*{box-sizing:border-box;margin:0;padding:0}body{color:#1e1e2e;background:#f5f6fa;height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;overflow:hidden}#root{height:100vh}.app{flex-direction:column;height:100vh;display:flex}.app-header{background:#fff;border-bottom:1px solid #e2e4eb;justify-content:space-between;align-items:center;padding:12px 20px;display:flex;box-shadow:0 1px 3px #0000000a}.app-header h1{color:#4f46e5;font-size:18px;font-weight:700}.header-user{color:#6b7280;align-items:center;gap:12px;font-size:13px;display:flex}.logout-btn{color:#6b7280;cursor:pointer;background:0 0;border:1px solid #d1d5db;border-radius:6px;padding:4px 12px;font-size:13px;transition:all .15s}.logout-btn:hover{color:#374151;background:#f3f4f6;border-color:#9ca3af}.app-body{flex:1;display:flex;overflow:hidden}.session-list{background:#fff;border-right:1px solid #e2e4eb;flex-direction:column;width:240px;display:flex}.session-header{color:#374151;border-bottom:1px solid 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#4f46e5}.session-id{color:#6b7280;font-family:monospace;font-size:13px}.session-meta{color:#9ca3af;margin-top:2px;font-size:11px}.chat-panel{background:#f5f6fa;flex-direction:column;flex:1;display:flex;overflow:hidden}.chat-panel.empty{color:#9ca3af;justify-content:center;align-items:center}.chat-messages{flex:1;padding:20px;overflow-y:auto}.message{border-radius:10px;max-width:90%;margin-bottom:16px;padding:12px 16px;line-height:1.5}.message-user{color:#fff;background:#4f46e5;border-bottom-right-radius:2px;margin-left:auto}.message-user .message-role{color:#ffffffb3}.message-user .message-content pre{color:#fff}.message-assistant{background:#fff;border:1px solid #e2e4eb;border-bottom-left-radius:2px;margin-right:auto}.message-error{color:#991b1b;background:#fef2f2;border:1px solid #fca5a5;margin-right:auto}.message-role{color:#9ca3af;text-transform:uppercase;margin-bottom:4px;font-size:11px;font-weight:600}.message-content pre{white-space:pre-wrap;word-wrap:break-word;color:#374151;font-family:inherit;font-size:14px;line-height:1.6}.message-images{flex-wrap:wrap;gap:8px;margin-bottom:8px;display:flex}.message-image-item{flex-direction:column;align-items:center;gap:4px;max-width:200px;display:flex}.message-image-thumb{object-fit:cover;cursor:pointer;border-radius:8px;max-width:200px;max-height:160px;transition:opacity .15s}.message-image-thumb:hover{opacity:.85}.message-user .message-image-thumb{border:2px solid #ffffff4d}.message-image-label{color:#6b7280;text-overflow:ellipsis;white-space:nowrap;text-align:center;max-width:200px;font-size:11px;overflow:hidden}.message-user .message-image-label{color:#ffffffb3}.message-files{flex-wrap:wrap;gap:6px;margin-bottom:8px;display:flex}.message-file-tag{color:#6b7280;background:#0000000f;border-radius:6px;padding:3px 8px;font-size:12px}.message-user .message-file-tag{color:#ffffffe6;background:#fff3}.tool-call-block{border:1px solid #e2e4eb;border-radius:8px;margin-top:8px;overflow:hidden}.tool-call-header{cursor:pointer;background:#f9fafb;align-items:center;gap:8px;padding:8px 12px;font-size:13px;transition:background .15s;display:flex}.tool-call-header:hover{background:#f0f1f5}.tool-call-header.pending{opacity:.6}.tool-icon{font-size:14px}.tool-name{color:#4f46e5;font-family:monospace;font-weight:600}.tool-toggle{color:#9ca3af;margin-left:auto;font-size:10px}.tool-call-detail{background:#f9fafb;border-top:1px solid #e2e4eb;padding:10px 12px}.tool-label{color:#6b7280;margin-bottom:4px;font-size:11px;font-weight:600}.tool-section{margin-bottom:8px}.tool-section pre{white-space:pre-wrap;word-wrap:break-word;color:#065f46;background:#f0fdf4;border-radius:4px;max-height:200px;padding:8px;font-size:12px;line-height:1.4;overflow-y:auto}.status-bar{color:#6b7280;align-items:center;gap:8px;padding:8px 16px;font-family:monospace;font-size:13px;animation:.2s fadeIn;display:flex}.status-dot{background:#4f46e5;border-radius:50%;flex-shrink:0;width:8px;height:8px;animation:1s ease-in-out infinite pulse}@keyframes pulse{0%,to{opacity:1}50%{opacity:.3}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.chat-input-area{background:#fff;border-top:1px solid #e2e4eb;gap:8px;padding:12px 16px;display:flex}.chat-input{color:#1e1e2e;resize:none;background:#f9fafb;border:1px solid #d1d5db;border-radius:8px;outline:none;padding:10px 12px;font-family:inherit;font-size:14px;transition:border-color .15s}.chat-input:focus{border-color:#4f46e5;box-shadow:0 0 0 2px #4f46e51a}.chat-input:disabled{opacity:.5}.chat-send{color:#fff;cursor:pointer;background:#4f46e5;border:none;border-radius:8px;padding:10px 20px;font-size:14px;font-weight:600;transition:background .15s}.chat-send:hover:not(:disabled){background:#4338ca}.chat-send:disabled{opacity:.4;cursor:not-allowed}.pending-files{background:#f9fafb;border-top:1px solid #e2e4eb;flex-wrap:wrap;gap:8px;padding:8px 16px;display:flex}.pending-file{background:#fff;border:1px solid #e2e4eb;border-radius:8px;align-items:center;gap:6px;max-width:200px;padding:4px 8px;font-size:12px;display:flex}.file-thumb{object-fit:cover;border-radius:4px;flex-shrink:0;width:32px;height:32px}.file-icon{flex-shrink:0;font-size:20px}.file-name{text-overflow:ellipsis;white-space:nowrap;color:#374151;overflow:hidden}.file-remove{color:#9ca3af;cursor:pointer;background:0 0;border:none;flex-shrink:0;padding:0 2px;font-size:16px;line-height:1}.file-remove:hover{color:#dc2626}.input-wrapper{flex:1;display:flex;position:relative}.input-wrapper .chat-input{width:100%}.mention-dropdown{z-index:50;background:#fff;border:1px solid #e2e4eb;border-radius:10px;max-height:200px;margin-bottom:4px;position:absolute;bottom:100%;left:0;right:0;overflow-y:auto;box-shadow:0 4px 16px #0000001a}.mention-header{color:#9ca3af;border-bottom:1px solid #f0f1f5;padding:8px 12px;font-size:12px}.mention-item{cursor:pointer;align-items:center;gap:10px;padding:8px 12px;transition:background .1s;display:flex}.mention-item:hover,.mention-item.active{background:#eef2ff}.mention-thumb{object-fit:cover;border-radius:6px;flex-shrink:0;width:36px;height:36px}.mention-file-icon{flex-shrink:0;justify-content:center;align-items:center;width:36px;height:36px;font-size:22px;display:flex}.mention-name{color:#374151;text-overflow:ellipsis;white-space:nowrap;font-size:14px;overflow:hidden}.chat-attach{cursor:pointer;color:#6b7280;background:#f3f4f6;border:1px solid #d1d5db;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;width:40px;font-size:20px;transition:all .15s;display:flex}.chat-attach:hover:not(:disabled){color:#4f46e5;background:#e5e7eb}.chat-attach:disabled{opacity:.4;cursor:not-allowed}.login-page{background:#f5f6fa;justify-content:center;align-items:center;height:100vh;display:flex}.login-card{background:#fff;border-radius:12px;width:360px;padding:40px;box-shadow:0 4px 24px #00000014}.login-card h2{color:#4f46e5;text-align:center;margin-bottom:28px;font-size:24px;font-weight:700}.login-card form{flex-direction:column;gap:14px;display:flex}.login-card input{background:#f9fafb;border:1px solid #d1d5db;border-radius:8px;outline:none;padding:10px 12px;font-family:inherit;font-size:14px;transition:border-color .15s}.login-card input:focus{border-color:#4f46e5;box-shadow:0 0 0 2px #4f46e51a}.login-card input:disabled{opacity:.5}.login-card button{color:#fff;cursor:pointer;background:#4f46e5;border:none;border-radius:8px;margin-top:4px;padding:10px;font-size:14px;font-weight:600;transition:background .15s}.login-card button:hover:not(:disabled){background:#4338ca}.login-card button:disabled{opacity:.4;cursor:not-allowed}.login-error{color:#dc2626;text-align:center;font-size:13px}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#d1d5db;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#9ca3af}