/* ============================================================
   Patologias — Subnav Sticky
   Menu de âncoras que fica fixo abaixo do header ao rolar a página.
   Funciona em desktop, tablet e mobile (iOS Safari, Android Chrome/Firefox).
   ============================================================ */

.patologias-subnav {
  /* Sticky: o top é definido pelo JS que mede o header real ao vivo.
     O valor inicial aqui é um fallback conservador (~130px = topbar+header típicos).
     O JS substitui com --subnav-top calculado. */
  position: sticky;
  top: var(--subnav-top, 130px);
  z-index: calc(var(--z-sticky) - 10);

  /* Visual */
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 2px 12px rgba(15, 23, 42, 0.07);

  /* Largura total — sem padding-block de section */
  width: 100%;
  margin-inline: 0;
  padding-block: 0;
}

/* Wrapper interno: scroll horizontal no mobile, centrado no desktop */
.patologias-subnav-inner {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-3) var(--gutter);
  max-width: var(--container-max);
  margin-inline: auto;

  /* Scroll horizontal suave no mobile sem mostrar scrollbar */
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
  scrollbar-width: none;       /* Firefox */
  -ms-overflow-style: none;    /* IE/Edge */
  white-space: nowrap;
}

.patologias-subnav-inner::-webkit-scrollbar {
  display: none; /* Chrome/Safari/Opera */
}

/* Links individuais */
.subnav-link {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-border);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-gray-600);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  transition:
    background-color var(--dur-fast) var(--ease-out),
    border-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-out);
  /* Touch target mínimo WCAG 2.2 */
  min-height: 40px;
}

.subnav-link:hover {
  background: var(--color-primary-50);
  border-color: var(--color-primary-300);
  color: var(--color-primary-700);
  transform: translateY(-1px);
}

/* Estado ativo — seção em foco */
.subnav-link.is-active {
  background: var(--color-primary-600);
  border-color: var(--color-primary-600);
  color: var(--color-white);
  font-weight: var(--fw-semibold);
  box-shadow: var(--shadow-primary);
}

.subnav-link.is-active:hover {
  background: var(--color-primary-700);
  border-color: var(--color-primary-700);
  transform: translateY(-1px);
}

/* ---- RESPONSIVE ---- */

/* Tablet */
@media (max-width: 960px) {
  .patologias-subnav-inner {
    padding: var(--space-2) var(--gutter);
    gap: var(--space-1);
  }

  .subnav-link {
    padding: var(--space-2) var(--space-3);
    font-size: var(--fs-xs);
  }
}

/* Mobile: scroll horizontal, fade nas bordas */
@media (max-width: 767px) {
  .patologias-subnav {
    -webkit-mask-image:
      linear-gradient(to right, transparent 0%, black 5%, black 95%, transparent 100%);
    mask-image:
      linear-gradient(to right, transparent 0%, black 5%, black 95%, transparent 100%);
  }

  .patologias-subnav-inner {
    padding: var(--space-2) calc(var(--gutter) * 1.5);
    justify-content: flex-start;
    gap: var(--space-2);
  }
}