/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition-base);
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
}

.site-header.is-scrolled { box-shadow: 0 8px 24px rgba(11, 61, 43, 0.08); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  padding: var(--space-sm) 0;
}

.logo-link { display: flex; align-items: center; gap: var(--space-xs); }
.logo-link svg { height: 32px; width: auto; }

.main-nav { display: flex; align-items: center; gap: var(--space-lg); }

.nav-list { display: flex; gap: var(--space-lg); }

.nav-list a {
  color: var(--color-text);
  font-weight: 500;
  font-size: var(--fs-small);
  position: relative;
  padding: var(--space-2xs) 0;
  white-space: nowrap;
}

.nav-list a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -4px;
  width: 0; height: 2px;
  background: var(--color-primary);
  transition: width var(--transition-base);
}

.nav-list a:hover::after,
.nav-list a[aria-current="page"]::after { width: 100%; }
.nav-list a[aria-current="page"] { color: var(--color-primary); }

.header-actions { display: flex; align-items: center; gap: var(--space-sm); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  width: 40px; height: 40px;
  position: relative;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: "";
  position: absolute;
  left: 8px; right: 8px;
  height: 2px;
  background: var(--gray-800);
  transition: transform var(--transition-base), opacity var(--transition-base);
}
.nav-toggle span { top: 19px; }
.nav-toggle span::before { top: -8px; }
.nav-toggle span::after { top: 8px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { transform: translateY(-8px) rotate(-45deg); }

/* Footer */
.site-footer {
  background: var(--green-900);
  color: var(--green-100);
  padding: var(--space-2xl) 0 var(--space-lg);
  margin-top: var(--space-2xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: var(--space-lg);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid rgba(255,255,255,0.12);
}

.footer-brand p { color: rgba(231, 250, 240, 0.7); max-width: 32ch; }

.footer-col h4 {
  color: var(--white);
  font-size: var(--fs-small);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-md);
}

.footer-col ul { display: flex; flex-direction: column; gap: var(--space-sm); }
.footer-col a { color: rgba(231, 250, 240, 0.75); font-size: var(--fs-small); }
.footer-col a:hover { color: var(--lime-400); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding-top: var(--space-lg);
  font-size: var(--fs-small);
  color: rgba(231, 250, 240, 0.6);
}

.social-links { display: flex; gap: var(--space-sm); }
.social-links a {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
}
.social-links a:hover { background: var(--color-primary); }

/* Grids genéricos */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-xl); align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-lg); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-lg); }

@media (max-width: 1320px) {
  .main-nav { position: fixed; inset: 64px 0 0 0; background: var(--white); flex-direction: column; align-items: stretch; padding: var(--space-lg); transform: translateX(100%); transition: transform var(--transition-base); overflow-y: auto; }
  .main-nav.is-open { transform: translateX(0); }
  .nav-list { flex-direction: column; gap: var(--space-md); }
  .nav-list a { white-space: normal; }
  .nav-toggle { display: block; }
  .header-actions { flex-direction: column; align-items: stretch; margin-top: var(--space-lg); }
}

@media (max-width: 960px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}