:root{
  --bg:#17120f; --surface:#211a16; --raised:#2c231d; --line:#3b3028;
  --ink:#efe6d6; --muted:#a39584; --brass:#d6ab5a; --brass-ink:#1d1509; --sage:#86bfa9;
  --bad:#e27a62; --extra:#b8a0d8;
  --serif:"Young Serif",Georgia,"Times New Roman",serif;
  --sans:"Figtree",system-ui,-apple-system,"Segoe UI",sans-serif;
  color-scheme:dark;
}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font:16px/1.5 var(--sans);-webkit-tap-highlight-color:transparent;min-height:100vh}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--brass);outline-offset:2px;border-radius:6px}
svg{max-width:100%;display:block}

.app{max-width:1260px;margin:0 auto;padding:0 16px calc(48px + env(safe-area-inset-bottom));display:grid;grid-template-columns:minmax(0,1fr)}
main{min-width:0}
.acc{font-family:var(--sans);font-size:.78em;font-weight:500;margin-left:.02em;position:relative;top:-.12em}
.topbar{position:sticky;top:0;z-index:10;background:var(--bg);display:flex;gap:10px;align-items:center;margin:0 -16px;padding:10px 16px;padding-top:calc(10px + env(safe-area-inset-top));border-bottom:1px solid var(--line)}
.keybtn{display:flex;align-items:center;gap:6px;padding:0 12px;height:44px;border-radius:12px;background:var(--surface);font-family:var(--serif);font-size:18px;white-space:nowrap}
.keybtn svg{width:10px;height:10px;fill:none;stroke:var(--muted);stroke-width:2}
.topbar .tabs{flex:1;width:auto}
.topbar .tabs button{flex:1;padding:8px 6px}
.sheet-title{display:none}
.scrim{position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:19;opacity:0;pointer-events:none;transition:opacity .2s}
.scrim.open{opacity:1;pointer-events:auto}
@media (max-width:899px){
  .side{position:fixed;left:0;right:0;bottom:0;z-index:20;background:var(--surface);border-radius:22px 22px 0 0;padding:10px 16px calc(20px + env(safe-area-inset-bottom));transform:translateY(105%);transition:transform .25s ease;visibility:hidden}
  .side.open{transform:none;visibility:visible}
  .side::before{content:"";display:block;width:40px;height:4px;border-radius:4px;background:var(--line);margin:0 auto 12px}
  .sheet-title{display:block;font-family:var(--serif);font-size:20px;text-align:center;margin:0 0 12px}
  .dial::before{background:radial-gradient(circle,var(--bg) 0 62%,transparent 62%)}
  .dial{width:min(320px,86vw)}
  .hint{display:none}
}
@media (min-width:900px){
  .app{grid-template-columns:360px minmax(0,1fr);gap:40px;padding:24px 20px 64px;align-items:start}
  .side{position:sticky;top:24px}
  .topbar{position:static;margin:0;padding:0;border:0;background:none}
  .keybtn,.scrim{display:none}
  .topbar .tabs{flex:0 0 auto}
  .topbar .tabs button{flex:0 0 auto;padding:8px 16px}
}

/* Circle of fifths */
.dial{position:relative;width:min(340px,88vw);aspect-ratio:1;margin:0 auto}
.dial::before,.dial::after{content:"";position:absolute;border-radius:50%;border:1px solid var(--line)}
.dial::before{inset:0;background:radial-gradient(circle,var(--surface) 0 62%,transparent 62%)}
.dial::after{inset:17%}
.k{position:absolute;transform:translate(-50%,-50%);border-radius:50%;display:flex;align-items:center;justify-content:center;white-space:nowrap;font-family:var(--serif);transition:background .15s,color .15s;z-index:1}
.k.maj{width:46px;height:46px;font-size:19px}
.k.min{width:38px;height:38px;font-size:14px;color:var(--muted)}
.k:hover{background:var(--raised)}
.k[aria-pressed="true"]{background:var(--brass);color:var(--brass-ink)}
.center{position:absolute;inset:32%;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;z-index:1}
.center .name{font-family:var(--serif);font-size:clamp(28px,8vw,40px);line-height:1}
.center .sub{color:var(--muted);font-size:13px;margin-top:4px}
.enh{margin-top:6px;font-size:12px;color:var(--brass);padding:2px 8px;border:1px solid var(--line);border-radius:99px}
.hint{color:var(--muted);font-size:13px;text-align:center;margin:14px auto 0;max-width:30ch}

/* Tabs */
.tabs{display:flex;gap:4px;padding:4px;background:var(--surface);border-radius:12px}
.tabs button{padding:8px 16px;border-radius:9px;color:var(--muted);font-weight:500;white-space:nowrap}
.tabs button[aria-selected="true"]{background:var(--raised);color:var(--ink)}
.head{display:flex;flex-wrap:wrap;align-items:end;justify-content:space-between;gap:12px 20px;margin:24px 0 18px}
h1{font-family:var(--serif);font-weight:400;font-size:clamp(34px,6vw,52px);line-height:1.05;margin:0}
h1 small{display:block;font-family:var(--sans);font-size:15px;line-height:1.4;color:var(--muted);margin-top:8px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:9px 14px;border:1px solid var(--line);border-radius:10px;font-weight:500}
.btn:hover{background:var(--surface)}
.btn svg{width:14px;height:14px;fill:currentColor}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.seg button{padding:8px 12px;color:var(--muted);font-size:14px}
.seg button[aria-pressed="true"]{background:var(--raised);color:var(--ink)}

/* Scale */
.degrees{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(118px,1fr));gap:10px}
.deg{width:100%;text-align:left;padding:14px;background:var(--surface);border-radius:14px;border:1px solid transparent;display:grid;gap:2px}
.deg:hover{border-color:var(--line)}
.deg .note{font-family:var(--serif);font-size:32px;line-height:1.1}
.deg .sym{color:var(--brass);font-weight:600}
.deg.root .note{color:var(--brass)}
.formula{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin:16px 0 8px;color:var(--muted);font-size:14px}
.flabel{flex-basis:100%;margin-bottom:2px}
.formula b{font-weight:600;color:var(--ink);padding:2px 9px;border-radius:99px;background:var(--surface)}
.formula b.half{background:transparent;border:1px solid var(--brass);color:var(--brass)}
.fb-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin:28px 0 10px}
.fb-head h2{margin:0;font-family:var(--serif);font-weight:400;font-size:22px}
.fret{overflow-x:auto;background:var(--surface);border-radius:14px;padding:10px 6px 4px}
.fret svg{min-width:760px;width:100%}
.fret-wide svg{min-width:903px} /* 18 frets at the same scale as 15 frets at 760px */
.fret .fn{cursor:pointer}
.fret .fn:hover circle{stroke:var(--ink);stroke-width:1.5}

/* Chords */
.chords{display:grid;gap:12px;grid-template-columns:minmax(0,1fr)}
.chord{background:var(--surface);border-radius:14px;padding:16px;display:grid;gap:12px;grid-template-columns:1fr}
@media (min-width:640px){.chord{grid-template-columns:150px 1fr;align-items:center}}
.chord .rn{color:var(--brass);font-weight:600;font-size:14px}
.chord .cn{font-family:var(--serif);font-size:30px;line-height:1.1}
.chord .cnotes{color:var(--muted);font-size:14px}
.chord .cq{display:block}
.voicings{display:flex;gap:10px;overflow-x:auto;padding-bottom:2px}
.vo{flex:0 0 auto;background:var(--bg);border-radius:10px;padding:8px 8px 6px;display:grid;justify-items:center;gap:2px;border:1px solid transparent}
.vo:hover{border-color:var(--line)}
.vo svg{width:92px;height:auto}
.vo span{font-size:11px;color:var(--muted)}

/* Modes */
.modes{display:grid;gap:10px}
.mode{background:var(--surface);border-radius:14px;padding:14px 16px;display:grid;gap:10px;grid-template-columns:1fr auto;align-items:start}
.mode.current{box-shadow:inset 3px 0 0 var(--brass)}
.mode h3{margin:0;font-family:var(--serif);font-weight:400;font-size:24px;line-height:1.15}
.mode h3 em{font-style:normal;font-family:var(--sans);font-size:13px;color:var(--muted);margin-left:6px}
.mode p{margin:2px 0 0;color:var(--muted);font-size:14px}
.mnotes{grid-column:1/-1;display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:4px;padding-bottom:10px}
.mn{position:relative;width:100%;min-width:0;text-align:center;padding:6px 2px;border-radius:8px;background:var(--bg);cursor:pointer;transition:box-shadow .15s}
.mn:hover,.mn.hit{box-shadow:inset 0 0 0 1px var(--brass)}
.mn.oct{opacity:.55}
.mn.oct.hit,.mn.oct:hover{opacity:1}
.gap{position:absolute;right:0;bottom:-9px;transform:translateX(calc(50% + 2px));z-index:1;min-width:18px;height:18px;padding:0 4px;border-radius:99px;background:var(--surface);border:1px solid var(--line);font-size:10.5px;font-weight:600;line-height:16px;color:var(--ink)}
.gap.half{border-color:var(--brass);color:var(--brass)}
.gap.wide{border-color:var(--sage);color:var(--sage)}
.lg-pill{display:inline-block;min-width:18px;height:18px;padding:0 4px;border-radius:99px;border:1px solid var(--brass);color:var(--brass);font-size:10.5px;font-weight:600;line-height:16px;text-align:center;margin:0 6px 0 14px}
.mn .n{font-family:var(--serif);font-size:18px;display:block;line-height:1.2}
.mn .s{font-size:12px;color:var(--muted)}
.mn.char{background:color-mix(in srgb,var(--sage) 22%,var(--bg))}
.mn.char .s{color:var(--sage);font-weight:600}
.icon{width:38px;height:38px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center}
.icon:hover{background:var(--raised)}
.icon svg{width:13px;height:13px;fill:currentColor}
.note-legend{color:var(--muted);font-size:13px;margin:0 0 14px}
.note-legend i{display:inline-block;width:10px;height:10px;border-radius:3px;background:color-mix(in srgb,var(--sage) 45%,var(--bg));margin-right:6px;vertical-align:-1px}

@media (max-width:599px){
  h1{font-size:30px} h1 small{font-size:14px}
  .head{flex-wrap:nowrap;align-items:center}
  .head:has(.seg){flex-wrap:wrap}
  .btn[data-act=playscale]{width:46px;height:46px;padding:0;justify-content:center;border-radius:50%;flex:0 0 auto}
  .btxt{display:none}
  .degrees{grid-template-columns:repeat(4,minmax(0,1fr));gap:6px}
  .deg{padding:10px 8px 11px;border-radius:12px}
  .deg .note{font-size:22px}
  .chord{padding:14px}
  .chord>div:first-child{display:flex;align-items:baseline;flex-wrap:wrap;column-gap:10px}
  .chord .cn{font-size:26px;order:-1}
  .chord .cnotes{flex-basis:100%}
  .chord .cq{display:inline;margin-left:8px;opacity:.8}
  .voicings{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;overflow:visible}
  .vo{padding:8px 4px 6px}
  .vo svg{width:100%}
  .mode{padding:12px}
  .mode h3{font-size:20px}
  .mnotes{gap:3px}
  .mn{padding:6px 0}
  .mn .n{font-size:14px}
  .gap{transform:translateX(calc(50% + 1.5px));min-width:16px;height:16px;line-height:14px;font-size:10px;padding:0 3px}
  .mn .s{font-size:11px}
  .fret svg{min-width:680px}
  .fret-wide svg{min-width:808px}
}
.deg.hit{border-color:var(--brass);background:var(--raised)}
.fret .fn.lit circle{stroke:var(--brass);stroke-width:3}
.vo.hit,.icon.hit,.btn.hit{border-color:var(--brass)}
.update{position:fixed;left:50%;bottom:calc(16px + env(safe-area-inset-bottom));transform:translateX(-50%);z-index:30;display:flex;gap:12px;align-items:center;white-space:nowrap;background:var(--raised);border:1px solid var(--line);border-radius:12px;padding:8px 8px 8px 16px;font-size:14px;box-shadow:0 8px 30px rgba(0,0,0,.4)}
.update button{color:var(--brass);font-weight:600;padding:6px 8px}
.chord .fnc{color:var(--muted);font-weight:500}
.detail{margin-top:12px;background:var(--surface);border-radius:14px;padding:16px 18px;max-width:72ch}
.detail p{margin:6px 0 0;line-height:1.55}
.detail h2{margin:2px 0 0;font-family:var(--serif);font-weight:400;font-size:24px;line-height:1.2}
.detail h3{margin:16px 0 0;font-size:14px;font-weight:600;color:var(--brass)}
.dt-top{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;align-items:flex-start;margin-bottom:6px}
.dt-note{font-family:var(--serif);font-size:30px;line-height:1}
.dt-sym{font-family:var(--sans);font-size:15px;font-weight:600;color:var(--brass);margin-left:10px;vertical-align:.35em}
.dt-meta{color:var(--muted);font-size:14px;margin:2px 0 0!important}
.dt-play{display:flex;gap:8px}
.dt-ex{color:var(--muted);font-size:14px}
.dscrim{position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:39;opacity:0;pointer-events:none;transition:opacity .2s}
.dscrim.open{opacity:1;pointer-events:auto}
.drawer{position:fixed;z-index:40;background:var(--surface);overflow-y:auto;overscroll-behavior:contain;visibility:hidden;transition:transform .25s ease,visibility 0s linear .25s}
.drawer.open{visibility:visible;transform:none;transition:transform .25s ease}
.drawer .detail{background:none;padding:0;margin:0;max-width:none}
.drawer .dt-top{padding-right:48px}
.dclose{position:absolute;top:14px;right:14px;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line);z-index:1}
.dclose:hover{background:var(--raised)}
.dclose svg{width:13px;height:13px;stroke:var(--ink);stroke-width:1.8;stroke-linecap:round;fill:none}
@media (max-width:899px){
  .drawer{left:0;right:0;bottom:0;max-height:88vh;border-radius:22px 22px 0 0;padding:10px 20px calc(24px + env(safe-area-inset-bottom));transform:translateY(105%)}
  .drawer::before{content:"";display:block;width:40px;height:4px;border-radius:4px;background:var(--line);margin:0 auto 14px}
  .dclose{top:22px}
}
@media (min-width:900px){
  .drawer{top:0;right:0;bottom:0;width:440px;padding:32px 28px;border-left:1px solid var(--line);transform:translateX(105%)}
}

/* scale cards: note plays, band explains */
.degi{display:flex;flex-direction:column;background:var(--surface);border-radius:14px;overflow:hidden;border:1px solid transparent;transition:border-color .15s}
.degi:hover{border-color:var(--line)}
.degi .deg{flex:1;height:auto;background:none;border:0;border-radius:0;padding:14px 14px 10px}
.degi .deg:hover{border:0}
.degi .deg.hit{background:var(--raised)}
.degi:has(.deg.hit){border-color:var(--brass)}
.band{display:flex;align-items:center;justify-content:space-between;gap:6px;width:100%;min-height:36px;padding:8px 10px 8px 14px;border-top:1px solid var(--line);text-align:left;font-size:13px;line-height:1.25;color:var(--muted);transition:color .15s,background .15s}
.band svg{flex:0 0 auto;width:7px;height:11px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;opacity:.8}
.band:hover{color:var(--ink);background:var(--raised)}
.band:focus-visible{outline-offset:-2px;border-radius:0 0 12px 12px}
@media (max-width:599px){
  .degi{border-radius:12px}
  .degi .deg{padding:10px 8px 8px}
  .band{min-height:40px;padding:6px 6px 7px 8px;font-size:11px;line-height:1.2;gap:3px}
  .band svg{width:6px;height:10px}
}

/* minor: harmonic dominant */
.chord-alt{grid-column:1/-1;display:grid;gap:12px;grid-template-columns:1fr;border-top:1px dashed var(--line);padding-top:14px}
@media (min-width:640px){.chord-alt{grid-template-columns:150px 1fr;align-items:center}}
.alt-tag{font-size:12px;font-weight:600;color:var(--sage);margin-bottom:2px}
.chord-alt .cq{display:block;margin-top:4px;line-height:1.35}
@media (max-width:599px){
  .chord-alt>div:first-child{display:flex;align-items:baseline;flex-wrap:wrap;column-gap:10px}
  .chord-alt .alt-tag{flex-basis:100%;order:-2}
  .chord-alt .cn{font-size:26px;order:-1}
  .chord-alt .cnotes{flex-basis:100%}
  .chord-alt .cq{display:block;margin:4px 0 0;opacity:.8}
}

/* practice */
@media (max-width:420px){.topbar .tabs button{padding:8px 2px;font-size:14px}.keybtn{padding:0 10px;font-size:16px}}
.pr-mode{display:flex;align-items:center;gap:10px;background:var(--surface);border-radius:14px;padding:12px}
.pr-title{flex:1;text-align:center;min-width:0}
.pr-title h2{margin:2px 0 0;font-family:var(--serif);font-weight:400;font-size:26px;line-height:1.15}
.pr-count{font-size:13px;color:var(--muted)}
.pr-dots{display:flex;justify-content:center;gap:2px;margin-top:6px}
.pdot{width:26px;height:26px;display:grid;place-items:center;border-radius:50%}
.pdot i{display:block;width:8px;height:8px;border-radius:50%;background:var(--line)}
.pdot.done i{background:var(--sage)}
.pdot.cur i{background:var(--brass);width:11px;height:11px}
.pr-now{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;margin:18px 2px 10px}
.pr-now .lbl{color:var(--muted);font-size:14px}
.pr-now b{font-family:var(--serif);font-weight:400;font-size:36px;line-height:1}
.pr-now .where{color:var(--muted);font-size:14px}
.pr-prog{margin-left:auto;color:var(--muted);font-size:13px;font-variant-numeric:tabular-nums}
.pfb{padding:10px 6px 4px;transition:box-shadow .15s}
.fret.pfb svg{min-width:0;width:100%;max-width:720px;margin:0 auto}
.pfb.wrong{box-shadow:inset 0 0 0 2px var(--bad)}
.pr-meter{display:flex;align-items:center;gap:12px;margin:12px 2px 0;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}
.pr-meter #prheard{min-width:9.5em}
.lvl{flex:1;height:6px;border-radius:3px;background:var(--surface);overflow:hidden}
.lvl i{display:block;height:100%;width:0;background:var(--sage)}
.pr-msg{min-height:1.5em;margin:10px 2px 0;font-size:14px;color:var(--muted)}
.pr-msg.bad{color:var(--bad)}
.pr-msg.good{color:var(--sage)}
.pr-ctrl{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.btn.primary{background:var(--brass);color:var(--brass-ink);border-color:var(--brass)}
.btn.primary:hover{background:#e0b86c}
.btn.primary.on{background:transparent;color:var(--brass)}
.btn.primary svg{fill:currentColor;width:15px;height:15px}
@keyframes prPulse{from{transform:scale(1);opacity:.9}to{transform:scale(1.55);opacity:0}}
.cur-ring{transform-box:fill-box;transform-origin:center;animation:prPulse 1.1s ease-out infinite}
@media (max-width:599px){
  .pr-title h2{font-size:22px}
  .pr-now b{font-size:30px}
  .pr-ctrl{display:grid;grid-template-columns:1fr 1fr;gap:8px}
  .pr-ctrl .btn{justify-content:center}
  .pr-ctrl .btn.primary{height:48px}
  .pr-ctrl .btn.primary,.pr-ctrl .btn[data-act=plisten]{grid-column:1/-1}
  .pr-ctrl .seg{display:flex}
  .pr-ctrl .seg button{flex:1;white-space:nowrap;padding:9px 6px}
}

/* language switch */
.foot{display:flex;justify-content:center;margin:40px 0 0;padding-top:20px;border-top:1px solid var(--line)}
.foot .seg button{padding:7px 14px;font-size:13px}

.kb-short{display:none}
@media (max-width:359px){
  .kb-full{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
  .kb-short{display:inline}
  .topbar{gap:8px}
  .topbar .tabs{min-width:0}
  .topbar .tabs button{font-size:13px;padding:8px 1px}
}

/* scale: live mic */
.head-btns{display:flex;gap:8px;flex:0 0 auto}
.btn.mic svg{fill:currentColor;width:15px;height:15px}
.btn.mic.on{border-color:var(--brass);color:var(--brass)}
.livebar{display:flex;align-items:center;gap:12px;margin:0 0 12px;padding:10px 14px;background:var(--surface);border-radius:12px;min-height:52px}
.live-chip{display:flex;align-items:baseline;gap:8px;min-width:0;color:var(--muted);font-size:14px}
.live-chip b{font-family:var(--serif);font-weight:400;font-size:26px;line-height:1;color:var(--ink)}
.live-chip span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.live-chip.in b{color:var(--brass)}
.live-chip.in span{color:var(--ink)}
.live-chip.out b,.live-chip.out span{color:var(--bad)}
.livebar .lvl{flex:1;min-width:32px}
.livebar #prheard{font-size:12px;color:var(--muted);white-space:nowrap;font-variant-numeric:tabular-nums;min-width:8.5em;text-align:right}
.live-err{color:var(--bad);font-size:14px;margin:0 0 12px}
.degi.live{border-color:var(--brass);background:var(--raised)}
.degi.live .deg .note{color:var(--brass)}
.fret .fn.live circle{fill:var(--brass);stroke:var(--ink);stroke-width:2}
@media (max-width:599px){
  .btn.mic{width:46px;height:46px;padding:0;justify-content:center;border-radius:50%}
  .livebar #prheard{display:none}
}

/* practice focus mode (tablet/desktop) */
.ico{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.fz-enter{display:none}
@media (min-width:600px){.fz-enter{display:inline-flex}}
body.focus .side,body.focus .topbar,body.focus .foot,body.focus .scrim{display:none!important}
body.focus .app{display:block;max-width:none;padding:0}
.fz{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;gap:12px;max-width:1400px;margin:0 auto;padding:calc(18px + env(safe-area-inset-top)) 32px calc(18px + env(safe-area-inset-bottom))}
.fz-top{display:flex;align-items:center;justify-content:space-between;gap:16px}
.fz-mode{display:flex;align-items:center;gap:12px;min-width:0;flex-wrap:wrap}
.fz-mode h2{margin:0;font-family:var(--serif);font-weight:400;font-size:26px;line-height:1.1}
.fz-mode .pr-dots{margin:0 0 0 8px}
.fz-main{flex:1;display:flex;flex-direction:column;justify-content:center;gap:14px;min-height:0}
.fz-now{display:flex;align-items:baseline;justify-content:center;gap:18px;flex-wrap:wrap}
.fz-now b{font-family:var(--serif);font-weight:400;font-size:clamp(64px,9vw,112px);line-height:.95;color:var(--brass)}
.fz-now .lbl,.fz-now .where{color:var(--muted);font-size:clamp(16px,1.6vw,20px)}
.fz-progress{width:100%;max-width:640px;height:4px;margin:0 auto;border-radius:2px;background:var(--surface);overflow:hidden}
.fz-progress i{display:block;height:100%;background:var(--sage);transition:width .2s ease}
.fz .fret.pfb svg{max-width:none;max-height:calc(100dvh - 360px);min-height:180px}
.fz-board{padding:18px 12px 8px}
.fz .pr-msg{text-align:center;margin:0}
.fz-bottom{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap}
.fz-bottom .btn.primary{height:52px;padding:0 26px;font-size:16px}
.fz-bottom .btn{height:52px}
.fz-meter{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:13px;font-variant-numeric:tabular-nums;white-space:nowrap}
.fz-meter .lvl{flex:none;width:140px}
.fz-meter #prheard{min-width:9.5em}
@media (max-width:899px){
  .fz{padding-left:20px;padding-right:20px}
  .fz-mode .pr-dots{flex-basis:100%;margin:0;justify-content:flex-start}
}

/* motion */
@media (prefers-reduced-motion:reduce){*{transition:none!important}.cur-ring{animation:none}}

/* narrow screens: five tabs + key button must fit without pushing the page sideways */
@media (max-width:899px){
  .topbar .tabs{min-width:0;overflow-x:auto;scrollbar-width:none}
  .topbar .tabs::-webkit-scrollbar{display:none}
  .topbar .tabs button{flex:1 0 auto;padding:8px 4px}
}
@media (max-width:560px){
  .kb-full{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
  .kb-short{display:inline}
  .topbar{gap:8px}
  .topbar .tabs{gap:2px;padding:3px}
  .topbar .tabs button{font-size:13px;padding:8px 2px;letter-spacing:-.01em}
}
@media (max-width:340px){.topbar .tabs button{font-size:12px;padding:8px 1px}}

/* arpeggios */
.arp{display:block;margin-bottom:1.5rem}
.arp-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}
.arp-ctrl{flex-wrap:wrap;gap:10px}
.arp-segs{display:flex;gap:10px;flex-wrap:wrap}

/* barre tag under chord diagrams */
.vo .vo-barre{font-size:10px;font-weight:600;color:var(--brass);letter-spacing:.02em;text-transform:uppercase;line-height:1.1}

/* chord cards: diagram opens the zoom, small buttons underneath */
.vo{cursor:default}
.vo:hover{border-color:transparent}
.vo-dia{display:block;padding:0;border-radius:6px;cursor:zoom-in;width:100%}
.vo-dia svg{margin:0 auto}
.vo-btns{display:flex;gap:6px;margin-top:4px}
.vo-b{display:grid;place-items:center;width:34px;height:28px;border-radius:8px;background:var(--surface);border:1px solid var(--line);color:var(--ink)}
.vo-b:hover{border-color:var(--muted)}
.vo-b svg{width:11px;height:11px;fill:currentColor}
.vo-b svg circle,.vo-b svg path[stroke]{fill:none}
.vo-b.hit{border-color:var(--brass)}
/* enlarged chord */
.cz-dia{margin:14px auto 4px;max-width:300px}
.cz-dia svg{width:100%;height:auto}
.cz-dia .fn{cursor:pointer}
.cz-dia .fn.hit circle,.cz-dia .fn.lit circle{stroke:var(--brass);stroke-width:1.4}
.cz-nav{display:flex;align-items:center;justify-content:center;gap:14px;color:var(--muted);font-size:14px;margin:6px 0 4px}
.cz-play{flex-wrap:wrap;justify-content:center;margin:12px 0 4px}
.cz .dt-ex{text-align:center}
.cz h3+p{text-align:left}

/* inversions */
.inv-btn{margin-top:10px;height:34px;padding:0 12px;font-size:13px}
.inv-btn svg{width:13px;height:13px}
.inv-btn svg path{fill:none}
@media (max-width:599px){.chord .inv-btn{flex-basis:auto}}
@media (min-width:900px){.drawer.wide{width:min(760px,62vw)}}
.bass-dot{display:inline-block;width:10px;height:10px;border-radius:50%;border:2px solid var(--sage);vertical-align:-1px;margin-right:5px}
.inv-intro{color:var(--muted);font-size:14px}
.inv-sets{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:14px 0 12px}
.inv-sets>span{font-size:13px;color:var(--muted)}
.inv-grid{display:grid;gap:8px}
.inv-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.inv-4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:520px){.inv-4{grid-template-columns:repeat(2,minmax(0,1fr))}}
.inv-card{padding:10px 6px 8px;align-content:start}
.inv-card .inv-n{font-size:11px;color:var(--muted);text-align:center;line-height:1.2}
.inv-card .inv-s{font-family:var(--serif);font-weight:400;font-size:18px;color:var(--ink)}
.inv-card .vo-dia svg{width:100%;max-width:92px}
.inv-none{font-size:12px!important;text-align:center;padding:20px 4px}
.inv-play{justify-content:center;margin:14px 0 4px}
.inv-neck{margin-top:8px}
.inv-neck svg{min-width:660px}
.inv-neck .inv-shape{cursor:pointer}
.inv-neck .inv-shape:hover rect,.inv-neck .inv-shape.hit rect{stroke:var(--brass);fill-opacity:.16}
.cz-back{height:34px;padding:0 12px;font-size:13px;margin-bottom:12px;gap:8px}
.inv-wide{font-size:10px!important;color:var(--bad)!important;text-transform:uppercase;letter-spacing:.02em}

/* extra (non-major-scale) modes */
.tag-extra{display:inline-block;margin-left:8px;padding:1px 7px;border-radius:999px;font-family:var(--sans);font-size:11px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--extra);border:1px solid color-mix(in srgb,var(--extra) 55%,transparent);vertical-align:.3em}
.extra-head{margin:28px 0 12px;padding-top:18px;border-top:1px solid var(--line)}
.extra-head h2{margin:0;font-family:var(--serif);font-weight:400;font-size:22px;color:var(--extra)}
.extra-head p{margin:4px 0 0;color:var(--muted);font-size:14px;max-width:70ch}
.mode.extra{box-shadow:inset 3px 0 0 var(--extra);background:color-mix(in srgb,var(--extra) 6%,var(--surface))}
.mode.extra h3 .tag-extra{font-size:10px}
.mode .mode-ctx{color:var(--ink);opacity:.85;margin-top:6px}
.mode.extra .mn:hover,.mode.extra .mn.hit{box-shadow:inset 0 0 0 1px var(--extra)}

/* extra modes in practice */
.pdot.extra i{background:color-mix(in srgb,var(--extra) 45%,var(--line))}
.pdot.extra.done i{background:var(--extra)}
.pdot.extra.cur i{background:var(--extra)}
.pr-title h2 .tag-extra,.fz-mode h2 .tag-extra{font-size:10px;vertical-align:.45em}

/* practice: modes / arpeggios switch */
.pr-kind{margin:0 0 14px}
.pr-kind button{min-width:96px}
.pr-rn{display:block;font-family:var(--sans);font-size:13px;font-weight:600;color:var(--brass);margin-top:2px}
.fz-mode h2 .pr-rn{font-size:12px}