@import"https://fonts.googleapis.com/css2?family=Baloo+2:wght@600;700;800&family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap";:root{--paper: #F7F6FC;--paper-card: #FFFFFF;--ink: #1F1B3A;--text-mid: #5C577A;--text-lo: #8D89AA;--line: #E7E4F5;--line-strong: #D2CCEA;--indigo: #5B4FE9;--indigo-2: #7B6EF6;--indigo-chip: #EDEBFF;--indigo-ink: #4636C9;--grass: #1FB573;--grass-2: #38D18C;--grass-chip: #DFFBEE;--grass-ink: #0E8A57;--sun: #F5A623;--sun-2: #FFC861;--sun-chip: #FFF3DA;--sun-ink: #9A6300;--bubble: #FF4FA1;--bubble-2: #FF7EC0;--bubble-chip: #FFE4F1;--bubble-ink: #C6206E;--coral: #FF6B4A;--coral-2: #FF8F70;--coral-chip: #FFE7E0;--coral-ink: #C7401F;--sky: #1CA7E0;--sky-2: #52C6EF;--sky-chip: #E1F5FC;--sky-ink: #0C7CA5;--crimson: #D14343;--crimson-2: #E97575;--crimson-chip: #FBE4E4;--crimson-ink: #9E2626;--radius-sm: 10px;--radius-md: 16px;--radius-lg: 26px;--font-display: "Baloo 2", sans-serif;--font-body: "Inter", sans-serif;--font-mono: "JetBrains Mono", monospace}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font-body);-webkit-font-smoothing:antialiased}h1,h2,h3{font-family:var(--font-display);font-weight:700;margin:0;letter-spacing:-.01em}button,.vl-class-card,.vl-content-card,.vl-lesson-row,.vl-nav-btn,.vl-category-tab{cursor:pointer}button:not(.vl-nav-btn):not(.vl-back):not(.vl-icon-btn){transition:transform .15s ease,box-shadow .15s ease,background .15s ease}.vl-btn{height:42px;padding:0 18px;border-radius:999px;border:1.5px solid var(--line-strong);background:var(--paper-card);color:var(--ink);cursor:pointer;font-weight:500;transition:transform .12s ease,box-shadow .15s ease,background .15s ease}.vl-btn:hover{transform:translateY(-1px);box-shadow:0 4px 14px #1f1b3a14}.vl-btn:active{transform:translateY(0) scale(.97)}.vl-btn:disabled{opacity:.6;cursor:default;transform:none;box-shadow:none}.vl-btn-primary{background:linear-gradient(135deg,var(--sky),var(--crimson));border-color:transparent;color:#fff;box-shadow:0 6px 18px #1ca7e059;height:50px;font-weight:600}.vl-btn-primary:hover{box-shadow:0 10px 26px #d1434373;transform:translateY(-2px)}.vl-btn-block{width:100%}.vl-input,.vl-select{height:52px;width:100%;padding:0 16px;border-radius:12px;border:1.5px solid var(--line-strong);background:var(--paper-card);color:var(--ink);outline:none;transition:border-color .15s ease,box-shadow .15s ease}.vl-input:focus,.vl-select:focus{border-color:var(--sky);box-shadow:0 0 0 4px var(--sky-chip)}.vl-label{font-size:13px;color:var(--text-mid);margin-bottom:6px;display:block;font-weight:500}.vl-card{background:var(--paper-card);border:1px solid var(--line);border-radius:var(--radius-md);box-shadow:0 2px 10px #1f1b3a0a}.vl-ring{border-radius:999px;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:inset 0 0 0 1px #ffffff80}.vl-badge{display:inline-flex;align-items:center;font-size:11px;font-weight:600;padding:3px 10px;border-radius:999px;background:var(--grass-chip);color:var(--grass-ink)}.vl-pulse-dot{display:inline-block;width:8px;height:8px;border-radius:999px;background:var(--bubble);margin-left:6px;animation:vlPulse 1.6s ease-in-out infinite}@keyframes vlPulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(1.4)}}.vl-screen-enter{animation:vlEnter .36s cubic-bezier(.2,.8,.2,1)}@keyframes vlEnter{0%{opacity:0;transform:translateY(10px) scale(.99)}to{opacity:1;transform:translateY(0) scale(1)}}@media (prefers-reduced-motion: reduce){.vl-screen-enter{animation:none}}.vl-auth-shell{position:relative;min-height:580px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-lg);padding:2rem;overflow:hidden;background:linear-gradient(165deg,#0a2e45,#0f5c82 40%,#1ca7e0 72%,#f5a623)}.vl-blob{position:absolute;border-radius:50%;filter:blur(60px);opacity:.32;pointer-events:none;transition:transform .3s ease-out}.vl-blob-1{width:340px;height:340px;background:var(--sky-2);top:-80px;left:-60px;animation:vlDrift1 14s ease-in-out infinite}.vl-blob-2{width:300px;height:300px;background:var(--crimson);bottom:-80px;right:-60px;animation:vlDrift2 16s ease-in-out infinite}.vl-blob-3{width:240px;height:240px;background:var(--sun);bottom:30px;left:18%;animation:vlDrift3 12s ease-in-out infinite;opacity:.65}@keyframes vlDrift1{0%,to{margin:0}50%{margin:20px 0 0 30px}}@keyframes vlDrift2{0%,to{margin:0}50%{margin:-15px -25px 0 0}}@keyframes vlDrift3{0%,to{margin:0}50%{margin:-20px 0 0 15px}}@media (prefers-reduced-motion: reduce){.vl-blob-1,.vl-blob-2,.vl-blob-3{animation:none}}.vl-auth-box{position:relative;z-index:1;width:100%;max-width:400px;background:#fffffffa;border-radius:var(--radius-md);padding:2.25rem;box-shadow:0 20px 60px #140a324d}.vl-back{all:unset;cursor:pointer;font-size:13px;color:var(--text-mid);display:flex;align-items:center;gap:4px;margin-bottom:1rem;font-weight:500;transition:color .15s ease}.vl-back:hover{color:var(--ink)}.vl-shell{border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;display:flex;min-height:580px;background:var(--paper);box-shadow:0 4px 24px #1f1b3a0f}.vl-sidebar{width:220px;flex-shrink:0;background:linear-gradient(175deg,#0a2e45,#0f5c82 55%,#1489b8);color:#fff;padding:1.4rem 0;display:flex;flex-direction:column}.vl-nav-btn{all:unset;cursor:pointer;display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:999px;font-size:13px;font-weight:500;color:#ffffffbf;margin:2px .65rem;transition:background .15s ease,color .15s ease}.vl-nav-btn:hover{background:#ffffff1a;color:#fff}.vl-nav-btn.active{background:#fffffff2;color:var(--sky-ink);font-weight:600}.vl-tab-btn{all:unset;cursor:pointer;padding:8px 4px;font-size:14px;font-weight:500;color:var(--text-mid);border-bottom:3px solid transparent;margin-right:22px;transition:color .15s ease,border-color .15s ease}.vl-tab-btn.active{color:var(--ink);border-bottom-color:var(--crimson)}.vl-class-card{cursor:pointer;border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--line);background:var(--paper-card);transition:transform .2s cubic-bezier(.2,.8,.2,1),box-shadow .2s ease}.vl-class-card:hover{transform:translateY(-5px) scale(1.015);box-shadow:0 14px 30px #1f1b3a24}.vl-class-card:active{transform:translateY(-2px) scale(.995)}.vl-study-card{cursor:pointer;transition:transform .2s cubic-bezier(.2,.8,.2,1),box-shadow .2s ease}.vl-study-card:hover{transform:translateY(-4px);box-shadow:0 12px 26px #1f1b3a1f}.vl-progress-track{width:100%;height:8px;border-radius:999px;background:var(--line);overflow:hidden}.vl-progress-fill{height:100%;border-radius:999px;transition:width .8s cubic-bezier(.2,.8,.2,1)}.vl-table{width:100%;border-collapse:collapse;font-size:13px}.vl-table th{text-align:left;padding:10px 12px;background:var(--sky-chip);color:var(--sky-ink);font-weight:700;font-family:var(--font-mono);font-size:11px;text-transform:uppercase;letter-spacing:.04em}.vl-table th:first-child{border-radius:10px 0 0 10px}.vl-table th:last-child{border-radius:0 10px 10px 0}.vl-table td{padding:17px 14px;border-bottom:1px solid var(--line);font-size:14px}.vl-table tr{transition:background .15s ease}.vl-table tbody tr:hover{background:var(--paper)}.vl-table-row-new{animation:vlRowIn .4s ease}@keyframes vlRowIn{0%{background:var(--sky-chip)}to{background:transparent}}.vl-modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#1f1b3a8c;display:flex;align-items:center;justify-content:center;padding:2rem;z-index:50;animation:vlFadeIn .2s ease}.vl-modal-box{width:100%;max-width:360px;background:var(--paper-card);border-radius:var(--radius-md);padding:1.5rem;box-shadow:0 20px 50px #140a324d;animation:vlModalIn .25s cubic-bezier(.2,.8,.2,1)}@keyframes vlFadeIn{0%{opacity:0}to{opacity:1}}@keyframes vlModalIn{0%{opacity:0;transform:translateY(14px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}.vl-stat{border-radius:var(--radius-md);padding:14px 16px;background:var(--paper-card);border:1px solid var(--line);border-top:4px solid var(--sky);transition:transform .15s ease}.vl-stat:hover{transform:translateY(-2px)}.vl-toast-wrap{position:fixed;bottom:20px;right:20px;display:flex;flex-direction:column;gap:8px;z-index:100}.vl-toast{display:flex;align-items:center;gap:10px;background:var(--ink);color:#fff;padding:10px 16px;border-radius:999px;font-size:13px;font-weight:500;box-shadow:0 10px 30px #140a3259;animation:vlToastIn .3s cubic-bezier(.2,.8,.2,1)}@keyframes vlToastIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.vl-notif-row{display:flex;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--paper-card);margin-bottom:8px;transition:transform .15s ease,opacity .2s ease}.vl-notif-row.leaving{opacity:0;transform:translate(30px)}.vl-lesson-row{display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--paper-card);cursor:pointer;transition:border-color .15s ease,transform .15s ease}.vl-lesson-row:hover{border-color:var(--sky);transform:translate(3px)}.vl-icon-tab{all:unset;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:6px;padding:10px 16px;border-radius:var(--radius-sm);font-size:12px;color:var(--text-mid);border-bottom:3px solid transparent;white-space:nowrap}.vl-icon-tab.active{color:var(--ink);border-bottom-color:var(--bubble);font-weight:600}.vl-icon-tab:hover{background:var(--paper)}.vl-content-card{border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden;background:var(--paper-card);transition:transform .15s ease,box-shadow .15s ease;cursor:pointer}.vl-content-card:hover{transform:translateY(-3px);box-shadow:0 10px 22px #1f1b3a1a}.vl-code-chip{font-family:var(--font-mono);font-size:12px;background:var(--paper);border:1px solid var(--line);padding:3px 10px;border-radius:999px;color:var(--text-mid)}.vl-filter-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px}.vl-filter-row .vl-select,.vl-filter-row .vl-input{width:180px}.vl-donut{position:relative;width:128px;height:128px;border-radius:50%;margin:0 auto}.vl-donut-hole{position:absolute;top:14px;right:14px;bottom:14px;left:14px;background:var(--paper-card);border-radius:50%;display:flex;align-items:center;justify-content:center}.vl-donut{width:128px;height:128px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:conic-gradient(var(--donut-color) calc(var(--donut-pct) * 1%),var(--line) 0)}.vl-donut-inner{width:96px;height:96px;border-radius:50%;background:var(--paper-card);display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:700;font-size:26px}.vl-chip-code{font-family:var(--font-mono);font-size:11px;font-weight:500;color:var(--text-mid);background:var(--paper);border:1px solid var(--line);padding:3px 9px;border-radius:999px}.vl-icon-btn{all:unset;cursor:pointer;width:30px;height:30px;border-radius:999px;display:flex;align-items:center;justify-content:center;color:var(--text-mid);transition:background .15s ease,color .15s ease}.vl-icon-btn:hover{background:var(--paper);color:var(--ink)}.vl-category-tabs{display:flex;gap:4px;overflow-x:auto;padding-bottom:4px}.vl-category-tab{all:unset;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 14px;border-radius:var(--radius-sm);font-size:11px;font-weight:500;color:var(--text-mid);white-space:nowrap;transition:background .15s ease,color .15s ease}.vl-category-tab:hover{background:var(--paper)}.vl-category-tab.active{background:var(--sky-chip);color:var(--sky-ink)}.vl-content-card{border:1px solid var(--line);border-radius:var(--radius-md);background:var(--paper-card);overflow:hidden;transition:transform .15s ease,box-shadow .15s ease}.vl-content-card:hover{transform:translateY(-3px);box-shadow:0 10px 24px #1f1b3a1a}.vl-content-thumb{height:84px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}.vl-license-active{color:var(--grass-ink);background:var(--grass-chip)}.vl-license-warn{color:var(--sun-ink);background:var(--sun-chip)}.vl-license-expired{color:var(--coral-ink);background:var(--coral-chip)}.vl-crumb{font-size:12px;color:var(--text-lo);margin-bottom:10px}.vl-crumb button{all:unset;cursor:pointer;color:var(--text-mid);font-weight:500}.vl-crumb button:hover{color:var(--sky-ink)}body{background-color:var(--paper);background-image:radial-gradient(circle,rgba(28,167,224,.09) 1.4px,transparent 1.4px);background-size:24px 24px}.vl-heading-grad{background:linear-gradient(135deg,var(--sky),var(--crimson));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.vl-nav-btn{position:relative}.vl-nav-btn .vl-nav-icon-chip{width:26px;height:26px;border-radius:8px;display:flex;align-items:center;justify-content:center;background:#ffffff1f;flex-shrink:0;transition:background .15s ease,transform .15s ease}.vl-nav-btn.active .vl-nav-icon-chip{transform:scale(1.06)}.vl-nav-btn:before{content:"";position:absolute;left:-.65rem;top:50%;transform:translateY(-50%);width:3px;height:0;border-radius:0 4px 4px 0;background:var(--sun);transition:height .15s ease}.vl-nav-btn.active:before{height:60%}.vl-stat-v2{border-radius:var(--radius-md);padding:14px 16px;background:var(--paper-card);border:1px solid var(--line);display:flex;align-items:center;gap:12px;transition:transform .15s ease,box-shadow .15s ease}.vl-stat-v2:hover{transform:translateY(-2px);box-shadow:0 10px 22px #1f1b3a14}.vl-empty-state{text-align:center;padding:2.4rem 1.5rem;border:1.5px dashed var(--line-strong);border-radius:var(--radius-md);background:#ffffff80}.vl-modal-box{position:relative;padding-top:1.75rem}.vl-modal-accent{position:absolute;top:0;left:0;right:0;height:6px;border-radius:var(--radius-md) var(--radius-md) 0 0}.vl-category-tab .vl-cat-icon-chip{width:30px;height:30px;border-radius:999px;display:flex;align-items:center;justify-content:center;transition:transform .15s ease}.vl-category-tab:hover .vl-cat-icon-chip{transform:scale(1.08) rotate(-4deg)}.vl-table tbody tr:nth-child(2n){background:#5b4fe906}.vl-page-header{display:flex;align-items:baseline;gap:10px;margin-bottom:4px}.vl-page-sub{font-size:12.5px;color:var(--text-lo);margin:0 0 16px}html,body{width:100%;height:100%;overflow-x:hidden}#root{width:100%}.vl-app-root{margin:0 auto;width:100%;box-sizing:border-box;padding:2rem 1rem;min-height:100vh;display:flex;flex-direction:column}.vl-app-root>div{flex:1;min-height:0}.vl-app-root-wide{padding:1.5rem}@media (max-width: 900px){.vl-app-root-wide{padding:1rem}}@media (max-width: 600px){.vl-app-root{padding:1rem .75rem}.vl-app-root-wide{padding:.75rem}}@media (max-width: 480px){.vl-auth-shell{padding:1rem;min-height:100vh;border-radius:0}.vl-auth-box{padding:1.5rem;border-radius:var(--radius-md)}}@media (max-width: 780px){.vl-shell{flex-direction:column;min-height:0;border-radius:var(--radius-md)}.vl-sidebar{width:100%;flex-direction:row;align-items:center;padding:.75rem 1rem;gap:8px;overflow-x:auto}.vl-sidebar>div:first-child{padding:0 8px 0 0;flex-shrink:0}.vl-sidebar nav{display:flex;flex-direction:row;gap:4px;flex:1}.vl-nav-btn{margin:0;white-space:nowrap}.vl-nav-btn:before{display:none}.vl-sidebar>div:last-child{margin-top:0;padding:0;flex-shrink:0}.vl-sidebar>div:last-child .vl-btn{width:auto;padding:0 14px}}@media (max-width: 700px){.vl-tab-btn{font-size:13px;margin-right:12px;padding:6px 2px}}@media (max-width: 520px){.vl-page-header{flex-wrap:wrap}}.vl-table-scroll{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}.vl-table-scroll .vl-table{min-width:520px}.vl-modal-box{max-height:88vh;overflow-y:auto}@media (max-width: 480px){.vl-modal-backdrop{padding:1rem;align-items:flex-end}.vl-modal-box{width:100%;max-width:100%;border-radius:var(--radius-md) var(--radius-md) 0 0;max-height:85vh}}@media (max-width: 480px){.vl-content-thumb{height:70px}}.vl-spinner{width:15px;height:15px;border-radius:50%;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;animation:vlSpin .7s linear infinite;display:inline-block}@keyframes vlSpin{to{transform:rotate(360deg)}}