/* ── 1.1 Nav — Isla flotante Liquid Glass ── */

.site-header {
  position: fixed;
  bottom: calc(var(--space-md) + env(safe-area-inset-bottom, 0px));
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-nav);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 700px;
  padding: var(--space-xs) var(--space-sm) var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  color: var(--color-dark);

  /* Liquid Glass */
  background: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(20px) saturate(1.8);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

/* Fallback para navegadores sin backdrop-filter */
@supports not (backdrop-filter: blur(1px)) {
  .site-nav {
    background: rgba(248, 248, 248, 0.9);
  }
}

/* Logo */
.site-nav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  color: var(--color-dark);
}

.site-nav__logo svg {
  height: 20px;
  width: auto;
}

/* Links container (desktop) */
.site-nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* Link individual */
.site-nav__link {
  font-size: var(--text-small);
  font-weight: var(--fw-regular);
  letter-spacing: var(--ls-wide);
  color: var(--color-dark);
  white-space: nowrap;
  transition: opacity var(--duration-fast);
}

.site-nav__link:hover {
  opacity: 0.6;
}

/* CTA button (pill accent) */
.site-nav__cta {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-full);
  color: var(--color-dark);
  font-size: var(--text-small);
  font-weight: var(--fw-medium);
  white-space: nowrap;
  transition: opacity var(--duration-fast);
  background: var(--color-accent) padding-box;
  border: 1px solid transparent;
}

.site-nav__cta:hover {
  opacity: 0.85;
}

/* CTA mobile (one-page: reemplaza hamburger) */
.site-nav__cta--mobile {
  display: none;
}

/* Hamburger toggle — COMENTADO para versión one-page */
.site-nav__toggle {
  display: none;
  cursor: pointer;
  line-height: 0;
  color: var(--color-dark);
  background: var(--color-accent) padding-box;
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  padding: var(--space-sm);
}

.site-nav__icon--close {
  display: none;
}

.site-nav__toggle[aria-expanded="true"] .site-nav__icon--menu {
  display: none;
}

.site-nav__toggle[aria-expanded="true"] .site-nav__icon--close {
  display: block;
}

/* Mobile panel — Full-screen overlay */
.site-nav__panel {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  display: flex;
  flex-direction: column;
  background-color: var(--color-white);
  color: var(--color-dark);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;

  /* Hidden state */
  visibility: hidden;
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-standard), visibility var(--duration-normal) var(--ease-standard);
}

.site-nav__panel.is-open {
  visibility: visible;
  opacity: 1;
}

/* Panel topbar — matches header position on mobile:
   header top (16px) + nav padding-top (8px) = 24px
   header left (16px) + nav padding-left (32px) = 48px
   header right (16px) + nav padding-right (16px) = 32px */
.site-nav__panel-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: calc(var(--space-sm) + var(--space-xs)) calc(var(--space-sm) + var(--space-sm)) 0 calc(var(--space-sm) + var(--space-md));
  flex-shrink: 0;
}

.site-nav__panel-logo {
  display: flex;
  align-items: center;
  color: var(--color-dark);
}

.site-nav__panel-logo svg {
  height: 20px;
  width: auto;
}

/* Close button (pill accent, same style as hamburger) */
.site-nav__panel-close {
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  line-height: 0;
  color: var(--color-dark);
  background: var(--color-accent) padding-box;
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  padding: var(--space-sm);
}

/* Panel content area */
.site-nav__panel-content {
  flex: 1;
  padding: 88px 52px 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

/* Section group */
.site-nav__panel-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* Section heading */
.site-nav__panel-heading {
  font-size: var(--text-lg);
  font-weight: var(--fw-regular);
  color: var(--color-gray-400);
  line-height: var(--lh-normal);
  letter-spacing: var(--ls-tight);
}

/* Link */
.site-nav__panel-link {
  display: flex;
  align-items: center;
  font-size: var(--text-lg);
  font-weight: var(--fw-medium);
  color: var(--color-dark);
  line-height: var(--lh-normal);
  letter-spacing: var(--ls-tight);
  transition: opacity var(--duration-fast);
}

.site-nav__panel-link:hover {
  opacity: 0.6;
}

/* Accent dot (green circle) */
.site-nav__panel-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent);
  margin-left: var(--space-xs);
  flex-shrink: 0;
}

/* Panel bottom bar */
.site-nav__panel-bottom {
  padding: var(--space-xl) 52px 40px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
  font-size: var(--text-lg);
  font-weight: var(--fw-regular);
  color: var(--color-gray-400);
  line-height: var(--lh-normal);
  letter-spacing: var(--ls-tight);
}

/* Desktop: hide mobile panel */
@media (min-width: 769px) {
  .site-nav__panel {
    display: none !important;
  }
}

/* ── Breakpoint: Mobile (≤768px) ── */
@media (max-width: 768px) {
  .site-header {
    left: var(--space-sm);
    right: var(--space-sm);
    transform: none;
  }

  .site-nav {
    justify-content: space-between;
    width: auto;
  }

  .site-nav__links {
    display: none;
  }

  /* .site-nav__toggle { display: block; } — COMENTADO para versión one-page */

  .site-nav__cta--mobile {
    display: inline-flex;
  }
}