/* =========================================================
   base.css — reset, tipografia e utilitários
   ========================================================= */

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

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  /* Âncoras (#trabalhos etc.) param abaixo da nav fixa — vale também
     para quem chega pela URL com # ou navega pelo teclado */
  scroll-padding-top: var(--nav-h);
}

body {
  min-height: 100vh;
  background-color: var(--bg);
  /* Grid técnico sutil: linhas de 1px a cada 64px */
  background-image:
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: var(--grid-size) var(--grid-size);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden; /* garantia contra scroll horizontal */
}

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

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

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

ul[role="list"] { list-style: none; padding: 0; }

/* O atributo hidden sempre vence (mesmo com display: grid/flex no elemento) */
[hidden] { display: none !important; }

::selection { background: var(--accent); color: var(--on-accent); }

/* Foco visível para teclado (nunca remover) */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ---------- Tipografia ---------- */
h1, h2, h3 {
  font-weight: var(--fw-medium);
  letter-spacing: var(--tracking-title);
  line-height: var(--lh-tight);
  text-wrap: balance;
}

/* Palavra de destaque: serifa itálica na cor de destaque */
.serif-accent {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--accent);
}

.mono {
  font-family: var(--font-mono);
  letter-spacing: var(--tracking-mono);
}

/* ---------- Utilitários ---------- */
.container {
  width: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* Visível só para leitores de tela */
.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* Link "pular para o conteúdo" */
.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -100px;
  z-index: 100;
  padding: var(--space-2) var(--space-4);
  background: var(--accent);
  color: var(--on-accent);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  border-radius: var(--radius-pill);
}
.skip-link:focus { top: var(--space-4); }

/* Cursor piscando (usado no wordmark, terminal e log) */
.cursor {
  color: var(--accent);
  animation: blink var(--blink) steps(1, end) infinite;
}
@keyframes blink {
  50% { opacity: 0; }
}

/* ---------- Botões em pílula ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;              /* área de toque confortável */
  padding: 0.7rem 1.35rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: var(--fw-medium);
  line-height: 1;
  white-space: nowrap;
  transition:
    background-color var(--dur-fast) ease,
    border-color var(--dur-fast) ease,
    color var(--dur-fast) ease,
    transform var(--dur-fast) ease;
}
.btn:active { transform: translateY(1px); }

/* Foco por teclado: anel na cor de destaque, acompanhando a pílula */
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--radius-pill);
}

.btn--accent {
  background: var(--accent);
  color: var(--on-accent);
}
.btn--accent:hover,
.btn--accent:focus-visible { background: color-mix(in srgb, var(--accent) 82%, var(--papel)); }

.btn--outline {
  border: 1px solid var(--border);
  color: var(--text);
}
.btn--outline:hover,
.btn--outline:focus-visible {
  border-color: var(--text-muted);
  background: color-mix(in srgb, var(--papel) 5%, transparent);
}

.btn--sm {
  min-height: 38px;
  padding: 0.55rem 1rem;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
}

/* Seta que desliza no hover */
.btn .arrow { display: inline-block; transition: transform var(--dur-base) var(--ease-out); }
.btn:hover .arrow--right,
.btn:focus-visible .arrow--right { transform: translateX(3px); }
.btn:hover .arrow--down,
.btn:focus-visible .arrow--down  { transform: translateY(3px); }

/* ---------- Movimento reduzido ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  /* Cursor fica aceso, sem piscar */
  .cursor,
  .wordmark__cursor { animation: none; opacity: 1; }
}