.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  background: var(--color-accent);
  color: var(--color-bg-primary);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--border-radius-sm);
  font-weight: var(--font-weight-bold);
  z-index: 9999;
  transition: top var(--transition-fast);
}
.skip-link:focus { top: var(--space-sm); }

:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-ring-offset);
}
:focus:not(:focus-visible) { outline: none; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}
.sr-only-focusable:focus {
  position: static;
  width: auto;
  height: auto;
  padding: inherit;
  margin: inherit;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media (forced-colors: active) {
  .card { border: 1px solid CanvasText; }
  .btn { border: 1px solid ButtonText; }
}

nav a, .btn, .sidebar a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}