/* Shared bottom navigation, including iPhone safe area. */
body { padding-bottom: calc(108px + env(safe-area-inset-bottom, 0px)); }
html { scroll-padding-bottom: calc(108px + env(safe-area-inset-bottom, 0px)); }
.floating-nav {
  position: fixed;
  z-index: 50;
  bottom: calc(20px + env(safe-area-inset-bottom, 0px));
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 4px;
  width: max-content;
  max-width: calc(100% - 24px);
  box-sizing: border-box;
  padding: 8px;
  border: 1px solid #555;
  border-radius: 999px;
  background: #272727;
  box-shadow: 0 16px 40px #0004, 0 3px 10px #0002;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
.floating-nav a {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 48px;
  padding: 10px 26px;
  border-radius: 999px;
  color: #d1d1d6;
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.3;
  white-space: nowrap;
  transition: color .18s, background .18s;
  -webkit-tap-highlight-color: transparent;
}
.floating-nav a:hover { color: #fff; background: #ffffff14; }
.floating-nav a[aria-current="page"] { color: #202020; background: #fff; }
.floating-nav a:focus-visible { outline: 3px solid #90bfff; outline-offset: 2px; }
@media (max-width: 520px) {
  .floating-nav { width: calc(100% - 24px); padding: 6px; gap: 2px; }
  .floating-nav a { flex: 1 1 auto; min-width: 0; min-height: 46px; padding: 10px 8px; font-size: 14px; }
}
@media (max-width: 350px) {
  .floating-nav a { padding-inline: 6px; font-size: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  .floating-nav a { transition: none; }
}
@media print {
  .floating-nav { display: none; }
  body { padding-bottom: 0; }
}

/* Compact while reading; all destinations retain 44px touch targets. */
.floating-nav { transition: padding .2s, bottom .2s, box-shadow .2s; }
.floating-nav svg { display: none; width: 21px; height: 21px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.floating-nav.is-compact { width: max-content; padding: 4px; gap: 2px; bottom: calc(10px + env(safe-area-inset-bottom, 0px)); box-shadow: 0 6px 20px #0003; }
.floating-nav.is-compact a { flex: none; min-height: 44px; width: 44px; padding: 10px; }
.floating-nav.is-compact svg { display: block; }
.floating-nav.is-compact a span { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
@media (prefers-reduced-motion: reduce) { .floating-nav { transition: none; } }