/* App shell: no page scroll — only panels / canvases scroll inside. */
html:has(.splitter-layout),
body:has(.splitter-layout),
html:has(.background-layout),
body:has(.background-layout),
html:has(.clean-layout),
body:has(.clean-layout) {
  height: 100%;
  max-height: 100dvh;
  overflow: hidden;
}

body:has(.splitter-layout),
body:has(.background-layout),
body:has(.clean-layout) {
  display: flex;
  flex-direction: column;
}

.splitter-layout {
  display: grid;
  grid-template-columns: 268px 1fr 280px;
  grid-template-rows: minmax(0, 1fr);
  gap: 12px;
  flex: 1 1 auto;
  min-height: 0;
  height: auto;
  max-height: none;
  overflow: hidden;
  transition: grid-template-columns 0.22s ease;
  padding: 12px;
  background: var(--navy);
}

.splitter-layout.splitter-page {
  grid-template-columns: 268px 1fr;
}

/* ── Sprite Clean tool ───────────────────────────────────────────────────── */
.clean-layout {
  display: grid;
  grid-template-columns: minmax(220px, 280px) 1fr;
  grid-template-rows: minmax(0, 1fr);
  gap: 12px;
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
  padding: 12px;
  background: var(--navy);
}

.clean-side {
  border-right: none;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

.clean-side-meta {
  display: flex;
  flex-direction: column;
  min-height: 0;
  flex: 1;
  margin-top: 4px;
}

.clean-palette-head {
  padding-top: 8px;
}

.clean-side .sprite-palette {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 0 12px 16px;
}

.clean-work {
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
  overflow: hidden;
  border-right: none;
}

.clean-cleanup-pane {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

.clean-cleanup-pane .cleanup-wrap {
  flex: 1;
}

@media (max-width: 700px) {
  .clean-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto minmax(280px, 1fr);
    overflow: auto;
  }
}

/* ── Easy Sprite Extractor shell ─────────────────────────────────────────── */
body[data-extractor-mode="easy"] .splitter-layout.splitter-page {
  grid-template-columns: minmax(220px, 280px) 1fr minmax(240px, 300px);
  grid-template-areas: "easy-left work easy-right";
}

body[data-extractor-mode="advanced"] .splitter-layout.splitter-page {
  grid-template-columns: 268px 1fr;
  grid-template-areas: "sprites work";
}

.splitter-page .extractor-easy-left { grid-area: easy-left; }
.splitter-page .sprites-panel { grid-area: sprites; }
.splitter-page .extractor-work { grid-area: work; }
.splitter-page .extractor-easy-right {
  grid-area: easy-right;
  border-right: none;
  border-left: none;
}

body[data-extractor-mode="easy"] .extractor-advanced-only { display: none !important; }
body[data-extractor-mode="advanced"] .extractor-easy-only { display: none !important; }

body[data-extractor-mode="advanced"] .sprites-panel {
  display: flex;
}

.extractor-title-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 10px;
  padding: 18px 18px 0;
}

.extractor-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: none;
  color: var(--cream);
}

.extractor-status-pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 11px;
  border-radius: 999px;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: none;
  background: var(--success-bg);
  border: 1px solid var(--success-border);
  color: var(--success);
}

.extractor-status-pill.is-weak {
  background: var(--attention-bg);
  border-color: var(--attention-border);
  color: var(--attention);
}

.extractor-blurb {
  margin: 8px 18px 14px;
  font-family: var(--font-ui);
  font-size: 0.88rem;
  line-height: 1.45;
  color: var(--muted);
}

.extractor-dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 0 18px 14px;
  padding: 28px 16px;
  border: 1.5px dashed var(--accent);
  border-radius: var(--radius);
  background: var(--card-bg);
  cursor: pointer;
  text-align: center;
  transition: border-color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}

.extractor-dropzone:hover,
.extractor-dropzone.is-dragover {
  border-color: var(--accent-strong);
  background: var(--ghost-hover-bg);
  box-shadow: inset 0 0 0 1px rgba(154, 123, 82, 0.12);
}

.extractor-dropzone-icon { color: var(--accent); opacity: 0.9; }
.extractor-dropzone-title {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--cream);
}
.extractor-dropzone-meta {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.extractor-sheet-preview {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
  margin: 0 18px 14px;
}

.extractor-sheet-preview img {
  display: block;
  width: 100%;
  max-height: 140px;
  object-fit: contain;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: repeating-conic-gradient(var(--canvas-check-a) 0% 25%, var(--canvas-check-b) 0% 50%) 0 0 / 12px 12px;
}

.extractor-tips.is-highlight {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(154, 123, 82, 0.2);
}

.extractor-tips-heading {
  margin: 0 0 8px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: none;
  color: var(--accent);
  font-family: var(--font-ui);
}

.extractor-tips ul {
  margin: 0;
  padding-left: 1.1rem;
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--muted);
}

.extractor-stuck {
  margin: auto 18px 18px;
  padding-top: 8px;
  font-family: var(--font-ui);
  font-size: 0.8rem;
}

button.linkish,
.linkish {
  background: none;
  border: none;
  padding: 0;
  color: var(--accent);
  font: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
  cursor: pointer;
}

button.linkish:hover,
.linkish:hover { color: var(--cream); }

.extractor-work-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px 0;
  flex-shrink: 0;
}

.extractor-work-title-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.extractor-work-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--cream);
}

.extractor-easy-zoombar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin: 10px 16px 0;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--card-bg);
  flex-shrink: 0;
}

.extractor-work-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.extractor-easy-right {
  padding: 0;
}

.extractor-right-panel {
  display: flex;
  flex-direction: column;
  min-height: 0;
  flex: 1;
  padding: 18px;
  overflow: hidden;
}

.extractor-waiting {
  margin: auto 0;
  text-align: center;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.45;
}

.extractor-results-ok {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 0 0 12px;
  font-family: var(--font-ui);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--cream);
  line-height: 1.35;
}

.extractor-check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--success-bg);
  border: 1px solid var(--success-border);
  color: var(--success);
  font-size: 0.72rem;
  font-weight: 700;
}

.extractor-weak-nudge {
  margin: 0 0 12px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--attention-border);
  background: var(--attention-bg);
  font-family: var(--font-ui);
  font-size: 0.82rem;
  line-height: 1.45;
  color: var(--cream);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.extractor-weak-nudge strong { color: var(--attention); }

.extractor-results-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--muted);
}

.extractor-results-grid {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  align-content: start;
  padding-bottom: 8px;
}

.extractor-result-thumb {
  position: relative;
  aspect-ratio: 1;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: repeating-conic-gradient(var(--canvas-check-a) 0% 25%, var(--canvas-check-b) 0% 50%) 0 0 / 10px 10px;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.extractor-result-thumb.is-selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(154, 123, 82, 0.25);
}

.extractor-result-thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.extractor-result-thumb .num {
  position: absolute;
  top: 4px;
  left: 4px;
  padding: 1px 5px;
  border-radius: 3px;
  font-family: var(--font-ui);
  font-size: 0.58rem;
  background: var(--chip-bg);
  color: var(--muted);
}

.extractor-continue-wrap {
  flex-shrink: 0;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  margin-top: 4px;
}

.extractor-continue-btn {
  width: 100%;
  justify-content: center;
  min-height: 44px;
}

.extractor-choice-title {
  margin: 12px 0 6px;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--cream);
}

.extractor-choice-blurb {
  margin: 0 0 16px;
  font-family: var(--font-ui);
  font-size: 0.88rem;
  line-height: 1.45;
  color: var(--muted);
}

.extractor-choice-btn {
  width: 100%;
  justify-content: center;
  min-height: 44px;
  margin-bottom: 10px;
}

.extractor-back {
  align-self: flex-start;
  margin-bottom: 4px;
  font-family: var(--font-ui);
  font-size: 0.8rem;
}

@media (max-width: 1100px) {
  body[data-extractor-mode="easy"] .splitter-layout.splitter-page {
    grid-template-columns: minmax(200px, 240px) 1fr minmax(220px, 260px);
  }
}


.splitter-layout.preview-flat {
  grid-template-columns: 268px 1fr 40px;
}

.panel,
.work-panel {
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.preview-panel { border-right: none; }

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  gap: 8px;
}

.panel-flat-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  flex-shrink: 0;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
}

.panel-flat-btn:hover {
  border-color: var(--pink);
  color: var(--cream);
}

.panel-flat-btn svg {
  width: 14px;
  height: 14px;
}

.preview-flat-open {
  display: none;
  flex: 1 1 auto;
  align-self: stretch;
  width: 100%;
  min-height: 0;
  max-height: 100%;
  margin: 0;
  padding: 12px 0;
  border: none;
  border-radius: 0;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-family: inherit;
  overflow: hidden;
}

.preview-flat-open:hover {
  color: var(--cream);
  background: rgba(255, 255, 255, 0.04);
}

.splitter-layout.preview-flat .preview-panel .panel-head,
.splitter-layout.preview-flat .preview-panel .tile-preview,
.splitter-layout.preview-flat .preview-panel .preview-controls {
  display: none;
}

.splitter-layout.preview-flat .preview-flat-open {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── Tool help: "?" triggers + slide-out help panel ──────────────────────── */
.tool-help-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  margin-left: 6px;
  padding: 0;
  flex-shrink: 0;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: transparent;
  color: var(--accent);
  font-size: 0.62rem;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  vertical-align: middle;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.tool-help-btn:hover,
.tool-help-btn:focus-visible {
  border-color: var(--pink);
  color: var(--cream);
  background: rgba(255, 105, 180, 0.16);
  outline: none;
}

/* Help panel and preview share the right column and slide past each other:
   one slides out to the right as the other slides in. */
.help-panel {
  grid-column: 3;
  grid-row: 1;
  border-right: none;
  border-left: 1px solid var(--border);
  z-index: 6;
}

.preview-panel,
.help-panel {
  grid-column: 3;
  grid-row: 1;
  transition: transform 0.28s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}

/* Closed: guide parked off-screen to the right, preview in view. */
.help-panel {
  transform: translateX(105%);
  visibility: hidden;
  transition: transform 0.28s cubic-bezier(0.22, 1, 0.36, 1), visibility 0s linear 0.28s;
}

/* Open: preview slides out right, guide slides into view. */
.splitter-layout.help-open {
  grid-template-columns: 268px 1fr 340px;
}

.splitter-layout.help-open .preview-panel {
  transform: translateX(105%);
}

.splitter-layout.help-open .help-panel {
  transform: translateX(0);
  visibility: visible;
  transition: transform 0.28s cubic-bezier(0.22, 1, 0.36, 1), visibility 0s linear 0s;
}

/* Tools / Preview switch + drawer chrome — only used on Tile Composer. */
.compose-view-switch { display: none; }
.drawer-close { display: none; }
.compose-drawer-backdrop { display: none; }

/* Tile Composer always uses drawers for tools / preview / help so the canvas
   keeps the center column — including on short, wide viewports where in-flow
   toolbars would crush the square tile. */
.splitter-layout.composer-layout,
.splitter-layout.composer-layout.preview-flat,
.splitter-layout.composer-layout.help-open {
  grid-template-columns: 268px 1fr;
  grid-template-rows: minmax(0, 1fr);
  position: relative;
}

.composer-layout .compose-view-switch {
  display: flex;
  gap: 8px;
  padding: 8px;
  border-bottom: 1px solid var(--border);
  background: var(--card-bg);
  flex-shrink: 0;
}
.composer-layout .compose-view-switch .btn {
  flex: 1 1 auto;
  min-height: 40px;
}
.composer-layout .compose-view-switch .btn[aria-pressed="true"] {
  border-color: var(--pink);
  background: rgba(217, 70, 168, 0.22);
  color: var(--cream);
}

.composer-layout .composer-pane .tile-controls,
.composer-layout .preview-panel,
.composer-layout .help-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: auto;
  width: min(400px, 92vw);
  max-height: none;
  margin: 0;
  grid-column: auto;
  grid-row: auto;
  z-index: 60;
  overflow-y: auto;
  background: var(--navy);
  border-left: 1px solid var(--border);
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.45);
  transform: translateX(105%);
  visibility: visible;
  transition: transform 0.28s cubic-bezier(0.22, 1, 0.36, 1);
  display: flex;
}

.composer-layout.tools-open .composer-pane .tile-controls,
.composer-layout.preview-open .preview-panel,
.composer-layout.help-open .help-panel {
  transform: translateX(0);
}

.composer-layout .preview-panel { min-height: 0; }
.composer-layout .preview-flat-open,
.composer-layout #previewFlatBtn { display: none; }

.composer-layout.preview-flat .preview-panel { min-height: 0; flex-direction: column; }
.composer-layout.preview-flat .preview-flat-open { display: none; }
.composer-layout.preview-flat .preview-panel .panel-head { display: flex; }
.composer-layout.preview-flat .preview-panel .tile-preview { display: block; }
.composer-layout.preview-flat .preview-panel .preview-controls { display: block; }

.composer-layout .drawer-close {
  display: block;
  width: 100%;
  padding: 12px;
  border: none;
  border-bottom: 1px solid var(--border);
  background: rgba(217, 70, 168, 0.14);
  color: var(--cream);
  font-family: inherit;
  font-size: 0.85rem;
  text-align: right;
  cursor: pointer;
}
.composer-layout .tile-controls .drawer-close { order: -1; }

.composer-layout .compose-drawer-backdrop {
  display: block;
  position: fixed;
  inset: 0;
  z-index: 50;
  background: var(--gate-scrim);
  opacity: 0.6;
}
.composer-layout .compose-drawer-backdrop[hidden] { display: none; }

.help-head h2 { color: var(--pink); }

.help-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}

.help-nav-btn {
  padding: 4px 9px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: transparent;
  color: var(--accent);
  font-family: inherit;
  font-size: 0.66rem;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.help-nav-btn:hover,
.help-nav-btn.active {
  border-color: var(--pink);
  color: var(--cream);
  background: rgba(255, 105, 180, 0.14);
}

.help-body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 4px 16px 24px;
  scroll-behavior: smooth;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.help-section {
  padding: 16px 0 6px;
  border-bottom: 1px solid var(--border);
}

.help-section:last-child { border-bottom: none; }

.help-section h3 {
  margin: 0 0 6px;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--pink);
}

.help-section.help-flash h3 { animation: helpFlash 1s ease; }

@keyframes helpFlash {
  0%, 100% { color: var(--pink); }
  30% { color: var(--cream); }
}

.help-lead {
  margin: 0 0 12px;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--cream);
  opacity: 0.85;
}

.help-defs { margin: 0; }

.help-defs dt {
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--cream);
  margin-top: 12px;
}

.help-defs dt:first-child { margin-top: 0; }

.help-defs dd {
  margin: 3px 0 0;
  font-size: 0.74rem;
  line-height: 1.5;
  color: var(--accent);
}

.help-defs dd em { color: var(--cream); font-style: italic; }

.help-eg {
  display: inline-block;
  margin-top: 4px;
  color: var(--cream);
  opacity: 0.7;
  font-style: italic;
}

.help-defs code {
  font-family: 'SFMono-Regular', Consolas, monospace;
  font-size: 0.7rem;
  padding: 1px 5px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.07);
  color: var(--cream);
  font-style: normal;
}

.help-defs kbd {
  font-family: inherit;
  font-size: 0.68rem;
  padding: 1px 6px;
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--cream);
}

.help-keys {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 12px;
  align-items: baseline;
}

.help-keys dt { margin-top: 0; }
.help-keys dd { margin-top: 0; }

.panel-head h2 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-transform: none;
  color: var(--cream);
}

.badge {
  font-size: 0.72rem;
  font-family: var(--font-ui);
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.panel-hint {
  font-size: 0.78rem;
  letter-spacing: 0.01em;
  color: var(--muted);
  opacity: 1;
  padding: 8px 16px;
  font-family: var(--font-ui);
}

.detect-one-flag {
  margin: 0 12px 10px;
  padding: 10px 12px;
  border: 1px solid var(--attention-border);
  background: var(--attention-bg);
  color: var(--cream);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.72rem;
  line-height: 1.45;
  letter-spacing: 0.02em;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.detect-one-flag.hidden { display: none !important; }

.detect-one-flag strong {
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--tile-outline, #e0b84e);
}

.detect-one-flag span { color: var(--accent); opacity: 0.95; }

.detect-one-flag em {
  font-style: normal;
  color: var(--cream);
  border-bottom: 1px solid var(--pink);
}

.sprite-select-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 0 12px 10px;
  border-bottom: 1px solid var(--border);
}

.sprite-select-bar .btn-sm {
  padding: 4px 10px;
  font-size: 0.62rem;
}

.sprite-select-bar .sprite-add-selected:not(:disabled),
.sprite-select-bar .sprite-batch-action:not(:disabled) {
  border-color: var(--pink);
  color: #fff;
  background: rgba(217, 70, 168, 0.85);
}

.sprite-selected-count {
  margin-left: auto;
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  color: var(--accent);
  font-family: -apple-system, sans-serif;
  font-variant-numeric: tabular-nums;
}

.sprite-selected-count[hidden] {
  display: none;
}

.panel-head-sub {
  border-top: 1px solid var(--border);
  margin-top: 4px;
  flex-wrap: wrap;
  gap: 8px;
}

.panel-clear-btn {
  margin-left: auto;
  padding: 4px 10px;
  font-size: 0.65rem;
}

.stored-palette {
  max-height: 180px;
  flex: none;
}

.sprite-palette:empty::after {
  content: 'None yet';
  display: block;
  text-align: center;
  font-size: 0.68rem;
  color: var(--accent);
  opacity: 0.45;
  padding: 12px;
  font-family: -apple-system, sans-serif;
}

#spritePalette {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 8px 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-content: start;
  user-select: none;
  -webkit-user-select: none;
}

#storedPalette {
  overflow-y: auto;
  overflow-x: hidden;
  padding: 10px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-auto-rows: 120px;
  gap: 10px;
  align-content: start;
  user-select: none;
  -webkit-user-select: none;
}

.size-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.size-section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.22);
}

.size-section-head .size-title {
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cream);
  font-weight: normal;
}

.size-section-head .size-meta {
  font-size: 0.62rem;
  color: var(--accent);
  font-family: -apple-system, sans-serif;
  opacity: 0.85;
}

.size-section-head .badge {
  font-size: 0.62rem;
}

.size-section-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-left: auto;
}

.size-section-actions .btn-sm {
  padding: 3px 8px;
  font-size: 0.58rem;
}

.size-section-actions .section-add:not(:disabled) {
  border-color: var(--pink);
  color: #fff;
  background: rgba(217, 70, 168, 0.85);
}

.size-section-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-auto-rows: 120px;
  gap: 10px;
  align-content: start;
}

.sprite-thumb {
  position: relative;
  box-sizing: border-box;
  width: 100%;
  height: 120px;
  min-height: 120px;
  max-height: 120px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: repeating-conic-gradient(#e8e4dc 0% 25%, #fff 0% 50%) 0 0 / 14px 14px;
  cursor: grab;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
  transition: border-color 0.15s, box-shadow 0.15s, opacity 0.15s;
  user-select: none;
  -webkit-user-select: none;
}

.sprite-thumb:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(201, 185, 154, 0.35);
}
.sprite-thumb:active { cursor: grabbing; }
.sprite-thumb.selected {
  border-color: var(--pink);
  box-shadow: 0 0 0 1px rgba(217, 70, 168, 0.55);
}
.sprite-thumb.editing {
  border-color: var(--pink);
  box-shadow: 0 0 0 1px var(--pink);
}

.sprite-thumb .thumb-check {
  position: absolute;
  top: 6px;
  right: 30px;
  z-index: 2;
  width: 22px;
  height: 22px;
  margin: 0;
  padding: 0;
  border: 1.5px solid rgba(15, 27, 45, 0.45);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.85);
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  display: grid;
  place-items: center;
  transition: background 0.12s, border-color 0.12s;
}

.sprite-thumb .thumb-check::after {
  content: '';
  width: 10px;
  height: 6px;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(-45deg) translate(1px, -1px);
  opacity: 0;
}

.sprite-thumb .thumb-check:checked {
  background: var(--pink);
  border-color: var(--pink);
}

.sprite-thumb .thumb-check:checked::after {
  opacity: 1;
}

.sprite-thumb .thumb-check:focus-visible {
  outline: 2px solid var(--pink);
  outline-offset: 1px;
}
.sprite-thumb.is-dragging {
  opacity: 0.35;
  border-color: var(--pink);
}

body.palette-dragging {
  cursor: grabbing;
  user-select: none;
  -webkit-user-select: none;
}
body.palette-dragging .sprite-thumb { cursor: grabbing; }

.sprite-drag-ghost {
  position: fixed;
  z-index: 9999;
  width: 104px;
  height: 104px;
  pointer-events: none;
  border: 2px solid var(--pink);
  border-radius: 10px;
  background: repeating-conic-gradient(#e8e4dc 0% 25%, #fff 0% 50%) 0 0 / 12px 12px;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.4);
  overflow: hidden;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
}
.sprite-drag-ghost img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  pointer-events: none;
}

.tile-drop-hot {
  outline: 2px dashed var(--pink);
  outline-offset: -6px;
}

.sprite-thumb img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  pointer-events: none;
  -webkit-user-drag: none;
  user-select: none;
}

.sprite-thumb .num {
  position: absolute;
  top: 6px;
  left: 6px;
  z-index: 1;
  font-size: 0.62rem;
  background: var(--chip-bg);
  color: var(--cream);
  min-width: 22px;
  height: 20px;
  padding: 0 5px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: -apple-system, sans-serif;
  font-variant-numeric: tabular-nums;
}

.sprite-thumb .save-one {
  position: absolute;
  bottom: 6px;
  right: 6px;
  z-index: 1;
  width: 24px;
  height: 24px;
  border: none;
  border-radius: 6px;
  background: var(--chip-bg);
  color: var(--cream);
  font-size: 0.75rem;
  cursor: pointer;
  opacity: 0.55;
  transition: opacity 0.15s;
}

.sprite-thumb .to-tile {
  position: absolute;
  bottom: 6px;
  left: 6px;
  z-index: 1;
  height: 24px;
  padding: 0 8px;
  border: none;
  border-radius: 6px;
  background: rgba(217, 70, 168, 0.92);
  color: #fff;
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.15s;
  font-family: inherit;
}

.sprite-thumb:hover .save-one,
.sprite-thumb:hover .to-tile { opacity: 1; }

.sprite-palette.hide-sprite-delete .remove-sprite {
  display: none !important;
}

.sprite-thumb .remove-sprite {
  position: absolute;
  top: 6px;
  right: 6px;
  z-index: 2;
  width: 22px;
  height: 22px;
  padding: 0;
  border: 1.5px solid rgba(15, 27, 45, 0.35);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.9);
  color: #5c2438;
  font-size: 0.95rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0.55;
  transition: opacity 0.15s, background 0.15s, color 0.15s;
  display: grid;
  place-items: center;
}

.sprite-thumb:hover .remove-sprite,
.sprite-thumb .remove-sprite:focus-visible { opacity: 1; }

.sprite-thumb .remove-sprite:hover,
.sprite-thumb .remove-sprite:focus-visible {
  background: #c23b5a;
  border-color: #c23b5a;
  color: #fff;
}

.detect-controls {
  padding: 12px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.72rem;
  color: var(--accent);
  font-family: -apple-system, sans-serif;
}

.detect-controls label {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.detect-label > span {
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}

.detect-label > span em {
  font-style: normal;
  opacity: 0.7;
  margin-left: 0.35em;
}

.detect-help {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.2);
  font-size: 0.68rem;
  line-height: 1.45;
}

.detect-help summary {
  padding: 8px 10px;
  cursor: pointer;
  color: var(--accent);
  list-style: none;
  letter-spacing: 0.04em;
}

.detect-help summary::-webkit-details-marker { display: none; }

.detect-help summary::before {
  content: '? ';
  font-weight: bold;
}

.detect-help[open] summary {
  border-bottom: 1px solid var(--border);
}

.detect-help dl {
  margin: 0;
  padding: 8px 10px 10px;
}

.detect-help dt {
  color: var(--cream);
  font-weight: 600;
  margin-top: 8px;
}

.detect-help dt:first-child { margin-top: 0; }

.detect-help dd {
  margin: 4px 0 0;
  color: var(--accent);
  opacity: 0.85;
}

.detect-controls input[type=range] { width: 100%; }

.btn-sm {
  padding: 6px 12px;
  font-size: 0.7rem;
}

.work-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
}

.tab {
  flex: 1;
  padding: 12px;
  border: none;
  background: transparent;
  color: var(--accent);
  font-family: inherit;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}

.tab.active { color: var(--cream); border-bottom-color: var(--accent); }

.tab-pane { display: none; flex: 1; flex-direction: column; min-height: 0; overflow: hidden; }
.tab-pane.active { display: flex; }

.source-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  font-size: 0.72rem;
  color: var(--accent);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.source-toolbar.disabled { opacity: 0.45; pointer-events: none; }

.tool-group {
  display: flex;
  gap: 4px;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px;
}

.tool-btn {
  padding: 5px 10px;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--accent);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, color 0.15s;
}

.tool-btn.active { background: var(--accent); color: var(--accent-contrast); }

.cleanup-tool-btn {
  padding: 5px 10px;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--accent);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, color 0.15s;
}

.cleanup-tool-btn.active { background: var(--accent); color: var(--accent-contrast); }

.cleanup-label {
  color: var(--cream);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.cleanup-stylize-bar {
  border-top: none;
  padding-top: 6px;
  background: rgba(0, 0, 0, 0.12);
}

.palette-swatches {
  display: flex;
  align-items: center;
  gap: 3px;
  flex-wrap: wrap;
  max-width: 160px;
  min-height: 18px;
}

.palette-swatches.empty {
  display: none;
}

.palette-swatch {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  flex-shrink: 0;
}

.cleanup-wrap {
  flex: 1;
  overflow: auto;
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  /* Distinct from chrome: dark checkers in dark theme, soft blue in light */
  background: repeating-conic-gradient(#1a2a40 0% 25%, #152238 0% 50%) 0 0 / 20px 20px;
}

html[data-theme="light"] .cleanup-wrap {
  background: repeating-conic-gradient(#d4e4f4 0% 25%, #eef5fb 0% 50%) 0 0 / 20px 20px;
}

.cleanup-canvas-stack {
  position: relative;
  display: inline-block;
  line-height: 0;
  max-width: none;
  flex-shrink: 0;
}

.cleanup-wrap.is-zoomed {
  align-items: flex-start;
  justify-content: flex-start;
}

#cleanupCanvas {
  display: block;
  width: auto;
  height: auto;
  border: 2px solid var(--pink);
  box-shadow: 0 0 0 1px rgba(217, 70, 168, 0.2);
  background: repeating-conic-gradient(#ddd 0% 25%, #fff 0% 50%) 0 0 / 16px 16px;
  cursor: none;
  touch-action: none;
  image-rendering: auto;
}

#cleanupCanvas.tool-eyedropper { cursor: cell; }
#cleanupCanvas.tool-fill { cursor: cell; }

.brush-cursor {
  position: absolute;
  border: 1.5px solid #d946a8;
  border-radius: 50%;
  pointer-events: none;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.7);
  transform: translate(-50%, -50%);
  z-index: 5;
}

.brush-cursor.hidden { display: none; }
.hidden { display: none !important; }

.btn-sm.active { background: var(--accent); color: var(--accent-contrast); }

.toolbar-field {
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.toolbar-field input[type=range] { width: 72px; }

.toolbar-field input[type=color] {
  width: 28px; height: 24px;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px;
  cursor: pointer;
  background: transparent;
}

.toolbar-field span {
  min-width: 22px;
  font-variant-numeric: tabular-nums;
  color: var(--cream);
}

.toolbar-check {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.source-hint { padding-top: 0; }

.source-wrap {
  flex: 1;
  overflow: auto;
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.source-wrap.is-zoomed {
  align-items: flex-start;
  justify-content: flex-start;
}

.source-wrap .empty-msg {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  color: var(--muted);
  opacity: 0.85;
  font-size: 0.95rem;
  font-family: var(--font-ui);
  letter-spacing: 0.01em;
  text-transform: none;
  text-align: center;
  pointer-events: none;
}

#sourceCanvas {
  display: block;
  width: auto;
  height: auto;
  max-width: none;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.source-canvas-stack {
  position: relative;
  display: inline-block;
  line-height: 0;
  max-width: none;
  flex-shrink: 0;
}

#boxOverlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
}

#boxOverlay.active { pointer-events: auto; }

.detect-box {
  position: absolute;
  border: 2px solid var(--pink);
  box-sizing: border-box;
  pointer-events: auto;
}

.detect-box.selected {
  border-color: #fff;
  box-shadow: 0 0 0 1px var(--pink);
}

.detect-box .resize-handle {
  position: absolute;
  background: var(--pink);
  border: 1px solid #fff;
  box-sizing: border-box;
  z-index: 2;
}

.detect-box.selected .resize-handle { background: #fff; border-color: var(--pink); }

/* edge handles */
.resize-handle.n, .resize-handle.s { left: 50%; width: 14px; height: 8px; margin-left: -7px; cursor: ns-resize; }
.resize-handle.n { top: -5px; }
.resize-handle.s { bottom: -5px; }
.resize-handle.e, .resize-handle.w { top: 50%; width: 8px; height: 14px; margin-top: -7px; cursor: ew-resize; }
.resize-handle.e { right: -5px; }
.resize-handle.w { left: -5px; }
/* corners */
.resize-handle.ne, .resize-handle.nw, .resize-handle.se, .resize-handle.sw {
  width: 10px; height: 10px; border-radius: 2px;
}
.resize-handle.ne { top: -6px; right: -6px; cursor: nesw-resize; }
.resize-handle.nw { top: -6px; left: -6px; cursor: nwse-resize; }
.resize-handle.se { bottom: -6px; right: -6px; cursor: nwse-resize; }
.resize-handle.sw { bottom: -6px; left: -6px; cursor: nesw-resize; }

#sourceCanvas.tool-brush,
#sourceCanvas.tool-matcher { cursor: none; }
#sourceCanvas.tool-eyedropper { cursor: cell; }
#sourceCanvas.tool-rect { cursor: crosshair; }

#sourceCanvas.erasing { cursor: none; }

.rect-select-box {
  position: absolute;
  border: 2px dashed var(--pink, #d946a8);
  background: rgba(217, 70, 168, 0.14);
  pointer-events: none;
  z-index: 4;
  box-sizing: border-box;
}

.rect-select-box.hidden { display: none; }

.tile-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 10px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--accent);
  font-family: -apple-system, sans-serif;
}

.tile-tool-block {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1 1 200px;
  min-width: min(100%, 180px);
  max-width: 100%;
  padding: 8px 10px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.14);
  box-sizing: border-box;
}

.tile-tool-heading {
  margin: 0;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  line-height: 1.2;
}

.tile-tool-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 8px;
}

.tile-controls label {
  display: flex;
  align-items: center;
  gap: 6px;
}

.tile-controls input[type=number] {
  width: 72px;
  padding: 4px 6px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--navy);
  color: var(--cream);
  font-family: inherit;
}

.tile-controls .tile-title-field input[type=text] {
  width: 120px;
  max-width: 40vw;
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--navy);
  color: var(--cream);
  font-family: inherit;
}

.tile-controls .tile-title-field input[type=text]:focus {
  outline: none;
  border-color: var(--pink);
}

.tile-controls .tile-rot-field input[type=number] {
  width: 56px;
  padding: 4px 6px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--navy);
  color: var(--cream);
  font-family: inherit;
}

.tile-controls .tile-rot-field input[type=number]:focus {
  outline: none;
  border-color: var(--pink);
}

.tile-controls .tile-scale-field {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.tile-controls .tile-scale-field .btn {
  min-width: 28px;
  padding-left: 8px;
  padding-right: 8px;
}

.placed-selected-count {
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--accent, #c4a574);
  white-space: nowrap;
}

.tile-controls input[type=color] {
  width: 32px;
  height: 28px;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px;
  cursor: pointer;
  background: transparent;
}

.arrange-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.arrange-controls select,
.tile-tool-row select {
  padding: 4px 6px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--navy);
  color: var(--cream);
  font-family: inherit;
  font-size: 0.72rem;
  cursor: pointer;
  max-width: 100%;
}

.arrange-controls .toolbar-check {
  font-size: 0.72rem;
  color: var(--cream);
  letter-spacing: 0.04em;
}

.arrange-controls .arrange-color-strength {
  gap: 4px;
  font-size: 0.72rem;
}

.arrange-controls .arrange-color-strength input[type=range] {
  width: 72px;
  max-width: 30vw;
  vertical-align: middle;
}

.arrange-controls .arrange-tint-swatch {
  gap: 0;
}

.arrange-controls .arrange-tint-swatch input[type=color] {
  width: 28px;
  height: 28px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: transparent;
  cursor: pointer;
}

@media (max-width: 1100px) {
  .tile-tool-block {
    flex: 1 1 calc(50% - 10px);
    min-width: min(100%, 240px);
  }
}

@media (max-width: 700px) {
  .tile-controls {
    gap: 8px;
    padding: 8px;
  }

  .tile-tool-block {
    flex: 1 1 100%;
    min-width: 0;
  }

  .tile-controls .tile-title-field input[type=text] {
    width: min(160px, 50vw);
  }

  .tile-tool-row .btn {
    min-height: 36px;
  }

  .arrange-controls select,
  .tile-tool-row select {
    min-height: 36px;
    font-size: 0.78rem;
  }
}

.layer-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border-bottom: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.18);
}

.layer-bar-label {
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}

.layer-tabs {
  display: flex;
  gap: 10px;
}

.layer-slot {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.layer-move {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.layer-move-btn {
  min-width: 26px;
  padding: 3px 7px;
  line-height: 1;
}

.layer-eye {
  width: 26px;
  height: 26px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.layer-eye::before {
  content: '';
  width: 16px;
  height: 16px;
  background-color: currentColor;
  -webkit-mask: center / contain no-repeat
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M1 12s4-8 11-8 11 8 11 8-4 8-11 8-11-8-11-8z'/%3E%3Ccircle cx='12' cy='12' r='3'/%3E%3C/svg%3E");
  mask: center / contain no-repeat
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M1 12s4-8 11-8 11 8 11 8-4 8-11 8-11-8-11-8z'/%3E%3Ccircle cx='12' cy='12' r='3'/%3E%3C/svg%3E");
}

.layer-eye:hover {
  border-color: var(--accent);
  color: var(--cream);
}

.layer-eye.is-off {
  color: var(--border);
  border-style: dashed;
}

.layer-eye.is-off::before {
  -webkit-mask-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M17.94 17.94A10.07 10.07 0 0 1 12 20c-7 0-11-8-11-8a18.45 18.45 0 0 1 5.06-5.94M9.9 4.24A9.12 9.12 0 0 1 12 4c7 0 11 8 11 8a18.5 18.5 0 0 1-2.16 3.19m-6.72-1.07a3 3 0 1 1-4.24-4.24'/%3E%3Cline x1='1' y1='1' x2='23' y2='23'/%3E%3C/svg%3E");
  mask-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M17.94 17.94A10.07 10.07 0 0 1 12 20c-7 0-11-8-11-8a18.45 18.45 0 0 1 5.06-5.94M9.9 4.24A9.12 9.12 0 0 1 12 4c7 0 11 8 11 8a18.5 18.5 0 0 1-2.16 3.19m-6.72-1.07a3 3 0 1 1-4.24-4.24'/%3E%3Cline x1='1' y1='1' x2='23' y2='23'/%3E%3C/svg%3E");
}

.layer-tab.layer-hidden {
  opacity: 0.5;
}

.layer-tab {
  position: relative;
  min-width: 44px;
  height: 32px;
  padding: 0 10px 0 8px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: transparent;
  color: var(--cream);
  font-family: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: border-color 0.15s, background 0.15s;
}

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

.layer-tab.active {
  border-color: var(--pink);
  background: rgba(217, 70, 168, 0.2);
  box-shadow: 0 0 0 1px rgba(217, 70, 168, 0.35);
}

.layer-count {
  font-size: 0.58rem;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  border-radius: 8px;
  background: rgba(201, 185, 154, 0.2);
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: -apple-system, sans-serif;
  font-variant-numeric: tabular-nums;
}

.layer-tab.active .layer-count {
  background: rgba(217, 70, 168, 0.35);
  color: var(--cream);
}

/* Background pseudo-layer: reorderable/hideable, visually set apart at the back */
.layer-slot--bg {
  margin-right: 2px;
  padding-right: 12px;
  border-right: 1px dashed var(--border);
}

.layer-tab--bg {
  min-width: 40px;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  background: repeating-linear-gradient(
    45deg,
    rgba(201, 185, 154, 0.16) 0 4px,
    transparent 4px 8px
  );
}

.layer-tab--bg.active {
  border-color: var(--pink);
  background:
    repeating-linear-gradient(45deg, rgba(217, 70, 168, 0.22) 0 4px, transparent 4px 8px),
    rgba(217, 70, 168, 0.14);
  box-shadow: 0 0 0 1px rgba(217, 70, 168, 0.35);
}

.layer-bar-hint {
  font-size: 0.65rem;
  color: var(--accent);
  opacity: 0.8;
  font-family: -apple-system, sans-serif;
}

.layer-zoom {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.layer-zoom .toolbar-field {
  margin: 0;
}

.tile-save-info {
  margin: 0 16px 8px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--cream);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: rgba(201, 185, 154, 0.12);
}

.tile-save-info.hidden { display: none; }

.bg-recipe-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  background: rgba(217, 70, 168, 0.15);
  border: 1px solid rgba(217, 70, 168, 0.35);
  color: var(--text);
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.bg-recipe-badge.hidden { display: none !important; }

.tile-save-info a { color: var(--accent); }

.tile-editor-wrap {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: repeating-conic-gradient(var(--canvas-check-a) 0% 25%, var(--canvas-check-b) 0% 50%) 0 0 / 20px 20px;
}

.tile-editor-wrap.is-zoomed {
  align-items: flex-start;
  justify-content: flex-start;
}

#tileEditor {
  display: block;
  aspect-ratio: 1 / 1;
  border: 2px solid var(--pink);
  box-shadow: 0 0 0 1px rgba(217, 70, 168, 0.2);
  cursor: crosshair;
  flex: 0 0 auto;
  touch-action: none;
  background: #fff;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

#tileEditor.transparent-bg {
  background: repeating-conic-gradient(#c8c2b4 0% 25%, #f4efe4 0% 50%) 50% / 16px 16px;
}

#tileEditor.dropper-active { cursor: cell; }

.tile-preview {
  flex: 1;
  background-color: var(--navy);
  background-repeat: repeat;
  background-position: center;
  background-size: 200px 200px;
  min-height: 200px;
}

.tile-preview.transparent-bg {
  background-color: transparent;
  background-image:
    repeating-conic-gradient(#c8c2b4 0% 25%, #f4efe4 0% 50%) 0 0 / 16px 16px;
}

.tile-preview-large {
  min-height: 0;
  border-top: 1px solid var(--border);
}

.preview-controls-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  border-top: none;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.preview-controls-bar label {
  flex-direction: row;
  align-items: center;
  gap: 10px;
  flex: 1;
  max-width: 420px;
}

.preview-controls-bar input[type=range] { flex: 1; }

.preview-controls {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  font-size: 0.72rem;
  color: var(--accent);
  font-family: -apple-system, sans-serif;
}

.preview-controls label {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.preview-controls input[type=range] { width: 100%; }

/* Phones: drawer shell handled in studio-responsive.css */
@media (max-width: 640px) {
  .splitter-layout,
  .splitter-layout.splitter-page,
  body[data-extractor-mode="easy"] .splitter-layout.splitter-page,
  body[data-extractor-mode="advanced"] .splitter-layout.splitter-page,
  .splitter-layout.preview-flat,
  .splitter-layout.composer-layout,
  .splitter-layout.composer-layout.preview-flat,
  .splitter-layout.composer-layout.help-open {
    grid-template-columns: 1fr;
    grid-template-areas: none;
  }
}