@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,wght@0,500;0,600;0,700;1,600&family=DM+Sans:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600;700&display=swap');
:root{font-family:'DM Sans',sans-serif;font-synthesis:none;color-scheme:dark;--bg:#15191c;--sidebar:#101416;--panel:#20272b;--raised:#2b353a;--text:#edf1ed;--muted:#b0babc;--line:#48575c;--accent:#d7f87b;--accent-text:#1b2b12;--accent-soft:#313e2c;--secondary:#72d7dc;--focus:#9de6ee;--shadow:0 10px 35px #00000016;--base:#39474b;--base-text:#f4f7f8;--added:#72d7dc;--added-text:#143032;--signature:#f4ad73;--signature-text:#332315;--blue:#b7baff;--blue-text:#22214b;--chord:#c79fff;--chord-text:#2c173e;--fret:#65777d}
:root[data-theme=midnight]{--bg:#101726;--sidebar:#0b1220;--panel:#192338;--raised:#26334b;--text:#edf3ff;--muted:#acbbd5;--line:#435877;--accent:#93c2ff;--accent-text:#102443;--accent-soft:#263d5e;--secondary:#82dfd2;--focus:#a6caff;--base:#354563;--added:#82dfd2;--added-text:#14372e;--signature:#f2bd7b;--signature-text:#3b2812;--blue:#cdb5ff;--blue-text:#2e1e46;--chord:#ffb4d6;--chord-text:#48223c;--fret:#6b809f}
:root[data-theme=ember]{--bg:#201a19;--sidebar:#171312;--panel:#2d2523;--raised:#3c302c;--text:#fff1e8;--muted:#c9b4aa;--line:#70554b;--accent:#ffb676;--accent-text:#3d2010;--accent-soft:#503429;--secondary:#8bddd1;--focus:#ffd4af;--base:#544038;--added:#8bddd1;--added-text:#183832;--signature:#d4b4ff;--signature-text:#362047;--blue:#9dc8ff;--blue-text:#172e4e;--chord:#f1d779;--chord-text:#372e13;--fret:#987d70}
:root[data-theme=daylight]{color-scheme:light;--bg:#f3f6fb;--sidebar:#ffffff;--panel:#ffffff;--raised:#e9eef7;--text:#1b2940;--muted:#516078;--line:#b8c5d8;--accent:#3156bf;--accent-text:#ffffff;--accent-soft:#e4ebfc;--secondary:#126b72;--focus:#244aaa;--shadow:0 10px 35px #21385b09;--base:#e2e9f4;--base-text:#23334c;--added:#087b7e;--added-text:#ffffff;--signature:#ad4e17;--signature-text:#ffffff;--blue:#7250b8;--blue-text:#ffffff;--chord:#8b3d82;--chord-text:#ffffff;--fret:#8999b0}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-size:16px;line-height:1.5}button,select,input{font:inherit}button,select{cursor:pointer}button{color:inherit;border:0;transition:background .15s,border-color .15s,transform .15s}button:hover{filter:brightness(1.07)}button:active{transform:translateY(1px)}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible,select:focus-visible,input:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--focus);outline-offset:4px}a{color:inherit;text-decoration:none}h1,h2,h3,.brand,.chord-card strong{font-family:'Space Grotesk',sans-serif}h1{font-size:clamp(2.1rem,3.8vw,3.8rem);line-height:1.1;letter-spacing:-.045em;margin:12px 0 16px;font-weight:500}h2{font-size:1.7rem;line-height:1.2;letter-spacing:-.03em;margin:8px 0 18px}h3{font-size:1.15rem}p{line-height:1.65}button,select{max-width:100%}[hidden]{display:none!important}
.app{display:grid;grid-template-columns:250px minmax(0,1fr);max-width:1800px;margin:auto;min-height:100vh}.sidebar{padding:35px 22px;background:var(--sidebar);border-right:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;font-size:1.35rem;font-weight:700;letter-spacing:-.04em;white-space:nowrap}.brand-mark{width:32px;height:32px;flex-shrink:0;color:var(--accent)}.sidebar-caption{color:var(--muted);font-size:.75rem;letter-spacing:.12em;margin-top:12px}.scale-nav{margin-top:54px}.nav-group+.nav-group{margin-top:30px}.nav-group h2{font-family:'DM Sans',sans-serif;font-size:.75rem;letter-spacing:.12em;font-weight:600;text-transform:uppercase;color:var(--muted);margin:0 12px 12px}.nav-group>div{display:grid;gap:6px}.scale-link{background:transparent;border:1px solid transparent;border-radius:10px;text-align:left;padding:13px 14px;position:relative}.scale-link strong{display:block;font-weight:500;font-size:1rem}.scale-link small{display:block;font-size:.8rem;color:var(--muted);margin-top:3px}.scale-link[aria-current=page]{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}.scale-link[aria-current=page] small{color:var(--text)}.sidebar-footer{margin:45px 12px 0;border-top:1px solid var(--line);padding-top:24px;color:var(--muted);font-size:.875rem}.tuning-mark{letter-spacing:.24em;font-size:.75rem}.sidebar-footer p{line-height:1.8}
main{padding:25px 38px 0;min-width:0}header{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}.breadcrumb{font-size:.75rem;letter-spacing:.1em;color:var(--muted)}.breadcrumb span{margin-left:10px}#practiceName{color:var(--text);letter-spacing:0}.appearance{display:flex;align-items:center;gap:10px}.appearance-label{font-size:.75rem;color:var(--muted)}#themeChoices{display:flex;gap:4px;padding:4px;border:1px solid var(--line);border-radius:10px;background:var(--sidebar)}.theme-button{background:transparent;display:flex;gap:6px;align-items:center;border-radius:6px;border:1px solid transparent;padding:6px 8px;font-size:.75rem}.theme-button[aria-pressed=true]{background:var(--raised);border-color:var(--muted)}.theme-swatch{display:block;width:12px;height:12px;flex-shrink:0;border-radius:50%;border:1px solid #ffffff55}.theme-swatch.studio{background:#d7f87b}.theme-swatch.midnight{background:#93c2ff}.theme-swatch.ember{background:#ffb676}.theme-swatch.daylight{background:#fff;border-color:#8090ab}.title-row{display:flex;justify-content:space-between;align-items:center;gap:25px;margin:48px 0 30px}.title-row>div:first-child{min-width:0}.eyebrow{font-size:.75rem;text-transform:uppercase;letter-spacing:.13em;font-weight:700;color:var(--accent)}.subtitle{color:var(--muted);max-width:760px;margin:0}.session-badge{width:94px;height:104px;flex-shrink:0;border:1px solid var(--accent);border-radius:20px;background:var(--accent-soft);display:flex;flex-direction:column;justify-content:center;align-items:center;color:var(--accent);transform:none}.session-badge span{font-family:'Space Grotesk';font-size:3rem;line-height:1.2}.session-badge small{font-size:.75rem;letter-spacing:.1em}
.tabs{display:flex;gap:30px;border-bottom:1px solid var(--line);margin-bottom:25px;flex-wrap:wrap}.tabs button{background:transparent;color:var(--muted);padding:14px 0;font-size:.95rem;border-bottom:2px solid transparent}.tabs button[aria-selected=true]{color:var(--accent);border-color:var(--accent)}.key-strip{display:flex;align-items:center;gap:18px;margin-bottom:25px;flex-wrap:wrap}.key-strip label,.view-label{display:grid;gap:7px;font-size:.75rem;letter-spacing:.1em;color:var(--muted)}select{color:var(--text);background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:11px 32px 11px 12px;min-height:44px;font-size:.95rem;letter-spacing:0}.key-summary{border-left:1px solid var(--line);padding-left:22px;max-width:100%}#scaleLabel{font-size:.8rem;color:var(--muted)}#scaleNotes{display:flex;gap:15px;margin-top:8px;flex-wrap:wrap;font-family:'Space Grotesk';font-size:1.05rem}#scaleNotes>span{display:grid;text-align:center;gap:2px}#scaleNotes small{font-family:'DM Sans';font-size:.75rem;color:var(--muted)}.scale-root{color:var(--accent)}.scale-color{color:var(--secondary)}
.practice-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(270px,1fr);gap:20px}.panel{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:26px;margin-bottom:20px;min-width:0;box-shadow:var(--shadow)}.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:15px}.pill{font-size:.75rem;color:var(--muted);border:1px solid var(--line);padding:6px 10px;border-radius:30px;white-space:nowrap}.sound-controls{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:8px 0 22px}.sound-controls>label{font-size:.875rem;color:var(--muted)}.sound-controls>select{flex:1;min-width:0}#bluesChordControl{display:flex;align-items:center;gap:12px;flex-wrap:wrap;width:100%;margin-top:7px}#bluesChordNames{color:var(--muted);font-size:.8rem}.check-row{display:flex;align-items:center;gap:9px;font-size:.9rem;color:var(--text);letter-spacing:0}.check-row input{width:18px;height:18px;accent-color:var(--accent);flex-shrink:0}.loop-choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-bottom:22px}.loop-choices-label{grid-column:1/-1;color:var(--muted);font-size:.75rem;text-transform:uppercase;letter-spacing:.11em;margin-bottom:2px}.loop-choice{text-align:left;background:var(--raised);border:1px solid var(--line);border-radius:8px;padding:11px 12px;min-width:0}.loop-choice strong{display:block;font-family:'Space Grotesk';font-size:.95rem;font-weight:500}.loop-choice small{display:block;font-size:.8rem;color:var(--muted);line-height:1.4;margin-top:4px}.loop-choice[aria-pressed=true]{border-color:var(--accent);background:var(--accent-soft)}.loop-choice[aria-pressed=true] strong{color:var(--accent)}.blues-choices{grid-template-columns:repeat(3,minmax(0,1fr))}
.progression{display:flex;gap:10px;flex-wrap:wrap}.chord-card{position:relative;background:var(--raised);border:1px solid var(--line);border-radius:9px;padding:15px 13px;flex:1;min-width:76px;text-align:left}.chord-card strong{font-size:1.8rem;display:block;line-height:1.15}.chord-card small{display:block;color:var(--muted);margin-top:9px;font-size:.8rem}.chord-card.home{background:var(--accent-soft);border-color:var(--accent)}.chord-card.home strong{color:var(--accent)}.chord-card.selected{outline:2px solid var(--secondary);outline-offset:2px}.chord-card.playing{box-shadow:inset 0 -4px var(--accent);background:var(--accent-soft)}.progression.blues-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}.blues-grid .chord-card{min-width:0;padding:13px 9px}.blues-grid .chord-card strong{font-size:1.5rem}.muted{color:var(--muted)}.small{font-size:.875rem}#loopInstruction{font-size:.95rem;margin:20px 0}.transport{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:23px}.primary{background:var(--accent);color:var(--accent-text);padding:13px 17px;border-radius:8px;font-size:.95rem;font-weight:700}.small-btn{background:var(--raised);border:1px solid var(--line);border-radius:7px;padding:10px 12px;font-size:.875rem}
.tempo-panel{margin-top:20px;padding:18px;background:var(--raised);border:1px solid var(--line);border-radius:10px}.tempo-head{display:flex;justify-content:space-between;align-items:baseline;gap:20px;margin-bottom:12px}.tempo-head label{font-family:'Space Grotesk';font-size:1rem;font-weight:500}.tempo-head output{font-family:'Space Grotesk';font-size:1.5rem;font-weight:500;color:var(--accent);white-space:nowrap}#tempo{display:block;width:100%;height:25px;margin:0;accent-color:var(--accent);cursor:pointer}.tempo-presets{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:13px}.tempo-presets button{background:var(--panel);border:1px solid var(--line);border-radius:7px;padding:9px 6px;font-family:'Space Grotesk';font-size:.95rem}.tempo-presets button span{font-family:'DM Sans';font-size:.75rem;color:var(--muted);margin-left:5px}.tempo-presets button[aria-pressed=true]{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}#tempoHelp{font-size:.8rem;color:var(--muted);margin:11px 0 0;line-height:1.5}.beat-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:20px 0;color:var(--muted);font-size:.8rem}.beats{display:flex;gap:6px}.beats i{width:7px;height:7px;border-radius:50%;background:var(--line)}.beats i.on{background:var(--accent)}details{border-top:1px solid var(--line);padding-top:14px;font-size:.875rem;color:var(--muted)}summary{cursor:pointer;color:var(--text)}details p{margin-bottom:0}.shapes{display:flex;gap:13px;flex-wrap:wrap;margin-top:18px;font-size:.875rem;color:var(--muted)}.shape b{color:var(--text)}.shape code{color:var(--accent);letter-spacing:.08em;margin-left:4px}.shape-key{width:100%;font-size:.75rem}
.challenge-panel{background:var(--accent);border-color:var(--accent);color:var(--accent-text);position:relative;overflow:hidden}.challenge-panel .eyebrow{color:inherit;opacity:.8}.challenge-panel h2{font-size:clamp(1.65rem,2.3vw,2.35rem);font-weight:500;margin-top:25px}.challenge-panel p{font-size:1rem;line-height:1.7}.phrase{display:flex;gap:10px;flex-wrap:wrap;margin:25px 0}.phrase button{width:44px;height:44px;padding:0;border-radius:50%;font-family:'Space Grotesk';font-size:1.2rem;border:1px solid currentColor;background:transparent;color:inherit}.phrase button:first-child{background:var(--accent-text);color:var(--accent);border-color:var(--accent-text)}.listen-note{border-top:1px solid currentColor;padding-top:20px;margin-top:25px;font-size:.9rem;line-height:1.7}
.fret-info{background:var(--raised);border-left:3px solid var(--secondary);padding:16px 18px;margin:6px 0 20px;border-radius:0 8px 8px 0;font-size:.95rem;line-height:1.65}.fret-legend{display:flex;gap:20px;flex-wrap:wrap;color:var(--muted);font-size:.8rem;margin-bottom:22px}.fret-legend span{display:flex;align-items:center;gap:7px}.fret-legend i{width:11px;height:11px;border-radius:50%;display:block;flex-shrink:0}.fret-scroll{overflow:auto;padding:5px 3px 12px}#fretboard{min-width:710px}.string-row,.fret-numbers{display:grid;grid-template-columns:35px repeat(13,1fr)}.string-label{display:grid;place-items:center;color:var(--muted);font-size:.8rem}.fret{height:41px;border-right:2px solid var(--fret);position:relative;display:grid;place-items:center}.fret:before{content:'';height:1px;background:var(--fret);position:absolute;left:0;right:0;top:50%}.string-row:nth-child(n+5) .fret:before{height:2px}.fret:nth-child(2){border-right:4px solid var(--muted)}.fret button{z-index:1;width:29px;height:29px;padding:0;border-radius:50%;border:1px solid var(--muted);background:var(--base);color:var(--base-text);font-size:.75rem}.fret button.root,.root-dot{background:var(--accent);border-color:var(--accent);color:var(--accent-text);font-weight:700}.fret button.added,.added-dot{background:var(--added);border-color:var(--added);color:var(--added-text)}.fret button.signature,.signature-dot{background:var(--signature);border-color:var(--signature);color:var(--signature-text)}.fret button.blue,.blue-dot{background:var(--blue);border-color:var(--blue);color:var(--blue-text);font-weight:700}.fret button.chord-root,.chord-root-dot{background:var(--chord);border-color:var(--chord);color:var(--chord-text)}.base-dot{background:var(--base);border:1px solid var(--muted)}.fret-numbers span{text-align:center;font-size:.75rem;color:var(--muted);padding-top:10px}.note-status{color:var(--secondary);font-size:.875rem;min-height:25px}.blue-note-control{margin:8px 0 18px;padding:13px 15px;border:1px solid var(--line);border-radius:9px}#blueNoteHelp{margin:6px 0 0 27px;font-size:.875rem;color:var(--muted)}
.chord-palette{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:9px;margin-top:20px}.palette-chord{background:var(--raised);border:1px solid var(--line);border-radius:9px;padding:18px 8px;min-width:0}.palette-chord strong{display:block;font-family:'Space Grotesk';font-size:1.35rem}.palette-chord span{display:block;color:var(--accent);margin-top:8px}.palette-chord small{display:block;font-size:.75rem;color:var(--muted);margin-top:9px}.theory-callout{border-left:3px solid var(--secondary);background:var(--raised);padding:20px;line-height:1.7;margin:20px 0}.builder-heading{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:30px}.builder-heading h3{margin-right:auto}.preset-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.preset-row button{background:transparent;border:1px solid var(--accent);border-radius:30px;padding:10px 14px;color:var(--accent);font-size:.875rem}#numeralHelp{color:var(--muted);font-size:.95rem}.more-chords{padding:17px;border:1px solid var(--line);border-radius:9px;margin:20px 0}.more-chords summary{color:var(--secondary);font-size:.95rem}.learn-panel{max-width:1000px}.song-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:30px;margin:30px 0}.song-num{display:grid;place-items:center;width:55px;height:55px;border:1px solid var(--accent);border-radius:50%;font-family:'Space Grotesk';font-size:1.8rem;color:var(--accent)}.song-grid p{color:var(--muted)}#copyStatus{display:inline-block;margin:12px;font-size:.875rem}footer{display:flex;gap:14px 24px;justify-content:space-between;align-items:center;flex-wrap:wrap;border-top:1px solid var(--line);padding:25px 0;color:var(--muted);font-size:.75rem}.footer-brand{font-family:'Space Grotesk';font-size:.95rem;color:var(--text)}footer .credit{width:100%;font-size:.75rem}footer a{color:var(--secondary);text-decoration:underline}
@media(min-width:1500px){main{padding:30px 55px 0}.panel{padding:30px}.loop-choices:not(.blues-choices){grid-template-columns:repeat(4,minmax(0,1fr))}}
@media(max-width:1180px){.app{grid-template-columns:215px minmax(0,1fr)}.sidebar{padding:30px 17px}main{padding:25px}.brand{font-size:1.15rem}.practice-grid{grid-template-columns:1fr}.challenge-panel h2{margin-top:15px}.chord-palette{grid-template-columns:repeat(4,minmax(0,1fr))}.appearance-label{display:none}}
@media(max-width:900px){.app{display:block}.sidebar{padding:20px 22px;border-right:0;border-bottom:1px solid var(--line)}.sidebar-caption,.sidebar-footer{display:none}.brand{font-size:1.35rem}.scale-nav{display:flex;gap:22px;margin-top:22px;overflow-x:auto;padding:0 0 7px}.nav-group{flex-shrink:0}.nav-group+.nav-group{margin:0}.nav-group h2{margin:0 0 8px;font-size:.75rem}.nav-group>div{display:flex;gap:7px}.scale-link{padding:9px 12px;border-color:var(--line)}.scale-link strong{font-size:.875rem}.scale-link small{display:none}.title-row{margin:32px 0 25px}.key-summary{padding-left:0;border-left:0}.appearance{margin-left:auto}header{gap:10px}.theme-button span{display:none}.theme-button{width:30px;height:30px;justify-content:center;padding:0}.theme-swatch{width:14px;height:14px}.breadcrumb{font-size:.75rem}.session-badge{width:78px;height:88px}.session-badge span{font-size:2.5rem}.session-badge small{font-size:.75rem;letter-spacing:0}}
@media(max-width:600px){main{padding:20px 16px 0}.sidebar{padding:19px 16px}.title-row{gap:15px}h1{font-size:2.15rem}.subtitle{font-size:.95rem}.session-badge{display:none}.panel{padding:20px}.panel-heading{align-items:flex-start;flex-wrap:wrap}.tabs{gap:22px}.tabs button{font-size:.875rem}.key-strip{gap:14px}.key-strip label{max-width:100%}.key-summary{width:100%}.sound-controls select{font-size:.875rem}.blues-choices{grid-template-columns:1fr}.loop-choice small{font-size:.8rem}.blues-grid .chord-card{padding:12px 7px}.blues-grid .chord-card strong{font-size:1.25rem}.blues-grid .chord-card small{font-size:.75rem}.tempo-panel{padding:15px}.tempo-presets button span{display:block;margin:2px 0 0}.chord-palette{grid-template-columns:repeat(3,minmax(0,1fr))}.song-grid{grid-template-columns:1fr;gap:15px}.song-grid>div{border-bottom:1px solid var(--line);padding-bottom:12px}.view-label select{max-width:100%}.fret-legend{gap:13px}.builder-heading h3{width:100%}.breadcrumb>span{display:none}.appearance{margin-left:0}.appearance-label{display:block;font-size:.75rem}.title-row{margin-top:28px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

.rhythm-panel{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:14px 24px;margin:24px 0;padding:20px;border:1px solid var(--line);border-radius:12px}.rhythm-choice label,.rhythm-volume label{display:block;font-size:.78rem;font-weight:600;letter-spacing:.06em;color:var(--muted);margin-bottom:8px}.rhythm-choice select{width:100%}.rhythm-panel p{grid-column:1/-1;margin:0;font-size:.85rem;color:var(--muted)}.rhythm-volume input{width:100%;accent-color:var(--accent)}.rhythm-volume input:disabled{opacity:.4}.rhythm-volume output{font-size:.85rem}.transport{flex-wrap:wrap}@media(max-width:600px){.rhythm-panel{grid-template-columns:1fr;padding:16px;gap:16px}}

.lab-panel{max-width:1100px}.lab-divider{height:1px;background:var(--line);margin:32px 0}.progression-why{max-width:78ch;color:var(--muted)}.lab-editor{padding:18px;background:var(--raised);border-radius:12px;margin:18px 0}.editor-actions{display:flex;gap:10px;flex-wrap:wrap}.palette-chord[aria-pressed=true]{outline:2px solid var(--accent);background:var(--accent-soft)}.chord-explorer{margin-top:24px;border:1px solid var(--line);padding:24px;border-radius:16px;background:var(--bg)}.learn-heading{display:flex;justify-content:space-between;gap:20px;align-items:center}.learn-heading h3{font-size:1.6rem;margin:8px 0}.learn-symbol{font-size:2rem;color:var(--accent)}.chord-view-controls{display:flex;align-items:center;flex-wrap:wrap;gap:18px;margin-top:20px}.shape-view{display:flex;padding:4px;gap:4px;border:1px solid var(--line);border-radius:9px}.shape-view button{background:transparent;border-radius:6px;padding:9px 14px}.shape-view button[aria-pressed=true]{background:var(--accent);color:var(--accent-text)}#stringGroupControl{font-size:.8rem;color:var(--muted)}#stringGroup{display:block;margin-top:5px;max-width:100%}.chord-tone-legend{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0}.tone-key{font-size:.8rem;padding:5px 10px;border-radius:20px}.tone-0{background:var(--accent);color:var(--accent-text)}.tone-1{background:var(--signature);color:var(--signature-text)}.tone-2{background:var(--base);color:var(--base-text)}.tone-3{background:var(--blue);color:var(--blue-text)}.chord-neck-scroll{overflow-x:auto;padding:6px 2px}.chord-neck{min-width:calc(44px + var(--neck-columns,13)*48px);width:100%;margin:auto}.chord-string{display:grid;grid-template-columns:22px 22px repeat(var(--neck-columns),minmax(44px,1fr));align-items:center;height:43px}.chord-string-label{font-weight:700;font-size:.85rem}.string-status{color:var(--muted);text-align:center}.chord-fret{height:43px;border-right:2px solid var(--fret);position:relative;display:grid;place-items:center}.chord-fret:before{content:'';height:1px;background:var(--fret);position:absolute;left:0;right:0;top:50%}.chord-fret.open-fret{border-right:4px solid var(--text)}.chord-dot{position:relative;border:1px solid transparent;border-radius:50%;width:34px;height:34px;font-weight:700;font-size:.8rem;padding:0}.fret-labels{height:28px;text-align:center;color:var(--muted);font-size:.75rem}.shape-tab{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:.78rem;color:var(--muted)}.shape-tab code{font-size:.95rem;letter-spacing:.06em;color:var(--text);white-space:pre}.shape-navigation{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:20px}#shapePosition{flex:1;min-width:140px;font-size:.85rem;color:var(--muted)}.lab-building-tip{margin-top:24px}.lab-panel #builder .chord-card[aria-pressed=true]{box-shadow:inset 0 0 0 2px var(--secondary)}@media(max-width:600px){.chord-explorer{padding:16px}.learn-heading h3{font-size:1.25rem}.learn-symbol{font-size:1.5rem}.chord-view-controls{gap:12px}.shape-view button{padding:8px 10px;font-size:.85rem}.shape-navigation #hearShape{width:100%}.builder-heading{flex-wrap:wrap}.chord-tone-legend{gap:6px}.tone-key{padding:4px 8px;font-size:.72rem}}

/* Keep shape choice next to the string group, before the fretboard. */
.neck-controls{display:flex;align-items:end;gap:16px;flex-wrap:wrap;margin-top:14px;padding:15px 16px;border:1px solid var(--line);border-radius:12px;background:var(--raised)}
.neck-controls label,.position-heading{font-size:.875rem;font-weight:600;color:var(--text)}
.neck-controls #stringGroupControl{flex:1 1 220px;font-size:.875rem}
.neck-controls #stringGroup{width:100%;margin-top:8px}
.position-control{flex:1 1 275px;min-width:0}
.position-heading{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:8px}
#shapePosition{font-size:.8125rem;font-weight:400;color:var(--muted);text-align:right}
.position-buttons{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.position-buttons button{min-height:42px;padding:9px 12px;white-space:nowrap}
.neck-hint{margin:18px 0 6px}
.shape-actions{display:flex;margin-top:18px}
.shape-actions #hearShape{min-height:44px}
@media(max-width:600px){.neck-controls{padding:13px;gap:14px}.position-control{flex-basis:100%}.position-heading{align-items:flex-start}.position-buttons button{font-size:.875rem}.shape-actions #hearShape{width:100%}}

.learn-heading{align-items:end;flex-wrap:wrap}
.learn-chord-chooser{display:block;min-width:min(100%,255px);font-size:.875rem;font-weight:600;color:var(--muted)}
.learn-chord-chooser select{display:block;width:100%;margin-top:8px;font-size:.95rem;color:var(--text)}
@media(max-width:600px){.learn-heading{display:block}.learn-chord-chooser{width:100%;margin-top:18px}}

/* Practice console: transport, progression, sounds, then the lead map. */
#practice .loop-panel{padding:24px 26px}
#practice .panel-heading h2{margin:6px 0 0;font-size:1.75rem}
.console-toolbar{display:grid;grid-template-columns:minmax(260px,1fr) minmax(300px,1fr);gap:28px;align-items:center;margin:22px 0 24px;padding:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
#practice .transport{margin:0;gap:10px}
#practice .transport .primary{min-height:48px;padding:13px 22px}
#practice .beat-row{margin:14px 0 0;min-height:22px;font-size:.8125rem}
#practice .beats i{width:8px;height:8px}
#practice .tempo-panel{margin:0;padding:0;border:0;border-radius:0;background:transparent}
#practice .tempo-head{margin-bottom:5px}
#practice .tempo-head label{font-size:.875rem;color:var(--muted)}
#practice .tempo-head output{font-size:1.35rem}
#practice .tempo-presets{display:flex;gap:6px;margin-top:7px}
#practice .tempo-presets button{flex:1;padding:5px 8px;font-size:.8125rem;background:transparent}
#practice .tempo-presets button span{font-size:.75rem}
#practice #tempoHelp{margin-top:7px;font-size:.75rem}
#practice .loop-choices{grid-template-columns:repeat(4,minmax(0,1fr));margin-bottom:16px}
#practice .loop-choices.blues-choices{grid-template-columns:repeat(3,minmax(0,1fr))}
#practice .loop-choice{padding:10px 12px}
#practice .progression{gap:8px}
#practice .chord-card{padding:12px 14px;min-height:74px}
#practice .chord-card strong{font-family:'Space Grotesk';font-size:1.6rem;font-weight:600}
#practice .chord-card small{margin-top:5px;font-size:.8125rem}
#practice #loopInstruction{margin:14px 0 20px;font-size:.875rem;line-height:1.5}
.backing-mixer{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;padding:20px 0;border-top:1px solid var(--line)}
.instrument-channel{padding-right:22px;min-width:0}
.instrument-channel>label{display:block;font-size:.8125rem;color:var(--muted);font-weight:600;margin-bottom:9px}
.instrument-channel>select{width:100%}
.instrument-channel>p{font-size:.8125rem;line-height:1.5;color:var(--muted);margin:20px 0 0}
#practice #bluesChordControl{margin-top:17px;gap:8px}
#practice #bluesChordNames{font-size:.8125rem}
#practice .rhythm-panel{display:grid;grid-template-columns:1fr;gap:12px;margin:0;padding:0 22px;border:0;border-left:1px solid var(--line);border-radius:0}
#practice .bass-panel{padding-right:0}
#practice .rhythm-choice label,#practice .rhythm-volume label{font-size:.8125rem;text-transform:none;letter-spacing:0;margin:0 0 9px}
#practice .rhythm-volume .tempo-head{margin:0 0 3px}
#practice .rhythm-volume .tempo-head label{margin:0;font-family:'DM Sans';font-size:.75rem}
#practice .rhythm-volume output{font-size:.8125rem}
#practice .rhythm-panel p{font-size:.8125rem;line-height:1.5;margin:0}
#practice .backing-mixer select{font-size:.875rem;min-height:44px}
#practice .pedal-guide{margin-top:4px;font-size:.8125rem}
#practice .pedal-guide summary{color:var(--muted)}
#practice .fret-panel{padding:24px 26px}
#practice .view-label{font-size:.75rem}
.lead-coach{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px 28px;align-items:center;margin:22px 0;padding:18px 20px;border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:10px;background:var(--accent-soft)}
.lead-copy h3{font-family:'Space Grotesk';font-size:1.2rem;font-weight:600;margin:6px 0}
.lead-copy p{font-size:.9375rem;line-height:1.6;margin:0;color:var(--muted);max-width:75ch}
.lead-note-set{max-width:280px}
.lead-note-set .control-label{display:block;font-size:.75rem;color:var(--muted)}
.lead-note-set .phrase{margin:10px 0 0;gap:8px}
.lead-note-set .phrase button{width:39px;height:39px;font-size:1rem;border-color:var(--line);color:var(--text);background:var(--panel)}
.lead-note-set .phrase button:first-child{color:var(--accent-text);background:var(--accent);border-color:var(--accent)}
.lead-explanation{grid-column:1/-1;padding-top:10px;font-size:.8125rem}
.lead-explanation summary{color:var(--muted)}
.lead-explanation #why{margin-top:12px;line-height:1.6;max-width:90ch}
#practice .fret-info{padding:12px 16px;font-size:.875rem;margin-bottom:16px}
#practice .fret-legend{margin-bottom:14px}
@media(min-width:1250px){#practice .progression.blues-grid{grid-template-columns:repeat(12,minmax(0,1fr))}#practice .blues-grid .chord-card{padding:12px 9px}#practice .blues-grid .chord-card small span{display:block;margin-top:3px}}
@media(max-width:1180px){.console-toolbar{gap:22px}.lead-coach{grid-template-columns:1fr}.lead-note-set{max-width:none}.lead-note-set .phrase{margin-top:8px}}
@media(max-width:700px){.console-toolbar{grid-template-columns:1fr;gap:20px}.backing-mixer{grid-template-columns:1fr;gap:20px}.instrument-channel{padding:0}#practice .rhythm-panel{padding:20px 0 0;border-left:0;border-top:1px solid var(--line);grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start}#practice .rhythm-panel p{grid-column:1/-1}#practice .loop-choices{grid-template-columns:repeat(2,minmax(0,1fr))}#practice .loop-choices.blues-choices{grid-template-columns:repeat(3,minmax(0,1fr))}#practice .loop-choice small{display:none}#practice .loop-choice strong{font-size:.875rem}#practice .loop-panel,#practice .fret-panel{padding:20px}#practice .chord-card{padding:10px;min-height:66px}#practice .chord-card strong{font-size:1.35rem}#practice .blues-grid .chord-card small{font-size:.75rem}#practice .blues-grid .chord-card small span{display:block}.lead-coach{padding:16px;gap:14px}.lead-copy h3{font-size:1.1rem}#practice .tempo-presets button span{display:inline;margin-left:4px}}
@media(max-width:400px){#practice .rhythm-panel{grid-template-columns:1fr}#practice .rhythm-panel p{grid-column:auto}#practice .transport .primary{padding:12px 15px}#practice .loop-choices.blues-choices{grid-template-columns:1fr 1fr 1fr}#practice .loop-choice{padding:10px 7px}}

/* A quiet arrangement strip: one choice, then the music. */
#practice .loop-choices,#practice .loop-choices.blues-choices{display:flex;align-items:center;flex-wrap:wrap;gap:12px 18px;margin:0 0 20px}
#practice .loop-choices>label{font-size:.8125rem;font-weight:600;color:var(--muted)}
#practice .loop-choices select{min-width:260px;max-width:100%;font-size:.875rem;background:var(--bg)}
.loop-repeat{margin-left:auto;font-size:.75rem;color:var(--muted)}
#practice .progression{display:flex;gap:0;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--bg)}
#practice .progression .chord-card{flex:1;min-width:0;background:transparent;border:0;border-right:1px solid var(--line);border-radius:0;box-shadow:none;padding:16px 20px;text-align:left;min-height:82px}
#practice .progression .chord-card:last-child{border-right:0}
#practice .progression .chord-card.home{color:var(--text)}
#practice .progression .chord-card.selected{outline:none;background:var(--accent-soft);box-shadow:inset 0 -3px var(--accent)}
#practice .progression .chord-card.playing{background:var(--accent-soft);box-shadow:inset 0 -3px var(--secondary)}
#practice .progression .chord-card:hover{background:var(--raised)}
#practice .progression.blues-grid{display:block}
.bar-phrase{display:grid;grid-template-columns:100px minmax(0,1fr);align-items:center;border-bottom:1px solid var(--line)}
.bar-phrase:last-child{border-bottom:0}
.phrase-range{font-size:.75rem;color:var(--muted);padding-left:18px}
.phrase-bars{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-left:1px solid var(--line)}
#practice .blues-grid .chord-card{min-height:68px;padding:10px 20px}
#practice .blues-grid .chord-card strong{font-size:1.35rem}
#practice .blues-grid .chord-card small span{display:inline;margin:0}
.chord-volume{margin-top:12px}
#practice .tempo-presets button{border:0;padding:4px;background:transparent;color:var(--muted)}
#practice .tempo-presets button[aria-pressed=true]{color:var(--accent);background:transparent;box-shadow:none}
@media(max-width:700px){#practice .loop-choices select{width:100%;min-width:0}.loop-repeat{margin-left:0}#practice .progression .chord-card{padding:12px 8px}#practice .progression .chord-card small span{display:block}.bar-phrase{grid-template-columns:1fr}.phrase-range{padding:8px 12px;border-bottom:1px solid var(--line);font-size:.6875rem}.phrase-bars{border-left:0}#practice .blues-grid .chord-card{padding:10px 8px}#practice .blues-grid .chord-card small span{display:block}}

#practice .progression .chord-card:focus-visible{outline:2px solid var(--accent);outline-offset:-3px}

/* Keep key and backing setup together, with comfortable guitar-side targets. */
.loop-panel .key-strip{display:grid;grid-template-columns:140px minmax(240px,320px) minmax(0,1fr);gap:20px;margin:24px 0 0;align-items:center}
.loop-panel .key-strip label{font-size:.8125rem;letter-spacing:.06em}
.loop-panel .key-strip select{font-size:1.05rem;min-height:52px;width:100%;background:var(--bg)}
.loop-panel .key-summary{padding-left:24px}
.loop-panel #scaleNotes{font-size:1.15rem;gap:17px}
.arrangement-controls{display:flex;align-items:center;gap:16px 24px;flex-wrap:wrap;margin-bottom:20px}
#practice .arrangement-controls .loop-choices{margin:0;flex:1;min-width:0}
#practice .loop-repeat{width:100%;margin:0}
#practice #bluesChordControl{width:auto;margin:0;padding:10px 14px;border:1px solid var(--line);border-radius:8px;background:var(--bg)}
#practice #bluesChordControl label{min-height:28px;cursor:pointer}
#practice .phrase-range{line-height:1.4;padding:12px;overflow-wrap:break-word}
#practice .bar-phrase{grid-template-columns:120px minmax(0,1fr)}
@media(max-width:1100px){.loop-panel .key-strip{grid-template-columns:140px minmax(0,1fr)}.loop-panel .key-summary{grid-column:1/-1;border-left:0;padding:0}}
@media(max-width:700px){.loop-panel .key-strip{grid-template-columns:90px minmax(0,1fr);gap:16px 12px}.loop-panel .key-strip select{font-size:.9375rem;padding-left:10px}.loop-panel #scaleNotes{gap:15px}.arrangement-controls{align-items:stretch;gap:14px}#practice .arrangement-controls .loop-choices{flex-basis:100%}#practice #bluesChordControl{width:100%;padding:10px 12px}#practice .bar-phrase{grid-template-columns:1fr}#practice .phrase-range{padding:8px 12px}}

#practice .arrangement-toggle{margin-left:auto;min-height:46px;padding:8px 12px;border:1px solid var(--line);border-radius:8px;cursor:pointer;background:var(--bg);font-size:.875rem}
#practice .arrangement-toggle:has(input:checked){border-color:var(--accent);background:var(--accent-soft)}
#practice .phrase-bars{grid-template-columns:repeat(var(--section-bars,4),minmax(0,1fr));overflow-x:auto}
#practice .song-bars{grid-template-columns:repeat(var(--section-bars),minmax(76px,1fr))}
@media(max-width:700px){#practice .arrangement-toggle{margin-left:0;width:100%}#practice .song-bars{grid-template-columns:repeat(var(--section-bars),minmax(70px,1fr))}}

/* Selected bar is a quiet reference for the note map; the sounding bar carries the active cue. */
#practice .progression .chord-card.home strong{color:var(--text)}
#practice .progression .chord-card.selected{background:color-mix(in srgb,var(--accent) 5%,transparent);box-shadow:inset 0 -1px var(--line)}
#practice .progression.is-playing .chord-card.selected:not(.playing){background:transparent;box-shadow:none}
#practice .progression .chord-card.playing{background:color-mix(in srgb,var(--accent) 10%,transparent);box-shadow:inset 0 -2px var(--secondary)}

/* Surf ’64: lacquer, aged ivory and woven amplifier cloth. */
:root[data-theme=surf]{color-scheme:light;--bg:#f1e8d6;--sidebar:#193f3b;--panel:#fff8ea;--raised:#e9dec8;--text:#233e38;--muted:#606653;--line:#b8b39b;--accent:#215e52;--accent-text:#fff7e5;--accent-soft:#d7e5d6;--secondary:#a24c35;--focus:#a24c35;--shadow:0 9px 25px #4036270c;--base:#d9d0ba;--base-text:#344337;--added:#38877c;--added-text:#fffaf0;--signature:#ad592d;--signature-text:#fff9e9;--blue:#6861a1;--blue-text:#fff9ee;--chord:#8c4f72;--chord-text:#fff9ee;--fret:#8d917b}
:root[data-theme=surf] body{background:radial-gradient(ellipse at 75% 0,#fffaf0a6,transparent 70%),repeating-linear-gradient(0deg,#79664203 0 1px,transparent 1px 4px),var(--bg)}
:root[data-theme=surf] .sidebar{color:#f7efdb;--text:#f7efdb;--muted:#c1cdb8;--line:#56716a;--accent:#f2d7a0;--accent-soft:#335c4c;background:linear-gradient(90deg,#16373250,#0d272455),repeating-linear-gradient(0deg,#b6ccaa16 0 1px,transparent 1px 4px),repeating-linear-gradient(90deg,#061b142b 0 1px,transparent 1px 4px),#244e44;border-right:4px solid #cfb98e;box-shadow:inset -1px 0 #fff3cc}
:root[data-theme=surf] h1{font-family:'Fraunces',Georgia,serif;font-style:italic;font-weight:600;letter-spacing:-.055em;font-size:clamp(2.5rem,4.8vw,4.7rem);line-height:1.03;color:#224e42}
:root[data-theme=surf] h2,:root[data-theme=surf] .lead-copy h3{font-family:'Fraunces',Georgia,serif;font-weight:600;letter-spacing:-.035em}
:root[data-theme=surf] .brand{font-family:'Fraunces',Georgia,serif;font-style:italic;font-size:1.5rem;letter-spacing:-.05em}
:root[data-theme=surf] .brand-mark{color:#c6dca9}
:root[data-theme=surf] .scale-link{border-radius:5px}
:root[data-theme=surf] .panel{border-radius:13px;border:1px solid #b6ad92;box-shadow:0 8px 20px #3d322514,inset 0 0 0 4px #fffdf5,inset 0 0 0 5px #e4dbc5}
:root[data-theme=surf] .panel-heading .eyebrow{color:#8a4b2d}
:root[data-theme=surf] .session-badge{background:#cfe1cc;border:1px solid #477761;border-radius:12px;box-shadow:inset 0 0 0 4px #e7edd6,0 3px 0 #82997b;color:#285944}
:root[data-theme=surf] .session-badge span{font-family:'Fraunces',Georgia,serif;font-weight:600}
:root[data-theme=surf] .primary{background:linear-gradient(#33796a,#245b4d);color:#fff5df;box-shadow:inset 0 1px #7caa8e,0 3px 0 #133f34;border:1px solid #184a3c;border-radius:6px}
:root[data-theme=surf] .lead-coach{background:#eef0df;border-left-color:#327969;box-shadow:inset 0 0 0 3px #fff9eb}
:root[data-theme=surf] .loop-panel .key-strip select,:root[data-theme=surf] #progressionChoice{background:#fff9ec;border-color:#a9ac91}
:root[data-theme=surf] #themeChoices{background:#fff9ec}
:root[data-theme=surf] .progression{background:#f8f3e6}
:root[data-theme=surf] .session-badge small{font-weight:700;font-size:.625rem;letter-spacing:.13em}

/* Walnut ’73: a hardwood cabinet around a parchment control face. */
:root[data-theme=walnut]{color-scheme:dark;--bg:#29221c;--sidebar:#332218;--panel:#e9d9b9;--raised:#483b2b;--text:#f6e9cc;--muted:#c7b593;--line:#746043;--accent:#e6b75f;--accent-text:#332514;--accent-soft:#483b28;--secondary:#9eb59a;--focus:#e8bd70;--shadow:0 12px 28px #110b0959;--base:#574832;--base-text:#fff5d9;--added:#93b7a1;--added-text:#243628;--signature:#ffb674;--signature-text:#432510;--blue:#c6b9e2;--blue-text:#302342;--chord:#e1aac2;--chord-text:#422535;--fret:#9c8460}
:root[data-theme=walnut] body{background:radial-gradient(ellipse at top right,#56442c55,transparent 65%),repeating-linear-gradient(0deg,#bfa07704 0 1px,transparent 1px 5px),var(--bg)}
:root[data-theme=walnut] .sidebar{background:linear-gradient(90deg,#130a0450,transparent 22%,#6f432023 55%,#130a0477),repeating-linear-gradient(91deg,#b9844923 0 1px,#28180d33 1px 3px,transparent 3px 11px),#3b281a;border-right:4px solid #9a7143;box-shadow:inset -1px 0 #d2ab71}
:root[data-theme=walnut] h1{font-family:'Fraunces',Georgia,serif;font-weight:700;letter-spacing:-.05em;line-height:1.03;font-size:clamp(2.5rem,4.8vw,4.7rem);color:#f3dfb8;text-shadow:0 2px #120e09}
:root[data-theme=walnut] .title-row{position:relative;padding-top:22px}
:root[data-theme=walnut] .title-row:before{content:'';position:absolute;top:0;left:0;width:112px;height:6px;background:linear-gradient(90deg,#a65a33 0 33%,#d19543 33% 66%,#e8c575 66%);border-radius:2px}
:root[data-theme=walnut] .brand{font-family:'Fraunces',Georgia,serif;font-weight:700;font-size:1.5rem;letter-spacing:-.05em}
:root[data-theme=walnut] .panel{color:var(--text);color-scheme:light;--bg:#f0e3c8;--panel:#e9d9b9;--raised:#dfccaa;--text:#342a1d;--muted:#665840;--line:#b5a080;--accent:#854224;--accent-text:#fff0d6;--accent-soft:#e2c9a4;--secondary:#427366;--focus:#804021;--base:#dbc6a5;--base-text:#3c3224;--added:#3e796b;--added-text:#fff5de;--signature:#876400;--signature-text:#fff5df;--blue:#70658e;--blue-text:#fff4da;--chord:#8c5265;--chord-text:#fff3dc;--fret:#9c8765;background:linear-gradient(110deg,#fff4dc55,transparent 60%),repeating-linear-gradient(0deg,#61431e03 0 1px,transparent 1px 3px),#e9d9b9;border:1px solid #9a744b;border-radius:9px;box-shadow:0 10px 26px #110b0955,inset 0 0 0 4px #d4b58a,inset 0 0 0 5px #a9875b}
:root[data-theme=walnut] h2,:root[data-theme=walnut] .lead-copy h3{font-family:'Fraunces',Georgia,serif;font-weight:600;letter-spacing:-.035em}
:root[data-theme=walnut] .panel .eyebrow{color:#815235}
:root[data-theme=walnut] .panel .primary{background:linear-gradient(#965737,#71391f);color:#fff3d8;border:1px solid #5b2a17;border-radius:5px;box-shadow:inset 0 1px #b47c53,0 3px 0 #512611}
:root[data-theme=walnut] .session-badge{background:#30291e;border:1px solid #b79a5e;border-radius:9px;box-shadow:inset 0 0 0 4px #4d402c;color:#f2d59d}
:root[data-theme=walnut] .session-badge span{font-family:'Fraunces',Georgia,serif;font-weight:700}
:root[data-theme=walnut] .session-badge small{font-weight:700;font-size:.625rem;letter-spacing:.13em}
:root[data-theme=walnut] .scale-link{border-radius:5px}
:root[data-theme=walnut] .lead-coach{background:#f1e5ca;border-left-color:#90552e;box-shadow:inset 0 0 0 3px #e5d3b0}
:root[data-theme=walnut] .phrase button{box-shadow:inset 0 1px #fff9e4}
:root[data-theme=walnut] #themeChoices{background:#211c17}
:root[data-theme=walnut] .theme-button[aria-pressed=true]{background:#4e3a24;border-color:#d0ae73}

/* Shared small details evoke physical gear without adding controls. */
:root:is([data-theme=surf],[data-theme=walnut]) .console-toolbar{border-top-style:double;border-top-width:3px}
:root:is([data-theme=surf],[data-theme=walnut]) .panel select{border-radius:5px}
:root:is([data-theme=surf],[data-theme=walnut]) .loop-panel .key-summary{border-left-style:double;border-left-width:3px}
:root:is([data-theme=surf],[data-theme=walnut]) .session-badge{position:relative}
:root:is([data-theme=surf],[data-theme=walnut]) .session-badge:after{content:'';position:absolute;top:8px;right:8px;width:4px;height:4px;border-radius:50%;background:currentColor;opacity:.55;box-shadow:-73px 0 currentColor,0 85px currentColor,-73px 85px currentColor}
.theme-swatch.surf{background:linear-gradient(135deg,#ccddc2 50%,#235848 50%);border-color:#7e9275}
.theme-swatch.walnut{background:linear-gradient(135deg,#ddb56f 50%,#664126 50%);border-color:#bb9761}
#themeChoices{flex-wrap:wrap}
@media(max-width:1100px){:root:is([data-theme=surf],[data-theme=walnut]) .loop-panel .key-summary{border-left:0}}
@media(max-width:900px){:root:is([data-theme=surf],[data-theme=walnut]) .sidebar{border-right:0;border-bottom:3px solid #a38a60}:root:is([data-theme=surf],[data-theme=walnut]) .session-badge:after{display:none}}
@media(max-width:600px){:root:is([data-theme=surf],[data-theme=walnut]) h1{font-size:2.5rem}}

/* Saved loops stay separate from the active progression controls. */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.saved-loops{border-top:1px solid var(--line);margin-top:2px;padding-top:12px}
.saved-loops summary{display:flex;align-items:center;gap:9px;cursor:pointer;list-style:none;padding:4px 2px 4px 0}
.saved-loops summary::-webkit-details-marker{display:none}
.saved-loops summary:before{content:'›';font-size:1.3rem;line-height:1;color:var(--muted);transition:transform .15s}
.saved-loops[open] summary:before{transform:rotate(90deg)}
.saved-loops summary strong{font-size:.9rem}
.saved-loops summary span{margin-left:auto;font-size:.75rem;color:var(--muted)}
.saved-loops-body{max-width:760px;padding:4px 0 4px 20px}
.saved-loops-row{display:flex;align-items:center;gap:8px;margin-top:8px}
.saved-loops-row input,.saved-loops-row select{min-width:0;flex:1;background:var(--bg);color:var(--text);border:1px solid var(--line);border-radius:8px;padding:9px 10px}
.saved-loops-row button{flex:none;min-height:42px}
#savedLoopStatus{min-height:1.4em;margin:8px 0 0;color:var(--muted);font-size:.8rem}
#savedLoopStatus:empty{display:none}
@media(max-width:600px){.saved-loops-row{flex-wrap:wrap}.saved-loops-row input,.saved-loops-row select{flex-basis:100%}.saved-loops-row button{flex:1}}

.local-file-notice{display:none}
html[data-local-file] .app{display:none}
html[data-local-file] .local-file-notice{display:block;max-width:680px;margin:10vh auto;padding:30px;background:var(--panel);border:1px solid var(--line);border-radius:16px}
.local-file-notice h1{font-size:2rem;margin:0 0 15px}
.local-file-notice a{color:var(--accent);text-decoration:underline}
.local-file-notice code{background:var(--raised);padding:2px 5px;border-radius:4px}
@media(max-width:700px){html[data-local-file] .local-file-notice{margin:6vh 16px;padding:22px}}

.appearance-menu{display:block;position:relative;margin-left:auto;font-size:.8rem;color:var(--muted)}.appearance-menu summary{cursor:pointer;padding:8px 12px;border:1px solid var(--line);border-radius:8px}.appearance-menu #themeChoices{position:absolute;z-index:20;right:0;top:100%;margin-top:8px;box-shadow:var(--shadow);flex-wrap:wrap;width:max-content;max-width:min(550px,85vw)}
.title-row{margin:24px 0}.title-row h1{font-size:clamp(1.8rem,3vw,2.7rem);margin:7px 0}.title-row .subtitle{margin:8px 0;font-size:.95rem;max-width:68ch}.session-badge{width:76px;height:85px}.session-badge span{font-size:2.5rem}.session-badge small{font-size:.65rem}
:root .title-row h1{font-size:clamp(1.8rem,3vw,2.7rem)}.title-row .session-badge:after{display:none}
:root[data-theme=walnut] #keyHost select{color:#342a1d;color-scheme:light}
.replace-bar{display:block;margin:12px 0;font-size:.875rem}.replace-bar select{display:block;margin-top:6px}
.circle-practice{min-width:0}.circle-practice>h2{margin:8px 0}.circle-practice>p{max-width:76ch}
.circle-settings{display:grid;grid-template-columns:1.3fr 1.2fr 1fr;gap:18px;margin:25px 0}.circle-settings label{display:grid;gap:8px;color:var(--muted);font-size:.85rem}.circle-settings select{width:100%;min-width:0;color:var(--text);background:var(--bg)}
.circle-stage{display:grid;grid-template-columns:minmax(230px,360px) minmax(0,1fr);align-items:center;gap:clamp(24px,5vw,70px);padding:20px 0 30px;border-bottom:1px solid var(--line)}
.note-circle{position:relative;width:100%;aspect-ratio:1;max-width:360px;margin:auto}.note-circle:before{content:'';position:absolute;inset:8%;border:1px solid var(--line);border-radius:50%}.circle-note{position:absolute;transform:translate(-50%,-50%);display:grid;place-items:center;width:40px;height:40px;border:1px solid var(--line);border-radius:50%;background:var(--panel);font-size:.9rem}.circle-note.current{background:var(--accent);border-color:var(--accent);color:var(--accent-text);font-weight:700;box-shadow:0 0 0 5px var(--accent-soft)}.circle-center{position:absolute;inset:28%;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:6px}.circle-center strong{font-size:clamp(2.5rem,5vw,4.5rem);line-height:1.1;color:var(--accent)}.circle-center>span:last-child{color:var(--muted);font-size:.85rem;white-space:nowrap}.circle-player h3{font-size:1.25rem;margin:0}.circle-player>p{margin:8px 0 18px}.circle-transport{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0 25px}.circle-pace{display:flex;justify-content:space-between;gap:10px;font-size:.9rem}.circle-pace output{color:var(--accent);font-weight:700}#circlePace{width:100%;accent-color:var(--accent);margin-top:15px}.circle-player .check-row{font-size:.85rem;margin:12px 0}#circleStatus{min-height:1.5em;color:var(--secondary);font-size:.9rem}
.circle-neck-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin:25px 0 12px}.circle-neck-heading h3{margin:0;font-size:1rem}.circle-neck-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:var(--bg);padding:12px 8px}#circleNeck{min-width:700px}.circle-neck-row{display:grid;grid-template-columns:48px repeat(13,minmax(0,1fr));align-items:center;text-align:center;min-height:40px}.circle-fret{height:40px;position:relative;border-right:1px solid var(--fret);display:grid;place-items:center}.circle-fret:before{content:'';position:absolute;left:0;right:0;height:var(--wire);background:var(--fret);opacity:.65}.circle-fret.open-fret{border-right:4px solid var(--fret)}.circle-fret strong{z-index:1;background:var(--accent);color:var(--accent-text);border-radius:50%;width:32px;height:32px;display:grid;place-items:center;font-size:.8rem}.selected-string{background:var(--accent-soft)}.selected-string .circle-string-label{color:var(--accent);font-weight:700}.fret-numbers{font-size:.7rem;color:var(--muted)}.fret-numbers small{display:block;line-height:12px}.circle-tip{border-top:1px solid var(--line);margin-top:22px;padding-top:18px}.circle-tip summary{cursor:pointer;color:var(--secondary);font-size:.9rem}.circle-tip p{max-width:80ch;color:var(--muted);font-size:.9rem}
@media(max-width:700px){.circle-settings{grid-template-columns:1fr 1fr;gap:12px}.circle-settings label:first-child{grid-column:1/-1}.circle-stage{grid-template-columns:1fr;gap:20px}.note-circle{max-width:270px}.circle-player{width:100%}.circle-neck-heading{gap:8px}.circle-practice{padding:18px}.circle-note{width:34px;height:34px}.circle-transport button{flex:1}}

/* Lead-view candidates: same guitar, different musical tasks. */
.lead-view-tools{display:flex;align-items:end;gap:14px;flex-wrap:wrap;margin:20px 0}.lead-view-tools label{display:grid;gap:6px;font-size:.8rem;color:var(--muted)}.lead-view-tools select{min-width:145px;padding:9px 12px}.lead-view-tools>button{margin-left:auto}.lead-view-prompt{border-left:3px solid var(--accent);padding:12px 18px;background:var(--accent-soft);border-radius:0 10px 10px 0;margin:18px 0}.lead-view-prompt h3{font-size:1.1rem;margin:6px 0}.lead-view-prompt p{font-size:.9rem;max-width:80ch;margin:7px 0;color:var(--text)}
#fretboard .lead-inactive-string{opacity:.45}#fretboard .lead-window-cell{background:var(--accent-soft)}#fretboard .lead-landing{outline:2px solid var(--secondary);outline-offset:3px;font-weight:700}#fretboard .lead-context{background:var(--bg);color:var(--muted);border:1px solid var(--line)}#fretboard .lead-both{height:36px;min-width:36px;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:.75rem;line-height:1.1}#fretboard .lead-both small{font-size:.6rem;font-weight:400;margin-top:2px}.landing-dot{background:var(--base);outline:2px solid var(--secondary);outline-offset:2px}.context-dot{background:var(--bg);border:1px solid var(--line)}
@media(max-width:600px){.lead-view-tools{gap:10px}.lead-view-tools>button{margin-left:0}.lead-view-tools label{flex:1}.lead-view-tools select{width:100%;min-width:125px}.fret-panel .panel-heading{align-items:flex-start;flex-wrap:wrap;gap:12px}.fret-panel .view-label{max-width:100%}.fret-panel .view-label select{max-width:100%}}

/* Focus one of the five physical pentatonic forms without shrinking the strings. */
.pent-position-control{display:flex;align-items:center;gap:7px;flex-wrap:wrap;border-left:1px solid var(--line);padding-left:14px}.pent-position-control output{min-width:195px;text-align:center;font-size:.84rem;color:var(--text);font-weight:600;white-space:nowrap}.pent-position-control button{min-height:40px;padding:7px 12px}#fretboard.pent-position-full{min-width:930px}.pent-position-full .string-row,.pent-position-full .fret-numbers{grid-template-columns:35px repeat(16,minmax(0,1fr))}.pent-position-full .fret.pent-active-fret{background:var(--accent-soft)}
@media(max-width:700px){.pent-position-control{width:100%;border-left:0;border-top:1px solid var(--line);padding:12px 0 0}.pent-position-control output{flex:1;min-width:170px}.pent-position-control button{flex:none!important}}

/* Free/member interface review. Purchase state will come from the server. */
.header-tools,.member-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.header-tools{margin-left:auto}.header-tools .appearance-menu{margin-left:0}.member-actions button{font-size:.8rem;padding:8px 12px;min-height:40px}.access-badge{font-size:.75rem;color:var(--accent);white-space:nowrap}.membership-review{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:20px 0 0;padding:10px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.review-label{font-size:.65rem;letter-spacing:.12em;color:var(--muted)}.review-note{font-size:.75rem;color:var(--muted);margin-left:auto}.preview-switch{display:flex;background:var(--sidebar);border:1px solid var(--line);border-radius:8px;padding:3px;gap:3px}.preview-switch button{background:transparent;color:var(--muted);padding:6px 12px;border-radius:5px;font-size:.75rem;min-height:32px}.preview-switch button[aria-pressed=true]{background:var(--raised);color:var(--text);box-shadow:inset 0 0 0 1px var(--line)}.free-sample-note{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:12px 0;font-size:.8rem;color:var(--muted)}.free-sample-note strong{color:var(--text)}.text-action{padding:8px 0;background:transparent;color:var(--accent);font-size:.85rem;text-align:left;text-decoration:underline;text-underline-offset:4px}.membership-tag{display:inline-flex;border:1px solid var(--line);border-radius:4px;padding:1px 5px;color:var(--muted);font-size:.6rem;letter-spacing:.02em;white-space:nowrap;font-weight:500}.scale-link .membership-tag{margin-top:6px}.tabs .membership-tag{margin-left:4px;vertical-align:middle}.member-locked{color:var(--muted)}.membership-dialog{color:var(--text);background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:28px;max-width:780px;width:calc(100% - 32px);max-height:calc(100dvh - 40px);overflow:auto;box-shadow:0 24px 90px #0007}.membership-dialog::backdrop{background:#080d14b3;backdrop-filter:blur(4px)}.membership-dialog-top{display:flex;align-items:center;justify-content:space-between;gap:16px}.dialog-close{display:grid;place-items:center;min-width:40px;min-height:40px;background:var(--raised);border:1px solid var(--line);border-radius:50%;font-size:1.5rem;line-height:1}.membership-dialog h2{font-size:clamp(1.6rem,4vw,2.15rem);line-height:1.15;max-width:20ch;margin:18px 0 12px}.access-comparison{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:24px 0}.access-plan{padding:22px;border:1px solid var(--line);border-radius:12px;background:var(--bg)}.full-plan{background:var(--accent-soft);border-color:var(--accent)}.access-plan h3{font-size:1.2rem;line-height:1.3;margin:12px 0}.access-plan ul{padding-left:18px;font-size:.85rem;margin:18px 0 0;line-height:1.65}.access-plan li+li{margin-top:7px}.plan-price{font-size:1.05rem;font-weight:700;color:var(--accent)}.plan-price span{display:block;font-size:.75rem;color:var(--muted);font-weight:400}.purchase-availability{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.purchase-availability p{margin:0;font-size:.85rem}.purchase-availability .primary{font-size:.85rem}.membership-dialog button:disabled{opacity:.65}.membership-dialog-footer{display:flex;justify-content:flex-end;border-top:1px solid var(--line);padding-top:18px;margin-top:22px}.account-summary{border:1px solid var(--line);border-radius:12px;padding:20px;background:var(--bg);margin:24px 0}.account-summary h3{margin:10px 0}.account-summary p{font-size:.9rem}.membership-dialog #accountFullAccess{display:block;margin-top:12px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:700px){.header-tools{width:100%;margin-left:0;justify-content:space-between}.member-actions{gap:8px;flex:1}.access-badge{font-size:.7rem}.member-actions button{padding:8px 10px;font-size:.75rem}.membership-review{gap:8px;margin-top:16px}.review-note{flex-basis:100%;margin-left:0}.free-sample-note{font-size:.8rem}.tabs{gap:15px}.tabs .membership-tag{display:block;width:max-content;margin:3px 0 0}.tabs button{font-size:.85rem}.membership-dialog{padding:20px;border-radius:14px}.access-comparison{grid-template-columns:1fr;gap:12px}.access-plan{padding:18px}.purchase-availability{display:block}.purchase-availability button{margin-top:16px;width:100%}.membership-dialog-footer button{width:100%}}

/* Lead hierarchy: the key root is the landmark; additions are supporting colors. */
:root{--lead-added-ink:#a4c8c9;--lead-color-ink:#cab69f}
:root[data-theme=midnight]{--lead-added-ink:#abc8c2;--lead-color-ink:#d5c2a8}
:root[data-theme=ember]{--lead-added-ink:#b5cbc5;--lead-color-ink:#c6b8d5}
:root[data-theme=daylight]{--lead-added-ink:#456672;--lead-color-ink:#766047}
:root[data-theme=surf]{--lead-added-ink:#426c63;--lead-color-ink:#795f48}
:root[data-theme=walnut]{--lead-added-ink:#36584a;--lead-color-ink:#644d2b}
#fretboard button.root{width:34px;height:34px;font-size:.82rem;font-weight:700;background:var(--accent);color:var(--accent-text);border:2px solid var(--accent);box-shadow:0 0 0 1px var(--panel),0 0 0 3px var(--accent)}
#fretboard button:is(.added,.signature){width:27px;height:27px;background:color-mix(in srgb,var(--note-ink) 10%,var(--panel));color:var(--note-ink);border:1.5px solid var(--note-ink);font-weight:500;font-size:.72rem}
#fretboard button.added,#fretLegend .added-dot{--note-ink:var(--lead-added-ink)}
#fretboard button.signature,#fretLegend .signature-dot{--note-ink:var(--lead-color-ink);border-style:dashed}
#fretLegend :is(.added-dot,.signature-dot){width:13px;height:13px;background:color-mix(in srgb,var(--note-ink) 10%,var(--panel));border:1.5px solid var(--note-ink)}
#fretLegend .signature-dot{border-style:dashed}
#fretLegend .root-dot{width:15px;height:15px;background:var(--accent);box-shadow:0 0 0 1px var(--panel),0 0 0 3px var(--accent);margin:0 3px}
#fretLegend .root-key{color:var(--text);font-weight:700}
#fretboard button.root.lead-both{width:35px;height:35px;font-size:.78rem}
#fretboard button:is(.added,.signature).lead-both{width:31px;height:31px;font-size:.7rem}
#fretboard button:is(.added,.signature).lead-both small{font-size:.58rem}
#fretboard button.root.lead-landing{outline-color:var(--secondary);outline-offset:5px}
#fretboard button:focus-visible{outline:3px solid var(--focus);outline-offset:5px}

.product-intro{margin:22px 0 16px;max-width:70ch}.product-intro h2{font-size:clamp(1.15rem,2vw,1.5rem);margin:0 0 8px}.product-intro p{font-size:.9rem;color:var(--muted);margin:0 0 8px}.product-intro a{font-size:.8rem;color:var(--accent);text-underline-offset:3px}