:root{--bg-base: #000000;--bg-surface: #09090b;--bg-elevated: #18181b;--bg-hover: rgba(255, 255, 255, .05);--bg-active: rgba(255, 255, 255, .1);--accent: #ededed;--accent-2: #ffffff;--accent-glow: rgba(255, 255, 255, .15);--accent-subtle: rgba(255, 255, 255, .1);--accent-border: rgba(255, 255, 255, .2);--border: rgba(255, 255, 255, .1);--border-strong: rgba(255, 255, 255, .15);--text-1: #fafafa;--text-2: #a1a1aa;--text-3: #71717a;--text-code: #e4e4e7;--green: #10b981;--amber: #f59e0b;--red: #ef4444;--teal: #14b8a6;--font-ui: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;--topbar-h: 46px;--sidebar-w: 210px;--ai-panel-w: 480px;--bottom-h: 260px;--r-sm: 4px;--r-md: 6px;--r-lg: 10px;--t-fast: .12s ease;--t-base: .2s cubic-bezier(.4, 0, .2, 1);--t-slow: .3s cubic-bezier(.4, 0, .2, 1)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;overflow:hidden;background:var(--bg-base);color:var(--text-1);font-family:var(--font-ui);font-size:13px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:99px}::-webkit-scrollbar-thumb:hover{background:#ffffff2e}#app{display:grid;height:100vh;width:100vw;overflow:hidden;grid-template-rows:var(--topbar-h) 1fr;grid-template-columns:var(--sidebar-w) 1fr var(--ai-panel-w);grid-template-areas:"topbar  topbar  topbar" "sidebar editor  ai";position:relative}#app:before{content:"";position:fixed;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent 0%,rgba(255,255,255,.4) 50%,transparent 100%);z-index:9999}#topbar{grid-area:topbar;display:flex;align-items:center;gap:8px;padding:0 12px;background:var(--bg-surface);border-bottom:1px solid var(--border);z-index:100;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}.topbar-logo{display:flex;align-items:center;gap:8px;text-decoration:none;flex-shrink:0}.topbar-brand{font-family:var(--font-ui);font-weight:700;font-size:14px;letter-spacing:-.02em;color:var(--text-1);white-space:nowrap}.topbar-brand span{color:var(--accent-2)}.topbar-divider{width:1px;height:16px;background:var(--border);flex-shrink:0}#active-file-pill{display:flex;align-items:center;gap:6px;padding:3px 10px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--r-md);font-family:var(--font-mono);font-size:11px;color:var(--text-2);max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;transition:var(--t-fast)}#active-file-pill:hover{border-color:var(--border-strong);color:var(--text-1)}.lang-dot{width:6px;height:6px;border-radius:50%;background:var(--accent-2);flex-shrink:0}.topbar-spacer{flex:1}.topbar-actions{display:flex;align-items:center;gap:6px}.btn{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--border);border-radius:var(--r-md);padding:5px 12px;font-family:var(--font-ui);font-size:12px;font-weight:500;cursor:pointer;transition:var(--t-fast);white-space:nowrap;outline:none;color:var(--text-2);background:var(--bg-elevated);text-decoration:none}.btn:hover{color:var(--text-1);border-color:var(--border-strong);background:var(--bg-active)}.btn:active{transform:translateY(1px)}.btn:disabled,.btn[disabled]{opacity:.4;cursor:not-allowed;pointer-events:none}.btn svg{width:13px;height:13px;flex-shrink:0}.btn-primary{background:var(--text-1);border-color:transparent;color:#000}.btn-primary:hover{background:#fff;border-color:transparent;box-shadow:0 0 15px var(--accent-glow);color:#000}.btn-run{background:var(--text-1);border-color:transparent;color:#000;font-weight:600}.btn-run:hover{background:#fff;border-color:transparent;box-shadow:0 0 0 1px var(--accent-border),0 0 15px var(--accent-glow);color:#000}.btn-run.running{background:var(--bg-elevated);color:var(--red);border-color:var(--red)}.btn-ghost{background:transparent;border-color:transparent;color:var(--text-2)}.btn-ghost:hover{background:var(--bg-hover);border-color:transparent;color:var(--text-1)}.icon-btn{width:28px;height:28px;padding:0;display:flex;align-items:center;justify-content:center;background:transparent;border:1px solid transparent;border-radius:var(--r-sm);color:var(--text-3);cursor:pointer;transition:var(--t-fast)}.icon-btn:hover{background:var(--bg-hover);border-color:var(--border);color:var(--text-2)}.icon-btn svg{width:14px;height:14px}.icon-btn-sm{width:22px;height:22px;padding:0;display:flex;align-items:center;justify-content:center;background:transparent;border:1px solid transparent;border-radius:var(--r-sm);color:var(--text-3);cursor:pointer;transition:var(--t-fast)}.icon-btn-sm:hover{background:var(--bg-hover);border-color:var(--border);color:var(--text-2)}.icon-btn-sm svg{width:12px;height:12px}.btn-send{background:var(--text-1);border-color:transparent;color:#000;font-size:12px;padding:5px 14px;font-weight:600}.btn-send:hover{background:#fff;border-color:transparent;color:#000}.btn-send:disabled,.btn-send[disabled]{opacity:.4;cursor:not-allowed;pointer-events:none}.spinner{width:11px;height:11px;border:1.5px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .6s linear infinite;display:none;flex-shrink:0}.running .spinner{display:block}.running .run-icon{display:none}@keyframes spin{to{transform:rotate(360deg)}}#file-tree-sidebar{grid-area:sidebar;display:flex;flex-direction:column;background:var(--bg-surface);border-right:1px solid var(--border);overflow:hidden;user-select:none}.sidebar-header{display:flex;align-items:center;padding:0 8px 0 12px;height:36px;border-bottom:1px solid var(--border);flex-shrink:0}.sidebar-label{font-size:10px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--text-3);flex:1}.sidebar-actions{display:flex;gap:2px}.file-tree{flex:1;overflow-y:auto;padding:4px 0}.file-tree-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;padding:24px 16px;gap:10px;color:var(--text-3);font-size:12px;text-align:center}.file-tree-file{display:flex;align-items:center;gap:6px;padding:4px 8px 4px 16px;cursor:pointer;color:var(--text-2);font-size:12px;font-family:var(--font-ui);border-radius:0;transition:background var(--t-fast),color var(--t-fast);white-space:nowrap;overflow:hidden}.file-tree-file:hover{background:var(--bg-hover);color:var(--text-1)}.file-tree-file.active{background:var(--bg-elevated);color:var(--text-1);border-right:2px solid var(--text-1)}.file-icon{font-size:13px;flex-shrink:0}.file-name{overflow:hidden;text-overflow:ellipsis}.file-tree-folder{display:flex;align-items:center;gap:5px;padding:4px 8px;cursor:pointer;color:var(--text-2);font-size:12px;font-family:var(--font-ui);transition:background var(--t-fast);white-space:nowrap;font-weight:500}.file-tree-folder:hover{background:var(--bg-hover);color:var(--text-1)}.file-tree-file:hover .delete-file-btn{opacity:1!important;color:var(--red)!important}.delete-file-btn{transition:var(--t-fast)}.folder-toggle{font-size:9px;width:10px;color:var(--text-3);flex-shrink:0}.folder-icon{font-size:13px;flex-shrink:0}.folder-name{overflow:hidden;text-overflow:ellipsis}#editor-area{grid-area:editor;display:flex;flex-direction:column;overflow:hidden;background:var(--bg-base)}#empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;user-select:none}#editor-pane{flex:1;min-height:0;display:flex;flex-direction:column;overflow:hidden}#editor-breadcrumb{height:28px;display:flex;align-items:center;padding:0 14px;gap:4px;background:var(--bg-surface);border-bottom:1px solid var(--border);flex-shrink:0;font-family:var(--font-mono);font-size:11px;overflow:hidden}.bc-dir{color:var(--text-3)}.bc-sep{color:var(--text-3);padding:0 1px}.bc-file{color:var(--text-2);font-weight:500}#editor-container{flex:1;min-height:0;overflow:hidden}#panel-resize-handle{height:3px;flex-shrink:0;cursor:row-resize;background:var(--border);position:relative;z-index:10;transition:background var(--t-fast)}#panel-resize-handle:hover,#panel-resize-handle.dragging{background:var(--accent)}#bottom-pane{height:var(--bottom-h);flex-shrink:0;display:flex;flex-direction:column;overflow:hidden;background:var(--bg-surface);transition:height var(--t-slow)}#bottom-pane.collapsed{height:36px}#bottom-pane.maximized{height:calc(100vh - var(--topbar-h) - 36px)!important}#output-panel{display:flex;flex-direction:column;flex:1;min-height:0;overflow:hidden}.pane-header{display:flex;align-items:center;height:36px;flex-shrink:0;background:var(--bg-surface);border-bottom:1px solid var(--border);padding:0 8px 0 0}.pane-tabs{display:flex;align-items:stretch;height:100%;flex:1;overflow:hidden}.pane-tab{display:flex;align-items:center;gap:5px;padding:0 14px;font-size:12px;font-weight:500;color:var(--text-3);background:transparent;border:none;border-bottom:2px solid transparent;cursor:pointer;white-space:nowrap;transition:color var(--t-fast),border-color var(--t-fast);font-family:var(--font-ui)}.pane-tab:hover{color:var(--text-2)}.pane-tab.active{color:var(--text-1);border-bottom-color:var(--text-1)}.pane-actions{display:flex;align-items:center;gap:2px;padding:0 4px}.pane-sep{width:1px;height:14px;background:var(--border);margin:0 4px}.output-content{flex:1;min-height:0;overflow:hidden;display:flex;flex-direction:column}.output-lines{flex:1;overflow-y:auto;padding:8px 14px;font-family:var(--font-mono);font-size:12px;line-height:1.7}.output-empty{color:var(--text-3);font-size:12px;padding:8px 0;font-style:italic}.output-line{white-space:pre-wrap;word-break:break-all;animation:line-in .12s ease}.output-line.stdout{color:var(--text-code)}.output-line.stderr{color:var(--red)}.output-line.info{color:var(--green)}.output-line.warn{color:var(--amber)}.output-line.done{color:var(--teal);font-weight:600}@keyframes line-in{0%{opacity:0;transform:translate(-3px)}to{opacity:1;transform:none}}#preview-container{display:none;flex:1;flex-direction:column;min-height:0;overflow:hidden;background:#fff}#preview-container.visible{display:flex}.preview-frame-container{flex:1;display:flex;flex-direction:column;min-height:0;overflow:hidden}#preview-frame{flex:1;width:100%;border:none;min-height:0;display:block;background:#fff}#preview-errors{display:none}#ai-panel{grid-area:ai;display:flex;flex-direction:column;background:var(--bg-surface);border-left:1px solid var(--border);overflow:hidden;position:relative;min-width:0}.welcome-overlay{position:fixed;inset:0;background:#0006;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);display:flex;align-items:center;justify-content:center;z-index:99999;opacity:0;animation:fade-in .6s ease forwards}.welcome-modal{background:var(--bg-surface);border:1px solid var(--border-strong);border-radius:var(--r-lg);width:420px;padding:36px;box-shadow:0 30px 60px #0009,0 0 0 1px #ffffff0d;transform:translateY(30px) scale(.95);opacity:0;animation:slide-up .8s cubic-bezier(.16,1,.3,1) .1s forwards;display:flex;flex-direction:column;gap:24px}.welcome-title{font-size:20px;font-weight:600;color:var(--text-1);letter-spacing:-.03em;display:flex;align-items:center;gap:12px}.welcome-desc{font-size:13.5px;color:var(--text-2);line-height:1.6}.welcome-input-wrap{position:relative;display:flex}.welcome-input{width:100%;background:var(--bg-base);border:1px solid var(--border-strong);border-radius:var(--r-md);padding:12px 16px;color:var(--text-1);font-family:var(--font-mono);font-size:14px;outline:none;transition:var(--t-fast)}.welcome-input:focus{border-color:var(--text-1);box-shadow:0 0 0 1px var(--text-1)}.welcome-btn{width:100%;padding:12px;background:var(--text-1);color:#000;border:none;border-radius:var(--r-md);font-weight:600;font-size:14px;cursor:pointer;transition:var(--t-fast)}.welcome-btn:hover{background:#fff;box-shadow:0 0 20px #ffffff26}@keyframes fade-in{to{opacity:1}}@keyframes fade-out{to{opacity:0}}@keyframes slide-up{to{opacity:1;transform:translateY(0) scale(1)}}@keyframes slide-down{to{opacity:0;transform:translateY(10px) scale(.98)}}.shake{animation:horizontal-shake .4s}@keyframes horizontal-shake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}50%{transform:translate(5px)}75%{transform:translate(-5px)}}#ai-resize-handle{position:absolute;top:0;left:0;bottom:0;width:4px;cursor:col-resize;z-index:20;background:transparent;transition:background var(--t-fast)}#ai-resize-handle:hover,#ai-resize-handle.dragging{background:var(--accent)}.ai-panel-header{display:flex;align-items:center;gap:8px;padding:0 12px 0 18px;height:44px;border-bottom:1px solid var(--border);flex-shrink:0}.ai-panel-title{font-size:12px;font-weight:600;color:var(--text-2);letter-spacing:.02em;flex:1}.ai-status-dot{width:6px;height:6px;border-radius:50%;background:var(--text-3);transition:background .3s}.ai-status-dot.active{background:var(--green);box-shadow:0 0 6px var(--green);animation:pulse-dot 1.5s ease-in-out infinite}@keyframes pulse-dot{0%,to{opacity:1}50%{opacity:.4}}.ai-chat-history{flex:1;overflow-y:auto;padding:10px;display:flex;flex-direction:column;gap:10px}.chat-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:12px;opacity:.5}.chat-empty-icon{width:36px;height:36px;color:var(--accent-2);opacity:.7}.chat-empty p{font-size:12px;color:var(--text-3);text-align:center;line-height:1.6}.chat-bubble{border-radius:var(--r-lg);padding:10px 12px;font-size:12.5px;line-height:1.6;animation:bubble-in .18s ease;max-width:100%;word-break:break-word}@keyframes bubble-in{0%{opacity:0;transform:translateY(5px)}to{opacity:1;transform:none}}.chat-bubble.user{background:var(--accent-subtle);border:1px solid var(--accent-border);color:var(--text-1);align-self:flex-end;max-width:88%}.chat-bubble.assistant{background:var(--bg-elevated);border:1px solid var(--border);color:var(--text-2);align-self:flex-start;width:100%}.chat-bubble.streaming:after{content:"▋";color:var(--accent-2);animation:blink .8s step-end infinite}@keyframes blink{0%,to{opacity:1}50%{opacity:0}}.bubble-role{font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent-2);margin-bottom:4px}.chat-bubble pre{background:#00000059;border:1px solid var(--border);border-radius:var(--r-sm);padding:10px;overflow-x:auto;margin-top:8px;font-family:var(--font-mono);font-size:11px}.chat-bubble code{background:#0000004d;padding:1px 5px;border-radius:3px;font-family:var(--font-mono);font-size:11px}.apply-btn{margin-top:8px;width:100%;background:#22c55e14;border:1px solid rgba(34,197,94,.3);border-radius:var(--r-sm);color:var(--green);font-size:11.5px;padding:5px 10px;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:5px;font-family:var(--font-ui);font-weight:500;transition:var(--t-fast)}.apply-btn:hover{background:#22c55e26}.apply-project-btn{background:#f59e0b14;border-color:#f59e0b4d;color:var(--amber);font-weight:600}.apply-project-btn:hover{background:#f59e0b26}.ai-input-wrap{padding:8px 10px;border-top:1px solid var(--border);flex-shrink:0}#ai-textarea{width:100%;min-height:64px;max-height:120px;resize:vertical;background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--r-md);color:var(--text-1);font-family:var(--font-mono);font-size:12px;line-height:1.5;padding:8px 10px;outline:none;transition:border-color var(--t-fast)}#ai-textarea:focus{border-color:var(--accent-border)}#ai-textarea::placeholder{color:var(--text-3)}.ai-input-footer{display:flex;justify-content:flex-end;margin-top:6px}.modal-overlay{position:fixed;inset:0;background:#0006;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);z-index:1000;display:flex;align-items:center;justify-content:center;opacity:0;animation:fade-in .4s ease forwards}.modal{background:var(--bg-surface);border:1px solid var(--border-strong);border-radius:var(--r-lg);padding:32px;width:480px;max-width:94vw;max-height:88vh;overflow-y:auto;box-shadow:0 30px 60px #0009,0 0 0 1px #ffffff0d;transform:translateY(20px) scale(.96);opacity:0;animation:slide-up .6s cubic-bezier(.16,1,.3,1) forwards}.modal-title{font-size:20px;font-weight:600;margin-bottom:24px;color:var(--text-1);letter-spacing:-.03em}.form-group{margin-bottom:20px}.form-label{display:block;font-size:13px;font-weight:500;color:var(--text-2);margin-bottom:8px}.form-input,.form-select{width:100%;background:var(--bg-base);border:1px solid var(--border-strong);border-radius:var(--r-md);color:var(--text-1);font-family:var(--font-mono);font-size:14px;padding:10px 14px;outline:none;transition:var(--t-fast)}.form-input:focus,.form-select:focus{border-color:var(--text-1);box-shadow:0 0 0 1px var(--text-1)}.form-select{cursor:pointer}.form-input-wrap{position:relative}.form-input-wrap .form-input{padding-right:36px}.show-hide-btn{position:absolute;right:10px;top:50%;transform:translateY(-50%);background:none;border:none;color:var(--text-3);cursor:pointer;font-size:12px}.modal-footer{display:flex;gap:8px;justify-content:flex-end;margin-top:20px;padding-top:16px;border-top:1px solid var(--border)}#viewer-banner{display:none;position:fixed;bottom:16px;left:50%;transform:translate(-50%);background:var(--bg-elevated);border:1px solid var(--accent-border);border-radius:var(--r-lg);padding:10px 18px;box-shadow:0 0 24px var(--accent-glow);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);z-index:200;align-items:center;gap:10px;font-size:13px;color:var(--text-2);animation:fade-in .2s ease}#viewer-banner.hidden{display:none!important}.fork-btn{font-size:12px;padding:4px 12px}.url-preview-box{background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--r-md);padding:10px 12px;font-family:var(--font-mono);font-size:11px;color:var(--text-3);word-break:break-all;max-height:80px;overflow-y:auto;margin-bottom:10px}.size-ok{color:var(--green);font-size:11px;margin-bottom:10px}.size-warn{color:var(--amber);font-size:11px;margin-bottom:10px}#wallet-textarea{width:100%;min-height:80px;resize:vertical;background:var(--bg-surface);border:1px solid var(--border);border-radius:var(--r-sm);color:var(--text-code);font-family:var(--font-mono);font-size:11px;padding:8px;outline:none}#wallet-textarea:focus{border-color:var(--accent-border)}.arlink-result{font-family:var(--font-mono);font-size:12px;color:var(--teal);word-break:break-all;display:none}.hidden{display:none!important}.text-muted{color:var(--text-3)}.text-success{color:var(--green)}.text-error{color:var(--red)}[data-tooltip]{position:relative}[data-tooltip]:hover:after{content:attr(data-tooltip);position:absolute;bottom:calc(100% + 5px);left:50%;transform:translate(-50%);background:var(--bg-elevated);border:1px solid var(--border-strong);border-radius:var(--r-sm);color:var(--text-2);font-size:11px;white-space:nowrap;padding:3px 8px;z-index:99;pointer-events:none}@media (max-width: 900px){:root{--sidebar-w: 0px;--ai-panel-w: 0px}#file-tree-sidebar,#ai-panel{display:none}#app{grid-template-columns:1fr;grid-template-rows:var(--topbar-h) 1fr;grid-template-areas:"topbar" "editor"}}