/*
 * Library: the grid view (it takes the stage column and the inspector's width while browsing), tiles,
 * empty / guest / error panels, the keyboard-shortcuts popover, the opened-image view (‹ › on the stage,
 * toolbar, details) and the undo toast. Tokens only (css/tokens.css); mixes use color-mix() over tokens.
 * Scoped to .it-app[data-tool="image-library"] (or body[data-tool]) so a tool switch never inherits it.
 */

/* ---- Mode switching ---- */
.it-app[data-tool="image-library"] .it-dropzone,
.it-app[data-tool="image-library"] .it-versions,
.it-app[data-tool="image-library"] [data-resultbar] { display: none !important; }

.it-app[data-tool="image-library"].is-lib-grid .it-stagebar,
.it-app[data-tool="image-library"].is-lib-grid .it-stage,
.it-app[data-tool="image-library"].is-lib-grid .it-resultbar { display: none !important; }

.it-app[data-tool="image-library"].is-lib-item .it-lib { display: none; }
.it-app[data-tool="image-library"]:not(.is-lib-grid):not(.is-lib-item) .it-stage { border: 1px solid var(--border); background: var(--stage); }

/* Browsing: the inspector collapses (its H1 stays for screen readers) and the grid takes its width */
@media (min-width: 960px) {
  body.imagestack-page .it-app[data-tool="image-library"].is-lib-grid .it-main { grid-template-columns: minmax(0, 1fr) 0; }
  body.imagestack-page .it-app[data-tool="image-library"].is-lib-grid .it-inspector {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    border: 0;
  }
  body.imagestack-page .it-app[data-tool="image-library"].is-lib-grid .it-inspector-scroll { overflow: hidden; }
}

/* ---- Grid view shell ---- */
.it-lib {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  min-height: 0;
  min-width: 0;
}

.it-lib-bar {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  min-height: 36px;
}

.it-lib-search { position: relative; flex: 1 1 auto; min-width: 0; max-width: 420px; }

.it-lib-search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 13px;
  color: var(--text-3);
  pointer-events: none;
}

body.imagestack-page .it-lib-search-input {
  display: block;
  width: 100%;
  height: 36px;
  margin: 0;
  padding: 0 36px;
  border-radius: var(--r-md);
  border: 1px solid var(--border-control);
  background: var(--surface-2);
  color: var(--text);
  font: 500 var(--fs-label)/var(--lh-label) var(--font-ui);
  box-shadow: none;
  appearance: none;
  -webkit-appearance: none;
}
body.imagestack-page .it-lib-search-input::placeholder { color: var(--text-3); opacity: 1; }
body.imagestack-page .it-lib-search-input::-webkit-search-cancel-button { display: none; }
body.imagestack-page .it-lib-search-input:focus-visible { outline: none; border-color: var(--accent); box-shadow: var(--focus-ring); }
body.imagestack-page .it-lib-search-clear { position: absolute; right: 2px; top: 50%; transform: translateY(-50%); }
.it-lib-search-clear[hidden] { display: none !important; }

.it-lib-bar-end { display: flex; align-items: center; gap: var(--sp-2); margin-left: auto; }

/* Count: width reserved from first paint so nothing moves when it arrives */
body.imagestack-page .it-lib-status {
  flex: 0 0 auto;
  min-width: 10ch;
  margin: 0 var(--sp-1) 0 0;
  font-size: var(--fs-meta);
  line-height: var(--lh-meta);
  font-weight: 600;
  color: var(--text-3);
  text-align: right;
  white-space: nowrap;
}
.it-lib.is-empty .it-lib-status { visibility: hidden; }

body.imagestack-page .it-lib-sort > i:first-child { color: var(--text-3); }
body.imagestack-page .it-lib-density .it-segmini-btn { min-width: 32px; font-size: 12px; }

/* ---- Filter chips: one row, edge fades only where it overflows; skeletons reserve the height ---- */
.it-lib-subbar { position: relative; flex: 0 0 auto; min-width: 0; height: 36px; }
body.imagestack-page .it-lib-filterscroll {
  position: absolute;
  top: 2px;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: var(--r-pill);
  background: var(--surface-3);
  box-shadow: 0 0 0 1px var(--border-control), var(--e-2);
  color: var(--text);
  font-size: 11px;
  cursor: pointer;
}
body.imagestack-page .it-lib-filterscroll:hover { color: var(--accent); }
.it-lib-filterscroll[hidden] { display: none; }
.it-lib-filterscroll--prev { left: 0; }
.it-lib-filterscroll--next { right: 0; }
@media (hover: none) { body.imagestack-page .it-lib-filterscroll { display: none; } }

.it-lib-filters {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  /* Critic r2 N6: the row grows with the chip (32px, 44px on touch) plus 4px of room for the pressed ring,
     so nothing is ever shaved; it scrolls sideways with edge fades and snaps chip by chip. */
  height: auto;
  min-height: 40px;
  min-width: 0;
  padding: 4px 2px;
  scroll-snap-type: x proximity;
  scroll-padding-inline: 32px;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  overscroll-behavior-x: contain;
  --fade-start: 0px;
  --fade-end: 0px;
  mask-image: linear-gradient(to right, transparent 0, var(--bg) var(--fade-start), var(--bg) calc(100% - var(--fade-end)), transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0, var(--bg) var(--fade-start), var(--bg) calc(100% - var(--fade-end)), transparent 100%);
}
.it-lib-filters::-webkit-scrollbar { display: none; }
.it-lib-filters > * { scroll-snap-align: start; }
.it-lib-filters.fade-start { --fade-start: 32px; }
.it-lib-filters.fade-end { --fade-end: 32px; }

.it-lib-chip-skeleton {
  flex: 0 0 auto;
  height: 32px;
  border-radius: var(--r-pill);
  background: linear-gradient(100deg, var(--surface-2) 30%, var(--surface-3) 50%, var(--surface-2) 70%) 0 0 / 300% 100%;
  animation: it-lib-shimmer var(--t-shimmer) linear infinite;
}

body.imagestack-page .it-lib-chip { flex: 0 0 auto; height: 32px; padding: 0 var(--sp-2) 0 var(--sp-3); }
body.imagestack-page .it-lib-chip:not(:has(.it-lib-chip-count)) { padding-right: var(--sp-3); }
body.imagestack-page .it-lib-chip > i { font-size: 11px; color: var(--text-3); }
body.imagestack-page .it-lib-chip[aria-pressed="true"] > i { color: var(--accent); }
body.imagestack-page .it-lib-chip-count {
  min-width: 20px;
  padding: 1px 6px;
  border-radius: var(--r-pill);
  background: var(--surface-3);
  font-size: var(--fs-meta);
  line-height: var(--lh-meta);
  font-weight: 600;
  color: var(--text-3);
  text-align: center;
}
body.imagestack-page .it-lib-chip[aria-pressed="true"] .it-lib-chip-count { background: var(--accent-tint); color: var(--accent); }

/* A brand-new library: the controls stay in place (no shift) but invisible */
.it-lib.is-blank .it-lib-bar,
.it-lib.is-blank .it-lib-subbar { display: none; }

.it-lib-scroll {
  position: relative;
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: var(--sp-3);
  border-radius: var(--r-xl);
  border: 1px solid var(--border);
  background: var(--stage);
  scrollbar-width: thin;
  scrollbar-color: var(--surface-3) transparent;
}

/* ---- Grid ---- */
body.imagestack-page .it-lib-grid {
  --lib-min: 150px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--lib-min), 1fr));
  gap: var(--sp-2);
  margin: 0;
  padding: 0;
  list-style: none;
}
.it-lib[data-density="compact"] .it-lib-grid { --lib-min: 112px; gap: 6px; }
.it-lib.is-empty .it-lib-grid { display: none; }

.it-libtile {
  position: relative;
  aspect-ratio: 1 / 1;
  min-width: 0;
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--surface-2);
  box-shadow: inset 0 0 0 1px var(--border);
  transition: box-shadow var(--t-fast) var(--ease-out);
}
.it-libtile[hidden] { display: none; }

.it-libtile.has-alpha {
  background-color: var(--checker-a);
  background-image: conic-gradient(var(--checker-b) 25%, transparent 0 50%, var(--checker-b) 0 75%, transparent 0);
  background-size: 16px 16px;
}

body.imagestack-page .it-libtile-open {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: inherit;
  background: transparent;
  cursor: zoom-in;
}
body.imagestack-page .it-libtile-open:focus-visible { outline: none; }

.it-libtile-media { position: absolute; inset: 0; }
.it-libtile-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity var(--t-med) var(--ease-out), transform var(--t-slow) var(--ease-out);
}
.it-libtile.is-loaded .it-libtile-media img { opacity: 1; }
.it-libtile.has-alpha .it-libtile-media img { object-fit: contain; }
@media (hover: hover) {
  .it-libtile:hover .it-libtile-media img { transform: scale(1.03); }
}

.it-libtile:hover { box-shadow: inset 0 0 0 1px var(--border-control); }
.it-libtile:has(.it-libtile-open:focus-visible) {
  overflow: visible;
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent);
}
.it-libtile:has(.it-libtile-open:focus-visible) .it-libtile-media { border-radius: var(--r-md); overflow: hidden; }

.it-libtile-glyph {
  position: absolute;
  left: 8px;
  bottom: 8px;
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: var(--r-sm);
  background: var(--badge-ground);
  color: var(--text);
  font-size: 10px;
  pointer-events: none;
  transition: opacity var(--t-fast) var(--ease-out);
}

/* Hover and focus: tool + relative date along the bottom, quick actions top right */
.it-libtile-meta {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  padding: var(--sp-6) var(--sp-3) var(--sp-2);
  border-radius: 0 0 var(--r-md) var(--r-md);
  background: linear-gradient(to top, color-mix(in srgb, var(--bg) 88%, transparent), transparent);
  pointer-events: none;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity var(--t-fast) var(--ease-out), transform var(--t-fast) var(--ease-out);
}
.it-libtile-tool { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; font-size: var(--fs-label); line-height: var(--lh-label); font-weight: 700; color: var(--text); }
.it-libtile-when { font-size: var(--fs-meta); line-height: var(--lh-meta); font-weight: 600; color: var(--text); }

.it-libtile-actions {
  position: absolute;
  top: 6px;
  right: 6px;
  display: flex;
  gap: 4px;
  opacity: 0;
  transform: translateY(-2px);
  transition: opacity var(--t-fast) var(--ease-out), transform var(--t-fast) var(--ease-out);
}

body.imagestack-page .it-libtile-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  min-width: 32px;
  height: 32px;
  margin: 0;
  padding: 0 8px;
  border: 0;
  border-radius: var(--r-md);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  color: var(--text);
  font-size: 12px;
  cursor: pointer;
  transition: background-color var(--t-fast) var(--ease-out), color var(--t-fast) var(--ease-out);
}
body.imagestack-page .it-libtile-btn:hover { background: var(--surface-3); color: var(--accent); }
body.imagestack-page .it-libtile-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
body.imagestack-page .it-libtile-btn[aria-expanded="true"] { background: var(--surface-3); color: var(--accent); }
.it-libtile-caret { font-size: 8px; opacity: .8; }

.it-libtile:hover .it-libtile-meta,
.it-libtile:focus-within .it-libtile-meta,
.it-libtile:hover .it-libtile-actions,
.it-libtile:focus-within .it-libtile-actions,
.it-libtile:has([aria-expanded="true"]) .it-libtile-actions,
.it-libtile:has([aria-expanded="true"]) .it-libtile-meta { opacity: 1; transform: none; }
.it-libtile:hover .it-libtile-glyph,
.it-libtile:focus-within .it-libtile-glyph { opacity: 0; }

/* Compact tiles: icon-only, no date line */
.it-lib[data-density="compact"] .it-libtile-when { display: none; }
.it-lib[data-density="compact"] .it-libtile-meta { padding: var(--sp-5) var(--sp-2) 6px; }
.it-lib[data-density="compact"] .it-libtile-tool { font-size: var(--fs-meta); line-height: var(--lh-meta); }
.it-lib[data-density="compact"] .it-libtile-caret { display: none; }
body.imagestack-page .it-lib[data-density="compact"] .it-libtile-btn { min-width: 28px; height: 28px; padding: 0 6px; font-size: 11px; }

/* Broken or expired images */
.it-libtile-fallback {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: var(--sp-4);
  text-align: center;
  color: var(--text-3);
  font-size: var(--fs-meta);
  line-height: var(--lh-meta);
  font-weight: 600;
  background: repeating-linear-gradient(135deg, var(--surface-3) 0 1px, transparent 1px 10px), var(--surface-2);
}
.it-libtile-fallback > i { font-size: 18px; color: var(--text-3); }
.it-libtile-fallback-short { display: none; }
.it-lib[data-density="compact"] .it-libtile-fallback-long { display: none; }
.it-lib[data-density="compact"] .it-libtile-fallback-short { display: inline; }
.it-libtile.is-broken .it-libtile-fallback { display: flex; }
.it-libtile.is-broken .it-libtile-media,
.it-libtile.is-broken .it-libtile-glyph,
body.imagestack-page .it-libtile.is-broken .it-libtile-btn--download,
body.imagestack-page .it-libtile.is-broken .it-libtile-btn--continue { display: none; }
.it-libtile.is-broken .it-libtile-actions { opacity: 1; transform: none; }
.it-libtile.is-broken .it-libtile-meta { opacity: 1; transform: none; background: none; padding-top: 0; }
.it-libtile.is-broken .it-libtile-tool { color: var(--text-2); }
.it-libtile.is-broken .it-libtile-when { color: var(--text-3); }
body.imagestack-page .it-libtile.is-broken .it-libtile-open { cursor: default; }

/* Skeleton */
.it-libtile.is-skeleton {
  background: linear-gradient(100deg, var(--surface-2) 30%, var(--surface-3) 50%, var(--surface-2) 70%) 0 0 / 300% 100%;
  animation: it-lib-shimmer var(--t-shimmer) linear infinite;
}
@keyframes it-lib-shimmer {
  from { background-position: 100% 0; }
  to { background-position: 0 0; }
}
@media (prefers-reduced-motion: reduce) {
  .it-libtile.is-skeleton, .it-lib-chip-skeleton { animation: none; background: var(--surface-2); }
  .it-libtile-media img { transition: none; }
}

.it-lib-sentinel { height: 1px; }

.it-lib-foot {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-3);
  font-size: var(--fs-meta);
  line-height: var(--lh-meta);
  color: var(--text-3);
}
.it-lib-foot:not(:empty) { min-height: 56px; padding-top: var(--sp-3); }

/* ---- Panels: empty, filtered empty, error, guest ---- */
.it-lib-panel,
.it-lib-guest {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 640px;
  margin: 0 auto;
  padding: var(--sp-6) var(--sp-4);
  text-align: center;
}
.it-lib-panel[hidden] { display: none; }
.it-lib.is-empty .it-lib-scroll { display: grid; align-content: start; padding-top: clamp(24px, 12vh, 140px); }

.it-lib-panel-icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: var(--r-lg);
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--accent);
  font-size: 20px;
}
.it-lib-panel-icon.is-warning { color: var(--warning); }

body.imagestack-page .it-lib-panel-title {
  margin: var(--sp-5) 0 0;
  font-family: var(--font-display);
  font-size: var(--fs-display);
  line-height: var(--lh-display);
  font-weight: 600;
  letter-spacing: -.015em;
  color: var(--text);
  text-wrap: balance;
}
body.imagestack-page .it-lib-panel-body { margin: var(--sp-2) 0 0; font-size: var(--fs-body); line-height: var(--lh-body); color: var(--text-2); text-wrap: pretty; }
.it-lib-panel-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--sp-2); margin-top: var(--sp-6); }
body.imagestack-page .it-lib-panel-fine { margin: var(--sp-6) 0 0; font-size: var(--fs-meta); line-height: var(--lh-meta); color: var(--text-3); }
.it-lib-guest-tools { justify-content: center; margin-top: var(--sp-3); }

body.imagestack-page .it-lib-starters {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--sp-3);
  width: 100%;
  margin: var(--sp-8) 0 0;
  padding: 0;
  list-style: none;
  text-align: left;
}

body.imagestack-page .it-lib-starter {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
  height: 100%;
  padding: 0 0 var(--sp-4);
  overflow: hidden;
  border-radius: var(--r-lg);
  background: var(--surface-1);
  box-shadow: var(--e-1), inset 0 0 0 1px var(--border);
  color: var(--text);
  text-decoration: none;
  transition: box-shadow var(--t-fast) var(--ease-out), background-color var(--t-fast) var(--ease-out), transform var(--t-fast) var(--ease-out);
}
body.imagestack-page .it-lib-starter:hover { background: var(--surface-2); box-shadow: var(--e-1), inset 0 0 0 1px var(--border-control); color: var(--text); }
body.imagestack-page .it-lib-starter:active { transform: scale(.98); }
.it-lib-starter-media { position: relative; display: block; width: 100%; aspect-ratio: 16 / 10; margin-bottom: var(--sp-2); background: var(--surface-2); }
.it-lib-starter-media img { position: absolute; inset: 0; display: block; width: 100%; height: 100%; object-fit: cover; }
.it-lib-starter-icon {
  position: absolute;
  left: var(--sp-3);
  bottom: calc(-1 * var(--sp-3));
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: var(--r-md);
  background: var(--surface-3);
  box-shadow: 0 0 0 2px var(--surface-1);
  color: var(--accent);
  font-size: 13px;
}
.it-lib-starter-title { margin-top: var(--sp-3); padding: 0 var(--sp-3); font-size: var(--fs-label); line-height: var(--lh-label); font-weight: 700; }
.it-lib-starter-body { padding: 0 var(--sp-3); font-size: var(--fs-meta); line-height: var(--lh-meta); color: var(--text-3); }

/* Guest: blurred sample images behind the prompt */
.it-lib-scroll--guest { display: grid; overflow: hidden; }
.it-lib-scroll--guest { grid-template-columns: minmax(0, 1fr); }
.it-lib-scroll--guest > * { grid-area: 1 / 1; min-width: 0; }
.it-lib-grid--ghost { align-content: start; opacity: .5; mask-image: linear-gradient(to bottom, var(--bg) 0%, transparent 90%); -webkit-mask-image: linear-gradient(to bottom, var(--bg) 0%, transparent 90%); }
.it-libtile.is-ghost img { width: 100%; height: 100%; object-fit: cover; filter: blur(10px) saturate(.8); transform: scale(1.1); opacity: .7; }
.it-lib-guest {
  align-self: center;
  z-index: 1;
  width: min(540px, 100%);
  padding: var(--sp-8) var(--sp-6);
  border-radius: var(--r-lg);
  background: var(--surface-1);
  box-shadow: var(--e-3), inset 0 0 0 1px var(--border);
}

/* ---- Keyboard shortcuts popover ---- */
body.imagestack-page .it-lib-keys {
  position: fixed;
  z-index: var(--z-popover);
  width: 300px;
  max-width: calc(100vw - 16px);
  padding: var(--sp-4);
  border-radius: var(--r-lg);
  background: var(--surface-3);
  border: 1px solid var(--border-control);
  box-shadow: var(--e-2);
  color: var(--text);
  font-family: var(--font-ui);
  animation: it-pop var(--t-med) var(--ease-out);
}
body.imagestack-page .it-lib-keys:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
body.imagestack-page .it-lib-keys-title { margin: 0 0 var(--sp-3); font-size: var(--fs-label); line-height: var(--lh-label); font-weight: 700; }
.it-lib-keylist { display: grid; gap: var(--sp-2); margin: 0; }
.it-lib-keylist > div { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-3); }
.it-lib-keylist dt { display: flex; gap: 4px; }
.it-lib-keylist dd { margin: 0; font-size: var(--fs-meta); line-height: var(--lh-meta); color: var(--text-2); text-align: right; }
@media (hover: none) { .it-lib-keysbtn { display: none !important; } }

/* ---- Opened image: back, ‹ › on the stage, toolbar ---- */
body.imagestack-page .it-lib-back { margin-left: calc(-1 * var(--sp-2)); padding: 0 var(--sp-2); color: var(--text-2); }
.it-lib-back[hidden] { display: none; }
body.imagestack-page .it-lib-back + .it-stagebar-title { padding-left: var(--sp-3); border-left: 1px solid var(--border); }

body.imagestack-page .it-lib-nav {
  position: absolute;
  top: 50%;
  z-index: calc(var(--z-stage-ui) + 2);
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  margin: -20px 0 0;
  padding: 0;
  border: 0;
  border-radius: var(--r-pill);
  background: var(--badge-ground);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--text) 18%, transparent);
  color: var(--text);
  font-size: 14px;
  cursor: pointer;
  transition: background-color var(--t-fast) var(--ease-out), opacity var(--t-fast) var(--ease-out);
}
body.imagestack-page .it-lib-nav:hover:not(:disabled) { background: var(--surface-3); color: var(--accent); }
body.imagestack-page .it-lib-nav:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
body.imagestack-page .it-lib-nav:disabled { opacity: .35; cursor: default; }
.it-lib-nav[hidden] { display: none !important; }
.it-lib-nav--prev { left: var(--sp-3); }
.it-lib-nav--next { right: var(--sp-3); }

.it-app[data-tool="image-library"] .it-libactions[hidden] { display: none !important; }
body.imagestack-page .it-lib-delete { flex: 0 0 auto; width: 36px; height: 36px; }
body.imagestack-page .it-lib-delete:hover { color: var(--danger); }
body.imagestack-page .it-libactions .it-lib-continue-btn { display: none; }
/* The shared chip rule outranks the result toolbar's container queries; restate them for this bar. */
@container (max-width: 880px) { body.imagestack-page .it-libactions .it-chip--rank3 { display: none; } }
@container (max-width: 640px) { body.imagestack-page .it-libactions .it-chip--rank2 { display: none; } }

/* ---- Undo toast (Library only): bottom-right, never over the filters; countdown line and shortcut ---- */
@media (min-width: 960px) {
  body.imagestack-page[data-tool="image-library"] .it-toasts {
    top: auto;
    left: auto;
    right: var(--sp-6);
    bottom: var(--sp-6);
    align-items: flex-end;
    transform: none;
    max-width: min(420px, calc(100vw - 48px));
  }
}
.it-toast.it-lib-undo { position: relative; overflow: hidden; }
.it-lib-undo-kbd { margin-right: var(--sp-2); }
.it-lib-undo-line {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--accent);
  transform-origin: left center;
  animation: it-lib-undo var(--undo-ms, 6000ms) linear forwards;
}
.it-toast.it-lib-undo:hover .it-lib-undo-line,
.it-toast.it-lib-undo:focus-within .it-lib-undo-line { animation-play-state: paused; }
@keyframes it-lib-undo {
  from { transform: scaleX(1); }
  to { transform: scaleX(0); }
}
@media (prefers-reduced-motion: reduce) {
  .it-lib-undo-line { animation: none; opacity: .6; }
}

/* ---- Inspector (opened image) ---- */
body.imagestack-page .it-lib-details-tool {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  margin: 0 0 var(--sp-4);
  padding: 4px var(--sp-3) 4px 4px;
  border-radius: var(--r-pill);
  background: var(--surface-2);
  font-size: var(--fs-label);
  line-height: var(--lh-label);
  font-weight: 600;
  color: var(--text);
}
.it-lib-details-icon {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: var(--r-pill);
  background: var(--accent-tint);
  color: var(--accent);
  font-size: 11px;
}

.it-lib-meta { display: grid; gap: var(--sp-3); margin: 0; }
.it-lib-meta > div { display: grid; grid-template-columns: 64px minmax(0, 1fr); gap: var(--sp-3); }
.it-lib-meta > div[hidden] { display: none; }
.it-lib-meta dt { font-size: var(--fs-meta); line-height: var(--lh-body); font-weight: 600; color: var(--text-3); }
.it-lib-meta dd { margin: 0; font-size: var(--fs-label); line-height: var(--lh-body); color: var(--text); }
.it-lib-meta-sub { display: block; font-size: var(--fs-meta); line-height: var(--lh-meta); color: var(--text-3); }
.it-lib-meta-sub:empty { display: none; }

.it-lib-prompt-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--sp-2); }
.it-lib-prompt-head .it-label { margin: 0; }
body.imagestack-page .it-lib-copyprompt { height: 28px; padding: 0 var(--sp-2); font-size: var(--fs-meta); }
body.imagestack-page .it-lib-prompt {
  margin: 0;
  padding: var(--sp-3);
  border-radius: var(--r-md);
  background: var(--surface-2);
  font-size: var(--fs-label);
  line-height: var(--lh-body);
  color: var(--text-2);
}
/* The clamp lives on the inner text, so the box's padding never shows a partial 6th line */
.it-lib-prompt-text {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 5;
  max-height: calc(5 * var(--lh-body));
  overflow: hidden;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
body.imagestack-page .it-lib-prompt.is-expanded .it-lib-prompt-text { display: block; -webkit-line-clamp: unset; max-height: none; }
body.imagestack-page .it-lib-prompt:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.it-lib-source { display: flex; align-items: center; gap: var(--sp-3); }
.it-lib-source img { width: 72px; height: 72px; object-fit: cover; border-radius: var(--r-md); background: var(--surface-2); box-shadow: inset 0 0 0 1px var(--border); }
.it-lib-source .it-help { margin: 0; }

/* ---- Stacked layouts (< 960): the grid flows with the page, no inner scroll ---- */
@media (max-width: 959px) {
  body.imagestack-page .it-app[data-tool="image-library"] { padding-bottom: 0; }
  .it-app[data-tool="image-library"].is-lib-grid .it-stagecol { padding-bottom: var(--sp-8); }
  .it-app[data-tool="image-library"] .it-lib-scroll { overflow: visible; padding: 0; border: 0; border-radius: 0; background: transparent; }
  .it-app[data-tool="image-library"] .it-lib-scroll--guest { padding: var(--sp-4); border: 1px solid var(--border); border-radius: var(--r-xl); background: var(--stage); min-height: 520px; }
  .it-app[data-tool="image-library"].is-lib-grid .it-inspector { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .it-app[data-tool="image-library"].is-lib-grid .it-inspector-scroll { overflow: hidden; }
  /* Opened image: details straight under the toolbar (the page title would split them) */
  .it-app[data-tool="image-library"].is-lib-item .it-inspector-head { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .it-lib.is-empty .it-lib-scroll { min-height: 480px; }
  .it-app[data-tool="image-library"] .it-libactions:not([hidden]) { display: flex !important; }
  .it-lib-filters { margin: 0 calc(-1 * var(--sp-4)); padding: 4px var(--sp-4); } /* 4px block room for the pressed ring (critic r2 N6) */
}

@media (max-width: 767px) {
  .it-lib-bar { gap: var(--sp-2); min-height: 44px; }
  .it-lib-search { max-width: none; }
  body.imagestack-page .it-lib-search-input { height: 44px; font-size: var(--fs-body); }
  body.imagestack-page .it-lib-search-clear { width: 40px; height: 40px; }
  body.imagestack-page .it-lib-sort { width: 44px; height: 44px; padding: 0; gap: 0; }
  body.imagestack-page .it-lib-sort > .it-lib-sort-label,
  body.imagestack-page .it-lib-sort > .it-btn-caret { display: none; }
  body.imagestack-page .it-lib-density { display: none; }
  body.imagestack-page .it-lib-status { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); margin: 0; min-width: 0; }
  body.imagestack-page .it-lib-grid { --lib-min: 150px; gap: var(--sp-2); }
  .it-lib[data-density="compact"] .it-lib-grid { --lib-min: 100px; }
  /* Tap opens; long-press or the corner ⋯ opens the actions (see the touch rules below). */
  body.imagestack-page .it-lib-more { min-height: 44px; padding: 0 var(--sp-5); }
  body.imagestack-page .it-lib-starters { grid-template-columns: 1fr; margin-top: var(--sp-6); }
  .it-lib-guest { align-self: start; margin-top: var(--sp-14); padding: var(--sp-6) var(--sp-5); }
  .it-app[data-tool="image-library"] .it-lib-scroll--guest { min-height: 0; }
  body.imagestack-page .it-lib-nav { width: 44px; height: 44px; margin-top: -22px; }
  /* Opened image on a phone: [Download] [Continue ▾] [More] */
  body.imagestack-page .it-libactions { gap: var(--sp-2); }
  body.imagestack-page .it-libactions .it-resultbar-divider,
  body.imagestack-page .it-libactions .it-resultbar-continue,
  body.imagestack-page .it-libactions .it-lib-delete { display: none; }
  body.imagestack-page .it-libactions .it-resultbar-group:first-child { flex: 1 1 0; }
  body.imagestack-page .it-libactions .it-resultbar-group:first-child .it-btn { width: 100%; }
  body.imagestack-page .it-libactions .it-lib-continue-btn { display: inline-flex; flex: 1 1 0; }
  body.imagestack-page .it-libactions .it-resultbar-more { margin-left: 0; }
}

/* ---- Touch devices: a quiet, always-visible ⋯ on each tile (long-press is a shortcut, not the only path) ---- */
@media (hover: none) {
  .it-libtile-actions { opacity: 1; transform: none; top: 4px; right: 4px; }
  body.imagestack-page .it-libtile-btn--download,
  body.imagestack-page .it-libtile-btn--continue { display: none; }
  body.imagestack-page .it-libtile-btn--more {
    position: relative;
    min-width: 32px;
    width: 32px;
    height: 32px;
    padding: 0;
    border-radius: var(--r-pill);
    background: color-mix(in srgb, var(--bg) 70%, transparent);
  }
  /* 44 px hit area around the 32 px button */
  body.imagestack-page .it-libtile-btn--more::before { content: ""; position: absolute; inset: -6px; }
  .it-libtile-meta { display: none; }
  .it-libtile.is-broken .it-libtile-meta { display: flex; }
  .it-libtile:hover .it-libtile-glyph, .it-libtile:focus-within .it-libtile-glyph { opacity: 1; }
}

/* ---- Guest prompt on narrow phones: equal buttons, one row of chips ---- */
@media (max-width: 480px) {
  .it-lib-guest { width: 100%; max-width: 100%; }
  .it-lib-guest > * { max-width: 100%; }
  .it-lib-guest .it-lib-panel-actions { flex-direction: column; align-self: stretch; }
  .it-lib-guest .it-lib-panel-actions > .it-btn { width: 100%; }
  /* Final M1: the three free tools wrap and centre, every chip whole and visible (no scroller, no cut). */
  body.imagestack-page .it-lib-guest-tools { flex-wrap: wrap; justify-content: center; align-self: stretch; min-width: 0; max-width: 100%; overflow: visible; margin-inline: 0; padding: 2px 0; }
  body.imagestack-page .it-lib-guest-tools .it-chip { flex: 0 0 auto; height: 44px; max-width: 100%; }
}

/* Item position in the stage bar: "2 / 70" */
body.imagestack-page .it-lib-pos { flex: 0 0 auto; font-size: var(--fs-meta); line-height: var(--lh-meta); font-weight: 600; color: var(--text-3); }
.it-lib-pos[hidden] { display: none; }

/* Prompt: 5 lines, then "Show all" expands it in place */
body.imagestack-page .it-lib-prompt-more { height: 28px; margin: var(--sp-1) 0 0 calc(-1 * var(--sp-2)); padding: 0 var(--sp-2); font-size: var(--fs-meta); }
.it-lib-prompt-more[hidden] { display: none; }

/* Tool name in the bar: retired, the tablet top switcher names the tool at 768-1023 (final product #5). */
.it-lib-heading { display: none; }
@media (min-width: 768px) and (max-width: 767px) {
  body.imagestack-page .it-lib-heading {
    display: block;
    flex: 0 0 auto;
    margin: 0 var(--sp-1) 0 0;
    font-family: var(--font-display);
    font-size: var(--fs-title);
    line-height: var(--lh-title);
    font-weight: 600;
    color: var(--text);
  }
}