/* v8.6 Site Studio */
.media-filters{grid-template-columns:minmax(220px,1fr) 180px 180px auto;margin-bottom:24px}.media-studio-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.media-studio-card{overflow:hidden;border:1px solid var(--line);border-radius:22px;background:var(--surface);box-shadow:var(--shadow)}.media-preview{position:relative;display:grid;place-items:center;aspect-ratio:16/10;overflow:hidden;background:linear-gradient(135deg,color-mix(in srgb,var(--red) 12%,var(--surface)),var(--surface2))}.media-preview img,.media-preview video{width:100%;height:100%;object-fit:cover}.media-preview .icon{width:34px;height:34px}.media-preview>span{font-size:.78rem;color:var(--muted)}.media-preview.media-file,.media-preview.media-private{display:flex;flex-direction:column;gap:12px;padding:18px;text-align:center}.media-kind-chip{position:absolute;inset:auto 12px 12px auto;padding:5px 10px;border-radius:999px;background:#090b10cc;color:#fff!important}.media-card-body{display:grid;gap:14px;padding:18px}.media-card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}.media-card-head>div{min-width:0}.media-card-head strong,.media-card-head small{display:block}.media-card-head small{margin-top:5px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;direction:ltr;text-align:right}.media-url{display:grid;gap:6px}.media-url span{font-size:.76rem;color:var(--muted)}.media-url input{font:11px/1.4 ui-monospace,SFMono-Regular,Consolas,monospace;direction:ltr;text-align:left}.landing-guide{display:flex;align-items:center;gap:16px;margin-bottom:22px}.landing-guide p{flex:1;margin:0;color:var(--muted)}.landing-guide code{direction:ltr}.dialog-heading{margin-bottom:20px}.dialog-heading h2{margin:.35rem 0 0}@media(max-width:1100px){.media-studio-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.media-filters{grid-template-columns:1fr 1fr}}@media(max-width:680px){.media-studio-grid{grid-template-columns:1fr}.media-filters{display:grid;grid-template-columns:1fr}.landing-guide{align-items:flex-start;flex-direction:column}}
@font-face{font-family:Vazir;src:url(fonts/Vazir.woff2) format('woff2');font-style:normal;font-weight:400;font-display:swap}
@font-face{font-family:Vazir;src:url(fonts/Vazir-Bold.woff2) format('woff2');font-style:normal;font-weight:700;font-display:swap}
:root{font-family:Vazir,system-ui,sans-serif;color-scheme:light;--bg:#f6f7f9;--surface:#fff;--surface2:#f0f1f4;--text:#181b24;--muted:#666c7b;--line:#e4e6ec;--red:#cf2030;--red-bright:#f13a49;--red-soft:#fef0f1;--green:#14775b;--shadow:0 12px 40px #17214208;--radius:18px;--sidebar:256px;font-size:16px}
[data-theme=dark]{color-scheme:dark;--bg:#111318;--surface:#1a1d24;--surface2:#232630;--text:#f0f2f6;--muted:#a7adbb;--line:#30343e;--red:#ff6370;--red-soft:#39252c;--green:#67d1b2;--shadow:0 12px 40px #0002}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--bg);color:var(--text);line-height:1.85}body,button,input,select,textarea{font-family:Vazir,system-ui,sans-serif}a{color:inherit;text-decoration:none}button,input,select,textarea{font-size:.9375rem}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit}button:disabled{opacity:.6;cursor:wait}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--red);outline-offset:4px}button{border:0}svg.icon,.navigation svg,.icon-button svg,.search-button svg{width:21px;height:21px;flex-shrink:0;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}h1,h2,h3,h4,p{margin:0}h1{font-size:2rem;letter-spacing:-.7px;line-height:1.65}h2{font-size:1.25rem;line-height:1.75}h3{font-size:1.0625rem}p{color:var(--muted)}small{font-size:.8125rem}strong,b{font-weight:700}[hidden]{display:none!important}.row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.row.between{justify-content:space-between}.stack{display:grid;gap:16px}.muted{color:var(--muted)}.accent{color:var(--red)}.eyebrow{font-size:.75rem;letter-spacing:1.8px;text-transform:uppercase;color:var(--muted);font-family:system-ui,sans-serif;font-weight:600}.skip-link{position:fixed;top:-100px;right:20px;z-index:200;background:var(--text);color:var(--surface);padding:10px 18px}.skip-link:focus{top:-100px}.skip-link:focus-visible{top:10px}.small-link{font-size:.875rem;color:var(--muted)}.small-link:hover{color:var(--red)}
.app-shell{display:grid;grid-template-columns:var(--sidebar) minmax(0,1fr);min-height:100dvh}.sidebar{height:100dvh;position:sticky;top:0;background:var(--surface);border-inline-end:1px solid var(--line);display:flex;flex-direction:column;min-height:0;z-index:30;overflow:hidden}.sidebar-brand{min-height:92px;display:flex;align-items:center;gap:8px;padding:22px 16px;border-bottom:1px solid var(--line);flex-shrink:0}.brand{display:flex;align-items:center;gap:10px;min-width:0}.brand-mark{background:#e32837;color:#fff;display:flex;align-items:center;justify-content:center;gap:1px;flex-shrink:0;width:42px;height:42px;line-height:1;border-radius:13px;font-family:Arial,sans-serif;font-size:16px;letter-spacing:-1px}.brand-mark span{font-size:12px;margin-top:9px}.brand-name{font-family:Arial,sans-serif;font-size:16px;font-weight:700;line-height:1.25;white-space:nowrap}.brand-name>span{color:var(--red)}.brand-name small{display:block;letter-spacing:1.7px;font-size:9px;margin-top:7px;color:var(--muted);font-weight:400}.sidebar-brand>.icon-button{margin-inline-start:auto;width:24px;min-height:36px;font-size:26px;background:transparent}.sidebar-scroll{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:var(--line) transparent;padding:18px 12px}.navigation{display:flex;flex-direction:column;gap:5px}.navigation a{display:flex;align-items:center;gap:12px;font-size:.875rem;padding:10px 13px;min-height:44px;border-radius:10px;color:var(--muted);white-space:nowrap}.navigation a:hover{background:var(--surface2);color:var(--text)}.navigation a.active,.navigation a[aria-current=page]{background:var(--red-soft);color:var(--red);font-weight:700}.nav-label{font-size:.75rem;color:var(--muted);padding:17px 14px 5px}.sidebar-footer{display:flex;gap:8px;align-items:center;padding:14px 16px;border-top:1px solid var(--line);flex-shrink:0;min-height:86px}.avatar{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border:1px solid var(--line);border-radius:50%;background:var(--surface2);font-size:1.1rem;flex-shrink:0}.profile-button{background:none;display:flex;align-items:center;gap:10px;text-align:start;min-width:0;padding:0;flex:1}.profile-copy{display:flex;flex-direction:column;min-width:0}.profile-copy strong{font-size:.8125rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.profile-copy small{font-size:.75rem;color:var(--muted)}.icon-button{width:40px;min-height:40px;display:inline-flex;align-items:center;justify-content:center;background:var(--surface);border:1px solid var(--line);border-radius:11px;flex-shrink:0}.icon-button:hover{background:var(--surface2)}.workspace-main{min-width:0;display:flex;flex-direction:column}.topbar{min-height:77px;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:16px 36px;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--surface) 90%,transparent);backdrop-filter:blur(16px);position:sticky;top:0;z-index:20}.breadcrumb{font-size:.875rem;color:var(--muted)}.breadcrumb span{padding:0 10px;color:var(--line)}.breadcrumb strong{color:var(--text);font-weight:400}.search-button{display:flex;align-items:center;gap:9px;padding:9px 12px;color:var(--muted);background:var(--bg);border:1px solid var(--line);border-radius:10px;font-size:.8125rem}kbd{font-family:system-ui,monospace;font-size:.6875rem;background:var(--surface);border:1px solid var(--line);border-radius:4px;padding:1px 4px;color:var(--muted)}.mobile-toggle{display:none}#main{padding:30px 36px 42px;width:100%;max-width:1550px;margin:0 auto;flex:1;outline:0}.workspace-footer{display:flex;justify-content:space-between;gap:12px;padding:16px 36px;border-top:1px solid var(--line);font-size:.75rem;color:var(--muted)}.collapsed{--sidebar:84px}.collapsed .brand-name,.collapsed .sidebar-brand>.icon-button,.collapsed .profile-copy,.collapsed .sidebar-footer>[data-logout],.collapsed .navigation a>span,.collapsed .nav-label{display:none}.collapsed .sidebar-brand{padding:22px 20px}.collapsed .sidebar-footer{padding:16px 20px}.collapsed .navigation a{justify-content:center;padding:12px 6px}.collapsed .sidebar-scroll{padding:14px 10px}.collapsed .sidebar:hover .sidebar-brand>.icon-button{display:flex;position:absolute;top:69px;inset-inline-end:4px;background:var(--surface);width:24px;min-height:24px;border:1px solid var(--line);z-index:1}.sidebar-backdrop{position:fixed;inset:0;background:#0008;backdrop-filter:blur(3px);z-index:25}
.page-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px}.page-heading p{margin-top:5px;font-size:.9375rem}.button{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:10px 18px;min-height:44px;border-radius:10px;font-size:.875rem;font-weight:700;line-height:1.5;text-align:center;background:#d82334;color:#fff;border:1px solid transparent}.button:hover{filter:brightness(.94)}.button.secondary{background:var(--surface);color:var(--text);border-color:var(--line)}.button.ghost{color:var(--muted);background:transparent}.button.danger{background:var(--red-soft);color:var(--red)}.button svg{width:18px;height:18px}.dashboard-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px}.hero-card{border-radius:var(--radius);padding:30px;background:#20232b;color:#fff;position:relative;overflow:hidden;min-height:230px;display:flex;align-items:center;justify-content:space-between;gap:26px}.hero-card:after{content:'';position:absolute;width:320px;height:320px;border:1px solid #ffffff0c;border-radius:50%;left:-90px;top:-140px;box-shadow:0 0 0 45px #ffffff04,0 0 0 95px #ffffff03;pointer-events:none}.hero-card h2{font-size:1.7rem}.hero-card p{color:#b9bdc9;margin:10px 0 20px;max-width:480px;font-size:.9375rem}.hero-card .eyebrow{color:#ff919a}.hero-card>div{z-index:1}.hero-code{font-family:monospace;direction:ltr;color:#b7bbc7;line-height:2.2;font-size:.875rem;transform:rotate(-5deg);padding:22px;border:1px solid #ffffff15;border-radius:15px;background:#ffffff04}.hero-code strong{color:#ff7b86}.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin:22px 0}.stat{padding:18px 20px;background:var(--surface);border:1px solid var(--line);border-radius:14px;min-width:0}.stat .label{font-size:.8125rem;color:var(--muted);display:flex;gap:9px;align-items:center}.stat strong{font-size:1.75rem;display:block;margin-top:9px;font-family:Vazir,system-ui}.stat small{color:var(--muted)}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:14px;margin:4px 0 16px}.panel{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:22px;min-width:0;box-shadow:var(--shadow)}.panel>h2{margin-bottom:14px}.panel.flush{padding:0;overflow:hidden}.panel.dark{background:#21252f;color:#fff}.panel.dark p{color:#afb7c7}.panel.dark .eyebrow{color:#a7b3c7}.progress{height:6px;background:var(--surface2);border-radius:6px;overflow:hidden;direction:ltr}.progress i{display:block;height:100%;border-radius:6px;background:#e32837;transition:width .4s}.progress-label{display:flex;justify-content:space-between;gap:10px;margin:12px 0 8px;color:var(--muted);font-size:.8125rem}.course-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.course-card{overflow:hidden;border:1px solid var(--line);background:var(--surface);border-radius:var(--radius);transition:transform .18s,box-shadow .18s;min-width:0}.course-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.course-cover{aspect-ratio:2.2;background:#252b37;position:relative;display:flex;align-items:center;justify-content:space-between;padding:24px;color:#fff;overflow:hidden}.course-cover:after{content:'';position:absolute;left:-30px;bottom:-85px;transform:rotate(-30deg);width:180px;height:240px;border:26px solid #ffffff08}.course-cover .code-index{font-size:2.8rem;font-family:monospace;line-height:1;color:#ffffffb8}.course-cover .eyebrow{color:#fff9}.course-cover img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}.course-cover.tone-1{background:#323f47}.course-cover.tone-2{background:#43313d}.course-body{padding:18px 20px}.course-body h3{margin-bottom:7px}.course-body>p{font-size:.875rem;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden;min-height:3.5em}.course-foot{display:flex;align-items:center;justify-content:space-between;margin-top:18px}.course-foot small{color:var(--muted)}.course-row{display:grid;grid-template-columns:72px minmax(0,1fr) auto;gap:16px;align-items:center;padding:18px 0;border-bottom:1px solid var(--line)}.course-row:last-child{border-bottom:0}.course-tile{height:68px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:var(--surface2);font-family:monospace;font-size:1.4rem;color:var(--red)}.xp-value{font-size:2.6rem;line-height:1.4;font-weight:700;margin:14px 0 2px}.xp-value small{font-family:system-ui;font-size:.875rem;color:var(--muted);font-weight:400}.level-chip{display:inline-flex;align-items:center;gap:8px;padding:4px 10px;background:var(--red-soft);color:var(--red);border-radius:6px;font-size:.8125rem}.activity-dots{display:flex;gap:7px;justify-content:space-between;margin-top:20px}.activity-dots span{height:32px;width:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.75rem;background:var(--surface2);color:var(--muted)}.activity-dots span.on{background:var(--red-soft);color:var(--red)}.tip-box{border-inline-start:2px solid var(--red);padding-inline-start:13px;margin:20px 0}.tip-box p{font-size:.875rem}.list-row{display:flex;gap:14px;align-items:center;padding:15px 0;border-bottom:1px solid var(--line)}.list-row:last-child{border-bottom:0}.list-row>.grow{flex:1;min-width:0}.list-row small{color:var(--muted)}.list-row .avatar{width:36px;height:36px;font-size:.9375rem}.rank{width:28px;text-align:center;color:var(--muted);font-family:system-ui}.xp-mini{font-size:.8125rem;font-family:system-ui;color:var(--red);white-space:nowrap}.empty{text-align:center;padding:42px 20px}.empty>.icon{width:36px;height:36px;color:var(--muted);margin-bottom:10px}.empty p{font-size:.9375rem;max-width:470px;margin:8px auto 18px}.loading{min-height:220px;display:grid;place-content:center;color:var(--muted)}.loading:before{content:'';display:block;width:26px;height:26px;border:2px solid var(--line);border-top-color:var(--red);border-radius:50%;margin:0 auto 15px;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.error-panel{border:1px solid var(--red);background:var(--red-soft);border-radius:14px;padding:24px;white-space:pre-wrap}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);max-width:min(600px,calc(100% - 32px));z-index:110;background:var(--text);color:var(--surface);box-shadow:0 6px 35px #0003;border-radius:12px;padding:13px 22px;font-size:.875rem;white-space:pre-line}.pagination{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px 0;font-size:.875rem;color:var(--muted)}
.field{display:flex;flex-direction:column;gap:7px;min-width:0;font-size:.875rem}.field>span{font-weight:700}.field input,.field textarea,.field select,select.filter,input.filter{width:100%;min-height:45px;padding:10px 12px;border:1px solid var(--line);border-radius:9px;background:var(--surface);color:var(--text);outline-offset:2px}.field textarea{min-height:125px;resize:vertical;line-height:1.8}.field input[type=checkbox]{width:22px;min-height:22px;accent-color:var(--red);align-self:flex-start}.field input[type=file]{font-size:.8125rem}.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.form-grid>.wide{grid-column:1/-1}.form-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:22px}.filters{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:22px}.filters .field{min-width:150px;max-width:230px}.tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);padding-bottom:10px;margin-bottom:18px;overflow-x:auto}.tabs button{background:transparent;white-space:nowrap;padding:8px 14px;border-radius:8px;color:var(--muted)}.tabs button.active{background:var(--red-soft);color:var(--red)}dialog{width:min(760px,calc(100% - 32px));max-height:calc(100dvh - 60px);padding:34px;border:1px solid var(--line);border-radius:22px;background:var(--surface);color:var(--text);box-shadow:0 20px 90px #0004}dialog::backdrop{background:#080b13a8;backdrop-filter:blur(6px)}.dialog-close{position:absolute;top:12px;inset-inline-end:12px;font-size:26px;background:transparent;border:0}#dialog-content{padding-top:18px}#dialog-content h2{margin-bottom:18px}#dialog-content .stack{margin-top:15px}.status{display:inline-flex;align-items:center;font-size:.75rem;padding:3px 9px;border-radius:6px;color:var(--muted);background:var(--surface2);white-space:nowrap}.status.pending,.status.draft{color:#865000;background:#fff1d4}.status.accepted,.status.published{color:#146449;background:#e2f4ed}.status.rejected{color:#a92535;background:#ffe6e8}[data-theme=dark] .status.pending,[data-theme=dark] .status.draft{color:#ffcf85;background:#423721}[data-theme=dark] .status.accepted,[data-theme=dark] .status.published{color:#80dfb8;background:#1b3930}[data-theme=dark] .status.rejected{color:#ffa4af;background:#452a30}.assignment-card{padding:24px;margin-bottom:18px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}.assignment-card p{white-space:pre-wrap;font-size:.9375rem;margin:12px 0}.assignment-meta{display:flex;gap:22px;flex-wrap:wrap;font-size:.8125rem;color:var(--muted);margin:15px 0}.dropzone{border:2px dashed var(--line);border-radius:14px;padding:30px;text-align:center;background:var(--bg);margin:18px 0}.dropzone.dragging{border-color:var(--red);background:var(--red-soft)}.dropzone p{font-size:.875rem;margin:10px}.dropzone input{width:100%;max-width:320px;font-size:.875rem}.revision{border-inline-start:2px solid var(--line);padding:0 18px 25px;margin-inline-start:8px}.feedback-message{padding:12px 15px;background:var(--surface2);border-radius:10px;margin-top:10px;white-space:pre-wrap;font-size:.9375rem}.feedback-message small{display:block}.badge-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.badge-card{text-align:center;padding:30px 20px;border:1px solid var(--line);border-radius:18px;background:var(--surface)}.badge-card .badge-symbol{display:grid;place-items:center;width:72px;height:72px;border-radius:22px;border:1px solid var(--line);background:var(--surface2);margin:0 auto 20px;color:var(--muted)}.badge-card .badge-symbol svg{width:32px;height:32px}.badge-card.earned .badge-symbol{background:var(--red-soft);color:var(--red);border-color:color-mix(in srgb,var(--red) 25%,transparent)}.badge-card p{font-size:.875rem;margin:8px 0}.podium{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:28px 0;align-items:end}.podium-card{padding:28px 20px;text-align:center;border:1px solid var(--line);border-radius:20px;background:var(--surface)}.podium-card:first-child{background:#252831;color:#fff;grid-column:2;grid-row:1;padding-top:44px;border-color:transparent}.podium-card:nth-child(2){grid-column:1;grid-row:1}.podium-card:nth-child(3){grid-column:3;grid-row:1}.podium-card .avatar{margin:12px 0;width:56px;height:56px}.podium-card:first-child .avatar{background:#3b3d48;border-color:#ffffff20}.podium-card strong{display:block}.podium-card .xp-value{font-size:1.7rem;color:var(--red)}.mine-row{background:var(--red-soft);border:1px solid color-mix(in srgb,var(--red) 20%,transparent);border-radius:12px;padding:16px 22px}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:14px;background:var(--surface)}table{border-collapse:collapse;width:100%;text-align:start;font-size:.875rem;white-space:nowrap}th,td{padding:14px 18px;border-bottom:1px solid var(--line);text-align:start}th{background:var(--surface2);font-size:.8125rem;color:var(--muted)}tr:last-child td{border-bottom:0}.table-wrap td.wrap{white-space:normal;min-width:180px;max-width:360px}
.course-banner{padding:32px;min-height:240px;background:#222733;color:#fff;border-radius:22px;margin-bottom:24px;position:relative;overflow:hidden}.course-banner img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.15}.course-banner>div{position:relative}.course-banner p{max-width:760px;color:#c4c8d2;margin:12px 0 22px}.course-banner .progress{max-width:450px;background:#ffffff15}.course-banner .progress-label{max-width:450px;color:#c4c8d2}.curriculum-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:24px}.chapter{border:1px solid var(--line);border-radius:14px;background:var(--surface);margin-bottom:14px;overflow:hidden}.chapter summary{cursor:pointer;padding:18px 22px;font-weight:700;font-size:.9375rem;list-style-position:inside}.chapter summary span{float:left;font-size:.8125rem;font-weight:400;color:var(--muted)}.lesson-row{display:flex;align-items:center;gap:14px;padding:16px 22px;border-top:1px solid var(--line);font-size:.9375rem}.lesson-row:hover{background:var(--bg)}.lesson-row .lesson-name{flex:1}.lesson-row small{color:var(--muted)}.lesson-row.completed svg{color:var(--green)}.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:24px;align-items:start}.video-stage{background:#07080a;border-radius:16px;overflow:hidden;position:relative;aspect-ratio:16/9}.video-stage video{width:100%;height:100%;display:block}.video-stage .empty{color:#fff;height:100%;display:grid;place-content:center}.player-tools{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:14px 0;flex-wrap:wrap}.player-tools .row{gap:6px}.player-tools button{font-size:.8125rem;min-height:38px;padding:8px 12px}.player-tools select{padding:5px;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:8px}.player-tabs{margin-top:22px}.lesson-side{max-height:calc(100dvh - 140px);position:sticky;top:100px;overflow:auto}.lesson-side .lesson-row{padding:13px;font-size:.8125rem}.lesson-side .chapter summary{padding:13px;font-size:.875rem}.theater .lesson-layout{grid-template-columns:minmax(0,1fr)}.theater .lesson-side{display:none}.theater #main{max-width:1800px}.note{padding:14px;border-bottom:1px solid var(--line);white-space:pre-wrap}.note:last-child{border-bottom:0}.note small{color:var(--red)}.mentor-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:22px}.chat-panel{display:flex;flex-direction:column;min-height:540px;max-height:75dvh}.chat-messages{flex:1;overflow-y:auto;min-height:180px;padding:24px;display:flex;flex-direction:column;gap:18px}.chat-message{padding:16px 19px;border-radius:14px;background:var(--surface2);align-self:flex-start;max-width:94%;white-space:pre-wrap;overflow-wrap:anywhere;font-size:.9375rem}.chat-message.user{background:var(--red-soft);align-self:flex-end}.chat-message .eyebrow{margin-bottom:8px;display:block}.chat-compose{padding:18px;border-top:1px solid var(--line);display:flex;gap:12px;align-items:flex-end}.chat-compose textarea{flex:1;min-width:0;min-height:74px;resize:vertical;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--text);padding:12px}.code-editor{direction:ltr;text-align:left;font-family:monospace!important;font-size:.875rem!important;tab-size:4;min-height:250px!important}.discussion-card{padding:20px 24px;border:1px solid var(--line);border-radius:14px;margin-bottom:14px;background:var(--surface)}.discussion-card p{white-space:pre-wrap;margin:10px 0;font-size:.9375rem}.editor-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:22px;align-items:start}.editor-toolbar{display:flex;gap:6px;flex-wrap:wrap;margin:14px 0}.editor-toolbar button{padding:6px 12px;background:var(--surface2);border-radius:6px;min-height:36px}.editor-body{min-height:450px!important}.rich-content{overflow-wrap:anywhere;font-size:1rem;line-height:2.2}.rich-content h1,.rich-content h2,.rich-content h3{margin:28px 0 12px}.rich-content p{margin:15px 0;color:var(--text)}.rich-content ul,.rich-content ol{padding-inline-start:26px}.rich-content a{color:var(--red);text-decoration:underline}.rich-content pre{background:#171b24;color:#e5e8ef;direction:ltr;text-align:left;line-height:1.8;padding:20px;border-radius:12px;overflow:auto;font-family:monospace;font-size:.875rem}.rich-content code{font-family:monospace}.rich-content blockquote{border-inline-start:3px solid var(--red);padding:8px 20px;margin:20px 0;background:var(--red-soft)}.rich-content img{max-width:100%;border-radius:12px}.bars{display:flex;align-items:flex-end;gap:clamp(2px,.6vw,7px);height:160px;padding-top:15px;min-width:0}.bars>div{flex:1;min-width:0;background:var(--red-soft);border-radius:4px 4px 0 0;position:relative}.bars>div:hover{background:var(--red)}
@media(min-width:1450px){.dashboard-layout{grid-template-columns:minmax(0,1fr) 330px}.hero-card{padding:38px}}
@media(max-width:1200px){:root{--sidebar:228px}#main{padding:26px}.topbar{padding:16px 26px}.dashboard-layout{grid-template-columns:minmax(0,1fr) 260px;gap:18px}.stats-grid{grid-template-columns:repeat(2,1fr)}.hero-code{display:none}.course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.lesson-layout{grid-template-columns:minmax(0,1fr) 230px}.editor-layout{grid-template-columns:minmax(0,1fr) 260px}}
@media(max-width:900px){.app-shell{display:block}.sidebar{position:fixed;inset-inline-start:0;top:0;width:280px;max-width:calc(100vw - 50px);transform:translateX(110%);transition:transform .2s}.drawer-open .sidebar{transform:translateX(0)}.collapsed .brand-name,.collapsed .profile-copy,.collapsed .navigation a>span,.collapsed .nav-label{display:revert}.collapsed .navigation a{justify-content:flex-start;padding:10px 13px}.collapsed .sidebar-brand{padding:22px 16px}.collapsed .sidebar-brand>.icon-button{display:flex}.collapsed .sidebar-scroll{padding:18px 12px}.collapsed .sidebar-footer{padding:14px 16px}.mobile-toggle{display:inline-flex}.topbar{padding:13px 20px;min-height:70px}.dashboard-layout{grid-template-columns:minmax(0,1fr) 260px}.curriculum-layout,.mentor-layout,.editor-layout{grid-template-columns:minmax(0,1fr)}.lesson-layout{grid-template-columns:minmax(0,1fr)}.lesson-side{position:static;max-height:350px}.breadcrumb{font-size:.8125rem}.topbar .small-link{display:none}.search-button span,.search-button kbd{display:none}.search-button{padding:10px}.stats-grid{margin:18px 0}.badge-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.chat-panel{max-height:none}.mentor-context{order:-1}.mentor-context .code-editor{min-height:160px!important}}
@media(max-width:680px){#main{padding:22px 16px 30px}.workspace-footer{padding:16px;font-size:.6875rem}.topbar{padding:12px 16px;gap:10px}.topbar>.row{gap:8px}.topbar .breadcrumb{font-size:.75rem}.breadcrumb>span{padding:0 4px}h1{font-size:1.55rem}.page-heading{align-items:flex-start;flex-direction:column;gap:13px;margin-bottom:20px}.page-heading p{font-size:.875rem}.page-heading .row{width:100%}.dashboard-layout{grid-template-columns:minmax(0,1fr)}.dashboard-aside{display:grid;grid-template-columns:1fr;gap:18px}.hero-card{padding:25px;min-height:230px}.hero-card h2{font-size:1.4rem}.hero-card p{font-size:.875rem}.stat{padding:15px}.stat .label{font-size:.75rem}.stat strong{font-size:1.5rem}.stats-grid{gap:10px}.course-grid{grid-template-columns:minmax(0,1fr)}.course-row{grid-template-columns:52px minmax(0,1fr);gap:12px}.course-row>.button{grid-column:2;justify-self:start}.course-tile{height:52px;font-size:1.1rem}.panel{padding:18px}.panel.flush{padding:0}.badge-grid{gap:12px}.badge-card{padding:22px 14px}.badge-card h3{font-size:.9375rem}.badge-card p{font-size:.8125rem}.badge-symbol{width:58px!important;height:58px!important}.podium{gap:8px}.podium-card{padding:20px 8px;border-radius:14px}.podium-card:first-child{padding-top:32px}.podium-card strong{font-size:.8125rem;overflow-wrap:anywhere}.podium-card .xp-value{font-size:1.25rem}.podium-card .avatar{width:44px;height:44px}.form-grid{grid-template-columns:minmax(0,1fr)}.form-grid>.wide{grid-column:auto}.assignment-card{padding:20px}.assignment-meta{gap:10px;font-size:.75rem}dialog{padding:22px;max-height:calc(100dvh - 28px);width:calc(100% - 24px)}.course-banner{padding:24px}.lesson-row{padding:14px;gap:10px;font-size:.875rem}.lesson-row small{font-size:.75rem}.player-tools{justify-content:flex-start}.chat-compose{padding:12px;gap:8px}.chat-compose .button{padding:12px}.chat-messages{padding:16px}.chat-message{max-width:100%}.filters .field{min-width:130px;flex:1}.course-cover{aspect-ratio:2.5}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.loading:before{border-color:var(--red)}}

@media(min-width:901px){.collapsed #collapse-menu{display:flex!important;position:absolute;inset-inline-end:8px;top:63px;background:var(--surface);border:1px solid var(--line);z-index:4}.sidebar-brand{position:relative}}
/* A symbol sprite is metadata, and must not occupy the browser's default SVG box. */
svg.ui-sprite,svg.icon-sprite,svg.svg-sprite{position:absolute;width:0;height:0;overflow:hidden;pointer-events:none}

.brand-mark{direction:ltr}.bars>div{background:var(--red);border-radius:4px 4px 0 0;opacity:.85}

/* V8 readability, course focus and rewards */
.page-heading h1,.panel h2,.course-banner h1{text-wrap:balance}.page-heading>div>p,.panel>p,.course-banner p{max-width:68ch;line-height:2}.lesson-layout .rich-content,.lesson-layout .panel>p,.discussion-card p,.feedback-message{line-height:2.05}.lesson-layout>section{min-width:0}.video-stage{box-shadow:0 18px 50px #0002}.player-tools{position:sticky;bottom:10px;z-index:5;background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:blur(15px);border:1px solid var(--line);padding:10px;border-radius:13px}.lesson-side{scrollbar-gutter:stable}.lesson-side .chapter[open] summary{color:var(--red)}.lesson-row{min-height:54px}.lesson-row:focus-visible{outline:2px solid var(--red);outline-offset:-2px}.lesson-row.completed{background:color-mix(in srgb,var(--green) 6%,transparent)}.gift-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.gift-card{border:1px solid var(--line);border-radius:18px;background:var(--surface);overflow:hidden;display:flex;flex-direction:column}.gift-card>img{width:100%;aspect-ratio:1.7;object-fit:cover}.gift-card>div{padding:22px;display:flex;flex-direction:column;gap:14px;flex:1}.gift-card p{line-height:1.9;color:var(--muted);flex:1}.gift-card strong{color:var(--red)}.gift-card .button{width:100%}.xp-value small{font-family:Vazir,system-ui;white-space:nowrap}.xp-mini{font-family:Vazir,system-ui}
@media(max-width:1050px){.gift-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:620px){.gift-grid{grid-template-columns:1fr}.player-tools{position:static}.lesson-layout .tabs{scrollbar-width:thin}}
/* Growth center */
.marketing-funnel{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin:20px 0}.marketing-funnel div{position:relative;display:grid;gap:6px;padding:15px 10px;border:1px solid var(--border);border-radius:12px;background:var(--surface-2);text-align:center}.marketing-funnel div:not(:last-child):after{content:"←";position:absolute;left:-9px;top:50%;z-index:2;transform:translateY(-50%);color:var(--muted)}.marketing-funnel strong{font-size:1.3rem}.seo-endpoints{display:grid;gap:9px}.seo-endpoints a{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:10px;padding:12px;border:1px solid var(--border);border-radius:12px;color:inherit;text-decoration:none}.seo-endpoints a:hover{border-color:var(--accent)}.seo-endpoints code{direction:ltr;color:var(--muted);font-size:.72rem}.admin-workspace textarea[dir=ltr]{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.78rem;line-height:1.65}
.toolbar-group{display:contents}.editor-status{display:flex;gap:14px;flex-wrap:wrap;justify-content:space-between;color:var(--muted);font-size:.75rem;margin-top:8px}.editor-writing-panel,.editor-sidebar,.publication-panel{min-width:0}.publication-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px}.publication-actions>[data-article-save]{grid-column:1/-1}.publication-actions .button{width:100%;min-width:0;white-space:normal}.article-save-feedback{min-height:22px;margin:0;padding:8px 10px;border-radius:8px;color:var(--muted);font-size:.75rem;line-height:1.7}.article-save-feedback:empty{display:none}.article-save-feedback[data-state=saving]{background:var(--surface2)}.article-save-feedback[data-state=success]{background:color-mix(in srgb,var(--green) 12%,var(--surface));color:var(--green)}.article-save-feedback[data-state=error]{background:var(--red-soft);color:var(--red);white-space:pre-wrap}.publication-hint{margin:0;padding:10px 12px;border:1px solid var(--line);border-radius:9px;background:var(--bg);color:var(--muted);font-size:.75rem;line-height:1.8}.editor-media{margin-top:28px;padding-top:24px;border-top:1px solid var(--line)}.media-upload{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;padding:16px;border:1px dashed var(--line);border-radius:14px;background:var(--bg)}.media-upload button{align-self:end}.media-library{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:16px}.media-card{display:grid;grid-template-columns:112px minmax(0,1fr);gap:13px;border:1px solid var(--line);border-radius:13px;padding:10px;min-width:0}.media-card img,.media-video-mark{width:112px;aspect-ratio:1.45;object-fit:cover;border-radius:8px;background:#171b24;color:#fff;display:grid;place-items:center;font:700 .72rem monospace}.media-card>div{display:grid;align-content:center;gap:6px;min-width:0}.media-card small{color:var(--muted);overflow-wrap:anywhere}.media-card .row{gap:5px;flex-wrap:wrap}.media-card .button{padding:6px 8px;font-size:.7rem}.editor-callout{padding:15px;border-radius:11px;background:var(--surface2);color:var(--muted)}.seo-audit{position:relative;min-width:0;overflow:hidden}.seo-audit-summary{display:flex;align-items:center;justify-content:space-between;gap:14px}.seo-audit-summary strong{display:block;font-size:2rem;margin-top:5px}.seo-audit-summary strong[data-grade=good]{color:var(--green)}.seo-audit-summary strong[data-grade=medium]{color:#bd7400}.seo-audit-summary strong[data-grade=poor]{color:var(--red)}.seo-audit-toggle{display:inline-flex;align-items:center;justify-content:center;min-width:108px;padding:8px 11px;border:1px solid var(--line);border-radius:999px;background:var(--surface2);color:var(--text);font-size:.72rem;white-space:nowrap}.seo-audit-toggle:hover,.seo-audit-toggle:focus-visible{border-color:var(--red);color:var(--red)}.seo-audit-body{margin-top:16px;padding-top:16px;border-top:1px solid var(--line)}.seo-audit-body[hidden]{display:none!important}.seo-audit.is-collapsed{padding-block:15px}.seo-audit-body>p{font-size:.75rem;color:var(--muted)}.seo-audit ul{display:grid;gap:7px;padding:0;list-style:none;margin:16px 0}.seo-audit li{display:flex;align-items:flex-start;gap:8px;font-size:.75rem;line-height:1.7}.seo-audit li span{display:grid;place-items:center;width:20px;height:20px;border-radius:50%;background:var(--surface2);flex:0 0 20px}.seo-audit li.pass span{background:color-mix(in srgb,var(--green) 15%,var(--surface));color:var(--green)}.seo-audit li.fail{color:var(--muted)}.serp-preview{direction:rtl;border:1px solid var(--line);border-radius:11px;padding:13px;background:var(--bg);min-width:0;overflow:hidden}.serp-preview small{display:block;color:var(--green);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.serp-preview h3{color:#2764c7;font-size:1rem;margin:7px 0;overflow-wrap:anywhere}.serp-preview p{font-size:.75rem;line-height:1.8;margin:0;overflow-wrap:anywhere}.field-hints{display:flex;justify-content:space-between;color:var(--muted);font-size:.7rem;margin-top:8px}.pro-check{display:grid;grid-template-columns:1fr auto;align-items:center}.pro-check input{grid-column:2}.danger{color:var(--red)!important}
@media(max-width:700px){.marketing-funnel{grid-template-columns:1fr}.marketing-funnel div:not(:last-child):after{content:"↓";left:50%;top:auto;bottom:-13px;transform:translateX(-50%)}.seo-endpoints a{grid-template-columns:1fr auto}.seo-endpoints code{grid-column:1/-1;overflow-wrap:anywhere}}
@media(max-width:700px){.media-upload,.media-library{grid-template-columns:1fr}.media-card{grid-template-columns:82px minmax(0,1fr)}.media-card img,.media-video-mark{width:82px}.publication-actions{grid-template-columns:1fr}.publication-actions>[data-article-save]{grid-column:auto}.seo-audit-summary{align-items:flex-start}.seo-audit-toggle{min-width:auto}.editor-toolbar{gap:5px}.editor-toolbar button{flex:1 1 auto}}
.skip-link:focus-visible{top:-100px}.keyboard-navigation .skip-link:focus{top:10px}
.publication-hint{margin-top:-8px;padding:10px 12px;border-radius:10px;background:var(--surface2);color:var(--muted);font-size:.75rem;line-height:1.8}
.leaderboard-picker{margin-top:8px;border-color:color-mix(in srgb,var(--red) 24%,var(--line));background:color-mix(in srgb,var(--red-soft) 35%,var(--surface))}.leaderboard-candidates{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;max-height:390px;overflow:auto;padding:4px;scrollbar-gutter:stable}.leaderboard-candidate{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:10px;padding:11px 12px;border:1px solid var(--line);border-radius:11px;background:var(--surface);cursor:pointer}.leaderboard-candidate:has(input:checked){border-color:var(--red);background:var(--red-soft)}.leaderboard-candidate:has(input:disabled){opacity:.62;cursor:not-allowed}.leaderboard-candidate input{width:19px;height:19px;accent-color:var(--red)}.leaderboard-candidate span{display:grid;min-width:0}.leaderboard-candidate strong,.leaderboard-candidate small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.leaderboard-candidate small{color:var(--muted)}.leaderboard-candidate em{font-style:normal;font-size:.68rem;color:var(--muted);white-space:nowrap}@media(max-width:700px){.leaderboard-candidates{grid-template-columns:1fr}.leaderboard-candidate{grid-template-columns:auto minmax(0,1fr)}.leaderboard-candidate em{grid-column:2}}
.video-stage video::cue{font-family:Vazir,system-ui,sans-serif;font-size:1.05rem;line-height:1.8;color:#fff;background:#08090cdd;text-shadow:0 1px 3px #000}
.subtitle-summary{display:grid;gap:3px;margin-top:6px;color:var(--green);font-size:.72rem}.subtitle-summary small{max-width:42ch;color:var(--red);white-space:normal}.subtitle-state{display:inline-flex;width:max-content;padding:4px 8px;border-radius:999px;background:var(--surface2);color:var(--muted);font-size:.72rem}.subtitle-state.ready{background:color-mix(in srgb,var(--green) 14%,var(--surface));color:var(--green)}.subtitle-state.queued,.subtitle-state.processing{background:color-mix(in srgb,#d58b00 14%,var(--surface));color:#9c6500}.subtitle-state.failed{background:var(--red-soft);color:var(--red)}.subtitle-error{display:block;max-width:58ch;color:var(--red);white-space:normal;line-height:1.8}