:root {
  --bg: #0F1219;
  --bg-card: #191D2B;
  --text: #C8D0E0;
  --text-sec: #8890A8;
  --text-muted: #4A5068;
  --primary: #6366F1;
  --secondary: #818CF8;
  --accent: #F59E0B;
  --green: #34D399;
  --red: #F87171;
  --border: rgba(99,102,241,0.06);
  --radius: 12px;
  --font: 'Inter',system-ui,sans-serif;
  --mono: 'JetBrains Mono',monospace;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh}

.header{display:flex;align-items:center;justify-content:space-between;padding:8px 14px;background:var(--bg-card);border-bottom:1px solid var(--border)}
.header h1{font-size:.88rem;font-weight:700;color:var(--primary)}
.header-right{display:flex;align-items:center;gap:6px}
.match-count{font-size:.66rem;color:var(--accent);font-weight:600}

.btn{padding:4px 10px;border:1px solid var(--border);border-radius:8px;background:transparent;color:var(--text-sec);font-family:var(--font);font-size:.66rem;cursor:pointer;transition:.2s}
.btn:hover{border-color:var(--primary);color:var(--primary)}
.btn.primary{background:var(--primary);color:#fff;border:none;font-weight:600}

.app{max-width:900px;margin:0 auto;padding:12px}

.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:12px;margin-bottom:8px}
.card h2{font-size:.6rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.04em;margin-bottom:6px}

.input{width:100%;padding:6px 8px;border:1px solid var(--border);border-radius:8px;background:rgba(255,255,255,.02);color:var(--text);font-family:var(--font);font-size:.72rem}
.input.code{font-family:var(--mono);font-size:.66rem;line-height:1.5}
.input:focus{outline:none;border-color:var(--primary)}

.xpath-row{display:flex;gap:6px}
.xpath-row .input{flex:1}

.split{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.split-pane{min-height:200px}

.results-area{font-family:var(--mono);font-size:.64rem;line-height:1.6;max-height:400px;overflow-y:auto;padding:4px}

.match-node{background:rgba(99,102,241,.08);border:1px solid rgba(99,102,241,.15);border-radius:6px;padding:4px 8px;margin-bottom:4px;cursor:pointer;transition:.15s}
.match-node:hover{background:rgba(99,102,241,.12)}
.match-node.active{border-color:var(--accent);background:rgba(245,158,11,.06)}
.match-tag{color:var(--primary);font-weight:600;font-size:.62rem}
.match-text{color:var(--text-sec);font-size:.62rem}

.node-detail{font-size:.66rem}
.node-detail table{width:100%;border-collapse:collapse}
.node-detail th,.node-detail td{padding:3px 8px;text-align:left;border-bottom:1px solid var(--border);font-size:.62rem}
.node-detail th{color:var(--text-muted);font-weight:500}
.node-detail td{color:var(--text-sec);font-family:var(--mono)}

.error-msg{color:var(--red);font-size:.68rem;padding:8px}

@media(max-width:600px){.split{grid-template-columns:1fr}}