.preview-area {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 320px;
  background: var(--bg-elevated);
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  padding: 40px;
}
.preview-card {
  width: 280px;
  height: 180px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: box-shadow 0.2s, border-radius 0.2s;
}
.shadow-layer {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 12px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 8px;
  align-items: end;
  position: relative;
}
.shadow-layer .form-label {
  font-size: 0.72rem;
  margin-bottom: 0;
}
.shadow-layer__remove {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.7rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--t);
}
.shadow-layer__remove:hover {
  background: rgba(240,80,96,0.15);
  border-color: rgba(240,80,96,0.4);
  color: var(--danger);
}
.slider-group {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.slider-group input[type="range"] {
  width: 100%;
}
.slider-val {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  text-align: right;
}

.boxshadow-label-block {
  display: block;
  margin-bottom: 8px;
}

.boxshadow-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
}

.boxshadow-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.boxshadow-layers {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.boxshadow-icon {
  margin-right: 4px;
}

.boxshadow-css-output {
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-all;
}

.boxshadow-presets {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.shadow-color-input {
  width: 100%;
  height: 32px;
  cursor: pointer;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
}

.shadow-opacity-input {
  width: 48px;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  color: var(--text-primary);
  padding: 4px 6px;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  text-align: center;
}

.shadow-inset-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
}

.shadow-inset-checkbox {
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
  cursor: pointer;
}

.shadow-inset-label {
  font-size: 0.78rem;
  color: var(--text-secondary);
}