/* Material 3 authoring tokens. Learner styles remain independently selectable. */
:root,:root[data-theme="light"] {
 --e-bg:oklch(.975 .006 220);--e-panel:oklch(1 0 0);--e-sunk:oklch(.96 .01 220);--e-ink:oklch(.25 .025 230);--e-muted:oklch(.5 .025 230);--e-faint:oklch(.56 .022 230);
 --e-accent:oklch(.47 .115 225);--e-accent-hover:oklch(.4 .115 225);--e-accent-ink:oklch(1 0 0);--e-accent-soft:oklch(.91 .05 225);--e-accent-text:oklch(.36 .09 225);--e-hl:oklch(.8 .13 155);
 --e-line:oklch(.9 .015 220);--e-line2:oklch(.8 .02 220);--e-fill:oklch(.94 .012 220);--e-fill2:oklch(.91 .018 220);--e-ok:oklch(.45 .1 155);--e-ok-soft:oklch(.94 .035 155);--e-danger:oklch(.5 .18 25);--e-danger-soft:oklch(.96 .02 25);--e-warn:oklch(.48 .09 80);--e-warn-soft:oklch(.96 .045 85);
 --studio-tertiary:oklch(.96 .025 155);--studio-shadow-color:oklch(.25 .03 225 / .08);--studio-scrim:oklch(.2 .02 225 / .4);--e-shadow-xs:none;--e-shadow-sm:0 1px 3px var(--studio-shadow-color);--e-shadow:0 5px 18px var(--studio-shadow-color);--e-shadow-lg:0 20px 70px var(--studio-shadow-color);--e-ring:0 0 0 3px var(--e-accent-soft);
 --e-font:'Google Sans','Roboto',Arial,sans-serif;--e-top:76px;--e-rail:88px;--e-pw:252px; color-scheme:light;
}
:root[data-theme="dark"] {--e-bg:oklch(.18 .018 220);--e-panel:oklch(.22 .02 220);--e-sunk:oklch(.25 .023 220);--e-ink:oklch(.93 .008 220);--e-muted:oklch(.74 .02 220);--e-faint:oklch(.67 .02 220);--e-line:oklch(.32 .025 220);--e-line2:oklch(.45 .025 220);--e-fill:oklch(.28 .025 220);--e-fill2:oklch(.32 .025 220);--e-accent:oklch(.78 .09 225);--e-accent-hover:oklch(.85 .08 225);--e-accent-ink:oklch(.22 .05 225);--e-accent-soft:oklch(.34 .065 225);--e-accent-text:oklch(.85 .06 225);--studio-tertiary:oklch(.26 .04 155);--studio-shadow-color:oklch(.08 .015 225 / .35);--e-ok-soft:oklch(.28 .035 155);--e-ok:oklch(.8 .1 155);color-scheme:dark}
*{letter-spacing:0!important}body{font-size:14px}.studio-loading{padding:80px;text-align:center;color:var(--e-muted)}
button{transition:background .18s var(--e-ease),box-shadow .18s var(--e-ease),transform .18s var(--e-ease)}
.e-top{height:var(--e-top);background:var(--e-bg);border:0;padding:0 30px;gap:12px}.e-name b{font-size:22px;font-weight:500}.e-name span{font-size:12px;margin-top:4px}.e-mark{width:36px;height:36px;border-radius:12px;background:var(--e-accent-soft);box-shadow:none}.e-mark i{border-color:var(--e-accent);width:17px;height:17px}.e-btn{height:40px;border-radius:24px;font-size:13px;font-weight:500;padding:0 20px;box-shadow:none;gap:8px}.e-btn.primary{box-shadow:none}.e-btn:hover:not([disabled]){border-color:var(--e-line2)}.e-ico{width:18px;height:18px}.e-icbtn{width:36px;height:36px;border-radius:50%}.e-icbtn .e-ico{width:18px;height:18px}.e-btn.sm{height:34px;border-radius:20px;padding:0 14px}.e-status{font-weight:400;background:transparent!important;font-size:12px}.e-sep{background:var(--e-line);margin:0 5px}
.l-app{padding-left:88px;min-height:100vh}.studio-rail{position:fixed;left:0;top:0;bottom:0;width:88px;background:var(--e-sunk);display:flex;flex-direction:column;align-items:center;padding:24px 8px 20px;z-index:30;gap:12px}.studio-logo{color:var(--e-accent);margin:0 0 14px}.studio-logo svg{width:32px;height:32px}.studio-fab{width:54px;height:54px;background:var(--e-accent-soft);border:0;border-radius:16px;color:var(--e-accent-text);box-shadow:var(--e-shadow);margin-bottom:13px;cursor:pointer}.studio-fab svg{width:25px;height:25px;fill:none;stroke:currentColor;stroke-width:1.7}.studio-nav{position:relative;border:0;background:none;color:var(--e-muted);display:flex;align-items:center;flex-direction:column;gap:6px;font-size:12px;width:72px;min-height:64px;padding:10px 4px;cursor:pointer}.studio-nav svg{width:23px;height:23px;fill:none;stroke:currentColor;stroke-width:1.7;z-index:1}.studio-nav span{z-index:1}.studio-nav.active{color:var(--e-accent-text);font-weight:600}.studio-nav.active:before,.studio-nav:hover:before{content:'';position:absolute;width:58px;height:34px;top:4px;left:7px;background:var(--e-accent-soft);border-radius:25px}.studio-rail-bottom{margin-top:auto;display:flex;align-items:center;flex-direction:column;gap:14px}.studio-avatar{border-radius:50%;width:32px;height:32px;background:var(--e-accent-soft);color:var(--e-accent-text);display:grid;place-items:center;font-weight:600}
.l-main{max-width:1320px;padding:36px 44px 24px}.studio-breadcrumb{font-size:12px;color:var(--e-faint);font-weight:500;margin-bottom:23px}.studio-breadcrumb span{margin:0 12px;color:var(--e-line2)}.studio-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:38px;gap:20px}.l-main h1{font-size:36px;font-weight:500;margin:0 0 10px}.studio-heading p{font-size:14px;color:var(--e-muted);margin:0}.studio-storage{display:flex;gap:7px;align-items:center;font-size:12px;color:var(--e-muted);white-space:nowrap}.studio-storage>span{width:6px;height:6px;border-radius:50%;background:var(--e-ok)}.studio-section-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;gap:16px}.studio-section-head h2{font-weight:500;font-size:19px;margin:0}.studio-section-head>span{font-size:12px;color:var(--e-faint)}.studio-feature-grid{display:grid;grid-template-columns:1.8fr 1fr;gap:20px}.studio-template{display:grid;grid-template-columns:43% 57%;background:var(--e-accent-soft);overflow:hidden;border-radius:8px;min-height:240px}.studio-template>img{width:100%;height:100%;object-fit:cover;object-position:50% 50%}.studio-template-content{padding:26px 24px;align-self:center}.studio-chip{font-size:12px;font-weight:600;color:var(--e-accent-text);display:inline-block}.studio-template h3{font-size:25px;font-weight:500;line-height:1.2;margin:13px 0}.studio-template p{font-size:12px;margin:0 0 23px;color:var(--e-muted)}.studio-template .e-btn{height:36px;font-size:12px}.studio-blank{background:var(--studio-tertiary);border-radius:8px;padding:24px 28px;position:relative}.studio-blank-icon{color:var(--e-ok);position:absolute;right:26px;top:24px;border:1px solid var(--e-ok);border-radius:12px;padding:10px;display:grid;place-items:center}.studio-blank-icon .e-ico{width:25px;height:25px}.studio-blank .studio-chip{margin:14px 0 12px;color:var(--e-ok)}.studio-blank h3{font-size:24px;font-weight:500;margin:8px 0}.studio-blank p{font-size:13px;color:var(--e-muted);line-height:1.6;margin:8px 0 22px}.studio-blank .e-btn{background:transparent;border-color:var(--e-ok);color:var(--e-ok);height:36px;font-size:12px}
.studio-saved{margin-top:43px}.studio-count{display:inline-grid;place-items:center;width:23px;height:23px;border-radius:50%;background:var(--e-fill2);font-size:12px;margin-left:7px}.studio-library-tools{display:flex;gap:12px;align-items:center}.studio-search{display:flex;align-items:center;gap:10px;border:1px solid var(--e-line);border-radius:25px;background:var(--e-panel);padding:0 15px;height:38px;color:var(--e-faint)}#libSearch{border:0;border-radius:0;width:200px;height:32px;outline:none!important;box-shadow:none!important;background:transparent;font-size:12px;color:var(--e-ink)}.studio-filter{display:flex;align-items:center;gap:8px;margin:20px 0}.studio-filter .e-btn{border:1px solid transparent;font-size:12px}.studio-filter .studio-filter-active{background:var(--e-accent-soft);color:var(--e-accent-text);border-color:var(--e-line)}.studio-filter>span{margin-left:auto;color:var(--e-faint);font-size:12px}.l-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.l-card{border-radius:8px;border:1px solid var(--e-line);box-shadow:none}.l-card:hover{box-shadow:var(--e-shadow);transform:translateY(-2px)}.studio-course-cover{height:145px;position:relative;overflow:hidden;background:var(--e-accent-soft)}.studio-course-cover img{width:100%;height:100%;object-fit:cover}.studio-course-cover .studio-chip{position:absolute;top:12px;left:12px;background:var(--e-panel);padding:5px 8px;border-radius:4px}.l-cb{padding:20px}.l-cb h3{font-weight:500;font-size:19px;margin:10px 0 12px}.l-eye{font-size:12px}.studio-updated{font-size:12px;color:var(--e-faint);margin:14px 0 0}.l-acts{display:flex;padding:12px 16px;align-items:center;gap:4px}.l-acts .e-btn{width:auto;margin-right:auto;font-size:12px}.l-acts .e-icbtn{width:29px;height:29px}.l-acts .e-ico{width:15px;height:15px}.studio-list{grid-template-columns:1fr}.studio-list .l-card{flex-direction:row;align-items:center}.studio-list .studio-course-cover{width:180px;flex-shrink:0}.studio-list .l-cb{flex:1}.studio-list .l-acts{border:0}.studio-empty-saved{border-top:1px solid var(--e-line);border-bottom:1px solid var(--e-line);padding:28px 0;display:flex;align-items:center;gap:15px}.studio-empty-saved>div{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;background:var(--e-sunk);color:var(--e-muted)}.studio-empty-saved h3{font-size:14px;font-weight:500;margin:0}.studio-empty-saved p{font-size:12px;color:var(--e-muted);margin:0}.studio-empty-saved .e-btn{margin-left:auto;font-size:12px;color:var(--e-accent)}.studio-no-results{padding:30px;text-align:center;color:var(--e-muted)}.studio-footer{margin-top:42px;border-top:1px solid var(--e-line);padding-top:20px;display:flex;justify-content:space-between;font-size:12px;color:var(--e-faint)}.studio-footer-dot{margin:0 8px}
/* The editor uses the same Material surface and control vocabulary. */
.e-app .e-top{padding:0 20px}.e-app .e-name b{font-size:17px}.e-app .e-name span{display:block;font-size:12px}.e-body{grid-template-columns:88px auto minmax(0,1fr) 290px;height:calc(100dvh - var(--e-top))}.e-rail{background:var(--e-sunk);padding:20px 8px;gap:14px;border:0}.e-rail button{height:64px;border-radius:18px;font-weight:500;font-size:12px;gap:8px}.e-rail button[aria-pressed="true"]{background:var(--e-accent-soft)}.e-panel{width:252px;border:0;border-radius:12px 0 0 0}.e-phead{height:58px;padding:0 18px;border-bottom:1px solid var(--e-line)}.e-phead b{font-size:14px;font-weight:500}.e-scroll{padding:18px 14px 28px}.e-outline .grp{font-size:12px;color:var(--e-faint);margin:22px 10px 10px}.e-les .pick{padding:12px 10px}.e-les .pick .tt{font-size:12px;white-space:normal;line-height:1.4}.e-les .pick .no{background:transparent;flex-basis:21px;font-size:12px}.e-les.cur .pick{background:var(--e-accent-soft);border-radius:22px}.e-les.cur .pick .no{background:transparent;color:var(--e-accent-text)}.e-les.cur .pick .tt{font-weight:500}.e-les .acts{box-shadow:var(--e-shadow-sm);right:3px}#eAddLesson{border-style:solid;border-radius:24px;height:40px}.e-center{background:var(--e-sunk);border-radius:12px 0 0 0}.e-canvasbar{height:58px;background:var(--e-panel);padding:0 16px;gap:8px}.e-canvasbar .ttl{font-size:12px;font-weight:500}.e-lessonpick{height:36px}.e-lessonpick .no{background:var(--e-accent-soft);color:var(--e-accent-text)}.e-seg{background:transparent;border:1px solid var(--e-line2);border-radius:25px;padding:0;overflow:hidden;gap:0}.e-seg button{height:32px;border-radius:0;padding:0 12px;border-right:1px solid var(--e-line2);font-size:12px}.e-seg button:last-child{border-right:0}.e-seg button[aria-pressed="true"]{background:var(--e-accent-soft);color:var(--e-accent-text);box-shadow:none}.e-seg .lbl{display:none}.e-canvas{padding:28px 24px 70px}.e-page{max-width:880px}#stage{border-radius:8px;box-shadow:var(--e-shadow);outline:1px solid var(--e-line)}.studio-inspector{grid-column:4;min-width:0;display:flex;flex-direction:column;background:var(--e-panel);border-left:1px solid var(--e-line);overflow:hidden}.studio-inspector-dot{margin-left:auto;width:6px;height:6px;border-radius:50%;background:var(--e-accent)}.e-field{margin-bottom:20px}.e-field>label,.e-lbl{font-size:12px;font-weight:500;color:var(--e-muted)}.e-in,.e-sel,.e-ta{border-radius:5px;background:var(--e-sunk);border:0;border-bottom:1px solid var(--e-line2);height:42px;font-size:12px}.e-ta{height:auto;padding:12px;min-height:90px}.e-richbar{background:var(--e-sunk);border-color:var(--e-line);padding:5px;border-radius:5px 5px 0 0}.e-rich{border-color:var(--e-line);border-radius:0 0 5px 5px;font-size:12px;padding:12px}.e-help{font-size:12px;line-height:1.5}.e-h{font-size:12px;font-weight:500;margin:22px 0 10px}.e-typechip{height:27px;font-size:12px;font-weight:500}.e-note{background:var(--e-sunk);border:0;font-size:12px;border-radius:6px;padding:12px}.e-item{border-radius:6px;box-shadow:none}.e-presets{gap:8px}.e-preset{border-radius:8px;padding:12px;box-shadow:none}.e-swatches{gap:8px}.e-sw{border:0;background:var(--e-sunk);padding:9px;border-radius:6px}.e-check{font-size:12px;align-items:center}.e-check input{width:18px;height:18px;margin:0}.e-scrim{background:var(--studio-scrim)}.e-dialog{border-radius:24px;padding:30px;background:var(--e-panel);box-shadow:var(--e-shadow-lg);width:min(580px,100%)}.e-dialog h2{font-size:25px;font-weight:500;margin-bottom:12px}.e-dialog p{font-size:12px}.e-dialog .e-radio{border-radius:8px;border:1px solid var(--e-line);padding:14px;box-shadow:none}.e-radio b{font-size:13px;font-weight:500}.e-radio small{font-size:12px}.e-radio:has(input:checked){border-color:var(--e-accent);background:var(--e-accent-soft);box-shadow:none}.e-pop{border-radius:16px;padding:16px}.e-lib button{border-radius:8px;padding:12px}.e-lib b{font-weight:500}.e-lib .gi{width:38px;height:38px;border-radius:12px}.e-toast{background:var(--e-ink);color:var(--e-panel);border-radius:6px;padding:16px 22px;box-shadow:var(--e-shadow-lg);font-weight:400}.e-preview .bar{background:var(--e-panel);color:var(--e-ink);height:64px;border-bottom:1px solid var(--e-line)}.e-preview .bar .e-btn{color:var(--e-ink);border-color:var(--e-line2)}.studio-export-icon{width:44px;height:44px;background:var(--e-accent-soft);color:var(--e-accent-text);border-radius:14px;display:grid;place-items:center;margin-bottom:20px}.studio-export-icon .e-ico{width:23px;height:23px}
@media(min-width:1180px){.e-top #eAI .lbl,.e-top #ePreview .lbl,.e-top #eExport .lbl{display:inline}.e-top #eAI,.e-top #ePreview,.e-top #eExport{width:auto;padding:0 15px}.e-name{flex:1}.e-app .e-top .e-mark{display:none}#eHome{width:36px;padding:0}#eHome .lbl{display:none}}
@media(max-width:1179px){.e-body{grid-template-columns:88px auto minmax(0,1fr)}.studio-inspector{display:none!important}.e-panel{width:280px}.studio-template h3{font-size:23px}.studio-template-content{padding:24px 20px}.e-name span{display:none!important}.e-top{padding:0 22px}.l-main{padding:30px}.l-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:1024px){:root{--e-top:64px;--e-rail:68px}.e-body{display:flex;height:auto}.e-rail{padding:0 6px;height:68px;gap:0;border-top:1px solid var(--e-line)}.e-rail button{height:68px;border-radius:0}.e-rail button[aria-pressed="true"]{background:var(--e-accent-soft)}.e-panel{width:auto;border-radius:24px 24px 0 0}.e-phead{height:58px;padding:20px 18px 12px}.e-center{border-radius:0}.e-canvas{padding:22px 15px 60px}.e-app .e-top{padding:0 10px;gap:5px}.e-app .e-name b{font-size:14px}.e-canvasbar{height:52px}.e-rail button[aria-pressed="true"]:before{display:none}.l-main{padding:28px}.studio-feature-grid{grid-template-columns:1.5fr 1fr}.studio-template{grid-template-columns:1fr}.studio-template>img{height:150px}.studio-template h3{font-size:23px}.studio-blank{display:flex;flex-direction:column;justify-content:center;padding:30px 24px}.studio-blank-icon{position:static;align-self:flex-start;margin-bottom:18px}.studio-blank .e-btn{align-self:flex-start}.studio-heading h1{font-size:32px}}
@media(max-width:700px){.l-app{padding-left:0;padding-bottom:74px}.studio-rail{top:auto;bottom:0;right:0;width:100%;height:68px;flex-direction:row;padding:0 8px;justify-content:space-around;border-top:1px solid var(--e-line);gap:0}.studio-logo,.studio-fab,.studio-avatar{display:none}.studio-rail-bottom{margin:0}.studio-nav{min-height:60px;width:66px;font-size:12px}.studio-nav.active:before,.studio-nav:hover:before{left:4px}.l-app .e-top{padding:0 18px;height:70px;gap:5px}.l-app .e-mark{display:none}.l-app .e-name b{font-size:20px}.l-app .e-name span{display:none}.l-app .e-top #libRise,.l-app .e-top #libAI{display:none}.l-app .e-top #libImport{width:35px;padding:0}.l-app .e-top #libImport .lbl{display:none}.l-app .e-top #libNew{padding:0 14px;height:36px;font-size:12px}.l-main{padding:20px}.studio-breadcrumb{font-size:12px;margin-bottom:20px}.studio-heading{margin-bottom:30px}.studio-heading h1{font-size:30px}.studio-heading p{font-size:12px}.studio-storage{display:none}.studio-section-head h2{font-size:17px}.studio-section-head>span{display:none}.studio-feature-grid{grid-template-columns:1fr;gap:14px}.studio-template{grid-template-columns:35% 65%;min-height:235px}.studio-template>img{height:100%}.studio-template-content{padding:20px 16px}.studio-template h3{font-size:22px}.studio-template p{font-size:12px}.studio-template .e-btn{font-size:12px;padding:0 12px}.studio-template .e-btn .e-ico{width:14px}.studio-blank{min-height:170px;padding:20px;display:block}.studio-blank-icon{position:absolute;right:20px;top:22px;margin:0}.studio-blank h3{font-size:22px}.studio-blank p br{display:none}.studio-blank p{font-size:12px;margin-bottom:16px;max-width:85%}.studio-blank .studio-chip{margin-top:0}.studio-saved{margin-top:32px}.studio-search{width:150px;padding:0 10px}#libSearch{width:100%;min-width:0;font-size:12px}.studio-library-tools{gap:4px}.studio-library-tools .e-icbtn{display:none}.studio-filter>span{display:none}.studio-empty-saved{display:grid;grid-template-columns:42px 1fr;gap:6px 12px;padding:22px 0}.studio-empty-saved>div{grid-row:span 2}.studio-empty-saved p{grid-column:2}.studio-empty-saved .e-btn{grid-column:2;margin:0;justify-content:flex-start;padding:0;height:32px}.l-grid{grid-template-columns:1fr}.studio-list .l-card{flex-direction:column;align-items:stretch}.studio-list .studio-course-cover{width:100%}.studio-list .l-acts{border-top:1px solid var(--e-line)}.studio-footer{gap:14px;line-height:1.7;margin-top:30px}.studio-footer>span:last-child{text-align:right;max-width:220px}.e-status{display:none}.e-app .e-top .e-name b{max-width:110px;font-size:12px}.e-group{gap:0}.e-group .e-icbtn{width:25px}.e-top #eAI,.e-top #ePreview,.e-top #eExport,#eSave{width:30px;height:34px;padding:0}.e-top .e-btn .lbl{display:none}.e-app .e-top #eHome{width:25px}.e-sep{display:none}.e-dialog{padding:24px 20px;border-radius:20px}.e-dialog h2{font-size:23px}.e-dialog .foot .e-btn{font-size:12px;padding:0 14px}.e-lib{grid-template-columns:1fr}}
/* Keep course navigation distinct from the selected-block inspector. */
@media(min-width:1025px){.e-rail{grid-column:1}.e-panel{grid-column:2}.e-center{grid-column:3}}
.e-rail button span{max-width:100%;white-space:normal;overflow-wrap:anywhere}
#eInspectorTitle{min-width:0;line-height:1.3}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}/* quality check */
.e-dialog.e-audit{width:min(720px,94vw)}
.e-aud-sum{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:12px 0}
.e-aud-chip{border-radius:16px;padding:10px 12px;background:var(--studio-error-container,#fde7e7);display:flex;flex-direction:column;font-size:12px}
.e-aud-chip b{font-size:22px}.e-aud-chip.ok{background:var(--studio-surface-container,#eef3f6)}
.e-aud-body{max-height:50vh;overflow:auto}
.e-aud-list{list-style:none;margin:0;padding:0}
.e-aud-list li{display:grid;grid-template-columns:62px 1fr auto;gap:10px;align-items:center;padding:10px 4px;border-bottom:1px solid var(--e-line)}
.e-aud-sev{font-size:12px;font-weight:700;text-align:center;border-radius:99px;padding:3px 0;background:var(--e-sunk)}
.sev-x .e-aud-sev{background:var(--studio-error,#b3261e);color:var(--studio-on-error,#fff)}
.e-aud-msg small{display:block;color:var(--e-muted);font-weight:600}
.e-aud-ok{padding:18px;text-align:center}
.e-flash{box-shadow:0 0 0 3px var(--studio-primary,#0070a0)!important;transition:box-shadow .3s}
@media (max-width:640px){.e-aud-sum{grid-template-columns:repeat(2,1fr)}}
/* statement inspector */
.e-tracklog .hd .row{display:flex;align-items:center;gap:8px}.e-tracklog .hd .row b{margin-right:auto}
.e-tracklog .cnt{min-width:24px;text-align:center;border-radius:99px;padding:1px 8px;font-size:12px;font-weight:700;background:var(--e-accent);color:#fff}
.e-tracklog .flt{display:flex;gap:6px;margin-top:6px;flex-wrap:wrap}
.e-tracklog .flt button{border:1px solid var(--e-line);background:none;border-radius:8px;padding:3px 10px;font-size:12px;cursor:pointer;color:var(--e-ink)}
.e-tracklog .flt button[aria-pressed="true"]{background:var(--studio-secondary-container,#d6e7f0);border-color:transparent;font-weight:600}
.e-tracklog li.event .k{background:var(--studio-tertiary,#7a5a00)}
.e-tracklog li .ts{display:block;color:var(--e-muted);font-size:12px}
.e-tracklog li.fresh{background:var(--studio-primary-container,rgba(0,112,150,.1))}
.e-tracklog li{transition:background .8s}
/* dashboard covers, stats, tags */
.studio-course-cover{position:relative;background:linear-gradient(135deg,var(--c1,#253746),var(--c2,#00A3E0))}
.studio-cover-art{position:absolute;inset:0;display:grid;place-items:center;background:radial-gradient(circle at 78% 22%,var(--c3,#EADA24) 0 14%,transparent 15%),linear-gradient(135deg,var(--c1,#253746),var(--c2,#00A3E0))}
.studio-cover-art b{font-size:54px;font-weight:600;color:oklch(1 0 0 / .92)}
.studio-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin:10px 0 8px}
.studio-stats div{background:var(--e-sunk);border-radius:12px;padding:6px 8px}.studio-stats dt{font-size:12px;color:var(--e-muted)}.studio-stats dd{margin:0;font-weight:600;font-size:14px}
.studio-ready{display:inline-flex;align-items:center;gap:4px;font-size:12px;font-weight:600;border-radius:99px;padding:2px 10px}
.studio-ready.ok{background:var(--e-ok-soft);color:var(--e-ok)}.studio-ready.warn{background:oklch(.95 .05 70);color:oklch(.45 .12 60)}.studio-ready.unk{background:var(--e-fill);color:var(--e-muted)}
.studio-tags{display:flex;flex-wrap:wrap;gap:4px;margin-top:8px}.studio-tags span{font-size:12px;border:1px solid var(--e-line2);border-radius:8px;padding:1px 8px;color:var(--e-muted)}
.studio-tags.pick{margin:-4px 0 12px}
.studio-filter{flex-wrap:wrap;gap:6px}
/* new course wizard */
.e-dialog.e-wizard{width:min(720px,95vw)}
.nw-steps{display:flex;gap:6px;list-style:none;margin:6px 0 18px;padding:0}
.nw-steps li{flex:1;display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--e-muted);padding:8px 10px;border-radius:12px;background:var(--e-sunk)}
.nw-steps li span{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;background:var(--e-fill2);font-weight:600;font-size:12px}
.nw-steps li[aria-current]{background:var(--e-accent-soft);color:var(--e-accent-text);font-weight:600}.nw-steps li[aria-current] span,.nw-steps li.done span{background:var(--e-accent);color:var(--e-accent-ink)}
.nw-cards,.nw-themes{border:0;padding:0;margin:0 0 12px;display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:10px}
.nw-card,.nw-theme{position:relative;display:flex;flex-direction:column;gap:4px;padding:14px;border:1px solid var(--e-line2);border-radius:16px;cursor:pointer;background:var(--e-panel)}
.nw-card input,.nw-theme input{position:absolute;opacity:0;inset:0;cursor:pointer}
.nw-card:has(input:checked),.nw-theme:has(input:checked){border-color:var(--e-accent);box-shadow:0 0 0 2px var(--e-accent);background:var(--e-accent-soft)}
.nw-card:has(input:focus-visible),.nw-theme:has(input:focus-visible){outline:3px solid var(--e-accent);outline-offset:2px}
.nw-card .gi{width:36px;height:36px;border-radius:12px;display:grid;place-items:center;background:var(--e-fill)}.nw-card small{color:var(--e-muted);line-height:1.4}
.nw-theme .sw{display:flex;height:28px;border-radius:8px;overflow:hidden}.nw-theme .sw i{flex:1}
/* media drawer */
.e-media{position:fixed;top:var(--e-top);right:0;bottom:0;width:min(380px,100vw);z-index:60;background:var(--e-panel);box-shadow:var(--e-shadow-lg,0 8px 32px oklch(.2 .02 225 / .25));padding:16px;overflow:auto;display:flex;flex-direction:column;gap:10px;border-radius:24px 0 0 24px}
.e-media .hd{display:flex;align-items:center;justify-content:space-between}.e-media .hd b{font-size:18px;font-weight:500}
.e-media .tabs{display:flex;gap:6px;flex-wrap:wrap}.e-media .tabs button{border:1px solid var(--e-line2);background:none;border-radius:8px;padding:4px 10px;font:inherit;font-size:12.5px;cursor:pointer;color:var(--e-ink)}
.e-media .tabs button[aria-pressed="true"]{background:var(--e-accent-soft);border-color:transparent;color:var(--e-accent-text);font-weight:600}
.e-media .grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.e-media .it{position:relative;display:flex;flex-direction:column;gap:2px}
.e-media .pick{padding:0;border:0;border-radius:12px;overflow:hidden;cursor:pointer;background:var(--e-sunk);aspect-ratio:4/3}
.e-media .pick img{width:100%;height:100%;object-fit:cover;display:block}.e-media .pick:hover{box-shadow:0 0 0 3px var(--e-accent)}.e-media .pick:focus-visible{outline:3px solid var(--e-accent);outline-offset:2px}
.e-media .nm{font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.e-media .tg{font-size:12px;color:var(--e-muted)}
.e-media .rm{position:absolute;top:6px;right:6px;width:28px;height:28px;border-radius:50%;border:0;background:var(--e-panel);display:grid;place-items:center;cursor:pointer}
.e-media .rm svg{width:14px;height:14px}
@media(min-width:1180px){.e-top #eMedia .lbl,.e-top #eAudit .lbl{display:inline}.e-top #eMedia,.e-top #eAudit{width:auto;padding:0 15px}}
.e-media .pick img{pointer-events:none}
/* Theme controls use authoring tokens; sample variables reflect learner data. */
.th-tabs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:2px;padding:3px;background:var(--e-sunk);border:1px solid var(--e-line);border-radius:8px;margin-bottom:18px}
.th-tabs .e-btn{height:42px;white-space:normal;line-height:1.25;font-size:12px;padding:5px;border:0;border-radius:6px;background:transparent;color:var(--e-muted)}
.th-tabs [aria-selected=true]{background:var(--e-accent-soft);color:var(--e-accent-text)}
#th-content{min-width:0}.th-palettes,.th-font-pairs{display:grid;gap:10px}.th-palettes{grid-template-columns:repeat(2,minmax(0,1fr))}
.th-palette.e-btn{display:flex;flex-direction:column;align-items:stretch;height:auto;min-height:108px;padding:8px;gap:6px;border:1px solid var(--e-line);border-radius:8px;background:var(--e-panel);text-align:left;white-space:normal}
.th-palette[aria-pressed=true],.th-font-pair[aria-pressed=true],.th-shapes [aria-pressed=true],.th-layouts [aria-pressed=true]{border-color:var(--e-accent);background:var(--e-accent-soft)}
.th-palette-colors{display:flex;height:28px;overflow:hidden;border:1px solid var(--e-line2);border-radius:4px;flex-shrink:0}.th-palette-colors i{flex:1;background:var(--swatch)}
.th-palette-name{font-size:12px;line-height:1.35;font-weight:600;overflow-wrap:anywhere}.th-palette small{font-size:8px;line-height:1.4;color:var(--e-muted)}
.th-colors{display:grid;gap:8px}.th-color{display:flex;align-items:center;gap:10px;background:var(--e-sunk);border:1px solid var(--e-line);border-radius:8px;padding:10px}
.th-color input[type=color]{width:38px;height:38px;padding:2px;border:1px solid var(--e-line2);border-radius:8px;background:var(--e-panel);cursor:pointer;flex-shrink:0}
.th-color label{min-width:0;flex:1;font-size:12px;color:var(--e-muted)}.th-color .e-in{display:block;width:100%;height:24px;padding:0;background:transparent;border:0;font-family:ui-monospace,monospace;font-size:12px;color:var(--e-ink)}
.th-color .e-in[aria-invalid=true]{color:var(--e-danger);outline:1px solid var(--e-danger)}
.th-audit-summary{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-bottom:12px}.th-audit-summary>span{font-size:12px;color:var(--e-muted)}
.th-badge{font-size:12px;border-radius:4px;padding:3px 6px;white-space:nowrap}.th-badge.pass{background:var(--e-ok-soft);color:var(--e-ok)}.th-badge.fail{background:var(--e-danger-soft);color:var(--e-danger)}
.th-contrast>div{display:grid;grid-template-columns:28px minmax(0,1fr) auto;align-items:center;gap:7px;padding:9px 0;border-bottom:1px solid var(--e-line);font-size:12px;line-height:1.4}.th-contrast small{display:block;font-size:12px;color:var(--e-muted)}
.th-aa-sample{background:var(--sample-bg);color:var(--sample-ink);width:28px;height:30px;border:1px solid var(--e-line2);border-radius:4px;display:grid;place-items:center;font-weight:700}
.th-font-pair.e-btn{display:flex;flex-direction:column;align-items:flex-start;gap:6px;height:auto;padding:14px 12px;border:1px solid var(--e-line);border-radius:8px;white-space:normal;text-align:left;background:var(--e-panel)}
.th-font-pair.e-btn[aria-pressed=true]{background:var(--e-accent-soft)}.th-font-label{font:500 12px var(--e-font);color:var(--e-accent-text)}
.th-font-pair strong,.th-type-preview strong{font-family:var(--preview-heading);font-size:19px;line-height:1.3;font-weight:700}.th-font-body,.th-type-preview p{font-family:var(--preview-body);font-size:12px;line-height:1.5}.th-font-pair small{font:12px/1.4 var(--e-font);color:var(--e-muted)}
.th-type-preview{border-top:1px solid var(--e-line);border-bottom:1px solid var(--e-line);padding:14px 0;margin-bottom:20px}.th-type-preview p{margin:8px 0 0}.th-font-add{display:grid;grid-template-columns:minmax(0,1fr) 64px;gap:6px}.th-font-add button{grid-column:2}.th-font-add input{min-width:0}
.th-shapes,.th-layouts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:5px;margin-bottom:20px}.th-shapes .e-btn,.th-layouts .e-btn{height:auto;min-height:72px;border:1px solid var(--e-line2);border-radius:8px;padding:10px 3px;display:flex;flex-direction:column;gap:8px;white-space:normal;line-height:1.35;font-size:12px}
.th-shapes i{width:28px;height:22px;border:2px solid var(--e-accent);background:var(--e-accent-soft)}.th-shape-0{border-radius:0}.th-shape-12{border-radius:6px}.th-shape-20{border-radius:20px}.th-layouts small{font-size:12px;color:var(--e-muted)}
#th-content input[type=range]{width:100%;accent-color:var(--e-accent)}
#th-content .e-menus .e-style-t b span{white-space:normal;overflow:visible;text-overflow:clip;font-size:12px;line-height:1.3}
#th-content .e-menus .e-style-t small{white-space:normal;overflow:visible;display:block;font-size:12px;line-height:1.4}
.th-tabs button:focus-visible,.th-palette:focus-visible,.th-font-pair:focus-visible{outline:2px solid var(--e-accent);outline-offset:2px}
.th-font-add{grid-template-columns:minmax(0,1fr) 86px}.th-font-add select{padding-left:8px;padding-right:18px}

/* Premium interaction layer: authoring-only surfaces, never learner styles. */
:root,:root[data-theme="light"]{
 --e-bg:oklch(.978 .003 180);--e-sunk:oklch(.958 .005 180);--e-panel:oklch(1 0 0);
 --e-ink:oklch(.25 .016 200);--e-muted:oklch(.48 .015 200);--e-faint:oklch(.52 .016 200);
 --e-accent:oklch(.46 .085 190);--e-accent-hover:oklch(.39 .075 190);--e-accent-soft:oklch(.935 .025 180);--e-accent-text:oklch(.35 .07 190);
 --e-line:oklch(.905 .008 180);--e-line2:oklch(.8 .015 180);--e-fill:oklch(.946 .006 180);--e-fill2:oklch(.915 .012 180);
 --studio-tertiary:oklch(.962 .021 140);--studio-shadow-color:oklch(.22 .022 185 / .09);
 --studio-scrim:oklch(.18 .018 185 / .45);--e-shadow-xs:0 1px 2px var(--studio-shadow-color);
 --e-shadow-sm:0 2px 6px var(--studio-shadow-color);--e-shadow:0 6px 24px var(--studio-shadow-color);--e-shadow-lg:0 24px 80px var(--studio-shadow-color);
 --studio-error-container:var(--e-danger-soft);--studio-error:var(--e-danger);--studio-on-error:var(--e-accent-ink);--studio-surface-container:var(--e-sunk);
 --studio-primary:var(--e-accent);--studio-primary-container:var(--e-accent-soft);--studio-secondary-container:var(--e-accent-soft);--studio-tertiary-ink:var(--e-warn);
}
:root[data-theme="dark"]{
 --e-bg:oklch(.18 .008 190);--e-sunk:oklch(.225 .01 190);--e-panel:oklch(.25 .011 190);--e-ink:oklch(.94 .005 190);--e-muted:oklch(.76 .012 190);--e-faint:oklch(.69 .012 190);
 --e-accent:oklch(.79 .075 175);--e-accent-hover:oklch(.86 .065 175);--e-accent-ink:oklch(.21 .035 190);--e-accent-soft:oklch(.32 .036 185);--e-accent-text:oklch(.86 .06 175);
 --e-line:oklch(.345 .012 190);--e-line2:oklch(.46 .017 190);--e-fill:oklch(.29 .013 190);--e-fill2:oklch(.34 .018 190);--studio-tertiary:oklch(.3 .025 140);
 --e-danger:oklch(.79 .12 25);--e-danger-soft:oklch(.32 .045 25);--e-warn:oklch(.83 .085 85);--e-warn-soft:oklch(.32 .03 85);--studio-shadow-color:oklch(.09 .005 190 / .35);
}
button:focus-visible,summary:focus-visible{outline:2px solid var(--e-accent);outline-offset:3px;box-shadow:none}
button:not(:disabled):active{transform:translateY(1px)}
button:disabled{cursor:not-allowed}
::selection{background:var(--e-accent-soft);color:var(--e-accent-text)}
.e-scroll,.e-canvas,.e-dialog,.e-media,.e-tracklog,.ai-body{scrollbar-width:thin;scrollbar-color:var(--e-line2) transparent;overscroll-behavior:contain}
.e-top{border-bottom:1px solid var(--e-line);background:var(--e-panel)}
.e-btn{font-size:13px;font-weight:600;transition:background .16s,border-color .16s,box-shadow .16s,transform .16s}
.e-btn:not(.ghost):hover:not(:disabled){box-shadow:var(--e-shadow-sm)}
.e-btn.primary{box-shadow:var(--e-shadow-xs)}
.e-btn.ghost:hover:not(:disabled){background:var(--e-fill)}
.e-status{font-size:12px;padding:0 10px}
.e-status.ok{color:var(--e-ok)}.e-status.dirty{color:var(--e-warn)}.e-status.err{color:var(--e-danger)}
.e-group{padding:3px;border:1px solid var(--e-line);border-radius:24px;background:var(--e-sunk)}
.e-group .e-icbtn{width:30px;height:30px}
.e-rail{gap:8px;padding-top:16px}
.e-rail button{border-radius:8px;height:68px;transition:background .18s,color .18s}
.e-rail button[aria-pressed="true"]{background:var(--e-accent-soft)}
.e-rail button[aria-pressed="true"]::before{content:'';position:absolute;left:-8px;width:3px;height:26px;border-radius:0 3px 3px 0;background:var(--e-accent)}
.e-panel,.e-center{border-radius:0}
.e-panel{border-right:1px solid var(--e-line)}
.e-phead{background:var(--e-panel);height:60px}
.e-phead b{font-size:14px;font-weight:600}
.e-canvasbar{height:60px;gap:10px}
.e-canvas{background:var(--e-sunk);padding-top:30px}
#stage{box-shadow:var(--e-shadow);outline:1px solid var(--e-line)}
.e-les{margin-bottom:3px}
.e-les .pick,.e-les.cur .pick{border-radius:8px;min-height:46px}
.e-les.cur .pick{box-shadow:inset 3px 0 var(--e-accent)}
.e-les .pick .no{font-variant-numeric:tabular-nums;color:var(--e-faint)}
.e-les .acts{border:1px solid var(--e-line);border-radius:8px;padding:3px}
.e-field{margin-bottom:18px}
.e-field>label,.e-lbl{color:var(--e-ink);font-size:12px;font-weight:600;margin-bottom:7px}
.e-in,.e-sel,.e-ta{border:1px solid var(--e-line);border-radius:8px;background:var(--e-sunk);font-size:13px;height:42px;transition:background .16s,border-color .16s,box-shadow .16s}
.e-ta{height:auto;min-height:100px;line-height:1.6}
.e-in:hover,.e-sel:hover,.e-ta:hover{border-color:var(--e-line2)}
.e-in:focus,.e-sel:focus,.e-ta:focus{background:var(--e-panel);border-color:var(--e-accent);box-shadow:var(--e-ring)}
.e-richbar{flex-wrap:wrap;border:1px solid var(--e-line);border-bottom:0;background:var(--e-sunk);gap:2px;border-radius:8px 8px 0 0}
.e-richbar button{width:29px;height:29px;border-radius:5px}
.e-richbar button:hover{background:var(--e-accent-soft);color:var(--e-accent-text)}
.e-rich{font-size:13px;line-height:1.65;min-height:100px;border-radius:0 0 8px 8px;background:var(--e-panel)}
.e-rich mark{background:var(--e-hl);color:var(--e-accent-text)}
.e-help{font-size:12px;line-height:1.6}
.e-h{font-size:12px;color:var(--e-muted);font-weight:600;padding-bottom:8px;border-bottom:1px solid var(--e-line);margin-top:24px}
.e-check{min-height:32px;font-size:12px;gap:10px}
.e-check input{accent-color:var(--e-accent)}
.e-item{border-radius:8px;background:var(--e-sunk);padding:10px 12px 3px}
summary.e-item-h{cursor:pointer;min-height:32px;list-style:none}
.e-item[open]{border-color:var(--e-line2)}
.e-item-h b{white-space:normal;font-size:12px;line-height:1.4}
.e-item .e-icbtn{width:28px;height:28px}
.e-icopt{display:flex;flex-direction:column;align-items:center;gap:8px;border:1px solid var(--e-line);background:var(--e-sunk);color:var(--e-ink);border-radius:8px;padding:14px 6px;cursor:pointer;min-width:0}
.e-icopt span{font-size:12px;overflow-wrap:anywhere}.e-icopt:hover,.e-icopt[aria-pressed=true]{background:var(--e-accent-soft);border-color:var(--e-accent);color:var(--e-accent-text)}
.e-img{align-items:flex-start;flex-direction:column}
.e-img img,.e-img .ph{width:100%;height:126px;border:1px solid var(--e-line)}
.e-img .bts{width:100%;flex-direction:row;flex-wrap:wrap;gap:6px}
.e-img .bts .e-btn{font-size:12px;padding:0 10px;height:32px}
.e-note,.e-warnline{border-radius:8px;font-size:12px;line-height:1.6}
.e-seg{border:1px solid var(--e-line);background:var(--e-sunk);padding:3px;gap:2px;border-radius:8px}
.e-seg button{border:0;border-radius:5px;height:30px;padding:0 10px}
.e-seg button[aria-pressed=true]{background:var(--e-panel);color:var(--e-accent-text);box-shadow:var(--e-shadow-xs)}
#eFocus[aria-pressed=true]{background:var(--e-accent-soft);color:var(--e-accent-text)}
.e-focus .e-body{grid-template-columns:minmax(0,1fr)}
.e-focus .e-body>.e-rail,.e-focus .e-body>.e-panel,.e-focus .studio-inspector,.e-focus #eDScrim{display:none!important}
.e-focus .e-center{grid-column:1}.e-focus .e-canvas{padding-inline:20px}
.e-scrim{backdrop-filter:blur(5px)}
.e-dialog{border-radius:20px;border:1px solid var(--e-line);padding:28px;animation:e-in .22s var(--e-ease)}
.e-dialog h2{font-size:24px;line-height:1.3;font-weight:600;margin-bottom:12px}
.e-dialog p{font-size:13px;line-height:1.6}
.e-dialog .foot{border-top:1px solid var(--e-line);padding-top:18px;margin-top:24px;gap:8px}
.e-dialog .e-radio{position:relative;padding:16px;border-radius:8px;background:var(--e-sunk);gap:12px;margin-bottom:10px}
.e-dialog .e-radio:hover{border-color:var(--e-accent)}
.e-dialog .e-radio:has(input:checked){box-shadow:inset 0 0 0 1px var(--e-accent)}
.e-radio input{width:18px;height:18px;flex-shrink:0}
.e-radio small{margin-top:4px;line-height:1.5}.e-radio b{font-size:14px}
.nw-card,.nw-theme{border-radius:8px;padding:18px;min-height:120px;transition:background .18s,border-color .18s,box-shadow .18s}
.nw-card:hover,.nw-theme:hover{background:var(--e-sunk);border-color:var(--e-accent)}
.nw-card:has(input:checked),.nw-theme:has(input:checked){box-shadow:inset 0 0 0 1px var(--e-accent)}
.nw-card b,.nw-theme b{font-size:14px}.nw-card small{font-size:12px}
.nw-steps li{border-radius:8px;padding:10px 12px}.nw-steps{margin-bottom:24px}
.e-pop{width:min(660px,calc(100vw - 24px));max-height:min(700px,calc(100dvh - 24px));overflow:hidden;display:flex;flex-direction:column;gap:12px;padding:20px;border-radius:12px;box-shadow:var(--e-shadow-lg)}
.e-picker-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-shrink:0}
.e-picker-head h3{font-size:20px;font-weight:600;margin:0}
.e-picker-search{display:flex;align-items:center;gap:10px;background:var(--e-sunk);border:1px solid var(--e-line);border-radius:8px;padding:0 12px;flex-shrink:0;color:var(--e-muted)}
.e-picker-search:focus-within{border-color:var(--e-accent);box-shadow:var(--e-ring)}
.e-picker-search .e-in{border:0;background:transparent;box-shadow:none;height:44px;padding:0}
.e-picker-categories{display:flex;gap:6px;flex-wrap:wrap;flex-shrink:0}
.e-picker-categories .e-btn{font-size:12px;height:30px;padding:0 12px;border:1px solid var(--e-line);background:var(--e-panel)}
.e-picker-categories [aria-pressed=true]{background:var(--e-accent-soft);border-color:var(--e-accent);color:var(--e-accent-text)}
.e-pop .e-lib{overflow:auto;overscroll-behavior:contain;scrollbar-width:thin;min-height:0;gap:8px;padding:2px}
.e-lib button{background:var(--e-sunk);border:1px solid transparent;border-radius:8px;padding:14px 10px;min-height:84px;align-items:center}
.e-lib button:hover,.e-lib button:focus-visible{border-color:var(--e-accent);background:var(--e-accent-soft)}
.e-lib b{font-size:13px}.e-lib small{font-size:12px;line-height:1.5;margin-top:3px}
.e-lib .gi{background:var(--e-panel);border:1px solid var(--e-line);border-radius:8px;width:38px;height:38px}
.e-lib-cat{font-size:12px;color:var(--e-muted);margin:12px 2px 0}
.e-picker-empty{padding:28px;text-align:center;color:var(--e-muted)}
.e-aud-chip{border-radius:8px;background:var(--e-danger-soft);color:var(--e-danger)}
.e-aud-chip.ok{background:var(--e-ok-soft);color:var(--e-ok)}
.e-aud-list li{padding:14px 0;gap:12px;font-size:12px;line-height:1.5}
.e-aud-list .e-btn{font-size:12px}.e-aud-msg small{margin-bottom:3px;font-weight:500}
.e-tracklog .cnt{background:var(--e-accent-soft);color:var(--e-accent-text)}
.e-tracklog .flt button{min-height:30px;font-size:12px;border-radius:6px;transition:background .16s}
.e-tracklog li .k{color:var(--e-accent-ink);background:var(--e-accent)}
.e-tracklog li.event .k{background:var(--e-warn-soft);color:var(--e-warn)}
.e-tracklog li.fresh{background:var(--e-accent-soft)}
.e-preview .bar{gap:10px}.e-preview .bar .e-btn:hover{background:var(--e-fill);border-color:var(--e-line2)}
.e-media{border-radius:12px 0 0 12px;border-left:1px solid var(--e-line);padding:20px;gap:16px}
.e-media .hd b{font-size:20px;font-weight:600}
.e-media .tabs{padding-bottom:12px;border-bottom:1px solid var(--e-line)}
.e-media .tabs button{min-height:34px;font-size:12px;border-radius:6px;padding-inline:12px}
.e-media .tabs button:hover{background:var(--e-sunk)}
.e-media .pick{border-radius:8px;border:1px solid var(--e-line)}
.e-media .pick img{transition:transform .25s var(--e-ease)}
.e-media .pick:hover img{transform:scale(1.035)}
.e-media .nm{margin-top:6px;font-size:12px;font-weight:500}.e-media .tg{font-size:12px}
.e-media .grid{gap:16px 12px}.e-media .rm{color:var(--e-danger);box-shadow:var(--e-shadow-sm)}
.ai-drawer{box-shadow:var(--e-shadow-lg);border-right:1px solid var(--e-line)}
.ai-head{height:60px}.ai-body{padding:20px}
.ai-issue,.ai-err,.ai-sum{border-radius:8px}.ai-sev{font-size:12px}
.e-toast{border-radius:8px;background:var(--e-ink);color:var(--e-panel);font-size:13px;padding:14px 20px;line-height:1.5}
.e-toast .e-btn,.e-toast .e-btn:hover:not(:disabled){color:var(--e-panel);border-color:var(--e-muted);background:transparent}
.studio-rail{background:var(--e-sunk);border-right:1px solid var(--e-line)}
.studio-fab{border-radius:14px;box-shadow:var(--e-shadow-sm)}
.studio-fab:hover{background:var(--e-fill2);box-shadow:var(--e-shadow)}
.studio-heading h1{font-weight:600;font-size:34px}.studio-heading{margin-bottom:32px}
.studio-template{background:var(--e-accent-soft);border:1px solid var(--e-line)}
.studio-template h3{font-weight:600}.studio-blank{border:1px solid var(--e-line)}
.studio-course-cover{height:160px;background:var(--e-accent-soft)}
.studio-cover-art{background:linear-gradient(135deg,var(--c1,var(--e-ink)),var(--c2,var(--e-accent)));border-bottom:1px solid var(--e-line)}
.studio-cover-art b{color:var(--e-accent-ink)}
.studio-stats div{border-radius:6px;padding:8px 10px}.studio-stats dt{font-size:12px}.studio-stats dd{font-size:15px}
.studio-ready.warn{color:var(--e-warn);background:var(--e-warn-soft)}
.studio-search{height:42px;border-radius:8px}.studio-search:focus-within{border-color:var(--e-accent);box-shadow:var(--e-ring);outline:2px solid var(--e-accent);outline-offset:2px}
.l-card{transition:box-shadow .2s,transform .2s,border-color .2s}
.l-card:hover{border-color:var(--e-line2);box-shadow:var(--e-shadow);transform:translateY(-3px)}
.l-cb h3{font-size:20px;font-weight:600}.l-acts{padding:12px 16px;gap:6px}
.l-acts .e-icbtn{width:34px;height:34px}.l-acts .e-btn{font-size:12px}
.studio-empty-saved{padding-block:30px}.studio-empty-saved h3{font-size:15px;font-weight:600}
.th-tabs{position:sticky;top:-18px;z-index:2;box-shadow:var(--e-shadow-xs)}
.th-palette:hover,.th-font-pair:hover,.th-shapes .e-btn:hover,.th-layouts .e-btn:hover{border-color:var(--e-accent)}
.th-palette-colors{height:34px}.th-palette-name{font-size:12px}.th-palette small{font-size:12px}
.th-color{background:var(--e-panel)}.th-color:hover{border-color:var(--e-line2)}
@media(min-width:1180px) and (max-width:1499px){.e-top #eAI,.e-top #eMedia,.e-top #eAudit{width:38px;padding:0}.e-top #eAI .lbl,.e-top #eMedia .lbl,.e-top #eAudit .lbl{display:none}}
@media(max-width:1179px){.e-top #eAI,.e-top #eMedia,.e-top #eAudit{width:36px;padding:0}.e-top #eAI .lbl,.e-top #eMedia .lbl,.e-top #eAudit .lbl{display:none}}
@media(max-width:1024px){.e-rail{border-right:0;padding-top:0;gap:0}.e-rail button{border-radius:0}.e-focus .e-canvas{padding-bottom:100px}.e-panel{border-radius:16px 16px 0 0}.e-focus .e-body{display:flex}.e-dialog{padding:24px}.e-media{top:var(--e-top)}}
@media(max-width:700px){.e-group{padding:0;border:0;background:transparent}.e-top #eMedia,.e-top #eAudit,.e-top #eAI{width:28px;padding:0}.e-app .e-top{gap:3px}.e-app .e-top .e-name b{max-width:82px}.e-canvasbar{padding-inline:8px;gap:4px}.e-seg button{padding:0 8px}.e-dialog{padding:20px}.e-dialog h2{font-size:22px}.e-pop{padding:14px;gap:10px}.e-lib{grid-template-columns:1fr}.e-lib button{min-height:72px}.e-picker-categories{gap:4px}.e-picker-categories .e-btn{font-size:12px;padding-inline:9px}.nw-steps li{padding:8px 6px;gap:5px;font-size:12px}.e-aud-list li{grid-template-columns:48px minmax(0,1fr);gap:8px}.e-aud-list li>.e-btn{grid-column:2;justify-self:start}.e-preview .bar{height:auto;min-height:64px;flex-wrap:wrap;padding:10px;gap:8px}.e-preview .bar b{flex-basis:100%}.e-preview .body{flex-direction:column}.e-tracklog{max-width:100%;flex:0 0 38%;border-left:0;border-top:1px solid var(--e-line)}.studio-stats div{padding:8px}.studio-heading h1{font-size:30px}.studio-search{width:145px}.studio-rail{border-right:0}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

/* Course overview inspector: layout thumbnails */
.e-les-ov{margin-bottom:10px;padding-bottom:10px;border-bottom:1px solid var(--e-line)}
.e-ovlayouts{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:18px}
.e-ovlayout{display:flex;flex-direction:column;gap:6px;padding:8px;border:1px solid var(--e-line);border-radius:10px;background:var(--e-panel);color:var(--e-ink);font:inherit;font-size:12px;text-align:left;cursor:pointer;transition:border-color .15s,background .15s}
.e-ovlayout:hover{border-color:var(--e-line2);background:var(--e-sunk)}
.e-ovlayout[aria-checked="true"]{border-color:var(--e-accent);background:var(--e-accent-soft);color:var(--e-accent-text)}
.e-ovlayout:focus-visible{outline:2px solid var(--e-accent);outline-offset:2px}
.e-ovthumb{display:grid;height:44px;gap:3px;border-radius:5px;background:var(--e-sunk);padding:4px;overflow:hidden}
.e-ovthumb i{background:var(--e-line2);border-radius:2px}
.e-ovthumb i:first-child{background:var(--e-accent)}
.t-full{grid-template-rows:2fr 1fr 1fr}
.t-split{grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr}.t-split i:first-child{grid-row:1/3}
.t-minimal{grid-template-rows:1fr 2fr 2fr}.t-minimal i:first-child{width:40%}
.t-bento{grid-template-columns:2fr 1fr;grid-template-rows:1fr 1fr}
.t-magazine{grid-template-columns:3fr 2fr;grid-template-rows:2fr 1fr}.t-magazine i:first-child{background:var(--e-ink)}.t-magazine i:nth-child(2){grid-row:1/3}
.t-banner{grid-template-rows:1fr}.t-banner i:first-child{grid-area:1/1}.t-banner i:nth-child(2){grid-area:1/1;margin:14px 20px 3px 3px;background:var(--e-panel);opacity:.85}.t-banner i:nth-child(3){display:none}

/* ---- UI review, Oct 2026 (approved items 6, 7). Top bar: short visible labels, grouped Check and Publish actions. ---- */
.e-tgroup{display:inline-flex;align-items:center;gap:4px;flex:0 0 auto}
@media(min-width:1180px){
  .e-top #eAI,.e-top #eMedia,.e-top #eAudit,.e-top #ePreview,.e-top #eShare,.e-top #eExport{width:auto;padding:0 12px}
  .e-top #eAI .lbl,.e-top #eMedia .lbl,.e-top #eAudit .lbl,.e-top #ePreview .lbl,.e-top #eShare .lbl,.e-top #eExport .lbl{display:inline}
  .e-app .e-top .e-name{min-width:0;flex:1 1 auto}
  .e-app .e-top .e-name b,.e-app .e-top .e-name span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
}
@media(min-width:1180px) and (max-width:1499px){
  .e-top #eAudioAI .lbl,.e-app .e-top .e-name span{display:none}
}
/* (item 8) One place for each action in the library: header "New course", header Import / Rise import, and the starter card. */
.studio-rail #studioCreate,.studio-rail #studioImport{display:none}
@media(min-width:701px){.studio-rail #studioRise{display:none}}
/* (item 9) Lesson actions menu */
.e-les .acts .e-icbtn{width:32px;height:32px}
.e-les:has(.e-lmenu:not([hidden])) .acts{display:flex}
.e-lmenu{position:absolute;right:4px;top:calc(100% - 4px);z-index:30;min-width:180px;display:flex;flex-direction:column;padding:6px;background:var(--e-panel);border:1px solid var(--e-line);border-radius:12px;box-shadow:var(--e-shadow-lg)}
.e-lmenu[hidden]{display:none}
.e-lmenu button{display:flex;align-items:center;gap:10px;min-height:40px;padding:0 12px;border:0;border-radius:8px;background:none;color:var(--e-ink);font:500 14px var(--e-font);text-align:left;cursor:pointer}
.e-lmenu button:hover,.e-lmenu button:focus-visible{background:var(--e-fill);outline:none}
.e-lmenu button:focus-visible{box-shadow:inset 0 0 0 2px var(--e-accent)}
.e-lmenu button[aria-disabled="true"]{color:var(--e-faint);cursor:not-allowed}
.e-lmenu button[data-ldel]:not([aria-disabled]){color:var(--e-danger)}
@media(max-width:700px){.e-tgroup{gap:2px}.e-top #eAudioAI{width:28px;padding:0}.e-top #eAudioAI .lbl{display:none}}
.e-les .pick small{font-size:12px}
@media(max-width:700px){.studio-search{width:175px}}
/* Share preview link button (cloud) */
.e-top #eShare{width:36px;height:36px;padding:0;justify-content:center}
@media(min-width:1180px){.e-top #eShare{width:auto;padding:0 12px}}
@media(max-width:700px){.e-top #eShare{width:28px}}
@media(min-width:1180px) and (max-width:1365px){.e-top #eMedia,.e-top #eShare{width:36px;padding:0}.e-top #eMedia .lbl,.e-top #eShare .lbl{display:none}}
@media(max-width:700px){.e-tgroup{gap:0}}