.tllcb{--tllcb-primary:#3E64DE;--tllcb-accent:#B6DFDA;--tllcb-bg:#F6F8FC;--tllcb-surface:#fff;--tllcb-text:#172033;--tllcb-muted:#667085;--tllcb-border:#DDE3EE;--tllcb-radius:16px;color:var(--tllcb-text);background:var(--tllcb-bg);border:1px solid var(--tllcb-border);border-radius:calc(var(--tllcb-radius) + 4px);padding:22px;box-sizing:border-box}.tllcb *{box-sizing:border-box}.tllcb-heading,.tllcb-child-head,.tllcb-structure-head,.tllcb-savebar{display:flex;align-items:center;justify-content:space-between;gap:16px}.tllcb-heading{margin-bottom:16px}.tllcb-heading h2,.tllcb-child-head h2{margin:3px 0 4px;font-size:23px;line-height:1.1;color:var(--tllcb-primary)}.tllcb-heading p,.tllcb-child-head p,.tllcb-structure-head p{margin:0;color:var(--tllcb-muted)}.tllcb-eyebrow{font-size:11px;font-weight:800;letter-spacing:.13em;color:var(--tllcb-primary)}.tllcb-existing{display:flex;align-items:flex-start;gap:10px;margin:0 0 16px;padding:10px 12px;border:1px solid var(--tllcb-border);border-radius:12px;background:var(--tllcb-surface)}.tllcb-existing>div{display:flex;flex-wrap:wrap;gap:6px}.tllcb-existing a{padding:5px 9px;border:1px solid var(--tllcb-border);border-radius:999px;color:var(--tllcb-text);text-decoration:none;font-size:12px}.tllcb-existing a.is-active{border-color:var(--tllcb-primary);background:color-mix(in srgb,var(--tllcb-primary) 8%,#fff);color:var(--tllcb-primary)}.tllcb-grid{display:grid;grid-template-columns:minmax(280px,360px) minmax(0,1fr);gap:18px;align-items:start}.tllcb-sidebar{display:grid;gap:12px}.tllcb-main{min-width:0;display:grid;gap:14px}.tllcb-panel,.tllcb-module{background:var(--tllcb-surface);border:1px solid var(--tllcb-border);border-radius:var(--tllcb-radius);overflow:hidden}.tllcb-panel>summary,.tllcb-module>summary{display:flex;align-items:center;justify-content:space-between;gap:12px;list-style:none;padding:13px 14px;font-weight:800;cursor:pointer}.tllcb-panel>summary::-webkit-details-marker,.tllcb-module>summary::-webkit-details-marker{display:none}.tllcb-panel>summary>span:first-child{display:flex;align-items:center;gap:9px}.tllcb-panel>summary .dashicons{color:var(--tllcb-primary)}.tllcb-chevron{width:18px;height:18px;border-radius:999px;background:color-mix(in srgb,var(--tllcb-primary) 9%,transparent);position:relative;flex:0 0 18px}.tllcb-chevron:before,.tllcb-chevron:after{content:"";position:absolute;left:50%;top:50%;width:7px;height:1.5px;background:var(--tllcb-primary);transform:translate(-50%,-50%)}.tllcb-chevron:after{transform:translate(-50%,-50%) rotate(90deg)}details[open]>.tllcb-chevron:after,.tllcb-panel[open]>summary .tllcb-chevron:after,.tllcb-module[open]>summary .tllcb-chevron:after{transform:translate(-50%,-50%) rotate(0)}.tllcb-panel-body,.tllcb-module-body{display:grid;gap:12px;padding:0 14px 14px;border-top:1px solid var(--tllcb-border)}.tllcb-panel-body{padding-top:14px}.tllcb label{display:grid;gap:6px;font-weight:700;font-size:13px}.tllcb input,.tllcb select,.tllcb textarea{width:100%;min-width:0;max-width:100%;border:1px solid var(--tllcb-border);border-radius:9px;background:#fff;color:var(--tllcb-text);padding:8px 10px;font:inherit}.tllcb textarea{resize:vertical}.tllcb label small{font-weight:400;color:var(--tllcb-muted);line-height:1.45}.tllcb-fields-2{display:grid;grid-template-columns:1fr 1fr;gap:10px}.tllcb-button{appearance:none;display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:34px;padding:6px 10px;border:1px solid var(--tllcb-primary);border-radius:9px;background:#fff;color:var(--tllcb-primary);font:inherit;font-size:13px;line-height:1.2;font-weight:700;text-decoration:none;cursor:pointer}.tllcb-button.is-primary{background:var(--tllcb-primary);color:#fff}.tllcb-button.is-secondary{background:var(--tllcb-surface)}.tllcb-button.is-disabled{opacity:.45;pointer-events:none}.tllcb-link{border:0;background:transparent;padding:4px;color:var(--tllcb-primary);cursor:pointer}.tllcb-link.is-danger,.tllcb .is-danger{color:#b42318}.tllcb-featured{display:grid;gap:10px}.tllcb-featured-preview{display:flex;align-items:center;justify-content:center;gap:8px;min-height:150px;border:1px dashed var(--tllcb-border);border-radius:12px;background:color-mix(in srgb,var(--tllcb-bg) 60%,#fff);color:var(--tllcb-muted);overflow:hidden}.tllcb-featured-preview img{display:block;width:100%;height:180px;object-fit:cover}.tllcb-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.tllcb-structure-head{padding:14px;border:1px solid var(--tllcb-border);border-radius:var(--tllcb-radius);background:var(--tllcb-surface)}.tllcb-structure-head>div{display:flex;align-items:center;gap:10px}.tllcb-structure-head .dashicons{font-size:24px;width:24px;height:24px;color:var(--tllcb-primary)}.tllcb-structure-head h3{margin:0 0 3px;font-size:18px}.tllcb-modules{display:grid;gap:12px}.tllcb-module-summary{display:flex;align-items:center;gap:11px;min-width:0}.tllcb-module-summary>span:last-child{display:grid;gap:2px}.tllcb-module-summary small{font-size:11px;font-weight:500;color:var(--tllcb-muted)}.tllcb-module-index{display:grid;place-items:center;width:32px;height:32px;border-radius:10px;background:color-mix(in srgb,var(--tllcb-primary) 10%,#fff);color:var(--tllcb-primary);font-size:12px}.tllcb-module-body{padding-top:14px}.tllcb-module-toolbar{display:flex;gap:6px;flex-wrap:wrap}.tllcb-module-toolbar button,.tllcb-item-actions button{border:1px solid var(--tllcb-border);border-radius:7px;background:#fff;color:var(--tllcb-muted);padding:5px 8px;cursor:pointer}.tllcb-module-items{display:grid;gap:7px}.tllcb-item{display:flex;align-items:center;gap:10px;min-width:0;padding:9px 10px;border:1px solid var(--tllcb-border);border-radius:10px;background:color-mix(in srgb,var(--tllcb-bg) 50%,#fff)}.tllcb-item-icon{display:grid;place-items:center;width:32px;height:32px;flex:0 0 32px;border-radius:9px;background:color-mix(in srgb,var(--tllcb-primary) 9%,#fff);color:var(--tllcb-primary)}.tllcb-item-copy{display:grid;gap:2px;min-width:0;flex:1}.tllcb-item-copy strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.tllcb-item-copy small{color:var(--tllcb-muted)}.tllcb-item-actions{display:flex;align-items:center;gap:4px}.tllcb-item-actions a{display:grid;place-items:center;width:30px;height:30px;border:1px solid var(--tllcb-border);border-radius:7px;color:var(--tllcb-primary);text-decoration:none}.tllcb-add-content{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:12px;border:1px dashed var(--tllcb-border);border-radius:12px}.tllcb-add-content>div:not(.tllcb-create-actions){display:grid;grid-template-columns:minmax(0,1fr) auto;gap:7px}.tllcb-create-actions{grid-column:1/-1;display:flex;gap:8px;flex-wrap:wrap}.tllcb-empty,.tllcb-module-empty{padding:16px;border:1px dashed var(--tllcb-border);border-radius:12px;color:var(--tllcb-muted);text-align:center}.tllcb-hint,.tllcb-flash{display:flex;gap:10px;padding:12px 14px;border-radius:12px;border:1px solid var(--tllcb-border);background:var(--tllcb-surface)}.tllcb-hint .dashicons{color:var(--tllcb-primary)}.tllcb-hint p{margin:3px 0 0;color:var(--tllcb-muted)}.tllcb-flash{margin-bottom:14px}.tllcb-flash.is-success{border-color:#a7d7ba;background:#f0fbf4;color:#176b3a}.tllcb-flash.is-error{border-color:#f3b6b2;background:#fff4f3;color:#9e241c}.tllcb-savebar{position:sticky;bottom:12px;z-index:8;margin-top:16px;padding:12px 14px;border:1px solid var(--tllcb-border);border-radius:14px;background:color-mix(in srgb,var(--tllcb-surface) 92%,transparent);backdrop-filter:blur(12px);box-shadow:0 8px 30px rgba(15,23,42,.08)}.tllcb-save-summary{color:var(--tllcb-muted);font-size:13px}.tllcb-child-editor{display:grid;gap:16px}.tllcb-child-head{padding-bottom:14px;border-bottom:1px solid var(--tllcb-border)}.tllcb-child-head>div{flex:1}.tllcb-lesson-meta{display:grid;grid-template-columns:minmax(0,1fr) 180px auto;gap:10px;align-items:end;padding:14px;border:1px solid var(--tllcb-border);border-radius:14px;background:var(--tllcb-surface);margin-bottom:14px}.tllcb-embedded-builder .tll-builder-frontend-context{margin:0}.tllcb-admin-wrap .tllcb{margin-top:12px}.tllcb-notice{padding:12px 14px;border:1px solid #dcdcde;border-radius:10px;background:#fff}
@media(max-width:980px){.tllcb-grid{grid-template-columns:1fr}.tllcb-sidebar{grid-template-columns:repeat(2,minmax(0,1fr))}.tllcb-sidebar>.tllcb-panel:first-child{grid-column:1/-1}.tllcb-lesson-meta{grid-template-columns:1fr 160px}}
@media(max-width:680px){.tllcb{padding:12px}.tllcb-heading,.tllcb-child-head,.tllcb-structure-head,.tllcb-savebar{align-items:flex-start;flex-direction:column}.tllcb-sidebar,.tllcb-fields-2,.tllcb-add-content,.tllcb-lesson-meta{grid-template-columns:1fr}.tllcb-sidebar>.tllcb-panel:first-child,.tllcb-create-actions{grid-column:auto}.tllcb-add-content>div:not(.tllcb-create-actions){grid-template-columns:1fr}.tllcb-item{align-items:flex-start}.tllcb-item-actions{flex-wrap:wrap;justify-content:flex-end}}

/* Autosave navigation flow (v1.41.1) */
.tllcb-save-meta{display:flex;align-items:center;gap:10px;min-width:0;flex-wrap:wrap}.tllcb-autosave-status{display:inline-flex;align-items:center;min-height:26px;padding:4px 9px;border-radius:999px;background:color-mix(in srgb,var(--tllcb-primary) 6%,var(--tllcb-surface));color:var(--tllcb-muted);font-size:11px;font-weight:700;line-height:1.2;transition:.18s ease}.tllcb-autosave-status.is-saving{color:var(--tllcb-primary);background:color-mix(in srgb,var(--tllcb-primary) 10%,var(--tllcb-surface))}.tllcb-autosave-status.is-saved{color:#176b3a;background:#eefaf2}.tllcb-autosave-status.is-dirty{color:#8a5a00;background:#fff8e6}.tllcb-autosave-status.is-error{color:#9e241c;background:#fff1f0}.tllcb-button:disabled,.tllcb-button.is-busy{opacity:.65;cursor:wait;pointer-events:none}.tllcb-create-actions .tllcb-button{white-space:nowrap}
@media(max-width:680px){.tllcb-save-meta{display:grid;gap:6px}.tllcb-autosave-status{width:max-content;max-width:100%}}

/* Per-course / per-lesson design overrides (v2.1.0) */
.tllcb-design-toggle{display:flex!important;grid-template-columns:none!important;align-items:flex-start;gap:10px;padding:12px;border:1px solid var(--tllcb-border);border-radius:12px;background:color-mix(in srgb,var(--tllcb-bg) 58%,var(--tllcb-surface));font-weight:400!important}.tllcb-design-toggle input{width:auto!important;margin-top:3px;flex:0 0 auto}.tllcb-design-toggle>span{display:grid;gap:3px}.tllcb-design-toggle strong{font-size:13px}.tllcb-design-toggle small{color:var(--tllcb-muted);line-height:1.4}.tllcb-design-sections{display:grid;gap:16px}.tllcb-design-sections>div{display:grid;gap:9px}.tllcb-design-sections h4{margin:0;font-size:12px;text-transform:uppercase;letter-spacing:.07em;color:var(--tllcb-muted)}.tllcb-design-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.tllcb-design-field{min-width:0}.tllcb-design-color{display:grid;grid-template-columns:40px minmax(0,1fr);gap:6px;min-width:0}.tllcb-design-color input[type=color]{width:40px!important;height:38px;padding:1px}.tllcb-design-color input[type=text]{min-width:0}.tllcb-lesson-design-panel{margin:0 0 14px}.tllcb-lesson-design-panel .tllcb-design-grid{grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}
@media(max-width:520px){.tllcb-design-grid{grid-template-columns:1fr}}

/* Design System radius/padding tokens (v2.3.0) */
.tllcb{--tllcb-pad:16px;padding:var(--tllcb-pad)}
.tllcb-panel,.tllcb-module,.tllcb-item,.tllcb-structure-head,.tllcb-savebar,.tllcb-featured-preview,.tllcb-notice{border-radius:var(--tllcb-radius)}
.tllcb-panel-body,.tllcb-module-body,.tllcb-item,.tllcb-structure-head,.tllcb-savebar,.tllcb-notice{padding:var(--tllcb-pad)}
.tllcb-button,.tllcb input,.tllcb select,.tllcb textarea{border-radius:max(4px,calc(var(--tllcb-radius) * .65))}
.tllcb-design-number{display:flex;align-items:center;gap:6px}.tllcb-design-number input{width:100%;min-width:0}.tllcb-design-number small{color:var(--tllcb-muted);font-weight:500}

.tllcb-narration-status{display:flex;align-items:flex-start;gap:10px;padding:11px 12px;border:1px solid var(--tllcb-border);border-radius:10px;background:color-mix(in srgb,var(--tllcb-bg) 65%,#fff)}.tllcb-narration-status>.dashicons{flex:0 0 20px;color:var(--tllcb-primary)}.tllcb-narration-status>div{display:grid;gap:2px}.tllcb-narration-status small{color:var(--tllcb-muted);font-weight:400}.tllcb-narration-status.is-warning{border-color:#f5cc7a;background:#fff9e9}.tllcb-narration-status.is-warning>.dashicons{color:#b46b00}.tllcb-narration-audio{display:grid;gap:9px;padding:12px;border:1px solid var(--tllcb-border);border-radius:11px;background:color-mix(in srgb,var(--tllcb-bg) 50%,#fff)}.tllcb-narration-audio>div{display:grid;gap:2px}.tllcb-narration-audio small{color:var(--tllcb-muted)}.tllcb-narration-audio audio{width:100%}.tllcb-inline-check{display:flex!important;grid-template-columns:auto 1fr!important;align-items:center;gap:8px!important;font-weight:600!important}.tllcb-inline-check input{width:auto!important}.tllcb-narration-help{display:flex;align-items:flex-start;gap:7px;margin:0;color:var(--tllcb-muted);font-size:12px;line-height:1.45}.tllcb-narration-help .dashicons{color:var(--tllcb-primary);flex:0 0 18px}
.tllcb-narration-preview-tools{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.tllcb-narration-preview-status{color:var(--tllcb-muted);font-size:11px;line-height:1.4}.tllcb-narration-preview-audio{border-color:color-mix(in srgb,var(--tllcb-primary) 35%,var(--tllcb-border));background:color-mix(in srgb,var(--tllcb-primary) 5%,#fff)}.tllcb-narration-preview-audio[hidden]{display:none!important}.tllcb-button.is-busy{opacity:.7;pointer-events:none}.tllcb-button.is-busy .dashicons{animation:tllcb-spin .8s linear infinite}@keyframes tllcb-spin{to{transform:rotate(360deg)}}

.tllcb-workload-field{display:grid;gap:6px}.tllcb-field-label{font-weight:700;font-size:13px}.tllcb-workload-field>small{color:var(--tllcb-muted);font-size:11px;line-height:1.45}.tllcb-workload-grid{display:grid;grid-template-columns:1fr 1fr;gap:7px}.tllcb-workload-grid label{font-size:11px;font-weight:600}.tllcb-add-content .tllcb-button,.tllcb-create-actions .tllcb-button{font-size:12px;min-height:32px;padding:5px 9px}.tllcb-structure-head h3{font-size:16px}
@media(max-width:680px){.tllcb-workload-grid{grid-template-columns:1fr 1fr}}


/* Course builder space-aware layout (v2.9.3) */
.tllcb{container-type:inline-size;container-name:tll-course-builder}
@container tll-course-builder (min-width:1180px){
  .tllcb-grid{grid-template-columns:minmax(360px,420px) minmax(0,1fr);gap:20px}
  .tllcb-sidebar{display:grid;grid-template-columns:1fr;gap:12px}
  .tllcb-main{grid-column:auto;order:initial}
  .tllcb-sidebar>.tllcb-panel{grid-column:auto;order:initial}
}
@container tll-course-builder (max-width:1179px){
  .tllcb-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;align-items:start}
  .tllcb-sidebar{display:contents}
  .tllcb-course-panel{grid-column:1/-1;order:1}
  .tllcb-main{grid-column:1/-1;order:2}
  .tllcb-presentation-panel{grid-column:1;order:3}
  .tllcb-conclusion-panel{grid-column:2;order:3}
  .tllcb-course-design-panel{grid-column:1/-1;order:4}
  .tllcb-structure-head{padding:16px 18px}
  .tllcb-structure-head>div{min-width:0}
  .tllcb-structure-head p{max-width:680px}
  .tllcb-module-body{gap:14px}
  .tllcb-add-content{grid-template-columns:1fr 1fr;padding:14px}
  .tllcb-add-content>div:not(.tllcb-create-actions){grid-template-columns:minmax(180px,1fr) auto}
  .tllcb-featured-preview{min-height:180px}
}
@container tll-course-builder (max-width:720px){
  .tllcb-grid{grid-template-columns:1fr}
  .tllcb-course-panel,.tllcb-main,.tllcb-presentation-panel,.tllcb-conclusion-panel,.tllcb-course-design-panel{grid-column:1}
  .tllcb-presentation-panel{order:3}.tllcb-conclusion-panel{order:4}.tllcb-course-design-panel{order:5}
  .tllcb-fields-2,.tllcb-add-content{grid-template-columns:1fr}
  .tllcb-add-content>div:not(.tllcb-create-actions){grid-template-columns:1fr}
  .tllcb-structure-head{align-items:flex-start;flex-direction:column}
  .tllcb-structure-head .tllcb-button{width:100%}
}
@container tll-course-builder (max-width:480px){
  .tllcb-workload-grid{grid-template-columns:1fr 1fr}
  .tllcb-module-toolbar,.tllcb-create-actions{display:grid;grid-template-columns:1fr 1fr;width:100%}
  .tllcb-module-toolbar button,.tllcb-create-actions .tllcb-button{width:100%}
}
.tllcb-publish-note{display:flex;gap:10px;align-items:flex-start;padding:11px 12px;border:1px solid color-mix(in srgb,var(--tllcb-primary) 20%,var(--tllcb-border));border-radius:12px;background:color-mix(in srgb,var(--tllcb-primary) 5%,var(--tllcb-surface));color:var(--tllcb-text)}.tllcb-publish-note>.dashicons{color:var(--tllcb-primary);margin-top:1px}.tllcb-publish-note>span:last-child{display:grid;gap:2px}.tllcb-publish-note small{color:var(--tllcb-muted);line-height:1.35}.tllcb-inline-publish{display:flex;align-items:center;gap:6px;min-height:40px;padding:0 4px;color:var(--tllcb-muted);font-size:12px;font-weight:700}.tllcb-inline-publish .dashicons{color:var(--tllcb-primary);font-size:17px;width:17px;height:17px}

/* Safe editing: recovered drafts and version history (4.0.0-beta.12.8). */
.tllcb-lesson-save-status{margin:8px 0 14px;padding:10px 14px;border:1px solid var(--tllcb-border,#dde3ee);border-radius:10px;color:var(--tllcb-text,#172033);font-size:13px}
.tllcb-lesson-save-status.is-error{border-color:#c2410c;color:#9a3412;background:#fff7ed}
.tllcb-recover-browser,.tllcb-history-panel{margin:16px 0;padding:18px;border:1px solid var(--tllcb-border,#dde3ee);border-radius:12px;background:var(--tllcb-surface,#fff)}
.tllcb-recover-browser strong,.tllcb-history-panel h3{display:block;margin:0 0 7px;font-size:17px}
.tllcb-recover-browser p,.tllcb-history-panel p{margin:0 0 12px;color:var(--tllcb-muted,#667085);font-size:13px}
.tllcb-backup-list{display:grid;gap:10px}
.tllcb-backup-list form{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:9px 0;border-top:1px solid var(--tllcb-border,#dde3ee)}
.tllcb-backup-list form span{font-size:13px}