.material-availability-details {
  margin-top: var(--space-lg);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: 0 18px 44px var(--color-shadow);
  overflow: hidden;
}

.material-availability-details summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-lg);
  cursor: pointer;
  list-style: none;
}

.material-availability-details summary::-webkit-details-marker {
  display: none;
}

.material-availability-details summary::after {
  content: '+';
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  color: var(--color-accent-dark);
  font-weight: 700;
}

.material-availability-details[open] summary::after {
  content: '−';
}

.material-availability-summary-text {
  display: grid;
  gap: var(--space-xs);
}

.material-availability-summary-text h3 {
  margin-bottom: 0;
}

.material-availability-summary-text p {
  max-width: 760px;
  margin: 0;
  color: var(--color-muted);
}

.material-availability-content {
  display: grid;
  gap: var(--space-lg);
  padding: 0 var(--space-lg) var(--space-lg);
}

.material-stock-note {
  margin: 0;
  padding: var(--space-md);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface-muted);
  color: var(--color-muted);
}

.material-stock-list {
  display: grid;
  gap: var(--space-lg);
}

.material-stock-group {
  display: grid;
  gap: var(--space-md);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-line);
}

.material-stock-header {
  display: grid;
  gap: var(--space-xs);
}

.material-stock-header h3 {
  margin-bottom: 0;
}

.material-stock-header p {
  max-width: 760px;
  margin: 0;
  color: var(--color-muted);
}

.material-colour-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-md);
}

.material-colour-card {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: var(--space-sm);
  align-items: stretch;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: #fffdf8;
  padding: var(--space-sm);
}

.material-colour-card-unavailable {
  opacity: 0.58;
}

.material-colour-card-unavailable h4 {
  text-decoration: line-through;
}

.material-colour-image {
  display: grid;
  min-height: 96px;
  place-items: center;
  border: 3px solid var(--color-photo-border);
  border-radius: var(--radius-sm);
  background:
    linear-gradient(135deg, rgba(138, 79, 43, 0.12), transparent),
    var(--color-surface-muted);
  color: var(--color-muted);
  font-size: 0.78rem;
  text-align: center;
}

.material-colour-image img {
  width: 100%;
  height: 100%;
  min-height: 96px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.material-colour-body {
  display: grid;
  align-content: start;
  gap: 0.35rem;
}

.material-colour-body h4 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  line-height: 1.15;
}

.material-colour-body p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.material-status {
  width: fit-content;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
  background: var(--color-surface-muted);
  color: var(--color-accent-dark);
  font-size: 0.78rem;
  font-weight: 700;
}

.material-colour-card-unavailable .material-status {
  color: var(--color-muted);
}

.material-restock,
.material-note {
  font-size: 0.84rem;
}

@media (max-width: 1000px) {
  .material-colour-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .material-availability-details summary {
    align-items: flex-start;
  }

  .material-colour-grid,
  .material-colour-card {
    grid-template-columns: 1fr;
  }
}