:root{color-scheme:dark;--bg:#080a12;--panel:#101522;--line:#273149;--muted:#8b98ad;--text:#f5f7fb;--cyan:#39e7ff;--purple:#966bff;--green:#5cffaa;--danger:#ff557d}*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:radial-gradient(circle at 80% -10%,#18254c 0,transparent 35%),var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif}button,input,select{font:inherit}.topbar{height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(18px,4vw,56px);border-bottom:1px solid #1b2233;background:#080a12cc;backdrop-filter:blur(14px);position:sticky;top:0;z-index:10}.brand{display:flex;gap:12px;align-items:center}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--cyan),var(--purple));font-weight:900;color:#071019;box-shadow:0 0 28px #39e7ff55}.brand div{display:flex;flex-direction:column;letter-spacing:.12em}.brand small{font-size:.68rem;color:var(--muted);margin-top:2px}.ghost,.primary,.icon-button{border:1px solid var(--line);border-radius:10px;padding:10px 14px;color:var(--text);background:#121826;cursor:pointer}.primary{border:0;background:linear-gradient(135deg,#18bfd5,#7357ef);font-weight:800;box-shadow:0 8px 30px #3f66f52e}.icon-button{width:44px}.ghost:hover,.icon-button:hover{border-color:#52617c}main{padding:28px clamp(14px,3vw,42px) 54px}.controls{max-width:1500px;margin:0 auto 22px;display:grid;grid-template-columns:repeat(8,minmax(120px,1fr));gap:10px;background:#0d111ccc;border:1px solid #20283a;border-radius:16px;padding:14px}.controls label{display:flex;flex-direction:column;gap:7px;color:var(--muted);font-size:.78rem;font-weight:700;letter-spacing:.04em}.controls select,.controls input[type=number]{width:100%;min-height:42px;background:#161c2a;color:var(--text);border:1px solid #2b354a;border-radius:9px;padding:8px 10px}.bpm-input{display:flex;align-items:center;gap:9px;height:42px}.bpm-input input{min-width:70px;accent-color:var(--cyan)}.bpm-input output{font-weight:900;color:var(--cyan);font-size:1rem}.stage{--stage-ratio:16/9;max-width:1500px;aspect-ratio:var(--stage-ratio);min-height:620px;margin:auto;background:linear-gradient(145deg,#0e1320 0%,#090c14 60%,#101327 100%);border:1px solid #28324a;border-radius:20px;padding:clamp(20px,3vw,44px);display:flex;flex-direction:column;gap:clamp(16px,2vw,26px);overflow:hidden;position:relative;box-shadow:0 28px 90px #0008}.stage:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent 49.8%,#ffffff06 50%,transparent 50.2%),linear-gradient(#ffffff04 1px,transparent 1px);background-size:100% 100%,100% 54px;pointer-events:none}.stage.vertical{--stage-ratio:9/16;max-width:620px;min-height:960px}.stage-head,.transport,.now-playing,.tab-shell,.stage-footer{position:relative;z-index:1}.stage-head{display:flex;align-items:flex-start;justify-content:space-between}.eyebrow{font-size:.75rem;letter-spacing:.2em;color:var(--cyan);font-weight:900}.stage h1{font-size:clamp(1.65rem,3.3vw,3.5rem);margin:7px 0 0;letter-spacing:-.04em}.tempo{display:flex;flex-direction:column;align-items:flex-end}.tempo strong{font-size:clamp(2rem,4vw,4.2rem);line-height:.8;color:var(--cyan)}.tempo span{font-size:.72rem;letter-spacing:.17em;color:var(--muted);margin-top:9px}.transport{display:flex;align-items:center;gap:12px}.progress{height:5px;flex:1;border-radius:99px;background:#252d3e;overflow:hidden}.progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--cyan),var(--purple));transition:width .15s linear}.transport #counter{font-variant-numeric:tabular-nums;color:var(--muted);min-width:68px;text-align:right}.fretboard-shell{position:relative;z-index:1;background:#080a11;border:1px solid #222c3f;border-radius:14px;padding:16px 12px;box-shadow:inset 0 0 42px #000}.fretboard{width:100%;height:auto;display:block;overflow:visible}.fretboard .string{stroke:#8893a5}.fretboard .fret{stroke:#445069}.fretboard .fret-number{fill:#69768c;font-size:11px;text-anchor:middle}.fretboard .note{fill:#1a2233;stroke:#536077;stroke-width:1.5;transition:.12s}.fretboard .note.in-scale{fill:#19283b;stroke:#43839a}.fretboard .note.root{fill:#293058;stroke:var(--purple)}.fretboard .note.active{fill:var(--cyan);stroke:#d8fbff;stroke-width:2;filter:drop-shadow(0 0 8px var(--cyan))}.fretboard .note-text{fill:#dce7f6;font-size:11px;text-anchor:middle;dominant-baseline:central;font-weight:800;pointer-events:none}.fretboard .note-text.active{fill:#071019}.now-playing{display:grid;grid-template-columns:1fr 1fr 1.4fr;border:1px solid #263047;border-radius:13px;background:#111725aa}.now-playing>div{padding:14px 20px;display:flex;align-items:center;justify-content:space-between;border-right:1px solid #263047}.now-playing>div:last-child{border:0}.now-playing span{font-size:.68rem;letter-spacing:.14em;color:var(--muted);font-weight:800}.now-playing strong{font-size:clamp(1.15rem,2vw,1.8rem);color:var(--green)}.tab-shell{display:flex;gap:12px;align-items:stretch}.tab-label{display:grid;place-items:center;background:#1c2638;color:var(--cyan);border-radius:8px;padding:8px;font-weight:900;letter-spacing:.1em}.tablature{min-width:0;flex:1;display:grid;grid-template-rows:repeat(6,1fr);font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:clamp(.67rem,1.15vw,1rem);overflow:hidden}.tab-row{white-space:nowrap;color:#7d899d;line-height:1.45}.tab-token{display:inline-block;min-width:2.25ch;text-align:center}.tab-token.active{color:var(--cyan);text-shadow:0 0 10px var(--cyan);font-weight:900}.stage-footer{margin-top:auto;padding-top:12px;border-top:1px solid #252e41;display:flex;justify-content:space-between;font-size:.66rem;letter-spacing:.16em;color:#758197;font-weight:800}dialog{width:min(460px,calc(100% - 30px));border:1px solid #33405a;border-radius:16px;background:#111724;color:var(--text);padding:0;box-shadow:0 30px 100px #000}dialog::backdrop{background:#02040bcc;backdrop-filter:blur(6px)}dialog form{padding:25px}dialog h2{margin-top:0}dialog p{color:#aab4c4;line-height:1.6}.dialog-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:22px}.recording .topbar,.recording .controls{display:none}.recording main{padding:0;min-height:100vh;display:grid;place-items:center}.recording .stage{border-radius:0;border:0;width:100%;max-width:none;height:100vh;aspect-ratio:auto}.recording .stage.vertical{width:min(56.25vh,100vw);height:100vh}.recording .transport .icon-button{display:none}@media(max-width:1100px){.controls{grid-template-columns:repeat(4,1fr)}.stage{min-height:590px}}@media(max-width:650px){.topbar{height:64px}.topbar .ghost{font-size:.8rem;padding:8px 10px}.controls{grid-template-columns:repeat(2,1fr)}main{padding:16px 10px 34px}.stage,.stage.vertical{min-height:720px;aspect-ratio:auto;padding:20px 14px;border-radius:15px}.stage h1{font-size:1.7rem}.tempo strong{font-size:2.2rem}.transport{flex-wrap:wrap}.progress{order:3;flex-basis:100%}.now-playing{grid-template-columns:1fr}.now-playing>div{border-right:0;border-bottom:1px solid #263047;padding:10px 14px}.fretboard-shell{overflow-x:auto}.fretboard{min-width:700px}.stage-footer{font-size:.55rem}.tab-token{min-width:2ch}}.audio-toggle{border:1px solid #2b354a;border-radius:9px;padding:9px 11px;background:#101624;color:#8995a8;cursor:pointer;white-space:nowrap}.audio-toggle.active{color:#071019;background:var(--green);border-color:var(--green);font-weight:800}.volume-control{display:flex;align-items:center;gap:7px;color:var(--muted);font-size:.7rem}.volume-control input{width:72px;accent-color:var(--cyan)}@media(max-width:850px){.volume-control{width:100%}.volume-control input{flex:1}.transport .progress{order:5;flex-basis:100%}}