.collage-settings { flex-direction: column; align-items: stretch; gap: 16px; }
.collage-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

.collage-gap-group {
  display: flex;
  align-items: center;
  gap: 12px;

  flex: 1 1 auto;
  min-width: 200px;
  max-width: 100%;
}
.collage-gap-group input[type="range"] { flex: 1; accent-color: var(--accent); }

.collage-bg-group { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

.collage-mode-group,
.collage-cols-group,
.collage-format-group,
.collage-template-group { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

.collage-tpl-btn {
  width: 58px;
  height: 46px;
  padding: 4px;
  border-radius: 8px;
  border: 2px solid var(--border-strong);
  background: var(--bg-alt);
  cursor: pointer;
}
.collage-tpl-btn.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft);
}
.collage-tpl-preview {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  grid-template-rows: repeat(10, 1fr);
  width: 100%;
  height: 100%;
  gap: 2px;
}
.collage-tpl-preview i {
  display: block;
  background: var(--border-strong);
  border-radius: 2px;
  min-height: 4px;
}
.collage-tpl-hint {
  flex: 1 1 100%;
  font-size: 12.5px;
  color: var(--text-muted);
}

@media (max-width: 640px) {
  .collage-row { justify-content: center; }
}