*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #ffffff;--surface: #f7f7f8;--border: #e5e5e5;--text: #0d0d0d;--text-secondary: #6e6e80;--accent: #111111;--accent-hover: #333333;--accent-light: #efefef;--radius: 12px;--radius-sm: 6px;--shadow: 0 1px 3px rgba(0,0,0,.08);--font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;--font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;--sidebar-width: 260px}html,body,#root{height:100%;font-family:var(--font);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}.app{display:flex;flex-direction:row;height:100vh;overflow:hidden}.main-content{flex:1;display:flex;flex-direction:column;height:100vh;overflow:hidden;min-width:0}.sidebar{flex-shrink:0;background:var(--surface);display:flex;flex-direction:column;height:100vh;overflow:hidden;width:0;border-right:none;transition:width .2s ease}.sidebar.open{width:var(--sidebar-width);border-right:1px 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var(--border);display:flex;flex-direction:column;gap:4px;position:relative;transition:background .1s;min-width:var(--sidebar-width)}.sidebar-item:hover{background:#ebebeb}.sidebar-item.active{background:var(--accent-light)}.conv-title{font-size:13px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding-right:24px;color:var(--text)}.conv-meta-row{display:flex;align-items:center;gap:8px}.conv-doc-badge{font-size:11px;color:var(--text-secondary);background:#e2e2e2;padding:1px 6px;border-radius:3px;font-weight:500;white-space:nowrap}.conv-time{font-size:11px;color:var(--text-secondary);white-space:nowrap}.conv-delete{position:absolute;top:10px;right:10px;width:22px;height:22px;border-radius:4px;border:none;background:transparent;color:var(--text-secondary);cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .15s,background .15s}.sidebar-item:hover 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.pi-icon{flex-shrink:0;width:16px;text-align:center;margin-top:1px}.progress-item.iter{color:var(--text-secondary);font-weight:500;margin-top:4px;font-size:11.5px;text-transform:uppercase;letter-spacing:.04em}.progress-item.iter:first-child{margin-top:0}.progress-item.tool-call{color:var(--text)}.progress-item.tool-result.success{color:#111}.progress-item.tool-result.failure{color:#ef4444}@keyframes spin{to{transform:rotate(360deg)}}.thinking-dots{display:inline-flex;gap:4px;align-items:center;padding:4px 0}.thinking-dots span{width:6px;height:6px;background:#111;border-radius:50%;animation:bounce 1.2s ease-in-out infinite}.thinking-dots span:nth-child(2){animation-delay:.2s}.thinking-dots span:nth-child(3){animation-delay:.4s}@keyframes bounce{0%,60%,to{transform:translateY(0);opacity:.4}30%{transform:translateY(-5px);opacity:1}}.input-area{flex-shrink:0;background:var(--bg);border-top:1px solid var(--border);padding:16px 20px 20px}.input-inner{max-width:760px;margin:0 auto;position:relative}.file-previews{display:flex;gap:8px;padding:8px 0;flex-wrap:wrap}.file-preview{position:relative;width:72px;height:72px;border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--border);flex-shrink:0}.file-preview img{width:100%;height:100%;object-fit:cover}.file-icon{width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--surface);gap:2px}.file-icon span:first-child{font-size:14px;font-weight:700;color:var(--accent)}.file-icon-name{font-size:9px;color:var(--text-secondary);max-width:60px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-remove{position:absolute;top:2px;right:2px;width:18px;height:18px;border-radius:50%;background:#0009;color:#fff;border:none;cursor:pointer;font-size:12px;display:flex;align-items:center;justify-content:center;line-height:1}.file-size{position:absolute;bottom:2px;right:4px;font-size:9px;color:#fff;background:#00000080;padding:0 3px;border-radius:2px}.input-row{display:flex;align-items:flex-end;gap:8px}.attach-btn{flex-shrink:0;width:38px;height:38px;border-radius:8px;border:1px solid var(--border);background:var(--bg);color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:border-color .15s,color .15s;margin-bottom:7px}.attach-btn:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}.attach-btn:disabled{opacity:.4;cursor:not-allowed}.input-row .input-box{flex:1;min-height:52px;max-height:160px;padding:14px 16px;font-size:15px;font-family:var(--font);color:var(--text);background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);resize:none;line-height:1.5;transition:border-color .15s,box-shadow .15s;box-shadow:var(--shadow);overflow-y:auto}.input-row .input-box::placeholder{color:#a0a0b0}.input-row .input-box:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px #00000014}.input-row .input-box:disabled{background:var(--surface);cursor:not-allowed}.input-row .send-btn{position:static;flex-shrink:0;width:38px;height:38px;border-radius:8px;border:none;background:var(--accent);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .15s;margin-bottom:7px}.input-row .send-btn:hover:not(:disabled){background:var(--accent-hover)}.input-row .send-btn:disabled{background:#ccc;cursor:not-allowed}.input-row .send-btn svg{width:16px;height:16px}.input-hint{margin-top:8px;font-size:12px;color:var(--text-secondary);text-align:center}.share-page{min-height:100vh;background:var(--bg);display:flex;flex-direction:column}.share-topbar{display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:56px;border-bottom:1px solid var(--border);background:var(--bg);position:sticky;top:0;z-index:10}.share-brand{font-weight:600;font-size:16px;color:var(--text)}.share-cta{display:inline-block;padding:8px 18px;background:var(--accent);color:#fff;text-decoration:none;border-radius:var(--radius-sm);font-size:13px;font-weight:600;transition:background .15s}.share-cta:hover{background:var(--accent-hover)}.share-hero{background:var(--surface);border-bottom:1px solid var(--border);padding:28px 24px}.share-hero .share-doc-badge{display:inline-block;font-size:12px;font-weight:500;color:var(--text-secondary);background:#e2e2e2;padding:3px 10px;border-radius:20px;margin-bottom:12px}.share-question{font-size:22px;font-weight:600;color:var(--text);line-height:1.4;max-width:800px}.share-body{flex:1;max-width:800px;width:100%;margin:0 auto;padding:0 24px 40px}.share-loading,.share-error{text-align:center;padding:60px 20px;color:var(--text-secondary);font-size:15px}.share-error{color:#ef4444}.share-footer{padding:20px 24px;border-top:1px solid var(--border);text-align:center;font-size:12px;color:var(--text-secondary)}.share-footer a{color:var(--accent);text-decoration:none}.share-footer a:hover{text-decoration:underline}@media(max-width:768px){.sidebar{position:fixed;left:0;top:0;width:280px;transform:translate(-100%);transition:transform .2s ease;border-right:1px solid var(--border);z-index:200}.sidebar.open{transform:translate(0);width:280px}.sidebar-close{display:block}.sidebar-overlay{display:block;position:fixed;inset:0;background:#0000004d;z-index:199}.suggestions{grid-template-columns:1fr}.message-list{padding:16px 14px 32px}.input-area{padding:12px 14px 16px}.header-brand span:last-child{display:none}.share-hero{padding:20px 16px}.share-question{font-size:18px}.share-body{padding:0 16px 32px}.share-topbar{padding:0 16px}}