:root{--bg-primary: #0a0a0f;--bg-secondary: #12121a;--bg-tertiary: #1a1a25;--bg-card: #1e1e2a;--bg-hover: #252535;--text-primary: #ffffff;--text-secondary: #a0a0b0;--text-muted: #606070;--accent-primary: #6366f1;--accent-secondary: #818cf8;--accent-tertiary: #a5b4fc;--success: #10b981;--warning: #f59e0b;--error: #ef4444;--border: #2a2a3a;--border-light: #3a3a4a;--gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);--gradient-glow: radial-gradient(circle at center, rgba(99, 102, 241, .15) 0%, transparent 70%);--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .5);--shadow-glow: 0 0 30px rgba(99, 102, 241, .3);--transition-fast: .15s ease;--transition-normal: .25s ease;--sidebar-width: 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var(--space-sm);background:var(--accent-primary);color:#fff;border-radius:var(--radius-sm);text-transform:uppercase}.doc-title{flex:1;font-size:.875rem;color:var(--text-primary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.doc-date{font-size:.75rem;color:var(--text-muted)}.empty-list{text-align:center;color:var(--text-muted);padding:var(--space-lg)}.loading-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-2xl);gap:var(--space-md);color:var(--text-muted)}.spinner{width:32px;height:32px;border:3px solid var(--border);border-top-color:var(--accent-primary);border-radius:50%;animation:spin 1s linear infinite}.loading{opacity:.6;animation:pulse 1.5s infinite}@keyframes pulse{0%,to{opacity:.6}50%{opacity:.3}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--border-light);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.mobile-header{display:none;position:fixed;top:0;left:0;right:0;height:56px;background:var(--bg-secondary);border-bottom:1px solid var(--border);z-index:999;align-items:center;padding:0 var(--space-md);gap:var(--space-md)}.mobile-logo{font-size:1.25rem;font-weight:700;color:var(--text-primary)}.hamburger{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;padding:10px;background:transparent;border:none;cursor:pointer;z-index:1001}.hamburger-line{display:block;width:24px;height:2px;background:var(--text-primary);border-radius:2px;transition:all .3s ease}.hamburger-line.open:nth-child(1){transform:rotate(45deg) translate(5px,5px)}.hamburger-line.open:nth-child(2){opacity:0}.hamburger-line.open:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}.mobile-overlay{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;z-index:998;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.action-panel-toggle{display:none;width:44px;height:44px;background:transparent;border:none;cursor:pointer;align-items:center;justify-content:center;margin-left:auto}.action-dots{font-size:1.5rem;color:var(--text-primary);font-weight:700}.action-panel-overlay{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:997;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.action-panel{display:none;position:fixed;top:56px;right:-280px;width:280px;height:calc(100vh - 56px);background:var(--bg-secondary);border-left:1px solid var(--border);z-index:1000;transition:right .3s ease;flex-direction:column}.action-panel.open{right:0}.action-panel-header{display:flex;justify-content:space-between;align-items:center;padding:var(--space-md);border-bottom:1px solid var(--border)}.action-panel-header h3{font-size:.875rem;font-weight:600;color:var(--text-secondary)}.action-panel-content{flex:1;padding:var(--space-md);overflow-y:auto}.action-panel-list{display:flex;flex-direction:column;gap:var(--space-sm)}.action-panel-btn{display:flex;align-items:center;gap:var(--space-sm);width:100%;padding:var(--space-md);background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);font-size:.875rem;cursor:pointer;transition:all var(--transition-fast);text-align:left}.action-panel-btn:hover{background:var(--accent-primary);border-color:var(--accent-primary);color:#fff}@media (max-width: 768px){.mobile-header,.hamburger{display:flex}.mobile-overlay{display:block}.action-panel-toggle{display:flex}.action-panel-overlay{display:block}.action-panel{display:flex}.action-panel.open{right:0}.app{flex-direction:column}.sidebar{position:fixed;top:0;left:-280px;width:280px;height:100vh;z-index:1000;transition:left .3s ease;padding-top:var(--space-lg)}.sidebar.open{left:0}.logo h1,.nav-btn span,.workspace-selector{display:flex}.nav-btn{justify-content:flex-start;padding:var(--space-md)}.main{margin-left:0;width:100%;padding-top:56px;min-height:calc(100vh - 56px)}.stats-grid{grid-template-columns:repeat(2,1fr)}.charts-row{grid-template-columns:1fr}.time-range-selector{flex-wrap:wrap}.time-btn{flex:1;min-width:50px;text-align:center}.view-header .time-range-selector{width:100%;margin-top:var(--space-sm)}.chat-layout{flex-direction:column}.chat-sidebar{position:fixed;top:56px;left:-280px;width:280px;height:calc(100vh - 56px);z-index:900;transition:left .3s ease}.chat-sidebar.open{left:0}.chat-main{width:100%;height:calc(100vh - 56px)}.nav-btn,.workspace-btn,.btn{min-height:44px}.form-control,.form-select,.form-input{min-height:44px;font-size:16px}.card,.upload-zone{margin:var(--space-sm)}.knowledge-header{flex-direction:column;gap:var(--space-sm);padding:var(--space-md)}.knowledge-header h1{font-size:1.25rem}.knowledge-stats{flex-wrap:wrap;justify-content:center;gap:var(--space-xs)}.export-buttons{width:100%;justify-content:center}.auth-card{margin:var(--space-md);padding:var(--space-lg)}.chat-view{flex-direction:column;height:calc(100vh - 56px)}.chat-sidebar,.chat-sidebar:not(.open){display:none!important;position:fixed;top:56px;left:0;width:280px!important;height:calc(100vh - 56px);z-index:899;opacity:1!important;overflow:visible!important}.chat-sidebar.open{display:flex!important;flex-direction:column}.chat-main{width:100%!important;flex:1}.chat-sidebar-overlay{display:block}.chat-sidebar-close{display:flex;align-items:center;justify-content:center;width:32px;height:32px;padding:0;font-size:1.25rem}.chat-messages,.chat-input-container{padding:var(--space-sm)}.chat-input-row{gap:var(--space-xs)}.chat-input-row input{font-size:16px;min-height:44px}.chat-main .view-header .btn-icon{background:var(--accent-primary);color:#fff;border-radius:var(--radius-md);width:44px;height:44px}.chat-main .view-header .btn-icon:hover{background:var(--accent-secondary)}.chat-main .view-header{padding:var(--space-sm) var(--space-md)}.chat-main .view-header h2{font-size:1rem;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.documents-header{flex-direction:column;gap:var(--space-sm);align-items:stretch}.documents-controls{flex-direction:column;gap:var(--space-sm)}.documents-search{width:100%}.documents-actions{flex-direction:column;gap:var(--space-sm);width:100%}.documents-actions button{width:100%;justify-content:center}.agents-header{flex-direction:column;gap:var(--space-sm);align-items:stretch}.agents-header h1{font-size:1.25rem}.agents-header button{width:100%;justify-content:center}.agents-grid{grid-template-columns:1fr}.admin-stats{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-sm)}.admin-stats .stat-card:nth-child(3){grid-column:1 / -1}.admin-card{margin:var(--space-sm);padding:var(--space-md)}.admin-card h2{font-size:1rem}.admin-table-container{overflow-x:auto;-webkit-overflow-scrolling:touch}.admin-table{min-width:600px}.maintenance-section{flex-direction:column;gap:var(--space-md)}.maintenance-card{padding:var(--space-md)}.maintenance-card button{width:100%}.view-header{flex-direction:column;align-items:flex-start;gap:var(--space-sm)}.view-header h2{font-size:1.25rem}.header-left{flex-direction:column;align-items:flex-start;gap:var(--space-sm);width:100%}.header-stats{flex-wrap:wrap;gap:var(--space-xs)}.view-actions{width:100%;flex-wrap:wrap;gap:var(--space-xs)}.view-actions .btn{flex:1;min-width:120px;justify-content:center;padding:var(--space-sm);font-size:.75rem}.node-details{position:fixed;top:auto;bottom:0;left:0;right:0;width:100%;max-height:50vh;overflow-y:auto;border-radius:var(--radius-lg) var(--radius-lg) 0 0}.graph-container{margin-bottom:var(--space-2xl)}.view{padding:var(--space-md)}}.auth-container{display:flex;align-items:center;justify-content:center;min-height:100vh;background:var(--bg-primary);background-image:var(--gradient-glow);background-repeat:no-repeat;background-position:center top}.auth-card{width:100%;max-width:400px;padding:var(--space-2xl);background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg)}.auth-header{text-align:center;margin-bottom:var(--space-xl)}.auth-header h1{font-size:2rem;margin-bottom:var(--space-xs);background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.auth-header p{color:var(--text-muted)}.auth-error{background:#ef44441a;color:var(--error);padding:var(--space-sm) var(--space-md);border-radius:var(--radius-md);margin-bottom:var(--space-md);font-size:.875rem;text-align:center}.auth-footer{margin-top:var(--space-xl);text-align:center;font-size:.875rem;color:var(--text-secondary)}.auth-footer a{color:var(--accent-secondary);text-decoration:none;font-weight:500}.auth-footer a:hover{text-decoration:underline}.w-full{width:100%}.document-list{margin-top:var(--space-xl)}.document-list h3{margin-bottom:var(--space-md);font-size:1.125rem;font-weight:600}.documents-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--space-md)}.document-card{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-md);padding:var(--space-md);transition:border-color .2s}.document-card:hover{border-color:var(--accent-primary)}.document-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-sm)}.document-type{font-size:.75rem;text-transform:uppercase;color:var(--accent-secondary);font-weight:600}.document-title{font-size:1rem;margin-bottom:var(--space-xs);color:var(--text-primary)}.document-source{font-size:.75rem;color:var(--text-muted);margin-bottom:var(--space-sm)}.document-meta{display:flex;justify-content:space-between;font-size:.75rem;color:var(--text-secondary);margin-bottom:var(--space-sm)}.document-keywords{display:flex;flex-wrap:wrap;gap:var(--space-xs)}.keyword-tag{font-size:.625rem;padding:2px 6px;background:var(--bg-primary);border-radius:var(--radius-sm);color:var(--text-secondary)}.btn-icon{background:transparent;border:none;cursor:pointer;padding:4px;font-size:.875rem;opacity:.6;transition:opacity .2s}.btn-icon:hover{opacity:1}.empty-state{text-align:center;padding:var(--space-2xl);color:var(--text-muted)}.toast-container{position:fixed;top:var(--space-xl);right:var(--space-xl);z-index:9999;display:flex;flex-direction:column;gap:var(--space-sm);max-width:400px}.toast{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-md) var(--space-lg);background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);animation:slideIn .3s ease-out}@keyframes slideIn{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}.toast-success{border-left:4px solid var(--success)}.toast-error{border-left:4px solid var(--error)}.toast-warning{border-left:4px solid #f59e0b}.toast-info{border-left:4px solid var(--accent-primary)}.toast-icon{font-size:1.125rem}.toast-success .toast-icon{color:var(--success)}.toast-error .toast-icon{color:var(--error)}.toast-warning .toast-icon{color:#f59e0b}.toast-info .toast-icon{color:var(--accent-primary)}.toast-message{flex:1;color:var(--text-primary);font-size:.875rem}.toast-close{background:none;border:none;color:var(--text-muted);font-size:1.25rem;cursor:pointer;padding:0;line-height:1;transition:color .2s}.toast-close:hover{color:var(--text-primary)}.loading-spinner{display:inline-block;width:20px;height:20px;border:2px solid var(--border);border-radius:50%;border-top-color:var(--accent-primary);animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;border-radius:inherit}.loading-text{display:flex;align-items:center;gap:var(--space-sm);color:var(--text-secondary)}.profile-container{max-width:600px;display:flex;flex-direction:column;gap:var(--space-2xl)}.profile-section{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-xl)}.profile-section h3{margin:0 0 var(--space-lg);font-size:1.125rem;font-weight:600;color:var(--text-primary)}.form-group{margin-bottom:var(--space-lg)}.form-group label{display:block;margin-bottom:var(--space-xs);font-size:.875rem;font-weight:500;color:var(--text-secondary)}.form-group input{width:100%;padding:var(--space-sm) var(--space-md);background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);font-size:.875rem;transition:border-color .2s,box-shadow .2s}.form-group input:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 0 3px #6366f11a}.form-group input.input-disabled{opacity:.6;cursor:not-allowed}.input-help{display:block;margin-top:var(--space-xs);font-size:.75rem;color:var(--text-muted)}.input-help a{color:var(--accent-primary);text-decoration:none}.input-help a:hover{text-decoration:underline}.credits-info{display:flex;flex-wrap:wrap;gap:var(--space-lg);margin-bottom:var(--space-lg);padding:var(--space-md);background:var(--bg-tertiary);border-radius:var(--radius-md)}.credits-display,.api-mode{display:flex;align-items:center;gap:var(--space-sm)}.credits-label,.mode-label{color:var(--text-secondary);font-size:.875rem}.credits-value{font-size:1.5rem;font-weight:700;color:var(--accent-primary)}.mode-badge{padding:var(--space-xs) var(--space-sm);border-radius:var(--radius-full);font-size:.75rem;font-weight:600}.mode-badge.credits{background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff}.mode-badge.unlimited{background:linear-gradient(135deg,#10b981,#059669);color:#fff}.api-key-status{display:flex;flex-direction:column;gap:var(--space-md)}.success-message{color:var(--success);font-weight:500}.btn-danger{background:var(--error);color:#fff;border:none;padding:var(--space-sm) var(--space-md);border-radius:var(--radius-md);cursor:pointer;font-weight:500;transition:background .2s}.btn-danger:hover{background:#dc2626}.share-modal{width:500px;max-width:95vw}.share-invite-form{display:flex;gap:var(--space-sm);margin-bottom:var(--space-xl)}.share-invite-form input{flex:1;padding:var(--space-sm) var(--space-md);background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary)}.share-invite-form select{padding:var(--space-sm) var(--space-md);background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);min-width:100px}.share-members-list h4{margin:0 0 var(--space-md);font-size:.875rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em}.share-members-list ul{list-style:none;padding:0;margin:0}.member-item{display:flex;align-items:center;justify-content:space-between;gap:var(--space-md);padding:var(--space-md);background:var(--bg-tertiary);border-radius:var(--radius-md);margin-bottom:var(--space-sm)}.member-info{display:flex;align-items:center;gap:var(--space-sm)}.member-avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));display:flex;align-items:center;justify-content:center;font-size:.875rem;font-weight:600;color:#fff}.member-details{display:flex;flex-direction:column}.member-name{font-weight:500;color:var(--text-primary)}.member-email{font-size:.75rem;color:var(--text-muted)}.member-actions{display:flex;align-items:center;gap:var(--space-sm)}.member-actions select{padding:var(--space-xs) var(--space-sm);background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-secondary);font-size:.75rem}.btn-icon.danger{width:28px;height:28px;display:flex;align-items:center;justify-content:center;background:transparent;border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--error);cursor:pointer;font-size:1.25rem;transition:all .2s}.btn-icon.danger:hover{background:var(--error);border-color:var(--error);color:#fff}.no-members{text-align:center;color:var(--text-muted);padding:var(--space-xl)}.document-manager{display:flex;flex-direction:column;gap:var(--space-lg);height:100%}.document-manager .document-header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:var(--space-md)}.search-filter{display:flex;gap:var(--space-sm);flex:1;max-width:500px}.search-input{flex:1;padding:var(--space-sm) var(--space-md);background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);font-size:.875rem}.search-input:focus{outline:none;border-color:var(--accent-primary)}.type-filter{padding:var(--space-sm) var(--space-md);background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-secondary);font-size:.875rem;cursor:pointer}.header-actions{display:flex;gap:var(--space-sm)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000}.modal{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:var(--space-xl);min-width:400px;max-width:90vw}.modal h3{margin-bottom:var(--space-lg);color:var(--text-primary)}.url-input{width:100%;padding:var(--space-sm) var(--space-md);background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);font-size:.875rem;margin-bottom:var(--space-lg)}.url-input:focus{outline:none;border-color:var(--accent-primary)}.modal-actions{display:flex;justify-content:flex-end;gap:var(--space-sm)}.upload-progress-container{display:flex;flex-direction:column;gap:var(--space-sm);padding:var(--space-md);background:var(--bg-card);border-radius:var(--radius-md);border:1px solid var(--border);margin-bottom:var(--space-md)}.upload-counter{font-size:.875rem;color:var(--text-secondary);padding-bottom:var(--space-sm);border-bottom:1px solid var(--border)}.upload-progress-item{display:flex;flex-direction:column;gap:var(--space-xs);padding:var(--space-sm);background:var(--bg-tertiary);border-radius:var(--radius-sm)}.upload-progress-item.complete{background:#4ade801a;border:1px solid rgba(74,222,128,.3)}.upload-progress-item.error{background:#f871711a;border:1px solid rgba(248,113,113,.3)}.progress-header{display:flex;justify-content:space-between;align-items:center}.progress-title{display:flex;flex-direction:column;gap:2px}.progress-filename{font-size:.875rem;font-weight:500;color:var(--text-primary)}.progress-stage-label{font-size:.75rem;color:var(--text-secondary)}.progress-percent{font-size:.75rem;color:var(--accent);font-weight:600}.progress-bar{height:6px;background:var(--bg-secondary);border-radius:var(--radius-full);overflow:hidden}.progress-fill{height:100%;background:var(--gradient-primary);transition:width .3s ease}.progress-detail{font-size:.75rem;color:var(--text-tertiary)}.progress-error{font-size:.75rem;color:var(--error)}.btn-small{padding:var(--space-xs) var(--space-sm);font-size:.75rem}.drop-zone{flex:1;border:2px dashed var(--border);border-radius:var(--radius-lg);padding:var(--space-lg);min-height:300px;transition:all var(--transition-normal);overflow-y:auto}.drop-zone.dragging{border-color:var(--accent-primary);background:#6366f11a}.drop-zone .empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--text-secondary)}.drop-zone .empty-state p{font-size:1.1rem;margin-bottom:var(--space-sm)}.drop-zone .hint{font-size:.875rem;color:var(--text-muted)}.drop-hint-banner{display:flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-md) var(--space-lg);background:linear-gradient(135deg,#6366f11a,#8b5cf60d);border:1px dashed var(--accent-primary);border-radius:var(--radius-md);margin-bottom:var(--space-lg);color:var(--accent-secondary);font-size:.9rem;transition:all var(--transition-normal)}.drop-hint-banner svg{opacity:.8}.drop-zone.dragging 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