/*
 * Academia MG — base layer. Reset, document defaults, typography.
 * Depends on tokens.css.
 */

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

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
  min-height: 100vh;
  transition: background-color 180ms ease, color 180ms ease;
}

a,
button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

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

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Skip link — visible only on keyboard focus. */
.skip-link {
  background: var(--surface-strong);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  color: var(--text);
  left: 1rem;
  padding: 0.6rem 0.9rem;
  position: fixed;
  text-decoration: none;
  top: -5rem;
  transition: top 160ms ease;
  z-index: 100;
}

.skip-link:focus {
  top: 1rem;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}