/* Interface commune à charger sur chaque page actuelle et future. */
.family-topbar,
.photo-admin-header {
  position: sticky;
  z-index: 900;
  top: 0;
  isolation: isolate;
  box-shadow: 0 1px 0 rgba(244, 238, 223, .14), 0 9px 24px rgba(13, 43, 36, .13);
}

.family-topbar ~ main [id],
.photo-admin-header ~ main [id] {
  scroll-margin-top: var(--sticky-family-topbar-height, 116px);
}

.photo-admin-header nav {
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.photo-admin-header nav a[aria-current="page"] {
  border-bottom-color: var(--sun, #efad3f);
  color: var(--sun, #efad3f);
}

.photo-admin-header nav form {
  margin: 0;
}

.photo-admin-header nav button {
  border: 0;
  border-bottom: 1px solid rgba(244, 238, 223, .42);
  padding: 0;
  background: transparent;
  color: var(--cream, #f4eedf);
  font-family: var(--sans, Arial, sans-serif);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  cursor: pointer;
}

.photo-admin-header ~ main .photo-admin-intro,
.photo-admin-header ~ main .agenda-admin-intro {
  top: var(--sticky-family-topbar-height, 116px);
}

.back-to-top {
  position: fixed;
  z-index: 850;
  right: calc(clamp(1rem, 2.2vw, 2rem) + env(safe-area-inset-right, 0px));
  bottom: calc(clamp(1rem, 2.2vw, 2rem) + env(safe-area-inset-bottom, 0px));
  display: grid;
  width: 52px;
  height: 52px;
  border: 2px solid var(--forest-dark, #0d2b24);
  border-radius: 50%;
  padding: 0;
  background: var(--sun, #efad3f);
  color: var(--forest-dark, #0d2b24);
  box-shadow: 5px 6px 0 rgba(13, 43, 36, .2);
  font-family: var(--sans, Arial, sans-serif);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px) rotate(7deg);
  transition: opacity .22s ease, visibility .22s ease, transform .22s ease, box-shadow .22s ease;
  place-items: center;
  pointer-events: none;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) rotate(3deg);
  pointer-events: auto;
}

.back-to-top:hover {
  box-shadow: 2px 3px 0 rgba(13, 43, 36, .24);
  transform: translateY(-3px) rotate(-4deg);
}

.back-to-top:focus-visible {
  outline: 4px solid var(--cream, #f4eedf);
  outline-offset: 3px;
}

@media (max-width: 720px) {
  .family-topbar,
  .photo-admin-header {
    align-items: flex-start;
    flex-wrap: wrap;
    gap: .75rem;
  }

  .family-topbar nav,
  .photo-admin-header nav {
    align-items: center;
    flex: 0 0 100%;
    flex-flow: row nowrap;
    justify-content: flex-start;
    gap: .85rem;
    width: 100%;
    padding-bottom: .35rem;
    overflow-x: auto;
    scrollbar-width: thin;
  }

  .family-topbar nav > *,
  .photo-admin-header nav > * {
    flex: 0 0 auto;
  }

  .photo-admin-header ~ main .photo-admin-intro,
  .photo-admin-header ~ main .agenda-admin-intro {
    top: auto;
  }

  .back-to-top {
    width: 48px;
    height: 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .back-to-top {
    transition: none;
  }
}

@media print {
  .family-topbar,
  .photo-admin-header {
    position: static;
    box-shadow: none;
  }

  .back-to-top {
    display: none !important;
  }
}