:root{
  color-scheme:dark;
  --bg:#111318;
  --panel:#191c23;
  --card:#20242d;
  --border:#353b47;
  --text:#f4f5f7;
  --muted:#aeb5c2;
  --accent:#7f9cff;
  --accent-soft:#29375d;
  --series2:#7ec8a5;
  --series3:#9279d8;
  --series4:#e0b15a;
  --series5:#df7d83;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:Inter,Segoe UI,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
}
button,select,input,textarea{font:inherit}
button{cursor:pointer}
.app-shell{max-width:1500px;margin:auto;padding:20px}
.topbar{
  display:flex;justify-content:space-between;align-items:center;gap:20px;
  margin-bottom:18px
}
.topbar h1{margin:0 0 5px;font-size:28px}
.topbar p,.section-head p,.output-card p,.details-card p{margin:0;color:var(--muted)}
.mode-switch{display:flex;border:1px solid var(--border);border-radius:10px;padding:4px}
.mode-switch button{border:0;background:transparent;color:var(--text);padding:9px 14px;border-radius:7px}
.mode-switch button.active{background:var(--accent-soft)}
.layout{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(350px,.8fr);gap:18px}
.workspace,.output-card{min-width:0}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.tab,.secondary,.preset-row button{
  border:1px solid var(--border);
  background:transparent;
  color:var(--text);
  border-radius:9px;
  padding:9px 13px
}
.tab.active,.primary{
  background:var(--accent-soft);
  border-color:transparent;
  color:var(--text)
}
.primary{border:0;border-radius:9px;padding:10px 15px}
.panel,.output-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:14px;
  padding:18px
}
.panel{display:none}
.panel.active{display:block}
.section-head,.row-between,.control-head{
  display:flex;justify-content:space-between;align-items:flex-start;gap:15px
}
.section-head h2,.output-card h2{margin:0 0 5px}
.badge{
  border:1px solid var(--border);
  border-radius:999px;
  padding:6px 11px;
  white-space:nowrap
}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:18px}
label{display:block;color:var(--text);font-size:14px}
label small{display:block;color:var(--muted);margin-top:5px;line-height:1.35}
select,input[type=text],textarea{
  width:100%;margin-top:6px;background:var(--panel);color:var(--text);
  border:1px solid var(--border);border-radius:9px;padding:10px 11px
}
textarea{resize:vertical;line-height:1.5}
input[type=range]{width:100%;accent-color:var(--accent)}
.control-card,.mini-card,.piano-card,.details-card,.preset-box,.summary-box{
  margin-top:16px;background:var(--panel);border-radius:12px;padding:15px
}
.control-head span{display:block;color:var(--muted);font-size:13px;margin-top:4px}
.control-head b{font-size:24px}
.scale{display:flex;justify-content:space-between;color:var(--muted);font-size:11px}
.hidden{display:none!important}
.tone-layout{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:15px;margin-top:18px}
.tone-field{
  position:relative;min-height:250px;border:1px solid var(--border);border-radius:12px;
  background:
    radial-gradient(circle at 20% 20%,rgba(126,200,165,.20),transparent 35%),
    radial-gradient(circle at 80% 20%,rgba(224,177,90,.16),transparent 35%),
    radial-gradient(circle at 20% 80%,rgba(146,121,216,.16),transparent 35%),
    radial-gradient(circle at 80% 80%,rgba(223,125,131,.15),transparent 35%),
    var(--panel);
  cursor:crosshair;overflow:hidden
}
.corner{position:absolute;font-size:13px;font-weight:600}
.tl{top:12px;left:12px}.tr{top:12px;right:12px}.bl{bottom:12px;left:12px}.br{bottom:12px;right:12px}
.axis-v,.axis-h{position:absolute;background:var(--border)}
.axis-v{left:50%;top:0;width:1px;height:100%}.axis-h{top:50%;left:0;height:1px;width:100%}
.tone-dot{
  position:absolute;width:25px;height:25px;border-radius:50%;border:2px solid var(--text);
  background:var(--accent);transform:translate(-50%,-50%)
}
.value-list{display:grid;gap:9px;margin:14px 0;color:var(--muted)}
.value-list span{display:flex;justify-content:space-between}
.value-list b{color:var(--text)}
.slider-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
.slider-item .slider-head{display:flex;justify-content:space-between;gap:12px;margin-bottom:4px}
.slider-item .slider-scale{display:flex;justify-content:space-between;color:var(--muted);font-size:11px}
.compact-controls{margin-top:18px}
.pro-only h3{font-size:15px}
.piano-card{overflow-x:auto}
.piano{position:relative;height:112px;min-width:620px}
.white-key{
  position:absolute;top:0;height:95px;background:#f6f6f1;border:1px solid #a7a7a1;border-radius:0 0 4px 4px
}
.white-key span{position:absolute;bottom:4px;left:3px;color:#555;font-size:9px}
.black-key{
  position:absolute;top:0;height:58px;background:#111;border-radius:0 0 4px 4px;z-index:3
}
.range-full,.range-comfort{position:absolute;border-radius:5px}
.range-full{height:14px;bottom:0;background:var(--series3);opacity:.65}
.range-comfort{height:7px;bottom:3px;background:var(--series2)}
.details-card summary{cursor:pointer;font-weight:700}
.check-stack{display:grid;gap:10px;align-content:start}
.check-stack label{display:flex;gap:8px;align-items:center}
.check-stack input{width:auto}
.button-row,.preset-row,.copy-cluster{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:12px}
.copy-cluster{margin-top:0}
.output-card{position:sticky;top:16px;align-self:start}
.status{color:var(--muted);font-size:13px;min-height:18px}
.profile-row{color:var(--muted);margin-top:7px;font-size:14px}
@media(max-width:980px){
  .layout{grid-template-columns:1fr}
  .output-card{position:static}
}
@media(max-width:650px){
  .app-shell{padding:12px}
  .topbar{align-items:flex-start;flex-direction:column}
  .grid2,.slider-grid,.tone-layout{grid-template-columns:1fr}
  .tabs{gap:6px}
  .tab{padding:8px 10px}
  .section-head{align-items:flex-start}
}


/* Beta v0.0.1 additions */
.title-line{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.version-badge{
  display:inline-flex;align-items:center;border:1px solid var(--accent);
  color:var(--text);background:var(--accent-soft);border-radius:999px;
  padding:4px 9px;font-size:11px;font-weight:700;letter-spacing:.04em
}
.age-scale{position:relative;height:22px;margin-top:2px;color:var(--muted);font-size:10px}
.age-scale span{position:absolute;transform:translateX(-50%);white-space:nowrap}
.age-scale span:first-child{transform:none}
.age-scale span:last-child{transform:translateX(-100%)}
.age-scale-caption{
  display:flex;justify-content:space-between;gap:6px;color:var(--muted);
  font-size:10px;border-top:1px solid var(--border);padding-top:4px
}
.output-tools{margin-top:14px;padding:12px;border-radius:10px;background:var(--panel)}
.limit-control{margin:0}
.limit-row{display:flex;align-items:center;gap:10px;margin-top:7px;flex-wrap:wrap}
.limit-row input{
  width:110px;margin:0;background:var(--card);color:var(--text);
  border:1px solid var(--border);border-radius:9px;padding:9px 10px
}
.limit-row span{font-size:12px;color:var(--muted)}
.profile-manager{
  margin-top:18px;padding:15px;border-radius:12px;background:var(--panel)
}
.profile-manager-head p{margin-top:4px!important;font-size:13px}
.profile-save-row,.profile-load-row{
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px;margin-top:12px
}
.profile-load-row{grid-template-columns:minmax(0,1fr) auto auto}
.profile-save-row input,.profile-load-row select{margin:0}
.danger{border-color:#76505a}
@media(max-width:650px){
  .profile-save-row,.profile-load-row{grid-template-columns:1fr}
  .limit-row{align-items:flex-start;flex-direction:column}
}

/* Beta v0.0.2 */
#extremeSliders{margin-top:20px}.preview-scope{margin:20px 0;padding:15px;background:var(--panel);border-radius:12px;color:var(--muted)}
.preview-scope svg{width:100%;height:100px}.preview-scope figcaption{font-size:13px}
button:disabled{opacity:.55;cursor:not-allowed}input[type=checkbox]{accent-color:var(--accent)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

#engineKey{width:100%;padding:10px;background:var(--panel);color:var(--text);border:1px solid var(--border);border-radius:9px;margin-top:6px}#waveform{width:100%;height:120px}#previewSnapshot{white-space:pre-wrap;overflow-wrap:anywhere;font:inherit;font-size:13px}a{color:#a9bcff}.control-card p{color:var(--muted);line-height:1.5}

[hidden] { display: none !important; }
#previewProgress { width:100%; height:22px; accent-color:#7ec8a5; }
#progressInfo { display:block; margin-top:8px; }
.comparison-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:16px; }
.comparison-grid audio { width:100%; }
.comparison-grid pre { white-space:pre-wrap; overflow-wrap:anywhere; }
@media(max-width:650px){.comparison-grid{grid-template-columns:1fr;}}
:root .version-history { margin-top: 24px; padding: 20px; border: 1px solid var(--border, #35415a); border-radius: 14px; }
.version-history summary { cursor: pointer; font-weight: 700; padding: 6px 0; }
.version-history article { margin-top: 20px; }
.version-history h2 { font-size: 1.05rem; }
.version-history li { margin: 8px 0; line-height: 1.5; }