*{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary: #0a1929;--bg-secondary: #0f2744;--bg-tertiary: #163a5f;--bg-hover: #1e4976;--text-primary: #f1f5f9;--text-secondary: #cbd5e1;--text-muted: #94a3b8;--border-color: #1e4976;--accent: #00a693;--accent-hover: #00887a;--success: #00a693;--error: #ef4444;--user-bg: #004d84;--assistant-bg: #0f2744}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none;overscroll-behavior:none}#root{min-height:100vh}.loading-screen{display:flex;align-items:center;justify-content:center;height:100vh}.spinner{width:40px;height:40px;border:4px solid var(--border-color);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.auth-container{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:24px}.auth-card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;padding:48px;width:100%;max-width:440px}.auth-logo{display:block;max-width:200px;height:auto;margin:0 auto 24px}.auth-card h1{font-size:32px;margin-bottom:8px;text-align:center}.auth-subtitle{color:var(--text-secondary);text-align:center;margin-bottom:32px;font-size:15px}.auth-form{display:flex;flex-direction:column;gap:20px}.form-group{display:flex;flex-direction:column;gap:8px}.form-group label{font-size:14px;font-weight:500;color:var(--text-secondary)}.form-group input{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:8px;padding:12px 16px;font-size:15px;color:var(--text-primary);transition:border-color .2s}.form-group input:focus{outline:none;border-color:var(--accent)}.error-message{background:#ef44441a;border:1px solid var(--error);border-radius:8px;padding:12px;color:var(--error);font-size:14px}.auth-button{background:var(--accent);color:#fff;border:none;border-radius:8px;padding:12px 24px;font-size:15px;font-weight:500;cursor:pointer;transition:background .2s}.auth-button:hover:not(:disabled){background:var(--accent-hover)}.auth-button:disabled{opacity:.6;cursor:not-allowed}.toggle-auth{background:none;border:none;color:var(--accent);font-size:14px;cursor:pointer;margin-top:16px;transition:color .2s}.toggle-auth:hover{color:var(--accent-hover)}.app{display:flex;height:100vh;position:relative}.mobile-menu-toggle{display:none;position:fixed;top:16px;left:16px;z-index:200;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:8px;padding:8px;color:var(--text-primary);cursor:pointer;transition:transform .3s ease,opacity .3s ease}.mobile-menu-toggle.menu-visible{transform:translateY(0);opacity:1}.mobile-menu-toggle.menu-hidden{transform:translateY(-100px);opacity:0;pointer-events:none}.mobile-menu-toggle:hover{background:var(--bg-tertiary)}.sidebar{width:280px;background:var(--bg-secondary);border-right:1px solid var(--border-color);display:flex;flex-direction:column}.sidebar-header{padding:16px;border-bottom:1px solid var(--border-color)}.new-chat-button{width:100%;display:flex;align-items:center;justify-content:center;gap:8px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:8px;padding:12px;color:var(--text-primary);font-size:14px;font-weight:500;cursor:pointer;transition:all .2s}.new-chat-button:hover{background:var(--bg-hover)}.sidebar-nav{padding:16px;display:flex;flex-direction:column;gap:4px;border-bottom:1px solid var(--border-color)}.nav-item{display:flex;align-items:center;gap:12px;background:none;border:none;border-radius:8px;padding:12px;color:var(--text-secondary);font-size:14px;cursor:pointer;transition:all .2s;text-align:left}.nav-item:hover,.nav-item.active{background:var(--bg-tertiary);color:var(--text-primary)}.chat-history{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:4px}.history-item{display:flex;align-items:center;gap:4px;border-radius:8px;transition:all .2s;position:relative}.history-item:hover,.history-item.active{background:var(--bg-tertiary)}.history-button{flex:1;display:flex;align-items:center;gap:12px;background:none;border:none;padding:12px;color:var(--text-secondary);font-size:14px;cursor:pointer;text-align:left;transition:color .2s;min-width:0}.history-item.active .history-button,.history-item:hover .history-button{color:var(--text-primary)}.delete-chat-button{background:none;border:none;padding:8px;color:var(--text-muted);cursor:pointer;border-radius:6px;transition:all .2s;opacity:0;margin-right:4px}.history-item:hover .delete-chat-button{opacity:1}.delete-chat-button:hover{background:var(--error);color:#fff}.history-title{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sidebar-footer{padding:16px;border-top:1px solid var(--border-color)}.sign-out-button{width:100%;display:flex;align-items:center;justify-content:center;gap:8px;background:none;border:1px solid var(--border-color);border-radius:8px;padding:12px;color:var(--text-secondary);font-size:14px;cursor:pointer;transition:all .2s}.sign-out-button:hover{background:var(--bg-tertiary);color:var(--text-primary);border-color:var(--bg-hover)}.main-content,.chat-view{flex:1;display:flex;flex-direction:column;overflow:hidden}.messages-container{flex:1;overflow-y:auto;padding:24px}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;text-align:center;color:var(--text-secondary);gap:16px;padding:24px}.empty-state h2{font-size:28px;color:var(--text-primary);margin-top:16px}.empty-state p{font-size:16px;max-width:500px}.empty-state .hint{font-size:14px;color:var(--text-muted)}.messages{max-width:800px;margin:0 auto;width:100%;display:flex;flex-direction:column}.message{display:flex;gap:12px;margin-bottom:16px;animation:fadeIn .3s;max-width:80%}.message.user{align-self:flex-end;flex-direction:row-reverse}.message.assistant{align-self:flex-start}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message-icon{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0;color:#fff}.message.user .message-icon{background:var(--user-bg)}.message.assistant .message-icon{background:#fff;padding:4px;overflow:hidden}.message.assistant .message-icon img{width:100%;height:100%;object-fit:cover}.message-content{flex:1;min-width:0}.message.user .message-content{background:var(--user-bg);padding:12px 16px;border-radius:16px 4px 16px 16px;color:var(--text-primary);font-size:15px;line-height:1.7}.message.assistant .message-content{background:var(--bg-secondary);padding:12px 16px;border-radius:4px 16px 16px;color:var(--text-primary);font-size:15px;line-height:1.7}.message-content p{margin-bottom:12px}.message-content p:last-child{margin-bottom:0}.message-content code{background:var(--bg-tertiary);padding:2px 6px;border-radius:4px;font-size:14px;font-family:Courier New,monospace}.message-content pre{background:var(--bg-tertiary);padding:16px;border-radius:8px;overflow-x:auto;margin:12px 0}.message-content pre code{background:none;padding:0}.message-images{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px;margin:16px 0}.image-container{background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:8px;overflow:hidden;transition:all .2s}.image-container:hover{border-color:var(--accent);transform:translateY(-2px)}.image-container img{width:100%;height:auto;display:block;background:var(--bg-primary)}.image-description{padding:12px;font-size:13px;color:var(--text-secondary);line-height:1.5;margin:0}.referenced-docs{margin-top:12px;padding:12px;background:#0003;border-radius:8px}.docs-header{font-size:13px;font-weight:500;color:var(--text-muted);margin-bottom:8px}.docs-list{display:flex;flex-direction:column;gap:6px}.doc-reference{display:flex;flex-direction:column}.doc-link{display:flex;align-items:center;gap:8px;padding:8px 12px;background:#0000004d;border:1px solid rgba(255,255,255,.1);border-radius:6px;color:var(--accent);font-size:14px;cursor:pointer;transition:all .2s;text-align:left;width:100%}.doc-link:hover{background:#0006;border-color:var(--accent);transform:translate(2px)}.doc-link>span{flex:1;min-width:0}.page-refs{opacity:.7;font-size:.9em}.page-ref-link{background:none;border:none;color:var(--accent);cursor:pointer;padding:0;font-size:inherit;text-decoration:underline;text-underline-offset:2px;transition:all .2s}.page-ref-link:hover{opacity:.7;text-decoration-thickness:2px}.markdown-content{white-space:pre-wrap}.inline-page-link{background:none;border:none;color:var(--accent);cursor:pointer;padding:0;font-size:inherit;text-decoration:underline;text-underline-offset:2px;transition:all .2s;font-weight:600}.inline-page-link:hover{opacity:.7;text-decoration-thickness:2px}.inline-excerpt-link{background:none;border:none;color:var(--accent);cursor:pointer;padding:0;font-size:inherit;font-family:inherit;text-decoration:underline;text-underline-offset:2px;transition:all .2s;font-weight:600}.inline-excerpt-link:hover{opacity:.7;text-decoration-thickness:2px}.inline-doc-link{background:none;border:none;color:var(--accent);cursor:pointer;padding:0;font-size:inherit;text-decoration:underline;text-underline-offset:2px;transition:all .2s;font-weight:600}.inline-doc-link:hover{opacity:.7;text-decoration-thickness:2px}.typing-indicator{display:flex;gap:6px;padding:12px 0}.typing-indicator span{width:8px;height:8px;border-radius:50%;background:var(--text-muted);animation:bounce 1.4s infinite}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}@keyframes bounce{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-10px)}}.chat-input-form{padding:24px;border-top:1px solid var(--border-color);display:flex;gap:12px;max-width:800px;margin:0 auto;width:100%}.chat-input{flex:1;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;padding:14px 20px;font-size:15px;color:var(--text-primary);resize:none;transition:border-color .2s}.chat-input:focus{outline:none;border-color:var(--accent)}.chat-input:disabled{opacity:.6;cursor:not-allowed}.send-button{width:48px;height:48px;background:var(--accent);border:none;border-radius:12px;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;flex-shrink:0}.send-button:hover:not(:disabled){background:var(--accent-hover);transform:translateY(-1px)}.send-button:disabled{opacity:.4;cursor:not-allowed}.documents-view{flex:1;overflow-y:auto;padding:32px}.documents-header{max-width:1200px;margin:0 auto 32px;display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:24px}.documents-header h1{font-size:32px;margin-bottom:8px}.documents-subtitle{color:var(--text-secondary);margin-bottom:0}.documents-actions{display:flex;gap:12px;align-items:center}.refresh-button{display:flex;align-items:center;gap:8px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;padding:12px 20px;color:var(--text-secondary);font-size:15px;cursor:pointer;transition:all .2s;white-space:nowrap}.refresh-button:hover:not(:disabled){background:var(--bg-tertiary);color:var(--text-primary);border-color:var(--bg-hover)}.refresh-button:disabled{opacity:.5;cursor:not-allowed}.search-box{flex:1;display:flex;align-items:center;gap:12px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;padding:12px 16px}.search-box input{flex:1;background:none;border:none;color:var(--text-primary);font-size:15px}.search-box input:focus{outline:none}.upload-button{display:flex;align-items:center;gap:8px;background:var(--accent);border:none;border-radius:12px;padding:12px 24px;color:#fff;font-size:15px;font-weight:500;cursor:pointer;transition:background .2s;white-space:nowrap}.upload-button:hover{background:var(--accent-hover)}.upload-progress{max-width:1200px;margin:0 auto 24px;padding:16px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px}.progress-bar{height:8px;background:var(--bg-tertiary);border-radius:4px;overflow:hidden;margin-bottom:8px}.progress-fill{height:100%;background:var(--accent);transition:width .3s ease}.progress-text{font-size:14px;color:var(--text-secondary)}.status-message{max-width:1200px;margin:0 auto 24px;padding:12px 16px;border-radius:8px;font-size:14px}.status-message.success{background:#00a6931a;border:1px solid var(--success);color:var(--success)}.status-message.error{background:#ef44441a;border:1px solid var(--error);color:var(--error)}.documents-loading{max-width:1200px;margin:0 auto;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:64px 24px;gap:16px;color:var(--text-secondary)}.documents-empty{max-width:1200px;margin:0 auto;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:64px 24px;gap:16px;color:var(--text-muted);text-align:center}.documents-empty h2{font-size:24px;color:var(--text-primary)}.documents-empty p{font-size:16px;color:var(--text-secondary)}.documents-grid{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px}.empty-documents{grid-column:1 / -1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:64px 24px;color:var(--text-secondary);text-align:center;gap:16px}.empty-documents h3{font-size:20px;color:var(--text-primary);margin-top:8px}.document-card{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;padding:20px;display:flex;gap:16px;transition:all .2s;position:relative}.document-card:hover{border-color:var(--bg-hover);transform:translateY(-2px)}.document-icon{width:48px;height:48px;background:var(--bg-tertiary);border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--accent)}.document-info{flex:1;min-width:0}.document-title{font-size:16px;font-weight:500;margin-bottom:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.document-description{font-size:14px;color:var(--text-secondary);margin-bottom:8px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.document-meta{display:flex;gap:8px;align-items:center;font-size:13px;color:var(--text-muted);margin-bottom:8px}.document-card .delete-button{position:absolute;bottom:16px;right:16px;background:none;border:none;padding:8px;color:var(--text-muted);cursor:pointer;border-radius:6px;transition:all .2s;opacity:0}.document-card:hover .delete-button{opacity:1}.document-card .delete-button:hover{background:var(--bg-tertiary);color:var(--error, #ef4444)}.document-card .delete-button:disabled{cursor:not-allowed;opacity:.5}.document-card .delete-button .spinner{animation:spin 1s linear infinite}.document-card .move-button{position:absolute;top:16px;right:16px;background:none;border:none;padding:8px;color:var(--text-muted);cursor:pointer;border-radius:6px;transition:all .2s;opacity:0}.document-card:hover .move-button{opacity:1}.document-card .move-button:hover{background:var(--bg-tertiary);color:var(--accent)}.folders-section{max-width:1200px;margin:0 auto 32px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;padding:20px}.folders-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.folders-header h2{font-size:18px;font-weight:600;color:var(--text-primary);margin:0}.new-folder-button{background:none;border:none;padding:8px;color:var(--accent);cursor:pointer;border-radius:6px;transition:all .2s;display:flex;align-items:center;justify-content:center}.new-folder-button:hover{background:var(--bg-tertiary)}.folders-list{display:flex;flex-direction:column;gap:4px}.folder-item-container{position:relative;display:flex;align-items:center;gap:4px}.folder-item{flex:1;display:flex;align-items:center;gap:12px;background:none;border:none;border-radius:8px;padding:12px;color:var(--text-secondary);font-size:14px;cursor:pointer;transition:all .2s;text-align:left}.folder-item:hover,.folder-item.active{background:var(--bg-tertiary);color:var(--text-primary)}.folder-item span:first-of-type{flex:1}.folder-count{background:var(--bg-tertiary);padding:2px 8px;border-radius:12px;font-size:12px;color:var(--text-muted);font-weight:500}.folder-item.active .folder-count{background:var(--bg-primary)}.folder-actions{display:flex;gap:4px;opacity:0;transition:opacity .2s}.folder-item-container:hover .folder-actions{opacity:1}.folder-actions button{background:none;border:none;padding:6px;color:var(--text-muted);cursor:pointer;border-radius:4px;transition:all .2s;display:flex;align-items:center;justify-content:center}.folder-actions button:hover{background:var(--bg-tertiary);color:var(--text-primary)}.folder-actions button:last-child:hover{color:var(--error, #ef4444)}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:12px;padding:24px;max-width:450px;width:90%;box-shadow:0 20px 25px -5px #0003}.modal h3{font-size:18px;font-weight:600;color:var(--text-primary);margin:0 0 16px}.modal-subtitle{font-size:14px;color:var(--text-secondary);margin:0 0 16px}.modal input{width:100%;padding:12px;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:8px;color:var(--text-primary);font-size:14px;outline:none;transition:border-color .2s;box-sizing:border-box}.modal input:focus{border-color:var(--accent)}.modal-actions{display:flex;gap:12px;justify-content:flex-end;margin-top:20px}.cancel-button{padding:10px 20px;background:var(--bg-tertiary);border:none;border-radius:8px;color:var(--text-primary);font-size:14px;font-weight:500;cursor:pointer;transition:all .2s}.cancel-button:hover{background:var(--bg-hover)}.confirm-button{padding:10px 20px;background:var(--accent);border:none;border-radius:8px;color:#fff;font-size:14px;font-weight:500;cursor:pointer;transition:all .2s}.confirm-button:hover{opacity:.9}.confirm-button:disabled{opacity:.5;cursor:not-allowed}.folder-select-list{display:flex;flex-direction:column;gap:8px;max-height:300px;overflow-y:auto;margin-bottom:16px}.folder-select-item{display:flex;align-items:center;gap:12px;padding:12px;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:8px;color:var(--text-secondary);font-size:14px;cursor:pointer;transition:all .2s;text-align:left}.folder-select-item:hover,.folder-select-item.active{background:var(--bg-tertiary);border-color:var(--accent);color:var(--text-primary)}.document-status{display:flex;align-items:center;gap:6px;font-size:13px;padding:4px 8px;border-radius:4px;margin-top:8px}.document-status.completed{background:#00a6931a;color:var(--success)}.document-status.processing{background:#64748b1a;color:var(--text-muted)}.document-status.error{background:#ef44441a;color:var(--error)}.document-actions{display:flex;gap:8px;align-items:flex-start}.icon-button{width:36px;height:36px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:8px;color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s}.icon-button:hover{background:var(--bg-hover);color:var(--text-primary)}.icon-button.delete:hover{background:var(--error);border-color:var(--error);color:#fff}@media (max-width: 768px){.mobile-menu-toggle{display:block}.app{flex-direction:column}.sidebar{position:fixed;top:0;left:0;width:280px;height:100vh;transform:translate(-100%);transition:transform .3s ease;z-index:150;border-right:1px solid var(--border-color);border-bottom:none;max-height:none}.sidebar.sidebar-open{transform:translate(0);box-shadow:2px 0 8px #0000004d}.sidebar-header{padding:12px}.new-chat-button{padding:10px;font-size:13px}.sidebar-nav{padding:12px}.nav-item{padding:10px;font-size:13px}.chat-history{padding:12px;max-height:none;flex:1}.history-button{padding:10px;font-size:13px}.sidebar-footer{padding:12px}.sign-out-button{padding:10px;font-size:13px}.main-content{flex:1;min-height:0;width:100%}.messages-container{padding:70px 12px 12px}.messages{max-width:100%}.message{gap:8px;margin-bottom:12px;max-width:90%}.message-icon{width:32px;height:32px}.message.user .message-content,.message.assistant .message-content{font-size:15px;line-height:1.6;padding:10px 14px}.chat-input-form{padding:12px;gap:8px;background:var(--bg-primary);border-top:1px solid var(--border-color)}.chat-input{padding:14px 16px;font-size:16px;border-radius:8px}.send-button{width:48px;height:48px;border-radius:8px}.empty-state{padding:16px}.empty-state h2{font-size:24px}.empty-state p{font-size:14px}.referenced-docs{margin-top:10px;padding:10px}.docs-header{font-size:12px;margin-bottom:6px}.doc-link{padding:10px 12px;font-size:14px;min-height:44px}.inline-page-link,.inline-excerpt-link,.inline-doc-link{padding:4px 8px;min-height:32px;display:inline-flex;align-items:center;justify-content:center}.documents-view{padding:16px}.documents-header{margin-bottom:20px;flex-direction:column;align-items:stretch}.documents-header h1{font-size:24px}.documents-subtitle{font-size:14px}.documents-actions{flex-direction:column;width:100%}.search-box{width:100%}.upload-button,.refresh-button{width:100%;justify-content:center}.documents-grid{grid-template-columns:1fr}.document-card{padding:16px}.folders-section{margin-bottom:20px;padding:16px}.folders-header h2{font-size:16px}.folder-item{padding:10px;font-size:13px}.auth-card{padding:32px 24px}.auth-card h1{font-size:28px}.auth-logo{max-width:150px}.modal{width:95%;padding:20px}.modal h3{font-size:16px}}