:root{--accent:#2089ca;--accent-strong:#1672aa;--accent-soft:#2089ca1f;--accent-softer:#2089ca14;--bg-page:radial-gradient(circle at top left, #2089ca2e, transparent 34rem), linear-gradient(180deg, #f5fbff 0%, #eaf5fb 100%);--border:#2089ca24;--border-strong:#2089ca33;--danger-bg:#fff5f4;--danger-border:#c4322a38;--danger-text:#b42318;--field-bg:#f7fbff;--focus-ring:#2089ca59;--on-accent:#fff;--success-bg:#ecfdf3;--success-border:#d1fadf;--success-text:#027a48;--surface:#ffffffc7;--surface-solid:#fff;--surface-muted:#f7fbff;--surface-raised:#fff;--text:#315168;--text-heading:#0f2f49;--text-muted:#5f7c91;--text-soft:#667085;--text-utility:#24506a;--track:#e8f4fb;--video-bg:#071d2c;--warning-bg:#fef8e8;--warning-text:#b27b00;color:var(--text);background:var(--bg-page);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.5}:root[data-theme=dark]{--accent:#55b8ea;--accent-strong:#7dccf4;--accent-soft:#55b8ea2e;--accent-softer:#55b8ea1f;--bg-page:radial-gradient(circle at top left, #55b8ea33, transparent 32rem), linear-gradient(180deg, #081722 0%, #0d2230 100%);--border:#82caef2e;--border-strong:#82caef47;--danger-bg:#b4231829;--danger-border:#f8717147;--danger-text:#fda4af;--field-bg:#0d2738;--focus-ring:#55b8ea6b;--on-accent:#05131b;--success-bg:#027a4833;--success-border:#34d39942;--success-text:#86efac;--surface:#0d2230d1;--surface-solid:#102b3d;--surface-muted:#0d2738;--surface-raised:#123247;--text:#c9dce8;--text-heading:#f2f8fb;--text-muted:#9eb8c8;--text-soft:#a8bac6;--text-utility:#d7edf8;--track:#1e4357;--video-bg:#050c12;--warning-bg:#b27b002e;--warning-text:#fbbf24}*{box-sizing:border-box}body{min-width:320px;margin:0}button,input{letter-spacing:0}button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,video:focus-visible{outline:3px solid var(--focus-ring);outline-offset:2px}.app-shell{min-height:100svh;padding:30px}.topbar{justify-content:space-between;align-items:center;gap:20px;max-width:1440px;margin:0 auto 24px;display:flex}.brand,.brand-link-button{align-items:center;gap:14px;display:flex}.brand-link-button{cursor:pointer;text-align:left;background:0 0;border:none;outline:none;padding:0;font-family:inherit}.brand-mark{background:linear-gradient(135deg, var(--accent), var(--accent-strong));box-shadow:0 16px 34px var(--accent-soft);color:var(--on-accent);border-radius:50%;place-items:center;width:50px;height:50px;display:grid}.eyebrow,.detail-kicker,.metric-label,.status-label,.filter-header{color:var(--text-soft);letter-spacing:.06em;text-transform:uppercase;font-size:.78rem;font-weight:700}.topbar h1{color:var(--text-heading);margin:2px 0 0;font-size:clamp(1.8rem,3vw,2.75rem);line-height:1}.topbar-actions,.form-actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:10px;display:flex}.sr-only{white-space:nowrap;width:1px;height:1px;margin:-1px;position:absolute;overflow:hidden}.theme-selector{background:var(--surface);border:1px solid var(--border);color:var(--text-utility);border-radius:999px;flex:none;justify-content:center;align-items:center;width:42px;height:42px;min-height:42px;padding:0;font-weight:800;display:inline-flex;position:relative;overflow:hidden}.theme-selector select{appearance:none;color:inherit;cursor:pointer;font:inherit;opacity:0;background:0 0;border:0;outline:0;width:100%;position:absolute;inset:0}.complete-button{border-radius:999px;align-items:center;gap:8px;min-height:42px;font-weight:700;display:inline-flex}.utility-button{background:var(--surface);border:1px solid 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0;border:0;outline:0;width:100%;min-width:0}.filter-header{align-items:center;gap:8px;margin:0 0 10px;display:flex}.tag-select-dropdown{background:var(--surface);border:1px solid var(--border);color:var(--text-heading);cursor:pointer;appearance:none;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%235f7c91' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'></polyline></svg>");background-position:right 14px center;background-repeat:no-repeat;border-radius:999px;outline:0;width:100%;max-width:250px;min-height:40px;padding:0 40px 0 16px;font-size:.9rem;font-weight:700;transition:border-color .15s}.tag-select-dropdown:focus{border-color:var(--accent)}.segmented-control{background:var(--surface-muted);border:1px solid var(--border);border-radius:999px;gap:2px;padding:3px;display:flex}.segment{color:var(--text-muted);cursor:pointer;background:0 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p{color:var(--text);max-width:68ch;margin:0}.complete-button{background:var(--accent);box-shadow:0 14px 28px var(--border-strong);color:var(--on-accent);cursor:pointer;border:0;flex:none;padding:0 14px}.complete-button:disabled{cursor:wait;opacity:.68}.status-strip{border-top:1px solid var(--accent-soft);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.status-strip>div{gap:4px;min-height:82px;padding:18px 24px;display:grid}.status-strip strong{color:var(--text-heading)}.transcript-panel{border-top:1px solid var(--accent-soft);padding:20px 24px 4px}.transcript-heading{justify-content:space-between;align-items:center;gap:16px;margin-bottom:12px;display:flex}.transcript-heading>span{color:var(--text-heading);align-items:center;gap:8px;font-weight:800;display:inline-flex}.transcript-actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:10px;display:flex}.transcript-heading a{color:var(--accent);font-size:.9rem;font-weight:800;text-decoration:none}.transcript-toggle{min-height:36px}.transcript-list{scroll-behavior:smooth;gap:8px;max-height:250px;padding:4px;display:grid;overflow-y:auto}.transcript-cue{background:var(--surface-muted);border:1px solid var(--accent-soft);color:var(--text);cursor:pointer;text-align:left;border-radius:14px;grid-template-columns:58px minmax(0,1fr);gap:10px;padding:10px 12px;transition:all .2s ease-in-out;display:grid}.transcript-cue:hover{border-color:var(--accent);background:var(--surface-muted)}.transcript-cue.active{background:var(--accent-softer);border-color:var(--accent);color:var(--text-heading);box-shadow:0 2px 8px var(--accent-softer)}.transcript-time{color:var(--accent);font-weight:800}.transcript-cue strong{color:var(--text-heading);display:block}.related-strip{border-top:1px solid var(--accent-soft);padding:20px 24px 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var(--accent-soft);border-radius:18px;gap:12px;padding:14px;display:grid}.form-section>span{color:var(--text-heading);font-weight:900}.tag-picker{gap:10px;display:grid}.tag-picker-heading{color:var(--text-utility);justify-content:space-between;align-items:center;font-size:.86rem;font-weight:800;display:flex}.tag-checkbox-list,.tag-catalog-list{flex-wrap:wrap;gap:8px;display:flex}.tag-checkbox{background:var(--surface-muted);border:1px solid var(--accent-soft);border-radius:999px;flex-direction:row;align-items:center;gap:8px;min-height:36px;padding:0 12px;display:inline-flex!important}.tag-checkbox input{width:auto;min-height:auto}.tag-empty{color:var(--text-muted);margin:0;font-size:.88rem;font-weight:700}.tag-catalog-manager{grid-template-columns:minmax(0,1fr) auto;gap:8px;display:grid}.tag-catalog-item{background:var(--surface-muted);border:1px solid var(--accent-soft);color:var(--text-utility);border-radius:999px;align-items:center;gap:6px;min-height:32px;padding:0 6px 0 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6px;display:flex}.footer-title{color:var(--text-heading);align-items:center;gap:8px;margin-bottom:4px;font-weight:800;display:flex}.site-footer p{margin:0}.copyright{flex:none;font-weight:700}@media (width<=980px){.app-shell{padding:18px}.topbar,.admin-heading,.learning-detail,.site-footer{flex-direction:column;align-items:stretch}.library-toolbar,.related-list,.transcript-cue,.admin-layout,.form-grid{grid-template-columns:1fr}}@media (width<=640px){.overview,.status-strip,.video-grid{grid-template-columns:1fr}.library-summary{flex-direction:column;align-items:stretch}.library-summary-actions,.topbar-actions{justify-content:stretch}.utility-button,.complete-button,.danger-button{justify-content:center;width:100%}.theme-selector,.icon-button{width:42px}.admin-row{grid-template-columns:72px minmax(0,1fr)}.admin-row .utility-button,.admin-row .danger-button,.admin-row-actions{grid-column:1/-1}.poster-preview{grid-template-columns:1fr}.poster-preview img{width:100%}}.upload-progress-container{background:var(--surface-muted);border:1px solid var(--border);border-radius:12px;gap:8px;padding:12px;display:grid}.upload-progress-header{color:var(--text-heading);justify-content:space-between;font-size:.88rem;font-weight:800;display:flex}.upload-progress-bar{background:var(--track);border-radius:999px;width:100%;height:8px;overflow:hidden}.upload-progress-bar-fill{background:var(--accent);height:100%;transition:width .15s}.upload-success-message{background:var(--success-bg);border:1px solid var(--success-border);color:var(--success-text);border-radius:12px;align-items:center;gap:8px;padding:12px;font-size:.9rem;font-weight:700;display:flex}.user-profile-badge{align-items:center;gap:12px;display:flex}.user-profile-info{background:var(--accent-softer);border:1px solid var(--border);color:var(--text-utility);border-radius:999px;align-items:center;gap:8px;height:42px;padding:0 16px;font-size:.88rem;font-weight:700;display:flex}.compact-auth-button{min-height:42px;padding:0 16px}.login-prompt-panel{background:var(--surface);border:1px solid var(--border);text-align:center;border-radius:24px;justify-content:center;align-items:center;max-width:600px;min-height:380px;margin:40px auto;padding:40px;display:grid;box-shadow:0 18px 60px #00000024}.login-prompt-content{justify-items:center;gap:20px;display:grid}.brand-mark-large{background:linear-gradient(135deg, var(--accent), var(--accent-strong));box-shadow:0 20px 45px var(--accent-soft);color:var(--on-accent);border-radius:50%;place-items:center;width:90px;height:90px;display:grid}.login-prompt-content h2{color:var(--text-heading);margin:0;font-size:1.85rem;font-weight:900}.login-prompt-content p{color:var(--text-muted);max-width:44ch;margin:0 0 10px;font-size:1.02rem;line-height:1.5}.login-prompt-content .auth-message{color:#24506a;margin:-6px 0 0;font-size:.94rem}.admin-tabs{background:var(--surface-muted);border-radius:999px;gap:4px;padding:4px;display:flex}.admin-tab{color:var(--text-muted);cursor:pointer;background:0 0;border:0;border-radius:999px;min-height:36px;padding:0 16px;font-size:.88rem;font-weight:800;transition:all .15s}.admin-tab:hover{color:var(--text-utility)}.admin-tab.active{background:var(--surface-solid);color:var(--accent);box-shadow:0 4px 10px #0000001f}.analytics-dashboard{gap:20px;display:grid}.analytics-overview{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;display:grid}.analytics-card{background:var(--surface-solid);border:1px solid var(--accent-soft);text-align:left;border-radius:20px;padding:20px;box-shadow:0 8px 24px #00000014}.analytics-card .metric-value{color:var(--accent);font-size:1.85rem;font-weight:900}.analytics-card .metric-label{color:var(--text-muted);letter-spacing:.05em;text-transform:uppercase;font-size:.8rem;font-weight:700}.analytics-filters{background:var(--surface-solid);border:1px solid var(--accent-soft);border-radius:20px;padding:16px}.filter-group-row{flex-wrap:wrap;gap:16px;display:flex}.filter-group-row label{color:var(--text-utility);text-align:left;flex:1;gap:6px;min-width:200px;font-size:.84rem;font-weight:800;display:grid}.filter-group-row select{background:var(--surface-muted);border:1px solid var(--border-strong);color:var(--text-heading);font:inherit;border-radius:12px;outline:0;width:100%;height:42px;padding:0 10px}.analytics-table-container{background:var(--surface-solid);border:1px solid var(--accent-soft);border-radius:20px;overflow:hidden}.analytics-table{border-collapse:collapse;width:100%;font-size:.94rem}.analytics-table th,.analytics-table td{text-align:left;padding:14px 18px}.analytics-table th{background:var(--surface-muted);border-bottom:1px solid var(--accent-soft);color:var(--text-utility);letter-spacing:.05em;text-transform:uppercase;font-size:.8rem;font-weight:800}.analytics-table td{border-bottom:1px solid var(--accent-softer)}.analytics-table tr:last-child td{border-bottom:0}.user-name-text{color:var(--text-heading);display:block}.user-email-text{color:var(--text-muted);font-size:.82rem;display:block}.progress-cell{min-width:120px}.table-progress-bar{background:var(--track);border-radius:999px;width:100%;height:8px;overflow:hidden}.table-progress-bar-fill{background:var(--accent);height:100%}.percentage-text{color:var(--text-heading);font-weight:800}.status-badge{border-radius:999px;padding:4px 10px;font-size:.78rem;font-weight:800}.status-badge.complete{background:var(--success-bg);color:var(--success-text)}.status-badge.progress{background:var(--warning-bg);color:var(--warning-text)}.status-badge.unpublished{background:var(--surface-hover);border:1px solid var(--border);color:var(--text-muted)}.timestamp-text{color:var(--text-muted);font-size:.84rem}.table-empty{color:var(--text-muted);font-weight:700;text-align:center!important;padding:40px!important}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.shimmer-element{background:linear-gradient(90deg, var(--track) 25%, var(--surface-muted) 50%, var(--track) 75%);background-size:200% 100%;border-radius:4px;animation:1.5s linear infinite shimmer}.shimmer-card{pointer-events:none}.shimmer-card .poster-wrap{border-radius:18px 18px 0 0;width:100%;height:160px}.shimmer-text-title{width:70%;height:20px;margin-bottom:8px;display:block}.shimmer-text-desc{width:90%;height:14px;margin-bottom:12px;display:block}.shimmer-text-meta{width:50%;height:12px;display:block}@media (width<=640px){.analytics-overview{grid-template-columns:1fr}}@media (width>=1024px){.player-container.has-playlist{grid-template-columns:minmax(0,1fr) 350px;align-items:start}}.playlist-sidebar{background:var(--surface-solid);border:1px solid var(--accent-soft);border-radius:24px;flex-direction:column;gap:16px;padding:20px;display:flex;box-shadow:0 10px 30px #0000000a}.playlist-header{border-bottom:1px solid var(--border);padding-bottom:12px}.playlist-header h3{color:var(--text-heading);margin:0 0 6px;font-size:1.15rem;font-weight:800;line-height:1.25}.playlist-header p{color:var(--text-muted);margin:0;font-size:.84rem;font-weight:700}.playlist-items{flex-direction:column;gap:8px;max-height:540px;padding-right:4px;display:flex;overflow-y:auto}.playlist-items::-webkit-scrollbar{width:6px}.playlist-items::-webkit-scrollbar-track{background:0 0}.playlist-items::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:99px}.playlist-item{background:var(--surface-muted);cursor:pointer;text-align:left;border:1px solid #0000;border-radius:14px;align-items:center;gap:12px;width:100%;padding:10px 12px;transition:all .15s;display:flex}.playlist-item:hover{background:var(--accent-softer)}.playlist-item.active{background:var(--accent-soft);border-color:var(--accent)}.playlist-item-info{flex-direction:column;flex:1;display:flex}.playlist-item-info strong{color:var(--text-heading);font-size:.88rem;line-height:1.3}.playlist-item-info span{color:var(--text-muted);margin-top:4px;font-size:.76rem;font-weight:600}.required-badge{background:var(--danger-bg);color:var(--danger-text);border:1px solid var(--danger-border);z-index:10;text-transform:uppercase;letter-spacing:.04em;border-radius:10px;padding:4px 10px;font-size:.7rem;font-weight:800;position:absolute;top:12px;left:12px;box-shadow:0 4px 16px #00000014}:root[data-theme=dark] .required-badge{color:#fff;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#b91c1ce0;border-color:#ef444499}.video-hero{background:var(--video-bg);border-radius:24px;min-width:0;overflow:hidden;box-shadow:0 12px 40px #00000014}.video-hero-active{box-shadow:none;border-radius:0}.player-container{grid-template-columns:1fr;gap:24px;width:100%;max-width:1440px;display:grid}@media (width>=1024px){.player-container.has-playlist{grid-template-columns:minmax(0,1fr) 350px;grid-template-areas:"video sidebar""details sidebar";align-items:start}.player-container.has-playlist .video-hero{grid-area:video}.player-container.has-playlist .player-panel{grid-area:details}.player-container.has-playlist .playlist-sidebar{grid-area:sidebar}}.player-page.theater-active{width:100%;max-width:100%}.theater-active{background:#050c12!important}.theater-active .app-shell{color:#c9dce8!important;background:#050c12!important}.theater-active .back-button{color:#c9dce8;background:#ffffff0f;border-color:#ffffff1a}.theater-active .topbar h1,.theater-active .topbar .eyebrow,.theater-active .topbar .brand-mark,.theater-active .topbar-actions{color:#c9dce8!important}.player-container.theater-layout{gap:24px;grid-template-columns:1fr!important;grid-template-areas:none!important}.theater-layout .video-hero{background:#000;border-radius:0;grid-column:1/-1;justify-content:center;align-items:center;width:100vw;max-height:75vh;margin-left:calc(50% - 50vw);margin-right:calc(50% - 50vw);display:flex;grid-area:auto!important}.theater-layout .video-hero .video-frame{width:100%;max-width:1400px;max-height:75vh}.theater-layout .video-hero .video-frame video{object-fit:contain;max-height:75vh}.theater-layout .player-panel{width:100%;max-width:1180px;margin:0 auto;padding:0 30px;box-shadow:none!important;background:0 0!important;border:none!important;border-radius:0!important;grid-area:auto!important}.theater-layout .playlist-sidebar{width:100%;max-width:1180px;margin:0 auto 40px;padding:20px;box-shadow:none!important;background:#0d2230!important;border:1px solid #82caef26!important;grid-area:auto!important}