.sidebar{width:220px;background:#222;color:#fff;padding:1.5rem}.logo{font-size:1.2rem;margin-bottom:2rem}.sidebar nav{display:flex;flex-direction:column;gap:1rem}.sidebar a{color:#aaa;text-decoration:none}.sidebar a.active{color:#fff;font-weight:700}.app-switcher{display:inline-flex;align-items:center;gap:.5rem;padding:.25rem .75rem;background:#f0f4ff;border:1px solid #d6def0;border-radius:999px;color:#0f172a;font-weight:600}.app-switcher-label{font-size:.9rem;text-transform:uppercase;letter-spacing:.04em;color:#475569}.app-switcher-select{border:none;background:transparent;font-weight:700;color:#0f172a;outline:none}.app-switcher-select:focus-visible{outline:2px solid #2563eb;border-radius:6px}.layout{display:flex;height:100vh}.layout-main{flex:1;display:flex;flex-direction:column;background:#f7f8fa}.topbar{display:flex;justify-content:flex-end;align-items:center;padding:1rem 2rem;background:#fff;border-bottom:1px solid #e5e7eb}.main-content{flex-grow:1;padding:2rem;overflow-y:auto}