/* 96-well plate demo widget (1ch vs 8ch well 지정 시각화) */
.plate-demo {
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: .6rem;
  padding: 1rem 1.1rem 1.2rem;
  margin: 1rem 0;
}
.plate-demo__controls {
  display: flex;
  align-items: center;
  gap: .5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.plate-demo__controls button {
  border: 1px solid var(--md-primary-fg-color);
  background: transparent;
  color: var(--md-primary-fg-color);
  padding: .32rem .85rem;
  border-radius: 999px;
  cursor: pointer;
  font-size: .78rem;
  font-weight: 600;
  transition: background .15s, color .15s;
}
.plate-demo__controls button.is-active {
  background: var(--md-primary-fg-color);
  color: var(--md-primary-bg-color, #fff);
}
.plate-demo__hint {
  font-size: .76rem;
  color: var(--md-default-fg-color--light);
  margin-left: auto;
}
.plate-demo__label { color: var(--md-primary-fg-color); font-weight: 700; }

.plate-demo__plate {
  display: grid;
  grid-template-columns: 1.3rem repeat(12, 1fr);
  gap: .28rem;
  max-width: 560px;
}
.plate-demo__hd {
  font-size: .6rem;
  text-align: center;
  color: var(--md-default-fg-color--light);
  align-self: center;
}
.plate-demo__well {
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  border: 1.5px solid var(--md-default-fg-color--lightest);
  background: var(--md-default-bg-color);
  cursor: pointer;
  transition: background .15s, border-color .15s, transform .15s;
}
.plate-demo__well:hover { border-color: var(--md-primary-fg-color); }
.plate-demo__well.is-on {
  background: var(--md-primary-fg-color);
  border-color: var(--md-primary-fg-color);
  animation: plate-pulse 1.15s ease-in-out infinite;
}
@keyframes plate-pulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.22); }
}
@media (prefers-reduced-motion: reduce) {
  .plate-demo__well.is-on { animation: none; }
}