/* ═══════════════════════════════════════════════════════════════════
   base.css — estilos globais, tipografia de base, utilitarios de layout.
   ═══════════════════════════════════════════════════════════════════ */

body {
  background: var(--surface-canvas);
  color: var(--text-body);
  font-family: var(--font-body);
  font-weight: var(--weight-light);
  font-size: var(--text-body-md);
  line-height: var(--leading-body);
  letter-spacing: var(--tracking-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* ── Tipografia ───────────────────────────────────────────────────── */

h1, h2, h3, h4 {
  color: var(--text-heading);
  font-family: var(--font-display);
  font-weight: var(--weight-regular);
  letter-spacing: var(--tracking-display);
  line-height: var(--leading-title);
  text-wrap: balance;
}

/* Titulos longos (> 4 palavras) trocam Cinzel por Open Sans Light —
   Cinzel e all-caps e fica ilegivel em frase longa. */
.rn-title--long {
  font-family: var(--font-body);
  font-weight: var(--weight-light);
  font-size: var(--text-display-3);
  letter-spacing: 0;
  line-height: 1.24;
  text-transform: none;
}

p { text-wrap: pretty; }

strong { font-weight: var(--weight-semibold); }

blockquote {
  font-family: var(--font-body);
  font-weight: var(--weight-light);
  font-style: italic;
  color: var(--cedar-300);
}

/* ── Links ────────────────────────────────────────────────────────── */

a {
  color: var(--text-link);
  text-decoration: none;
  transition: var(--transition-control);
}

a:hover { color: var(--text-link-hover); }

/* Link de texto corrido: hairline que vira cedar no hover */
.rn-link {
  border-bottom: 1px solid var(--border-default);
  padding-bottom: 1px;
}

.rn-link:hover { border-bottom-color: var(--rule-accent); }

::selection {
  background: var(--cedar-500);
  color: var(--bone-100);
}

:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
  border-radius: var(--radius-control);
}

/* ── Eyebrow ──────────────────────────────────────────────────────── */

.rn-eyebrow {
  display: block;
  font-family: var(--font-eyebrow);
  font-size: var(--text-eyebrow);
  font-weight: var(--weight-regular);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--text-accent);
  margin: 0;
}

.rn-eyebrow--inverse { color: var(--cedar-700); }

/* ── Layout ───────────────────────────────────────────────────────── */

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

.rn-shell--narrow { max-width: var(--content-max-narrow); }

/* As secoes carregam a goteira como padding real (inset em todos os
   lados). A primeira declaracao e o valor base — atendida por qualquer
   engine, inclusive as que ignoram propriedades logicas; as duas
   seguintes a refinam para a escala fluida. */
.rn-section {
  position: relative;
  padding: var(--space-9) var(--space-5);
  padding-block: var(--section-y);
  padding-inline: var(--gutter-inline);
  scroll-margin-top: calc(var(--header-h) + 8px);
}

/* A goteira ja foi aplicada pela secao: o shell interno so centraliza. */
.rn-section > .rn-shell,
.rn-aviso > .rn-shell {
  padding-inline: 0;
  max-width: var(--shell-max);
}

.rn-section > .rn-shell--narrow,
.rn-aviso > .rn-shell--narrow { max-width: var(--shell-max-narrow); }

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

/* Camadas de hunter — translucidas para as nanoparticulas atravessarem */
.rn-section--sunken { background: var(--veil-sunken); }
.rn-section--deep   { background: var(--veil-deep); }
.rn-section--page   { background: var(--veil-page); }

/* Unico painel claro do site */
.rn-section--inverse {
  background: var(--surface-inverse);
  color: var(--text-on-inverse);
}

.rn-section--inverse h2,
.rn-section--inverse h3 { color: var(--text-on-inverse-strong); }

.rn-section + .rn-section { border-top: 1px solid var(--border-hairline); }

/* ── SectionHeading ───────────────────────────────────────────────── */

.rn-section-heading {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  max-width: var(--measure-prose);
}

.rn-section-heading--center {
  align-items: center;
  text-align: center;
  margin-inline: auto;
}

.rn-section-heading__title {
  font-family: var(--font-display);
  font-weight: var(--weight-regular);
  font-size: var(--text-display-2);
  line-height: var(--leading-title);
  letter-spacing: var(--tracking-display);
  margin: 0;
}

.rn-section-heading__rule {
  width: 48px;
  height: 1px;
  background: var(--rule-accent);
  border: 0;
}

.rn-section-heading__lead {
  font-family: var(--font-body);
  font-weight: var(--weight-light);
  font-size: var(--text-lead);
  line-height: var(--leading-body);
  color: var(--text-body);
  max-width: var(--measure-prose);
}

.rn-section-heading--center .rn-section-heading__lead { max-width: 58ch; }

.rn-section--inverse .rn-section-heading__lead { color: var(--ink-700); }
.rn-section--inverse .rn-section-heading__rule { background: var(--cedar-700); }

/* ── Divisor de secao com monograma (motivo do prototipo) ─────────── */

.rn-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-5);
  margin-bottom: var(--space-8);
}

.rn-divider::before,
.rn-divider::after {
  content: "";
  width: clamp(48px, 12vw, 130px);
  height: 1px;
  background: linear-gradient(to right, transparent, var(--border-default), transparent);
}

.rn-divider__mark {
  width: 30px;
  height: auto;
  flex: none;
  opacity: 0.9;
}

/* ── Acessibilidade ───────────────────────────────────────────────── */

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

.rn-skip-link {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  z-index: 200;
  transform: translateY(-200%);
  background: var(--bone-100);
  color: var(--hunter-900);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-control);
  font-family: var(--font-body);
  font-weight: var(--weight-semibold);
  font-size: var(--text-body-sm);
  line-height: 1.3;
  text-transform: uppercase;
  letter-spacing: var(--tracking-caps);
  transition: transform var(--duration-fast) var(--ease-standard);
}

/* O link de pulo e o unico <a> sobre fundo bone: o hover cedar global
   cairia para 2.7:1 aqui. Mantem a tinta hunter. */
.rn-skip-link:hover,
.rn-skip-link:focus-visible { color: var(--hunter-900); }

.rn-skip-link:focus-visible { transform: translateY(0); }

/* Sprite de simbolos SVG: fora do fluxo, sem ocupar espaco. Era um
   style="position:absolute" no HTML — virou classe para que o CSP
   possa dispensar 'unsafe-inline' em style-src. */
.rn-sprite {
  position: absolute;
}

/* ── Camadas de pintura ───────────────────────────────────────────── */

/* width/height explicitos sao obrigatorios: <canvas> e elemento
   substituido, e um substituido posicionado com width:auto resolve
   para o tamanho intrinseco (300x150) em vez de esticar entre os
   insets. Sem isto o campo inteiro fica num retangulo no canto. */
#rn-particles {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.rn-page {
  position: relative;
  z-index: 1;
}