.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(10, 31, 45, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: background var(--transition-base);
}

.header-container {
  max-width: var(--max-width);
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--section-padding-x);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.header-logo img {
  height: 32px;
  width: auto;
  display: block;
}

.header-nav {
  display: flex;
  gap: 36px;
  align-items: center;
}

.header-nav a {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-light);
  position: relative;
  padding: 8px 0;
}

.header-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-gold);
  transition: width var(--transition-base);
}

.header-nav a:hover,
.header-nav a.is-active {
  color: var(--color-gold);
}

.header-nav a:hover::after,
.header-nav a.is-active::after {
  width: 100%;
}

.header-cta {
  background: var(--color-gold);
  color: var(--color-dark);
  padding: 14px 24px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 4px;
  transition: all var(--transition-base);
}

.header-cta:hover {
  background: var(--color-gold-hover);
  transform: translateY(-1px);
}

.menu-toggle {
  display: none;
  width: 32px;
  height: 32px;
  position: relative;
  z-index: 1100;
}

.menu-toggle span {
  display: block;
  position: absolute;
  left: 4px;
  width: 24px;
  height: 1.5px;
  background: var(--color-light);
  transition: all var(--transition-base);
}

.menu-toggle span:nth-child(1) { top: 11px; }
.menu-toggle span:nth-child(2) { top: 18px; }

.menu-toggle.is-open span:nth-child(1) {
  top: 15px;
  transform: rotate(45deg);
  background: var(--color-gold);
}

.menu-toggle.is-open span:nth-child(2) {
  top: 15px;
  transform: rotate(-45deg);
  background: var(--color-gold);
}

.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-dark);
  z-index: 1050;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 32px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.mobile-nav.is-open {
  opacity: 1;
  pointer-events: all;
}

.mobile-nav a {
  font-family: var(--font-display);
  font-size: 32px;
  color: var(--color-light);
  transition: color var(--transition-fast);
}

.mobile-nav a:hover,
.mobile-nav a.is-active {
  color: var(--color-gold);
}

.mobile-nav-cta {
  margin-top: 24px;
  background: var(--color-gold);
  color: var(--color-dark);
  padding: 16px 32px;
  font-family: var(--font-body) !important;
  font-size: 14px !important;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 4px;
}

.site-footer {
  background: var(--color-dark);
  color: var(--color-light);
  padding: 80px var(--section-padding-x) 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 64px;
  padding-bottom: 64px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand img {
  height: 36px;
  margin-bottom: 24px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--color-neutral);
  max-width: 280px;
  line-height: 1.6;
}

.footer-col h4 {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 20px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col a,
.footer-col p {
  font-size: 14px;
  color: var(--color-neutral);
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: var(--color-gold);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom p,
.footer-bottom a {
  font-size: 12px;
  color: var(--color-neutral);
  letter-spacing: 0.04em;
}

.footer-bottom .footer-socials {
  display: flex;
  gap: 24px;
}

.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #25d366;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  animation: pulse-whatsapp 2.4s ease-in-out infinite;
}

.whatsapp-float:hover {
  transform: scale(1.08);
  box-shadow: 0 12px 32px rgba(37, 211, 102, 0.4);
}

.whatsapp-float svg {
  width: 32px;
  height: 32px;
  fill: #fff;
}

@keyframes pulse-whatsapp {
  0%, 100% { box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25), 0 0 0 0 rgba(37, 211, 102, 0.4); }
  50% { box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25), 0 0 0 16px rgba(37, 211, 102, 0); }
}

@media (max-width: 968px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .header-nav,
  .header-cta {
    display: none;
  }
  .menu-toggle {
    display: block;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .whatsapp-float {
    width: 54px;
    height: 54px;
    bottom: 20px;
    right: 20px;
  }
  .whatsapp-float svg {
    width: 28px;
    height: 28px;
  }
}