/* Background picker — modal-housed grid of preview tiles + an upload tile.
   Bundled images get a static preview thumbnail; the user's current custom
   upload (if any) gets its own tile, marked "Current". The upload tile
   swaps the modal body to an upload form with format/size hints. */

.background-picker__intro {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  margin: 0 0 var(--space-md) 0;
}

.background-picker__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-md);
}

.background-picker__tile {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  text-align: left;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0;
  overflow: hidden;
  cursor: pointer;
  transition:
    transform var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.background-picker__tile:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.background-picker__tile:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.background-picker__tile--current {
  border-color: var(--color-accent);
  box-shadow: inset 0 0 0 2px var(--color-accent);
}

.background-picker__tile-preview {
  aspect-ratio: 16 / 9;
  background-color: var(--color-surface-alt);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

/* "Plain" preview — show the same dot pattern the canvas uses so the user
   sees exactly what they'll get. */
.background-picker__tile-preview--plain {
  background-image:
    radial-gradient(circle at 1px 1px, rgba(13, 94, 74, 0.10) 1px, transparent 0);
  background-size: 18px 18px;
}

.background-picker__tile-preview--upload {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 48px;
  color: var(--color-accent);
  background-color: var(--color-accent-soft);
  background-image: none;
  border-bottom: 1px dashed var(--color-accent);
}

.background-picker__tile-meta {
  padding: var(--space-sm) var(--space-md);
}

.background-picker__tile-name {
  font-family: var(--font-sans);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.background-picker__tile-desc {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
}

.background-picker__tile-current {
  position: absolute;
  top: var(--space-xs);
  right: var(--space-xs);
  background-color: var(--color-accent);
  color: var(--color-surface);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  padding: 2px var(--space-xs);
  border-radius: var(--radius-pill);
  letter-spacing: 0.02em;
}

/* Upload form (rendered into the same modal body when the "Upload your own"
   tile is clicked). One drop-target label that doubles as a click target
   for the hidden <input type="file">. */

.background-picker__upload-title {
  font-family: var(--font-serif);
  font-size: var(--font-size-lg);
  margin: 0 0 var(--space-xs) 0;
  color: var(--color-text);
}

.background-picker__upload-hint {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  margin: 0 0 var(--space-md) 0;
  line-height: var(--line-height-loose);
}

.background-picker__drop {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xxs);
  padding: var(--space-xl) var(--space-lg);
  border: 2px dashed var(--color-border-strong);
  border-radius: var(--radius-md);
  background-color: var(--color-surface-alt);
  cursor: pointer;
  text-align: center;
  transition:
    border-color var(--transition-fast),
    background-color var(--transition-fast);
}

.background-picker__drop:hover {
  border-color: var(--color-accent);
}

.background-picker__drop--active {
  border-color: var(--color-accent);
  background-color: var(--color-accent-soft);
}

.background-picker__drop-icon {
  font-size: 28px;
  color: var(--color-accent);
  line-height: 1;
}

.background-picker__drop-primary {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--color-text);
  font-size: var(--font-size-base);
}

.background-picker__drop-secondary {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.background-picker__file {
  display: none;
}

.background-picker__back {
  margin-top: var(--space-md);
}

@media (prefers-reduced-motion: reduce) {
  .background-picker__tile,
  .background-picker__drop {
    transition: none;
  }
  .background-picker__tile:hover {
    transform: none;
  }
}

/* Toolbar entry — small icon-only button between the title and the
   pending-review chip. Matches the brass tint pattern of the other
   secondary actions. */
.toolbar__background {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xxs);
  padding: var(--space-xxs) var(--space-sm);
  border-radius: var(--radius-pill);
  background-color: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast);
}

.toolbar__background:hover {
  background-color: var(--color-surface-alt);
  border-color: var(--color-accent);
  color: var(--color-text);
}