/* Reset enxuto — só o necessário para uma landing */

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

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

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Helvetica, Arial, sans-serif;
  font-size: var(--text-base);
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--surface-default);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }

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

a { color: var(--brand-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

/* Foco visível universal */
:focus-visible {
  outline: 2px solid var(--brand-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Skip link — aparece ao receber foco do teclado */
.skip-link {
  position: absolute;
  top: -40px;
  left: var(--space-4);
  background: var(--brand-primary);
  color: var(--brand-on-primary);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  z-index: 100;
  transition: top var(--transition-fast);
}
.skip-link:focus { top: var(--space-4); }

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