.lib-workspace{max-width:1260px;margin:0 auto;padding:12px 0 28px;color:#17314f}.lib-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:0 0 24px}.lib-heading h1{font-size:clamp(30px,3vw,42px);letter-spacing:-1.4px;margin:3px 0}.lib-heading p{margin:5px 0;color:#60718a}.lib-eyebrow{font-size:11px;font-weight:800;letter-spacing:1.2px}.lib-workspace button,.lib-dialog button{cursor:pointer}.lib-tabs{display:flex;gap:6px;flex-wrap:wrap;border-bottom:1px solid #dce4ef;padding-bottom:14px;margin-bottom:20px}.lib-tabs button{background:transparent;border:0;padding:9px 13px;border-radius:9px;color:#5b6d87;font-weight:650}.lib-tabs button.active{color:#195acf;background:#e9f1ff}.lib-filters{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:24px}.lib-search{display:flex;align-items:center;gap:10px;flex:1 1 310px;background:white;border:1px solid #dae3f0;border-radius:12px;padding:0 14px}.lib-search span{font-size:25px;color:#7085a4}.lib-search input{border:0;min-width:0;width:100%;background:none;padding:12px 0;outline-offset:5px}.lib-filters select{width:auto;max-width:190px;min-height:43px;border-radius:10px;padding:8px 30px 8px 10px;border:1px solid #dae3f0;background:white}.lib-view-switch{display:flex;border:1px solid #dae3f0;border-radius:10px;overflow:hidden}.lib-view-switch button{border:0;background:white;padding:10px;color:#536780}.lib-view-switch .active{background:#e9f1ff;color:#195acf}.lib-section-title{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:0 0 18px}.lib-section-title h2{font-size:21px;letter-spacing:-.4px;margin:0}.lib-section-title p{color:#70809a;font-size:13px;margin-bottom:0}.lib-section-title>span{color:#70809a;font-size:13px}.lib-class-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(265px,1fr));gap:20px}.lib-class-card,.lib-project-card{border:1px solid #e1e8f2;border-radius:18px;background:white;box-shadow:0 4px 16px #21395606;padding:24px;text-align:left;position:relative;overflow:hidden;border-top:4px solid var(--lib-color)}.lib-class-card:hover,.lib-resource:hover{box-shadow:0 8px 24px #21395612}.lib-class-symbol{width:46px;height:46px;display:grid;place-items:center;border-radius:12px;background:color-mix(in srgb,var(--lib-color) 13%,white);color:var(--lib-color);font-weight:800;font-size:18px}.lib-class-card h3,.lib-project-card h3{font-size:21px;margin:16px 0 6px}.lib-class-card p,.lib-project-card p{color:#6a7d94;font-size:14px;margin:0 0 15px}.lib-class-previews{display:flex;gap:8px;min-height:70px}.lib-class-previews>span{flex:1;min-width:0;display:flex;flex-direction:column;gap:7px;background:#f4f7fc;border-radius:8px;padding:10px;font-size:17px;color:var(--lib-color)}.lib-class-previews small{font-size:10px;color:#5d7089;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.lib-class-arrow{position:absolute;right:22px;top:28px;color:var(--lib-color);font-size:23px}.lib-project-open{border:0;background:none;padding:0;width:100%;text-align:left}.lib-project-symbol{font-size:32px;color:var(--lib-color)}.lib-project-card small{color:#496582}.lib-resource-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(235px,1fr));gap:18px}.lib-resource{background:white;border:1px solid #e0e7f0;border-radius:15px;overflow:hidden;display:flex;flex-direction:column;min-width:0}.lib-cover{border:0;padding:0;display:block;width:100%;background:none}.lib-art{height:140px;background:#eaf1ff;display:grid;place-content:center;position:relative;color:#3970ce;overflow:hidden}.lib-art>span{font-size:36px;font-weight:750;letter-spacing:-1px}.lib-art small{position:absolute;bottom:12px;left:14px;font-size:11px;font-weight:750;letter-spacing:.3px}.lib-art img{width:100%;height:100%;position:absolute;inset:0;object-fit:cover}.lib-art.type-pdf{background:#fff1ec;color:#bc613e}.lib-art.type-spreadsheet{background:#e4f6ef;color:#26795c}.lib-art.type-presentation{background:#fff4de;color:#b27b19}.lib-art.type-image{background:#eef1f7;color:#66728b}.lib-art.type-document{background:#f0ebfa;color:#815db3}.lib-resource-info{padding:14px 15px 10px;display:flex;flex-direction:column;flex:1}.lib-card-top{display:flex;justify-content:space-between;align-items:center;gap:6px}.lib-badge{font-size:10px;font-weight:650;color:#56718b;background:#f1f5f9;padding:4px 7px;border-radius:5px}.lib-badge.private{color:#85536a;background:#faedf4}.lib-star{padding:0;background:none;border:0;color:#7e8ea6;font-size:21px;min-width:30px;min-height:30px}.lib-star.active{color:#d4a133}.lib-resource h3{font-size:16px;margin:9px 0 6px;overflow-wrap:anywhere;line-height:1.35}.lib-members{font-size:12px;color:#72839a;margin:0 0 12px;min-height:16px}.lib-tags{display:flex;flex-wrap:wrap;gap:4px;margin-bottom:10px}.lib-tags span{font-size:10px;color:#627491;background:#f1f5fa;border-radius:4px;padding:4px 6px}.lib-resource footer{border-top:1px solid #edf1f6;padding-top:8px;display:flex;gap:7px;flex-wrap:wrap;margin-top:auto}.lib-resource footer button{background:none;border:0;padding:4px 0;color:#627491;font-size:11px;min-height:30px}.lib-resource footer .lib-use{color:#2468d4;font-weight:750;margin-left:auto}.lib-list{display:flex;flex-direction:column;gap:10px}.lib-list .lib-resource{display:grid;grid-template-columns:105px 1fr}.lib-list .lib-art{height:100%;min-height:115px}.lib-list .lib-resource-info{padding:10px 17px}.lib-list h3{margin:0 0 5px}.lib-list .lib-card-top{float:right;align-self:flex-end}.lib-list .lib-members{margin-bottom:7px}.lib-list .lib-tags{margin-bottom:6px}.lib-list footer{justify-content:flex-start}.lib-list footer .lib-use{margin-left:0}.lib-empty{text-align:center;padding:55px 20px;background:#f4f7fc;border:1px dashed #cad8ed;border-radius:16px}.lib-empty>span{font-size:40px;color:#7a96bc}.lib-empty h3{margin:15px 0 8px}.lib-empty p{color:#6e8199}.lib-storage{font-size:12px;color:#7889a0;margin-top:26px}.lib-storage summary{cursor:pointer}.lib-storage p{max-width:750px}.lib-dialog{width:min(620px,calc(100vw - 30px));max-height:88dvh;padding:0;border:1px solid #dbe5f4;border-radius:18px;color:#17314f;box-shadow:0 20px 90px #15305044}.lib-dialog::backdrop{background:#1b345455;backdrop-filter:blur(3px)}.lib-dialog>header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #e7edf6;padding:18px 22px;position:sticky;top:0;background:white;z-index:1}.lib-dialog h2{font-size:21px;margin:0}.lib-close{border:0;background:#f1f5fa;border-radius:50%;width:32px;height:32px;font-size:22px;color:#58718d}.lib-dialog form,.lib-dialog>p,.lib-add-options{padding:20px 22px}.lib-dialog form>label{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:650;margin-bottom:15px}.lib-dialog input:not([type=checkbox]):not([type=radio]),.lib-dialog textarea,.lib-dialog select{width:100%;border:1px solid #d7e1ef;border-radius:9px;padding:10px;font-size:14px;min-height:42px}.lib-dialog small{display:block;color:#7586a0;font-size:12px;margin:0 0 14px}.lib-dialog details{border:1px solid #e2e9f2;border-radius:10px;padding:12px;margin-bottom:15px}.lib-dialog details summary{font-size:13px;cursor:pointer}.lib-dialog h3{font-size:13px;margin:13px 0 7px}.lib-checks{display:flex;flex-wrap:wrap;gap:8px;max-height:210px;overflow:auto;padding:3px}.lib-checks label{display:flex;align-items:center;gap:6px;background:#f3f6fb;border-radius:7px;padding:8px;font-size:12px}.lib-checks input{margin:0;accent-color:#326de6}.lib-dialog footer{display:flex;justify-content:flex-end;gap:10px;margin-top:18px;padding-top:12px;border-top:1px solid #edf1f7}.lib-dialog>footer{padding:14px 22px}.lib-dialog footer button,.lib-dialog footer a{border:1px solid #dce5f2;background:white;border-radius:9px;padding:9px 14px;font-size:13px}.lib-dialog .primary,.lib-heading .primary,.lib-section-title .primary{background:#326de6;color:white;border:0;padding:12px 18px;border-radius:10px;font-weight:700}.lib-dialog footer .danger{color:#a35c66;margin-right:auto}.lib-form-error{color:#ad4f63;font-size:13px}.lib-add-options{display:grid;grid-template-columns:1fr 1fr;gap:15px}.lib-add-options button{padding:30px 12px;border:1px solid #dce5f3;border-radius:12px;background:#f4f7fc;font-weight:700;color:#3466b8}.lib-preview{padding:15px;min-height:200px}.lib-preview img{display:block;max-width:100%;max-height:60vh;margin:auto}.lib-preview iframe{width:100%;height:60vh;border:0}.lib-colors{display:flex;gap:12px}.lib-colors label{cursor:pointer}.lib-colors input{position:absolute;opacity:0}.lib-colors span{display:grid;place-items:center;background:var(--lib-color);width:30px;height:30px;border-radius:50%;color:transparent}.lib-colors input:checked+span{color:white;outline:3px solid #dce6f8;outline-offset:3px}.lib-archived{padding:15px;background:white;display:flex;justify-content:space-between;border:1px solid #e0e7f0;border-radius:10px}.lib-dialog :focus-visible,.lib-workspace :focus-visible{outline:3px solid #92b8f1;outline-offset:3px}@media(max-width:650px){.lib-heading{align-items:flex-start;gap:10px}.lib-heading .primary{font-size:12px;padding:11px}.lib-heading p:not(.lib-eyebrow){font-size:13px}.lib-tabs{gap:3px}.lib-tabs button{font-size:12px;padding:8px}.lib-filters{gap:8px}.lib-search{flex-basis:100%}.lib-filters select{flex:1;max-width:none;min-width:0;font-size:12px}.lib-view-switch{width:100%}.lib-view-switch button{flex:1}.lib-resource-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.lib-art{height:115px}.lib-resource-info{padding:10px}.lib-resource h3{font-size:14px}.lib-badge{font-size:9px}.lib-class-grid{grid-template-columns:1fr}.lib-list{display:flex}.lib-list .lib-resource{grid-template-columns:72px 1fr}.lib-list .lib-art>span{font-size:23px}.lib-list .lib-art small{font-size:9px;left:6px}.lib-add-options{grid-template-columns:1fr}.lib-section-title{flex-wrap:wrap}.lib-workspace{padding-top:0}}

.lib-dialog [hidden]{display:none!important}
.lib-dialog{max-width:calc(100vw - 30px)}
@media(max-width:760px){body:has(.lib-workspace) .topbar .nav{flex-wrap:nowrap;gap:10px;justify-content:space-between}body:has(.lib-workspace) .topbar .nav button{font-size:12px;flex-shrink:0;padding-left:2px;padding-right:2px}}
/* Biblioteca 2.1: classes are browsable sections, not another navigation layer. */
.lib-heading{margin-bottom:18px}.lib-heading h1{font-size:34px}.lib-tabs{margin-bottom:16px;padding-bottom:10px}.lib-filters{margin-bottom:10px}.lib-filters select{max-width:170px;font-size:12px}.lib-search{flex-basis:100%;max-width:none}.lib-drop-hint{font-size:12px;color:#72839a;margin:8px 0 20px}.lib-workspace.is-file-drop{outline:3px dashed #326de6;outline-offset:10px;background:#edf4ff}.lib-class-sections{display:flex;flex-direction:column;gap:30px}.lib-class-section{border-left:4px solid var(--lib-color);padding-left:18px}.lib-class-section>header{display:flex;justify-content:space-between;align-items:center;gap:14px;margin-bottom:14px}.lib-class-section>header>button{display:flex;gap:12px;align-items:center;background:none;border:0;color:inherit;padding:0;text-align:left}.lib-class-section h2{margin:0 0 3px;font-size:21px}.lib-class-section small{color:#698099;font-size:12px}.lib-class-section>header>div{display:flex;gap:8px;flex-wrap:wrap}.lib-class-section>header>div button,.lib-show-more{border:1px solid #d8e3f2;background:white;color:#3466b8;padding:9px 12px;border-radius:9px;font-size:12px}.lib-class-section>header>div button:first-child{background:#edf3ff;border-color:transparent}.lib-show-more{display:block;margin:14px auto 0}.lib-section-empty{font-size:13px;color:#73859a;padding:15px 0}.lib-resource{position:relative}.lib-select{position:absolute;top:8px;left:8px;background:#fffffff2;border-radius:6px;padding:4px;line-height:0}.lib-select input{width:17px;height:17px;margin:0;accent-color:#326de6}.lib-resource.is-chosen{border-color:#326de6;box-shadow:0 0 0 1px #326de6}.lib-title-open{background:none;border:0;text-align:left;font-weight:750;font-size:inherit;padding:0;color:inherit;line-height:inherit;width:100%}.lib-art.type-pdf img{object-fit:contain;background:#e8edf5;padding:5px}.lib-art img+small{background:#fffffff2;border-radius:5px;padding:3px 6px;left:8px;bottom:7px}.lib-art>span{display:flex;align-items:center;justify-content:center}.lib-art small{max-width:90%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lib-resource footer{min-height:38px;align-items:center;justify-content:space-between;position:relative}.lib-resource footer .lib-use{margin:0;font-size:12px}.lib-card-menu{margin-left:auto;position:relative}.lib-card-menu summary{list-style:none;cursor:pointer;font-size:18px;color:#607a99;padding:3px 7px;border-radius:6px}.lib-card-menu[open] summary{background:#eaf1ff}.lib-card-menu>div{position:absolute;bottom:34px;right:0;z-index:5;min-width:135px;background:white;border:1px solid #d8e3ef;box-shadow:0 6px 25px #17314f22;border-radius:10px;padding:6px}.lib-resource footer .lib-card-menu button{display:block;width:100%;text-align:left;padding:8px;font-size:12px}.lib-bulk{display:flex;gap:12px;align-items:center;flex-wrap:wrap;background:#edf3ff;padding:12px 15px;border-radius:11px;margin-bottom:18px;font-size:13px}.lib-bulk button{border:0;background:white;color:#326de6;border-radius:8px;padding:8px 10px}.lib-project-previews{display:flex;gap:8px;margin:16px 0}.lib-project-previews .lib-art{flex:1;min-width:0;height:94px;border-radius:8px}.lib-project-previews .lib-art>span svg{width:32px;height:32px}.lib-project-previews .lib-art small{font-size:9px;bottom:5px;left:5px}.lib-private-notice{border:1px solid #ecd5e2;border-radius:10px;padding:12px;background:#fff6fb;color:#83546a;font-size:13px}.lib-dropzone{border:2px dashed #bfd1ed;border-radius:12px;padding:22px;background:#f5f8ff;color:#326de6;align-items:center;text-align:center}.lib-dropzone input{margin-top:8px}.lib-upload-status{display:flex;flex-direction:column;gap:8px;margin:12px 0 18px}.lib-upload-status>div{display:flex;gap:10px;justify-content:space-between;align-items:center;padding:10px 12px;background:#f2f6fb;border-radius:8px;font-size:12px;overflow-wrap:anywhere}.lib-upload-status strong{font-size:11px;flex-shrink:0;max-width:45%}.lib-upload-status small{margin:3px 0 0}.lib-upload-status [data-status=saved]{background:#eaf7f0;color:#297a55}.lib-upload-status [data-status=fileError],.lib-upload-status [data-status=error]{background:#fbedef;color:#a44d62}.lib-list .lib-select{top:5px;left:5px}.lib-list .lib-select input{width:14px;height:14px}.lib-resource-info .lib-members{min-height:0}.lib-resource-info .lib-tags{margin-bottom:8px}
@media(max-width:650px){.lib-class-section{padding-left:10px;border-left-width:3px}.lib-class-section>header{align-items:flex-start;flex-direction:column}.lib-class-section h2{font-size:19px}.lib-class-section>header>div{padding-left:0}.lib-heading h1{font-size:29px}.lib-filters select{max-width:none;flex:1 1 40%}.lib-resource footer .lib-use{font-size:10px;text-align:left;max-width:calc(100% - 25px)}.lib-card-menu summary{padding:3px 2px}.lib-art>span svg{width:36px;height:36px}.lib-list footer .lib-use{font-size:12px;max-width:none}}

.lib-pdf-dialog{width:min(960px,calc(100vw - 24px));max-height:94dvh}.lib-pdf-toolbar{display:flex;align-items:center;gap:9px;flex-wrap:wrap;padding:10px 16px;border-bottom:1px solid #e2e9f3;background:#f7f9fe}.lib-pdf-toolbar button{border:1px solid #d9e3f0;border-radius:8px;min-width:35px;height:35px;background:white;color:#326de6}.lib-pdf-toolbar label{display:flex;align-items:center;gap:6px;font-size:12px}.lib-dialog .lib-pdf-toolbar input{width:64px;padding:5px;min-height:35px}.lib-pdf-toolbar a{margin-left:auto;background:#326de6;color:white;border-radius:8px;padding:9px 12px;font-size:12px;text-decoration:none}.lib-pdf-toolbar span{font-size:12px}.lib-pdf-pages{height:65dvh;overflow:auto;background:#e3e9f2;padding:14px;overscroll-behavior:contain}.lib-pdf-page{min-height:650px;margin-bottom:18px;text-align:center;display:flex;align-items:center;flex-direction:column;gap:8px}.lib-pdf-page canvas{display:block;background:white;box-shadow:0 2px 12px #17314f22;flex-shrink:0}.lib-pdf-page small{margin:0}.lib-pdf-viewer>[data-pdf-status]{font-size:13px;color:#677e98;padding:0 16px}.lib-pdf-viewer>[data-pdf-status]:empty{display:none}

.lib-art.is-favicon img{object-fit:contain;padding:25px;background:#f0f5fc}.lib-art.is-favicon img+small{background:white}.lib-pdf-toolbar button:disabled{opacity:.45;cursor:default}

.lib-pdf-page{width:max-content;min-width:100%}

.ch271{max-width:1200px;margin:auto}.ch271-private{display:inline-block;color:#426495;background:#eaf0fb;border-radius:20px;padding:6px 12px;font-size:.85rem}.ch271-filters{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:20px 0 12px}.ch271-filters label{display:grid;gap:6px}.ch271-filters input,.ch271-filters select{width:100%;min-height:42px;border:1px solid #d8dfeb;border-radius:10px;padding:8px;background:white;font:inherit}.ch271-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr));gap:18px;margin:20px 0}.ch271-card,.ch271-stat{background:#fff;border:1px solid #dee5ef;border-radius:20px;padding:20px;box-shadow:0 5px 16px #1d3e6b08;min-width:0}.ch271-card header{display:flex;justify-content:space-between;gap:12px;color:#526785;font-size:.85rem}.ch271-card header span{font-weight:700;color:#326de6}.ch271-card h3{font-size:1.12rem;margin:14px 0 6px;overflow-wrap:anywhere}.ch271-card p,.ch271-card small{color:#64748b}.ch271-card li{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px solid #edf1f7}.ch271-card ul{list-style:none;padding:0}.ch271-card li small{display:block;margin-top:4px}.ch271-card li strong{white-space:nowrap}.ch271-card details{margin-top:16px}.ch271-card summary{cursor:pointer;padding:8px 0}.ch271-table{overflow:auto;max-height:360px}.ch271 table{border-collapse:collapse;width:100%;font-variant-numeric:tabular-nums}.ch271 th,.ch271 td{text-align:left;padding:10px;border-bottom:1px solid #edf1f7}.ch271 td{white-space:nowrap}.ch271-stat{margin-top:20px;background:#f7faff}.ch271-pending{background:#fff6df;border:1px solid #e9d6a0;border-radius:14px;padding:14px;margin:12px 0}.ch271 button{min-height:42px}.settings-check:has([data-settings-class-history]){display:flex;flex-wrap:wrap;justify-content:space-between;margin:16px 0}.settings-check:has([data-settings-class-history]) span{width:100%;font-size:.85em;color:#64748b}
/* Biblioteca 2.0 — compact explorer, shared resource references and contextual controls. */
.lib-workspace{max-width:1360px}.lib-heading{margin-bottom:16px;gap:12px}.lib-heading h1{font-size:30px;letter-spacing:-1px;margin:2px 0}.lib-heading .lib-eyebrow{font-size:10px;margin:0}.lib-heading-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.lib-heading-actions>button,.lib-workspace .lib-section-title button{min-height:42px;border:1px solid #d4dff0;border-radius:11px;background:white;color:#2454bd;padding:9px 13px;font:inherit;font-size:13px;font-weight:650}.lib-heading-actions>.primary{background:#1744ef;color:white;border-color:#1744ef}.lib-sync{font-size:11px;color:#687d99;display:block;margin-top:4px}.lib-tabs{gap:8px;border:0;padding:5px;background:#eaf0f9;border-radius:13px;margin:0 0 16px;width:fit-content;max-width:100%}.lib-tabs button{border-radius:9px;min-height:39px;font-size:13px}.lib-tabs button.active{background:white;color:#1943cc;box-shadow:0 2px 7px #19375c0b}.lib-filters{display:block;margin-bottom:12px}.lib-search{width:100%;box-sizing:border-box;min-height:48px;margin-bottom:10px;box-shadow:0 3px 12px #19375c04}.lib-filter-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.lib-filter-row select{min-height:39px;font-size:12px;max-width:180px}.lib-filter-row .lib-sort{display:flex;align-items:center;gap:7px;margin-left:auto;color:#637791;font-size:11px}.lib-view-switch{width:auto}.lib-view-switch button{min-height:39px;font-size:12px;padding:7px 12px}.lib-secondary{position:relative;color:#4c6484;font-size:12px}.lib-secondary summary{padding:10px 8px;cursor:pointer}.lib-secondary[open]{background:white;border:1px solid #dce4f2;border-radius:9px;padding:7px}.lib-secondary>label{display:flex;align-items:center;gap:7px;max-width:230px;margin-top:8px}.lib-active-filters{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin:0 0 16px}.lib-active-filters>span{background:#e9effb;color:#3d5b87;border-radius:20px;font-size:11px;padding:5px 9px;max-width:220px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.lib-active-filters>button{border:0;background:none;color:#2454bd;padding:6px;font-size:12px}.lib-breadcrumb{display:flex;align-items:center;gap:7px;flex-wrap:wrap;margin:4px 0 15px;font-size:13px}.lib-breadcrumb button{border:0;background:none;color:#3264ca;padding:4px}.lib-breadcrumb strong{color:#243e60}.lib-class-sections{gap:17px}.lib-class-section{border:1px solid #dfe7f2;border-left:4px solid var(--lib-color);border-radius:14px;background:linear-gradient(130deg,color-mix(in srgb,var(--lib-color) 4%,white),#fff 75%);padding:15px}.lib-class-section>header{gap:10px;margin-bottom:12px;flex-wrap:wrap}.lib-class-section>header>button{min-height:44px}.lib-class-section h2{font-size:19px;letter-spacing:-.4px}.lib-class-symbol{width:40px;height:40px;border-radius:11px;font-size:14px}.lib-class-section>header>div{align-items:center}.lib-class-section>header>div>button{font-size:11px;min-height:38px;padding:8px 10px}.lib-section-empty{padding:8px 0 0;margin:0;font-size:12px}.lib-order-controls{display:flex;gap:2px}.lib-order-controls button{border:0!important;background:#f0f4fb!important;color:#6880a3!important;min-width:30px;min-height:30px!important;padding:3px!important;border-radius:7px;cursor:grab}.lib-order-controls button:disabled{opacity:.35;cursor:default}.lib-folder-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:12px;margin:0 0 17px}.lib-folder{padding:13px;border:1px solid color-mix(in srgb,var(--lib-color) 22%,white);border-radius:13px;background:color-mix(in srgb,var(--lib-color) 7%,white);min-width:0;position:relative;transition:border-color .15s,box-shadow .15s;cursor:default}.lib-folder:hover{border-color:var(--lib-color);box-shadow:0 4px 14px #17314f0b}.lib-folder-main{display:flex;align-items:center;gap:11px;min-width:0}.lib-folder-icon{color:var(--lib-color);flex:none}.lib-folder-icon svg{width:40px;height:40px;fill:color-mix(in srgb,var(--lib-color) 10%,transparent)}.lib-folder-main>div{min-width:0}.lib-folder h3{font-size:14px;font-weight:750;margin:0 0 4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.lib-folder small{font-size:11px;color:#6d7c91}.lib-folder footer{display:flex;justify-content:space-between;align-items:center;margin-top:9px}.lib-folder footer>button{min-height:32px;border:0;background:color-mix(in srgb,var(--lib-color) 10%,white);color:var(--lib-color);padding:5px 10px;border-radius:7px;font-weight:650;font-size:11px}.lib-folder details{position:relative}.lib-folder summary{padding:5px;cursor:pointer;list-style:none}.lib-folder details>div{position:absolute;z-index:6;right:0;background:white;border:1px solid #dae4f2;border-radius:10px;box-shadow:0 6px 24px #16345622;padding:5px;min-width:170px}.lib-folder details button{display:block;min-height:38px;border:0;background:white;text-align:left;font-size:12px;padding:8px;color:#3f5677;width:100%}.lib-folder .lib-order-controls{position:absolute;top:4px;right:4px;opacity:.2}.lib-folder:hover .lib-order-controls,.lib-folder:focus-within .lib-order-controls{opacity:1}.lib-resource-grid{grid-template-columns:repeat(auto-fill,minmax(295px,1fr));gap:12px}.lib-resource{display:grid;grid-template-columns:86px minmax(0,1fr);border-radius:13px;overflow:visible;min-height:145px}.lib-cover{border-radius:13px 0 0 13px;overflow:hidden}.lib-art{height:100%;min-height:145px;border-radius:inherit}.lib-art img{object-fit:contain;padding:5px;box-sizing:border-box}.lib-art small{font-size:8px;left:5px;bottom:6px;max-width:calc(100% - 10px)}.lib-art>span svg{width:35px;height:35px}.lib-art.is-favicon img{padding:15px;background:#eff4fc}.lib-brand-text{font-size:13px;font-weight:750;letter-spacing:-.5px;color:#314e67}.lib-resource-info{padding:10px 12px 8px;min-width:0}.lib-resource h3{font-size:14px;margin:5px 0 6px;line-height:1.3}.lib-resource .lib-members{font-size:10px;margin:0 0 5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.lib-card-top{min-height:22px}.lib-badge{font-size:9px;padding:3px 6px}.lib-star{font-size:19px;min-width:28px;min-height:28px}.lib-resource footer{min-height:30px;padding-top:4px}.lib-resource footer .lib-use{font-size:11px;min-height:30px}.lib-select{top:5px;left:5px;padding:3px}.lib-select input{width:16px;height:16px}.lib-card-menu>div{z-index:8;min-width:165px}.lib-card-menu summary{font-size:18px}.lib-list{display:flex}.lib-list .lib-resource{grid-template-columns:56px minmax(0,1fr);min-height:92px}.lib-list .lib-art{min-height:92px}.lib-list .lib-art small{display:none}.lib-list .lib-resource-info{padding:8px 13px}.lib-list .lib-tags{display:none}.lib-list .lib-card-top{position:absolute;right:10px;top:8px}.lib-list h3{padding-right:135px;margin-bottom:4px}.lib-list footer{border:0;padding:0}.lib-list .lib-resource footer .lib-use{margin-left:auto}.lib-project-card{padding:17px;border-radius:15px;border-top-width:3px}.lib-class-grid{gap:14px;grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}.lib-project-card h3{font-size:19px;margin:8px 0 6px}.lib-project-symbol{display:inline-grid;place-items:center;width:43px;height:43px;border-radius:12px;background:color-mix(in srgb,var(--lib-color) 10%,white)}.lib-project-card p{font-size:12px;line-height:1.45;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.lib-project-previews{margin:12px 0;gap:6px}.lib-project-previews .lib-art{min-height:0;height:72px}.lib-project-card>button:last-child{border:1px solid #dde5f2;border-radius:8px;padding:8px 12px;background:white;color:#436496;font-size:12px}.lib-read-error{padding:14px;border:1px solid #efc98a;background:#fff6e7;border-radius:10px;font-size:13px}.lib-read-error button{margin-left:8px}.lib-empty{padding:25px 16px}.lib-dialog .lib-check-inline{display:flex;flex-direction:row;align-items:center;font-weight:400;gap:8px}.lib-dialog input[type=checkbox]{width:18px;height:18px;min-height:18px;flex:none;accent-color:#2159de}.lib-dialog .lib-folder-color{display:flex;flex-direction:row;align-items:center;gap:12px}.lib-dialog input[type=color]{width:60px;padding:4px;height:40px}.lib-add-options{gap:12px}.lib-add-options button{display:flex;flex-direction:column;align-items:flex-start;gap:10px;padding:20px;text-align:left;min-height:155px;background:linear-gradient(135deg,#f1f6ff,#fff)}.lib-add-options button>span{font-size:28px;border-radius:10px;background:#e2ecff;width:45px;height:45px;display:grid;place-items:center}.lib-add-options button strong{font-size:16px}.lib-add-options button small{font-size:12px;font-weight:400;line-height:1.5;margin:0}.lib-dialog form>label{margin-bottom:12px}.lib-locations summary{font-weight:650;line-height:1.5}.lib-bulk{padding:10px 12px;margin-bottom:13px}.lib-drop-hint{display:none}
@media(max-width:760px){.lib-heading{align-items:center}.lib-heading h1{font-size:27px}.lib-heading-actions{max-width:57%}.lib-heading-actions>button{font-size:11px;padding:8px 10px;min-height:40px}.lib-filter-row{gap:6px}.lib-filter-row>select{flex:1 1 28%;max-width:100%;min-width:0}.lib-filter-row .lib-sort{margin-left:0;flex:1}.lib-filter-row .lib-sort select{max-width:180px}.lib-tabs{width:auto;justify-content:space-between;gap:2px}.lib-tabs button{padding:8px;font-size:11px}.lib-class-section{padding:12px}.lib-class-section>header>div{gap:5px}.lib-class-section>header>div>button{padding:7px;font-size:10px}.lib-folder-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.lib-folder{padding:12px 10px}.lib-folder-main{gap:7px}.lib-folder-icon svg{width:32px;height:32px}.lib-folder h3{font-size:12px}.lib-folder .lib-order-controls{position:static;justify-content:flex-end;margin-top:5px;opacity:1}.lib-resource-grid{grid-template-columns:1fr}.lib-resource{grid-template-columns:77px minmax(0,1fr)}.lib-art{min-height:136px}.lib-list .lib-resource{grid-template-columns:48px minmax(0,1fr)}.lib-list h3{padding-right:0}.lib-list .lib-card-top{position:static;align-self:stretch;float:none;order:-1}.lib-list .lib-resource footer .lib-use{margin-left:0;font-size:11px}.lib-secondary{margin-left:auto}.lib-view-switch{width:auto}.lib-view-switch button{padding:8px 10px}.lib-add-options{grid-template-columns:1fr}.lib-add-options button{min-height:120px}.lib-workspace{min-width:0}.lib-filter-row .lib-secondary select{max-width:230px}.lib-class-grid{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){.lib-workspace *{transition:none!important;scroll-behavior:auto!important}}
/* History presentation only: existing queries, totals and attribution are unchanged. */
.ch271>header h2{font-size:22px;margin:10px 0 5px}.ch271>header p{font-size:13px;color:#6a7d95;max-width:760px}.ch271-filters{gap:9px;margin:14px 0 8px;grid-template-columns:repeat(auto-fit,minmax(145px,1fr));align-items:end}.ch271-filters label{font-size:11px;color:#536c8c;gap:5px}.ch271-filters select,.ch271-filters input{font-size:12px;min-height:39px}.ch296-periods{display:flex;gap:5px;grid-column:1/-1;flex-wrap:wrap}.ch296-periods button{border:1px solid #d9e4f4;border-radius:20px;background:#fff;color:#4d6586;padding:7px 13px;font-size:12px;min-height:36px}.ch296-periods button[aria-pressed=true]{background:#214ee8;color:white;border-color:#214ee8}.ch271-cards{display:block;margin:16px 0}.ch296-day{margin:20px 0}.ch296-day>h3{font-size:13px;color:#6d8099;margin-bottom:10px;text-transform:capitalize}.ch296-day-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:12px;align-items:start}.ch271-card{padding:0;border-radius:13px;box-shadow:none;overflow:hidden}.ch271-card .ch296-result{margin:0}.ch296-result>summary{padding:15px;list-style:none;cursor:pointer}.ch296-result>summary::after{content:'⌄';float:right;color:#5a78a1}.ch296-result[open]>summary::after{content:'⌃'}.ch296-result>summary h3{font-size:15px;margin:10px 0 4px}.ch296-result>summary p{font-size:11px;margin:0 0 10px}.ch296-summary{font-size:12px;font-weight:700;color:#315f9f;background:#edf4ff;padding:5px 8px;border-radius:6px;display:inline-block}.ch296-result> :not(summary){margin-left:15px;margin-right:15px}.ch296-result>ul{font-size:12px}.ch296-result>p,.ch296-result>strong{font-size:12px}.ch296-result .ch271-table{max-height:300px}.ch271-stat{padding:15px;border-radius:13px;margin-top:12px}.ch271-stat h3{font-size:15px}.ch271 th,.ch271 td{font-size:12px;padding:9px}.ch271 td{white-space:nowrap}.ch271-private{font-size:10px;padding:5px 9px}
.lib-sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.lib-resource h3{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.lib-class-section>header>button{min-width:0;max-width:100%}.lib-class-section>header>button>span{min-width:0}.lib-class-section h2{overflow-wrap:anywhere}.lib-drop-target{outline:3px solid #5d8bee;outline-offset:2px}
/* v297: stable class identity, shared folders and a compact teacher history. */
.lib-heading{margin-bottom:13px}.lib-heading h1{font-size:32px}.lib-tabs{margin-bottom:13px}.lib-filters{margin-bottom:10px}.lib-search{min-height:43px;margin-bottom:8px}.lib-breadcrumb{margin:2px 0 8px}
.lib-class-sections{gap:23px}.lib-class-section{padding:0;border:1px solid color-mix(in srgb,var(--lib-color) 38%,white);border-left:5px solid var(--lib-color);background:white;box-shadow:0 3px 12px #17314f06;overflow:visible}.lib-class-section>header{margin:0;padding:13px 15px;background:var(--lib-tint);border-radius:12px 12px 0 0;gap:12px}.lib-class-section>header>button{flex:1;min-width:130px}.lib-class-section h2{color:#193552;font-size:20px;line-height:1.2}.lib-class-symbol{background:var(--lib-color);color:white;font-size:13px;font-weight:750;box-shadow:0 3px 8px #19375c12}.lib-class-section>header>div>.primary{background:#2459db;color:white;border-color:#2459db}.lib-class-section>header>div>.primary:hover{background:#1747ba}.lib-class-section>header>div>button{min-height:40px;font-size:12px}.lib-class-section>.lib-folder-grid{margin:13px 14px}.lib-class-section>.lib-resource-grid{margin:13px 14px}.lib-class-section>.lib-resource-grid:empty{display:none}.lib-class-section>.lib-section-empty{padding:0 15px 10px;color:#536b87}.lib-class-section.is-empty>header{padding:10px 14px;border-radius:12px}.lib-class-section.is-empty .lib-class-symbol{width:34px;height:34px}.lib-class-section.is-empty h2{font-size:17px}.lib-class-section.is-empty .lib-section-empty{display:none}.lib-class-section:has([aria-expanded=false])>header{border-radius:12px}
.lib-folder .lib-order-controls{position:static;justify-content:flex-end;opacity:.65;margin:4px 0 -5px}.lib-folder:focus-within .lib-order-controls{opacity:1}.lib-folder-grid{margin-bottom:12px}.lib-folder footer>button{min-height:38px}.lib-folder small{color:#536680}.lib-folder-heading{padding:11px 13px;background:color-mix(in srgb,var(--lib-color) 8%,white);border:1px solid color-mix(in srgb,var(--lib-color) 28%,white);border-radius:12px;margin:8px 0 12px;gap:10px}.lib-folder-heading>div{display:flex;align-items:center;gap:10px;min-width:0;flex:1}.lib-folder-heading h2{font-size:20px;margin:0;overflow-wrap:anywhere}.lib-folder-heading .lib-folder-icon svg{width:32px;height:32px}.lib-folder-heading>.primary{font-size:12px;padding:10px 13px;min-height:42px}.lib-folder-heading>span{white-space:nowrap;font-size:12px}.lib-folder-availability{border:1px solid #dce5f2;border-radius:11px;padding:12px;margin-bottom:14px}.lib-folder-availability legend{font-size:13px;font-weight:700;padding:0 5px}.lib-folder-availability p{font-size:12px;color:#526987;margin:3px 0 9px}.lib-folder-availability small{margin:10px 0 0;font-size:11px;line-height:1.5}.lib-folder-availability label{min-height:42px;box-sizing:border-box}.lib-checks label:has(input:checked){background:#e7efff;color:#1648b8;box-shadow:inset 0 0 0 1px #9eb9f4}.lib-domain-mark{display:grid;place-items:center;background:var(--brand);color:white;border-radius:11px;width:40px;height:40px;font:750 20px/1 system-ui;letter-spacing:-1px;box-shadow:0 2px 6px #18334f15}.lib-list .lib-domain-mark{width:33px;height:33px;font-size:17px;border-radius:9px}.lib-art img{color:transparent}.lib-card-menu button:hover,.lib-folder details button:hover{background:#edf3ff!important;border-radius:6px}
.ch297>header{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:10px 0 14px}.ch297>header h2{font-size:23px;margin:0 0 3px}.ch297>header p{margin:0;font-size:12px}.ch297-toolbar{display:flex;gap:13px;align-items:end;flex-wrap:wrap;background:#edf3ff;padding:13px;border:1px solid #d9e5fc;border-radius:12px}.ch297-toolbar>label{font-size:11px;color:#49617e;display:flex;flex-direction:column;gap:5px;min-width:160px;flex:1;max-width:300px}.ch297 select,.ch297 input{min-height:40px;font-size:13px;min-width:0;max-width:100%;width:100%;box-sizing:border-box}.ch297 .ch296-periods{gap:5px;flex:1}.ch297 .ch296-periods button{border-radius:9px;min-height:40px;padding:8px 12px;white-space:nowrap}.ch297-dates{display:flex;gap:10px;align-items:end;flex-wrap:wrap;padding:10px 0}.ch297-dates label{font-size:12px;display:flex;flex-direction:column;gap:4px}.ch297 [hidden]{display:none!important}.ch297-advanced{margin:8px 0 0;border:1px solid #e1e7f1;border-radius:10px;background:white;padding:0}.ch297-advanced>summary{cursor:pointer;font-size:12px;font-weight:650;color:#496181;padding:11px 13px;min-height:40px;box-sizing:border-box}.ch297-advanced .ch271-filters{margin:0;padding:0 13px 12px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr)) auto;gap:9px}.ch297-advanced .ch271-filters label{min-width:0}.ch297 .primary{min-height:40px;font-size:12px;border-radius:9px;background:#2459db;color:white;padding:8px 13px;border:0}.ch297-context{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:13px 0 5px;font-size:12px}.ch297-context>strong{font-size:16px;color:#274568}.ch297-context>span{color:#627590}.ch297-context>small{font-size:10px;background:#eef4f7;color:#456378;padding:5px 8px;border-radius:20px;margin-left:auto;max-width:100%}.ch297-local{font-size:11px;color:#62738b;margin:5px 0}.ch297 [data-class-history-status]{font-size:11px;color:#5a708d;min-height:0;margin:7px 0}.ch297-overview{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:9px;margin:10px 0 13px}.ch297-metric{display:flex;gap:9px;align-items:center;min-width:0;border:1px solid #dce6f5;border-radius:12px;background:#f4f7ff;padding:13px}.ch297-metric>span{display:grid;place-items:center;background:#e4ecff;color:#345cb3;width:32px;height:32px;border-radius:9px;font-size:20px;flex:none}.ch297-metric strong{font-size:23px;color:#1f3a5d;display:block;line-height:1.1}.ch297-metric small{display:block;font-size:11px;line-height:1.3;color:#526984;margin-top:5px}.ch297-metric.score{background:#edf8f4;border-color:#cce5d9}.ch297-metric.groups{background:#f6f1fc;border-color:#e3d9ef}.ch297-metric.other{background:#fff8ec;border-color:#efe1c6}.ch297-overview>p{grid-column:1/-1;font-size:11px;color:#657895;margin:0}.ch297 .ch297-stats{padding:0;border:1px solid #dce6f2;background:white}.ch297-stats>summary{padding:12px 14px;font-size:13px;color:#315782;cursor:pointer}.ch297-stats .ch271-table{max-height:320px;overflow:auto;margin:0 12px 12px}.ch297 .ch296-day{margin:19px 0}.ch297 .ch296-day>h3{display:flex;align-items:center;gap:10px;font-size:12px;color:#526c8e}.ch297 .ch296-day>h3:after{content:'';height:1px;background:#dce5f2;flex:1}.ch297 .ch271-card{border:1px solid #dbe5f2;border-left:4px solid var(--activity-color,#4774bd);background:white;border-radius:12px}.ch297-wheel{--activity-color:#5678c2}.ch297-score{--activity-color:#34836d}.ch297-groups{--activity-color:#8864b2}.ch297-memory,.ch297-cards{--activity-color:#b77e2f}.ch297-classify{--activity-color:#377e9e}.ch297 .ch296-result>summary{padding:13px;min-height:110px;box-sizing:border-box}.ch297 .ch296-result>summary header span{font-size:11px;font-weight:700;color:var(--activity-color);display:inline-flex;gap:6px;align-items:center}.ch297 .ch296-result>summary header i{font-style:normal;font-size:17px}.ch297 .ch296-result>summary time{font-size:10px;color:#6a7d94}.ch297 .ch296-result>summary h3{font-size:15px;margin:8px 0 4px}.ch297 .ch296-summary{background:color-mix(in srgb,var(--activity-color) 9%,white);color:#365273}.ch297 .ch296-result[open]>summary{background:#f7faff;border-bottom:1px solid #e4ebf4;margin-bottom:10px}.ch297 .ch296-result>ul{padding-bottom:10px}.ch297 .ch296-result header{gap:9px;flex-wrap:wrap}
@media(max-width:1000px){.ch297-overview{grid-template-columns:repeat(3,minmax(0,1fr))}.lib-class-section>header>button{flex-basis:100%}.ch297-advanced .ch271-filters{grid-template-columns:repeat(3,minmax(0,1fr))}.ch297-advanced .primary{justify-self:start}}
@media(max-width:600px){.lib-class-sections{gap:17px}.lib-class-section>header{padding:11px;gap:9px}.lib-class-section>header>div{gap:5px;align-items:center}.lib-class-section>header>div>button{font-size:10px;padding:7px;min-height:40px}.lib-class-section>.lib-folder-grid,.lib-class-section>.lib-resource-grid{margin:10px}.lib-class-section h2{font-size:18px}.lib-folder-heading{padding:10px;gap:8px;flex-wrap:wrap}.lib-folder-heading h2{font-size:17px}.lib-folder-heading>div{flex-basis:100%}.lib-folder-heading>.primary{margin-left:auto}.lib-folder .lib-order-controls{opacity:1}.ch297>header{align-items:flex-start;flex-direction:column;gap:7px}.ch297>header h2{font-size:21px}.ch297-toolbar{padding:10px;gap:10px}.ch297-toolbar>label{max-width:none;flex-basis:100%}.ch297 .ch296-periods{display:grid;grid-template-columns:1fr 1fr}.ch297 .ch296-periods button{font-size:11px;padding:8px 5px;white-space:normal}.ch297-advanced .ch271-filters{grid-template-columns:1fr}.ch297-context>small{margin-left:0;font-size:10px}.ch297-context>span{font-size:11px}.ch297-overview{grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}.ch297-metric{padding:10px;gap:7px}.ch297-metric>span{width:27px;height:27px;font-size:17px}.ch297-metric strong{font-size:21px}.ch297-metric small{font-size:10px}.ch297-dates{display:grid;grid-template-columns:1fr 1fr}.ch297-dates input{font-size:12px}.ch297 .ch296-day-grid{grid-template-columns:1fr}}
.lib-class-section>header>div>button.primary{background:#2459db;color:white;border-color:#2459db}.lib-class-section>header>div>button.primary:hover{background:#1747ba}
.lib-section-title.lib-folder-heading>button.primary{background:#2459db;color:white;border-color:#2459db}.lib-section-title.lib-folder-heading>button.primary:hover{background:#1747ba}
.lib-art img[data-lib-site-icon]{opacity:0}.lib-art img[data-lib-site-icon].is-loaded{opacity:1}
.lib-list .lib-resource footer .lib-use{margin-left:0}