:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;min-width:320px;min-height:100vh;background-color:#fff;color:#333}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.header{background-color:#fff;color:#1f2937;padding:.5rem 0;box-shadow:0 2px 4px #0000001a;border-bottom:1px solid #e5e7eb}.header-container{max-width:100%;margin:0 auto;padding:0 1.5rem;display:grid;grid-template-columns:200px 1fr 300px;align-items:center;gap:2rem}.header-left{display:flex;align-items:center}.logo{height:45px;width:auto;object-fit:contain;cursor:pointer}.header-nav{display:flex;justify-content:center;align-items:center;gap:.5rem}.header-nav-button{background:none;border:none;padding:.5rem 1rem;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .2s ease;border-radius:.375rem;color:#6b7280;white-space:nowrap}.header-nav-button:hover{background-color:#f3f4f6;color:#1f2937}.header-nav-button.active{background-color:#e0e7ff;color:#4f46e5;font-weight:600}.header-right{display:flex;align-items:center;justify-content:flex-end}.auth-buttons{display:flex;flex-direction:row;align-items:center;gap:1rem}.user-menu{display:flex;flex-direction:row;align-items:center;gap:.75rem}.user-info{margin:0;font-weight:500;color:#1f2937;white-space:nowrap;font-size:.875rem}.btn{padding:.4rem .875rem;border:none;border-radius:.375rem;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .2s;white-space:nowrap}.btn-primary{background-color:#3b82f6;color:#fff}.btn-primary:hover{background-color:#2563eb}.btn-secondary{background-color:#6b7280;color:#fff}.btn-secondary:hover{background-color:#4b5563}@media (max-width: 1024px){.header-container{grid-template-columns:150px 1fr 250px;gap:1rem;padding:0 1rem}.logo-text{font-size:1rem}.header-nav-button{padding:.4rem .75rem;font-size:.8rem}.user-menu{gap:.5rem}.btn{padding:.35rem .7rem;font-size:.8rem}.user-info{font-size:.8rem}}@media (max-width: 768px){.header-container{grid-template-columns:1fr;grid-template-rows:auto auto;gap:.75rem;padding:.5rem 1rem}.header-left{grid-column:1;grid-row:1;justify-content:center}.header-nav{grid-column:1;grid-row:2;justify-content:flex-start;overflow-x:auto;padding-bottom:.5rem}.header-right{position:absolute;top:.5rem;right:1rem}.user-info{display:none}.user-menu{gap:.5rem}.btn{padding:.3rem .6rem;font-size:.75rem;min-width:auto}}.question-form-container{max-width:800px;margin:1rem auto;padding:0 1rem}.question-form-title{color:#1f2937;margin-bottom:1rem;font-size:1.5rem;font-weight:600;text-align:center}.question-form{background:#fff;border-radius:12px;padding:1.5rem;box-shadow:0 4px 6px #0000001a;border:1px solid #e5e7eb}.category-filter-header{margin-bottom:.75rem;display:flex;align-items:center;flex-wrap:wrap;gap:.5rem}.toggle-text-inline{color:#374151;font-size:.9rem;font-weight:400;cursor:pointer;-webkit-user-select:none;user-select:none;display:inline-block;flex-shrink:0}.toggle-text-inline:hover{color:#1f2937}.selected-categories-inline{display:flex;align-items:center;flex-wrap:wrap;gap:.5rem}.category-tag{display:inline-flex;align-items:center;gap:.25rem;background:#dbeafe;color:#1e40af;padding:.25rem .625rem;border-radius:4px;font-size:.875rem;border:1px solid #bfdbfe;font-weight:500}.category-tag.medium{background:#f3e8ff;color:#7c3aed;border-color:#e9d5ff}.remove-tag-button{background:none;border:none;color:currentColor;cursor:pointer;font-size:1rem;line-height:1;padding:0;margin-left:.25rem;opacity:.7}.remove-tag-button:hover{opacity:1;color:#dc2626}.category-message{color:#374151;font-size:.9rem;font-weight:400;white-space:nowrap}.category-filter-section{background:#f9fafb;border:1px solid #e5e7eb;border-radius:8px;padding:1rem;margin-bottom:1rem}.category-filter-section h3{color:#374151;margin-bottom:1rem;font-size:1.1rem;font-weight:600}.selected-categories{margin-top:1rem;padding-top:1rem;border-top:1px solid #e5e7eb}.selected-category-group{margin-bottom:.5rem}.selected-category-group h4{color:#6b7280;margin-bottom:.5rem;font-size:.9rem;font-weight:500}.selected-category-list{display:flex;flex-wrap:wrap;gap:.5rem;min-height:2rem}.selected-category-tag{display:inline-flex;align-items:center;background:#dbeafe;color:#1e40af;padding:.25rem .5rem;border-radius:4px;font-size:.8rem;border:1px solid #bfdbfe}.selected-category-tag.medium{background:#f3e8ff;color:#7c3aed;border-color:#e9d5ff}.remove-category-button{background:none;border:none;color:currentColor;margin-left:.5rem;cursor:pointer;font-size:1rem;line-height:1;padding:0}.remove-category-button:hover{color:#dc2626}.category-search-section{margin-bottom:0}.category-size-selector{display:flex;gap:1rem;margin-bottom:1rem}.category-size-selector label{display:flex;align-items:center;gap:.5rem;cursor:pointer;font-size:.9rem;color:#374151}.category-search-input{margin-bottom:1rem}.category-search-input input{width:100%;padding:.5rem;border:1px solid #d1d5db;border-radius:6px;font-size:.9rem}.category-search-input input:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 0 2px #3b82f61a}.category-error-message{color:#dc2626;font-size:.8rem;margin-bottom:.5rem}.category-loading{color:#6b7280;font-size:.9rem;text-align:center;padding:1rem}.category-search-results{margin-top:1rem}.category-search-results h5{color:#6b7280;margin-bottom:.5rem;font-size:.8rem;font-weight:500}.category-results-list{display:flex;flex-direction:column;gap:.25rem;max-height:200px;overflow-y:auto}.category-result-item{background:#fff;border:1px solid #e5e7eb;border-radius:4px;padding:.5rem;text-align:left;cursor:pointer;font-size:.9rem;color:#374151;transition:all .2s ease}.category-result-item:hover{background:#f3f4f6;border-color:#9ca3af}.category-result-item.selected{background:#dbeafe;border-color:#3b82f6;color:#1e40af}.form-group{margin-bottom:1.5rem}.form-group textarea{width:100%;box-sizing:border-box;padding:.75rem;border:2px solid #d1d5db;border-radius:8px;font-size:1rem;line-height:1.5;resize:vertical;transition:border-color .2s ease,box-shadow .2s ease;font-family:inherit}.form-group textarea:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 0 3px #3b82f61a}.form-group textarea.error{border-color:#ef4444}.form-group textarea:disabled{background-color:#f9fafb;cursor:not-allowed;opacity:.6}.error-message{color:#ef4444;font-size:.875rem;margin-bottom:1rem;padding:.75rem;background-color:#fef2f2;border:1px solid #fecaca;border-radius:6px;display:flex;align-items:center}.submit-button{width:100%;padding:.75rem 1.5rem;background-color:#3b82f6;color:#fff;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:background-color .2s ease,transform .1s ease;display:flex;align-items:center;justify-content:center;gap:.5rem}.submit-button:hover:not(:disabled){background-color:#2563eb;transform:translateY(-1px)}.submit-button:active:not(:disabled){transform:translateY(0)}.submit-button:disabled{background-color:#9ca3af;cursor:not-allowed;transform:none}.spinner{width:16px;height:16px;border:2px solid transparent;border-top:2px solid white;border-radius:50%;animation:spin 1s linear infinite}@media (max-width: 768px){.question-form-container{margin:1rem auto;padding:0 .5rem}.question-form{padding:1.5rem}.question-form h2{font-size:1.25rem}}.answer-display{background:#fff;border:1px solid #e5e7eb;border-radius:12px;margin-bottom:1.5rem;box-shadow:0 2px 4px #0000000d;overflow:hidden}.timestamp{background:#f9fafb;padding:.5rem 1rem;font-size:.875rem;color:#6b7280;border-bottom:1px solid #e5e7eb;text-align:right}.qa-content{padding:1.5rem}.question-section,.answer-section{margin-bottom:1.5rem}.answer-section{margin-bottom:0}.section-header{display:flex;align-items:center;gap:.5rem;margin-bottom:.75rem;padding-bottom:.5rem;border-bottom:1px solid #f3f4f6}.section-header .icon{font-size:1.2rem}.section-header .label{font-weight:600;color:#374151;font-size:.9rem;text-transform:uppercase;letter-spacing:.05em}.question-text{color:#1f2937;line-height:1.6;font-size:1rem;background:#f8fafc;padding:1rem;border-radius:8px;border-left:4px solid #3b82f6}.answer-text{color:#374151;line-height:1.7;font-size:1rem;background:#f0fdf4;padding:1rem;border-radius:8px;border-left:4px solid #22c55e;white-space:pre-wrap;word-wrap:break-word}@media (max-width: 768px){.qa-content{padding:1rem}.question-text,.answer-text{font-size:.9rem;padding:.75rem}.section-header .icon{font-size:1rem}.section-header .label{font-size:.8rem}}.category-display-container{width:100%;max-width:1400px;margin:0 auto;padding:0 1rem}.category-tabs{display:flex;gap:2rem;margin-bottom:1rem;border-bottom:2px solid #e5e7eb;padding-bottom:.5rem}.category-tab{background:none;border:none;font-size:1.25rem;font-weight:600;color:#9ca3af;cursor:pointer;padding:.75rem 1rem;transition:all .3s ease;position:relative}.category-tab:hover,.category-tab.active{color:#1f2937}.category-tab.active:after{content:"";position:absolute;bottom:-.5rem;left:0;right:0;height:3px;background-color:#1f2937}.category-cards-container{min-height:auto;margin-bottom:2rem}.category-cards-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:2rem;padding:0}.category-card{background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 4px 6px #0000001a;cursor:pointer;transition:all .3s ease;aspect-ratio:4 / 5;display:flex;flex-direction:column;position:relative;border:3px solid transparent}.category-card:hover{transform:translateY(-8px);box-shadow:0 12px 24px #00000026}.category-card.selected{border-color:#3b82f6;box-shadow:0 8px 16px #3b82f64d;background-color:#eff6ff}.category-card.selected:hover{transform:translateY(-8px);box-shadow:0 12px 24px #3b82f666}.category-card-check{position:absolute;top:12px;right:12px;width:32px;height:32px;background-color:#3b82f6;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;z-index:10;box-shadow:0 2px 8px #0003}.category-card-image{width:100%;height:100%;overflow:hidden;background-color:#f3f4f6;position:relative}.category-card-image img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}.category-card:hover .category-card-image img{transform:scale(1.05)}.category-card-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2)}.category-icon{font-size:4rem;opacity:.8}.category-card-content{position:absolute;bottom:0;left:0;right:0;padding:1rem;background-color:#000000d9;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);border-top:7px solid rgba(255,255,255,.9)}.category-card-title{margin:0;font-size:1.125rem;font-weight:600;color:#fff;text-align:center;line-height:1.4;word-wrap:break-word;overflow-wrap:break-word}.category-count-info{margin-top:2rem;text-align:center;color:#6b7280;font-size:.95rem}.no-categories{text-align:center;padding:4rem 2rem;color:#9ca3af}.no-categories p{font-size:1.125rem;margin:0}.category-display-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:400px;gap:1rem}.spinner-large{width:50px;height:50px;border:4px solid #e5e7eb;border-top-color:#3b82f6;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.category-display-error{text-align:center;padding:4rem 2rem;color:#ef4444}.category-display-error p{font-size:1.125rem;margin-bottom:1.5rem}.retry-button{padding:.75rem 2rem;background-color:#3b82f6;color:#fff;border:none;border-radius:.5rem;font-size:1rem;font-weight:500;cursor:pointer;transition:background-color .2s}.retry-button:hover{background-color:#2563eb}@media (max-width: 1400px){.category-cards-grid{grid-template-columns:repeat(4,1fr);gap:1.5rem}}@media (max-width: 1024px){.category-cards-grid{grid-template-columns:repeat(3,1fr);gap:1.5rem}}@media (max-width: 768px){.category-display-container{padding:1.5rem 1rem}.category-tabs{gap:1rem;margin-bottom:2rem}.category-tab{font-size:1.25rem;padding:.5rem .75rem}.category-cards-grid{grid-template-columns:repeat(2,1fr);gap:1.25rem}.category-card-title{font-size:1rem}}@media (max-width: 480px){.category-cards-grid{grid-template-columns:1fr;gap:1rem}.category-card{aspect-ratio:16 / 9}.category-card-image{height:70%}}.qa-page{min-height:100vh;background:#fff;padding:2rem 0 4rem;overflow-y:auto}.category-section{margin-top:0;padding-top:0}@media (max-width: 768px){.qa-page{padding:1rem 0}.category-section{margin-top:0;padding-top:0}}.document-upload{background:#fff;border-radius:8px;padding:20px;box-shadow:0 2px 4px #0000001a;margin-bottom:20px}.document-upload h3{margin-top:0;margin-bottom:16px;color:#333;font-size:1.2em}.upload-area{margin-bottom:16px}.file-input{display:none}.file-label{display:block;border:2px dashed #ddd;border-radius:8px;padding:20px;text-align:center;cursor:pointer;transition:all .3s ease;background:#f9f9f9}.file-label:hover{border-color:#007bff;background:#f0f8ff}.upload-prompt{display:flex;flex-direction:column;align-items:center;gap:8px}.upload-icon{font-size:2em;opacity:.6}.file-types{font-size:.85em;color:#666;opacity:.8}.selected-file{display:flex;align-items:center;gap:12px;padding:12px;background:#fff;border:1px solid #e0e0e0;border-radius:6px}.file-icon{font-size:1.5em}.file-info{flex:1;text-align:left}.file-name{font-weight:500;color:#333;margin-bottom:4px}.file-size{font-size:.85em;color:#666}.upload-button{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:12px 24px;background:#007bff;color:#fff;border:none;border-radius:6px;font-size:1em;font-weight:500;cursor:pointer;transition:all .3s ease;margin-bottom:16px}.upload-button:hover:not(:disabled){background:#0056b3;transform:translateY(-1px)}.upload-button:disabled{background:#ccc;cursor:not-allowed;transform:none}.upload-button.uploading{background:#ffc107;color:#333}.upload-status{padding:12px;border-radius:6px;font-weight:500;text-align:left;white-space:pre-line;line-height:1.5}.upload-status.success{background:#d4edda;color:#155724;border:1px solid #c3e6cb}.upload-status.error{background:#f8d7da;color:#721c24;border:1px solid #f5c6cb}.upload-status.info{background:#cce7ff;color:#004085;border:1px solid #b3d7ff}.category-selection{background:#f9fafb;border:1px solid #e5e7eb;border-radius:8px;padding:1.5rem;margin-bottom:1.5rem}.category-selection h4{color:#374151;margin:0 0 1rem;font-size:1.1rem;font-weight:600}.category-group{margin-bottom:1.5rem}.category-group:last-child{margin-bottom:0}.category-group label{display:block;color:#374151;margin-bottom:.5rem;font-weight:500}.category-search-container{position:relative;margin-bottom:.5rem}.category-search-input{width:100%;padding:.5rem;border:1px solid #d1d5db;border-radius:6px;font-size:.9rem;box-sizing:border-box}.category-search-input:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 0 3px #3b82f61a}.category-dropdown{position:absolute;top:100%;left:0;right:0;background:#fff;border:1px solid #d1d5db;border-radius:6px;box-shadow:0 4px 6px #0000001a;max-height:200px;overflow-y:auto;z-index:1000}.category-option{padding:.5rem;cursor:pointer;border-bottom:1px solid #f3f4f6;font-size:.9rem}.category-option:hover{background:#f3f4f6}.category-option:last-child{border-bottom:none}.selected-categories{display:flex;flex-wrap:wrap;gap:.5rem;min-height:2rem}.category-tag{display:inline-flex;align-items:center;background:#dbeafe;color:#1e40af;padding:.25rem .5rem;border-radius:4px;font-size:.8rem;border:1px solid #bfdbfe;gap:.25rem}.remove-tag{background:none;border:none;color:#1e40af;cursor:pointer;font-size:1rem;padding:0;margin-left:.25rem;width:16px;height:16px;display:flex;align-items:center;justify-content:center;border-radius:50%}.remove-tag:hover{background:#1e40af1a}.document-list{margin-top:24px}.list-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.list-header h3{margin:0;color:#2c3e50;font-size:1.2em;font-weight:600}.refresh-button{background:#f8f9fa;border:1px solid #dee2e6;border-radius:6px;padding:6px 10px;cursor:pointer;font-size:14px;transition:all .2s ease}.empty-hint{font-size:14px;color:#adb5bd}.documents-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}.document-card{background:#fff;border:1px solid #dee2e6;border-radius:8px;padding:16px;transition:all .2s ease;box-shadow:0 1px 3px #0000001a}.document-card:hover{border-color:#007bff;box-shadow:0 2px 8px #007bff26;transform:translateY(-1px)}.document-header{display:flex;align-items:flex-start;gap:12px;margin-bottom:12px}.file-icon{font-size:24px;flex-shrink:0;margin-top:2px}.document-info{flex:1;min-width:0}.document-name{font-weight:600;color:#2c3e50;margin-bottom:4px;word-break:break-word;line-height:1.4}.document-meta{font-size:12px;color:#6c757d;display:flex;align-items:center;gap:8px}.document-actions{display:flex;justify-content:flex-end;padding-top:12px;border-top:1px solid #f1f3f4}.delete-button{display:flex;align-items:center;gap:6px;padding:6px 12px;background:#f8f9fa;border:1px solid #dee2e6;border-radius:4px;color:#dc3545;cursor:pointer;font-size:13px;transition:all .2s ease}.delete-button:hover:not(:disabled){background:#dc3545;color:#fff;border-color:#dc3545}.delete-button:disabled{opacity:.6;cursor:not-allowed;background:#f8f9fa;color:#6c757d}.delete-button .spinner{animation:spin 1s linear infinite}@media (max-width: 768px){.documents-grid{grid-template-columns:1fr;gap:12px}.document-card{padding:12px}.list-header{flex-direction:column;align-items:flex-start;gap:8px}.empty-state{padding:32px 16px}.empty-icon{font-size:36px}}@media (prefers-color-scheme: dark){.document-card{background:#2d3748;border-color:#4a5568;color:#e2e8f0}.document-card:hover{border-color:#3182ce;box-shadow:0 2px 8px #3182ce40}.document-name{color:#e2e8f0}.document-meta{color:#a0aec0}.document-actions{border-color:#4a5568}.empty-state,.loading-state,.error-state{background:#2d3748;border-color:#4a5568;color:#a0aec0}.refresh-button{background:#4a5568;border-color:#718096;color:#e2e8f0}.refresh-button:hover{background:#718096}}.document-management{max-width:1200px;margin:0 auto;padding:24px;background:#f8f9fa;min-height:calc(100vh - 80px)}.page-header{text-align:center;margin-bottom:32px;padding:24px;background:#fff;border-radius:12px;box-shadow:0 2px 4px #0000001a}.page-header h1{margin:0 0 12px;color:#2c3e50;font-size:2.2em;font-weight:700;text-shadow:0 1px 2px rgba(0,0,0,.1)}.page-description{color:#6c757d;font-size:16px;line-height:1.5;max-width:600px;margin:0 auto}.section{background:#fff;border-radius:12px;padding:24px;margin-bottom:24px;box-shadow:0 2px 8px #0000001a;border:1px solid #e9ecef}.section:last-child{margin-bottom:0}.message{display:flex;align-items:center;gap:12px;padding:16px 20px;margin-bottom:24px;border-radius:8px;font-weight:500;animation:slideIn .3s ease-out;position:relative}.message.success{background:#d4edda;border:1px solid #c3e6cb;color:#155724}.message.error{background:#f8d7da;border:1px solid #f5c6cb;color:#721c24}.message-icon{font-size:18px;flex-shrink:0}.message-text{flex:1;font-size:14px;line-height:1.4}.message-close{background:none;border:none;cursor:pointer;padding:4px;color:inherit;opacity:.7;transition:opacity .2s ease;font-size:16px;line-height:1;border-radius:4px}.message-close:hover{opacity:1;background:#0000001a}@keyframes slideIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeOut{0%{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(-10px)}}@media (max-width: 768px){.document-management{padding:16px;min-height:calc(100vh - 60px)}.page-header{padding:20px 16px;margin-bottom:24px}.page-header h1{font-size:1.8em}.page-description{font-size:14px}.section{padding:16px;margin-bottom:16px;border-radius:8px}.message{padding:12px 16px;margin-bottom:16px;flex-wrap:wrap;gap:8px}.message-text{font-size:13px}}@media (max-width: 480px){.document-management{padding:12px}.page-header{padding:16px 12px}.page-header h1{font-size:1.6em}.section{padding:12px;border-radius:6px}}@media (prefers-color-scheme: dark){.document-management{background:#1a202c;color:#e2e8f0}.page-header,.section{background:#2d3748;border-color:#4a5568;box-shadow:0 2px 8px #0000004d}.page-header h1{color:#e2e8f0;text-shadow:0 1px 2px rgba(0,0,0,.3)}.page-description{color:#a0aec0}.message.success{background:#276749;border-color:#38a169;color:#c6f6d5}.message.error{background:#742a2a;border-color:#e53e3e;color:#fed7d7}.message-close:hover{background:#ffffff1a}}@media print{.document-management{background:#fff;box-shadow:none;padding:0}.page-header,.section{box-shadow:none;border:1px solid #ddd}.message{display:none}}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#0009;display:flex;justify-content:center;align-items:center;z-index:1000;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}.modal-content{background:#fff;border-radius:12px;box-shadow:0 10px 40px #0003;max-width:800px;width:90%;max-height:90vh;display:flex;flex-direction:column;overflow:hidden}.user-detail-modal{animation:modalFadeIn .2s ease-out}@keyframes modalFadeIn{0%{opacity:0;transform:scale(.95) translateY(-20px)}to{opacity:1;transform:scale(1) translateY(0)}}.modal-header{padding:20px 24px;border-bottom:2px solid #e5e7eb;display:flex;justify-content:space-between;align-items:center;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.modal-header h3{margin:0;font-size:20px;font-weight:600}.close-button{background:#fff3;border:none;color:#fff;font-size:24px;width:36px;height:36px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s}.close-button:hover{background:#ffffff4d;transform:rotate(90deg)}.modal-body{padding:24px;overflow-y:auto;flex:1}.modal-body.loading{display:flex;justify-content:center;align-items:center;min-height:200px;font-size:18px;color:#6b7280}.info-section{margin-bottom:28px}.info-section:last-child{margin-bottom:0}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.section-title{font-size:18px;font-weight:600;color:#1f2937;margin:0 0 16px;padding-bottom:8px;border-bottom:2px solid #e5e7eb}.edit-button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:8px 16px;border-radius:6px;font-size:14px;font-weight:500;cursor:pointer;transition:all .2s}.edit-button:hover{transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.info-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.info-item{display:flex;flex-direction:column}.info-item.full-width{grid-column:1 / -1}.info-item label{font-size:13px;font-weight:600;color:#6b7280;margin-bottom:6px;text-transform:uppercase;letter-spacing:.5px}.info-value{font-size:15px;color:#1f2937;padding:10px 12px;background:#f9fafb;border-radius:6px;border:1px solid #e5e7eb;min-height:40px;display:flex;align-items:center}.form-input{font-size:15px;padding:10px 12px;border:2px solid #e5e7eb;border-radius:6px;transition:all .2s;font-family:inherit}.form-input:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.form-input:disabled{background:#f3f4f6;cursor:not-allowed;opacity:.6}.form-input.error{border-color:#ef4444}.form-input.error:focus{box-shadow:0 0 0 3px #ef44441a}textarea.form-input{resize:vertical;min-height:60px}.error-text{color:#ef4444;font-size:12px;margin-top:4px;display:block}.role-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:20px;font-size:13px;font-weight:600}.role-badge.admin{background:linear-gradient(135deg,#fbbf24,#f59e0b);color:#fff}.role-badge.user{background:linear-gradient(135deg,#60a5fa,#3b82f6);color:#fff}.role-badge.trial{background:linear-gradient(135deg,#a78bfa,#8b5cf6);color:#fff}.modal-footer{padding:16px 24px;border-top:2px solid #e5e7eb;display:flex;justify-content:flex-end;gap:12px;background:#f9fafb}.save-button{background:linear-gradient(135deg,#10b981,#059669);color:#fff;border:none;padding:10px 24px;border-radius:6px;font-size:15px;font-weight:600;cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:8px}.save-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 12px #10b98166}.save-button:disabled{opacity:.6;cursor:not-allowed;transform:none}.cancel-button{background:#fff;color:#6b7280;border:2px solid #e5e7eb;padding:10px 24px;border-radius:6px;font-size:15px;font-weight:600;cursor:pointer;transition:all .2s}.cancel-button:hover:not(:disabled){background:#f3f4f6;border-color:#d1d5db}.close-modal-button{background:linear-gradient(135deg,#6b7280,#4b5563);color:#fff;border:none;padding:10px 24px;border-radius:6px;font-size:15px;font-weight:600;cursor:pointer;transition:all .2s}.close-modal-button:hover{transform:translateY(-2px);box-shadow:0 4px 12px #6b728066}.spinner{display:inline-block;animation:spin 1s linear infinite}@media (max-width: 768px){.modal-content{width:95%;max-height:95vh}.info-grid{grid-template-columns:1fr}.modal-header{padding:16px 20px}.modal-header h3{font-size:18px}.modal-body{padding:20px}.section-title{font-size:16px}}.user-management{margin-top:24px}.management-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.management-header h3{margin:0;color:#2c3e50;font-size:1.3em;font-weight:600}.header-buttons{display:flex;gap:8px;align-items:center}.create-user-button{background:#28a745;color:#fff;border:none;border-radius:6px;padding:8px 16px;cursor:pointer;font-size:14px;font-weight:500;transition:all .2s ease;display:flex;align-items:center;gap:4px}.create-user-button:hover{background:#218838;transform:translateY(-1px)}.refresh-button{background:#f8f9fa;border:1px solid #dee2e6;border-radius:6px;padding:8px 12px;cursor:pointer;font-size:14px;transition:all .2s ease}.refresh-button:hover{background:#e9ecef;transform:rotate(180deg)}.create-user-form{background:#f8f9fa;border:1px solid #dee2e6;border-radius:8px;padding:20px;margin-bottom:24px}.create-user-form h4{margin:0 0 16px;color:#2c3e50;font-size:1.1em;font-weight:600}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}.form-group{display:flex;flex-direction:column}.form-group label{margin-bottom:4px;font-weight:500;color:#495057;font-size:14px}.form-group input{padding:8px 12px;border:1px solid #ced4da;border-radius:4px;font-size:14px;transition:border-color .2s ease}.form-group input:focus{outline:none;border-color:#80bdff;box-shadow:0 0 0 2px #007bff40}.form-group input:disabled{background-color:#f8f9fa;color:#6c757d}.checkbox-label{display:flex!important;flex-direction:row!important;align-items:center;gap:8px;font-weight:500!important;color:#495057!important;margin-bottom:8px;cursor:pointer}.checkbox-label input[type=checkbox]{margin:0;cursor:pointer;width:16px;height:16px}.checkbox-text{font-size:14px;font-weight:500}.admin-checkbox-group{background:#f8f9fa;border:1px solid #e9ecef;border-radius:6px;padding:12px;margin-bottom:8px}.admin-help-text{display:block;color:#6c757d;font-size:12px;margin-top:4px;font-style:italic}.error-text{color:#dc3545;font-size:12px;margin-top:4px}.form-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:20px;border-top:1px solid #dee2e6;padding-top:16px}.create-button{background:#007bff;color:#fff;border:none;border-radius:6px;padding:10px 20px;cursor:pointer;font-size:14px;font-weight:500;transition:all .2s ease;display:flex;align-items:center;gap:4px}.create-button:hover{background:#0056b3;transform:translateY(-1px)}.create-button:disabled{background:#6c757d;cursor:not-allowed;transform:none}.cancel-button{background:#6c757d;color:#fff;border:none;border-radius:6px;padding:10px 20px;cursor:pointer;font-size:14px;font-weight:500;transition:all .2s ease}.cancel-button:hover{background:#545b62}.loading-state,.error-state{display:flex;align-items:center;justify-content:center;flex-direction:column;padding:32px 16px;text-align:center;color:#6c757d;background:#f8f9fa;border-radius:8px;border:1px solid #dee2e6}.loading-state .spinner{animation:spin 1s linear infinite;font-size:20px;margin-bottom:8px}.error-state span:first-child{font-size:24px;margin-bottom:8px}.retry-button{margin-top:12px;padding:8px 16px;background:#007bff;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:14px;transition:background-color .2s ease}.retry-button:hover{background:#0056b3}.empty-state{text-align:center;padding:48px 24px;background:#f8f9fa;border-radius:8px;border:1px solid #dee2e6}.empty-icon{font-size:48px;margin-bottom:16px;display:block}.empty-state p{margin:8px 0;color:#6c757d}.users-table-container{background:#fff;border-radius:8px;border:1px solid #dee2e6;overflow:hidden;box-shadow:0 1px 3px #0000001a}.users-table{width:100%;border-collapse:collapse}.users-table thead{background:#f8f9fa}.users-table th,.users-table td{padding:12px 16px;text-align:left;border-bottom:1px solid #dee2e6}.users-table th{font-weight:600;color:#495057;font-size:14px}.users-table tbody tr{transition:background-color .2s ease}.users-table tbody tr:hover{background:#f8f9fa}.users-table tbody tr:last-child td{border-bottom:none}.admin-row{background:#fff3cd}.admin-row:hover{background:#ffeaa7!important}.user-id{font-weight:600;color:#6c757d;font-size:14px;width:60px}.user-email{font-weight:500;color:#2c3e50;max-width:200px;word-break:break-word}.user-name{color:#495057;font-size:14px}.user-role{text-align:center}.user-actions{text-align:center;min-width:320px;display:flex;gap:4px;justify-content:center;flex-wrap:wrap;align-items:center;padding:8px 4px}.role-badge{display:inline-block;padding:4px 8px;border-radius:12px;font-size:12px;font-weight:500;text-align:center}.role-badge.admin{background:gold;color:#b8860b;border:1px solid #daa520}.role-badge.user{background:#e7f3ff;color:#06c;border:1px solid #b3d9ff}.role-badge.trial{background:#fff3e0;color:#e65100;border:1px solid #ffcc80}.toggle-admin-button{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:4px;font-size:12px;font-weight:500;cursor:pointer;transition:all .2s ease;border:1px solid transparent}.toggle-admin-button.promote{background:#28a745;color:#fff;border-color:#28a745}.toggle-admin-button.promote:hover:not(:disabled){background:#218838;border-color:#1e7e34}.toggle-admin-button.demote{background:#ffc107;color:#212529;border-color:#ffc107}.toggle-admin-button.demote:hover:not(:disabled){background:#e0a800;border-color:#d39e00}.toggle-admin-button:disabled{opacity:.6;cursor:not-allowed;background:#6c757d;color:#fff;border-color:#6c757d}.role-button{display:inline-flex;align-items:center;gap:4px;padding:6px 10px;border-radius:4px;font-size:11px;font-weight:500;cursor:pointer;transition:all .2s ease;border:1px solid transparent;white-space:nowrap}.role-button span{font-size:12px}.role-button-admin{background:gold;color:#b8860b;border-color:#daa520}.role-button-admin:hover:not(:disabled){background:#ffed4e;border-color:gold;transform:translateY(-1px);box-shadow:0 2px 8px #ffd70066}.role-button-admin:disabled{opacity:.4;cursor:not-allowed;background:#f0f0f0;color:#999;border-color:#ddd;transform:none}.role-button-user{background:#e7f3ff;color:#06c;border-color:#b3d9ff}.role-button-user:hover:not(:disabled){background:#cce5ff;border-color:#80bdff;transform:translateY(-1px);box-shadow:0 2px 8px #0066cc4d}.role-button-user:disabled{opacity:.4;cursor:not-allowed;background:#f0f0f0;color:#999;border-color:#ddd;transform:none}.role-button-trial{background:#fff3e0;color:#e65100;border-color:#ffcc80}.role-button-trial:hover:not(:disabled){background:#ffe0b2;border-color:#ffb74d;transform:translateY(-1px);box-shadow:0 2px 8px #e651004d}.role-button-trial:disabled{opacity:.4;cursor:not-allowed;background:#f0f0f0;color:#999;border-color:#ddd;transform:none}.updating-indicator{display:flex;align-items:center;justify-content:center;gap:6px;color:#6c757d;font-size:12px;font-weight:500;padding:8px}.detail-user-button{display:inline-flex;align-items:center;gap:4px;padding:6px 10px;border-radius:4px;font-size:12px;font-weight:500;cursor:pointer;transition:all .2s ease;border:1px solid #8b5cf6;background:linear-gradient(135deg,#8b5cf6,#7c3aed);color:#fff}.detail-user-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 12px #8b5cf666}.detail-user-button:disabled{opacity:.6;cursor:not-allowed;background:#6c757d;border-color:#6c757d;transform:none}.delete-user-button{display:inline-flex;align-items:center;gap:4px;padding:6px 10px;border-radius:4px;font-size:12px;font-weight:500;cursor:pointer;transition:all .2s ease;border:1px solid #dc3545;background:#dc3545;color:#fff}.delete-user-button:hover:not(:disabled){background:#c82333;border-color:#bd2130;transform:translateY(-1px)}.delete-user-button:disabled{opacity:.6;cursor:not-allowed;background:#6c757d;border-color:#6c757d;transform:none}.toggle-admin-button .spinner,.detail-user-button .spinner,.delete-user-button .spinner{animation:spin 1s linear infinite}@media (max-width: 768px){.users-table-container{overflow-x:auto}.users-table{min-width:600px}.users-table th,.users-table td{padding:8px 12px;font-size:13px}.management-header{flex-direction:column;align-items:flex-start;gap:12px}.user-email{max-width:150px}}@media (max-width: 480px){.users-table th,.users-table td{padding:6px 8px;font-size:12px}.toggle-admin-button,.role-button{padding:4px 6px;font-size:10px;gap:2px}.role-button span{font-size:11px}.role-badge{font-size:11px;padding:3px 6px}.user-actions{min-width:280px}}@media (prefers-color-scheme: dark){.users-table-container{background:#2d3748;border-color:#4a5568}.users-table thead{background:#4a5568}.users-table th{color:#e2e8f0}.users-table td{color:#e2e8f0;border-bottom-color:#4a5568}.users-table tbody tr:hover{background:#4a5568}.admin-row{background:#744210}.admin-row:hover{background:#975a16!important}.user-email{color:#e2e8f0}.user-name{color:#cbd5e0}.management-header h3{color:#e2e8f0}.empty-state,.loading-state,.error-state{background:#2d3748;border-color:#4a5568;color:#a0aec0}.refresh-button{background:#4a5568;border-color:#718096;color:#e2e8f0}.refresh-button:hover{background:#718096}}.login-form-container{display:flex;justify-content:center;align-items:center;min-height:100vh;background-color:#f5f5f5;padding:20px}.login-form{background:#fff;padding:40px;border-radius:8px;box-shadow:0 2px 10px #0000001a;width:100%;max-width:400px}.login-form h2{text-align:center;margin-bottom:30px;color:#333;font-size:24px}.form-group label{display:block;margin-bottom:8px;color:#555;font-weight:500}.form-group input{width:100%;padding:12px;border:1px solid #ddd;border-radius:4px;font-size:16px;transition:border-color .3s;box-sizing:border-box}.form-group input:focus{outline:none;border-color:#007bff}.form-group input:disabled{background-color:#f8f9fa;cursor:not-allowed}.login-button{width:100%;padding:12px;background-color:#007bff;color:#fff;border:none;border-radius:4px;font-size:16px;font-weight:500;cursor:pointer;transition:background-color .3s}.login-button:hover:not(:disabled){background-color:#0056b3}.login-button:disabled{background-color:#6c757d;cursor:not-allowed}.error-message{background-color:#f8d7da;color:#721c24;padding:12px;border:1px solid #f5c6cb;border-radius:4px;margin-bottom:20px;text-align:center}.password-change-container{display:flex;justify-content:center;align-items:center;min-height:60vh;padding:20px}.password-change-card{background:#fff;border-radius:12px;box-shadow:0 4px 6px #0000001a;padding:32px;width:100%;max-width:480px;border:1px solid #e1e5e9}.password-change-header{text-align:center;margin-bottom:24px}.password-change-header h2{margin:0 0 8px;color:#2c3e50;font-size:1.5em;font-weight:600}.password-change-header p{margin:0;color:#6c757d;font-size:14px}.password-change-form{margin-bottom:24px}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:6px;font-weight:500;color:#495057;font-size:14px}.form-group input{width:100%;padding:12px 16px;border:1px solid #ced4da;border-radius:6px;font-size:14px;transition:border-color .2s ease,box-shadow .2s ease;box-sizing:border-box}.form-group input:focus{outline:none;border-color:#80bdff;box-shadow:0 0 0 3px #007bff1a}.form-group input:disabled{background-color:#f8f9fa;color:#6c757d;cursor:not-allowed}.error-message{background:#f8d7da;color:#721c24;border:1px solid #f5c6cb;border-radius:6px;padding:12px 16px;margin-bottom:16px;font-size:14px;display:flex;align-items:center;gap:8px}.success-message{text-align:center;padding:32px}.success-icon{font-size:3em;margin-bottom:16px}.success-message h2{margin:0 0 8px;color:#28a745;font-size:1.5em;font-weight:600}.success-message p{margin:0;color:#6c757d;font-size:14px}.form-actions{display:flex;gap:12px;justify-content:flex-end;margin-top:24px;border-top:1px solid #e9ecef;padding-top:20px}.change-button{background:#007bff;color:#fff;border:none;border-radius:6px;padding:12px 24px;cursor:pointer;font-size:14px;font-weight:500;transition:all .2s ease;display:flex;align-items:center;gap:6px}.change-button:hover:not(:disabled){background:#0056b3;transform:translateY(-1px)}.change-button:disabled{background:#6c757d;cursor:not-allowed;transform:none}.cancel-button{background:#6c757d;color:#fff;border:none;border-radius:6px;padding:12px 24px;cursor:pointer;font-size:14px;font-weight:500;transition:all .2s ease}.cancel-button:hover:not(:disabled){background:#545b62}.cancel-button:disabled{opacity:.6;cursor:not-allowed}.spinner{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.password-tips{background:#f8f9fa;border:1px solid #e9ecef;border-radius:6px;padding:16px;margin-top:24px}.password-tips h4{margin:0 0 12px;color:#495057;font-size:14px;font-weight:600}.password-tips ul{margin:0;padding-left:20px;color:#6c757d;font-size:13px}.password-tips li{margin-bottom:4px}.password-tips li:last-child{margin-bottom:0}@media (max-width: 576px){.password-change-container{padding:16px}.password-change-card{padding:24px}.form-actions{flex-direction:column}.change-button,.cancel-button{width:100%;justify-content:center}}.home{padding:2rem 0;min-height:calc(100vh - 100px)}.container{max-width:1200px;margin:0 auto;padding:0 1rem}.tabs{display:flex;border-bottom:2px solid #e5e7eb;margin-bottom:2rem;gap:.5rem}.tab{padding:1rem 1.5rem;background:none;border:none;border-bottom:3px solid transparent;font-size:1rem;font-weight:500;color:#6b7280;cursor:pointer;transition:all .2s}.tab:hover{color:#3b82f6}.tab.active{color:#3b82f6;border-bottom-color:#3b82f6}.tab-content{padding:1rem 0}.qa-section h2{color:#1f2937;margin-bottom:1.5rem;font-size:1.5rem}.qa-form{background:#f9fafb;padding:1.5rem;border-radius:.5rem;border:1px solid #e5e7eb;margin-bottom:2rem}.question-input{width:100%;padding:.75rem;border:1px solid #d1d5db;border-radius:.375rem;font-size:1rem;margin-bottom:1rem;resize:vertical;font-family:inherit}.question-input:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 0 1px #3b82f6}.answer-section{background:#fff;padding:1.5rem;border-radius:.5rem;border:1px solid #e5e7eb;min-height:200px}.documents-section,.user-management-section{background:#fff;padding:2rem;border-radius:.5rem;border:1px solid #e5e7eb}.documents-section h2,.user-management-section h2{color:#1f2937;margin-bottom:1rem}.documents-section p,.user-management-section p{color:#6b7280;margin:0}.app{min-height:100vh;display:flex;flex-direction:column}.app-nav{display:flex;background:#fff;border-bottom:1px solid #e9ecef;padding:0 24px;box-shadow:0 1px 3px #0000001a}.nav-button{background:none;border:none;padding:16px 24px;font-size:14px;font-weight:500;cursor:pointer;transition:all .2s ease;border-bottom:3px solid transparent;color:#6c757d}.nav-button:hover{background:#f8f9fa;color:#495057}.nav-button.active{color:#007bff;border-bottom-color:#007bff;background:#f8f9ff}main{flex:1;padding:0;overflow-y:auto;min-height:0}#root{margin:0;padding:0;min-height:100vh}@media (max-width: 768px){.app-nav{padding:0 16px}.nav-button{padding:12px 16px;font-size:13px}}@media (prefers-color-scheme: dark){.app-nav{background:#2d3748;border-bottom-color:#4a5568}.nav-button{color:#a0aec0}.nav-button:hover{background:#4a5568;color:#e2e8f0}.nav-button.active{color:#63b3ed;border-bottom-color:#63b3ed;background:#2a4365}}