/* Reset + base — shared across all pages */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html, body { height: 100%; }
html { -webkit-text-size-adjust: 100%; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-sans);
  font-size: var(--type-body-large);
  line-height: 1.5;
  color: var(--color-on-background);
  background: var(--color-background);
  text-rendering: optimizeLegibility;
}

img, svg, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: 0; padding: 0; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }

:focus-visible {
  outline: 2px solid var(--color-on-background);
  outline-offset: 3px;
  border-radius: 2px;
}

/* Landmarks/sections/headings que sólo son focusables como destino de anchors:
   sin outline cuando reciben foco programático — el feedback ya viene del scroll.
   Los focusables nativos (a, button, input) conservan su outline. */
:where(main, section, h2)[tabindex="-1"]:focus { outline: none; }

::selection { background: var(--acid-400); color: var(--ink-1000); }

/* Skip link */
.skip-link {
  position: absolute;
  left: var(--space-lg);
  top: var(--space-lg);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-on-background);
  color: var(--color-background);
  border-radius: var(--radius-md);
  font-weight: 600;
  transform: translateY(-200%);
  transition: transform .15s;
  z-index: 100;
}
.skip-link:focus { transform: translateY(0); }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}