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10px;border-bottom:1px solid #f3f4f6;background:#fafafa;overflow-x:auto;overflow-y:hidden;white-space:nowrap;scrollbar-width:thin;-webkit-overflow-scrolling:touch;flex-shrink:0}.ds-ai-thread-empty{padding:16px 8px;color:#65676b;font-size:13px;text-align:center}.ds-ai-thread-pill{flex-shrink:0;padding:6px 12px;border:1px solid #dddfe2;border-radius:999px;background:#fff;color:#1c1e21;font-size:13px;font-family:inherit;cursor:pointer;max-width:180px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;transition:background .15s,color .15s}.ds-ai-thread-pill:hover{background:#f5f6f7}.ds-ai-thread-pill.active{background:#e7f3ff;color:#1877f2;border-color:#1877f2;font-weight:500}.ds-ai-thread-pill.new{border-style:dashed;color:#6d28d9;font-weight:600;padding:6px 14px}.unified-chat-thread .chat-composer,.unified-chat-thread [class*=composer],.unified-chat-thread>form{position:sticky;bottom:0;background:#fff;border-top:1px solid #e2e8f0;margin:0;padding:8px 12px;flex-shrink:0;z-index:5;contain:layout paint;will-change:transform}.unified-chat-thread .chat-composer textarea,.unified-chat-thread [class*=composer] textarea,.unified-chat-thread>form textarea{resize:none;min-height:40px;max-height:140px;font-size:14px;line-height:1.4;overscroll-behavior:contain}.ds-chat-mode-tabs{display:flex;gap:6px;padding:10px 14px;border-bottom:1px solid var(--border,#e5e7eb);background:var(--surface,#fafafa);position:sticky;top:0;z-index:5}.ds-chat-mode-tab{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:999px;border:1px solid var(--border,#e5e7eb);background:var(--surface-2,#ffffff);color:var(--text-muted,#6b7280);font-size:13px;font-weight:500;cursor:pointer;transition:background .12s ease,color .12s ease,border-color .12s ease}.ds-chat-mode-tab:hover{background:var(--hover,#f3f4f6);color:var(--text,#111827)}.ds-chat-mode-tab.active{background:var(--primary,#2563eb);color:#fff;border-color:var(--primary,#2563eb)}.ds-chat-mode-tab:focus-visible{outline:2px solid var(--primary,#2563eb);outline-offset:2px}