.site-header { position: sticky; z-index: 1000; top: 0; border-bottom: 1px solid var(--color-border); background: rgba(255, 255, 255, .97); backdrop-filter: blur(12px); }
.navbar { display: flex; min-height: 108px; align-items: center; justify-content: space-between; gap: 1.5rem; }
.navbar-brand, .footer-brand { display: inline-flex; align-items: center; }
.navbar-brand { flex: 0 0 auto; }
.logo-img { display: block; width: auto; height: 90px; object-fit: contain; }
.navbar-brand .logo-img { filter: drop-shadow(0 2px 6px rgba(15, 23, 42, .12)); }
.nav-list { display: flex; align-items: center; gap: clamp(.8rem, 2vw, 1.5rem); margin: 0; padding: 0; list-style: none; }
.nav-list li { margin: 0; }
.nav-list a { color: var(--color-dark); font-size: 1rem; font-weight: 700; text-decoration: none; }
.nav-list a:not(.button):hover, .nav-list a[aria-current="page"]:not(.button) { color: var(--color-dark); text-decoration: underline; text-decoration-color: var(--color-primary); text-underline-offset: .3em; }
.nav-list .button { color: #fff !important; }
.nav-toggle { display: none; width: 46px; height: 44px; align-items: center; justify-content: center; border: 1px solid var(--color-border); border-radius: 8px; background: var(--color-bg-main); cursor: pointer; }
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after { display: block; width: 21px; height: 2px; background: var(--color-dark); content: ""; }
.nav-toggle span { position: relative; }
.nav-toggle span::before, .nav-toggle span::after { position: absolute; left: 0; }
.nav-toggle span::before { top: -7px; }
.nav-toggle span::after { top: 7px; }
.site-footer { padding: 2.75rem 0 1rem; background: var(--color-dark); color: var(--color-bg-warm); }
.site-footer p, .site-footer li { color: var(--color-border) !important; }
.site-footer h2 { margin-bottom: .8rem; color: var(--color-bg-main) !important; font-size: 1.2rem !important; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 2.5rem; }
.footer-brand { min-height: 0; width: fit-content; max-width: 100%; justify-content: flex-start; }
.footer-brand .logo-img { width: min(160px, 100%); height: auto; max-height: 118px; object-fit: contain; }
.footer-summary { max-width: 370px; margin-top: .75rem; }
.footer-links { margin: 0; padding: 0; list-style: none; }
.footer-links li { margin: .45rem 0; }
.footer-links a { color: var(--color-bg-warm); text-decoration: none; }
.footer-links a:hover { color: var(--color-bg-main); text-decoration: underline; text-decoration-color: var(--color-primary); }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .8rem; margin-top: 1.75rem; padding-top: .8rem; border-top: 1px solid var(--color-border); }
.footer-bottom span { color: var(--color-border); font-size: .88rem; }
.whatsapp-float {
  position: fixed;
  z-index: 9999;
  right: 24px;
  bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border-radius: 50px;
  background-color: #25D366;
  box-shadow: 0 4px 16px rgba(37, 211, 102, .4);
  color: #FFFFFF;
  font-weight: 700;
  text-decoration: none;
  transition: transform .3s ease, box-shadow .3s ease;
}
.whatsapp-float:hover { transform: scale(1.05); box-shadow: 0 6px 20px rgba(37, 211, 102, .6); color: #FFFFFF; }
.whatsapp-float:focus-visible { outline-color: var(--color-dark); }
.whatsapp-float svg { width: 25px; height: 25px; fill: currentColor; }
@media (max-width: 850px) {
  .navbar { min-height: 88px; }
  .nav-toggle { display: flex; }
  .nav-list { position: absolute; top: 100%; right: 0; left: 0; display: none; align-items: stretch; flex-direction: column; gap: 0; padding: .5rem 1.25rem 1.25rem; border-bottom: 1px solid var(--color-border); background: var(--color-bg-main); box-shadow: 0 12px 20px rgba(15, 23, 42, .08); }
  .nav-list.is-open { display: flex; }
  .nav-list li { padding: .55rem 0; }
  .nav-list .button { display: block; }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid > div:first-child { grid-column: 1 / -1; }
}
@media (max-width: 520px) {
  .logo-img { height: 72px; }
  .navbar { gap: .75rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .footer-grid > div:first-child { grid-column: auto; }
  .whatsapp-float { right: 12px; bottom: 12px; min-height: 46px; padding: 0 12px; font-size: .9rem; }
}