/* ══════════════════════════════════════════════════════════════════
   A11Y — utilidades cross-app de accesibilidad para Medicina Toroidal
   ══════════════════════════════════════════════════════════════════
   - Skip-link visible solo con teclado (Tab) al inicio de cada página
   - focus-visible consistente para keyboard nav (anillo dorado sutil)
   - sr-only utility para texto solo para lectores de pantalla
   - Respeta prefers-reduced-motion donde corresponda

   Cargado desde index.html, ritual-del-alba.html, perfil.html,
   luna.html, biodescodificacion.html, curso-milagros.html.
   ══════════════════════════════════════════════════════════════════ */

/* ── Skip link ─────────────────────────────────────────────────── */
.skip-link {
  position: absolute;
  left: 0; top: 0;
  background: #f0cc60;
  color: #020617;
  padding: 0.7rem 1.2rem;
  font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  border-radius: 0 0 8px 0;
  z-index: 99999;
  transform: translateY(-100%);
  transition: transform 0.2s ease;
}
.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline: 2px solid #020617;
  outline-offset: 2px;
}

/* ── Focus visible global — anillo dorado sutil ──────────────── */
:focus-visible {
  outline: 2px solid rgba(240, 204, 96, 0.75);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Botones, links y campos focuseables: anillo dorado con backdrop sutil */
button:focus-visible,
a:focus-visible,
[role="button"]:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
summary:focus-visible {
  outline: 2px solid rgba(240, 204, 96, 0.85);
  outline-offset: 3px;
  box-shadow: 0 0 0 5px rgba(240, 204, 96, 0.18);
}

/* Quitar outline solo si el browser detecta input por mouse (no teclado) */
:focus:not(:focus-visible) {
  outline: none;
}

/* ── Solo lectores de pantalla ───────────────────────────────── */
.sr-only,
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0);
  white-space: nowrap; border: 0;
}

/* ── Botones-icono: asegurar área mínima de tap (44x44 WCAG AA) ─ */
button[aria-label]:empty,
button.icon-only,
a.icon-only {
  min-width: 44px;
  min-height: 44px;
}

/* ── prefers-reduced-motion: pausar animaciones largas ───────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.15s !important;
    scroll-behavior: auto !important;
  }
}

/* ── Alto contraste opcional (futuro: toggle) ────────────────── */
@media (prefers-contrast: more) {
  :root {
    --on-surface: #ffffff;
    --on-surface-dim: rgba(255,255,255,0.92);
    --on-surface-low: rgba(255,255,255,0.78);
  }
  :focus-visible {
    outline-width: 3px;
    outline-color: #ffd54f;
  }
}