:root{
  --panel:#f4f3ef; --panel-2:#e9e8e2; --line:#cfd0c8;
  --text:#1d221f; --muted:#6d746f; --field:#ffffff;
  --warn:#b5502e; --ok:#2f7d55;
  --canvas:#0c110f; --grid:rgba(255,255,255,.045);
  --shadow:0 1px 0 rgba(0,0,0,.06);
}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){
  --panel:#151d1a; --panel-2:#1b2521; --line:#2c3b35;
  --text:#dde5e0; --muted:#8b968f; --field:#0f1614;
  --warn:#e07a52; --ok:#5dbd8c; --shadow:0 1px 0 rgba(0,0,0,.4);
}}
:root[data-theme="dark"]{
  --panel:#151d1a; --panel-2:#1b2521; --line:#2c3b35;
  --text:#dde5e0; --muted:#8b968f; --field:#0f1614;
  --warn:#e07a52; --ok:#5dbd8c; --shadow:0 1px 0 rgba(0,0,0,.4);
}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--panel);color:var(--text);
  font-family:"IBM Plex Sans",system-ui,-apple-system,Segoe UI,sans-serif;font-size:14px}
img{max-width:100%}
[hidden]{display:none!important}
h1{font-family:"IBM Plex Sans Condensed","IBM Plex Sans",sans-serif;font-weight:700;font-size:17px;margin:0}
.sub{font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:11px;color:var(--muted);
  letter-spacing:.06em;text-transform:uppercase;margin-top:3px}

.app{display:grid;grid-template-columns:var(--lw,274px) 1fr var(--rw,400px);height:100vh;min-height:560px}
@media (max-width:1180px){ .app{grid-template-columns:1fr var(--rw,400px)} .lpanel{grid-column:1 / -1;max-height:300px} .splitter{display:none} }
@media (max-width:880px){ .app{grid-template-columns:1fr;grid-template-rows:auto minmax(320px,52vh) 1fr;height:auto}
  .lpanel{max-height:none} }
.lpanel{background:var(--panel);border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0;position:relative}
.splitter{position:absolute;top:0;bottom:0;width:7px;cursor:col-resize;z-index:40}
.splitter:hover,.splitter.drag{background:var(--line)}
.lpanel>.splitter{right:-4px} .panel>.splitter{left:-4px}
#vidWin{display:block;width:100%;height:auto;background:#000;border-radius:4px}
.lpanel .pages{overflow-y:auto}
.ctitle{padding:12px 14px 10px;border-bottom:1px solid var(--line);
  font-family:"IBM Plex Sans Condensed","IBM Plex Sans",sans-serif;font-weight:700;font-size:14px}
.pick2{display:grid;grid-template-columns:repeat(2,1fr);gap:5px}
.complist{display:flex;flex-direction:column;gap:3px;max-height:230px;overflow-y:auto}
.crow{display:flex;align-items:center;gap:6px;padding:4px 6px;border:1px solid var(--line);
  border-radius:4px;background:var(--panel-2);cursor:pointer;font-family:"IBM Plex Mono",monospace;font-size:11px}
.crow.sel{border-color:var(--text);box-shadow:inset 2px 0 0 var(--text)}
.crow .d{font-weight:600;min-width:34px}
.crow .v{color:var(--muted);flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.crow .s{color:var(--muted)}
.crow .x{width:20px;height:20px;padding:0;font-size:10px;line-height:1;flex:none}
.props{display:flex;flex-direction:column;gap:7px}
.props .row span.lbl{flex:none;width:72px}

.viewport{position:relative;overflow:hidden;background:var(--canvas);isolation:isolate;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:32px 32px;cursor:default;touch-action:none;user-select:none;-webkit-user-select:none}
.viewport.grabbing{cursor:grabbing}
.viewport.nogrid{background-image:none}
.viewport.picking{cursor:crosshair}
.clip{position:absolute;inset:0;pointer-events:none}
.scene{position:absolute;inset:0;transform-origin:50% 50%;pointer-events:none}
.lbox{position:absolute;left:50%;top:50%;width:1200px;transform-origin:50% 50%;pointer-events:none}
.lbox video{display:block;width:100%;height:auto;pointer-events:none}
.lbox img{display:block;width:100%;height:auto;pointer-events:none;
  user-select:none;-webkit-user-select:none;-webkit-user-drag:none;-webkit-touch-callout:none}
/* pulse: holds at both ends (30% of the period each) with eased cross-fades between — each state can be looked at,
   no constant flicker. --phi / --plo set per layer (updateBlink), period --pulseT from the VIEW tab */
@keyframes pulse{0%,30%,100%{opacity:var(--phi,1)}50%,80%{opacity:var(--plo,0)}}
.lbox.pulse{animation:pulse var(--pulseT,2s) ease-in-out infinite}
.val.pz,.lsep .gv{cursor:pointer;text-decoration:underline dotted;text-underline-offset:3px}
.val.pz.pulsing,.lsep .gv.pulsing{color:var(--ok);text-decoration-style:solid}
/* no prefers-reduced-motion override: blinking is an explicit tool, toggled by the «мигание» button */
svg.marks{position:absolute;inset:0;pointer-events:none;z-index:20;overflow:visible}
.hud{position:absolute;left:12px;bottom:12px;display:flex;gap:6px;flex-wrap:wrap;z-index:21;
  font-family:"IBM Plex Mono",monospace;font-size:11px;color:#9fb0a8;pointer-events:none;max-width:calc(100% - 24px)}
.hud span{background:rgba(0,0,0,.5);border:1px solid rgba(255,255,255,.08);padding:3px 7px;border-radius:3px;
  font-variant-numeric:tabular-nums}
.hud span.cue{color:#0c110f;background:#e0c98a;border-color:#e0c98a}
.miss{position:absolute;inset:auto 0 auto 0;top:14px;margin:0 auto;width:max-content;max-width:90%;z-index:22;
  background:rgba(0,0,0,.72);border:1px solid var(--warn);color:#f0d9cd;border-radius:4px;padding:8px 12px;
  font-family:"IBM Plex Mono",monospace;font-size:11.5px;line-height:1.6}
.handle{position:absolute;top:0;bottom:0;width:2px;background:#e8e4d8;box-shadow:0 0 0 1px rgba(0,0,0,.5);
  cursor:ew-resize;display:none;z-index:19}
.handle::after{content:"";position:absolute;top:50%;left:50%;width:26px;height:26px;margin:-13px 0 0 -13px;
  border-radius:50%;background:#e8e4d8;box-shadow:0 0 0 1px rgba(0,0,0,.5)}
.handle::before{content:"◂▸";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  font-size:10px;color:#1b211e;z-index:1}
.viewport.swipe .handle{display:block}

.panel{background:var(--panel);border-left:1px solid var(--line);display:flex;flex-direction:column;min-height:0;position:relative}
@media (max-width:880px){ .panel{border-left:0;border-top:1px solid var(--line)} }
.phead{padding:13px 16px 11px;border-bottom:1px solid var(--line)}
.tabs{display:grid;grid-template-columns:repeat(4,1fr);border-bottom:1px solid var(--line)}
.lpanel .tabs{grid-template-columns:repeat(5,1fr) 30px 30px}
html[lang="en"] [data-only="ru"],html[lang="ru"] [data-only="en"]{display:none!important}
.tabs button{border:0;border-radius:0;background:transparent;box-shadow:none;padding:9px 4px;
  font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.05em;color:var(--muted);
  border-bottom:2px solid transparent}
.tabs button.on{color:var(--text);border-bottom-color:var(--text);background:transparent}
.pages{overflow-y:auto;flex:1;min-height:0}
[data-page="nets"]>.sect:first-child,[data-page="view"]>.sect:first-child{position:sticky;top:0;z-index:3;background:var(--panel)}
.sect{padding:13px 16px;border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:10px}
.sect:last-child{border-bottom:0}
.lbl{font-family:"IBM Plex Mono",monospace;font-size:10px;letter-spacing:.09em;text-transform:uppercase;color:var(--muted)}

.modes{display:grid;grid-template-columns:repeat(4,1fr);gap:5px}
.modes.two{grid-template-columns:repeat(2,1fr)}
.modes.five{grid-template-columns:repeat(5,1fr)}
.modes.five .mini{font-size:14px;padding:3px 0}
.conn{display:flex;flex-wrap:wrap;gap:4px}
.conn button{padding:2px 6px;font-size:11px}
.modes.three{grid-template-columns:repeat(3,1fr)}
button{font:inherit;color:var(--text);background:var(--panel-2);border:1px solid var(--line);
  border-radius:4px;padding:6px 4px;cursor:pointer;box-shadow:var(--shadow)}
button:hover:not(:disabled){border-color:var(--muted)}
button:focus-visible{outline:2px solid var(--ok);outline-offset:1px}
button.on{background:var(--text);color:var(--panel);border-color:var(--text)}
button:disabled{opacity:.4;cursor:default}
button.wide{width:100%}
.mini{font-family:"IBM Plex Mono",monospace;font-size:11px;padding:5px 3px}

.layer{border:1px solid var(--line);border-radius:5px;background:var(--panel-2);overflow:hidden}
.layer.sel{border-color:var(--text);box-shadow:inset 3px 0 0 var(--text)}
.layer.off{opacity:.5}
.layer.sub{margin-left:16px;border-left:3px solid var(--line)}
.layer.sub .lname::before{content:"↳ ";color:var(--muted)}
.actl{display:grid;grid-template-columns:1fr auto;gap:6px 8px;align-items:center;padding-top:8px;border-top:1px solid var(--line)}
.actl .abtn{display:grid;grid-template-columns:36px 36px;gap:5px}
.actl .abtn .mini{padding:3px 0}
.actl .alab{flex:none;width:26px;text-transform:none;font-size:12px}
.actl select.mini-sel{width:auto;flex:none;padding:1px 2px;font-size:10.5px;height:22px}
.actl input[type=color]{width:26px;height:22px;flex:none}
.lsep{display:flex;align-items:center;gap:8px;font-family:"IBM Plex Mono",monospace;font-size:10px;
  letter-spacing:.08em;color:var(--muted);margin:2px 0 -2px}
.lsep::before,.lsep::after{content:"";flex:1;border-top:1px solid var(--line)}
.lsep.gop::before{flex:0 0 10px}.lsep.gop::after{display:none}
.net.merge{outline:1px dashed var(--text);outline-offset:-1px}
.lsep .gline{flex:1;border-top:1px solid var(--line)}
.lsep input[type=range]{flex:0 0 110px;width:110px;margin:0}
.lsep .gv{flex:0 0 32px;text-align:right;letter-spacing:0}
.xbox{display:flex;align-items:center;gap:1px;border:1px solid var(--line);border-radius:4px;background:var(--panel-2);
  box-shadow:var(--shadow);font-family:"IBM Plex Mono",monospace;font-size:11px;padding-right:3px;min-width:0}
.xbox button{border:0;box-shadow:none;background:transparent;flex:1;min-width:0;padding:5px 1px}
.xbox input[type=text]{width:22px;flex:none;padding:1px 1px;font:inherit;text-align:right;border:1px solid var(--line);
  border-radius:3px;background:var(--panel);color:var(--text)}
.xbox.on{background:var(--text);border-color:var(--text);color:var(--panel)}
.xbox.on button{color:var(--panel)}
#stack.gray .clip{filter:grayscale(1)}   /* not on #stack: a filter makes it the containing block and the layers jump */
.lhead{display:flex;align-items:center;gap:5px;padding:5px 6px 4px;cursor:pointer}
.layer{cursor:pointer}
.lhead .lname{flex:1;min-width:0;padding:2px 3px;font-size:13px}
.lhead .tag{flex:none;font-size:9px;letter-spacing:.08em}
.lhead .tagsel{width:auto;flex:none;padding:2px 3px;font-size:11px}
.lhead .ibtn{width:22px;height:22px}
.layer .lbody{padding:2px 6px 6px;gap:3px}
.layer .row{gap:6px}
.layer input[type=range]{height:16px}
.layer input[type=color]{width:24px;height:20px}
.layer .val{min-width:36px}
.layer .row.r3{display:grid;grid-template-columns:repeat(4,1fr);gap:4px}
.layer select.mini-sel{width:auto;flex:none;padding:1px 2px;font-size:10.5px;height:20px}
.layer .lhead .tagsel{height:20px;padding:1px 2px}
.r3 .blendsel{padding:2px 3px;font-size:11px;min-width:0}
.r3 .xbtn{padding:2px 0;height:22px;font-size:11px}
.swatch{width:8px;height:22px;border-radius:2px;flex:none}
.lname{font-weight:600;font-size:12.5px;flex:1;min-width:0;border:1px solid transparent;background:transparent;
  border-radius:3px;padding:3px 5px;color:var(--text);font-family:inherit}
.lname:hover{border-color:var(--line)}
.lname:focus{border-color:var(--muted);background:var(--field);outline:none}
.lname-ro{border-color:transparent!important;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;cursor:pointer}
.ibtn{width:24px;height:24px;padding:0;font-size:11px;line-height:1;flex:none}
.lbody{padding:8px;display:flex;flex-direction:column;gap:7px}
.row{display:flex;align-items:center;gap:7px}
.val{font-family:"IBM Plex Mono",monospace;font-size:11px;color:var(--muted);
  font-variant-numeric:tabular-nums;min-width:42px;text-align:right}
.xf{display:grid;grid-template-columns:repeat(4,1fr);gap:5px}
input[type=text].num{width:64px;flex:none;text-align:right;padding:3px 5px;font-family:"IBM Plex Mono",monospace;
  font-size:11.5px;font-variant-numeric:tabular-nums}
input[type=text].num:disabled{opacity:.45}
input[type=text].num.bad{border-color:var(--warn)}
.unit{font-family:"IBM Plex Mono",monospace;font-size:11px;color:var(--muted);width:10px;flex:none}

input[type=range]{-webkit-appearance:none;appearance:none;flex:1;height:18px;background:transparent;margin:0;min-width:0}
input[type=range]:disabled{opacity:.4}
input[type=range]::-webkit-slider-runnable-track{height:3px;background:var(--line);border-radius:2px}
input[type=range]::-moz-range-track{height:3px;background:var(--line);border-radius:2px}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;border-radius:50%;
  background:var(--text);margin-top:-5.5px;border:0;cursor:pointer}
input[type=range]::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:var(--text);border:0;cursor:pointer}

select,input[type=text]{font:inherit;font-size:12px;color:var(--text);background:var(--field);
  border:1px solid var(--line);border-radius:4px;padding:5px 6px;width:100%;min-width:0}
select.slim{font-family:"IBM Plex Mono",monospace;font-size:11px;padding:3px 4px}
input[type=text].path{font-family:"IBM Plex Mono",monospace;font-size:11px}
input[type=color]{width:26px;height:24px;padding:0;border:1px solid var(--line);border-radius:4px;
  background:var(--field);cursor:pointer;flex:none}
.status{font-family:"IBM Plex Mono",monospace;font-size:11px;line-height:1.6;color:var(--muted);
  border-left:2px solid var(--line);padding-left:8px}
.status b{color:var(--text);font-weight:500}
.status .good{color:var(--ok)}
.status .bad{color:var(--warn)}
.keys{font-family:"IBM Plex Mono",monospace;font-size:10.5px;color:var(--muted);line-height:1.7}
.keys b{color:var(--text);font-weight:500}
.netlist{display:flex;flex-direction:column;gap:4px}
.net{display:flex;align-items:center;gap:6px;padding:5px 6px;border:1px solid var(--line);
  border-radius:4px;background:var(--panel-2);cursor:pointer}
.net.active{border-color:var(--text);box-shadow:inset 2px 0 0 var(--text)}
.net input[type=text]{border:0;background:transparent;padding:2px 0;font-weight:500;font-size:12.5px}
.net .cnt{font-family:"IBM Plex Mono",monospace;font-size:10.5px;color:var(--muted);
  font-variant-numeric:tabular-nums;min-width:26px;text-align:right}
.net .x{width:22px;height:22px;padding:0;font-size:11px;line-height:1;flex:none}
.net .grip{align-self:stretch;flex:none;width:18px;margin:-5px 0 -5px -6px;display:flex;align-items:center;
  justify-content:center;border-right:1px solid var(--line);color:var(--muted);font-size:10px;border-radius:3px 0 0 3px}
.net .grip:hover{background:var(--line);color:var(--text)}
.net.active .grip{color:var(--text)}
.empty{font-size:12px;color:var(--muted);font-style:italic}
.filerow{border:1px solid var(--line);border-radius:5px;background:var(--panel-2);padding:8px;
  display:flex;flex-direction:column;gap:7px}
.filerow.sel{border-color:var(--text)}
.filerow .cap{display:flex;align-items:center;gap:6px;font-weight:600;font-size:12.5px}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}