@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--primary:#6366F1;--secondary:#94A3B8;--accent:#22D3EE;--bg:#0F172A;--surface:#1E293B;--surface2:#334155;--text:#E2E8F0;--text-dim:#94A3B8;--border:#334155;--font:'Inter',system-ui,sans-serif}
html{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6}
body{min-height:100vh;display:flex;flex-direction:column}
.header{padding:.65rem 1rem;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);flex-wrap:wrap;gap:.4rem}
.header h1{font-size:.95rem;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.ha{display:flex;gap:.3rem}
.btn{padding:.3rem .6rem;border-radius:8px;font-size:.68rem;font-weight:600;cursor:pointer;border:none;transition:all .15s;font-family:var(--font)}
.btn-p{background:var(--primary);color:#fff}.btn-p:hover{opacity:.85}
.btn-g{background:transparent;border:1px solid var(--border);color:var(--text-dim)}.btn-g:hover{background:var(--surface2);color:var(--text)}
.main{flex:1;display:grid;grid-template-columns:250px 1fr 200px;gap:0;overflow:hidden}
.editor-panel{display:flex;flex-direction:column;border-right:1px solid var(--border)}
.panel-hd{padding:.3rem .6rem;background:var(--surface);border-bottom:1px solid var(--border);font-size:.68rem;font-weight:700;color:var(--text-dim);display:flex;justify-content:space-between;align-items:center}
.hint{font-size:.55rem;color:var(--text-dim);font-weight:400}
.editor{flex:1;padding:.4rem;background:var(--bg);color:var(--text);font-family:'Courier New',monospace;font-size:.72rem;border:none;outline:none;resize:none;line-height:1.5;tab-size:2}
.stats-bar{padding:.25rem .5rem;border-top:1px solid var(--border);font-size:.6rem;color:var(--text-dim);background:var(--surface);display:flex;gap:.5rem}
.stats-bar span{font-weight:600;color:var(--accent)}
.tree-panel{display:flex;flex-direction:column;overflow:auto}
.tree-wrap{flex:1;padding:.5rem;overflow:auto}
.info-panel{border-left:1px solid var(--border);display:flex;flex-direction:column;overflow-y:auto}
#info-content{padding:.4rem;font-size:.7rem}
.placeholder{color:var(--text-dim);font-size:.68rem}
/* Tree nodes */
.tree-node{padding-left:16px;position:relative}
.tree-node::before{content:'';position:absolute;left:6px;top:0;bottom:0;width:1px;background:var(--border)}
.node-head{display:flex;align-items:center;gap:4px;padding:2px 4px;border-radius:4px;cursor:pointer;font-size:.68rem;transition:all .15s}
.node-head:hover{background:rgba(99,102,241,.1)}
.node-head.selected{background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.3)}
.node-toggle{width:14px;height:14px;border-radius:3px;border:none;background:transparent;color:var(--text-dim);font-size:.6rem;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.tag-name{color:var(--primary);font-weight:700;font-family:monospace;font-size:.68rem}
.tag-attrs{color:var(--accent);font-size:.6rem;font-family:monospace}
.tag-text{color:var(--text-dim);font-size:.6rem;font-style:italic;max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.node-children{display:block}.node-children.collapsed{display:none}
/* Info */
.info-row{display:flex;gap:.3rem;padding:.15rem 0;border-bottom:1px solid rgba(51,65,85,.5);font-size:.65rem}
.info-label{font-weight:600;color:var(--text-dim);min-width:60px}.info-value{color:var(--text);word-break:break-all;font-family:monospace;font-size:.62rem}
.toast{position:fixed;bottom:1.5rem;right:1.5rem;background:var(--surface);border:1px solid var(--primary);color:var(--primary);padding:.4rem .8rem;border-radius:8px;font-size:.7rem;z-index:200;transform:translateY(80px);opacity:0;transition:all .3s}
.toast.show{transform:translateY(0);opacity:1}
@media(max-width:768px){.main{grid-template-columns:1fr;grid-template-rows:auto 1fr auto}}