/**
 * Protótipo — conteúdos por faixa etária / classificação
 * (só usado em prototipo-faixas.html, não afecta o resto do site)
 */

/* A faixa de aviso fica abaixo do header fixo (sem isto, o cabeçalho tapava o conteúdo) */
body.ibg .ibg-proto-strip {
  position: relative;
  z-index: 1;
  margin-top: 4.35rem;
  text-align: center;
  font-size: 0.8rem;
  line-height: 1.4;
  color: var(--ibg-ink-soft);
  background: linear-gradient(90deg, rgba(45, 106, 79, 0.12), rgba(201, 162, 39, 0.1), rgba(45, 106, 79, 0.12));
  border-bottom: 1px solid rgba(45, 106, 79, 0.15);
  padding: 0.55rem 0.75rem;
}
.ibg-proto-strip a {
  color: var(--ibg-green);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(45, 106, 79, 0.35);
}
.ibg-proto-strip a:hover,
.ibg-proto-strip a:focus-visible {
  border-bottom-color: var(--ibg-green);
  outline: none;
}
html[data-theme="dark"] .ibg-proto-strip {
  background: linear-gradient(90deg, rgba(82, 183, 136, 0.12), rgba(201, 162, 39, 0.08), rgba(82, 183, 136, 0.12));
  border-bottom-color: rgba(255, 255, 255, 0.08);
}
html[data-theme="dark"] .ibg-proto-strip a {
  color: var(--ibg-sage);
  border-bottom-color: rgba(116, 212, 168, 0.45);
}

/* Intro da página (bloco fora da navegação por faixas) */
.ibg-proto-hero {
  text-align: center;
  max-width: 40rem;
  margin: 0 auto 1.5rem;
}
.ibg-proto-hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.5rem, 3.5vw, 2rem);
  font-weight: 600;
  color: var(--ibg-ink);
  line-height: 1.2;
}
.ibg-proto-hero p {
  margin: 0;
  color: var(--ibg-ink-soft);
  line-height: 1.6;
  font-size: 0.98rem;
}

/* Navegação fixa: saltar para cada secção (faixa etária) */
.ibg-band-nav {
  position: sticky;
  top: 4.25rem;
  z-index: 4;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.45rem 0.5rem;
  margin: 0 0 2rem;
  padding: 0.65rem 0.75rem;
  border-radius: var(--ibg-radius, 14px);
  background: var(--ibg-paper);
  background: color-mix(in srgb, var(--ibg-paper) 86%, transparent);
  box-shadow: 0 4px 24px rgba(31, 30, 28, 0.06);
  border: 1px solid rgba(45, 106, 79, 0.12);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
html[data-theme="dark"] .ibg-band-nav {
  background: var(--ibg-paper);
  background: color-mix(in srgb, var(--ibg-paper) 80%, #000 20%);
  border-color: rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 28px rgba(0, 0, 0, 0.35);
}
@media (min-width: 900px) {
  .ibg-band-nav {
    top: 4.5rem;
    max-width: 58rem;
    margin-left: auto;
    margin-right: auto;
  }
}
.ibg-band-nav a {
  display: inline-block;
  padding: 0.4rem 0.7rem;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-decoration: none;
  color: var(--ibg-ink-soft);
  border-radius: 999px;
  border: 1px solid transparent;
  transition: color 0.2s, background 0.2s, border-color 0.2s;
}
.ibg-band-nav a:hover,
.ibg-band-nav a:focus-visible {
  color: var(--ibg-ink);
  background: rgba(45, 106, 79, 0.08);
  border-color: rgba(45, 106, 79, 0.18);
  outline: none;
}
html[data-theme="dark"] .ibg-band-nav a:hover,
html[data-theme="dark"] .ibg-band-nav a:focus-visible {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.1);
}
.ibg-band-nav a:active {
  transform: scale(0.98);
}

/* Uma "faixa" = secção com cabeçalho próprio + grelha de cards */
.ibg-band {
  scroll-margin-top: 7.5rem;
  padding-top: 0.25rem;
  padding-bottom: clamp(1.5rem, 4vw, 2.5rem);
}
.ibg-band__header {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.4rem 1rem;
  margin-bottom: 1.35rem;
  padding: 0 0 0.85rem 1.1rem;
  border-left: 4px solid var(--ibg-sage, #52b788);
  border-radius: 0 6px 6px 0;
}
@media (min-width: 640px) {
  .ibg-band__header {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: flex-end;
    justify-content: space-between;
  }
}
.ibg-band__titles {
  min-width: 0;
  flex: 1;
}
.ibg-band__kicker {
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ibg-sage, #52b788);
  margin: 0 0 0.2rem;
}
.ibg-band__header h2 {
  margin: 0;
  font-size: clamp(1.2rem, 2.2vw, 1.5rem);
  font-weight: 600;
  color: var(--ibg-ink);
  line-height: 1.2;
}
.ibg-band__age {
  margin: 0.25rem 0 0;
  font-size: 0.9rem;
  color: var(--ibg-mist);
}
.ibg-band__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.2rem;
}
@media (min-width: 640px) {
  .ibg-band__tags {
    margin-top: 0;
  }
}
.ibg-band__tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ibg-ink-soft);
  background: rgba(45, 106, 79, 0.1);
  border-radius: 6px;
  border: 1px solid rgba(45, 106, 79, 0.18);
}
html[data-theme="dark"] .ibg-band__tag {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.1);
  color: var(--ibg-ink-soft);
}
.ibg-band__tag--gold {
  color: var(--ibg-ink);
  background: linear-gradient(135deg, rgba(201, 162, 39, 0.18), rgba(201, 162, 39, 0.06));
  border-color: rgba(201, 162, 39, 0.35);
}

/* Varia a cor do traço no lado esquerdo por bloco (identidade, não acessibilidade) */
.ibg-band--criancas .ibg-band__header {
  border-left-color: #7cb8a0;
}
.ibg-band--adoles .ibg-band__header {
  border-left-color: #5a9b8a;
}
.ibg-band--jovens .ibg-band__header {
  border-left-color: var(--ibg-green, #2d6a4f);
}
.ibg-band--fam .ibg-band__header {
  border-left-color: #3d7a6a;
}
.ibg-band--mais .ibg-band__header {
  border-left-color: var(--ibg-gold, #c9a227);
}

.ibg-band .ibg-blog-card {
  height: 100%;
}

/* Em mobile, cartões a ocupar a largura com respiro */
@media (max-width: 576px) {
  .ibg-band .ibg-mb-60 {
    margin-bottom: 1.25rem;
  }
}