:root{color-scheme:dark;--bg:#101819;--panel:#192324;--line:#334041;--text:#edf1e9;--muted:#a3b1ad;--lime:#d2ee93;--teal:#83cfc7;--orange:#ecc08b}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.55 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}header{max-width:1440px;margin:auto;padding:25px 38px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}.brand{display:flex;gap:12px;align-items:center;color:var(--text);text-decoration:none;font-size:15px;font-weight:750;letter-spacing:1.5px}.brand small{display:block;font-size:11px;font-weight:400;letter-spacing:.4px;color:var(--muted)}.logo{background:var(--lime);color:var(--bg);border-radius:12px;width:43px;height:43px;text-align:center;font-size:33px;line-height:43px}.badge,.pill{font-size:10px;letter-spacing:1.5px;border:1px solid var(--line);padding:7px 12px;border-radius:20px;color:var(--muted)}main{max-width:1440px;margin:auto;padding:34px 38px}.intro{display:flex;align-items:center;justify-content:space-between;margin-bottom:30px}h1{font-size:clamp(28px,3.3vw,46px);line-height:1.15;letter-spacing:-1.8px;margin:8px 0 12px}h2{font-size:21px;letter-spacing:-.5px;margin:5px 0 13px}h3{margin:7px 0;font-size:22px}p{color:var(--muted);margin:8px 0 16px}.eyebrow{font-size:10px;font-weight:750;letter-spacing:2px;color:var(--lime)}.stats{max-width:210px;font-size:12px;color:var(--muted);text-align:right}nav{display:flex;gap:6px;border-bottom:1px solid var(--line);margin-bottom:28px;overflow:auto}.tab{border:0!important;background:transparent!important;border-radius:0!important;padding:12px 20px!important;white-space:nowrap;color:var(--muted)!important}.tab.active{color:var(--lime)!important;border-bottom:2px solid var(--lime)!important}.room{display:grid;grid-template-columns:280px minmax(0,1fr);gap:22px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:17px;padding:24px}.settings{align-self:start}.workspace{display:flex;flex-direction:column;gap:20px;min-width:0}label{display:block;font-size:12px;color:var(--muted);margin-bottom:15px}select,input,textarea,button{font:inherit}select,textarea{width:100%;background:#101a1b;color:var(--text);border:1px solid #415050;border-radius:8px;padding:10px;margin-top:6px}input[type=range]{display:block;width:100%;accent-color:var(--lime);margin:13px 0}input[type=checkbox]{accent-color:var(--lime);margin-right:6px}.checks{display:grid;grid-template-columns:1fr 1fr}.checks label{font-size:12px}.pair{display:grid;grid-template-columns:1fr 1fr;gap:15px}#bpmText{display:block;color:var(--text);font-size:18px;margin-top:4px}button{cursor:pointer;border:1px solid var(--line);border-radius:9px;padding:10px 16px;color:var(--text);transition:background .15s,transform .15s}button:hover{filter:brightness(1.15)}button:focus-visible,select:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--lime);outline-offset:3px}button:disabled{opacity:.45;cursor:default}.primary{background:var(--lime);border-color:var(--lime);color:#152017;font-weight:750}.secondary{background:#293839}.subtle{background:transparent;font-size:12px;color:var(--muted)}.wide{width:100%;margin-bottom:10px}.section-head{display:flex;align-items:center;justify-content:space-between;gap:14px}.chord-strip{display:flex;gap:9px;margin:16px 0;flex-wrap:wrap}.chord-card{background:#111b1c;flex:1;min-width:64px;padding:12px 8px;border-radius:10px;text-align:center;position:relative}.chord-card strong{display:block;font-size:23px}.chord-card span{font-size:11px;color:var(--muted)}.chord-card.active{background:#d2ee9312;border-color:var(--lime);box-shadow:inset 0 -3px var(--lime)}.chord-card.active strong{color:var(--lime)}.transport-row{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-top:18px}#playStatus{font-size:12px;color:var(--muted)}.beats{display:flex;gap:8px}.beats i{width:9px;height:9px;background:#455250;border-radius:50%}.beats i.on{background:var(--lime);box-shadow:0 0 14px #d2ee9355}details{font-size:12px;color:var(--muted)}summary{cursor:pointer}.editor{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}.editor label{width:88px;margin:0}.editor select{padding:7px}.compact{max-width:160px;margin:0}.compact select{padding:6px}.target-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:16px}.muted{font-size:12px;color:var(--muted)}.big-chord{font-size:54px;font-weight:650;line-height:1.3;letter-spacing:-2px}.note-pills{display:flex;gap:8px;flex-wrap:wrap}.note-pill{background:#2d4140;border:1px solid #4b6863;border-radius:9px;padding:6px 12px;color:var(--teal);font-weight:650}.note-pill small{display:block;font-size:9px;font-weight:400}.note-pill.root{background:#d2ee9312;color:var(--lime);border-color:#71824e}.next-box{border-left:1px solid var(--line);padding-left:23px}.next-box h3{font-size:31px}.tip{font-size:12px}.coach{font-size:13px;color:var(--text);border-top:1px solid var(--line);padding-top:16px;margin:20px 0 0}.board-options{display:flex;gap:12px;flex-wrap:wrap}.board-options label{flex:1;min-width:125px}.fret-scroll{overflow-x:auto;padding:5px 0 12px}.fretboard{min-width:490px;display:grid;gap:0}.fret-cell{height:43px;border-right:2px solid #586362;display:flex;align-items:center;justify-content:center;background:linear-gradient(transparent 49%,#687370 49%,#687370 51%,transparent 51%)}.fret-cell.nut{border-right:5px solid #bcc3b9}.fret-label{text-align:center;color:var(--muted);font-size:11px;padding:5px}.string-label{display:flex;align-items:center;font-size:12px;color:var(--muted)}.fret-note{font-size:11px;padding:0;min-width:29px;height:29px;border-radius:50%;background:#243331;color:#91a5a0;border:1px solid #52635f}.fret-note.chord{background:var(--teal);color:#112724;border-color:var(--teal);font-weight:700}.fret-note.root{background:var(--lime);color:#25301b;border-color:var(--lime);font-weight:700}.fret-note.dim{opacity:.3}.legend{display:flex;gap:16px;flex-wrap:wrap;font-size:10px;color:var(--muted);margin-top:12px}.legend span{display:flex;align-items:center;gap:6px}.dot{width:9px;height:9px;display:inline-block;border-radius:50%}.dot.root{background:var(--lime)}.dot.chord{background:var(--teal)}.dot.scale{background:#52635f}.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin:22px 0}.lesson-card{padding:25px;background:var(--panel);border:1px solid var(--line);border-radius:15px}.lesson-card h3{font-size:22px}.lesson-card p,.lesson-card li{font-size:14px;color:var(--muted)}.lesson-card ul{padding-left:20px}.lesson-card pre{overflow:auto;background:#101819;padding:15px;border-radius:8px;font-size:13px;line-height:1.75;color:var(--teal)}.lesson-card .tag{font-size:10px;color:var(--orange);letter-spacing:1px}.routine{display:flex;justify-content:space-between;align-items:center}.routine h2{font-size:42px}.journal{margin-top:22px}.entry{border-top:1px solid var(--line);padding:14px 0;white-space:pre-wrap;overflow-wrap:anywhere}.entry small{display:block;color:var(--lime)}.ear-panel{max-width:740px;margin:35px auto;padding:38px}.ear-answers{display:flex;gap:12px;margin-top:28px}footer{border-top:1px solid var(--line);margin-top:38px;padding:20px 0;display:flex;justify-content:space-between;gap:15px;font-size:11px;color:var(--muted)}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:var(--lime);color:#142019;padding:12px 22px;border-radius:8px;display:none;z-index:10} [hidden]{display:none!important}@media(max-width:950px){.room{grid-template-columns:230px minmax(0,1fr)}main,header{padding:22px}.panel{padding:18px}.target-grid{gap:12px}.note-pill{padding:6px 9px}}@media(max-width:720px){.room{grid-template-columns:1fr}.settings{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}.settings>.eyebrow,.settings>h2,.settings>.pair,.settings>.checks{grid-column:1/-1}.card-grid{grid-template-columns:1fr}.badge,.stats{display:none}h1{font-size:34px}.tab{padding:12px!important;font-size:13px}main,header{padding:18px}.big-chord{font-size:43px}.section-head{align-items:flex-start}.target-grid{grid-template-columns:1fr 1fr}.next-box{padding-left:14px}footer{flex-direction:column}.routine{flex-direction:column;align-items:flex-start}.board-options label{min-width:100px}.ear-panel{padding:22px}.ear-answers{flex-wrap:wrap}}