body {
  margin:0;
  font-family:'Roboto',sans-serif;
  background:#f5f5f5;
  color:#333;
}
#editor {
  display:grid;
  grid-template-columns:220px 1fr 400px;
  grid-template-rows:1fr;
  height:100vh;
  gap:8px;
  padding:8px;
}
#nodes-panel {
  background:#ffffff;
  border-radius:12px;
  padding:10px;
  box-shadow:0 2px 4px rgba(0,0,0,0.2);
  overflow-y:auto;
}
.node-tool {
  padding:8px;
  margin:6px 0;
  background:#e0e0e0;
  border-radius:8px;
  cursor:grab;
  transition:background 0.2s, transform 0.2s;
}
.node-tool:hover { background:#d1c4e9; transform:scale(1.05); }
#node-canvas {
  background:#ffffff;
  border-radius:12px;
  box-shadow:0 2px 4px rgba(0,0,0,0.2);
  position:relative;
}
#preview-panel {
  background:#ffffff;
  border-radius:12px;
  box-shadow:0 2px 4px rgba(0,0,0,0.2);
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  padding:10px;
}
#preview-panel video {
  max-width:100%;
  border-radius:10px;
  margin-bottom:10px;
}
#overlay-canvas {
  width:100%;
  height:200px;
  border:1px solid #ccc;
  border-radius:8px;
}