:root{
  --ink:#111;
  --grey:#6b6b6b;
  --faint:#dedede;
  --sel:#4a90d9;
  --mono:"IBM Plex Mono","SF Mono","Cascadia Mono",Consolas,monospace;
  --ease:.14s ease;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;overflow:hidden}
body{font-family:var(--mono);color:var(--ink);display:flex;background:#fff}

#canvasWrap{flex:1;position:relative;background:#fff;user-select:none;-webkit-user-select:none}
#canvas{width:100%;height:100%;display:block;touch-action:none;cursor:default}
#canvas.panning{cursor:grabbing}
#emptyHint{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  color:#9a9a9a;font-size:0.845rem;letter-spacing:0.08em;pointer-events:none;
  text-align:center;line-height:2;
}
#gestureHint{
  position:absolute;left:0;right:0;bottom:10px;text-align:center;
  color:#9a9a9a;font-size:0.72rem;letter-spacing:0.06em;pointer-events:none;
}
#zoomBar{position:absolute;right:12px;top:10px;display:flex;gap:4px;align-items:center}
#zoomBar button,#zoomBadge{
  font-family:var(--mono);font-size:0.725rem;color:#8a8a8a;cursor:pointer;user-select:none;
  padding:3px 7px;border:1px solid var(--faint);background:#fff;line-height:1.2;
}
#zoomBar button{font-size:1rem;padding:0 10px;height:30px}
#zoomBadge{min-width:52px;text-align:center;height:30px;display:flex;align-items:center;justify-content:center}
#zoomBar button:hover,#zoomBadge:hover{color:var(--ink);border-color:var(--ink)}
#libBar{
  position:absolute;top:10px;left:12px;display:flex;gap:6px;align-items:center;
}
#libBar select,#libBar button{
  font-family:var(--mono);font-size:0.725rem;border:1px solid var(--faint);
  background:#fff;color:var(--grey);padding:4px 8px;cursor:pointer;
}
#libBar select{max-width:220px;color:var(--ink);padding-right:4px}
#libBar select:hover,#libBar button:hover:not(:disabled){border-color:var(--ink);color:var(--ink)}
#libBar button:disabled{color:#9a9a9a;cursor:default}
#saveBtn.saved{border-color:var(--ink);color:var(--ink)}

#console{
  width:var(--console-w,300px);flex:none;min-width:0;overflow:hidden;
  display:flex;flex-direction:column;background:#fff;
}
body.consoleCollapsed #console{width:0}
#splitter{
  flex:none;width:10px;cursor:col-resize;user-select:none;touch-action:none;
  border-left:1px solid var(--faint);background:#fff;
  display:flex;align-items:center;justify-content:center;
}
#splitter:hover{border-left-color:var(--ink);background:#fafafa}
#splitTab{font-size:0.72rem;color:#8a8a8a;pointer-events:none}
#splitter:hover #splitTab{color:var(--ink)}
#saveRow{
  display:flex;flex-direction:column;gap:8px;
  padding:10px 16px;border-bottom:1px solid var(--faint);
}
#saveRow .saveBtns{display:flex;gap:6px}
#canvasName{
  width:100%;border:none;border-bottom:1px solid var(--faint);font-family:var(--mono);font-size:0.905rem;outline:none;
  color:var(--ink);background:transparent;min-width:0;padding:3px 0;
}
#canvasName:focus{border-bottom-color:var(--ink)}
#canvasName::placeholder{color:#9a9a9a}
#saveRow button{
  font-family:var(--mono);font-size:0.725rem;border:1px solid var(--faint);
  background:#fff;color:var(--grey);padding:4px 8px;cursor:pointer;
}
#saveRow button:hover{border-color:var(--ink);color:var(--ink)}

#steps{padding:18px 16px;flex:1;overflow-y:auto}
.panel{display:none}
.panel.on{display:block}
.panel>label{
  display:block;font-size:0.725rem;letter-spacing:0.14em;color:var(--grey);
  text-transform:uppercase;margin-bottom:10px;
}
.panel input[type=text]{
  width:100%;border:none;border-bottom:1px solid var(--ink);
  font-family:var(--mono);font-size:0.975rem;padding:4px 0;outline:none;
  background:transparent;
}
.panel input[type=text]::placeholder{color:#9a9a9a}
.err{font-size:0.745rem;color:#c0392b;margin-top:6px;min-height:0.9em}
.note{font-size:0.745rem;color:#8a8a8a;margin-top:8px;line-height:1.6}

.spec{
  display:flex;align-items:center;gap:10px;
  margin-top:10px;padding:8px;border:1px solid var(--faint);
}
.spec .pv{flex:0 0 44px;height:44px;display:flex;align-items:center;justify-content:center}
.spec .fields{flex:1;display:flex;flex-direction:column;gap:5px}
.spec .frow{display:flex;align-items:baseline;justify-content:space-between;gap:6px}
.spec .frow span{font-size:0.72rem;letter-spacing:0.1em;color:var(--grey);text-transform:uppercase}
.spec input[type=number]{
  width:64px;border:none;border-bottom:1px solid var(--faint);
  font-family:var(--mono);font-size:0.905rem;text-align:right;outline:none;
  background:transparent;color:var(--ink);
}
.spec input[type=number]:focus{border-bottom-color:var(--ink)}
.seg{display:flex;border:1px solid var(--faint)}
.seg button{
  flex:1;font-family:var(--mono);font-size:0.72rem;padding:6px 2px;
  border:none;background:#fff;color:var(--grey);cursor:pointer;letter-spacing:0.05em;
  line-height:1.5;
}
.seg button.on{background:var(--ink);color:#fff}

.fn{margin-top:16px;padding-top:12px;border-top:1px dashed var(--faint)}
.fn .fnlabel{font-size:0.72rem;letter-spacing:0.12em;color:var(--grey);text-transform:uppercase;margin-bottom:8px}
.fnrow{display:flex;align-items:center;gap:6px}
.fnrow input[type=number]{
  width:56px;border:none;border-bottom:1px solid var(--faint);
  font-family:var(--mono);font-size:0.875rem;text-align:right;outline:none;background:transparent;
}
.fnrow button{
  font-family:var(--mono);font-size:0.725rem;border:1px solid var(--ink);
  background:#fff;padding:4px 8px;cursor:pointer;
}
.fnrow button:hover{background:var(--ink);color:#fff}
.fn input[type=text]{font-size:0.845rem !important}

.memberHead{
  font-size:0.805rem;font-weight:700;margin-top:16px;
  border-bottom:1px solid var(--faint);padding-bottom:4px;
}
.memberHead:first-of-type{margin-top:10px}

.steprow{display:flex;gap:8px;margin-top:16px}
.steprow button{
  font-family:var(--mono);font-size:0.745rem;letter-spacing:0.08em;
  border:1px solid var(--ink);background:#fff;color:var(--ink);
  padding:9px 10px;min-height:34px;cursor:pointer;flex:1;
}
.steprow button:hover:not(:disabled){background:var(--ink);color:#fff}
.steprow button:disabled{border-color:var(--faint);color:#9a9a9a;cursor:not-allowed}
.steprow button.ghost{border-color:var(--faint);color:var(--grey)}
.steprow button.ghost:hover{background:#fff;color:var(--ink);border-color:var(--ink)}

#tray{
  border-top:1px solid var(--faint);padding:12px;min-height:100px;max-height:190px;overflow-y:auto;
  display:flex;flex-wrap:wrap;gap:10px;align-content:flex-start;
}
#trayLabel{font-size:0.72rem;letter-spacing:0.14em;color:#9a9a9a;text-transform:uppercase;width:100%}
.trayItem{
  width:92px;height:92px;border:1px solid var(--faint);
  display:flex;align-items:center;justify-content:center;
  cursor:grab;background:#fff;position:relative;
}
.trayItem.arriving{opacity:0}
.trayItem.landed{animation:trayPop .28s ease-out}
@keyframes trayPop{
  0%{transform:scale(0.7)}
  60%{transform:scale(1.08)}
  100%{transform:scale(1)}
}
#flyGhost{
  position:fixed;z-index:20;pointer-events:none;
  display:flex;align-items:center;justify-content:center;
  transition:all .45s cubic-bezier(.3,.7,.3,1);
}
.trayItem:hover{border-color:var(--ink)}
.trayItem svg{pointer-events:none}
.trayItem .x{
  position:absolute;top:-7px;right:-7px;width:14px;height:14px;
  border:1px solid var(--faint);background:#fff;color:var(--grey);
  font-size:9px;line-height:12px;text-align:center;cursor:pointer;display:none;
}
.trayItem:hover .x{display:block}

#ghost{position:fixed;pointer-events:none;opacity:0.6;z-index:10;display:none}

/* ---- screen calibration overlay ---- */
#calib[hidden]{display:none}
#calib{position:absolute;inset:0;background:rgba(255,255,255,0.96);z-index:30;display:flex;align-items:center;justify-content:center}
#calibBox{width:min(92%,900px);display:flex;flex-direction:column;gap:12px}
#calibBox>label{font-size:0.725rem;letter-spacing:0.14em;color:var(--grey);text-transform:uppercase}
#calibBox .note{max-width:62ch;margin-top:0}
#calibStage{height:min(56vh,480px);display:flex;align-items:center;justify-content:flex-start;padding-left:20px}
#calibCard{
  position:relative;border:2px solid var(--ink);border-radius:3.18mm;box-sizing:border-box;
  display:flex;align-items:flex-end;justify-content:flex-start;padding:10px;
  font-size:0.725rem;color:var(--grey);letter-spacing:0.08em;background:#fff;
}
#calibHandle{
  position:absolute;top:0;bottom:0;right:-9px;width:18px;cursor:ew-resize;
}
#calibHandle::after{
  content:"";position:absolute;top:50%;left:6px;width:6px;height:28px;margin-top:-14px;
  background:#fff;border:1px solid var(--ink);
}
#calibRange{width:100%;accent-color:var(--ink)}
#calibBox .steprow{margin-top:4px;max-width:320px}
#calibBox .steprow button{font-family:var(--mono);font-size:0.745rem;letter-spacing:0.08em;border:1px solid var(--ink);background:#fff;color:var(--ink);padding:7px 10px;cursor:pointer;flex:1}
#calibBox .steprow button:hover{background:var(--ink);color:#fff}
#calibBox .steprow button.ghost{border-color:var(--faint);color:var(--grey)}
#calibBox .steprow button.ghost:hover{background:#fff;color:var(--ink);border-color:var(--ink)}
.mmReadout{font-size:0.745rem;color:var(--grey);white-space:nowrap}
.qRows{display:flex;flex-direction:column;gap:6px;margin-top:12px}
.qRows .fnrow{justify-content:space-between}
.qRows .lbl,.spec .frow.mmRow span:first-child{font-size:0.72rem;letter-spacing:0.1em;color:var(--grey);text-transform:uppercase}
.qRows .unit{font-size:0.825rem;color:var(--grey)}
.qRows .lbl{flex:1}
.qRows .mmRow,.spec .frow.mmRow{flex-direction:column;align-items:flex-start;gap:2px}
.qRows .mmRow .mmReadout,.spec .frow.mmRow .mmReadout{white-space:normal;line-height:1.5}
.mmReadout.uncal{color:#c9a227}

/* ---- sub-shape nudge: the next stage after naming a shape ---- */
@keyframes nudgeLine{0%,100%{border-bottom-color:var(--ink)}50%{border-bottom-color:#d9534f}}
@keyframes nudgeText{0%,100%{color:#d9534f;opacity:1}50%{color:#d9534f;opacity:0.35}}
#anchorInput.nudge{animation:nudgeLine 1.1s ease-in-out infinite}
#anchorInput.nudge::placeholder{animation:nudgeText 1.1s ease-in-out infinite}
@media (prefers-reduced-motion:reduce){
  #anchorInput.nudge{animation:none;border-bottom-color:#d9534f}
  #anchorInput.nudge::placeholder{animation:none;color:#d9534f}
}

/* ---- experiments: chips, strip, lens ---- */
.chip{
  font-family:var(--mono);font-size:0.72rem;letter-spacing:0.04em;line-height:1;
  border:1px solid var(--faint);background:#fff;color:var(--grey);padding:6px 9px;cursor:pointer;white-space:nowrap;
}
.chip:hover{border-color:var(--ink);color:var(--ink)}
.chip.on{background:var(--ink);border-color:var(--ink);color:#fff}
.chip.add{color:var(--grey);border-style:dashed}
.chip.add:hover{color:var(--ink)}
.expChips{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-top:10px}
.expChips .lbl{font-size:0.7rem;letter-spacing:0.1em;color:var(--grey);text-transform:uppercase;margin-right:2px}
#expBar{
  display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none;
  padding:8px 16px;border-top:1px solid var(--faint);min-height:44px;
}
#expBar::-webkit-scrollbar{display:none}
#expBar.empty .chip.add{border-style:solid}
.expCode{font-size:0.8rem;font-weight:700;letter-spacing:0.08em;padding:0 0 6px;color:var(--ink)}
.expRow{display:flex;align-items:center;gap:8px;font-size:0.8rem;padding:6px 0;border-bottom:1px solid var(--faint)}
.expRow input{accent-color:var(--ink);margin:0;cursor:pointer}
.expRow .n{color:var(--grey);font-size:0.72rem;flex:0 0 1.4em}
.expRow .t{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;cursor:pointer}
.expRow .t:hover{text-decoration:underline}
.expTools{display:flex;justify-content:space-between;align-items:center;margin:4px 0 2px}
.expTools button{font-family:var(--mono);font-size:0.68rem;letter-spacing:0.08em;border:1px solid var(--faint);background:#fff;color:var(--grey);padding:3px 8px;cursor:pointer}
.expTools button:hover{border-color:var(--ink);color:var(--ink)}
label.check{display:flex;align-items:center;gap:6px;font-size:0.775rem;color:var(--ink);cursor:pointer}
label.check input{accent-color:var(--ink)}
#canvas .lensOut{opacity:0.28}
#canvas tspan[data-toggle-q]{cursor:pointer}
#run[hidden]{display:none}
#run{
  position:fixed;inset:0;background:#fff;z-index:50;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:28px;
}
#runCount{position:absolute;top:12px;left:16px;font-size:0.725rem;color:#8a8a8a;letter-spacing:0.1em}
#runQuit{
  position:absolute;top:10px;right:12px;font-family:var(--mono);font-size:0.725rem;
  border:1px solid var(--faint);background:#fff;color:#8a8a8a;padding:4px 8px;cursor:pointer;
}
#runQuit:hover{color:var(--ink);border-color:var(--ink)}
#runPrompt{font-size:1.35rem;font-weight:700;letter-spacing:0.02em;color:var(--ink)}
#runStage svg{display:block}
#runChoice{display:flex;gap:24px}
#runChoice button{
  font-family:var(--mono);font-size:1.4rem;font-weight:700;width:96px;height:68px;
  border:1px solid var(--ink);background:#fff;color:var(--ink);cursor:pointer;
}
#runChoice button:hover{background:var(--ink);color:#fff}
#runEnd{display:flex;flex-direction:column;gap:14px;max-width:min(92vw,720px);max-height:80vh;overflow:auto}
#runEnd[hidden]{display:none}
#runEnd>label{font-size:0.725rem;letter-spacing:0.14em;color:var(--grey);text-transform:uppercase}
#runTable{border-collapse:collapse;font-size:0.805rem;font-variant-numeric:tabular-nums}
#runTable th,#runTable td{text-align:left;padding:4px 10px;border-bottom:1px solid var(--faint)}
#runTable th{font-size:0.72rem;letter-spacing:0.1em;color:var(--grey);text-transform:uppercase;font-weight:400}
#runEnd .steprow button{font-family:var(--mono);font-size:0.745rem;letter-spacing:0.08em;border:1px solid var(--ink);background:#fff;color:var(--ink);padding:7px 10px;cursor:pointer;flex:1}
#runEnd .steprow button:hover{background:var(--ink);color:#fff}
#runEnd .steprow button.ghost{border-color:var(--faint);color:var(--grey)}
#runEnd .steprow button.ghost:hover{background:#fff;color:var(--ink);border-color:var(--ink)}

/* ---- dimension line ---- */
@keyframes dimIn{from{opacity:0}to{opacity:1}}
.dimHover{animation:dimIn .25s ease-out}
label.check.mini{font-size:0.72rem;color:var(--grey);letter-spacing:0.05em;margin-top:2px}
label.check.mini:hover{color:var(--ink)}
@media (prefers-reduced-motion:reduce){.dimHover{animation:none}}

/* ---- settings (bottom-left) ---- */
#settings{position:absolute;left:12px;bottom:10px;display:flex;flex-direction:column;align-items:flex-start;gap:6px}
#settingsBtn{
  font-family:var(--mono);font-size:1rem;line-height:1;width:32px;height:30px;
  border:1px solid var(--faint);background:#fff;color:#8a8a8a;cursor:pointer;
}
#settingsBtn:hover,#settingsBtn.on{color:var(--ink);border-color:var(--ink)}
#settingsMenu[hidden]{display:none}
#settingsMenu{
  display:flex;flex-direction:column;gap:6px;min-width:240px;max-width:320px;
  padding:10px 12px;border:1px solid var(--faint);background:#fff;box-shadow:0 4px 18px rgba(0,0,0,0.06);
}
#settingsMenu .menuHead{font-size:0.72rem;letter-spacing:0.14em;color:var(--grey);text-transform:uppercase}
#settingsMenu .note{margin-top:0}
#buildId{font-size:0.72rem;color:#9a9a9a;letter-spacing:0.1em}
#settingsMenu button{
  font-family:var(--mono);font-size:0.745rem;letter-spacing:0.06em;text-align:left;
  border:1px solid var(--faint);background:#fff;color:var(--ink);padding:6px 8px;cursor:pointer;
}
#settingsMenu button:hover{border-color:var(--ink)}

/* ---- walkthrough: a centered pop-up over the page ---- */
#tour[hidden]{display:none}
#tour{
  position:fixed;inset:0;z-index:40;background:rgba(255,255,255,0.62);
  display:flex;align-items:center;justify-content:center;padding:20px;
}
#tourCard{
  width:min(440px,100%);background:#fff;border:1px solid var(--ink);
  padding:18px 22px 16px;box-shadow:0 14px 40px rgba(0,0,0,0.12);animation:tourIn .25s ease-out;
}
@keyframes tourIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
#tourCard .tourHead{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:12px}
#tourCard .tourKicker{font-size:0.72rem;letter-spacing:0.14em;color:var(--grey);text-transform:uppercase}
#tourCount{font-size:0.72rem;color:#8a8a8a;letter-spacing:0.1em}
#tourTitle{font-size:1.025rem;font-weight:700;letter-spacing:0.01em;margin:0 0 8px;text-wrap:balance}
#tourText{font-size:0.825rem;line-height:1.7;color:#333;margin:0 0 18px;max-width:60ch}
#tourCard .tourFoot{display:flex;justify-content:space-between;align-items:center;gap:12px}
#tourDots{display:flex;gap:5px}
#tourDots span{width:6px;height:6px;border:1px solid var(--ink);background:#fff;border-radius:50%}
#tourDots span.on{background:var(--ink)}
#tourCard .tourRow{display:flex;gap:6px}
#tourCard button{
  font-family:var(--mono);font-size:0.745rem;letter-spacing:0.08em;border:1px solid var(--ink);
  background:#fff;color:var(--ink);padding:6px 12px;cursor:pointer;
}
#tourCard button:hover{background:var(--ink);color:#fff}
#tourCard button.ghost{border-color:var(--faint);color:var(--grey)}
#tourCard button.ghost:hover{background:#fff;color:var(--ink);border-color:var(--ink)}
#tourCard button:disabled{visibility:hidden}
.tourTarget{outline:1.5px dashed #4a90d9;outline-offset:5px}
@media (prefers-reduced-motion:reduce){#tourCard{animation:none}}

/* ---- upgrade: keyboard focus, cursors, dirty dot, toast ---- */
:focus-visible{outline:2px solid var(--sel);outline-offset:2px}
#canvas g.item{cursor:move}
#saveBtn{position:relative}
#saveBtn.dirty::after{content:"";position:absolute;top:-4px;right:-4px;width:7px;height:7px;border-radius:50%;background:var(--sel)}
#toast[hidden]{display:none}
#toast{
  position:fixed;left:50%;bottom:34px;transform:translateX(-50%);z-index:45;
  font-family:var(--mono);font-size:0.745rem;letter-spacing:0.06em;color:#fff;background:var(--ink);
  padding:7px 12px;pointer-events:none;animation:toastIn .2s ease-out;
}
@keyframes toastIn{from{opacity:0;transform:translate(-50%,4px)}to{opacity:1;transform:translateX(-50%)}}
#settingsMenu .menuRow{display:flex;align-items:baseline;gap:6px;font-size:0.725rem;color:var(--ink);letter-spacing:0.04em}
#settingsMenu .menuRow span{flex:1;color:var(--grey)}
#settingsMenu .menuRow input{width:52px;border:none;border-bottom:1px solid var(--faint);font-family:var(--mono);font-size:0.805rem;text-align:right;outline:none;background:transparent}
#settingsMenu .menuRow input:focus{border-bottom-color:var(--ink)}
#keysNote{font-size:0.72rem;color:#9a9a9a;letter-spacing:0.06em;margin-top:2px}
.titleRow{display:flex;align-items:flex-end;gap:6px}
.titleRow input{flex:1;min-width:0}
#qTitleRegen{border:1px solid var(--faint);background:#fff;color:var(--grey);font-family:var(--mono);font-size:0.925rem;line-height:1;padding:4px 7px;cursor:pointer}
#qTitleRegen:hover{border-color:var(--ink);color:var(--ink)}
.checks{display:flex;flex-direction:column;gap:5px}
.trayItem.inUse{border-color:#c0392b}
.trayItem.inUse .x{color:#c0392b;border-color:#c0392b;display:block}
#runStart{display:flex;flex-direction:column;gap:14px;max-width:min(92vw,560px)}
#runStart[hidden]{display:none}
#runStart>label{font-size:0.725rem;letter-spacing:0.14em;color:var(--grey);text-transform:uppercase}
#runStart p{font-size:0.905rem;line-height:1.7;color:#333}
#runStart .steprow{max-width:260px}
#runStart .steprow button{font-family:var(--mono);font-size:0.745rem;letter-spacing:0.08em;border:1px solid var(--ink);background:#fff;color:var(--ink);padding:8px 12px;cursor:pointer;flex:1}
#runStart .steprow button:hover{background:var(--ink);color:#fff}
#runFix[hidden]{display:none}
#runFix{font-size:2.325rem;font-weight:400;color:var(--ink);line-height:1}
#runSummary{margin-top:0;color:var(--grey)}

/* ---- finesse ---- */
button{transition:border-color var(--ease),color var(--ease),background var(--ease),transform .08s ease}
button:active:not(:disabled){transform:translateY(0.5px)}
#steps,#tray{scrollbar-width:thin;scrollbar-color:#ddd transparent}
#steps::-webkit-scrollbar,#tray::-webkit-scrollbar{width:6px}
#steps::-webkit-scrollbar-thumb,#tray::-webkit-scrollbar-thumb{background:#ddd}
.panel>label{margin-bottom:12px}
.spec{transition:border-color var(--ease)}
.spec:focus-within{border-color:#cfcfcf}
.trayItem{transition:border-color var(--ease),box-shadow var(--ease)}
.trayItem:hover{box-shadow:0 2px 10px rgba(0,0,0,0.05)}
#libBar select,#libBar button,#zoomBar button,#zoomBadge,#saveRow button,#settingsBtn{height:30px;line-height:1}
#libBar select{padding-top:0;padding-bottom:0}
#emptyHint{max-width:34ch;line-height:1.8}
.steprow button,#calibBox .steprow button,#runEnd .steprow button,#runStart .steprow button,#tourCard button{letter-spacing:0.08em}
.note{color:#6f6f6f}
.err:empty{display:none}
.seg button{transition:background var(--ease),color var(--ease)}
#expBar{transition:background var(--ease),color var(--ease)}
#runChoice button{transition:background var(--ease),color var(--ease),transform .08s ease}
#runChoice button:active{transform:scale(0.97)}
#runPrompt{font-weight:500}

/* ---- newer build available ---- */
#updateNote[hidden]{display:none}
#updateNote{
  position:fixed;left:50%;bottom:34px;transform:translateX(-50%);z-index:46;
  font-family:var(--mono);font-size:0.745rem;letter-spacing:0.06em;color:#fff;background:var(--ink);
  border:1px solid var(--ink);padding:7px 12px;cursor:pointer;animation:toastIn .2s ease-out;
}
#updateNote:hover{background:#fff;color:var(--ink)}

/* ---- text size (⚙ settings): everything in rem scales, stimuli do not ---- */
html[data-text="large"]{font-size:18px}
html[data-text="larger"]{font-size:20px}
#settingsMenu .seg{margin-top:2px}
#settingsMenu .seg button{font-size:0.72rem;padding:6px 2px}
.panel input[type=text]{font-size:1rem}
.trayItem .x{width:18px;height:18px;font-size:12px;line-height:16px;top:-9px;right:-9px}

/* ---- result downloads ---- */
.fnrow button.dl{font-family:var(--mono);font-size:0.72rem;border:1px solid var(--faint);background:#fff;color:var(--ink);padding:6px 10px;cursor:pointer}
.fnrow button.dl:hover:not(:disabled){border-color:var(--ink)}
.fnrow button.dl:disabled{color:#9a9a9a;cursor:not-allowed}

/* ---- dialogs (online & AI, publish, describe) ---- */
.modal[hidden]{display:none}
.modal{
  position:fixed;inset:0;z-index:40;background:rgba(255,255,255,0.62);
  display:flex;align-items:center;justify-content:center;padding:20px;
}
.modalCard{
  width:min(480px,100%);max-height:92vh;overflow:auto;background:#fff;border:1px solid var(--ink);
  padding:18px 22px 16px;box-shadow:0 14px 40px rgba(0,0,0,0.12);animation:tourIn .25s ease-out;
  display:flex;flex-direction:column;gap:10px;
}
.modalCard.wide{width:min(560px,100%)}
.modalHead{display:flex;justify-content:space-between;align-items:baseline;gap:12px}
.kicker{font-size:0.72rem;letter-spacing:0.14em;color:var(--grey);text-transform:uppercase}
.modalCard h2{font-size:0.95rem;font-weight:700;letter-spacing:0.01em;margin:6px 0 0}
.modalText{font-size:0.8rem;line-height:1.65;color:#333;margin:0;white-space:pre-line}
.modalText code,.modalCard label code{font-size:0.75rem;background:#f3f3f3;padding:1px 4px}
.modalCard .x{border:1px solid var(--faint);background:#fff;color:var(--grey);font-family:var(--mono);font-size:1rem;line-height:1;width:26px;height:26px;cursor:pointer;align-self:center}
.modalCard .x:hover{border-color:var(--ink);color:var(--ink)}
.field{display:flex;flex-direction:column;gap:3px}
.field>span{font-size:0.7rem;letter-spacing:0.1em;color:var(--grey);text-transform:uppercase}
.field input,.field textarea,#describeText{
  width:100%;border:none;border-bottom:1px solid var(--faint);font-family:var(--mono);font-size:0.85rem;padding:4px 0;outline:none;background:transparent;color:var(--ink);
}
.field textarea,#describeText{border:1px solid var(--faint);padding:8px;line-height:1.55;resize:vertical}
.field input:focus,.field textarea:focus,#describeText:focus{border-color:var(--ink)}
.fieldRow{display:flex;gap:14px}
.fieldRow .field{flex:1;min-width:0}
.modalRow{display:flex;align-items:center;justify-content:flex-end;gap:8px;margin-top:4px}
.modalRow .note{flex:1;margin:0;text-align:left}
.modalRow button{
  font-family:var(--mono);font-size:0.745rem;letter-spacing:0.08em;border:1px solid var(--ink);
  background:#fff;color:var(--ink);padding:7px 12px;cursor:pointer;
}
.modalRow button:hover:not(:disabled){background:var(--ink);color:#fff}
.modalRow button:disabled{border-color:var(--faint);color:#9a9a9a;cursor:not-allowed}
.modalRow button.ghost{border-color:var(--faint);color:var(--grey)}
.modalRow button.ghost:hover:not(:disabled){background:#fff;color:var(--ink);border-color:var(--ink)}
.modalCard label.check{align-items:flex-start;line-height:1.5}
.modalCard label.check input{margin-top:3px}
#describeText::placeholder{color:#9a9a9a}
#describeForm,#describeResult{display:flex;flex-direction:column;gap:8px}
#describeForm[hidden],#describeResult[hidden],#aiKeyField[hidden]{display:none}
@media (prefers-reduced-motion:reduce){.modalCard{animation:none}}

/* ---- participants online (experiment panel) ---- */
.linkRow{display:flex;gap:6px;margin-top:8px}
.linkRow input{flex:1;min-width:0;border:1px solid var(--faint);font-family:var(--mono);font-size:0.72rem;padding:5px 6px;color:var(--grey);outline:none;background:#fafafa}
.linkRow input:focus{border-color:var(--ink);color:var(--ink)}
.linkRow button{font-family:var(--mono);font-size:0.72rem;border:1px solid var(--ink);background:#fff;color:var(--ink);padding:4px 10px;cursor:pointer}
.linkRow button:hover{background:var(--ink);color:#fff}
#onlinePublished[hidden]{display:none}
table.sessions{border-collapse:collapse;font-size:0.72rem;margin-top:8px;width:100%;font-variant-numeric:tabular-nums}
table.sessions th,table.sessions td{text-align:left;padding:3px 6px 3px 0;border-bottom:1px solid var(--faint);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:120px}
table.sessions th{font-size:0.66rem;letter-spacing:0.1em;color:var(--grey);text-transform:uppercase;font-weight:400}
#expBar .chip.ai{border-style:dashed;color:var(--grey);margin-left:auto}
#expBar .chip.ai:hover{color:var(--ink);border-color:var(--ink)}
#expBar .chip.ai::before{content:"✦ ";color:#c9a227}

/* ---- participant mode (?run=<id>): only the run overlay and the calibration card ---- */
body.participant #canvas,body.participant #emptyHint,body.participant #gestureHint,body.participant #zoomBar,
body.participant #settings,body.participant #libBar,body.participant #splitter,body.participant #console,
body.participant #toast,body.participant #updateNote,body.participant #tour{display:none}
body.participant #calib{background:#fff;z-index:60}
body.participantRun #runQuit{display:none}
.runScreen{display:flex;flex-direction:column;gap:14px;max-width:min(92vw,560px)}
.runScreen[hidden]{display:none}
.runScreen>label{font-size:0.725rem;letter-spacing:0.14em;color:var(--grey);text-transform:uppercase}
.runScreen p{font-size:0.905rem;line-height:1.7;color:#333;white-space:pre-line}
.runScreen .steprow{max-width:260px}
.runScreen .steprow button{font-family:var(--mono);font-size:0.745rem;letter-spacing:0.08em;border:1px solid var(--ink);background:#fff;color:var(--ink);padding:8px 12px;cursor:pointer;flex:1}
.runScreen .steprow button:hover{background:var(--ink);color:#fff}
.runScreen .steprow button[hidden]{display:none}
.steprow[hidden]{display:none}
#runInstructions[hidden],#runIntro[hidden]{display:none}

/* ---- texture: density / size / fill with a hold toggle ---- */
.spec .frow button.hold{font-family:var(--mono);font-size:0.62rem;letter-spacing:0.06em;border:1px solid var(--faint);background:#fff;color:var(--grey);padding:1px 5px;margin-left:4px;cursor:pointer;line-height:1.4}
.spec .frow button.hold:hover{border-color:var(--ink);color:var(--ink)}
.spec .frow button.hold.on{background:var(--ink);border-color:var(--ink);color:#fff}
.spec input:disabled{color:#9a9a9a;border-bottom-style:dotted}
.texBox{display:flex;flex-direction:column;gap:5px;margin-top:2px}
.texBox .texNote{margin-top:0;font-size:0.68rem;color:#b07b00}
.texBox .texNote:empty{display:none}
.spec .seg[data-f="arrange"]{margin-top:2px}

#runChoice button[hidden]{display:none}

/* ---- save row: room for pdf / images; stimulus images dialog ---- */
#saveRow .saveBtns{flex-wrap:wrap}
.modalCard input.inlineNum{width:64px;border:none;border-bottom:1px solid var(--faint);font-family:var(--mono);font-size:0.8rem;text-align:right;outline:none;background:transparent;margin:0 4px}
.modalCard input.inlineNum:disabled{color:#9a9a9a;border-bottom-style:dotted}
.modalCard .modalText.note{color:#6f6f6f;font-size:0.72rem}

/* ---- free text on the canvas ---- */
#textEdit{position:absolute;z-index:5;margin:0;padding:2px 4px;border:1px dashed #4a90d9;background:#fff;color:var(--ink);
  font-family:monospace;line-height:1.25;white-space:pre;overflow:hidden;resize:none;outline:none}
#textPanel textarea{width:100%;box-sizing:border-box;font-family:var(--mono);font-size:0.85rem;line-height:1.4;border:1px solid var(--faint);padding:6px 8px;resize:vertical;background:#fff}
#textPanel .frow input{width:64px}

.texBox .seg[data-f="texKind"]{margin:2px 0 6px}

/* ---- continuous rotation: the + next to orient and its box ---- */
.spec .frow button.spinToggle{font-family:var(--mono);font-size:0.75rem;border:1px solid var(--faint);background:#fff;color:var(--grey);width:20px;height:20px;padding:0;margin-left:8px;cursor:pointer;line-height:1}
.spec .frow button.spinToggle:hover{border-color:var(--ink);color:var(--ink)}
.spec .frow button.spinToggle.live{background:var(--ink);border-color:var(--ink);color:#fff}
.spinBox{display:flex;flex-direction:column;gap:5px;margin:2px 0 8px;padding:6px 0 6px 10px;border-left:2px solid var(--faint)}
.spinBox .seg button{font-size:0.72rem}
.spinBox .note{margin:0;font-size:0.68rem}
.spinBox .seg[data-f="spinDir"] button{white-space:nowrap;padding:5px 2px}
.spinBox .seg[data-f="spinScope"]{flex-wrap:wrap}
.spinBox .seg[data-f="spinScope"] button{flex:1 1 45%;white-space:nowrap;padding:5px 2px}
#textPanel .frow{display:flex;align-items:center;gap:8px;font-size:0.8rem;color:var(--grey);letter-spacing:0.08em;text-transform:uppercase}
#textPanel .frow input{width:64px;font-family:var(--mono);font-size:0.9rem;text-align:right;border:none;border-bottom:1px solid var(--faint);outline:none;color:var(--ink)}

.spec .frow button.spinRestart{font-family:var(--mono);font-size:0.66rem;letter-spacing:0.06em;border:1px solid var(--faint);background:#fff;color:var(--grey);padding:2px 8px;margin-left:auto;cursor:pointer;line-height:1.4;white-space:nowrap}
.spec .frow button.spinRestart:hover{border-color:var(--ink);color:var(--ink)}