/* ==========================================================================
   BASE — reset, tipografia, elementos fundamentais
   ========================================================================== */

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

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.5;
  color: var(--hl-ink);
  background: var(--hl-cream);
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 var(--sp-3);
  color: var(--hl-ink);
}

h1 { font-size: var(--fs-2xl); }
h2 { font-size: var(--fs-xl); }
h3 { font-size: var(--fs-lg); }

p { margin: 0 0 var(--sp-3); }

a { color: inherit; text-decoration: none; }

button, input, select, textarea { font-family: inherit; font-size: inherit; }

button { cursor: pointer; border: none; background: none; }

ul, ol { margin: 0; padding: 0; list-style: none; }

/* Acessibilidade: foco visível sempre, nunca remover sem substituir */
:focus-visible {
  outline: 3px solid var(--hl-info);
  outline-offset: 2px;
}

/* Respeitar utilizadores que pedem menos movimento */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--sp-4);
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Alvo de toque mínimo — regra de ouro do checklist mobile */
button, a.btn, .tap-target {
  min-height: var(--touch-min);
}