:root{--bg:#101923;--text:#eef3f5;--muted:#9bacb7;--accent:#e5a94d;--line:#385063;--focus:#71c5c2;--shadow:0 16px 42px rgba(0,0,0,.24)}
*{box-sizing:border-box}body{margin:0;min-width:320px;background:radial-gradient(circle at 80% 0,#203342 0,transparent 34rem),var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.45}.app-shell{width:min(1120px,calc(100% - 32px));margin:0 auto;padding:54px 0 30px}.app-header{margin-bottom:32px}.eyebrow{color:var(--accent);font-size:.72rem;font-weight:750;letter-spacing:.15em;margin:0 0 8px}.app-header h1{font-size:clamp(2rem,5vw,3.45rem);line-height:1.05;letter-spacing:-.045em;margin:0}.app-header>p:last-child{color:var(--muted);font-size:1.05rem;margin:12px 0 0}
.layout{display:grid;grid-template-columns:minmax(290px,.86fr) minmax(390px,1.35fr);gap:22px;align-items:start}.card{background:linear-gradient(145deg,rgba(32,48,64,.97),rgba(23,36,49,.97));border:1px solid rgba(120,151,168,.2);border-radius:20px;box-shadow:var(--shadow);padding:25px}.settings-card{grid-row:span 2}.card-heading{display:flex;align-items:center;gap:10px;margin-bottom:22px}.card-heading h2{font-size:1rem;margin:0}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}label,legend{font-size:.83rem;color:#cbd5db;font-weight:650}select{display:block;width:100%;margin-top:7px;padding:11px 12px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--text);font:inherit}.mode-control,.instrument-control{border:0;margin:22px 0 19px;padding:0}.mode-control legend,.instrument-control legend{margin-bottom:7px}.segmented{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);border-radius:10px;padding:3px}.segmented input,.switch-row input{position:absolute;opacity:0}.segmented label{text-align:center;padding:8px;border-radius:7px;cursor:pointer;color:var(--muted)}.segmented input:checked+label{background:var(--accent);color:#1a2026}.tempo-label{display:flex;justify-content:space-between}.tempo-label output{color:var(--accent);font-variant-numeric:tabular-nums}input[type=range]{width:100%;margin:13px 0 20px;accent-color:var(--accent)}.switch-row{display:flex;align-items:center;gap:10px;cursor:pointer}.switch{width:38px;height:22px;border-radius:20px;background:#415565;position:relative;transition:.2s}.switch:after{content:"";width:16px;height:16px;background:#d9e2e6;border-radius:50%;position:absolute;top:3px;left:3px;transition:.2s}.switch-row input:checked+.switch{background:var(--accent)}.switch-row input:checked+.switch:after{transform:translateX(16px);background:#19232c}
.action-row,.transport{display:flex;gap:10px;margin-top:24px;flex-wrap:wrap}.button{border:1px solid transparent;border-radius:10px;padding:11px 15px;color:var(--text);font:700 .88rem inherit;cursor:pointer;transition:transform .15s,background .15s,border-color .15s}.button:hover{transform:translateY(-1px)}.button.primary{background:var(--accent);color:#162029}.button.primary:hover{background:#f3bd68}.button.secondary,.button.stop{background:transparent;border-color:var(--line)}.button.secondary:hover,.button.stop:hover{background:#2b4050}.action-row .primary{flex:1}
.result-meta{color:var(--accent);font-size:.83rem;font-weight:700;margin:-5px 0 14px}.roman-progression{font-size:clamp(1.55rem,3.3vw,2.25rem);font-weight:780;letter-spacing:.02em;margin:0 0 20px}.chord-list{display:flex;gap:9px;flex-wrap:wrap}.chord-button{background:#152431;border:1px solid var(--line);border-radius:11px;min-width:65px;padding:11px 13px;color:var(--text);font:750 1rem inherit;cursor:pointer;transition:.16s}.chord-button:hover,.chord-button.selected{border-color:var(--accent);background:#2b3c45}.chord-button.playing{background:var(--accent);border-color:var(--accent);color:#17212a;box-shadow:0 0 0 4px rgba(229,169,77,.13)}
.progression-voicings{border-top:1px solid rgba(120,151,168,.18);margin-top:22px;padding-top:18px}.progression-voicings h3{font-size:.86rem;margin:0 0 12px}.progression-fretboards{display:grid;grid-template-columns:repeat(auto-fit,minmax(132px,1fr));gap:10px}.voicing-card{appearance:none;background:#152431;border:1px solid var(--line);border-radius:12px;color:var(--text);cursor:pointer;padding:9px 7px 8px;text-align:left;transition:.16s}.voicing-card:hover,.voicing-card.selected{border-color:var(--accent);background:#2b3c45}.voicing-card.playing{box-shadow:0 0 0 3px rgba(229,169,77,.13)}.voicing-name{display:block;font-size:.86rem;font-weight:780;margin:0 4px 2px}.voicing-card .diagram{display:block;width:100%;min-width:0}.voicing-card .diagram-title{display:none}.voicing-card .diagram .open-label{font-size:11px}.voicing-card .diagram .marker-label{font-size:9px}.voicing-card .diagram .barre{stroke-width:8}.voicing-card .diagram .fret-position{font-size:10px}
.description{border-top:1px solid rgba(120,151,168,.18);color:var(--muted);font-size:.92rem;margin:22px 0 0;padding-top:18px}.fret-card{min-height:300px}.fretboard-wrap{min-height:225px;display:grid;place-items:center}.diagram{width:min(100%,430px);height:auto}.diagram text{font-family:Inter,system-ui,sans-serif}.diagram .diagram-title{fill:var(--text);font-size:20px;font-weight:750}.diagram .nut,.diagram .string,.diagram .fret{stroke:#b5c4ca}.diagram .nut{stroke-width:7}.diagram .string{stroke-width:1.4}.diagram .fret{stroke-width:1.2}.diagram .marker{fill:var(--accent)}.diagram .marker-label,.diagram .open-label{fill:#17212a;font-size:12px;font-weight:800;text-anchor:middle;dominant-baseline:central}.diagram .open-label{fill:#ced9de;font-size:15px}.diagram .string-name{fill:var(--muted);font-size:11px;font-weight:750;text-anchor:middle}.diagram .barre{stroke:var(--accent);stroke-width:11;stroke-linecap:round}.fret-position{fill:var(--muted);font-size:12px;font-weight:700}.guide{color:var(--muted);font-size:.85rem;border-top:1px solid rgba(120,151,168,.19);margin-top:26px;padding:22px 2px}
button:focus-visible,select:focus-visible,input:focus-visible+label,input:focus-visible+.switch,input[type=range]:focus-visible{outline:3px solid var(--focus);outline-offset:3px}@media(max-width:760px){.app-shell{width:min(100% - 24px,600px);padding-top:32px}.layout{grid-template-columns:1fr}.settings-card{grid-row:auto}.card{padding:21px}.fret-card{min-height:0}}@media(max-width:600px){.progression-fretboards{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:390px){.form-grid{grid-template-columns:1fr}.action-row .button{width:100%}}