.mistake-book{max-width:1050px;margin:0 auto 35px}.mistake-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:30px;margin:15px 0 28px}.mistake-heading h1{font:500 clamp(2rem,5vw,3.6rem)/1.05 Georgia,serif;letter-spacing:-.05em;margin:10px 0}.mistake-heading p{max-width:650px;color:var(--muted);line-height:1.7}.mistake-toolbar{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:18px}.mistake-filters{display:flex;gap:8px;flex-wrap:wrap}.mistake-filters button{border:1px solid var(--line);border-radius:999px;padding:9px 13px;background:var(--panel-solid,#fff);color:var(--muted);cursor:pointer}.mistake-filters button.active{background:var(--accent);border-color:var(--accent);color:#fff}.mistake-filters span{opacity:.75;margin-left:4px}.mistake-toolbar label{font-size:.78rem;color:var(--muted);white-space:nowrap}.mistake-list{display:grid;gap:16px}.mistake-card{border:1px solid var(--line);border-radius:20px;background:var(--panel-solid,#fff);padding:25px;box-shadow:0 8px 26px rgba(var(--accent-rgb),.06)}.mistake-card.mastered{opacity:.78}.mistake-meta{display:flex;gap:8px;flex-wrap:wrap}.mistake-meta span{font-size:.68rem;border-radius:999px;background:var(--soft);color:var(--accent-dark);padding:6px 9px}.mistake-meta .mistake-mastered{background:#dcf7e7;color:#17653a}.mistake-card h3{font-size:1.06rem;line-height:1.55;margin:18px 0}.mistake-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.mistake-options button{display:flex;align-items:center;gap:10px;text-align:left;border:1px solid var(--line);border-radius:11px;background:transparent;padding:11px;color:var(--text);cursor:pointer}.mistake-options button.selected{border-color:var(--accent);background:var(--soft)}.mistake-options button span{display:grid;place-items:center;min-width:25px;height:25px;border-radius:50%;background:var(--soft);color:var(--accent-dark);font-size:.7rem;font-weight:700}.mistake-answer{margin-top:15px;padding:14px 16px;border-left:3px solid var(--accent);background:rgba(var(--accent-rgb),.045);font-size:.78rem;line-height:1.7}.mistake-answer p{margin:4px 0}.mistake-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:15px}.mistake-actions span{font-size:.75rem;color:var(--muted)}.mistake-empty{text-align:center;border:1px dashed var(--line);border-radius:20px;padding:55px 25px;color:var(--muted)}.mistake-empty>strong{font-size:2rem;color:var(--accent)}@media(max-width:700px){.mistake-heading,.mistake-toolbar{flex-direction:column;align-items:stretch}.mistake-options{grid-template-columns:1fr}.mistake-card{padding:18px}}

.mistake-section-label{font-size:.66rem;font-weight:750;letter-spacing:.09em;text-transform:uppercase;color:var(--accent-dark)}
.mistake-original{margin-top:18px;padding:16px 18px;border:1px solid var(--line);border-radius:14px;background:rgba(var(--accent-rgb),.025)}
.mistake-original h3{margin:14px 0;color:var(--muted)}
.mistake-transfer{margin-top:18px;padding:20px;border:1px solid rgba(var(--accent-rgb),.32);border-radius:16px;background:linear-gradient(135deg,rgba(var(--accent-rgb),.08),transparent 55%)}
.mistake-transfer h3{margin:14px 0}
.mistake-transfer-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}
.mistake-transfer-heading p{margin:5px 0 0;color:var(--muted);font-size:.76rem}
.mistake-transfer-heading .compact{padding:7px 10px;font-size:.7rem;white-space:nowrap}
.mistake-transfer .mistake-options button{background:var(--panel-solid,#fff)}
.mistake-options button:disabled{cursor:not-allowed;opacity:.66}
.mistake-feedback{margin-top:12px;border-radius:11px;padding:11px 14px;font-size:.76rem;line-height:1.55}
.mistake-feedback.wrong{border:1px solid #efc279;background:#fff8e9;color:#74470a}
.mistake-feedback p{margin:4px 0 0}
@media(max-width:700px){.mistake-transfer-heading{flex-direction:column}.mistake-original,.mistake-transfer{padding:15px}}