/* UVL Studio — design tokens & layout.
 * Light palette on :root; dark via prefers-color-scheme and an optional
 * data-theme override. All components read tokens only. */
:root{
  color-scheme:light;
  --elh:20px;          /* editor line height — read by app.js, keep in sync */
  --efs:13px;          /* editor font size */
  --bg:#F3F2F7; --surface:#FFFFFF; --surface2:#ECEAF3; --ink:#232030; --muted:#6E6A80;
  --line:#DBD8E6; --accent:#5348B4; --accent-ink:#FFFFFF; --accent-soft:#EAE7FB;
  --ok:#1E7A4E; --ok-soft:#E1F2E8; --err:#C23A31; --err-soft:#F9E7E5;
  --warn:#96660A; --warn-soft:#F7EDD8;
  --tok-kw:#5348B4; --tok-grp:#0B7285; --tok-str:#B0451F; --tok-num:#0B7285;
  --tok-op:#8A2D7A; --tok-com:#8B879C; --tok-attr:#7A6A2F; --tok-typ:#9A3E9A;
  --d-node:#FBFAFE; --d-node-abs:#F0EDFA; --d-stroke:#8B84A8; --d-edge:#8B84A8; --d-text:#232030;
  --sel:rgba(83,72,180,.22); --caret:#232030; --shadow:0 1px 3px rgba(35,32,48,.10);
  --shadow-lg:0 6px 24px rgba(35,32,48,.18);
  --ui:"Avenir Next","Avenir","Segoe UI Variable","Segoe UI","Ubuntu","Helvetica Neue",sans-serif;
  --mono:ui-monospace,"SF Mono","Menlo","Cascadia Code","Consolas",monospace;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    color-scheme:dark;
    --bg:#141220; --surface:#1D1A2B; --surface2:#282440; --ink:#ECEAF6; --muted:#9B96B0;
    --line:#353046; --accent:#A79BFF; --accent-ink:#1D1A2B; --accent-soft:#2E2854;
    --ok:#5BC98D; --ok-soft:#18382A; --err:#F0837A; --err-soft:#3F211E;
    --warn:#E4B45E; --warn-soft:#3B311B;
    --tok-kw:#A79BFF; --tok-grp:#66C7D8; --tok-str:#E8A175; --tok-num:#66C7D8;
    --tok-op:#D98BC9; --tok-com:#736E8A; --tok-attr:#C9B26B; --tok-typ:#D98BC9;
    --d-node:#262239; --d-node-abs:#2E2850; --d-stroke:#6A6390; --d-edge:#6A6390; --d-text:#ECEAF6;
    --sel:rgba(167,155,255,.28); --caret:#ECEAF6; --shadow:0 1px 3px rgba(0,0,0,.4);
    --shadow-lg:0 6px 24px rgba(0,0,0,.55);
  }
}
:root[data-theme="dark"]{
  color-scheme:dark;
  --bg:#141220; --surface:#1D1A2B; --surface2:#282440; --ink:#ECEAF6; --muted:#9B96B0;
  --line:#353046; --accent:#A79BFF; --accent-ink:#1D1A2B; --accent-soft:#2E2854;
  --ok:#5BC98D; --ok-soft:#18382A; --err:#F0837A; --err-soft:#3F211E;
  --warn:#E4B45E; --warn-soft:#3B311B;
  --tok-kw:#A79BFF; --tok-grp:#66C7D8; --tok-str:#E8A175; --tok-num:#66C7D8;
  --tok-op:#D98BC9; --tok-com:#736E8A; --tok-attr:#C9B26B; --tok-typ:#D98BC9;
  --d-node:#262239; --d-node-abs:#2E2850; --d-stroke:#6A6390; --d-edge:#6A6390; --d-text:#ECEAF6;
  --sel:rgba(167,155,255,.28); --caret:#ECEAF6; --shadow:0 1px 3px rgba(0,0,0,.4);
  --shadow-lg:0 6px 24px rgba(0,0,0,.55);
}

/* ---------- shell ---------- */
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{display:flex;flex-direction:column;background:var(--bg);color:var(--ink);
  font:13px/1.45 var(--ui);overflow:hidden}
@supports (height:100dvh){ body{height:100dvh} }
button{font:inherit;color:inherit;background:none;border:none;cursor:pointer;padding:0}
button:disabled{opacity:.45;cursor:default}
button:focus-visible,select:focus-visible,textarea:focus-visible,input:focus-visible{
  outline:2px solid var(--accent);outline-offset:1px}
input,select{font:inherit;color:var(--ink)}
@media (prefers-reduced-motion: reduce){*{transition:none !important;animation:none !important}}

header{display:flex;align-items:center;gap:12px;height:48px;padding:0 14px;flex:none;
  background:var(--surface);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:9px;min-width:0}
.brand svg{flex:none}
.brand b{font-size:15px;font-weight:600;letter-spacing:.1px;white-space:nowrap}
.brand span{color:var(--muted);font-size:12px;white-space:nowrap}
@media (max-width:760px){.brand span{display:none}}
header select{font:12.5px var(--ui);background:var(--surface2);
  border:1px solid var(--line);border-radius:7px;padding:5px 8px;max-width:190px}
.hspace{flex:1}
.pill{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:99px;
  font-size:12px;font-weight:600;white-space:nowrap}
.pill.ok{background:var(--ok-soft);color:var(--ok)}
.pill.err{background:var(--err-soft);color:var(--err)}
.pill.warn{background:var(--warn-soft);color:var(--warn)}
.hbtn{padding:5px 11px;border-radius:7px;border:1px solid var(--line);background:var(--surface);
  font-size:12px;font-weight:500;white-space:nowrap}
.hbtn:hover:not(:disabled){background:var(--surface2)}
@media (max-width:900px){.optional-btn{display:none}}

main{flex:1;display:flex;min-height:0}
@media (max-width:860px){
  main{flex-direction:column}
  #editorPane{flex:0 0 45% !important;border-right:none !important;border-bottom:1px solid var(--line)}
  #splitter{display:none}
}

/* ---------- editor ---------- */
#editorPane{flex:0 0 var(--editor-w,44%);min-width:220px;display:flex;min-height:0;
  background:var(--surface);border-right:1px solid var(--line)}
#gutter{flex:none;width:46px;overflow:hidden;background:var(--surface);
  border-right:1px solid var(--line);position:relative;user-select:none}
#gutterInner{position:absolute;top:0;left:0;right:0;padding-top:10px;will-change:transform}
.gl{height:var(--elh);font-family:var(--mono);font-size:11.5px;line-height:var(--elh);
  color:var(--muted);text-align:right;padding-right:7px;position:relative;cursor:pointer}
.gl:hover{color:var(--ink)}
.gl::before{content:"";position:absolute;left:4px;top:7px;width:6px;height:6px;border-radius:99px}
.gl.err{color:var(--err);font-weight:700}
.gl.err::before{background:var(--err)}
.gl.warn{color:var(--warn);font-weight:700}
.gl.warn::before{background:var(--warn)}
.gl.flash{background:var(--accent-soft)}
.editor-stack{position:relative;flex:1;min-width:0}
#hl,#src{position:absolute;inset:0;margin:0;padding:10px 12px 40vh;border:0;
  font-family:var(--mono);font-size:var(--efs);line-height:var(--elh);
  tab-size:4;white-space:pre;overflow:auto}
#hl{pointer-events:none;overflow:hidden;color:var(--ink)}
#hl code{font:inherit}
#src{resize:none;background:transparent;color:transparent;caret-color:var(--caret);
  outline:none;z-index:1}
#src::selection{background:var(--sel)}
.c-kw{color:var(--tok-kw);font-weight:600}
.c-grp{color:var(--tok-grp);font-weight:600}
.c-str{color:var(--tok-str)}
.c-num,.c-card{color:var(--tok-num)}
.c-op{color:var(--tok-op)}
.c-com{color:var(--tok-com);font-style:italic}
.c-attr{color:var(--tok-attr)}
.c-typ{color:var(--tok-typ);font-style:italic}
.ln-err{text-decoration:underline wavy var(--err) 1px;text-underline-offset:4px}
.ln-warn{text-decoration:underline wavy var(--warn) 1px;text-underline-offset:4px}

/* ---------- editor completion & hover ---------- */
.acpopup{position:absolute;z-index:20;min-width:170px;max-width:320px;max-height:214px;
  overflow-y:auto;background:var(--surface);border:1px solid var(--line);border-radius:9px;
  box-shadow:var(--shadow-lg);padding:3px}
.acpopup[hidden]{display:none}
.ac-row{display:flex;align-items:baseline;gap:12px;padding:4px 9px;border-radius:6px;cursor:pointer}
.ac-row .ac-insert{font:12px var(--mono);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ac-row .ac-kind{margin-left:auto;font-size:9.5px;font-weight:600;color:var(--muted);
  text-transform:uppercase;letter-spacing:.4px}
.ac-row.on{background:var(--accent-soft)}
.hovertip{position:absolute;z-index:21;max-width:340px;background:var(--surface);
  border:1px solid var(--line);border-radius:9px;box-shadow:var(--shadow-lg);
  padding:8px 11px;font-size:12px;pointer-events:none}
.hovertip[hidden]{display:none}
.hovertip b{display:block;font:600 12.5px var(--mono);margin-bottom:3px}
.hovertip div{color:var(--muted);line-height:1.5}

#splitter{flex:none;width:6px;cursor:col-resize;background:transparent}
#splitter:hover,#splitter.drag{background:var(--accent-soft)}

/* ---------- right side ---------- */
#rightPane{flex:1;display:flex;flex-direction:column;min-width:0;min-height:0}
#viewBar{flex:none;display:flex;align-items:center;gap:12px;padding:7px 10px;
  background:var(--surface);border-bottom:1px solid var(--line)}
.seg{display:inline-flex;background:var(--surface2);border:1px solid var(--line);
  border-radius:8px;padding:2px;gap:2px}
.seg button{padding:4px 12px;border-radius:6px;font-size:12px;font-weight:500;color:var(--muted)}
.seg button:hover{color:var(--ink)}
.seg button.on{background:var(--surface);color:var(--ink);font-weight:600;box-shadow:var(--shadow)}
.vhint{color:var(--muted);font-size:11.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
@media (max-width:1100px){.vhint{display:none}}

#stage{flex:1;position:relative;min-height:120px;overflow:hidden}
#diagramWrap{position:absolute;inset:0}
#diagram{position:absolute;inset:0;width:100%;height:100%;touch-action:none;cursor:grab;display:block}
#diagram.panning{cursor:grabbing}
#diagram text{font-family:var(--ui)}
.node{cursor:pointer}
.node rect{transition:stroke .12s}
.node:hover rect{stroke:var(--accent);stroke-width:1.6}
.node.cursor rect{stroke:var(--accent);stroke-width:2}
.node.hl rect{stroke:var(--accent);stroke-width:2.2}
#emptyDiagram{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  color:var(--muted);font-size:13px;padding:20px;text-align:center;pointer-events:none}
#emptyDiagram[hidden]{display:none}
.dtools{position:absolute;top:10px;right:10px;display:flex;gap:6px;z-index:2}
.dtools button{width:30px;height:30px;border-radius:8px;background:var(--surface);
  border:1px solid var(--line);box-shadow:var(--shadow);font-size:14px;line-height:1;
  display:flex;align-items:center;justify-content:center;color:var(--ink)}
.dtools button:hover{background:var(--surface2)}
#legend{position:absolute;left:10px;bottom:10px;display:flex;gap:14px;align-items:center;
  background:var(--surface);border:1px solid var(--line);border-radius:9px;box-shadow:var(--shadow);
  padding:6px 12px;font-size:11.5px;color:var(--muted);z-index:2;flex-wrap:wrap;max-width:calc(100% - 20px)}
#legend .li{display:flex;align-items:center;gap:5px;white-space:nowrap}
#legend svg{flex:none}

/* ---------- context menu ---------- */
.cmenu{position:absolute;z-index:30;width:238px;background:var(--surface);
  border:1px solid var(--line);border-radius:11px;box-shadow:var(--shadow-lg);
  padding:6px;display:flex;flex-direction:column;gap:2px}
.cmenu-h{display:flex;align-items:baseline;gap:8px;padding:5px 9px 7px;border-bottom:1px solid var(--line);
  margin-bottom:3px}
.cmenu-h b{font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cmenu-h .lnk{margin-left:auto;color:var(--accent);font-size:11px;white-space:nowrap}
.cmenu-h .lnk:hover{text-decoration:underline}
.citem{display:block;width:100%;text-align:left;padding:6px 9px;border-radius:7px;font-size:12.5px}
.citem:hover{background:var(--accent-soft)}
.citem.danger{color:var(--err)}
.citem.danger:hover{background:var(--err-soft)}
.crow{display:flex;align-items:center;gap:6px;padding:4px 9px}
.crow .clabel{font-size:10.5px;font-weight:600;letter-spacing:.5px;text-transform:uppercase;
  color:var(--muted);min-width:58px}
.cseg{display:flex;gap:3px;flex-wrap:wrap}
.cseg button{padding:3px 8px;border-radius:6px;border:1px solid var(--line);font-size:11px;
  background:var(--surface)}
.cseg button:hover{border-color:var(--accent)}
.cseg button.on{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);font-weight:600}
.cform{display:flex;flex-direction:column;gap:6px;padding:6px 9px}
.cform input,.cform select{width:100%;padding:5px 8px;border:1px solid var(--line);border-radius:7px;
  background:var(--surface);font-size:12.5px}
.cform input{font-family:var(--mono)}
.cform .cbtns{display:flex;gap:6px;justify-content:flex-end}
.cform .cbtns button{padding:4px 12px;border-radius:7px;font-size:12px;border:1px solid var(--line)}
.cform .cbtns .primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);font-weight:600}
.cform .chint{font-size:11px;color:var(--muted)}
.cform .cerr{font-size:11px;color:var(--err)}

/* ---------- toast ---------- */
#toast{position:absolute;left:50%;bottom:16px;transform:translateX(-50%);z-index:40;
  background:var(--ink);color:var(--bg);padding:7px 16px;border-radius:9px;font-size:12.5px;
  box-shadow:var(--shadow-lg);opacity:0;pointer-events:none;transition:opacity .18s;max-width:80%}
#toast.show{opacity:1}
#toast.err{background:var(--err);color:#fff}

/* ---------- configurator ---------- */
#configWrap{position:absolute;inset:0;display:none;flex-direction:column;background:var(--bg)}
#configWrap.show{display:flex}
.cfg-head{flex:none;display:flex;align-items:center;gap:14px;padding:10px 16px;
  border-bottom:1px solid var(--line);background:var(--surface);flex-wrap:wrap}
.cfg-stat{font-size:12.5px;color:var(--muted)}
.cfg-stat b{color:var(--ink);font-variant-numeric:tabular-nums}
.cfg-count{font-size:12.5px;font-weight:600;color:var(--ok);background:var(--ok-soft);
  padding:3px 11px;border-radius:99px;font-variant-numeric:tabular-nums}
.cfg-count.zero{color:var(--err);background:var(--err-soft)}
#cfgReset{margin-left:auto}
#configBody{flex:1;overflow:auto;padding:10px 12px 30px}
.cfg-msg{color:var(--muted);padding:18px 10px;max-width:60ch}
.cfg-row{display:flex;align-items:center;gap:8px;padding:4px 8px;border-radius:8px;
  cursor:pointer;user-select:none;max-width:560px}
.cfg-row:hover{background:var(--accent-soft)}
.cfg-row.auto{cursor:default}
.cfg-row.auto:hover{background:var(--surface2)}
.cfg-ic{flex:none;width:20px;height:20px;border-radius:6px;display:flex;align-items:center;
  justify-content:center;font-size:12px;font-weight:700;border:1.5px solid var(--line);
  background:var(--surface);color:transparent}
.cfg-row.sel .cfg-ic{background:var(--ok);border-color:var(--ok);color:#fff}
.cfg-row.des .cfg-ic{background:var(--err);border-color:var(--err);color:#fff}
.cfg-row.auto .cfg-ic{opacity:.55}
.cfg-name{font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cfg-row.des .cfg-name{text-decoration:line-through;color:var(--muted)}
.cfg-badge{flex:none;font-size:10px;font-weight:600;letter-spacing:.4px;text-transform:uppercase;
  padding:1px 7px;border-radius:99px;background:var(--surface2);color:var(--muted)}
.cfg-badge.user{background:var(--accent-soft);color:var(--accent)}
.cfg-grp{flex:none;font-size:10.5px;color:var(--muted)}

/* ---------- constraints strip ---------- */
#constraintStrip{flex:none;display:none;gap:6px;align-items:center;padding:7px 10px;
  overflow-x:auto;background:var(--surface);border-top:1px solid var(--line)}
#constraintStrip.show{display:flex}
#constraintStrip .cslabel{font-size:11px;font-weight:600;letter-spacing:.5px;
  text-transform:uppercase;color:var(--muted);flex:none;margin-right:2px}
.cchip{flex:none;display:inline-flex;align-items:center;gap:7px;font:11.5px var(--mono);
  padding:4px 9px;border-radius:7px;cursor:pointer;background:var(--surface2);
  border:1px solid var(--line);color:var(--ink);white-space:nowrap}
.cchip:hover{border-color:var(--accent);background:var(--accent-soft)}
.cchip .cx{font-size:12px;color:var(--muted);line-height:1;padding:0 1px}
.cchip .cx:hover{color:var(--err)}
.cchip.addc{color:var(--accent);font-weight:600;border-style:dashed}
#consInput{flex:none;font:11.5px var(--mono);padding:4px 9px;border-radius:7px;
  border:1px solid var(--accent);background:var(--surface);min-width:230px}

/* ---------- bottom panel ---------- */
#bottomPanel{flex:none;height:212px;display:flex;flex-direction:column;
  background:var(--surface);border-top:1px solid var(--line)}
.tabs{flex:none;display:flex;gap:2px;padding:6px 10px 0;border-bottom:1px solid var(--line)}
.tab{padding:7px 13px 8px;font-size:12.5px;font-weight:500;color:var(--muted);
  border-radius:8px 8px 0 0;display:flex;align-items:center;gap:7px}
.tab:hover{color:var(--ink)}
.tab[aria-selected="true"]{color:var(--ink);font-weight:600;background:var(--bg);
  border:1px solid var(--line);border-bottom:1px solid var(--bg);margin-bottom:-1px}
.tabbadge{font-size:10.5px;font-weight:700;padding:1px 7px;border-radius:99px;
  background:var(--surface2);color:var(--muted)}
.tabbadge.err{background:var(--err-soft);color:var(--err)}
.tabbadge.warn{background:var(--warn-soft);color:var(--warn)}
.tabbadge.ok{background:var(--ok-soft);color:var(--ok)}
.panel{flex:1;overflow:auto;display:none;background:var(--bg)}
.panel.show{display:block}

#problemsList{padding:6px 4px}
.prob{display:flex;gap:9px;align-items:baseline;padding:5px 12px;border-radius:7px;
  cursor:pointer;font-size:12.5px}
.prob:hover{background:var(--accent-soft)}
.prob .sev{flex:none;width:8px;height:8px;border-radius:99px;align-self:center}
.prob.err .sev{background:var(--err)}
.prob.warn .sev{background:var(--warn)}
.prob.info .sev{background:var(--accent)}
.prob .pl{flex:none;font:11.5px var(--mono);color:var(--muted);min-width:52px}
.allgood{display:flex;align-items:center;gap:9px;padding:16px;color:var(--ok);font-weight:600}

#analysisPanel .apad{padding:12px 14px;display:flex;flex-direction:column;gap:12px}
.statrow{display:flex;gap:10px;flex-wrap:wrap}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:10px;
  padding:8px 14px;min-width:110px}
.stat .sv{font-size:20px;font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:-.3px}
.stat .sv.ok{color:var(--ok)} .stat .sv.err{color:var(--err)}
.stat .sk{font-size:11px;color:var(--muted);margin-top:1px}
.alist{display:flex;flex-direction:column;gap:8px}
.alist .arow{display:flex;gap:8px;align-items:baseline;flex-wrap:wrap}
.alist .ak{font-size:11px;font-weight:600;letter-spacing:.5px;text-transform:uppercase;
  color:var(--muted);min-width:110px}
.fchip{font:11.5px var(--mono);padding:3px 9px;border-radius:7px;cursor:pointer;border:1px solid var(--line)}
.fchip.dead{background:var(--err-soft);color:var(--err);border-color:transparent}
.fchip.fopt{background:var(--warn-soft);color:var(--warn);border-color:transparent}
.fchip.core{background:var(--surface);color:var(--ink)}
.fchip:hover{border-color:var(--accent)}
.anote{color:var(--muted);font-size:12px;max-width:70ch}

#cheatPanel .cpad{padding:14px;display:grid;gap:14px;
  grid-template-columns:repeat(auto-fit,minmax(250px,1fr));align-items:start}
.cheat h3{margin:0 0 6px;font-size:12px;letter-spacing:.5px;text-transform:uppercase;color:var(--muted)}
.cheat pre{margin:0;background:var(--surface);border:1px solid var(--line);border-radius:9px;
  padding:9px 11px;font:12px/1.6 var(--mono);overflow-x:auto}
.cheat p{margin:6px 0 0;font-size:12px;color:var(--muted);max-width:60ch}
.cheat code{font:11.5px var(--mono);background:var(--surface2);border-radius:4px;padding:1px 5px}
.cheat a{color:var(--accent)}

/* ---------- large-model notice ---------- */
#bigNotice{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  text-align:center;padding:20px}
#bigNotice[hidden]{display:none}
#bigNotice p{color:var(--muted);font-size:13px;max-width:46ch;margin:0 0 10px}

/* ---------- UVLHub model browser ---------- */
#hubModal{position:fixed;inset:0;z-index:60;background:rgba(20,18,32,.45);
  display:flex;align-items:center;justify-content:center;padding:24px}
#hubModal[hidden]{display:none}
.hub-box{display:flex;flex-direction:column;width:min(760px,100%);height:min(78vh,640px);
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow-lg);overflow:hidden}
.hub-head{flex:none;display:flex;align-items:center;gap:10px;padding:12px 14px;
  border-bottom:1px solid var(--line)}
.hub-head b{font-size:14px}
.hub-count{color:var(--muted);font-size:12px;font-variant-numeric:tabular-nums}
.hub-close{width:30px;height:30px;border-radius:8px;font-size:14px;color:var(--muted)}
.hub-close:hover{background:var(--surface2);color:var(--ink)}
.hub-filters{flex:none;display:flex;gap:8px;padding:10px 14px;border-bottom:1px solid var(--line);
  flex-wrap:wrap}
.hub-filters input[type=search]{flex:1 1 180px;min-width:0;padding:6px 10px;
  border:1px solid var(--line);border-radius:8px;background:var(--bg);font-size:13px}
.hub-filters select{flex:0 1 auto;max-width:46%;padding:6px 8px;border:1px solid var(--line);
  border-radius:8px;background:var(--surface2);font-size:12px}
.hub-list{flex:1;overflow-y:auto;padding:6px}
.hub-msg{color:var(--muted);padding:22px 16px;font-size:13px;max-width:60ch}
.hub-row{display:flex;align-items:baseline;gap:10px;width:100%;text-align:left;
  padding:7px 10px;border-radius:8px;font-size:12.5px}
.hub-row:hover{background:var(--accent-soft)}
.hub-row .hn{font-family:var(--mono);font-size:12px;white-space:nowrap;overflow:hidden;
  text-overflow:ellipsis;max-width:46%}
.hub-row .hd{color:var(--muted);font-size:11.5px;white-space:nowrap;overflow:hidden;
  text-overflow:ellipsis;flex:1;min-width:0}
.hub-row .hstat{flex:none;font-size:11px;color:var(--muted);font-variant-numeric:tabular-nums;
  background:var(--surface2);border-radius:99px;padding:1px 8px;white-space:nowrap}
.hub-more{display:block;margin:8px auto;padding:6px 16px;border:1px solid var(--line);
  border-radius:8px;font-size:12px;color:var(--accent)}
.hub-more:hover{background:var(--accent-soft)}
.hub-foot{flex:none;padding:9px 14px;border-top:1px solid var(--line);color:var(--muted);
  font-size:11.5px}
.hub-foot a{color:var(--accent)}
.hub-foot code{font:11px var(--mono);background:var(--surface2);border-radius:4px;padding:1px 4px}
#editorPane.droptarget{outline:2px dashed var(--accent);outline-offset:-4px}

/* ---------- mobile navigation (phones) ---------- */
#mobileNav{display:none;flex:none;align-items:stretch;gap:4px;
  background:var(--surface);border-top:1px solid var(--line);
  padding:4px 6px calc(4px + env(safe-area-inset-bottom, 0px))}
#mobileNav button{flex:1;display:flex;flex-direction:column;align-items:center;gap:1px;
  padding:5px 2px;border-radius:9px;font-size:10.5px;font-weight:600;color:var(--muted)}
#mobileNav button .mi{font-size:17px;line-height:1.15}
#mobileNav button.on{color:var(--accent);background:var(--accent-soft)}

/* ---------- phone layout (single view + bottom nav) ---------- */
@media (max-width:700px){
  :root{--elh:22px; --efs:16px}   /* ≥16px prevents the iOS focus auto-zoom */
  header{padding:0 8px;gap:8px;height:44px}
  .brand svg{display:none}
  header select{flex:0 1 auto;max-width:132px;min-width:84px}
  .pill{flex:none;display:inline-block;padding:3px 9px;font-size:11px;line-height:1.7;
    max-width:36vw;overflow:hidden;text-overflow:ellipsis}
  main{position:relative;flex-direction:row}
  #splitter{display:none}
  #editorPane,#rightPane{position:absolute;inset:0;width:100%;min-width:0;
    display:none;border-right:none;border-bottom:none;flex:none !important}
  body.m-editor #editorPane{display:flex}
  body.m-diagram #rightPane,body.m-config #rightPane{display:flex}
  #viewBar{display:none}
  #gutter{width:40px}
  #mobileNav{display:flex}
  #bottomPanel{height:auto}
  #bottomPanel.expanded{height:46vh}
  #bottomPanel:not(.expanded) .panel{display:none}
  .tab{padding:8px 11px 9px}
  .cmenu{width:min(250px, calc(100vw - 20px))}
  #legend{font-size:10.5px;gap:9px;padding:5px 9px;bottom:8px;left:8px}
  .dtools{top:8px;right:8px}
  .cfg-head{padding:8px 10px;gap:10px}
  #cheatPanel .cpad{grid-template-columns:1fr}
  .hub-label{display:none}
  #hubModal{padding:0}
  .hub-box{width:100%;height:100%;border-radius:0;border:none}
  .hub-row .hn{max-width:60%}
  .hub-row .hd{display:none}
}