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.15s;font-family:inherit}.msg-quiz-btn.correct{background:#22c55e26;border-color:#22c55e;color:#15803d}.msg-quiz-btn.wrong{background:#ef444426;border-color:#ef4444;color:#b91c1c}.msg-quiz-btn.selected{font-weight:700}.msg-quiz-topic{font-size:.7rem;color:var(--text-muted);margin-top:6px}.msg-chapter-card{display:flex;align-items:center;gap:10px;background:#0000000a;border:1px solid var(--border);border-radius:10px;padding:10px;cursor:pointer}.msg-chapter-card:hover{background:#00000012}.msg-input-area{padding:10px 12px;border-top:1px solid var(--border);background:var(--surface);display:flex;gap:8px;align-items:flex-end;position:relative}.msg-input-wrap{flex:1;background:var(--bg);border:1px solid var(--border);border-radius:22px;display:flex;align-items:flex-end;overflow:hidden}.msg-attach-btn{background:none;border:none;color:var(--text-muted);cursor:pointer;padding:8px 10px;font-size:.9rem}.msg-input{flex:1;background:transparent;border:none;padding:10px 4px;font-size:.88rem;resize:none;max-height:100px;outline:none;font-family:inherit;color:var(--text)}.msg-send-btn{background:var(--accent,#1e40af);border:none;border-radius:50%;width:40px;height:40px;color:#fff;cursor:pointer;font-size:.9rem;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:opacity .15s}.msg-send-btn:hover{opacity:.85}.msg-attach-menu{position:absolute;bottom:58px;left:12px;background:var(--surface);border:1px solid var(--border);border-radius:10px;box-shadow:0 4px 20px #0000001f;padding:4px;min-width:200px;z-index:10}.msg-attach-item{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:6px;cursor:pointer;font-size:.85rem;color:var(--text)}.msg-attach-item:hover{background:var(--bg-alt,rgba(0,0,0,.04))}