:root {
  --bg-0: #0d0d10;
  --bg-1: #111114;
  --bg-2: #16161b;
  --bg-3: #1c1c23;
  --bg-4: #24242c;
  --bg-5: #2e2e38;
  --border-0: #1c1c24;
  --border-1: #262630;
  --border-2: #33333f;
  --border-3: #454554;
  --text-0: #e8e8f0;
  --text-1: #c4c4d0;
  --text-2: #8888a0;
  --text-3: #5c5c70;
  --accent: #7a9ec4;
  --accent-dim: #4d7a9e;
  --accent-glow: rgba(122,158,196,0.2);
  --exec: #e8e8f0;
  --exec-dim: #b0b0c0;
  --exec-glow: rgba(232,232,240,0.15);
  --data: #a070d4;
  --data-dim: #7a50b0;
  --data-glow: rgba(160,112,212,0.18);
  --success: #3ab795;
  --danger: #d95050;
  --warning: #d4a030;
  --titlebar-h: 34px;
  --statusbar-h: 22px;
  --sidebar-w: 240px;
  --rightpanel-w: 270px;
  --codepanel-h: 170px;
  --radius: 6px;
  --radius-sm: 3px;
  --shadow-node: 0 2px 12px rgba(0,0,0,0.45), 0 1px 3px rgba(0,0,0,0.3);
  --shadow-node-hover: 0 8px 28px rgba(0,0,0,0.35), 0 4px 12px rgba(0,0,0,0.25);
  --shadow-node-selected: 0 0 0 1.5px var(--accent), 0 0 28px var(--accent-glow), 0 8px 28px rgba(0,0,0,0.35);
  --shadow-elevated: 0 12px 40px rgba(0,0,0,0.45), 0 4px 12px rgba(0,0,0,0.3);
  --transition-fast: 0.12s ease;
  --transition-med: 0.2s ease;
  --transition-slow: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  --cat-players: #4CAF50;
  --cat-combat: #e74c3c;
  --cat-data: #3498db;
  --cat-ui: #f39c12;
  --cat-inventory: #9b59b6;
  --cat-npc: #e91e63;
  --cat-world: #1abc9c;
  --cat-logic: #607d8b;
  --cat-services: #8d6e63;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-0);
  color: var(--text-1);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
  user-select: none;
  -webkit-user-select: none;
  -webkit-font-smoothing: antialiased;
}

#app { display: flex; flex-direction: column; height: 100vh; }

#titlebar {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--titlebar-h); padding: 0 6px;
  background: var(--bg-1);
  border-bottom: 1px solid var(--border-0);
  flex-shrink: 0; z-index: 100;
}
.titlebar-left { display: flex; align-items: center; gap: 0; min-width: 0; }
.title { font-weight: 600; font-size: 12px; color: var(--text-0); letter-spacing: -0.1px; }

.titlebar-center { display: flex; align-items: center; gap: 1px; }
.tb-btn {
  background: none; border: 1px solid transparent; color: var(--text-2);
  padding: 4px 6px; border-radius: var(--radius-sm); cursor: pointer;
  font-size: 11px; font-family: inherit; display: flex; align-items: center;
  gap: 4px; transition: all var(--transition-fast); line-height: 1;
}
.tb-btn:hover { background: var(--bg-4); color: var(--text-0); border-color: var(--border-2); }
.tb-btn.active { background: var(--accent-glow); color: var(--accent); border-color: var(--accent-dim); }
.tb-btn svg { width: 13px; height: 13px; }
.tb-sep { width: 1px; height: 16px; background: var(--border-1); margin: 0 3px; }
.tb-select {
  background: var(--bg-3); border: 1px solid var(--border-2); border-radius: var(--radius-sm);
  color: var(--text-1); padding: 2px 5px; font-size: 10px; font-family: inherit;
  cursor: pointer; outline: none; transition: border-color var(--transition-fast);
}
.tb-select:hover { border-color: var(--accent-dim); color: var(--text-0); }
.titlebar-right { display: flex; align-items: center; gap: 3px; }

#workspace { display: flex; flex-direction: column; flex: 1; overflow: hidden; position: relative; }
#workspace-body { display: flex; flex: 1; overflow: hidden; }

#sidebar {
  width: var(--sidebar-w); min-width: var(--sidebar-w);
  background: var(--bg-1); border-right: 1px solid var(--border-0);
  display: flex; flex-direction: column; overflow: hidden;
  position: relative;
}
.sidebar-tabs { display: flex; flex-shrink: 0; background: var(--bg-0); border-bottom: 1px solid var(--border-0); }
.st-tab {
  flex: 1; padding: 7px 8px; background: none; border: none;
  color: var(--text-3); font-size: 10px; font-weight: 600; cursor: pointer;
  font-family: inherit; transition: all var(--transition-fast); position: relative;
  text-transform: uppercase; letter-spacing: 0.4px;
}
.st-tab:hover { color: var(--text-1); background: var(--bg-2); }
.st-tab.active { color: var(--accent); background: var(--bg-1); }
.st-tab.active::after {
  content: ''; position: absolute; bottom: 0; left: 4px; right: 4px;
  height: 2px; background: var(--accent);
  border-radius: 2px 2px 0 0;
}
.sidebar-panel { display: none; flex: 1; overflow-y: auto; overflow-x: hidden; }
.sidebar-panel.active { display: flex; flex-direction: column; }

.search-box, .systems-toolbar {
  padding: 5px 8px; display: flex; align-items: center;
  gap: 4px; flex-shrink: 0; border-bottom: 1px solid var(--border-0);
}
.search-box svg { color: var(--text-3); flex-shrink: 0; width: 12px; height: 12px; }
.search-box input, .systems-toolbar input {
  flex: 1; background: var(--bg-3); border: 1px solid var(--border-1);
  border-radius: var(--radius-sm); padding: 3px 6px; color: var(--text-0);
  font-size: 10px; font-family: inherit; outline: none; transition: all var(--transition-fast);
}
.search-box input::placeholder, .systems-toolbar input::placeholder { color: var(--text-3); }
.search-box input:focus, .systems-toolbar input:focus { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent-glow); }

.block-category { border-bottom: 1px solid var(--border-0); }
.cat-header {
  display: flex; align-items: center; gap: 5px; padding: 5px 10px;
  cursor: pointer; font-size: 9px; font-weight: 700; transition: all var(--transition-fast);
  color: var(--text-2); letter-spacing: 0.3px;
  position: relative; text-transform: uppercase;
}
.cat-header::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: transparent; transition: background var(--transition-fast);
}
.cat-header:hover { background: var(--bg-3); color: var(--text-0); }
.cat-header:hover::before { background: var(--accent-dim); }
.cat-toggle { font-size: 7px; color: var(--text-3); transition: transform var(--transition-med); width: 8px; flex-shrink: 0; }
.cat-header.collapsed .cat-toggle { transform: rotate(-90deg); }
.cat-dot { width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; box-shadow: 0 0 4px currentColor; }
.cat-name { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cat-blocks {
  display: flex; flex-direction: column; padding: 1px 4px 5px; gap: 1px;
  overflow: hidden; transition: max-height var(--transition-slow);
}
.cat-header.collapsed + .cat-blocks { display: none; }
.block-item {
  display: flex; align-items: center; gap: 5px; padding: 3px 6px 3px 5px;
  border-radius: var(--radius-sm); cursor: grab; font-size: 10px;
  transition: all var(--transition-fast); border: 1px solid transparent; color: var(--text-2);
  position: relative;
  min-height: 24px;
}
.block-item:hover {
  background: var(--bg-4); border-color: var(--border-2); color: var(--text-0);
}
.block-item:active { cursor: grabbing; transform: scale(0.97); }
.block-item .block-accent {
  width: 3px; height: 14px; border-radius: 2px; flex-shrink: 0;
  transition: all var(--transition-fast);
}
.block-item:hover .block-accent { transform: scaleY(1.1); }
.block-item .block-icon-circle {
  width: 16px; height: 16px; border-radius: 3px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 8px; font-weight: 700; transition: all var(--transition-fast);
}
.block-item:hover .block-icon-circle { transform: scale(1.08); }
.block-item .block-label {
  flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-weight: 500;
  min-width: 0;
}
.block-item .block-type-badge {
  font-size: 7px; width: 13px; height: 11px; border-radius: 2px;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  opacity: 0.35; transition: opacity var(--transition-fast);
}
.block-item:hover .block-type-badge { opacity: 0.7; }
.block-item .block-type-badge.event { background: var(--exec); color: var(--bg-0); }
.block-item .block-type-badge.action { background: var(--data); color: #fff; }
.block-item .block-desc { display: none; }
.block-item.dragging { opacity: 0.35; transform: scale(0.93); }

.drag-ghost-block {
  padding: 4px 10px; border-radius: var(--radius-sm);
  background: var(--bg-3); border: 1px solid var(--accent-dim);
  box-shadow: var(--shadow-elevated); display: flex; align-items: center;
  gap: 5px; font-size: 10px; font-weight: 500; color: var(--text-0);
  pointer-events: none; transform: rotate(-1deg);
}

#canvas-area { flex: 1; position: relative; overflow: hidden; background: var(--bg-0); }
#canvas-area::before {
  content: ''; position: absolute; inset: 0; pointer-events: none; z-index: 0;
  background:
    linear-gradient(rgba(30,30,40,0.4) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30,30,40,0.4) 1px, transparent 1px);
  background-size: 80px 80px;
}
#canvas-area::after {
  content: ''; position: absolute; inset: 0; pointer-events: none; z-index: 0;
  background: radial-gradient(ellipse at 50% 30%, transparent 35%, rgba(0,0,0,0.45) 100%);
}
#canvas-area.grid-dots {
  background-image: radial-gradient(circle, rgba(60,60,80,0.5) 1px, transparent 1px);
  background-size: 20px 20px;
}
#canvas-area.grid-lines {
  background-image:
    linear-gradient(rgba(30,30,40,0.3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30,30,40,0.3) 1px, transparent 1px);
  background-size: 20px 20px;
}
#graph-canvas { width: 100%; height: 100%; position: relative; overflow: hidden; }
#canvas-transform { position: absolute; top: 0; left: 0; width: 100%; height: 100%; transform-origin: 0 0; z-index: 1; }
#connections-svg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; z-index: 1; }
#graph-nodes { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 2; }
#graph-empty { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); text-align: center; z-index: 0; pointer-events: none; }
#graph-empty .empty-icon { font-size: 42px; font-weight: 200; color: var(--bg-5); margin-bottom: 10px; opacity: 0.4; }
#graph-empty .empty-title { font-size: 16px; font-weight: 600; color: var(--text-2); margin-bottom: 5px; letter-spacing: -0.1px; }
#graph-empty .empty-sub { font-size: 11px; color: var(--text-3); max-width: 360px; margin: 0 auto 18px; line-height: 1.5; }
#graph-empty .empty-sub kbd {
  background: var(--bg-4); border: 1px solid var(--border-2); border-radius: 3px;
  padding: 1px 4px; font-size: 10px; font-family: 'Inter', sans-serif; color: var(--text-2); font-weight: 500;
}
#graph-empty .empty-examples { display: flex; flex-direction: column; gap: 4px; align-items: center; pointer-events: auto; }
.empty-example {
  background: var(--bg-2); border: 1px solid var(--border-1); border-radius: var(--radius);
  padding: 7px 12px; width: 300px; cursor: pointer; text-align: left;
  transition: all var(--transition-fast);
}
.empty-example:hover {
  border-color: var(--accent-dim); background: var(--bg-3);
  box-shadow: 0 0 16px var(--accent-glow);
  transform: translateY(-1px);
}
.empty-example strong { display: block; font-size: 11px; margin-bottom: 2px; color: var(--text-0); font-weight: 600; }
.empty-example span { font-size: 10px; color: var(--text-3); }

.graph-node {
  position: absolute;
  background: var(--bg-2);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  min-width: 180px;
  box-shadow: var(--shadow-node);
  z-index: 10;
  transition: box-shadow var(--transition-med), border-color var(--transition-med), transform var(--transition-fast);
  font-size: 11px;
  overflow: visible;
}
.graph-node::after {
  content: '';
  position: absolute;
  top: -1px; left: -1px; right: -1px;
  height: 3px;
  background: var(--node-color, #5a6a78);
  border-radius: var(--radius) var(--radius) 0 0;
  opacity: 0.8;
}
.graph-node:hover {
  box-shadow: var(--shadow-node-hover), inset 0 1px 0 rgba(255,255,255,0.04);
  border-color: var(--border-3);
}
.graph-node:hover::after { opacity: 1; }
.graph-node.selected {
  border-color: var(--accent);
  box-shadow: var(--shadow-node-selected);
}
.graph-node.multi-selected {
  border-color: color-mix(in srgb, var(--accent) 50%, transparent);
  box-shadow: 0 0 0 1px var(--accent-glow), var(--shadow-node);
}
.graph-node.dragging { opacity: 0.85; z-index: 100; transition: none; transform: scale(1.02); }
.graph-node.connecting-target { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-glow), var(--shadow-node); }

.node-header {
  display: flex; align-items: center; gap: 6px;
  padding: 7px 10px;
  font-size: 11px; font-weight: 600; cursor: grab;
  color: #fff;
  background: linear-gradient(135deg, var(--node-color, #5a6a78), color-mix(in srgb, var(--node-color, #5a6a78) 75%, #000));
  position: relative;
  letter-spacing: -0.1px;
  text-shadow: 0 1px 2px rgba(0,0,0,0.4);
}
.node-header:active { cursor: grabbing; }
.node-header .node-icon { width: 2px; height: 16px; border-radius: 2px; flex-shrink: 0; background: rgba(255,255,255,0.3); }
.node-header .node-name { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; position: relative; z-index: 1; }
.node-header .node-remove {
  width: 15px; height: 15px; display: flex; align-items: center; justify-content: center;
  border-radius: 3px; cursor: pointer; color: rgba(255,255,255,0.3); font-size: 10px;
  line-height: 1; transition: all var(--transition-fast); position: relative; z-index: 1; opacity: 0;
}
.graph-node:hover .node-header .node-remove { opacity: 1; }
.node-header .node-remove:hover { background: rgba(239,68,68,0.4); color: #fff; }

.node-body {
  padding: 6px 10px 10px;
  display: flex; flex-direction: column; gap: 4px;
  background: var(--bg-2);
}

.node-socket-row {
  display: flex; align-items: center; gap: 6px; min-height: 22px; font-size: 10px;
  padding: 1px 0;
}
.node-socket-row.input-row { justify-content: flex-start; }
.node-socket-row.output-row { justify-content: flex-end; }
.node-socket-row.data-left { justify-content: flex-start; }
.node-socket-row.data-right { justify-content: flex-end; }

.socket {
  width: 13px; height: 13px; border-radius: 50%; border: 2px solid;
  cursor: crosshair; position: relative; flex-shrink: 0;
  transition: all var(--transition-fast); z-index: 5;
}
.socket.exec { border-color: var(--exec-dim); background: var(--bg-3); }
.socket.exec.connected { background: var(--exec); border-color: var(--exec); box-shadow: 0 0 8px var(--exec-glow); }
.socket.data { border-color: var(--data-dim); background: var(--bg-3); }
.socket.data.connected { background: var(--data); border-color: var(--data); box-shadow: 0 0 8px var(--data-glow); }
.socket:hover { transform: scale(1.6); filter: brightness(1.3); z-index: 10; }
.socket.connecting-source { transform: scale(1.4); box-shadow: 0 0 16px var(--exec-glow); }

.socket-label { color: var(--text-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 110px; font-size: 10px; }
.socket-label.bold { color: var(--text-0); font-weight: 500; }

.socket-badge {
  display: inline-flex; align-items: center; justify-content: center;
  width: 15px; height: 15px; border-radius: 2px; font-size: 7px; font-weight: 700;
  flex-shrink: 0; line-height: 1;
}
.socket-badge.exec { background: var(--exec); color: var(--bg-0); }
.socket-badge.data-s { background: #38bdf8; color: #000; }
.socket-badge.data-n { background: #4ade80; color: #000; }
.socket-badge.data-b { background: #fbbf24; color: #000; }
.socket-badge.data-p { background: #c084fc; color: #000; }
.socket-badge.data-v { background: #22d3ee; color: #000; }
.socket-badge.data-i { background: #94a3b8; color: #000; }
.socket-badge.data-t { background: #c2956a; color: #000; }
.socket-badge.data-a { background: #f472b6; color: #000; }
.socket-badge.data-u { background: #2dd4bf; color: #000; }
.socket-badge.data-f { background: #fb923c; color: #000; }
.socket-badge.data-k { background: #e11d48; color: #fff; }

.socket.highlight-valid {
  box-shadow: 0 0 0 4px var(--success); animation: socketPulse 1s ease-in-out infinite;
}
.socket.highlight-invalid { box-shadow: 0 0 0 3px rgba(239,68,68,0.3); opacity: 0.4; }
.socket.snap-target { transform: scale(1.5); box-shadow: 0 0 16px rgba(58,183,149,0.5), 0 0 4px var(--success); border-color: var(--success); background: var(--success); }
.socket.compatible-target { box-shadow: 0 0 0 4px var(--accent-glow), 0 0 14px var(--accent-glow); border-color: var(--accent); animation: compatibleGlow 1.4s ease-in-out infinite; }
@keyframes compatibleGlow { 0%, 100% { box-shadow: 0 0 0 4px var(--accent-glow), 0 0 10px var(--accent-glow); } 50% { box-shadow: 0 0 0 6px var(--accent-glow), 0 0 20px var(--accent-glow); } }
@keyframes socketPulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(58,183,149,0.15); }
  50% { box-shadow: 0 0 0 7px rgba(58,183,149,0.3); }
}

.node-config {
  padding: 6px 10px 8px;
  border-top: 1px solid var(--border-1);
  display: flex; flex-direction: column; gap: 5px;
  background: rgba(0,0,0,0.08);
}
.config-field { display: flex; align-items: center; gap: 5px; }
.config-field label { font-size: 9px; color: var(--text-2); min-width: 50px; flex-shrink: 0; font-weight: 500; }
.config-field input, .config-field select {
  flex: 1; background: var(--bg-1); border: 1px solid var(--border-2); border-radius: 3px;
  padding: 2px 5px; color: var(--text-0); font-size: 10px; font-family: inherit; outline: none;
  transition: border-color var(--transition-fast);
}
.config-field input:focus, .config-field select:focus { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent-glow); }
.config-field input[type="checkbox"] { flex: none; width: 12px; height: 12px; accent-color: var(--accent); }

#context-menu {
  display: none; position: fixed; background: var(--bg-3); border: 1px solid var(--border-2);
  border-radius: var(--radius); padding: 3px; min-width: 150px;
  box-shadow: var(--shadow-elevated); z-index: 1000;
}
#context-menu.show { display: block; }
.ctx-item {
  display: flex; align-items: center; gap: 7px; padding: 5px 9px;
  border-radius: var(--radius-sm); font-size: 10px; cursor: pointer;
  transition: all var(--transition-fast); color: var(--text-1);
}
.ctx-item:hover { background: var(--bg-5); color: var(--text-0); }
.ctx-item svg { color: var(--text-3); flex-shrink: 0; width: 13px; height: 13px; }
.ctx-item[data-action="delete"]:hover { color: var(--danger); }
.ctx-item[data-action="delete"]:hover svg { color: var(--danger); }
.ctx-sep { height: 1px; background: var(--border-1); margin: 2px 0; }

.panel-resize-handle {
  height: 4px; cursor: ns-resize; background: transparent; flex-shrink: 0;
  position: relative; z-index: 10; transition: background var(--transition-fast);
}
.panel-resize-handle:hover, .panel-resize-handle.active { background: var(--accent); opacity: 0.4; }

#code-panel.bottom-panel {
  height: var(--codepanel-h); min-height: 70px;
  background: var(--bg-1); border-top: 1px solid var(--border-0);
  display: flex; flex-direction: column; overflow: hidden;
  flex-shrink: 0; position: relative;
}
#code-panel.bottom-panel .code-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 3px 10px; border-bottom: 1px solid var(--border-0);
  flex-shrink: 0; background: var(--bg-0);
  min-height: 26px;
}
.code-header-left, .code-header-right { display: flex; align-items: center; gap: 5px; }
.code-title {
  display: flex; align-items: center; gap: 4px;
  font-size: 10px; font-weight: 600; color: var(--text-2);
  letter-spacing: 0.2px;
}
.code-title svg { color: var(--accent); width: 11px; height: 11px; }
.code-actions { display: flex; gap: 2px; }
.code-btn {
  display: flex; align-items: center; gap: 3px; padding: 2px 7px;
  background: var(--bg-3); border: 1px solid var(--border-2); border-radius: var(--radius-sm);
  color: var(--text-2); font-size: 10px; font-family: inherit; cursor: pointer;
  transition: all var(--transition-fast); font-weight: 500;
}
.code-btn:hover { background: var(--bg-5); color: var(--text-0); border-color: var(--border-3); }
#monaco-container { flex: 1; min-height: 0; }

#statusbar {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--statusbar-h); padding: 0 10px;
  background: var(--bg-0); border-top: 1px solid var(--border-0);
  font-size: 10px; color: var(--text-3); flex-shrink: 0;
  letter-spacing: 0.1px;
}
#statusbar .sb-left, #statusbar .sb-right { display: flex; align-items: center; gap: 6px; }
.sb-sep { width: 1px; height: 10px; background: var(--border-1); }
#sb-errors { color: var(--success); }
#sb-errors.has-errors { color: var(--danger); }
#sb-errors.has-warnings { color: var(--warning); cursor: help; }

#right-panels {
  width: var(--rightpanel-w); min-width: var(--rightpanel-w);
  background: var(--bg-1); border-left: 1px solid var(--border-0);
  display: flex; flex-direction: column; overflow: hidden;
  position: relative;
}

#properties-panel {
  background: var(--bg-1); overflow-y: auto; display: flex;
  flex-direction: column; flex: 1;
}
.rp-header {
  padding: 6px 10px; font-size: 9px; font-weight: 700;
  color: var(--text-3); text-transform: uppercase; letter-spacing: 0.6px;
  border-bottom: 1px solid var(--border-0); flex-shrink: 0;
  background: var(--bg-0);
}
#properties-content { padding: 8px 10px; flex: 1; }
.prop-section { margin-bottom: 12px; }
.prop-section-title { font-size: 9px; text-transform: uppercase; color: var(--text-3); letter-spacing: 0.4px; margin-bottom: 5px; font-weight: 600; }
.prop-row { display: flex; justify-content: space-between; padding: 2px 0; font-size: 10px; }
.prop-label { color: var(--text-2); }
.prop-value { color: var(--text-0); text-align: right; max-width: 130px; }
.prop-desc { font-size: 9px; color: var(--text-3); margin-top: 1px; }
.prop-field { margin-bottom: 5px; }
.prop-label-inline { display: block; font-size: 9px; color: var(--text-2); margin-bottom: 1px; }
.prop-input, .prop-select, .prop-textarea {
  width: 100%; background: var(--bg-3); border: 1px solid var(--border-2);
  color: var(--text-0); padding: 3px 7px; border-radius: var(--radius-sm);
  font-size: 10px; font-family: 'JetBrains Mono', monospace;
  transition: border-color var(--transition-fast);
}
.prop-input:focus, .prop-select:focus, .prop-textarea:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 1px var(--accent-glow); }
.prop-select { cursor: pointer; }
.prop-textarea { resize: vertical; min-height: 36px; }
.prop-checkbox { display: flex; align-items: center; gap: 4px; font-size: 10px; cursor: pointer; }
.prop-checkbox input[type="checkbox"] { accent-color: var(--accent); }
.prop-empty { padding: 18px; text-align: center; color: var(--text-3); font-size: 10px; }

#mini-map {
  position: absolute; bottom: 6px; right: 6px;
  width: 150px; height: 100px; background: rgba(16,16,20,0.92);
  border: 1px solid var(--border-2); border-radius: var(--radius-sm);
  z-index: 50; overflow: hidden; opacity: 0.6; cursor: pointer;
  transition: opacity var(--transition-med);
}
#mini-map:hover { opacity: 1; }
#minimap-svg { display: block; }
.minimap-node { cursor: pointer; }
.minimap-viewport { fill: none; stroke: var(--accent); stroke-width: 1.5; stroke-dasharray: 3 2; filter: drop-shadow(0 0 2px var(--accent-glow)); }

.connection-line {
  transition: stroke-width var(--transition-fast), filter var(--transition-fast), opacity var(--transition-fast);
  cursor: pointer;
}
.connection-line.exec { stroke: var(--exec-dim); stroke-width: 2.5; filter: drop-shadow(0 0 4px var(--exec-glow)); }
.connection-line.data { stroke: var(--data); stroke-width: 2; opacity: 0.7; filter: drop-shadow(0 0 3px var(--data-glow)); }
.connection-line:hover { stroke-width: 3.5 !important; opacity: 1; }
.connection-line.animated { stroke-dasharray: 8 4; animation: dashFlow 0.5s linear infinite; }
@keyframes dashFlow { to { stroke-dashoffset: -12; } }
.connection-line.snap-active { stroke: var(--success) !important; stroke-width: 2.5; filter: drop-shadow(0 0 10px rgba(58,183,149,0.5)); }
.connection-line.drag-temp { opacity: 0.8; }

marker#arrowhead polygon { fill: var(--text-2); }
marker#arrowhead-exec polygon { fill: var(--exec); filter: drop-shadow(0 0 2px var(--exec)); }
marker#arrowhead-data polygon { fill: var(--data); filter: drop-shadow(0 0 2px var(--data)); }

.conn-tooltip {
  position: fixed; background: var(--bg-3); border: 1px solid var(--border-2);
  border-radius: var(--radius-sm); padding: 3px 8px; font-size: 10px;
  color: var(--text-0); pointer-events: none; z-index: 1000;
  white-space: nowrap; box-shadow: var(--shadow-elevated);
  font-weight: 500;
}

#selection-rect {
  position: absolute; border: 1px solid color-mix(in srgb, var(--accent) 55%, transparent);
  background: var(--accent-glow); pointer-events: none;
  z-index: 100; display: none; border-radius: 3px;
  box-shadow: 0 0 16px var(--accent-glow), inset 0 0 10px rgba(122,158,196,0.03);
}
.guide-line { position: absolute; pointer-events: none; z-index: 200; stroke: var(--accent); stroke-width: 1; stroke-dasharray: 3 2; }
.temp-connection { pointer-events: none; z-index: 50; }

::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg-5); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-3); }

.system-item {
  padding: 8px 10px; border-bottom: 1px solid var(--border-0);
  cursor: grab; transition: all var(--transition-fast);
  position: relative;
}
.system-item::before {
  content: ''; position: absolute; left: 0; top: 3px; bottom: 3px;
  width: 2px; border-radius: 1px; background: transparent;
  transition: background var(--transition-fast);
}
.system-item:hover { background: var(--bg-3); }
.system-item:hover::before { background: var(--accent-dim); }
.system-item:active { cursor: grabbing; }
.system-item .sys-name { font-size: 11px; font-weight: 600; margin-bottom: 1px; color: var(--text-0); }
.system-item .sys-desc { font-size: 9px; color: var(--text-3); margin-bottom: 3px; line-height: 1.3; }
.system-item .sys-tags { display: flex; gap: 2px; flex-wrap: wrap; }
.system-item .sys-tag {
  font-size: 8px; padding: 1px 5px; border-radius: 2px;
  background: var(--bg-4); color: var(--text-3); font-weight: 500;
}

.drag-ghost {
  position: fixed; pointer-events: none; z-index: 9999;
  padding: 5px 10px; background: var(--bg-3); border: 1px solid var(--accent);
  border-radius: var(--radius-sm); font-size: 10px; font-weight: 500;
  box-shadow: var(--shadow-elevated); opacity: 0.9; color: var(--text-0);
}

#node-search-overlay {
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.6); z-index: 1000;
  display: none; align-items: flex-start; justify-content: center;
  padding-top: 50px;
  backdrop-filter: blur(2px);
}
#node-search-modal {
  background: var(--bg-2);
  border: 1px solid var(--border-2);
  border-radius: var(--radius); width: 500px; max-height: 50vh;
  display: flex; flex-direction: column;
  box-shadow: var(--shadow-elevated), inset 0 1px 0 rgba(255,255,255,0.03);
}
#node-search-input {
  width: 100%; padding: 12px 14px; background: transparent;
  border: none; border-bottom: 1px solid var(--border-1);
  color: var(--text-0); font-size: 14px; outline: none;
  font-family: 'Inter', sans-serif; font-weight: 400;
}
#node-search-input::placeholder { color: var(--text-3); }
#node-search-list { overflow-y: auto; flex: 1; padding: 3px 0; }
.nsr-item {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 14px; cursor: pointer; transition: all var(--transition-fast);
  border-left: 2px solid transparent;
}
.nsr-item:hover, .nsr-item.nsr-selected { background: var(--bg-4); border-left-color: var(--accent); }
.nsr-dot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; box-shadow: 0 0 4px currentColor; }
.nsr-cat {
  font-size: 8px; color: var(--text-3); width: 70px; flex-shrink: 0;
  text-transform: uppercase; letter-spacing: 0.4px; font-weight: 600;
}
.nsr-label { font-size: 11px; color: var(--text-0); flex-shrink: 0; font-weight: 500; }
.nsr-desc { font-size: 9px; color: var(--text-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nsr-empty { padding: 20px; text-align: center; color: var(--text-3); font-size: 11px; }

.graph-group {
  position: absolute; border: 2px solid var(--border-2); border-radius: var(--radius);
  background: rgba(16,16,20,0.25); z-index: 0; pointer-events: auto;
  min-width: 90px; min-height: 50px;
  transition: border-color var(--transition-med), background var(--transition-med);
}
.graph-group:hover { border-color: var(--border-3); background: rgba(16,16,20,0.35); }
.graph-group.collapsed { min-height: 20px; }
.graph-group.collapsed .graph-group { display: none; }
.graph-group[data-depth="1"] { border-color: var(--accent-dim); background: rgba(74,120,158,0.04); }
.graph-group[data-depth="2"] { border-color: #d97706; background: rgba(217,119,6,0.03); }
.graph-group[data-depth="3"] { border-color: #059669; background: rgba(5,150,105,0.03); }
.graph-group[data-depth="4"] { border-color: #7c3aed; background: rgba(124,58,237,0.03); }
.graph-group[data-depth="5"] { border-color: #dc2626; background: rgba(220,38,38,0.03); }
.gg-titlebar {
  display: flex; align-items: center; gap: 5px; padding: 2px 8px;
  border-radius: 5px 5px 0 0; font-size: 10px; font-weight: 600;
  cursor: grab; height: 22px; color: rgba(255,255,255,0.75);
  background: linear-gradient(135deg, var(--node-color, #30363d), color-mix(in srgb, var(--node-color, #30363d) 80%, #000));
}
.gg-collapse { font-size: 7px; cursor: pointer; width: 10px; text-align: center; color: rgba(255,255,255,0.4); transition: transform var(--transition-med); }
.gg-name { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 10px; }
.gg-count {
  font-size: 8px; opacity: 0.7; background: rgba(0,0,0,0.2);
  padding: 0 5px; border-radius: 6px; font-weight: 500;
}

#audio-toggle, #music-toggle {
  display: flex; align-items: center; gap: 3px;
  background: none; border: none; color: var(--text-3); cursor: pointer;
  font-size: 10px; font-family: inherit; padding: 1px 5px;
  border-radius: 2px; transition: all var(--transition-fast);
}
#audio-toggle:hover, #music-toggle:hover { color: var(--text-0); background: var(--bg-4); }
#audio-toggle.muted, #music-toggle:not(.active) { color: var(--text-3); opacity: 0.35; }
#music-toggle.active { color: var(--accent); opacity: 1; text-shadow: 0 0 6px var(--accent-glow); }
#audio-toggle .vol-icon, #music-toggle .vol-icon { font-size: 11px; line-height: 1; }
#audio-toggle .vol-label, #music-toggle .vol-label { font-size: 9px; letter-spacing: 0.2px; }

@media (max-width: 900px) {
  #code-panel { display: none; }
  #right-panels { display: none; }
  #sidebar { width: 180px; min-width: 180px; }
}