fusible 0.8.20

Electronic linter: a fuse that blows to block firmware code generation
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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Fusible Studio</title>
  <link rel="icon" type="image/svg+xml" href="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' width='24' height='24'%3E%3Cpath fill='%2386A881' d='M5 3h14v2H5zm0 16h14v2H5zM3 5h2v14H3zm16 0h2v14h-2zM7 7h10v2H7zm0 8h10v2H7zm0-6h2v6H7zm8 0h2v6h-2zm-4-8h2v2h-2zm0 20h2v2h-2zM1 11h2v2H1zm20 0h2v2h-2zm0-4h2v2h-2zm0 8h2v2h-2zM1 15h2v2H1zm0-8h2v2H1zm6-6h2v2H7zm8 0h2v2h-2zm0 20h2v2h-2zm-8 0h2v2H7z'/%3E%3C/svg%3E">
  <script type="module" src="/studio.bundle.js"></script>
  <style>
    .tscircuit-schematic {
      background-color: #0d1117 !important;
    }
    .tscircuit-schematic .boundary {
      fill: #0d1117 !important;
    }
    .tscircuit-schematic text {
      fill: #f1f5f9 !important;
      font-family: 'Undefined', monospace !important;
    }
    .tscircuit-schematic .component-name,
    .tscircuit-schematic .port-label,
    .tscircuit-schematic .reference {
      fill: #86A881 !important;
      font-weight: bold !important;
    }
    .tscircuit-schematic .net-label,
    .tscircuit-schematic .sch-net-label {
      fill: #1F1F1F !important;
      stroke: #f59e0b !important;
    }
    .tscircuit-schematic .sch-net-label-text,
    .tscircuit-schematic text.net-label {
      fill: #f59e0b !important;
    }
    #pcb-container,
    #pcb-container > div,
    #pcb-container canvas,
    #schematic-container,
    #schematic-container > div {
      width: 100% !important;
      height: 100% !important;
      display: block;
    }
    @font-face {
      font-family: 'Undefined';
      src: url('/undefined-medium.otf') format('opentype');
      font-weight: normal;
      font-style: normal;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    :root {
      --bg: #000000;
      --surface: #1F1F1F;
      --surface-hover: #2B2B2B;
      --border: #353535;
      --border-subtle: #222222;
      --green: #86A881;
      --green-dark: #229147;
      --olive: #A8B365;
      --text: #FFFFFF;
      --text-body: #FFFFFF;
      --text-subtle: rgba(255, 255, 255, 0.55);
      --alert: #C55454;
      --copper: #c87d32;
      --gold: #d4af37;
      --blue: #38bdf8;
    }
    body {
      font-family: 'Undefined', monospace;
      background: var(--bg);
      color: var(--text);
      display: flex;
      flex-direction: column;
      height: 100vh;
      overflow: hidden;
      user-select: none;
    }
    #sidebar, #sidebar *, .sidebar-pane, .sidebar-pane *, .check-item, .check-item *, code, pre {
      user-select: text !important;
      -webkit-user-select: text !important;
    }
    header {
      height: 56px;
      background: var(--surface);
      border-bottom: none;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 24px;
      z-index: 20;
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .brand-title {
      font-size: 14px;
      letter-spacing: 0.05em;
      color: var(--text);
      font-weight: bold;
    }
    .brand-sub {
      color: var(--olive);
      font-size: 13px;
    }
    .board-name {
      color: var(--text-subtle);
      font-size: 11px;
      padding: 3px 8px;
      background: var(--surface-hover);
      border: none;
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }
    .fuse-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 3px 10px;
      font-size: 11px;
      letter-spacing: 0.05em;
      border: none;
    }
    .fuse-intact {
      background: rgba(34, 145, 71, 0.15);
      color: var(--green);
    }
    .fuse-blown {
      background: rgba(244, 63, 94, 0.15);
      color: var(--alert);
      animation: fusePulse 1.5s infinite;
    }
    @keyframes fusePulse {
      0%, 100% { opacity: 1; }
      50% { opacity: 0.6; }
    }
    .tabs {
      display: flex;
      background: var(--bg);
      border: none;
      gap: 4px;
    }
    .tab-btn {
      background: transparent;
      border: none;
      color: var(--text-subtle);
      padding: 8px 16px;
      font-family: 'Undefined', monospace;
      font-size: 11px;
      letter-spacing: 0.05em;
      cursor: pointer;
      transition: color 0.15s ease, background 0.15s ease;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .tab-btn:hover {
      color: var(--text);
      background: var(--surface-hover);
    }
    .tab-btn.active {
      background: var(--surface-hover);
      color: var(--green);
      border-bottom: 2px solid var(--green);
    }
    .controls {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .btn {
      background: var(--surface);
      border: none;
      color: var(--text-body);
      font-family: 'Undefined', monospace;
      padding: 7px 14px;
      font-size: 11px;
      letter-spacing: 0.05em;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .btn:hover {
      background: var(--surface-hover);
      color: var(--text);
    }
    main {
      flex: 1;
      display: flex;
      position: relative;
      overflow: hidden;
    }
    #viewport-container {
      flex: 1;
      position: relative;
      background: var(--bg);
      overflow: hidden;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: grab;
    }
    #viewport-container:active {
      cursor: grabbing;
    }
    #viewport-grid {
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(to right, rgba(53, 53, 53, 0.25) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(53, 53, 53, 0.25) 1px, transparent 1px);
      background-size: 32px 32px;
      pointer-events: none;
    }
    #canvas-content {
      transform-origin: 0 0;
      display: inline-block;
      transition: transform 0.05s linear;
      will-change: transform;
      z-index: 2;
    }
    #canvas-content svg {
      display: block;
      filter: drop-shadow(0 10px 25px rgba(0,0,0,0.8));
    }
    #three-container {
      position: absolute;
      inset: 0;
      z-index: 3;
      display: none;
      cursor: default;
    }
    #sidebar {
      width: 340px;
      background: var(--surface);
      border-left: none;
      display: flex;
      flex-direction: column;
      z-index: 10;
    }
    .sidebar-tabs {
      display: flex;
      border-bottom: none;
      background: var(--bg);
    }
    .sidebar-tab-btn {
      flex: 1;
      padding: 10px 4px;
      background: transparent;
      border: none;
      color: var(--text-subtle);
      font-family: 'Undefined', monospace;
      font-size: 10px;
      letter-spacing: 0.05em;
      cursor: pointer;
      border-right: none;
      transition: color 0.15s, background 0.15s;
    }
    .sidebar-tab-btn:last-child {
      border-right: none;
    }
    .sidebar-tab-btn:hover {
      color: var(--text);
      background: var(--surface-hover);
    }
    .sidebar-tab-btn.active {
      color: var(--green);
      background: var(--surface);
      border-bottom: 2px solid var(--green);
    }
    .sidebar-pane {
      display: none;
      flex: 1;
      overflow-y: auto;
      flex-direction: column;
    }
    .sidebar-pane.active {
      display: flex;
    }
    .sidebar-section {
      padding: 12px 16px;
      border-bottom: none;
    }
    .section-title {
      font-size: 11px;
      letter-spacing: 0.1em;
      color: var(--olive);
      margin-bottom: 8px;
    }
    .layer-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 5px 0;
      font-size: 11px;
      letter-spacing: 0.05em;
      color: var(--text-body);
    }
    .layer-label {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .layer-color-dot {
      width: 8px;
      height: 8px;
      border: none;
    }
    .toggle-checkbox {
      accent-color: var(--green);
      cursor: pointer;
    }
    .inspector-card {
      padding: 14px 16px;
    }
    .inspector-header {
      display: flex;
      justify-content: space-between;
      align-items: baseline;
      margin-bottom: 12px;
      padding-bottom: 8px;
      border-bottom: none;
    }
    .inspector-name {
      font-size: 14px;
      font-weight: bold;
      color: var(--green);
      letter-spacing: 0.05em;
    }
    .inspector-type {
      font-size: 10px;
      color: var(--olive);
      text-transform: uppercase;
    }
    .prop-row {
      display: flex;
      justify-content: space-between;
      padding: 4px 0;
      font-size: 11px;
      border-bottom: none;
    }
    .prop-key {
      color: var(--text-subtle);
    }
    .prop-val {
      color: var(--text-body);
      font-family: monospace;
    }
    .pins-list {
      margin-top: 12px;
    }
    .pins-title {
      font-size: 10px;
      color: var(--olive);
      letter-spacing: 0.05em;
      margin-bottom: 6px;
    }
    .pin-item {
      display: flex;
      justify-content: space-between;
      padding: 3px 6px;
      font-size: 10px;
      background: var(--surface-hover);
      border: none;
      margin-bottom: 3px;
      cursor: pointer;
    }
    .pin-item:hover {
      color: var(--blue);
    }
    .pin-net {
      color: var(--blue);
    }
    .comp-item {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 8px 16px;
      border-bottom: none;
      font-size: 11px;
      cursor: pointer;
      transition: background 0.1s;
    }
    .comp-item:hover {
      background: var(--surface-hover);
      color: var(--green);
    }
    .comp-item.selected {
      background: rgba(134, 168, 129, 0.12);
      border-left: none;
    }
    .comp-sub {
      color: var(--text-subtle);
      font-size: 10px;
    }
    .net-item {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 8px 16px;
      border-bottom: none;
      font-size: 11px;
      cursor: pointer;
      color: var(--text-body);
    }
    .net-item:hover {
      background: var(--surface-hover);
      color: var(--blue);
    }
    .net-item.selected {
      background: rgba(56, 189, 248, 0.12);
      border-left: none;
    }
    .diag-card {
      background: rgba(244, 63, 94, 0.06);
      border: none;
      padding: 10px;
      margin: 12px 16px;
      font-size: 11px;
    }
    .diag-title {
      color: var(--alert);
      margin-bottom: 4px;
      display: flex;
      align-items: center;
      gap: 6px;
      font-weight: bold;
    }
    .diag-body {
      color: var(--text-body);
      line-height: 1.4;
      white-space: pre-wrap;
    }
    .diag-help {
      color: var(--olive);
      margin-top: 4px;
      line-height: 1.3;
    }
    .empty-state {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 24px 8px;
      color: var(--text-subtle);
      font-size: 11px;
      letter-spacing: 0.05em;
      text-align: center;
    }
    .hud-toast {
      position: absolute;
      bottom: 16px;
      left: 16px;
      background: rgba(31, 31, 31, 0.95);
      border: none;
      padding: 6px 12px;
      font-size: 11px;
      color: var(--text-subtle);
      display: flex;
      align-items: center;
      gap: 8px;
      pointer-events: none;
      z-index: 10;
    }
    .status-dot {
      width: 6px;
      height: 6px;
      background: var(--green);
    }
    .hover-tooltip {
      position: fixed;
      z-index: 1000;
      pointer-events: none;
      background: rgba(31, 31, 31, 0.95);
      border: none;
      padding: 8px 12px;
      font-size: 11px;
      line-height: 1.4;
      color: var(--text);
      max-width: 280px;
      box-shadow: 0 4px 16px rgba(0,0,0,0.7);
      backdrop-filter: blur(4px);
      display: none;
    }
    .tooltip-title {
      font-weight: bold;
      color: var(--green);
      margin-bottom: 2px;
      letter-spacing: 0.05em;
    }
    .tooltip-meta {
      color: var(--olive);
      font-size: 10px;
      margin-bottom: 4px;
    }
    .tooltip-row {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      color: var(--text-subtle);
      font-size: 10px;
      margin-top: 2px;
    }
    .tooltip-val {
      color: var(--text-body);
      font-family: monospace;
    }
    iconify-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      vertical-align: middle;
      font-size: 13px;
    }
    .brand-logo {
      font-size: 20px;
      color: var(--green);
      display: inline-flex;
      align-items: center;
    }
    [role="menu"],
    [role="menuitem"],
    div[role="menu"],
    div[aria-label*="context menu"],
    div[aria-label*="Visibility"],
    .sv-sheet-item,
    [data-radix-popper-content-wrapper] > div {
      background: rgba(31, 31, 31, 0.96) !important;
      color: var(--text) !important;
      border: none !important;
      border-radius: 2px !important;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.8) !important;
      font-family: 'Undefined', monospace !important;
      font-size: 11px !important;
      backdrop-filter: blur(8px) !important;
    }
    [role="menuitem"],
    button[role="menuitem"],
    div[role="menu"] button {
      background: transparent !important;
      color: var(--text-body) !important;
      font-family: 'Undefined', monospace !important;
      font-size: 11px !important;
      padding: 6px 10px !important;
      border: none !important;
      border-radius: 0 !important;
      transition: background 0.1s, color 0.1s !important;
    }
    [role="menuitem"]:hover,
    [role="menuitem"]:focus,
    [role="menuitem"]:focus-visible,
    button[role="menuitem"]:hover,
    div[role="menu"] button:hover,
    .sv-sheet-item:hover,
    .sv-sheet-item[data-highlighted] {
      background: var(--surface-hover) !important;
      color: var(--green) !important;
    }
    #schematic-container div[style*="pointer-events: none"],
    #schematic-container div[style*="pointerEvents: none"] {
      background: transparent !important;
      background-color: transparent !important;
      box-shadow: none !important;
    }
    #schematic-container div[style*="rgba(255, 255, 255"],
    #schematic-container div[style*="background-color: rgba(255, 255, 255"],
    #schematic-container div[style*="backgroundColor: rgba(255, 255, 255"] {
      background-color: rgba(31, 31, 31, 0.96) !important;
      color: var(--text) !important;
      border: none !important;
      border-radius: 2px !important;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.8) !important;
      font-family: 'Undefined', monospace !important;
      backdrop-filter: blur(8px) !important;
    }
    #schematic-container dl,
    #schematic-container dl * {
      font-family: 'Undefined', monospace !important;
      color: var(--text-body) !important;
    }
    #schematic-container dt {
      color: var(--text-subtle) !important;
      font-size: 10px !important;
    }
    #schematic-container dd {
      color: var(--green) !important;
      font-size: 11px !important;
      font-weight: bold !important;
    }
    #schematic-container button,
    #schematic-container input,
    .schematic-viewer-toolbar button {
      font-family: 'Undefined', monospace !important;
      border-radius: 2px !important;
      background: var(--surface) !important;
      border: 1px solid var(--border) !important;
      color: var(--text) !important;
      box-shadow: none !important;
      outline: none !important;
    }
    #schematic-container button:hover,
    .schematic-viewer-toolbar button:hover {
      background: var(--surface-hover) !important;
      color: var(--green) !important;
      border-color: var(--green) !important;
    }
    [data-schematic-search] {
      font-family: 'Undefined', monospace !important;
    }
    [data-schematic-search] > div {
      background: var(--surface) !important;
      border: 1px solid var(--border) !important;
      border-radius: 2px !important;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.8) !important;
      color: var(--text) !important;
    }
    [data-schematic-search] input {
      background: var(--bg) !important;
      color: var(--text) !important;
      border: 1px solid var(--border) !important;
      border-radius: 2px !important;
      font-family: 'Undefined', monospace !important;
    }
    [data-schematic-search] button,
    [data-schematic-search] [role="button"] {
      border: none !important;
      border-radius: 2px !important;
      background: transparent !important;
      color: var(--text) !important;
    }
    [data-schematic-search] button:hover,
    [data-schematic-search] [role="button"]:hover {
      background: var(--surface-hover) !important;
      color: var(--green) !important;
    }
    [data-schematic-search] span {
      font-family: 'Undefined', monospace !important;
    }
    [data-schematic-warnings] {
      font-family: 'Undefined', monospace !important;
      background: var(--surface) !important;
      color: var(--alert) !important;
      border: 1px solid var(--border) !important;
      border-radius: 2px !important;
      box-shadow: none !important;
    }
    [data-schematic-warnings]:hover {
      background: var(--surface-hover) !important;
      border-color: var(--alert) !important;
      color: var(--alert) !important;
    }
    [data-schematic-warnings][aria-pressed="true"] {
      background: rgba(197, 84, 84, 0.2) !important;
      border-color: var(--alert) !important;
    }
    .schematic-warning,
    .schematic-warning * {
      font-family: 'Undefined', monospace !important;
    }
    .schematic-warning [data-warning-reference="callout"] {
      background: var(--surface) !important;
      color: var(--text) !important;
      border: 1px solid var(--alert) !important;
      border-radius: 2px !important;
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.8) !important;
    }
    /* Fusible theme for PCB Viewer Toolbar (Top-Left Options) */
    #pcb-container [data-toolbar-overlay],
    [data-toolbar-overlay] {
      font-family: 'Undefined', monospace !important;
      gap: 6px !important;
    }
    #pcb-container [data-toolbar-overlay] > div,
    [data-toolbar-overlay] > div,
    [data-toolbar-overlay] button,
    #pcb-container button,
    #pcb-container select,
    #pcb-container input,
    #pcb-container [data-toolbar-overlay] div[style*="cursor: pointer"] {
      font-family: 'Undefined', monospace !important;
      font-size: 11px !important;
      letter-spacing: 0.05em !important;
      background: var(--surface) !important;
      background-color: var(--surface) !important;
      border: 1px solid var(--border) !important;
      border-radius: 2px !important;
      color: var(--text) !important;
      box-shadow: none !important;
      outline: none !important;
      transition: background 0.12s ease, color 0.12s ease, border-color 0.12s ease !important;
    }
    #pcb-container [data-toolbar-overlay] > div:hover,
    [data-toolbar-overlay] > div:hover,
    [data-toolbar-overlay] button:hover,
    #pcb-container button:hover,
    #pcb-container [data-toolbar-overlay] div[style*="cursor: pointer"]:hover {
      background: var(--surface-hover) !important;
      background-color: var(--surface-hover) !important;
      color: var(--green) !important;
      border-color: var(--green) !important;
    }
    [data-toolbar-overlay] div[style*="minWidth: 120"],
    [data-toolbar-overlay] div[style*="min-width: 120"],
    [data-toolbar-overlay] div[style*="position: absolute"] {
      background: rgba(31, 31, 31, 0.96) !important;
      background-color: rgba(31, 31, 31, 0.96) !important;
      border: 1px solid var(--border) !important;
      border-radius: 2px !important;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.8) !important;
      backdrop-filter: blur(8px) !important;
    }
    [data-toolbar-overlay] div[style*="minWidth: 120"] > div,
    [data-toolbar-overlay] div[style*="min-width: 120"] > div {
      font-family: 'Undefined', monospace !important;
      font-size: 11px !important;
      padding: 6px 10px !important;
      color: var(--text) !important;
      border: none !important;
    }
    [data-toolbar-overlay] div[style*="minWidth: 120"] > div:hover,
    [data-toolbar-overlay] div[style*="min-width: 120"] > div:hover {
      background: var(--surface-hover) !important;
      color: var(--green) !important;
    }

    #three-cad div[style*="background-color: white"],
    #three-cad div[style*="background-color: rgb(255, 255, 255)"],
    #three-cad div[style*="background: white"],
    #three-cad div[style*="background:white"] {
      background-color: rgba(31, 31, 31, 0.95) !important;
      color: var(--text) !important;
      border: none !important;
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.7) !important;
      font-family: 'Undefined', monospace !important;
      font-size: 11px !important;
      padding: 6px 10px !important;
      border-radius: 2px !important;
      backdrop-filter: blur(4px) !important;
    }
    #three-cad div[style*="background-color: white"] *,
    #three-cad div[style*="background-color: rgb(255, 255, 255)"] * {
      color: var(--text) !important;
    }
  </style>
</head>
<body>
  <header>
    <div class="brand">
      <iconify-icon icon="pixelarticons:cpu-sharp" class="brand-logo"></iconify-icon>
      <span class="board-name" id="board-name">BOARD PREVIEW</span>
      <div id="fuse-status" class="fuse-badge fuse-intact">
        <span id="fuse-icon"><iconify-icon icon="pixelarticons:zap"></iconify-icon></span>
        <span id="fuse-text">[OK] FUSE INTACT</span>
      </div>
    </div>

    <div class="tabs">
      <button class="tab-btn active" data-view="schematic" onclick="switchView('schematic')"><iconify-icon icon="pixelarticons:git-commit"></iconify-icon><span>SCHEMATIC</span></button>
      <button class="tab-btn" data-view="pcb" onclick="switchView('pcb')"><iconify-icon icon="pixelarticons:grid"></iconify-icon><span>PCB LAYOUT</span></button>
      <button class="tab-btn" data-view="3d" onclick="switchView('3d')"><iconify-icon icon="pixelarticons:cube"></iconify-icon><span>3D VIEW</span></button>
    </div>

    <div class="controls" id="controls-2d">
      <button class="btn" id="btn-pcb-mode" style="display: none;" onclick="togglePcbMode()"><iconify-icon icon="pixelarticons:switch"></iconify-icon> <span id="pcb-mode-label">VIEW: INSPECTOR</span></button>
      <button class="btn" onclick="zoomIn()"><iconify-icon icon="pixelarticons:zoom-in"></iconify-icon> ZOOM +</button>
      <button class="btn" onclick="zoomOut()"><iconify-icon icon="pixelarticons:zoom-out"></iconify-icon> ZOOM -</button>
      <button class="btn" onclick="resetZoom()"><iconify-icon icon="pixelarticons:undo"></iconify-icon> RESET</button>
    </div>

    <div class="controls" id="controls-3d" style="display: none;">
      <button class="btn" onclick="setCameraPreset('TOP')"><iconify-icon icon="pixelarticons:arrow-up"></iconify-icon> TOP</button>
      <button class="btn" onclick="setCameraPreset('ISO')"><iconify-icon icon="pixelarticons:corner-up-right"></iconify-icon> ISO</button>
      <button class="btn" onclick="setCameraPreset('FRONT')"><iconify-icon icon="pixelarticons:arrow-down"></iconify-icon> FRONT</button>
      <button class="btn" onclick="setCameraPreset('RESET')"><iconify-icon icon="pixelarticons:reload"></iconify-icon> RESET</button>
      <button class="btn" id="btn-engine-toggle" onclick="toggle3dEngine()"><iconify-icon icon="pixelarticons:switch"></iconify-icon> <span id="engine-label">ENGINE: CAD</span></button>
    </div>
  </header>

  <main>
    <div id="viewport-container">
      <div id="viewport-grid"></div>
      <div id="pcb-container" style="position:absolute;inset:0;width:100%;height:100%;z-index:2;display:none;"></div>
      <div id="schematic-container" style="position:absolute;inset:0;width:100%;height:100%;z-index:2;display:none;"></div>
      <div id="canvas-content" style="display:none;"></div>
      <div id="three-container">
        <div id="three-native" style="width:100%;height:100%;position:absolute;inset:0;"></div>
        <div id="three-cad" style="width:100%;height:100%;position:absolute;inset:0;display:none;"></div>
      </div>
      <div class="hud-toast">
        <div class="status-dot" id="live-dot"></div>
        <span id="live-status">SSE CONNECTED</span>
      </div>
      <div id="hover-tooltip" class="hover-tooltip"></div>
    </div>

    <aside id="sidebar">
      <div class="sidebar-tabs">
        <button class="sidebar-tab-btn active" onclick="switchSidebarTab('inspector')">INSPECT</button>
        <button class="sidebar-tab-btn" onclick="switchSidebarTab('components')">PARTS</button>
        <button class="sidebar-tab-btn" onclick="switchSidebarTab('nets')">NETS</button>
        <button class="sidebar-tab-btn" onclick="switchSidebarTab('layers')">LAYERS</button>
        <button class="sidebar-tab-btn" onclick="switchSidebarTab('checks')">CHECKS</button>
      </div>

      <div class="sidebar-pane active" id="pane-inspector">
        <div id="inspector-content" class="inspector-card">
          <div class="empty-state">
            <span>SELECT OR HOVER A COMPONENT OR PAD TO INSPECT</span>
          </div>
        </div>
      </div>

      <div class="sidebar-pane" id="pane-components">
        <div id="components-list">
          <div class="empty-state"><span>NO COMPONENTS PARSED</span></div>
        </div>
      </div>

      <div class="sidebar-pane" id="pane-nets">
        <div id="nets-list">
          <div class="empty-state"><span>NO NETS DETECTED</span></div>
        </div>
      </div>

      <div class="sidebar-pane" id="pane-layers">
        <div class="sidebar-section">
          <div class="section-title">PCB COPPER & MASKS</div>
          <div class="layer-item">
            <div class="layer-label">
              <span class="layer-color-dot" style="background: var(--copper);"></span>
              <span>TOP COPPER</span>
            </div>
            <input type="checkbox" class="toggle-checkbox" checked onchange="toggleLayer('top_copper', this.checked)">
          </div>
          <div class="layer-item">
            <div class="layer-label">
              <span class="layer-color-dot" style="background: var(--blue);"></span>
              <span>BOTTOM COPPER</span>
            </div>
            <input type="checkbox" class="toggle-checkbox" checked onchange="toggleLayer('bottom_copper', this.checked)">
          </div>
          <div class="layer-item">
            <div class="layer-label">
              <span class="layer-color-dot" style="background: var(--gold);"></span>
              <span>PADS (ENIG GOLD)</span>
            </div>
            <input type="checkbox" class="toggle-checkbox" checked onchange="toggleLayer('pads', this.checked)">
          </div>
          <div class="layer-item">
            <div class="layer-label">
              <span class="layer-color-dot" style="background: #ffffff;"></span>
              <span>SILKSCREEN</span>
            </div>
            <input type="checkbox" class="toggle-checkbox" checked onchange="toggleLayer('silkscreen', this.checked)">
          </div>
          <div class="layer-item">
            <div class="layer-label">
              <span class="layer-color-dot" style="background: var(--border);"></span>
              <span>HOLES & VIAS</span>
            </div>
            <input type="checkbox" class="toggle-checkbox" checked onchange="toggleLayer('holes_and_vias', this.checked)">
          </div>
        </div>
      </div>

      <div class="sidebar-pane" id="pane-checks">
        <div id="diagnostics-panel">
          <div class="empty-state">
            <span>NO ELECTRICAL VIOLATIONS DETECTED.</span>
          </div>
        </div>
      </div>
    </aside>
  </main>

  <script>
    let currentView = 'schematic';
    let pcbMode = 'inspector';
    let pcbSvg = '';
    let schematicSvg = '';
    let lastCircuitJson = null;
    let tscircuitFallback = false;

    let zoomLevel = 1.0;
    let panX = 0;
    let panY = 0;
    let isDragging = false;
    let startX = 0;
    let startY = 0;

    const viewport = document.getElementById('viewport-container');
    const canvas = document.getElementById('canvas-content');
    const tooltip = document.getElementById('hover-tooltip');

    let scene = null;
    let camera = null;
    let renderer = null;
    let controls = null;
    let boardGroup = null;
    let threeInitialized = false;

    let boardWidth = 60;
    let boardHeight = 40;
    let boardCenterX = 0;
    let boardCenterZ = 0;

    let componentsMap = {};
    let netsMap = {};
    let selectedComponent = null;

    function applyTransform() {
      canvas.style.transform = `translate(${panX}px, ${panY}px) scale(${zoomLevel})`;
    }

    function isInteractive2dActive() {
      if (currentView === 'pcb') {
        return pcbMode === 'inspector' && !!window.Tscircuit;
      }
      return currentView === 'schematic' && !!window.Tscircuit;
    }

    function zoomIn() {
      if (isInteractive2dActive()) {
        const container = currentView === 'pcb' ? document.getElementById('pcb-container') : document.getElementById('schematic-container');
        if (container) {
          const rect = container.getBoundingClientRect();
          const target = container.querySelector('canvas') || container.querySelector('svg') || container;
          target.dispatchEvent(new WheelEvent('wheel', {
            deltaY: -120,
            clientX: rect.left + rect.width / 2,
            clientY: rect.top + rect.height / 2,
            bubbles: true,
          }));
          return;
        }
      }
      zoomLevel *= 1.25;
      applyTransform();
    }

    function zoomOut() {
      if (isInteractive2dActive()) {
        const container = currentView === 'pcb' ? document.getElementById('pcb-container') : document.getElementById('schematic-container');
        if (container) {
          const rect = container.getBoundingClientRect();
          const target = container.querySelector('canvas') || container.querySelector('svg') || container;
          target.dispatchEvent(new WheelEvent('wheel', {
            deltaY: 120,
            clientX: rect.left + rect.width / 2,
            clientY: rect.top + rect.height / 2,
            bubbles: true,
          }));
          return;
        }
      }
      zoomLevel /= 1.25;
      applyTransform();
    }

    function resetZoom() {
      zoomLevel = 1.0;
      panX = 0;
      panY = 0;
      applyTransform();
      if (isInteractive2dActive()) {
        renderCurrentView();
      }
    }

    viewport.addEventListener('wheel', (e) => {
      if (currentView === '3d' || isInteractive2dActive()) return;
      e.preventDefault();
      const zoomFactor = e.deltaY < 0 ? 1.15 : 0.85;
      zoomLevel *= zoomFactor;
      applyTransform();
    }, { passive: false });

    viewport.addEventListener('mousedown', (e) => {
      if (currentView === '3d' || isInteractive2dActive()) return;
      if (e.button === 0) {
        isDragging = true;
        startX = e.clientX - panX;
        startY = e.clientY - panY;
      }
    });

    window.addEventListener('mousemove', (e) => {
      if (currentView === '3d' || isInteractive2dActive()) return;
      if (isDragging) {
        panX = e.clientX - startX;
        panY = e.clientY - startY;
        applyTransform();
      }
    });

    window.addEventListener('mouseup', () => {
      isDragging = false;
    });

    let engine3d = 'cad';

    function toggle3dEngine() {
      engine3d = engine3d === 'cad' ? 'native' : 'cad';
      updateEngineUI();
    }

    function updateEngineUI() {
      const label = document.getElementById('engine-label');
      if (label) label.textContent = engine3d === 'cad' ? 'ENGINE: CAD' : 'ENGINE: NATIVE';
      const nativeEl = document.getElementById('three-native');
      const cadEl = document.getElementById('three-cad');
      if (engine3d === 'cad' && window.Tscircuit && window.Tscircuit.render3dViewer && lastCircuitJson) {
        if (cadEl) cadEl.style.display = 'block';
        if (nativeEl) nativeEl.style.display = 'none';
        try {
          window.Tscircuit.render3dViewer(cadEl, lastCircuitJson, (ref) => selectComponent(ref));
        } catch (err) {
          if (cadEl) cadEl.style.display = 'none';
          if (nativeEl) nativeEl.style.display = 'block';
          initThree();
          build3DScene();
          setTimeout(onThreeResize, 10);
        }
      } else {
        if (cadEl) cadEl.style.display = 'none';
        if (nativeEl) nativeEl.style.display = 'block';
        initThree();
        build3DScene();
        setTimeout(onThreeResize, 10);
      }
    }

    function switchView(view) {
      currentView = view;
      document.querySelectorAll('.tab-btn').forEach(btn => {
        btn.classList.toggle('active', btn.getAttribute('data-view') === view);
      });

      const is3d = view === '3d';
      const pcbEl = document.getElementById('pcb-container');
      const schEl = document.getElementById('schematic-container');
      const threeEl = document.getElementById('three-container');
      const canvasEl = document.getElementById('canvas-content');

      document.getElementById('controls-2d').style.display = is3d ? 'none' : 'flex';
      document.getElementById('controls-3d').style.display = is3d ? 'flex' : 'none';
      const btnPcbMode = document.getElementById('btn-pcb-mode');
      if (btnPcbMode) btnPcbMode.style.display = view === 'pcb' ? 'inline-flex' : 'none';

      hideTooltip();

      if (is3d) {
        if (pcbEl) pcbEl.style.display = 'none';
        if (schEl) schEl.style.display = 'none';
        if (canvasEl) canvasEl.style.display = 'none';
        if (threeEl) threeEl.style.display = 'block';

        initThree();
        build3DScene();
        updateEngineUI();
        setTimeout(onThreeResize, 10);
        setCameraPreset('ISO');
      } else {
        if (threeEl) threeEl.style.display = 'none';
        renderCurrentView();
        if (view === 'schematic') {
          window.dispatchEvent(new Event('resize'));
          setTimeout(() => window.dispatchEvent(new Event('resize')), 10);
        }
      }
    }

    function switchSidebarTab(tabId) {
      document.querySelectorAll('.sidebar-tab-btn').forEach(btn => {
        btn.classList.toggle('active', btn.getAttribute('onclick').includes(tabId));
      });
      document.querySelectorAll('.sidebar-pane').forEach(p => p.classList.remove('active'));
      const activePane = document.getElementById(`pane-${tabId}`);
      if (activePane) activePane.classList.add('active');
    }

    function togglePcbMode() {
      pcbMode = pcbMode === 'inspector' ? '3d' : 'inspector';
      const label = document.getElementById('pcb-mode-label');
      if (label) {
        label.textContent = pcbMode === 'inspector' ? 'VIEW: INSPECTOR' : 'VIEW: 3D';
      }
      renderCurrentView();
    }

    function renderCurrentView() {
      const pcbEl = document.getElementById('pcb-container');
      const schEl = document.getElementById('schematic-container');
      const canvasEl = document.getElementById('canvas-content');

      if (currentView === 'pcb') {
        if (schEl) schEl.style.display = 'none';
        if (pcbMode === '3d') {
          if (pcbEl) pcbEl.style.display = 'none';
          if (canvasEl) {
            canvasEl.style.display = 'inline-block';
            canvasEl.innerHTML = pcbSvg || '<div class="empty-state">NO PCB LAYOUT AVAILABLE</div>';
            setup2DInteractivity();
          }
        } else {
          if (window.Tscircuit && window.Tscircuit.renderPcbViewer && lastCircuitJson) {
            if (canvasEl) canvasEl.style.display = 'none';
            if (pcbEl) {
              pcbEl.style.display = 'block';
              window.Tscircuit.renderPcbViewer(pcbEl, lastCircuitJson, (ref) => selectComponent(ref));
            }
          } else if (tscircuitFallback) {
            if (pcbEl) pcbEl.style.display = 'none';
            if (canvasEl) {
              canvasEl.style.display = 'inline-block';
              canvasEl.innerHTML = pcbSvg || '<div class="empty-state">NO PCB LAYOUT AVAILABLE</div>';
              setup2DInteractivity();
            }
          } else {
            if (pcbEl) pcbEl.style.display = 'none';
            if (canvasEl) canvasEl.style.display = 'none';
          }
        }
      } else if (currentView === 'schematic') {
        if (pcbEl) pcbEl.style.display = 'none';
        if (window.Tscircuit && window.Tscircuit.renderSchematicViewer && lastCircuitJson) {
          if (canvasEl) canvasEl.style.display = 'none';
          if (schEl) {
            schEl.style.display = 'block';
            window.Tscircuit.renderSchematicViewer(schEl, lastCircuitJson, (ref) => selectComponent(ref));
          }
        } else if (tscircuitFallback) {
          if (schEl) schEl.style.display = 'none';
          if (canvasEl) {
            canvasEl.style.display = 'inline-block';
            canvasEl.innerHTML = schematicSvg || '<div class="empty-state">NO SCHEMATIC AVAILABLE</div>';
            setup2DInteractivity();
          }
        } else {
          if (schEl) schEl.style.display = 'none';
          if (canvasEl) canvasEl.style.display = 'none';
        }
      }
    }

    function toggleLayer(layerName, visible) {
      let selector = `g[id="${layerName}"]`;
      if (layerName === 'top_copper') {
        selector += `, .pcb-trace[data-pcb-layer*="top"], [data-pcb-layer*="top"] .pcb-trace, [data-type*="trace"][data-pcb-layer*="top"], [data-pcb-layer*="top"] [data-type*="trace"], [data-type*="copper_pour"][data-pcb-layer*="top"], [data-pcb-layer*="top"] [data-type*="copper_pour"], g.pcb-trace[data-pcb-layer*="top"]`;
      } else if (layerName === 'bottom_copper') {
        selector += `, .pcb-trace[data-pcb-layer*="bottom"], [data-pcb-layer*="bottom"] .pcb-trace, [data-type*="trace"][data-pcb-layer*="bottom"], [data-pcb-layer*="bottom"] [data-type*="trace"], [data-type*="copper_pour"][data-pcb-layer*="bottom"], [data-pcb-layer*="bottom"] [data-type*="copper_pour"], g.pcb-trace[data-pcb-layer*="bottom"]`;
      } else if (layerName === 'pads') {
        selector += `, .pcb-pad, .pcb-smtpad, [class*="pcb-pad"], [data-type*="pad"]`;
      } else if (layerName === 'silkscreen') {
        selector += `, [class*="pcb-silkscreen"], [data-type*="silkscreen"], [data-pcb-layer*="silk"], [data-pcb-layer*="silkscreen"]`;
      } else if (layerName === 'holes_and_vias') {
        selector += `, .pcb-via, .pcb-hole, [class*="pcb-hole"], [class*="pcb-via"], [data-type*="hole"], [data-type*="via"], [data-pcb-layer="drill"], [data-pcb-layer="through"]`;
      }
      const elements = canvas.querySelectorAll(selector);
      elements.forEach(el => {
        el.style.display = visible ? '' : 'none';
      });
    }

    function showTooltip(x, y, data) {
      if (!data) return;
      let html = `<div class="tooltip-title">${escapeHtml(data.name || data.ref || 'ELEMENT')}</div>`;
      if (data.type) html += `<div class="tooltip-meta">${escapeHtml(data.type.toUpperCase())}</div>`;
      if (data.part || data.mpn) html += `<div class="tooltip-row"><span>MPN/PART:</span><span class="tooltip-val">${escapeHtml(data.part || data.mpn)}</span></div>`;
      if (data.net) html += `<div class="tooltip-row"><span>NET:</span><span class="tooltip-val" style="color:var(--blue)">${escapeHtml(data.net)}</span></div>`;
      if (data.pos) html += `<div class="tooltip-row"><span>POS:</span><span class="tooltip-val">${data.pos}</span></div>`;
      if (data.layer) html += `<div class="tooltip-row"><span>LAYER:</span><span class="tooltip-val">${escapeHtml(data.layer)}</span></div>`;
      if (data.pins !== undefined && data.pins !== null) html += `<div class="tooltip-row"><span>PINS:</span><span class="tooltip-val">${data.pins}</span></div>`;
      if (data.extra) html += `<div class="tooltip-row"><span>INFO:</span><span class="tooltip-val">${escapeHtml(String(data.extra))}</span></div>`;

      tooltip.innerHTML = html;
      tooltip.style.left = `${x + 14}px`;
      tooltip.style.top = `${y + 14}px`;
      tooltip.style.display = 'block';
    }

    function hideTooltip() {
      tooltip.style.display = 'none';
    }

    function setup2DInteractivity() {
      const svg = canvas.querySelector('svg');
      if (!svg) return;

      svg.addEventListener('mousemove', (e) => {
        if (isDragging) {
          hideTooltip();
          return;
        }

        const rect = svg.getBoundingClientRect();
        const pt = svg.createSVGPoint();
        pt.x = e.clientX;
        pt.y = e.clientY;
        const svgP = pt.matrixTransform(svg.getScreenCTM().inverse());
        const circX = svgP.x;
        const circY = -svgP.y;

        const comp = findClosestComponent(circX, circY);
        if (comp) {
          showTooltip(e.clientX, e.clientY, {
            name: comp.name,
            type: comp.ftype || 'component',
            part: comp.mpn,
            pos: `(${comp.x.toFixed(2)}, ${comp.y.toFixed(2)}) mm`,
            layer: comp.layer || 'top',
            extra: `${comp.pins.length} pins`
          });
          return;
        }

        const pad = findClosestPad(circX, circY);
        if (pad) {
          showTooltip(e.clientX, e.clientY, {
            name: `PAD ${pad.id}`,
            type: 'smtpad',
            net: pad.net,
            pos: `(${pad.x.toFixed(2)}, ${pad.y.toFixed(2)}) mm`,
            layer: pad.layer
          });
          return;
        }

        hideTooltip();
      });

      svg.addEventListener('mouseleave', hideTooltip);

      svg.addEventListener('click', (e) => {
        const pt = svg.createSVGPoint();
        pt.x = e.clientX;
        pt.y = e.clientY;
        const svgP = pt.matrixTransform(svg.getScreenCTM().inverse());
        const comp = findClosestComponent(svgP.x, -svgP.y);
        if (comp) {
          selectComponent(comp.name);
        }
      });
    }

    function findClosestComponent(x, y) {
      for (const name in componentsMap) {
        const c = componentsMap[name];
        const halfW = (c.w || 4) / 2;
        const halfH = (c.h || 4) / 2;
        if (x >= c.x - halfW && x <= c.x + halfW && y >= c.y - halfH && y <= c.y + halfH) {
          return c;
        }
      }
      return null;
    }

    function findClosestPad(x, y) {
      const elements = getElementsArray();
      for (const e of elements) {
        if (e.type === 'pcb_smtpad') {
          const px = e.x ?? e.center?.x ?? 0;
          const py = e.y ?? e.center?.y ?? 0;
          const pw = e.width || 1.0;
          const ph = e.height || 1.0;
          if (Math.abs(x - px) <= pw / 2 && Math.abs(y - py) <= ph / 2) {
            return {
              id: e.pcb_smtpad_id || e.port_hints?.[0] || '1',
              x: px,
              y: py,
              layer: e.layer || 'top',
              net: e.net || e.subcircuit_id || 'SIGNAL'
            };
          }
        }
      }
      return null;
    }

    function getElementsArray() {
      if (!lastCircuitJson) return [];
      if (Array.isArray(lastCircuitJson)) return lastCircuitJson;
      return Array.isArray(lastCircuitJson.elements) ? lastCircuitJson.elements : [];
    }

    function parseCircuitGraph() {
      componentsMap = {};
      netsMap = {};

      const elements = getElementsArray();

      const sourceCompMap = {};
      elements.filter(e => e.type === 'source_component').forEach(sc => {
        sourceCompMap[sc.source_component_id || sc.component_id] = {
          name: sc.name || sc.component_id || 'U',
          mpn: sc.manufacturer_part_number || '',
          ftype: sc.ftype || sc.kind || ''
        };
      });

      const portNetMap = {};
      elements.filter(e => e.type === 'source_port').forEach(sp => {
        portNetMap[sp.source_port_id || sp.port_id] = {
          name: sp.name || '',
          pin: sp.pin_number || ''
        };
      });

      elements.filter(e => e.type === 'source_net').forEach(sn => {
        const netName = sn.name || sn.net_id || 'NET';
        netsMap[netName] = {
          name: netName,
          count: 0
        };
      });

      elements.filter(e => e.type === 'pcb_trace').forEach(t => {
        const netName = t.connection_name;
        if (netName) {
          if (!netsMap[netName]) netsMap[netName] = { name: netName, count: 0 };
          netsMap[netName].count++;
        }
      });

      elements.filter(e => e.type === 'pcb_component').forEach(pc => {
        const src = sourceCompMap[pc.source_component_id] || {};
        const name = src.name || pc.pcb_component_id || 'COMP';
        const cx = pc.center?.x ?? pc.x ?? 0;
        const cy = pc.center?.y ?? pc.y ?? 0;
        const cw = pc.width || 4;
        const ch = pc.height || 4;

        componentsMap[name] = {
          name,
          mpn: src.mpn,
          ftype: src.ftype,
          x: cx,
          y: cy,
          w: cw,
          h: ch,
          layer: pc.layer || 'top',
          id: pc.pcb_component_id,
          sourceComponentId: pc.source_component_id,
          pcbComponentId: pc.pcb_component_id,
          schematicComponentId: null,
          pins: []
        };
      });

      if (Object.keys(componentsMap).length === 0) {
        Object.entries(sourceCompMap).forEach(([id, src]) => {
          const name = src.name || id;
          componentsMap[name] = {
            name,
            mpn: src.mpn,
            ftype: src.ftype,
            x: 0,
            y: 0,
            w: 4,
            h: 4,
            layer: 'top',
            id,
            sourceComponentId: id,
            pcbComponentId: id,
            schematicComponentId: null,
            pins: []
          };
        });
      }

      elements.filter(e => e.type === 'schematic_component').forEach(sc => {
        const src = sourceCompMap[sc.source_component_id] || {};
        const name = src.name;
        if (name && componentsMap[name]) {
          componentsMap[name].schematicComponentId = sc.schematic_component_id;
          if (sc.port_labels) {
            for (const pin in sc.port_labels) {
              componentsMap[name].pins.push({
                pin,
                net: sc.port_labels[pin]
              });
            }
          }
        }
      });

      renderComponentsList();
      renderNetsList();
    }

    function renderComponentsList() {
      const container = document.getElementById('components-list');
      const names = Object.keys(componentsMap).sort();
      if (names.length === 0) {
        container.innerHTML = '<div class="empty-state"><span>NO COMPONENTS PARSED</span></div>';
        return;
      }
      container.innerHTML = names.map(name => {
        const c = componentsMap[name];
        return `
          <div class="comp-item ${selectedComponent === name ? 'selected' : ''}" onclick="selectComponent('${escapeHtml(name)}')">
            <div>
              <div style="font-weight:bold">${escapeHtml(name)}</div>
              <div class="comp-sub">${escapeHtml(c.mpn || c.ftype || '')}</div>
            </div>
            <div class="comp-sub">(${c.x.toFixed(1)}, ${c.y.toFixed(1)})</div>
          </div>
        `;
      }).join('');
    }

    function renderNetsList() {
      const container = document.getElementById('nets-list');
      const names = Object.keys(netsMap).sort();
      if (names.length === 0) {
        container.innerHTML = '<div class="empty-state"><span>NO NETS DETECTED</span></div>';
        return;
      }
      container.innerHTML = names.map(name => `
        <div class="net-item" onclick="selectNet('${escapeHtml(name)}')">
          <span style="font-weight:bold">${escapeHtml(name)}</span>
          <span style="color:var(--text-subtle);font-size:10px">${netsMap[name].count} segments</span>
        </div>
      `).join('');
    }

    let pinnedComponent = null;

    function findComponent(key) {
      if (!key) return null;
      if (componentsMap[key]) return componentsMap[key];
      const normalized = String(key).trim();
      if (componentsMap[normalized]) return componentsMap[normalized];
      for (const c of Object.values(componentsMap)) {
        if (
          c.name === normalized ||
          c.id === normalized ||
          c.pcbComponentId === normalized ||
          c.sourceComponentId === normalized ||
          c.schematicComponentId === normalized
        ) {
          return c;
        }
      }
      return null;
    }

    function resetInspector() {
      if (pinnedComponent) return;
      const panel = document.getElementById('inspector-content');
      if (panel) {
        panel.innerHTML = '<div class="empty-state"><span>SELECT OR HOVER A COMPONENT OR PAD TO INSPECT</span></div>';
      }
    }

    function inspectComponent(compOrName, isPinned = true) {
      const comp = typeof compOrName === 'string' ? findComponent(compOrName) : compOrName;
      if (!comp) {
        if (!isPinned && !pinnedComponent) resetInspector();
        return;
      }
      if (isPinned) {
        pinnedComponent = comp.name;
        selectedComponent = comp.name;
        renderComponentsList();
      }

      const panel = document.getElementById('inspector-content');
      if (!panel) return;

      let pinsHtml = '';
      if (comp.pins && comp.pins.length > 0) {
        pinsHtml = `
          <div class="pins-list">
            <div class="pins-title">CONNECTED PINS & SIGNALS</div>
            ${comp.pins.map(p => `
              <div class="pin-item" onclick="selectNet('${escapeHtml(p.net)}')">
                <span>${escapeHtml(p.pin)}</span>
                <span class="pin-net">${escapeHtml(p.net)}</span>
              </div>
            `).join('')}
          </div>
        `;
      }

      panel.innerHTML = `
        <div class="inspector-header">
          <div>
            <span class="inspector-name">${escapeHtml(comp.name)}</span>
            ${!isPinned ? '<span style="font-size:9px;color:var(--olive);margin-left:6px;vertical-align:middle;">[PREVIEW]</span>' : ''}
          </div>
          <span class="inspector-type">${escapeHtml(comp.ftype || 'COMPONENT')}</span>
        </div>
        ${comp.mpn ? `<div class="prop-row"><span class="prop-key">MPN</span><span class="prop-val">${escapeHtml(comp.mpn)}</span></div>` : ''}
        <div class="prop-row"><span class="prop-key">CENTER</span><span class="prop-val">(${comp.x.toFixed(2)}, ${comp.y.toFixed(2)}) mm</span></div>
        ${comp.w && comp.h ? `<div class="prop-row"><span class="prop-key">FOOTPRINT</span><span class="prop-val">${comp.w.toFixed(1)} x ${comp.h.toFixed(1)} mm</span></div>` : ''}
        <div class="prop-row"><span class="prop-key">LAYER</span><span class="prop-val">${escapeHtml((comp.layer || 'top').toUpperCase())}</span></div>
        ${pinsHtml}
      `;

      if (isPinned && currentView === '3d' && boardGroup) {
        boardGroup.children.forEach(obj => {
          if (obj.userData && obj.userData.name === comp.name) {
            obj.traverse(child => {
              if (child.isMesh && child.material && child.material.emissive) {
                child.material.emissive = new THREE.Color(0x86A881);
                child.material.emissiveIntensity = 0.8;
              }
            });
          } else {
            obj.traverse(child => {
              if (child.isMesh && child.material && child.material.emissive) {
                child.material.emissive.setHex(child.userData.__origEmissive !== undefined ? child.userData.__origEmissive : 0x000000);
                child.material.emissiveIntensity = child.userData.__origEmissiveIntensity !== undefined ? child.userData.__origEmissiveIntensity : 0.0;
              }
            });
          }
        });
      }
    }

    function selectComponent(idOrName) {
      const comp = findComponent(idOrName);
      if (!comp) return;
      switchSidebarTab('inspector');
      inspectComponent(comp, true);
    }

    function selectNet(netName) {
      document.querySelectorAll('.net-item').forEach(el => {
        el.classList.toggle('selected', el.textContent.includes(netName));
      });
      showTooltip(window.innerWidth / 2, 80, {
        name: `NET: ${netName}`,
        type: 'SIGNAL TRACE HIGHLIGHT',
        net: netName
      });
      setTimeout(hideTooltip, 2000);
    }

    function updateDiagnostics(fuseBlown, diagnostics) {
      const statusEl = document.getElementById('fuse-status');
      const textEl = document.getElementById('fuse-text');
      const iconEl = document.getElementById('fuse-icon');
      const diagPanel = document.getElementById('diagnostics-panel');

      if (fuseBlown) {
        statusEl.className = 'fuse-badge fuse-blown';
        textEl.textContent = `[BLOWN] FUSE BLOWN (${diagnostics.length})`;
        if (iconEl) iconEl.innerHTML = '<iconify-icon icon="pixelarticons:alert"></iconify-icon>';

        if (diagnostics.length > 0) {
          diagPanel.innerHTML = diagnostics.map(d => `
            <div class="diag-card">
              <div class="diag-title">[!] ${escapeHtml((d.rule || 'VIOLATION').toUpperCase())}</div>
              <div class="diag-body">${escapeHtml(d.message || '')}</div>
              ${d.help ? `<div class="diag-help">> ${escapeHtml(d.help)}</div>` : ''}
            </div>
          `).join('');
        }
      } else {
        statusEl.className = 'fuse-badge fuse-intact';
        textEl.textContent = '[OK] FUSE INTACT';
        if (iconEl) iconEl.innerHTML = '<iconify-icon icon="pixelarticons:zap"></iconify-icon>';
        diagPanel.innerHTML = '<div class="empty-state"><span>NO ELECTRICAL VIOLATIONS DETECTED.</span></div>';
      }
    }

    function escapeHtml(str) {
      return str.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
    }

    function onThreeResize() {
      if (!renderer || !camera) return;
      const container = document.getElementById('three-native');
      const w = container.clientWidth || window.innerWidth;
      const h = container.clientHeight || window.innerHeight;
      if (w === 0 || h === 0) return;
      camera.aspect = w / h;
      camera.updateProjectionMatrix();
      renderer.setSize(w, h);
    }

    let raycaster = null;
    let mouseVector = null;
    let hoveredObject = null;
    let originalColor = null;

    function initThree() {
      if (threeInitialized) return;
      const container = document.getElementById('three-native');
      const width = container.clientWidth || window.innerWidth;
      const height = container.clientHeight || window.innerHeight;

      scene = new THREE.Scene();
      scene.background = new THREE.Color(0x000000);

      camera = new THREE.PerspectiveCamera(45, width / height, 0.1, 2000);
      camera.position.set(0, 80, 100);

      renderer = new THREE.WebGLRenderer({ antialias: true, alpha: true });
      renderer.setSize(width, height);
      renderer.setPixelRatio(window.devicePixelRatio || 1);
      renderer.toneMapping = THREE.ACESFilmicToneMapping;
      renderer.toneMappingExposure = 1.05;
      container.appendChild(renderer.domElement);

      controls = new THREE.OrbitControls(camera, renderer.domElement);
      controls.enableDamping = true;
      controls.dampingFactor = 0.05;

      const ambientLight = new THREE.AmbientLight(0xffffff, 0.25);
      scene.add(ambientLight);

      const hemiLight = new THREE.HemisphereLight(0xffffff, 0x18181b, 0.6);
      scene.add(hemiLight);

      const dirLight1 = new THREE.DirectionalLight(0xffffff, 1.25);
      dirLight1.position.set(70, 130, 80);
      scene.add(dirLight1);

      const dirLight2 = new THREE.DirectionalLight(0x90cdf4, 0.5);
      dirLight2.position.set(-80, 50, -70);
      scene.add(dirLight2);

      const bottomLight = new THREE.DirectionalLight(0xffffff, 0.85);
      bottomLight.position.set(40, -110, 50);
      scene.add(bottomLight);

      const headlight = new THREE.DirectionalLight(0xffffff, 0.7);
      camera.add(headlight);
      scene.add(camera);

      const grid = new THREE.GridHelper(200, 40, 0x353535, 0x1F1F1F);
      grid.position.y = -1.0;
      scene.add(grid);

      boardGroup = new THREE.Group();
      scene.add(boardGroup);

      raycaster = new THREE.Raycaster();
      mouseVector = new THREE.Vector2();

      container.addEventListener('mousemove', onThreeMouseMove);
      container.addEventListener('click', onThreeClick);

      function animate() {
        requestAnimationFrame(animate);
        controls.update();
        renderer.render(scene, camera);
      }
      animate();

      window.addEventListener('resize', onThreeResize);
      threeInitialized = true;
    }

    function onThreeMouseMove(e) {
      if (currentView !== '3d' || !renderer || !camera || !boardGroup) return;
      const container = document.getElementById('three-native');
      const rect = container.getBoundingClientRect();
      mouseVector.x = ((e.clientX - rect.left) / rect.width) * 2 - 1;
      mouseVector.y = -((e.clientY - rect.top) / rect.height) * 2 + 1;

      raycaster.setFromCamera(mouseVector, camera);
      const intersects = raycaster.intersectObjects(boardGroup.children, true);
      let target = null;
      for (const hit of intersects) {
        let cur = hit.object;
        while (cur && cur !== boardGroup && cur !== scene) {
          if (cur.userData && (cur.userData.name || cur.userData.type)) {
            target = cur;
            break;
          }
          cur = cur.parent;
        }
        if (target) break;
      }

      if (target) {
        if (hoveredObject !== target) {
          clearThreeHighlight();
          hoveredObject = target;
          hoveredObject.traverse(child => {
            if (child.isMesh && child.material && child.material.emissive) {
              if (child.userData.__origEmissive === undefined) {
                child.userData.__origEmissive = child.material.emissive.getHex();
                child.userData.__origEmissiveIntensity = child.material.emissiveIntensity;
              }
              child.material.emissive.setHex(0x38bdf8);
              child.material.emissiveIntensity = 0.8;
            }
          });
        }
        showTooltip(e.clientX, e.clientY, target.userData);
        if (!pinnedComponent) {
          const comp = findComponent(target.userData.name);
          if (comp) {
            inspectComponent(comp, false);
          } else if (target.userData.type) {
            inspectComponent({
              name: target.userData.name || target.userData.type.toUpperCase(),
              mpn: target.userData.part || '',
              ftype: target.userData.type.toUpperCase(),
              x: parseFloat(target.userData.pos?.match(/[\d.-]+/g)?.[0] || 0),
              y: parseFloat(target.userData.pos?.match(/[\d.-]+/g)?.[1] || 0),
              w: 0,
              h: 0,
              layer: target.userData.layer || 'top',
              pins: target.userData.net ? [{ pin: target.userData.name || '1', net: target.userData.net }] : []
            }, false);
          }
        }
        container.style.cursor = 'pointer';
      } else {
        clearThreeHighlight();
        hideTooltip();
        container.style.cursor = 'default';
        if (!pinnedComponent) {
          resetInspector();
        }
      }
    }

    function onThreeClick(e) {
      if (currentView !== '3d' || !renderer || !camera || !boardGroup) return;
      const container = document.getElementById('three-native');
      if (e) {
        const rect = container.getBoundingClientRect();
        mouseVector.x = ((e.clientX - rect.left) / rect.width) * 2 - 1;
        mouseVector.y = -((e.clientY - rect.top) / rect.height) * 2 + 1;
        raycaster.setFromCamera(mouseVector, camera);
      }
      const intersects = raycaster.intersectObjects(boardGroup.children, true);
      let target = null;
      for (const hit of intersects) {
        let cur = hit.object;
        while (cur && cur !== boardGroup && cur !== scene) {
          if (cur.userData && (cur.userData.name || cur.userData.type)) {
            target = cur;
            break;
          }
          cur = cur.parent;
        }
        if (target) break;
      }
      if (!target && hoveredObject) {
        target = hoveredObject;
      }
      if (target && target.userData) {
        switchSidebarTab('inspector');
        const comp = findComponent(target.userData.name);
        if (comp) {
          inspectComponent(comp, true);
        } else {
          inspectComponent({
            name: target.userData.name || target.userData.type.toUpperCase(),
            mpn: target.userData.part || '',
            ftype: target.userData.type.toUpperCase(),
            x: parseFloat(target.userData.pos?.match(/[\d.-]+/g)?.[0] || 0),
            y: parseFloat(target.userData.pos?.match(/[\d.-]+/g)?.[1] || 0),
            w: 0,
            h: 0,
            layer: target.userData.layer || 'top',
            pins: target.userData.net ? [{ pin: target.userData.name || '1', net: target.userData.net }] : []
          }, true);
        }
      }
    }

    function clearThreeHighlight() {
      if (hoveredObject) {
        hoveredObject.traverse(child => {
          if (child.isMesh && child.material && child.material.emissive) {
            if (pinnedComponent && (hoveredObject.userData?.name === pinnedComponent || child.userData?.name === pinnedComponent)) {
              child.material.emissive.setHex(0x86A881);
              child.material.emissiveIntensity = 0.8;
            } else {
              child.material.emissive.setHex(child.userData.__origEmissive !== undefined ? child.userData.__origEmissive : 0x000000);
              child.material.emissiveIntensity = child.userData.__origEmissiveIntensity !== undefined ? child.userData.__origEmissiveIntensity : 0.0;
            }
          }
        });
      }
      hoveredObject = null;
    }

    let cameraAnimId = null;

    function smoothAnimateCamera(targetPos, targetLookAt, targetUp, duration = 600) {
      if (!camera || !controls) return;
      if (cameraAnimId) cancelAnimationFrame(cameraAnimId);

      const startPos = camera.position.clone();
      const startLookAt = controls.target.clone();
      const startUp = camera.up.clone();
      const startTime = performance.now();

      function step() {
        const elapsed = performance.now() - startTime;
        const t = Math.min(1, elapsed / duration);
        const ease = t < 0.5 ? 4 * t * t * t : 1 - Math.pow(-2 * t + 2, 3) / 2;

        camera.position.lerpVectors(startPos, targetPos, ease);
        controls.target.lerpVectors(startLookAt, targetLookAt, ease);
        if (targetUp) {
          camera.up.lerpVectors(startUp, targetUp, ease).normalize();
        }
        controls.update();

        if (t < 1) {
          cameraAnimId = requestAnimationFrame(step);
        } else {
          camera.position.copy(targetPos);
          controls.target.copy(targetLookAt);
          if (targetUp) camera.up.copy(targetUp);
          controls.update();
          cameraAnimId = null;
        }
      }
      cameraAnimId = requestAnimationFrame(step);
    }

    function setCameraPreset(preset) {
      if (engine3d === 'cad' && window.cadCameraController) {
        if (preset === 'TOP') {
          window.cadCameraController.animateToPreset('Top Down');
        } else if (preset === 'FRONT') {
          window.cadCameraController.animateToPreset('Front');
        } else if (preset === 'ISO' || preset === 'RESET') {
          window.cadCameraController.animateToPreset('Top Left Corner');
        }
        return;
      }
      if (!controls || !camera) return;
      const dist = Math.max(boardWidth, boardHeight) * 1.8;
      const tx = boardCenterX;
      const tz = boardCenterZ;
      const targetVec = new THREE.Vector3(tx, 0, tz);

      if (preset === 'TOP') {
        smoothAnimateCamera(new THREE.Vector3(tx, dist, tz + 0.001), targetVec, new THREE.Vector3(0, 0, -1));
      } else if (preset === 'FRONT') {
        smoothAnimateCamera(new THREE.Vector3(tx, dist * 0.1, tz + dist), targetVec, new THREE.Vector3(0, 1, 0));
      } else if (preset === 'ISO' || preset === 'RESET') {
        smoothAnimateCamera(new THREE.Vector3(tx + dist * 0.7, dist * 0.8, tz + dist * 0.7), targetVec, new THREE.Vector3(0, 1, 0));
      }
    }

    function makeTextSprite(message) {
      const c = document.createElement('canvas');
      c.width = 256;
      c.height = 64;
      const ctx = c.getContext('2d');
      ctx.fillStyle = '#ffffff';
      ctx.font = 'bold 32px monospace';
      ctx.textAlign = 'center';
      ctx.textBaseline = 'middle';
      ctx.fillText(message, 128, 32);

      const tex = new THREE.CanvasTexture(c);
      tex.minFilter = THREE.LinearFilter;
      const mat = new THREE.SpriteMaterial({ map: tex, transparent: true });
      const sprite = new THREE.Sprite(mat);
      const aspect = c.width / c.height;
      sprite.scale.set(1.5 * aspect, 1.5, 1);
      return sprite;
    }

    function build3DScene() {
      if (!boardGroup) return;

      while (boardGroup.children.length > 0) {
        const obj = boardGroup.children[0];
        boardGroup.remove(obj);
        if (obj.geometry) obj.geometry.dispose();
      }

      const elements = getElementsArray();

      const boards = elements.filter(e => e.type === 'pcb_board');
      boardWidth = 60;
      boardHeight = 40;
      boardCenterX = 0;
      boardCenterZ = 0;

      if (boards.length > 0) {
        const b = boards[0];
        boardWidth = b.width || 60;
        boardHeight = b.height || 40;
        boardCenterX = b.center?.x || 0;
        boardCenterZ = b.center?.y || 0;
      } else {
        let minX = Infinity, maxX = -Infinity, minZ = Infinity, maxZ = -Infinity;
        elements.forEach(e => {
          const x = e.x ?? e.center?.x;
          const z = e.y ?? e.center?.y;
          if (x !== undefined && z !== undefined) {
            if (x < minX) minX = x;
            if (x > maxX) maxX = x;
            if (z < minZ) minZ = z;
            if (z > maxZ) maxZ = z;
          }
        });
        if (minX !== Infinity) {
          boardWidth = Math.max(20, (maxX - minX) + 20);
          boardHeight = Math.max(20, (maxZ - minZ) + 20);
          boardCenterX = (minX + maxX) / 2;
          boardCenterZ = (minZ + maxZ) / 2;
        }
      }

      const substrateThickness = 1.6;
      const boardMat = new THREE.MeshStandardMaterial({
        color: 0x112417,
        roughness: 0.5,
        metalness: 0.1
      });
      const boardGeo = new THREE.BoxGeometry(boardWidth, substrateThickness, boardHeight);
      const boardMesh = new THREE.Mesh(boardGeo, boardMat);
      boardMesh.position.set(boardCenterX, 0, boardCenterZ);
      boardGroup.add(boardMesh);

      const padMat = new THREE.MeshStandardMaterial({
        color: 0xd4af37,
        metalness: 0.85,
        roughness: 0.25
      });

      elements.filter(e => e.type === 'pcb_smtpad').forEach(pad => {
        const px = pad.x ?? pad.center?.x ?? 0;
        const pz = pad.y ?? pad.center?.y ?? 0;
        const isBottom = pad.layer === 'bottom';
        const py = isBottom ? -(substrateThickness / 2 + 0.02) : (substrateThickness / 2 + 0.02);
        const shape = pad.shape || (pad.radius ? 'circle' : 'rect');
        let padMesh;
        if (shape === 'circle') {
          const r = pad.radius || ((pad.width || 1.0) / 2);
          const geo = new THREE.CylinderGeometry(r, r, 0.04, 24);
          padMesh = new THREE.Mesh(geo, padMat.clone());
        } else {
          const pw = pad.width || 1.2;
          const ph = pad.height || 1.2;
          const geo = new THREE.BoxGeometry(pw, 0.04, ph);
          padMesh = new THREE.Mesh(geo, padMat.clone());
        }
        padMesh.position.set(px, py, pz);

        const parentComp = Object.values(componentsMap).find(c => c.id === pad.pcb_component_id || c.pcbComponentId === pad.pcb_component_id);
        const pinHint = pad.port_hints?.[0] || '';
        const pinInfo = parentComp?.pins?.find(p => p.pin === String(pinHint) || (pad.port_hints && pad.port_hints.includes(p.pin)));
        const padNet = pad.net || pinInfo?.net || pad.subcircuit_id || '';
        const padName = parentComp ? `${parentComp.name}.${pinHint || 'PAD'}` : (pinHint ? `PAD ${pinHint}` : 'PAD');

        padMesh.userData = {
          type: 'smtpad',
          name: padName,
          part: parentComp?.mpn || parentComp?.ftype || 'PAD',
          mpn: parentComp?.mpn || '',
          pos: `(${px.toFixed(2)}, ${pz.toFixed(2)}) mm`,
          layer: pad.layer || 'top',
          pins: parentComp?.pins?.length || 1,
          extra: padNet ? `NET: ${padNet}` : (parentComp ? `${parentComp.name}` : ''),
          net: padNet
        };
        boardGroup.add(padMesh);
      });

      const viaMat = new THREE.MeshStandardMaterial({
        color: 0xc87d32,
        metalness: 0.8,
        roughness: 0.3
      });
      const holeMat = new THREE.MeshBasicMaterial({ color: 0x050505 });

      elements.filter(e => e.type === 'pcb_via' || e.type === 'pcb_plated_hole').forEach(via => {
        const vx = via.x ?? via.center?.x ?? 0;
        const vz = via.y ?? via.center?.y ?? 0;
        const outerR = ((via.outer_diameter || 0.6) / 2);
        const holeR = ((via.hole_diameter || 0.3) / 2);

        const connectedTrace = elements.find(e => e.type === 'pcb_trace' && (e.route || []).some(pt => Math.hypot(pt.x - vx, pt.y - vz) < 0.2));
        const viaNet = via.connection_name || via.net || connectedTrace?.connection_name || '';

        const viaUserData = {
          type: via.type === 'pcb_via' ? 'via' : 'plated_hole',
          name: via.name || (via.type === 'pcb_via' ? (viaNet ? `VIA [${viaNet}]` : 'VIA') : (viaNet ? `HOLE [${viaNet}]` : 'PLATED HOLE')),
          part: via.type === 'pcb_via' ? `VIA dia=${via.outer_diameter || 0.6}mm` : `HOLE dia=${via.hole_diameter || 0.3}mm`,
          mpn: '',
          pos: `(${vx.toFixed(2)}, ${vz.toFixed(2)}) mm`,
          layer: via.layers?.join('/') || 'through',
          pins: 1,
          extra: viaNet ? `NET: ${viaNet}` : 'THROUGH-HOLE',
          net: viaNet
        };

        const viaGeo = new THREE.CylinderGeometry(outerR, outerR, substrateThickness + 0.06, 24);
        const viaMesh = new THREE.Mesh(viaGeo, viaMat.clone());
        viaMesh.position.set(vx, 0, vz);
        viaMesh.userData = viaUserData;
        boardGroup.add(viaMesh);

        const holeGeo = new THREE.CylinderGeometry(holeR, holeR, substrateThickness + 0.08, 16);
        const holeMesh = new THREE.Mesh(holeGeo, holeMat);
        holeMesh.position.set(vx, 0, vz);
        holeMesh.userData = viaUserData;
        boardGroup.add(holeMesh);
      });

      elements.filter(e => e.type === 'pcb_trace').forEach(trace => {
        const route = trace.route || [];
        if (route.length < 2) return;
        const isBottom = route[0].layer === 'bottom' || trace.layer === 'bottom';
        const color = isBottom ? 0x38bdf8 : 0xc87d32;
        const py = isBottom ? -(substrateThickness / 2 + 0.03) : (substrateThickness / 2 + 0.03);
        const traceMat = new THREE.MeshStandardMaterial({
          color: color,
          metalness: 0.8,
          roughness: 0.35,
          side: THREE.DoubleSide
        });

        for (let i = 0; i < route.length - 1; i++) {
          const p1 = route[i];
          const p2 = route[i + 1];
          const w = p1.width || trace.width || 0.3;
          const dx = p2.x - p1.x;
          const dz = p2.y - p1.y;
          const len = Math.sqrt(dx * dx + dz * dz);
          if (len < 0.001) continue;

          const angle = Math.atan2(dz, dx);
          const geo = new THREE.PlaneGeometry(len, w);
          geo.rotateX(-Math.PI / 2);
          geo.rotateY(-angle);

          const midX = (p1.x + p2.x) / 2;
          const midZ = (p1.y + p2.y) / 2;
          const traceLayer = isBottom ? 'bottom' : 'top';
          const traceNet = trace.connection_name || 'SIGNAL';

          const mesh = new THREE.Mesh(geo, traceMat);
          mesh.position.set(midX, py, midZ);
          mesh.userData = {
            type: 'trace',
            name: `TRACE [${traceNet}]`,
            part: `WIDTH ${w.toFixed(2)}mm`,
            mpn: '',
            pos: `(${midX.toFixed(2)}, ${midZ.toFixed(2)}) mm`,
            layer: traceLayer,
            pins: 0,
            extra: `LEN ${len.toFixed(2)}mm`,
            net: traceNet
          };
          boardGroup.add(mesh);
        }
      });

      const silverMat = new THREE.MeshStandardMaterial({
        color: 0xdce4ec,
        roughness: 0.2,
        metalness: 0.95
      });
      const goldMat = new THREE.MeshStandardMaterial({
        color: 0xf59e0b,
        roughness: 0.25,
        metalness: 0.9
      });
      const darkEpoxyMat = new THREE.MeshStandardMaterial({
        color: 0x18181b,
        roughness: 0.6,
        metalness: 0.15
      });
      const ceramicCapMat = new THREE.MeshStandardMaterial({
        color: 0x9b7653,
        roughness: 0.45,
        metalness: 0.05
      });
      const ceramicResMat = new THREE.MeshStandardMaterial({
        color: 0x222225,
        roughness: 0.65,
        metalness: 0.1
      });

      elements.filter(e => e.type === 'pcb_component').forEach(comp => {
        const cx = comp.center?.x ?? comp.x ?? 0;
        const cz = comp.center?.y ?? comp.y ?? 0;
        const cw = Math.max(comp.width || 4, 0.8);
        const ch = Math.max(comp.height || 4, 0.8);
        const isBottom = comp.layer === 'bottom';

        const compName = Object.keys(componentsMap).find(k => componentsMap[k].id === comp.pcb_component_id) || comp.pcb_component_id || 'U';
        const compData = componentsMap[compName] || {};
        const ftype = (compData.ftype || '').toLowerCase();
        const nameUpper = compName.toUpperCase();
        const pinsCount = compData.pins?.length || 0;

        const compGroup = new THREE.Group();
        const userData = {
          type: 'component',
          name: compName,
          part: compData.mpn || compData.ftype || 'IC',
          mpn: compData.mpn || '',
          pos: `(${cx.toFixed(2)}, ${cz.toFixed(2)}) mm`,
          layer: comp.layer || 'top',
          pins: pinsCount,
          extra: `${pinsCount} pins`,
          net: compData.pins?.[0]?.net || ''
        };
        compGroup.userData = userData;

        if (ftype.includes('resistor') || nameUpper.startsWith('R')) {
          const thick = 0.55;
          const cy = isBottom ? -(substrateThickness / 2 + thick / 2 + 0.03) : (substrateThickness / 2 + thick / 2 + 0.03);
          const isVert = ch > cw;
          const len = isVert ? ch : cw;
          const wid = isVert ? cw : ch;
          const capLen = Math.max(len * 0.22, 0.2);
          const bodyLen = Math.max(len - capLen * 2, 0.2);

          const bodyGeo = isVert ? new THREE.BoxGeometry(wid, thick, bodyLen) : new THREE.BoxGeometry(bodyLen, thick, wid);
          const bodyMesh = new THREE.Mesh(bodyGeo, ceramicResMat.clone());
          bodyMesh.userData = userData;
          compGroup.add(bodyMesh);

          const capGeo = isVert ? new THREE.BoxGeometry(wid * 1.02, thick * 1.02, capLen) : new THREE.BoxGeometry(capLen, thick * 1.02, wid * 1.02);
          const capOffset = (bodyLen + capLen) / 2;
          const cap1 = new THREE.Mesh(capGeo, silverMat);
          const cap2 = new THREE.Mesh(capGeo, silverMat);
          if (isVert) {
            cap1.position.set(0, 0, -capOffset);
            cap2.position.set(0, 0, capOffset);
          } else {
            cap1.position.set(-capOffset, 0, 0);
            cap2.position.set(capOffset, 0, 0);
          }
          cap1.userData = userData;
          cap2.userData = userData;
          compGroup.add(cap1);
          compGroup.add(cap2);
          compGroup.position.set(cx, cy, cz);
        } else if (ftype.includes('capacitor') || nameUpper.startsWith('C')) {
          const thick = 0.65;
          const cy = isBottom ? -(substrateThickness / 2 + thick / 2 + 0.03) : (substrateThickness / 2 + thick / 2 + 0.03);
          const isVert = ch > cw;
          const len = isVert ? ch : cw;
          const wid = isVert ? cw : ch;
          const capLen = Math.max(len * 0.22, 0.2);
          const bodyLen = Math.max(len - capLen * 2, 0.2);

          const bodyGeo = isVert ? new THREE.BoxGeometry(wid, thick, bodyLen) : new THREE.BoxGeometry(bodyLen, thick, wid);
          const bodyMesh = new THREE.Mesh(bodyGeo, ceramicCapMat.clone());
          bodyMesh.userData = userData;
          compGroup.add(bodyMesh);

          const capGeo = isVert ? new THREE.BoxGeometry(wid * 1.02, thick * 1.02, capLen) : new THREE.BoxGeometry(capLen, thick * 1.02, wid * 1.02);
          const capOffset = (bodyLen + capLen) / 2;
          const cap1 = new THREE.Mesh(capGeo, silverMat);
          const cap2 = new THREE.Mesh(capGeo, silverMat);
          if (isVert) {
            cap1.position.set(0, 0, -capOffset);
            cap2.position.set(0, 0, capOffset);
          } else {
            cap1.position.set(-capOffset, 0, 0);
            cap2.position.set(capOffset, 0, 0);
          }
          cap1.userData = userData;
          cap2.userData = userData;
          compGroup.add(cap1);
          compGroup.add(cap2);
          compGroup.position.set(cx, cy, cz);
        } else if (ftype.includes('led') || nameUpper.startsWith('LED')) {
          const thick = 0.85;
          const cy = isBottom ? -(substrateThickness / 2 + thick / 2 + 0.03) : (substrateThickness / 2 + thick / 2 + 0.03);
          const baseMesh = new THREE.Mesh(new THREE.BoxGeometry(cw, 0.3, ch), silverMat);
          baseMesh.position.y = -thick / 2 + 0.15;
          baseMesh.userData = userData;
          compGroup.add(baseMesh);

          const ledColor = nameUpper.includes('RED') ? 0xc55454 : nameUpper.includes('BLUE') ? 0x38bdf8 : 0x86A881;
          const ledMat = new THREE.MeshStandardMaterial({
            color: ledColor,
            emissive: ledColor,
            emissiveIntensity: 0.6,
            roughness: 0.2,
            metalness: 0.1,
            transparent: true,
            opacity: 0.85
          });
          const domeMesh = new THREE.Mesh(new THREE.BoxGeometry(cw * 0.8, thick - 0.3, ch * 0.8), ledMat);
          domeMesh.position.y = 0.15;
          domeMesh.userData = userData;
          compGroup.add(domeMesh);
          compGroup.position.set(cx, cy, cz);
        } else if (ftype.includes('header') || ftype.includes('connector') || nameUpper.startsWith('J') || nameUpper.startsWith('HDR') || nameUpper.startsWith('CON') || nameUpper.startsWith('P')) {
          const thick = 2.5;
          const cy = isBottom ? -(substrateThickness / 2 + thick / 2 + 0.03) : (substrateThickness / 2 + thick / 2 + 0.03);
          const baseMesh = new THREE.Mesh(new THREE.BoxGeometry(cw, thick, ch), darkEpoxyMat.clone());
          baseMesh.userData = userData;
          compGroup.add(baseMesh);

          const pinH = 6.0;
          const pinW = 0.64;
          const pinGeo = new THREE.BoxGeometry(pinW, pinH, pinW);
          const nPins = Math.max(pinsCount || 2, Math.round(Math.max(cw, ch) / 2.54) || 2);
          const isVert = ch > cw;
          for (let p = 0; p < nPins; p++) {
            const pinMesh = new THREE.Mesh(pinGeo, goldMat);
            const offset = (p - (nPins - 1) / 2) * (Math.max(cw, ch) / nPins);
            const px = isVert ? 0 : offset;
            const pz = isVert ? offset : 0;
            const py = isBottom ? -pinH / 2 : pinH / 2;
            pinMesh.position.set(px, py, pz);
            pinMesh.userData = userData;
            compGroup.add(pinMesh);
          }
          compGroup.position.set(cx, cy, cz);
        } else if (ftype.includes('switch') || ftype.includes('button') || nameUpper.startsWith('SW') || nameUpper.startsWith('BTN')) {
          const thick = 1.6;
          const cy = isBottom ? -(substrateThickness / 2 + thick / 2 + 0.03) : (substrateThickness / 2 + thick / 2 + 0.03);
          const baseMesh = new THREE.Mesh(new THREE.BoxGeometry(cw, thick, ch), silverMat);
          baseMesh.userData = userData;
          compGroup.add(baseMesh);

          const btnMat = new THREE.MeshStandardMaterial({ color: 0x0f172a, roughness: 0.8 });
          const btnRadius = Math.min(cw, ch) * 0.3;
          const btnMesh = new THREE.Mesh(new THREE.CylinderGeometry(btnRadius, btnRadius, 0.8, 16), btnMat);
          btnMesh.position.y = thick / 2 + 0.4;
          btnMesh.userData = userData;
          compGroup.add(btnMesh);
          compGroup.position.set(cx, cy, cz);
        } else if (ftype.includes('test') || nameUpper.startsWith('TP')) {
          const cy = isBottom ? -(substrateThickness / 2 + 0.4) : (substrateThickness / 2 + 0.4);
          const ringMesh = new THREE.Mesh(new THREE.CylinderGeometry(0.8, 0.8, 0.1, 16), goldMat);
          ringMesh.userData = userData;
          compGroup.add(ringMesh);
          const beadMesh = new THREE.Mesh(new THREE.SphereGeometry(0.4, 12, 12), goldMat);
          beadMesh.position.y = 0.3;
          beadMesh.userData = userData;
          compGroup.add(beadMesh);
          compGroup.position.set(cx, cy, cz);
        } else {
          const thick = 1.4;
          const cy = isBottom ? -(substrateThickness / 2 + thick / 2 + 0.05) : (substrateThickness / 2 + thick / 2 + 0.05);
          const chipMesh = new THREE.Mesh(new THREE.BoxGeometry(cw, thick, ch), darkEpoxyMat.clone());
          chipMesh.userData = userData;
          compGroup.add(chipMesh);

          const dotMat = new THREE.MeshStandardMaterial({ color: 0xffffff, roughness: 0.3 });
          const dotMesh = new THREE.Mesh(new THREE.CylinderGeometry(0.2, 0.2, 0.05, 12), dotMat);
          dotMesh.position.set(-cw / 2 + 0.6, thick / 2 + 0.03, -ch / 2 + 0.6);
          dotMesh.userData = userData;
          compGroup.add(dotMesh);

          const totalPins = pinsCount || (cw > 8 ? 16 : 8);
          const sidePins = Math.max(2, Math.floor(totalPins / 2));
          const pinW = 0.4;
          const pinLen = 0.8;
          const pinH = 0.2;
          const pinY = isBottom ? thick / 2 - 0.1 : -thick / 2 + 0.1;

          for (let p = 0; p < sidePins; p++) {
            const offset = (p - (sidePins - 1) / 2) * (ch / sidePins);
            const leftPin = new THREE.Mesh(new THREE.BoxGeometry(pinLen, pinH, pinW), silverMat);
            leftPin.position.set(-cw / 2 - pinLen / 2 + 0.1, pinY, offset);
            leftPin.userData = userData;
            compGroup.add(leftPin);

            const rightPin = new THREE.Mesh(new THREE.BoxGeometry(pinLen, pinH, pinW), silverMat);
            rightPin.position.set(cw / 2 + pinLen / 2 - 0.1, pinY, offset);
            rightPin.userData = userData;
            compGroup.add(rightPin);
          }
          compGroup.position.set(cx, cy, cz);
        }

        boardGroup.add(compGroup);

        const sprite = makeTextSprite(compName);
        const spriteY = isBottom ? -(substrateThickness / 2 + 1.8) : (substrateThickness / 2 + 1.8);
        sprite.position.set(cx, spriteY, cz);
        sprite.userData = userData;
        boardGroup.add(sprite);
      });

      const pcbComponents = elements.filter(e => e.type === 'pcb_component');
      elements.filter(e => e.type === 'pcb_silkscreen_text').forEach(st => {
        const text = st.text || '';
        if (!text) return;
        const sx = st.x ?? st.center?.x ?? st.anchor_position?.x ?? 0;
        const sz = st.y ?? st.center?.y ?? st.anchor_position?.y ?? 0;
        const isBottom = st.layer === 'bottom';

        let compThick = 0;
        pcbComponents.forEach(c => {
          const ccx = c.center?.x ?? c.x ?? 0;
          const ccz = c.center?.y ?? c.y ?? 0;
          const ccw = Math.max(c.width || 4, 1.0) / 2;
          const cch = Math.max(c.height || 4, 1.0) / 2;
          if (Math.abs(sx - ccx) <= ccw && Math.abs(sz - ccz) <= cch) {
            compThick = Math.max(compThick, 1.45);
          }
        });
        const sy = isBottom ? -(substrateThickness / 2 + compThick + 0.04) : (substrateThickness / 2 + compThick + 0.04);

        const canvas = document.createElement('canvas');
        const ctx = canvas.getContext('2d');
        const fontSize = Math.max(16, Math.round((st.font_size || 1.0) * 24));
        ctx.font = `bold ${fontSize}px sans-serif`;
        const metrics = ctx.measureText(text);
        const textW = Math.max(16, Math.ceil(metrics.width) + 8);
        const textH = Math.max(16, Math.ceil(fontSize * 1.3) + 4);
        canvas.width = textW;
        canvas.height = textH;

        ctx.font = `bold ${fontSize}px sans-serif`;
        ctx.fillStyle = '#FFFFFF';
        ctx.textAlign = 'center';
        ctx.textBaseline = 'middle';
        ctx.fillText(text, textW / 2, textH / 2);

        const tex = new THREE.CanvasTexture(canvas);
        tex.minFilter = THREE.LinearFilter;
        const planeW = (st.font_size || 1.0) * (textW / fontSize);
        const planeH = (st.font_size || 1.0) * 1.3;
        const planeGeo = new THREE.PlaneGeometry(planeW, planeH);
        const planeMat = new THREE.MeshBasicMaterial({ map: tex, transparent: true, side: THREE.DoubleSide });
        const planeMesh = new THREE.Mesh(planeGeo, planeMat);
        planeMesh.rotation.x = isBottom ? Math.PI / 2 : -Math.PI / 2;
        if (st.ccw_rotation) {
          const rotZ = ((st.ccw_rotation || 0) * Math.PI) / 180;
          planeMesh.rotation.z = isBottom ? -rotZ : rotZ;
        }
        planeMesh.position.set(sx, sy, sz);
        boardGroup.add(planeMesh);
      });
    }

    function updateStudio(data) {
      if (!data) return;
      if (data.board_name) {
        document.getElementById('board-name').textContent = data.board_name.toUpperCase();
      }
      if (window.Tscircuit && data.circuit_json) {
        try {
          schematicSvg = window.Tscircuit.convertCircuitJsonToSchematicSvg(data.circuit_json);
          if (!schematicSvg && data.schematic_svg) schematicSvg = data.schematic_svg;
        } catch (err) {
          if (data.schematic_svg) schematicSvg = data.schematic_svg;
        }
        try {
          pcbSvg = window.Tscircuit.convertCircuitJsonToPcbSvg(data.circuit_json);
          if (!pcbSvg && data.pcb_svg) pcbSvg = data.pcb_svg;
        } catch (err) {
          if (data.pcb_svg) pcbSvg = data.pcb_svg;
        }
      } else {
        if (data.schematic_svg) schematicSvg = data.schematic_svg;
        if (data.pcb_svg) pcbSvg = data.pcb_svg;
      }
      if (data.circuit_json) {
        lastCircuitJson = data.circuit_json;
        parseCircuitGraph();
        if (currentView === '3d') {
          build3DScene();
          updateEngineUI();
        }
      }
      updateDiagnostics(data.fuse_blown, data.diagnostics || []);
      if (currentView !== '3d') {
        renderCurrentView();
      }
    }

    window.addEventListener('tscircuit-ready', () => {
      if (lastCircuitJson) {
        if (currentView === '3d') {
          updateEngineUI();
        } else {
          renderCurrentView();
        }
      }
    });

    setTimeout(() => {
      if (!window.Tscircuit) {
        tscircuitFallback = true;
        renderCurrentView();
      }
    }, 2000);

    function fetchInitialData() {
      fetch('/api/circuit')
        .then(res => {
          if (!res.ok) throw new Error('Network error');
          return res.json();
        })
        .then(data => updateStudio(data))
        .catch(() => {});
    }

    function connectSSE() {
      const eventSource = new EventSource('/events');
      const liveDot = document.getElementById('live-dot');
      const liveStatus = document.getElementById('live-status');

      eventSource.onopen = () => {
        liveDot.style.background = 'var(--green)';
        liveStatus.textContent = 'SSE CONNECTED';
      };

      eventSource.onmessage = (event) => {
        try {
          const data = JSON.parse(event.data);
          updateStudio(data);
        } catch (err) {
          console.error(err);
        }
      };

      eventSource.onerror = () => {
        liveDot.style.background = 'var(--alert)';
        liveStatus.textContent = 'RECONNECTING...';
      };
    }

    const schEl = document.getElementById('schematic-container');
    if (schEl) {
      schEl.addEventListener('mousemove', (e) => {
        const compEl = e.target.closest('[data-schematic-component-id]');
        if (compEl) {
          const id = compEl.getAttribute('data-schematic-component-id');
          const comp = findComponent(id);
          if (comp) {
            inspectComponent(comp, false);
            showTooltip(e.clientX, e.clientY, {
              name: comp.name,
              type: comp.ftype || 'component',
              part: comp.mpn,
              pos: `(${comp.x.toFixed(2)}, ${comp.y.toFixed(2)}) mm`,
              layer: comp.layer || 'top',
              extra: `${comp.pins.length} pins`
            });
            return;
          }
        }
        const portEl = e.target.closest('[data-schematic-port-id]');
        if (portEl) {
          const portId = portEl.getAttribute('data-schematic-port-id');
          showTooltip(e.clientX, e.clientY, {
            name: `PORT: ${portId}`,
            type: 'PORT'
          });
          return;
        }
        hideTooltip();
        if (!pinnedComponent) resetInspector();
      });
      schEl.addEventListener('mouseleave', () => {
        hideTooltip();
        if (!pinnedComponent) resetInspector();
      });
      schEl.addEventListener('click', (e) => {
        const compEl = e.target.closest('[data-schematic-component-id]');
        if (compEl) {
          const id = compEl.getAttribute('data-schematic-component-id');
          const comp = findComponent(id);
          if (comp) selectComponent(comp.name);
        }
      });
    }

    const pcbEl = document.getElementById('pcb-container');
    if (pcbEl) {
      pcbEl.addEventListener('mousemove', (e) => {
        const compEl = e.target.closest('[data-pcb-component-id]') || e.target.closest('[data-component-id]');
        if (compEl) {
          const id = compEl.getAttribute('data-pcb-component-id') || compEl.getAttribute('data-component-id');
          const comp = findComponent(id);
          if (comp) {
            inspectComponent(comp, false);
            showTooltip(e.clientX, e.clientY, {
              name: comp.name,
              type: comp.ftype || 'component',
              part: comp.mpn,
              pos: `(${comp.x.toFixed(2)}, ${comp.y.toFixed(2)}) mm`,
              layer: comp.layer || 'top',
              extra: `${comp.pins.length} pins`
            });
            return;
          }
        }
      });
      pcbEl.addEventListener('mouseleave', () => {
        hideTooltip();
        if (!pinnedComponent) resetInspector();
      });
    }

    fetchInitialData();
    connectSSE();
  </script>
</body>
</html>