.left-sidebar{position:fixed;left:0;top:0;width:43px;height:100vh;display:flex;flex-direction:column;align-items:center;background-color:var(--surface);color:var(--text);border-right:1px solid var(--border);padding:10px 0;z-index:10;transition:transform 0.25s ease}.left-sidebar.collapsed{transform:translateX(-100%)}.sidebar-toggle{position:fixed;left:43px;top:16px;width:18px;height:32px;background:var(--surface);border:1px solid var(--border);border-left:none;border-radius:0 6px 6px 0;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--text-muted);z-index:11;transition:left 0.25s ease,background 0.15s ease,color 0.15s ease;top:50%;transform:translateY(-50%)}.sidebar-toggle:hover{background:var(--surface-2);color:var(--text)}.sidebar-toggle svg{width:12px;height:12px;transition:transform 0.25s ease}.sidebar-toggle.collapsed{left:0}.sidebar-toggle.collapsed svg{transform:rotate(180deg)}.top-icons,.bottom-icons{display:flex;flex-direction:column;cursor:pointer;color:var(--text-muted);gap:16px}.left-sidebar svg{width:30px;height:30px;padding:6px;border-radius:8px;transition:background 0.15s ease,color 0.15s ease}.left-sidebar svg:hover{background:var(--surface-2);color:var(--text)}.spacer{flex:1}.divider{width:60%;height:1px;background:var(--border);margin:16px 0}