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.chat-text{background:linear-gradient(135deg,#f1f5f9,#e8edff);color:var(--text-primary);border-bottom-left-radius:4px}.chat-plan-summary{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px;padding-top:8px;border-top:1px solid rgba(91,127,255,.15)}.chat-plan-summary span{font-size:12px;font-weight:600;color:var(--primary-color);background:#5b7fff14;padding:2px 8px;border-radius:6px}.chat-typing{display:flex;align-items:center;gap:4px;padding:12px 16px}.typing-dot{width:8px;height:8px;border-radius:50%;background:var(--primary-color);opacity:.4;animation:typingBounce 1.4s infinite ease-in-out}.typing-dot:nth-child(1){animation-delay:0s}.typing-dot:nth-child(2){animation-delay:.2s}.typing-dot:nth-child(3){animation-delay:.4s}@keyframes typingBounce{0%,80%,to{transform:scale(.6);opacity:.4}40%{transform:scale(1);opacity:1}}.version-history{margin:16px 0;border:1px solid var(--border-light);border-radius:12px;background:#f8fafc;padding:12px}.version-history-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;color:var(--text-primary);font-size:13px;font-weight:700}.version-history-header span:last-child{color:var(--text-muted);font-weight:600}.version-history-list{display:grid;gap:8px}.version-history-item{display:grid;gap:4px;width:100%;padding:10px 12px;border:1px solid transparent;border-radius:10px;background:#fff;color:var(--text-secondary);text-align:left;cursor:pointer}.version-history-item:focus-visible{outline:2px solid rgba(91,127,255,.35);outline-offset:2px}.version-history-item:hover{border-color:#5b7fff40;background:#fdfdff}.version-history-item.active{border-color:var(--primary-color);background:var(--primary-light)}.version-row-top{display:flex;align-items:center;justify-content:space-between;gap:8px;min-width:0}.version-title{min-width:0;color:var(--text-primary);font-size:13px;font-weight:800}.version-delete-btn{width:24px;height:24px;border:none;border-radius:6px;background:transparent;color:var(--text-muted);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;opacity:0;transition:all .18s ease}.version-history-item:hover .version-delete-btn,.version-delete-btn:focus-visible{opacity:1}.version-delete-btn:hover{background:#ef44441a;color:var(--danger-color)}.version-delete-btn:disabled{cursor:not-allowed;opacity:.35}.version-delete-btn:disabled:hover{background:transparent;color:var(--text-muted)}.version-parent,.version-query,.version-summary{font-size:12px;line-height:1.35}.version-parent{color:var(--primary-color);font-weight:700}.version-query{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.version-summary{color:var(--text-muted)}