*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{background:#f5f5f5;justify-content:center;align-items:center;min-height:100vh;padding:2rem;font-family:system-ui,sans-serif;display:flex}@media (prefers-color-scheme:dark){body{color:#e0e0e0;background:#1a1a1a}}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.app{background:#fff;border-radius:12px;max-width:700px;margin:0 auto;padding:2rem;box-shadow:0 4px 24px #00000014}h1{margin-bottom:1.5rem;font-size:1.5rem}h2{margin-bottom:.4rem;font-size:1rem;font-weight:600}.hint{color:#888;margin-bottom:.75rem;font-size:.8rem}section{margin-bottom:2rem}.menubar{gap:8px;display:flex}.dropdown-wrapper{position:relative}.menu-trigger{cursor:pointer;background:#fff;border:1px solid #ddd;border-radius:8px;padding:8px 14px;font-size:.9rem;transition:background .15s}.menu-trigger:hover,.menu-trigger.open{background:#f0f0f0}.menu-trigger:focus-visible{outline-offset:2px;outline:2px solid #4f7dff}.dropdown{z-index:10;background:#fff;border:1px solid #ddd;border-radius:10px;min-width:200px;padding:6px;position:absolute;top:calc(100% + 6px);left:0;box-shadow:0 8px 24px #0000001a}.menu-item{cursor:pointer;text-align:left;background:0 0;border:none;border-radius:6px;align-items:center;gap:10px;width:100%;padding:8px 10px;font-size:.9rem;display:flex}.menu-item:hover,.menu-item:focus{background:#f5f5f5;outline:none}.menu-item:focus-visible{outline-offset:-2px;outline:2px solid #4f7dff}.menu-item-label{flex:1}.menu-item-shortcut{color:#aaa;font-size:.75rem}.grid{grid-template-rows:repeat(4,1fr);gap:6px;display:inline-grid}.grid-row{gap:6px;display:flex}.grid-cell{cursor:pointer;background:#fff;border:1px solid #ddd;border-radius:8px;justify-content:center;align-items:center;width:52px;height:52px;font-size:.9rem;transition:background .1s;display:flex}.grid-cell:hover{background:#f5f5f5}.grid-cell:focus{outline-offset:2px;outline:2px solid #4f7dff}.grid-cell.selected{background:#e8f0ff;border-color:#4f7dff;font-weight:600}.status-bar{color:#555;background:#f9f9f9;border:1px solid #eee;border-radius:8px;margin-top:1.5rem;padding:10px 14px;font-size:.85rem}@keyframes slideDown{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.dropdown{animation:.18s slideDown}@keyframes slideUp{0%{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(-8px)}}.dropdown.closing{animation:.15s forwards slideUp}@media (prefers-color-scheme:dark){.app{color:#e0e0e0;background:#242424;box-shadow:0 4px 24px #0006}.hint{color:#aaa}.menu-trigger{color:#e0e0e0;background:#2e2e2e;border-color:#444}.menu-trigger:hover,.menu-trigger.open{background:#3a3a3a}.dropdown{background:#2e2e2e;border-color:#444;box-shadow:0 8px 24px #0006}.menu-item{color:#e0e0e0}.menu-item:hover,.menu-item:focus{background:#3a3a3a}.menu-item-shortcut{color:#777}.grid-cell{color:#e0e0e0;background:#2e2e2e;border-color:#444}.grid-cell:hover{background:#3a3a3a}.grid-cell.selected{color:#a8c4ff;background:#1e3a6e;border-color:#4f7dff}.status-bar{color:#aaa;background:#2e2e2e;border-color:#444}}