/*
 * Audit 43 additive interaction layer.
 *
 * This file intentionally does not replace project styles. It supplies a
 * quiet cross-document transition and an opt-in reader view on an explicit
 * long-form allowlist.
 */
@view-transition {
  navigation: auto;
}

::view-transition-old(root) {
  animation: a43-page-out 110ms ease-out both;
}

::view-transition-new(root) {
  animation: a43-page-in 150ms ease-out both;
}

@keyframes a43-page-out {
  to { opacity: .92; }
}

@keyframes a43-page-in {
  from { opacity: .88; }
}

.a43-reader-control {
  position: fixed;
  z-index: 70;
  right: max(.7rem, env(safe-area-inset-right));
  bottom: max(.7rem, env(safe-area-inset-bottom));
  margin: 0;
  pointer-events: none;
}

.a43-reader-toggle {
  min-width: 44px;
  min-height: 44px;
  border: 1px solid color-mix(in srgb, currentColor 34%, transparent);
  border-radius: 999px;
  padding: .55rem .82rem;
  background: color-mix(in srgb, Canvas 92%, transparent);
  color: CanvasText;
  box-shadow: 0 8px 28px rgba(20, 16, 12, .14);
  font: 650 .78rem/1.1 system-ui, sans-serif;
  letter-spacing: .01em;
  pointer-events: auto;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.a43-reader-toggle:hover {
  border-color: currentColor;
}

.a43-reader-toggle:focus-visible {
  outline: 3px solid Highlight;
  outline-offset: 3px;
}

.a43-reader-toggle[aria-pressed="true"] {
  background: CanvasText;
  color: Canvas;
}

html.a43-reader-mode body[data-reader-eligible="true"] {
  --a43-reader-paper: color-mix(in srgb, Canvas 96%, #efe8d9);
  --a43-reader-ink: CanvasText;
  background: var(--a43-reader-paper) !important;
  color: var(--a43-reader-ink) !important;
}

html.a43-reader-mode body[data-reader-eligible="true"] :is(
  .mandala-bg,
  .mandala-field,
  .indra-bg,
  .indra-field,
  .geometry-layer,
  .bg-geometry,
  canvas[aria-hidden="true"]
) {
  opacity: .035 !important;
  filter: grayscale(1);
}

html.a43-reader-mode body[data-reader-eligible="true"] main {
  width: min(100% - 2rem, 78rem);
  margin-inline: auto;
}

html.a43-reader-mode body[data-reader-eligible="true"] main :is(
  p,
  li,
  blockquote,
  dd
) {
  max-width: 76ch;
  line-height: 1.72;
}

html.a43-reader-mode body[data-reader-eligible="true"] main :is(
  p,
  li,
  blockquote
) {
  text-wrap: pretty;
}

html.a43-reader-mode body[data-reader-eligible="true"] main :is(
  article,
  section,
  details,
  .card,
  .panel,
  .entry
) {
  scroll-margin-top: 1rem;
}

html.a43-reader-mode body[data-reader-eligible="true"] main img {
  max-width: min(100%, 56rem);
}

@media (max-width: 520px) {
  .a43-reader-control {
    right: max(.45rem, env(safe-area-inset-right));
    bottom: max(.45rem, env(safe-area-inset-bottom));
  }

  .a43-reader-toggle {
    padding-inline: .7rem;
  }

  html.a43-reader-mode body[data-reader-eligible="true"] main {
    width: min(100% - 1rem, 78rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation: none !important;
  }
}

@media print {
  .a43-reader-control {
    display: none !important;
  }
}

@media (forced-colors: active) {
  .a43-reader-toggle {
    forced-color-adjust: auto;
    border: 1px solid ButtonText;
    background: ButtonFace;
    color: ButtonText;
    box-shadow: none;
  }
}