/*! tailwindcss v4.3.5 | MIT License | https://tailwindcss.com */
@layer theme{:root,:host{--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring:where(:not(iframe)){outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}*{border-color:var(--border)}body{background:var(--background);min-width:320px;min-height:100vh;color:var(--foreground);margin:0}button,input,select,textarea{font:inherit}}@layer components;@layer utilities{.sr-only{clip-path:inset(50%);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.grid{display:grid}.hidden{display:none}}:root{--background:#f8f9fc;--foreground:#1b253c;--card:#fff;--muted:#eceff3;--muted-foreground:#677283;--border:#dadfe7;--primary:#3264e2;--primary-foreground:#fff;--navy:#172340;--success:#22a063;--danger:#d72d2d;color:var(--foreground);background:var(--background);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;font-family:Inter,ui-sans-serif,system-ui,sans-serif}#root{min-height:100vh}.app-shell{min-height:100vh;display:flex}.sidebar{background:var(--navy);color:#fff;z-index:30;flex-direction:column;width:248px;padding:24px 16px;display:flex;position:fixed;inset:0 auto 0 0}.brand{color:#fff;align-items:center;gap:12px;margin:0 8px 48px;font-size:13px;line-height:1.3;text-decoration:none;display:flex}.brand b{font-size:15px}.brand-icon{color:#fff;background:#2f5fe3;border-radius:12px;flex:none;place-items:center;width:40px;height:40px;display:grid}.side-caption{letter-spacing:.13em;color:#9baac4;margin-bottom:12px;padding:0 12px;font-size:10px;font-weight:700}.sidebar nav{gap:6px;display:grid}.sidebar nav a{color:#c1cadd;border-radius:10px;align-items:center;gap:13px;height:44px;padding:0 13px;font-size:13px;font-weight:600;text-decoration:none;display:flex}.sidebar nav a:hover,.sidebar nav a.active{color:#fff;background:#2f5fe3}.sidebar-bottom{border-top:1px solid #35415a;align-items:center;gap:10px;margin-top:auto;padding:18px 4px 0;display:flex}.avatar{color:#2f5fe3;background:#dbe7ff;border-radius:50%;flex:none;place-items:center;width:34px;height:34px;font-size:13px;font-weight:800;display:grid}.avatar.small{width:28px;height:28px}.user-label{flex:1;gap:2px;min-width:0;font-size:12px;display:grid}.user-label b{white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.user-label small{color:#9baac4}.sidebar-bottom button{color:#c1cadd;background:0 0;border:0;padding:7px}.main-area{width:calc(100% - 248px);min-width:0;margin-left:248px}.topbar{border-bottom:1px solid var(--border);z-index:20;background:#fff;justify-content:space-between;align-items:center;height:64px;padding:0 34px;display:flex;position:sticky;top:0}.crumb{color:#6b7890;font-size:12px}.crumb span{color:#c3ccda;padding:0 8px}.top-user{color:#56647b;align-items:center;gap:9px;font-size:12px;display:flex}.online-dot{background:#18a66a;border-radius:50%;width:8px;height:8px}.page-content{max-width:1500px;margin:auto;padding:34px}.page-heading{justify-content:space-between;align-items:center;gap:20px;margin-bottom:26px;display:flex}.page-heading h1{letter-spacing:-.03em;color:#16213f;margin:5px 0 7px;font-size:30px;font-weight:750;line-height:1.2}.page-heading p.muted{font-size:13px}.eyebrow{letter-spacing:.13em;color:#567dc7;margin:0;font-size:10px;font-weight:800}.muted{color:#77849a}.btn{cursor:pointer;border:1px solid #0000;border-radius:9px;justify-content:center;align-items:center;gap:8px;padding:10px 15px;font-size:12px;font-weight:650;transition:all .15s;display:inline-flex}.btn.primary{color:#fff;background:#2f5fe3}.btn.primary:hover{background:#234dc5}.btn.ghost{color:#35445c;background:#fff;border-color:#dce3ed}.btn.ghost:hover{background:#f3f6fb}.btn.danger{color:#c43e42;background:#fff1f0;border-color:#f1c5c4}.btn.disabled{opacity:.6;cursor:wait}.auth-wrap{background:radial-gradient(at 20% 10%,#e3edff,#0000 45%),#f5f7fb;place-items:center;min-height:100vh;padding:24px;display:grid}.auth-card{background:#fff;border:1px solid #e6eaf0;border-radius:20px;gap:16px;width:min(100%,440px);padding:36px;display:grid;box-shadow:0 22px 65px #17213f12}.auth-card .brand-icon{margin-bottom:4px}.auth-card .eyebrow{margin-top:4px}.auth-card h1{letter-spacing:-.03em;color:#16213f;margin:0;font-size:25px}.auth-card>p{font-size:13px;line-height:1.6}.auth-card .btn{width:100%;padding:12px}.text-button{color:#2f5fe3;cursor:pointer;background:0 0;border:0;font-size:12px}.field{gap:7px;min-width:0;display:grid}.field>span{color:#43516a;font-size:11px;font-weight:700}.field input,.field select,.field textarea,.toolbar select,.search input,.section-add input,.add-lesson input,.lesson-edit-row input,.lesson-edit-row textarea,.material-add input{color:#273550;background:#fff;border:1px solid #dce3ed;border-radius:8px;outline:none;width:100%;min-width:0;padding:10px 11px;font-size:12px}.field input:focus,.field select:focus,.field textarea:focus,.search:focus-within,.lesson-edit-row input:focus{border-color:#6d91ed;box-shadow:0 0 0 3px #2f5fe318}.error-text{color:#ba3f42;margin:10px 0;font-size:12px}.stat-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:15px;margin-bottom:22px;display:grid}.stat-card,.panel,.report-card{background:#fff;border:1px solid #e4e9f0;border-radius:13px;box-shadow:0 3px 14px #16213f05}.stat-card{padding:19px}.stat-top{color:#718096;justify-content:space-between;align-items:center;font-size:12px;display:flex}.stat-top svg{color:#4c70ca}.stat-card>b{letter-spacing:-.04em;color:#172543;margin:15px 0 2px;font-size:28px;display:block}.stat-card>small{color:#929db0;font-size:10px}.panel{margin-bottom:18px;padding:22px}.panel h2{color:#1c2a46;margin:0 0 16px;font-size:15px}.panel-title{justify-content:space-between;align-items:center;margin-bottom:14px;display:flex}.panel-title h2{margin:0}.activity-list{display:grid}.activity-row{color:#68768b;border-top:1px solid #eef1f5;align-items:center;gap:10px;padding:13px 2px;font-size:11px;display:flex}.activity-row time{color:#99a3b2;white-space:nowrap;margin-left:auto;font-size:10px}.activity-row b{color:#34435d}.activity-dot{background:#4e77e5;border-radius:50%;flex:none;width:8px;height:8px}.tag{color:#3864ce;background:#eef3ff;border-radius:20px;padding:5px 9px;font-size:10px;font-weight:700}.toolbar{color:#718096;align-items:center;gap:10px;margin:0 0 14px;font-size:11px;display:flex}.toolbar>span{margin-left:auto}.search{color:#8591a4;background:#fff;border:1px solid #dce3ed;border-radius:9px;align-items:center;gap:8px;width:min(100%,400px);height:38px;padding:0 10px;display:flex}.search input{border:0;padding:0;box-shadow:none!important}.toolbar select{width:auto;min-width:145px}.table-wrap{padding:0;overflow:auto}.table-wrap table{border-collapse:collapse;text-align:left;white-space:nowrap;width:100%;font-size:12px}.table-wrap th{color:#7b879a;text-transform:uppercase;letter-spacing:.06em;background:#f8f9fc;font-size:10px}.table-wrap th,.table-wrap td{border-bottom:1px solid #edf0f4;padding:14px 16px}.table-wrap tbody tr:last-child td{border-bottom:0}.table-wrap td{color:#526078}.table-wrap td b{color:#26344e}.subline{color:#8a95a7;margin-top:4px;font-size:10px;display:block}.status{border-radius:18px;padding:5px 9px;font-size:10px;font-weight:700}.status.published{color:#20864f;background:#e8f7ef}.status.draft{color:#a97511;background:#fff5df}.table-link,.back-link{color:#315ed0;font-size:11px;font-weight:700;text-decoration:none}.table-link:hover,.back-link:hover{text-decoration:underline}.empty-state,.loading{text-align:center;color:#8a95a6;padding:26px 12px;font-size:12px}.form-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.full{grid-column:1/-1}.form-actions{justify-content:flex-end;display:flex}.icon-btn{color:#718096;cursor:pointer;background:0 0;border:0;border-radius:7px;place-items:center;width:30px;height:30px;display:inline-grid}.icon-btn:hover{color:#2c3c59;background:#f0f3f8}.danger-text{color:#bd4549}.editor-grid{grid-template-columns:minmax(250px,.72fr) minmax(400px,1.5fr);align-items:start;gap:18px;display:grid}.stack-form{gap:13px;display:grid}.stack-form .btn{justify-self:start}.cover-edit{border-top:1px solid #edf0f4;margin-top:20px;padding-top:18px}.cover-edit h3{margin:0 0 12px;font-size:12px}.cover-edit img{object-fit:cover;border-radius:8px;width:100%;height:130px;margin-bottom:10px}.cover-edit form{gap:10px;display:grid}.section-add{gap:8px;margin-bottom:16px;display:flex}.section-add .btn{white-space:nowrap}.section-card{border:1px solid #e5eaf1;border-radius:10px;margin:12px 0;overflow:hidden}.section-head{background:#f8f9fc;justify-content:space-between;align-items:center;padding:10px 12px;font-size:12px;display:flex}.lesson-card{border-top:1px solid #edf0f4;padding:12px 12px 10px}.lesson-row{justify-content:space-between;align-items:center;gap:10px;font-size:11px;display:flex}.lesson-actions{align-items:center;display:flex}.upload-label{cursor:pointer;place-items:center;display:grid}.upload-label input{display:none}.lesson-edit-row{grid-template-columns:1fr 1.5fr auto auto;align-items:start;gap:7px;margin-top:10px;display:grid}.lesson-edit-row input,.lesson-edit-row textarea{padding:8px;font-size:10px}.lesson-edit-row small{color:#909aac;padding-top:8px;font-size:9px}.lesson-edit-row .btn{padding:7px 8px}.materials{background:#f8f9fc;border-radius:7px;margin:10px 0 2px 8px;padding:8px 10px}.materials-title{color:#7b879a;margin-bottom:5px;font-size:9px;font-weight:700;display:block}.material-row{justify-content:space-between;align-items:center;font-size:10px;display:flex}.material-row a{color:#315ed0}.material-add{grid-template-columns:.7fr 1.2fr 30px;gap:5px;margin-top:6px;display:grid}.material-add input{padding:7px;font-size:10px}.add-lesson{gap:6px;padding:10px;display:flex}.tip{color:#526585;background:#f1f5ff;border-color:#e0e9ff;font-size:11px}.tip b{color:#263c70}.tip p{margin:5px 0 0;line-height:1.5}.back-link{align-items:center;gap:6px;margin:0 0 17px;display:inline-flex}.cover-edit .field{margin-bottom:0}.detail-grid{grid-template-columns:1fr 1fr;gap:15px;display:grid}.detail-line{border-top:1px solid #edf0f4;justify-content:space-between;gap:12px;padding:12px 0;font-size:11px;display:flex}.detail-line span{color:#7a879a}.course-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;display:grid}.report-card{color:#26344e;gap:12px;padding:20px;text-decoration:none;display:grid}.report-card:hover{border-color:#9bb2ef;transform:translateY(-1px)}.report-card small{color:#828da0}.report-icon{color:#3966d4}.funnel-row{grid-template-columns:minmax(130px,1fr) 3fr 30px;align-items:center;gap:13px;padding:10px 0;font-size:11px;display:grid}.progress-track{background:#edf0f5;border-radius:10px;height:8px;overflow:hidden}.progress-track i{border-radius:inherit;background:#416de0;height:100%;display:block}.mobile-menu{background:0 0;border:0;display:none}.loading-screen{color:#78849a;place-items:center;height:100vh;font-size:13px;display:grid}@media (width<=1050px){.editor-grid{grid-template-columns:1fr}.stat-grid{grid-template-columns:repeat(2,1fr)}}@media (width<=760px){.sidebar{transition:transform .2s;transform:translate(-100%)}.sidebar.show{transform:translate(0);box-shadow:20px 0 50px #11182730}.main-area{width:100%;margin-left:0}.mobile-menu{display:block}.topbar{height:56px;padding:0 15px}.page-content{padding:22px 14px}.top-user{font-size:0}.top-user .avatar{font-size:12px}.page-heading{align-items:flex-start}.page-heading h1{font-size:25px}.stat-grid{gap:9px}.stat-card{padding:13px}.stat-card>b{font-size:23px}.stat-top{font-size:10px}.form-grid,.detail-grid{grid-template-columns:1fr}.full{grid-column:auto}.toolbar{flex-wrap:wrap}.toolbar select{flex:1}.table-wrap table{min-width:670px}.lesson-edit-row{grid-template-columns:1fr 1fr}.section-add{flex-wrap:wrap}.section-add input{min-height:38px}.activity-row{align-items:flex-start}.activity-row time{display:none}}.upload-progress{color:#526079;align-items:center;gap:10px;margin:8px 0;font-size:10px;display:flex}.upload-progress progress{accent-color:#2f5fe3;width:55%;height:9px}.upload-progress button{color:#bc4549;cursor:pointer;background:0 0;border:0;font-size:10px}.video-preview{align-items:center;gap:10px;margin:5px 0 8px;font-size:10px;display:flex}.video-preview video{background:#111;border-radius:6px;width:180px;max-height:100px}.video-preview a{color:#315ed0}.teacher-assign{border-top:1px solid #edf0f4;gap:9px;margin-top:18px;padding-top:15px;display:grid}.teacher-assign h3{margin:0;font-size:12px}.teacher-assign label{align-items:center;gap:8px;font-size:11px;display:flex}.teacher-assign label small{color:#8692a5;margin-left:auto}.teacher-assign .btn{justify-self:start}.teacher-assign>small{color:#5676be}.user-actions{gap:12px;display:grid}.user-actions h2{margin:0}.actions-line{align-items:end;gap:12px;display:flex}.actions-line .field{flex:1;max-width:260px}.enrollment-action{border-top:1px solid #edf0f4;justify-content:space-between;padding:8px 0;font-size:11px;display:flex}.enrollment-action button{color:#b43f45;cursor:pointer;background:0 0;border:0;font-size:11px}.cover-file{margin-top:11px}.cover-file input{font-size:11px}.teacher-assign input{accent-color:#2f5fe3}.lesson-edit-row select{color:#526079;background:#fff;border:1px solid #dce3ed;border-radius:8px;padding:8px;font-size:10px}.video-preview iframe{background:#111;border:0;border-radius:7px;width:220px;height:125px}.video-preview video{width:220px;height:auto}.btn:focus-visible,.icon-btn:focus-visible,.sidebar nav a:focus-visible{outline-offset:2px;outline:3px solid #9bb3ff}.pager{color:#78859a;justify-content:space-between;align-items:center;padding:10px 2px;font-size:10px;display:flex}.pager>div{align-items:center;gap:8px;display:flex}.pager .btn{padding:7px 10px;font-size:10px}.date-filter{color:#738096;align-items:center;gap:6px;font-size:10px;display:flex}.date-filter input,.toolbar>input{background:#fff;border:1px solid #dce3ed;border-radius:8px;padding:8px;font-size:11px}.lesson-card[draggable=true]{cursor:grab}.lesson-card[draggable=true]:active{cursor:grabbing}.course-state,.course-actions{align-items:center;gap:10px;display:flex}.course-actions{justify-content:flex-end}.course-switch{cursor:pointer;background:#cbd3df;border:0;border-radius:999px;width:38px;height:22px;padding:0;transition:background .18s;position:relative}.course-switch i{background:#fff;border-radius:50%;width:16px;height:16px;transition:transform .18s;position:absolute;top:3px;left:3px;box-shadow:0 1px 3px #17213f35}.course-switch.on{background:#16a34a}.course-switch.on i{transform:translate(16px)}.course-switch:focus-visible{outline-offset:2px;outline:3px solid #9bb3ff}.material-add{grid-template-columns:minmax(180px,1fr) auto}.materials-hint{color:#8692a5;margin-top:6px;font-size:9px;display:block}.rooms-grid{grid-template-columns:minmax(0,1.35fr) minmax(320px,1fr);align-items:start;gap:18px;display:grid}.rooms-grid .panel-title span{font-size:11px}.campus-map{width:100%;height:auto;display:block}.map-floor{fill:#eef2f7;stroke:#d5dde8;stroke-width:1px}.map-room{cursor:pointer;outline:none}.map-room .top{fill:#fff;stroke:#cfd8e4;stroke-width:1px}.map-room .side{fill:#dfe6ef}.map-room .side.dark{fill:#cdd6e2}.map-room:hover .top{fill:#eef3ff}.map-room:focus-visible .top{stroke:#2f5fe3;stroke-width:2px}.map-room.is-selected .top{fill:#2f5fe3;stroke:#234dc5}.map-room.is-selected .side{fill:#2a52c4}.map-room.is-selected .side.dark{fill:#1f43a8}.map-name{fill:#1c2a46;pointer-events:none;font-size:10px;font-weight:750}.map-meta{fill:#6b7890;pointer-events:none;font-size:8px}.map-room.is-selected .map-name,.map-room.is-selected .map-meta{fill:#fff}.room-head{align-items:center;gap:12px;display:flex}.room-head h2{margin:0 0 3px}.room-head p{margin:0;font-size:12px}.room-detail h3{color:#43516a;margin:20px 0 10px;font-size:12px}.room-assign{gap:10px;display:grid}@media (width<=1050px){.rooms-grid{grid-template-columns:1fr}}.map-room.is-empty .top{fill:#f8fafc;stroke-dasharray:4 3}.map-room.is-empty .map-meta{fill:#a0a9b8;font-style:italic}.map-room.is-fixed .top{fill:#f1f4f8}.room-note{color:#56647b;background:#f6f8fc;border-radius:10px;margin:18px 0 0;padding:14px;font-size:12px;line-height:1.6}.card-preview{background:#fff;border-radius:999px;align-items:center;gap:10px;max-width:100%;padding:6px 16px 6px 6px;display:inline-flex;box-shadow:0 4px 14px #1118271f}.card-preview-icon{color:#fff;background:#2f5fe3;border-radius:50%;flex:none;place-items:center;width:34px;height:34px;display:grid}.card-preview>span:last-child{min-width:0;display:grid}.card-preview b{color:#16213f;white-space:nowrap;text-overflow:ellipsis;font-size:13px;overflow:hidden}.card-preview small{color:#4b5563;align-items:center;gap:6px;font-size:11px;display:flex}.online-dot.idle{background:#9ca3af}.room-assign{gap:12px;margin-top:22px;display:grid}.room-warn{color:#8a5a00;background:#fff7e6;border-radius:8px;margin:0;padding:9px 11px;font-size:11px;line-height:1.5}.room-list{gap:6px;margin:6px 0 0;padding:0;list-style:none;display:grid}.room-list li{align-items:center;gap:10px;display:flex}.room-list li>button:first-child{flex:1;min-width:0}.room-list li.is-closed>button:first-child{background:#f6f7f9}.room-list li.is-closed b{color:#7b879a}.switch-spacer{flex:none;width:38px}.room-list li>button:first-child{text-align:left;color:#35445c;cursor:pointer;background:#fff;border:1px solid #e5eaf1;border-radius:9px;grid-template-columns:130px minmax(0,1fr) auto;align-items:center;gap:12px;width:100%;padding:10px 12px;font-size:12px;display:grid}.room-list li>button:first-child:hover{background:#f6f8fc}.room-list li>button:first-child.is-selected{background:#eef3ff;border-color:#2f5fe3}.room-list b{color:#16213f}.room-list span{white-space:nowrap;text-overflow:ellipsis;min-width:0;overflow:hidden}.room-list span.is-empty{color:#a0a9b8;font-style:italic}.room-dialog{width:min(480px,100vw - 32px);color:var(--foreground);border:0;border-radius:16px;margin:auto;padding:24px;box-shadow:0 24px 60px #11182740}.room-dialog::backdrop{background:#16213f66}.room-dialog .room-head{align-items:flex-start}.room-dialog .room-head>div{flex:1}.room-dialog h3{color:#43516a;margin:0 0 10px;font-size:12px}.dialog-actions{justify-content:flex-end;gap:8px;margin-top:4px;display:flex}.map-room.is-closed .top{fill:#e4e8ee;stroke:#c9d1dc;stroke-dasharray:4 3}.map-room.is-closed .side{fill:#d3d9e1}.map-room.is-closed .side.dark{fill:#c3cad4}.map-room.is-closed .map-name{fill:#7b879a}.map-room.is-closed .map-meta{fill:#a06a00;font-weight:700}.map-room.is-closed.is-selected .top{fill:#7b879a}.room-list .course-switch{flex:none}.room-list .course-switch:disabled{opacity:.6;cursor:wait}.area-courses{gap:6px;margin:0;padding:0;list-style:none;display:grid}.area-courses li{color:#34435d;border:1px solid #e5eaf1;border-radius:8px;justify-content:space-between;align-items:center;gap:10px;padding:8px 11px;font-size:12px;display:flex}.tabs{border-bottom:1px solid #e4e9f0;gap:4px;margin:0 0 18px;display:flex}.tabs a{color:#6b7890;border-bottom:2px solid #0000;margin-bottom:-1px;padding:10px 14px;font-size:13px;font-weight:650;text-decoration:none}.tabs a:hover{color:#26344e}.tabs a.active{color:#2f5fe3;border-bottom-color:#2f5fe3}.tab-toolbar{justify-content:space-between;align-items:center;gap:16px;margin:0 0 16px;display:flex}.tab-toolbar p{margin:0;font-size:13px}.teacher-table table{white-space:normal;min-width:960px}.teacher-table td{vertical-align:middle}.teacher-table td:last-child{width:92px}.teacher-profile-cell{color:#78849a;align-items:center;gap:9px;max-width:330px;font-size:10px;display:flex}.teacher-profile-cell>span:nth-child(2){text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.teacher-profile-cell img,.teacher-profile-avatar{object-fit:cover;border-radius:50%;flex:none;width:30px;height:30px}.teacher-profile-avatar{color:#365fd3;background:#e7edff;place-items:center;font-size:11px;font-weight:800;display:grid}.teacher-profile-cell .text-button{white-space:nowrap;margin-left:auto;font-size:10px}.teacher-dialog{color:#26344e;background:#fff;border:1px solid #e4e9f0;border-radius:18px;width:min(620px,100vw - 32px);max-height:min(90vh,760px);margin:auto;padding:0;overflow:auto;box-shadow:0 24px 70px #11182740}.teacher-dialog::backdrop{-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#16213f66}.teacher-dialog-form{gap:16px;padding:25px;display:grid}.teacher-dialog-head{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.teacher-dialog-head h2{letter-spacing:-.03em;color:#16213f;margin:5px 0;font-size:21px}.teacher-dialog-head .muted{margin:0;font-size:12px}.teacher-dialog-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:13px;display:grid}.teacher-dialog-grid textarea{resize:vertical;color:#273550;background:#fff;border:1px solid #dce3ed;border-radius:8px;width:100%;padding:10px 11px;font-family:inherit;font-size:12px}.teacher-dialog-full{grid-column:1/-1}.teacher-dialog-note{color:#7d899d;margin:0;font-size:10px}.teacher-dialog .error-text{margin:0}.teacher-dialog .dialog-actions{margin-top:0}@media (width<=620px){.teacher-dialog-grid{grid-template-columns:1fr}.teacher-dialog-full{grid-column:auto}.teacher-dialog-form{padding:20px}}.course-dialog{color:#26344e;background:#fff;border:1px solid #e4e9f0;border-radius:14px;width:min(920px,100vw - 32px);max-height:90vh;margin:auto;padding:26px;overflow:auto;box-shadow:0 24px 70px #11182740}.course-dialog::backdrop{-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#16213f66}.course-dialog .panel-title{margin:0}.course-dialog .form-actions{margin-top:4px}.area-course-tabs{border-bottom:1px solid #e4e9f0;flex-wrap:wrap;gap:0 4px;margin:0 0 18px;display:flex;overflow:visible}.area-course-tabs button{color:#6b7890;font:inherit;white-space:normal;cursor:pointer;background:0 0;border:0;border-bottom:2px solid #0000;border-radius:0;flex:0 auto;align-items:center;gap:7px;margin-bottom:-1px;padding:10px 14px;font-size:13px;font-weight:650;display:inline-flex}.area-course-tabs button:hover{color:#26344e}.area-course-tabs button.active{color:#2f5fe3;border-bottom-color:#2f5fe3}.area-course-tabs button span{color:#69778e;background:#eef2f7;border-radius:999px;justify-content:center;align-items:center;min-width:20px;height:18px;padding:0 6px;font-size:10px;font-weight:700;line-height:1;display:inline-flex}.area-course-tabs button.active span{color:#2f5fe3;background:#e5ecff}.course-toolbar{justify-content:space-between;min-height:42px;margin-bottom:12px}.course-toolbar .muted{margin:0}.status.rejected{color:#c43e42;background:#fff1f0}.course-editor-tabs button{color:#6b7890;font:inherit;cursor:pointer;background:0 0;border:0;border-bottom:2px solid #0000;margin-bottom:-1px;padding:10px 14px;font-size:13px;font-weight:650}.course-editor-tabs button:hover{color:#26344e}.course-editor-tabs button.active{color:#2f5fe3;border-bottom-color:#2f5fe3}.editor-grid.editor-single{grid-template-columns:minmax(0,1fr)}.section-add{justify-content:flex-end}.course-edit-dialog{color:#26344e;background:#fff;border:1px solid #e4e9f0;border-radius:16px;width:min(480px,100vw - 32px);margin:auto;padding:24px;box-shadow:0 24px 60px #11182740}.course-edit-dialog::backdrop{-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#16213f66}.course-edit-dialog form{gap:18px;display:grid}.course-edit-dialog header{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.course-edit-dialog h2{color:#172543;margin:5px 0;font-size:20px}.course-edit-dialog .dialog-actions{margin-top:2px}.editor-grid.editor-single{grid-template-columns:minmax(0,1fr);width:100%;max-width:1120px;margin:0 auto}.course-details-form{grid-template-columns:repeat(2,minmax(0,1fr));align-items:start;gap:13px 18px}.course-details-form>.field:has(textarea){grid-column:1/-1}.course-details-form>.btn{justify-self:start}.cover-edit{max-width:650px}.cover-edit .cover-file{max-width:600px}@media (width<=640px){.course-details-form{grid-template-columns:1fr}.course-details-form>.field:has(textarea){grid-column:auto}}.video-upload-control{align-content:start;justify-items:center;gap:2px;display:grid}.video-upload-hint{color:#8995a8;text-align:center;width:118px;font-size:8px;line-height:1.35}.details-save-action{box-sizing:border-box;border-top:1px solid #e8edf3;justify-content:space-between;align-items:center;gap:16px;width:100%;margin-top:18px;padding-top:16px;display:flex}.details-save-action .btn{flex:none}.details-save-action .btn[type=submit]{margin-left:auto}@media (width<=480px){.details-save-action{flex-wrap:wrap}.details-save-action .btn[type=submit]{margin-left:0}}.editor-grid.editor-content{grid-template-columns:minmax(0,1fr);width:100%;max-width:none;margin:0;display:block!important}.editor-grid.editor-content>.panel{box-sizing:border-box;width:100%;max-width:none;display:block}.lesson-row{align-items:flex-start}.lesson-row>div:first-child{flex:1;min-width:0}.lesson-actions{flex:none;gap:4px}.video-upload-control{min-width:64px}.video-upload-hint{width:auto;max-width:78px;font-size:9px}.lesson-edit-dialog form{gap:14px}.lesson-edit-dialog .muted{margin:4px 0 0;font-size:11px}.lesson-edit-dialog .field textarea{resize:vertical}.section-actions{align-items:center;gap:5px;display:flex}.section-action-text,.lesson-edit-action{color:#43516a;font:inherit;cursor:pointer;background:#fff;border:1px solid #dce3ed;border-radius:7px;padding:6px 10px;font-size:11px;font-weight:650}.section-action-text:hover,.lesson-edit-action:hover{color:#2f5fe3;background:#f5f7fb}.section-order-label{color:#8994a6;margin-left:7px;font-size:10px}.lesson-actions{flex-wrap:wrap;align-items:center;gap:7px;display:flex}.lesson-order-actions{background:#fff;border:1px solid #e2e7ef;border-radius:7px;align-items:center;gap:0;display:flex}.lesson-order-actions .icon-btn{width:27px;height:28px}.video-file-action{color:#43516a;cursor:pointer;white-space:nowrap;background:#fff;border:1px solid #dce3ed;border-radius:7px;align-items:center;gap:6px;padding:6px 9px;font-size:11px;font-weight:650;display:flex}.video-file-action:hover{color:#2f5fe3;background:#f9faff;border-color:#9ab0e8}.video-file-action input{display:none}.video-upload-control{flex-direction:column;align-items:center;gap:2px;display:flex}.video-upload-hint{color:#8a95a7;white-space:nowrap;width:auto;max-width:none;font-size:9px}.lesson-delete-action{color:#cf4545;cursor:pointer;background:#fff7f7;border:1px solid #f5c5c5;border-radius:7px;place-items:center;width:30px;height:30px;display:inline-grid}.lesson-delete-action:hover{background:#ffeded;border-color:#edaaaa}.section-head>div.section-actions{flex-wrap:wrap;justify-content:flex-end}@media (width<=720px){.section-head{align-items:flex-start;gap:8px}.section-actions{flex-wrap:wrap}.lesson-actions{justify-content:flex-start}.video-upload-control{align-items:flex-start}}.section-card{background:#fff;border:1px solid #e5eaf1;border-radius:12px;margin:12px 0;overflow:hidden}.section-head{background:#f8f9fc;border-bottom:1px solid #edf0f4;justify-content:space-between;align-items:center;gap:12px;padding:8px 10px 8px 6px;display:flex}.section-card.is-collapsed .section-head{border-bottom:0}.section-toggle{color:#1c2a46;text-align:left;cursor:pointer;background:0 0;border:0;flex:1;align-items:center;gap:10px;min-width:0;padding:6px;font-size:13px;display:flex}.section-toggle b{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.section-chevron{color:#7b879a;flex:none;transition:transform .15s}.section-card.is-collapsed .section-chevron{transform:rotate(-90deg)}.section-number{color:#2f5fe3;background:#e6edff;border-radius:7px;flex:none;place-items:center;width:24px;height:24px;font-size:11px;font-weight:800;display:grid}.section-actions{flex-wrap:nowrap;gap:2px}.section-actions .icon-btn:disabled,.lesson-dialog-order .icon-btn:disabled{opacity:.35;cursor:default;background:0 0}.section-body{padding:8px 14px 12px}.section-empty{color:#8a95a7;margin:6px 0 10px;font-size:12px}.lesson-bullets{margin:0;padding:0;list-style:none}.lesson-bullet{border-radius:8px}.lesson-bullet-btn{color:#26344e;text-align:left;cursor:pointer;background:0 0;border:0;border-radius:8px;align-items:center;gap:10px;width:100%;padding:9px 8px;font-size:13px;display:flex}.lesson-bullet-btn:hover{background:#f3f6fb}.lesson-bullet-btn:hover .lesson-bullet-title{color:#2f5fe3}.lesson-dot{background:#2f5fe3;border-radius:50%;flex:none;width:7px;height:7px}.lesson-bullet-title{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.lesson-chip{color:#9aa4b4;background:#f0f2f6;border-radius:999px;flex:none;align-items:center;gap:4px;padding:3px 7px;font-size:11px;font-weight:700;display:inline-flex}.lesson-chip.ok{color:#20864f;background:#e8f7ef}.add-lesson-btn{color:#2f5fe3;cursor:pointer;background:0 0;border:1px dashed #cdd6e3;border-radius:8px;align-items:center;gap:6px;margin-top:6px;padding:8px 10px;font-size:12px;font-weight:700;display:inline-flex}.add-lesson-btn:hover{background:#f3f6ff;border-color:#9bb2ef}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.lesson-dialog{width:min(980px,100vw - 32px);max-height:calc(100dvh - 32px);overflow:auto}.lesson-dialog-grid{grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:16px;margin:18px 0;display:grid}.lesson-dialog-side{align-content:start;gap:16px;display:grid}.lesson-pane{border:1px solid #e8edf3;border-radius:12px;align-content:start;gap:12px;padding:16px;display:grid}.lesson-pane h4{color:#1c2a46;margin:0;font-size:13px}.lesson-pane .materials{background:0 0;margin:0;padding:0}.lesson-pane-empty{color:#8a95a7;text-align:center;border:1px dashed #d5dde8;border-radius:10px;margin:0;padding:22px;font-size:12px}.lesson-pane-actions{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.lesson-dialog .video-preview{margin:0}.lesson-dialog .video-preview iframe,.lesson-dialog .video-preview video{aspect-ratio:16/9;border-radius:10px;width:100%;height:auto}.saved-note{color:#20864f;font-size:12px;font-weight:700}.lesson-dialog-foot{justify-content:space-between;align-items:center;display:flex}.lesson-dialog-order{align-items:center;gap:4px;font-size:12px;display:flex}@media (width<=760px){.lesson-dialog-grid{grid-template-columns:1fr}}.lesson-dialog form.lesson-pane{gap:12px}.lesson-dialog .upload-label{display:inline-flex}.details-save-status{align-items:center;gap:12px;margin-left:auto;display:flex}.details-save-status .error-text{margin:0}