/* React Flow styling overrides for the Manuscript theme. */

.diagram-flow {
  width: 100%;
  height: 100%;
  background: var(--diagram-bg);
}

/* Hide the default attribution badge for cleaner aesthetic */
.react-flow__attribution {
  display: none;
}

.react-flow__pane {
  cursor: default;
}

/* Background dots */
.react-flow__background {
  background-color: var(--diagram-bg);
}

/* Connection line drawn while drag-creating an edge */
.react-flow__connection-path {
  stroke: var(--accent);
  stroke-width: 1.5;
  stroke-dasharray: 4 3;
}

/* Selection box */
.react-flow__nodesselection-rect,
.react-flow__selection {
  background: var(--accent-soft);
  border: 1px dashed var(--accent);
}

/* Node base wrapper — we draw our own card; React Flow's outer just provides position. */
.react-flow__node {
  font-family: var(--font-body);
  cursor: grab;
}
.react-flow__node:active { cursor: grabbing; }

/* Custom node card (BlockNode component) */
.sysml-node {
  position: relative;
  background: var(--block-bg);
  border: 1px solid var(--block-border);
  border-radius: 8px;
  box-shadow: 0 2px 4px var(--shadow);
  font-family: var(--font-body);
  user-select: none;
  display: flex; flex-direction: column;
  min-width: 168px;
}
.sysml-node-actor {
  background: var(--block-actor-bg);
}
.sysml-node-constraint {
  background: var(--block-constraint-bg);
  border-style: dashed;
}
.sysml-node-system {
  border-color: var(--accent);
  border-width: 1.5px;
}
.sysml-node-selected,
.react-flow__node.selected .sysml-node {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft), 0 2px 4px var(--shadow);
}
.sysml-node-stereo {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--muted);
  letter-spacing: 0.04em;
  padding: 6px 12px 0 12px;
}
.sysml-node-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 13px;
  color: var(--fg);
  padding: 1px 12px 8px 12px;
}
.sysml-node-divider {
  height: 1px;
  background: var(--block-divider);
}
.sysml-node-props {
  padding: 6px 12px 8px 12px;
  display: flex; flex-direction: column; gap: 3px;
}
.sysml-node-prop {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--muted-strong);
}
.sysml-node-prop-empty {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--muted);
  font-style: italic;
}
.sysml-node-constraint-body {
  padding: 4px 12px 8px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted-strong);
}

/* Connection handles — kept subtle; visible on hover */
.react-flow__handle {
  width: 8px;
  height: 8px;
  background: var(--surface);
  border: 1.25px solid var(--accent);
  opacity: 0;
  transition: opacity 0.15s;
}
.react-flow__node:hover .react-flow__handle,
.react-flow__node.selected .react-flow__handle {
  opacity: 1;
}

/* Edges */
.react-flow__edge-path {
  stroke: var(--edge);
  stroke-width: 1;
}
.react-flow__edge.selected .react-flow__edge-path {
  stroke: var(--accent);
  stroke-width: 1.5;
}
.react-flow__edge-text {
  font-family: var(--font-mono);
  font-size: 10.5px;
  fill: var(--edge-label);
}
.react-flow__edge-textbg {
  fill: var(--diagram-bg);
}

.sysml-edge-label {
  background: var(--diagram-bg);
  border: 0.75px solid var(--edge-soft);
  border-radius: 4px;
  padding: 1px 6px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--edge-label);
  white-space: nowrap;
  pointer-events: all;
}

/* Controls (zoom in/out/fit) — positioned via React Flow's `position` prop */
.react-flow__controls {
  box-shadow: 0 2px 8px var(--shadow);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}
.react-flow__controls-button {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--border);
  color: var(--muted-strong);
  width: 26px;
  height: 26px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.react-flow__controls-button:last-child { border-bottom: none; }
.react-flow__controls-button:hover {
  background: var(--surface-2);
  color: var(--fg);
}
.react-flow__controls-button svg {
  fill: currentColor;
  width: 11px;
  height: 11px;
  max-width: 11px;
  max-height: 11px;
}

/* Palette — drag source for new blocks */
.diagram-palette {
  position: absolute;
  top: 12px;
  left: 12px;
  display: flex; flex-direction: column; gap: 6px;
  z-index: 5;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px;
  box-shadow: 0 2px 8px var(--shadow);
}
.diagram-palette-label {
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--muted);
  letter-spacing: 0.10em;
  text-transform: uppercase;
  padding: 2px 4px 4px 4px;
}
.diagram-palette-item {
  display: flex; align-items: center; gap: 8px;
  padding: 5px 8px;
  border-radius: 4px;
  background: var(--bg);
  border: 1px solid var(--border);
  cursor: grab;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg);
}
.diagram-palette-item:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent-strong);
}
.diagram-palette-item:active { cursor: grabbing; }
.diagram-palette-glyph {
  width: 14px; height: 14px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 11px;
  color: var(--muted);
}

/* Inspector panel for selected node */
.diagram-inspector {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 240px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
  box-shadow: 0 2px 8px var(--shadow);
  z-index: 5;
  display: flex; flex-direction: column; gap: 8px;
  font-family: var(--font-body);
}
.diagram-inspector-row {
  display: flex; flex-direction: column; gap: 3px;
}
.diagram-inspector-label {
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.diagram-inspector-input {
  font-family: inherit;
  font-size: 13px;
  padding: 5px 7px;
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  color: var(--fg);
  outline: none;
}
.diagram-inspector-input:focus { border-color: var(--accent); }
.diagram-inspector-select {
  font-family: var(--font-mono);
  font-size: 11.5px;
  padding: 4px 6px;
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  color: var(--fg);
}
.diagram-inspector-prop {
  display: flex; gap: 4px; align-items: center;
}
.diagram-inspector-prop input {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 11.5px;
  padding: 3px 6px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--fg);
  outline: none;
}
.diagram-inspector-prop input:focus { border-color: var(--accent); }
.diagram-inspector-prop-x {
  width: 18px; height: 18px;
  display: flex; align-items: center; justify-content: center;
  background: transparent;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 13px;
}
.diagram-inspector-prop-x:hover { color: var(--warn-strong); }
.diagram-inspector-add {
  margin-top: 2px;
  padding: 4px 8px;
  background: transparent;
  border: 1px dashed var(--border-strong);
  border-radius: 4px;
  color: var(--muted-strong);
  font-family: var(--font-mono);
  font-size: 10.5px;
  cursor: pointer;
}
.diagram-inspector-add:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent-strong);
}
.diagram-inspector-actions {
  display: flex; gap: 6px; margin-top: 6px;
}
.diagram-inspector-btn {
  flex: 1;
  padding: 5px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 4px;
  cursor: pointer;
  color: var(--fg);
}
.diagram-inspector-btn:hover { background: var(--surface-2); }
.diagram-inspector-btn-danger { color: var(--warn-strong); }
.diagram-inspector-btn-danger:hover { background: var(--warn-soft); }