/* ============================================
   GONHER - Accesibilidad WCAG
   Mejoras de accesibilidad sin romper estilos existentes
   ============================================ */

/* === SCREEN READER ONLY ===
   Oculta visualmente pero accesible para lectores de pantalla */
.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;
}

/* === SCREEN READER ONLY - FOCUSABLE ===
   Visible solo al recibir focus (para skip links) */
.sr-only-focusable:not(:focus):not(:focus-within) {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* === SKIP LINK ===
   Enlace "Saltar al contenido" visible solo con Tab */
.skip-link {
  position: fixed;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-skip-link, 1100);
  padding: 12px 24px;
  background: var(--accent-color, #1A73E8);
  color: #FFFFFF;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0 0 8px 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 0;
  outline: 2px solid #FFFFFF;
  outline-offset: 2px;
}

/* === FOCUS VISIBLE - ENLACES ===
   Outline visible para navegacion con teclado */
a:focus-visible {
  outline: 2px solid var(--accent-color, #1A73E8);
  outline-offset: 2px;
}

/* === FOCUS VISIBLE - FORM CONTROL FALLBACK ===
   Override seguro del outline: none en .form-control:focus */
.form-control:focus-visible {
  outline: 2px solid var(--accent-color, #1A73E8);
  outline-offset: 2px;
}

/* === FOCUS VISIBLE - BOTONES Y ELEMENTOS INTERACTIVOS === */
button:focus-visible,
[role="button"]:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent-color, #1A73E8);
  outline-offset: 2px;
}

/* === FOCUS VISIBLE - LOGIN INPUTS ===
   Los inputs del login usan outline: none inline */
.form-group input:focus-visible {
  outline: 2px solid var(--accent-color, #1A73E8);
  outline-offset: 2px;
}