/* base.css — reset, tipografia base, contêiner, utilitários */

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

* { margin: 0; }

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

body {
  background: var(--preto);
  color: var(--cinza-texto);
  font-family: var(--fonte-corpo);
  font-size: var(--txt-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 {
  font-family: var(--fonte-display);
  color: var(--texto-forte);
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-weight: 800;
  text-wrap: balance;
}

p { max-width: 65ch; }

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

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

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

:focus-visible {
  outline: 2px solid var(--acento);
  outline-offset: 2px;
}

::selection { background: var(--neon); color: var(--preto); }

.conteiner {
  max-width: var(--conteiner);
  margin-inline: auto;
  padding-inline: var(--pad-lateral);
}

.secao {
  padding-block: var(--e-9);
}

@media (min-width: 1024px) {
  .secao { padding-block: var(--e-11); }
}

.secao--profunda { background: var(--grafite); }

/* Link de pulo para conteúdo (a11y) */
.pular-link {
  position: absolute;
  top: -100%;
  left: var(--e-4);
  z-index: 100;
  padding: var(--e-3) var(--e-5);
  background: var(--neon);
  color: var(--preto);
  font-weight: 700;
  border-radius: var(--raio-md);
}
.pular-link:focus { top: var(--e-4); }

/* Revelação de entrada (design.md §15) — só transform e opacity */
.revelar {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--t-revelar) var(--curva-revelar),
              transform var(--t-revelar) var(--curva-revelar);
}
.revelar.visivel { opacity: 1; transform: translateY(0); }

/* Placeholder de conteúdo pendente — visível de propósito, nunca vai ao ar */
.a-definir {
  font-family: var(--fonte-mono);
  font-size: var(--txt-sm);
  color: var(--acento);
  background: rgba(218, 253, 85, 0.06);
  border: 1px dashed var(--neon-40);
  border-radius: var(--raio-sm);
  padding: 2px 8px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .revelar { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}