/* ==========================================================================
   base.css — reset enxuto, tipografia e utilitários de estrutura.
   Depende de tokens.css. Nenhum valor literal de cor ou tamanho aqui.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Reset
   -------------------------------------------------------------------------- */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: var(--scroll-pad);
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--bone-text);
  font-family: var(--font-body);
  font-size: var(--size-body);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;            /* trava scroll horizontal em toda largura */
}

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

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

button, input, select, textarea { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }

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

/* --------------------------------------------------------------------------
   Foco — nunca remover. WCAG 2.2 AA.
   -------------------------------------------------------------------------- */

:focus-visible {
  outline: 2px solid var(--gold-light);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Em faixa clara o dourado claro some; o contorno vira bronze. */
.section--light :focus-visible,
.section--bone :focus-visible {
  outline-color: var(--gold-deep);
}

/* --------------------------------------------------------------------------
   Movimento reduzido — obrigatório
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}

/* --------------------------------------------------------------------------
   Tipografia
   Cinzel só aqui: h1–h3, eyebrow, botão. Sempre caixa alta, frase curta.
   -------------------------------------------------------------------------- */

.h1, .h2, .h3 {
  font-family: var(--font-display);
  text-transform: uppercase;
  text-wrap: balance;
}

.h1 {
  font-size: var(--size-h1);
  font-weight: 700;
  line-height: var(--leading-h1);
  letter-spacing: var(--track-title);
}

.h2 {
  font-size: var(--size-h2);
  font-weight: 600;
  line-height: var(--leading-h2);
  letter-spacing: var(--track-title);
}

.h3 {
  font-size: var(--size-h3);
  font-weight: 600;
  line-height: var(--leading-h3);
  letter-spacing: var(--track-h3);
}

/* Palavra em destaque dentro de um título. */
.h1 em, .h2 em {
  font-style: normal;              /* Cinzel não tem itálico */
  color: var(--gold-light);
}
.section--light .h1 em,
.section--light .h2 em,
.section--bone .h1 em,
.section--bone .h2 em {
  color: var(--gold-deep);
}

.eyebrow {
  display: block;
  font-family: var(--font-display);
  font-size: var(--size-eyebrow);
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: var(--track-eyebrow);
  text-transform: uppercase;
  color: var(--gold-mid);
  margin-bottom: var(--space-12);
}
.section--light .eyebrow,
.section--bone .eyebrow { color: var(--gold-deep); }

/* Filete dourado sob o eyebrow. */
.eyebrow::after {
  content: "";
  display: block;
  width: 64px;
  height: 1px;
  margin-top: var(--space-8);
  background: var(--gradient-gold);
}
.eyebrow--center { text-align: center; }
.eyebrow--center::after { margin-inline: auto; }

.lead {
  font-size: var(--size-body-l);
  max-width: var(--measure);
}

.prose p { max-width: var(--measure); }
.prose p + p { margin-top: var(--space-16); }

.small   { font-size: var(--size-small); }
.caption { font-size: var(--size-caption); letter-spacing: .01em; }

.muted { color: var(--gray-600); }
.section--dark .muted { color: var(--bone-text); opacity: .78; }

/* --------------------------------------------------------------------------
   Estrutura
   -------------------------------------------------------------------------- */

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

.section { padding-block: var(--section-y); }

/* Ritmo de fundos — alternância obrigatória, ver design.md §2 */
.section--dark  { background: var(--ink);      color: var(--bone-text); }
.section--deep  { background: var(--ink-deep); color: var(--bone-text); }
.section--light { background: var(--bone-50);  color: var(--ink); }
.section--bone  { background: var(--bone-100); color: var(--ink); }
.section--white { background: var(--white);    color: var(--ink); }

.section__head { margin-bottom: var(--space-48); }
.section__head--center { text-align: center; }
.section__head--center .lead { margin-inline: auto; }

.title-gap  { margin-top: var(--space-12); }
.body-gap   { margin-top: var(--space-16); }
.cta-gap    { margin-top: var(--space-32); }

@media (min-width: 768px) {
  .section__head { margin-bottom: var(--space-64); }
  .title-gap { margin-top: var(--space-16); }
  .body-gap  { margin-top: var(--space-24); }
  .cta-gap   { margin-top: var(--space-40); }
}

.grid { display: grid; gap: var(--grid-gap); }
.grid--2 { grid-template-columns: 1fr; }
.grid--3 { grid-template-columns: 1fr; }

@media (min-width: 768px) {
  .grid--2, .grid--3 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
}

/* --------------------------------------------------------------------------
   Skip link — primeiro elemento focável
   -------------------------------------------------------------------------- */

.skip-link {
  position: absolute;
  left: var(--space-8);
  top: var(--space-8);
  z-index: 200;
  transform: translateY(-150%);
  padding: var(--space-12) var(--space-24);
  background: var(--gold-light);
  color: var(--ink);
  font-family: var(--font-display);
  font-size: var(--size-button);
  font-weight: 600;
  letter-spacing: var(--track-button);
  text-transform: uppercase;
  border-radius: var(--radius-md);
  transition: transform var(--dur-button) var(--ease-out);
}
.skip-link:focus { transform: translateY(0); }

/* --------------------------------------------------------------------------
   Acessível apenas para leitor de tela
   -------------------------------------------------------------------------- */

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   Entrada de seção — IntersectionObserver adiciona .is-visible
   -------------------------------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity   var(--dur-reveal) var(--ease-out),
    transform var(--dur-reveal) var(--ease-out);
}
.reveal.is-visible { opacity: 1; transform: none; }

/* Stagger em grid — máximo 6, ver design.md §10 */
.reveal[data-i="1"] { transition-delay: calc(var(--stagger) * 1); }
.reveal[data-i="2"] { transition-delay: calc(var(--stagger) * 2); }
.reveal[data-i="3"] { transition-delay: calc(var(--stagger) * 3); }
.reveal[data-i="4"] { transition-delay: calc(var(--stagger) * 4); }
.reveal[data-i="5"] { transition-delay: calc(var(--stagger) * 5); }

/* Sem JS, nada fica invisível. */
.no-js .reveal { opacity: 1; transform: none; }