.circuit-layout {
  display: flex;
  gap: 1.5rem;
  height: 70vh;
  min-height: 600px;
}

.palette-panel {
  width: 250px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
}

.palette-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  padding: 1rem;
  overflow-y: auto;
}

.palette-item {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.5rem;
  text-align: center;
  cursor: grab;
  user-select: none;
  transition: background-color 0.2s, border-color 0.2s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.palette-item:hover {
  background: var(--surface-3);
  border-color: var(--border-hover);
}

.palette-item svg {
  width: 32px;
  height: 32px;
  pointer-events: none;
}

.editor-area {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.canvas-panel {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.canvas-toolbar {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
}

.canvas-container {
  flex-grow: 1;
  position: relative;
  overflow: hidden;
  background-color: var(--surface-1);
  background-image:
    linear-gradient(to right, var(--border) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border) 1px, transparent 1px);
  background-size: 20px 20px;
}

#circuit-canvas {
  cursor: crosshair;
  outline: none;
}

/* SVG Styles */
.wire {
  stroke: var(--text-2);
  stroke-width: 2;
  fill: none;
  transition: stroke 0.2s;
}

.wire:hover {
  stroke: var(--accent);
  stroke-width: 4;
}

.wire.selected {
  stroke: var(--accent);
}

.component-group {
  cursor: pointer;
}

.component-body {
  stroke: var(--text-1);
  stroke-width: 2;
  fill: var(--surface-1);
}

.component-group.selected .component-body {
  stroke: var(--accent);
}

.component-label {
  fill: var(--text-1);
  font-family: var(--font-mono);
  font-size: 12px;
  user-select: none;
}

.pin {
  fill: var(--surface-2);
  stroke: var(--text-2);
  stroke-width: 1.5;
  cursor: pointer;
  transition: fill 0.2s, stroke 0.2s, r 0.2s;
}

.pin:hover {
  fill: var(--accent);
  stroke: var(--accent);
  r: 5;
}

/* Properties Panel */
.props-panel {
  flex-shrink: 0;
  max-height: 250px;
}

.props-content {
  padding: 1rem;
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}

.prop-field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.prop-field label {
  font-size: 0.875rem;
  color: var(--text-2);
}

.prop-field input {
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-1);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
}

.prop-field input:focus {
  outline: none;
  border-color: var(--accent);
}

.is-hidden {
  display: none !important;
}

/* Simulation Feedback */
.simulation-error {
  color: #ef4444; /* red-500 */
}

.simulation-success {
  color: #10b981; /* emerald-500 */
}

.node-voltage-label {
  fill: var(--accent);
  font-family: var(--font-mono);
  font-size: 10px;
  user-select: none;
  pointer-events: none;
}