/* base.css — reset + primitives shared by every page. Zone/home CSS supplies the color & font tokens.
   Copiado do E2.1; únicas mudanças são as regras obrigatórias do E3 (E33 da Fable, registros 12 e 14
   do GATE1.1_E2.md) — marcadas abaixo. */

:root {
  --bg: #ffffff;
  --surface: #f2f2f2;
  --text: #1a1a1a;
  --text-dim: #55524d;
  --accent: #333333;
  --accent-2: #666666;
  --font-head: system-ui, sans-serif;
  --font-body: system-ui, sans-serif;
  --font-mono: ui-monospace, monospace;
  --radius: 14px;
  --speed: 200ms;
  --ease: ease;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.55;
  /* E19 (gate 1 do E2, item 5): sem overflow-x:hidden aqui — mascarava regressão de layout.
     O E2.1 já tinha medido que nada de verdade ultrapassa a direita nas 12 combinações; a
     prova do E3 remede scrollWidth==innerWidth nas 6 páginas sem essa rede de segurança. */
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { font-family: var(--font-head); margin: 0 0 .5em; line-height: 1.15; }
p { margin: 0 0 1em; }
ul { margin: 0; padding: 0; list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input { font: inherit; }

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

.skip-link {
  position: absolute; left: 8px; top: -60px;
  background: var(--accent); color: var(--bg);
  padding: .6em 1em; border-radius: 8px; z-index: 200;
  transition: top var(--speed) var(--ease);
}
.skip-link:focus { top: 8px; }

:focus-visible {
  outline: 3px solid var(--accent-2);
  outline-offset: 3px;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin-inline: auto;
  padding-inline: 24px;
}

/* ---------- site nav ---------- */
.site-nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(10px);
  transition: background var(--speed) var(--ease), color var(--speed) var(--ease);
}
.site-nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  font-weight: 700;
  letter-spacing: .04em;
  font-size: 1.05rem;
}
.site-nav__logo svg { width: 26px; height: 26px; }
.site-nav__links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: .95rem;
}
.site-nav__links a {
  position: relative;
  padding: 4px 0;
}
.site-nav__links a::after {
  content: "";
  position: absolute; left: 0; right: 100%; bottom: -2px;
  height: 2px; background: currentColor;
  transition: right var(--speed) var(--ease);
}
.site-nav__links a:hover::after,
.site-nav__links a:focus-visible::after,
.site-nav__links a[aria-current="page"]::after { right: 0; }
.site-nav__newsletter-icon svg { width: 20px; height: 20px; }
.site-nav__toggle { display: none; }

@media (max-width: 760px) {
  .site-nav__links {
    position: fixed; inset: 64px 0 auto 0;
    flex-direction: column; align-items: flex-start;
    gap: 0; padding: 8px 28px 20px;
    background: var(--bg);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    /* E33/registro 14: fechado fica visibility:hidden (não só opacity+pointer-events), com
       transição atrasada para não cortar a animação de fechamento; a interatividade real
       (foco/clique) é bloqueada pelo atributo `inert` que main.js aplica/remove no mesmo
       estado (matchMedia, só abaixo de 760px — ver assets/main.js). */
    visibility: hidden;
    transition: opacity var(--speed) var(--ease), transform var(--speed) var(--ease),
      visibility 0s linear var(--speed);
  }
  .site-nav__links a, .site-nav__links button { padding: 12px 0; width: 100%; }
  .site-nav.is-open .site-nav__links {
    opacity: 1; transform: translateY(0); pointer-events: auto;
    visibility: visible;
    transition-delay: 0s;
  }
  .site-nav__toggle {
    display: block;
    width: 26px; height: 20px;
    position: relative;
  }
  .site-nav__toggle span,
  .site-nav__toggle::before,
  .site-nav__toggle::after {
    content: ""; position: absolute; left: 0; right: 0; height: 2px;
    background: currentColor; transition: transform var(--speed) var(--ease), opacity var(--speed) var(--ease);
  }
  .site-nav__toggle::before { top: 0; }
  .site-nav__toggle span { top: 9px; }
  .site-nav__toggle::after { top: 18px; }
  .site-nav.is-open .site-nav__toggle::before { transform: translateY(9px) rotate(45deg); }
  .site-nav.is-open .site-nav__toggle span { opacity: 0; }
  .site-nav.is-open .site-nav__toggle::after { transform: translateY(-9px) rotate(-45deg); }
}

/* ---------- buttons & chips ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: .8em 1.6em;
  border-radius: 999px;
  font-weight: 600;
  background: var(--accent);
  color: var(--bg);
  transition: transform var(--speed) var(--ease), opacity var(--speed) var(--ease);
}
.btn:hover, .btn:focus-visible { transform: translateY(-2px); opacity: .92; }
.btn--outline {
  background: transparent;
  color: currentColor;
  box-shadow: inset 0 0 0 1.5px currentColor;
}

.chip {
  display: inline-block;
  padding: .35em 1em;
  border-radius: 999px;
  font-size: .8rem;
  letter-spacing: .03em;
  box-shadow: inset 0 0 0 1px currentColor;
  opacity: .85;
}

/* ---------- newsletter band ---------- */
.newsletter {
  padding: 90px 0;
  text-align: center;
}
.newsletter h2 { font-size: clamp(1.6rem, 4vw, 2.4rem); }
.newsletter__doors {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 18px;
  margin: 32px 0;
}
.newsletter__door {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  border-radius: 999px;
  box-shadow: inset 0 0 0 1.5px currentColor;
  cursor: pointer;
}
.newsletter__door input { accent-color: currentColor; width: 16px; height: 16px; }
.newsletter__form {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  max-width: 520px;
  margin: 0 auto;
}
@media (min-width: 900px) {
  .newsletter__form { max-width: 640px; }
  .newsletter__doors { flex-wrap: nowrap; }
}
.newsletter__form input[type="email"] {
  flex: 1 1 260px;
  padding: .9em 1.2em;
  border-radius: 999px;
  border: 1.5px solid currentColor;
  background: transparent;
  color: inherit;
}
.newsletter__form input[type="email"]::placeholder { color: currentColor; opacity: .6; }
.newsletter__privacy {
  margin-top: 18px;
  font-size: .85rem;
  opacity: .75;
}
.newsletter__note {
  margin-top: 10px;
  font-size: .85rem;
  opacity: 0;
  height: 0;
  transition: opacity var(--speed) var(--ease);
}
.newsletter__note.is-visible { opacity: .9; height: auto; }

/* ---------- footer ---------- */
.site-footer {
  padding: 60px 0 40px;
  text-align: center;
  font-size: .9rem;
}
.site-footer__links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
/* E33/registro 12: token de cor sólido por zona em vez de opacity: .6 (o par de contraste
   4,12:1 da Lighter vinha da opacity multiplicando em cima de --text-dim, não do token em
   si). --text-dim existe nas 4 zonas e ganhou um valor equivalente para a casca neutra da
   home em home.css (a home não é uma zona, não tinha o token). */
.site-footer__meta { color: var(--text-dim); }

/* ---------- article shared bits ---------- */
.email-box {
  margin: 48px 0;
  padding: 32px;
  border-radius: var(--radius);
  text-align: center;
  box-shadow: inset 0 0 0 1px currentColor;
}
.email-box h3 { margin-bottom: 10px; }

.placeholder-flag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .05em;
  text-transform: uppercase;
  padding: .3em .7em;
  border-radius: 6px;
  background: color-mix(in srgb, currentColor 14%, transparent);
  opacity: .92;
}

/* ---------- zone landing page (shared shell; colors come from the zone file) ---------- */
.zone-hero {
  padding: 150px 24px 90px;
}
.zone-hero__inner {
  display: grid;
  grid-template-columns: .7fr 1.3fr;
  gap: 56px;
  align-items: center;
}
.zone-hero__portrait svg { width: 100%; max-width: 320px; }
.zone-hero h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
.zone-hero__lede { max-width: 60ch; font-size: 1.1rem; color: var(--text-dim); }
.eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 10px;
}

.zone-subtags { padding: 0 24px 60px; }
.zone-subtags .chips { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 14px; }

.zone-articles { padding: 40px 24px 100px; }
.zone-articles h2 { margin-bottom: 30px; }
.article-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.article-card {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}
.article-card > a { display: block; }
.article-card__cover svg { width: 100%; height: 160px; }
.article-card h3 { font-size: 1.05rem; padding: 18px 18px 6px; }
.article-card .byline { padding: 0 18px 18px; font-size: .85rem; display: flex; gap: 8px; align-items: center; }
.article-card--stub {
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: center;
  align-items: flex-start;
  padding: 18px;
  min-height: 220px;
  opacity: .8;
}
.stub-line {
  width: 100%;
  height: 10px;
  border-radius: 6px;
  background: color-mix(in srgb, currentColor 20%, transparent);
  margin: 0;
}
.stub-line::before { content: ""; }

@media (max-width: 900px) {
  .zone-hero__inner { grid-template-columns: 1fr; text-align: center; }
  .zone-hero__portrait svg { max-width: 220px; margin: 0 auto; }
  .zone-subtags .chips { justify-content: center; }
  .article-list { grid-template-columns: 1fr; }
}