body{margin:0;background:#0a1018;color:#f5f7fb;font-family:'Be Vietnam Pro',sans-serif}*{box-sizing:border-box}button,input,textarea,select{font:inherit}button,a{touch-action:manipulation}a{color:inherit;text-decoration:none}.public-header{border-bottom:1px solid #253245;background:#101722}.public-nav{max-width:1200px;margin:auto;display:flex;align-items:center;gap:28px;padding:18px 24px}.public-brand{display:flex;align-items:center;gap:12px;margin-right:auto;font-weight:800}.public-brand img{width:48px;height:48px;object-fit:contain;border-radius:12px;background:white}.public-nav a.active{color:#21c99b}.public-main{max-width:1200px;margin:auto;padding:48px 24px}.public-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid #314158;border-radius:10px;padding:12px 18px;min-height:44px;background:#172131;color:white;cursor:pointer;white-space:nowrap}.public-btn.primary{background:#21c99b;color:#05251c;border-color:#21c99b;font-weight:700}.public-btn.danger{color:#ff9aa9}.public-hero{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:center}.public-main h1{font-size:46px;line-height:1.25;letter-spacing:-1.2px;margin:18px 0}.accent{color:#21c99b}.public-main p{color:#9cabc0;line-height:1.8}.badge{display:inline-block;padding:8px 12px;background:#10352f;color:#50dfbc;border-radius:8px;font-size:12px}.public-actions{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0}.public-panel{background:#121a28;border:1px solid #253245;border-radius:18px;padding:24px}.mini-board{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.mini-column{background:#0c1420;border-radius:10px;padding:12px;font-size:12px}.mini-card{padding:14px 10px;background:#1b2b3c;border:1px solid #304359;border-radius:8px;margin-top:12px}.mini-card small{display:block;color:#9cabc0;margin-top:6px}.section-title{text-align:center;font-size:28px;margin:56px 0 26px}.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.feature-icon{font-size:28px;color:#21c99b}.feature-grid h3{font-size:17px}.feature-grid p{font-size:14px}.audience{display:grid;grid-template-columns:320px 1fr;gap:22px}.audience-tabs{display:grid;gap:12px}.audience-tabs button{text-align:left;white-space:normal}.audience-tabs button.active{border-color:#21c99b;background:#10312d;color:#50dfbc}.benefits{line-height:2.2;color:#b3c0d1;padding-left:20px}.public-cta{margin-top:36px;display:flex;align-items:center;justify-content:space-between;gap:20px}.public-footer{border-top:1px solid #253245;padding:24px;text-align:center;color:#9cabc0;font-size:13px}.library-tools{display:flex;gap:12px;margin:24px 0;flex-wrap:wrap}.public-input{display:block;width:100%;border:1px solid #304158;background:#0d1521;border-radius:10px;color:white;padding:13px;min-height:46px}.public-input:focus{outline:2px solid #21c99b;outline-offset:2px}.library-layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(280px,1fr);gap:24px;align-items:start}.lesson-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.lesson-card{padding:14px;min-width:0}.video-cover{position:relative;width:100%;aspect-ratio:16/9;display:block;border:0;padding:0;border-radius:10px;overflow:hidden;background:#1c2b3c;cursor:pointer}.video-cover img{width:100%;height:100%;object-fit:cover}.video-cover span{position:absolute;inset:0;display:grid;place-items:center;color:white;font-size:42px;text-shadow:0 2px 8px black}.video-frame{width:100%;aspect-ratio:16/9;border:0;border-radius:10px}.lesson-card h3{font-size:17px;line-height:1.6}.lesson-note{background:#0e1825;border:1px solid #253245;padding:14px;border-radius:10px;font-size:13px;white-space:pre-wrap;overflow-wrap:anywhere}.support-form{display:grid;gap:14px}.support-form label,.lesson-form label{display:grid;gap:8px;font-size:13px;color:#b6c4d6}.admin-zone{margin-top:28px;border-style:dashed}.drop-zone{padding:24px;text-align:center;border:1px dashed #647c98;border-radius:12px;margin-top:16px}.drop-zone.over{border-color:#21c99b;background:#10312d}.admin-list{display:grid;gap:12px;margin-top:16px}.admin-row{display:flex;align-items:center;gap:12px;border-bottom:1px solid #253245;padding-bottom:12px}.admin-row strong{flex:1;overflow-wrap:anywhere}.request-card{margin-top:12px;padding:16px;border:1px solid #304158;border-radius:10px;white-space:pre-wrap;overflow-wrap:anywhere}dialog{width:min(580px,calc(100% - 32px));max-height:90dvh;overflow:auto;background:#121a28;color:white;border:1px solid #304158;border-radius:18px;padding:24px}dialog::backdrop{background:#000b}.lesson-form{display:grid;gap:18px}#notice:not(:empty){position:fixed;bottom:24px;left:50%;transform:translateX(-50%);padding:14px 22px;background:#153c32;border:1px solid #21c99b;border-radius:10px;z-index:100;max-width:90%;box-shadow:0 10px 30px #0007}.empty{padding:30px;color:#a8b8ca}.local-note{font-size:12px;color:#b6c4d6;margin-top:12px}.public-nav-toggle{display:none}
.topic-select-row{display:flex;align-items:center;gap:10px}.topic-select-row select{min-width:0}.topic-creator{padding:16px;border:1px solid #304158;border-radius:12px;background:#0d1521}.topic-creator[hidden]{display:none}.topic-creator small{color:#a8b8ca;line-height:1.7}.topic-creator .public-actions{margin:12px 0}.lesson-list-heading,.lesson-management-row{display:grid!important;grid-template-columns:minmax(0,1fr) minmax(150px,220px) auto;align-items:center;gap:20px}.lesson-list-heading{color:#a8b8ca;font-size:12px;padding:12px 0;border-bottom:1px solid #304158}.lesson-identity{display:flex;gap:16px;align-items:center;min-width:0}.lesson-identity strong{overflow-wrap:anywhere}.lesson-identity img{object-fit:cover;border-radius:8px;flex-shrink:0}.lesson-topic-column small{display:none}.lesson-topic-column .badge{white-space:normal;overflow-wrap:anywhere}.lesson-row-actions{display:flex;gap:10px}.management-fields{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:18px;white-space:normal}.management-fields>div{display:grid;gap:8px}.management-fields small,.management-note small{color:#9cabc0;font-size:12px}.management-note{border-top:1px solid #304158;margin-top:16px;padding-top:14px}.management-note p{white-space:pre-wrap;color:#d3ddea;margin:8px 0 0}
@media(max-width:720px){.lesson-list-heading{display:none!important}.lesson-management-row{grid-template-columns:1fr!important;gap:12px}.lesson-topic-column small{display:inline-block;margin-right:10px;color:#99abc0}.lesson-row-actions{justify-content:flex-end}.topic-select-row{flex-wrap:wrap}.topic-select-row select{flex-basis:100%}.topic-select-row button{width:100%}}
@media(max-width:800px){.management-fields{grid-template-columns:1fr 1fr}.public-hero{grid-template-columns:1fr;gap:24px}.public-main h1{font-size:34px}.feature-grid{grid-template-columns:repeat(2,1fr)}.audience{grid-template-columns:1fr}.library-layout{grid-template-columns:1fr}.public-main{padding:28px 18px}.public-nav{gap:14px;padding:12px 18px;flex-wrap:wrap}.public-nav-toggle{display:inline-flex}.public-nav .nav-link{display:none}.public-nav.open .nav-link{display:block;width:100%;padding:10px}.public-nav .login-link{font-size:12px;padding:10px}.public-brand{font-size:14px}.public-brand img{width:38px;height:38px}.public-cta{align-items:flex-start;flex-direction:column}.section-title{font-size:24px;margin-top:36px}.admin-row{flex-wrap:wrap}.admin-row strong{flex-basis:100%}}
.public-library-only{grid-template-columns:1fr}.public-library-only .lesson-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.inline-question{margin-top:14px;display:grid;gap:8px}.inline-question label{font-size:12px;color:#aebdd0}.question-controls{display:flex;gap:10px;align-items:center}.question-controls textarea{min-height:58px;resize:vertical;font-size:13px;padding:10px}.question-controls button{font-size:12px;padding:10px 14px}.contact-dialog{position:fixed;inset:0;margin:auto;width:min(480px,calc(100vw - 32px));max-height:calc(100dvh - 40px);padding:26px;box-shadow:0 24px 90px #0009;animation:contact-enter .22s cubic-bezier(.2,.8,.2,1)}.contact-dialog::backdrop{background:#030914ba;backdrop-filter:blur(4px);animation:backdrop-enter .2s ease}.contact-heading{display:flex;justify-content:space-between;align-items:start;gap:16px}.contact-heading h2{margin:12px 0 0;font-size:24px}.contact-description{margin:0;color:#aebdd0;font-size:13px;line-height:1.7}.contact-context{border:1px solid #304158;background:#0c1520;padding:14px;border-radius:12px;font-size:13px}.contact-context p{color:#9cabc0;white-space:pre-wrap;overflow-wrap:anywhere;max-height:110px;overflow:auto;margin-bottom:0}.contact-consent{font-size:12px!important;line-height:1.7}.contact-form .public-actions{margin:0;justify-content:flex-end}.contact-form small{font-size:11px;color:#98abc2;line-height:1.7}@keyframes contact-enter{from{opacity:0;transform:translateY(12px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes backdrop-enter{from{opacity:0}to{opacity:1}}@media(prefers-reduced-motion:reduce){.contact-dialog,.contact-dialog::backdrop{animation:none}}
@media(max-width:480px){.lesson-grid,.public-library-only .lesson-grid{grid-template-columns:1fr}.public-panel{padding:18px}.mini-column{padding:8px;font-size:10px}.mini-card{padding:10px 6px}.public-main h1{font-size:30px}.feature-grid{gap:10px}.feature-grid h3{font-size:14px}.feature-grid p{font-size:12px}.contact-dialog{padding:20px}.question-controls{gap:8px}}
.lesson-management-page .lesson-management-list{--lesson-columns:minmax(0,1.25fr) minmax(110px,.65fr) minmax(0,1fr) 164px;gap:0;margin-top:20px}
.lesson-management-page .lesson-list-heading,.lesson-management-page .lesson-management-row{grid-template-columns:var(--lesson-columns)!important;gap:24px;align-items:center;padding:18px 0;margin:0}
.lesson-management-page .lesson-list-heading{padding:12px 0;font-size:12px;font-weight:500}
.lesson-management-page .lesson-list-heading>span:nth-child(2){text-align:left}
.lesson-management-page .lesson-list-heading>span:last-child{text-align:right}
.lesson-management-page .lesson-topic-column{min-width:0;justify-self:start;width:100%;display:flex;align-items:center}
.lesson-management-page .lesson-topic-column .badge{padding:7px 11px;border:1px solid #235448;border-radius:8px;background:#123029;color:#7adbbd;font-size:12px;line-height:1.5;max-width:100%;letter-spacing:0}
.lesson-management-page .lesson-row-actions{justify-content:flex-end;gap:8px;width:164px}

/* Curriculum management */
.curriculum-admin-title{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:24px}.curriculum-admin-title h1{margin:10px 0 5px}.curriculum-admin-title p{margin:0}.curriculum-admin-list{display:grid;gap:20px}.curriculum-course{overflow:hidden;border:1px solid #2d3b50;border-radius:18px;background:#111a28}.curriculum-course-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding:22px 24px;background:linear-gradient(120deg,#172333,#10231f)}.curriculum-course-head h2{margin:10px 0 4px}.curriculum-course-head p,.curriculum-chapter header p{margin:0;color:#9cabc0}.curriculum-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px;flex-wrap:wrap}.curriculum-chapters{display:grid}.curriculum-chapter{border-top:1px solid #28364a;padding:18px 22px}.curriculum-chapter>header{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:14px}.curriculum-chapter>header small{color:#49d5b3}.curriculum-chapter h3{margin:3px 0;font-size:18px}.curriculum-lessons{display:grid;border:1px solid #27364a;border-radius:13px;overflow:hidden}.curriculum-lesson{display:grid;grid-template-columns:112px 34px minmax(0,1fr) auto;align-items:center;gap:12px;padding:12px;background:#0d1521;border-bottom:1px solid #263449}.curriculum-lesson:last-child{border-bottom:0}.curriculum-lesson img{border-radius:8px;object-fit:cover}.curriculum-lesson>div:not(.curriculum-actions){display:grid;gap:4px;min-width:0}.curriculum-lesson b,.curriculum-lesson small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.curriculum-lesson small{color:#93a4ba}.curriculum-index{color:#54dabc;font-weight:700}.curriculum-empty{margin:0;padding:20px;color:#91a1b6;text-align:center}.curriculum-empty-main{border:1px dashed #40526b;border-radius:16px}.curriculum-requests{margin-top:28px}.curriculum-requests>p{margin-top:-8px}.curriculum-requests #request-search{margin:18px 0}

/* Public course reader */
.course-reader{max-width:1200px;padding-top:42px;padding-bottom:64px}.course-reader-title{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:30px}.course-eyebrow{display:block;color:#54dcb9;font-size:11px;font-weight:800;letter-spacing:2.2px}.course-reader-title h1{max-width:760px;font-size:32px;line-height:1.25;letter-spacing:-.6px;margin:12px 0 5px}.course-reader-title p{max-width:720px;margin:0;font-size:13px;line-height:1.65;color:#8292a8}.course-reader-title label{display:grid;gap:6px;width:min(300px,100%);color:#9cabc0;font-size:12px}.course-learning-shell{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:28px;align-items:start}.course-learning-main{min-width:0}.course-lesson-view{padding:0;background:transparent;border:0}.course-lesson-view>.video-cover,.course-lesson-view>.lesson-player{border:1px solid #27374c;border-radius:14px;box-shadow:0 18px 48px #02060d40}.course-play-label{display:flex!important;inset:0!important;align-items:center;justify-content:center;background:linear-gradient(180deg,#02050b35,#02050b72)!important;text-shadow:none!important}.course-play-label b{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 22px;border-radius:999px;background:#21c99b;color:#05251c;font-size:13px;box-shadow:0 12px 34px #21c99b38}.course-play-label svg{width:18px;height:18px;fill:currentColor}.course-lesson-heading{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:26px 0 20px}.course-lesson-heading>div{min-width:0}.course-lesson-heading small{color:#71839b;font-size:11px;font-weight:700;letter-spacing:.5px}.course-lesson-heading h3{margin:7px 0 2px;font-size:25px;line-height:1.35;letter-spacing:-.35px}.course-lesson-heading p{margin:0;font-size:12px;color:#7f91a8}.course-lesson-heading .public-btn{padding-inline:16px}.course-lesson-tabs{display:flex;gap:28px;border-bottom:1px solid #263449;color:#8fa0b5;font-size:12px}.course-lesson-tabs span{padding:12px 0}.course-lesson-tabs .active{color:#40d5ae;border-bottom:2px solid #28c89d}.course-note{margin-top:0;border:0;border-radius:0;padding:24px;background:#121b29}.course-note p{margin:10px 0 0;color:#b4c0d1;line-height:1.8}.course-question{margin-top:16px;padding:20px;border:1px solid #29384d;border-radius:14px;background:#101823}.course-outline{position:sticky;top:18px;max-height:calc(100vh - 36px);overflow:auto;scrollbar-width:thin;scrollbar-color:#34465e transparent;border:1px solid #2b394d;border-radius:14px;background:#121a28;box-shadow:0 18px 48px #02060d2e}.course-outline>header{position:sticky;top:0;z-index:1;padding:20px;background:#121a28;border-bottom:1px solid #263449}.course-outline h2{margin:0 0 4px;font-size:17px}.course-outline>header small{color:#899ab0;font-size:11px}.course-progress{height:5px;margin-top:14px;overflow:hidden;border-radius:99px;background:#26364b}.course-progress i{display:block;height:100%;border-radius:inherit;background:#28c99e}.course-outline-chapter{border-bottom:1px solid #273548}.course-outline-chapter:last-child{border-bottom:0}.course-outline-chapter>header{display:grid;gap:5px;padding:17px 18px 11px}.course-outline-chapter>header small{color:#6f849f;font-size:10px;text-transform:uppercase;letter-spacing:.5px}.course-outline-chapter>header b{font-size:13px;line-height:1.5}.course-outline-lesson{width:100%;display:grid;grid-template-columns:30px minmax(0,1fr);align-items:center;gap:9px;padding:11px 16px;border:0;border-left:3px solid transparent;background:transparent;color:#91a0b5;text-align:left;cursor:pointer}.course-outline-lesson:hover{background:#192435;color:#edf5ff}.course-outline-lesson.active{border-left-color:#27c99e;background:#17382f;color:#65e2c0}.course-outline-lesson>span:first-child{width:28px;height:28px;display:grid;place-items:center;border-radius:50%;background:#223147;font-size:11px}.course-outline-lesson.active>span:first-child{background:#19b98f;color:#05251b}.course-outline-lesson>span:last-child{display:grid;gap:3px;min-width:0}.course-outline-lesson b{font-size:11px;line-height:1.45}.course-outline-lesson small{font-size:9px;color:#74869e}

@media(max-width:900px){.course-learning-shell{grid-template-columns:1fr}.course-outline{position:static;max-height:none}.course-reader-title{align-items:flex-start;flex-direction:column}.course-reader-title label{width:100%}.curriculum-course-head,.curriculum-chapter>header{align-items:flex-start;flex-direction:column}.curriculum-actions{justify-content:flex-start}.curriculum-lesson{grid-template-columns:88px 28px minmax(0,1fr)}.curriculum-lesson img{width:88px;height:50px}.curriculum-lesson>.curriculum-actions{grid-column:1/-1;border-top:1px solid #27364a;padding-top:10px}.course-lesson-heading{align-items:flex-start;flex-direction:column}.course-lesson-heading .public-btn{width:100%}}
@media(max-width:600px){.curriculum-admin-title{align-items:flex-start;flex-direction:column}.curriculum-admin-title .public-btn{width:100%}.curriculum-course-head,.curriculum-chapter{padding:16px}.curriculum-lesson{grid-template-columns:62px 24px minmax(0,1fr);gap:8px}.curriculum-lesson img{width:62px;height:40px}.curriculum-actions .public-btn{min-height:40px;flex:1;padding:8px}.course-reader-title h1{font-size:27px}.course-learning-shell{gap:14px}.course-lesson-view>.video-cover,.course-lesson-view>.lesson-player{border-radius:12px}.course-play-label b{padding:11px 16px;font-size:12px}.course-lesson-heading{padding:18px 0 14px}.course-lesson-heading h3{font-size:21px}.course-question{padding:14px}.course-question .question-controls{align-items:stretch;flex-direction:column}.course-question .question-controls button{width:100%}}
.lesson-management-page .lesson-row-actions .public-btn{width:78px;padding:9px 12px;font-size:13px;border-radius:9px}
.lesson-management-page .lesson-identity{gap:14px}.lesson-management-page .lesson-identity img{width:96px;height:54px;object-fit:cover}.lesson-management-page .lesson-identity strong{font-size:15px;line-height:1.6}.lesson-management-page .lesson-identity small{font-size:12px;font-weight:400}
.lesson-management-page .public-main{padding:30px 24px;max-width:1280px}.lesson-management-page .public-main h1{font-size:32px;line-height:1.3;letter-spacing:-.5px}.lesson-management-page .public-panel h2{font-size:20px;margin:0}.lesson-management-page .public-panel .public-cta{gap:16px;margin-bottom:18px}.lesson-management-page .drop-zone{font-size:13px;line-height:1.7;padding:20px;color:#a9bad0;background:#0d1623;border-color:#3b526c}
.lesson-management-page .lesson-instructor-column{min-width:0}.lesson-management-page .lesson-instructor-column>small{display:none}.lesson-management-page .lesson-instructor-column p{margin:0;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.7;font-size:13px;color:#becbdd}.lesson-management-page .lesson-instructor-column p.muted{color:#8294ad;font-style:italic}.lesson-management-page .public-btn{transition:background-color .15s ease,border-color .15s ease}.lesson-management-page .public-btn:hover{border-color:#66809c}.lesson-management-page .lesson-management-row{align-items:start}.lesson-management-page .lesson-row-actions{align-self:center}.lesson-management-page .lesson-topic-column{padding-top:4px}
@media(min-width:721px) and (max-width:1100px){.lesson-management-page .lesson-management-list{--lesson-columns:minmax(0,1fr) 110px minmax(0,1fr) 132px}.lesson-management-page .lesson-list-heading,.lesson-management-page .lesson-management-row{gap:12px}.lesson-management-page .lesson-row-actions{width:132px}.lesson-management-page .lesson-row-actions .public-btn{width:62px;padding:9px 6px}.lesson-management-page .lesson-identity img{width:64px;height:36px}.lesson-management-page .lesson-identity{gap:10px}}
@media(max-width:720px){.lesson-management-page .lesson-instructor-column{background:#121e2e;border:1px solid #25364c;border-radius:9px;padding:12px}.lesson-management-page .lesson-instructor-column>small{display:block;font-size:11px;color:#94aac4;margin-bottom:7px}.lesson-management-page .lesson-instructor-column p{font-size:12px;line-height:1.75}.lesson-management-page .public-actions{gap:8px}.lesson-management-page .public-actions .public-btn{flex:1;min-width:0;padding:10px 12px;white-space:normal}.lesson-management-page .request-card>.public-btn{font-size:12px;min-height:44px;padding:9px 14px}.contact-dialog .public-actions{display:flex;gap:8px}.contact-dialog .public-actions .public-btn{flex:1;min-width:0;white-space:normal;line-height:1.4;padding:11px 12px}.topic-creator .public-actions{display:flex;gap:8px}.topic-creator .public-actions .public-btn{flex:1;min-width:0;white-space:normal;font-size:12px}}
@media(max-width:720px){.lesson-management-page .public-main{padding:20px 14px 32px}.lesson-management-page .public-main h1{font-size:26px}.lesson-management-page .public-main>p{font-size:13px;line-height:1.7}.lesson-management-page .public-panel{padding:16px;border-radius:14px}.lesson-management-page .public-panel h2{font-size:18px}.lesson-management-page .public-panel .public-cta{flex-direction:row;align-items:center;gap:12px}.lesson-management-page #add-video{font-size:12px;min-height:44px;padding:10px 12px}.lesson-management-page .drop-zone{font-size:12px;padding:14px;margin-top:0}.lesson-management-page .lesson-management-list{display:grid;gap:12px;margin-top:16px}.lesson-management-page .lesson-list-heading{display:none!important}.lesson-management-page .lesson-management-row{grid-template-columns:minmax(0,1fr)!important;gap:12px;padding:14px;border:1px solid #2b3a50;border-radius:12px;background:#0e1724}.lesson-management-page .lesson-identity{align-items:flex-start;gap:12px}.lesson-management-page .lesson-identity img{width:88px;height:50px}.lesson-management-page .lesson-identity strong{font-size:14px;line-height:1.5}.lesson-management-page .lesson-topic-column{gap:10px;flex-wrap:wrap}.lesson-management-page .lesson-topic-column small{display:block;font-size:12px;margin:0;color:#95a8c1}.lesson-management-page .lesson-row-actions{width:100%;border-top:1px solid #26364a;padding-top:12px;justify-content:stretch}.lesson-management-page .lesson-row-actions .public-btn{width:auto;flex:1;min-height:44px;font-size:13px}.lesson-management-page .management-fields{gap:14px}.lesson-management-page .request-card{padding:14px}.lesson-management-page .management-fields b{font-size:13px;line-height:1.6}.lesson-management-page .management-note p{font-size:13px}}
@media(max-width:380px){.lesson-management-page .public-panel .public-cta{flex-wrap:wrap}.lesson-management-page #add-video{width:100%}.lesson-management-page .management-fields{grid-template-columns:1fr}}
.public-main.library-page{padding-top:28px;padding-bottom:36px}.library-page .library-intro{margin-bottom:20px}.library-page .library-intro>.badge{font-size:10px;line-height:1.4;padding:5px 9px;border-radius:6px;letter-spacing:.5px}.library-page .library-intro h1{font-size:32px;line-height:1.3;letter-spacing:-.5px;margin:12px 0 8px}.library-page .library-intro p{font-size:14px;line-height:1.65;margin:0;color:#9eafc5}.library-page .library-tools{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:12px;margin:0 0 24px;padding:14px;border:1px solid #26354a;border-radius:12px;background:#101925}.library-page .library-tools .public-input{max-width:none!important;width:100%;min-width:0;min-height:44px;padding:10px 12px;font-size:13px;border-radius:8px}.library-page .lesson-card{padding:12px;border-radius:14px}.library-page .lesson-card h3{margin:14px 0 6px;font-size:17px}.library-page .lesson-card>p{font-size:12px;margin:0 0 12px}.library-page .lesson-grid{gap:20px}.public-btn:focus-visible{outline:2px solid #69e8c5;outline-offset:3px}.public-btn:disabled{cursor:wait;opacity:.6}
@media(max-width:720px){.public-main.library-page{padding:20px 14px 28px}.library-page .library-intro{margin-bottom:16px}.library-page .library-intro h1{font-size:27px;margin:10px 0 6px}.library-page .library-intro p{font-size:13px;max-width:34ch}.library-page .library-tools{grid-template-columns:1fr;gap:8px;padding:10px;margin-bottom:16px}.library-page .library-tools .public-input{font-size:13px;min-height:44px}.library-page .public-library-only .lesson-grid{grid-template-columns:1fr;gap:16px}.library-page .lesson-card h3{font-size:16px}.library-page .lesson-note{font-size:12px;padding:12px}.library-page .question-controls textarea{font-size:12px}.library-page .question-controls button{min-height:44px;padding:10px 12px}.public-nav .login-link{font-size:11px}}
.lesson-player{position:relative;width:100%;overflow:hidden;border-radius:10px;background:#05080d}.player-stage{position:relative;width:100%;aspect-ratio:16/9;overflow:hidden}.lesson-player .video-frame{display:block;width:100%;height:100%;border-radius:0}.lesson-player .video-inert{pointer-events:none}.player-center{position:absolute;z-index:2;left:50%;top:50%;transform:translate(-50%,-50%);display:grid;place-items:center;width:64px;height:64px;padding:0;border:0;border-radius:50%;background:#1abf9add;color:#05251c;box-shadow:0 8px 28px #0009;font-size:29px;cursor:pointer;transition:opacity .18s ease,transform .18s ease,visibility 0s linear 0s}.player-center:hover,.player-center:focus-visible{transform:translate(-50%,-50%) scale(1.07);outline:2px solid #fff;outline-offset:3px}.lesson-player.has-started.controls-visible.is-playing .player-center{opacity:.16}.lesson-player.has-started.controls-visible.is-playing .player-stage:hover .player-center,.lesson-player.has-started.controls-visible.is-playing .player-center:focus-visible{opacity:1}.player-loading{display:grid;place-items:center;aspect-ratio:16/9;color:#b9c9da;font-size:13px}.lesson-player-controls{display:flex;align-items:center;gap:7px;padding:7px 10px;background:#080d14;color:#fff;transition:opacity .18s ease,visibility 0s linear 0s}.lesson-player-controls .player-icon{display:grid;place-items:center;flex:0 0 32px;width:32px;height:32px;padding:0;border:0;border-radius:7px;background:#ffffff18;color:#fff;cursor:pointer;font-size:17px}.lesson-player-controls .player-icon:hover,.lesson-player-controls .player-icon:focus-visible{background:#ffffff38;outline:none}.lesson-player-controls .player-icon svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.lesson-player-controls .player-icon.is-muted svg{opacity:.45}.lesson-player-controls .player-time{white-space:nowrap;font-size:11px;font-variant-numeric:tabular-nums}.lesson-player-controls input[type=range]{accent-color:#21c99b;cursor:pointer}.lesson-player-controls input[type=range]:disabled{opacity:.45;cursor:default}.lesson-player-controls .player-seek{min-width:35px;flex:1}.lesson-player-controls .player-volume{width:58px;min-width:35px;flex:0 0 58px}.lesson-player-controls .player-speed{min-width:51px;height:32px;padding:0 4px;border:1px solid #314158;border-radius:7px;background:#172131;color:#fff;font-size:11px;cursor:pointer}.player-center:disabled,.lesson-player-controls button:disabled,.lesson-player-controls select:disabled{opacity:.45;cursor:wait}.lesson-player:fullscreen,.lesson-player.player-faux-fullscreen{display:flex;flex-direction:column;border-radius:0;background:#000}.lesson-player:fullscreen .player-stage,.lesson-player.player-faux-fullscreen .player-stage{flex:1;min-height:0;aspect-ratio:auto}.lesson-player.player-faux-fullscreen{position:fixed;inset:0;z-index:2000}.player-lock-scroll{overflow:hidden}
@media(max-width:480px){.player-center{width:52px;height:52px;font-size:24px}.lesson-player-controls{display:grid;grid-template-columns:30px auto minmax(0,1fr) auto 30px;gap:5px;padding:7px}.lesson-player-controls .player-icon{width:30px;height:30px;font-size:15px}.lesson-player-controls [data-video-toggle]{grid-column:1;grid-row:1}.lesson-player-controls .player-time{grid-column:2;grid-row:1;font-size:10px}.lesson-player-controls .player-seek{grid-column:3/6;grid-row:1;width:100%}.lesson-player-controls [data-video-mute]{grid-column:1;grid-row:2}.lesson-player-controls .player-volume{grid-column:2/4;grid-row:2;width:100%;min-width:0}.lesson-player-controls .player-speed{grid-column:4;grid-row:2}.lesson-player-controls [data-video-fullscreen]{grid-column:5;grid-row:2}}
.player-stage{cursor:ew-resize;touch-action:pan-y;user-select:none}
.player-center{width:48px;height:48px;background:#e7283e;color:#fff;font-size:22px}
.player-center svg{display:block;width:24px;height:24px;fill:none;stroke:#fff;stroke-width:2.8;stroke-linecap:round}
.player-center svg.player-play-shape{fill:#fff;stroke:none}
.lesson-player-controls .player-icon svg.player-play-shape{fill:currentColor;stroke:none}
@media(max-width:480px){.player-center{width:42px;height:42px;font-size:19px}}
.lesson-player-controls{min-height:54px;gap:9px;padding:8px 12px;background:#0b111b}
.lesson-player-controls .player-time{font-size:13px;font-weight:600;color:#f7f9fc}
.lesson-player-controls .player-icon{flex-basis:36px;width:36px;height:36px;border-radius:9px;background:#ffffff15}
.lesson-player-controls .player-seek,.lesson-player-controls .player-volume{appearance:none;-webkit-appearance:none;height:6px;border:0;border-radius:99px;background:linear-gradient(90deg,#2bc99f 0 var(--range-fill,0%),#66717b var(--range-fill,0%) 100%);outline:none}
.lesson-player-controls .player-seek::-webkit-slider-thumb,.lesson-player-controls .player-volume::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;width:18px;height:18px;border:0;border-radius:50%;background:#2bc99f;box-shadow:0 1px 7px #0008}
.lesson-player-controls .player-seek::-moz-range-thumb,.lesson-player-controls .player-volume::-moz-range-thumb{width:18px;height:18px;border:0;border-radius:50%;background:#2bc99f;box-shadow:0 1px 7px #0008}
.lesson-player-controls .player-volume{width:68px;flex-basis:68px}
.lesson-player-controls .player-speed{appearance:none;-webkit-appearance:none;min-width:61px;height:36px;padding:0 23px 0 10px;border:1px solid #3a4d63;border-radius:9px;background-color:#182332;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='7' viewBox='0 0 10 7'%3E%3Cpath d='m1 1.5 4 4 4-4' fill='none' stroke='%23dbe7ef' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 8px center;background-size:10px 7px;color:#f7f9fc;font-size:12px;font-weight:600;text-align:left}
.lesson-player-controls .player-icon .mute-slash,.lesson-player-controls .player-icon .fullscreen-exit{display:none}
.lesson-player-controls .player-icon.is-muted .mute-waves,.lesson-player-controls .player-icon.is-fullscreen .fullscreen-enter{display:none}
.lesson-player-controls .player-icon.is-muted .mute-slash,.lesson-player-controls .player-icon.is-fullscreen .fullscreen-exit{display:block}
@media(max-width:480px){.lesson-player-controls{gap:6px;padding:8px;min-height:0}.lesson-player-controls .player-icon{width:30px;height:30px}.lesson-player-controls .player-time{font-size:11px}.lesson-player-controls .player-volume{width:100%;flex-basis:auto}.lesson-player-controls .player-speed{min-width:58px;height:30px;padding-left:8px;padding-right:20px;background-position:right 6px center;font-size:11px}}
.lesson-player:fullscreen .lesson-player-controls,.lesson-player.player-faux-fullscreen .lesson-player-controls{position:relative;z-index:4;flex:none;min-height:76px;padding:16px 24px;border-top:1px solid #263246;background:#070d16}
.lesson-player:fullscreen .player-stage,.lesson-player.player-faux-fullscreen .player-stage{width:100%;height:auto;flex:1}
@media(max-width:480px){.lesson-player:fullscreen .lesson-player-controls,.lesson-player.player-faux-fullscreen .lesson-player-controls{min-height:0;padding:10px 12px}}
.lesson-player:fullscreen,.lesson-player:-webkit-full-screen,.lesson-player.player-faux-fullscreen{display:flex;flex-direction:column;width:100vw;max-width:none;height:100vh;height:100dvh;max-height:100dvh;overflow:hidden;border:0;border-radius:0;background:#000}
.lesson-player.player-faux-fullscreen{position:fixed;inset:0;z-index:9999}.player-lock-scroll{overflow:hidden!important;overscroll-behavior:none}
.lesson-player:fullscreen .player-stage,.lesson-player:-webkit-full-screen .player-stage,.lesson-player.player-faux-fullscreen .player-stage{position:relative;flex:1 1 auto;width:100%;height:auto;min-height:0;aspect-ratio:auto;background:#000}
.lesson-player:fullscreen .video-frame,.lesson-player:-webkit-full-screen .video-frame,.lesson-player.player-faux-fullscreen .video-frame{position:absolute;inset:0;width:100%;height:100%}
.lesson-player:fullscreen .lesson-player-controls,.lesson-player:-webkit-full-screen .lesson-player-controls,.lesson-player.player-faux-fullscreen .lesson-player-controls{flex:0 0 auto;width:100%;padding-bottom:max(16px,env(safe-area-inset-bottom));background:#070d16}
@media(max-width:480px){.lesson-player:fullscreen .lesson-player-controls,.lesson-player:-webkit-full-screen .lesson-player-controls,.lesson-player.player-faux-fullscreen .lesson-player-controls{padding:10px max(12px,env(safe-area-inset-right)) max(12px,env(safe-area-inset-bottom)) max(12px,env(safe-area-inset-left))}}

/* Course lesson details */
.course-lesson-tabs{gap:0}.course-lesson-tabs span{display:inline-flex;align-items:center;gap:8px}.course-lesson-tabs svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linejoin:round}.course-outline-lesson{grid-template-columns:26px minmax(0,1fr)}.course-outline-lesson>span:first-child{width:24px;height:24px;font-size:0}.course-outline-icon svg{width:12px;height:12px;fill:none;stroke:currentColor;stroke-width:1.45;stroke-linecap:round;stroke-linejoin:round}.course-outline-icon svg path[d*="Z"]{fill:currentColor;stroke:none}

/* Curriculum access and ordering */
.curriculum-drag{flex:0 0 34px;width:34px;height:38px;border:1px solid #314158;border-radius:9px;background:#101826;color:#8ea1ba;font-size:20px;cursor:grab;touch-action:none}.curriculum-drag:active{cursor:grabbing}.curriculum-chapter.is-dragging,.curriculum-lesson.is-dragging{opacity:.55;box-shadow:0 0 0 2px #21c99b inset}.curriculum-chapter>header>.curriculum-drag{margin-top:2px}.curriculum-lesson{grid-template-columns:34px 112px 34px minmax(0,1fr) auto}.course-title-actions{display:grid;justify-items:end;gap:10px}.course-title-actions>label{display:grid;gap:6px;width:300px;color:#9cabc0;font-size:12px}.student-access{display:flex;align-items:center;gap:10px;color:#9cabc0;font-size:12px}.course-outline-lesson.locked{color:#8090a6}.course-outline-lesson.locked.active{border-left-color:#ff4d91;background:#341729;color:#ff7baa}.course-outline-lesson.locked.active>span:first-child{background:#f20d63;color:#fff}.course-locked{aspect-ratio:16/9;display:grid;place-content:center;justify-items:center;gap:14px;padding:30px;border:1px solid #2d3a50;border-radius:14px;background:radial-gradient(circle at 55% 48%,#31122f 0,#161624 36%,#121a28 78%);text-align:center}.course-locked>svg{width:52px;height:52px;fill:none;stroke:#ff277c;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}.course-locked>span{color:#ff6ca5;font-size:11px;font-weight:800;letter-spacing:2px}.course-locked h2{margin:0;font-size:28px}.course-locked p{margin:0;color:#8595ac}.course-locked .public-btn{margin-top:6px;background:#f20d63;border-color:#f20d63;color:#fff}.upgrade-success{display:grid;gap:12px;text-align:center}.upgrade-success p{color:#9cabc0;line-height:1.7}.class-scheduled-fields{display:contents}.class-scheduled-fields[hidden]{display:none}
@media(max-width:900px){.course-title-actions{width:100%;justify-items:stretch}.course-title-actions>label{width:100%}.student-access{justify-content:space-between}.course-locked h2{font-size:23px}}
@media(max-width:600px){.curriculum-lesson{grid-template-columns:32px 62px 24px minmax(0,1fr)}.curriculum-lesson>.curriculum-actions{grid-column:1/-1}.course-locked{padding:20px}.course-locked>svg{width:42px;height:42px}.course-locked h2{font-size:20px}}
.player-loading{color:transparent}
.player-spinner{width:28px;height:28px;border:3px solid #ffffff45;border-top-color:#2bc99f;border-radius:50%;animation:player-spin .8s linear infinite}
@keyframes player-spin{to{transform:rotate(360deg)}}
/* The thumbnail stays above one prepared player until an explicit start gesture. */
.lesson-player .video-cover{position:absolute;inset:0;z-index:5;width:100%;height:100%;border-radius:0}
.lesson-player .video-cover:disabled{cursor:progress}
.lesson-player .video-cover:disabled::after{content:"";position:absolute;left:50%;top:50%;width:28px;height:28px;margin:-17px;border:3px solid #ffffff90;border-top-color:#2bc99f;border-radius:50%;animation:player-spin .8s linear infinite}
.lesson-player.has-started .video-cover{display:none}
.lesson-player:not(.has-started) .player-center,.lesson-player:not(.has-started) .lesson-player-controls{display:none}
.lesson-player .lesson-player-controls{position:absolute;z-index:4;left:0;right:0;bottom:0;width:100%;background:#070d16e8;transition:opacity .2s ease}
.lesson-player.has-started:not(.controls-visible) .player-center,.lesson-player.has-started:not(.controls-visible) .lesson-player-controls{opacity:0!important;visibility:hidden;pointer-events:none}
.lesson-player.has-started.controls-visible .player-center,.lesson-player.has-started.controls-visible .lesson-player-controls{visibility:visible;pointer-events:auto}
.lesson-player.has-started.controls-visible:not(.is-playing) .player-center,.lesson-player.has-started.controls-visible .lesson-player-controls{opacity:1}
.lesson-player.device-volume .player-volume{display:none}
.lesson-player:fullscreen .lesson-player-controls,.lesson-player:-webkit-full-screen .lesson-player-controls,.lesson-player.player-faux-fullscreen .lesson-player-controls{position:absolute;left:0;right:0;bottom:0;z-index:4;flex:none;width:100%;min-height:0}
.lesson-player:fullscreen .player-stage,.lesson-player:-webkit-full-screen .player-stage,.lesson-player.player-faux-fullscreen .player-stage{flex:1 1 auto;width:100%;height:100%;min-height:0}

/* Compact curriculum manager, custom menus and cross-chapter sorting */
.curriculum-management-page .public-main{max-width:1380px;padding-top:24px}.curriculum-admin-title{align-items:center;margin-bottom:18px}.curriculum-admin-title h1{font-size:30px!important;margin:8px 0 2px}.curriculum-admin-title p{font-size:13px}.curriculum-admin-list{gap:14px}.curriculum-course{border-radius:14px}.curriculum-course-head{display:grid;grid-template-columns:minmax(190px,.75fr) minmax(260px,1.25fr) auto;align-items:center;gap:18px;padding:14px 16px}.curriculum-course-title,.curriculum-chapter-title{min-width:0}.curriculum-course-title .badge{padding:5px 8px;font-size:9px}.curriculum-course-title h2{margin:7px 0 0;font-size:18px;overflow-wrap:anywhere}.curriculum-description{min-width:0}.curriculum-description>small{display:block;margin-bottom:4px;color:#688098;font-size:9px;font-weight:700;letter-spacing:.7px}.curriculum-description p{margin:0!important;font-size:12px;line-height:1.55;color:#9cabc0}.curriculum-chapter{padding:12px 14px}.curriculum-chapter>header{display:grid;grid-template-columns:32px minmax(160px,.7fr) minmax(240px,1.3fr) auto;align-items:center;gap:12px;margin:0 0 10px}.curriculum-chapter-title small{color:#49d5b3;font-size:9px;text-transform:uppercase}.curriculum-chapter-title h3{margin:2px 0 0;font-size:15px}.curriculum-lessons{min-height:58px}.curriculum-lesson{grid-template-columns:32px 78px 28px minmax(180px,1fr) auto;gap:10px;padding:8px 10px;min-height:62px}.curriculum-lesson img{width:78px;height:44px}.curriculum-lesson-info b{font-size:13px}.curriculum-lesson-info small{font-size:10px}.curriculum-empty{padding:16px;font-size:11px}.curriculum-actions{gap:6px;flex-wrap:nowrap}.curriculum-icon-btn,.curriculum-drag{display:grid;place-items:center;flex:0 0 32px;width:32px;height:32px;padding:0;border:1px solid #314158;border-radius:8px;background:#111b2a;color:#aebed1;cursor:pointer}.curriculum-icon-btn svg,.curriculum-drag svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.65;stroke-linecap:round;stroke-linejoin:round}.curriculum-drag svg circle{fill:currentColor;stroke:none}.curriculum-icon-btn:hover,.curriculum-drag:hover{border-color:#21c99b;color:#5ce2c0;background:#12302c}.curriculum-icon-btn.danger{color:#ff8fa3}.curriculum-icon-btn:disabled{opacity:.25;cursor:not-allowed}.curriculum-add-btn{min-height:32px;padding:5px 10px;border-radius:8px;font-size:11px}.curriculum-drag{cursor:grab;touch-action:none}.curriculum-drag:active{cursor:grabbing}.curriculum-chapter.is-dragging,.curriculum-lesson.is-dragging{opacity:.16}.curriculum-drag-ghost{position:fixed;z-index:10000;left:0;top:0;max-height:92px;overflow:hidden;pointer-events:none;opacity:.92;border:1px solid #32d9ad;border-radius:10px;background:#101a28;box-shadow:0 18px 50px #000b}.curriculum-drop-placeholder{margin:5px;border:1px dashed #35dcb2;border-radius:10px;background:#12352d66}.curriculum-drop-placeholder.lesson{min-height:58px}.curriculum-drop-placeholder.chapter{min-height:82px}.curriculum-lessons.drag-over,.curriculum-chapters.drag-over{box-shadow:0 0 0 2px #21c99b inset;background:#12332c40}.curriculum-lessons.drag-over{min-height:72px}.smart-select{position:relative}.smart-select-trigger,.course-picker-trigger{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;min-height:46px;padding:10px 13px;border:1px solid #304158;border-radius:10px;background:#0d1521;color:#fff;cursor:pointer;text-align:left}.smart-select-trigger svg,.course-picker-trigger svg{flex:0 0 18px;width:18px;height:18px;fill:none;stroke:#a9bad0;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;transition:transform .18s}.smart-select.open .smart-select-trigger svg,.course-picker.open .course-picker-trigger svg{transform:rotate(180deg)}.smart-select-menu,.course-picker-menu{position:absolute;z-index:30;left:0;right:0;top:calc(100% + 7px);max-height:260px;overflow:auto;padding:6px;border:1px solid #354961;border-radius:12px;background:#131d2b;box-shadow:0 18px 45px #000a}.smart-select-menu[hidden],.course-picker-menu[hidden]{display:none}.smart-select-menu button,.course-picker-menu button{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;padding:11px 12px;border:0;border-radius:8px;background:transparent;color:#dce6f2;cursor:pointer;text-align:left}.smart-select-menu button:hover,.smart-select-menu button.selected,.course-picker-menu button:hover,.course-picker-menu button.selected{background:#1d2b3d;color:#5ce2c0}.smart-select-menu i,.course-picker-menu i{color:#35dcb2;font-style:normal}.course-picker{position:relative;width:300px;text-align:left}.course-picker>span{display:block;margin-bottom:6px;color:#9cabc0;font-size:11px}.course-picker-trigger b{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px}.course-locked-actions{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:4px}.course-locked .course-locked-actions .public-btn{margin:0}.course-locked .course-locked-actions #student-login{background:#172131;border-color:#41536b;color:#fff}
@media(max-width:1000px){.curriculum-course-head{grid-template-columns:1fr auto}.curriculum-course-head>.curriculum-description{grid-column:1/-1;grid-row:2}.curriculum-chapter>header{grid-template-columns:32px 1fr auto}.curriculum-chapter>header>.curriculum-description{grid-column:2/-1;grid-row:2}.curriculum-chapter>header>.curriculum-actions{grid-column:3;grid-row:1}.curriculum-lesson{grid-template-columns:32px 68px 26px minmax(0,1fr) auto}.curriculum-lesson img{width:68px;height:40px}}
@media(max-width:600px){.curriculum-course-head{padding:12px;grid-template-columns:1fr}.curriculum-course-head>.curriculum-actions{grid-row:3;justify-content:flex-start}.curriculum-course-head>.curriculum-description{grid-row:2}.curriculum-chapter{padding:10px}.curriculum-chapter>header{grid-template-columns:30px 1fr}.curriculum-chapter>header>.curriculum-actions{grid-column:1/-1;grid-row:3;justify-content:flex-start}.curriculum-chapter>header>.curriculum-description{grid-column:2;grid-row:2}.curriculum-lesson{grid-template-columns:30px 54px 23px minmax(0,1fr);padding:8px 6px}.curriculum-lesson img{width:54px;height:34px}.curriculum-lesson>.curriculum-actions{grid-column:1/-1;justify-content:flex-end;padding-top:6px}.curriculum-actions .public-btn{flex:0 0 auto;min-height:32px}.course-picker{width:100%}.course-locked-actions{width:100%}.course-locked-actions .public-btn{flex:1;min-width:150px}}

/* Training page geometry: aligned columns and restrained corner radii */
.course-reader-title{display:grid;grid-template-columns:minmax(0,1fr) 310px;align-items:end;gap:28px;margin-bottom:24px}.course-title-actions{width:310px;justify-self:end}.course-picker{width:310px}.course-picker-trigger{min-height:44px;border-radius:7px}.course-picker-menu{top:calc(100% + 5px);padding:5px;border-radius:8px}.course-picker-menu button{padding:10px 11px;border-radius:5px}.course-lesson-view>.video-cover,.course-lesson-view>.lesson-player,.course-locked{border-radius:8px}.course-outline{border-radius:8px}.course-outline>header{padding:18px}.course-outline-lesson>span:first-child{border-radius:6px}.course-question{border-radius:8px}.course-note{border-radius:0}.course-play-label b{border-radius:8px}.course-progress{border-radius:3px}.public-panel,.lesson-card,.contact-dialog{border-radius:10px}.public-btn{border-radius:7px}.public-input,.smart-select-trigger{border-radius:7px}.curriculum-course{border-radius:10px}.curriculum-lessons{border-radius:8px}.curriculum-icon-btn,.curriculum-drag,.curriculum-add-btn{border-radius:6px}
@media(max-width:900px){.course-reader-title{grid-template-columns:1fr;gap:16px;margin-bottom:20px}.course-title-actions,.course-picker{width:100%;justify-self:stretch}.course-learning-shell{gap:18px}.course-outline{border-radius:8px}}
@media(max-width:600px){.course-reader{padding-top:24px}.course-reader-title{gap:14px}.course-picker-trigger{min-height:42px}.course-lesson-view>.video-cover,.course-lesson-view>.lesson-player,.course-locked{border-radius:6px}.course-outline,.course-question{border-radius:6px}.course-locked-actions{gap:8px}}

/* Refined course actions and a quieter active lesson */
.course-outline-lesson.active{border-left-color:#2dbb98;background:#17302bcc;color:#8bdcc6}.course-outline-lesson.active:hover{background:#1a3731;color:#a5e8d5}.course-outline-lesson.active>span:first-child{background:#279f83;color:#d9fff4}.course-outline-lesson.active small{color:#82a99f}.course-lesson-heading #mark-complete{min-height:36px;padding:7px 12px;border-radius:6px;font-size:11px;font-weight:650;box-shadow:none}.course-lesson-heading #mark-complete.primary{background:#22ba94;border-color:#22ba94}.course-lesson-heading #mark-complete:not(.primary){background:#14221f;border-color:#2b806c;color:#71d5ba}.course-reader .public-btn{min-height:38px;padding:8px 13px;font-size:12px}.course-play-label b{padding:10px 16px;font-size:12px;box-shadow:0 8px 22px #21c99b26}.course-locked-actions .public-btn{min-height:38px;padding:8px 13px}.contact-form .public-actions{justify-content:flex-end;margin:12px 0 0}.contact-form .public-actions .public-btn{min-height:38px;padding:8px 15px;font-size:12px}.contact-heading>[data-dismiss]{width:38px;min-width:38px;min-height:38px;padding:0;border-radius:6px;font-size:16px}.course-picker>span{font-size:10px;letter-spacing:.15px}.course-picker-trigger{padding:9px 12px}.course-picker-menu button{font-size:12px}
@media(max-width:600px){.course-lesson-heading #mark-complete{width:auto;align-self:flex-start}.course-reader .public-btn{min-height:38px}.course-locked-actions .public-btn{min-width:138px}}

/* Course reader: compact, balanced locked lesson on tablets and phones. */
@media(max-width:900px){
  .course-reader{padding-top:26px;padding-bottom:42px}
  .course-reader-title{gap:10px;margin-bottom:18px}
  .course-reader-title h1{margin:8px 0 3px}
  .course-learning-shell{gap:18px}
  .course-locked{aspect-ratio:auto;min-height:clamp(330px,58vw,440px);gap:11px;padding:28px 22px}
  .course-locked>svg{width:44px;height:44px}
  .course-locked>span{letter-spacing:1.7px}
  .course-locked p{max-width:520px;line-height:1.65}
  .course-locked-actions{margin-top:5px}
}
@media(max-width:600px){
  .course-reader{padding:18px 14px 34px}
  .course-reader-title{margin-bottom:14px}
  .course-reader-title h1{font-size:25px;line-height:1.2;margin:7px 0 3px}
  .course-reader-title p{font-size:12px;line-height:1.55}
  .course-eyebrow{font-size:10px;letter-spacing:1.8px}
  .course-locked{min-height:310px;gap:9px;padding:24px 16px;border-radius:5px}
  .course-locked>svg{width:38px;height:38px}
  .course-locked>span{font-size:10px;letter-spacing:1.5px}
  .course-locked h2{font-size:21px;line-height:1.3}
  .course-locked p{font-size:12px;line-height:1.6}
  .course-locked-actions{display:grid;grid-template-columns:1fr;width:100%;max-width:360px;gap:8px}
  .course-locked-actions .public-btn{width:100%;min-width:0;min-height:42px;padding:9px 12px}
  .course-lesson-heading{padding:16px 0 12px;gap:10px}
  .course-lesson-heading h3{font-size:20px;margin-top:5px}
}

/* Slightly sharper public surfaces for a calmer visual rhythm. */
.public-panel,.lesson-card,.contact-dialog,dialog{border-radius:9px}.public-btn,.public-input,.smart-select-trigger,.course-picker-trigger{border-radius:6px}.curriculum-course,.curriculum-lessons,.course-outline,.course-question{border-radius:7px}.request-card,.curriculum-request-card{border-radius:7px}
.curriculum-requests{padding:18px 20px}.curriculum-requests h2{margin:0 0 2px;font-size:19px}.curriculum-requests>p{margin:0;font-size:12px;line-height:1.55}.curriculum-requests #request-search{margin:12px 0 6px;min-height:40px;padding:9px 12px}.curriculum-request-card{display:grid;grid-template-columns:minmax(140px,.8fr) minmax(190px,1fr) minmax(220px,1.25fr) auto;align-items:center;gap:16px;margin-top:8px;padding:11px 12px;white-space:normal;transition:border-color .16s ease,background .16s ease}.curriculum-request-card.is-editable{cursor:pointer}.curriculum-request-card.is-editable:hover,.curriculum-request-card.is-editable:focus-visible{border-color:#3d806f;background:#14202d;outline:0}.curriculum-request-card small{display:block;margin-bottom:3px;color:#71849b;font-size:9px;font-weight:700;letter-spacing:.45px;text-transform:uppercase}.curriculum-request-card b,.curriculum-request-card span,.curriculum-request-card a{display:block;font-size:11px;line-height:1.5}.curriculum-request-card a{color:#53d9b8}.request-message p{margin:0!important;color:#c3cfdd;font-size:11px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.request-meta{display:grid;justify-items:end;gap:7px;min-width:112px}.request-meta time{color:#8394aa;font-size:9px;white-space:nowrap}.request-actions{display:flex;gap:6px}.request-edit-btn,.request-delete-btn{min-height:30px!important;padding:4px 10px!important;border-radius:7px;font-size:10px}@media(max-width:900px){.curriculum-request-card{grid-template-columns:1fr 1fr}.request-meta{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between}}@media(max-width:560px){.curriculum-requests{padding:14px}.curriculum-request-card{grid-template-columns:1fr;gap:10px}.request-meta{grid-column:auto}.request-edit-btn,.request-delete-btn{width:auto!important;flex:0 0 auto!important;min-height:32px!important}}