:root{--spacing-1:4px;--spacing-2:8px;--spacing-3:12px;--spacing-4:16px;--spacing-5:20px;--spacing-6:24px;--spacing-7:28px;--spacing-8:32px;--spacing-9:36px;--spacing-10:40px;--spacing-12:48px;--spacing-16:64px}.gap-1{gap:var(--spacing-1)}.gap-2{gap:var(--spacing-2)}.gap-3{gap:var(--spacing-3)}.gap-4{gap:var(--spacing-4)}.gap-5{gap:var(--spacing-5)}.gap-6{gap:var(--spacing-6)}.gap-8{gap:var(--spacing-8)}.gap-10{gap:var(--spacing-10)}.p-1{padding:var(--spacing-1)}.p-2{padding:var(--spacing-2)}.p-3{padding:var(--spacing-3)}.p-4{padding:var(--spacing-4)}.p-6{padding:var(--spacing-6)}.p-8{padding:var(--spacing-8)}.m-1{margin:var(--spacing-1)}.m-2{margin:var(--spacing-2)}.m-3{margin:var(--spacing-3)}.m-4{margin:var(--spacing-4)}.m-6{margin:var(--spacing-6)}.m-8{margin:var(--spacing-8)}.mt-2{margin-top:var(--spacing-2)}.mt-4{margin-top:var(--spacing-4)}.mt-6{margin-top:var(--spacing-6)}.mb-2{margin-bottom:var(--spacing-2)}.mb-4{margin-bottom:var(--spacing-4)}.mb-6{margin-bottom:var(--spacing-6)}@keyframes bell-shake{0%,to{transform:rotate(0deg)}10%,30%,50%,70%,90%{transform:rotate(-10deg)}20%,40%,60%,80%{transform:rotate(10deg)}}.bell-shake{animation:bell-shake .5s ease-in-out}.topbarBellBadge{position:absolute;top:-4px;right:-4px;background:var(--danger);color:white;font-size:10px;font-weight:700;min-width:18px;height:18px;border-radius:9px;display:flex;align-items:center;justify-content:center;padding:0 4px;box-shadow:0 2px 4px rgba(0,0,0,.2)}.topbarBellPopover{position:absolute;top:100%;right:0;width:min(360px,92vw);max-height:520px;background:var(--panel);border:1px solid var(--stroke);border-radius:12px;box-shadow:var(--shadow);z-index:30010;display:flex;flex-direction:column;overflow:hidden}.topbarBellHead{display:flex;justify-content:space-between;align-items:center;padding:16px;border-bottom:1px solid var(--stroke);background:var(--bg-secondary)}.topbarBellUnreadCount{background:var(--primary);color:white;font-size:11px;font-weight:600;padding:2px 8px;border-radius:10px;margin-left:8px}.topbarBellActions{display:flex;gap:4px}.topbarBellActionBtn{background:transparent;border:1px solid var(--stroke);border-radius:6px;padding:6px 10px;font-size:12px;cursor:pointer;transition:all .2s}.topbarBellActionBtn:hover{background:var(--bg-secondary);border-color:var(--primary)}.topbarBellActionBtnSmall{padding:4px 8px;font-size:14px}.topbarBellFilters{display:flex;gap:4px;padding:8px 10px;border-bottom:1px solid var(--stroke);background:var(--bg);flex-wrap:nowrap;overflow:hidden}.topbarBellFilter{display:inline-flex;align-items:center;justify-content:center;gap:4px;width:28px;height:28px;padding:0;background:transparent;border:1px solid transparent;border-radius:8px;font-size:11px;cursor:pointer;transition:all .2s}.topbarBellFilter:hover{background:var(--bg-secondary)}.topbarBellFilter.is-active{background:var(--primary);color:white;border-color:var(--primary)}.filter-icon{font-size:16px;display:flex;align-items:center;justify-content:center}.filter-icon svg{width:16px;height:16px}.filter-label{font-size:10px;font-weight:600;line-height:1.1;text-align:center;display:none}.topbarBellList{flex:1 1;overflow-y:auto;max-height:380px;padding:8px}.topbarBellItem{display:flex;gap:12px;padding:12px;border-radius:8px;margin-bottom:8px;background:var(--bg);border:1px solid transparent;box-shadow:var(--shadow-soft);transition:all .2s;text-decoration:none;color:inherit;position:relative}.topbarBellItem:hover{border-color:var(--primary);background:var(--bg-secondary)}.topbarBellItem.is-unread{border-left:3px solid var(--primary);background:var(--bg-secondary)}.topbarBellItem.notification-success{border-left-color:var(--success)}.topbarBellItem.notification-success.is-unread{background:rgba(34,197,94,.05)}.topbarBellItem.notification-success .topbarBellItemTitle{color:var(--success)}.topbarBellItem.notification-error{border-left-color:var(--danger)}.topbarBellItem.notification-error.is-unread{background:rgba(239,68,68,.05)}.topbarBellItem.notification-error .topbarBellItemTitle{color:var(--danger)}.topbarBellItem.notification-warning{border-left-color:var(--warning)}.topbarBellItem.notification-warning.is-unread{background:rgba(245,158,11,.05)}.topbarBellItem.notification-warning .topbarBellItemTitle{color:var(--warning)}.topbarBellItem.notification-info{border-left-color:var(--primary)}.topbarBellItem.notification-info .topbarBellItemTitle{color:var(--primary)}.topbarBellItemIcon{font-size:20px;flex-shrink:0;width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:var(--bg-secondary);border-radius:50%}.topbarBellItemIcon svg{width:16px;height:16px;stroke:currentColor}.topbarBellItemContent{flex:1 1;min-width:0}.topbarBellItemTitle{font-size:13px;font-weight:600;margin-bottom:4px;display:flex;align-items:center;gap:6px;color:var(--text)}.topbarBellItemDuplicate{background:var(--primary);color:white;font-size:10px;font-weight:700;padding:1px 6px;border-radius:8px}.topbarBellItemMsg{font-size:12px;color:var(--muted);margin-bottom:6px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.topbarBellItemMeta{display:flex;align-items:center;gap:8px;font-size:11px;color:var(--text-faint)}.category-badge{background:var(--bg-secondary);padding:2px 6px;border-radius:4px;text-transform:capitalize;font-size:10px;font-weight:500}.topbarBellItemDot{width:8px;height:8px;background:var(--primary);border-radius:50%;position:absolute;top:12px;right:12px}.topbarBellEmpty{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 20px;text-align:center;color:var(--muted)}.empty-icon{font-size:48px;margin-bottom:16px;opacity:.5}.empty-text{font-size:13px;color:var(--muted)}.empty-state{flex-direction:column;padding:var(--spacing-12);text-align:center;color:var(--muted);background:var(--bg);border:2px dashed var(--stroke);border-radius:var(--radius-lg)}.empty-state,.empty-state-icon{display:flex;align-items:center;justify-content:center}.empty-state-icon{font-size:48px;margin-bottom:var(--spacing-6);opacity:.5;width:80px;height:80px;background:var(--bg-secondary);border-radius:50%}.empty-state-icon svg{width:40px;height:40px;stroke:var(--muted)}.empty-state-title{font-size:16px;font-weight:600;color:var(--text);margin-bottom:var(--spacing-2)}.empty-state-description{font-size:13px;color:var(--muted);margin-bottom:var(--spacing-6);max-width:400px}.empty-state-action{display:flex;gap:var(--spacing-3);flex-wrap:wrap}.loading-skeleton{background:linear-gradient(90deg,var(--bg) 0,var(--bg-secondary) 50%,var(--bg) 100%);background-size:200% 100%;animation:skeleton-loading 1.5s ease-in-out infinite;border-radius:var(--radius-md)}@keyframes skeleton-loading{0%{background-position:200% 0}to{background-position:-200% 0}}.loading-skeleton-text{height:16px;margin-bottom:var(--spacing-2)}.loading-skeleton-title{height:24px;margin-bottom:var(--spacing-4)}.loading-skeleton-circle{width:40px;height:40px;border-radius:50%}.loading-spinner{display:inline-block;width:20px;height:20px;border-radius:50%;border:3px solid var(--stroke);border-top-color:var(--primary);animation:spinner .8s linear infinite}@keyframes spinner{to{transform:rotate(1turn)}}.loading-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(255,255,255,.8);display:flex;align-items:center;justify-content:center;z-index:9999}.loading-overlay.dark{background:rgba(0,0,0,.7)}@media (max-width:768px){.topbarBellPopover{width:320px;right:-50px}.topbarBellFilters{grid-template-columns:repeat(2,1fr)}}