*{box-sizing:border-box}
html{min-height:100%}
body{margin:0;font-family:var(--ru-font);background:var(--ru-bg);color:var(--ru-text)}
body:not(.lab-suite-page){min-height:100vh;display:flex;flex-direction:column}
a{color:inherit}
ru-header,ru-footer{display:block;width:100%;flex:0 0 auto}
ru-header{position:sticky;top:0;z-index:50}
body:not(.lab-suite-page)>ru-footer{margin-top:auto}
.ru-app-shell{min-height:100vh;display:flex;flex-direction:column}
.ru-topbar{
  position:relative;top:auto;z-index:1;display:grid;grid-template-columns:auto 1fr auto;
  align-items:center;gap:24px;min-height:70px;padding:10px 28px;
  background:color-mix(in srgb,var(--ru-surface) 94%,transparent);
  border-bottom:1px solid var(--ru-border);backdrop-filter:blur(18px)
}
.ru-brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:800}
.ru-brand-mark{width:38px;height:38px;display:grid;place-items:center;border-radius:12px;background:var(--ru-primary);color:#fff;font-size:13px}
.ru-topnav{display:flex;justify-content:center;gap:24px}
.ru-topnav a{position:relative;padding:10px 0;text-decoration:none;color:var(--ru-muted);font-weight:700;font-size:14px}
.ru-topnav a.active,.ru-topnav a:hover{color:var(--ru-text)}
.ru-topnav a.active::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;border-radius:2px;background:var(--ru-primary)}
.ru-top-actions{display:flex;gap:10px;align-items:center}
.ru-menu-btn{display:none}
.ru-icon-btn,.ru-workspace-btn{border:1px solid var(--ru-border);background:var(--ru-surface);color:var(--ru-text);border-radius:11px;min-height:38px}
.ru-icon-btn{width:38px;display:grid;place-items:center;cursor:pointer}
.ru-workspace-btn{padding:0 15px;display:flex;align-items:center;text-decoration:none;font-weight:800;background:var(--ru-primary);color:#fff;border-color:var(--ru-primary)}
.ru-page-grid{
  width:min(var(--ru-container),calc(100% - 32px));margin:0 auto;
  display:grid;grid-template-columns:230px minmax(0,1fr) 300px;gap:22px;padding:24px 0 60px;align-items:start
}
.ru-sidebar,.ru-right-panel{position:sticky;top:94px}
.ru-sidebar-card,.ru-panel-card,.ru-content-card{
  background:var(--ru-surface);border:1px solid var(--ru-border);border-radius:var(--ru-radius-md);box-shadow:var(--ru-shadow-sm)
}
.ru-sidebar-card{padding:14px}
.ru-sidebar-title{display:flex;align-items:center;gap:10px;padding:10px 10px 14px;font-size:14px;font-weight:800;border-bottom:1px solid var(--ru-border);margin-bottom:10px}
.ru-sidebar-nav{display:grid;gap:4px}
.ru-sidebar-nav a{display:flex;align-items:center;gap:10px;padding:10px 11px;border-radius:10px;text-decoration:none;color:var(--ru-muted);font-weight:700;font-size:14px}
.ru-sidebar-nav a:hover,.ru-sidebar-nav a.active{background:var(--ru-primary-soft);color:var(--ru-primary)}
.ru-sidebar-section-label{padding:14px 11px 6px;color:var(--ru-muted);font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.12em}
.ru-main{min-width:0}
.ru-breadcrumb{display:flex;gap:7px;color:var(--ru-muted);font-size:13px;margin:4px 0 18px}
.ru-hero{
  position:relative;overflow:hidden;display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:26px;align-items:center;
  min-height:270px;padding:34px;border-radius:var(--ru-radius-lg);
  background:linear-gradient(135deg,#0677c6 0%,#28a8dc 100%);color:#fff;box-shadow:var(--ru-shadow-md)
}
.ru-hero::after{content:"";position:absolute;width:260px;height:260px;border-radius:50%;right:-70px;top:-80px;background:rgba(255,255,255,.12)}
.ru-hero-copy{position:relative;z-index:2}
.ru-eyebrow{font-size:11px;text-transform:uppercase;letter-spacing:.13em;font-weight:900;opacity:.85}
.ru-hero h1{margin:10px 0 14px;font-size:clamp(38px,4.8vw,64px);line-height:1.02;letter-spacing:-.045em}
.ru-hero p{margin:0;max-width:720px;font-size:17px;line-height:1.65;opacity:.95}
.ru-hero-visual{position:relative;z-index:2;min-height:190px;display:grid;place-items:center}
.ru-orbit{width:180px;height:180px;border:2px solid rgba(255,255,255,.42);border-radius:50%;position:relative}
.ru-orbit::before,.ru-orbit::after{content:"";position:absolute;border-radius:50%;border:1px solid rgba(255,255,255,.35)}
.ru-orbit::before{inset:20px}.ru-orbit::after{inset:48px}
.ru-orbit-core{position:absolute;inset:64px;border-radius:16px;background:#fff;color:var(--ru-primary);display:grid;place-items:center;font-weight:900;box-shadow:0 12px 30px rgba(0,0,0,.18)}
.ru-section-head{display:flex;justify-content:space-between;align-items:end;gap:18px;margin:34px 0 16px}
.ru-section-head h2{margin:0;font-size:28px;letter-spacing:-.025em}
.ru-section-head p{margin:4px 0 0;color:var(--ru-muted)}
.ru-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.ru-card{padding:20px;background:var(--ru-surface);border:1px solid var(--ru-border);border-radius:var(--ru-radius-md);box-shadow:var(--ru-shadow-sm);transition:.18s ease}
.ru-card:hover{transform:translateY(-4px);box-shadow:var(--ru-shadow-md);border-color:color-mix(in srgb,var(--ru-primary) 40%,var(--ru-border))}
.ru-card-icon{width:44px;height:44px;display:grid;place-items:center;border-radius:13px;background:var(--ru-primary-soft);color:var(--ru-primary);font-weight:900}
.ru-card h3{margin:16px 0 8px;font-size:20px}
.ru-card p{margin:0;color:var(--ru-muted);line-height:1.6}
.ru-meta{display:flex;gap:12px;flex-wrap:wrap;margin-top:16px;color:var(--ru-muted);font-size:13px}
.ru-card-link{display:inline-flex;margin-top:18px;color:var(--ru-primary);font-weight:800;text-decoration:none}
.ru-path-card{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center;padding:20px}
.ru-path-progress{height:8px;background:var(--ru-surface-soft);border-radius:999px;overflow:hidden;margin-top:12px}
.ru-path-progress span{display:block;height:100%;background:var(--ru-primary);border-radius:inherit}
.ru-right-panel{display:grid;gap:16px}
.ru-panel-card{padding:18px}
.ru-panel-card h3{margin:0 0 14px;font-size:15px}
.ru-progress-ring{width:112px;height:112px;border-radius:50%;margin:4px auto 14px;display:grid;place-items:center;background:conic-gradient(var(--ru-primary) var(--progress,0%),var(--ru-surface-soft) 0)}
.ru-progress-ring::before{content:"";width:82px;height:82px;border-radius:50%;background:var(--ru-surface);position:absolute}
.ru-progress-ring strong{position:relative;font-size:22px}
.ru-stat-list{display:grid;gap:10px}
.ru-stat-row{display:flex;justify-content:space-between;gap:14px;color:var(--ru-muted);font-size:14px}
.ru-stat-row strong{color:var(--ru-text)}
.ru-quick-actions{display:grid;gap:8px}
.ru-quick-actions a{padding:11px 12px;border-radius:10px;background:var(--ru-surface-soft);text-decoration:none;font-weight:700;font-size:14px}
.ru-quick-actions a:hover{background:var(--ru-primary-soft);color:var(--ru-primary)}
ru-footer{margin-top:auto}
ru-footer>footer.ru-footer{display:block!important;width:100%;margin:0;padding:20px 28px;border-top:1px solid var(--ru-border);background:var(--ru-surface);color:var(--ru-text);grid-template-columns:none;gap:0}
.ru-footer-inner{width:min(var(--ru-container),100%);margin:0 auto;display:grid;grid-template-columns:1.3fr repeat(3,1fr);gap:24px}
.ru-footer h4{margin:0 0 10px}.ru-footer p,.ru-footer a{color:var(--ru-muted);font-size:14px;line-height:1.7;text-decoration:none;display:block}
@media(max-width:1150px){
  .ru-page-grid{grid-template-columns:210px minmax(0,1fr)}
  .ru-right-panel{grid-column:1/-1;position:static;grid-template-columns:repeat(3,1fr)}
}
@media(max-width:860px){
  .ru-topbar{grid-template-columns:auto auto auto;gap:10px}.ru-menu-btn{display:grid}.ru-top-actions{justify-self:end}
  .ru-topnav{display:none;position:absolute;top:70px;left:12px;right:12px;padding:12px;background:var(--ru-surface);border:1px solid var(--ru-border);border-radius:14px;box-shadow:var(--ru-shadow-md);flex-direction:column;gap:2px}
  .ru-topnav.open{display:flex}.ru-topnav a{padding:11px 12px;border-radius:9px}.ru-topnav a.active::after{display:none}.ru-topnav a.active{background:var(--ru-primary-soft);color:var(--ru-primary)}
  .ru-page-grid{grid-template-columns:1fr}.ru-sidebar{position:static}.ru-sidebar-card{overflow:auto}.ru-sidebar-title{display:none}.ru-sidebar-nav{display:flex;min-width:max-content}
  .ru-sidebar-section-label{display:none}.ru-hero{grid-template-columns:1fr}.ru-hero-visual{display:none}.ru-grid{grid-template-columns:1fr}
  .ru-right-panel{grid-template-columns:1fr}.ru-footer-inner{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .ru-topbar{padding:10px 14px}.ru-workspace-btn{display:none}.ru-page-grid{width:min(100% - 20px,var(--ru-container));padding-top:14px}
  .ru-hero{padding:26px 22px}.ru-hero h1{font-size:40px}.ru-footer-inner{grid-template-columns:1fr}
}

/* Academy v1.2 — trasee extinse și conținut de aprofundare */
.academy-overview-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:28px 0 8px;padding:16px;background:var(--ru-surface);border:1px solid var(--ru-border);border-radius:var(--ru-radius-md);box-shadow:var(--ru-shadow-sm)}
.academy-overview-stats div{display:grid;gap:3px;text-align:center}.academy-overview-stats strong{font-size:28px;color:var(--ru-primary)}.academy-overview-stats span{font-size:12px;color:var(--ru-muted);font-weight:700}
.course-syllabus-head{display:flex;justify-content:space-between;gap:18px;align-items:end;margin-bottom:16px}.course-syllabus-head h2{margin:4px 0 5px}.course-syllabus-head p{margin:0;color:var(--ru-muted);line-height:1.6}.syllabus-count{white-space:nowrap;padding:8px 12px;border-radius:999px;background:var(--ru-primary-soft);color:var(--ru-primary);font-weight:800;font-size:13px}
.course-lesson-list{display:grid;gap:12px}.course-lesson-list .lesson-row{margin:0}.lesson-row.lesson-advanced{border-color:color-mix(in srgb,var(--ru-primary) 32%,var(--ru-border));background:linear-gradient(90deg,var(--ru-surface),color-mix(in srgb,var(--ru-primary-soft) 32%,var(--ru-surface)))}
.course-lab-callout{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-top:22px;padding:20px;border:1px solid color-mix(in srgb,var(--ru-primary) 38%,var(--ru-border));border-radius:var(--ru-radius-md);background:var(--ru-primary-soft)}.course-lab-callout h3{margin:5px 0}.course-lab-callout p{margin:0;color:var(--ru-muted);line-height:1.55}.course-lab-links{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:9px}.course-lab-links .button{margin-top:0}.course-lab-links .ghost{display:inline-flex;align-items:center;text-decoration:none}
@media(max-width:700px){.academy-overview-stats{grid-template-columns:repeat(2,1fr)}.course-syllabus-head,.course-lab-callout{display:grid;align-items:start}.course-lab-links{justify-content:start}}

/* Lecții extinse */
.rich-lesson-hero{min-height:360px}.rich-lesson-visual{min-height:220px;display:grid;place-items:center;align-content:center;gap:7px;border:1px solid rgba(255,255,255,.35);border-radius:24px;background:radial-gradient(circle at 50% 35%,rgba(255,255,255,.35),rgba(255,255,255,.08) 30%,transparent 31%),linear-gradient(145deg,rgba(255,255,255,.17),rgba(255,255,255,.04));box-shadow:inset 0 0 0 1px rgba(255,255,255,.08)}.rich-lesson-visual strong{font-size:90px;line-height:1;color:#fff;letter-spacing:-.08em}.rich-lesson-visual span{color:rgba(255,255,255,.82);font-weight:800;letter-spacing:.08em;text-transform:uppercase;font-size:12px}.rich-lesson-layout{grid-template-columns:230px minmax(0,820px)}.lesson-outline{display:grid;gap:6px}.lesson-outline h3{margin:0 0 7px}.rich-lesson-content{min-width:0}.lesson-rich-section{padding:9px 0 18px!important}.lesson-rich-section h2,.rich-example h2,.lesson-practice h2,.rich-quiz h2{margin-top:0}.lesson-rich-section p,.lesson-rich-section li,.rich-example p,.lesson-practice li,.lesson-practice p,.rich-quiz p{font-size:17px;line-height:1.75}.lesson-rich-section ul,.lesson-practice ol{padding-left:24px}.formula-box{display:grid;gap:7px;margin:18px 0;padding:16px 18px;border-left:4px solid var(--ru-primary);border-radius:0 14px 14px 0;background:var(--ru-primary-soft)}.formula-box span{font-size:11px;letter-spacing:.12em;font-weight:900;color:var(--ru-primary)}.formula-box code{font-size:17px;color:var(--ru-text);white-space:pre-wrap}.rich-example{margin-top:18px!important;border-color:color-mix(in srgb,var(--ru-primary) 45%,var(--ru-border))!important}.lesson-practice{margin:22px 0;padding:22px;border:1px solid color-mix(in srgb,var(--ru-primary) 42%,var(--ru-border));border-radius:var(--ru-radius-md);background:linear-gradient(135deg,var(--ru-primary-soft),var(--ru-surface))}.lesson-practice .eyebrow{color:var(--ru-primary)}.rich-quiz{margin-top:22px!important}.rich-quiz button{cursor:pointer}.rich-quiz .feedback{font-weight:800}.rich-lesson-page .ru-footer{margin-top:0}
@media(max-width:900px){.rich-lesson-layout{grid-template-columns:1fr}.rich-lesson-visual{min-height:150px}.rich-lesson-visual strong{font-size:64px}}


/* RadioUnivers v0.6.1.1 — visual and functional corrections */
.ru-hero{min-height:230px;padding:28px 32px}
.ru-hero h1{font-size:clamp(34px,4vw,50px);line-height:1.06;margin-top:8px}
.ru-footer{padding:20px 28px}
.ru-footer-inner{gap:18px;grid-template-columns:1.5fr .9fr .9fr 1.15fr}
.ru-footer h4{margin-bottom:7px;font-size:14px}
.ru-footer p,.ru-footer a{font-size:12px;line-height:1.45;margin:2px 0}
.ru-footer-inner>div:last-child{display:grid;grid-template-columns:1fr 1fr;column-gap:12px;align-content:start}
.ru-footer-inner>div:last-child h4{grid-column:1/-1}

/* Compact the classic footer; the legal information column no longer makes it excessively tall. */
.ru-global-footer,.professional-footer,footer.site-footer{padding-top:22px!important;padding-bottom:22px!important;gap:18px!important}
.footer-legal-links{display:grid!important;grid-template-columns:1fr 1fr;gap:3px 12px!important;align-content:start}
.footer-legal-links h3{grid-column:1/-1;margin-bottom:4px!important}
.ru-global-footer a,.professional-footer a,footer.site-footer a{margin:2px!important;font-size:12px!important;line-height:1.4!important}

/* Lab Studio: smaller title, compact information bar and stable vertical layout. */
.lab-context-bar{padding-top:9px!important;padding-bottom:9px!important;min-height:68px}
.lab-context-title h1{font-size:18px!important;line-height:1.12!important;margin:1px 0 2px!important}
.lab-context-title p{font-size:11px!important;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:720px}
.lab-context-meta>span{min-width:68px!important;padding:6px 9px!important}
.lab-app{grid-template-rows:70px auto 54px minmax(360px,1fr) 78px!important}
.lab-main{min-height:360px!important}
.lab-bottom{height:78px!important;min-height:78px!important;grid-template-rows:34px minmax(0,1fr)!important}
.lab-bottom.collapsed{height:34px!important;min-height:34px!important}
.lab-tabbar{padding:3px 8px!important}
.lab-tabbar button{padding:5px 9px!important;font-size:9px!important}
.lab-output{padding:6px 11px!important;font-size:10px!important;line-height:1.45!important}
.empty-inspector{min-height:130px!important;padding:16px!important}
.lab-sidebar,.lab-inspector{padding:12px!important}
.lab-components{gap:6px!important}
.lab-component{min-height:58px!important;padding:7px!important}

@media(max-width:980px){
 .ru-footer-inner{grid-template-columns:1fr 1fr}
 .lab-app{grid-template-rows:70px auto auto minmax(600px,1fr) 72px!important}
}
@media(max-width:560px){
 .ru-hero h1{font-size:34px}
 .ru-footer-inner{grid-template-columns:1fr}
 .ru-footer-inner>div:last-child{grid-template-columns:1fr 1fr}
}
/* RadioUnivers light professional Academy hero */
html[data-theme="light"] .ru-hero {
  background:#f7fafc;
  color:var(--ru-text);
  border:1px solid var(--ru-border);
  box-shadow:var(--ru-shadow-sm);
}
html[data-theme="light"] .ru-hero::after {
  background:rgba(8,121,201,.07);
}
html[data-theme="light"] .ru-hero .ru-eyebrow {
  color:var(--ru-primary);
  opacity:1;
}
html[data-theme="light"] .ru-hero p {
  color:var(--ru-muted);
  opacity:1;
}
html[data-theme="light"] .ru-hero .ru-orbit {
  border-color:rgba(8,121,201,.35);
}

/* Vizitatori: indicator discret prezent în footerul comun al tuturor paginilor. */
.ru-visitor-strip{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:12px;width:min(var(--ru-container),100%);margin:14px auto 0;padding-top:11px;border-top:1px solid var(--ru-border);color:var(--ru-muted);font-size:12px}
.ru-visitor-strip strong{color:var(--ru-text);font-variant-numeric:tabular-nums}
.ru-visitor-live{display:inline-flex;align-items:center;gap:7px}
.ru-visitor-live i{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--ru-success);box-shadow:0 0 0 4px color-mix(in srgb,var(--ru-success) 16%,transparent);font-style:normal}
.ru-visitor-strip[data-ru-status="offline"] .ru-visitor-live i{background:var(--ru-muted);box-shadow:none}
.ru-visitor-strip[data-ru-status="offline"] strong{color:var(--ru-muted)}
@media(max-width:560px){.ru-visitor-strip{justify-content:flex-start;gap:9px;font-size:11px}}