/* ==========================================================================
   Sitewide "Back to top" button. Injected by back-to-top.js on every page
   that loads it; no per-page markup. Fully self-contained and theme-agnostic
   so it works identically on a bare generated page (which loads nothing
   else) and on the light marketing pages and dark app themes.

   Every interactive state (normal / hover / focus / active / visible) pins
   its load-bearing properties with `!important`: not just colors but the
   `background` shorthand (so an app's `button { background: linear-gradient(...) }`
   cannot paint a gradient through our background-color), `transform` (so an
   app `button:hover { transform: translateY(-2px) }` cannot shift the button
   under the user's finger mid-tap), `box-shadow`, `transition`, `padding`,
   `border-radius`, and the box size. These are pinned per state because app
   themes set them per state too; without that the button is hijacked on
   hostile pages. On clean pages it looks identical to before.

   NOTE on position: `right`, `bottom` and `z-index` are deliberately NOT
   pinned with `!important`. In modal mode back-to-top.js MOVES the button
   into the scrolling modal container and sets `position`, `top`, `left`,
   `right`, `bottom` and `z-index` as inline styles to anchor it against the
   container's padding box and scroll with it; pinned `!important` rules would
   beat those inline values. The base z-index here (9000) is above app content
   but below app modals/nav.

   The `[hidden]` attribute is the hidden state, so the button is out of the
   tab order and hidden from assistive tech until it appears.
   ========================================================================== */
.back-to-top,
.back-to-top:link,
.back-to-top:visited,
.back-to-top:hover,
.back-to-top:focus,
.back-to-top:active,
.back-to-top:hover:active {
  position: fixed;
  bottom: calc(1.25rem + env(safe-area-inset-bottom, 0px));
  right: calc(1.25rem + env(safe-area-inset-right, 0px));
  z-index: 9000;
  display: -webkit-flex;
  display: flex;
  -webkit-align-items: center;
  align-items: center;
  -webkit-justify-content: center;
  justify-content: center;
  width: 44px !important;
  height: 44px !important;
  min-height: 44px !important;
  padding: 0 !important;
  margin: 0;
  border: solid 1px rgba(255, 255, 255, 0.16) !important;
  border-radius: 50% !important;
  background: #1f1f1f !important;
  color: #ffffff !important;
  box-shadow: 0 0.25rem 0.9rem rgba(0, 0, 0, 0.4) !important;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
  line-height: 1;
  text-decoration: none;
  opacity: 0;
  -webkit-transform: translateY(0.5rem) !important;
  transform: translateY(0.5rem) !important;
  transition: opacity 0.2s ease, transform 0.2s ease, background-color 0.18s ease, box-shadow 0.18s ease !important; }

.back-to-top[hidden] {
  display: none; }

.back-to-top svg {
  display: block;
  width: 20px;
  height: 20px;
  fill: none;
  stroke: #ffffff;
  stroke-width: 2.25;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: none; }

.back-to-top.back-to-top--visible {
  opacity: 1;
  -webkit-transform: translateY(0) !important;
  transform: translateY(0) !important; }

.back-to-top:hover,
.back-to-top.back-to-top--visible:hover {
  background: #333333 !important;
  color: #ffffff !important;
  border-color: rgba(255, 255, 255, 0.28) !important;
  box-shadow: 0 0.35rem 1.1rem rgba(0, 0, 0, 0.5) !important; }

.back-to-top:active,
.back-to-top:hover:active,
.back-to-top.back-to-top--visible:active,
.back-to-top.back-to-top--visible:hover:active {
  background: #161616 !important;
  color: #ffffff !important;
  -webkit-transform: translateY(0) !important;
  transform: translateY(0) !important; }

.back-to-top:focus {
  outline: none; }

.back-to-top:focus-visible {
  outline: 2px solid #4d8dff;
  outline-offset: 2px; }

@media (prefers-reduced-motion: reduce) {
  .back-to-top,
  .back-to-top:hover,
  .back-to-top:focus,
  .back-to-top:active {
    transition: opacity 0.01ms !important; } }