/* World-mounted reading surfaces. Palette and typeface come from existing tokens.
   The projection module owns each face's inline dimensions and transform. */
.diegetic-surface {
  position: fixed !important;
  inset: auto !important;
  top: 0 !important;
  left: 0 !important;
  min-width: 0 !important;
  min-height: 0 !important;
  max-width: none !important;
  max-height: none !important;
  margin: 0 !important;
  border: 0 !important;
  border-radius: 0 !important;
  box-shadow: none !important;
  background: var(--paper);
  color: var(--ink);
  transform-origin: 0 0 !important;
  animation: none !important;
  transition: none !important;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  scroll-padding-top: 88px;
  pointer-events: auto;
  touch-action: pan-y;
  container-name: diegetic-face;
  container-type: inline-size;
  isolation: isolate;
}

dialog.diegetic-surface::backdrop {
  background: transparent !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}

/* WebGL geometry cannot occlude unrelated DOM. Only the inspected HTML face
   may paint over the scene; the welcome returns when its board is selected. */
body.world-inspecting :is(#welcome, #studio-preview):not(.diegetic-surface) {
  visibility: hidden !important;
  pointer-events: none !important;
}

.diegetic-surface :is(button, a, input, select, summary):focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: -3px;
}

.diegetic-surface :is(article, .map-content) {
  width: 100%;
  max-width: none;
  min-width: 0;
  margin: 0;
  padding: 24px 40px 48px;
}

.diegetic-surface:is(#reader, #project-reader, #place-reader, #world-map) > .reader-top {
  position: sticky;
  top: 0;
  min-height: 72px;
  margin: 0;
  padding: 12px 24px;
  gap: 12px;
  flex-wrap: wrap;
  background: var(--paper);
  z-index: 3;
}

.diegetic-surface .reader-top .mode-switch {
  position: static;
  margin: 0;
}

.diegetic-surface .case-header {
  padding-top: 16px;
}

.diegetic-surface .case-meta,
.diegetic-surface .case-sections,
.diegetic-surface .case-footer {
  flex-wrap: wrap;
}

.diegetic-surface :is(h1, h2, h3, p, summary, figcaption, label) {
  overflow-wrap: anywhere;
}

.diegetic-surface :is(img, svg, video) {
  max-width: 100%;
}

.diegetic-surface .map-layout {
  grid-template-columns: minmax(0, 1fr) minmax(260px, .95fr);
  gap: 28px;
}

.diegetic-surface .map-destinations,
.diegetic-surface .map-stop,
.diegetic-surface .map-destinations button {
  min-width: 0;
}

#welcome.diegetic-surface {
  padding: 28px 32px;
  scroll-padding-top: 20px;
}

#welcome.diegetic-surface > .mode-switch {
  position: static;
  margin: 0 0 20px;
}

#welcome.diegetic-surface h1 {
  font-size: clamp(32px, 6.8cqw, 56px);
}

#welcome.diegetic-surface > p.mobile-play-note {
  position: static;
  inset: auto;
  max-width: none;
  margin: 0 0 20px;
}

#welcome.diegetic-surface .welcome-links {
  gap: 0 20px;
}

#welcome.diegetic-surface .loading-state {
  max-width: 100%;
}

#help.diegetic-surface {
  padding: 24px 28px;
  scroll-padding-top: 64px;
}

#help.diegetic-surface #help-back {
  position: static;
  margin: 0 0 24px;
}

#help.diegetic-surface > #help-close {
  position: sticky;
  top: 0;
  right: auto;
  float: right;
  min-width: 44px;
  min-height: 44px;
  margin: 0 0 12px 12px;
  justify-content: center;
  background: var(--paper);
  z-index: 4;
}





#interact.diegetic-surface {
  padding: 14px 18px;
  text-align: left;
  overflow: hidden;
}

/* A studio remains one full board face: controls at either edge, body scrolling
   between them. The old viewport-side panel and mobile two-column layout do not
   determine the physical display's composition. */
#studio-preview.diegetic-surface {
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden !important;
}

#studio-preview.diegetic-surface .studio-preview-heading {
  position: sticky;
  top: 0;
  flex: none;
  padding: 8px 16px 4px 24px;
  background: var(--paper);
  z-index: 2;
}

#studio-preview.diegetic-surface .studio-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  flex: none;
  overflow: visible;
  padding: 0 24px 12px;
}

#studio-preview.diegetic-surface .studio-tabs button {
  min-width: 0;
}

#studio-preview.diegetic-surface .studio-preview-scroll {
  flex: 1 1 0;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 0 24px 24px;
}

#studio-preview.diegetic-surface .studio-preview-content {
  display: block;
}

#studio-preview.diegetic-surface .studio-artifact {
  margin: 0 0 18px;
}

#studio-preview.diegetic-surface .studio-artifact img {
  max-height: 280px;
}

#studio-preview.diegetic-surface .studio-preview-actions {
  position: sticky;
  bottom: 0;
  flex: none;
  padding: 12px 24px;
  background: var(--paper);
  z-index: 2;
}

/* These semantic buttons are hit targets for labels already rendered on a
   physical face. A keyboard outline remains visible on the exact same face. */
body.diegetic-active .guide-hit {
  position: fixed !important;
  inset: auto !important;
  top: 0 !important;
  left: 0 !important;
  min-width: 0 !important;
  min-height: 0 !important;
  max-width: none !important;
  max-height: none !important;
  margin: 0 !important;
  padding: 0 !important;
  border: 0 !important;
  border-radius: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
  color: transparent !important;
  text-shadow: none !important;
  transform-origin: 0 0 !important;
  animation: none !important;
  transition: none !important;
  pointer-events: auto;
  touch-action: manipulation;
}

body.diegetic-active .guide-hit > *,
body.diegetic-active .guide-hit::before,
body.diegetic-active .guide-hit::after {
  opacity: 0 !important;
}

body.diegetic-active .guide-hit:focus-visible {
  outline: 3px solid var(--accent) !important;
  outline-offset: 3px;
}

/* Keep status announcements and existing keyboard targets in the document.
   Focus restores a control's existing readable layout when a keyboard user
   reaches it; an unseen, focusable button must never become a keyboard trap. */
body.diegetic-active :is(#route-hint, #touch-controls, #notice, #ride-status):not(:focus-within) {
  position: absolute !important;
  inset: auto !important;
  top: 0 !important;
  left: 0 !important;
  width: 1px !important;
  height: 1px !important;
  min-width: 0 !important;
  min-height: 0 !important;
  max-width: none !important;
  max-height: none !important;
  margin: -1px !important;
  padding: 0 !important;
  border: 0 !important;
  overflow: hidden !important;
  clip-path: inset(50%) !important;
  white-space: nowrap !important;
  transform: none !important;
  box-shadow: none !important;
  opacity: 1 !important;
  pointer-events: none !important;
}

@container diegetic-face (max-width: 620px) {
  .diegetic-surface :is(article, .map-content) {
    padding: 16px 16px 32px;
  }

  .diegetic-surface:is(#reader, #project-reader, #place-reader, #world-map) > .reader-top {
    padding: 10px 16px;
    min-height: 64px;
    gap: 8px;
  }

  .diegetic-surface :is(.case-header h1, .map-content h1),
  #welcome.diegetic-surface h1 {
    font-size: 32px;
    line-height: 1.13;
  }

  .diegetic-surface .map-layout,
  .diegetic-surface .project-chooser {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .diegetic-surface .case-meta {
    gap: 16px;
  }

  .diegetic-surface .case-sections {
    gap: 12px 18px;
    margin-bottom: 32px;
  }

  .diegetic-surface .project-sections .case-note {
    margin-left: 0;
  }

  .diegetic-surface .camera-controls,
  .diegetic-surface .music-controls {
    flex-wrap: wrap;
  }

  #studio-preview.diegetic-surface .studio-preview-heading,
  #studio-preview.diegetic-surface .studio-preview-actions {
    padding-inline: 16px;
  }

  #studio-preview.diegetic-surface .studio-tabs {
    padding-inline: 16px;
  }

  #studio-preview.diegetic-surface .studio-preview-scroll {
    padding: 0 16px 16px;
  }
}

/* Container queries cannot style the container itself. These width-independent
   values keep small direct-content surfaces comfortable at every face size. */
@media (max-width: 700px) {
  #welcome.diegetic-surface,
  #help.diegetic-surface {
    padding: 16px;
  }

  #welcome.diegetic-surface > p.mobile-play-note {
    display: block;
  }

  #help.diegetic-surface dl div {
    gap: 12px;
    flex-wrap: wrap;
  }

  #help.diegetic-surface dt {
    flex-basis: 130px;
  }

  

  
}