:root {
  --bg:#050505; --panel:rgba(5,5,5,.97);
  --b0:#141414; --b1:#1e1e1e; --b2:#2a2a2a;
  --ac:#8b5cf6; --acG:rgba(139,92,246,.22); --acD:rgba(139,92,246,.1);
  --cy:#22d3ee; --gr:#4ade80; --or:#fb923c;
  --tx:#f2f2f2; --md:#888; --dm:#3a3a3a;
}
*{margin:0;padding:0;box-sizing:border-box}
body{background:#000;color:var(--tx);font-family:'SF Mono','Fira Code',Consolas,monospace;font-size:11.5px;overflow:hidden;user-select:none;-webkit-user-select:none}
body.hide-cursor,body.hide-cursor *{cursor:none !important}
#cv{position:fixed;inset:0;width:100%;height:100%;cursor:crosshair;display:block}
#fluid-cv{position:fixed;inset:0;width:100%;height:100%;opacity:0;pointer-events:none;z-index:2;cursor:crosshair}

/* ENGINE GRID */
.egrid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:5px}
.ebtn{padding:7px 0;background:transparent;border:1px solid var(--b1);border-radius:5px;color:var(--dm);cursor:pointer;font-family:inherit;font-size:10px;letter-spacing:.3px;transition:all .15s;text-align:center;-webkit-appearance:none;appearance:none}
.ebtn:hover{border-color:var(--b2);color:var(--md)}
.ebtn.on{background:var(--acD);border-color:var(--ac);color:var(--ac)}
.sbtn{padding:7px 0;background:transparent;border:1px solid var(--b1);border-radius:5px;color:var(--dm);cursor:pointer;font-family:inherit;font-size:10px;letter-spacing:.3px;transition:all .15s;text-align:center;-webkit-appearance:none;appearance:none}
.sbtn:hover{border-color:var(--b2);color:var(--md)}
.sbtn.on{background:var(--acD);border-color:var(--ac);color:var(--ac)}

/* BUTTONS */
.floatbtn{position:fixed;top:13px;z-index:400;width:32px;height:32px;background:rgba(5,5,5,.9);border:1px solid var(--b1);border-radius:7px;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--dm);transition:color .18s,border-color .18s,opacity .3s;backdrop-filter:blur(10px)}
body.ui-off .floatbtn,body.ui-off #stag,body.ui-off #hud{opacity:0;pointer-events:none}
body.ui-off #sb{transform:translateX(100%)}
.floatbtn:hover{color:var(--md);border-color:var(--b2)}
#tbtn{right:13px} #tbtn svg{width:14px;height:14px;stroke-width:2}
#fsbtn{right:53px;font-size:13px}

/* STATUS */
#stag{position:fixed;top:13px;left:13px;z-index:400;padding:4px 9px;background:rgba(5,5,5,.9);border:1px solid var(--b1);border-radius:4px;font-size:9px;letter-spacing:2px;color:var(--dm);backdrop-filter:blur(8px);opacity:0;transition:opacity .3s;pointer-events:none}

/* SIDEBAR */
#sb{position:fixed;top:0;right:0;width:268px;height:100vh;background:var(--panel);backdrop-filter:blur(30px) saturate(1.5);border-left:1px solid var(--b0);overflow-y:auto;overflow-x:hidden;z-index:300;transform:translateX(0);transition:transform .35s cubic-bezier(.4,0,.2,1);scrollbar-width:thin;scrollbar-color:#181818 transparent}
#sb.off{transform:translateX(100%)}
#sb::-webkit-scrollbar{width:3px}
#sb::-webkit-scrollbar-thumb{background:#181818;border-radius:3px}

/* TOP BAR */
#topbar{height:2px;background:linear-gradient(90deg,#8b5cf6,#22d3ee,#4ade80,#fb923c,#8b5cf6);background-size:300% 100%;animation:flow 4s linear infinite}
@keyframes flow{to{background-position:-300% 0}}

/* HEADER */
.shead{padding:16px 16px 14px;display:flex;align-items:center;gap:10px;border-bottom:1px solid var(--b0)}
.logo{font-size:14px;font-weight:800;letter-spacing:4px;color:var(--tx);display:flex;align-items:center;gap:7px}
.ldot{width:7px;height:7px;border-radius:50%;background:var(--ac);box-shadow:0 0 8px var(--ac);animation:pdot 2s ease-in-out infinite;flex-shrink:0}
@keyframes pdot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.65)}}
.vtag{font-size:9px;letter-spacing:1.5px;color:var(--dm);margin-left:auto}

/* COLLAPSIBLE SECTIONS */
.sec{border-bottom:1px solid var(--b0)}
.sechd{padding:10px 16px;display:flex;align-items:center;gap:7px;cursor:pointer;transition:background .15s}
.sechd:hover{background:rgba(255,255,255,.02)}
.sico{font-size:11px;color:var(--dm);width:14px;text-align:center;flex-shrink:0}
.snm{font-size:9px;letter-spacing:2px;text-transform:uppercase;color:var(--dm);flex:1}
.sarr{font-size:8px;color:var(--dm);transition:transform .25s}
.secb{padding:0 16px 12px;overflow:hidden;max-height:600px;transition:max-height .3s ease,padding .3s ease}
.secb.shut{max-height:0;padding-bottom:0}


/* SLIDERS */
.pr{display:flex;align-items:center;gap:8px;margin-bottom:9px}
.pr:last-child{margin-bottom:0}
.pl{width:64px;flex-shrink:0;color:var(--md);font-size:10.5px}
.pv{width:32px;flex-shrink:0;text-align:right;color:var(--ac);font-size:10.5px}
input[type=range]{-webkit-appearance:none;appearance:none;flex:1;min-width:0;height:2px;border-radius:2px;outline:none;cursor:pointer;background:linear-gradient(to right,var(--ac) var(--fill,0%),var(--b1) var(--fill,0%))}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:11px;height:11px;border-radius:50%;background:var(--ac);cursor:pointer;box-shadow:0 0 7px var(--acG);transition:transform .1s}
input[type=range]:active::-webkit-slider-thumb{transform:scale(1.4)}
input[type=range]::-moz-range-thumb{width:11px;height:11px;border-radius:50%;background:var(--ac);border:none;cursor:pointer}

/* TOGGLES */
.tr{display:flex;align-items:center;justify-content:space-between;margin-bottom:9px}
.tr:last-child{margin-bottom:0}
.tl{color:var(--md);font-size:10.5px}
.sw{position:relative;width:30px;height:17px;flex-shrink:0}
.sw input{opacity:0;width:0;height:0}
.swt{position:absolute;inset:0;background:#111;border:1px solid var(--b1);border-radius:17px;cursor:pointer;transition:background .2s,border-color .2s}
.swt::before{content:'';position:absolute;width:11px;height:11px;border-radius:50%;background:#2e2e2e;top:2px;left:2px;transition:transform .2s,background .2s}
.sw input:checked+.swt{background:var(--acD);border-color:var(--ac)}
.sw input:checked+.swt::before{background:var(--ac);transform:translateX(13px);box-shadow:0 0 5px var(--acG)}


/* TAP BPM */
.taprow{display:flex;align-items:center;gap:8px;margin-top:8px}
.tapv{color:var(--cy);font-size:11px;min-width:36px}
.tapbtn{flex:1;padding:6px;background:transparent;border:1px solid var(--b1);border-radius:5px;color:var(--dm);font-family:inherit;font-size:10px;letter-spacing:1px;cursor:pointer;transition:all .15s}
.tapbtn:hover{border-color:var(--b2);color:var(--md)}
.tapbtn:active{background:var(--acD);border-color:var(--ac);color:var(--ac)}

/* AUDIO BARS */
.abars{display:flex;gap:3px;align-items:flex-end;height:24px;margin-top:8px}
.bar{flex:1;border-radius:2px 2px 0 0;min-height:2px;transition:height .06s}
.barB{background:var(--ac)} .barM{background:var(--cy)} .barT{background:var(--gr)}
.audnote{font-size:9px;color:var(--dm);margin-top:5px;line-height:1.6}

/* MIDI */
.midirow{display:flex;align-items:center;gap:8px;padding:8px 10px;background:rgba(255,255,255,.02);border:1px solid var(--b0);border-radius:6px}
.mdot{width:6px;height:6px;border-radius:50%;background:#1e1e1e;flex-shrink:0;transition:background .3s,box-shadow .3s}
.mdot.on{background:var(--gr);box-shadow:0 0 6px var(--gr)}
.mtxt{color:var(--dm);font-size:10.5px;flex:1}
.mbtn{padding:3px 8px;background:transparent;border:1px solid var(--b1);border-radius:4px;color:var(--dm);font-family:inherit;font-size:10px;cursor:pointer;transition:all .15s}
.mbtn:hover{border-color:var(--b2);color:var(--md)}
.mbtn:disabled{opacity:.35;cursor:default}

/* HINTS */
.sfoot{padding:11px 16px 22px;display:flex;flex-wrap:wrap;gap:8px 14px}
.hint{display:flex;align-items:center;gap:5px;color:var(--dm);font-size:9.5px}
kbd{padding:1px 5px;background:#0f0f0f;border:1px solid #1c1c1c;border-radius:3px;font-family:inherit;font-size:9px}

/* HUD */
#hud{position:fixed;bottom:12px;left:13px;z-index:50;display:flex;gap:14px;pointer-events:none}
.hi{font-size:9.5px;letter-spacing:.8px;color:#1e1e1e;font-family:'SF Mono',monospace;transition:color .3s}

/* ── MOBILE ─────────────────────────────────────── */
@media (max-width: 640px) {
  /* Bottom sheet panel */
  #sb {
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: auto;
    max-height: 82dvh;
    border-left: none;
    border-top: 1px solid var(--b1);
    border-radius: 14px 14px 0 0;
    transform: translateY(0);
  }
  #sb.off { transform: translateY(100%); }
  body.ui-off #sb { transform: translateY(100%); }

  /* Drag handle indicator */
  #sb::before {
    content: '';
    display: block;
    width: 40px;
    height: 4px;
    border-radius: 2px;
    background: var(--b2);
    margin: 10px auto 4px;
    pointer-events: none;
  }

  /* Float buttons — bottom corners, larger touch targets */
  .floatbtn {
    top: auto;
    bottom: calc(env(safe-area-inset-bottom, 0px) + 14px);
    width: 44px;
    height: 44px;
  }
  #tbtn  { right: 14px; }
  #fsbtn { right: 66px; }

  /* Status chip — top center */
  #stag { left: 50%; top: 14px; transform: translateX(-50%); }

  /* HUD — top left (above content) */
  #hud { bottom: auto; top: 14px; left: 14px; }

  /* No keyboard shortcuts on mobile */
  .sfoot { display: none; }

  /* Bigger tap targets */
  .ebtn { padding: 11px 0; font-size: 11px; }
  input[type=range] { height: 4px; }
  input[type=range]::-webkit-slider-thumb { width: 18px; height: 18px; }
  input[type=range]::-moz-range-thumb { width: 18px; height: 18px; border: none; }
  .sw { width: 36px; height: 22px; }
  .swt::before { width: 14px; height: 14px; }
  .sw input:checked + .swt::before { transform: translateX(14px); }
  .pl { font-size: 11px; }
  .pv { font-size: 11px; }
  .tl { font-size: 11px; }
}