.chevron-arrow{display:inline-block;font-size:.6rem;margin-right:.5rem;transition:transform var(--transition);color:var(--text-muted)}.sidebar-nav-group.expanded .chevron-arrow{transform:rotate(90deg)!important;color:var(--neon-cyan)}.sidebar-nav-group{border-bottom:1px solid var(--border-dim);display:block;width:100%}.sidebar-nav-group:last-child{border-bottom:none}.sidebar-nav-group .sidebar-nav-item{border-bottom:none!important}.sidebar-sub-items{list-style:none!important;padding:.25rem 0 .5rem!important;margin:0!important;background:#00000026!important;border-top:1px solid rgba(42,42,85,.2)!important;width:100%}.sidebar-sub-item{display:flex!important;align-items:center!important;padding:.4rem 1rem .4rem 2.4rem!important;font-family:var(--font-mono)!important;font-size:.72rem!important;color:var(--text-secondary)!important;transition:all var(--transition)!important;border-left:3px solid transparent!important;text-decoration:none!important;cursor:pointer!important;width:100%!important;box-sizing:border-box!important}.sidebar-sub-item .conector{font-family:var(--font-mono)!important;color:var(--text-muted)!important;margin-right:6px!important;flex-shrink:0!important}.sub-item-dot{width:6px!important;height:6px!important;border-radius:50%!important;display:inline-block!important;margin-right:8px!important;flex-shrink:0!important}.sub-item-dot.dot-beginner{background-color:var(--neon-green)!important;box-shadow:var(--glow-green)!important}.sub-item-dot.dot-intermediate{background-color:var(--neon-yellow)!important;box-shadow:var(--glow-yellow)!important}.sub-item-dot.dot-advanced{background-color:var(--neon-pink)!important;box-shadow:var(--glow-pink)!important}.sub-item-title{white-space:nowrap!important;overflow:hidden!important;text-overflow:ellipsis!important;flex:1!important;text-align:left!important;color:inherit!important}.sidebar-sub-item:hover,.sidebar-sub-item.active{color:var(--neon-cyan)!important;background:#00ffff0d!important;border-left-color:var(--neon-cyan)!important;padding-left:2.6rem!important}.sidebar-sub-item.active{background:#00ffff14!important;font-weight:600!important}@keyframes card-glow-pulse{0%{outline:2px solid var(--neon-cyan);box-shadow:0 0 15px var(--neon-cyan),var(--glow-cyan);transform:scale(1.02)}50%{outline:2px solid var(--neon-cyan);box-shadow:0 0 25px var(--neon-cyan),var(--glow-cyan);transform:scale(1.025)}to{outline:2px solid transparent;box-shadow:none;transform:scale(1)}}.article-card.highlighted{animation:card-glow-pulse 1.8s ease-out!important;z-index:10!important}.filter-controls-container{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.25rem;flex-wrap:wrap;gap:1rem}.filter-controls-container .level-filter{margin-bottom:0}.layout-toggle{display:flex;background:var(--bg-secondary);border:1px solid var(--border-strong);border-radius:var(--radius);padding:2px}.layout-btn{background:transparent;border:none;color:var(--text-secondary);padding:.4rem .6rem;cursor:pointer;border-radius:calc(var(--radius) - 1px);display:flex;align-items:center;justify-content:center;transition:all var(--transition)}.layout-btn:hover{color:var(--neon-cyan)}.layout-btn.active{background:#00ffff26;color:var(--neon-cyan);box-shadow:0 0 8px #00ffff1a}.articles-grid{transition:all .3s ease-in-out}.article-card{transition:all .25s cubic-bezier(.16,1,.3,1)}.articles-grid.list-view{grid-template-columns:1fr!important;gap:1rem}.articles-grid.list-view .article-card{display:flex;flex-direction:row!important;align-items:center!important;justify-content:space-between!important;gap:1.5rem!important;padding:1.25rem 1.5rem!important;min-height:100px}.articles-grid.list-view .article-card-top{display:flex!important;flex-direction:column!important;align-items:flex-start!important;gap:.4rem!important;width:150px!important;flex-shrink:0!important}.articles-grid.list-view .article-card-top .level-badge{margin-left:0!important}.articles-grid.list-view .article-card-title{flex:1!important;font-size:1.05rem!important;margin:0!important}.articles-grid.list-view .article-card-desc{display:none!important}.articles-grid.list-view .article-card-footer{display:flex!important;flex-direction:column!important;align-items:flex-end!important;gap:.4rem!important;border-top:none!important;padding-top:0!important;width:120px!important;flex-shrink:0!important;font-family:var(--font-mono);font-size:.72rem}.articles-grid.list-view .article-card-footer .views{margin-left:0!important}@media (max-width: 768px){.articles-grid.list-view .article-card{flex-direction:column!important;align-items:flex-start!important;gap:1rem!important;min-height:auto!important}.articles-grid.list-view .article-card-top{width:100%!important;flex-direction:row!important;align-items:center!important}.articles-grid.list-view .article-card-top .level-badge{margin-left:auto!important}.articles-grid.list-view .article-card-footer{width:100%!important;flex-direction:row!important;justify-content:space-between!important;border-top:1px solid var(--border-dim)!important;padding-top:.75rem!important;align-items:center!important}}.article-card.hidden{display:none!important}.pagination-container{display:flex;flex-direction:column;align-items:center;justify-content:center;margin:3rem 0 1.5rem;gap:.75rem;width:100%}.pagination-btn{display:inline-flex;align-items:center;gap:.5rem;background:#0006;border:1px solid var(--neon-cyan);border-radius:var(--radius);padding:.75rem 1.75rem;color:var(--neon-cyan);font-family:var(--font-mono);font-size:.85rem;font-weight:600;cursor:pointer;transition:all var(--transition);box-shadow:0 0 12px #00ffff1a}.pagination-btn:hover:not(:disabled){background:#00ffff14;box-shadow:0 0 18px #00ffff40,var(--glow-cyan);transform:translateY(-2px)}.pagination-btn:active:not(:disabled){transform:translateY(0)}.pagination-btn:disabled{border-color:var(--border-strong);color:var(--text-muted);cursor:default;box-shadow:none;background:#2a2a551a}.pagination-btn .btn-icon-loaded{color:var(--neon-green);text-shadow:var(--glow-green)}.pagination-status{font-family:var(--font-mono);font-size:.75rem;color:var(--text-muted);text-align:center}