/* ====================================================
   NAV COMPARTILHADO - Umanut
   Usado por todas as páginas
==================================================== */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 100%;
  transform-origin: 0 50%;
  transform: scaleX(0);
  background: linear-gradient(90deg, var(--azul-horizonte), var(--azul-sereno), var(--azul-manha));
  z-index: 9999;
}

/* ====================================================
   HEADER / NAV - esconde ao descer, volta ao subir
==================================================== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 1.5rem;
  transition: background 350ms, box-shadow 350ms, transform 450ms var(--ease-smooth);
}
.site-header.scrolled {
  background: rgba(10, 21, 48, 0.88);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  box-shadow: 0 1px 0 rgba(190,210,240,0.12), 0 8px 32px rgba(0,0,0,0.22);
}
.site-header.hidden { transform: translateY(-100%); }

.nav-inner {
  max-width: var(--max-w);
  margin-inline: auto;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3rem;
  height: 76px;
}
.nav-inner, .nav-inner * { line-height: normal; vertical-align: baseline; }
.nav-links { list-style: none !important; margin: 0 !important; padding: 0 !important; }
.nav-links li { margin: 0 !important; padding: 0 !important; }
.nav-links a { display: inline-flex; align-items: center; margin: 0; }
.nav-toggle, .nav-toggle * { box-sizing: border-box; }
.mobile-nav a { margin: 0; }

.nav-logo { display: flex; align-items: center; height: 100%; }
.nav-logo .logo-img {
  height: 40px;
  max-height: 52%;
  width: auto;
  display: block;
}

.nav-links { display: flex; align-items: center; gap: 2.25rem; }
.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  letter-spacing: 0.02em;
  transition: color 200ms;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px; left: 0;
  width: 100%; height: 1.5px;
  background: var(--azul-manha);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 350ms var(--ease-smooth);
}
.nav-links a:visited,
.nav-links a:link { color: rgba(255,255,255,0.85); }
.nav-links a:hover,
.nav-links a:active,
.nav-links a:focus { color: var(--branco); }
.nav-links a:hover::after { transform: scaleX(1); transform-origin: left; }
.nav-links a.active { color: var(--branco); }
.nav-links a.active::after { transform: scaleX(1); }

.nav-links .nav-cta {
  background: var(--azul-horizonte);
  color: var(--branco);
  padding: 0.55rem 1.35rem;
  border-radius: 50px;
  font-weight: 600;
  transition: background 250ms, box-shadow 250ms, transform 250ms;
}
.nav-links .nav-cta:visited { color: var(--branco); }
.nav-links .nav-cta:hover,
.nav-links .nav-cta:active,
.nav-links .nav-cta:focus {
  background: var(--azul-umanut);
  color: var(--branco);
  box-shadow: 0 6px 18px rgba(40,120,170,0.45);
  transform: translateY(-1px);
}
.nav-links .nav-cta::after { display: none; }

/* navbar sobre hero claro (páginas que não tem hero escuro no topo) */
.site-header.on-light:not(.scrolled) .nav-links a { color: rgba(10,21,48,0.78); }
.site-header.on-light:not(.scrolled) .nav-links a:hover,
.site-header.on-light:not(.scrolled) .nav-links a.active { color: var(--tinta-profunda); }
.site-header.on-light:not(.scrolled) .nav-links a::after { background: var(--azul-umanut); }
.site-header.on-light:not(.scrolled) .nav-links .nav-cta { color: var(--branco); }
.site-header.on-light:not(.scrolled) .nav-toggle span { background: var(--tinta-profunda); }
.site-header.on-light .nav-toggle.open span { background: var(--branco); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 6px;
  background: none;
  border: none;
  z-index: 102;
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
}
.nav-toggle span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--branco);
  transition: transform 350ms var(--ease-smooth), opacity 250ms, width 250ms;
}
.nav-toggle span:nth-child(1) { width: 26px; }
.nav-toggle span:nth-child(2) { width: 18px; }
.nav-toggle span:nth-child(3) { width: 22px; }
.nav-toggle.open span:nth-child(1) { width: 26px; transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { width: 26px; transform: translateY(-7px) rotate(-45deg); }

.mobile-nav {
  position: fixed;
  inset: 0;
  background: var(--tinta-profunda);
  z-index: 99;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.25rem;
  clip-path: inset(0 0 100% 0);
  transition: clip-path 650ms var(--ease-out-expo);
  visibility: hidden;
}
.mobile-nav.open { clip-path: inset(0 0 0 0); visibility: visible; }
.mobile-nav a,
.mobile-nav a:link,
.mobile-nav a:visited {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 500;
  color: var(--branco);
  opacity: 0.85;
  transition: opacity 200ms, color 200ms;
}
.mobile-nav a:hover,
.mobile-nav a:focus { opacity: 1; color: var(--azul-manha); }

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
}