/* Course production: directory on the left, full-width preview and editing on the right. */
body[data-page=upload].has-course .cu-head{padding:0 0 8px;border:0;gap:8px}
body[data-page=upload].has-course .cu-head h1,body[data-page=upload].has-course .cu-head .muted,body[data-page=upload].has-course .workflow-lifecycle{display:none}
body[data-page=upload].has-course .cu-head .eyebrow{margin:0}
body[data-page=upload].has-course .cu-head>.btn{min-height:34px;padding:6px 12px;font-size:12px}
body[data-page=upload].has-course .cu-course-switch{margin:0}
body[data-page=upload].has-course .cu-course-switch>summary{padding:5px 0;font-size:12px}
body[data-page=upload].has-course #notice{font-size:12px;line-height:1.5;min-height:0;margin:4px 0;padding:0}
body[data-page=upload].has-course #notice:empty{display:none}
body[data-page=upload].has-course .cu-toolbar{position:sticky;top:var(--header-h);z-index:20;background:var(--paper);padding:10px 0 12px;border-bottom:1px solid var(--line);margin-bottom:14px;gap:10px}
body[data-page=upload].has-course .cu-toolbar h2{font-size:20px}
body[data-page=upload].has-course .cu-toolbar #save-state{font-size:12px}
body[data-page=upload].has-course .cu-toolbar .btn{padding:8px 12px;font-size:13px;min-height:38px}
body[data-page=upload] .cu-editor{padding:14px;min-width:0}
body[data-page=upload] .cu-editing-lesson>.cu-location,body[data-page=upload] .cu-pages>h3{display:none}
body[data-page=upload] .cu-editing-lesson>h2{font-size:16px;margin:0 0 10px}
body[data-page=upload] .cu-pages{margin:0;border:0;padding:0}
body[data-page=upload] .cu-lesson-head{gap:8px;justify-content:flex-start}
body[data-page=upload] .cu-lesson-head h3{font-size:16px;margin:0 auto 0 0}
body[data-page=upload] .cu-lesson-head .btn{padding:7px 10px;min-height:36px;font-size:12px}
body[data-page=upload] .cu-editor-guide{font-size:12px;margin:6px 0;color:var(--ink-3)}
body[data-page=upload] .cu-page-tools{margin:10px 0;gap:8px}
body[data-page=upload] .cu-page-tools .btn{font-size:12px;min-height:36px;padding:7px 10px}
body[data-page=upload] .cu-page-tools .input{height:38px}
body[data-page=upload] .cu-class-preview{display:block;width:100%;height:clamp(520px,65dvh,900px);border-radius:8px}
body[data-page=upload] .cu-production-options{margin:10px 0;gap:6px}
body[data-page=upload] .cu-production-options .btn{font-size:12px;padding:7px 10px;min-height:36px}
body[data-page=upload] .cu-page-editor{border-top:1px solid var(--line);margin-top:16px;padding-top:8px}
body[data-page=upload] .cu-lesson-settings{margin:18px 0 0;border-top:1px solid var(--line);padding-top:14px}
body[data-page=upload] .cu-lesson-settings>summary,body[data-page=upload] .cu-import>summary{cursor:pointer;font-weight:600;font-size:14px;padding:6px 0}
body[data-page=upload] .cu-import{margin-top:18px}
body[data-page=upload] .cu-import h3{margin-top:16px}
body[data-page=upload] .cu-expanded{position:fixed;inset:var(--header-h) 0 0;z-index:100;background:var(--paper);overflow:auto;padding:16px 24px}
body[data-page=upload] .cu-expanded .cu-class-preview{height:calc(100dvh - var(--header-h) - 150px);min-height:360px}
body[data-page=upload] .cu-expanded .cu-lesson-head{position:sticky;top:-16px;background:var(--paper);z-index:2;padding:8px 0}
@media(min-width:961px){body.studio-workspace[data-page=upload] .studio-sidebar{width:176px;padding-inline:10px}body.studio-workspace[data-page=upload] #main.cu{margin-left:176px;padding:16px 18px 40px;max-width:none}body.studio-workspace[data-page=upload] .site-footer,body.studio-workspace[data-page=upload]>.workspace-access-note{margin-left:176px}body[data-page=upload] .cu-layout{grid-template-columns:190px minmax(0,1fr);gap:14px}body[data-page=upload] .cu-tree{padding:14px;top:calc(var(--header-h) + 90px);max-height:calc(100dvh - var(--header-h) - 110px);overflow:auto}body[data-page=upload] .cu-tree-head{gap:6px}body[data-page=upload] .cu-tree .btn{font-size:12px;padding:7px 9px;min-height:34px}body[data-page=upload] .cu-tree p{font-size:11px}body[data-page=upload] .cu-node{font-size:13px;padding-block:9px}}
@media(max-width:960px){body[data-page=upload] .cu-class-preview{height:clamp(440px,62dvh,720px)}body[data-page=upload].has-course .cu-toolbar{position:static}body[data-page=upload] .cu-expanded{inset:0;padding:12px}body[data-page=upload] .cu-expanded .cu-class-preview{height:65dvh;min-height:300px}}
@media(max-width:720px){body[data-page=upload] .cu-class-preview{height:380px}body[data-page=upload] .cu-editor{padding:10px}body[data-page=upload] .cu-lesson-head [data-edit-status]{flex-basis:100%;order:4}body[data-page=upload] .cu-toolbar>div:last-child{gap:6px}body[data-page=upload] .cu-page-tools{flex-wrap:wrap}body[data-page=upload] .cu-page-tools select{flex-basis:100%}body[data-page=upload] .cu-expanded .cu-lesson-head{top:-12px}}
@media(min-width:1101px){.cu-side-edit .cu-preview-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:14px;align-items:start}.cu-side-edit .cu-page-editor{margin:0!important;border-top:0!important;padding:0 8px!important;max-height:clamp(520px,65dvh,900px);overflow:auto}.cu-side-edit .cu-page-editor>label:first-child{margin-top:0}.cu-side-edit .cu-page-editor .cu-item-fields{padding:10px}.cu-side-edit.cu-expanded .cu-page-editor{max-height:calc(100dvh - var(--header-h) - 150px)}}
@media(max-width:1100px){body[data-page=upload] [data-edit-layout]{display:none}}
body.cu-preview-focused .studio-sidebar{visibility:hidden;pointer-events:none}

@media(min-width:1101px){body[data-page=upload] .cu-layout{grid-template-columns:160px minmax(0,1fr);gap:12px}body[data-page=upload] .cu-tree{padding:10px}body[data-page=upload] .cu-tree-head{align-items:flex-start}body[data-page=upload] .cu-tree-head>.btn{font-size:11px;padding-inline:6px}.cu-side-edit .cu-page-editor{scrollbar-gutter:stable}.cu-side-edit .cu-class-preview{min-width:0}}
.cu-layout-controls{display:flex;gap:6px;margin-bottom:6px}.cu-course-identity{min-width:0}.cu-layout-controls .btn{font-size:12px!important;padding:5px 8px!important;min-height:30px!important}
body[data-page=upload].cu-menu-collapsed .studio-sidebar,body[data-page=upload].cu-directory-collapsed .cu-tree{display:none!important}
body[data-page=upload].cu-directory-collapsed .cu-layout{grid-template-columns:minmax(0,1fr)}
.cu-editor-splitter{display:none}
@media(min-width:901px){body.studio-workspace[data-page=upload].cu-menu-collapsed #main.cu{margin-left:0}body.studio-workspace[data-page=upload].cu-menu-collapsed .site-footer,body.studio-workspace[data-page=upload].cu-menu-collapsed>.workspace-access-note{margin-left:0}}
@media(min-width:1101px){.cu-side-edit .cu-preview-layout{grid-template-columns:minmax(0,1fr) 12px var(--cu-editor-width,260px);gap:4px}.cu-side-edit .cu-editor-splitter{display:block;align-self:stretch;min-height:120px;cursor:col-resize;touch-action:none;position:relative;border-radius:4px}.cu-editor-splitter::after{content:'';position:absolute;left:5px;top:0;bottom:0;width:2px;background:var(--line);border-radius:2px}.cu-editor-splitter:hover,.cu-editor-splitter:focus-visible{background:var(--sun-wash,#fff3bd);outline:2px solid var(--sun,#f4d34f);outline-offset:0}.cu-editor-splitter:hover::after{background:var(--ink-3)}}
body.cu-resizing-editor,body.cu-resizing-editor *{cursor:col-resize!important;user-select:none!important}body.cu-resizing-editor .cu-class-preview{pointer-events:none}

.cu-ai-dialog{width:min(920px,94vw);max-height:90vh;overflow:auto;border:1px solid #cbd5e1;border-radius:18px;padding:26px;background:#fff;color:#17263b;box-shadow:0 28px 90px #10243b45}.cu-ai-dialog::backdrop{background:#10243b80}.cu-ai-head,.cu-ai-controls,.cu-ai-actions{display:flex;gap:16px;align-items:center;justify-content:space-between}.cu-ai-head h2{margin:0}.cu-ai-head p{margin:8px 0}.cu-ai-dialog label{display:block;margin:14px 0}.cu-ai-dialog .input{display:block;width:100%;box-sizing:border-box;margin-top:6px}.cu-ai-controls label{flex:1}.cu-ai-card{border:1px solid #d5dfe7;background:#f8fafc;border-radius:12px;padding:18px;margin-top:18px}.cu-ai-card img{width:240px;max-width:100%;border-radius:8px}.cu-ai-warning{padding:12px;background:#fff4d6}.cu-ai-dialog [data-ai-status]{min-height:24px;color:#245a62}@media(max-width:600px){.cu-ai-dialog{padding:16px}.cu-ai-controls,.cu-ai-actions{display:block}}
.cu-ai-dialog{width:min(1080px,94vw)}.cu-brand-library{border:1px solid #dedace;border-radius:12px;padding:18px;margin:18px 0;background:#fbfaf6}.cu-brand-top{display:flex;justify-content:space-between;gap:16px;align-items:start}.cu-brand-top h3{margin:0}.cu-brand-selects{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.cu-brand-summary{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}.cu-brand-chip{display:inline-flex;align-items:center;gap:8px;padding:6px 10px;background:white;border:1px solid #dedace;border-radius:20px;font-size:12px}.cu-brand-chip i{width:16px;height:16px;border-radius:50%}.cu-brand-chip button{border:0;background:none;cursor:pointer}.cu-history{margin-top:16px}.cu-history summary{cursor:pointer;font-weight:600}.cu-history-pages{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.cu-history-page{padding:12px;background:white;border:1px solid #ddd;border-radius:8px}.cu-history-page img{width:100%;height:140px;object-fit:contain}.cu-history-work{padding:12px 0;border-top:1px solid #ddd}.cu-history-work h4{margin:8px 0}.cu-pair-code{display:flex;align-items:center;gap:20px;background:#fff;padding:16px;border:1px solid #ddd;border-radius:10px}.cu-pair-code img{width:180px;height:180px}.cu-pair-code b{letter-spacing:3px}.cu-brand-library [data-ttb-notice]{color:#245a62}.cu-brand-library [data-ttb-works]{max-height:480px;overflow:auto}@media(max-width:680px){.cu-brand-selects,.cu-history-pages{grid-template-columns:1fr}.cu-brand-top,.cu-pair-code{display:block}}
.cu-brand-chip img{width:38px;height:38px;border-radius:6px;object-fit:contain}