.header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--border);flex-shrink:0}.header-left{display:flex;align-items:center;gap:10px;min-width:0}.logo{width:28px;height:28px;border-radius:50%;background:linear-gradient(135deg,#7c3aed,#a78bfa);color:#fff;font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}.title{font-size:15px;font-weight:600;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.btn-upgrade{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;background:var(--accent);color:#fff;border:none;border-radius:8px;font-size:13px;font-weight:500;cursor:pointer;white-space:nowrap}.btn-upgrade:hover{filter:brightness(1.1)}.header-right{display:flex;align-items:center;gap:4px}.icon-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;padding:0;background:transparent;border:none;border-radius:6px;color:var(--text-secondary);cursor:pointer}.icon-btn:hover{background:var(--hover);color:var(--text-primary)}.chat-input-wrap{width:100%}.attached-bar{display:flex;align-items:center;gap:10px;margin-bottom:10px;padding:10px 12px;background:var(--attached-bg);border:1px solid var(--attached-border);border-radius:10px;min-height:44px}.attached-icon{display:flex;align-items:center;justify-content:center;color:var(--attached-icon);flex-shrink:0}.attached-text{flex:1;font-size:13px;line-height:1.4;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}.attached-remove{display:flex;align-items:center;justify-content:center;width:28px;height:28px;padding:0;background:transparent;border:none;border-radius:6px;color:var(--text-muted);cursor:pointer;flex-shrink:0}.attached-remove:hover{background:var(--hover);color:var(--text-primary)}.chat-input-form{position:relative;display:flex;align-items:flex-end;background:var(--input-bg);border:1px solid var(--border);border-radius:12px;padding:12px 12px 12px 14px}.chat-input{flex:1;min-height:60px;max-height:120px;padding:0 44px 0 0;background:transparent;border:none;resize:none;font-size:14px;line-height:1.5;color:var(--text-primary);font-family:inherit}.chat-input::placeholder{color:var(--text-muted)}.chat-input:focus{outline:none}.send-btn{position:absolute;right:10px;bottom:10px;width:36px;height:36px;display:flex;align-items:center;justify-content:center;background:var(--text-secondary);color:var(--bg);border:none;border-radius:50%;cursor:pointer;flex-shrink:0}.send-btn:hover:not(:disabled){background:var(--accent);color:#fff}.send-btn:disabled{opacity:.4;cursor:not-allowed}.chat-input-agent-row{display:flex;align-items:center;gap:8px;margin-top:10px;padding-top:10px;border-top:1px solid var(--border)}.chat-input-agent-badge{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);padding:2px 5px;background:var(--block-bg);border-radius:4px}.chat-input-agent-label{font-size:12px;color:var(--text-secondary);font-weight:500}.chat-input-agent-toggle{width:36px;height:20px;border-radius:10px;background:var(--border);border:none;cursor:pointer;padding:0;position:relative;flex-shrink:0;transition:background-color .2s}.chat-input-agent-toggle:hover{background:var(--text-muted)}.chat-input-agent-toggle--on{background:var(--accent)}.chat-input-agent-toggle--on:hover{filter:brightness(1.08)}.chat-input-agent-toggle-thumb{position:absolute;top:2px;left:2px;width:16px;height:16px;border-radius:50%;background:#fff;box-shadow:0 1px 2px #0003;transition:transform .2s}.chat-input-agent-toggle--on .chat-input-agent-toggle-thumb{transform:translate(16px)}.chat-input-file-hidden{position:absolute;width:0;height:0;opacity:0;overflow:hidden;pointer-events:none}.chat-input-upload-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;padding:0;margin-right:4px;flex-shrink:0;background:transparent;border:none;border-radius:8px;color:var(--text-muted);cursor:pointer}.chat-input-upload-btn:hover:not(:disabled){background:var(--hover);color:var(--text-secondary)}.chat-input-upload-btn:disabled{cursor:not-allowed;opacity:.5}.chat-input-upload-spinner{font-size:14px;color:var(--text-muted)}.chat-input-docs{margin-top:10px;padding-top:10px;border-top:1px solid var(--border)}.chat-input-docs-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);display:block;margin-bottom:6px}.chat-input-docs-list{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px 12px}.chat-input-docs-item{font-size:12px;color:var(--text-secondary);line-height:1.4}.chat-message-row{display:flex;width:100%}.chat-message-row--user{justify-content:flex-end}.chat-message-row--system{justify-content:flex-start}.chat-message{max-width:85%;padding:10px 14px;border-radius:12px;word-break:break-word}.chat-message-row--user .chat-message{border-bottom-right-radius:4px;background:var(--accent);color:#fff}.chat-message-ref{margin-top:10px;padding-top:10px;border-top:1px solid rgba(255,255,255,.35)}.chat-message-ref-label{font-size:10px;text-transform:uppercase;letter-spacing:.06em;opacity:.9;display:block;margin-bottom:4px}.chat-message-ref-text{font-size:12px;line-height:1.45;white-space:pre-wrap;word-break:break-word;opacity:.95;max-height:120px;overflow-y:auto}.chat-message-row--system .chat-message{border-bottom-left-radius:4px;background:var(--block-bg);border:1px solid var(--border)}.chat-message--selection{border-left:3px solid var(--accent)}.chat-message--assistant .chat-message-text{color:var(--text-secondary)}.chat-message-label{font-size:10px;text-transform:uppercase;letter-spacing:.06em;color:var(--accent);margin-bottom:6px}.chat-message-block,.chat-message-text{font-size:13px;line-height:1.5;white-space:pre-wrap;color:inherit}.chat-message-actions{display:flex;gap:8px;margin-top:10px;padding-top:10px;border-top:1px solid var(--border)}.chat-message-btn{padding:6px 12px;font-size:12px;font-weight:500;border-radius:8px;border:1px solid transparent;cursor:pointer;transition:opacity .15s,background-color .15s}.chat-message-btn:disabled{opacity:.7;cursor:not-allowed}.chat-message-btn--accept{background:var(--accent);color:#fff;border-color:var(--accent)}.chat-message-btn--accept:hover:not(:disabled){filter:brightness(1.08)}.chat-message-btn--reject{background:transparent;color:var(--text-secondary);border-color:var(--border)}.chat-message-btn--reject:hover:not(:disabled){background:var(--block-bg);border-color:var(--text-muted)}.chat-message-row--system .chat-message-block,.chat-message-row--system .chat-message-text{color:var(--text-primary)}.typing-indicator{display:flex;align-items:center;gap:4px;padding:12px 16px;background:var(--block-bg);border:1px solid var(--border);border-radius:12px 12px 12px 4px}.typing-dot{width:6px;height:6px;border-radius:50%;background:var(--text-muted);animation:typing-bounce 1.4s ease-in-out infinite both}.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 typing-bounce{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-4px)}}.app{display:flex;flex-direction:column;height:100%;min-height:0}.main{flex:1;display:flex;flex-direction:column;padding:16px;min-height:0;overflow:hidden}.messages{flex:1;overflow-y:auto;margin-bottom:12px;min-height:120px;display:flex;flex-direction:column;gap:10px}.messages-empty{flex:1;display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:13px;padding:24px;text-align:center}.error-banner{padding:10px 12px;margin-bottom:12px;background:#ef444426;border:1px solid rgba(239,68,68,.4);border-radius:8px;color:#fca5a5;font-size:13px}.input-area{flex-shrink:0;margin-top:auto}.footer{flex-shrink:0;padding:8px 16px;display:flex;justify-content:flex-end;border-top:1px solid var(--border)}.footer .icon-btn{color:var(--text-muted)}.footer .icon-btn:hover{color:var(--text-secondary)}:root{--bg: #1a1a1d;--bg-elevated: #222226;--text-primary: #e4e4e7;--text-secondary: #a1a1aa;--text-muted: #71717a;--border: #2d2d32;--hover: #27272a;--input-bg: #18181b;--accent: #7c3aed;--block-bg: #252528;--attached-bg: #2d3748;--attached-border: #3d4a5c;--attached-icon: #718096}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0;height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;font-size:14px;background:var(--bg);color:var(--text-primary);-webkit-font-smoothing:antialiased}#root{height:100%;display:flex;flex-direction:column;min-height:0}button{font-family:inherit}