.xf-app{display:flex;flex-direction:column;height:100%;background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);overflow:hidden;}.xf-header{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;background:var(--surface);border-bottom:1px solid var(--border);gap:12px;flex-wrap:wrap;}.xf-header-left{display:flex;align-items:center;gap:8px;}.xf-header-right{display:flex;align-items:center;gap:8px;}.xf-title{font-size:15px;font-weight:700;color:var(--text);}.xf-main{display:grid;grid-template-columns:1fr 1fr;gap:0;flex:1;overflow:hidden;}.xf-panel{display:flex;flex-direction:column;overflow:hidden;min-height:0;}.xf-panel:first-child{border-right:1px solid var(--border);}.xf-panel-header{display:flex;align-items:center;justify-content:space-between;padding:8px 16px;border-bottom:1px solid var(--border);background:var(--surface-2);}.xf-panel-title{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:0.5px;color:var(--text-muted);}.xf-panel-actions{display:flex;gap:6px;}.xf-textarea{width:100%;flex:1;background:var(--bg);color:var(--text);border:none;padding:16px;font-family:var(--font-mono);font-size:13px;line-height:1.7;resize:none;outline:none;tab-size:2;min-height:0;}.xf-textarea::placeholder{color:var(--text-muted);opacity:0.5;}.xf-output-wrap{flex:1;overflow:auto;background:var(--bg);}pre.xf-output{padding:16px;font-family:var(--font-mono);font-size:13px;line-height:1.7;white-space:pre-wrap;word-break:break-all;color:var(--text);min-height:100%;margin:0;}.xf-status-bar{padding:6px 16px;border-top:1px solid var(--border);background:var(--surface-2);display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--text-muted);}.xf-error{color:var(--red);font-style:italic;}.xf-valid{color:var(--green);}.xf-syn-tag{color:var(--syn-keyword);}.xf-syn-attr{color:var(--syn-field);}.xf-syn-val{color:var(--syn-string);}.xf-syn-comment{color:var(--syn-comment);font-style:italic;}.xf-empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--text-muted);gap:8px;padding:40px;text-align:center;}.xf-empty-state svg{opacity:0.3;margin-bottom:8px;}.xf-empty-state p{font-size:14px;}.xf-empty-state .xf-hint{font-size:12px;opacity:0.6;}@media (max-width:768px){.xf-main{grid-template-columns:1fr;grid-template-rows:1fr 1fr;}.xf-panel:first-child{border-right:none;border-bottom:1px solid var(--border);}}