/**
 * STREET DOGS | Craft Hot Dogs & Urban Diner
 * Base Styles & Accessibility Foundations
 */

:root {
  --header-height: 84px;
}

/* Enlace accesible para saltar al contenido principal */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  background-color: var(--color-primary);
  color: hsl(0, 0%, 100%);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
  z-index: 9999;
  text-decoration: none;
  box-shadow: var(--shadow-lg);
  transition: top var(--transition-fast);
}

.skip-link:focus-visible {
  top: var(--space-4);
  outline: 3px solid var(--color-secondary);
  outline-offset: 2px;
}

/* Foco accesible de alto contraste */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Selección de texto elegante */
::selection {
  background-color: var(--color-primary);
  color: hsl(0, 0%, 100%);
}

/* Scroll margin top para que anclas no queden tapadas por el header sticky */
section[id],
article[id],
div[id] {
  scroll-margin-top: calc(var(--header-height) + var(--space-6));
}

/* Scrollbar sutil y moderno */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-pill);
  border: 2px solid var(--color-bg);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* Estado bloqueado de scroll para modal/menú móvil */
body.scroll-locked {
  overflow: hidden;
  touch-action: none;
}