.sidebar{position:fixed;top:var(--topbar-height);bottom:0;left:0;width:var(--sidebar-width);background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow-y:auto;z-index:30}.sidebar-header{padding:1.25rem 1.25rem 1rem;border-bottom:1px solid var(--border)}.sidebar-eyebrow{font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--text-faint);margin-bottom:.35rem}.sidebar-title{font-size:1.05rem;font-weight:600;color:var(--text)}.sidebar-nav{flex:1 1;padding:.75rem .5rem}.sidebar-section-label{display:flex;align-items:center;padding:.5rem .75rem;font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;color:var(--text-faint)}.sidebar-list{list-style:none;margin:0;padding:0}.sidebar-list li{margin:0}.sidebar-item{display:flex;flex-direction:column;gap:.15rem;padding:.55rem .75rem;margin:.1rem 0;border-radius:6px;border-left:2px solid transparent;color:var(--text-muted);font-size:.88rem;line-height:1.35;transition:background .12s ease,color .12s ease,border-color .12s ease}.sidebar-item:hover{background:var(--surface-2);color:var(--text);text-decoration:none}.sidebar-item-active{border-left-color:var(--accent)}.sidebar-item-active,.sidebar-item-active:hover{background:var(--selected-bg);color:var(--selected-fg)}.sidebar-item-title{font-weight:500;color:inherit}.sidebar-item-meta{font-size:.72rem;color:var(--text-faint);letter-spacing:.02em}.sidebar-item-active .sidebar-item-meta{color:rgba(216,230,251,.65)}.sidebar-footer{padding:.85rem 1.25rem;font-size:.72rem;color:var(--text-faint);border-top:1px solid var(--border)}@media (max-width:900px){.sidebar{position:static;width:100%;height:auto;border-right:none;border-bottom:1px solid var(--border)}}