var(--bg)}
.actgrid{display:grid;grid-template-columns:130px 1fr;gap:8px 16px;margin:14px 0 0;font-size:13.5px}
.actgrid dt{font-family:var(--mono);font-size:10px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--faint);padding-top:3px}
.actgrid dd{margin:0;color:var(--fg)}
.actlist-ul{margin:0;padding-left:16px}
.actlist-ul li + li{margin-top:2px}

/* association behaviour note (e.g. "opens the Order page") */
.assocbehavior{font-size:13px;color:var(--fg);border-left:2px solid var(--fg);padding:2px 0 2px 10px;margin:0 0 14px}
.assocbehavior .varlabel{margin-bottom:3px}

/* file demo control */
.demofile{display:inline-flex;align-items:center;gap:9px;font-size:13.5px;border:1px solid var(--line);
  border-radius:7px;padding:6px 12px 6px 6px;background:var(--bg);color:var(--fg)}
.demofile.is-disabled{background:var(--surface-2);color:var(--muted)}
.demofileext{font-family:var(--mono);font-size:10px;font-weight:600;background:var(--code-bg);
  border-radius:4px;padding:2px 5px;color:var(--fg)}

/* arrow labels that name an action are links */
.diagram .edgeLabel.edgelink{cursor:pointer}
.diagram .edgeLabel.edgelink span,.diagram .edgeLabel.edgelink p{text-decoration:underline;text-underline-offset:2px}
.diagram .edgeLabel.edgelink:hover span,.diagram .edgeLabel.edgelink:hover p{text-decoration-thickness:2px}

/* brief highlight when a cross-link lands on a row */
@keyframes rowflash{from{background:var(--code-bg)}to{background:transparent}}
.varrow.flash{animation:rowflash 1.4s ease-out}
@media (prefers-reduced-motion:reduce){.varrow.flash{animation:none;outline:2px solid var(--fg);outline-offset:-2px}}

@media (max-width:820px){ .actgrid{grid-template-columns:1fr;gap:2px 0} .actgrid dd{margin-bottom:8px} }
.untilnote{display:block;font-size:12px;color:var(--muted);margin-top:1px}