/* Shared app navigation. App tools remain independent of the back control. */
:root { --paus-page-inset: 16px; }
.paus-shell {
  padding-left: max(var(--paus-page-inset), env(safe-area-inset-left));
  padding-right: max(var(--paus-page-inset), env(safe-area-inset-right));
}
.paus-nav {
  display: grid;
  grid-template-columns: minmax(44px, 1fr) auto minmax(44px, 1fr);
  align-items: center;
  gap: 8px;
  width: 100%;
  min-height: 60px;
  padding: 0;
  margin: 0;
  border: 0;
  color: var(--paus-nav-ink, #20242d);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
.paus-nav-wide {
  width: calc(100% - 2 * max(var(--paus-page-inset), env(safe-area-inset-left), env(safe-area-inset-right)));
  max-width: var(--paus-nav-width, 1080px);
  margin-inline: auto;
  padding-top: env(safe-area-inset-top);
  min-height: calc(60px + env(safe-area-inset-top));
}
.paus-nav-title {
  font-family: inherit;
  font-size: 17px;
  font-weight: 650;
  letter-spacing: -.4px;
  line-height: 1.2;
  text-decoration: none;
  color: inherit;
  margin: 0;
}
body.playing > .paus-nav-atlas { display: none; }
.paus-nav-actions {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  justify-self: end;
  gap: 2px;
}
.paus-back {
  --back-ink: #20242d;
  --back-surface: #f8f8fa;
  --back-glass: rgb(255 255 255 / 88%);
  --back-edge: rgb(255 255 255 / 88%);
  --back-shadow: 0 3px 10px rgb(30 30 45 / 7%), inset 0 1px 0 rgb(255 255 255 / 90%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  justify-self: start;
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  min-height: 44px;
  margin: 0;
  padding: 0;
  border: 1px solid var(--back-edge);
  border-radius: 50%;
  background: var(--back-surface);
  color: var(--back-ink);
  box-shadow: var(--back-shadow);
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition: transform 140ms ease, box-shadow 140ms ease;
}
.paus-back > svg {
  display: block;
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.paus-back:focus-visible { outline: 3px solid #315cda; outline-offset: 4px; }
.paus-back:active { transform: scale(.94); }
@supports ((backdrop-filter: blur(16px)) or (-webkit-backdrop-filter: blur(16px))) {
  .paus-back {
    background: var(--back-glass);
    -webkit-backdrop-filter: blur(16px) saturate(160%);
    backdrop-filter: blur(16px) saturate(160%);
  }
}
html[data-theme="dark"] .paus-back {
  --back-ink: #f6f6f8;
  --back-surface: #303238;
  --back-glass: rgb(55 58 65 / 88%);
  --back-edge: rgb(255 255 255 / 19%);
  --back-shadow: 0 3px 10px rgb(0 0 0 / 16%), inset 0 1px 0 rgb(255 255 255 / 12%);
}
@media (prefers-color-scheme: dark) {
  html[data-theme="system"] .paus-back {
    --back-ink: #f6f6f8;
    --back-surface: #303238;
    --back-glass: rgb(55 58 65 / 88%);
    --back-edge: rgb(255 255 255 / 19%);
    --back-shadow: 0 3px 10px rgb(0 0 0 / 16%), inset 0 1px 0 rgb(255 255 255 / 12%);
  }
}
@media (hover: hover) { .paus-back:hover { box-shadow: 0 4px 14px rgb(30 30 45 / 12%), inset 0 1px 0 rgb(255 255 255 / 55%); } }
@media (max-width: 374px) { :root { --paus-page-inset: 14px; } }
@media (max-width: 350px) { :root { --paus-page-inset: 8px; } }
@media (prefers-reduced-motion: reduce) { .paus-back { transition: none; } }
@media (prefers-reduced-transparency: reduce) {
  .paus-back { background: var(--back-surface); -webkit-backdrop-filter: none; backdrop-filter: none; }
}
@media (forced-colors: active) {
  .paus-back { color: LinkText; background: Canvas; border: 1px solid LinkText; box-shadow: none; -webkit-backdrop-filter: none; backdrop-filter: none; }
}

html[data-theme="dark"] .paus-nav { --paus-nav-ink: #f6f6f8; }
@media (prefers-color-scheme: dark) { html[data-theme="system"] .paus-nav { --paus-nav-ink: #f6f6f8; } }