:root {
  --bg-primary: #1e1e2e;
  --bg-secondary: #181825;
  --bg-surface: #313244;
  --bg-hover: #45475a;
  --bg-active: #585b70;
  --text-primary: #cdd6f4;
  --text-secondary: #a6adc8;
  --text-muted: #6c7086;
  --border: #45475a;
  --accent: #89b4fa;
  --accent-hover: #74c7ec;
  --green: #a6e3a1;
  --red: #f38ba8;
  --yellow: #f9e2af;
  --toolbar-h: 44px;
  --statusbar-h: 28px;
  --palette-w: 200px;
  --stage-w: 380px;
  --radius: 6px;
}
* { margin:0; padding:0; box-sizing:border-box; }
body { font-family: 'Segoe UI','Microsoft YaHei',sans-serif; background:var(--bg-primary); color:var(--text-primary); overflow:hidden; height:100vh; display:flex; flex-direction:column; user-select:none; }

/* Titlebar */
#titlebar { height: 32px; background: var(--bg-secondary); display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--border); flex-shrink: 0; }
.titlebar-drag { display: flex; align-items: center; gap: 8px; padding-left: 12px; flex: 1; -webkit-app-region: drag; }
.app-logo { width: 18px; height: 18px; }
.app-title { font-size: 12px; font-weight: 600; color: var(--accent); }
.app-sep { color: var(--text-muted); font-size: 12px; }
.titlebar-drag #project-name { font-size: 12px; color: var(--text-secondary); font-weight: normal; }
.project-name-editable { cursor: pointer; padding: 2px 6px; border-radius: 4px; transition: background .15s; -webkit-app-region: no-drag; }
.project-name-editable:hover { background: var(--bg-hover); color: var(--text-primary); }
.tb-btn-small { background:transparent; border:none; color:var(--text-muted); font-size:11px; cursor:pointer; padding:2px 4px; border-radius:3px; transition:all .15s; -webkit-app-region: no-drag; }
.tb-btn-small:hover { color:var(--accent); background:var(--bg-hover); }
.titlebar-controls { display: flex; -webkit-app-region: no-drag; }
.win-btn { width: 46px; height: 32px; background: transparent; border: none; color: var(--text-secondary); font-size: 12px; cursor: pointer; transition: background .15s; }
.win-btn:hover { background: var(--bg-hover); color: var(--text-primary); }
.win-close-btn:hover { background: var(--red); color: #fff; }

/* Editor Screen */
#editor-screen { height:100vh; display:flex; flex-direction:column; }

/* Toolbar */
#toolbar { height:var(--toolbar-h); background:var(--bg-secondary); display:flex; align-items:center; justify-content:space-between; padding:0 12px; border-bottom:1px solid var(--border); flex-shrink:0; }
.toolbar-left,.toolbar-center,.toolbar-right { display:flex; align-items:center; gap:6px; }
.toolbar-center { flex:1; justify-content:center; }
.toolbar-center span { font-weight:700; font-size:14px; color:var(--accent); }
.tb-btn { background:var(--bg-surface); color:var(--text-primary); border:1px solid var(--border); border-radius:var(--radius); padding:4px 12px; font-size:12px; cursor:pointer; transition:all .15s; }
.tb-btn:hover { background:var(--bg-hover); border-color:var(--accent); }
.tb-btn.tb-run { background:#1a3a1a; color:var(--green); border-color:#2d5a2d; }
.tb-btn.tb-run:hover { background:#2d5a2d; }
.tb-btn.tb-stop { background:#3a1a1a; color:var(--red); border-color:#5a2d2d; }
.tb-btn.tb-stop:hover { background:#5a2d2d; }
.tb-btn:disabled { opacity:.4; cursor:not-allowed; }
.tb-sep { width:1px; height:24px; background:var(--border); margin:0 4px; }
.toolbar-right span { font-size:12px; color:var(--text-secondary); }

/* Modal overlay (for AddNodeDialog fallback etc.) */
.modal-overlay { position:fixed; inset:0; background:rgba(0,0,0,0.6); display:flex; align-items:center; justify-content:center; z-index:2000; backdrop-filter:blur(4px); }
.modal-overlay.hidden { display:none; }
.modal-content { background:var(--bg-secondary); border:1px solid var(--border); border-radius:12px; overflow:hidden; box-shadow:0 8px 32px rgba(0,0,0,0.5); }
.modal-header { display:flex; align-items:center; justify-content:space-between; padding:12px 16px; border-bottom:1px solid var(--border); }
.modal-header h3 { font-size:14px; font-weight:600; color:var(--accent); margin:0; }
.modal-close { background:transparent; border:none; color:var(--text-secondary); font-size:20px; cursor:pointer; padding:0 4px; line-height:1; }
.modal-close:hover { color:var(--red); }

/* Menu bar */
#menubar { height:28px; background:var(--bg-secondary); display:flex; align-items:center; border-bottom:1px solid var(--border); flex-shrink:0; padding:0 4px; position:relative; z-index:500; }
.menu-item { position:relative; padding:4px 10px; font-size:12px; color:var(--text-secondary); cursor:pointer; border-radius:4px; transition:background .12s; }
.menu-item:hover, .menu-item.open { background:var(--bg-hover); color:var(--text-primary); }
.menu-dropdown { display:none; position:absolute; top:100%; left:0; min-width:200px; background:var(--bg-secondary); border:1px solid var(--border); border-radius:6px; box-shadow:0 4px 16px rgba(0,0,0,0.4); padding:4px 0; z-index:600; }
.menu-item.open .menu-dropdown { display:block; }
.menu-dropdown-item { padding:6px 16px; font-size:12px; color:var(--text-primary); cursor:pointer; display:flex; align-items:center; gap:8px; transition:background .1s; }
.menu-dropdown-item:hover { background:var(--bg-hover); }
.menu-dropdown-item .menu-shortcut { margin-left:auto; font-size:10px; color:var(--text-muted); }
.menu-sep { height:1px; background:var(--border); margin:4px 8px; }

/* Panel fullscreen (blocks/JS editor) */
.panel-fullscreen {
  position: fixed !important;
  inset: 0 !important;
  z-index: 9000 !important;
  width: 100vw !important;
  height: 100vh !important;
  background: var(--bg-primary) !important;
  border: none !important;
  border-radius: 0 !important;
  display: flex !important;
  flex-direction: column !important;
}
.panel-fullscreen > #script-tabs {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.panel-fullscreen > #script-tabs .script-tab {
  padding: 10px 24px;
  font-size: 13px;
}
.panel-fullscreen > .fullscreen-exit {
  position: absolute;
  top: 6px;
  right: 6px;
  z-index: 9001;
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 11px;
  cursor: pointer;
  opacity: 0.85;
  transition: opacity 0.15s;
}
.panel-fullscreen > .fullscreen-exit:hover { opacity: 1; background: var(--bg-hover); }
.panel-fullscreen #script-blocks-content,
.panel-fullscreen #script-js-content { flex: 1; overflow: hidden; }

/* Script blocks content: palette + canvas side-by-side */
#script-blocks-content {
  display: flex;
  flex: 1;
  overflow: hidden;
}
#script-blocks-content > #palette-panel {
  width: var(--palette-w);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}
#script-blocks-content > #editor-panel {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: var(--bg-primary);
}

/* Main layout */
#main-layout { flex:1; display:flex; overflow:hidden; }

/* Palette */
#palette-panel { width:var(--palette-w); background:var(--bg-secondary); border-right:1px solid var(--border); display:flex; flex-direction:column; flex-shrink:0; }
#palette-categories { display:flex; flex-wrap:wrap; gap:3px; padding:8px; border-bottom:1px solid var(--border); }
.cat-btn { padding:3px 8px; border-radius:var(--radius); border:1px solid transparent; background:transparent; color:var(--text-secondary); font-size:11px; cursor:pointer; transition:all .15s; }
.cat-btn:hover { background:var(--bg-hover); }
.cat-btn.active { color:#fff; border-color:currentColor; }
#palette-blocks { flex:1; overflow-y:auto; padding:8px; display:flex; flex-direction:column; gap:6px; }

/* Editor */
#editor-panel { flex:1; position:relative; overflow:hidden; background:var(--bg-primary); }
#editor-canvas { position:absolute; top:0; left:0; width:100%; height:100%; }
#canvas-zoom-controls { position:absolute; bottom:8px; right:8px; display:flex; gap:4px; align-items:center; background:var(--bg-surface); border:1px solid var(--border); border-radius:var(--radius); padding:4px 8px; font-size:11px; opacity:0.85; }
#canvas-zoom-controls:hover { opacity:1; }
#canvas-zoom-controls button { background:transparent; border:none; color:var(--text-primary); cursor:pointer; padding:2px 6px; border-radius:3px; font-size:14px; }
#canvas-zoom-controls button:hover { background:var(--bg-hover); }
#zoom-level { color:var(--text-secondary); min-width:40px; text-align:center; }

/* Stage panel */
#stage-panel { width:var(--stage-w); background:var(--bg-secondary); border-left:1px solid var(--border); display:flex; flex-direction:column; flex-shrink:0; }
#stage-tabs { display:flex; border-bottom:1px solid var(--border); }
.stage-tab { flex:1; padding:8px 0; background:transparent; border:none; color:var(--text-muted); font-size:12px; cursor:pointer; border-bottom:2px solid transparent; transition:all .15s; }
.stage-tab:hover { color:var(--text-secondary); }
.stage-tab.active { color:var(--accent); border-bottom-color:var(--accent); }
#stage-content { flex:1; display:flex; align-items:center; justify-content:center; background:#11111b; position:relative; }
#stage-canvas { background:#fff; border-radius:2px; max-width:100%; height:auto; }
#output-content { flex:1; display:flex; flex-direction:column; }
#output-log { flex:1; overflow-y:auto; padding:8px; font-family:'Cascadia Code','Consolas',monospace; font-size:12px; color:var(--text-secondary); white-space:pre-wrap; }
#sprites-content { flex:1; padding:8px; display:flex; flex-direction:column; gap:6px; }
#sprite-list { flex:1; overflow-y:auto; display:flex; flex-wrap:wrap; gap:6px; align-content:flex-start; }
.sprite-thumb { width:64px; height:64px; background:var(--bg-surface); border:1px solid var(--border); border-radius:var(--radius); display:flex; align-items:center; justify-content:center; font-size:24px; cursor:pointer; }
.sprite-thumb:hover { border-color:var(--accent); }
.sprite-thumb.selected { border-color:var(--accent); box-shadow:0 0 0 1px var(--accent); }
.sprite-toolbar { display:flex; gap:6px; padding:8px; border-top:1px solid var(--border); flex-wrap:wrap; }

/* Advanced (Godot-style) layout */
#advanced-layout { flex:1; display:flex; overflow:hidden; }
#advanced-layout.hidden { display:none!important; }

/* Left Dock: Scene Tree + FileSystem */
#left-dock { width:220px; background:var(--bg-secondary); border-right:1px solid var(--border); display:flex; flex-direction:column; flex-shrink:0; }
#scene-tree-panel { flex:1; display:flex; flex-direction:column; min-height:120px; overflow:hidden; }
#left-divider { height:4px; background:var(--border); cursor:row-resize; flex-shrink:0; }
#left-divider:hover { background:var(--accent); }
#filesystem-panel { height:200px; min-height:80px; display:flex; flex-direction:column; overflow:hidden; }

#inspector-panel { width:260px; background:var(--bg-secondary); border-left:1px solid var(--border); display:flex; flex-direction:column; flex-shrink:0; }

.panel-header { display:flex; align-items:center; justify-content:space-between; padding:8px 12px; border-bottom:1px solid var(--border); }
.panel-title { font-size:12px; font-weight:600; color:var(--text-secondary); text-transform:uppercase; letter-spacing:0.5px; }
.tb-btn-small { padding:2px 8px; font-size:14px; line-height:1; }

/* Scene Tree */
#scene-tree { flex:1; overflow-y:auto; padding:4px 0; }
.scene-node { display:flex; align-items:center; gap:4px; padding:4px 8px; cursor:pointer; font-size:12px; color:var(--text-primary); border-left:2px solid transparent; white-space:nowrap; }
.scene-node:hover { background:var(--bg-hover); }
.scene-node.selected { background:var(--bg-active); border-left-color:var(--accent); }
.scene-node.dragging { opacity:0.5; }
.scene-node.drag-over-top { border-top:2px solid var(--accent); }
.scene-node.drag-over-bottom { border-bottom:2px solid var(--accent); }
.scene-node.drag-over-self { background:var(--accent); color:white; }
.scene-node-arrow { width:12px; font-size:9px; color:var(--text-muted); cursor:pointer; flex-shrink:0; text-align:center; }
.scene-node-icon { font-size:13px; flex-shrink:0; }
.scene-node-name { flex:1; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.scene-node-vis, .scene-node-lock { font-size:10px; opacity:0.6; cursor:pointer; flex-shrink:0; padding:0 2px; }
.scene-node-vis:hover, .scene-node-lock:hover { opacity:1; }

#advanced-center { flex:1; display:flex; flex-direction:column; overflow:hidden; }
#viewport { flex:1; display:flex; align-items:center; justify-content:center; background:#11111b; min-height:200px; }
#viewport #stage-canvas { background:#fff; border-radius:2px; max-width:100%; height:auto; }

#center-divider { height:4px; background:var(--border); cursor:row-resize; flex-shrink:0; }
#center-divider:hover { background:var(--accent); }

#script-editor-panel { height:280px; min-height:120px; display:flex; flex-direction:column; background:var(--bg-primary); border-top:1px solid var(--border); }
#script-tabs { display:flex; border-bottom:1px solid var(--border); background:var(--bg-secondary); }
.script-tab { padding:6px 16px; background:transparent; border:none; color:var(--text-muted); font-size:12px; cursor:pointer; border-bottom:2px solid transparent; }
.script-tab:hover { color:var(--text-secondary); }
.script-tab.active { color:var(--accent); border-bottom-color:var(--accent); }

#script-blocks-content { flex:1; position:relative; overflow:hidden; }
#script-blocks-content #editor-canvas { position:absolute; top:0; left:0; width:100%; height:100%; }

#script-js-content { flex:1; overflow:hidden; }
#js-editor { width:100%; height:100%; }
#js-editor .CodeMirror { height:100%; font-size:13px; }

#inspector-content { flex:1; overflow-y:auto; padding:8px; }
.inspector-hint { font-size:11px; color:var(--text-muted); text-align:center; padding:20px 0; }
.inspector-group { margin-bottom:12px; }
.inspector-group-title { font-size:11px; color:var(--text-muted); margin-bottom:6px; font-weight:600; }
.inspector-row { display:flex; align-items:center; gap:6px; margin-bottom:4px; }
.inspector-label { width:60px; font-size:11px; color:var(--text-secondary); flex-shrink:0; }
.inspector-input { flex:1; background:var(--bg-surface); border:1px solid var(--border); border-radius:3px; color:var(--text-primary); padding:3px 6px; font-size:11px; }
.inspector-input:focus { border-color:var(--accent); outline:none; }
.inspector-input:disabled { opacity:0.5; cursor:not-allowed; }

/* FileSystem Dock */
#file-tree { flex:1; overflow-y:auto; padding:4px 0; }
.fs-entry { display:flex; align-items:center; gap:4px; padding:4px 8px; cursor:pointer; font-size:12px; color:var(--text-primary); }
.fs-entry:hover { background:var(--bg-hover); }
.fs-icon { font-size:13px; flex-shrink:0; }
.fs-name { flex:1; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.fs-subdir { margin-left:0; }

/* Add Node Dialog */
.add-node-modal { width:480px; max-width:90vw; max-height:80vh; display:flex; flex-direction:column; }
.add-node-search-wrap { padding:12px; border-bottom:1px solid var(--border); }
.add-node-search { width:100%; padding:8px 12px; background:var(--bg-surface); border:1px solid var(--border); border-radius:4px; color:var(--text-primary); font-size:13px; }
.add-node-search:focus { border-color:var(--accent); outline:none; }
.add-node-grid { display:grid; grid-template-columns:repeat(auto-fill, minmax(120px, 1fr)); gap:8px; padding:12px; overflow-y:auto; flex:1; }
.add-node-card { display:flex; flex-direction:column; align-items:center; gap:4px; padding:12px 8px; background:var(--bg-surface); border:1px solid var(--border); border-radius:6px; cursor:pointer; text-align:center; transition:border-color 0.15s; }
.add-node-card:hover { border-color:var(--accent); background:var(--bg-hover); }
.add-node-card-icon { font-size:24px; }
.add-node-card-name { font-size:12px; font-weight:600; color:var(--text-primary); }
.add-node-card-desc { font-size:10px; color:var(--text-muted); }
.add-node-empty { grid-column:1/-1; text-align:center; color:var(--text-muted); padding:24px 0; font-size:12px; }

/* Scene Type Selection Dialog (新建场景类型选择) */
.scene-type-dialog { position:fixed; inset:0; background:rgba(0,0,0,0.6); display:flex; align-items:center; justify-content:center; z-index:10000; backdrop-filter:blur(4px); }
.scene-type-dialog-box { background:var(--bg-secondary,#181825); border:1px solid var(--border,#45475a); border-radius:12px; padding:24px; min-width:360px; max-width:440px; box-shadow:0 12px 40px rgba(0,0,0,0.5); }
.scene-type-dialog-box h3 { margin:0 0 16px; font-size:15px; color:var(--accent,#89b4fa); }
.scene-type-dialog-box p { margin:0 0 12px; font-size:12px; color:var(--text-secondary,#a6adc8); }
.scene-type-cards { display:flex; gap:12px; margin:16px 0; }
.scene-type-card { flex:1; display:flex; flex-direction:column; align-items:center; gap:8px; padding:16px 12px; background:var(--bg-surface,#313244); border:2px solid var(--border,#45475a); border-radius:8px; cursor:pointer; transition:all 0.15s; }
.scene-type-card:hover { border-color:var(--accent,#89b4fa); background:var(--bg-hover,#45475a); }
.scene-type-card.selected { border-color:var(--accent,#89b4fa); background:rgba(137,180,250,0.1); }
.scene-type-card-icon { font-size:32px; }
.scene-type-card-name { font-size:14px; font-weight:700; color:var(--text-primary,#cdd6f4); }
.scene-type-card-desc { font-size:11px; color:var(--text-muted,#6c7086); text-align:center; line-height:1.4; }
.scene-type-card-badge { font-size:9px; padding:2px 6px; border-radius:4px; font-weight:600; }
.scene-type-dialog input[type="text"] { width:100%; padding:8px 10px; background:var(--bg-surface,#313244); border:1px solid var(--border,#45475a); border-radius:6px; color:var(--text-primary,#cdd6f4); font-size:13px; outline:none; box-sizing:border-box; }
.scene-type-dialog input[type="text"]:focus { border-color:var(--accent,#89b4fa); }
.scene-type-dialog-actions { display:flex; gap:8px; justify-content:flex-end; margin-top:16px; }

/* Statusbar */
#statusbar { height:var(--statusbar-h); background:var(--bg-secondary); border-top:1px solid var(--border); display:flex; align-items:center; justify-content:space-between; padding:0 12px; font-size:11px; color:var(--text-muted); flex-shrink:0; }

/* Context menu */
#context-menu { position:fixed; background:var(--bg-surface); border:1px solid var(--border); border-radius:var(--radius); padding:4px 0; z-index:1000; box-shadow:0 8px 24px rgba(0,0,0,.5); min-width:120px; }
#context-menu.hidden { display:none; }
.ctx-item { padding:6px 16px; font-size:12px; color:var(--text-primary); cursor:pointer; }
.ctx-item:hover { background:var(--bg-hover); }

/* Dialog */
.dialog-overlay { position:fixed; inset:0; background:rgba(0,0,0,.6); display:flex; align-items:center; justify-content:center; z-index:2000; backdrop-filter:blur(4px); }
.dialog-overlay.hidden { display:none; }
.dialog-box { background:var(--bg-surface); border:1px solid var(--border); border-radius:12px; padding:32px; text-align:center; max-width:400px; }
.dialog-box h2 { margin-bottom:8px; color:var(--accent); }
.dialog-box p { color:var(--text-secondary); margin-bottom:24px; font-size:14px; }
.dialog-actions { display:flex; gap:12px; justify-content:center; }

/* Scrollbar */
::-webkit-scrollbar { width:6px; height:6px; }
::-webkit-scrollbar-track { background:transparent; }
::-webkit-scrollbar-thumb { background:var(--bg-active); border-radius:3px; }
::-webkit-scrollbar-thumb:hover { background:var(--text-muted); }

.hidden { display:none!important; }

/* Parameter editor input */
.param-editor {
  position: fixed;
  z-index: 500;
  background: var(--bg-surface);
  border: 2px solid var(--accent);
  border-radius: 4px;
  color: var(--text-primary);
  font-size: 12px;
  font-family: 'Segoe UI','Microsoft YaHei',sans-serif;
  padding: 2px 6px;
  outline: none;
  box-shadow: 0 4px 12px rgba(0,0,0,.5);
  min-width: 50px;
  user-select: text;
  -webkit-user-select: text;
}
.param-editor:focus {
  border-color: var(--accent-hover);
}

/* Home Screen */
#home-screen { flex:1; display:flex; flex-direction:column; background:var(--bg-primary); overflow:hidden; }
.home-header { height:64px; background:var(--bg-secondary); display:flex; align-items:center; justify-content:space-between; padding:0 24px; border-bottom:1px solid var(--border); }
.home-logo { font-size:24px; font-weight:700; color:var(--accent); margin:0; }
.home-actions { display:flex; gap:12px; }
.home-body { flex:1; overflow-y:auto; padding:32px; }
.home-body h2 { color:var(--text-secondary); margin-bottom:16px; font-size:16px; }

/* Recent Projects */
#recent-projects { display:grid; grid-template-columns:repeat(auto-fill, minmax(280px, 1fr)); gap:16px; }
.recent-card { background:var(--bg-surface); border:1px solid var(--border); border-radius:var(--radius); padding:16px; cursor:pointer; transition:all .15s; }
.recent-card:hover { border-color:var(--accent); background:var(--bg-hover); }
.recent-card-name { font-weight:600; font-size:14px; margin-bottom:6px; }
.recent-card-path { font-size:11px; color:var(--text-muted); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.recent-card-time { font-size:11px; color:var(--text-muted); margin-top:4px; }
.recent-card-mode { display:inline-block; font-size:10px; padding:2px 6px; border-radius:3px; background:var(--bg-hover); color:var(--accent); margin-top:6px; }
.pin-btn { background:transparent; border:1px solid var(--border); border-radius:4px; font-size:12px; cursor:pointer; padding:2px 6px; color:var(--text-muted); transition:all .15s; }
.pin-btn:hover { border-color:var(--accent); color:var(--accent); }
.pin-btn.pinned { color:var(--accent); border-color:var(--accent); }
.card-del-btn { background:transparent; border:1px solid transparent; border-radius:4px; font-size:12px; cursor:pointer; padding:2px 6px; color:transparent; transition:all .15s; }
.recent-card:hover .card-del-btn { color:var(--text-muted); border-color:var(--border); }
.card-del-btn:hover { color:#f38ba8!important; border-color:#f38ba8!important; background:rgba(243,139,168,.1); }
#no-projects { text-align:center; padding:48px; color:var(--text-muted); }

/* Context Menu */
.ctx-menu {
  position:fixed;
  z-index:9999;
  background:var(--bg-secondary, #181825);
  border:1px solid var(--border, #313244);
  border-radius:8px;
  padding:4px 0;
  min-width:160px;
  box-shadow:0 8px 24px rgba(0,0,0,0.4);
  user-select:none;
}
.ctx-menu.hidden { display:none; }
.ctx-item {
  padding:8px 16px;
  font-size:13px;
  cursor:pointer;
  transition:background .1s;
  color:var(--text-primary, #cdd6f4);
}
.ctx-item:hover { background:var(--bg-hover, #313244); }
.ctx-divider { height:1px; background:var(--border, #313244); margin:4px 0; }
.ctx-danger { color:#f38ba8; }
.ctx-danger:hover { background:rgba(243,139,168,0.15); }

/* Mode Dialog */
.mode-dialog-box { max-width:500px; }
.mode-cards { display:grid; grid-template-columns:1fr 1fr; gap:16px; margin:24px 0; }
.mode-card { background:var(--bg-secondary); border:2px solid var(--border); border-radius:8px; padding:24px 16px; cursor:pointer; transition:all .2s; text-align:center; }
.mode-card:hover { border-color:var(--accent); background:var(--bg-hover); }
.mode-icon { font-size:36px; margin-bottom:12px; }
.mode-card h3 { color:var(--text-primary); margin-bottom:8px; font-size:14px; }
.mode-card p { font-size:12px; color:var(--text-secondary); margin:0; }

/* File Editor Panel */
#files-content { flex:1; display:flex; flex-direction:column; }
.file-editor-toolbar { display:flex; gap:6px; padding:8px; border-bottom:1px solid var(--border); }
#file-list { height:120px; overflow-y:auto; border-bottom:1px solid var(--border); }
.file-item { padding:6px 12px; font-size:12px; cursor:pointer; display:flex; justify-content:space-between; align-items:center; border-bottom:1px solid var(--bg-hover); }
.file-item:hover { background:var(--bg-hover); }
.file-item.active { background:var(--bg-active); color:var(--accent); }
.file-item-name { flex:1; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.file-item-delete { color:var(--red); cursor:pointer; padding:0 4px; opacity:0.6; }
.file-item-delete:hover { opacity:1; }
#file-editor-area { flex:1; background:var(--bg-primary); color:var(--text-primary); border:none; resize:none; padding:12px; font-family:'Cascadia Code','Consolas',monospace; font-size:12px; line-height:1.5; outline:none; tab-size:4; -moz-tab-size:4; }

/* Extension mode wider stage panel */
#stage-panel.extension-mode { --stage-w:480px; }

/* Param dropdown menu */
.param-dropdown-menu {
  position: fixed;
  z-index: 600;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  box-shadow: 0 8px 24px rgba(0,0,0,.6);
  overflow: hidden;
  max-height: 240px;
  overflow-y: auto;
}
.param-dropdown-item {
  padding: 6px 14px;
  font-size: 12px;
  color: var(--text-primary);
  cursor: pointer;
  transition: background .1s;
}
.param-dropdown-item:hover {
  background: var(--bg-hover);
}
.param-dropdown-item.active {
  color: var(--accent);
  font-weight: 600;
}

/* Mode Selector */
.mode-select {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 3px 8px;
  font-size: 11px;
  cursor: pointer;
  outline: none;
}
.mode-select:hover { border-color: var(--accent); }
.mode-select option { background: var(--bg-surface); color: var(--text-primary); }

/* Debug Panel */
#debug-content { flex:1; display:flex; flex-direction:column; }
.debug-toolbar { display:flex; gap:6px; padding:8px; border-bottom:1px solid var(--border); }
#debug-panel { flex:1; overflow-y:auto; padding:8px; }
.debug-section { margin-bottom:12px; }
.debug-section h4 { font-size:12px; color:var(--text-secondary); margin-bottom:6px; font-weight:600; }
.debug-var-list { display:flex; flex-direction:column; gap:2px; }
.debug-var-item { display:flex; justify-content:space-between; align-items:center; padding:3px 8px; background:var(--bg-primary); border-radius:3px; font-size:11px; }
.debug-var-name { color:var(--accent); font-family:'Cascadia Code','Consolas',monospace; }
.debug-var-val { color:var(--yellow); font-family:'Cascadia Code','Consolas',monospace; max-width:120px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.debug-exec-info { font-size:12px; color:var(--green); padding:4px 8px; background:var(--bg-primary); border-radius:3px; }
.debug-exec-id { font-size:10px; color:var(--text-muted); margin-top:2px; }
.debug-bp-remove { background:transparent; border:none; color:var(--red); cursor:pointer; font-size:14px; padding:0 4px; opacity:0.7; }
.debug-bp-remove:hover { opacity:1; }

/* Beginner mode hints */
.mode-beginner .cat-btn.advanced-hint { position:relative; }
.mode-beginner .cat-btn.advanced-hint::after { content:'⭐'; font-size:8px; position:absolute; top:-2px; right:-2px; }

/* Custom Prompt Dialog (替代 window.prompt) */
.custom-prompt-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 3000;
  backdrop-filter: blur(3px);
}
.custom-prompt-box {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  min-width: 320px;
  max-width: 420px;
  box-shadow: 0 12px 40px rgba(0,0,0,.6);
}
.custom-prompt-title {
  font-size: 14px;
  color: var(--text-primary);
  margin-bottom: 14px;
  font-weight: 600;
}
.custom-prompt-input {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 13px;
  padding: 8px 12px;
  outline: none;
  font-family: 'Segoe UI','Microsoft YaHei',sans-serif;
}
.custom-prompt-input:focus {
  border-color: var(--accent);
}
.custom-prompt-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 16px;
}

/* User Dropdown Menu */
.user-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 4px;
  min-width: 160px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 4px 0;
  box-shadow: 0 8px 24px rgba(0,0,0,.4);
  z-index: 1000;
}
.user-menu.hidden { display: none; }
.user-menu-item {
  display: block;
  width: 100%;
  padding: 10px 16px;
  text-align: left;
  font-size: 13px;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  transition: background 0.15s;
}
.user-menu-item:hover {
  background: var(--bg-hover, rgba(255,255,255,0.08));
}

/* Goto Label Dialog */
.goto-label-item {
  padding: 8px 12px;
  cursor: pointer;
  border-radius: 6px;
  font-size: 13px;
  color: var(--text-primary);
  transition: background 0.1s;
}
.goto-label-item:hover {
  background: var(--bg-hover);
}
.goto-label-item .goto-label-name {
  font-weight: 600;
  color: #f9e2af;
}
.goto-label-item .goto-label-type {
  font-size: 11px;
  color: var(--text-muted);
  margin-left: 8px;
}

/* Costume Library */
.costume-thumb {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 4px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all .15s;
}
.costume-thumb:hover {
  border-color: var(--accent);
  background: var(--bg-hover);
}
.costume-item:hover {
  border-color: var(--accent) !important;
  background: var(--bg-hover) !important;
}

/* ===== Data Analysis Mode ===== */
#data-layout {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow: hidden;
}
#data-toolbar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
#data-main {
  display: flex;
  flex: 1;
  overflow: hidden;
}
#data-code-panel {
  width: 50%;
  display: flex;
  flex-direction: column;
  min-width: 200px;
  border-right: none;
}
.data-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 12px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
}
.data-hint {
  font-weight: 400;
  color: var(--text-muted);
  font-size: 11px;
}
#data-editor {
  flex: 1;
  overflow: auto;
}
#data-editor .CodeMirror {
  height: 100%;
  font-size: 13px;
}
#data-divider {
  width: 4px;
  background: var(--border);
  cursor: col-resize;
  flex-shrink: 0;
  transition: background .15s;
}
#data-divider:hover {
  background: var(--accent);
}
#data-output-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 200px;
  overflow: hidden;
}
#data-output-tabs {
  display: flex;
  gap: 0;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.data-tab {
  padding: 6px 14px;
  font-size: 12px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  transition: all .15s;
  border-bottom: 2px solid transparent;
}
.data-tab:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}
.data-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.data-tab-content {
  flex: 1;
  overflow: auto;
  padding: 12px;
}
#data-chart-content {
  display: flex;
  align-items: center;
  justify-content: center;
}
#data-chart-canvas {
  max-width: 100%;
  max-height: 100%;
}
#data-log {
  font-family: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
  font-size: 13px;
  color: var(--text-primary);
  white-space: pre-wrap;
  word-break: break-all;
  margin: 0;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
.data-table th,
.data-table td {
  padding: 6px 10px;
  border: 1px solid var(--border);
  text-align: left;
}
.data-table th {
  background: var(--bg-secondary);
  color: var(--accent);
  font-weight: 600;
  position: sticky;
  top: 0;
}
.data-table tr:nth-child(even) {
  background: rgba(255,255,255,0.02);
}
.data-table tr:hover {
  background: var(--bg-hover);
}

/* ===== Data Export Dropdown ===== */
.data-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0,0,0,.4);
  z-index: 100;
  padding: 4px 0;
  margin-top: 2px;
}
.data-dropdown.hidden { display: none; }
.data-dropdown-title {
  padding: 6px 14px 2px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  pointer-events: none;
}
.data-dropdown-item {
  padding: 7px 14px;
  font-size: 13px;
  color: var(--text-primary);
  cursor: pointer;
  transition: background .15s;
  white-space: nowrap;
}
.data-dropdown-item:hover {
  background: var(--bg-hover);
  color: var(--accent);
}

/* ===== Minecraft Mod Development Mode ===== */
#mc-layout {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow: hidden;
}
#mc-toolbar {
  height: var(--toolbar-h);
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  padding: 0 12px;
  border-bottom: 1px solid var(--border);
  gap: 8px;
}
#mc-toolbar .mc-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  margin-right: auto;
}
#mc-platform-select {
  padding: 4px 8px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-primary);
  font-size: 13px;
  cursor: pointer;
}
#mc-platform-select:focus {
  outline: none;
  border-color: var(--accent);
}
#mc-main {
  display: flex;
  flex: 1;
  overflow: hidden;
}
#mc-editor-panel {
  flex: 1;
  display: flex;
  flex-direction: row;
  background: var(--bg-primary);
  overflow: hidden;
}
#mc-editor-panel > #palette-panel {
  width: var(--palette-w);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}
#mc-editor-panel > #editor-panel {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: var(--bg-primary);
}
#mc-editor-panel > #editor-panel #editor-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
#mc-divider {
  width: 4px;
  background: var(--border);
  cursor: col-resize;
  flex-shrink: 0;
}
#mc-divider:hover {
  background: var(--accent);
}
#mc-code-panel {
  width: 500px;
  min-width: 300px;
  max-width: 800px;
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  overflow: hidden;
}
#mc-code-header {
  height: 36px;
  display: flex;
  align-items: center;
  padding: 0 12px;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-secondary);
}
#mc-code-preview {
  flex: 1;
  overflow: auto;
}
#mc-code-preview .CodeMirror {
  height: 100%;
  font-size: 13px;
}
.mc-status {
  margin-left: 12px;
  font-size: 12px;
  color: var(--text-muted);
}

/* ===== Code Programming Mode ===== */
#code-layout {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow: hidden;
}
#code-toolbar {
  height: var(--toolbar-h);
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  padding: 0 12px;
  border-bottom: 1px solid var(--border);
  gap: 8px;
}
.code-lang-badge {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  padding: 3px 10px;
  background: rgba(137, 180, 250, 0.1);
  border: 1px solid var(--accent);
  border-radius: 4px;
  margin-right: auto;
}
.code-status-text {
  font-size: 12px;
  color: var(--text-muted);
}
#code-main {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow: hidden;
}
#code-editor-wrap {
  flex: 1;
  overflow: hidden;
}
#code-editor-wrap .CodeMirror {
  height: 100%;
  font-size: 14px;
  line-height: 1.6;
}
#code-output-wrap {
  height: 200px;
  min-height: 100px;
  max-height: 400px;
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border);
  background: var(--bg-tertiary);
}
#code-output-wrap.hidden {
  display: none;
}
#code-output-header {
  height: 32px;
  display: flex;
  align-items: center;
  padding: 0 12px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 600;
}
#code-output {
  flex: 1;
  overflow: auto;
  padding: 8px 12px;
  margin: 0;
  font-family: 'Cascadia Code', 'Consolas', monospace;
  font-size: 13px;
  color: var(--text-primary);
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.5;
}
#code-input-bar {
  display: flex;
  gap: 6px;
  padding: 6px 10px;
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
}
#code-input-bar.hidden {
  display: none;
}
#code-stdin-input {
  flex: 1;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-primary);
  padding: 5px 10px;
  font-family: 'Cascadia Code', 'Consolas', monospace;
  font-size: 13px;
  outline: none;
}
#code-stdin-input:focus {
  border-color: var(--accent);
}

/* CodeMirror hint dropdown */
.CodeMirror-hints {
  background: var(--bg-secondary, #181825) !important;
  border: 1px solid var(--border, #45475a) !important;
  border-radius: 6px !important;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4) !important;
  font-family: 'Cascadia Code', 'Consolas', monospace !important;
  font-size: 13px !important;
  max-height: 200px !important;
  z-index: 1000 !important;
}
.CodeMirror-hint {
  color: var(--text-primary, #cdd6f4) !important;
  padding: 4px 10px !important;
  border-radius: 4px !important;
}
.CodeMirror-hint-active {
  background: var(--accent, #89b4fa) !important;
  color: #1e1e2e !important;
}

/* ===== Collaboration Panel ===== */
.collab-panel {
  position: fixed;
  right: 12px;
  top: 76px;
  width: 340px;
  max-height: calc(100vh - 120px);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 8px 32px rgba(0,0,0,.5);
  z-index: 500;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.collab-panel.hidden { display: none; }
.collab-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  font-weight: 600;
}
.collab-panel-body {
  flex: 1;
  overflow-y: auto;
  padding: 8px 12px;
}
.collab-section {
  margin-bottom: 14px;
}
.collab-section-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 6px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border);
}
.collab-versions-list {
  max-height: 160px;
  overflow-y: auto;
}
.collab-version-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  border-radius: 4px;
  margin-bottom: 4px;
  background: var(--bg-primary);
  border: 1px solid transparent;
  transition: all .15s;
}
.collab-version-item:hover {
  border-color: var(--border);
}
.collab-version-item.active {
  border-color: var(--accent);
  background: rgba(137,180,250,.08);
}
.collab-users-list {
  max-height: 100px;
  overflow-y: auto;
}
.collab-user-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 8px;
  border-radius: 4px;
  margin-bottom: 2px;
  background: var(--bg-primary);
}