/* ──────────────────────────────────────────────────────────────────────────
 * LayersPanel — Pawfectly Yours
 *
 * Class names match the rewritten LayersPanel.jsx (S3 + S24):
 *   • Each row is a real <button> for keyboard access (S24).
 *   • A ✓ chip + ring communicates selection without relying on color (S24).
 *   • Drag handle (⋮⋮) per row enables HTML5 DnD reorder (S3).
 *   • Bulk-delete affordance appears in the titlebar when ≥2 are selected (S3).
 *   • Drop indicator (.layers-drop-indicator) is the pink insertion line that
 *     appears above or below the hovered row during a drag.
 * ────────────────────────────────────────────────────────────────────────── */

.layers-empty {
  padding: 1rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 12px;
}

/* Titlebar — title on the left, bulk-delete on the right. The bulk-delete
 * only renders when 2+ rows are selected; in single-select state the bar
 * is just the title and looks identical to before. */
.layers-titlebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  gap: 0.5rem;
}

.layers-title {
  margin: 0;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.layers-bulk-delete {
  appearance: none;
  background: transparent;
  border: 1px solid #fecaca;
  color: #b91c1c;
  font-size: 11px;
  font-weight: 700;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background 0.12s ease, border-color 0.12s ease, color 0.12s ease;
}

.layers-bulk-delete:hover {
  background: #fef2f2;
  border-color: #fca5a5;
  color: #991b1b;
}

.layers-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  list-style: none;
  padding: 0;
  margin: 0;
}

/* Row wrapper: container for the row plus optional drop-indicator lines
 * above and below it. Using a wrapper rather than positioning the
 * indicator inside the row makes it easier to render before/after the
 * row's bbox without margin tricks. */
.layers-row-wrap {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

/* The row itself — a flex row holding [delete] [main button] [grip]. It's
 * a div (not a button) because the row contains two distinct interactive
 * elements; the row-level click target is .layers-item-main. */
.layers-item {
  display: flex;
  align-items: stretch;
  gap: 0.25rem;
  padding: 0;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: background 0.12s ease, border-color 0.12s ease, opacity 0.12s ease;
}

.layers-item.selected {
  background: var(--accent-bg);
  border-color: var(--accent);
  /* Visible ring around selected rows so colorblind users can see
   * selection without depending on the pink fill alone. (S24.) */
  box-shadow: 0 0 0 2px rgba(236, 72, 153, 0.18);
}

/* While being dragged, dim the row so the user can see what's happening
 * and so the drop indicator lines below stand out by contrast. */
.layers-item.is-dragging {
  opacity: 0.4;
}

/* Drag grip — vertical dots glyph on the row's right edge. Decorative for
 * keyboard users (tabIndex=-1 in the JSX); actually pickable for mouse
 * via HTML5 DnD on the parent .layers-item. */
.layers-item-grip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  flex-shrink: 0;
  color: var(--text-muted);
  font-size: 11px;
  letter-spacing: -2px;
  cursor: grab;
  user-select: none;
}

.layers-item.is-dragging .layers-item-grip {
  cursor: grabbing;
}

/* Main row button — wraps the check chip, icon, and name. Reset native
 * button styling so it fits the row visually but inherits keyboard
 * accessibility from the underlying <button>. */
.layers-item-main {
  flex: 1;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  appearance: none;
  background: transparent;
  border: none;
  padding: 0.5rem 0.5rem;
  font: inherit;
  text-align: left;
  cursor: pointer;
  color: inherit;
  border-radius: var(--radius-sm);
  min-width: 0; /* allow ellipsis truncation inside flex */
}

.layers-item-main:focus-visible {
  outline: 2px solid var(--brand-pink);
  outline-offset: -2px;
}

/* Selection ✓ chip — rendered as a small circle on the left of selected
 * rows. Empty (no glyph, no border) when the row isn't selected so the
 * left edge of unselected rows reads cleanly. (S24.) */
.layers-item-check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  font-size: 11px;
  font-weight: 700;
  color: transparent;
  flex-shrink: 0;
  border-radius: 50%;
  transition: background 0.12s ease, color 0.12s ease;
}

.layers-item-check.is-on {
  background: var(--brand-pink);
  color: #fff;
}

/* Icon slot — fixed 24×24 box on the left of the row's main button.
 * Holds one of three things depending on element type:
 *   - <img>   for image and sticker layers (a mini preview of the actual
 *             pixel content; see renderIcon in LayersPanel.jsx)
 *   - <svg>   for text layers (a T glyph matching the Text tab nav icon)
 *   - <span>  fallback dot for layers we don't have a special icon for
 *
 * `overflow: hidden` + rounded corners give image thumbnails a polished
 * tile look; the soft tint background ensures transparent stickers still
 * read against the row. */
.layers-item-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: 4px;
  background: var(--brand-pink-tint);
  color: var(--text-secondary);
}

/* Image / sticker thumbnail. object-fit: contain keeps the artwork's
 * aspect ratio without cropping inside the square slot. */
.layers-item-icon-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  pointer-events: none;
  user-select: none;
}

/* Text-layer 'T' icon. Sized slightly smaller than the slot so it doesn't
 * touch the rounded edges; inherits currentColor from the row text so it
 * inverts cleanly when the row is selected. */
.layers-item-icon-svg {
  width: 16px;
  height: 16px;
}

/* Fallback dot for any element type without a custom icon. */
.layers-item-icon-fallback {
  font-size: 14px;
  line-height: 1;
  color: var(--text-muted);
}

/* When the row is selected, switch the icon slot's tint to read against
 * the pink selection background — a translucent white tile that lets the
 * thumbnail content show through and lifts the SVG T icon's contrast. */
.layers-item.selected .layers-item-icon {
  background: rgba(255, 255, 255, 0.65);
}

.layers-item-name {
  flex: 1;
  font-size: 12px;
  color: var(--text-primary);
  font-weight: 400;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

.layers-item.selected .layers-item-name {
  color: var(--accent);
  font-weight: 600;
}

/* Per-row action buttons (Change 4). Sit on the RIGHT side of each
 * row as siblings of .layers-item-main (the row's main click target),
 * stacked horizontally: [main] [duplicate] [lock] [delete] [grip].
 *
 * Sizing matches the previous .layers-item-delete (28×row-height) so
 * the row maintains its original visual weight; each button is just
 * a touch slimmer than the main click target so the three icons
 * don't dominate the row. Color states:
 *   • idle: muted grey, same as old delete X
 *   • hover: brand-pink tint
 *   • active (lock when locked): brand-pink fill + white icon —
 *     gives the user instant feedback that the toggle is on
 *   • delete hover: red, retaining the destructive-action colour
 *     signal from the previous design
 */
.layers-item-action {
  width: 28px;
  flex-shrink: 0;
  appearance: none;
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  transition: background 0.12s ease, color 0.12s ease;
}

.layers-item-action:hover {
  background: var(--brand-pink-soft);
  color: var(--brand-pink-strong);
}

.layers-item-action:focus-visible {
  outline: 2px solid var(--brand-pink);
  outline-offset: -2px;
}

.layers-item-action.is-active {
  background: var(--brand-pink-soft);
  color: var(--brand-pink-strong);
}

.layers-item-action.is-active:hover {
  background: var(--brand-pink);
  color: #fff;
}

/* Delete variant — same base + destructive-red hover so the user
 * gets the same colour-coded warning the previous bare ✕ button had. */
.layers-item-action--delete:hover {
  background: #fef2f2;
  color: #b91c1c;
}

/* Drop indicator — a thin pink line that appears above or below the
 * hovered row during a drag, communicating where the dragged row will
 * land if dropped. Rendered as a sibling of the row inside the row
 * wrapper so its position is unambiguous. (S3.) */
.layers-drop-indicator {
  height: 2px;
  background: var(--brand-pink);
  border-radius: 1px;
  margin: 0 4px;
  box-shadow: 0 0 0 2px rgba(236, 72, 153, 0.18);
}
