/* SAPIA.24 — identidade compartilhada das páginas públicas.
   Paleta extraída do logo v2026 (cérebro-circuito): azul-petróleo → verde-água → coral. */

:root {
  --brand-blue: #2e9ab8;
  --brand-blue-deep: #17607a;
  --brand-teal: #7fc6bd;
  --brand-teal-deep: #2e8b7f;
  --brand-coral: #e3765b;
  --brand-amber: #e69466;
  --brand-grad: linear-gradient(96deg, var(--brand-blue) 0%, var(--brand-teal) 45%, var(--brand-coral) 100%);

  --ink: #08090a;
  --ink-raise: #0d0f11;
  --line: #1b1e20;
  --text: #f2f4f4;
  --muted: #8b9694;
  --muted-dim: #5d6664;

  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, system-ui, sans-serif;
}

/* Fio da marca no topo de toda página. */
.brand-rule {
  height: 2px;
  background: var(--brand-grad);
}

/* ── Cabeçalho ───────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 1.1rem 3rem;
  background: rgba(8, 9, 10, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  line-height: 1;
}

.brand img {
  width: 30px;
  height: 30px;
  display: block;
}

.brand-word {
  font-family: var(--font);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--brand-teal); /* recuo se background-clip:text não pegar */
  background: var(--brand-grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Co-marca: "uma plataforma InfoBusiness". É o vínculo INFB → SAPIA.24 visível
   já no cabeçalho, do jeito que o Cristiano desenhou. */
.brand-by {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: 0.9rem;
  padding-left: 0.9rem;
  border-left: 1px solid var(--line);
  color: var(--muted-dim);
  font-size: 0.68rem;
  letter-spacing: 0.02em;
  line-height: 1.2;
}

.brand-by img {
  height: 18px;
  width: auto;
  display: block;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-family: var(--font);
  transition: color 0.2s;
}

.site-nav a:hover { color: var(--text); }
.site-nav a.is-active { color: var(--brand-teal); }

/* ── Rodapé ──────────────────────────────────────────────────── */
.site-footer {
  background: var(--ink);
  border-top: 1px solid var(--line);
  padding: 2.25rem 3rem;
  font-family: var(--font);
  font-size: 0.8rem;
}

.foot-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  flex-wrap: wrap;
}

.foot-legal {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  color: var(--muted-dim);
}

.foot-legal a { color: var(--muted); text-decoration: none; }
.foot-legal a:hover { color: var(--brand-teal); }

.foot-links {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.foot-links a {
  color: var(--muted-dim);
  text-decoration: none;
  transition: color 0.2s;
}

.foot-links a:hover { color: var(--brand-teal); }

/* ── Acessibilidade ──────────────────────────────────────────── */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--brand-teal);
  outline-offset: 3px;
  border-radius: 3px;
}

@media (max-width: 820px) {
  .brand-by { display: none; }
}

@media (max-width: 600px) {
  .site-header { padding: 0.9rem 1.25rem; }
  .site-footer { padding: 1.75rem 1.25rem; }
  .site-nav { gap: 1rem; }
  .foot-inner { flex-direction: column; gap: 1.5rem; }
}