/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: box-shadow 200ms ease, border-color 200ms ease, background-color 200ms ease;
}
.site-header.scrolled {
  background: var(--surface-container-lowest);
  box-shadow: var(--shadow-1);
  border-bottom-color: rgba(13, 27, 42, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  min-height: 72px;
}

.logo-link { display: inline-flex; align-items: center; flex: none; }
.logo-link img { width: 188px; height: auto; }
.logo-link:hover { text-decoration: none; }

/* Primary nav */
.primary-nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
}
.primary-nav a,
.primary-nav .nav-trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border-radius: var(--radius);
  color: var(--obsidian);
  font: 500 15px/24px var(--font-body);
  transition: background-color 150ms ease, color 150ms ease;
}
.primary-nav a:hover,
.primary-nav .nav-trigger:hover {
  background: rgba(46, 117, 187, 0.06);
  color: var(--primary-text-safe);
  text-decoration: none;
}
.primary-nav .nav-trigger[aria-expanded="true"] { color: var(--primary-text-safe); }
.primary-nav .nav-trigger .caret { transition: transform 200ms ease; }
.primary-nav .nav-trigger[aria-expanded="true"] .caret { transform: rotate(180deg); }

/* Dropdowns */
.nav-item { position: relative; }
.nav-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 280px;
  padding: 8px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(46, 117, 187, 0.2);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 200ms ease, transform 200ms ease, visibility 200ms;
}
.nav-dropdown.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown a {
  display: block;
  padding: 10px 14px;
  border-radius: var(--radius);
  color: var(--obsidian);
  font-size: 14px;
}
.nav-dropdown a:hover {
  background: var(--primary-tint-50);
  color: var(--primary-text-safe);
  text-decoration: none;
}

/* Desktop hover behavior (pointer + wide) */
@media (min-width: 1024px) and (hover: hover) {
  .nav-item:hover > .nav-dropdown,
  .nav-item:focus-within > .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

.header-cta { flex: none; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border-radius: var(--radius);
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--obsidian);
  border-radius: 2px;
  transition: transform 200ms ease, opacity 200ms ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile panel */
@media (max-width: 1023px) {
  .primary-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(360px, 88vw);
    background: var(--surface-container-lowest);
    box-shadow: var(--shadow-3);
    transform: translateX(100%);
    transition: transform 250ms ease;
    overflow-y: auto;
    z-index: 110;
    padding: 88px 20px 32px;
  }
  .primary-nav.open { transform: translateX(0); }

  .primary-nav ul { flex-direction: column; align-items: stretch; gap: 2px; }
  .primary-nav > ul > li > a,
  .primary-nav > ul > li > .nav-trigger {
    width: 100%;
    padding: 14px 16px;
    font-size: 16px;
    border-radius: var(--radius);
  }

  .nav-dropdown {
    position: static;
    min-width: 0;
    box-shadow: none;
    border: none;
    background: var(--primary-tint-50);
    opacity: 1;
    visibility: hidden;
    display: none;
    transform: none;
    margin-top: 4px;
  }
  .nav-dropdown.open { display: block; visibility: visible; }

  .nav-toggle { display: flex; z-index: 120; }
  .nav-toggle[aria-expanded="true"] span { background: var(--obsidian); }

  .header-cta { display: none; }
  .mobile-cta { display: block !important; margin: 16px 16px 0; }
}

.mobile-cta { display: none; }
.mobile-cta .btn { width: 100%; justify-content: center; }

/* Nav backdrop */
.nav-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(13, 27, 42, 0.4);
  opacity: 0;
  visibility: hidden;
  transition: opacity 250ms ease, visibility 250ms;
  z-index: 105;
}
.nav-backdrop.show { opacity: 1; visibility: visible; }
body.nav-locked { overflow: hidden; }

/* Footer */
.site-footer {
  background: var(--primary-midnight);
  color: var(--inverse-on-surface);
  margin-top: var(--space-xl);
}
.footer-main {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--gutter);
  padding-block: 56px 40px;
}
@media (max-width: 1023px) { .footer-main { grid-template-columns: 1fr 1fr; } }
@media (max-width: 767px) { .footer-main { grid-template-columns: 1fr; } }

.footer-brand img { width: 188px; margin-bottom: 16px; }
.footer-brand p { color: var(--primary-tint-200); font-size: 14px; line-height: 22px; }
.footer-brand address {
  font-style: normal;
  margin-top: 16px;
  color: var(--inverse-on-surface);
  font-size: 14px;
  line-height: 24px;
}
.footer-brand address a { color: var(--primary-tint-200); }
.footer-brand address a:hover { color: #fff; }

.footer-col h3 {
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col a {
  color: var(--primary-tint-200);
  font-size: 14px;
  transition: color 150ms ease;
}
.footer-col a:hover { color: #fff; text-decoration: none; }

.footer-connect .connect-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  color: var(--primary-tint-200);
  font-size: 14px;
}
.footer-connect .connect-row a { color: var(--primary-tint-200); }
.footer-connect .connect-row a:hover { color: #fff; text-decoration: none; }
.footer-connect svg { color: var(--primary-tint-200); flex: none; }

.footer-divider { position: relative; height: 1px; background: rgba(144, 188, 227, 0.18); }
.footer-divider::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--primary-tint-200);
  animation: signal-travel 8s linear infinite;
}
@media (prefers-reduced-motion: reduce) { .footer-divider::before { animation: none; } }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding-block: 20px;
  font-size: 13px;
  color: var(--primary-tint-200);
}

/* WhatsApp bubble */
.whatsapp-btn {
  position: fixed;
  bottom: calc(24px + env(safe-area-inset-bottom, 0px));
  right: 24px;
  z-index: 90;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-2), 0 0 0 3px var(--surface-container-lowest);
  transition: transform 150ms ease, box-shadow 150ms ease;
}
.whatsapp-btn:hover { transform: scale(1.06); box-shadow: var(--shadow-3), 0 0 0 3px var(--surface-container-lowest); }
.whatsapp-btn svg { width: 28px; height: 28px; color: #fff; }
.whatsapp-btn.pulse-once { animation: wa-pulse 1.6s ease-out 1; }
@keyframes wa-pulse {
  0% { box-shadow: var(--shadow-2), 0 0 0 3px var(--surface-container-lowest), 0 0 0 0 rgba(37, 211, 102, 0.5); }
  100% { box-shadow: var(--shadow-2), 0 0 0 3px var(--surface-container-lowest), 0 0 0 24px rgba(37, 211, 102, 0); }
}
@media (prefers-reduced-motion: reduce) { .whatsapp-btn.pulse-once { animation: none; } }

@media (max-width: 767px) {
  .whatsapp-btn { right: 16px; bottom: calc(16px + env(safe-area-inset-bottom, 0px)); }
}