/* Layout: four columns that read left to right (who you face, topic, attack, your answer), joined by curves from the selected node. Stacks on phones. */
:root{
  --bg:#EDF1F4; --panel:#FFFFFF; --ink:#13202C; --muted:#53626F; --line:#C5CFD8;
  --accent:#0B6E75; --accent-ink:#FFFFFF; --sel:#D9EEF0; --chip:#E2E9EF;
  --attack:#A63A4B; --concede:#80540F; --link:#8EA3B3; --link-on:#0B6E75;
  --display:"Bricolage Grotesque","Segoe UI",system-ui,sans-serif;
  --body:"IBM Plex Sans","Segoe UI",system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0E1920; --panel:#15252F; --ink:#E6EEF3; --muted:#9BABB8; --line:#2B3E4C;
    --accent:#52C1C9; --accent-ink:#04242A; --sel:#17404A; --chip:#203542;
    --attack:#F2909F; --concede:#E6BA6C; --link:#3F5666; --link-on:#52C1C9; color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0E1920; --panel:#15252F; --ink:#E6EEF3; --muted:#9BABB8; --line:#2B3E4C;
  --accent:#52C1C9; --accent-ink:#04242A; --sel:#17404A; --chip:#203542;
  --attack:#F2909F; --concede:#E6BA6C; --link:#3F5666; --link-on:#52C1C9; color-scheme:dark;
}
*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:15px;line-height:1.5}
.wrap{max-width:1320px;margin-inline:auto;padding-inline:20px;padding-block:24px 48px}
header{display:flex;flex-wrap:wrap;gap:16px 32px;align-items:flex-end;justify-content:space-between;margin-bottom:20px}
h1{font-family:var(--display);font-size:clamp(28px,4vw,40px);line-height:1.05;margin:0 0 6px;letter-spacing:-0.01em}
.lead{margin:0;color:var(--muted);max-width:60ch}
.tools{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.tools input{font:inherit;color:var(--ink);background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:9px 12px;min-width:min(260px,100%)}
.btn{font:inherit;font-weight:500;color:var(--ink);background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:9px 14px;cursor:pointer}
.btn:hover{border-color:var(--accent)}
.btn[aria-pressed="true"]{background:var(--sel);border-color:var(--accent);color:var(--ink);box-shadow:inset 0 -2px 0 var(--accent)}
.seg{display:flex;gap:0}
.seg .btn{border-radius:0;margin-left:-1px}
.seg .btn:first-child{border-radius:6px 0 0 6px;margin-left:0}
.seg .btn:last-child{border-radius:0 6px 6px 0}
.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.map{position:relative;display:grid;grid-template-columns:minmax(150px,.75fr) minmax(190px,1fr) minmax(230px,1.1fr) minmax(300px,1.6fr);gap:56px;align-items:start}
#lines{position:absolute;inset:0;pointer-events:none;z-index:0;overflow:visible}
#lines path{fill:none;stroke:var(--link);stroke-width:1.5}
#lines path.on{stroke:var(--link-on);stroke-width:2.5}
.col{position:relative;z-index:1;display:flex;flex-direction:column;gap:10px;min-width:0}
.col h2{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:0 0 4px;font-weight:600}
.node{display:flex;flex-direction:column;align-items:flex-start;gap:4px;text-align:left;width:100%;font:inherit;color:var(--ink);background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:11px 13px;cursor:pointer}
.node:hover{border-color:var(--accent)}
.node[aria-pressed="true"]{background:var(--sel);border-color:var(--accent);box-shadow:inset 3px 0 0 var(--accent)}
.node .title{font-weight:600}
.node .sub{font-size:13px;color:var(--muted)}
.chip{font-family:var(--mono);font-size:11px;letter-spacing:.04em;text-transform:uppercase;background:var(--chip);color:var(--ink);border-radius:4px;padding:2px 6px}
.root .title{font-family:var(--display);font-size:20px;font-weight:700}
.empty{color:var(--muted);font-size:14px;border:1px dashed var(--line);border-radius:8px;padding:14px}
.answer{display:flex;flex-direction:column;position:sticky;top:env(safe-area-inset-top,0px);background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:20px;gap:14px;scroll-margin-top:16px}
.answer h3{font-family:var(--display);font-size:22px;line-height:1.15;margin:0}
.answer .head{display:flex;flex-direction:column;align-items:flex-start;gap:6px}
.lab{font-size:12px;letter-spacing:.1em;text-transform:uppercase;font-weight:600;margin:0 0 3px}
.lab.say{color:var(--muted)} .lab.reply{color:var(--accent)} .lab.ask{color:var(--ink)} .lab.concede{color:var(--concede)} .lab.src{color:var(--muted)}
.answer p{margin:0}
.reply-text{font-size:16px}
.src-text{font-family:var(--mono);font-size:12.5px;color:var(--muted);overflow-wrap:anywhere}
.src-text a{color:var(--accent);text-decoration:underline;text-underline-offset:2px}
.src-text a:hover{text-decoration-thickness:2px}
.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.status{font-size:13px;color:var(--muted)}
.results{margin:0 0 20px;padding:0;list-style:none;display:grid;gap:8px;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.results[hidden]{display:none}
.results .node .sub{overflow-wrap:anywhere}
.crumbs{font-size:13px;color:var(--muted);margin:0 0 16px}
footer{margin-top:32px;color:var(--muted);font-size:13px;max-width:80ch}
footer a{color:var(--accent)}
.kbd{font-family:var(--mono);font-size:11px;color:var(--muted)}
/* next-move variants: what they might say next, with your counter */
.vars{display:flex;flex-direction:column;gap:8px;border-top:1px solid var(--line);padding-top:12px}
.vtoggle{display:flex;gap:10px;align-items:flex-start;width:100%;text-align:left;font:inherit;color:var(--ink);background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:10px 12px;cursor:pointer}
.vtoggle:hover{border-color:var(--accent)}
.vtoggle[aria-expanded="true"]{background:var(--sel);border-color:var(--accent)}
.vnum{flex:none;font-family:var(--mono);font-size:11px;background:var(--chip);color:var(--ink);border-radius:4px;padding:2px 6px;margin-top:1px}
.vtext{font-size:14px}
.vbody{display:flex;flex-direction:column;gap:10px;border-left:3px solid var(--accent);margin-left:8px;padding:2px 0 2px 12px}
.vbody[hidden]{display:none}
/* evidence file view */
#map[hidden]{display:none}
.evwrap{display:flex;flex-direction:column;gap:16px}
.evwrap[hidden]{display:none}
.evhead h2{font-family:var(--display);font-size:22px;margin:0}
.evhead p{margin:6px 0 0;color:var(--muted);font-size:14px;max-width:75ch}
.evtabs{display:flex;flex-wrap:wrap;gap:8px}
.evdoc{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:8px 26px 26px;max-width:95ch}
.evsec[hidden]{display:none}
.evdoc h1{font-family:var(--display);font-size:26px;margin:24px 0 8px;line-height:1.25}
.evdoc h2{font-family:var(--display);font-size:20px;margin:28px 0 8px;line-height:1.3}
.evdoc h3{font-family:var(--display);font-size:17px;margin:22px 0 6px}
.evdoc h4{font-size:15px;margin:18px 0 6px}
.evdoc p{margin:8px 0;font-size:15px;line-height:1.55}
.evdoc ul,.evdoc ol{margin:8px 0;padding-left:24px;font-size:15px;line-height:1.55}
.evdoc li{margin:4px 0}
.evdoc hr{border:0;border-top:1px solid var(--line);margin:20px 0}
.evdoc .item{scroll-margin-top:16px;border-radius:6px}
.evdoc .item.evhl,.evdoc h3.evhl,.evdoc li.evhl{background:color-mix(in srgb, var(--accent) 16%, transparent);outline:1px solid var(--accent);padding:6px 8px;border-radius:6px}
@keyframes evpulse{0%{background:color-mix(in srgb, var(--accent) 38%, transparent)}100%{background:color-mix(in srgb, var(--accent) 16%, transparent)}}
.evdoc .item.evhl,.evdoc h3.evhl,.evdoc li.evhl{animation:evpulse 1.6s ease-out 1}
.evdoc code{font-family:var(--mono)}
.evdoc blockquote.evq{margin:10px 0 14px;padding:10px 14px;border-left:3px solid var(--accent);background:color-mix(in srgb, var(--accent) 7%, transparent);border-radius:0 8px 8px 0}
.evdoc blockquote.evq p{margin:0;font-size:14px;line-height:1.5;font-style:italic}
.evdoc blockquote.evq cite{display:block;margin-top:6px;font-style:normal;font-size:13px;color:var(--muted)}
.answer .quote{margin:12px 0 0;padding:10px 14px;border-left:3px solid var(--accent);background:color-mix(in srgb, var(--accent) 7%, transparent);border-radius:0 8px 8px 0}
.answer .quote p{margin:0;font-style:italic;font-size:14px;line-height:1.5}
.answer .quote cite{display:block;margin-top:6px;font-style:normal;font-size:12.5px;color:var(--muted)}
@media (max-width:980px){
  .map{grid-template-columns:minmax(0,1fr);gap:24px}
  #lines{display:none}
  .answer{position:static}
}
@media (prefers-reduced-motion:no-preference){ .node,.btn{transition:border-color .12s,background .12s} }