:root{--bg-primary:#0f172a;--bg-secondary:#162032;--bg-card:#1e293b;--bg-input:#0c1222;--bg-hover:#253248;--accent:#8b5cf6;--accent-hover:#7c3aed;--accent-dim:#8b5cf626;--text-primary:#e2e8f0;--text-secondary:#94a3b8;--text-muted:#64748b;--border:#334155;--border-light:#475569;--success:#10b981;--success-dim:#10b98126;--error:#ef4444;--error-dim:#ef444426;--warning:#f59e0b;--json-key:#67e8f9;--json-string:#86efac;--json-number:#c4b5fd;--json-boolean:#fdba74;--json-null:#94a3b8;--json-bracket:#fde047;--json-type:#94a3b8;--radius-sm:6px;--radius:10px;--radius-lg:14px;--shadow:0 4px 24px #0000004d;--shadow-lg:0 8px 40px #00000080;--transition:.2s cubic-bezier(.4,0,.2,1);--font-mono:"Cascadia Code","Fira Code","JetBrains Mono",Consolas,monospace}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;overflow:hidden}body{background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.6}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--border-light)}#app{flex-direction:column;height:100vh;max-height:100vh;display:flex}.header{background:var(--bg-card);border-bottom:1px solid var(--border);z-index:10;flex-shrink:0;justify-content:space-between;align-items:center;padding:14px 24px;display:flex}.header-brand{align-items:center;gap:12px;display:flex}.header-logo{color:var(--accent);filter:drop-shadow(0 0 12px 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14px;font-family:inherit;font-size:13px;font-weight:500;display:inline-flex}.btn:hover{background:var(--bg-hover);border-color:var(--border-light);transform:translateY(-1px)}.btn:active{transform:translateY(0)}.btn--primary{background:linear-gradient(135deg,var(--accent),#6d28d9);color:#fff;border-color:#0000;font-weight:600;box-shadow:0 2px 12px #8b5cf64d}.btn--primary:hover{background:linear-gradient(135deg,var(--accent-hover),#5b21b6);box-shadow:0 4px 18px #8b5cf666}.btn--success{background:var(--success);color:#fff;border-color:#0000;font-weight:600}.btn--success:hover{background:#059669}.btn--danger:hover{background:var(--error-dim);border-color:var(--error)}.btn-sm{font-size:13px}.btn-icon{justify-content:center;min-width:32px;padding:6px 8px}.btn svg{flex-shrink:0;width:16px;height:16px}.action-bar .separator{background:var(--border);width:1px;height:20px;margin:0 4px}.main{flex:1;gap:0;min-height:0;display:flex;position:relative}.panel{flex-direction:column;min-width:0;min-height:0;display:flex;position:relative}.panel--left{border-right:2px solid var(--border);flex:4.5}.panel--right{flex:5.5}.panel-header{background:var(--bg-card);border-bottom:1px solid var(--border);color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;flex-shrink:0;justify-content:space-between;align-items:center;padding:8px 16px;font-size:12px;font-weight:600;display:flex}.panel-header-left{align-items:center;gap:8px;display:flex}.panel-body{flex:1;min-height:0;position:relative;overflow:hidden}.divider{cursor:col-resize;background:var(--border);width:4px;transition:background var(--transition);z-index:5;flex-shrink:0;position:relative}.divider:hover,.divider.dragging{background:var(--accent)}.divider:after{content:"";background:var(--text-muted);opacity:0;width:2px;height:24px;transition:opacity var(--transition);border-radius:1px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.divider:hover:after{opacity:1}.monaco-container{width:100%;height:100%;position:absolute;top:0;left:0}.fallback-editor{width:100%;height:100%;font-family:var(--font-mono);color:var(--text-primary);background:var(--bg-input);resize:none;tab-size:2;border:none;outline:none;padding:16px 20px;font-size:14px;line-height:1.7}.fallback-editor::placeholder{color:var(--text-muted)}.monaco-loading-badge{z-index:10;color:var(--text-muted);background:var(--bg-card);border:1px solid var(--border);pointer-events:none;border-radius:12px;align-items:center;gap:6px;padding:4px 10px;font-size:11px;transition:opacity .3s;display:flex;position:absolute;top:8px;right:12px}.monaco-loading-badge .spinner{border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;width:12px;height:12px;animation:.8s linear infinite spin}.monaco-loading-badge.loaded{opacity:0;transition:opacity .3s 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16px;font-size:12px}.table-empty{text-align:center;min-height:200px;color:var(--text-secondary);justify-content:center;align-items:center;padding:32px;font-size:14px;line-height:1.8;display:flex}.error-box{background:var(--error-dim);border-radius:var(--radius);border:1px solid #ef44444d;margin:16px;padding:16px 20px;font-size:13px}.error-box-title{color:var(--error);margin-bottom:8px;font-size:14px;font-weight:600}.error-box-detail{color:var(--text-secondary);line-height:1.8}.error-box-detail span{color:var(--warning);font-weight:500}.valid-box{background:var(--success-dim);border-radius:var(--radius);color:var(--success);border:1px solid #10b9814d;margin:16px;padding:12px 20px;font-size:13px;font-weight:500}.output-loading{flex-direction:column;justify-content:center;align-items:center;gap:16px;height:100%;min-height:200px;display:flex}.loading-spinner{border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;width:36px;height:36px;animation:.8s linear infinite 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var(--border);border-radius:var(--radius);color:var(--text-primary);box-shadow:var(--shadow-lg);pointer-events:auto;align-items:center;gap:8px;max-width:360px;padding:12px 20px;font-size:13px;animation:.3s toast-in;display:flex}.toast--success{border-color:var(--success);border-left:3px solid var(--success)}.toast--error{border-color:var(--error);border-left:3px solid var(--error)}.toast--removing{animation:.2s forwards toast-out}@keyframes toast-in{0%{opacity:0;transform:translate(40px)}to{opacity:1;transform:translate(0)}}@keyframes toast-out{to{opacity:0;transform:translate(40px)}}.history-panel{border-top:1px solid var(--border);flex-direction:column;flex-shrink:0;max-height:160px;display:flex}.history-header{cursor:pointer;color:var(--text-secondary);user-select:none;justify-content:space-between;align-items:center;padding:8px 16px;font-size:12px;font-weight:500;display:flex}.history-header:hover{background:var(--bg-hover)}.history-header svg{transition:transform var(--transition)}.history-header.collapsed svg{transform:rotate(-90deg)}.history-list{flex:1;min-height:0;overflow-y:auto}.history-item{font-size:12px;font-family:var(--font-mono);color:var(--text-secondary);cursor:pointer;transition:background var(--transition);justify-content:space-between;align-items:center;padding:6px 16px;display:flex}.history-item:hover{background:var(--bg-hover);color:var(--text-primary)}.history-item-preview{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;overflow:hidden}.history-item-time{color:var(--text-muted);flex-shrink:0;margin:0 8px;font-size:10px}.history-item-del{color:var(--text-muted);cursor:pointer;opacity:0;transition:all var(--transition);background:0 0;border:none;border-radius:3px;padding:2px 6px;font-size:14px;line-height:1}.history-item:hover .history-item-del{opacity:1}.history-item-del:hover{color:var(--error);background:var(--error-dim)}.history-empty{color:var(--text-muted);text-align:center;padding:12px 16px;font-size:12px}.drop-overlay{z-index:100;border:3px dashed var(--accent);pointer-events:none;backdrop-filter:blur(2px);background:#8b5cf60f;justify-content:center;align-items:center;display:none;position:fixed;inset:0}.drop-overlay.active{display:flex}.drop-hint{background:var(--bg-card);border-radius:var(--radius-lg);text-align:center;box-shadow:var(--shadow-lg);padding:32px 48px}.drop-hint svg{width:48px;height:48px;color:var(--accent);margin-bottom:12px}.drop-hint p{color:var(--text-primary);font-size:16px;font-weight:600}.toolbox-section{border-top:1px solid var(--border);flex-shrink:0;padding:16px 20px}.toolbox-title{color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px;font-size:12px;font-weight:600}.toolbox-grid{flex-wrap:wrap;gap:6px;display:flex}.toolbox-chip{border:1px solid var(--border);background:var(--bg-card);color:var(--text-muted);cursor:default;transition:all var(--transition);border-radius:20px;padding:5px 12px;font-size:11px;position:relative}.toolbox-chip:after{content:"Soon";background:var(--accent-dim);color:var(--accent);border-radius:6px;margin-left:4px;padding:1px 5px;font-size:9px}@media (width<=900px){.main{flex-direction:column}.panel--left{border-right:none;border-bottom:2px solid var(--border);flex:0 0 40%}.panel--right{flex:1}.divider{display:none}.header{padding:10px 16px}.header-title{font-size:17px}.header-logo{font-size:22px}.action-bar{gap:4px;padding:8px 12px}.btn{padding:6px 12px;font-size:12px}.tab{padding:8px 14px;font-size:12px}.footer{gap:12px;padding:6px 12px}.toolbox-section{display:none}}@media (width<=500px){.panel--left{flex:0 0 35%}.header-subtitle,.header-badge,.btn span.btn-label{display:none}.btn-icon span.btn-label{display:inline}}