.preview-controls{display:flex;gap:16px;flex-wrap:wrap;align-items:end;margin:24px 0}.preview-controls label{display:grid;gap:8px;font-size:13px;flex:1;min-width:150px}.preview-controls select{min-height:44px;padding:10px;background:var(--surface);border:1px solid var(--line-2);border-radius:8px;color:var(--text);font:inherit}.preview-viewport{border:1px solid var(--line-2);border-radius:16px;overflow:hidden;background:var(--surface);margin:28px auto}.preview-viewport.mobile{max-width:390px}.student-preview-frame{width:100%;height:1000px;border:0;display:block}.preview-surface{--nav-h:0px}.preview-surface .staff-main{padding:24px;max-width:1500px}.simulation-banner{border:1px solid var(--accent);border-radius:6px;padding:12px 16px;color:var(--text-2);font-size:12px}.preview-stage{min-height:310px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:28px;gap:16px;border-radius:12px;background:var(--surface-2);border:1px solid var(--line)}.preview-stage h2{font-size:26px;line-height:1.3}.preview-stage p{color:var(--text-2);max-width:480px;line-height:1.7}.student-empty{border:1px solid var(--line);border-radius:14px;background:var(--surface);padding:36px;line-height:1.8}.student-empty h2{margin-bottom:12px}.student-empty .btn{margin-top:20px}.course-finished{border-left:3px solid var(--accent);padding:22px 26px;background:var(--surface-2);margin-bottom:24px}.course-finished h2{font-size:23px;margin-bottom:8px}.preview-loading>div{height:280px;background:var(--surface-2);border-radius:12px}.preview-loading p{margin:16px 0}.learning-course-name{font-size:18px;line-height:1.4;margin:18px 0}.learning-overview{font-size:12px;color:var(--text-3)}.learning-main .staff-heading h1{font-size:clamp(28px,3vw,42px);letter-spacing:-.025em}.learning-main .staff-heading>p{line-height:1.8;max-width:750px}.learning-main .protected-player{border-radius:12px;background:var(--surface-2);padding:24px}.learning-main .protected-player video{width:100%;aspect-ratio:16/9;background:#111}.learning-main .protected-player [data-player-status]{line-height:1.6}.learning-main .protected-player [data-private-notes]{white-space:pre-wrap}.learning-main .protected-player [data-private-notes]:empty{display:none}.learning-main .protected-player .btn{margin-bottom:12px}.learning-main .learning-sidebar{border-radius:12px}.library-main{max-width:1250px;margin:auto;padding:54px 32px 90px}.library-heading{display:flex;gap:24px;justify-content:space-between;align-items:start;margin-bottom:36px}.library-heading h1{font-size:44px;letter-spacing:-.03em;margin:12px 0}.library-heading p{color:var(--text-2);line-height:1.7}.library-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}.learning-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:24px}.learning-card{border:1px solid var(--line);border-radius:16px;background:var(--surface);padding:30px;display:flex;flex-direction:column;align-items:start;gap:16px}.learning-card h3{font-size:24px;line-height:1.3}.learning-card progress{width:100%;accent-color:var(--accent);height:8px}.learning-card p{color:var(--text-2);line-height:1.6}.library-secondary{margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}.library-secondary p{margin:14px 0;color:var(--text-2);line-height:1.8}.library-main :focus-visible,.preview-controls :focus-visible{outline:3px solid var(--focus-accent);outline-offset:3px}.public-learning-handoff{padding:16px 20px;border:1px solid var(--line);border-radius:10px;margin:20px 0;display:flex;align-items:center;gap:16px;flex-wrap:wrap;font-size:14px}.public-learning-handoff p{flex:1;min-width:180px;color:var(--text-2);line-height:1.6}
@media(max-width:760px){.library-main{padding:30px 18px 54px}.library-heading{display:block}.library-heading h1{font-size:34px}.library-actions{margin-top:20px}.learning-cards{grid-template-columns:1fr}.learning-card,.student-empty{padding:24px}.preview-surface .staff-main{padding:16px}.preview-stage{min-height:220px;padding:20px}.preview-stage h2{font-size:22px}.learning-main .protected-player{padding:14px}.student-preview-frame{height:1250px}.preview-controls label{min-width:130px}.library-heading .auth-email{overflow-wrap:anywhere}}
.learning-main .player-placeholder{position:relative;isolation:isolate;aspect-ratio:16/9;min-height:170px;display:grid;place-items:center;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--bg)}.learning-main .player-placeholder img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.18;z-index:-1}.learning-main .player-placeholder .btn{background:var(--surface);margin:16px}.learning-main [data-loaded=true] .player-placeholder{aspect-ratio:auto;min-height:0;display:block;border:0;background:none}.learning-main [data-loaded=true] .player-placeholder img{display:none}.learning-main [data-loaded=true] .player-placeholder .btn{margin:16px 0 8px}.course-finished[hidden]{display:none}
.preview-controls select{width:100%;min-width:0}.preview-controls label:first-child{flex:2;min-width:240px}

.recent-comments{margin-top:40px}.recent-comments-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px}.recent-comments-heading h2{font-size:24px;margin:0}.recent-comments-heading a{font-size:13px;white-space:nowrap}.recent-comments-list{list-style:none;margin:0;padding:0;display:grid;gap:18px}.recent-comment{padding:24px 28px;border:1px solid var(--line);border-radius:14px;background:var(--surface)}.recent-comment header{display:flex;align-items:baseline;flex-wrap:wrap;gap:6px 14px}.recent-comment header>a{font-size:16px;font-weight:600;color:var(--text);overflow-wrap:anywhere}.recent-comment header>span{font-size:13px;color:var(--text-3)}.recent-comment time,.recent-comment small{font-size:12px;color:var(--text-3)}.recent-comment header time{margin-left:auto}.recent-comment-body{white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px;line-height:1.7;color:var(--text-2);margin:16px 0}.recent-comment-replies>span{font-size:12px;font-weight:600;color:var(--text-3)}.recent-comment-replies blockquote{margin:10px 0 16px;padding:0 0 0 16px;border-left:1px solid var(--line);font-size:13px;line-height:1.6;color:var(--text-2)}.recent-comment-replies blockquote p{margin:6px 0;overflow-wrap:anywhere;white-space:pre-wrap}.recent-comment-replies blockquote p:first-child{display:flex;gap:10px;flex-wrap:wrap}.recent-comment-jump{display:inline-block;margin-top:12px;font-size:13px;font-weight:600}.recent-comments-empty{padding:28px;border:1px solid var(--line);border-radius:14px;background:var(--surface);color:var(--text-2);line-height:1.8}.recent-comments-empty a{display:inline-block;margin-top:12px}.recent-comments-pagination{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:24px;font-size:14px}@media(max-width:600px){.recent-comments-heading{align-items:flex-start;flex-direction:column;gap:8px}.recent-comment{padding:20px}.recent-comment header{display:grid;gap:6px}.recent-comment header time{margin-left:0}.recent-comments-pagination{flex-wrap:wrap}}