:root{--bg:#0d0f1c;--panel:#161a2f;--line:#2b3056;--tx:#e9ebfa;--mut:#8f95b8;--acc:#ffc83d;--row:#12162b;--rowb:#0a0c19;color-scheme:dark}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{background:var(--bg);color:var(--tx);font:14px/1.35 system-ui,"Segoe UI",sans-serif;display:grid;grid-template-rows:auto minmax(0,1fr) auto;gap:8px;padding:8px;min-width:1100px;min-height:680px;overflow:hidden}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:8px 10px}
h1{font:700 16px ui-monospace,Menlo,Consolas,monospace;margin:0;color:var(--acc);letter-spacing:.5px;white-space:nowrap}
h2{font-size:12px;margin:0;color:var(--acc);text-transform:uppercase;letter-spacing:1px}
h3{margin:6px 0 2px;font-size:15px}
input,select,textarea,button{font:inherit;color:var(--tx);background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:3px 8px}
button{cursor:pointer}button:hover:not(:disabled),.btn:hover{border-color:var(--acc)}button:disabled{opacity:.35;cursor:default}
button:focus-visible,input:focus-visible,select:focus-visible,#dlg:focus-visible{outline:2px solid var(--acc);outline-offset:1px}
button.on{background:var(--acc);color:#1a1530;border-color:var(--acc);font-weight:700}
input[type=range]{padding:0;accent-color:var(--acc);vertical-align:middle}input[type=checkbox]{accent-color:var(--acc)}
input[type=number]{width:52px;padding:2px 4px}
label{color:var(--mut);display:inline-flex;gap:5px;align-items:center}
#top{display:flex;align-items:center;gap:8px 10px;flex-wrap:wrap}
#top #title{width:150px;font-weight:700}#bpm{width:56px}
.big{width:40px;height:32px;font-size:15px}
.grp{display:inline-flex;gap:4px;align-items:center;color:var(--mut)}.grp b{color:var(--tx);min-width:26px;text-align:center}
.grp button{padding:2px 7px}
.tg{padding:2px 7px;border:1px solid var(--line);border-radius:6px;cursor:pointer}.tg:has(input:checked){border-color:var(--acc);color:var(--tx);background:#1c2246}
.sp{flex:1}#saved{color:var(--mut);font-size:12px;white-space:nowrap}
#mon{display:inline-flex;align-items:center;gap:6px;padding:2px 8px;border:1px solid var(--line);border-radius:8px;background:var(--rowb);opacity:.6;transition:opacity .15s}
#mon.live{opacity:1;border-color:var(--acc)}#mon.acc{box-shadow:0 0 8px #ff3d6e88}
#mon .mb{fill:#1c2246;stroke:var(--acc);stroke-width:1.5}#mon .ma{stroke:var(--acc);stroke-width:2;stroke-linecap:round}#mon .mw{fill:var(--acc)}
.dots{display:inline-flex;gap:3px}.dots i{width:7px;height:7px;border-radius:50%;background:var(--line)}.dots i.cur{background:var(--acc);box-shadow:0 0 6px var(--acc)}.dots i.first.cur{background:#ff3d6e;box-shadow:0 0 6px #ff3d6e}
#monT{font:12px ui-monospace,monospace;min-width:54px;color:var(--tx)}#monB{font:12px ui-monospace,monospace;min-width:38px;color:var(--acc)}
#tdlg .trow{background:var(--row);border:1px solid var(--line);border-radius:8px;padding:4px 8px;margin:4px 0}
#tdlg .trow b{width:auto;color:var(--tx);text-transform:none;font-size:14px}
#tdlg .trow .hint{margin:0;flex:1}#tdlg .trow button{padding:2px 8px}
.mbar{width:70px;height:6px;border-radius:3px;background:var(--line);overflow:hidden}.mbar i{display:block;height:100%;width:0;background:var(--acc)}
main{display:grid;grid-template-columns:270px minmax(0,1fr);gap:8px;min-height:0}
#left{display:flex;flex-direction:column;gap:6px;min-height:0;overflow:auto}
.ph{display:flex;justify-content:space-between;align-items:center;gap:6px}
#center{position:relative;display:grid;grid-template-rows:auto minmax(0,1fr);gap:8px;min-height:0;min-width:0}
#rtool{display:flex;gap:6px 14px;align-items:center;flex-wrap:wrap;padding:5px 10px;min-width:0}
#st{color:var(--acc);font-size:12px}
.hint{color:var(--mut);font-size:12px;white-space:normal;margin:4px 0}
#rollBox{position:relative;min-height:0;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--rowb)}
#grid{display:block;position:absolute;inset:0;cursor:crosshair;touch-action:none}
#ph{position:absolute;top:0;bottom:0;width:2px;background:#ff3d6e;display:none;pointer-events:none}
#lens button{padding:1px 6px;margin-right:2px}
.trk{display:grid;grid-template-columns:1fr auto auto;grid-template-rows:auto auto;column-gap:4px;align-items:center;padding:4px 6px;border:1px solid var(--line);border-left:5px solid var(--c);border-radius:6px;cursor:pointer;opacity:.75;margin-bottom:4px}
.trk.sel{opacity:1;background:#1c2246}.trk small{grid-column:1;color:var(--mut)}.trk button{padding:1px 6px;grid-row:1/3}
#card{display:grid;gap:6px;padding-top:6px;border-top:1px solid var(--line)}
#card label{display:grid;grid-template-columns:70px 1fr;gap:6px}
#card input[type=text],#card select{width:100%;min-width:0}
#drawer{position:absolute;top:46px;right:0;bottom:0;width:390px;z-index:6;display:none;flex-direction:column;gap:6px;box-shadow:-8px 0 24px #000a;overflow:hidden}
#drawer.open{display:flex}#dbody{overflow:auto;min-height:0;flex:1;padding-right:4px}
.tabs{display:flex;gap:4px}.tabs button.on{background:var(--acc)}
.steps{display:flex;gap:4px;flex-wrap:wrap}.steps button{width:30px;padding:3px 0}.steps button.ok{border-color:#4fe3c1;color:#4fe3c1}.steps button.on{color:#1a1530;border-color:var(--acc)}
.task{color:var(--acc)}#lstat{font-weight:700;color:var(--mut)}#lstat.ok{color:#4fe3c1}
.nav{display:flex;gap:6px;margin-top:4px}
#chords,.earb{display:grid;grid-template-columns:repeat(2,1fr);gap:4px;margin-top:6px}
.ch{display:grid;grid-template-columns:1fr auto;gap:2px}.ch button{padding:5px 6px;text-align:left}
.earb button{padding:7px}.earb button.good{border-color:#4fe3c1;color:#4fe3c1}.earb button.bad{border-color:#ff5d8f;color:#ff9ab7}
#bottom{display:grid;gap:4px}.kh{display:flex;gap:14px;align-items:center}
#keys{height:120px;position:relative;user-select:none}
#keys.piano button{position:absolute;bottom:0;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;padding:4px 0;border-radius:0 0 6px 6px}
#keys.piano .w{top:0;width:calc(100%/8 - 3px);background:#e9ebf5;color:#222;border-color:#9aa}
#keys.piano .k{top:0;height:62%;width:calc(100%/8*.58);background:#1b1b26;color:#cfd;z-index:2}
#keys button.p,#keys button:active{filter:brightness(1.25);border-color:var(--acc);transform:translateY(2px)}
#keys.pads{display:grid;grid-template-columns:repeat(12,1fr);gap:6px}
#keys.pads button{display:flex;flex-direction:column;justify-content:center;align-items:center;font-size:12px}
kbd{font:11px ui-monospace,monospace;opacity:.7}
dialog{background:var(--panel);color:var(--tx);border:1px solid var(--line);border-radius:12px;width:min(860px,92vw);max-height:92vh;overflow:auto}
dialog::backdrop{background:#000a}
.sec{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin:8px 0}.sec b{width:130px;color:var(--acc);font-size:12px;text-transform:uppercase}
.btn{border:1px solid var(--line);border-radius:6px;padding:3px 8px;cursor:pointer;color:var(--tx)}
#out{width:100%;height:300px;font:12px ui-monospace,Menlo,Consolas,monospace}#msg{color:var(--mut);min-height:20px}
#demoList{display:grid;gap:5px;max-height:190px;overflow:auto;margin:4px 0 8px;padding-right:2px}
.demo{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:6px 8px;border:1px solid var(--line);border-radius:8px;background:var(--row)}
.demo>span{min-width:0}.demo b{display:block;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.demo small{display:block;color:var(--mut);font-size:11px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.demo .dbtns{display:flex;gap:4px;flex:none}.demo button{padding:2px 8px}.demo .del{padding:2px 6px;color:var(--mut)}
#tt{position:fixed;inset:auto;margin:0;border:1px solid var(--acc);background:#0b0d1cf2;color:var(--tx);padding:5px 9px;border-radius:7px;max-width:300px;font-size:12px;pointer-events:none}
/* ---- Lecciones: fichas de nota, cajas, figuras, ejemplos ---- */
#drawer{width:440px}
.nt{display:inline-flex;flex-direction:column;align-items:center;padding:2px 7px;margin:1px 2px;border-radius:8px;background:color-mix(in srgb,var(--c) 22%,var(--panel));border:1px solid var(--c);font-weight:700;line-height:1.15}
.nt small{font-weight:400;font-size:10px;opacity:.9}
.notes12{display:flex;flex-wrap:wrap;gap:2px;align-items:center;margin:8px 0}
.pulse{display:flex;gap:6px;margin:8px 0;flex-wrap:wrap}.pulse i{font-style:normal;min-width:34px;text-align:center;padding:6px 4px;border-radius:6px;background:#1c2246;border:1px solid var(--line)}
.pulse i.a{background:#ff3d6e33;border-color:#ff3d6e}.pulse.st i.s{background:#4fe3c133;border-color:#4fe3c1}.pulse.st i{border-color:#ffc83d66}
.figs div{padding:4px 8px;margin:3px 0;border-radius:6px;background:linear-gradient(90deg,#ffc83d77 var(--w),#1c2246 var(--w));border:1px solid var(--line);font-size:12px}
.ivs{display:grid;gap:5px;margin:8px 0}.iv{padding:5px 8px;border-left:5px solid var(--c);background:#1c2246;border-radius:6px;font-size:13px}
.stack{display:flex;gap:4px;align-items:flex-end;margin:8px 0}.stack.row{flex-wrap:wrap}
.box{padding:7px 10px;margin:8px 0;border-radius:8px;background:#1c2246;border:1px solid var(--line);font-size:13px}.box.tip{border-color:var(--acc)}.box.warn{border-color:#ff9a6b}
.exc{border:1px solid var(--line);border-radius:10px;padding:8px 10px;margin:8px 0;background:var(--row)}
.tag{display:inline-block;font-size:11px;padding:1px 8px;border-radius:99px;background:var(--acc);color:#1a1530;margin-right:6px;font-weight:700}
.how{margin:6px 0;padding-left:20px;font-size:13px}.how li{margin:4px 0}
.dots2{display:flex;gap:5px;justify-content:center;align-items:center}.dots2 i{width:8px;height:8px;border-radius:50%;background:var(--line)}.dots2 i.on{background:var(--acc)}
.r{color:#ff3d6e;font-weight:700}
.chh{width:100%;text-align:left;margin-top:5px;padding:6px 8px}.chh.open{border-color:var(--acc)}.chh small{color:var(--mut)}
.lh{display:flex;align-items:center;gap:8px;margin:6px 0 2px}.lh b{font-size:12px;color:var(--mut)}
#sync{width:100%;text-align:left}
#kfb{font-weight:700;color:var(--acc);font-size:13px}
#keys.piano .k{font-size:11px;line-height:1.1}#keys.piano .k b{display:block}
.pbar{height:5px;border-radius:3px;background:var(--line);margin:4px 0}.pbar i{display:block;height:100%;background:var(--acc);border-radius:3px}