/**
 * Make Tile — responsive compose shell
 * Breakpoints align with studio-responsive.css:
 *   Desktop ≥1025px  ·  Tablet 641–1024px  ·  Phone ≤640px
 * Theme tokens come from app.css (--panel-bg, --border, --accent, --cream, etc.)
 */

/* ==========================================================================
   Shared shell primitives (all breakpoints)
   ========================================================================== */

.composer-layout.layout-desktop,
.composer-layout.layout-tablet,
.composer-layout.layout-phone {
  position: relative;
  min-height: 0;
}

/* Deprecated / retired chrome — hide wherever present */
.composer-layout .compose-view-switch,
.composer-layout.layout-desktop .compose-view-switch,
.composer-layout.layout-tablet .compose-view-switch,
.composer-layout.layout-phone .compose-view-switch {
  display: none !important;
}

.composer-layout .tile-controls,
.composer-layout.layout-desktop .tile-controls,
.composer-layout.layout-tablet .tile-controls,
.composer-layout.layout-phone .tile-controls {
  display: none !important;
}

/* Canvas chrome host — positions floating toolbar over the work area */
/* Canvas chrome — docked above the tile (not over it) */
.compose-canvas-chrome {
  position: relative;
  inset: auto;
  z-index: 5;
  pointer-events: auto;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  padding: 0 0 10px;
  box-sizing: border-box;
  flex: 0 0 auto;
}

.compose-canvas-chrome > * {
  pointer-events: auto;
}

/* Docked toolbar */
.compose-toolbar {
  display: flex;
  flex-flow: row wrap;
  align-items: center;
  justify-content: center;
  gap: 6px 8px;
  width: 100%;
  max-width: none;
  padding: 8px 10px;
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: none;
  font-family: var(--font-ui);
  color: var(--cream);
  position: relative;
  z-index: 5;
}

.compose-toolbar .btn,
.compose-toolbar button,
.compose-toolbar .compose-toolbar-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 36px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface, var(--panel-bg));
  color: var(--cream);
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.compose-toolbar .btn:hover,
.compose-toolbar button:hover,
.compose-toolbar .compose-toolbar-btn:hover {
  background: var(--ghost-hover-bg, var(--card-bg-hover));
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
}

.compose-toolbar .btn[aria-pressed="true"],
.compose-toolbar button[aria-pressed="true"],
.compose-toolbar .compose-toolbar-btn[aria-pressed="true"],
.compose-toolbar .btn.is-active,
.compose-toolbar button.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-contrast);
}

.compose-toolbar .compose-toolbar-sep,
.compose-toolbar .toolbar-sep {
  width: 1px;
  align-self: stretch;
  min-height: 24px;
  margin: 0 2px;
  background: var(--border);
  flex: 0 0 auto;
}

.compose-toolbar .compose-zoom-label,
.compose-toolbar .zoom-pct {
  min-width: 3.2em;
  text-align: center;
  font-variant-numeric: tabular-nums;
  font-size: 0.8rem;
  color: var(--muted, var(--cream));
}

/* Popovers — absolute under toolbar; one open at a time (JS) */
.compose-toolbar-pop.host {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  align-items: stretch;
}

.compose-toolbar .compose-zoom {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.compose-toolbar-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.35em;
  padding: 0 5px;
  margin-left: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  font-size: 0.72rem;
}

.composer-work-panel,
.composer-pane#tileView,
.composer-pane {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.composer-pane#tileView > .tile-editor-wrap,
.composer-pane > .tile-editor-wrap {
  flex: 1 1 auto;
  min-height: 0;
}

/* Layer chips in the top toolbar — BG · 1 · 2 · 3 · 4 */
.layer-bar--toolbar {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0;
  flex: 0 0 auto;
  padding: 0;
  border: none;
  background: transparent;
}

.layer-bar--toolbar .layer-tabs {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
}

.layer-bar--toolbar .layer-slot {
  display: inline-flex;
  flex-direction: row;
  align-items: center;
  gap: 2px;
}

.layer-bar--toolbar .layer-slot--bg {
  margin-right: 2px;
  padding-right: 6px;
  border-right: 1px dashed var(--border);
}

.layer-bar--toolbar .layer-tab {
  min-width: 36px;
  min-height: 32px;
  height: auto;
  padding: 4px 8px;
}

.layer-bar--toolbar .layer-tab .layer-count {
  margin-left: 0;
}

/* Sidebar: visibility for BG + layers, plus actions for the active layer */
.inspector-layer-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 0 0 auto;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

.inspector-visibility-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.inspector-vis-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-height: 36px;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
}

.inspector-vis-row.is-active {
  border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
  background: color-mix(in srgb, var(--accent) 14%, transparent);
}

.inspector-vis-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--cream);
}

.inspector-vis-label .layer-count {
  margin-left: 0;
}

.inspector-visibility-list .layer-eye {
  width: 36px;
  height: 36px;
  flex: 0 0 auto;
  display: inline-flex;
}

.inspector-vis-row .layer-count[hidden] {
  display: none !important;
}

.inspector-layer-actions .layer-selection-row {
  margin: 0;
}

.selected-inspector.mode-bg .inspector-layer-actions #clearLayerBtn,
.selected-inspector.mode-bg .inspector-layer-actions .layer-selection-row {
  display: none;
}

/* Sprite selected (canvas): no layer chrome — only that sprite’s controls */
.selected-inspector.mode-sprite .inspector-layer-actions {
  display: none !important;
}

.selected-inspector.mode-sprite .inspector-arrange-body {
  display: none !important;
}

/* ==========================================================================
   Layer panel (toolbar 1–4) — mockup layout
   ========================================================================== */

.inspector-layer-panel {
  display: none;
  flex-direction: column;
  gap: 0;
  flex: 1 1 0;
  min-height: 0;
  max-height: 100%;
  overflow: hidden;
  padding: 0;
}

.selected-inspector.mode-arrange .inspector-layer-panel:not([hidden]) {
  display: flex;
}

.selected-inspector.mode-arrange .compose-inspector-crumb,
.selected-inspector.mode-sprite .compose-inspector-crumb {
  display: none !important;
}

.layer-panel-back {
  appearance: none;
  align-self: flex-start;
  margin: 10px 14px 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--accent);
  font-family: var(--font-ui);
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
}

.layer-panel-back:hover {
  text-decoration: underline;
}

.layer-panel-scroll {
  flex: 1 1 0;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0 14px 20px;
}

.selected-inspector.mode-arrange #inspectorPanelHead {
  display: none;
}

.layer-panel-hero {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  flex: 0 0 auto;
  padding: 8px 14px 12px;
  border-bottom: 0;
  background: transparent;
}

.layer-panel-meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: 2px;
}

.layer-panel-rename {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.layer-panel-rename:hover {
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
}

.layer-panel-tabs {
  display: flex;
  gap: 18px;
  flex: 0 0 auto;
  padding: 0 14px;
  border-bottom: 1px solid var(--border);
}

.layer-panel-tab {
  appearance: none;
  margin: 0;
  padding: 10px 0 9px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--muted);
  font-family: var(--font-ui);
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
}

.layer-panel-tab.is-active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.layer-tab-panel {
  display: none;
  flex-direction: column;
  gap: 14px;
  padding-top: 14px;
}

.layer-tab-panel.is-active,
.layer-tab-panel:not([hidden]).is-active {
  display: flex;
}

.layer-tab-panel[hidden] {
  display: none !important;
}

.layer-inline-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 40px;
  padding: 8px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin: 0;
}

.layer-inline-label {
  flex: 0 1 auto;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--cream);
}

.layer-inline-row select {
  flex: 0 0 auto;
  min-width: 7.5rem;
  max-width: 55%;
  min-height: 34px;
  padding: 6px 28px 6px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface, var(--panel-bg));
  color: var(--cream);
  font: inherit;
  font-size: 0.85rem;
}

.layer-advanced {
  border-top: 1px solid var(--border);
  padding-top: 4px;
}

.layer-advanced > summary {
  list-style: none;
  cursor: pointer;
  padding: 10px 0;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--cream);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.layer-advanced > summary::-webkit-details-marker {
  display: none;
}

.layer-advanced > summary::after {
  content: '›';
  color: var(--muted);
  font-size: 1.1rem;
  transition: transform 0.12s;
}

.layer-advanced[open] > summary::after {
  transform: rotate(90deg);
}

.layer-panel-actions {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 4px;
  border-top: 1px solid var(--border);
}

.layer-panel-action {
  appearance: none;
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  margin: 0;
  padding: 12px 0;
  border: 0;
  border-bottom: 1px solid var(--border);
  background: transparent;
  color: var(--cream);
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
}

.layer-panel-action:last-child {
  border-bottom: 0;
}

.layer-panel-action.is-danger {
  color: #e07070;
}

.layer-panel-action:hover {
  color: var(--accent);
}

.layer-panel-action.is-danger:hover {
  color: #f0a0a0;
}

.layer-move {
  display: inline-flex;
  gap: 6px;
}

.layer-panel-hero-actions {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  flex: 0 0 auto;
}

.layer-panel-menu-wrap {
  position: relative;
}

.layer-panel-menu-btn {
  appearance: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: transparent;
  color: var(--accent);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
}

.layer-panel-menu-btn:hover,
.layer-panel-menu-btn[aria-expanded="true"] {
  border-color: var(--accent);
  color: var(--cream);
}

.layer-panel-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  z-index: 20;
  min-width: 220px;
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel-bg);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.28);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.layer-panel-menu[hidden] {
  display: none !important;
}

.layer-panel-menu-item {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--cream);
  text-align: left;
  padding: 10px 12px;
  border-radius: 8px;
  font: inherit;
  font-size: 0.82rem;
  cursor: pointer;
}

.layer-panel-menu-item:hover,
.layer-panel-menu-item:focus-visible {
  background: rgba(217, 70, 168, 0.18);
  outline: none;
}

.layer-panel-menu-item.is-danger {
  color: #e07070;
}

.layer-panel-menu-item.is-danger:hover,
.layer-panel-menu-item.is-danger:focus-visible {
  background: rgba(194, 59, 90, 0.18);
}

.layer-panel-title-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.layer-panel-title {
  margin: 0;
  font-family: var(--font-display, Georgia, 'Times New Roman', serif);
  font-size: 1.55rem;
  font-weight: 600;
  color: var(--cream);
  line-height: 1.15;
}

.layer-panel-count {
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0;
  border-radius: 0;
  background: transparent;
  color: var(--muted);
}

.layer-panel-lead {
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.35;
  color: var(--muted, var(--cream));
}

.layer-panel-eye {
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
}

.layer-panel-order {
  display: none !important;
}

.layer-panel-order-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--cream);
}

.layer-section {
  border: 0;
  border-radius: 0;
  background: transparent;
  overflow: visible;
}

.layer-block {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px 0;
  border: 0;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  background: transparent;
}

.layer-block:last-of-type {
  border-bottom: 0;
}

.layer-block-title {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.layer-block-subtitle {
  margin: 4px 0 0;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.layer-block-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.layer-block .inspector-field {
  margin: 0;
}

.layer-opacity-bar {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.layer-opacity-title {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--cream);
}

.layer-opacity-bar .inspector-slider-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.layer-opacity-bar input[type="range"] {
  flex: 1 1 auto;
  min-width: 0;
}

.layer-section-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 12px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--cream);
  list-style: none;
}

.layer-section-summary::-webkit-details-marker {
  display: none;
}

.layer-section-summary::after {
  content: '›';
  font-size: 1.1rem;
  opacity: 0.6;
  transform: rotate(0deg);
  transition: transform 0.15s;
}

.layer-section[open] > .layer-section-summary::after {
  transform: rotate(90deg);
}

.layer-section-reset {
  margin-left: auto;
  border: none;
  background: transparent;
  color: var(--accent);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  padding: 2px 4px;
  flex: 0 0 auto;
}

.layer-section-reset:hover {
  text-decoration: underline;
}

.layer-section-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.layer-section-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 0 12px 12px;
}

.layer-section-note,
.layer-section-foot {
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.4;
  color: var(--muted, var(--cream));
}

.layer-color-modes {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 4px;
  padding: 3px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--cream) 8%, transparent);
  border: 1px solid var(--border);
}

html[data-theme="light"] .layer-color-modes {
  background: #f3f0ea;
}

.layer-color-mode {
  min-height: 34px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--cream);
  font: inherit;
  font-size: 0.72rem;
  font-weight: 600;
  cursor: pointer;
  padding: 4px 2px;
}

.layer-color-mode.is-active {
  background: color-mix(in srgb, var(--accent) 55%, var(--panel-bg));
  color: var(--accent-contrast, var(--cream));
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 50%, transparent);
}

html[data-theme="light"] .layer-color-mode.is-active {
  background: #9a7b52;
  color: #faf8f4;
  box-shadow: none;
}

.layer-color-tint-controls,
.layer-color-extra {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.layer-color-tint-controls[hidden],
.layer-color-extra[hidden] {
  display: none !important;
}

/* ── Arrange layer (mockup) ─────────────────────────────────────────────── */

.arrange-layer-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.arrange-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.arrange-field-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--cream);
}

.arrange-field select {
  width: 100%;
  min-height: 40px;
  padding: 8px 32px 8px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel-bg);
  color: var(--cream);
  font: inherit;
  font-size: 0.88rem;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%239a7b52' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}

html[data-theme="dark"] .arrange-field select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23c4a574' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
}

.arrange-row {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 12px;
  align-items: end;
}

.arrange-field-grow {
  min-width: 0;
}

.arrange-layout-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.arrange-layout-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  min-height: 68px;
  padding: 8px 4px 6px;
  border: 1.5px solid var(--border);
  border-radius: 12px;
  background: var(--panel-bg);
  color: var(--muted, var(--cream));
  cursor: pointer;
  font: inherit;
}

.arrange-layout-card:hover {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
}

.arrange-layout-card.is-active {
  border-color: var(--accent);
  color: var(--accent-strong, var(--accent));
  background: color-mix(in srgb, var(--accent) 10%, var(--panel-bg));
}

.arrange-layout-check {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 0.12s, transform 0.12s;
}

.arrange-layout-check::after {
  content: '';
  position: absolute;
  left: 4.5px;
  top: 3px;
  width: 4px;
  height: 7px;
  border: solid var(--accent-contrast, #fff);
  border-width: 0 1.8px 1.8px 0;
  transform: rotate(45deg);
}

.arrange-layout-card.is-active .arrange-layout-check {
  opacity: 1;
  transform: scale(1);
}

.arrange-layout-icon {
  width: 40px;
  height: 30px;
  fill: currentColor;
  opacity: 0.72;
}

.arrange-layout-card.is-active .arrange-layout-icon {
  opacity: 1;
}

.arrange-layout-name {
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.2;
  text-align: center;
}

.arrange-toggle-field {
  align-items: flex-start;
}

.arrange-toggle {
  position: relative;
  display: inline-flex;
  width: 44px;
  height: 26px;
  margin-top: 2px;
}

.arrange-toggle input {
  position: absolute;
  inset: 0;
  opacity: 0;
  margin: 0;
  cursor: pointer;
  z-index: 1;
}

.arrange-toggle-track {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 999px;
  background: color-mix(in srgb, var(--cream) 18%, transparent);
  border: 1px solid var(--border);
  transition: background 0.15s, border-color 0.15s;
}

.arrange-toggle-track::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  transition: transform 0.15s;
}

html[data-theme="dark"] .arrange-toggle-track::after {
  background: var(--cream);
}

.arrange-toggle input:checked + .arrange-toggle-track {
  background: var(--accent);
  border-color: var(--accent);
}

.arrange-toggle input:checked + .arrange-toggle-track::after {
  transform: translateX(18px);
}

.arrange-toggle input:focus-visible + .arrange-toggle-track {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.arrange-run-btn,
.arrange-layer-body > .arrange-run-btn,
.selected-inspector .arrange-run-btn {
  display: flex !important;
  visibility: visible !important;
  width: 100%;
  min-height: 48px;
  justify-content: center;
  align-items: center;
  border: none;
  border-radius: 12px;
  background: var(--accent) !important;
  border-color: var(--accent) !important;
  color: var(--accent-contrast, #fff) !important;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  box-shadow: none;
}

.arrange-run-btn:hover:not(:disabled),
.selected-inspector .arrange-run-btn:hover:not(:disabled) {
  background: var(--accent-strong, var(--accent)) !important;
  color: var(--accent-contrast, #fff) !important;
}

.arrange-run-btn:disabled,
.selected-inspector .arrange-run-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.arrange-foot {
  margin: 0;
  text-align: center;
  font-size: 0.75rem;
  color: var(--muted, var(--cream));
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Batch edit replaces the layer panel entirely — never stack both */
.selected-inspector.mode-batch .inspector-layer-panel {
  display: none !important;
}

.selected-inspector.mode-batch #inspectorBody:not([hidden]),
.selected-inspector.mode-batch #inspectorColourPanel:not([hidden]) {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  max-height: none;
  border-top: none;
}

.selected-inspector.mode-batch #inspectorPanelHead {
  display: none;
}

.inspector-batch-head {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 4px 0 12px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}

.inspector-batch-back {
  appearance: none;
  align-self: flex-start;
  border: none;
  background: transparent;
  color: var(--accent);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 4px 0 10px;
  margin: 0 0 4px;
  cursor: pointer;
}

.inspector-batch-back:hover {
  color: var(--cream);
}

.arrange-apply-btn,
#brickLayoutBtn {
  display: none !important;
}

.selected-inspector .layer-rotate-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.selected-inspector .layer-rotate-row input[type="number"] {
  width: 3.2rem;
  min-width: 3.2rem;
  box-sizing: border-box;
  padding: 6px 4px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface, var(--panel-bg));
  color: var(--cream);
  font-family: inherit;
  font-size: 0.85rem;
  text-align: center;
}

.selected-inspector .layer-rotate-row .btn {
  flex: 0 0 auto;
}

.inspector-batch-title {
  margin: 0;
  font-family: var(--font-display, var(--font-ui));
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--cream);
}

.inspector-batch-lead {
  margin: 0;
  font-size: 0.8rem;
  line-height: 1.35;
  color: var(--muted, var(--cream));
}

.compose-popover {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  z-index: 80;
  min-width: min(320px, calc(100vw - 32px));
  max-width: min(420px, calc(100vw - 24px));
  max-height: 70vh;
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 12px 14px;
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-soft);
  font-family: var(--font-ui);
  color: var(--cream);
}

.compose-popover[hidden] {
  display: none !important;
}

.compose-popover .panel-head,
.compose-popover .compose-popover-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin: -4px 0 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
}

.compose-popover .compose-popover-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Anchor popovers to a toolbar control when nested */
.compose-toolbar .compose-toolbar-group,
.compose-toolbar .compose-tool-wrap {
  position: relative;
}

.compose-toolbar .compose-toolbar-group > .compose-popover,
.compose-toolbar .compose-tool-wrap > .compose-popover {
  left: 50%;
  right: auto;
}

/* Layers & More — hidden until a layout rule / open state shows them (avoids F5 FOUC) */
.layers-panel[data-studio-panel="layers"],
.more-panel[data-studio-panel="more"] {
  display: none;
  flex-direction: column;
  min-height: 0;
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-ui);
  color: var(--cream);
  overflow: hidden;
}

.layers-panel .panel-head,
.more-panel .panel-head,
.selected-inspector .panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-shrink: 0;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  background: var(--card-bg, transparent);
}

.layers-panel .panel-head h2,
.more-panel .panel-head h2,
.selected-inspector .panel-head h2,
.layers-panel .panel-title,
.more-panel .panel-title,
.selected-inspector .panel-title {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  font-family: var(--font-ui);
}

.layers-panel .panel-body,
.more-panel .panel-body,
.selected-inspector .panel-body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 12px;
}

/* Selected-sprite inspector — shared block, repositioned per breakpoint */
.selected-inspector#selectedInspector,
.selected-inspector[data-studio-panel="adjust"] {
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: var(--panel-bg);
  border: 1px solid var(--border);
  font-family: var(--font-ui);
  color: var(--cream);
  overflow: hidden;
}

.selected-inspector .inspector-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex: 1 1 auto;
  padding: 24px 16px;
  text-align: center;
  color: var(--muted, var(--cream));
  font-size: 0.9rem;
}

.selected-inspector .inspector-empty[hidden],
.selected-inspector.has-selection .inspector-empty,
.selected-inspector.mode-sprite .inspector-empty,
.selected-inspector.mode-bg .inspector-empty,
.selected-inspector.mode-arrange .inspector-empty {
  display: none !important;
}

.selected-inspector .inspector-body {
  display: none;
  flex-direction: column;
  gap: 12px;
  flex: 1 1 auto;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 12px;
}

.selected-inspector .inspector-body:not([hidden]) {
  display: flex;
}

.selected-inspector .inspector-body[hidden] {
  display: none !important;
}

/* Sprite / batch mode: match layer panel — fixed chrome + scrolling tab body */
.selected-inspector.mode-sprite,
.selected-inspector.mode-batch {
  overflow: hidden;
}

.selected-inspector.mode-sprite #inspectorBody:not([hidden]),
.selected-inspector.mode-batch #inspectorBody:not([hidden]) {
  display: flex;
  flex-direction: column;
  gap: 0;
  flex: 1 1 0;
  min-height: 0;
  max-height: 100%;
  overflow: hidden;
  padding: 0;
}

.selected-inspector.mode-sprite .sprite-panel-scroll,
.selected-inspector.mode-batch .sprite-panel-scroll {
  flex: 1 1 0;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
}

.selected-inspector.mode-sprite .sprite-panel-hero,
.selected-inspector.mode-batch .sprite-panel-hero {
  padding-top: 6px;
}

.selected-inspector.mode-sprite .sprite-panel-hero .inspector-thumb-row,
.selected-inspector.mode-batch .sprite-panel-hero .inspector-thumb-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin: 0;
  width: 100%;
}

.selected-inspector.mode-sprite .sprite-panel-hero .inspector-thumb,
.selected-inspector.mode-batch .sprite-panel-hero .inspector-thumb {
  flex: 0 0 auto;
  border-radius: 8px;
}

.selected-inspector.mode-sprite .sprite-panel-hero .layer-panel-title,
.selected-inspector.mode-batch .sprite-panel-hero .layer-panel-title {
  margin: 0;
  font-size: 1.15rem;
}

.selected-inspector.mode-sprite .inspector-colour-panel,
.selected-inspector.mode-batch .inspector-colour-panel {
  display: none !important;
}

/* BG mode: editor scrolls inside the panel */
.selected-inspector.mode-bg #inspectorBgBody:not([hidden]) {
  flex: 1 1 0;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
}

.selected-inspector .inspector-mode-hint {
  margin: 0 0 4px;
  font-size: 0.8rem;
  line-height: 1.35;
  color: var(--muted, var(--cream));
}

.selected-inspector .inspector-colour-scope {
  margin: 0 0 8px;
  font-size: 0.78rem;
  line-height: 1.35;
  color: var(--muted, var(--cream));
}

.selected-inspector .inspector-colour-panel:not([hidden]) {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 0 0 auto;
  min-height: 0;
  overflow: visible;
  padding: 10px 12px 12px;
  border-bottom: 1px solid var(--border);
}

.selected-inspector .inspector-bg-body .tile-tool-row,
.selected-inspector .inspector-arrange-body .tile-tool-row {
  flex-wrap: wrap;
  gap: 8px;
}

.selected-inspector .inspector-bg-body {
  gap: 12px;
}

.selected-inspector .inspector-bg-body .bg-panel-hero {
  flex: 0 0 auto;
}

.selected-inspector .inspector-bg-body .bg-panel-order {
  flex: 0 0 auto;
  margin: 0;
}

.selected-inspector .inspector-arrange-body select {
  min-height: 36px;
  flex: 1 1 140px;
}

.selected-inspector .inspector-arrange-body .arrange-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.selected-inspector .inspector-arrange-body #brickLayoutBtn {
  display: none !important;
}

.selected-inspector .inspector-thumb-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.selected-inspector .inspector-thumb {
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background:
    linear-gradient(45deg, var(--canvas-check-a) 25%, transparent 25%),
    linear-gradient(-45deg, var(--canvas-check-a) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--canvas-check-a) 75%),
    linear-gradient(-45deg, transparent 75%, var(--canvas-check-a) 75%);
  background-size: 12px 12px;
  background-position: 0 0, 0 6px, 6px -6px, -6px 0;
  background-color: var(--canvas-check-b);
  object-fit: contain;
}

.selected-inspector .inspector-name {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--cream);
  word-break: break-word;
}

.selected-inspector .inspector-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.selected-inspector .inspector-actions .btn,
.selected-inspector .inspector-actions button {
  flex: 1 1 auto;
  min-width: 0;
}

.selected-inspector .inspector-flip-row {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  gap: 8px;
}

.selected-inspector .inspector-flip-btn {
  flex: 1 1 0;
  width: auto;
  min-width: 0;
  justify-content: center;
  min-height: 40px;
  gap: 6px;
  padding-inline: 8px;
}

.selected-inspector .inspector-flip-icon {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

.selected-inspector .inspector-pct-input {
  width: 2.5rem;
  min-width: 2.5rem;
  max-width: 2.5rem;
  flex: 0 0 2.5rem;
  box-sizing: border-box;
  padding: 5px 2px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface, var(--panel-bg));
  color: var(--cream);
  font-family: inherit;
  font-size: 0.8rem;
  line-height: 1.2;
  text-align: center;
  -moz-appearance: textfield;
  appearance: textfield;
}

.selected-inspector .inspector-pct-input::-webkit-outer-spin-button,
.selected-inspector .inspector-pct-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.selected-inspector .inspector-pct-suffix {
  flex: 0 0 auto;
  width: 0.85rem;
  font-size: 0.78rem;
  color: var(--muted, var(--cream));
}

.selected-inspector .inspector-slider-row {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  width: 100%;
}

.selected-inspector .inspector-slider-row input[type="range"] {
  flex: 1 1 auto;
  min-width: 0;
  width: 100%;
}

.selected-inspector .inspector-footer-actions {
  display: flex;
  gap: 8px;
  margin-top: 4px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}

.selected-inspector .inspector-footer-actions .btn {
  flex: 1 1 0;
  min-height: 40px;
}

.selected-inspector details.inspector-colour {
  margin-top: 4px;
  padding: 12px 14px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--accent) 11%, var(--panel-bg));
}

.selected-inspector .inspector-colour-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 12px;
}

.selected-inspector details.inspector-colour > summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.88rem;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--cream);
}

.selected-inspector .inspector-colour-summary-label {
  flex: 1 1 auto;
  min-width: 0;
}

.selected-inspector .inspector-colour-summary-actions {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
}

.selected-inspector .inspector-colour-reset {
  appearance: none;
  border: none;
  background: transparent;
  padding: 4px 6px;
  margin: 0;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--muted, var(--cream));
  cursor: pointer;
  border-radius: 6px;
}

.selected-inspector .inspector-colour-reset:hover {
  color: var(--cream);
  background: color-mix(in srgb, var(--cream) 8%, transparent);
}

.selected-inspector .inspector-colour-reset:disabled {
  opacity: 0.45;
  cursor: default;
}

.selected-inspector details.inspector-colour > summary::-webkit-details-marker {
  display: none;
}

.selected-inspector details.inspector-colour > summary::after {
  content: "▴";
  flex: 0 0 auto;
  font-size: 0.75rem;
  opacity: 0.7;
  line-height: 1;
}

.selected-inspector details.inspector-colour:not([open]) > summary::after {
  content: "▾";
}

.selected-inspector .inspector-colour-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 0;
}

.selected-inspector .inspector-colour-field-label {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--muted, var(--cream));
}

.selected-inspector .inspector-colour-field select {
  width: 100%;
  min-height: 38px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel-bg);
  color: var(--cream);
  padding: 6px 10px;
  font: inherit;
  font-size: 0.88rem;
}

.selected-inspector .inspector-tint-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.selected-inspector .inspector-tint-swatch {
  position: relative;
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  overflow: hidden;
  cursor: pointer;
  margin: 0;
  background: var(--panel-bg);
}

.selected-inspector .inspector-tint-swatch input[type="color"] {
  position: absolute;
  inset: -4px;
  width: calc(100% + 8px);
  height: calc(100% + 8px);
  padding: 0;
  border: none;
  cursor: pointer;
  background: transparent;
}

.selected-inspector .inspector-tint-hex {
  flex: 1 1 auto;
  min-width: 0;
  min-height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel-bg);
  color: var(--cream);
  padding: 6px 10px;
  font: inherit;
  font-size: 0.88rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.selected-inspector .inspector-tint-dropper {
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  min-height: 36px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}

.selected-inspector .inspector-tint-dropper.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-contrast);
}

.selected-inspector .inspector-strength-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}

.selected-inspector .inspector-strength-pct {
  font-size: 0.82rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--cream);
}

.selected-inspector #inspectorColorStrength {
  width: 100%;
  margin: 0;
  accent-color: var(--accent);
}

.selected-inspector .inspector-strength-ends {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.72rem;
  color: var(--muted, var(--cream));
}

.selected-inspector .inspector-colour-hint {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  margin: 0;
  font-size: 0.75rem;
  line-height: 1.35;
  color: var(--muted, var(--cream));
}

.selected-inspector .inspector-colour-hint-mark {
  flex: 0 0 auto;
  color: var(--accent-strong, var(--accent));
  font-weight: 700;
}

.layer-selection-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.selected-inspector .inspector-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.selected-inspector .inspector-field label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted, var(--cream));
}

.selected-inspector .inspector-field input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.selected-inspector .inspector-rotate-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  min-width: 0;
}

.selected-inspector .inspector-rotate-row > .btn {
  flex: 1 1 auto;
  min-width: 0;
  padding-inline: 8px;
}

.selected-inspector .inspector-rotate-row .tile-rot-field {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  flex: 0 0 auto;
  margin: 0;
  min-width: 0;
}

.selected-inspector .inspector-rotate-row .tile-rot-field input[type="number"] {
  width: 2.6rem;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
  padding: 5px 2px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface, var(--panel-bg));
  color: var(--cream);
  font-family: inherit;
  font-size: 0.8rem;
  text-align: center;
}

.selected-inspector .inspector-rotate-exact {
  margin-top: 2px;
}

.selected-inspector .inspector-rotate-exact .tile-rot-field {
  flex: 1 1 auto;
}

.selected-inspector .inspector-rotate-exact .btn {
  flex: 0 0 auto;
}

.selected-inspector .adjust-handle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 100%;
  min-height: 28px;
  padding: 6px 12px;
  border: none;
  border-bottom: 1px solid var(--border);
  background: var(--card-bg, transparent);
  color: var(--muted, var(--cream));
  cursor: pointer;
  font-family: var(--font-ui);
}

.selected-inspector .adjust-handle::after {
  content: "";
  width: 36px;
  height: 4px;
  border-radius: 999px;
  background: var(--border);
}

.selected-inspector .adjust-handle .adjust-chevron,
.selected-inspector .adjust-handle[data-chevron]::before {
  display: inline-block;
  margin-left: 8px;
  font-size: 0.75rem;
  color: var(--accent);
  transition: transform 0.2s ease;
}

.selected-inspector.adjust-collapsed .adjust-handle .adjust-chevron,
.selected-inspector.adjust-collapsed .adjust-handle[data-chevron]::before {
  transform: rotate(180deg);
}

/* Sprites panel search (shared) */
.sprites-panel .sprites-search,
.sprites-panel .compose-sprites-search {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px 12px;
  border-bottom: none;
  flex-shrink: 0;
}

.sprites-panel .sprites-search input,
.sprites-panel .compose-sprites-search input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface, var(--panel-bg));
  color: var(--cream);
  font-family: var(--font-ui);
  font-size: 0.85rem;
}

.sprites-panel .sprites-search input::placeholder,
.sprites-panel .compose-sprites-search input::placeholder {
  color: var(--muted);
}

/* Backdrop used by tablet/phone drawers */
.composer-layout .compose-drawer-backdrop:not([hidden]) {
  display: block;
  position: fixed;
  inset: 0;
  z-index: 55;
  background: var(--gate-scrim);
  opacity: 0.55;
  border: none;
  padding: 0;
  margin: 0;
  cursor: pointer;
}

.composer-layout .compose-drawer-backdrop[hidden] {
  display: none !important;
}


/* ==========================================================================
   Desktop — min-width 1025px · .layout-desktop
   Permanent sprites | canvas | inspector; toolbar popovers over canvas
   ========================================================================== */

@media (min-width: 1025px) {
  .composer-layout.layout-desktop,
  .splitter-layout.composer-layout.layout-desktop {
    display: grid;
    grid-template-columns: minmax(220px, 268px) minmax(0, 1fr) minmax(260px, 300px);
    grid-template-rows: minmax(0, 1fr);
    grid-template-areas: "sprites work inspector";
    gap: 0;
    align-items: stretch;
    height: 100%;
    min-height: 0;
    overflow: hidden;
  }

  .composer-layout.layout-desktop > .sprites-panel,
  .composer-layout.layout-desktop > [data-studio-panel="sprites"],
  .composer-layout.layout-desktop > #composeLibraryMount {
    grid-area: sprites;
    display: flex !important;
    flex-direction: column;
    min-height: 0;
    overflow: hidden;
    border-right: 1px solid var(--border);
    border-radius: 0;
    z-index: 1;
  }

  .composer-layout.layout-desktop > .composer-work-panel,
  .composer-layout.layout-desktop > .composer-pane {
    grid-area: work;
    position: relative;
    display: flex !important;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
    overflow: hidden;
  }

  /* Overlay panels must not create extra grid tracks */
  .composer-layout.layout-desktop > .layers-panel,
  .composer-layout.layout-desktop > .more-panel,
  .composer-layout.layout-desktop > .preview-panel,
  .composer-layout.layout-desktop > .help-panel,
  .composer-layout.layout-desktop > .compose-drawer-backdrop {
    grid-area: work;
    z-index: 80;
  }

  /* Canvas / Project hubs are phone & tablet dock drawers only */
  .composer-layout.layout-desktop > [data-studio-panel="canvas"],
  .composer-layout.layout-desktop > [data-studio-panel="project"],
  .composer-layout.layout-desktop > .compose-hub-panel {
    display: none !important;
  }

  .composer-layout.layout-desktop > .selected-inspector#selectedInspector,
  .composer-layout.layout-desktop > .selected-inspector[data-studio-panel="adjust"] {
    grid-area: inspector;
    display: flex !important;
    flex-direction: column;
    min-height: 0;
    height: 100%;
    max-height: 100%;
    overflow: hidden;
    border-left: 1px solid var(--border);
    border-radius: 0;
    z-index: 1;
  }

  /* Layers / More: floating cards when opened from toolbar (not permanent columns) */
  .composer-layout.layout-desktop > .layers-panel[data-studio-panel="layers"],
  .composer-layout.layout-desktop > .more-panel[data-studio-panel="more"] {
    display: none;
    position: absolute;
    top: 72px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 70;
    width: min(420px, 92%);
    max-height: min(70vh, 640px);
    flex-direction: column;
    background: var(--panel-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-soft);
    overflow: hidden;
  }

  .composer-layout.layout-desktop.studio-panel-open-layers > .layers-panel,
  .composer-layout.layout-desktop.popover-open-layers > .layers-panel {
    display: flex !important;
  }

  .composer-layout.layout-desktop.studio-panel-open-more > .more-panel,
  .composer-layout.layout-desktop.popover-open-more > .more-panel {
    display: flex !important;
  }

  .composer-layout.layout-desktop .compose-popover.layers-panel,
  .composer-layout.layout-desktop .compose-popover.more-panel,
  .composer-layout.layout-desktop .compose-popover[data-studio-panel="layers"],
  .composer-layout.layout-desktop .compose-popover[data-studio-panel="more"] {
    display: flex;
    flex-direction: column;
  }

  .composer-layout.layout-desktop .compose-popover[hidden] {
    display: none !important;
  }

  .composer-layout.layout-desktop .compose-canvas-chrome {
    padding: 10px 10px 8px;
  }

  .composer-layout.layout-desktop .compose-toolbar {
    margin-inline: 0;
  }

  /* Sprites stay in the left column on desktop — no toggle needed in the toolbar */
  .composer-layout.layout-desktop #toolbarSpritesBtn {
    display: none !important;
  }

  .composer-layout.layout-desktop .selected-inspector .adjust-handle {
    display: none !important;
  }

  .composer-layout.layout-desktop .studio-bottom-dock {
    display: none !important;
  }

  .composer-layout.layout-desktop .sprites-panel > .studio-drawer-close,
  .composer-layout.layout-desktop .sprites-panel > .drawer-close,
  .composer-layout.layout-desktop .selected-inspector > .studio-drawer-close,
  .composer-layout.layout-desktop .selected-inspector > .drawer-close {
    display: none !important;
  }

  /* Mode bodies driven by [hidden]; empty is unused when mode-bg/arrange/sprite */
  .composer-layout.layout-desktop .selected-inspector .inspector-empty[hidden] {
    display: none !important;
  }

  .composer-layout.layout-desktop .selected-inspector .inspector-body[hidden] {
    display: none !important;
  }

  .composer-layout.layout-desktop .selected-inspector .inspector-body:not([hidden]) {
    display: flex;
  }
}


/* ==========================================================================
   Tablet — 641px–1024px · .layout-tablet
   Canvas-first; sprites/layers as left drawers; inspector as bottom sheet
   ========================================================================== */

@media (min-width: 641px) and (max-width: 1024px) {
  .composer-layout.layout-tablet,
  .splitter-layout.composer-layout.layout-tablet {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: minmax(0, 1fr);
    grid-template-areas: "work";
    position: relative;
    height: 100%;
    min-height: 0;
    overflow: hidden;
    padding: 8px;
  }

  .composer-layout.layout-tablet > .composer-work-panel,
  .composer-layout.layout-tablet > .composer-pane {
    grid-area: work;
    position: relative;
    display: flex !important;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
    overflow: hidden;
    z-index: 1;
  }

  /* Side drawers (left) for sprites & layers */
  .composer-layout.layout-tablet > .sprites-panel,
  .composer-layout.layout-tablet > [data-studio-panel="sprites"],
  .composer-layout.layout-tablet > #composeLibraryMount,
  .composer-layout.layout-tablet > .layers-panel[data-studio-panel="layers"],
  .composer-layout.layout-tablet > .more-panel[data-studio-panel="more"] {
    position: fixed;
    top: var(--studio-chrome-top, 96px);
    bottom: 0;
    left: 0;
    width: min(340px, 86vw);
    max-width: 400px;
    margin: 0;
    z-index: 70;
    display: flex !important;
    flex-direction: column;
    border-radius: 0 var(--radius) var(--radius) 0;
    border: 1px solid var(--border);
    border-left: none;
    box-shadow: var(--shadow-soft);
    background: var(--panel-bg);
    transform: translateX(-105%);
    visibility: hidden;
    transition:
      transform 0.28s cubic-bezier(0.22, 1, 0.36, 1),
      visibility 0s linear 0.28s;
    overflow: hidden;
  }

  .composer-layout.layout-tablet.studio-panel-open-sprites > .sprites-panel,
  .composer-layout.layout-tablet.studio-panel-open-sprites > [data-studio-panel="sprites"],
  .composer-layout.layout-tablet.studio-panel-open-sprites > #composeLibraryMount,
  .composer-layout.layout-tablet.drawer-open-sprites > .sprites-panel,
  .composer-layout.layout-tablet.drawer-open-sprites > #composeLibraryMount,
  .composer-layout.layout-tablet.sprites-open > .sprites-panel,
  .composer-layout.layout-tablet.sprites-open > #composeLibraryMount {
    transform: translateX(0);
    visibility: visible;
    transition:
      transform 0.28s cubic-bezier(0.22, 1, 0.36, 1),
      visibility 0s linear 0s;
  }

  .composer-layout.layout-tablet.studio-panel-open-layers > .layers-panel,
  .composer-layout.layout-tablet.studio-panel-open-layers > [data-studio-panel="layers"],
  .composer-layout.layout-tablet.drawer-open-layers > .layers-panel,
  .composer-layout.layout-tablet.layers-open > .layers-panel {
    transform: translateX(0);
    visibility: visible;
    transition:
      transform 0.28s cubic-bezier(0.22, 1, 0.36, 1),
      visibility 0s linear 0s;
  }

  .composer-layout.layout-tablet.studio-panel-open-more > .more-panel,
  .composer-layout.layout-tablet.studio-panel-open-more > [data-studio-panel="more"],
  .composer-layout.layout-tablet.drawer-open-more > .more-panel,
  .composer-layout.layout-tablet.more-open > .more-panel {
    transform: translateX(0);
    visibility: visible;
    transition:
      transform 0.28s cubic-bezier(0.22, 1, 0.36, 1),
      visibility 0s linear 0s;
  }

  /* Inspector — shallow bottom sheet when open or has selection */
  .composer-layout.layout-tablet > .selected-inspector#selectedInspector,
  .composer-layout.layout-tablet > .selected-inspector[data-studio-panel="adjust"] {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    top: auto;
    width: 100%;
    max-height: min(72vh, 640px);
    margin: 0;
    z-index: 65;
    display: flex !important;
    flex-direction: column;
    min-height: 0;
    overflow: hidden;
    border-radius: var(--radius) var(--radius) 0 0;
    border: 1px solid var(--border);
    border-bottom: none;
    box-shadow: 0 -8px 28px rgba(0, 0, 0, 0.18);
    background: var(--panel-bg);
    transform: translateY(110%);
    visibility: hidden;
    transition:
      transform 0.28s cubic-bezier(0.22, 1, 0.36, 1),
      visibility 0s linear 0.28s,
      max-height 0.25s ease;
  }

  .composer-layout.layout-tablet.inspector-open > .selected-inspector,
  .composer-layout.layout-tablet.studio-panel-open-adjust > .selected-inspector,
  .composer-layout.layout-tablet.studio-panel-open-adjust > .selected-inspector#selectedInspector {
    transform: translateY(0);
    visibility: visible;
    overflow-x: hidden !important;
    overflow-y: auto !important;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    transition:
      transform 0.28s cubic-bezier(0.22, 1, 0.36, 1),
      visibility 0s linear 0s,
      max-height 0.25s ease;
  }

  .composer-layout.layout-tablet .selected-inspector .adjust-handle {
    display: flex;
  }

  .composer-layout.layout-tablet .selected-inspector.mode-sprite,
  .composer-layout.layout-tablet .selected-inspector.mode-batch {
    overflow-x: hidden !important;
    overflow-y: auto !important;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
  }

  .composer-layout.layout-tablet .selected-inspector.mode-sprite #inspectorBody:not([hidden]),
  .composer-layout.layout-tablet .selected-inspector.mode-batch #inspectorBody:not([hidden]) {
    flex: 0 0 auto !important;
    max-height: none !important;
    overflow: visible !important;
    padding-bottom: 16px;
  }

  .composer-layout.layout-tablet .selected-inspector.adjust-collapsed {
    max-height: min(22vh, 160px);
  }

  .composer-layout.layout-tablet .selected-inspector.adjust-collapsed .inspector-body .inspector-advanced,
  .composer-layout.layout-tablet .selected-inspector.adjust-collapsed .inspector-colour,
  .composer-layout.layout-tablet .selected-inspector.adjust-collapsed .inspector-opacity-block {
    display: none;
  }

  /* Touch targets ≥44px */
  .composer-layout.layout-tablet .compose-toolbar .btn,
  .composer-layout.layout-tablet .compose-toolbar button,
  .composer-layout.layout-tablet .compose-toolbar .compose-toolbar-btn,
  .composer-layout.layout-tablet .selected-inspector .btn,
  .composer-layout.layout-tablet .selected-inspector button,
  .composer-layout.layout-tablet .selected-inspector .inspector-actions .btn {
    min-height: 44px;
    min-width: 44px;
    padding-left: 12px;
    padding-right: 12px;
  }

  .composer-layout.layout-tablet .compose-canvas-chrome {
    padding: 8px 8px 6px;
  }

  .composer-layout.layout-tablet .compose-toolbar {
    gap: 6px;
  }

  .composer-layout.layout-tablet .compose-popover {
    max-height: min(70vh, calc(100dvh - var(--studio-chrome-top, 96px) - 80px));
    z-index: 85;
  }

  /* Tablet compose dock — Art · Canvas · Project (same as phone) */
  body.studio-tool-page:has(.composer-layout.layout-tablet) {
    padding-bottom: calc(var(--studio-dock-height, 108px) + var(--studio-safe-bottom, env(safe-area-inset-bottom, 0px)));
  }

  body:has(.composer-layout.layout-tablet) .studio-bottom-dock.composer-dock {
    display: flex;
    position: fixed;
    left: 0;
    right: 0;
    bottom: calc(var(--studio-tool-tabs-height, 56px) + var(--studio-safe-bottom, env(safe-area-inset-bottom, 0px)));
    z-index: 91;
    gap: 4px;
    padding: 8px 10px 6px;
    background: var(--panel-bg);
    border-top: 1px solid var(--border);
    box-shadow: none;
  }

  body:has(.composer-layout.layout-tablet) .studio-bottom-dock.composer-dock .studio-dock-btn {
    flex: 1 1 0;
    min-height: 48px;
    flex-direction: column;
    gap: 2px;
    font-size: 0.72rem;
    font-weight: 650;
  }

  .composer-layout.layout-tablet > [data-studio-panel="canvas"],
  .composer-layout.layout-tablet > [data-studio-panel="project"] {
    display: none !important;
    position: fixed;
    left: 0;
    right: 0;
    bottom: calc(var(--studio-dock-height, 64px) + var(--studio-safe-bottom, env(safe-area-inset-bottom, 0px)));
    top: auto;
    width: 100%;
    max-height: min(
      78vh,
      calc(100dvh - var(--studio-chrome-top, 96px) - var(--studio-dock-height, 64px) - var(--studio-safe-bottom, env(safe-area-inset-bottom, 0px)))
    );
    margin: 0;
    z-index: 70;
    flex-direction: column;
    border-radius: var(--radius) var(--radius) 0 0;
    border: 1px solid var(--border);
    border-bottom: none;
    box-shadow: var(--shadow-soft);
    background: var(--panel-bg);
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
  }

  .composer-layout.layout-tablet.studio-panel-open-canvas > [data-studio-panel="canvas"],
  .composer-layout.layout-tablet.studio-panel-open-project > [data-studio-panel="project"] {
    display: flex !important;
  }

  .composer-layout.layout-tablet .studio-bottom-dock {
    display: none !important;
  }

  body:has(.composer-layout.layout-tablet) .studio-bottom-dock.composer-dock {
    display: flex !important;
  }
}


/* ==========================================================================
   Phone — max-width 640px · .layout-phone (+ studio-mobile patterns)
   Canvas-first; dock Sprites | Layers | More; one sheet at a time
   ========================================================================== */

@media (max-width: 640px) {
  .composer-layout.layout-phone,
  .splitter-layout.composer-layout.layout-phone,
  .composer-layout.layout-phone.studio-mobile-layout {
    display: grid !important;
    grid-template-columns: 1fr !important;
    grid-template-rows: minmax(0, 1fr) !important;
    grid-template-areas: none !important;
    position: relative;
    padding: 8px !important;
    padding-bottom: 8px !important;
    height: auto !important;
    max-height: none !important;
    min-height: 0 !important;
    overflow: hidden !important;
  }

  .composer-layout.layout-phone > .composer-work-panel,
  .composer-layout.layout-phone > .composer-pane {
    display: flex !important;
    flex-direction: column;
    min-height: 0;
    flex: 1 1 auto;
    max-height: none;
    grid-area: auto !important;
    position: relative;
    overflow: hidden;
    z-index: 1;
  }

  /* Hide side panels until opened via dock / studio-panel-open-* */
  .composer-layout.layout-phone > .sprites-panel,
  .composer-layout.layout-phone > [data-studio-panel="sprites"],
  .composer-layout.layout-phone > #composeLibraryMount,
  .composer-layout.layout-phone > .layers-panel[data-studio-panel="layers"],
  .composer-layout.layout-phone > .more-panel[data-studio-panel="more"],
  .composer-layout.layout-phone > [data-studio-panel="canvas"],
  .composer-layout.layout-phone > [data-studio-panel="project"],
  .composer-layout.layout-phone > .selected-inspector#selectedInspector,
  .composer-layout.layout-phone > .selected-inspector[data-studio-panel="adjust"] {
    display: none !important;
    position: fixed;
    left: 0;
    right: 0;
    bottom: calc(var(--studio-dock-height, 64px) + var(--studio-safe-bottom, env(safe-area-inset-bottom, 0px)));
    top: auto;
    width: 100%;
    max-height: min(
      85vh,
      calc(
        100dvh - var(--studio-dock-height, 64px) - var(--studio-chrome-top, 96px) -
          var(--studio-safe-bottom, env(safe-area-inset-bottom, 0px))
      )
    );
    margin: 0;
    z-index: 70;
    flex-direction: column;
    border-radius: var(--radius) var(--radius) 0 0;
    border: 1px solid var(--border);
    border-bottom: none;
    box-shadow: var(--shadow-soft);
    background: var(--panel-bg);
    overflow: hidden;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
  }

  .composer-layout.layout-phone.studio-panel-open-sprites > .sprites-panel #spritePalette,
  .composer-layout.layout-phone.studio-panel-open-sprites > [data-studio-panel="sprites"] #spritePalette,
  .composer-layout.layout-phone.studio-panel-open-sprites > #composeLibraryMount #spritePalette {
    flex: 1 1 auto;
    min-height: 0;
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
  }

  .composer-layout.layout-phone.studio-panel-open-sprites > .sprites-panel,
  .composer-layout.layout-phone.studio-panel-open-sprites > [data-studio-panel="sprites"],
  .composer-layout.layout-phone.studio-panel-open-sprites > #composeLibraryMount,
  .composer-layout.layout-phone.studio-panel-open-layers > .layers-panel,
  .composer-layout.layout-phone.studio-panel-open-layers > [data-studio-panel="layers"],
  .composer-layout.layout-phone.studio-panel-open-more > .more-panel,
  .composer-layout.layout-phone.studio-panel-open-more > [data-studio-panel="more"],
  .composer-layout.layout-phone.studio-panel-open-canvas > [data-studio-panel="canvas"],
  .composer-layout.layout-phone.studio-panel-open-project > [data-studio-panel="project"],
  /* Include #selectedInspector — hide rule uses the id and otherwise wins on specificity */
  .composer-layout.layout-phone.studio-panel-open-adjust > .selected-inspector#selectedInspector,
  .composer-layout.layout-phone.studio-panel-open-adjust > .selected-inspector[data-studio-panel="adjust"],
  .composer-layout.layout-phone.studio-panel-open-adjust > [data-studio-panel="adjust"] {
    display: flex !important;
  }

  /* Options sheet must scroll — overflow:hidden + id was clipping Opacity / colour / actions */
  .composer-layout.layout-phone.studio-panel-open-adjust > .selected-inspector#selectedInspector,
  .composer-layout.layout-phone.studio-panel-open-adjust > .selected-inspector[data-studio-panel="adjust"] {
    overflow-x: hidden !important;
    overflow-y: auto !important;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
  }

  .composer-layout.layout-phone.studio-panel-open-adjust > .selected-inspector#selectedInspector:not(.adjust-collapsed),
  .composer-layout.layout-phone.studio-panel-open-adjust > .selected-inspector[data-studio-panel="adjust"]:not(.adjust-collapsed) {
    min-height: min(
      72vh,
      calc(
        100dvh - var(--studio-dock-height, 64px) - var(--studio-chrome-top, 96px) -
          var(--studio-safe-bottom, env(safe-area-inset-bottom, 0px))
      )
    );
  }

  .composer-layout.layout-phone.studio-panel-open-adjust > .selected-inspector.mode-arrange .adjust-handle {
    display: none;
  }

  .composer-layout.layout-phone.studio-panel-open-adjust > .selected-inspector .drawer-close,
  .composer-layout.layout-phone.studio-panel-open-adjust > .selected-inspector .studio-drawer-close,
  .composer-layout.layout-phone.studio-panel-open-adjust > .selected-inspector .adjust-handle,
  .composer-layout.layout-phone.studio-panel-open-adjust > .selected-inspector #inspectorPanelHead {
    position: sticky;
    top: 0;
    z-index: 4;
    background: var(--panel-bg);
  }

  .composer-layout.layout-phone.studio-panel-open-adjust > .selected-inspector .drawer-close,
  .composer-layout.layout-phone.studio-panel-open-adjust > .selected-inspector .studio-drawer-close {
    top: 0;
  }

  .composer-layout.layout-phone.studio-panel-open-adjust > .selected-inspector .adjust-handle {
    top: 0;
  }

  /* Natural-height children so the sheet (not nested panes) is the scrollport */
  .composer-layout.layout-phone.studio-panel-open-adjust > .selected-inspector.mode-sprite #inspectorBody:not([hidden]),
  .composer-layout.layout-phone.studio-panel-open-adjust > .selected-inspector.mode-batch #inspectorBody:not([hidden]),
  .composer-layout.layout-phone.studio-panel-open-adjust > .selected-inspector.mode-arrange .inspector-layer-panel:not([hidden]),
  .composer-layout.layout-phone.studio-panel-open-adjust > .selected-inspector.mode-bg #inspectorBgBody:not([hidden]) {
    flex: 1 1 auto !important;
    max-height: none !important;
    min-height: 0 !important;
    overflow: hidden !important;
    display: flex !important;
    flex-direction: column;
  }

  .composer-layout.layout-phone.studio-panel-open-adjust > .selected-inspector.mode-arrange .layer-panel-scroll {
    flex: 1 1 auto;
    min-height: 0;
    overflow-x: hidden;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .composer-layout.layout-phone.studio-panel-open-adjust > .selected-inspector.mode-sprite #inspectorBody:not([hidden]),
  .composer-layout.layout-phone.studio-panel-open-adjust > .selected-inspector.mode-batch #inspectorBody:not([hidden]) {
    padding-bottom: 16px;
  }

  /* Adjust sheet — collapsible height */
  .composer-layout.layout-phone > .selected-inspector .adjust-handle {
    display: flex;
  }

  .composer-layout.layout-phone > .selected-inspector.adjust-collapsed {
    max-height: min(
      28vh,
      calc(
        100dvh - var(--studio-dock-height, 64px) - var(--studio-chrome-top, 96px) -
          var(--studio-safe-bottom, env(safe-area-inset-bottom, 0px))
      )
    );
  }

  .composer-layout.layout-phone > .selected-inspector.adjust-collapsed .inspector-body .inspector-advanced,
  .composer-layout.layout-phone > .selected-inspector.adjust-collapsed .inspector-colour,
  .composer-layout.layout-phone > .selected-inspector.adjust-collapsed .inspector-opacity-block,
  .composer-layout.layout-phone > .selected-inspector.adjust-collapsed .inspector-extra {
    display: none;
  }

  /* Compact docked toolbar on phone */
  .composer-layout.layout-phone .compose-canvas-chrome {
    padding: 8px 8px 6px;
    align-items: stretch;
  }

  .composer-layout.layout-phone .compose-toolbar {
    width: 100%;
    max-width: none;
    justify-content: flex-start;
    gap: 4px 6px;
    padding: 6px 8px;
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }

  .composer-layout.layout-phone .compose-toolbar .btn,
  .composer-layout.layout-phone .compose-toolbar button,
  .composer-layout.layout-phone .compose-toolbar .compose-toolbar-btn,
  .composer-layout.layout-phone .selected-inspector .btn,
  .composer-layout.layout-phone .selected-inspector button,
  .composer-layout.layout-phone .selected-inspector .inspector-actions .btn {
    min-height: 44px;
    min-width: 44px;
    flex: 0 0 auto;
    padding-left: 12px;
    padding-right: 12px;
  }

  .composer-layout.layout-phone .compose-popover {
    position: fixed;
    left: 8px;
    right: 8px;
    top: auto;
    bottom: calc(var(--studio-dock-height, 54px) + var(--studio-safe-bottom, env(safe-area-inset-bottom, 0px)) + 12px);
    transform: none;
    width: auto;
    max-width: none;
    min-width: 0;
    max-height: 70vh;
    z-index: 85;
  }

  .composer-layout.layout-phone .compose-popover[hidden] {
    display: none !important;
  }

  /* Dock: Art · Canvas · Project — only on Make Tile (never bleed from extract idle state) */
  body[data-studio-step="compose"]:has(.composer-layout.layout-phone) .studio-bottom-dock.composer-dock,
  .composer-layout.layout-phone ~ .studio-bottom-dock.composer-dock {
    display: flex !important;
  }

  body[data-studio-step="compose"]:has(.composer-layout.layout-phone) .studio-bottom-dock .studio-dock-btn,
  .composer-layout.layout-phone ~ .studio-bottom-dock.composer-dock .studio-dock-btn {
    min-height: 44px;
  }

  /* Keep mode body visibility consistent when Adjust sheet opens */
  .composer-layout.layout-phone .selected-inspector .inspector-empty[hidden] {
    display: none !important;
  }

  .composer-layout.layout-phone .selected-inspector .inspector-body[hidden] {
    display: none !important;
  }

  .composer-layout.layout-phone .selected-inspector .inspector-body:not([hidden]) {
    display: flex;
  }
}


/* ==========================================================================
   Reduced motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  .composer-layout.layout-tablet > .sprites-panel,
  .composer-layout.layout-tablet > #composeLibraryMount,
  .composer-layout.layout-tablet > .layers-panel,
  .composer-layout.layout-tablet > .more-panel,
  .composer-layout.layout-tablet > .selected-inspector,
  .compose-toolbar .btn,
  .compose-toolbar button {
    transition: none !important;
  }
}

/* ==========================================================================
   Make Tile redesign — desktop Artwork / Layers / empty start
   (Header chrome stays shared with Extract / Preview via app.css —
    do not hide .studio-stepper here.)
   ========================================================================== */

.artwork-add-wrap {
  position: relative;
  margin: 0 0 10px;
}

.artwork-add-btn {
  width: 100%;
  justify-content: center;
}

.artwork-add-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  z-index: 40;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 6px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel-bg);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
}

.artwork-add-menu[hidden] {
  display: none !important;
}

.artwork-add-item {
  appearance: none;
  display: block;
  width: 100%;
  margin: 0;
  padding: 9px 10px;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--cream);
  font-family: var(--font-ui);
  font-size: 0.84rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  box-sizing: border-box;
}

.artwork-add-item:hover {
  background: rgba(255, 255, 255, 0.08);
}

label.artwork-add-item {
  cursor: pointer;
}

.composer-layout.layout-desktop .compose-toolbar-mobile-only,
.composer-layout.layout-desktop .compose-toolbar-legacy-layers {
  display: none !important;
}

.composer-layout.layout-desktop .compose-toolbar-sep.compose-toolbar-mobile-only {
  display: none !important;
}

.compose-inspector-nav {
  display: none !important;
}

.compose-inspector-crumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  flex: 0 0 auto;
  padding: 10px 12px 8px;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-ui);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--cream);
}

.compose-inspector-crumb[hidden] {
  display: none !important;
}

.compose-crumb-seg {
  appearance: none;
  border: 0;
  background: transparent;
  padding: 0;
  margin: 0;
  font: inherit;
  font-weight: 700;
  color: var(--accent);
  cursor: pointer;
}

.compose-crumb-seg:hover:not(:disabled) {
  text-decoration: underline;
}

.compose-crumb-seg:disabled,
.compose-crumb-seg.is-current {
  color: var(--cream);
  cursor: default;
  pointer-events: none;
  text-decoration: none;
}

.compose-crumb-sep {
  color: var(--muted);
  font-weight: 600;
}

.compose-crumb-current {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--cream);
}

/* Exclusive screens: only one of tile / list / layer detail / sprite detail */
.selected-inspector.mode-layers-menu .inspector-layer-panel,
.selected-inspector.mode-layers-menu .inspector-body,
.selected-inspector.mode-layers-menu .inspector-bg-body,
.selected-inspector.mode-layers-menu .inspector-colour-panel,
.selected-inspector.mode-layers-menu #inspectorPanelHead,
.selected-inspector.mode-tile-menu .inspector-layer-panel,
.selected-inspector.mode-tile-menu .inspector-body,
.selected-inspector.mode-tile-menu .inspector-bg-body,
.selected-inspector.mode-tile-menu .inspector-colour-panel,
.selected-inspector.mode-tile-menu #inspectorPanelHead,
.selected-inspector.mode-tile-menu .compose-layers-stack {
  display: none !important;
}

.selected-inspector.mode-layers-menu .compose-tile-panel,
.selected-inspector:not(.mode-tile-menu) .compose-tile-panel {
  display: none !important;
}

.selected-inspector.mode-tile-menu .compose-tile-panel {
  display: flex !important;
  flex: 1 1 auto;
  flex-direction: column;
  gap: 12px;
  min-height: 0;
  padding: 14px 14px 16px;
  overflow: auto;
}

.selected-inspector.mode-layers-menu .compose-layers-stack {
  display: flex !important;
  flex: 1 1 auto;
  min-height: 0;
  border-bottom: 0;
}

.selected-inspector:not(.mode-layers-menu) .compose-layers-stack,
.selected-inspector.mode-sprite .compose-layers-stack,
.selected-inspector.mode-arrange .compose-layers-stack,
.selected-inspector.mode-bg .compose-layers-stack {
  display: none !important;
}

.compose-layers-stack {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px 12px 10px;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel-bg) 92%, #000);
}

.compose-layers-stack[hidden] {
  display: none !important;
}

.selected-inspector.mode-layers-menu .compose-layers-list {
  max-height: none;
  flex: 1 1 auto;
}

.compose-crumb-seg {
  appearance: none;
  border: 0;
  background: transparent;
  padding: 0;
  margin: 0;
  font: inherit;
  font-weight: 700;
  color: var(--accent);
  cursor: pointer;
}

.compose-crumb-seg:hover:not(:disabled) {
  text-decoration: underline;
}

.compose-crumb-seg:disabled {
  color: var(--cream);
  cursor: default;
  opacity: 1;
}

.compose-crumb-seg.is-current {
  color: var(--cream);
  cursor: default;
  pointer-events: none;
}

.compose-crumb-sep {
  color: var(--muted);
  font-weight: 600;
}

.compose-crumb-current {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--cream);
}

.compose-layers-stack {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px 12px 10px;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel-bg) 92%, #000);
}

.compose-layers-stack[hidden] {
  display: none !important;
}

.compose-tile-panel {
  display: none;
  box-sizing: border-box;
  background: color-mix(in srgb, var(--panel-bg) 92%, #000);
}

.compose-tile-panel[hidden] {
  display: none !important;
}

.compose-tile-panel-title {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--cream);
}

.compose-tile-panel-note {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 0.82rem;
  line-height: 1.4;
  color: var(--muted);
}

.compose-tile-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: var(--font-ui);
}

.compose-tile-field-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.compose-tile-field input[type="text"],
.compose-tile-field input[type="number"] {
  width: 100%;
  box-sizing: border-box;
  margin: 0;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface, var(--panel-bg));
  color: var(--cream);
  font-family: var(--font-ui);
  font-size: 0.95rem;
}

.compose-tile-field input[type="text"]:focus,
.compose-tile-field input[type="number"]:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
}

.compose-tile-size-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.compose-tile-size-row input[type="number"] {
  flex: 1 1 auto;
  min-width: 0;
}

.compose-tile-size-unit {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 0.85rem;
}

.compose-tile-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 8px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.compose-tile-section-title {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.compose-tile-checks {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 16px;
}

.compose-tile-field select {
  width: 100%;
  box-sizing: border-box;
  margin: 0;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface, var(--panel-bg));
  color: var(--cream);
  font-family: var(--font-ui);
  font-size: 0.95rem;
}

.selected-inspector.mode-sprite .compose-layers-stack {
  display: none !important;
}

/* Layer arrange / transform / colour only at Tile level (mode-arrange) — already gated in JS */

.compose-layers-head {
  display: flex;
  align-items: center;
  justify-content: stretch;
  gap: 8px;
}

.compose-layers-title {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.compose-add-layer-btn {
  flex: 1 1 auto;
  width: 100%;
  justify-content: center;
}

.compose-layers-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 220px;
  overflow: auto;
}

.compose-layer-add-row {
  appearance: none;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  margin: 2px 0 0;
  padding: 8px 10px;
  border: 1px dashed color-mix(in srgb, var(--border) 80%, transparent);
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  box-sizing: border-box;
}

.compose-layer-add-row:hover:not(:disabled) {
  color: var(--cream);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.compose-layer-add-row:disabled {
  opacity: 0.4;
  cursor: default;
}

.compose-layer-row {
  appearance: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  width: 100%;
  margin: 0;
  padding: 6px 8px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--cream);
  font-family: var(--font-ui);
  text-align: left;
  cursor: grab;
  box-sizing: border-box;
}

.compose-layer-row.is-dragging {
  opacity: 0.45;
}

.compose-layer-row.is-drop-target {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

.compose-layer-drag {
  flex: 0 0 auto;
  width: 10px;
  height: 16px;
  border-radius: 2px;
  background:
    repeating-linear-gradient(
      to bottom,
      var(--muted) 0 2px,
      transparent 2px 4px
    );
  opacity: 0.55;
}

.compose-layer-select {
  appearance: none;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  padding: 0;
  min-width: 0;
  flex: 1 1 auto;
}

.compose-layer-move {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  margin: 0;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: var(--surface, var(--panel-bg));
  color: var(--muted);
  font-size: 0.65rem;
  line-height: 1;
  cursor: pointer;
}

.compose-layer-move:hover:not(:disabled) {
  color: var(--cream);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
}

.compose-layer-move:disabled {
  opacity: 0.35;
  cursor: default;
}

.compose-layer-row:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border);
}

.compose-layer-row.is-active {
  background: color-mix(in srgb, var(--accent) 16%, transparent);
  border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
}

.compose-layer-row.is-hidden-layer {
  opacity: 0.55;
}

.compose-layer-row-main {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.compose-layer-row-name {
  font-size: 0.9rem;
  font-weight: 700;
}

.compose-layer-row-count {
  font-size: 0.72rem;
  color: var(--muted);
}

.compose-layer-row-actions {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  flex: 0 0 auto;
}

.compose-layer-delete {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  margin: 0;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 5px;
  background: transparent;
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1;
  cursor: pointer;
}

.compose-layer-delete:hover:not(:disabled) {
  color: #f0a0a0;
  border-color: color-mix(in srgb, #c06060 45%, var(--border));
  background: color-mix(in srgb, #c06060 12%, transparent);
}

.compose-layer-delete:disabled {
  opacity: 0.3;
  cursor: default;
}

.compose-layer-lock {
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  color: var(--muted);
  background: transparent;
}

.compose-layer-lock::before {
  content: "";
  width: 12px;
  height: 12px;
  border: 1.5px solid currentColor;
  border-radius: 3px 3px 2px 2px;
  box-sizing: border-box;
  position: relative;
  background: transparent;
}

.compose-layer-lock::after {
  content: "";
  position: absolute;
  top: 5px;
  width: 7px;
  height: 5px;
  border: 1.5px solid currentColor;
  border-bottom: 0;
  border-radius: 6px 6px 0 0;
  opacity: 0.85;
}

.compose-layer-lock {
  position: relative;
}

.compose-layer-lock.is-locked {
  color: var(--accent);
  background: rgba(255, 255, 255, 0.06);
}

.compose-layer-lock.is-locked::before {
  background: color-mix(in srgb, currentColor 25%, transparent);
}

.selected-inspector {
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.selected-inspector .inspector-layer-panel,
.selected-inspector .inspector-body,
.selected-inspector .inspector-bg-body {
  flex: 1 1 auto;
  min-height: 0;
}

.sprite-mode-crumb {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0 0 10px;
  font-family: var(--font-ui);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--cream);
}

.sprite-mode-crumb-layer {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--accent);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  padding: 0;
}

.sprite-mode-crumb-layer:hover {
  text-decoration: underline;
}

.sprite-mode-crumb-sep {
  color: var(--muted);
}

.sprite-mode-crumb-name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.inspector-pos-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 10px;
}

.inspector-pos-row .toolbar-field {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--muted);
}

.inspector-pos-row input[type="number"] {
  width: 100%;
  min-width: 0;
}

.arrange-more-options {
  margin-top: 4px;
  border-top: 1px solid var(--border);
  padding-top: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.arrange-more-options > summary {
  display: none;
}

.arrange-more-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 0;
}

.arrange-check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.84rem;
  color: var(--cream);
  cursor: pointer;
}

.tile-editor-wrap {
  position: relative;
}

.compose-empty-start {
  position: absolute;
  inset: 0;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  pointer-events: none;
  background:
    radial-gradient(ellipse at center, rgba(18, 24, 32, 0.55), rgba(18, 24, 32, 0.18) 55%, transparent 70%);
}

.compose-empty-start[hidden] {
  display: none !important;
}

.compose-empty-start-card {
  pointer-events: auto;
  max-width: 22rem;
  text-align: center;
  padding: 28px 24px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel-bg) 92%, #000);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

.compose-empty-start-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 600;
  color: var(--cream);
}

.compose-empty-start-copy {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

.compose-empty-start-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 14px;
}

.compose-empty-start-link {
  appearance: none;
  display: inline;
  margin: 0;
  padding: 0;
  border: none;
  background: none;
  color: var(--accent);
  font-family: inherit;
  font-size: 0.84rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

.compose-empty-start-link:hover {
  text-decoration: underline;
}

.tile-editor-wrap.is-empty-start #tileEditor {
  opacity: 0.35;
}

@media (max-width: 1024px) {
  .composer-layout.layout-tablet .compose-toolbar-legacy-layers,
  .composer-layout.layout-phone .compose-toolbar-legacy-layers {
    display: none !important;
  }
}