:root{--bg:#f7f7f5;--surface:#fff;--text:#1d1d1f;--muted:#6b6b70;--border:#d9d9de;--primary:#2f6fdb;--primary-text:#fff;--ok:#1f8a4c;--bad:#c0392b;--radius:10px;--primary-tint:#2f6fdb1a;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--bg:#17181a;--surface:#222327;--text:#ececef;--muted:#9a9aa2;--border:#3a3b40;--primary:#5b8ff0;--primary-tint:#5b8ff029;--ok:#4cc27f;--bad:#ef6b5b}}*{box-sizing:border-box}[hidden]{display:none!important}.icon{flex:none;width:1.15em;height:1.15em}:focus-visible{outline:2px solid var(--primary);outline-offset:2px}body{background:var(--bg);color:var(--text);margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}header{border-bottom:1px solid var(--border);background:var(--surface);justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.logo{color:var(--text);align-items:center;gap:8px;font-size:1.2rem;font-weight:700;text-decoration:none;display:inline-flex}.logo .icon{color:var(--primary)}.header-actions{align-items:center;gap:4px;display:flex}.version-btn{border-radius:var(--radius);color:var(--muted);font:inherit;cursor:pointer;background:0 0;border:1px solid #0000;align-items:center;gap:4px;padding:2px 8px;font-size:.85rem;display:inline-flex}.version-btn:hover{border-color:var(--border);color:var(--text)}.modal{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);width:min(520px,100vw - 32px);max-height:calc(100vh - 64px);color:var(--text);padding:16px 20px}.modal::backdrop{background:#0006}.modal .toolbar{justify-content:space-between;margin-bottom:0}.samples-modal .toolbar{justify-content:flex-end}.sample-row{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:8px;padding:8px 0;display:flex}.sample-row .list-info{flex:1}.sample-added{color:var(--muted);align-items:center;gap:4px;padding:6px 10px;display:inline-flex}.release h2{margin:16px 0 4px;font-size:1.15rem}.release h3{margin:8px 0 0;font-size:1rem}.release ul{margin:4px 0;padding-left:20px}main{max-width:720px;margin:0 auto;padding:16px}h1{margin:8px 0 12px}.muted{color:var(--muted);font-size:.9rem}code{background:var(--surface);border:1px solid var(--border);border-radius:4px;padding:0 4px}.btn{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text);font:inherit;cursor:pointer;justify-content:center;align-items:center;gap:6px;padding:8px 14px;text-decoration:none;transition:border-color .15s,background-color .15s,filter .15s;display:inline-flex}.btn:hover:not(:disabled){border-color:var(--primary)}.btn:disabled{opacity:.5;cursor:default}.btn.primary{background:var(--primary);border-color:var(--primary);color:var(--primary-text)}.btn.primary:hover:not(:disabled),.btn.grade-ok:hover:not(:disabled){filter:brightness(1.1)}.btn.danger{color:var(--bad)}.btn.small{padding:4px 10px;font-size:.9rem}.toolbar{flex-wrap:wrap;gap:8px;margin:12px 0;display:flex}.lists{gap:10px;margin:0;padding:0;list-style:none;display:grid}.lists li{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;padding:12px;transition:border-color .15s,box-shadow .15s;display:flex}.lists li:hover{border-color:var(--primary);box-shadow:0 2px 8px #00000014}.list-name{font-size:1.1rem}.list-info{flex-direction:column;flex:1;display:flex}.list-select{width:20px;height:20px;accent-color:var(--primary);cursor:pointer}.count-tiles{grid-template-columns:repeat(4,1fr)}.list-actions{flex-wrap:wrap;gap:6px;display:flex}.empty{text-align:center;background:var(--surface);border:1px dashed var(--border);border-radius:var(--radius);padding:24px}.empty-icon{width:48px;height:48px;color:var(--muted)}.editor,.setup{flex-direction:column;gap:12px;display:flex}.editor label,.setup>label{flex-direction:column;gap:4px;display:flex}.setup>label{flex-direction:row;align-items:center;gap:8px}.row{grid-template-columns:1fr 1fr;gap:12px;display:grid}fieldset{border:1px solid var(--border);border-radius:var(--radius);flex-direction:column;gap:4px;display:flex}.tiles{grid-template-columns:repeat(3,1fr);gap:8px;display:grid}.tile{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);text-align:center;cursor:pointer;flex-direction:column;align-items:center;gap:6px;padding:12px 8px;transition:border-color .15s,background-color .15s;display:flex;position:relative}.tile .icon{width:28px;height:28px;color:var(--muted)}.tile input{opacity:0;pointer-events:none;position:absolute}.tile:hover{border-color:var(--primary)}.tile:has(input:checked){border-color:var(--primary);outline:1px solid var(--primary);background:var(--primary-tint)}.tile:has(input:checked) .icon{color:var(--primary)}.tile:has(input:focus-visible){outline:2px solid var(--primary);outline-offset:2px}.tile:has(input:disabled){opacity:.5;cursor:default;border-color:var(--border)}input:not([type=radio]):not([type=checkbox]),textarea{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);width:100%;color:var(--text);font:inherit;padding:10px}textarea{resize:vertical;font-family:ui-monospace,Consolas,monospace}.quiz,.summary{text-align:center;flex-direction:column;align-items:center;gap:12px;display:flex}.progress{background:var(--border);border-radius:4px;width:100%;height:8px;overflow:hidden}.bar{background:var(--ok);width:0;height:100%;transition:width .3s}.prompt{word-break:break-word;margin:24px 0 8px;font-size:2rem;font-weight:600}#answer-form{gap:8px;width:100%;max-width:420px;display:flex}#answer{text-align:center;font-size:1.3rem}#answer.correct{border-color:var(--ok);outline:2px solid var(--ok)}#answer.wrong{border-color:var(--bad);outline:2px solid var(--bad)}.feedback{min-height:1.6em;font-size:1.1rem}.ok,.bad{font-weight:600}.ok .icon,.bad .icon{vertical-align:-.2em}.ok{color:var(--ok)}.bad{color:var(--bad)}.card{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);width:100%;max-width:420px;min-height:220px;color:var(--text);font:inherit;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:8px;padding:24px 16px;display:flex;box-shadow:0 2px 8px #00000014}.card.flipped{border-color:var(--primary);cursor:default}.card .prompt{margin:0}.card-answer{min-height:1.5em;color:var(--primary);word-break:break-word;font-size:1.5rem}.grade{justify-content:center;margin:0}.grade .btn{min-width:140px}.btn.grade-bad{color:var(--bad);border-color:var(--bad)}.btn.grade-ok{background:var(--ok);border-color:var(--ok);color:var(--primary-text)}.summary-icon{width:56px;height:56px;color:var(--primary);margin-top:16px}.summary h1{margin-top:0}.score{color:var(--ok);margin:0;font-size:3rem;font-weight:700}.hardest{width:100%;max-width:420px;padding:0;list-style:none}.hardest li{border-bottom:1px solid var(--border);text-align:left;grid-template-columns:1fr 1fr auto;gap:8px;padding:6px 0;display:grid}@media (width<=480px){.row{grid-template-columns:1fr}.prompt{font-size:1.6rem}.tiles{grid-template-columns:1fr}.count-tiles{grid-template-columns:repeat(2,1fr)}.tile{text-align:left;flex-direction:row;padding:10px 12px}}.choices{flex-direction:column;gap:8px;width:100%;max-width:420px;display:flex}.btn.choice{text-align:left;word-break:break-word;justify-content:flex-start;align-items:center;gap:10px;width:100%;padding:12px 14px;font-size:1.1rem;display:flex}.choice-mark{margin-left:auto}.btn.choice:disabled{cursor:default}.choice-key{min-width:1.6em;color:var(--muted);flex:none;font-size:.9rem}.btn.choice.correct,.btn.choice.wrong{opacity:1}.btn.choice.correct{border-color:var(--ok);outline:2px solid var(--ok);color:var(--ok);font-weight:600}.btn.choice.wrong{border-color:var(--bad);outline:2px solid var(--bad);color:var(--bad)}