flxn-app/public/styles.css

* {
  overscroll-behavior: none;
}

/* Keep app chrome non-selectable so iOS long-press doesn't open the
   edit menu (AutoFill/Copy/Siri). Inputs and opted-in regions stay
   selectable. */
body {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

input,
textarea,
[contenteditable="true"],
[contenteditable=""],
[data-selectable],
[data-selectable] * {
  -webkit-touch-callout: default;
  -webkit-user-select: text;
  user-select: text;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.app {
  transition: transform 500ms cubic-bezier(0.32, 0.72, 0, 1), 
              border-radius 500ms cubic-bezier(0.32, 0.72, 0, 1);
  transform: scale(1) translateY(0);
  border-radius: 0;
  will-change: transform;
}

.app.drawer-scaling,
[data-drawer-level].drawer-scaling {
  transform: scale(0.94) translateY(-8px);
  border-radius: 12px;
  overflow: hidden;
}

[data-drawer-level="2"].drawer-scaling {
  transform: scale(0.92) translateY(-6px);
}

[data-drawer-level="3"].drawer-scaling {
  transform: scale(0.90) translateY(-4px);
}

/* keep the page tappable mid-transition (rapid tab switching) */
::view-transition {
  pointer-events: none;
}

/* Theme texture overlays (scanlines, rays, grain) paint ABOVE all content; a
   real element with its own transition group keeps them on top and static
   mid-transition — a body::before overlay sinks into the root snapshot and
   blinks off the content for the duration of every transition. */
.flxn-theme-overlay {
  position: fixed;
  pointer-events: none;
  view-transition-name: theme-overlay;
}

/* Root (wallpaper + tab bar) is identical across routes — swap it instantly
   instead of crossfading; Safari's plus-lighter blend of the pair dims the
   whole backdrop mid-fade. Same explicit-state treatment for the header and
   theme overlay. */
::view-transition-old(root),
::view-transition-old(app-header),
::view-transition-old(theme-overlay) {
  animation: none;
  opacity: 0;
}
::view-transition-new(root),
::view-transition-new(app-header),
::view-transition-new(theme-overlay) {
  animation: none;
  opacity: 1;
  mix-blend-mode: normal;
}
::view-transition-image-pair(root),
::view-transition-image-pair(app-header),
::view-transition-image-pair(theme-overlay),
::view-transition-image-pair(page) {
  isolation: auto;
}

::view-transition-old(page),
::view-transition-new(page) {
  animation-duration: 180ms;
  animation-timing-function: cubic-bezier(0.32, 0.72, 0, 1);
  mix-blend-mode: normal;
}

/* content pushes edge-to-edge over the static theme background; panes stay
   transparent so the background never appears to move. The header is not in
   these rules on purpose: it crossfades in place (its own group's default) —
   sliding its chrome reads as a band appearing on continuous-bg themes */
html[data-nav-direction="forward"]::view-transition-old(page) {
  animation: 250ms cubic-bezier(0.32, 0.72, 0, 1) both flxn-page-out-left;
}
html[data-nav-direction="forward"]::view-transition-new(page) {
  animation: 250ms cubic-bezier(0.32, 0.72, 0, 1) both flxn-page-in-right;
}
html[data-nav-direction="back"]::view-transition-old(page) {
  animation: 250ms cubic-bezier(0.32, 0.72, 0, 1) both flxn-page-out-right;
}
html[data-nav-direction="back"]::view-transition-new(page) {
  animation: 250ms cubic-bezier(0.32, 0.72, 0, 1) both flxn-page-in-left;
}

/* a header appearing or disappearing rides with its page instead of popping;
   opacity overrides the pinned instant-swap defaults above */
html[data-nav-direction="forward"][data-header-vt="exit"]::view-transition-old(app-header) {
  animation: 250ms cubic-bezier(0.32, 0.72, 0, 1) both flxn-page-out-left;
  opacity: 1;
}
html[data-nav-direction="back"][data-header-vt="exit"]::view-transition-old(app-header) {
  animation: 250ms cubic-bezier(0.32, 0.72, 0, 1) both flxn-page-out-right;
  opacity: 1;
}
html[data-nav-direction="forward"][data-header-vt="enter"]::view-transition-new(app-header) {
  animation: 250ms cubic-bezier(0.32, 0.72, 0, 1) both flxn-page-in-right;
}
html[data-nav-direction="back"][data-header-vt="enter"]::view-transition-new(app-header) {
  animation: 250ms cubic-bezier(0.32, 0.72, 0, 1) both flxn-page-in-left;
}

@keyframes flxn-page-out-left {
  to { transform: translateX(-100%); }
}
@keyframes flxn-page-in-right {
  from { transform: translateX(100%); }
}
@keyframes flxn-page-out-right {
  to { transform: translateX(100%); }
}
@keyframes flxn-page-in-left {
  from { transform: translateX(-100%); }
}

@keyframes flxn-vt-fade-out {
  to { opacity: 0; }
}
@keyframes flxn-vt-fade-in {
  from { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  ::view-transition-group(*),
  ::view-transition-image-pair(*) {
    animation: none !important;
  }

  ::view-transition-old(*) {
    animation: 120ms ease both flxn-vt-fade-out !important;
    z-index: auto !important;
  }

  ::view-transition-new(*) {
    animation: 120ms ease both flxn-vt-fade-in !important;
  }

  ::view-transition-old(root),
  ::view-transition-old(app-header),
  ::view-transition-old(theme-overlay),
  ::view-transition-new(root),
  ::view-transition-new(app-header),
  ::view-transition-new(theme-overlay) {
    animation: none !important;
  }

  .app,
  [data-drawer-level] {
    transition: none;
  }

  .app.drawer-scaling,
  [data-drawer-level].drawer-scaling {
    transform: none;
    border-radius: 0;
  }

  [data-vaul-drawer],
  [data-vaul-overlay] {
    animation: none !important;
    transition: none !important;
  }

  @keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(0deg); }
  }
}