.sim-title {
  font-family: 'Playfair Display', serif;
  font-weight: 700;
  color: var(--hw-forest);
  margin-bottom: 0.25rem;
}

.gol-rules {
  display: inline-block;
  text-align: left;
  margin: 0;
  padding-left: 1.25rem;
  font-size: 0.85rem;
  color: var(--hw-text-muted);
  line-height: 1.6;
}

.gol-rules li {
  margin-bottom: 0.2rem;
}

.gol-panel {
  background: rgba(255, 255, 255, 0.9);
  border-radius: var(--hw-radius-lg);
  box-shadow: var(--hw-shadow-md);
  border: 1px solid var(--hw-border);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.gol-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn-sim {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-height: 40px;
  padding: 0.5rem 0.9rem;
  border-radius: var(--hw-radius-md);
  border: 1px solid var(--hw-border);
  background: rgba(255, 255, 255, 0.8);
  color: var(--hw-text-primary);
  font-family: 'Nunito', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--hw-transition-fast);
}

.btn-sim:hover {
  transform: translateY(-2px);
  box-shadow: var(--hw-shadow-sm);
  border-color: var(--hw-sage);
}

.btn-sim:active {
  transform: translateY(0);
}

.btn-sim-primary {
  background: var(--hw-gradient-sage);
  color: white;
  border-color: transparent;
}

.btn-sim-primary:hover {
  color: white;
  border-color: transparent;
  box-shadow: var(--hw-shadow-glow);
}

.btn-sim-ghost {
  background: transparent;
}

.gol-speed {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-height: 40px;
}

.gol-speed-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--hw-text-secondary);
  font-weight: 600;
  white-space: nowrap;
  margin: 0;
}

.gol-speed input[type="range"] {
  width: 140px;
  accent-color: var(--hw-sage);
  cursor: pointer;
}

.gol-canvas-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: var(--hw-bg-primary);
  border-radius: var(--hw-radius-md);
  border: 1px solid var(--hw-border);
  overflow: hidden;
  touch-action: none;
}

#gol-canvas,
#astar-canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: crosshair;
}

.gol-status {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--hw-text-secondary);
  font-family: 'SF Mono', ui-monospace, monospace;
}

.gol-status span {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.astar-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  font-size: 0.8rem;
  color: var(--hw-text-secondary);
  font-weight: 600;
}

.astar-legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.astar-swatch {
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 3px;
  border: 1px solid var(--hw-border);
}

.astar-swatch-start { background: #6B8E5A; }
.astar-swatch-goal { background: #E07A5F; }
.astar-swatch-open { background: #A8C686; }
.astar-swatch-closed { background: rgba(135, 168, 120, 0.35); }
.astar-swatch-path { background: #E9C46A; }
.astar-swatch-wall { background: #2D4A3E; }

.astar-explainer {
  margin-top: 1.25rem;
  background: rgba(255, 255, 255, 0.9);
  border-radius: var(--hw-radius-lg);
  box-shadow: var(--hw-shadow-md);
  border: 1px solid var(--hw-border);
  padding: 1.25rem 1.5rem;
  color: var(--hw-text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.astar-explainer p {
  margin-bottom: 0.75rem;
}

.astar-explainer-title {
  font-family: 'Playfair Display', serif;
  font-weight: 700;
  color: var(--hw-forest);
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}

.astar-explainer-list {
  margin-bottom: 0.75rem;
  padding-left: 1.25rem;
}

.astar-explainer-list li {
  margin-bottom: 0.4rem;
}

.astar-explainer strong {
  color: var(--hw-forest);
  font-family: 'SF Mono', ui-monospace, monospace;
}

.astar-path-text {
  color: var(--hw-gold);
}

@media (max-width: 768px) {
  .gol-toolbar {
    justify-content: center;
  }
  .astar-legend {
    justify-content: center;
  }
  .astar-explainer {
    padding: 1rem 1.1rem;
    font-size: 0.9rem;
  }
  .gol-speed input[type="range"] {
    width: 100px;
  }
  .btn-sim span {
    display: none;
  }
  .btn-sim {
    padding: 0.5rem 0.7rem;
    min-width: 40px;
    justify-content: center;
  }
  .gol-canvas-wrap {
    aspect-ratio: 1 / 1;
  }
}