:root{--bg:#15171b;--pn:#22262d;--bt:#2f343d;--tx:#eceef1;--mu:#8e95a1;--ac:#3b82f6;--panel:#fff;box-sizing:border-box;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
:root[data-theme=light]{--bg:#eef0f3;--pn:#fff;--bt:#e2e5ea;--tx:#15171b;--mu:#667;--ac:#2563eb;--panel:#fff}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--tx);font:15px/1.3 -apple-system,system-ui,"Segoe UI",sans-serif}
.r{display:flex;flex-wrap:wrap;gap:8px;padding:8px 12px;align-items:center}
button,input,select{font:inherit;color:var(--tx);background:var(--bt);border:0;border-radius:8px;padding:10px 14px;min-height:44px}
input{background:var(--pn);border:1px solid var(--bt);flex:1;min-width:110px}
.page-width-control{display:flex;align-items:center;gap:8px;color:var(--mu);font-size:13px;white-space:nowrap}
.page-width-control input{flex:0 0 88px;min-width:88px;padding:8px 10px}
.measures-per-line-control{display:flex;align-items:center;gap:8px;color:var(--mu);font-size:13px;white-space:nowrap}
.measures-per-line-control input{flex:0 0 64px;min-width:64px;padding:8px 10px}
.pattern-controls{padding-top:4px;padding-bottom:4px}
.pattern-controls select{flex:1;min-width:110px}
.pattern-controls input{flex:1;min-width:110px}
button.on{background:var(--ac);color:#fff}
#sc{background:var(--panel);margin:4px 0;overflow-x:auto;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
#sc svg{display:block;width:100%;height:auto;outline:1px solid #d1d5db;outline-offset:-1px}
html.draw-mode{touch-action:none}
html.draw-mode #sc,html.draw-mode #sc svg{touch-action:none}
#g{padding:4px 12px}
.drum-input-toggle{padding:0 0 8px}
.drum-grid-nav{padding:0 0 6px}
.gr{display:flex;align-items:center;gap:3px;margin:3px 0}
.gr b{width:92px;font-weight:500;font-size:13px;color:var(--mu)}
.c{flex:1;aspect-ratio:1;max-width:44px;border-radius:50%;border:2px solid var(--mu);background:none;padding:0;min-height:0}
.c.on{background:var(--tx);border-color:var(--tx)}
.c.q{margin-left:6px}
#h{color:var(--mu);font-size:13px;padding:6px 14px 24px}
.file-actions{margin-top:4px;border-top:1px solid var(--bt);padding-top:8px}
.file-actions h2{margin:0 12px;color:var(--mu);font-size:13px;font-weight:600}
.site-footer{padding:10px 16px 28px;color:var(--mu);font-size:13px;line-height:1.5}
.site-footer a{color:var(--ac);text-decoration:none}
.site-footer a:hover{text-decoration:underline}
.app-header{justify-content:space-between;align-items:center;gap:12px;background:#252a31;border-bottom:1px solid #3a4049;padding:12px 16px}
.app-brand{display:flex;flex-direction:column;align-items:flex-start;gap:4px}
.app-brand b{display:inline-block;color:#fff;font-size:21px;font-weight:800}
.app-brand-accent{color:#70cf70}
.app-about{color:#a3a8b1;font-size:13px;text-decoration:underline;text-underline-offset:2px}
.app-about:hover{color:var(--tx)}
.footer-actions{justify-content:flex-start;gap:8px;padding:0 12px 8px;flex-wrap:wrap}
.action-link{display:inline-flex;align-items:center;justify-content:center;background:var(--bt);color:var(--tx);border-radius:8px;padding:10px 14px;min-height:44px;text-decoration:none;font:inherit}
.action-link:hover{filter:brightness(1.08)}
.keyboard-shell{padding:10px 0 6px}
.keyboard-controls{display:flex;align-items:center;justify-content:center;gap:8px;padding:8px 0 10px;color:var(--mu);font-size:13px}
.keyboard-octave{min-width:110px;text-align:center;color:var(--tx);font-weight:600}
.keyboard-frame{position:relative;overflow-x:auto;margin:0;padding-bottom:10px}
.keyboard-surface{position:relative;margin:0 auto;border-radius:12px;border:1px solid #b9bec8;background:linear-gradient(#f7f9fb,#e9edf3);box-shadow:inset 0 0 0 1px rgba(255,255,255,.65);}
.keyboard-key{position:absolute;border:1px solid rgba(18,22,28,.6);border-radius:0 0 10px 10px;padding:0;min-height:0;cursor:pointer;display:flex;align-items:flex-end;justify-content:center;font-size:11px;user-select:none;background:var(--panel);color:var(--tx);font-weight:600;box-shadow:inset 0 -2px 0 rgba(0,0,0,.1)}
.keyboard-white{background:linear-gradient(#fff,#e3e7ed);color:#15171b;font-size:12px;z-index:1}
.keyboard-white:hover,.keyboard-black:hover{filter:brightness(.98)}
.keyboard-black{background:linear-gradient(#2f343d,#161a20);color:#fff;border-color:#090b0d;z-index:2;border-radius:0 0 8px 8px;box-shadow:inset 0 -2px 0 rgba(255,255,255,.12)}