:root{--bg-deep: #171614;--bg-sidebar: #1C1A18;--bg-main: #201E1C;--bg-surface: #2A2826;--bg-surface-hover: #343230;--bg-input: #252320;--bg-user-msg: #2A2826;--border: #2A2826;--border-light: #3A3836;--border-active: #F77D0A;--text-primary: #F1ECE3;--text-secondary: #C8C4BF;--text-muted: #928C86;--accent: #F77D0A;--accent-hover: #E06E00;--accent-soft: rgba(247, 125, 10, .12);--teal: #00B2A9;--teal-soft: rgba(0, 178, 169, .1);--green: #3fb950;--green-soft: rgba(63, 185, 80, .12);--blue: #00B2A9;--blue-soft: rgba(0, 178, 169, .1);--yellow: #d29922;--yellow-soft: rgba(210, 153, 34, .12);--red: #f85149;--sidebar-width: 260px;--sources-width: 380px;--radius-sm: 12px;--radius-md: 16px;--radius-lg: 20px;--radius-full: 999px;--shadow: 0 4px 12px rgba(0, 0, 0, .5);--font: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;--font-headline: "Playfair Display", Georgia, 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.15s;flex-shrink:0}.upload-doc-chevron.open{transform:rotate(90deg)}.upload-chunks-list{padding:6px 0 6px 12px;display:flex;flex-direction:column;gap:6px}.upload-chunk-card{border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px;background:var(--bg-deep)}.upload-chunk-label{font-size:11px;font-weight:700;color:var(--text-secondary);margin-bottom:4px;text-transform:uppercase;letter-spacing:.03em}.upload-chunk-text{font-size:12px;color:var(--text-primary);line-height:1.5;max-height:120px;overflow-y:auto;white-space:pre-wrap;word-break:break-word}.tag-relevant-card{border-color:var(--accent, #4a9eff);background:color-mix(in srgb,var(--accent, #4a9eff) 8%,var(--bg-deep))}.tag-relevant-card .upload-chunk-text{max-height:300px}.tag-relevant-label{color:var(--accent, #4a9eff)!important}.drawer-body{flex:1;overflow-y:auto;padding:12px}.source-card{display:block;width:100%;text-align:left;border:1px solid var(--border);border-radius:var(--radius-md);padding:12px;background:var(--bg-surface);cursor:pointer;transition:all .15s;margin-bottom:8px;color:var(--text-primary);font-family:var(--font)}.source-card:hover{border-color:var(--border-light);background:var(--bg-surface-hover)}.source-card.active{border-color:var(--accent);background:var(--accent-soft)}.source-card-title{font-size:13px;font-weight:600;margin-bottom:4px;display:flex;justify-content:space-between;align-items:flex-start;gap:8px}.source-card-index{font-size:11px;color:var(--text-secondary);flex-shrink:0}.source-card-index-tag{display:inline-block;font-size:10px;font-weight:500;color:var(--teal);background:var(--teal-soft);border-radius:var(--radius-full);padding:1px 8px;margin-bottom:4px;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.source-card-score{font-size:11px;color:var(--text-secondary);margin-bottom:6px}.source-card-snippet{font-size:12px;color:var(--text-primary);line-height:1.5;max-height:60px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical}.doc-detail{padding:4px;display:flex;flex-direction:column;flex:1;min-height:0}.doc-detail .pdf-viewer{flex:1;min-height:0}.doc-detail-meta{font-size:12px;color:var(--text-muted);margin-bottom:16px;display:flex;flex-wrap:wrap;gap:8px}.doc-detail-meta span{padding:2px 8px;background:var(--bg-surface);border-radius:var(--radius-sm)}.doc-detail-section{margin-bottom:16px}.doc-detail-section h3{font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);margin-bottom:8px;font-weight:500}.doc-detail-content{font-size:13px;line-height:1.6;color:var(--text-secondary);white-space:pre-wrap;word-break:break-word;max-height:400px;overflow-y:auto;padding:12px;background:var(--bg-main);border-radius:var(--radius-md);border:1px solid var(--border)}.doc-detail-content mark{background:var(--yellow-soft);color:var(--yellow);border-radius:2px;padding:0 2px}.doc-detail-tabs{display:flex;gap:0;margin-bottom:12px;border-bottom:1px solid var(--border)}.doc-detail-tab{flex:1;padding:6px 12px;font-size:13px;font-weight:600;font-family:var(--font);color:var(--text-secondary);background:none;border:none;border-bottom:2px solid transparent;cursor:pointer;transition:all .15s}.doc-detail-tab:hover{color:var(--text-primary)}.doc-detail-tab.active{color:var(--accent);border-bottom-color:var(--accent)}.pdf-viewer{display:flex;flex-direction:column;gap:0}.pdf-toolbar{display:flex;align-items:center;justify-content:center;gap:8px;padding:6px 0;border-bottom:1px solid var(--border);flex-shrink:0}.pdf-nav-btn{padding:4px 10px;border-radius:var(--radius-sm);border:1px solid var(--border-light);background:var(--bg-surface);color:var(--text-primary);font-size:12px;cursor:pointer;font-family:var(--font);transition:background .15s}.pdf-nav-btn:hover:not(:disabled){background:var(--bg-surface-hover)}.pdf-nav-btn:disabled{opacity:.4;cursor:not-allowed}.pdf-goto-highlight{font-size:11px;color:var(--accent);border-color:var(--accent)}.pdf-page-info{font-size:12px;color:var(--text-secondary);min-width:60px;text-align:center}.pdf-canvas-wrapper{position:relative;overflow:auto;flex:1;min-height:0}.pdf-canvas{display:block;width:100%;height:auto}.pdf-highlight-canvas{position:absolute;top:0;left:0;width:100%;height:auto;pointer-events:none}.pdf-viewer-status{display:flex;align-items:center;justify-content:center;gap:8px;padding:32px 16px;color:var(--text-muted);font-size:13px}.pdf-viewer-error{color:var(--red)}.pdf-spinner{width:16px;height:16px;border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.sources-drawer.pdf-active{width:560px}.pin-btn{display:inline-flex;align-items:center;gap:4px;padding:4px 10px;border-radius:var(--radius-sm);border:1px solid var(--border-light);background:transparent;color:var(--text-secondary);font-size:12px;cursor:pointer;transition:all .15s;font-family:var(--font)}.pin-btn:hover{background:var(--bg-surface-hover)}.pin-btn.pinned{background:var(--yellow-soft);border-color:var(--yellow);color:var(--yellow)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:100;animation:fadeIn .15s}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal{background:var(--bg-sidebar);border:1px solid var(--border-light);border-radius:var(--radius-lg);width:520px;max-height:80vh;overflow-y:auto;box-shadow:var(--shadow);animation:scaleIn .15s}@keyframes scaleIn{0%{transform:scale(.96);opacity:0}to{transform:scale(1);opacity:1}}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border)}.modal-header h2{font-family:var(--font-headline);font-size:18px;font-weight:600}.modal-body{padding:20px;display:flex;flex-direction:column;gap:20px}.settings-group{display:flex;flex-direction:column;gap:12px}.settings-group-title{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);font-weight:600;padding-bottom:4px;border-bottom:1px solid var(--border)}.setting-row{display:flex;flex-direction:column;gap:4px}.setting-label{font-size:13px;color:var(--text-secondary);font-weight:500}.setting-select,.setting-textarea{background:var(--bg-input);border:1px solid var(--border-light);border-radius:var(--radius-md);color:var(--text-primary);font-family:var(--font);font-size:13px;padding:8px 12px;transition:border-color .15s;outline:none;width:100%}.setting-select:focus,.setting-textarea:focus{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-soft)}.setting-select option{background:var(--bg-surface);color:var(--text-primary)}.setting-textarea{resize:vertical;min-height:80px}.setting-range{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:6px;border-radius:var(--radius-full);background:var(--border-light);outline:none;margin-top:4px}.setting-range::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:16px;height:16px;border-radius:50%;background:var(--accent);cursor:pointer;border:none}.setting-range::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:var(--accent);cursor:pointer;border:none}.setting-range:hover::-webkit-slider-thumb{background:var(--accent-hover)}.setting-range:hover::-moz-range-thumb{background:var(--accent-hover)}.setting-toggle{display:flex;align-items:center;justify-content:space-between}.toggle-switch{position:relative;width:40px;height:22px;cursor:pointer;display:inline-block}.toggle-switch input{opacity:0;width:0;height:0;position:absolute}.toggle-track{position:absolute;top:0;right:0;bottom:0;left:0;background:var(--border-light);border-radius:var(--radius-full);transition:background .2s}.toggle-switch input:checked+.toggle-track{background:var(--accent)}.toggle-track:after{content:"";position:absolute;width:16px;height:16px;left:3px;top:3px;background:#fff;border-radius:50%;transition:transform .2s}.toggle-switch input:checked+.toggle-track:after{transform:translate(18px)}.modal-footer{display:flex;justify-content:flex-end;gap:8px;padding:16px 20px;border-top:1px solid var(--border)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 16px;border-radius:var(--radius-md);font-family:var(--font);font-size:13px;font-weight:500;border:none;cursor:pointer;transition:all .15s}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent);color:#fff}.btn-primary:not(:disabled):hover{background:var(--accent-hover)}.btn-secondary{background:var(--bg-surface);color:var(--text-primary);border:1px solid var(--border-light)}.btn-secondary:not(:disabled):hover{background:var(--bg-surface-hover)}.validation-section{padding:12px;border-radius:var(--radius-md);border:1px solid var(--border);background:var(--bg-main)}.validation-status{display:flex;align-items:center;gap:6px;font-weight:500;font-size:13px;margin-bottom:8px}.validation-status.ok{color:var(--green)}.validation-status.fail{color:var(--red)}.validation-details{font-size:12px;color:var(--text-secondary);line-height:1.5}.upload-info{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;background:var(--bg-surface);border-radius:var(--radius-full);font-size:12px;color:var(--text-secondary);margin-top:4px}.citation-group{display:inline;vertical-align:baseline;font-size:0;margin-left:1px;white-space:nowrap}.citation-btn{display:inline-block;border:none;background:none;color:var(--text-muted);padding:0 1px;margin:0;cursor:pointer;font-size:9px;line-height:1;vertical-align:super;font-family:var(--font);font-weight:500;transition:color .15s}.citation-sep{font-size:8px;color:var(--text-muted);vertical-align:super}.citation-btn:hover{color:var(--accent)}.kv-list{display:grid;grid-template-columns:auto 1fr;gap:4px 12px;font-size:12px}.kv-key{color:var(--text-muted);font-weight:500;text-transform:capitalize}.kv-value{color:var(--text-secondary);word-break:break-word}.activity-list{list-style:none;display:flex;flex-direction:column;gap:4px}.activity-item{font-size:12px;color:var(--text-secondary);padding:4px 0;border-bottom:1px solid var(--border)}.activity-item:last-child{border-bottom:none}@media(max-width:768px){.sidebar{display:none}.sources-drawer{position:fixed;right:0;top:0;bottom:0;z-index:50;box-shadow:var(--shadow)}}