.lesson-ideas-page{--li-navy:#303c6c;--li-coral:#f4976c;--li-cyan:#d2fdff}
.li-main{padding-bottom:32px}.li-main .li-intro{padding:16px 22px;align-items:center;gap:16px;margin-bottom:16px}.li-intro h1{font-size:clamp(1.7rem,3vw,2.4rem);line-height:1.15;margin:2px 0 8px}.li-intro p{max-width:850px;margin:5px 0}.li-intro .course-label,.li-intro .li-promise{display:none}.li-intro>img{width:64px;height:64px}
.li-search-row,.li-selected,.li-actions,.li-badges{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.li-main button,.li-main input[type=search],.li-tool-link{font:inherit;border:2px solid var(--li-navy);border-radius:0;box-shadow:none}.li-main button,.li-tool-link{background:var(--li-cyan);color:var(--li-navy);padding:9px 13px;min-height:44px;cursor:pointer;font-weight:700}.li-main button:hover,.li-tool-link:hover{background:var(--li-cyan);transform:none}.li-main button:disabled{opacity:.6;cursor:default}.li-main :is(button,a,input,summary):focus-visible{outline:3px solid var(--li-navy);outline-offset:3px}
.li-options-panel{border:2px solid var(--li-navy);background:#fff;padding:18px}.li-search-row{align-items:end;margin:0 0 20px}.li-search-row>div{flex:1;min-width:190px}.li-search-row label{display:block;font-weight:700;margin-bottom:6px}.li-search-row input{width:100%;min-height:46px;padding:9px 12px;background:white;color:var(--li-navy)}.li-selected{margin:12px 0}.li-selected:empty{display:none}.li-selected button{font-size:.82rem;background:var(--li-cyan);min-height:34px;padding:4px 8px}#li-notice:empty{display:none}#li-notice{padding:9px 12px;background:var(--li-cyan)}
.li-workspace{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(180px,.66fr) minmax(0,1fr);align-items:start;gap:18px}.li-workspace>section{min-width:0}.li-workspace h2{font-size:1.12rem;line-height:1.3;margin:0 0 12px}.li-filter-hint{font-size:.83rem;line-height:1.45;margin:0 0 12px}.li-filter-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.li-advanced{margin-top:12px}.li-filter-box{min-width:0;margin:0;padding:0;border:0;background:transparent}.li-filter-box legend{font-weight:700;font-size:.85rem;line-height:1.25;padding:0 0 8px;margin-bottom:4px;width:100%;border-bottom:1px solid #c9cede}.li-options{height:190px;overflow-y:auto;overflow-x:hidden;scrollbar-gutter:stable;overscroll-behavior:contain}.li-options label{display:flex;align-items:flex-start;gap:7px;margin:0;padding:6px 2px;min-height:34px;line-height:1.35;font-size:.82rem;cursor:pointer;overflow-wrap:anywhere}.li-options label:hover{background:var(--li-cyan)}.li-options label:has(input:checked){background:var(--li-cyan)}.li-options input{flex:none;margin:1px 0 0;width:17px;height:17px;accent-color:var(--li-navy)}.li-options p{font-size:.78rem;line-height:1.4;margin:3px 0 8px}.li-options span{min-width:0}.li-quick .li-options{height:190px}
.li-browser-list,.li-detail-panel{position:sticky;top:16px;border:0;border-left:1px solid #c9cede;padding:0 0 0 18px;background:transparent;max-height:calc(100vh - 32px)}.li-browser-list{display:flex;flex-direction:column}.li-browser-list h2{margin-bottom:5px}.li-browser-list #li-count{font-size:.83rem;margin:0 0 12px;line-height:1.4}.li-browser-list>button{font-size:.83rem;margin-top:12px;width:100%;background:var(--li-cyan)}#li-activity-list{list-style:none;margin:0;padding:0;overflow:auto;max-height:calc(100vh - 235px);min-height:130px;scrollbar-gutter:stable;overscroll-behavior:contain}#li-activity-list li{margin:0;padding:0}#li-activity-list button{display:block;width:100%;border:0;border-bottom:1px solid #c9cede;background:#fff;text-align:left;font-size:.86rem;font-weight:500;padding:10px 8px;line-height:1.4;overflow-wrap:anywhere}#li-activity-list button:hover{background:var(--li-cyan)}#li-activity-list button[aria-selected=true]{background:var(--li-cyan);font-weight:700;border-left:4px solid var(--li-navy);padding-left:4px}#li-activity-list button:focus-visible{outline-offset:-3px}
.li-detail-panel{overflow:auto;scrollbar-gutter:stable;overscroll-behavior:contain}.li-detail-panel>h2{font-size:.85rem;letter-spacing:.03em;text-transform:uppercase;border-bottom:1px solid #c9cede;padding-bottom:10px}.li-detail-panel #li-detail-heading{scroll-margin-top:15px}.li-detail-panel .li-preview-card{border:0;padding:0;outline:none;background:none}.li-preview-card h2{font-size:1.4rem}.li-preview-card .li-actions{flex-direction:column;align-items:stretch}.li-preview-card .li-actions button{text-align:left}.li-detail-body{min-width:0}.li-cards-heading{font-size:1.35rem;margin:28px 0 5px;border-top:2px solid var(--li-navy);padding-top:20px}
.li-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:18px;align-items:stretch}.li-card{display:flex;flex-direction:column;border:2px solid var(--li-navy);border-top:7px solid var(--li-navy);background:#fff;padding:20px;min-width:0;scroll-margin-top:20px}.li-card[data-category=interactive]{border-top-color:#a54925}.li-card h2{font-size:1.3rem;line-height:1.25;margin:0 0 9px}.li-card .li-summary{margin:0 0 12px;line-height:1.55}.li-badges{gap:6px;align-items:start;margin-bottom:12px}.li-badges span{display:inline-block;background:#edf2f4;font-size:.79rem;padding:4px 7px;line-height:1.35}.li-badges .li-equipment-badge{background:var(--li-cyan)}.li-badges .li-cross{background:var(--li-cyan)}.li-card details>summary{cursor:pointer;font-weight:700;min-height:44px;align-content:center}.li-card details[open]>summary{border-bottom:1px solid #ccd1df;margin-bottom:14px}.li-card h3{font-size:1rem;margin:18px 0 5px}.li-card p,.li-card li{line-height:1.55;overflow-wrap:anywhere}.li-card ol,.li-card ul{padding-left:23px;margin:7px 0}.li-prompt{border-left:4px solid #a5d4dc;background:var(--li-cyan);padding:10px 13px;margin:8px 0 15px}.li-actions{margin-top:auto;padding-top:15px;justify-content:flex-start}.li-actions button{font-size:.85rem;min-height:39px;padding:7px 10px;background:white}.li-actions button[aria-pressed=true]{background:var(--li-cyan)}.li-tool-link{display:inline-block;text-decoration:none;margin:12px 0 0;background:var(--li-cyan)}.li-source{font-size:.82rem}.li-source a{margin-right:12px}.li-mode{font-size:.87rem;border:1px solid #aab1c8;padding:8px}.li-card.li-picked{outline:4px solid var(--li-cyan);outline-offset:3px}#li-empty{padding:20px;border:2px solid var(--li-navy);background:var(--li-cyan);margin-top:18px}#li-relax{display:flex;gap:8px;flex-wrap:wrap}#li-more-results{display:block;margin:24px auto}.li-footnote{font-size:.87rem;margin-top:25px}.li-main [hidden]{display:none!important}
@media(min-width:1500px){.li-workspace{grid-template-columns:minmax(0,1.5fr) minmax(210px,.65fr) minmax(0,1fr)}.li-cards{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:1100px){.li-workspace{grid-template-columns:minmax(220px,.7fr) minmax(0,1fr)}.li-filter-panel{grid-column:1/-1}.li-filter-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.li-primary{grid-template-columns:repeat(3,minmax(0,1fr))}.li-browser-list,.li-detail-panel{position:static;max-height:700px}.li-browser-list{border-left:0;padding-left:0}#li-activity-list{max-height:520px}}
@media(max-width:760px){.li-workspace{grid-template-columns:1fr}.li-filter-panel{grid-column:auto}.li-filter-grid,.li-primary{grid-template-columns:repeat(2,minmax(0,1fr))}.li-options,.li-quick .li-options{height:165px}.li-options-panel{padding:12px}.li-browser-list,.li-detail-panel{max-height:none;border-left:0;border-top:1px solid #c9cede;padding:16px 0 0}#li-activity-list{max-height:300px}.li-detail-panel{overflow:visible}.li-cards{grid-template-columns:1fr}.li-card{padding:16px}.li-main .li-intro{padding:14px;gap:10px}.li-intro>img{width:48px;height:48px}.li-intro p{font-size:.9rem}}
@media(max-width:400px){.li-filter-grid{gap:8px}.li-options-panel{padding:10px}.li-filter-box{padding:0}.li-options label{font-size:.78rem;gap:5px}.li-filter-box legend{font-size:.8rem}.li-options input{width:16px;height:16px}.li-search-row>div{min-width:100%}.li-main button{max-width:100%}.li-card{padding:13px}.li-intro>img{display:none}}
@media(min-width:1101px){.li-main .li-intro{padding:10px 18px;margin-bottom:12px}.li-intro h1{font-size:2rem;margin:2px 0 5px}.li-intro p{margin:3px 0}.li-browser-list,.li-detail-panel{height:clamp(400px,60dvh,700px);max-height:clamp(400px,60dvh,700px)}}
/* All eight filter groups share two compact rows on desktop. */
.li-filter-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px 10px}.li-options,.li-quick .li-options{height:var(--li-filter-height,160px)}.li-options label{min-height:24px;padding:3px 1px;font-size:.78rem;line-height:1.25;gap:5px}.li-filter-box legend{font-size:.8rem;padding-bottom:5px;margin-bottom:4px}.li-options input{width:15px;height:15px}.li-options-panel{padding:14px}.li-search-row{margin-bottom:12px}.li-search-row input{min-height:40px;padding:7px 10px}.li-selected{margin:7px 0}.li-selected button{font-size:.74rem;min-height:27px;padding:3px 6px}.li-browser-list>button#li-random{display:flex;align-items:center;justify-content:center;gap:7px;flex:none;margin:0 0 10px;font-size:.8rem;padding:7px;min-height:38px}#li-random svg{width:24px;height:24px;flex:none}#li-random svg rect{fill:none;stroke:currentColor;stroke-width:1.7}#li-random svg circle{fill:currentColor}#li-activity-list{flex:1;min-height:0}.li-browser-list{height:clamp(400px,60dvh,700px)}
.li-quick .li-options label{min-height:20px;padding:2px 0}
@media(max-width:1100px) and (min-width:761px){.li-workspace{grid-template-columns:minmax(0,1.5fr) minmax(170px,.65fr) minmax(0,1fr)}.li-filter-panel{grid-column:auto}.li-filter-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.li-options,.li-quick .li-options{height:130px}.li-browser-list,.li-detail-panel{position:sticky;top:12px;max-height:calc(100dvh - 24px)}}
@media(max-width:760px){.li-filter-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.li-options,.li-quick .li-options{height:150px}.li-browser-list{height:auto}.li-browser-list>button#li-random{position:sticky;top:0;z-index:1}#li-activity-list{flex:auto;max-height:300px}}
/* Share the full available options height across all three desktop columns. */
@media(min-width:1101px){.li-workspace{height:clamp(400px,60dvh,700px);align-items:stretch}.li-filter-panel{min-height:0}.li-filter-grid{height:100%;grid-template-rows:repeat(2,minmax(0,1fr))}.li-filter-box{display:flex;flex-direction:column;min-height:0}.li-filter-box legend{flex:none}.li-filter-box .li-options{height:auto;min-height:0;flex:1}.li-browser-list,.li-detail-panel{height:100%;max-height:100%;min-height:0}#li-activity-list{max-height:none}}
/* Compact actions stay beside the title, including in the selected preview. */
.li-card{container:li-card / inline-size}.li-card-header{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:10px;margin-bottom:9px}.li-card-header h2{margin:0;overflow-wrap:anywhere}.li-card .li-actions{display:grid;grid-template-columns:repeat(5,28px);gap:3px;margin:0;padding:0;align-items:start;justify-content:end}.li-card .li-actions button{display:grid;place-items:center;width:28px;height:30px;min-height:30px;padding:2px;border:0;background:transparent;line-height:1}.li-card .li-actions button:hover{background:var(--li-cyan)}.li-card .li-actions button svg{display:block;width:24px;height:24px}.li-actions :is([data-save],[data-copy],[data-link]) svg{fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.li-actions [data-save][aria-pressed=true] svg{fill:#b4dfe5}.li-card .li-actions button[aria-pressed=true]{background:transparent}.li-card .li-actions button:disabled{opacity:.5;cursor:wait}.li-export-status:empty{display:none}.li-export-status{font-size:.82rem;margin:0 0 10px;color:#8c291c}.li-downloads{width:100%;margin-top:10px}.li-downloads label{display:block;font-weight:700;font-size:.82rem}.li-downloads textarea{display:block;width:100%;box-sizing:border-box;font:inherit;font-weight:400;padding:6px;margin:5px 0 0;resize:vertical;border:1px solid #8d96b0;border-radius:0}
@container li-card (max-width:340px){.li-card .li-actions{grid-template-columns:repeat(3,28px)}}
@media print{.topbar,#li-controls,.li-actions,.li-downloads,#li-more-results,.li-footnote,footer{display:none!important}.li-cards{display:block}.li-card{break-inside:avoid;margin-bottom:20px}.li-card[hidden]{display:none!important}.li-card details>*{display:block}.li-card details>summary{display:none}}

/* Initial and populated browsing panes use the same responsive geometry. */
@media(max-width:760px){#li-activity-list{height:300px;flex:0 0 300px}.li-detail-panel{height:65dvh;max-height:65dvh;overflow:auto}}