/* Piper cognition scorecard */
:root{
  color-scheme:light;
  --bg:#f6f5f2; --surface:#fcfcfb; --surface-2:#f0efeb; --line:#e2e0da; --line-2:#cfccc4;
  --ink:#1b1a18; --ink-2:#52514e; --ink-3:#7a7873;
  --accent:#2a78d6; --accent-ink:#1f5fae; --accent-soft:rgba(42,120,214,.14);
  --good:#1a7f37; --bad:#c2410c; --warn:#a16207;
  --radius:12px; --shadow:0 1px 2px rgba(0,0,0,.04),0 4px 16px rgba(0,0,0,.04);
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,serif;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    color-scheme:dark;
    --bg:#121211; --surface:#1a1a19; --surface-2:#222220; --line:#2e2d2a; --line-2:#3d3c38;
    --ink:#f2f1ec; --ink-2:#c3c2b7; --ink-3:#8f8d86;
    --accent:#3987e5; --accent-ink:#8cbcf5; --accent-soft:rgba(57,135,229,.2);
    --good:#4ac26b; --bad:#f0864a; --warn:#e3b341;
    --shadow:none;
  }
}
:root[data-theme="dark"]{
  color-scheme:dark;
  --bg:#121211; --surface:#1a1a19; --surface-2:#222220; --line:#2e2d2a; --line-2:#3d3c38;
  --ink:#f2f1ec; --ink-2:#c3c2b7; --ink-3:#8f8d86;
  --accent:#3987e5; --accent-ink:#8cbcf5; --accent-soft:rgba(57,135,229,.2);
  --good:#4ac26b; --bad:#f0864a; --warn:#e3b341;
  --shadow:none;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 var(--sans)}
a{color:var(--accent-ink);text-underline-offset:2px}
.wrap{max-width:1080px;margin:0 auto;padding:0 16px}
.narrow{max-width:460px}
.muted{color:var(--ink-3)} .small{font-size:.85rem} .strong{font-weight:650}
.nowrap{white-space:nowrap}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.num{font-variant-numeric:tabular-nums}
h1,h2,h3,h4{line-height:1.25;letter-spacing:-.01em}
h1{font-size:clamp(1.6rem,4vw,2.2rem);margin:.2em 0 .3em}
h2{font-size:1.15rem;margin:0 0 .6em}

/* top bar */
.top{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:14px;min-height:54px;flex-wrap:wrap;padding-top:6px;padding-bottom:6px}
.brand{font-weight:700;color:var(--ink);text-decoration:none;letter-spacing:.01em}
.top nav{display:flex;gap:4px;flex-wrap:wrap}
.top nav a{color:var(--ink-2);text-decoration:none;padding:5px 10px;border-radius:8px;font-size:.93rem}
.top nav a:hover{background:var(--surface-2)}
.top nav a[aria-current]{color:var(--ink);background:var(--surface-2);font-weight:600}
.who{margin-left:auto;display:flex;align-items:center;gap:8px}
form.inline{display:inline;margin:0}

/* buttons */
button,.primary,.ghost{font:inherit;cursor:pointer;border-radius:9px;text-decoration:none;display:inline-block}
.primary{background:var(--accent);color:#fff;border:0;padding:9px 16px;font-weight:600}
.primary:hover{filter:brightness(1.07)}
.ghost{background:transparent;color:var(--ink-2);border:1px solid var(--line-2);padding:5px 10px}
.ghost:hover{background:var(--surface-2);color:var(--ink)}
.ghost.small{padding:3px 9px;font-size:.82rem}
.danger{color:var(--bad)}

/* hero + tiles */
.hero{padding:28px 0 8px}
.lede{font-family:var(--serif);font-size:1.12rem;color:var(--ink-2);max-width:62ch;margin:0 0 18px}
.stat-tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px;margin:0 0 18px}
.tile{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px;display:flex;flex-direction:column;box-shadow:var(--shadow)}
.tile .lab{font-size:.78rem;color:var(--ink-3);text-transform:uppercase;letter-spacing:.06em}
.tile .val{font-size:1.9rem;font-weight:650;line-height:1.15}
.tile .val small{font-size:.9rem;color:var(--ink-3);font-weight:500}
.tile .sub{font-size:.8rem;color:var(--ink-3)}
.note{font-size:.85rem;color:var(--ink-3);border-left:3px solid var(--line-2);padding:2px 0 2px 10px;margin:10px 0 16px}

/* tables */
.toolbar{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:18px 0 10px}
.search input{font:inherit;padding:8px 12px;border-radius:9px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink);width:min(320px,86vw)}
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow)}
table.data{border-collapse:collapse;width:100%;font-size:.93rem}
.data th{font-size:.75rem;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-3);font-weight:600;text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);white-space:nowrap}
.data td{padding:9px 12px;border-bottom:1px solid var(--line);vertical-align:middle}
.data tbody tr:last-child td{border-bottom:0}
.data tbody tr:hover{background:var(--surface-2)}
.data .r{text-align:right}
.data td a{font-weight:600;text-decoration:none}
.data td a:hover{text-decoration:underline}
.read-cell{color:var(--ink-2);font-size:.88rem}
.up{color:var(--good);font-weight:600} .down{color:var(--bad);font-weight:600}
.notes{color:var(--ink-2);font-size:.88rem;min-width:180px}
.spark{width:96px;height:26px;display:block}
.spark polyline{fill:none;stroke:var(--accent);stroke-width:2;stroke-linejoin:round;stroke-linecap:round}
.spark circle{fill:var(--accent)}
@media (max-width:720px){
  .summary th:nth-child(3),.summary td:nth-child(3),
  .summary th:nth-child(4),.summary td:nth-child(4),
  .summary th:nth-child(8),.summary td:nth-child(8){display:none}
}

/* component page */
.crumbs{font-size:.85rem;color:var(--ink-3);margin:22px 0 4px}
.crumbs a{color:var(--ink-3)}
.comp-head{display:grid;grid-template-columns:1fr minmax(0,380px);gap:18px;align-items:end;margin-bottom:6px}
.comp-head .stat-tiles{margin:0;grid-template-columns:repeat(3,1fr)}
.comp-head .num{color:var(--ink-3);font-weight:500;margin-right:.15em}
.defn{font-family:var(--serif);font-size:1.12rem;font-style:italic;color:var(--ink-2);margin:0}
@media (max-width:760px){.comp-head{grid-template-columns:1fr}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;margin:14px 0;box-shadow:var(--shadow)}
.grid2{display:grid;grid-template-columns:3fr 2fr;gap:14px}
.grid2 .card{margin:14px 0 0}
@media (max-width:820px){.grid2{grid-template-columns:1fr}}
.prose{font-family:var(--serif);font-size:1.04rem;line-height:1.62}
.prose h2,.prose h3,.prose h4,.prose th,.prose .small,.prose table{font-family:var(--sans)}
.prose p{margin:.5em 0 .8em}
.prose code{font:.84em ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--surface-2);padding:1px 5px;border-radius:5px;word-break:break-word}
.prose table{border-collapse:collapse;width:100%;font-size:.9rem;margin:.6em 0 1em;display:block;overflow-x:auto}
.prose th,.prose td{border:1px solid var(--line);padding:6px 9px;text-align:left;vertical-align:top}
.prose th{background:var(--surface-2)}
.prose hr{border:0;border-top:1px solid var(--line);margin:2em 0}
main.prose{max-width:760px}
main.prose h2{font-size:1.5rem;margin-top:1.4em}
main.prose h3{font-size:1.15rem;margin-top:1.4em}
.review{border-left:4px solid var(--accent)}
.read{font-family:var(--sans);font-size:.92rem;background:var(--accent-soft);border-radius:8px;padding:6px 10px;display:inline-block;margin-top:0}
blockquote{margin:10px 0;padding:10px 16px;border-left:3px solid var(--line-2);color:var(--ink-2);font-family:var(--serif);font-style:italic;background:var(--surface)}
blockquote p{margin:0}
div.review{background:var(--surface);border-radius:var(--radius);padding:4px 20px 10px;border:1px solid var(--line);border-left:4px solid var(--accent)}

/* charts */
.panels{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px;margin:4px 0 8px}
.panel{margin:0;background:var(--surface-2);border-radius:10px;padding:8px 8px 4px}
.panel figcaption{font-size:.82rem;font-weight:600;color:var(--ink-2);padding:0 4px 2px}
.pill{font-size:.7rem;font-weight:600;border-radius:20px;padding:1px 7px;margin-left:4px;background:var(--line);color:var(--ink-3)}
.pill.cur{background:var(--accent-soft);color:var(--accent-ink)}
.chart{width:100%;height:auto;display:block;overflow:visible}
.chart .grid{stroke:var(--line-2);stroke-width:1;opacity:.6}
.chart .tick{fill:var(--ink-3);font-size:10px;font-family:var(--sans)}
.chart .band{fill:var(--accent-soft)}
.chart .base{stroke:var(--ink-3);stroke-width:1.25;stroke-dasharray:4 4}
.chart .line{fill:none;stroke:var(--accent);stroke-width:2;stroke-linejoin:round;stroke-linecap:round}
.chart .dot{fill:var(--accent);stroke:var(--surface-2);stroke-width:2}
.chart .dot.anchor{fill:var(--surface-2);stroke:var(--accent);stroke-width:2}
.chart .hit{fill:transparent;cursor:default}
.chart .pt:hover .dot{r:6}
.chart .dlabel{fill:var(--ink);font-size:11px;font-weight:650;font-family:var(--sans)}
#tip{position:fixed;z-index:20;pointer-events:none;background:var(--ink);color:var(--bg);font-size:.8rem;padding:5px 9px;border-radius:7px;max-width:260px;box-shadow:0 4px 14px rgba(0,0,0,.2)}

/* forms */
.editor{margin-top:14px;border-top:1px solid var(--line);padding-top:10px}
.editor summary{cursor:pointer;font-weight:600;color:var(--accent-ink)}
.form label{display:flex;flex-direction:column;gap:4px;font-size:.85rem;color:var(--ink-2)}
.form input,.form select,.form textarea{font:inherit;font-size:.95rem;padding:8px 10px;border-radius:8px;border:1px solid var(--line-2);background:var(--bg);color:var(--ink)}
.form textarea{resize:vertical}
.grid-form{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;margin-top:12px}
.grid-form .wide{grid-column:1/-1}
.card.form{display:flex;flex-direction:column;gap:12px}
.actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.err{color:var(--bad);font-weight:600}

/* interventions */
.iv{border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin:10px 0;background:var(--bg)}
.iv header{display:flex;gap:12px;flex-wrap:wrap;align-items:center;font-size:.88rem;color:var(--ink-2);margin-bottom:6px}
.iv p{margin:.3em 0}
.iv dl{display:grid;grid-template-columns:max-content 1fr;gap:4px 14px;margin:8px 0 0;font-size:.9rem}
.iv dt{color:var(--ink-3)} .iv dd{margin:0}
@media (max-width:600px){.iv dl{grid-template-columns:1fr}.iv dd{margin-bottom:6px}}
.decision{font-weight:650;border-radius:20px;padding:1px 9px;font-size:.8rem;background:var(--surface-2)}
.d-keep{color:var(--good)} .d-revert{color:var(--bad)} .d-pending{color:var(--warn)}

.pager{display:flex;justify-content:space-between;gap:10px;margin:22px 0 10px;flex-wrap:wrap}
.pager a{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:10px 14px;text-decoration:none;font-weight:600}
.foot{border-top:1px solid var(--line);margin-top:40px;padding:18px 0 30px}
@media print{.top,.editor,.pager,.foot,.js-edit,form.inline{display:none!important}.card{box-shadow:none;break-inside:avoid}body{background:#fff}}

.update{border-left:4px solid var(--good)}
.update h2 .muted{font-weight:500}
.doclist{list-style:none;padding:0;margin:0}
.doclist li{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:9px 0;border-bottom:1px solid var(--line)}
.doclist li:last-child{border-bottom:0}
.doclist a{font-weight:650;text-decoration:none}
.docpage article{margin-top:6px}
.docpage article h1{font-size:1.9rem}
.docpage article pre{background:var(--surface-2);padding:10px 12px;border-radius:8px;overflow-x:auto;font-size:.85rem}
.docpage article blockquote{font-style:normal}
.docmeta{margin:6px 0}
/* personality-over-time chart (2026-10-17); categorical slots validated on --surface-2 both modes */
.pers-card{--s1:#2a78d6;--s2:#eb6834;--s3:#1baf7a}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .pers-card{--s1:#3987e5;--s2:#d95926;--s3:#199e70}}
:root[data-theme="dark"] .pers-card{--s1:#3987e5;--s2:#d95926;--s3:#199e70}
.pers-card h3{font-size:1rem;margin:22px 0 6px}
.pers-card .stat-tiles{margin:12px 0 4px}
.pers-card .tile .lab{display:flex;align-items:center;gap:6px}
.pers-panel{padding:10px 8px 6px;margin:4px 0 8px}
.chart.pers .pl{fill:none;stroke-width:2;stroke-linejoin:round;stroke-linecap:round}
.chart.pers .pl.s1{stroke:var(--s1)} .chart.pers .pl.s2{stroke:var(--s2)} .chart.pers .pl.s3{stroke:var(--s3)}
.chart.pers .pd{stroke:var(--surface-2);stroke-width:2}
.chart.pers .pd.s1{fill:var(--s1)} .chart.pers .pd.s2{fill:var(--s2)} .chart.pers .pd.s3{fill:var(--s3)}
.chart.pers .pd.open{fill:var(--surface-2);stroke-width:2}
.chart.pers .pd.open.s1{stroke:var(--s1)} .chart.pers .pd.open.s2{stroke:var(--s2)} .chart.pers .pd.open.s3{stroke:var(--s3)}
.chart.pers .pt:hover .pd{r:6}
.chart.pers .dlab{fill:var(--ink-2);font-size:11px;font-family:var(--sans)}
.pers-legend{display:flex;flex-wrap:wrap;gap:6px 16px;font-size:.82rem;color:var(--ink-2);margin:2px 0 6px}
.pers-legend span{display:inline-flex;align-items:center;gap:6px}
.sw{display:inline-block;width:10px;height:10px;border-radius:50%;flex:none}
.sw.s1{background:var(--s1)} .sw.s2{background:var(--s2)} .sw.s3{background:var(--s3)}
.pers-table summary{cursor:pointer;color:var(--accent-ink);font-size:.9rem;margin:10px 0 8px}
.pers-panel{overflow-x:auto}
@media (max-width:600px){.chart.pers{min-width:560px}}