:root{
  /* tema escuro — grafite sob luz dirigida (padrão) */
  --bg:#0c0d0e;
  --panel:#131517;
  --panel-2:#171a1c;
  --recess:#0a0b0c;
  --line:#26292c;
  --line-soft:#1c1f21;
  --ink:#d9d5cd;
  --ink-dim:#8b8880;
  --ink-faint:#5a5751;
  --ink-hi:#fff;
  --accent:#ff6a1a;
  --accent-dim:#8a3a10;
  --accent-wash:#1d1512;
  --accent-ink:#140b05;
  --ok:#7fbf8a;
  --warn:#e0b04a;
  --bad:#e05a4a;
  --scrim-rgb:12,13,14;
  --stage-a:#17191b;
  --stage-b:#0c0d0e;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --cond:"Barlow Condensed","Arial Narrow",sans-serif;
}
/* tema claro — chapa clara sob luz de trabalho, mesmo instrumento */
:root[data-theme="light"]{
  --bg:#e7e2d6;
  --panel:#f4f1e9;
  --panel-2:#fbfaf6;
  --recess:#e2ddce;
  --line:#d2ccb9;
  --line-soft:#e1dcca;
  --ink:#2a2620;
  --ink-dim:#65604f;
  --ink-faint:#928c76;
  --ink-hi:#0f0d09;
  --accent:#d9520a;
  --accent-dim:#f6cea3;
  --accent-wash:#fbe3cc;
  --accent-ink:#140b05;
  --ok:#2f7d43;
  --warn:#95660a;
  --bad:#b93a28;
  --scrim-rgb:255,253,248;
  --stage-a:#eeeadd;
  --stage-b:#e2ddcc;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  background:var(--bg);color:var(--ink);
  font-family:var(--cond);
  overflow:hidden;
  -webkit-font-smoothing:antialiased;
}
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:999;
  opacity:.035;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

#app{
  display:grid;grid-template-columns:360px 1fr;grid-template-rows:100vh;
  height:100vh;overflow:hidden;
}

/* ---------- rail ---------- */
#rail{
  min-height:0;
  background:var(--panel);
  border-right:1px solid var(--line);
  display:flex;flex-direction:column;
  overflow-y:auto;overflow-x:hidden;
}
#rail::-webkit-scrollbar{width:8px}
#rail::-webkit-scrollbar-thumb{background:var(--line);}

.brand{
  padding:18px 20px 16px;border-bottom:1px solid var(--line);
  position:relative;display:flex;justify-content:space-between;align-items:flex-start;gap:10px;
}
.brand-tools{display:flex;gap:6px;flex:0 0 auto}
.icon-btn{
  width:26px;height:26px;padding:0;font-size:13px;line-height:1;
  background:transparent;border:1px solid var(--line);color:var(--ink-dim);
}
.icon-btn:hover{border-color:var(--accent);color:var(--ink-hi)}
.brand h1{
  font-size:27px;font-weight:700;letter-spacing:.22em;
  text-transform:uppercase;line-height:1;
}
.brand h1 span{color:var(--accent)}
.brand p{
  font-family:var(--mono);font-size:9.5px;color:var(--ink-faint);
  letter-spacing:.09em;margin-top:7px;text-transform:uppercase;
}
#verTag{opacity:.6}
.brand::after{
  content:"";position:absolute;left:20px;bottom:-1px;width:38px;height:2px;background:var(--accent);
}

/* botão com a cor de marca oficial do Ko-fi (#29abe0), não a paleta do
   app — de propósito, pra ficar reconhecível como o widget deles. Usado
   no pop-up de apoio (#kofiPrompt), não fica fixo na barra lateral.      */
.kofi-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  background:#29abe0;color:#fff;text-decoration:none;
  font-family:var(--cond);font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  padding:9px 14px;border-radius:6px;transition:background .14s;
}
.kofi-btn:hover{background:#1c96c9}

.proto-note{
  margin-top:auto;padding:14px 20px;border-top:1px solid var(--line-soft);
  font-family:var(--mono);font-size:11px;line-height:1.7;color:var(--ink-faint);
}
.proto-note a{color:var(--accent);text-decoration:none}
.proto-note a:hover{text-decoration:underline}

.block{padding:16px 20px;border-bottom:1px solid var(--line-soft)}
.block-h{
  display:flex;align-items:center;gap:8px;margin-bottom:12px;
}
.block-h b{
  font-size:11px;font-weight:600;letter-spacing:.19em;text-transform:uppercase;
  color:var(--ink-dim);
}
.block-h hr{flex:1;border:0;border-top:1px solid var(--line-soft)}

button,.btn{
  font-family:var(--cond);font-size:13px;font-weight:600;
  letter-spacing:.13em;text-transform:uppercase;
  background:var(--panel-2);color:var(--ink);
  border:1px solid var(--line);border-radius:0;
  padding:9px 12px;cursor:pointer;
  transition:border-color .14s,color .14s,background .14s;
  display:inline-flex;align-items:center;justify-content:center;gap:7px;
}
button:hover{border-color:var(--accent);color:var(--ink-hi)}
button:disabled{opacity:.34;cursor:not-allowed;border-color:var(--line)!important;color:var(--ink)!important}
button.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
button.primary:hover{background:#ff8038;border-color:#ff8038;color:var(--accent-ink)}
button.ghost{background:transparent}

.row{display:flex;gap:7px}
.row>*{flex:1}
.full{width:100%}

/* segmented axis picker */
.seg{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line)}
.seg button{border:0;border-right:1px solid var(--line);font-family:var(--mono);font-size:13px;padding:10px 0;letter-spacing:.08em}
.seg button:last-child{border-right:0}
.seg button.on{background:var(--accent);color:var(--accent-ink)}
.seg button.on:hover{background:var(--accent)}

/* mode picker */
.modes{display:grid;grid-template-columns:1fr 1fr;gap:7px}
.modes button{flex-direction:column;gap:3px;padding:11px 6px;line-height:1.15}
.modes button small{font-family:var(--mono);font-size:8.5px;letter-spacing:.03em;text-transform:none;color:var(--ink-faint);font-weight:400}
.modes button.on{border-color:var(--accent);background:var(--accent-wash)}
.modes button.on small{color:var(--ink-dim)}

/* field */
.field{margin-bottom:14px}
.field:last-child{margin-bottom:0}
.field-top{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:7px}
.field-top label{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-dim);font-weight:500}
.field-top .unit{font-family:var(--mono);font-size:9px;color:var(--ink-faint)}
.field-in{display:flex;gap:8px;align-items:center}
#cutN, #delN{
  width:88px;background:var(--recess);border:1px solid var(--line);color:var(--ink);
  font-family:var(--mono);font-size:13px;padding:7px 8px;border-radius:0;
  text-align:right;
}
#cutN:focus, #delN:focus{outline:0;border-color:var(--accent)}
input[type=range]{
  -webkit-appearance:none;appearance:none;flex:1;height:22px;background:transparent;cursor:ew-resize;
}
input[type=range]::-webkit-slider-runnable-track{height:2px;background:var(--line)}
input[type=range]::-moz-range-track{height:2px;background:var(--line)}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:5px;height:20px;background:var(--accent);margin-top:-9px;border-radius:0;
}
input[type=range]::-moz-range-thumb{width:5px;height:20px;background:var(--accent);border:0;border-radius:0}

/* status */
.status{
  display:flex;gap:9px;align-items:flex-start;
  border:1px solid var(--line);background:var(--recess);padding:10px 11px;
}
.status .dot{width:7px;height:7px;flex:0 0 7px;margin-top:4px;background:var(--ink-faint)}
.status.ok .dot{background:var(--ok);box-shadow:0 0 7px var(--ok)}
.status.warn .dot{background:var(--warn);box-shadow:0 0 7px var(--warn)}
.status.bad .dot{background:var(--bad);box-shadow:0 0 7px var(--bad)}
.status b{display:block;font-size:11.5px;letter-spacing:.14em;text-transform:uppercase;margin-bottom:3px}
.status.ok b{color:var(--ok)} .status.warn b{color:var(--warn)} .status.bad b{color:var(--bad)}
.status p{
  font-family:var(--mono);font-size:10px;line-height:1.55;color:var(--ink-dim);
  max-height:0;overflow:hidden;opacity:0;transition:max-height .18s ease,opacity .18s ease;
}
.status.warn p,.status.bad p{max-height:70px;opacity:1;margin-top:3px}

/* readout table */
.ro{font-family:var(--mono);font-size:10.5px;width:100%;border-collapse:collapse}
.ro td{padding:4px 0;border-bottom:1px solid var(--line-soft)}
.ro tr:last-child td{border-bottom:0}
.ro td:first-child{color:var(--ink-faint);letter-spacing:.04em}
.ro td:last-child{text-align:right;color:var(--ink)}
.ro td .d{color:var(--accent)}

.toggles{display:flex;flex-wrap:wrap;gap:6px}
.toggles button{flex:0 0 auto;font-size:10.5px;padding:6px 9px;letter-spacing:.1em}
.toggles button.on{border-color:var(--accent);color:var(--accent)}

/* compact spec line (peça) */
.specline{
  font-family:var(--mono);font-size:11px;color:var(--ink-dim);
  display:flex;flex-wrap:wrap;gap:5px 13px;align-items:baseline;
}
.specline .name{flex:1 1 100%;color:var(--ink);font-size:11.5px;letter-spacing:.02em}
.specline b{color:var(--ink);font-weight:500}

/* disclosure for secondary numbers */
details{margin-top:2px}
details summary{
  cursor:pointer;font-family:var(--mono);font-size:9.5px;color:var(--ink-faint);
  letter-spacing:.1em;text-transform:uppercase;list-style:none;
  padding:5px 0;display:flex;align-items:center;gap:6px;user-select:none;
}
details summary::-webkit-details-marker{display:none}
details summary::before{content:"+";color:var(--accent);font-family:var(--mono);width:8px}
details[open] summary::before{content:"–"}
details:hover summary{color:var(--ink-dim)}
details .ro{margin-top:4px}

.vol-headline{font-family:var(--mono);font-size:17px;color:var(--ink);letter-spacing:.01em}

/* floating view toolbar over the canvas */
#viewbar{position:absolute;top:40px;right:16px;display:flex;gap:6px;justify-content:flex-end;pointer-events:auto}
#viewbar button{
  font-family:var(--mono);font-size:9px;letter-spacing:.08em;text-transform:uppercase;
  background:rgba(var(--scrim-rgb),.82);border:1px solid var(--line);color:var(--ink-dim);
  padding:6px 8px;cursor:pointer;backdrop-filter:blur(3px);transition:border-color .14s,color .14s;
}
#viewbar button:hover{border-color:var(--accent);color:var(--ink-hi)}
#viewbar button.on{border-color:var(--accent);color:var(--accent)}

/* ---------- stage ---------- */
#stage{position:relative;min-height:0;background:
  radial-gradient(ellipse 90% 75% at 50% 42%, var(--stage-a) 0%, var(--stage-b) 72%);
  overflow:hidden}
#cv{display:block;width:100%;height:100%}

#hud{position:absolute;inset:0;pointer-events:none}
.tag{
  position:absolute;transform:translate(-50%,-50%);
  font-family:var(--mono);font-size:9.5px;letter-spacing:.06em;
  background:rgba(var(--scrim-rgb),.86);border:1px solid var(--accent);
  color:var(--accent);padding:3px 7px;white-space:nowrap;
  backdrop-filter:blur(3px);
}
.corner{
  position:absolute;font-family:var(--mono);font-size:9.5px;
  color:var(--ink-faint);letter-spacing:.07em;line-height:1.7;
}
#c-tl{top:14px;left:16px}
#c-bl{bottom:14px;left:16px}
#c-br{bottom:14px;right:16px;text-align:right}
.corner b{color:var(--ink-dim);font-weight:500}

#drop{
  position:absolute;inset:0;display:none;
  align-items:center;justify-content:center;
  background:rgba(var(--scrim-rgb),.9);border:2px dashed var(--accent);
  font-size:20px;letter-spacing:.24em;text-transform:uppercase;color:var(--accent);
}
#drop.on{display:flex}

/* ---------- onboarding ---------- */
.onb-backdrop{
  position:fixed;inset:0;z-index:1000;display:flex;align-items:center;justify-content:center;
  background:rgba(var(--scrim-rgb),.72);backdrop-filter:blur(2px);padding:20px;
}
.onb-backdrop[hidden]{display:none}
.onb-card{
  width:min(430px,100%);background:var(--panel);border:1px solid var(--line);
  padding:26px 24px 22px;position:relative;
}
.onb-card::before{content:"";position:absolute;left:0;top:0;width:100%;height:2px;background:var(--accent)}
.onb-step{
  font-family:var(--mono);font-size:10px;letter-spacing:.16em;color:var(--accent);
  text-transform:uppercase;margin-bottom:10px;
}
.onb-card h2{
  font-family:var(--cond);font-size:21px;letter-spacing:.04em;text-transform:uppercase;
  font-weight:700;line-height:1.15;margin-bottom:10px;
}
.onb-card p{font-family:var(--mono);font-size:11.5px;line-height:1.65;color:var(--ink-dim);min-height:72px}
.onb-dots{display:flex;gap:6px;margin:16px 0 20px}
.onb-dots span{width:16px;height:2px;background:var(--line)}
.onb-dots span.on{background:var(--accent)}
.onb-nav{display:flex;justify-content:space-between;align-items:center}
/* pop-up de apoio (#kofiPrompt) reaproveita o cartão do onboarding, mas é
   uma tela única, sem carrossel — sem a altura mínima pensada pro texto
   variar entre passos.                                                   */
#kofiPrompt .onb-card p{min-height:0;margin-bottom:20px}


#busy{
  position:absolute;top:14px;right:16px;font-family:var(--mono);font-size:9.5px;
  color:var(--accent);letter-spacing:.1em;opacity:0;transition:opacity .2s;
}
#busy.on{opacity:1}

@media (max-width:820px){
  #app{grid-template-columns:1fr;grid-template-rows:1fr 300px}
  #rail{order:2;border-right:0;border-top:1px solid var(--line)}
  #stage{order:1}
}