*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--bg:#0f0f13;--surface:#18181f;--surface2:#21212c;--border:#2e2e3d;--text:#e8e8f0;--text-muted:#7a7a9a;--accent:#6c63ff;--accent-glow:#6c63ff59;--font-mono:"JetBrains Mono", "Fira Code", "Cascadia Code", ui-monospace, monospace;--font-sans:"Inter", system-ui, sans-serif;--radius:10px;--radius-sm:6px;--panel-w:300px}html,body{background:var(--bg);height:100%;color:var(--text);font-family:var(--font-sans);font-size:14px;line-height:1.5;overflow:hidden}#app{flex-direction:column;height:100dvh;display:flex}#header{background:var(--surface);border-bottom:1px solid var(--border);flex-shrink:0;justify-content:space-between;align-items:center;gap:16px;height:56px;padding:0 20px;display:flex}.header-left{align-items:baseline;gap:10px;display:flex}.brand{letter-spacing:-.3px;color:var(--text);font-size:18px;font-weight:700}.brand-sub{color:var(--text-muted);letter-spacing:.04em;font-size:12px}.header-stats{gap:24px;display:flex}.stat{flex-direction:column;align-items:flex-end;display:flex}.stat-label{text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);font-size:10px}.stat-value{font-family:var(--font-mono);color:var(--text);font-size:15px;font-weight:600}.status-value{font-family:var(--font-sans);font-size:13px}#main{flex:1;display:flex;overflow:hidden}#canvas-wrap{background:var(--bg);flex:1;position:relative;overflow:hidden}#canvas{width:100%;height:100%;display:block}#canvas-hint{color:var(--text-muted);pointer-events:none;opacity:.6;letter-spacing:.03em;white-space:nowrap;font-size:11px;position:absolute;bottom:14px;left:50%;transform:translate(-50%)}#panel{width:var(--panel-w);background:var(--surface);border-left:1px solid var(--border);scrollbar-width:thin;scrollbar-color:var(--border) transparent;flex-direction:column;flex-shrink:0;display:flex;overflow:hidden auto}#panel::-webkit-scrollbar{width:4px}#panel::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}.panel-section{border-bottom:1px solid var(--border);padding:16px}.section-title{text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);justify-content:space-between;align-items:center;margin-bottom:10px;font-size:11px;font-weight:600;display:flex}.btn{border-radius:var(--radius-sm);cursor:pointer;font-family:var(--font-sans);-webkit-user-select:none;user-select:none;border:1px solid #0000;justify-content:center;align-items:center;font-size:13px;font-weight:500;transition:background .12s,border-color .12s,box-shadow .12s,opacity .12s;display:inline-flex}.btn:disabled{opacity:.38;cursor:not-allowed}.btn:not(:disabled):active{transform:scale(.96)}.btn-primary{background:var(--surface2);border-color:var(--border);color:var(--text);padding:8px 14px}.btn-primary:not(:disabled):hover{background:#2a2a38;border-color:#444460}.btn-accent{background:var(--accent);border-color:var(--accent);color:#fff;box-shadow:0 0 0 0 var(--accent-glow);padding:8px 14px}.btn-accent:not(:disabled):hover{box-shadow:0 0 14px var(--accent-glow);background:#7b73ff}.btn-ghost{border-color:var(--border);color:var(--text-muted);background:0 0;padding:8px 14px}.btn-ghost:not(:disabled):hover{color:var(--text);background:var(--surface2)}.action-row{flex-wrap:wrap;gap:8px;display:flex}.action-row .btn{flex:1;min-width:70px}.speed-labels{text-transform:none;letter-spacing:normal;color:var(--text-muted);gap:8px;font-size:10px;font-weight:400;display:flex}.slider{appearance:none;background:var(--border);cursor:pointer;border-radius:2px;outline:none;width:100%;height:4px;margin-top:4px}.slider::-webkit-slider-thumb{-webkit-appearance:none;background:var(--accent);cursor:pointer;width:16px;height:16px;box-shadow:0 0 0 3px var(--accent-glow);border-radius:50%;transition:box-shadow .12s}.slider:hover::-webkit-slider-thumb{box-shadow:0 0 0 5px var(--accent-glow)}.slider::-moz-range-thumb{background:var(--accent);cursor:pointer;border:none;border-radius:50%;width:16px;height:16px}.moves-section{flex-shrink:0}.move-grid{grid-template-columns:repeat(3,1fr);gap:5px;display:grid}.btn-move{font-family:var(--font-mono);border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--surface2);color:var(--text);cursor:pointer;padding:7px 4px;font-size:12px;font-weight:600;transition:background .1s,border-color .1s,color .1s}.btn-move:not(:disabled):hover{border-color:var(--accent);color:#c8c4ff;background:#2a2a3a}.btn-move[data-face=U]{border-left:3px solid #d0d0d0}.btn-move[data-face=D]{border-left:3px solid #ffd600}.btn-move[data-face=R]{border-left:3px solid #e53935}.btn-move[data-face=L]{border-left:3px solid #ff8f00}.btn-move[data-face=F]{border-left:3px solid #43a047}.btn-move[data-face=B]{border-left:3px solid #1e88e5}.log-section{flex-direction:column;flex:1;min-height:0;display:flex}.move-log{font-family:var(--font-mono);color:var(--text-muted);scrollbar-width:thin;scrollbar-color:var(--border) transparent;min-height:60px;max-height:240px;font-size:12px;line-height:1.8;overflow-y:auto}.move-log::-webkit-scrollbar{width:4px}.move-log::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}.log-group-header{color:#44445a;letter-spacing:.05em;-webkit-user-select:none;user-select:none;padding:4px 0 2px;font-size:10px}.log-entry{color:var(--text-muted)}.log-entry:last-child{color:var(--text)}.log-label{color:#44445a;font-size:10px}@media (width<=700px){:root{--panel-w:100%}html,body{overflow:auto}#app{height:auto;min-height:100dvh}#main{flex-direction:column;height:auto}#canvas-wrap{height:50vw;min-height:260px;max-height:400px}#panel{border-left:none;border-top:1px solid var(--border);width:100%;max-height:none;overflow-y:visible}.header-stats{gap:14px}#header{padding:0 12px}}@media (width<=420px){.header-stats{gap:10px}.brand-sub{display:none}}