:root{
  --bg:#141922; --panel:#1a1d23; --panel2:#22262e;
  --cyan:#00f0ff; --mag:#ff2bd6; --lime:#39ff14;
  --txt:#c8cdd6; --dim:#6b7280;
  --wkey:min(6.5vw,44px); --bkey:min(4vw,26px);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  background:
    radial-gradient(1200px 600px at 50% -10%, #1e2530 0%, #0a0c11 70%),
    var(--bg);
  color:var(--txt);
  font-family:'Rajdhani',sans-serif;
  overflow-x:hidden;
  -webkit-user-select:none;user-select:none;
}
#app{max-width:1080px;margin:0 auto;padding:10px}
.rack{
  display:flex;flex-direction:column;gap:10px;
  padding:14px;border-radius:14px;
  background:linear-gradient(180deg,#20252f,#12161d);
  border:1px solid #2c333d;
  box-shadow:0 0 0 1px #000 inset, 0 20px 60px rgba(0,0,0,.6);
}
.panel{
  background:linear-gradient(180deg,var(--panel2),var(--panel));
  border:1px solid #2a303a;border-radius:10px;padding:12px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.03), 0 4px 12px rgba(0,0,0,.4);
  position:relative;
}
.panel::before,.panel::after{
  content:'';position:absolute;width:6px;height:6px;border-radius:50%;
  background:radial-gradient(circle at 35% 35%,#3a4150,#0c0e12);top:6px;
}
.panel::before{left:6px}.panel::after{right:6px}

.section-title{
  font-family:'Orbitron';font-size:9px;letter-spacing:2px;color:var(--cyan);
  margin-bottom:6px;text-shadow:0 0 8px rgba(0,240,255,.4);
}

/* TOP */
.top{display:grid;grid-template-columns:auto auto 1fr auto;gap:16px;align-items:center}
.knob-wrap{display:flex;flex-direction:column;align-items:center;gap:4px}
.knob{
  width:80px;height:80px;border-radius:50%;cursor:grab;position:relative;
  background:radial-gradient(circle at 40% 35%,#3a4250,#161a21 70%);
  border:2px solid #2c333d;
  box-shadow:0 0 20px rgba(0,240,255,.15), inset 0 -4px 8px rgba(0,0,0,.6);
}
.knob-wrap.sm .knob{width:58px;height:58px}
.knob:active{cursor:grabbing}
.knob-dial{position:absolute;inset:0}
.knob-tick{
  position:absolute;left:50%;top:8px;width:3px;height:22px;border-radius:2px;
  background:var(--cyan);transform:translateX(-50%);
  box-shadow:0 0 8px var(--cyan);
}
.wet-knob .knob-tick{background:var(--mag);box-shadow:0 0 10px var(--mag)}
.knob-label{font-family:'Orbitron';font-size:10px;letter-spacing:1px;color:var(--txt)}
.knob-val{font-size:12px;color:var(--lime);font-weight:600}

.faders-block{display:flex;gap:14px}
.fader-wrap{display:flex;flex-direction:column;align-items:center;gap:4px}
.fader{
  width:22px;height:96px;border-radius:6px;position:relative;cursor:pointer;
  background:linear-gradient(180deg,#0c0f14,#181c24);
  border:1px solid #2c333d;box-shadow:inset 0 0 10px rgba(0,0,0,.8);
}
.fader-fill{position:absolute;bottom:0;left:0;right:0;
  background:linear-gradient(180deg,var(--cyan),#0a5560);opacity:.35;border-radius:5px}
.fader-cap{
  position:absolute;left:-4px;right:-4px;height:16px;border-radius:4px;
  background:linear-gradient(180deg,#4a5262,#20252f);border:1px solid var(--cyan);
  box-shadow:0 0 10px rgba(0,240,255,.5);
}
.fader-label{font-family:'Orbitron';font-size:9px;color:var(--txt)}

.contour-block{}
.contour-grid{display:grid;grid-template-columns:1fr 1fr;gap:5px}
.contour-btn{
  font-family:'Rajdhani';font-weight:600;font-size:11px;padding:6px 4px;
  background:#171b22;color:var(--dim);border:1px solid #2c333d;border-radius:5px;cursor:pointer;
  transition:all .15s;
}
.contour-btn:hover{border-color:var(--cyan);color:var(--txt)}
.contour-btn.active{
  color:#0a0c11;background:linear-gradient(180deg,var(--lime),#1c8a0c);
  border-color:var(--lime);box-shadow:0 0 14px rgba(57,255,20,.5);
}

.logo-block{text-align:right}
.logo-emblem{color:var(--mag);font-size:18px;text-shadow:0 0 12px var(--mag)}
.logo-text{font-family:'Orbitron';font-weight:900;font-size:34px;letter-spacing:4px;
  color:#fff;text-shadow:0 0 18px var(--cyan),0 0 4px var(--mag);line-height:1}
.logo-sub{font-family:'Orbitron';font-size:11px;letter-spacing:5px;color:var(--cyan)}
.logo-tag{font-size:9px;letter-spacing:2px;color:var(--dim);margin-top:2px}

/* ENVELOPE */
.envelope{display:flex;gap:16px;align-items:center;flex-wrap:wrap}
.bands-block{flex:1;min-width:200px}
.band-strip{display:flex;gap:1px;height:24px;align-items:flex-end;margin-bottom:6px;
  padding:2px;background:#0c0f14;border-radius:4px;border:1px solid #2c333d;overflow:hidden}
.bstrip{flex:1;background:linear-gradient(180deg,var(--cyan),#0a4550);min-height:30%;
  height:calc(30% + 60% * var(--r,.5));border-radius:1px;opacity:.6}
.band-strip .bstrip:nth-child(odd){height:70%}
.band-strip .bstrip:nth-child(3n){height:90%}
.band-ctrl{display:flex;align-items:center;gap:8px}
#bandSlider{flex:1;accent-color:var(--cyan)}
.band-count{font-family:'Orbitron';font-size:20px;font-weight:800;color:var(--lime);
  text-shadow:0 0 10px rgba(57,255,20,.4)}
.band-unit{font-size:9px;letter-spacing:2px;color:var(--dim)}

/* DISPLAY */
.display{padding:8px}
.display-header{display:flex;justify-content:space-between;align-items:center;padding:0 6px 6px}
.disp-title{font-family:'Orbitron';font-size:11px;letter-spacing:3px;color:var(--mag);
  text-shadow:0 0 10px rgba(255,43,214,.4)}
.disp-hint{font-size:10px;color:var(--dim)}
#canvas{width:100%;height:220px;display:block;border-radius:8px;border:1px solid #2c333d;
  box-shadow:inset 0 0 30px rgba(0,240,255,.06)}

/* BOTTOM */
.bottom{display:grid;grid-template-columns:auto auto 1fr;gap:14px;align-items:stretch}
.mod-source,.carrier-select{display:flex;flex-direction:column;gap:6px;min-width:150px}
.src-btn{
  font-family:'Rajdhani';font-weight:600;font-size:12px;padding:7px;
  background:#171b22;color:var(--dim);border:1px solid #2c333d;border-radius:5px;cursor:pointer;transition:.15s}
.src-btn:hover{border-color:var(--cyan);color:var(--txt)}
.src-btn.active{color:#0a0c11;background:linear-gradient(180deg,var(--cyan),#0a6070);
  border-color:var(--cyan);box-shadow:0 0 12px rgba(0,240,255,.4)}
#ttsText{background:#0c0f14;border:1px solid #2c333d;color:var(--txt);
  padding:6px;border-radius:5px;font-family:'Rajdhani';font-size:12px;outline:none}
#ttsText:focus{border-color:var(--mag)}
.mod-status{font-size:10px;color:var(--lime);letter-spacing:.5px}
#waveSelect{background:#0c0f14;border:1px solid #2c333d;color:var(--cyan);
  padding:7px;border-radius:5px;font-family:'Orbitron';font-size:12px;cursor:pointer;outline:none}
.oct-ctrl{display:flex;align-items:center;gap:6px}
.oct-ctrl button{width:32px;height:30px;background:#171b22;border:1px solid #2c333d;
  color:var(--cyan);font-size:18px;border-radius:5px;cursor:pointer}
.oct-ctrl button:hover{border-color:var(--cyan);box-shadow:0 0 8px rgba(0,240,255,.3)}
#octLabel{font-family:'Orbitron';font-size:11px;flex:1;text-align:center;color:var(--txt)}

/* PIANO */
.piano{
  position:relative;height:130px;display:flex;background:#0a0c11;
  border-radius:8px;padding:4px;border:1px solid #2c333d;overflow-x:auto;
  box-shadow:inset 0 6px 12px rgba(0,0,0,.6);
}
.key{cursor:pointer;user-select:none;touch-action:none}
.key.white{
  width:var(--wkey);flex:0 0 var(--wkey);height:100%;
  background:linear-gradient(180deg,#e8ecf2,#aab2bf);
  border:1px solid #333;border-radius:0 0 6px 6px;margin-right:1px;
  display:flex;align-items:flex-end;justify-content:center;padding-bottom:6px;
  transition:.05s;
}
.key.white.down{background:linear-gradient(180deg,var(--cyan),#0a8090);
  box-shadow:0 0 20px var(--cyan);transform:translateY(2px)}
.key.black{
  position:absolute;top:4px;width:var(--bkey);height:60%;z-index:5;
  background:linear-gradient(180deg,#20252f,#0a0c11);
  border:1px solid #000;border-radius:0 0 4px 4px;
}
.key.black.down{background:linear-gradient(180deg,var(--mag),#7a1466);
  box-shadow:0 0 20px var(--mag)}
.klbl{font-size:9px;color:#555;font-family:'Orbitron';pointer-events:none}
.key.white.down .klbl{color:#003a44}

/* FOOTER */
.footer{display:flex;justify-content:space-between;align-items:center;
  padding:4px 8px;font-size:11px;color:var(--dim)}
#powerBadge{color:var(--lime);font-family:'Orbitron';font-size:9px;letter-spacing:2px;
  animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.footer a{color:var(--cyan);text-decoration:none;border-bottom:1px dotted var(--cyan)}
.footer a:hover{text-shadow:0 0 8px var(--cyan)}

/* TOAST */
.toast{
  position:fixed;bottom:20px;left:50%;transform:translateX(-50%) translateY(20px);
  background:#12161d;border:1px solid var(--cyan);color:var(--txt);
  padding:10px 18px;border-radius:8px;font-family:'Rajdhani';font-weight:600;
  box-shadow:0 0 20px rgba(0,240,255,.3);opacity:0;pointer-events:none;
  transition:.3s;z-index:100;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ONBOARD */
.onboard{position:fixed;inset:0;background:rgba(6,8,12,.9);backdrop-filter:blur(6px);
  display:flex;align-items:center;justify-content:center;z-index:200;padding:20px}
.onboard.hidden{display:none}
.onboard-card{
  max-width:420px;background:linear-gradient(180deg,#1c212b,#12161d);
  border:1px solid var(--cyan);border-radius:14px;padding:28px;text-align:center;
  box-shadow:0 0 40px rgba(0,240,255,.25);
}
.onboard-card h2{font-family:'Orbitron';font-weight:900;font-size:26px;
  color:#fff;text-shadow:0 0 16px var(--cyan);margin-bottom:12px;letter-spacing:2px}
.onboard-card p{font-size:15px;line-height:1.5;color:var(--txt);margin-bottom:20px}
.onboard-card b{color:var(--lime)}
#startBtn{font-family:'Orbitron';font-weight:800;font-size:14px;letter-spacing:2px;
  padding:14px 30px;background:linear-gradient(180deg,var(--cyan),#0a6070);
  color:#04141a;border:none;border-radius:8px;cursor:pointer;
  box-shadow:0 0 24px rgba(0,240,255,.5);transition:.2s}
#startBtn:hover{transform:scale(1.05);box-shadow:0 0 34px rgba(0,240,255,.7)}

/* RESPONSIVE */
@media(max-width:760px){
  .top{grid-template-columns:1fr 1fr;gap:12px}
  .logo-block{grid-column:1/-1;text-align:center}
  .logo-text{font-size:28px}
  .bottom{grid-template-columns:1fr 1fr}
  .piano{grid-column:1/-1}
  .knob{width:64px;height:64px}
}