/* base.css — reset mínimo + tipografía base. No tocar layout acá. */
*, *::before, *::after { box-sizing: border-box; }

* { margin: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  font-size: var(--body);
  line-height: 1.5;
  color: var(--ink);
  background: var(--paper);
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a { color: inherit; }

a:hover { text-decoration: underline; }

:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 3px;
}

h1, h2, h3 { line-height: 1.05; font-weight: 400; }

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