/* Cross-feature accessibility policy. Loaded after feature styles so the
   user preference wins through normal cascade order. */

/* Floating "返回工作台" button — consistent always-visible navigation back to
   the workbench on every standalone module page. */
.back-to-workbench-fab {
  position: fixed;
  top: 16px;
  right: 24px;
  z-index: 100;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--border, #3f3f46);
  background: var(--bg-card, #18181b);
  color: var(--text-primary, #e4e4e7);
  font-size: 0.85rem;
  font-weight: 500;
  font-family: var(--font-body, inherit);
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.back-to-workbench-fab:hover {
  background: var(--bg-card-hover, #1e1e22);
  border-color: var(--border-hover, #52525b);
  transform: translateY(-1px);
}

@media (max-width: 640px) {
  .back-to-workbench-fab {
    top: 10px;
    right: 12px;
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
  }
}

.skip-link {
  position: fixed;
  z-index: 10000;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--surface, #fff);
  color: var(--focus-outline, #005fcc);
  box-shadow: var(--elev-raised, 0 8px 24px rgba(0, 0, 0, 0.18));
  transform: translateY(-160%);
  transition: transform var(--motion-fast, 160ms) var(--ease-standard, ease);
}

.skip-link:focus-visible {
  transform: translateY(0);
  outline: 3px solid var(--focus-outline, #005fcc);
  outline-offset: 3px;
}

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms;
    animation-iteration-count: 1;
    scroll-behavior: auto;
    transition-duration: 0.01ms;
  }

  :root {
    --motion-fast: 0ms;
    --motion-base: 0ms;
  }

  html {
    scroll-behavior: auto;
  }

  /* Entry and status motion is decorative; preserve the status itself. */
  .topbar,
  .hero,
  .status-card,
  .panel,
  .main-layout,
  .status-tip.loading,
  .snapshot-toast,
  .auth-submit .btn-spinner,
  .generation-progress-spinner,
  .generation-progress-card[data-tone="running"] .generation-progress-value,
  .st-loading-spinner,
  .gen-status-dot.active,
  .tab-pane.active,
  .revision-loading-spinner,
  #image-action-bar,
  .suite-stage.active,
  #step-image .lf-textarea-spinner,
  #step-image .image-gen-spinner {
    animation: none;
  }

  .gen-status-dot,
  .tab-pane,
  .st-mcp-status,
  .generation-progress-card .generation-progress-value,
  #step-image #image-gen-progress-fill,
  #step-image #image-queue-fill {
    transition: none;
  }
}