/* ==========================================================================
   Footer / back-to-top
   ========================================================================== */
.site-footer { margin-top: 1.5rem; }
.footer-divider { border-top: 1px dashed var(--line-divider); margin: 0 2rem 1rem; }
.footer-body { text-align: center; font-size: 0.85rem; color: var(--text-50); display: flex; flex-direction: column; gap: 0.4rem; padding-bottom: 1.5rem; }
.footer-links, .footer-credit { display: flex; flex-wrap: wrap; gap: 0.5rem; justify-content: center; align-items: center; }
.footer-links a, .footer-credit a { color: var(--primary); font-weight: 500; }

.back-to-top {
  position: fixed; right: 1.25rem; bottom: 1.25rem; z-index: 60;
  opacity: 0; transform: translateY(10px) scale(0.9); pointer-events: none;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.back-to-top.show { opacity: 1; transform: none; pointer-events: auto; }

/* ==========================================================================
   Animation + transitions
   ========================================================================== */
/* `backwards`, not `both`: a filled animation keeps an identity transform on
   the element, which would capture `position: fixed` descendants (the TOC). */
.onload-animation { animation: fade-up 500ms var(--ease) backwards; }
@keyframes fade-up { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }

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

/* pjax: fade the panel out while the next page is fetched; the fresh panel
   fades back in through the .onload-animation on its content wrapper */
#content-panel.pjax-leaving { opacity: 0; transition: opacity 150ms var(--ease); }

@media (max-width: 1023px) {
  body:not(.is-home) #wallpaper-wrapper { display: none; }
  /* without the banner the panel has to clear the bar itself — 1rem of air on
     top of the bar (upstream's --content-top: 5.5rem = bar + 1rem), otherwise
     the first card sits on the bar's bottom edge */
  body:not(.is-home) #content-panel { margin-top: calc(var(--navbar-h) + 1rem); }
  html[data-wallpaper-mode="none"] #content-panel { margin-top: calc(var(--navbar-h) + 1rem); }
}