.shadow-tool {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.shadow-preview-area {
  min-height: 280px;
  border-radius: 0.75rem;
  border: 1px solid var(--color-border, #2a2d3a);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 2.5rem 1rem;
  transition: background 0.2s ease;
}

.shadow-preview-box {
  width: 180px;
  height: 180px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.875rem;
  transition: all 0.15s ease-out;
  user-select: none;
}

.layer-card {
  background: rgba(15, 17, 23, 0.6);
  border: 1px solid var(--color-border, #2a2d3a);
  border-radius: 0.75rem;
  padding: 1rem;
  margin-bottom: 0.75rem;
  transition: border-color 0.15s ease;
}

.layer-card:hover {
  border-color: rgba(79, 142, 247, 0.4);
}

.preset-chip {
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 9999px;
  border: 1px solid var(--color-border, #2a2d3a);
  background: var(--color-surface, #1a1d27);
  color: var(--color-snow, #f0f2f8);
  cursor: pointer;
  transition: all 0.15s ease;
}

.preset-chip:hover {
  border-color: #4f8ef7;
  color: #4f8ef7;
  transform: translateY(-1px);
}