/* ==========================================================================
   base.css — Reinicio mínimo y estilos globales.
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: var(--text-md);
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
  overflow: hidden; /* la aplicación ocupa toda la ventana */
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
}

h1,
h2,
h3,
p {
  margin: 0;
}

canvas {
  display: block;
}

[hidden] {
  display: none !important;
}

/* Foco visible solo con teclado */
:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

/* Texto solo para lectores de pantalla */
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Enlace para saltar al contenido (accesibilidad) */
.skip-link {
  position: absolute;
  left: 8px;
  top: -40px;
  z-index: 100;
  padding: 8px 12px;
  background: var(--accent);
  color: var(--accent-text);
  border-radius: var(--radius-sm);
  text-decoration: none;
}

.skip-link:focus {
  top: 8px;
}

.icon {
  flex-shrink: 0;
  display: block;
}

kbd {
  display: inline-block;
  min-width: 1.6em;
  padding: 1px 6px;
  border: 1px solid var(--border-strong);
  border-bottom-width: 2px;
  border-radius: 5px;
  background: var(--surface-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-align: center;
  white-space: nowrap;
}

.noscript {
  padding: var(--space-5);
  text-align: center;
}

/* Respeta la preferencia de reducir animaciones */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}