:root{--bg: #f8fafc;--surface: #ffffff;--surface-elevated: #f8fafc;--surface-hover: #f1f5f9;--border: #e2e8f0;--border-strong: #cbd5e1;--border-focus: #94a3b8;--text-primary: #0f172a;--text-secondary: #334155;--text-muted: #64748b;--text-subtle: #94a3b8;--text-inverse: #ffffff;--accent: #2563eb;--accent-hover: #1d4ed8;--accent-soft: #eff6ff;--accent-soft-hover: #dbeafe;--success: #059669;--success-soft: #ecfdf5;--success-soft-hover: #d1fae5;--warning: #d97706;--warning-soft: #fffbeb;--warning-soft-hover: #fef3c7;--danger: #dc2626;--danger-soft: #fef2f2;--danger-soft-hover: #fee2e2;--bubble-out-bg: #0f172a;--bubble-out-text: #ffffff;--bubble-out-time: rgba(255,255,255,.65);--bubble-in-bg: #ffffff;--bubble-in-text: #0f172a;--bubble-in-border: #e2e8f0;--sidebar-bg: #0f172a;--sidebar-bg-elevated: #1e293b;--sidebar-border: #1e293b;--sidebar-text: #94a3b8;--sidebar-text-strong: #e2e8f0;--sidebar-text-subtle: #64748b;--sidebar-hover: #1e293b;--sidebar-active: #1e293b;--sidebar-active-border: #475569;--sp-1: 4px;--sp-2: 8px;--sp-3: 12px;--sp-4: 16px;--sp-5: 20px;--sp-6: 24px;--sp-8: 32px;--r-sm: 4px;--r-md: 8px;--r-lg: 12px;--r-xl: 16px;--r-full: 9999px;--sh-sm: 0 1px 2px rgba(15, 23, 42, .04);--sh-md: 0 4px 8px -2px rgba(15, 23, 42, .06), 0 2px 4px -2px rgba(15, 23, 42, .04);--sh-lg: 0 12px 24px -4px rgba(15, 23, 42, .08), 0 4px 8px -4px rgba(15, 23, 42, .05);--transition-fast: .12s ease;--transition-base: .16s ease;--font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: ui-monospace, "SF Mono", "Monaco", "Inconsolata", monospace;--z-dropdown: 100;--z-modal: 500;--z-toast: 600}[data-theme=dark]{--bg: #0b1020;--surface: #111827;--surface-elevated: #1f2937;--surface-hover: #1f2937;--border: #1f2937;--border-strong: #374151;--border-focus: #4b5563;--text-primary: #f1f5f9;--text-secondary: #cbd5e1;--text-muted: #94a3b8;--text-subtle: #6b7280;--text-inverse: #0f172a;--accent: #3b82f6;--accent-hover: #2563eb;--accent-soft: #1e3a5f;--accent-soft-hover: #1e40af;--success: #34d399;--success-soft: #064e3b;--success-soft-hover: #065f46;--warning: #fbbf24;--warning-soft: #422006;--warning-soft-hover: #78350f;--danger: #f87171;--danger-soft: #450a0a;--danger-soft-hover: #7f1d1d;--sidebar-bg: #081020;--sidebar-bg-elevated: #0f172a;--sidebar-border: #1e293b;--sidebar-text: #64748b;--sidebar-text-strong: #cbd5e1;--sidebar-text-subtle: #475569;--sidebar-hover: #111827;--sidebar-active: #111827;--sidebar-active-border: #475569;--bubble-out-bg: #0f172a;--bubble-out-text: #ffffff;--bubble-out-time: rgba(255,255,255,.65);--bubble-in-bg: #1f2937;--bubble-in-text: #f1f5f9;--bubble-in-border: #374151;--sh-sm: 0 1px 2px rgba(0, 0, 0, .3);--sh-md: 0 4px 8px -2px rgba(0, 0, 0, .4), 0 2px 4px -2px rgba(0, 0, 0, .3);--sh-lg: 0 12px 24px -4px rgba(0, 0, 0, .5), 0 4px 8px -4px rgba(0, 0, 0, .4)}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{font-family:var(--font);background:var(--bg);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:14px;line-height:1.55;letter-spacing:-.01em}button,input,textarea,select{font-family:inherit}:focus-visible{outline:none;box-shadow:0 0 0 2px var(--accent),0 0 0 4px var(--surface)}*{scrollbar-width:thin;scrollbar-color:var(--border-strong) transparent}*::-webkit-scrollbar{width:8px;height:8px}*::-webkit-scrollbar-track{background:transparent}*::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:4px;border:2px solid transparent;background-clip:content-box}*::-webkit-scrollbar-thumb:hover{background:var(--text-subtle)}*::-webkit-scrollbar-corner{background:transparent}.scrollbar-hide{scrollbar-width:none;-ms-overflow-style:none}.scrollbar-hide::-webkit-scrollbar{display:none}.app{display:flex;height:100vh;overflow:hidden}.sidebar{width:80px;min-width:80px;max-width:80px;background:var(--sidebar-bg);color:var(--sidebar-text);display:flex;flex-direction:column;border-right:1px solid var(--sidebar-border);flex-shrink:0;overflow-x:hidden;transition:width var(--transition-base),min-width var(--transition-base),max-width var(--transition-base)}.sidebar.expanded{width:280px;min-width:280px;max-width:280px}.sidebar-brand{display:flex;align-items:center;gap:var(--sp-3);padding:var(--sp-4) var(--sp-4) var(--sp-3);border-bottom:1px solid var(--sidebar-border);min-height:68px}.sidebar.collapsed .sidebar-brand{gap:4px;padding:12px 6px;justify-content:center}.sidebar-logo{width:36px;height:36px;border-radius:var(--r-md);background:linear-gradient(135deg,var(--accent) 0%,#334155 100%);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:15px;letter-spacing:-.02em;box-shadow:var(--sh-sm);flex-shrink:0}.sidebar.collapsed .sidebar-logo{width:32px;height:32px;font-size:14px}.sidebar-brand-text{display:none;flex-direction:column;line-height:1.2;min-width:0}.sidebar.expanded .sidebar-brand-text{display:flex}.sidebar-toggle{margin-left:auto;width:28px;height:28px;border:none;background:transparent;color:var(--sidebar-text);border-radius:var(--r-sm);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;transition:background var(--transition-fast),color var(--transition-fast),transform var(--transition-fast)}.sidebar-toggle:hover{background:var(--sidebar-hover);color:var(--sidebar-text-strong)}.sidebar.collapsed .sidebar-toggle{margin-left:0;width:22px;padding:0}.sidebar.collapsed .sidebar-toggle svg{transform:rotate(180deg)}.sidebar-brand-name{color:var(--sidebar-text-strong);font-weight:600;font-size:15px;letter-spacing:-.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.brand-input{background:transparent;border:none;color:var(--sidebar-text-strong);font-size:15px;font-weight:600;width:100%;outline:none;padding:0}.sidebar-brand-sub{color:var(--sidebar-text);font-size:11px;font-weight:400;opacity:.8;text-transform:uppercase;letter-spacing:.05em}.sidebar-nav{display:flex;flex-direction:column;gap:2px;padding:var(--sp-2) var(--sp-3)}.sidebar-nav-btn{display:flex;align-items:center;gap:var(--sp-3);width:100%;border:none;background:transparent;color:var(--sidebar-text);border-radius:var(--r-md);padding:10px 12px;cursor:pointer;font-size:13.5px;font-weight:500;text-align:left;transition:background var(--transition-fast),color var(--transition-fast);white-space:nowrap}.sidebar-nav-btn:hover{background:var(--sidebar-hover);color:var(--sidebar-text-strong)}.sidebar-nav-btn.active{background:var(--sidebar-active);color:var(--sidebar-text-strong)}.sidebar-nav-btn.active .sidebar-nav-icon{color:var(--sidebar-text-strong)}.sidebar-nav-icon{width:18px;height:18px;flex-shrink:0;color:var(--sidebar-text);transition:color var(--transition-fast)}.sidebar-label{display:none}.sidebar.expanded .sidebar-label{display:inline}.sidebar.collapsed .sidebar-nav-btn{justify-content:center;padding-left:0;padding-right:0}.sidebar-search{padding:var(--sp-2) var(--sp-3) var(--sp-3);border-bottom:1px solid var(--sidebar-border)}.sidebar-search-input{width:100%;background:var(--sidebar-bg-elevated);border:1px solid var(--sidebar-border);color:var(--sidebar-text-strong);border-radius:var(--r-md);padding:10px 12px 10px 36px;font-size:13px;outline:none;transition:border-color var(--transition-fast),box-shadow var(--transition-fast);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='M21 21l-4.35-4.35'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:10px center}.sidebar-search-input:focus{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-soft)}.sidebar-search-input::placeholder{color:var(--sidebar-text-subtle)}.sidebar-filter{padding:var(--sp-2) var(--sp-3);border-bottom:1px solid var(--sidebar-border);display:flex;flex-direction:column;gap:var(--sp-2)}.sidebar-filter-select{width:100%;background:var(--sidebar-bg-elevated);border:1px solid var(--sidebar-border);color:var(--sidebar-text-strong);border-radius:var(--r-md);padding:8px 32px 8px 12px;font-size:12.5px;outline:none;cursor:pointer;transition:border-color var(--transition-fast);-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center}.sidebar-filter-select:focus{border-color:var(--accent)}.sidebar-filter-select option{background:var(--sidebar-bg);color:var(--sidebar-text-strong)}.sidebar-chats{flex:1;overflow-y:auto;padding:var(--sp-2) var(--sp-2) var(--sp-4)}.sidebar-empty{padding:var(--sp-6) var(--sp-4);color:var(--sidebar-text);font-size:13px;line-height:1.6;text-align:center;opacity:.7}.chat-item{display:flex;align-items:center;gap:var(--sp-3);padding:10px 11px;border-radius:var(--r-md);cursor:pointer;transition:background var(--transition-fast);margin-bottom:2px;position:relative}.chat-item:hover{background:var(--sidebar-hover)}.chat-item.active{background:var(--sidebar-active)}.chat-item.unread{background:var(--sidebar-hover)}.chat-item.unread .chat-name{font-weight:600}.chat-avatar{width:38px;height:38px;border-radius:var(--r-full);background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:13px;letter-spacing:-.01em;flex-shrink:0;border:2px solid var(--sidebar-bg);box-shadow:0 0 0 1px var(--sidebar-border)}.chat-item.active .chat-avatar{background:var(--accent);color:#fff;border-color:var(--sidebar-active)}.chat-info{flex:1;min-width:0}.chat-name{color:var(--sidebar-text-strong);font-weight:500;font-size:13.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;letter-spacing:-.01em}.chat-preview{color:var(--sidebar-text);font-size:12px;opacity:.8;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:2px}.chat-meta-row{display:flex;flex-wrap:wrap;gap:4px;margin-top:4px}.badge{display:inline-flex;align-items:center;gap:4px;padding:2px 7px;border-radius:var(--r-full);font-size:10.5px;font-weight:500;line-height:1.3;white-space:nowrap}.badge-cat{background:var(--accent-soft);color:var(--accent);border:1px solid var(--border)}[data-theme=dark] .badge-cat{background:var(--accent-soft);color:var(--accent);border-color:var(--border)}.badge-cat-ticket{background:#eef2ff;color:#3730a3;border-color:#c7d2fe}[data-theme=dark] .badge-cat-ticket{background:#1e1b4b;color:#a5b4fc;border-color:#312e81}.badge-cat-problem{background:#fef2f2;color:#991b1b;border-color:#fecaca}[data-theme=dark] .badge-cat-problem{background:#450a0a;color:#fca5a5;border-color:#7f1d1d}.badge-cat-problem{background:#fef3c7;color:#92400e;border-color:#fde68a}[data-theme=dark] .badge-cat-problem{background:#422006;color:#fcd34d;border-color:#854d0e}.badge-cat-question{background:#f0fdf4;color:#166534;border-color:#bbf7d0}[data-theme=dark] .badge-cat-question{background:#052e16;color:#86efac;border-color:#166534}.badge-cat-general{background:#f1f5f9;color:#475569;border-color:#cbd5e1}[data-theme=dark] .badge-cat-general{background:#1e293b;color:#94a3b8;border-color:#334155}.badge-stale{background:var(--surface-hover);color:var(--text-muted);border:1px solid var(--border)}.badge-assignee{background:var(--accent-soft);color:var(--accent);border:1px solid var(--border)}.badge-admin{background:#fef3c7;color:#92400e;border-color:#fde68a}[data-theme=dark] .badge-admin{background:#422006;color:#fcd34d;border-color:#854d0e}.badge-system{background:#eef2ff;color:#3730a3;border-color:#c7d2fe}[data-theme=dark] .badge-system{background:#1e1b4b;color:#a5b4fc;border-color:#312e81}.unread-badge{display:inline-flex;align-items:center;justify-content:center;min-width:18px;height:18px;padding:0 6px;background:var(--accent);color:#fff;border-radius:var(--r-full);font-size:10.5px;font-weight:600;margin-left:8px;box-shadow:0 1px 3px #00000026}.channel-badge{display:inline-flex;align-items:center;gap:4px;padding:2px 7px;border-radius:var(--r-full);font-size:10.5px;font-weight:500;line-height:1.3;white-space:nowrap;background:var(--accent-soft);color:var(--accent);border:1px solid var(--border)}[data-theme=dark] .channel-badge{background:var(--accent-soft);color:var(--accent);border-color:var(--border)}.chat-panel{width:clamp(280px,25vw,360px);flex:0 0 clamp(280px,25vw,360px);min-width:280px;max-width:360px;min-height:0;background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden}.chat-panel-header{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--sp-3);padding:var(--sp-4) var(--sp-4) 14px;border-bottom:1px solid var(--border)}.chat-panel-title{color:var(--text-primary);font-size:16px;font-weight:600;letter-spacing:-.02em}.chat-panel-subtitle{margin-top:2px;color:var(--text-muted);font-size:11.5px}.chat-panel-count{min-width:26px;height:22px;padding:0 8px;border:1px solid var(--border);border-radius:var(--r-full);background:var(--surface-elevated);color:var(--text-muted);display:inline-flex;align-items:center;justify-content:center;font-size:11px;font-weight:600;flex-shrink:0}.chat-panel-error{margin:10px 14px 0}.chat-panel-search{padding:12px 14px 10px}.chat-panel-search-input{width:100%;background:var(--surface-elevated);border:1px solid var(--border);color:var(--text-primary);border-radius:var(--r-md);padding:9px 12px 9px 34px;font-size:13px;outline:none;transition:border-color var(--transition-fast),box-shadow var(--transition-fast),background var(--transition-fast);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='M21 21l-4.35-4.35'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:10px center}.chat-panel-search-input:focus{background-color:var(--surface);border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-soft)}.chat-panel-search-input::placeholder{color:var(--text-subtle)}.chat-panel-filter{display:flex;flex-wrap:wrap;gap:var(--sp-2);padding:0 14px 12px;border-bottom:1px solid var(--border)}.chat-panel-filter-select{flex:1 1 120px;min-width:0;background:var(--surface);border:1px solid var(--border);color:var(--text-secondary);border-radius:var(--r-md);padding:7px 28px 7px 10px;font-size:12px;outline:none;cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 8px center;transition:border-color var(--transition-fast)}.chat-panel-filter-select:focus{border-color:var(--accent)}.chat-panel-list{flex:1;overflow-y:auto;padding:var(--sp-2) 10px var(--sp-4)}.chat-panel-empty{padding:var(--sp-8) var(--sp-4);color:var(--text-muted);font-size:13px;line-height:1.6;text-align:center}.chat-panel .chat-item{gap:10px;padding:10px}.chat-panel .chat-item:hover{background:var(--surface-hover)}.chat-panel .chat-item.active{background:var(--accent-soft)}.chat-panel .chat-item.active:hover{background:var(--accent-soft-hover)}.chat-panel .chat-item.unread{background:var(--surface-elevated)}.chat-panel .chat-item.unread:hover{background:var(--surface-hover)}.chat-panel .chat-item.unread.active{background:var(--accent-soft)}.chat-panel .chat-item.unread.active:hover{background:var(--accent-soft-hover)}.chat-panel .chat-name{color:var(--text-primary)}.chat-panel .chat-item.unread .chat-name{font-weight:600}.chat-panel .chat-preview{color:var(--text-muted);opacity:1}.chat-panel .chat-avatar{background:var(--accent-soft);color:var(--accent);border-color:var(--surface);box-shadow:0 0 0 1px var(--border)}.chat-panel .chat-item.active .chat-avatar{background:var(--accent);color:#fff;border-color:var(--surface);box-shadow:0 0 0 1px var(--accent-soft)}.chat-time{color:var(--text-subtle);font-size:11px;line-height:1.4;display:flex;flex-direction:column;align-items:flex-end;gap:4px;white-space:nowrap;flex-shrink:0}.chat-time .unread-badge{margin-left:0}.sidebar-footer{padding:var(--sp-3) var(--sp-4);display:flex;flex-direction:column;gap:var(--sp-2);margin-top:auto;border-top:1px solid var(--sidebar-border)}.sidebar:not(.collapsed) .sidebar-footer{flex-direction:row;align-items:center;justify-content:space-between;gap:var(--sp-3)}.sidebar:not(.collapsed) .sidebar-user{flex:1 1 auto;min-width:0}.sidebar:not(.collapsed) .sidebar-footer-actions{width:auto;flex:0 0 auto}.sidebar.collapsed .sidebar-footer{padding:10px 6px;align-items:stretch}.sidebar-user{display:flex;align-items:center;gap:var(--sp-2);min-width:0}.sidebar.collapsed .sidebar-user{justify-content:center}.sidebar.collapsed .sidebar-user-name{display:none}.sidebar-user-avatar{width:32px;height:32px;border-radius:var(--r-full);background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:12px;flex-shrink:0;border:2px solid var(--sidebar-bg);box-shadow:0 0 0 1px var(--sidebar-border)}.sidebar-user-name{color:var(--sidebar-text-strong);font-size:13px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-logout{border:none;background:transparent;color:var(--sidebar-text);border-radius:var(--r-sm);padding:8px;cursor:pointer;font-size:12px;display:inline-flex;align-items:center;justify-content:center;gap:6px;transition:background var(--transition-fast),color var(--transition-fast)}.sidebar-logout:hover{background:var(--sidebar-hover);color:var(--sidebar-text-strong)}.sidebar-logout-text{white-space:nowrap}.sidebar.collapsed .sidebar-logout-text{display:none}.sidebar-hint{padding:var(--sp-4);color:var(--sidebar-text-subtle);font-size:12px;line-height:1.5}.main{flex:1;display:flex;flex-direction:column;min-width:0;background:var(--bg);overflow:hidden}.topbar{height:56px;background:var(--surface);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:var(--sp-4);padding:0 var(--sp-5);flex-shrink:0}.topbar-title{font-size:16px;font-weight:600;color:var(--text-primary);letter-spacing:-.02em}.topbar-sub{font-size:11.5px;color:var(--text-muted);margin-top:1px}.topbar-spacer{flex:1}.conversation{flex:1;display:flex;flex-direction:column;min-width:0;background:var(--bg)}.conv-header{padding:var(--sp-4) var(--sp-5);background:var(--surface);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:var(--sp-3);flex-shrink:0}.conv-avatar{width:42px;height:42px;border-radius:var(--r-full);background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:15px;flex-shrink:0;border:2px solid var(--surface);box-shadow:0 0 0 1px var(--border)}.conv-header-info{flex:1;min-width:0}.conv-name{font-weight:600;font-size:15px;color:var(--text-primary);letter-spacing:-.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv-meta{font-size:12px;color:var(--text-muted);margin-top:2px}.conv-actions{display:flex;gap:var(--sp-2)}.messages{flex:1;overflow-y:auto;padding:var(--sp-5) var(--sp-6);display:flex;flex-direction:column;gap:8px;background:var(--bg)}.messages::-webkit-scrollbar{width:6px}.messages::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:3px}.bubble{max-width:70%;padding:10px 14px;border-radius:16px;font-size:13.5px;line-height:1.5;background:var(--bubble-in-bg);color:var(--bubble-in-text);align-self:flex-start;box-shadow:var(--sh-sm);border:1px solid var(--bubble-in-border);word-wrap:break-word;animation:bubbleIn .15s ease-out}@keyframes bubbleIn{0%{opacity:0;transform:translateY(4px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}.bubble-text{white-space:pre-wrap;word-break:break-word}.bubble.in{border-bottom-left-radius:4px}.bubble.out{background:var(--bubble-out-bg);color:var(--bubble-out-text);border-color:var(--bubble-out-bg);align-self:flex-end;border-bottom-right-radius:4px;box-shadow:var(--sh-sm)}.bubble.out .time{color:var(--bubble-out-time)}.bubble.note{background:var(--warning-soft);border-color:var(--warning);color:var(--warning);opacity:.95}[data-theme=dark] 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