/* O cabeçalho público próprio do RN, compartilhado pela landing, leitura e documentação. */
.rn-header {
  --rn-gutter: max(24px, calc((100vw - 1280px) / 2));
  background: var(--paper);
  color: var(--ink);
  border-bottom: 1px solid var(--line-strong);
}
.rn-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px 24px;
  padding: 14px var(--rn-gutter);
}
.rn-header .brand { min-width: 0; font-size: 18px; font-weight: 650; letter-spacing: -.035em; }
.rn-header .brand-mark { width: 34px; height: 34px; flex-shrink: 0; border: 0; border-radius: 9px; background: var(--green); color: var(--paper); }
.rn-header .brand-mark-icon { width: 28px; height: 28px; }
.rn-header-tools { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin-left: auto; min-width: 0; }
.rn-header-trial {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  padding: 10px 18px;
  border: 1px solid var(--green);
  border-radius: 8px;
  background: var(--green);
  color: var(--paper);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
}
.rn-header-trial svg, .rn-menu svg { width: 18px; height: 18px; flex-shrink: 0; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.rn-header .rn-menu {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  padding: 8px var(--rn-gutter);
  border-top: 1px solid var(--line);
  background: var(--surface);
}
.rn-header .rn-menu a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.4;
  text-decoration: none;
}
.rn-menu a[aria-current="page"] { color: var(--green); background: var(--paper-strong); border-color: var(--line-strong); }
.rn-menu a:hover { color: var(--ink); background: var(--paper-strong); }
.rn-menu a:active { color: var(--green); border-color: var(--green); }
.rn-header-trial:hover { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.rn-header-trial:active { background: var(--surface); color: var(--green); border-color: var(--green); }
.rn-header :is(a, button):focus-visible { outline: 2px solid var(--green); outline-offset: 3px; box-shadow: none; }

@media (max-width: 760px) {
  .rn-topbar { gap: 10px; }
  .rn-header .rn-menu { gap: 2px; }
  .rn-menu a { padding: 10px; }
}
@media (max-width: 480px) {
  .rn-header .brand { font-size: 14px; gap: 6px; }
  .rn-header .brand-mark { width: 28px; height: 28px; }
  .rn-header .brand-mark-icon { width: 24px; height: 24px; }
  .rn-header-tools { gap: 8px; }
  .rn-header-trial { padding: 10px 12px; font-size: 13px; }
  .rn-header-trial svg { display: none; }
  .rn-header .header-prefs .language-picker a { padding: 0 6px; }
  .rn-header .header-prefs .theme-toggle { width: 34px; min-width: 34px; }
}
@media (pointer: coarse) {
  .rn-header .header-prefs :is(a, button) { min-height: 44px; }
}
@media print { .rn-header { display: none; } }
.rn-header .rn-novidades { display: inline-flex; align-items: center; justify-content: center; min-width: 20px; height: 20px; padding: 0 5px; border-radius: 999px; background: var(--green); color: var(--paper); font-size: 12px; font-weight: 750; }
.rn-header .rn-novidades[hidden] { display: none; }