/* Tabbed lesson workspace, intentionally scoped away from grading/editor UIs. */
.lw-workbench{--lw-bg:#07121b;--lw-panel:#0d1b27;--lw-line:#263f52;--lw-muted:#a9bacb;--lw-text:#eef3f8;--lw-blue:#7dbaff;color:var(--lw-text);font:14px/1.55 Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;min-width:0}
.lw-workbench *{box-sizing:border-box}.lw-workbench [hidden]{display:none!important}.lw-workbench a{color:inherit;text-decoration:none}.lw-workbench a:hover{text-decoration:underline}.lw-workbench button{font-family:inherit;font-size:13px;font-weight:600;line-height:1.4;min-height:42px;border:1px solid var(--lw-line);background:#112331;color:var(--lw-text);border-radius:7px;cursor:pointer;padding:10px 13px}.lw-workbench button:hover{background:#193348;border-color:#527492}.lw-workbench button:disabled{opacity:.4;cursor:not-allowed}.lw-workbench :focus-visible{outline:3px solid var(--lw-blue);outline-offset:3px}.lw-workbench h1,.lw-workbench h2,.lw-workbench h3{color:var(--lw-text);line-height:1.25;letter-spacing:0}
body.lw-theory{background:var(--lw-bg,#07121b)}body.lw-theory>header.path-work-header,body.lw-theory>.path-orientation,body.lw-theory>.path-next-bar,body.lw-theory .layout>.sidebar,body.lw-theory #saveStatus{display:none!important}body.lw-theory .layout{display:block!important;max-width:none!important;margin:0!important}body.lw-theory #main{padding:0!important;max-width:none!important}body.lw-theory.notes-open,body.lw-support.notes-open{padding-right:0!important}.lw-theory .lw-workbench{display:grid;grid-template-columns:225px minmax(0,1fr);max-width:1920px;margin:auto;min-height:100vh}
.lw-sidebar{padding:32px 20px 24px;background:#061018;border-right:1px solid var(--lw-line);align-self:stretch}.lw-brand{display:flex;align-items:center;gap:14px;padding:0 0 30px}.lw-brand b{font-size:38px;font-weight:800;color:#ff8369;letter-spacing:-3px}.lw-brand span{font-size:12px;font-weight:700;letter-spacing:1.8px}.lw-brand small{display:block;font-size:9px;color:var(--lw-muted);letter-spacing:1.1px;margin-top:4px}.lw-sidebar nav>a,.lw-nav-group>a{display:flex;align-items:center;min-height:40px;border-radius:6px;padding:9px 12px;font-size:13px}.lw-nav-group{border-top:1px solid #223646;padding-top:18px;margin-top:18px}.lw-nav-group .lw-child{padding-left:28px;font-size:12px;color:#c6d3df}.lw-nav-group .lw-child:before{content:'›';margin-right:12px;color:#829eaf}.lw-nav-group [aria-current=page]{background:#17344b;color:#fff;border-left:3px solid #5caaff}.lw-nav-group>.lw-eyebrow{display:block;padding:6px 12px}.lw-account-slot button{width:100%;justify-content:flex-start}.lw-menu{display:none!important}
.lw-main{padding:38px clamp(20px,3vw,50px) 22px;min-width:0;background:radial-gradient(ellipse at 75% 0,#15283655,transparent 60%),#07121b}.lw-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:24px}.lw-eyebrow{font-size:10px;letter-spacing:1.6px;font-weight:600;color:var(--lw-muted)!important}.lw-heading h1{font-size:clamp(23px,2.45vw,36px);font-weight:650;margin:12px 0 8px;max-width:950px;letter-spacing:-.6px}.lw-heading p{font-size:13px;color:var(--lw-muted);margin:0}.lw-course-controls{display:flex;flex-direction:column;align-items:flex-end;gap:12px;font-size:11px;color:var(--lw-muted);padding-top:6px;min-width:155px}.lw-course-controls>div{display:flex;gap:8px}.lw-course-controls button{width:42px;padding:7px;font-size:20px}.lw-tablist{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border:1px solid var(--lw-line);border-radius:8px;overflow:hidden;margin-bottom:22px;background:#091822}.lw-tablist button{border:0;border-radius:0;min-height:54px;background:transparent;color:var(--lw-muted);font-size:15px;gap:10px}.lw-tablist button[aria-selected=true]{background:linear-gradient(120deg,#1d3a52,#102536);color:#fff;box-shadow:inset 0 -3px #57a6ff}
.lw-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:22px;align-items:start}.lw-tool,.lw-lesson-rail{background:linear-gradient(135deg,#10212eaa,#081720aa);border:1px solid var(--lw-line);border-radius:9px;min-width:0}.lw-tool{overflow:hidden}.lw-toolbar{display:flex;align-items:center;gap:12px;padding:15px 18px;min-height:70px;border-bottom:1px solid var(--lw-line)}.lw-toolbar h2{margin:0;font-size:18px;flex:1}.lw-small{font-size:10px;color:var(--lw-muted)}.lw-window-controls{display:flex;gap:5px}.lw-window-controls button{min-width:38px;min-height:36px;padding:4px;font-size:20px;background:transparent}.lw-video{position:relative;aspect-ratio:16/9;background:#04090e;min-height:240px;margin:16px 16px 0;border-radius:5px;overflow:hidden}.lw-video iframe,.lw-video video{width:100%;height:100%;position:absolute;inset:0;border:0;background:#000}.lw-load-screen{min-height:100%;height:100%;display:flex;align-items:center;justify-content:center;flex-direction:column;padding:22px;text-align:center;background:radial-gradient(ellipse at 50% 40%,#162d40,#040c13 75%)}.lw-load-screen h3{font-size:18px;max-width:500px;margin:14px 0}.lw-load-screen p{font-size:11px;max-width:390px;color:var(--lw-muted);margin:12px 0 0}.lw-video-mark{font:bold clamp(42px,5vw,72px)/1.1 Georgia,serif;letter-spacing:3px;color:#f6f3e9}.lw-primary{background:#244e72!important;color:#fff!important;border-color:#407da9!important}.lw-primary:hover{background:#31648e!important}.lw-resource-foot{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:9px;padding:13px 18px;color:var(--lw-muted);font-size:10px}.lw-resource-foot a{color:#a4ceff;text-decoration:underline}.lw-editor-note{font-size:11px;line-height:1.6;background:#132937;border-bottom:1px solid var(--lw-line);margin:0;padding:12px 18px;color:#cbdbe7}.lw-scratch{height:600px;min-height:430px;background:#fff;position:relative;overflow:auto}.lw-scratch iframe{border:0;width:100%;min-width:1000px;height:100%;display:block;color-scheme:light}.lw-scratch .lw-load-screen{min-width:0;background:#081720}.lw-block-mark{background:#dd990c;border:1px solid #e5b244;border-radius:7px;padding:9px 14px;text-align:left;font-size:15px;color:#fff;line-height:1.4;box-shadow:0 10px 45px #0008}.lw-block-mark i{display:block;background:#3a77cc;padding:7px 12px;margin:8px -9px -4px;border-radius:4px;font-style:normal}.lw-note-help{margin:12px 20px;font-size:11px;color:var(--lw-muted)}.lw-workbench .t08-notebook{position:static!important;inset:auto!important;width:100%!important;max-width:none!important;box-shadow:none!important;border:0!important;padding:20px;background:transparent;z-index:auto;min-height:350px}.lw-workbench .t08-notebook .nb-list{max-height:140px;overflow:auto}.lw-workbench .t08-notebook #nbText{min-height:240px;resize:vertical}.lw-workbench .t08-notebook .nb-head h2{font-size:18px}.lw-files{padding:22px}.lw-files>h3{font-size:16px;margin:0 0 16px}.lw-file{display:flex!important;flex-direction:column;align-items:flex-start!important;text-align:left!important;gap:5px;padding:17px!important;margin:10px 0;border:1px solid var(--lw-line);border-radius:7px;width:100%;background:#10222f!important}.lw-file strong{font-size:13px;color:#e5eef7}.lw-file span,.lw-file p{font-size:11px;color:var(--lw-muted);margin:0}.lw-file a{font-size:11px;color:var(--lw-blue)}
.lw-lesson-rail{padding:22px 20px}.lw-lesson-rail>h2{font-size:17px;margin:0 0 18px}.lw-lesson-rail details{margin:0 0 10px}.lw-lesson-rail summary{padding:11px 12px;background:#173047;border:1px solid #294a65;border-radius:6px;color:#deebf7;font-weight:600;font-size:12px;cursor:pointer}.lw-lesson-rail article{padding:10px 2px;border-bottom:1px solid var(--lw-line)}.lw-lesson-rail article h3{font-size:12px;margin:6px 0}.lw-lesson-rail article p{font-size:11px;color:var(--lw-muted);margin:0 0 6px}.lw-steps button,.lw-quick button{width:100%;text-align:left;justify-content:flex-start;margin:3px 0;min-height:40px;background:transparent;font-size:12px}.lw-steps button{border-color:transparent;padding:8px 12px;font-weight:500}.lw-steps button:before{content:'›';color:#86abc7;margin-right:5px}.lw-quick{border-top:1px solid var(--lw-line);margin-top:16px;padding-top:10px}.lw-quick h3{font-size:14px;margin:8px 0 12px}.lw-quick p{font-size:10px;color:var(--lw-muted);margin:12px 0 0}.lw-bottom{margin-top:20px;padding-top:16px;border-top:1px solid var(--lw-line);display:flex;align-items:center;gap:16px;flex-wrap:wrap}.lw-notes-shortcut{display:flex;gap:10px;align-items:center;font-size:12px;color:var(--lw-muted)}.lw-notes-shortcut button{font-size:12px;min-height:36px}.lw-bottom>p{font-size:10px;flex:1;max-width:750px;color:var(--lw-muted);margin:0}.lw-bottom>.lw-small{margin-left:auto}.lw-minimized{padding:18px;color:var(--lw-muted);font-size:12px;margin:0;display:flex;align-items:center;justify-content:space-between;gap:16px}.lw-minimized button{font-size:12px}
.lw-fullscreen{overflow:hidden!important}.lw-workbench .lw-tool.lw-expanded{position:fixed;inset:12px;z-index:100;display:flex;flex-direction:column;background:#07131d;box-shadow:0 0 0 20px #02070d;overflow:auto}.lw-expanded #lwToolBody{flex:1;min-height:0;overflow:auto}.lw-expanded [role=tabpanel]:not([hidden]){height:100%;display:flex;flex-direction:column}.lw-expanded .lw-video{flex:1;aspect-ratio:auto;min-height:240px}.lw-expanded .lw-scratch{flex:1;height:auto;min-height:430px}.lw-expanded .lw-scratch iframe{min-width:1000px}.lw-expanded .lw-resource-foot{flex-shrink:0}.lw-expanded #lwNotesMount{flex:1;overflow:auto}
.lw-support .lw-workbench{margin-top:40px;border-top:1px solid #294255;padding-top:18px}.lw-support .lw-sidebar,.lw-support .lw-heading,.lw-support .lw-lesson-rail{display:none}.lw-support .lw-main{padding:20px;border:1px solid #294255;border-radius:9px}.lw-support .lw-grid{grid-template-columns:1fr}.lw-support .lw-tablist{margin-bottom:14px}
@media(min-width:1600px){.lw-grid{grid-template-columns:minmax(0,1fr) 320px}.lw-lesson-rail{padding:24px}.lw-steps button{font-size:13px}.lw-load-screen h3{font-size:22px}}
@media(max-width:1200px){.lw-theory .lw-workbench{grid-template-columns:190px minmax(0,1fr)}.lw-sidebar{padding:26px 12px}.lw-main{padding:28px 20px 20px}.lw-grid{grid-template-columns:minmax(0,1fr) 240px;gap:15px}.lw-toolbar{padding:12px}.lw-toolbar .lw-small{display:none}.lw-heading{gap:12px}.lw-course-controls{min-width:120px;font-size:10px}.lw-lesson-rail{padding:17px 12px}.lw-heading h1{font-size:27px}.lw-load-screen{padding:15px}.lw-load-screen h3{font-size:15px}}
@media(max-width:980px){.lw-theory .lw-workbench{display:block}.lw-sidebar{padding:12px 20px;border-bottom:1px solid var(--lw-line);border-right:0;display:flex;align-items:center;flex-wrap:wrap;gap:10px}.lw-brand{padding:0;flex:1}.lw-brand b{font-size:29px}.lw-sidebar .lw-menu{display:inline-flex!important;gap:22px}.lw-sidebar nav{display:none;width:100%;padding:10px 0}.lw-nav-open .lw-sidebar nav{display:block}.lw-main{padding:24px 20px}.lw-grid{grid-template-columns:minmax(0,1fr) 240px}.lw-heading h1{font-size:26px}.lw-video{margin:12px 12px 0}}
@media(max-width:700px){.lw-main{padding:22px 14px}.lw-grid{grid-template-columns:1fr}.lw-heading{flex-direction:column;gap:12px}.lw-heading h1{font-size:25px}.lw-course-controls{flex-direction:row;align-items:center;justify-content:space-between;width:100%;min-width:0}.lw-tablist button{font-size:13px;gap:6px;min-height:48px;padding:9px 4px}.lw-video{min-height:240px;margin:10px 10px 0}.lw-load-screen{padding:16px}.lw-video-mark{font-size:42px}.lw-lesson-rail{padding:18px}.lw-steps{display:grid;grid-template-columns:1fr 1fr}.lw-steps>div{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr}.lw-bottom{gap:12px}.lw-bottom p{flex-basis:100%;order:3}.lw-editor-note{font-size:11px}.lw-scratch{height:540px}.lw-file{padding:14px!important}.lw-files{padding:16px}.lw-workbench .lw-tool.lw-expanded{inset:4px}.lw-expanded .lw-video{min-height:220px}.lw-support .lw-main{padding:12px}}
@media(prefers-reduced-motion:reduce){.lw-workbench *{scroll-behavior:auto!important;transition:none!important}}
@media print{body.lw-theory #app{display:block!important}.lw-workbench{display:none!important}body.lw-theory #main{padding:0!important}}

.lw-assignment-list{margin:5px 0!important}.lw-steps .lw-assignment-list summary{background:transparent;border-color:transparent;font-weight:500}.lw-assignment-list button{font-size:11px}.lw-steps .lw-assignment-list{grid-column:1/-1}

.lw-video-source{display:flex;align-items:center;gap:8px;font-size:12px}.lw-video-source select{max-width:210px;background:#10202c;color:#e4edf7;border:1px solid #334d60;border-radius:6px;padding:7px;font:inherit}.lw-media-status{margin:0;padding:0 16px 10px;font-size:11px;color:#aebdce}.lw-video video{object-fit:contain;background:#000}.lw-resource-foot{flex-wrap:wrap;gap:10px}