:root{--bg:#14121f;--card:#232136;--line:#34314d;--fg:#f3f1ff;--muted:#aaa6c1;--acc:#ff9a45;color-scheme:dark}
@media(prefers-color-scheme:light){:root{--bg:#f7f6fb;--card:#fff;--line:#e3e0ef;--fg:#1d1a2e;--muted:#625e77;color-scheme:light}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.5 system-ui,-apple-system,"Segoe UI",sans-serif}
[hidden]{display:none!important}button,input{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible,a:focus-visible,label:focus-visible{outline:3px solid var(--acc);outline-offset:3px}
.topbar{max-width:920px;margin:auto;padding:18px 20px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}
.brand{color:var(--fg);text-decoration:none;font-size:1.2rem;font-weight:750}.brand b{color:var(--acc)}.area{color:var(--muted)}
main{max-width:920px;margin:auto;padding:28px 20px 80px}.intro h1{font-size:clamp(1.65rem,5vw,2.4rem);margin:0}.intro p{color:var(--muted);margin:5px 0 28px}
.library,.sheet,.personal{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px;margin-bottom:18px}
.library label{display:block;font-weight:650;margin-bottom:8px}#search{width:100%;min-height:48px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--fg);padding:10px 14px}
.subtle,.personal p{color:var(--muted)}#count{font-size:.85rem;margin:11px 0}.results{display:grid;gap:8px}.result{border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--fg);min-height:64px;padding:10px 14px;text-align:left;display:flex;align-items:center;justify-content:space-between;gap:12px}
.result:hover{border-color:var(--acc)}.result strong,.result span{display:block}.result span,.result small{color:var(--muted)}.empty{color:var(--muted);padding:16px 0}
.text-button{background:none;border:0;color:var(--acc);padding:8px 0}.sheet h2{font-size:1.7rem;margin:8px 0 0}.sheet #songArtist{margin:0 0 18px}
.toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:12px 0}.key-box{display:flex;gap:8px;align-items:baseline}.key-box span{color:var(--muted)}.key-box strong{color:var(--acc);font-size:1.3rem}.key-buttons{display:flex;gap:6px}.key-buttons button{border:1px solid var(--line);border-radius:9px;background:var(--bg);color:var(--fg);min-width:44px;min-height:44px;padding:8px}
.chords{overflow-x:auto;padding:20px 0 8px;font-size:1.05rem;line-height:1.85}.song-line{white-space:pre;margin:4px 0 12px;min-height:1.4em}.segment{display:inline-flex;flex-direction:column;vertical-align:bottom;line-height:1.3}.segment .chord{font-weight:750;color:var(--acc);height:1.4em}.segment .lyric{min-height:1.3em}.plain{white-space:pre}.source{border-top:1px solid var(--line);padding-top:10px;font-size:.8rem}
.personal h2{font-size:1rem;margin:0}.personal p{font-size:.9rem}.import-button{display:inline-flex;align-items:center;min-height:44px;border:1px solid var(--acc);border-radius:99px;color:var(--fg);padding:9px 16px;cursor:pointer;font-weight:650}#importStatus{font-size:.85rem}
@media(max-width:520px){main{padding:22px 12px 70px}.library,.sheet,.personal{padding:16px}.toolbar{align-items:flex-start}.key-buttons button{min-width:42px}}