:root{--bg:#0b1220;--card:#101a2e;--card2:#0f1930;--text:#e8efff;--muted:#a9b6d6;--border:rgba(255,255,255,.1);--shadow:0 12px 40px rgba(0,0,0,.35);--primary:#6ae4ff;--primary2:#7c5cff;--good:#41d17b;--bad:#ff5c7a;--focus:rgba(106,228,255,.28)}[data-theme=light]{--bg:#f6f7fb;--card:#ffffff;--card2:#ffffff;--text:#0e1422;--muted:#5b667a;--border:rgba(12,18,32,.12);--shadow:0 10px 30px rgba(15,26,46,.1);--primary:#0ea5e9;--primary2:#7c3aed;--focus:rgba(14,165,233,.18)}html,body,.topbar,.card,.control,.btn,.chip,.opt,.badge,.pill,.bar{transition:background-color .45s ease,color .45s ease,border-color .45s ease,box-shadow .45s ease,background .45s ease}@media (prefers-reduced-motion: reduce){html,body,.topbar,.card,.control,.btn,.chip,.opt,.badge,.pill,.bar{transition:none}.snow{display:none}}*{box-sizing:border-box}html{min-height:100%}html{background:radial-gradient(1000px 400px at 15% 0%,rgba(124,92,255,.35),transparent 60%),radial-gradient(900px 450px at 85% 0%,rgba(106,228,255,.25),transparent 60%),var(--bg);background-attachment:fixed}body{min-height:100vh;margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial;color:var(--text);background:transparent}.snow{position:fixed;top:0;right:0;bottom:0;left:0;overflow:hidden;pointer-events:none;z-index:40}.flake{position:absolute;top:-10vh;border-radius:999px;background:color-mix(in oklab,var(--text),transparent 35%);filter:blur(.2px);animation-name:snow-fall;animation-timing-function:linear;animation-iteration-count:infinite}@keyframes snow-fall{0%{transform:translate3d(0,-10vh,0)}to{transform:translate3d(var(--drift, 0px),110vh,0)}}a{color:inherit}.hidden{display:none!important}.icon{display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;vertical-align:middle;color:currentColor;line-height:0}.icon>svg{display:block;stroke:currentColor}.topbar{position:sticky;top:0;z-index:10;display:flex;justify-content:space-between;align-items:center;padding:16px 18px;border-bottom:1px solid var(--border);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:color-mix(in oklab,var(--bg),transparent 18%)}.brand{display:flex;gap:12px;align-items:center}.logo{width:44px;height:44px;display:grid;place-items:center;border-radius:14px;background:linear-gradient(135deg,color-mix(in oklab,var(--primary),transparent 10%),color-mix(in oklab,var(--primary2),transparent 10%));box-shadow:var(--shadow)}.title{font-weight:800;letter-spacing:.2px}.subtitle{font-size:12px;color:var(--muted);margin-top:2px}.top-actions{display:flex;gap:10px;align-items:center}.container{width:min(980px,92vw);margin:18px auto 42px;display:grid;gap:16px}.toasts{position:fixed;right:16px;bottom:16px;z-index:50;display:flex;flex-direction:column;gap:10px;pointer-events:none}.toast{min-width:260px;max-width:min(420px,calc(100vw - 32px));padding:12px 14px;border-radius:14px;border:1px solid var(--border);background:color-mix(in oklab,var(--card),transparent 0%);box-shadow:var(--shadow);color:var(--text);font-weight:700;opacity:0;transform:translate(28px);animation:toast-in .22s ease forwards}.toast.leaving{animation:toast-out .18s ease forwards}.toast.bad{border-color:color-mix(in oklab,var(--bad),var(--border) 60%);box-shadow:0 12px 40px color-mix(in oklab,var(--bad),transparent 78%)}.toast.good{border-color:color-mix(in oklab,var(--good),var(--border) 60%);box-shadow:0 12px 40px color-mix(in oklab,var(--good),transparent 80%)}@keyframes toast-in{0%{opacity:0;transform:translate(28px)}to{opacity:1;transform:translate(0)}}@keyframes toast-out{0%{opacity:1;transform:translate(0)}to{opacity:0;transform:translate(0)}}@media (prefers-reduced-motion: reduce){.toast{animation:none;opacity:1;transform:none}.toast.leaving{opacity:0}}.card{background:var(--card);border:1px solid var(--border);border-radius:22px;box-shadow:var(--shadow);padding:18px}h1{margin:0 0 12px;font-size:24px}h2{margin:0 0 12px;font-size:22px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}@media (max-width:720px){.grid{grid-template-columns:1fr}.quiz-top{flex-direction:column;align-items:flex-start!important;gap:12px}.quiz-actions,.nav{width:100%}}.field{display:flex;flex-direction:column;gap:8px}.label{font-weight:700;font-size:13px}.hint{font-size:12px;color:var(--muted)}.row{display:flex;gap:10px}.control{width:100%;padding:11px 12px;border-radius:14px;border:1px solid var(--border);background:color-mix(in oklab,var(--card),transparent 0%);color:var(--text);outline:none}.control:focus{box-shadow:0 0 0 4px var(--focus)}.btn{border:1px solid var(--border);background:transparent;color:var(--text);padding:10px 12px;border-radius:14px;cursor:pointer;font-weight:700;transition:transform .06s ease,background .2s ease,border-color .2s ease;-webkit-user-select:none;user-select:none}.btn:active{transform:translateY(1px)}.btn.primary{border:none;background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff}.btn.ghost:hover{background:color-mix(in oklab,var(--text),transparent 92%)}.chips{display:flex;gap:10px;flex-wrap:wrap}.chip{border:1px solid var(--border);background:transparent;color:var(--text);padding:9px 10px;border-radius:999px;cursor:pointer;font-weight:800}.chip.active{border-color:color-mix(in oklab,var(--primary),var(--border) 40%);box-shadow:0 0 0 4px var(--focus)}.cta{margin-top:14px;display:flex;justify-content:flex-end}.status{margin-top:10px;color:var(--muted);font-size:13px;min-height:18px}.quiz-top{display:flex;align-items:center;justify-content:space-between;gap:14px}.meta{display:flex;flex-direction:column;gap:6px}.badge{display:inline-flex;width:fit-content;padding:6px 10px;border-radius:999px;font-weight:900;font-size:12px;border:1px solid var(--border);background:color-mix(in oklab,var(--text),transparent 94%)}.meta-line{color:var(--muted);font-size:13px;display:flex;align-items:center;gap:8px}.dot{opacity:.7}.bar{margin-top:12px;height:10px;background:color-mix(in oklab,var(--text),transparent 92%);border-radius:999px;overflow:hidden;border:1px solid var(--border)}.barFill{height:100%;border-radius:999px;background:linear-gradient(135deg,var(--primary),var(--primary2));transition:width .25s ease}.question{margin-top:14px}.qTitle{color:var(--muted);font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.6px}.qText{margin-top:8px;font-size:18px;font-weight:800;line-height:1.3}.options{margin-top:14px;display:grid;grid-template-columns:1fr 1fr;gap:10px}@media (max-width:720px){.options{grid-template-columns:1fr}}.opt{position:relative;display:flex;align-items:center;gap:12px;text-align:left;padding:12px 14px;border-radius:16px;border:1px solid var(--border);color:var(--text);background:color-mix(in oklab,var(--card),transparent 0%);cursor:pointer;transition:transform .06s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease;font-weight:800}.opt:hover{background:color-mix(in oklab,var(--text),transparent 94%);box-shadow:0 0 0 4px var(--focus)}.opt:active{transform:translateY(1px)}.opt[disabled]{opacity:.7;cursor:not-allowed}.opt .optText{color:var(--text);line-height:1.2}.opt .optKey{width:32px;height:32px;flex:0 0 32px;display:grid;place-items:center;border-radius:10px;border:1px solid var(--border);background:color-mix(in oklab,var(--text),transparent 92%);color:var(--text);font-weight:900}.opt.correct{border-color:color-mix(in oklab,var(--good),var(--border) 40%);background:color-mix(in oklab,var(--good),transparent 88%)}.opt.wrong{border-color:color-mix(in oklab,var(--bad),var(--border) 40%);background:color-mix(in oklab,var(--bad),transparent 88%)}.quiz-bottom{margin-top:16px;display:flex;align-items:center;justify-content:space-between;gap:14px}.feedback{color:var(--muted);font-size:13px;min-height:18px}.feedback.good{color:color-mix(in oklab,var(--good),var(--text) 20%)}.feedback.bad{color:color-mix(in oklab,var(--bad),var(--text) 20%)}.nav{display:flex;gap:10px;align-items:center}.resultGrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:10px}@media (max-width:720px){.resultGrid{grid-template-columns:1fr}}.stat{border:1px solid var(--border);border-radius:18px;padding:12px;background:color-mix(in oklab,var(--text),transparent 96%)}.statLabel{color:var(--muted);font-weight:900;font-size:12px;letter-spacing:.5px;text-transform:uppercase}.statValue{margin-top:6px;font-size:24px;font-weight:900}.review{margin-top:14px;border:1px solid var(--border);border-radius:18px;padding:10px 12px;background:color-mix(in oklab,var(--text),transparent 96%)}.review summary{cursor:pointer;font-weight:900}.reviewList{margin-top:10px;display:flex;flex-direction:column;gap:10px}.reviewItem{border:1px solid var(--border);border-radius:16px;padding:10px;background:color-mix(in oklab,var(--card),transparent 0%)}.reviewQ{font-weight:900}.reviewMeta{margin-top:6px;color:var(--muted);font-size:13px;display:flex;gap:8px;flex-wrap:wrap}.pill{display:inline-flex;padding:4px 8px;border-radius:999px;border:1px solid var(--border);background:color-mix(in oklab,var(--text),transparent 94%)}.pill.good{border-color:color-mix(in oklab,var(--good),var(--border) 40%)}.pill.bad{border-color:color-mix(in oklab,var(--bad),var(--border) 40%)}.footer{width:min(980px,92vw);margin:0 auto 26px;color:var(--muted);font-size:12px;text-align:center}
