/* Circuit Simulator Styles */
.simulator {
  position: relative;
  width: 100%;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.simulator__workspace {
  flex: 1;
  position: relative;
  background:
    radial-gradient(circle, #E8E8E8 1px, transparent 1px);
  background-size: 20px 20px;
  border-radius: var(--radius-lg);
  border: 3px solid #E0E0E0;
  overflow: hidden;
  min-height: 400px;
  touch-action: none;
}

.simulator__svg {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}

/* Component Toolbar */
.sim-toolbar {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-md);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  margin-bottom: var(--space-md);
  flex-wrap: wrap;
  align-items: center;
}

.sim-toolbar__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  cursor: grab;
  transition: background var(--transition-fast), transform var(--transition-fast);
  user-select: none;
  min-width: 80px;
  border: 2px solid transparent;
}

.sim-toolbar__item:hover {
  background: #F0F4FF;
  transform: scale(1.05);
}

.sim-toolbar__item:active {
  cursor: grabbing;
  transform: scale(0.95);
}

.sim-toolbar__item.selected {
  background: #D0E0FF;
  border: 2px solid var(--color-primary);
}

.sim-toolbar__icon {
  width: 56px;
  height: 56px;
}

.sim-toolbar__label {
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-align: center;
}

.sim-toolbar__divider {
  width: 2px;
  height: 48px;
  background: #E0E0E0;
  margin: 0 var(--space-xs);
}

.sim-toolbar__actions {
  display: flex;
  gap: var(--space-sm);
  margin-left: auto;
}

/* Circuit Components SVG Styles */
.circuit-component {
  cursor: grab;
  transition: filter var(--transition-fast);
}

.circuit-component:hover {
  filter: brightness(1.1);
}

.circuit-component.dragging {
  cursor: grabbing;
  opacity: 0.8;
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.3));
}

.circuit-component.selected {
  filter: drop-shadow(0 0 8px rgba(74, 144, 217, 0.6));
}

/* Terminal connection points — big and kid-friendly */
.terminal {
  cursor: crosshair;
  transition: r var(--transition-fast);
}

.terminal:hover {
  r: 16;
  filter: brightness(1.3);
}

.terminal.connected {
  fill: var(--color-success);
}

.terminal.highlight {
  fill: var(--color-accent);
  r: 13;
  animation: terminalPulse 1.2s ease-in-out infinite;
}

@keyframes terminalPulse {
  0%, 100% { r: 13; opacity: 1; }
  50% { r: 16; opacity: 0.7; }
}

/* Wires — thicker and more visible */
.wire {
  fill: none;
  stroke: #333;
  stroke-width: 5;
  stroke-linecap: round;
  stroke-linejoin: round;
  cursor: pointer;
  transition: stroke var(--transition-fast);
}

.wire:hover {
  stroke: var(--color-primary);
  stroke-width: 7;
}

.wire.active {
  stroke: var(--color-accent);
  stroke-width: 5;
  stroke-dasharray: 10 5;
  animation: currentFlow 0.6s linear infinite;
}

.wire.provisional {
  stroke: var(--color-primary);
  stroke-width: 4;
  stroke-dasharray: 6 4;
  opacity: 0.7;
}

@keyframes currentFlow {
  to { stroke-dashoffset: -12; }
}

/* LED Glow */
.led-glow {
  transition: opacity var(--transition-normal);
  opacity: 0;
}

.led-glow.lit {
  opacity: 1;
  animation: ledPulse 2s ease-in-out infinite;
}

@keyframes ledPulse {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 1; }
}

/* Current flow dots */
.current-dot {
  fill: var(--color-accent);
  animation: flowDot 1.5s linear infinite;
}

@keyframes flowDot {
  from { offset-distance: 0%; }
  to { offset-distance: 100%; }
}

/* Switch animation */
.switch-lever {
  transition: transform var(--transition-normal);
  transform-origin: center left;
  cursor: pointer;
}

.switch-lever.closed {
  transform: rotate(0deg);
}

.switch-lever.open {
  transform: rotate(-30deg);
}

/* Objective panel */
.sim-objective {
  background: linear-gradient(135deg, #4A90D9, #6C5CE7);
  color: white;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.sim-objective__icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.sim-objective__text {
  font-size: var(--font-size-md);
  font-weight: 700;
}

/* Hint button */
.hint-btn {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  z-index: var(--z-mascot);
}

/* Component delete zone */
.delete-zone {
  position: absolute;
  bottom: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-md) var(--space-xl);
  background: rgba(244, 67, 54, 0.1);
  border: 3px dashed var(--color-danger);
  border-radius: var(--radius-lg);
  color: var(--color-danger);
  font-weight: 700;
  opacity: 0;
  transition: opacity var(--transition-fast);
  pointer-events: none;
}

.delete-zone.visible {
  opacity: 1;
  pointer-events: auto;
}

/* Timer */
.sim-timer {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-lg);
  font-weight: 900;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.sim-timer.warning {
  color: var(--color-danger);
  animation: pulse 0.5s ease-in-out infinite;
}