.mobile-topbar{display:none;align-items:center;justify-content:space-between;padding:10px 12px;border-bottom:1px solid var(--border);background:var(--bg);flex-shrink:0}.icon-btn{width:36px;height:36px;border:none;background:transparent;border-radius:8px;font-size:18px;color:var(--text);cursor:pointer;display:flex;align-items:center;justify-content:center}.icon-btn:hover{background:var(--border)}.mobile-topbar img{height:26px;width:auto}.topbar-spacer{width:36px;height:36px}.overlay{display:none;position:fixed;inset:0;background:#14141259;z-index:40}