/* ============================================================
   BOX-SHADOW.CSS – makeCSS.com Box Shadow Generator v2.0
   Tab-based layout: Controls LEFT | Live Preview RIGHT
   ============================================================ */

/* Shadow Layer (Collapsible) */
.shadow-layer {
  background-color: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.15s;
}

.shadow-layer:hover {
  border-color: var(--color-border-hover);
}

.shadow-layer__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  user-select: none;
  gap: var(--space-sm);
}

.shadow-layer__header:hover {
  background-color: var(--color-surface);
}

.shadow-layer__title {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
}

.shadow-layer__number {
  display: inline-flex;
  width: 22px;
  height: 22px;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
  color: #fff;
  font-size: 0.6875rem;
  font-weight: var(--weight-bold);
  border-radius: 50%;
  flex-shrink: 0;
}

/* Color preview chip next to layer title */
.shadow-layer__color-chip {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  flex-shrink: 0;
}

/* Chevron icon for expand/collapse */
.shadow-layer__chevron {
  width: 16px;
  height: 16px;
  color: var(--color-text-muted);
  transition: transform 0.2s;
  flex-shrink: 0;
}

.shadow-layer--open .shadow-layer__chevron {
  transform: rotate(180deg);
}

.shadow-layer__actions {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.shadow-layer__remove {
  background: none;
  border: none;
  padding: 4px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  transition: color 0.15s, background-color 0.15s;
  display: flex;
  align-items: center;
}

.shadow-layer__remove svg {
  width: 14px;
  height: 14px;
}

.shadow-layer__remove:hover {
  color: var(--color-accent);
  background-color: rgba(247, 37, 133, 0.08);
}

/* Collapsible body */
.shadow-layer__body {
  display: none;
  padding: 0 var(--space-md) var(--space-md);
}

.shadow-layer--open .shadow-layer__body {
  display: block;
}

/* Layer Controls Grid */
.layer-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.layer-control {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.layer-control--full {
  grid-column: 1 / -1;
}

.layer-control__label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.layer-control__value {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-text);
}

.layer-control__color-row {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.layer-control__color-picker {
  width: 36px;
  height: 36px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0;
  background: none;
  flex-shrink: 0;
}

.layer-control__color-hex {
  width: 80px;
  padding: var(--space-xs) var(--space-sm);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
}

.layer-control__alpha {
  flex: 1;
  min-width: 60px;
}

/* Add Layer Button */
.add-layer-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  width: 100%;
  padding: var(--space-sm);
  background: none;
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  font-family: var(--font-sans);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background-color 0.15s;
  margin-top: var(--space-xs);
  flex-shrink: 0;
}

.add-layer-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: rgba(67, 97, 238, 0.04);
}

.add-layer-btn svg {
  width: 16px;
  height: 16px;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .layer-controls {
    grid-template-columns: 1fr;
  }
}