/* Folder labels stay outside the collapsible child lists. */
.kb-pdf-tools[hidden],.kb-pdf-tools>div[hidden]{display:none}.kb-pdf-scroll.kb-pdf-native{padding:0;display:flex;flex-direction:column}.kb-pdf-native>.kb-pdf-frame{flex:1;display:block;width:100%;min-height:300px;border:0}
.kb-tree-file{display:flex;align-items:flex-start;gap:2px;min-width:0}.kb-tree-file>.kb-file{flex:1;min-width:0;width:auto}.kb-tree-row>.kb-folder>span:not(.kb-folder-symbol){min-width:0;overflow-wrap:anywhere;flex:1}.kb-tree-more{flex:0 0 28px;width:28px;height:34px;display:grid;place-items:center;border:0;border-radius:6px;background:transparent;color:var(--muted);font-family:inherit;font-size:20px;line-height:1;cursor:pointer;padding:0}.kb-tree-more:hover,.kb-tree-more[aria-expanded="true"]{background:var(--soft);color:var(--deep)}.kb-tree-more:focus-visible{outline:2px solid var(--focus);outline-offset:-2px}.kb-tree-menu{z-index:115}.kb-tree-menu[hidden]{display:none}.kb-setting-target{font-size:13px;font-weight:600;line-height:1.8;margin:0 0 18px;overflow-wrap:anywhere;color:var(--ink)}.kb-extra-fields{margin:18px 0;padding:12px;border:1px solid var(--line);border-radius:8px}.kb-extra-fields summary{font-size:12px;color:var(--muted);cursor:pointer}.kb-extra-fields label{margin-top:12px}@media(pointer:coarse){.kb-tree-more{flex-basis:34px;width:34px;height:38px}}
.kb-layout{grid-template-columns:300px minmax(0,1fr);gap:24px}.kb-sidebar{padding:13px 10px;max-height:calc(100dvh - 170px);overscroll-behavior:contain;scrollbar-gutter:stable}.kb-tree-heading{display:flex;justify-content:space-between;align-items:center;margin:1px 9px 10px;gap:10px}.kb-tree-heading .nav-label{margin:0}.kb-tree-heading>span:last-child{font-size:11px;color:var(--muted)}
.kb-tree,.kb-tree-group{list-style:none;margin:0;padding:0}.kb-tree-group{margin-left:12px;padding-left:6px;border-left:1px solid var(--line)}.kb-tree-group[hidden]{display:none!important}.kb-tree-row{display:flex;align-items:flex-start;gap:1px;margin-top:3px;min-width:0}.kb-folder-toggle{flex:0 0 23px;min-height:36px;padding:7px 0;border:0;border-radius:6px;background:transparent;color:var(--muted);font-size:13px;cursor:pointer}.kb-folder-toggle:hover:not(:disabled){background:var(--bg);color:var(--green)}.kb-folder-toggle:disabled{cursor:default;opacity:.5}.kb-tree-row>.kb-folder{flex:1;min-width:0;width:auto;padding:8px 7px 8px 3px;gap:6px;min-height:36px;align-items:flex-start}.kb-tree-row .kb-folder-symbol{flex:0 0 14px;color:var(--green)}.kb-folder small{flex-shrink:0;margin-top:2px}.kb-root{margin-bottom:5px}.kb-file{display:flex;align-items:flex-start;gap:7px;width:100%;min-width:0;min-height:35px;border:0;border-radius:7px;padding:8px 7px;background:transparent;color:var(--muted);text-align:left;line-height:1.6;font-size:11.5px}.kb-file:hover,.kb-file.active{background:var(--bg);color:var(--green)}.kb-file.active{box-shadow:inset 2px 0 var(--green);font-weight:600}.kb-file-name{flex:1;min-width:0;white-space:normal;overflow-wrap:anywhere;word-break:normal}.kb-tree-format{flex:0 0 27px;font-size:8px;line-height:18px;text-align:center;border:1px solid var(--line);border-radius:4px;background:var(--surface);color:var(--muted);font-weight:500}.kb-tree-pending{flex-shrink:0;color:var(--red);font-size:11px}.kb-tree-empty{padding:9px 8px;font-size:11px;color:var(--muted)}.kb-tree-hint{font-size:10px;color:var(--muted);line-height:1.8;padding:8px 8px 0;margin:8px 0 0;border-top:1px solid var(--line)}
.kb-breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:4px 8px}.kb-breadcrumb button{background:transparent;border:0;padding:2px 0;color:var(--green);font:inherit;text-align:left;line-height:1.8;overflow-wrap:anywhere}.kb-breadcrumb button:hover{text-decoration:underline}.kb-breadcrumb [aria-current="page"]{color:var(--ink)}.kb-summary{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:5px 14px}.kb-summary .text-button{font-size:12px}.kb-original-name{font-size:12px;line-height:1.8;color:var(--muted);margin:0 0 7px;overflow-wrap:anywhere}.kb-document-selected{border-color:var(--green)}.kb-sidebar button:focus-visible,.kb-breadcrumb button:focus-visible{outline:2px solid var(--green);outline-offset:-2px}
@media(max-width:1150px){.kb-layout{grid-template-columns:260px minmax(0,1fr);gap:18px}}
@media(max-width:760px){.kb-layout{grid-template-columns:minmax(0,1fr);gap:18px}.kb-sidebar{position:static;max-height:330px}.kb-file{font-size:12px}.kb-file-name{line-height:1.65}.kb-original-name{font-size:11px}}

/* Small citation snapshot; full text is read in the course library. */
#modal.citation-dialog{width:min(520px,calc(100% - 32px));padding:20px;max-height:75dvh}#modal.citation-dialog .dialog-header{margin-bottom:12px}#modal.citation-dialog .dialog-header h2{font-size:16px;line-height:1.6;overflow-wrap:anywhere}.citation-caption{font-size:11px;line-height:1.8;color:var(--muted);margin:8px 0 12px}.citation-excerpt{font-size:var(--chat-secondary-size,11px);line-height:1.8;white-space:pre-wrap;overflow-wrap:anywhere;max-height:28dvh;overflow:auto}.citation-ellipsis{color:var(--muted);line-height:1.4;margin:4px 0}.citation-highlight{background:#dfecdf;color:#244f3e;font-weight:600;padding:1px 0;box-decoration-break:clone;-webkit-box-decoration-break:clone}[data-theme=dark] .citation-highlight{background:#365749;color:#e4f2e8}
.kb-reference-return{display:flex;align-items:center;gap:14px;flex-wrap:wrap;position:sticky;top:0;z-index:2;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:10px 14px;margin-bottom:18px}.kb-reference-return span{color:var(--muted);font-size:12px}#kb-reader[hidden],#kb-documents[hidden]{display:none!important}.kb-reader{border:1px solid var(--line);border-radius:12px;background:var(--surface);overflow:hidden}.kb-reader header{padding:18px 20px 12px;border-bottom:1px solid var(--line)}.kb-reader h2{font-size:18px;line-height:1.6;overflow-wrap:anywhere}.kb-reader header p{font-size:11px;color:var(--muted);line-height:1.8;margin:4px 0 8px;overflow-wrap:anywhere}.kb-reader-actions{display:flex;gap:18px;flex-wrap:wrap}.kb-reader-actions button:disabled{color:var(--muted);cursor:default}.kb-citation-status{padding:12px 20px;color:var(--muted);font-size:12px;line-height:1.8;border-bottom:1px solid var(--line);margin:0}.kb-reader-text{white-space:pre-wrap;overflow-wrap:anywhere;font-size:var(--chat-font-size,15px);line-height:1.95;padding:22px;max-height:60dvh;overflow:auto;overscroll-behavior:contain;scroll-padding:60px}.kb-reader-text:focus-visible{outline:2px solid var(--focus);outline-offset:-2px}.kb-reader-error{padding:20px;border:1px solid var(--line);border-radius:12px;color:var(--red);font-size:13px;line-height:1.9}
.citation-passages{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:8px}.citation-passages button{font-size:12px;padding:4px 8px;border-radius:5px}.citation-passages button[aria-pressed=true]{background:var(--soft);color:var(--deep)}.citation-passages button:focus-visible{outline:2px solid var(--green);outline-offset:2px}
@media(max-width:760px){.kb-from-citation .kb-sidebar{max-height:160px}.kb-reader header{padding:15px}.kb-reader-text{padding:16px;max-height:58dvh}.kb-reader h2{font-size:16px}.kb-reference-return{gap:8px;padding:10px}.kb-reference-return span{font-size:11px}#modal.citation-dialog{padding:17px}.citation-excerpt{max-height:26dvh}}

#kb-citation-highlight:focus{outline:none}#kb-reader{scroll-margin-top:82px}
.kb-reader-text{white-space:normal;font-size:var(--chat-font-size,12px);line-height:1.9;scroll-padding:30px}
.kb-reader-text>p,.document-preview>p{margin:0 0 .85em;text-indent:2em;text-align:justify;text-align-last:start}
.kb-reader-text>h3,.document-preview>h3{font-size:1.15em;font-weight:650;line-height:1.65;margin:1.25em 0 .6em;text-indent:0;color:var(--ink)}
.kb-reader-text>h3:first-child,.document-preview>h3:first-child{margin-top:0}
.kb-text-list{list-style:none;margin:.6em 0 1em;padding:0}
.kb-text-list>li{padding-inline-start:2em;margin:.3em 0 .3em calc(var(--kb-depth,0)*1em);text-indent:-2em;text-align:start}
.kb-reader-text>.kb-text-row,.document-preview>.kb-text-row{margin:.35em 0;text-indent:0;text-align:start}
.kb-text-plain{white-space:pre-wrap;overflow-wrap:anywhere}
.kb-reader-text>.kb-text-empty{color:var(--muted);text-indent:0;text-align:start}
.document-preview:has(>p,>h3,>.kb-text-list){white-space:normal}
.kb-view-tabs{display:flex;gap:3px;padding:3px;border:1px solid var(--line);border-radius:9px;background:var(--bg)}.kb-view-tabs button{border:0;border-radius:6px;padding:6px 12px;background:transparent;color:var(--muted);font:inherit;font-size:12px;cursor:pointer}.kb-view-tabs button[aria-pressed="true"]{background:var(--surface);color:var(--accent,#567768);box-shadow:0 1px 4px #0001}.kb-reader-actions{align-items:center;gap:12px}.kb-pdf-frame{display:block;width:100%;height:68dvh;min-height:350px;border:0;background:#e8eae7;color-scheme:light}.kb-preview-status{padding:44px 22px;text-align:center;line-height:1.9;color:var(--muted)}.kb-preview-status strong{color:var(--text);font-size:15px}.kb-preview-status p{font-size:13px}.kb-text-page{display:block;padding:12px 0 5px;margin-top:12px;border-bottom:1px solid var(--line);font-weight:650;color:var(--accent,#567768);font-size:13px}.kb-reader [hidden]{display:none!important}#kb-reader:fullscreen,#kb-reader.kb-reader-expanded{background:var(--surface);overflow:auto;padding:0;border-radius:0;overscroll-behavior:contain}#kb-reader.kb-reader-expanded{position:fixed;inset:10px;z-index:110;box-shadow:0 0 0 30px #0009;border:1px solid var(--line);border-radius:12px}body:has(.kb-reader-expanded){overflow:hidden}#kb-reader:fullscreen .kb-reader,.kb-reader-expanded .kb-reader{border:0}#kb-reader:fullscreen .kb-pdf-frame,.kb-reader-expanded .kb-pdf-frame{height:calc(100dvh - 210px)}#kb-reader:fullscreen .kb-reader-text,.kb-reader-expanded .kb-reader-text{max-height:calc(100dvh - 210px)}
@media(max-width:760px){.kb-pdf-frame{height:65dvh;min-height:320px}.kb-reader-actions{gap:10px}.kb-view-tabs button{padding:6px 10px}#kb-reader.kb-reader-expanded{inset:0;border-radius:0}.kb-reader-expanded .kb-pdf-frame,#kb-reader:fullscreen .kb-pdf-frame{height:calc(100dvh - 250px)}}
.kb-pdf-tools{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 14px;background:var(--surface);border-bottom:1px solid var(--line);font-size:12px;color:var(--muted)}.kb-pdf-tools>div{display:flex;gap:6px;align-items:center}.kb-pdf-tools button{border:1px solid var(--line);border-radius:6px;background:var(--surface);color:var(--text);padding:4px 9px;font:inherit;cursor:pointer}.kb-pdf-tools button:hover{background:var(--surface-soft,#eef2ed)}.kb-pdf-scroll{position:relative;height:64dvh;min-height:300px;overflow:auto;overscroll-behavior:contain;background:#dde2dc;padding:18px;scroll-padding:18px;scrollbar-gutter:stable}.kb-pdf-page{position:relative;box-sizing:content-box;background:#fff;margin:0 auto 18px;box-shadow:0 2px 10px #0002;flex:none}.kb-pdf-page::before{content:attr(data-pdf-page);position:absolute;inset:12px auto auto 12px;font:12px system-ui;color:#8b968e}.kb-pdf-page canvas{position:relative;display:block;background:#fff}.kb-pdf-page[data-rendered="true"]::before{display:none}#kb-reader:fullscreen .kb-pdf-scroll,.kb-reader-expanded .kb-pdf-scroll{height:calc(100dvh - 260px)}@media(max-width:760px){.kb-pdf-scroll{height:61dvh;padding:12px}.kb-pdf-tools{padding:8px 10px;flex-wrap:wrap}.kb-reader-expanded .kb-pdf-scroll,#kb-reader:fullscreen .kb-pdf-scroll{height:calc(100dvh - 300px)}}
.kb-page.is-reading :is(.kb-toolbar,.kb-folder-note,.kb-storage-note,.kb-summary>span){display:none}
.kb-bulk-filters{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px}.kb-bulk-filters label{min-width:0;font-size:12px}.kb-bulk-filters :is(input,select){margin-top:6px}
.kb-bulk-tools{display:flex;gap:8px 16px;align-items:center;flex-wrap:wrap;margin:10px 0}.kb-bulk-tools>span{margin-left:auto;font-size:11px}
.kb-bulk-list{max-height:250px;overflow:auto;overscroll-behavior:contain;border:1px solid var(--line);border-radius:9px;padding:5px 10px;margin-bottom:10px}
.kb-bulk-choice{display:flex;align-items:flex-start;gap:10px;margin:0;padding:10px 4px;border-bottom:1px solid var(--line);font-weight:400;cursor:pointer}.kb-bulk-choice:last-child{border-bottom:0}.kb-bulk-choice>input{width:16px;height:16px;flex:0 0 16px;margin:3px 0 0;accent-color:var(--green)}.kb-bulk-choice>span{min-width:0}.kb-bulk-choice strong{font-size:12px;line-height:1.7;font-weight:500;overflow-wrap:anywhere}.kb-bulk-choice small{display:block;font-size:10px;line-height:1.7;color:var(--muted);overflow-wrap:anywhere}
#kb-bulk-groups[hidden]{display:none}#kb-bulk-error:empty{display:none}
@media(max-width:600px){.kb-bulk-filters{grid-template-columns:1fr;gap:0}.kb-bulk-tools>span{width:100%;margin-left:0}.kb-bulk-list{max-height:210px}}