/* ==========================================================================
   BASE · reset, tipografia, grade editorial e acessibilidade
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h-sm) + 2rem);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: var(--lh-heading);
  letter-spacing: var(--track-tight);
  color: inherit;
  margin: 0;
  text-wrap: balance;
}
h1 { font-size: var(--fs-h1); line-height: var(--lh-display); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
h4 { font-size: var(--fs-h4); font-family: var(--font-body); font-weight: 600; letter-spacing: 0; }

p { margin: 0 0 var(--space-sm); max-width: var(--measure); text-wrap: pretty; }
p:last-child { margin-bottom: 0; }

strong { font-weight: 700; }
em { font-style: italic; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }

:where(a, button, summary, [tabindex]):focus-visible {
  outline: 2px solid var(--brown-600);
  outline-offset: 4px;
  border-radius: var(--radius-small);
}
.is-inverted :where(a, button, summary):focus-visible { outline-color: var(--cream-100); }

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

/* Grade editorial de 12 colunas */
.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: clamp(1rem, 2.2vw, 2.25rem);
}

/* --- SUPERFÍCIES ---------------------------------------------------------- */
.band { padding-block: var(--space-2xl); position: relative; }
.band--tight { padding-block: clamp(4.5rem, 8vw, 8rem); }
.band--editorial { background: var(--bg-editorial); }
.band--anchor { background: var(--bg-anchor); color: var(--ink-inv); }
.band--anchor p { color: var(--ink-inv-2); }
.band--anchor strong { color: var(--white); }

/* --- ELEMENTOS EDITORIAIS ------------------------------------------------- */
.label {
  font-size: var(--fs-micro);
  font-weight: 700;
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  color: var(--ink-3);
  display: block;
}
.is-inverted .label { color: var(--ink-inv-3); }

.lead { font-size: var(--fs-lead); line-height: 1.48; color: var(--ink-2); max-width: 40ch; }
.is-inverted .lead { color: var(--ink-inv-2); }

.body-lg { font-size: calc(var(--fs-body) * 1.06); color: var(--ink-2); }
.quiet { color: var(--ink-3); }
.caption { font-size: var(--fs-caption); line-height: 1.55; color: var(--ink-3); }

.hairline { height: 1px; background: var(--line); border: 0; margin: 0; }
.is-inverted .hairline { background: var(--line-inv); }

/* --- ACESSIBILIDADE ------------------------------------------------------- */
.skip {
  position: absolute; left: 1rem; top: -6rem; z-index: 300;
  background: var(--brown-950); color: var(--cream-050);
  padding: 0.85rem 1.35rem; border-radius: var(--radius-medium);
  font-size: var(--fs-sm); transition: top var(--transition-fast);
}
.skip:focus { top: 1rem; }

.sr-only {
  position: absolute !important; 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;
}

/* --- REVEAL --------------------------------------------------------------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}
[data-reveal].shown { opacity: 1; transform: none; }

[data-reveal="mask"] { opacity: 1; transform: none; clip-path: inset(0 0 100% 0); transition: clip-path var(--transition-slow); }
[data-reveal="mask"].shown { clip-path: inset(0 0 0 0); }

[data-reveal="scale"] { opacity: 0; transform: scale(1.04); transition: opacity var(--transition-slow), transform var(--transition-slow); }
[data-reveal="scale"].shown { opacity: 1; transform: none; }

[data-delay="1"] { transition-delay: 110ms; }
[data-delay="2"] { transition-delay: 220ms; }
[data-delay="3"] { transition-delay: 330ms; }
[data-delay="4"] { transition-delay: 440ms; }
[data-delay="5"] { transition-delay: 550ms; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    transition-delay: 0ms !important;
  }
  [data-reveal] { opacity: 1 !important; transform: none !important; clip-path: none !important; }
}

/* A legenda pequena tinha só a cor de fundo claro. No rodapé, que é escuro,
   isso dava 3,47:1 e reprovava no AA. Aqui ela usa o par invertido. */
.is-inverted .caption { color: var(--ink-inv-3); }

/* --------------------------------------------------------------------------
   MARCADOR DE CAPÍTULO · o numeral que abre cada seção
   Mesma família e mesmo corpo do rótulo, para não virar elemento chamativo.
   O que separa é a cor secundária e um filete. É marcador, não ornamento.
   -------------------------------------------------------------------------- */
.label--cap { display: flex; align-items: baseline; }
.label__n {
  flex: none;
  margin-right: 0.85rem; padding-right: 0.85rem;
  border-right: 1px solid var(--line);
  color: var(--brown-300);
}
.is-inverted .label__n {
  border-right-color: var(--line-inv);
  /* brown-400 sobre o marrom-950 dava 4,0:1 e reprovava no AA para texto
     de 11px. O brown-300 sobe para 6,4:1. */
  color: var(--brown-300);
}