/* WCAG 2.1 AA — capa global de accesibilidad */

/* --- Saltar al contenido (2.4.1) --- */
.a11y-skip-link {
  position: absolute;
  left: 0.75rem;
  top: 0.75rem;
  z-index: 10000;
  padding: 0.65rem 1rem;
  border-radius: 0.5rem;
  background: #0f172a;
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 0.15s ease;
}

.a11y-skip-link:focus,
.a11y-skip-link:focus-visible {
  transform: translateY(0);
  outline: 3px solid #fbbf24;
  outline-offset: 2px;
}

/* --- Foco visible global (2.4.7) --- */
:focus {
  outline: none;
}

:focus-visible {
  outline: 3px solid #1e4fd8;
  outline-offset: 2px;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible,
summary:focus-visible {
  outline: 3px solid #1e4fd8;
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(30, 79, 216, 0.2);
}

.commercial-field input:focus,
.commercial-field select:focus,
.commercial-field textarea:focus,
.form-control:focus,
.form-select:focus {
  outline: 3px solid #1e4fd8;
  outline-offset: 1px;
  box-shadow: 0 0 0 4px rgba(30, 79, 216, 0.18);
}

.bid-smart-search-input:focus-visible {
  outline: 3px solid #1e4fd8;
  outline-offset: 2px;
}

/* --- Contraste texto secundario (1.4.3) --- */
.text-muted,
.small.text-muted,
.commercial-footer-tagline,
.commercial-footer-credits,
.map-sidebar-meta,
#map-results-footnote {
  color: #475569 !important;
}

.commercial-page {
  --c-muted: #475569;
}

/* --- Reducción de movimiento (2.3.3) --- */
@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;
  }

  html {
    scroll-behavior: auto;
  }
}

/* --- Objetivo táctil mínimo 44px (2.5.5 AAA orientativo, 2.5.8 target size) --- */
.app-nav-toggle,
.commercial-nav-toggle,
.lang-switch a,
.commercial-lang-link,
.map-region-btn,
.bid-smart-search-btn {
  min-width: 44px;
  min-height: 44px;
}

.lang-switch a,
.commercial-lang-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.35rem 0.55rem;
}

/* --- Tablas de datos alternativas para gráficos (1.1.1) --- */
.a11y-chart-fallback:not(.visually-hidden) {
  margin-top: 0.75rem;
}

.a11y-chart-fallback.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.a11y-data-table {
  font-size: 0.875rem;
}

.a11y-data-table caption {
  caption-side: top;
  padding: 0.5rem 0;
  font-weight: 600;
  color: #0f172a;
}

/* --- Mapa: foco en zonas SVG --- */
.map-zone:focus,
.map-zone:focus-visible,
.map-province:focus,
.map-province:focus-visible {
  outline: 3px solid #1e4fd8;
  outline-offset: 2px;
  stroke: #1e4fd8 !important;
  stroke-width: 2px !important;
}

.map-legend {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.map-legend-item {
  font-size: 0.8125rem;
  color: #475569;
}

/* --- Solo lectura para pantalla --- */
.visually-hidden-focusable:not(:focus):not(:focus-within) {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* --- Estados de error visibles (3.3.1) --- */
.alert[role="alert"] {
  border-left: 4px solid currentColor;
}

.commercial-alert-error {
  border-left: 4px solid #b91c1c;
}

/* --- Iconos decorativos en botones --- */
.btn .a11y-decor,
.commercial-feature-tag .a11y-decor {
  speak: never;
}