/* Floating scroll-to-top — portals + landing */

.scroll-to-top {
  position: fixed;
  bottom: calc(1.25rem + env(safe-area-inset-bottom, 0px));
  right: calc(1.25rem + env(safe-area-inset-right, 0px));
  z-index: 350;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--dash-border, #e5e7eb);
  border-radius: 50%;
  background: var(--dash-card, #ffffff);
  color: var(--dash-green, #0d6b38);
  box-shadow: 0 8px 24px rgba(16, 24, 40, 0.12), 0 2px 8px rgba(16, 24, 40, 0.06);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease, background 0.15s ease;
}

.scroll-to-top svg {
  width: 20px;
  height: 20px;
}

.scroll-to-top:hover {
  background: #f9fafb;
}

.scroll-to-top:focus-visible {
  outline: 2px solid var(--dash-green, #0d6b38);
  outline-offset: 2px;
}

.scroll-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

body.admin-nav-open .scroll-to-top,
body.user-nav-open .scroll-to-top {
  opacity: 0 !important;
  visibility: hidden !important;
  pointer-events: none;
}

/* Sit above PWA reload FAB when both are shown */
html.is-pwa .scroll-to-top {
  bottom: calc(4.75rem + env(safe-area-inset-bottom, 0px));
}

@media (prefers-color-scheme: dark) {
  .scroll-to-top {
    background: rgba(17, 24, 39, 0.95);
    border-color: #374151;
    color: #6ee7b7;
  }

  .scroll-to-top:hover {
    background: #1f2937;
  }
}