:root{--bg-primary: #ffffff;--bg-secondary: #f7f7f8;--bg-tertiary: #ececec;--bg-sidebar: #f9f9f9;--bg-hover: #f0f0f0;--bg-active: #e8e8e8;--text-primary: #1a1a1a;--text-secondary: #6b6b6b;--text-tertiary: #999999;--border-color: #e5e5e5;--border-light: #f0f0f0;--accent: #1a1a1a;--accent-green: #10a37f;--accent-blue: #6366f1;--accent-purple: #8b5cf6;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 12px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 30px rgba(0, 0, 0, .12);--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;font-family:var(--font-sans);font-size:15px;line-height:1.6;color:var(--text-primary);background:var(--bg-primary);-webkit-font-smoothing:antialiased}#root{height:100%}.app{display:flex;height:100vh;overflow:hidden}.main-content{flex:1;display:flex;flex-direction:column;overflow:hidden;position:relative}.sidebar{width:260px;min-width:260px;background:var(--bg-sidebar);border-right:1px solid var(--border-color);display:flex;flex-direction:column;height:100vh}.sidebar-toggle-btn{position:fixed;left:8px;top:12px;z-index:100;width:32px;height:32px;display:flex;align-items:center;justify-content:center;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-sm);cursor:pointer;color:var(--text-secondary);transition:all .15s}.sidebar-toggle-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.sidebar-header{display:flex;align-items:center;gap:8px;padding:12px}.sidebar-new-chat{flex:1;display:flex;align-items:center;gap:8px;padding:10px 14px;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;font-size:14px;font-weight:500;color:var(--text-primary);transition:all .15s}.sidebar-new-chat:hover{background:var(--bg-hover)}.sidebar-collapse{width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:none;border:none;border-radius:var(--radius-sm);cursor:pointer;color:var(--text-secondary);transition:all .15s}.sidebar-collapse:hover{background:var(--bg-hover);color:var(--text-primary)}.sidebar-nav{display:flex;gap:4px;padding:0 12px 8px}.sidebar-nav-btn{flex:1;display:flex;align-items:center;justify-content:center;gap:6px;padding:8px;background:none;border:1px solid transparent;border-radius:var(--radius-sm);cursor:pointer;font-size:13px;color:var(--text-secondary);transition:all .15s}.sidebar-nav-btn:hover{background:var(--bg-hover)}.sidebar-nav-btn.active{background:var(--bg-primary);border-color:var(--border-color);color:var(--text-primary);font-weight:500}.sidebar-badge{background:var(--accent-green);color:#fff;font-size:11px;font-weight:600;padding:1px 6px;border-radius:10px}.sidebar-chats{flex:1;overflow-y:auto;padding:0 8px}.sidebar-chats::-webkit-scrollbar{width:4px}.sidebar-chats::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}.chat-group{margin-bottom:8px}.chat-group-label{padding:8px 12px 4px;font-size:11px;font-weight:600;color:var(--text-tertiary);text-transform:uppercase;letter-spacing:.5px}.chat-item{display:flex;align-items:center;gap:8px;padding:8px 12px;border-radius:var(--radius-sm);cursor:pointer;transition:all .15s;color:var(--text-secondary);position:relative}.chat-item:hover{background:var(--bg-hover);color:var(--text-primary)}.chat-item.active{background:var(--bg-active);color:var(--text-primary)}.chat-item-title{flex:1;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-item-delete{display:flex;align-items:center;justify-content:center;width:28px;height:28px;background:none;border:none;border-radius:var(--radius-sm);cursor:pointer;color:var(--text-tertiary);transition:all .15s;flex-shrink:0}.chat-item-delete:hover{background:#fee2e2;color:#ef4444}.sidebar-empty{padding:32px 20px;text-align:center;color:var(--text-tertiary)}.sidebar-empty p{font-size:14px}.sidebar-empty-sub{font-size:12px;margin-top:4px}.sidebar-footer{padding:12px;border-top:1px solid var(--border-color)}.sidebar-footer-btn{width:100%;display:flex;align-items:center;gap:8px;padding:8px 12px;background:none;border:none;border-radius:var(--radius-sm);cursor:pointer;font-size:14px;color:var(--text-secondary);transition:all .15s}.sidebar-footer-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.sidebar-user{padding:8px 12px;margin-bottom:8px;border-bottom:1px solid var(--border-color)}.sidebar-user-info{display:flex;align-items:center;gap:10px}.sidebar-user-avatar{width:36px;height:36px;border-radius:50%;background:var(--accent-green);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:14px;flex-shrink:0}.sidebar-user-details{flex:1;min-width:0}.sidebar-user-name{font-size:13px;font-weight:600;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-user-email{font-size:11px;color:var(--text-tertiary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.app.app-auth{display:block;height:100vh;overflow:auto}.auth-container{display:flex;align-items:center;justify-content:center;min-height:100vh;width:100%;background:var(--bg-primary);padding:20px}.auth-card{width:100%;max-width:400px;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:40px;box-shadow:0 2px 8px #0000001a}.auth-header{text-align:center;margin-bottom:32px}.auth-logo{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;background:var(--bg-secondary);color:var(--text-primary);border-radius:var(--radius-md);margin-bottom:16px;border:1px solid var(--border-color)}.auth-title{font-size:24px;font-weight:700;color:var(--text-primary);margin:0 0 8px}.auth-subtitle{font-size:14px;color:var(--text-secondary);margin:0}.auth-error{background:#fef2f2;border:1px solid #fecaca;color:#dc2626;padding:12px;border-radius:var(--radius-sm);font-size:13px;margin-bottom:20px}.auth-form{display:flex;flex-direction:column;gap:20px}.auth-field{display:flex;flex-direction:column;gap:6px}.auth-field label{font-size:13px;font-weight:600;color:var(--text-primary)}.auth-field input{padding:10px 12px;border:1px solid var(--border-color);border-radius:var(--radius-sm);font-size:14px;background:var(--bg-primary);color:var(--text-primary);transition:border-color .15s}.auth-field input:focus{outline:none;border-color:var(--text-primary)}.auth-hint{font-size:11px;color:var(--text-tertiary);margin-top:-4px}.auth-submit{padding:12px;background:var(--text-primary);color:#fff;border:none;border-radius:var(--radius-sm);font-size:14px;font-weight:600;cursor:pointer;transition:all .15s;margin-top:4px}.auth-submit:hover:not(:disabled){background:var(--accent);opacity:.9}.auth-submit:disabled{opacity:.6;cursor:not-allowed}.auth-footer{margin-top:24px;text-align:center;font-size:13px;color:var(--text-secondary)}.auth-link{background:none;border:none;color:var(--text-primary);cursor:pointer;font-weight:600;text-decoration:underline;padding:0;transition:opacity .15s}.auth-link:hover{opacity:.7}.chat-area{flex:1;display:flex;flex-direction:column;height:100%;position:relative}.messages-container{flex:1;overflow-y:auto;padding:20px 0}.messages-container::-webkit-scrollbar{width:6px}.messages-container::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:6px}.messages-inner{max-width:768px;margin:0 auto;padding:0 24px}.message{display:flex;gap:16px;padding:16px 0}.message+.message{border-top:1px solid var(--border-light)}.message-avatar{flex-shrink:0}.avatar{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center}.avatar-user{background:var(--bg-tertiary);color:var(--text-primary)}.avatar-assistant{background:var(--accent);color:#fff}.message-body{flex:1;min-width:0}.message-role{font-size:14px;font-weight:600;margin-bottom:4px;display:flex;align-items:center;gap:8px}.message-mode-badge{display:inline-flex;align-items:center;gap:4px;font-size:11px;font-weight:500;padding:2px 8px;border-radius:10px;background:var(--bg-secondary);color:var(--text-secondary)}.message-content{font-size:15px;line-height:1.7;color:var(--text-primary)}.message-content p{margin-bottom:8px}.message-content p:last-child{margin-bottom:0}.message-content h1,.message-content h2,.message-content h3{margin:16px 0 8px;font-weight:600}.message-content h1{font-size:1.4em}.message-content h2{font-size:1.2em}.message-content h3{font-size:1.1em}.message-content ul,.message-content ol{margin:8px 0;padding-left:24px}.message-content li{margin:4px 0}.message-content blockquote{border-left:3px solid var(--border-color);padding-left:16px;margin:12px 0;color:var(--text-secondary)}.inline-code{background:var(--bg-secondary);padding:2px 6px;border-radius:4px;font-family:var(--font-mono);font-size:.9em}.code-block{margin:12px 0;border-radius:var(--radius-sm);overflow:hidden;background:#1e1e1e}.code-block pre{padding:16px;overflow-x:auto;font-family:var(--font-mono);font-size:13px;line-height:1.5}.code-block code{color:#d4d4d4}.message-sources{margin-top:12px}.sources-toggle{display:flex;align-items:center;gap:6px;padding:6px 12px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-sm);cursor:pointer;font-size:13px;color:var(--text-secondary);transition:all .15s}.sources-toggle:hover{background:var(--bg-hover)}.sources-list{margin-top:8px;display:flex;flex-direction:column;gap:8px}.source-item{padding:10px 14px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-sm)}.source-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:4px}.source-title{display:flex;align-items:center;gap:6px;font-size:13px;font-weight:500;color:var(--text-primary);text-decoration:none}a.source-title:hover{color:var(--accent-blue)}.source-score{font-size:12px;color:var(--accent-green);font-weight:600}.source-snippet{font-size:12px;color:var(--text-secondary);line-height:1.5}.message-actions{display:flex;gap:4px;margin-top:8px;opacity:0;transition:opacity .15s}.message:hover .message-actions{opacity:1}.message-action-btn{display:flex;align-items:center;justify-content:center;width:28px;height:28px;background:none;border:1px solid transparent;border-radius:var(--radius-sm);cursor:pointer;color:var(--text-tertiary);transition:all .15s}.message-action-btn:hover{background:var(--bg-secondary);border-color:var(--border-color);color:var(--text-primary)}.generated-document-badge{margin-top:12px;margin-bottom:4px}.generated-document-btn{display:flex;align-items:center;gap:8px;padding:10px 14px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-sm);cursor:pointer;transition:all .15s;font-size:13px;font-weight:500;color:var(--text-primary);width:100%;justify-content:flex-start}.generated-document-btn:hover{background:var(--bg-hover);border-color:var(--accent-green);transform:translateY(-1px);box-shadow:var(--shadow-sm)}.generated-document-label{flex:1;text-align:left}.generated-document-btn svg:last-child{opacity:.6;transition:opacity .15s}.generated-document-btn:hover svg:last-child{opacity:1}.chat-toolbar{display:flex;align-items:center;justify-content:flex-end;padding:8px 24px;border-bottom:1px solid var(--border-light);background:var(--bg-primary);flex-shrink:0}.chat-toolbar-right{position:relative}.chat-export-btn{display:flex;align-items:center;gap:6px;padding:6px 14px;background:none;border:1px solid var(--border-color);border-radius:var(--radius-sm);cursor:pointer;font-size:13px;font-weight:500;color:var(--text-secondary);transition:all .15s}.chat-export-btn:hover{background:var(--bg-secondary);color:var(--text-primary);border-color:var(--text-tertiary)}.chat-export-btn:disabled{opacity:.5;cursor:not-allowed}.ai-export-suggestion{margin-top:12px;padding:12px 16px;background:linear-gradient(135deg,#f0f9ff,#e0f2fe);border:1px solid #bae6fd;border-radius:var(--radius-md);position:relative;animation:suggestionSlideIn .3s 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var(--border-color);border-radius:var(--radius-md);box-shadow:var(--shadow-md);padding:4px;z-index:100;animation:exportMenuIn .12s ease-out}.export-menu-right{left:auto;right:0;bottom:auto;top:calc(100% + 6px)}@keyframes exportMenuIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.export-menu-item{display:flex;align-items:center;gap:10px;width:100%;padding:8px 12px;background:none;border:none;border-radius:var(--radius-sm);cursor:pointer;font-size:13px;color:var(--text-primary);transition:background .1s;text-align:left}.export-menu-item:hover{background:var(--bg-hover)}.export-menu-item span:first-of-type{flex:1}.export-menu-ext{font-size:11px;color:var(--text-tertiary);font-family:var(--font-mono)}.export-spinner{display:inline-block;width:14px;height:14px;border:2px solid var(--border-color);border-top-color:var(--text-secondary);border-radius:50%;animation:spin .6s linear infinite}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 24px}.empty-logo{width:64px;height:64px;display:flex;align-items:center;justify-content:center;background:var(--accent);color:#fff;border-radius:50%;margin-bottom:16px}.empty-title{font-size:28px;font-weight:700;color:var(--text-primary);margin-bottom:8px}.empty-subtitle{font-size:15px;color:var(--text-secondary);margin-bottom:32px}.empty-suggestions{display:grid;grid-template-columns:1fr 1fr;gap:12px;max-width:500px;width:100%}.suggestion-card{display:flex;align-items:center;gap:10px;padding:14px 18px;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;font-size:14px;color:var(--text-secondary);text-align:left;transition:all .15s}.suggestion-card:hover{background:var(--bg-secondary);border-color:var(--text-tertiary);color:var(--text-primary)}.input-container{padding:0 24px 20px;max-width:816px;margin:0 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.15s;flex-shrink:0}.input-send-btn:hover{opacity:.85}.input-send-btn:disabled{background:var(--bg-tertiary);color:var(--text-tertiary);cursor:not-allowed}.input-hint{text-align:center;font-size:12px;color:var(--text-tertiary);margin-top:8px}.drag-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#fffffff2;display:flex;align-items:center;justify-content:center;z-index:50;font-size:18px;font-weight:500;color:var(--accent-green);border:3px dashed var(--accent-green);border-radius:var(--radius-md);margin:12px}.upload-notification{display:flex;align-items:center;gap:10px;padding:10px 16px;margin:8px 24px 0;border:1px solid;border-radius:var(--radius-sm);font-size:13px;animation:slideDown .3s ease-out;z-index:10;position:relative}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.upload-notify-icon{display:flex;align-items:center;flex-shrink:0}.upload-notify-spinner{animation:spin 1s linear 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var(--border-color);border-radius:var(--radius-xl);cursor:pointer;font-size:13px;font-weight:500;color:var(--text-secondary);transition:all .15s}.upload-mode-btn:hover{border-color:var(--text-tertiary);color:var(--text-primary)}.upload-mode-btn.active{border-color:var(--accent);background:var(--bg-secondary);color:var(--text-primary);font-weight:600}.upload-mode-reset{background:none;border:none;font-size:12px;color:var(--text-tertiary);cursor:pointer;text-decoration:underline}.upload-mode-reset:hover{color:var(--text-secondary)}.doc-mode-badge{font-size:11px;font-weight:600;padding:1px 7px;border-radius:8px}.doc-mode-parse{background:#e0f2fe;color:#0369a1}.doc-mode-ocr{background:#fef3c7;color:#92400e}.documents-search{margin-bottom:24px}.search-form{display:flex;align-items:center;gap:8px;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:4px 8px 4px 14px;transition:border-color .15s}.search-form:focus-within{border-color:var(--text-tertiary)}.search-icon{color:var(--text-tertiary);flex-shrink:0}.search-input{flex:1;border:none;outline:none;font-size:14px;padding:8px 4px;background:transparent;color:var(--text-primary)}.search-input::placeholder{color:var(--text-tertiary)}.search-btn{padding:6px 16px;background:var(--accent);color:#fff;border:none;border-radius:var(--radius-sm);cursor:pointer;font-size:13px;font-weight:500;transition:opacity .15s}.search-btn:hover{opacity:.85}.search-btn:disabled{opacity:.5;cursor:not-allowed}.search-results{margin-top:16px}.search-results-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.search-results-header h3{font-size:14px;font-weight:600}.clear-btn{background:none;border:none;color:var(--text-secondary);cursor:pointer;font-size:13px;text-decoration:underline}.search-result-item{padding:12px 16px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-sm);margin-bottom:8px}.search-result-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}.search-result-doc{display:flex;align-items:center;gap:6px;font-size:13px;font-weight:500;color:var(--text-primary)}.search-result-score{font-size:12px;font-weight:600;color:var(--accent-green)}.search-result-content{font-size:13px;color:var(--text-secondary);line-height:1.5}.documents-list{display:flex;flex-direction:column;gap:8px}.documents-empty{display:flex;flex-direction:column;align-items:center;gap:8px;padding:60px 20px;color:var(--text-tertiary);text-align:center}.documents-empty p{font-size:15px}.documents-empty-sub{font-size:13px}.document-card{display:flex;align-items:center;gap:14px;padding:14px 18px;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-md);transition:all .15s}.document-card:hover{border-color:var(--text-tertiary);box-shadow:var(--shadow-sm)}.file-emoji{font-size:28px}.document-card-info{flex:1;min-width:0}.document-card-name{font-size:14px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:2px}.document-card-meta{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-secondary)}.document-card-actions{display:flex;gap:4px;flex-shrink:0}.doc-action-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;background:none;border:1px solid var(--border-color);border-radius:var(--radius-sm);cursor:pointer;color:var(--text-secondary);transition:all .15s}.doc-action-btn:hover{background:var(--bg-secondary);color:var(--text-primary)}.doc-action-delete:hover{background:#fee2e2;color:#ef4444;border-color:#fecaca}.status-ready{color:var(--accent-green)}.status-processing{color:#f59e0b;animation:spin 1s linear infinite}.status-error{color:#ef4444}.document-viewer{flex:1;overflow-y:auto;padding:24px 40px;max-width:900px;margin:0 auto;width:100%}.loading-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:80px 20px;color:var(--text-secondary)}.back-btn{display:flex;align-items:center;gap:6px;padding:6px 12px;background:none;border:1px solid var(--border-color);border-radius:var(--radius-sm);cursor:pointer;font-size:13px;color:var(--text-secondary);transition:all .15s}.back-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.doc-viewer-header{margin-bottom:20px}.doc-viewer-info{margin-top:16px}.doc-viewer-info h2{font-size:22px;font-weight:700;margin-bottom:8px}.doc-viewer-meta{display:flex;gap:16px;color:var(--text-secondary);font-size:13px}.doc-viewer-meta span{display:flex;align-items:center;gap:4px}.doc-viewer-tabs{display:flex;gap:0;border-bottom:1px solid var(--border-color);margin-bottom:20px}.doc-tab{display:flex;align-items:center;gap:6px;padding:10px 20px;background:none;border:none;border-bottom:2px solid transparent;cursor:pointer;font-size:14px;font-weight:500;color:var(--text-secondary);transition:all .15s}.doc-tab:hover{color:var(--text-primary)}.doc-tab.active{color:var(--text-primary);border-bottom-color:var(--accent)}.doc-viewer-content{min-height:300px}.doc-content-view{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:20px;overflow:auto;max-height:calc(100vh - 300px)}.doc-raw-content{white-space:pre-wrap;word-wrap:break-word;font-family:var(--font-mono);font-size:13px;line-height:1.6;color:var(--text-primary)}.doc-no-content{color:var(--text-tertiary);text-align:center;padding:40px}.chunks-toolbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.chunks-info{font-size:13px;color:var(--text-secondary)}.chunks-actions{display:flex;gap:8px}.chunks-action-btn{padding:4px 12px;background:none;border:1px solid var(--border-color);border-radius:var(--radius-sm);cursor:pointer;font-size:12px;color:var(--text-secondary);transition:all .15s}.chunks-action-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.chunks-list{display:flex;flex-direction:column;gap:8px}.chunk-card{border:1px solid var(--border-color);border-radius:var(--radius-md);overflow:hidden;transition:border-color .15s}.chunk-card.expanded{border-color:var(--text-tertiary)}.chunk-header{display:flex;align-items:center;justify-content:space-between;padding:10px 16px;background:var(--bg-secondary);cursor:pointer;transition:background .15s}.chunk-header:hover{background:var(--bg-hover)}.chunk-title{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--text-primary)}.chunk-meta{font-weight:400;color:var(--text-secondary);font-size:12px}.chunk-preview{padding:10px 16px;font-size:13px;color:var(--text-secondary);line-height:1.5}.chunk-content{padding:16px;border-top:1px solid var(--border-color)}.chunk-content pre{white-space:pre-wrap;word-wrap:break-word;font-family:var(--font-mono);font-size:13px;line-height:1.6;color:var(--text-primary)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal{width:100%;max-width:640px;max-height:80vh;background:var(--bg-primary);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);display:flex;flex-direction:column;overflow:hidden}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--border-color)}.modal-header h2{font-size:18px;font-weight:700}.modal-close{display:flex;align-items:center;justify-content:center;width:32px;height:32px;background:none;border:none;border-radius:var(--radius-sm);cursor:pointer;color:var(--text-secondary);transition:all .15s}.modal-close:hover{background:var(--bg-hover);color:var(--text-primary)}.settings-layout{flex:1;overflow-y:auto}.settings-tabs{display:flex;gap:0;padding:0 24px;border-bottom:1px solid var(--border-color);overflow-x:auto}.settings-tab{padding:10px 16px;background:none;border:none;border-bottom:2px solid transparent;cursor:pointer;font-size:13px;font-weight:500;color:var(--text-secondary);white-space:nowrap;transition:all .15s}.settings-tab:hover{color:var(--text-primary)}.settings-tab.active{color:var(--text-primary);border-bottom-color:var(--accent)}.settings-content{padding:24px}.settings-section h3{font-size:16px;font-weight:600;margin-bottom:4px}.settings-desc{font-size:13px;color:var(--text-secondary);margin-bottom:20px}.provider-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:20px}.provider-grid.provider-grid-2{grid-template-columns:1fr 1fr}.provider-grid-3{grid-template-columns:1fr 1fr 1fr}.provider-card{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:var(--bg-primary);border:2px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;transition:all .15s}.provider-card:hover{border-color:var(--text-tertiary)}.provider-card.active{border-color:var(--accent);background:var(--bg-secondary)}.provider-name{font-size:14px;font-weight:500;display:block}.provider-desc{font-size:12px;color:var(--text-secondary);font-weight:400;margin-top:4px;line-height:1.4}.provider-badge{font-size:11px;font-weight:600;color:var(--accent-green);padding:2px 8px;background:#10a37f1a;border-radius:10px}.form-group{margin-bottom:16px}.form-group label{display:block;font-size:13px;font-weight:600;color:var(--text-primary);margin-bottom:6px}.form-input,.form-select{width:100%;padding:10px 14px;border:1px solid var(--border-color);border-radius:var(--radius-sm);font-size:14px;font-family:var(--font-sans);color:var(--text-primary);background:var(--bg-primary);transition:border-color .15s;outline:none}.form-input:focus,.form-select:focus{border-color:var(--accent)}.form-hint{display:block;font-size:12px;color:var(--text-tertiary);margin-top:4px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}.mt-2{margin-top:8px}.info-box{padding:12px 16px;background:#f0f9ff;border:1px solid #bae6fd;border-radius:var(--radius-sm);font-size:13px;color:#0369a1;line-height:1.5;margin-top:8px}.info-box code{display:inline-block;background:#0369a11a;padding:2px 8px;border-radius:4px;font-family:var(--font-mono);font-size:12px;font-weight:600}.modal-footer{display:flex;align-items:center;justify-content:flex-end;gap:10px;padding:16px 24px;border-top:1px solid var(--border-color)}.btn-primary,.btn-secondary{display:flex;align-items:center;gap:6px;padding:8px 20px;border-radius:var(--radius-sm);font-size:14px;font-weight:500;cursor:pointer;transition:all .15s;border:none}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{opacity:.85}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-secondary{background:var(--bg-primary);color:var(--text-secondary);border:1px solid var(--border-color)}.btn-secondary:hover{background:var(--bg-hover);color:var(--text-primary)}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.spin{animation:spin 1s linear infinite}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:6px}::-webkit-scrollbar-thumb:hover{background:var(--text-tertiary)}@media (max-width: 768px){.sidebar{position:fixed;z-index:200;height:100vh;box-shadow:var(--shadow-lg)}.empty-suggestions,.provider-grid,.provider-grid.provider-grid-2,.provider-grid.provider-grid-3,.form-row{grid-template-columns:1fr}.documents-page{padding:20px 16px}.document-viewer{padding:16px}.modal{max-width:100%;max-height:90vh;margin:10px}}