*{box-sizing:border-box}body{margin:0;background:#f7f7f5;color:#171717;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif}.topbar{height:68px;background:#fff;border-bottom:1px solid #e7e7e7;display:flex;align-items:center;gap:14px;padding:0 22px;position:sticky;top:0;z-index:20}.brand,.class-switch{border:0;background:none;cursor:pointer;font-weight:800;white-space:nowrap}.brand{display:flex;align-items:center;gap:8px}.brand-mark{width:30px;height:30px;border-radius:8px;background:#111;color:#fff;display:grid;place-items:center;font-size:12px}.class-switch{color:#555}.search-wrap{max-width:500px;flex:1;background:#f0f1f4;border-radius:10px;height:42px;display:flex;align-items:center;padding:0 13px;gap:8px;color:#777}.search-wrap input{width:100%;border:0;outline:0;background:none;font-size:14px}.admin-btn{border:1px solid #ddd;background:#fff;border-radius:9px;padding:9px 12px;font-weight:700;cursor:pointer}.view{max-width:1180px;margin:auto;padding:34px 22px}.hidden{display:none!important}.classroom-head{margin-bottom:25px}.classroom-head h1{font-size:34px;margin:5px 0}.muted{color:#777}.eyebrow{font-size:11px;letter-spacing:.12em;font-weight:800;color:#888}.course-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.course-card{background:#fff;border:1px solid #e5e5e5;border-radius:14px;overflow:hidden;cursor:pointer;box-shadow:0 2px 10px #00000008}.course-image{height:175px;background:#292442;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:900;font-size:25px;text-align:center}.course-image img{width:100%;height:100%;object-fit:cover}.course-body{padding:16px}.course-body h3{margin:0 0 7px;font-size:18px}.course-body p{margin:0 0 15px;color:#777;font-size:13px;min-height:34px}.progress{height:8px;border-radius:99px;background:#e5e9f2;overflow:hidden}.progress i{display:block;height:100%;background:#4bb59b}.pct{font-size:12px;color:#777;margin-top:7px}.back{border:0;background:none;color:#666;font-weight:700;padding:0;margin-bottom:18px;cursor:pointer}.course-hero{margin-bottom:22px}.course-hero h1{margin:5px 0}.course-layout{display:grid;grid-template-columns:320px 1fr;gap:24px;align-items:start}.lesson-sidebar{background:#fff;border:1px solid #e3e3e3;border-radius:14px;padding:14px;position:sticky;top:84px;max-height:calc(100vh - 100px);overflow:auto}.progress-row{display:flex;justify-content:space-between;font-size:13px;margin-bottom:7px}.module{margin-top:14px}.module-title{font-weight:800;font-size:14px;padding:9px 8px}.lesson-link{border:0;background:none;width:100%;text-align:left;padding:10px 9px;border-radius:8px;color:#555;cursor:pointer;display:flex;justify-content:space-between;gap:8px}.lesson-link:hover{background:#f5f5f5}.lesson-link.active{background:#f1d8b2;color:#222;font-weight:700}.check{color:#3a9f88}.lesson-panel{background:#fff;border:1px solid #e3e3e3;border-radius:14px;padding:24px;min-height:540px}.lesson-panel h2{margin-top:5px}.video{position:relative;padding-top:56.25%;background:#111;border-radius:12px;overflow:hidden;margin:18px 0}.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}.lesson-placeholder{background:#f1f1f1;border-radius:12px;padding:42px;text-align:center;color:#777}.lesson-copy{line-height:1.7;color:#555;white-space:pre-wrap}.resource{display:inline-block;background:#f1f1f1;color:#222;text-decoration:none;padding:9px 12px;border-radius:8px;margin:5px}.lesson-footer{display:flex;justify-content:space-between;gap:10px;margin-top:25px;padding-top:18px;border-top:1px solid #eee}.lesson-footer button{border:1px solid #ddd;background:#fff;border-radius:9px;padding:10px 13px;cursor:pointer}.complete{background:#111!important;color:#fff!important}.overlay{position:fixed;inset:0;background:#0008;z-index:100;padding:40px 20px;overflow:auto}.modal{max-width:720px;background:#fff;border-radius:16px;padding:25px;margin:auto;position:relative}.smallmodal{max-width:400px}.close{position:absolute;right:15px;top:10px;border:0;background:none;font-size:28px;cursor:pointer}.classroom-cards{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:20px}.classroom-card{border:1px solid #ddd;border-radius:12px;padding:18px;cursor:pointer}.classroom-card:hover{background:#f5f5f5}.primary,.secondary,.danger{border:0;border-radius:9px;padding:10px 13px;font-weight:700;cursor:pointer}.primary{background:#111;color:#fff}.secondary{background:#eee;color:#222}.danger{background:#ffe5e5;color:#a40019}.wide{width:100%;margin-top:10px}.error{color:#b00020;font-size:13px}.admin-head{display:flex;justify-content:space-between;gap:18px;align-items:end;margin-bottom:20px}.admin-actions{display:flex;gap:7px;flex-wrap:wrap}.admin-layout{display:grid;grid-template-columns:280px 1fr;gap:18px}.panel{background:#fff;border:1px solid #e4e4e4;border-radius:14px;padding:18px}.panel-head{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:14px}.panel-head h2{margin:0;font-size:18px}.admin-item{padding:11px;border-radius:8px;cursor:pointer;margin:3px 0}.admin-item.active,.admin-item:hover{background:#f0f0f0}.small{font-size:12px;padding:8px 10px}.import-btn{display:inline-flex;align-items:center}.import-btn input{display:none}label{display:block;font-size:13px;font-weight:700;margin:13px 0}label input,label textarea{display:block;width:100%;margin-top:6px;border:1px solid #ddd;border-radius:9px;padding:10px;font:inherit}.admin-course{border:1px solid #e4e4e4;border-radius:12px;padding:13px;margin:10px 0}.admin-course-head{display:flex;justify-content:space-between;gap:8px;align-items:center}.module-admin{border:1px solid #eee;border-radius:10px;padding:12px;margin:10px 0}.module-admin input,.lesson-admin input,.lesson-admin textarea{width:100%;border:1px solid #ddd;border-radius:8px;padding:9px;font:inherit;margin:4px 0}.module-row{display:grid;grid-template-columns:1fr 120px;gap:8px}.lesson-admin{background:#f7f7f7;border-radius:9px;padding:10px;margin:8px 0}.admin-buttons{display:flex;gap:7px;flex-wrap:wrap;margin-top:7px}.image-preview{width:100%;max-height:180px;object-fit:cover;border-radius:9px;margin:6px 0}.empty{text-align:center;padding:45px 10px;color:#777}.toast{position:fixed;left:50%;bottom:22px;transform:translateX(-50%);background:#111;color:#fff;border-radius:9px;padding:10px 15px;display:none;z-index:200}@media(max-width:850px){.course-grid{grid-template-columns:1fr 1fr}.course-layout{grid-template-columns:1fr}.lesson-sidebar{position:static;max-height:none}.admin-layout{grid-template-columns:1fr}.admin-head{align-items:stretch;flex-direction:column}}@media(max-width:560px){.topbar{padding:0 10px;gap:7px}.brand span:last-child,.class-switch span{display:none}.course-grid{grid-template-columns:1fr}.view{padding:25px 13px}.lesson-panel{padding:17px}.classroom-cards{grid-template-columns:1fr}.module-row{grid-template-columns:1fr}.admin-actions{width:100%}}

.lesson-copy{margin:16px 0;line-height:1.8;white-space:pre-wrap}.lesson-heading{font-size:22px;margin:22px 0 10px}.lesson-image{margin:18px 0}.lesson-image img{display:block;width:100%;max-height:720px;object-fit:contain;border-radius:12px;background:#f4f4f4}.lesson-image figcaption{font-size:12px;color:#777;margin-top:6px}.lesson-empty-note{padding:25px;background:#f7f7f7;border-radius:10px;color:#777}.block-toolbar{display:flex;gap:7px;flex-wrap:wrap;align-items:center;padding:10px;background:#f1f1f1;border-radius:9px;margin:12px 0}.block-toolbar span{font-size:12px;font-weight:800;color:#666}.content-block-admin{background:#fff;border:1px solid #ddd;border-radius:10px;padding:10px;margin:9px 0}.block-head{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:6px}.block-actions{display:flex;gap:5px}.content-block-admin textarea,.content-block-admin input[type=text]{width:100%;border:1px solid #ddd;border-radius:8px;padding:9px;font:inherit;margin-top:5px}.content-block-admin textarea{min-height:100px;resize:vertical}.image-upload{display:inline-flex!important;width:auto!important;align-items:center;gap:8px;background:#eee;border-radius:8px;padding:8px 10px;margin:6px 0!important;cursor:pointer}.image-upload input{display:none}.block-preview{display:block;width:100%;max-height:260px;object-fit:contain;border-radius:8px;background:#f5f5f5;margin:7px 0}.lesson-head{display:flex;gap:10px;align-items:center}.lesson-head .ltitle{flex:1}.lesson-head .admin-buttons{margin:0}.lesson-admin{margin:12px 0}.module-admin>.admin-buttons{margin-bottom:8px}@media(max-width:560px){.lesson-head{display:block}.lesson-head .admin-buttons{margin-top:7px}.block-actions .small{padding:6px 8px}}
.image-wrap{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.block-actions{display:flex;gap:6px;flex-wrap:wrap}.content-block-admin{border:1px solid var(--line);border-radius:12px;padding:12px;margin:10px 0;background:var(--card)}
.image-settings{display:grid;gap:4px;margin-top:6px}.image-settings label{margin:6px 0}.image-settings input[type=range]{padding:0}.image-settings select{display:block;width:100%;margin-top:6px;border:1px solid #ddd;border-radius:9px;padding:10px;background:#fff;font:inherit}.lesson-image{max-width:100%;}.lesson-image-title{font-size:18px;font-weight:800;margin:0 0 8px;color:#222}.lesson-image figcaption{font-size:12px;color:#777;margin-top:6px}
.rich-toolbar,.heading-style,.image-title-style{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:8px 0}.rich-toolbar{padding:8px;background:#f7f8fb;border:1px solid #e5e7eb;border-radius:10px}.rich-toolbar label,.heading-style label,.image-title-style label{font-size:12px;color:#5f6368;display:flex;align-items:center;gap:5px}.color-pick input,.heading-style input[type=color],.image-title-style input[type=color]{width:34px;height:30px;padding:2px;border:1px solid #ddd;border-radius:6px}.rich-editor{min-height:130px;padding:14px;border:1px solid #d9dce3;border-radius:10px;background:#fff;outline:none;line-height:1.65}.rich-editor:empty:before{content:attr(data-placeholder);color:#9aa0a6}.rich-editor:focus{border-color:#7c3aed;box-shadow:0 0 0 3px rgba(124,58,237,.1)}.lesson-copy{line-height:1.7;white-space:normal}.lesson-copy p{margin:.6em 0}.lesson-copy mark{padding:.05em .2em;border-radius:3px}.lesson-heading{margin:1.2em 0 .6em}.image-title-style{padding:8px 10px;background:#f8fafc;border-radius:8px}.lesson-image-title{margin:0 0 8px;line-height:1.25}.lesson-image img{display:block;height:auto;max-width:100%;border-radius:10px}.lesson-image figcaption{margin-top:6px;color:#6b7280;font-size:13px}.content-block-admin{overflow:hidden}

/* Professional lesson note editor */
.toolbar-label{font-size:12px;font-weight:800;color:#4b5563;margin-right:2px}.rich-toolbar .small{min-width:34px}.rich-toolbar select{border:1px solid #d9dce3;border-radius:7px;background:#fff;padding:6px 8px;font:inherit}.rich-toolbar .color-pick{background:#fff;border:1px solid #e5e7eb;border-radius:7px;padding:4px 7px}.rich-editor b,.rich-editor strong{font-weight:800}.rich-editor u{text-decoration:underline}.rich-editor em,.rich-editor i{font-style:italic}


/* =========================================================
   FINAL RICH LESSON EDITOR STYLES
   ========================================================= */
.final-rich-editor{
  border:1px solid #d9dde5;
  border-radius:14px;
  background:#fff;
  overflow:hidden;
}
.rich-toolbar{
  display:flex;
  gap:6px;
  align-items:center;
  flex-wrap:wrap;
  padding:10px;
  border-bottom:1px solid #e5e7eb;
  background:#f8fafc;
}
.rich-toolbar button,
.rich-toolbar select,
.rich-color{
  min-height:34px;
  border:1px solid #d1d5db;
  border-radius:8px;
  background:#fff;
  padding:5px 9px;
  cursor:pointer;
  font-size:13px;
}
.rich-color{
  display:flex;
  align-items:center;
  gap:4px;
}
.rich-color input{
  width:26px;
  height:26px;
  padding:0;
  border:0;
  background:transparent;
}
.rich-edit-area{
  min-height:360px;
  padding:18px;
  outline:none;
  line-height:1.65;
  font-size:16px;
}
.rich-edit-area:focus{
  box-shadow:inset 0 0 0 2px rgba(59,130,246,.15);
}
.rich-image-wrap{
  position:relative;
  margin:18px 0;
  padding:8px;
}
.rich-inline-image{
  max-width:100%;
  height:auto;
  display:inline-block;
  vertical-align:middle;
  border-radius:8px;
}
.rich-image-actions{
  display:flex;
  align-items:center;
  gap:6px;
  flex-wrap:wrap;
  margin-bottom:7px;
  padding:7px;
  border:1px solid #e5e7eb;
  border-radius:9px;
  background:#f8fafc;
}
.rich-image-actions button,
.rich-image-actions label{
  font-size:12px;
  border:1px solid #d1d5db;
  border-radius:7px;
  background:#fff;
  padding:5px 8px;
}
.rich-image-actions label{
  display:flex;
  gap:5px;
  align-items:center;
}
.rich-image-actions input[type=range]{width:100px}
.rich-image-title,
.rich-image-caption{
  margin-top:7px;
  padding:4px 2px;
  outline:none;
}
.rich-image-title{
  font-size:17px;
  font-weight:700;
}
.rich-image-caption{
  font-size:13px;
  color:#667085;
}
@media(max-width:700px){
  .rich-edit-area{min-height:300px;padding:13px}
  .rich-toolbar{gap:4px;padding:7px}
  .rich-toolbar button,.rich-toolbar select,.rich-color{font-size:12px;padding:4px 6px}
}
/* v6 professional editor */
button{font:inherit}.admin-layout{align-items:start}.admin-room,.admin-course,.admin-module,.admin-lesson{border:1px solid #e5e7eb;border-radius:14px;background:#fff}.admin-room{display:flex;width:100%;justify-content:space-between;text-align:left;padding:12px;margin-bottom:8px}.admin-room span{color:#6b7280;font-size:12px}.admin-room.active{background:#f3f4f6}.admin-course{margin:14px 0;overflow:hidden}.admin-course-head,.module-head,.lesson-row{display:flex;gap:8px;align-items:center;padding:10px 12px}.admin-course-head{background:#fafafa;border-bottom:1px solid #eee}.admin-course-head .course-title,.module-title,.lesson-title{flex:1;min-width:0}.admin-course-body{padding:12px}.admin-course.collapsed .admin-course-body{display:none}.admin-module{margin:10px 0}.module-head{background:#fafafa}.module-title{font-weight:650}.module-icon{width:60px}.admin-module.collapsed .module-lessons,.admin-module.collapsed .add-lesson{display:none}.admin-lesson{margin:8px 0;background:#fcfcfd}.lesson-row{background:#fff}.lesson-row .lesson-title{border:0;background:transparent;font-weight:550}.drag{color:#9ca3af}.lesson-editor{border-top:1px solid #eee;background:#fff}.editor-sticky{position:sticky;top:0;z-index:5;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);padding:12px;border-bottom:1px solid #eee}.editor-actions{display:flex;justify-content:flex-end;gap:8px;margin-bottom:10px}.big-lesson-title{font-size:22px;font-weight:700;border:0;outline:0;width:100%;padding:6px 0}.editor-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(280px,.7fr);gap:16px;padding:14px}.rich-toolbar{display:flex;flex-wrap:wrap;gap:5px;padding:8px;border:1px solid #ddd;border-bottom:0;border-radius:10px 10px 0 0;background:#f8fafc;position:sticky;top:70px;z-index:4}.rich-toolbar button,.rich-toolbar label{border:1px solid #e5e7eb;background:white;border-radius:7px;padding:5px 8px;cursor:pointer;font-size:13px}.rich-toolbar input[type=color]{width:20px;height:20px;border:0;padding:0;vertical-align:middle}.rich-toolbar select{border:1px solid #e5e7eb;border-radius:7px;background:white;padding:5px}.rich-editor{min-height:420px;border:1px solid #ddd;border-radius:0 0 10px 10px;padding:18px;font-size:16px;line-height:1.7;outline:none;background:white}.rich-editor:focus{border-color:#aab4c3;box-shadow:0 0 0 2px rgba(59,130,246,.08)}.rich-editor img{max-width:100%;height:auto;border-radius:8px;display:block;margin:10px 0}.rich-editor p{margin:0 0 10px}.lesson-settings{display:flex;flex-direction:column;gap:14px}.lesson-settings textarea{min-height:100px;width:100%;resize:vertical}.video-preview{border:1px solid #eee;border-radius:10px;overflow:hidden;background:#111;min-height:40px}.video-preview iframe,.video-preview video{display:block;width:100%;aspect-ratio:16/9;border:0}.resources-editor{border:1px solid #eee;border-radius:10px;padding:10px}.setting-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.resource-row{display:grid;grid-template-columns:1fr 1.5fr auto;gap:6px;margin:7px 0}.resource-row input{min-width:0}.course-image{margin:10px 0}.course-image img{max-width:180px;border-radius:10px}.picker-card{display:flex;flex-direction:column;text-align:left;padding:15px;border:1px solid #eee;background:#fff;border-radius:12px;margin:8px 0;width:100%}.picker-card span{font-size:12px;color:#6b7280;margin-top:4px}.complete-btn{margin-top:25px}.student-note img{max-width:100%;height:auto}.student-note a{color:#2563eb}.student-note iframe{max-width:100%;width:100%;aspect-ratio:16/9;border:0}.student-note video{width:100%;max-width:100%}.resources a{display:block;margin:7px 0}.hidden{display:none!important}@media(max-width:900px){.editor-grid{grid-template-columns:1fr}.lesson-settings{order:-1}.resource-row{grid-template-columns:1fr}.rich-toolbar{top:0}.admin-course-head,.module-head{flex-wrap:wrap}.module-title{min-width:160px}}
/* Bulk video importer */
.bulk-modal{width:min(1100px,96vw);max-height:92vh;overflow:auto}
.bulk-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:18px;margin-top:18px}
.bulk-input{width:100%;min-height:230px;resize:vertical;font:14px/1.55 ui-monospace,SFMono-Regular,Menlo,monospace;padding:14px;border:1px solid #d9dee8;border-radius:12px;background:#fbfcfe}
.bulk-hints{display:flex;gap:12px;flex-wrap:wrap;margin-top:9px;color:#667085;font-size:12px}
.bulk-help{border:1px solid #e6e9ef;border-radius:14px;padding:16px;background:#fafbfc;color:#475467;font-size:13px;line-height:1.6}
.bulk-help ol{padding-left:18px;margin:10px 0 0}
.bulk-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:16px;padding-top:14px;border-top:1px solid #edf0f4}
.bulk-summary{margin-top:14px;padding:10px 12px;border-radius:10px;background:#f4f7fb;color:#344054;font-size:13px}
.bulk-group{margin-top:14px;border:1px solid #e7eaf0;border-radius:14px;overflow:hidden}
.bulk-group-head{display:flex;align-items:center;justify-content:space-between;padding:11px 14px;background:#fafbfc;border-bottom:1px solid #e7eaf0}
.bulk-group-head h3{margin:0;font-size:13px}
.bulk-group-head span{font-size:12px;color:#667085}
.bulk-row{display:flex;gap:11px;padding:12px 14px;border-bottom:1px solid #edf0f4;align-items:flex-start}
.bulk-row:last-child{border-bottom:0}
.bulk-check{padding-top:2px}.bulk-check input{width:16px;height:16px}
.bulk-row-main{min-width:0;flex:1}.bulk-title{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.bulk-title b{font-size:13px}.bulk-path,.bulk-url,.bulk-alts{font-size:11px;color:#667085;margin-top:3px;overflow-wrap:anywhere}.bulk-url{color:#344054}.bulk-alts{color:#9a6700}
.match-badge{font-size:10px;font-weight:700;padding:3px 7px;border-radius:999px;background:#eef2f6;color:#475467}.match-badge.exact,.match-badge.high{background:#eaf7ee;color:#16743a}.match-badge.review{background:#fff6dd;color:#8a5a00}.match-badge.missing{background:#fdecec;color:#b42318}
@media(max-width:800px){.bulk-grid{grid-template-columns:1fr}.bulk-modal{padding:18px}.bulk-actions{justify-content:stretch}.bulk-actions button{flex:1}}
/* Admin V8: editor modeled on the supplied reference screenshots. Student styles are untouched. */
.admin-v8{max-width:none!important;padding:0!important}
.admin-v8-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;padding:18px 24px;border-bottom:1px solid #e7e7e7;background:#fff}
.admin-v8-head h1{margin:2px 0 4px;font-size:28px}.admin-v8-head p{margin:0}.admin-v8-actions{display:flex;gap:8px;flex-wrap:wrap}
.admin-v8-shell{display:grid;grid-template-columns:300px minmax(0,1fr);min-height:calc(100vh - 150px);background:#f7f7f5}
.admin-v8-sidebar{background:#fff;border-right:1px solid #e5e5e5;display:flex;flex-direction:column;min-width:0}
.admin-v8-sidebar-top{padding:14px;border-bottom:1px solid #eee;display:flex;gap:8px;align-items:end}.admin-v8-sidebar-top>div{min-width:0;flex:1}.tiny-label{font-size:10px;font-weight:800;letter-spacing:.1em;color:#888;margin-bottom:5px}.admin-v8-sidebar-top select{width:100%;padding:9px;border:1px solid #ddd;border-radius:8px;background:#fff;font-weight:700}.icon-btn{border:1px solid #ddd;background:#fff;border-radius:8px;height:36px;width:38px;font-size:20px}
.admin-v8-tree{padding:10px 8px;overflow:auto;flex:1}.tree-course,.tree-module{margin-bottom:3px}.tree-course-row,.tree-module-row{display:grid;grid-template-columns:26px 20px minmax(0,1fr) 30px;align-items:center;min-height:38px;border-radius:7px}.tree-course-row{grid-template-columns:26px minmax(0,1fr) 30px}.tree-course-row:hover,.tree-module-row:hover{background:#f4f4f2}.tree-course-name,.tree-module-name,.tree-lesson{border:0;background:none;text-align:left;cursor:pointer;font:inherit;min-width:0}.tree-course-name{font-weight:800}.tree-module-name{font-weight:650}.tree-chevron,.tree-more{border:0;background:transparent;color:#777;cursor:pointer}.tree-more{font-size:11px}.tree-lessons{padding-left:26px}.tree-lesson{display:flex;gap:7px;align-items:center;width:100%;padding:7px 8px;border-radius:7px;color:#555;font-size:13px}.tree-lesson:hover{background:#f3f3f1}.tree-lesson.active{background:#ffe9a8;color:#161616;font-weight:750}.lesson-dot{width:12px;font-size:8px}.tree-add-child{border:0;background:none;color:#777;padding:7px 8px;cursor:pointer;font-size:12px}.admin-v8-sidebar-bottom{padding:10px;border-top:1px solid #eee}.tree-add{width:100%;border:1px dashed #ccc;background:#fff;border-radius:8px;padding:9px;text-align:left;cursor:pointer}
.admin-v8-main{padding:26px;overflow:auto}.admin-v8-empty{min-height:60vh;display:grid;place-content:center;text-align:center;color:#777}.empty-icon{margin:auto;width:50px;height:50px;border-radius:50%;background:#eee;display:grid;place-content:center;font-size:22px}.admin-v8-editor{max-width:1000px;margin:0 auto}.editor-topline{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.editor-breadcrumb{font-size:12px;color:#888}.editor-top-actions{display:flex;gap:8px;align-items:center}.save-status{font-size:12px;color:#777}.v8-title{width:100%;font-size:30px;font-weight:750;border:0;background:transparent;outline:none;padding:6px 0 14px}.v8-editor-card{background:#fff;border:1px solid #ddd;border-radius:10px;box-shadow:0 1px 2px rgba(0,0,0,.04);overflow:visible}.v8-toolbar{display:flex;align-items:center;gap:3px;flex-wrap:wrap;padding:8px 10px;border-bottom:1px solid #eee}.v8-toolbar button{border:0;background:transparent;border-radius:5px;min-width:30px;height:30px;cursor:pointer;color:#555}.v8-toolbar button:hover{background:#f0f0ee}.toolbar-sep{width:1px;height:20px;background:#ddd;margin:0 4px}.v8-note-editor{min-height:390px;padding:22px 24px;outline:none;line-height:1.65;font-size:16px}.v8-note-editor img{display:block;max-width:100%;height:auto;margin:14px 0;border-radius:6px}.v8-footer{display:flex;align-items:center;gap:16px;padding:12px 14px;border-top:1px solid #eee}.v8-add-wrap{position:relative}.add-menu-btn{border:1px solid #ddd;background:#fff;border-radius:6px;padding:8px 12px;font-weight:700}.add-menu{position:absolute;bottom:42px;left:0;background:#fff;border:1px solid #ddd;border-radius:8px;box-shadow:0 8px 25px rgba(0,0,0,.12);padding:6px;min-width:190px;z-index:20}.add-menu button{display:block;width:100%;border:0;background:#fff;text-align:left;padding:10px;border-radius:5px;cursor:pointer}.add-menu button:hover{background:#f3f3f1}.publish-control{display:flex;align-items:center;gap:8px;margin-left:auto;font-size:13px;color:#258a6a;font-weight:700}.toggle{width:42px;height:24px;border:0;border-radius:20px;background:#bbb;padding:3px;cursor:pointer}.toggle i{display:block;width:18px;height:18px;border-radius:50%;background:#fff;transition:transform .15s}.toggle.on{background:#64c49b}.toggle.on i{transform:translateX(18px)}.cancel-btn,.save-btn{border:0;background:transparent;padding:9px 14px;font-weight:750;cursor:pointer}.save-btn{background:#f6d15a;border-radius:5px}.v8-video-card,.v8-resources{margin-top:14px;background:#fff;border:1px solid #ddd;border-radius:10px;padding:14px}.video-card-head{display:flex;justify-content:space-between;gap:10px;align-items:start}.video-card-head span{display:block;color:#888;font-size:12px;word-break:break-all;margin-top:3px}.video-frame{margin-top:12px}.video-frame iframe{width:100%;min-height:420px;border:0;border-radius:8px}.resources-title{font-weight:800;margin-bottom:10px}.v8-resource{display:grid;grid-template-columns:180px 1fr auto;gap:8px;margin-bottom:8px}.v8-resource input{padding:9px;border:1px solid #ddd;border-radius:6px}.v8-modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.55);display:grid;place-items:center;z-index:1000}.v8-modal{width:min(430px,calc(100vw - 32px));background:#fff;border-radius:10px;padding:26px;box-shadow:0 20px 60px rgba(0,0,0,.25)}.v8-modal h2{margin:0 0 7px}.v8-modal p{color:#777;font-size:14px}.v8-modal input{width:100%;box-sizing:border-box;padding:13px;border:1px solid #999;border-radius:5px;margin:10px 0 18px}.v8-modal-actions{display:flex;justify-content:flex-end;gap:8px}.hidden{display:none!important}
@media(max-width:800px){.admin-v8-head{align-items:flex-start;flex-direction:column}.admin-v8-shell{grid-template-columns:1fr}.admin-v8-sidebar{max-height:42vh;border-right:0;border-bottom:1px solid #ddd}.admin-v8-main{padding:14px}.v8-note-editor{min-height:300px}.v8-footer{flex-wrap:wrap}.publish-control{margin-left:0}.v8-resource{grid-template-columns:1fr}.admin-v8-actions{width:100%}}

/* ===== Student experience v9: screenshot-matched classroom UI ===== */
:root{--sk-border:#e7e8ec;--sk-muted:#7a7d85;--sk-text:#25272b;--sk-soft:#f6f7f9;--sk-highlight:#f7e2c9;--sk-green:#65c7a5}
body{background:#fff;color:var(--sk-text)}
.topbar{height:96px;padding:0;background:#fff;position:sticky;top:0;border-bottom:1px solid var(--sk-border);box-shadow:0 1px 0 rgba(0,0,0,.02)}
.topbar-inner{width:100%;max-width:1280px;margin:0 auto;display:grid;grid-template-columns:auto auto minmax(220px,1fr) auto auto;grid-template-rows:52px 44px;align-items:center;padding:0 20px;gap:0 18px}
.brand{font-size:15px;color:#202124;padding:0}.brand-mark{width:27px;height:27px;border-radius:7px;background:#111;font-size:10px}.class-switch{font-size:13px;color:#303236;padding:8px 4px;display:flex;align-items:center;gap:8px}.class-dot{width:20px;height:20px;border-radius:6px;background:linear-gradient(135deg,#5b63d8,#f39a65);display:inline-block}.class-switch .chevron{color:#85878c;margin-left:2px}.search-wrap{height:36px;max-width:430px;border:1px solid #e5e6ea;background:#f5f6f8;border-radius:9px;color:#8b8d92}.search-wrap input{font-size:13px}.top-nav{grid-column:1 / -1;display:flex;align-items:center;gap:26px;height:44px}.top-nav button{height:44px;border:0;background:transparent;color:#70737a;font-size:12px;font-weight:600;padding:0;cursor:pointer;position:relative}.top-nav button.active{color:#24262a}.top-nav button.active:after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:#24262a;border-radius:2px}.admin-btn{justify-self:end;grid-column:5;grid-row:1;border:0;background:#f3f3f5;color:#555;border-radius:8px;padding:7px 9px;font-size:11px}
#homeView{max-width:1280px;padding:30px 32px;margin:auto}.classroom-head{margin:0 0 24px}.classroom-head .eyebrow{display:none}.classroom-head h1{font-size:20px;font-weight:750;margin:0 0 5px}.classroom-head p{font-size:13px;margin:0;color:#81838a}
.course-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:28px 20px}.course-card{padding:0;text-align:left;background:transparent;border:0;border-radius:8px;box-shadow:none;overflow:visible}.course-card:hover .course-image{transform:translateY(-1px);box-shadow:0 7px 20px rgba(20,20,30,.08)}.course-image{height:178px;border-radius:7px;background:#252633;overflow:hidden;transition:.15s}.course-image img{display:block;width:100%;height:100%;object-fit:cover}.course-body,.course-card-body{padding:10px 1px 0}.course-card-body h3{font-size:14px;line-height:1.3;margin:0;font-weight:750;color:#303238}.course-card-body p{font-size:11px;line-height:1.4;min-height:30px;margin:4px 0 9px;color:#85878c}.course-progress-line{display:flex;align-items:center;gap:8px}.course-progress-line>span{font-size:10px;color:#777;min-width:22px}.course-progress-line .progress{height:5px;flex:1;background:#edf0f5}.course-progress-line .progress i{background:#b8cbe9}.course-meta{display:none}.placeholder{height:100%;display:grid;place-items:center;color:#aaa;font-size:13px}
.course-view{max-width:1280px;margin:auto;padding:0 32px 50px}.course-page-head{height:42px;display:flex;align-items:center}.course-page-head .back{font-size:12px;color:#7a7d84;margin:0;padding:4px 0}.course-layout{grid-template-columns:250px minmax(0,1fr);gap:34px;align-items:start}.lesson-sidebar{border:0;border-radius:0;padding:5px 0 30px;position:sticky;top:105px;max-height:calc(100vh - 115px);background:#fff;box-shadow:none}.course-sidebar-title{font-size:14px;font-weight:750;margin:0 0 10px;color:#2e3035}.sidebar-progress{margin-bottom:15px}.sidebar-progress .progress{height:5px;background:#e7eaf0}.sidebar-progress .progress i{background:#8eb6e8}.progress-row{font-size:10px;color:#777;justify-content:flex-start;margin:0 0 5px}.nav-module{margin:1px 0}.nav-module-head{width:100%;display:flex;align-items:center;justify-content:space-between;gap:8px;border:0;background:#fff;color:#393b40;font-size:12px;font-weight:700;padding:9px 4px;border-radius:7px;cursor:pointer;text-align:left}.nav-module-head:hover{background:#f8f8f9}.nav-module-head .module-arrow{color:#92949a;font-size:12px}.nav-lessons{padding:1px 0 4px}.nav-module.collapsed .nav-lessons{display:none}.nav-lesson{width:100%;display:flex;align-items:flex-start;gap:8px;border:0;background:#fff;color:#676a71;font-size:11px;line-height:1.35;padding:7px 7px 7px 14px;border-radius:7px;text-align:left;cursor:pointer}.nav-lesson:hover{background:#f7f7f8}.nav-lesson.active{background:var(--sk-highlight);color:#393735;font-weight:700}.nav-lesson .check{width:13px;height:13px;flex:0 0 13px;border-radius:50%;border:1px solid #cfd2d7;color:#fff;background:#fff;font-size:8px;display:grid;place-items:center;margin-top:1px}.nav-lesson:not(.active) .check{color:#65b99e}.nav-lesson.active .check{border-color:#e3b97f}.nav-lesson-title{min-width:0}
.lesson-panel{border:0;border-radius:0;padding:0 0 60px;background:#fff;min-height:620px;max-width:760px;margin:0 auto;width:100%}.lesson-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:3px 0 16px}.lesson-top h1{font-size:20px;line-height:1.25;margin:0;font-weight:750;color:#292b30}.lesson-complete-icon{width:25px;height:25px;border:1px solid #dfe1e5;background:#fff;border-radius:50%;font-size:12px;color:#4a4d52;cursor:pointer}.video-frame{position:relative;width:100%;aspect-ratio:16/9;background:#15171d;border-radius:7px;overflow:hidden;margin:0 0 18px}.video-frame iframe,.video-frame video{position:absolute;inset:0;width:100%;height:100%;border:0;object-fit:contain}.student-note{font-size:12px;line-height:1.7;color:#4e5158}.student-note img{max-width:100%;height:auto;border-radius:6px}.student-note h1,.student-note h2,.student-note h3{color:#282a2f}.student-note a{color:#456fc0}.resources{margin-top:25px;padding-top:16px;border-top:1px solid #eee}.resources h3{font-size:12px;margin:0 0 10px}.resource-list{display:flex;flex-wrap:wrap;gap:6px}.resource{font-size:11px!important;padding:7px 9px!important;border-radius:6px!important;margin:0!important;background:#f4f5f7!important;color:#3e4147!important;text-decoration:none}.complete-btn{display:none}.lesson-placeholder{padding:35px}
@media(max-width:900px){.topbar-inner{grid-template-columns:auto auto 1fr auto;grid-template-rows:52px 44px}.top-nav{gap:16px;overflow:auto}.admin-btn{grid-column:4}.course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.course-layout{grid-template-columns:230px minmax(0,1fr);gap:24px}#homeView,.course-view{padding-left:20px;padding-right:20px}}
@media(max-width:650px){.topbar{height:88px}.topbar-inner{grid-template-columns:auto 1fr auto;grid-template-rows:48px 40px;padding:0 12px;gap:0 10px}.brand span:last-child{display:none}.class-switch{font-size:12px}.search-wrap{max-width:none;height:34px}.class-switch{order:2}.search-wrap{order:3}.top-nav{grid-column:1 / -1;grid-row:2;gap:18px;overflow-x:auto;white-space:nowrap}.top-nav button{font-size:11px}.admin-btn{grid-column:3;grid-row:1;padding:6px 7px}#homeView{padding:22px 13px}.course-grid{grid-template-columns:1fr;gap:24px}.course-image{height:auto;aspect-ratio:16/8.2}.course-view{padding:0 13px 35px}.course-page-head{height:40px}.course-layout{grid-template-columns:1fr;gap:14px}.lesson-sidebar{position:relative;top:auto;max-height:none;padding-bottom:4px}.lesson-sidebar #sidebarModules{max-height:360px;overflow:auto;border-top:1px solid #f0f0f0}.lesson-panel{max-width:none;padding-top:6px}.lesson-top h1{font-size:18px}.video-frame{border-radius:6px}.nav-lesson{font-size:12px}}

/* =========================================================
   V10 STUDENT UI - Skool-inspired, based on public UI references
   Admin styles above are intentionally left intact.
   ========================================================= */
:root{--sk-bg:#f7f7f5;--sk-card:#fff;--sk-line:#e5e5e5;--sk-text:#222;--sk-muted:#777;--sk-green:#08a66a;--sk-active:#f8dfa8}
body{background:var(--sk-bg);color:var(--sk-text);font-family:-apple-system,BlinkMacSystemFont,"Inter","Segoe UI",Arial,sans-serif}
.topbar{height:106px;background:#fff;border-bottom:1px solid #ddd;padding:0;display:block;position:sticky;top:0;z-index:50}
.topbar-inner{max-width:1160px;height:100%;margin:0 auto;display:grid;grid-template-columns:auto minmax(240px,1fr) auto;grid-template-rows:58px 48px;column-gap:18px;align-items:center;padding:0 18px}
.brand{grid-column:1;grid-row:1;min-width:190px;justify-content:flex-start;color:#202020;font-size:14px}
.brand-mark{width:34px;height:34px;border-radius:9px;background:#f0f0f0;color:#555;font-size:13px}
.class-switch{grid-column:1;grid-row:1;margin-left:190px;display:none}
.search-wrap{grid-column:2;grid-row:1;justify-self:stretch;max-width:none;height:38px;border-radius:8px;background:#f1f1f1;border:1px solid #ececec}
.top-nav{grid-column:1 / 4;grid-row:2;display:flex;align-items:end;gap:26px;height:48px;overflow:auto;white-space:nowrap}
.top-nav button{height:48px;border:0;background:transparent;color:#666;font-weight:600;font-size:13px;padding:0 1px;cursor:pointer;border-bottom:3px solid transparent}
.top-nav button.active{color:#222;border-bottom-color:#222}
.admin-btn{grid-column:3;grid-row:1;border:0;background:#fff;color:#666;padding:8px 10px;border-radius:8px;font-size:12px}
.view{max-width:1160px;padding:30px 18px 60px}
.classroom-head{margin:0 0 22px}
.classroom-head .eyebrow{display:none}
.classroom-head h1{font-size:24px;line-height:1.2;margin:0 0 5px;font-weight:800}
.classroom-head p{font-size:14px;margin:0;color:#777}
.course-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:22px 20px}
.course-card{display:block;text-align:left;width:100%;border:1px solid #dedede;border-radius:7px;background:#fff;overflow:hidden;box-shadow:none;padding:0;transition:transform .12s ease,box-shadow .12s ease}
.course-card:hover{transform:translateY(-1px);box-shadow:0 3px 12px rgba(0,0,0,.07)}
.course-image{height:auto;aspect-ratio:1.62;background:#262626;border-radius:0;overflow:hidden}
.course-image img{object-fit:cover}
.course-card-body{padding:13px 14px 14px}
.course-card-title-row h3{font-size:16px;line-height:1.25;margin:0 0 5px;font-weight:750;color:#222}
.course-card-body p{font-size:12px;line-height:1.45;min-height:0;margin:0 0 12px;color:#777}
.course-progress-line{display:grid;grid-template-columns:32px 1fr;align-items:center;gap:8px}
.course-progress-line>span{font-size:11px;color:#777}
.course-progress-line .progress{height:7px;background:#e6e6e6}
.course-progress-line .progress i{background:var(--sk-green)}

.course-view{max-width:1160px;margin:0 auto;padding:24px 18px 60px}
.course-page-head{height:28px}
.course-page-head .back{font-size:12px;margin:0;color:#777}
.course-layout{grid-template-columns:260px minmax(0,1fr);gap:30px;align-items:start}
.lesson-sidebar{background:transparent;border:0;border-radius:0;padding:0;position:sticky;top:125px;max-height:calc(100vh - 145px);overflow:auto}
.course-sidebar-title{font-size:18px;font-weight:800;margin:0 0 12px}
.sidebar-progress{margin-bottom:18px;padding-right:10px}
.sidebar-progress .progress-row{justify-content:flex-start;margin:0 0 5px;color:#555;font-size:12px}
.sidebar-progress .progress{height:7px;background:#ddd}
.sidebar-progress .progress i{background:var(--sk-green)}
.nav-module{margin:0 0 13px}
.nav-module-head{width:100%;display:flex;align-items:center;justify-content:space-between;border:0;background:transparent;padding:4px 4px 6px 2px;color:#333;font-weight:750;font-size:13px;text-align:left;cursor:pointer}
.nav-module-head span:first-child{overflow:hidden;text-overflow:ellipsis}
.module-arrow{font-size:15px;color:#888;flex:0 0 auto}
.nav-lessons{display:grid;gap:1px}
.nav-module.collapsed .nav-lessons{display:none}
.nav-lesson{width:100%;border:0;background:transparent;display:grid;grid-template-columns:20px 1fr;align-items:center;gap:5px;padding:8px 9px;border-radius:6px;text-align:left;color:#555;font-size:12px;line-height:1.35;cursor:pointer}
.nav-lesson:hover{background:#f0f0f0}
.nav-lesson.active{background:var(--sk-active);color:#222;font-weight:650}
.nav-lesson .check{font-size:15px;line-height:1;color:var(--sk-green);text-align:center}
.lesson-panel{background:#fff;border:1px solid #dedede;border-radius:7px;padding:24px 26px 30px;min-height:540px;box-shadow:none}
.lesson-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 16px}
.lesson-top h1{font-size:22px;line-height:1.25;margin:0;font-weight:800;color:#222}
.lesson-complete-icon{width:27px;height:27px;border:0;background:transparent;color:var(--sk-green);font-size:24px;cursor:pointer;line-height:1}
.video-frame{position:relative;aspect-ratio:16/9;background:#111;border-radius:6px;overflow:hidden;margin:0 0 22px}
.video-frame iframe,.video-frame video{position:absolute;inset:0;width:100%;height:100%;border:0;display:block}
.student-note{font-size:15px;line-height:1.7;color:#303030}
.student-note p{margin:0 0 13px}
.student-note h1,.student-note h2,.student-note h3{color:#202020;margin:25px 0 10px}
.student-note img{max-width:100%;height:auto;display:block;margin:18px auto;border-radius:6px}
.resources{margin-top:28px;padding-top:18px;border-top:1px solid #eee}
.resources h3{font-size:13px;margin:0 0 10px;font-weight:800}
.resources .resource-list{display:flex;flex-wrap:wrap;gap:8px}
.resources .resource{margin:0;background:#f4f4f4;border:1px solid #e6e6e6;border-radius:6px;padding:8px 10px;font-size:12px;color:#333}

/* classroom switch popup */
.classroom-cards{grid-template-columns:1fr 1fr}
.classroom-card{background:#fff;border:1px solid #ddd;border-radius:8px;padding:16px}

@media(max-width:900px){
  .course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .topbar-inner{grid-template-columns:auto minmax(120px,1fr) auto}
  .top-nav{gap:18px}
  .course-layout{grid-template-columns:230px minmax(0,1fr);gap:22px}
}
@media(max-width:700px){
  .topbar{height:92px}
  .topbar-inner{grid-template-columns:1fr auto;grid-template-rows:48px 44px;padding:0 12px;column-gap:8px}
  .brand{grid-column:1;grid-row:1;min-width:0}
  .brand span:last-child{display:block;max-width:150px;overflow:hidden;text-overflow:ellipsis}
  .search-wrap{grid-column:1;grid-row:2;height:34px}
  .admin-btn{grid-column:2;grid-row:1}
  .top-nav{grid-column:2;grid-row:2;gap:14px;height:44px;overflow-x:auto;justify-self:end;max-width:100%}
  .top-nav button{height:44px;font-size:11px}
  .course-grid{grid-template-columns:1fr}
  .view{padding:22px 12px 45px}
  .course-view{padding:18px 12px 45px}
  .course-layout{grid-template-columns:1fr;gap:16px}
  .lesson-sidebar{position:static;max-height:none;padding-bottom:4px}
  .nav-lessons{max-height:300px;overflow:auto}
  .lesson-panel{padding:18px 16px 24px}
  .lesson-top h1{font-size:19px}
  .classroom-cards{grid-template-columns:1fr}
}