*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0f0f0f;--surface: #1a1a1a;--surface2: #242424;--surface3: #2e2e2e;--border: #333;--text: #e8e8e8;--text-muted: #888;--accent: #7c6af7;--accent-hover: #9585f9;--accent-dim: rgba(124, 106, 247, .15);--danger: #e05252;--success: #4caf7d;--sidebar-width: 260px;--sidebar-collapsed: 64px;--input-height: 56px;--radius: 12px;--radius-sm: 8px;--transition: .2s ease}html,body,#root{height:100%;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}button{cursor:pointer;border:none;background:none;color:inherit;font:inherit}input,textarea{font:inherit;color:inherit;background:none;border:none;outline:none}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.app-layout{display:flex;height:100%;overflow:hidden}.sidebar{width:var(--sidebar-width);min-width:var(--sidebar-width);background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;transition:width var(--transition),min-width var(--transition);overflow:hidden}.sidebar.collapsed{width:var(--sidebar-collapsed);min-width:var(--sidebar-collapsed)}.sidebar-header{display:flex;align-items:center;gap:10px;padding:16px 12px;border-bottom:1px solid var(--border);min-height:60px}.sidebar-logo{width:32px;height:32px;border-radius:8px;background:var(--accent);display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;flex-shrink:0;color:#fff}.sidebar-title{font-weight:600;font-size:16px;white-space:nowrap;overflow:hidden}.sidebar-toggle{margin-left:auto;padding:4px;border-radius:6px;color:var(--text-muted);flex-shrink:0;transition:color var(--transition),background var(--transition)}.sidebar-toggle:hover{color:var(--text);background:var(--surface2)}.new-chat-btn{margin:12px;padding:10px 14px;background:var(--accent-dim);border:1px solid var(--accent);border-radius:var(--radius-sm);color:var(--accent);font-weight:500;display:flex;align-items:center;gap:8px;transition:background var(--transition);white-space:nowrap;overflow:hidden}.new-chat-btn:hover{background:#7c6af740}.new-chat-btn .btn-icon{flex-shrink:0;font-size:18px}.conv-list{flex:1;overflow-y:auto;padding:4px 8px}.conv-item{display:flex;align-items:center;gap:8px;padding:10px 8px;border-radius:var(--radius-sm);cursor:pointer;transition:background var(--transition);position:relative;overflow:hidden}.conv-item:hover{background:var(--surface2)}.conv-item.active{background:var(--accent-dim)}.conv-icon{flex-shrink:0;font-size:16px;color:var(--text-muted)}.conv-item.active .conv-icon{color:var(--accent)}.conv-title{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:14px}.conv-delete{opacity:0;padding:2px 4px;border-radius:4px;color:var(--text-muted);font-size:14px;transition:opacity var(--transition),color var(--transition)}.conv-item:hover .conv-delete{opacity:1}.conv-delete:hover{color:var(--danger)}.sidebar-footer{padding:12px;border-top:1px solid var(--border)}.settings-btn{width:100%;padding:10px 8px;border-radius:var(--radius-sm);display:flex;align-items:center;gap:8px;color:var(--text-muted);transition:background var(--transition),color var(--transition);white-space:nowrap;overflow:hidden}.settings-btn:hover{background:var(--surface2);color:var(--text)}.main-area{flex:1;display:flex;flex-direction:column;overflow:hidden;position:relative}.chat-area{flex:1;display:flex;flex-direction:column;overflow:hidden}.chat-header{padding:14px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:12px;min-height:56px}.chat-header-title{font-weight:600;font-size:15px;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.artifacts-toggle-btn{padding:6px 12px;border-radius:var(--radius-sm);background:var(--surface2);border:1px solid var(--border);font-size:13px;color:var(--text-muted);display:flex;align-items:center;gap:6px;transition:all var(--transition);white-space:nowrap}.artifacts-toggle-btn:hover{color:var(--text);border-color:var(--accent)}.artifacts-toggle-btn.has-artifacts{color:var(--accent);border-color:var(--accent)}.message-list{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:16px}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:var(--text-muted)}.empty-state-icon{font-size:48px;opacity:.4}.empty-state h2{font-size:20px;font-weight:600;color:var(--text)}.empty-state p{font-size:14px;text-align:center;max-width:320px}.message-bubble{display:flex;gap:12px;max-width:800px}.message-bubble.user{flex-direction:row-reverse;align-self:flex-end}.message-avatar{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;flex-shrink:0;background:var(--surface3)}.message-bubble.user .message-avatar{background:var(--accent);color:#fff}.message-bubble.assistant .message-avatar{background:var(--surface3)}.message-content{flex:1;min-width:0}.message-bubble.user .message-content{display:flex;flex-direction:column;align-items:flex-end}.message-images{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:8px}.message-image{max-width:200px;max-height:200px;border-radius:var(--radius-sm);object-fit:cover;border:1px solid var(--border)}.message-text{background:var(--surface2);padding:12px 16px;border-radius:var(--radius);font-size:14px;line-height:1.7;max-width:100%;word-break:break-word}.message-bubble.user .message-text{background:var(--accent);color:#fff;border-radius:var(--radius) var(--radius-sm) var(--radius) var(--radius)}.message-bubble.assistant .message-text{border-radius:var(--radius-sm) var(--radius) var(--radius) var(--radius)}.message-text p{margin-bottom:8px}.message-text p:last-child{margin-bottom:0}.message-text code{background:#0000004d;padding:2px 6px;border-radius:4px;font-family:Fira Code,Cascadia Code,monospace;font-size:13px}.message-bubble.user .message-text code{background:#0003}.message-text pre{background:#0006;padding:12px;border-radius:8px;overflow-x:auto;margin:8px 0}.message-text pre code{background:none;padding:0}.message-text ul,.message-text ol{padding-left:20px;margin:8px 0}.message-text li{margin-bottom:4px}.message-text h1,.message-text h2,.message-text h3{margin:12px 0 6px;font-weight:600}.message-text blockquote{border-left:3px solid var(--accent);padding-left:12px;color:var(--text-muted);margin:8px 0}.message-text table{border-collapse:collapse;width:100%;margin:8px 0}.message-text th,.message-text td{border:1px solid var(--border);padding:6px 10px;text-align:left}.message-text th{background:var(--surface3)}.typing-indicator{display:flex;gap:12px;max-width:800px}.typing-dots{display:flex;gap:4px;align-items:center;padding:12px 16px;background:var(--surface2);border-radius:var(--radius-sm) var(--radius) var(--radius) var(--radius)}.typing-dot{width:6px;height:6px;border-radius:50%;background:var(--text-muted);animation:bounce 1.2s infinite}.typing-dot:nth-child(2){animation-delay:.2s}.typing-dot:nth-child(3){animation-delay:.4s}@keyframes bounce{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-6px)}}.chat-input-area{padding:16px 20px;border-top:1px solid var(--border);background:var(--bg)}.image-previews{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px}.image-preview-item{position:relative}.image-preview-thumb{width:64px;height:64px;object-fit:cover;border-radius:var(--radius-sm);border:1px solid var(--border)}.image-preview-remove{position:absolute;top:-6px;right:-6px;width:18px;height:18px;border-radius:50%;background:var(--danger);color:#fff;font-size:11px;display:flex;align-items:center;justify-content:center;line-height:1}.input-row{display:flex;align-items:flex-end;gap:8px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:8px 12px;transition:border-color var(--transition)}.input-row:focus-within{border-color:var(--accent)}.input-attach-btn{padding:6px;border-radius:6px;color:var(--text-muted);flex-shrink:0;transition:color var(--transition)}.input-attach-btn:hover{color:var(--text)}.chat-textarea{flex:1;resize:none;background:none;min-height:24px;max-height:200px;overflow-y:auto;font-size:14px;line-height:1.6;padding:2px 0}.chat-textarea::placeholder{color:var(--text-muted)}.send-btn{width:36px;height:36px;border-radius:8px;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background var(--transition),opacity var(--transition)}.send-btn:hover{background:var(--accent-hover)}.send-btn:disabled{opacity:.4;cursor:not-allowed}.stop-btn{width:36px;height:36px;border-radius:8px;background:var(--surface3);border:1px solid var(--border);color:var(--text-muted);display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all var(--transition)}.stop-btn:hover{color:var(--danger);border-color:var(--danger)}.artifacts-panel{width:360px;min-width:360px;background:var(--surface);border-left:1px solid var(--border);display:flex;flex-direction:column;transform:translate(100%);transition:transform var(--transition);position:absolute;right:0;top:0;bottom:0;z-index:10}.artifacts-panel.open{transform:translate(0);position:relative}.artifacts-header{padding:14px 16px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:8px;min-height:56px}.artifacts-header h3{flex:1;font-size:14px;font-weight:600}.artifacts-close-btn{padding:4px;border-radius:6px;color:var(--text-muted);transition:all var(--transition)}.artifacts-close-btn:hover{color:var(--text);background:var(--surface2)}.artifacts-list{flex:1;overflow-y:auto;padding:12px;display:flex;flex-direction:column;gap:12px}.artifacts-empty{flex:1;display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:14px;text-align:center;padding:20px}.artifact-card{background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.artifact-card-header{padding:10px 12px;display:flex;align-items:center;gap:8px;border-bottom:1px solid var(--border)}.artifact-type-badge{font-size:11px;font-weight:600;padding:2px 8px;border-radius:20px;text-transform:uppercase;letter-spacing:.5px}.artifact-type-badge.image{background:#4caf7d26;color:var(--success)}.artifact-type-badge.video{background:#7c6af726;color:var(--accent)}.artifact-status{font-size:12px;color:var(--text-muted);margin-left:auto;display:flex;align-items:center;gap:4px}.artifact-status.success{color:var(--success)}.artifact-status.error{color:var(--danger)}.artifact-status.processing{color:var(--accent)}.artifact-card-body{padding:12px}.artifact-prompt{font-size:12px;color:var(--text-muted);margin-bottom:10px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.artifact-result-image,.artifact-result-video{width:100%;border-radius:var(--radius-sm);display:block}.artifact-progress{height:4px;background:var(--surface3);border-radius:2px;overflow:hidden;margin-top:8px}.artifact-progress-bar{height:100%;background:var(--accent);border-radius:2px;transition:width .5s ease}.artifact-error{font-size:12px;color:var(--danger);margin-top:6px}.artifact-spinner{display:inline-block;width:12px;height:12px;border:2px solid var(--accent);border-top-color:transparent;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:100;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;width:420px;max-width:calc(100vw - 32px)}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.modal-header h2{font-size:18px;font-weight:600}.modal-close{padding:4px;border-radius:6px;color:var(--text-muted);transition:all var(--transition)}.modal-close:hover{color:var(--text);background:var(--surface2)}.form-group{margin-bottom:16px}.form-label{display:block;font-size:13px;font-weight:500;color:var(--text-muted);margin-bottom:6px}.form-input{width:100%;background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 12px;font-size:14px;transition:border-color var(--transition)}.form-input:focus{border-color:var(--accent)}.form-hint{font-size:12px;color:var(--text-muted);margin-top:6px}.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:20px}.btn-primary{padding:9px 20px;background:var(--accent);color:#fff;border-radius:var(--radius-sm);font-weight:500;font-size:14px;transition:background var(--transition)}.btn-primary:hover{background:var(--accent-hover)}.btn-secondary{padding:9px 20px;background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius-sm);font-size:14px;transition:background var(--transition)}.btn-secondary:hover{background:var(--surface3)}@media (max-width: 768px){.sidebar{position:absolute;z-index:20;height:100%;transform:translate(-100%);transition:transform var(--transition)}.sidebar.mobile-open{transform:translate(0)}.sidebar.collapsed{width:var(--sidebar-width);min-width:var(--sidebar-width)}.artifacts-panel{width:100%;min-width:unset}}