/* Skip Links para navegación por teclado */
.skip-links {
  position: absolute;
  top: -40px;
  left: 6px;
  z-index: 10000;
}

.skip-link {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  background: var(--primary-color);
  color: white;
  padding: 8px 16px;
  text-decoration: none;
  border-radius: 4px;
  font-weight: 600;
  transition: all 0.2s ease;
}

.skip-link:focus {
  position: static;
  left: auto;
  width: auto;
  height: auto;
  overflow: visible;
  clip: auto;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

/* Focus indicators mejorados */
*:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
  border-radius: 4px;
}

button:focus-visible,
.btn:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

a:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
  text-decoration: underline;
  background-color: rgba(37, 99, 235, 0.05);
}

.nav-link:focus-visible {
  background-color: rgba(37, 99, 235, 0.1);
  border-radius: 6px;
}

/* Screen reader only */
.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;
}