/* ============================================================
   BTOO - Accessibilità (WCAG 2.2 AA)
   Skip link, focus visibile, utility sr-only. Non altera la grafica.
   ============================================================ */

/* Link "Salta al contenuto": nascosto finché non riceve focus da tastiera */
.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
  z-index: 100000;
}
.skip-link:focus {
  position: fixed;
  left: 12px;
  top: 12px;
  width: auto;
  height: auto;
  padding: .6rem 1rem;
  background: #1f2430;
  color: #fff;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
}

/* Focus visibile da tastiera su elementi interattivi (2.4.7 / 2.4.11) */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid #ffc107;
  outline-offset: 2px;
}

/* Testo solo per screen reader */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}