:root{--color-bg:#f5f5f5;--color-surface:#fff;--color-text:#1a1a1a;--color-text-secondary:#666;--color-border:#e0e0e0;--color-primary:#2d7d46;--color-primary-hover:#236635;--color-primary-light:#e8f5e9;--color-danger:#d32f2f;--color-danger-light:#fde8e8;--color-card-document:#2d7d46;--color-card-ask:#c4d4e1;--color-card-ask-border:#90b0c9;--color-card-error:#e4c8c7;--color-card-error-border:#d32f2f;--color-card-warning:#e4d9c2;--color-card-warning-border:#c9a84c;--color-card-plan:#d5cce3;--color-card-plan-border:#9b7fc4;--color-card-suggest:#c8dfcc;--color-card-suggest-border:#5fa86a;--sidebar-width:260px;--input-height:56px;--border-radius:8px;--border-radius-card:18px 18px 18px 4px;--border-radius-doc:2px;--shadow-sm:0 1px 3px #00000014;--shadow-md:0 2px 8px #0000001f;--shadow-lg:0 4px 16px #00000029;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono:"Fira Code", "Cascadia Code", Consolas, monospace}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text);line-height:1.5}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}.auth-page{background:var(--color-bg);justify-content:center;align-items:center;min-height:100vh;display:flex}.auth-card{background:var(--color-surface);border-radius:var(--border-radius);box-shadow:var(--shadow-md);width:100%;max-width:400px;padding:40px}.auth-card h1{color:var(--color-text);margin-bottom:8px;font-size:24px;font-weight:600}.auth-card .subtitle{color:var(--color-text-secondary);margin-bottom:24px;font-size:14px}.form-group{margin-bottom:16px}.form-group label{color:var(--color-text-secondary);margin-bottom:4px;font-size:13px;font-weight:500;display:block}.form-group input{border:1px solid var(--color-border);width:100%;font-size:14px;font-family:var(--font-sans);border-radius:6px;outline:none;padding:10px 12px;transition:border-color .15s}.form-group input:focus{border-color:var(--color-primary)}.btn{font-size:14px;font-weight:500;font-family:var(--font-sans);cursor:pointer;border:none;border-radius:6px;justify-content:center;align-items:center;padding:10px 20px;transition:background .15s,opacity .15s;display:inline-flex}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:var(--color-primary);color:#fff;width:100%}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover)}.btn-secondary{color:var(--color-primary);border:1px solid var(--color-border);background:0 0}.btn-secondary:hover:not(:disabled){background:var(--color-primary-light)}.error-text{color:var(--color-danger);margin-top:8px;font-size:13px}.link-row{text-align:center;color:var(--color-text-secondary);margin-top:16px;font-size:13px}.app-layout{height:100vh;display:flex;position:relative;overflow:hidden}.sidebar{width:var(--sidebar-width);background:var(--color-surface);border-right:1px solid var(--color-border);flex-direction:column;flex-shrink:0;transition:margin-left .2s;display:flex}.sidebar-collapsed{margin-left:calc(-1 * var(--sidebar-width))}.sidebar-overlay{display:none}.sidebar-header{border-bottom:1px solid var(--color-border);justify-content:space-between;align-items:center;padding:16px;display:flex}.sidebar-header h2{font-size:16px;font-weight:600}.sidebar-content{flex:1;padding:8px;overflow-y:auto}.sidebar-footer{border-top:1px solid var(--color-border);color:var(--color-text-secondary);padding:12px 16px;font-size:12px}.main-area{flex-direction:column;flex:1;min-width:0;display:flex}.main-header{border-bottom:1px solid var(--color-border);background:var(--color-surface);align-items:center;min-height:40px;padding:8px 12px;display:flex}.btn-hamburger{cursor:pointer;color:var(--color-text-secondary);background:0 0;border:none;border-radius:4px;padding:4px 8px;font-size:20px;line-height:1}.btn-hamburger:hover{background:var(--color-bg);color:var(--color-text)}.chat-area{flex:1;padding:16px 24px;overflow-y:auto}.input-area{border-top:1px solid var(--color-border);background:var(--color-surface);padding:12px 24px 16px}.input-row{align-items:flex-end;gap:8px;display:flex}.btn-attach{background:var(--color-bg);width:42px;height:42px;color:var(--color-text-secondary);border:1px solid var(--color-border);border-radius:8px;flex-shrink:0;padding:0;font-size:20px}.btn-attach:hover:not(:disabled){background:var(--color-border);color:var(--color-text)}.btn-attach:disabled{opacity:.4;cursor:not-allowed}.file-chips{flex-wrap:wrap;gap:6px;margin-bottom:8px;display:flex}.file-chip{background:var(--color-bg);border:1px solid var(--color-border);color:var(--color-text-secondary);text-overflow:ellipsis;white-space:nowrap;border-radius:12px;align-items:center;gap:4px;max-width:200px;padding:3px 8px;font-size:12px;display:inline-flex;overflow:hidden}.file-chip-remove{cursor:pointer;color:var(--color-text-secondary);background:0 0;border:none;padding:0;font-size:14px;line-height:1}.file-chip-remove:hover{color:var(--color-danger)}.input-row textarea{border:1px solid var(--color-border);font-size:14px;font-family:var(--font-sans);resize:none;border-radius:8px;outline:none;flex:1;min-height:42px;max-height:160px;padding:10px 12px;line-height:1.4}.input-row textarea:focus{border-color:var(--color-primary)}.btn-send{border-radius:8px;width:42px;height:42px;padding:0;font-size:18px}.btn-new-task{gap:6px;width:100%;margin-bottom:8px;padding:8px 12px;font-size:13px}.task-group-title{color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.5px;padding:8px 8px 4px;font-size:11px;font-weight:600}.task-item{cursor:pointer;color:var(--color-text);border-radius:6px;align-items:center;gap:8px;padding:8px;font-size:13px;transition:background .1s;display:flex}.task-item:hover{background:var(--color-bg)}.task-item.active{background:var(--color-primary-light)}.task-running-dot{background:var(--color-primary);border-radius:50%;flex-shrink:0;width:8px;height:8px;animation:1.5s ease-in-out infinite pulse}.task-item-title{text-overflow:ellipsis;white-space:nowrap;flex:1;overflow:hidden}.task-item-delete{opacity:0;color:var(--color-text-secondary);cursor:pointer;background:0 0;border:none;padding:0 4px;font-size:16px}.task-item:hover .task-item-delete{opacity:1}.welcome{height:100%;color:var(--color-text-secondary);text-align:center;flex-direction:column;justify-content:center;align-items:center;padding:40px;display:flex}.welcome h2{color:var(--color-text);margin-bottom:8px;font-size:20px;font-weight:600}.welcome p{max-width:400px;font-size:14px}.message{gap:8px;margin-bottom:16px;display:flex}.message.user{justify-content:flex-end}.message .bubble{border-radius:12px;max-width:80%;padding:10px 14px;font-size:14px;line-height:1.5}.message.user .bubble{background:var(--color-primary);color:#fff;border-radius:12px 12px 4px}.message.agent .bubble{background:var(--color-surface);border:1px solid var(--color-border);border-radius:12px 12px 12px 4px}.streaming-indicator{background:var(--color-primary);vertical-align:text-bottom;width:6px;height:14px;margin-left:2px;animation:.8s infinite blink;display:inline-block}@keyframes blink{0%,50%{opacity:1}51%,to{opacity:0}}.bubble p{margin-bottom:8px}.bubble p:last-child{margin-bottom:0}.bubble ul,.bubble ol{margin-bottom:8px;padding-left:20px}.bubble code{font-family:var(--font-mono);background:#0000000f;border-radius:3px;padding:1px 4px;font-size:13px}.bubble pre{color:#d4d4d4;background:#1e1e1e;border-radius:6px;margin-bottom:8px;padding:12px;overflow-x:auto}.bubble pre code{color:inherit;background:0 0;padding:0}.bubble h1,.bubble h2,.bubble h3{margin-top:12px;margin-bottom:6px}.bubble table{border-collapse:collapse;width:100%;margin-bottom:8px}.bubble th,.bubble td{border:1px solid var(--color-border);text-align:left;padding:6px 10px;font-size:13px}.bubble th{background:var(--color-bg);font-weight:600}.card{border-radius:var(--border-radius-card);max-width:80%;box-shadow:var(--shadow-sm);overflow:hidden}.card .bubble{border:none;border-radius:0;max-width:100%}.card-header{align-items:center;gap:8px;padding:8px 14px;font-size:13px;font-weight:600;display:flex}.card-icon{font-size:16px}.card-document{border-radius:var(--border-radius-doc);border-top:4px solid var(--color-card-document);box-shadow:var(--shadow-md)}.card-document .bubble{border-radius:0}.card-ask{border:1px solid var(--color-card-ask-border)}.card-error{border:1px solid var(--color-card-error-border)}.card-warning{border:1px solid var(--color-card-warning-border)}.card-plan{border:1px solid var(--color-card-plan-border)}.card-suggest{border:1px solid var(--color-card-suggest-border)}.card-actions{border-top:1px solid var(--color-border);gap:8px;padding:10px 14px;display:flex}.card-actions-document{justify-content:flex-end}.btn-export{background:var(--color-bg);color:var(--color-text-secondary);border:1px solid var(--color-border);border-radius:4px;padding:5px 14px;font-size:12px;font-weight:600}.btn-export:hover:not(:disabled){background:var(--color-border);color:var(--color-text)}.btn-card-accept{background:var(--color-primary);color:#fff;border-radius:6px;padding:6px 16px;font-size:13px}.btn-card-accept:hover:not(:disabled){background:var(--color-primary-hover)}.btn-card-reject{color:var(--color-text-secondary);border:1px solid var(--color-border);background:0 0;border-radius:6px;padding:6px 16px;font-size:13px}.btn-card-reject:hover:not(:disabled){background:var(--color-bg);color:var(--color-text)}.bubble-prep{color:var(--color-text-secondary);border-radius:12px 12px 12px 4px;font-size:13px;background:var(--color-bg)!important;border:1px solid var(--color-border)!important}.step-list{flex-direction:column;gap:4px;margin:8px 0;display:flex}.step-block{border:1px solid var(--color-border);background:var(--color-surface);border-radius:8px;overflow:hidden}.step-block.step-active{border-color:var(--color-primary);box-shadow:0 0 0 1px var(--color-primary)}.step-header{cursor:pointer;-webkit-user-select:none;user-select:none;align-items:center;gap:6px;padding:8px 12px;font-size:13px;display:flex}.step-header:hover{background:var(--color-bg)}.step-status-icon{text-align:center;flex-shrink:0;width:16px;font-size:12px}.step-active .step-status-icon{color:var(--color-primary);animation:1.5s ease-in-out infinite pulse}.step-done .step-status-icon{color:var(--color-primary)}.step-error .step-status-icon{color:var(--color-danger)}.step-pending .step-status-icon{color:var(--color-text-secondary)}@keyframes pulse{0%,to{opacity:1}50%{opacity:.3}}.step-number{color:var(--color-text-secondary);flex-shrink:0;font-size:12px;font-weight:600}.step-title{text-overflow:ellipsis;white-space:nowrap;flex:1;font-weight:500;overflow:hidden}.step-badge{white-space:nowrap;border-radius:10px;flex-shrink:0;padding:1px 8px;font-size:11px;font-weight:600}.badge-blue{color:#1565c0;background:#e3f2fd}.badge-green{background:var(--color-primary-light);color:#2e7d32}.badge-red{background:var(--color-danger-light);color:#c62828}.badge-amber{color:#f57f17;background:#fff8e1}.badge-gray{background:var(--color-bg);color:var(--color-text-secondary)}.step-chevron{color:var(--color-text-secondary);flex-shrink:0;font-size:11px}.step-body{border-top:1px solid var(--color-border);color:var(--color-text-secondary);padding:8px 12px 12px;font-size:13px;line-height:1.5}.step-body p{margin-bottom:6px}.step-body p:last-child{margin-bottom:0}.step-body ul,.step-body ol{margin-bottom:6px;padding-left:18px}.btn-stop{background:var(--color-danger);color:#fff;border:none;font-size:14px}.btn-stop:hover{background:#b71c1c}.streaming-status{color:var(--color-text-secondary);font-size:13px;font-style:italic}.message-list{flex-direction:column;justify-content:flex-end;min-height:100%;display:flex}@media (width<=768px){.sidebar{z-index:100;transition:transform .2s;position:fixed;top:0;bottom:0;left:0}.sidebar-collapsed{margin-left:0;transform:translate(-100%)}.sidebar:not(.sidebar-collapsed){transform:translate(0)}.sidebar-overlay{z-index:99;background:#0000004d;display:block;position:fixed;inset:0}.chat-area{padding:12px}.input-area{padding:8px 12px 12px}.message .bubble,.card{max-width:90%}}.feedback-bar{color:var(--color-text-muted,#999);flex-wrap:wrap;align-items:center;gap:8px;padding:4px 0;font-size:12px;display:flex}.feedback-meta{font-family:var(--font-mono,monospace);color:var(--color-text-muted,#aaa);font-size:11px}.feedback-stars{gap:2px;display:flex}.feedback-star{cursor:pointer;color:#ccc;background:0 0;border:none;padding:0 1px;font-size:16px;line-height:1}.feedback-star.active,.feedback-star:hover{color:#f5a623}.feedback-star:disabled{cursor:default}.feedback-tags{flex-wrap:wrap;gap:4px;display:flex}.feedback-tag{background:var(--color-bg,#f0f0f0);border:1px solid var(--color-border,#e0e0e0);cursor:pointer;color:var(--color-text-secondary,#666);border-radius:12px;padding:2px 8px;font-size:11px}.feedback-tag.active{border-color:var(--color-primary,#2d7d46);color:var(--color-primary,#2d7d46);background:#e8f5e9}.feedback-thanks{color:var(--color-primary,#2d7d46);font-size:12px}