.flow-canvas-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  border: 1px solid #334155;
  border-radius: 12px;
  background: #0f172a;
  overflow: hidden;
}
.flow-canvas-wrap.flow-canvas-fullscreen {
  position: fixed;
  inset: 0;
  z-index: 200;
  border-radius: 0;
}
.flow-canvas-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.75rem;
  background: #1e293b;
  border-bottom: 1px solid #334155;
}
.flow-canvas-palette {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}
.flow-palette-btn {
  font-size: 0.65rem;
  padding: 0.25rem 0.5rem;
  border-radius: 6px;
  border: 1px solid color-mix(in srgb, var(--block-color) 50%, #334155);
  background: color-mix(in srgb, var(--block-color) 15%, #0f172a);
  color: #e2e8f0;
  cursor: pointer;
}
.flow-palette-btn:hover { filter: brightness(1.15); }
.flow-canvas-tools { display: flex; gap: 0.35rem; flex-wrap: wrap; }
.flow-canvas-tools button {
  padding: 0.3rem 0.55rem;
  border-radius: 6px;
  border: 1px solid #475569;
  background: #334155;
  color: #f1f5f9;
  font-size: 0.75rem;
  cursor: pointer;
}
.flow-canvas-body {
  display: grid;
  grid-template-columns: 1fr 220px;
  min-height: 420px;
}
.flow-canvas-fullscreen .flow-canvas-body { min-height: calc(100vh - 200px); }
.flow-canvas-props {
  border-left: 1px solid #334155;
  background: #1e293b;
  padding: 0.75rem;
  overflow-y: auto;
}
.flow-canvas-props input,
.flow-canvas-props textarea {
  font-size: 0.7rem;
  color: #e2e8f0;
}
.flow-canvas-stage {
  position: relative;
  height: 420px;
  overflow: hidden;
  background: repeating-linear-gradient(0deg, transparent, transparent 19px, #1e293b33 19px, #1e293b33 20px),
    repeating-linear-gradient(90deg, transparent, transparent 19px, #1e293b33 19px, #1e293b33 20px);
  background-color: #0b1220;
  cursor: grab;
}
.flow-canvas-fullscreen .flow-canvas-stage { height: calc(100vh - 200px); }
.flow-canvas-edges {
  position: absolute;
  inset: 0;
  pointer-events: none;
  transform-origin: 0 0;
}
.flow-edge-path {
  fill: none;
  stroke: #6366f1;
  stroke-width: 2;
  opacity: 0.8;
}
.flow-edge-label {
  fill: #94a3b8;
  font-size: 10px;
  text-anchor: middle;
}
.flow-canvas-nodes {
  position: absolute;
  inset: 0;
  transform-origin: 0 0;
}
.flow-node {
  position: absolute;
  width: 180px;
  min-height: 56px;
  padding: 0.5rem 0.65rem;
  border-radius: 10px;
  border: 2px solid var(--node-color, #6366f1);
  background: linear-gradient(145deg, #1e293b, #0f172a);
  box-shadow: 0 4px 14px rgba(0,0,0,.35);
  cursor: move;
  user-select: none;
}
.flow-node-selected {
  box-shadow: 0 0 0 2px #fff, 0 4px 20px rgba(99,102,241,.5);
}
.flow-node-icon { font-size: 1rem; margin-right: 0.25rem; }
.flow-node-label { display: block; font-weight: 600; font-size: 0.75rem; color: #f1f5f9; }
.flow-node-type { font-size: 0.6rem; color: #94a3b8; text-transform: uppercase; }
.flow-canvas-ai {
  margin: 0;
  border-radius: 0;
  border-top: 1px solid #334155;
}
.flow-context-menu {
  position: fixed;
  z-index: 300;
  min-width: 140px;
  background: #1e293b;
  border: 1px solid #475569;
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,.5);
  padding: 0.25rem;
}
.flow-context-menu button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 0.4rem 0.6rem;
  font-size: 0.75rem;
  background: none;
  border: none;
  color: #e2e8f0;
  cursor: pointer;
  border-radius: 4px;
}
.flow-context-menu button:hover { background: #334155; }
.flow-context-menu.hidden { display: none; }