.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  padding: 1rem 0;
  transition:
    background var(--transition-base),
    border-color var(--transition-base),
    backdrop-filter var(--transition-base),
    transform var(--transition-base),
    padding var(--transition-base);
}

.site-header.is-scrolled {
  background: rgba(12, 12, 11, 0.75);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--line);
  padding: 0.8rem 0;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  min-width: 0;
}

.brand__logo {
  width: 52px;
  height: 52px;
  object-fit: contain;
  border-radius: 50%;
  background: #000;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.brand__text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand__mark {
  font-family: var(--font-body);
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--text);
}

.brand__sub {
  font-size: 0.74rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: lowercase;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.6rem;
}

.site-nav a {
  position: relative;
  color: var(--text-soft);
  font-size: 0.95rem;
  transition: color var(--transition-base), opacity var(--transition-base);
}

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

.site-nav a[data-page]::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.4rem;
  width: 100%;
  height: 1px;
  background: var(--sand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.site-nav a[data-page]:hover::after,
.site-nav a[data-page].is-active::after {
  transform: scaleX(1);
}

.site-nav__cta {
  margin-left: 0.5rem;
}

.menu-toggle {
  display: none;
  width: 52px;
  height: 52px;
  border: 1px solid var(--line);
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  background: rgba(255, 255, 255, 0.02);
}

.menu-toggle span {
  width: 18px;
  height: 1.5px;
  background: var(--text);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.menu-toggle.is-open span:first-child {
  transform: translateY(3.5px) rotate(45deg);
}

.menu-toggle.is-open span:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}

.site-footer {
  border-top: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0.01) 100%);
  padding: 4rem 0 1.5rem;
  margin-top: var(--section-space);
}

.site-footer__grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 0.9fr;
  margin-bottom: 2.5rem;
}

.site-footer__brand {
  max-width: 420px;
}

.brand--footer {
  margin-bottom: 1rem;
}

.site-footer__title {
  margin-bottom: 1rem;
  font-family: var(--font-body);
  font-size: 0.92rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.site-footer__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-footer__list li + li {
  margin-top: 0.75rem;
}

.site-footer__list a,
.site-footer__list li {
  color: var(--text-soft);
  transition: color var(--transition-base);
}

.site-footer__list a:hover {
  color: var(--text);
}

.site-footer__bottom {
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.8rem 1.5rem;
}

.site-footer__bottom p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.site-loader {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: grid;
  place-items: center;
  gap: 1rem;
  background: #090909;
  transition:
    opacity 700ms ease,
    visibility 700ms ease;
}

.site-loader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.site-loader__mark {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -0.06em;
  color: var(--text);
}

.site-loader__line {
  width: min(180px, 42vw);
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--sand) 50%,
    transparent 100%
  );
  animation: loaderPulse 1.6s ease-in-out infinite;
}

@keyframes loaderPulse {
  0%,
  100% {
    opacity: 0.35;
    transform: scaleX(0.7);
  }
  50% {
    opacity: 1;
    transform: scaleX(1);
  }
}

.whatsapp-float {
  position: fixed;
  right: 1.1rem;
  bottom: 1.1rem;
  z-index: 950;
  width: 62px;
  height: 62px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(16, 16, 16, 0.88);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: var(--shadow-strong);
  transition:
    transform var(--transition-fast),
    background var(--transition-base),
    border-color var(--transition-base);
}

.whatsapp-float:hover {
  transform: translateY(-4px);
  background: rgba(27, 27, 27, 0.94);
  border-color: rgba(216, 199, 174, 0.34);
}

.whatsapp-float svg {
  width: 28px;
  height: 28px;
  fill: currentColor;
}

.form-card {
  padding: clamp(1.3rem, 2vw, 2rem);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.035) 0%, rgba(255,255,255,0.015) 100%);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.form-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.form-grid .full {
  grid-column: 1 / -1;
}

.form-field label {
  display: inline-block;
  margin-bottom: 0.55rem;
  color: var(--text-soft);
  font-size: 0.95rem;
}

.form-note {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-top: 0.75rem;
}

.status-message {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  color: var(--text-soft);
}

.status-message.is-success {
  border-color: rgba(143, 185, 155, 0.32);
  background: rgba(143, 185, 155, 0.08);
}

.status-message.is-error {
  border-color: rgba(210, 141, 132, 0.32);
  background: rgba(210, 141, 132, 0.08);
}

@media (max-width: 1080px) {
  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 920px) {
  .menu-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: fixed;
    inset: 84px 1rem auto 1rem;
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
    padding: 1rem;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: rgba(14, 14, 13, 0.96);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow-strong);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition:
      opacity var(--transition-base),
      transform var(--transition-base);
  }

  .site-nav.is-open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .site-nav a {
    padding: 0.8rem 0.3rem;
  }

  .site-nav__cta {
    margin-left: 0;
    margin-top: 0.3rem;
  }
}

@media (max-width: 640px) {
  .brand__sub {
    white-space: normal;
    max-width: 150px;
    line-height: 1.2;
  }

  .site-footer__grid,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .site-footer {
    padding-top: 3rem;
  }

  .footer-credit {
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  transition: all 0.3s ease;
}

.footer-credit:hover {
  color: #C6A75E;
}

  .whatsapp-float {
    width: 58px;
    height: 58px;
    right: 0.9rem;
    bottom: 0.9rem;
  }
}