:root{--font-sans:"Manrope", "Avenir Next", "Segoe UI", sans-serif;--color-primary:#1c2e9e;--color-primary-dark:#112379;--color-primary-light:#4d68e2;--color-secondary:#2e55c7;--color-accent-bright:#3a7bff;--color-bg-deep:#0e1b4d;--color-ink-900:#0f172a;--color-ink-700:#334155;--color-ink-500:#64748b;--color-bg:#f3f6fd;--color-card:#fff;--color-border:#d4dcf0;--color-brand:var(--color-primary);--color-brand-strong:var(--color-primary-dark);--color-accent:var(--color-accent-bright);--rgb-brand:28, 46, 158;--rgb-accent:58, 123, 255;--rgb-secondary:46, 85, 199;--color-danger:#ef4444;--color-success:#10b981;--color-warning:#f59e0b;--shadow-card:0 12px 32px rgba(var(--rgb-brand), .12);font-family:var(--font-sans);color:var(--color-ink-900);background:radial-gradient(1200px 640px at 5% -15%, rgba(var(--rgb-brand), .14), transparent 58%), radial-gradient(900px 520px at 95% 5%, rgba(var(--rgb-accent), .12), transparent 56%), var(--color-bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}body{margin:0}#app,.app-shell{min-height:100vh}.app-main{max-width:1120px;margin:0 auto;padding:28px 20px 52px}.app-header{z-index:20;border-bottom:1px solid rgba(var(--rgb-brand), .12);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#ffffffe0;justify-content:space-between;align-items:center;gap:16px;padding:12px 20px;display:flex;position:sticky;top:0}.app-header__left{align-items:center;gap:10px;display:flex}.app-title{letter-spacing:.01em;margin:0;font-size:22px}.app-subtitle{color:var(--color-ink-500);background:rgba(var(--rgb-brand), .09);border:1px solid rgba(var(--rgb-brand), .18);border-radius:999px;padding:4px 10px;font-size:14px;font-weight:700}.app-header__nav{align-items:center;gap:10px;display:flex}.app-header__nav a{color:var(--color-ink-700);border:1px solid #0000;border-radius:999px;padding:8px 12px;font-weight:700;text-decoration:none;transition:background-color .16s,border-color .16s,color .16s}.app-header__nav a:hover{background:rgba(var(--rgb-brand), .08)}.app-header__nav a.active{color:var(--color-brand-strong);border-color:rgba(var(--rgb-brand), .35);background:rgba(var(--rgb-brand), .12)}.page{flex-direction:column;gap:18px;display:flex}.page--auth{justify-content:center;align-items:center;min-height:calc(100vh - 130px)}.page-header{justify-content:space-between;align-items:center;gap:12px;display:flex}.page-header h2{margin:0}.section{flex-direction:column;gap:12px;display:flex}.section__head h3{margin:0}.section__head p{margin:5px 0 0}.card{background:var(--color-card);border:1px solid var(--color-border);box-shadow:var(--shadow-card);border-radius:16px;padding:18px}.empty-state{flex-direction:column;align-items:flex-start;gap:8px;display:flex}.empty-state h4{margin:0}.card h2,.card h3{margin:0 0 8px}.auth-card{flex-direction:column;gap:10px;width:100%;max-width:480px;display:flex}.overview-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;display:grid}.overview-card{background:linear-gradient(135deg, rgba(var(--rgb-brand), .12), #fffffff0);border:1px solid rgba(var(--rgb-brand), .22);border-radius:14px;padding:14px}.overview-card__label{color:var(--color-ink-500);margin:0;font-size:13px;font-weight:700}.overview-card__value{margin:6px 0 0;font-size:24px;font-weight:800;line-height:1}.card-list{grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px;display:grid}.course-card{flex-direction:column;gap:8px;padding:0;transition:transform .16s,box-shadow .16s,border-color .16s;display:flex;overflow:hidden}.course-card:hover{box-shadow:0 16px 30px rgba(var(--rgb-brand), .18);border-color:rgba(var(--rgb-brand), .32);transform:translateY(-3px)}.course-cover{aspect-ratio:1;border-bottom:1px solid var(--color-border);background:radial-gradient(620px 250px at 20% 10%, rgba(var(--rgb-brand), .5), transparent 55%), radial-gradient(520px 230px at 90% 30%, rgba(var(--rgb-accent), .35), transparent 60%), linear-gradient(145deg, var(--color-primary-dark), var(--color-primary));width:100%;position:relative}.course-cover__img{object-fit:cover;width:100%;height:100%;transition:transform .24s;display:block}.course-card:hover .course-cover__img{transform:scale(1.03)}.course-cover__placeholder{justify-content:flex-start;align-items:flex-end;width:100%;height:100%;padding:12px;display:flex}.course-cover__badge{color:#fffffff5;letter-spacing:.02em;text-transform:uppercase;background:#ffffff24;border:1px solid #ffffff52;border-radius:999px;align-items:center;gap:8px;padding:6px 10px;font-size:12px;font-weight:800;display:inline-flex}.course-card__title{-webkit-line-clamp:2;-webkit-box-orient:vertical;min-height:2.5em;margin:0 0 6px;font-size:17px;line-height:1.25;display:-webkit-box;overflow:hidden}.course-card__body{flex-direction:column;flex:1;gap:6px;min-height:132px;padding:14px 16px 6px;display:flex}.course-card__desc{-webkit-line-clamp:3;-webkit-box-orient:vertical;min-height:4.2em;line-height:1.4;display:-webkit-box;overflow:hidden}.course-card__desc--empty{-webkit-user-select:none;user-select:none;color:#0000}.course-actions{gap:10px;margin-top:auto;padding:0 16px 16px;display:flex}.courses-empty-shell{justify-content:center;align-items:center;min-height:180px;display:flex}.skeleton-block{background:linear-gradient(90deg,#cfdde475 20%,#e1eaeee6 38%,#cfdde475 56%) 0 0/250% 100%;border-radius:14px;animation:1.2s ease-in-out infinite skeleton-shimmer}.skeleton-block--short{min-height:84px}.skeleton-card{min-height:300px}label{font-size:14px;font-weight:700}input{background:#fcfefe;border:1px solid #c5d0d8;border-radius:10px;width:100%;padding:11px 12px;font-size:16px}input:focus{outline:2px solid rgba(var(--rgb-brand), .28);border-color:var(--color-brand)}.checkbox-list{flex-direction:column;gap:10px;margin-top:8px;display:flex}.checkbox-row{color:var(--color-ink-900);align-items:flex-start;gap:10px;font-size:14px;font-weight:600;display:flex}.consent-link{color:var(--color-brand-strong);text-underline-offset:2px;text-decoration:underline;text-decoration-thickness:1px}.checkbox-row input[type=checkbox]{width:18px;height:18px;margin-top:2px}button{cursor:pointer;background:var(--color-brand);color:#fff;border:0;border-radius:10px;padding:10px 14px;font-weight:700;transition:transform .12s,filter .12s}button:hover:not(:disabled){filter:brightness(1.06);transform:translateY(-1px)}button.secondary{color:#fff;background:#3d4d63}button.accent{background:var(--color-accent)}button:disabled{opacity:.6;cursor:not-allowed}.logout-button{background:var(--color-danger)}.muted{color:var(--color-ink-500);margin:0}.error{color:var(--color-danger);margin:0}.success{color:var(--color-success);margin:0}.back-link{width:fit-content;color:var(--color-brand-strong);border-bottom:1px dashed rgba(var(--rgb-brand), .45);font-weight:700;text-decoration:none}.course-detail-head{flex-direction:column;gap:14px;display:flex}.course-kpis{flex-wrap:wrap;gap:10px;display:flex}.lesson-list{flex-direction:column;gap:10px;margin:0;padding:0;list-style:none;display:flex}.lesson-row{border:1px solid var(--color-border);background:linear-gradient(145deg,#f5f8ff,#fff);border-radius:12px;grid-template-columns:1fr;gap:10px;padding:12px;display:grid}.lesson-row--locked{border-left:4px solid #f59e0b}.lesson-title{flex-wrap:wrap;align-items:baseline;gap:10px;display:flex}.lesson-meta{flex-wrap:wrap;align-items:center;gap:8px;margin-top:8px;display:flex}.lesson-open{color:var(--color-brand-strong);border:1px solid rgba(var(--rgb-brand), .38);background:rgba(var(--rgb-brand), .08);border-radius:999px;margin-left:auto;padding:6px 12px;font-size:14px;font-weight:700;text-decoration:none}.lesson-open:hover{background:rgba(var(--rgb-brand), .14)}.pill{color:#4b5563;white-space:nowrap;background:#fff;border:1px solid #d1d5db;border-radius:20px;padding:4px 9px;font-size:12px}.pill--warn{color:#b45309;background:#fff7ed;border-color:#fcd089}.pill--info{color:var(--color-primary-dark);background:#e8edfc;border-color:#b8c5f0}.pill--muted{color:#60717f;border-color:#d8e0e6}.pill--ok{color:#047857;background:#ecfdf5;border-color:#a7f3d0}.price{margin:10px 0;font-size:20px;font-weight:700}@keyframes skeleton-shimmer{0%{background-position:100% 0}to{background-position:0 0}}@media (width<=820px){.app-header{flex-wrap:wrap;padding:10px 12px}.app-header__nav{width:100%;padding-bottom:2px;overflow-x:auto}.overview-grid{grid-template-columns:1fr}}@media (width<=640px){.app-main{padding:18px 12px 36px}.card-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.course-card__body{min-height:124px;padding:12px 12px 6px}.course-actions{padding:0 12px 12px}.course-card:hover{box-shadow:var(--shadow-card);border-color:var(--color-border);transform:none}.page-header{flex-direction:column;align-items:flex-start}}