.add-canvas-bar{z-index:2;border-top:1px solid var(--border,#0f172a1f);background:var(--panel,#fff);flex:none;gap:6px;padding:10px 12px 12px;display:grid;position:sticky;bottom:0}.add-canvas-btn{gap:8px;height:36px;font-size:13px}.add-canvas-btn svg{width:16px;height:16px}.add-canvas-hint{color:var(--muted,#6b7280);text-align:center;margin:0;font-size:11.5px;line-height:1.35}