body
{
   background-color: #FFFFFF;
   color: #000000;
   font-family: Arial;
   font-weight: normal;
   font-size: 13px;
   line-height: 1.1875;
   margin: 0;
   padding: 0;
}
:root {
  --bg:      #f4f6fa;
  --surface: #ffffff;
  --sur2:    #f0f2f8;
  --accent:  #2244cc;
  --accent2: #1133aa;
  --green:   #22aa44;
  --blue:    #3366cc;
  --dim:     #b0b8d0;
  --text:    #2a3a5a;
  --border:  #d0d8e8;
  --bdr2:    #c0c8dc;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:'Share Tech Mono',monospace;
  min-height:100vh;
  display:flex;
  flex-direction:column;
  align-items:center;
  padding:26px 16px 48px;
}
.w{width:100%;max-width:880px}

/* ── Header ── */
header{display:flex;align-items:center;gap:14px;margin-bottom:20px;width:100%;max-width:880px}
.logo{font-family:'Orbitron',monospace;font-size:12px;font-weight:900;letter-spacing:7px;color:#1a3a6a;white-space:nowrap}
.hl{flex:1;height:1px;background:#c0c8dc;opacity:.6}

/* ── MIDI bars ── */
.midi-bars{display:flex;gap:8px;margin-bottom:20px;width:100%;max-width:880px}
.midi-bar{
  flex:1;display:flex;align-items:center;gap:8px;
  background:var(--surface);border:1px solid var(--border);padding:8px 12px;min-width:0;
}
.dot{width:8px;height:8px;border-radius:50%;background:#c8d0e4;flex-shrink:0;transition:all .3s}
.dot.on{background:#22aa44;box-shadow:0 0 6px #22aa44}
.dot.out-on{background:#2244cc;box-shadow:0 0 6px #2244cc}
.mlabel{font-size:9px;color:#6070a0;letter-spacing:2px;flex-shrink:0}
select{
  flex:1;background:transparent;color:var(--text);border:none;
  border-left:1px solid var(--border);padding:0 6px;
  font-family:'Share Tech Mono',monospace;font-size:11px;cursor:pointer;outline:none;min-width:0;
}
select option{background:#ffffff}
.schanel{flex:0 0 56px;border-left:1px solid var(--border);padding:0 6px;font-size:10px}
.tbtn{
  background:#eef0f6;border:1px solid #c0c8dc;color:#5060a0;
  font-family:'Share Tech Mono',monospace;font-size:9px;letter-spacing:1px;
  padding:3px 8px;cursor:pointer;transition:all .15s;flex-shrink:0;white-space:nowrap;
}
.tbtn.on{border-color:#2244cc;color:#2244cc;background:rgba(34,68,204,.08)}

/* ── Chord display ── */
.chord-section{
  text-align:center;margin-bottom:28px;min-height:120px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  width:100%;max-width:880px;
}
.chord-name{
  font-family:'Orbitron',monospace;font-weight:900;font-size:86px;line-height:1;
  color:#1a3a6a;letter-spacing:2px;
  transition:color .06s,font-size .1s;min-height:90px;
  display:flex;align-items:center;justify-content:center;
}
.chord-name.empty{font-size:14px;color:#a0aac0;font-family:'Share Tech Mono',monospace;text-shadow:none;letter-spacing:5px;font-weight:400}
.chord-name.flash{color:#2244cc}
.chord-sub{font-size:10px;color:#8090b8;letter-spacing:4px;min-height:14px}
.chord-sub.vis{color:#5060a0}
.notes-row{font-size:12px;color:#3366cc;opacity:.7;letter-spacing:4px;min-height:16px;transition:opacity .15s}
.notes-row.active{opacity:1}

/* ── Piano ── */
.piano-outer{
  width:100%;max-width:880px;overflow-x:auto;padding-bottom:14px;
  scrollbar-width:thin;scrollbar-color:#c0c8dc transparent;
}
.piano-outer::-webkit-scrollbar{height:3px}
.piano-outer::-webkit-scrollbar-thumb{background:#c0c8dc;border-radius:2px}
.piano{position:relative;display:inline-block}

.piano-toolbar{
  display:flex;align-items:center;gap:10px;margin-bottom:8px;
  width:100%;max-width:880px;
}
.piano-toolbar .hint{font-size:9px;color:#8090b8;letter-spacing:2px;flex:1}
.clear-btn{
  background:#eef0f6;border:1px solid #c0c8dc;color:#5060a0;
  font-family:'Share Tech Mono',monospace;font-size:9px;letter-spacing:2px;
  padding:4px 10px;cursor:pointer;transition:all .15s;
}
.clear-btn:hover{border-color:#2244cc;color:#2244cc;background:rgba(34,68,204,.06)}

.key-w{
  position:absolute;
  background:linear-gradient(to bottom,#f0f0f0 0%,#fafafa 40%,#ebebeb 100%);
  border:1px solid #aaa;border-top:none;border-radius:0 0 4px 4px;cursor:default;
  box-shadow:inset 0 -4px 6px rgba(0,0,0,.08),1px 3px 5px rgba(0,0,0,.12);z-index:1;
  transition:background .04s,box-shadow .04s;
}
.key-b{
  position:absolute;
  background:linear-gradient(to bottom,#222228 0%,#2e2e36 60%,#1a1a20 100%);
  border:1px solid #444;border-top:none;border-radius:0 0 3px 3px;cursor:default;
  box-shadow:0 4px 8px rgba(0,0,0,.5),inset 0 -2px 3px rgba(0,0,0,.4);z-index:2;
  transition:background .04s,box-shadow .04s;
}

/* Lit states - white keys */
.key-w.lit-midi{
  background:linear-gradient(to bottom,#ffcc44 0%,#ffdd88 60%,#ffbb00 100%);
  box-shadow:0 0 10px rgba(255,180,0,.4),inset 0 -3px 5px rgba(0,0,0,.1);
}
.key-w.lit-bank{
  background:linear-gradient(to bottom,#5588dd 0%,#6699ee 60%,#4477cc 100%);
  box-shadow:0 0 8px rgba(80,120,220,.4),inset 0 -3px 5px rgba(0,0,0,.1);
}
.key-w.lit-mark{
  background:linear-gradient(to bottom,#22ccaa 0%,#44ddbb 60%,#11aa88 100%);
  box-shadow:0 0 10px rgba(20,200,160,.4),inset 0 -3px 5px rgba(0,0,0,.1);
}
.key-w.lit-arp{
  background:linear-gradient(to bottom,#3366cc 0%,#5588ee 60%,#2255bb 100%) !important;
  box-shadow:0 0 12px rgba(50,100,200,.5),inset 0 -3px 5px rgba(0,0,0,.1) !important;
}

/* Lit states - black keys */
.key-b.lit-midi{
  background:linear-gradient(to bottom,#cc9900 0%,#aa7700 100%);
  box-shadow:0 0 8px rgba(180,130,0,.5),0 4px 8px rgba(0,0,0,.5);
}
.key-b.lit-bank{
  background:linear-gradient(to bottom,#2255bb 0%,#1144aa 100%);
  box-shadow:0 0 8px rgba(50,100,200,.5),0 4px 8px rgba(0,0,0,.5);
}
.key-b.lit-mark{
  background:linear-gradient(to bottom,#11aa88 0%,#008866 100%);
  box-shadow:0 0 10px rgba(20,180,140,.5),0 4px 8px rgba(0,0,0,.5);
}
.key-b.lit-arp{
  background:linear-gradient(to bottom,#2255bb 0%,#113399 100%) !important;
  box-shadow:0 0 12px rgba(50,100,200,.6),0 4px 8px rgba(0,0,0,.5) !important;
}

.c-label{
  position:absolute;bottom:6px;left:50%;transform:translateX(-50%);
  font-size:7px;font-family:'Share Tech Mono',monospace;color:rgba(0,0,0,.3);
  pointer-events:none;user-select:none;white-space:nowrap;
}
.key-w.lit-midi .c-label,.key-w.lit-arp .c-label{color:rgba(255,255,255,.7)}

/* ── Bottom panel ── */
.bottom-panel{display:flex;gap:10px;width:100%;max-width:880px;margin-top:10px;flex-wrap:wrap}
.panel{background:var(--surface);border:1px solid var(--border);padding:12px 13px}
.ptitle{font-size:8px;letter-spacing:4px;color:#1a3a6a;opacity:1;margin-bottom:10px;text-transform:uppercase}
.sublabel{font-size:8px;letter-spacing:3px;color:#6070a0;margin-bottom:5px;text-transform:uppercase}

/* Chord bank */
.cbpanel{flex:1;min-width:260px}
.roots-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:3px;margin-bottom:7px}
.types-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:3px;margin-bottom:10px}

.btn{
  background:#eef0f6;border:1px solid #c8d0e4;color:#5060a0;
  font-family:'Share Tech Mono',monospace;font-size:9px;padding:5px 2px;
  cursor:pointer;transition:all .1s;text-align:center;white-space:nowrap;overflow:hidden;
}
.btn:hover{border-color:#8090c0;color:#2a3a6a;background:#e0e6f4}
.btn.sel{border-color:#2244cc;color:#2244cc;background:rgba(34,68,204,.1)}
.btn.bk{color:#7080a8}
.btn.bk.sel{color:#2244cc}

/* Chord controls row */
.ccontrols{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.clabel{font-size:8px;color:#6070a0;letter-spacing:2px}
.oct-ctrl{display:flex;align-items:center;gap:4px}
.oct-ctrl button{
  background:#eef0f6;border:1px solid #c8d0e4;color:#5060a0;
  font-family:'Share Tech Mono',monospace;width:20px;height:20px;
  cursor:pointer;font-size:11px;display:flex;align-items:center;justify-content:center;
  transition:all .1s;
}
.oct-ctrl button:hover{border-color:#2244cc;color:#2244cc}
.oct-val{font-size:12px;color:#1a3a6a;width:18px;text-align:center}
.cval{font-size:11px;color:#1a3a6a;min-width:24px}

/* Range inputs */
input[type=range]{
  -webkit-appearance:none;height:2px;background:#c8d0e4;outline:none;cursor:pointer;
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:11px;height:11px;border-radius:50%;background:#2244cc;cursor:pointer;
}
input[type=range]::-moz-range-thumb{
  width:11px;height:11px;border-radius:50%;background:#2244cc;border:none;cursor:pointer;
}

/* Arp panel */
.arppanel{width:210px;flex-shrink:0}

/* Sound panel */
.soundpanel{width:130px;flex-shrink:0}
.voice-grid{display:grid;grid-template-columns:1fr;gap:3px}
.arp-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:3px;margin-bottom:8px}
.arp-grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:3px;margin-bottom:10px}
.arp-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:3px;margin-bottom:10px}
.bpmrow{display:flex;align-items:center;gap:8px;margin-bottom:12px}
.bpmval{font-size:13px;color:#1a3a6a;min-width:28px;text-align:right}
.arp-play-btn{
  width:100%;padding:10px;font-family:'Orbitron',monospace;font-weight:700;
  font-size:12px;letter-spacing:3px;background:#eef0f6;
  border:1px solid #c0c8dc;color:#5060a0;cursor:pointer;transition:all .2s;
}
.arp-play-btn.run{
  border-color:#22aa44;color:#22aa44;background:rgba(34,170,68,.06);
  animation:pulse 1.5s ease-in-out infinite;
}
.arp-play-btn:not(.run):hover{border-color:#2244cc;color:#2244cc;background:rgba(34,68,204,.06)}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.6}}

footer{margin-top:30px;font-size:8px;color:#8090b0;letter-spacing:3px;text-transform:uppercase}

/* ── Drum Machine ── */
.drum-panel{
  width:100%;max-width:880px;margin-top:10px;
  background:var(--surface);border:1px solid var(--border);padding:13px 14px;
}
.drum-header{display:flex;align-items:center;gap:12px;margin-bottom:12px;flex-wrap:wrap}
.drum-play-btn{
  font-family:'Orbitron',monospace;font-weight:700;font-size:11px;letter-spacing:3px;
  background:#eef0f6;border:1px solid #c0c8dc;color:#5060a0;
  padding:6px 14px;cursor:pointer;transition:all .2s;
}
.drum-play-btn.run{
  border-color:#cc2255;color:#cc2255;background:rgba(204,34,85,.05);
}
.drum-play-btn:not(.run):hover{border-color:#2244cc;color:#2244cc}
.drum-preset-sel{
  background:#ffffff;color:var(--text);border:1px solid var(--border);
  font-family:'Share Tech Mono',monospace;font-size:10px;padding:4px 7px;cursor:pointer;outline:none;
}
.drum-preset-sel option{background:#ffffff}
.drum-vol-row{display:flex;align-items:center;gap:7px;margin-left:auto}
.drum-vol-lbl{font-size:8px;color:#6070a0;letter-spacing:2px}
.drum-vol-val{font-size:10px;color:#1a3a6a;min-width:22px}

.drum-grid{display:flex;flex-direction:column;gap:4px}
.drum-row{display:flex;align-items:center;gap:5px}
.drum-name{
  font-size:8px;letter-spacing:1px;color:#6070a0;width:42px;flex-shrink:0;
  text-align:right;padding-right:6px;text-transform:uppercase;
}
.drum-steps{display:flex;gap:3px;flex:1;flex-wrap:nowrap}
.drum-step{
  flex:1;height:22px;min-width:0;border:1px solid #c8d0e4;background:#e8ecf4;
  cursor:pointer;transition:all .1s;border-radius:2px;position:relative;
}
.drum-step:hover{border-color:#8090c0;background:#dce4f4}
.drum-step.on{background:#2244cc;border-color:#1133aa}
.drum-step.on.kick  {background:#2255cc;border-color:#1144bb}
.drum-step.on.snare {background:#22aacc;border-color:#1188aa}
.drum-step.on.hat   {background:#cc2255;border-color:#aa1144}
.drum-step.on.ohat  {background:#8822cc;border-color:#6611aa}
.drum-step.on.clap  {background:#cc6622;border-color:#aa5511}
.drum-step.on.rim   {background:#22aa66;border-color:#118844}
.drum-step.on.perc  {background:#aa8822;border-color:#887711}
.drum-step.on.cymb  {background:#6622cc;border-color:#5511aa}
.drum-step.cur{outline:2px solid #2244cc;outline-offset:-1px}
.drum-step:nth-child(4n+1){margin-left:3px}
.drum-mute{
  width:18px;height:18px;flex-shrink:0;border:1px solid #c8d0e4;background:#eef0f6;
  cursor:pointer;font-size:8px;color:#8090b0;transition:all .1s;
  display:flex;align-items:center;justify-content:center;
}
.drum-mute:hover{border-color:#5060a0;color:#2a3a6a}
.drum-mute.m{border-color:#aaa;color:#aaa;background:#e0e0e8;text-decoration:line-through}