:root {
  --bg: #120A1A;
  --bg-card: #1a1025;
  --bg-input: #0e0816;
  --text: #e8e0f0;
  --text-secondary: #a694b8;
  --text-muted: #7a6890;
  --primary: #9B59B6;
  --primary-light: #BE90D4;
  --accent: #F39C12;
  --accent-light: #f5b041;
  --border: rgba(155,89,182,0.12);
  --border-strong: rgba(155,89,182,0.25);
  --shadow: 0 4px 14px rgba(0,0,0,0.5);
  --radius: 12px;
  --font: 'Inter',-apple-system,sans-serif;
  --mono: 'JetBrains Mono',monospace;
  --transition: 0.25s ease;
  --glass: rgba(26,16,37,0.92);
  --msg-color: #9B59B6;
  --enum-color: #F39C12;
  --svc-color: #2ECC71;
  --scalar-color: #3498DB;
}

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

.header{background:var(--glass);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50}
.header-inner{max-width:100%;padding:10px 20px;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:8px}
.logo h1{font-size:1rem;font-weight:700;color:var(--primary-light)}
.header-actions{display:flex;align-items:center;gap:6px}
.search-input{padding:6px 12px;border:1px solid var(--border);border-radius:8px;background:var(--bg-input);color:var(--text);font-family:var(--font);font-size:0.8rem;width:180px;transition:border-color var(--transition)}
.search-input:focus{outline:none;border-color:var(--primary)}

.btn,.btn-sm{padding:6px 12px;border:1px solid var(--border);border-radius:8px;background:transparent;color:var(--text-secondary);font-family:var(--font);font-size:0.78rem;font-weight:500;cursor:pointer;transition:all var(--transition);white-space:nowrap}
.btn:hover,.btn-sm:hover{border-color:var(--primary);color:var(--primary)}
.btn.primary{background:rgba(155,89,182,0.12);border-color:var(--primary);color:var(--primary-light)}
.btn.primary:hover{background:rgba(155,89,182,0.2)}
.btn-sm{padding:4px 8px;font-size:0.7rem}

.app-layout{display:flex;height:calc(100vh - 48px)}

/* Editor Panel */
.editor-panel{width:360px;display:flex;flex-direction:column;border-right:1px solid var(--border);padding:12px;flex-shrink:0}
.editor-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.editor-header h2{font-size:0.82rem;font-weight:600;color:var(--primary-light)}
.editor{flex:1;padding:12px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-input);color:var(--primary-light);font-family:var(--mono);font-size:0.78rem;line-height:1.6;resize:none;tab-size:2}
.editor:focus{outline:none;border-color:var(--primary)}
.editor-panel .btn{margin-top:8px;width:100%}

/* Graph Panel */
.graph-panel{flex:1;display:flex;flex-direction:column;overflow:hidden}
.graph-toolbar{display:flex;align-items:center;justify-content:space-between;padding:8px 14px;border-bottom:1px solid var(--border);gap:12px;flex-wrap:wrap}
.graph-stats{font-size:0.72rem;color:var(--text-muted)}
.filter-group{display:flex;gap:8px}
.filter-label{font-size:0.72rem;color:var(--text-secondary);display:flex;align-items:center;gap:3px;cursor:pointer}
.filter-label input{accent-color:var(--primary)}
.graph-container{flex:1;overflow:auto;position:relative}
.graph-placeholder{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:var(--text-muted);font-size:0.85rem;text-align:center}

/* Nodes */
.node{position:absolute;background:var(--bg-card);border:1px solid var(--border-strong);border-radius:var(--radius);min-width:200px;box-shadow:var(--shadow);transition:border-color .2s}
.node:hover{border-color:var(--primary)}
.node.hidden{display:none}
.node-header{display:flex;align-items:center;gap:6px;padding:8px 10px;border-bottom:1px solid var(--border);border-radius:var(--radius) var(--radius) 0 0}
.node-type-badge{width:8px;height:8px;border-radius:50%;flex-shrink:0}
.node-name{font-size:0.8rem;font-weight:600;color:var(--text)}
.node-type{font-size:0.62rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-left:auto}
.node-fields{padding:6px 10px;max-height:200px;overflow-y:auto}
.node-field{display:flex;align-items:center;gap:6px;padding:3px 0;font-size:0.72rem}
.field-type{color:var(--scalar-color);font-family:var(--mono);font-size:0.68rem}
.field-type.ref{color:var(--msg-color)}
.field-type.enumref{color:var(--enum-color)}
.field-name{color:var(--text-secondary)}
.field-num{color:var(--text-muted);font-size:0.62rem;margin-left:auto}
.field-modifier{font-size:0.6rem;color:var(--accent);font-weight:600}

/* SVG edges */
.edge-svg{position:absolute;top:0;left:0;pointer-events:none;z-index:0}
.edge-line{stroke:var(--primary);stroke-width:1.5;stroke-opacity:0.3;fill:none}

@media(max-width:768px){
  .app-layout{flex-direction:column}
  .editor-panel{width:100%;height:35vh;border-right:none;border-bottom:1px solid var(--border)}
}