/* Accessibility layer — global focus visibility + skip link.
   Loaded last so the focus ring wins over component `outline: none` rules. */

/* Keyboard focus ring for every interactive control. Pointer focus stays clean
   thanks to :focus-visible. */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible,
[role="button"]:focus-visible,
.tab-btn:focus-visible,
.nav-overlay__item:focus-visible,
.desktop-sidebar__item:focus-visible,
.desktop-sidebar__toggle:focus-visible,
.desktop-sidebar__brand-btn:focus-visible,
.lfg-card:focus-visible,
.world-node:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-ring-color);
  outline-offset: var(--focus-ring-offset);
  border-radius: var(--radius-sm);
}

/* For controls that sit on busy imagery, add a dark halo so the ring is legible
   on any background. */
.tab-btn:focus-visible,
.nav-overlay__item:focus-visible,
.desktop-sidebar__item:focus-visible,
.desktop-sidebar__toggle:focus-visible,
.desktop-sidebar__brand-btn:focus-visible,
.world-island-node-host:focus-visible,
.lfg-card:focus-visible {
  box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.55);
}

/* Never leave a focusable control with no visible indicator. */
:focus-visible {
  outline-color: var(--focus-ring-color);
}

/* Skip link — visually hidden until focused. */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: var(--z-toast);
  padding: 10px 16px;
  background: var(--accent);
  color: #04121a;
  font-weight: 600;
  border-radius: var(--radius-md);
  text-decoration: none;
  transform: translateY(-150%);
  transition: transform 160ms var(--ease-out-expo);
}

.skip-link:focus {
  transform: translateY(0);
  outline: var(--focus-ring-width) solid var(--focus-ring-color);
  outline-offset: var(--focus-ring-offset);
}

/* Landmark wrapper must not affect the existing flex layout. */
.app-main {
  display: contents;
}

/* Screen-reader-only utility. */
.sr-only {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}