/* ============================================================
   NAVIGATION.CSS — Header, Mobile Menu, Contact Bar
   ============================================================ */

/* ─── FIXED NAVBAR ─── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 50;
  background: rgba(248, 249, 251, 0.8);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-nav);
  transition: all var(--transition-smooth);
}

.nav.nav--hidden {
  transform: translateY(-100%);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  padding-bottom: var(--space-md);
}

/* ─── BRAND / LOGO ─── */
.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav__logo-img {
  height: 40px;
  width: auto;
  object-fit: contain;
}

/* ─── NAV LINKS ─── */
.nav__links {
  display: none;
  align-items: center;
  gap: var(--space-xl);
}

.nav__links a {
  color: var(--on-surface-variant);
  transition: color var(--transition-fast);
}

.nav__links a:hover {
  color: var(--brand-navy);
}

.nav__links a:active {
  transform: scale(0.95);
}

/* ─── NAV CTA ─── */
.nav__cta {
  display: none;
}

/* ─── MOBILE TOGGLE ─── */
.nav__mobile-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.nav__mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--brand-navy);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.nav__mobile-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__mobile-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav__mobile-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ─── MOBILE MENU ─── */
.nav__mobile-menu {
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  height: 100vh;
  background: var(--brand-offwhite);
  padding: var(--space-lg);
  z-index: 49;

  /* Animation */
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-10px);
  transition: all var(--transition-smooth);
}

.nav__mobile-menu.active {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.nav__mobile-menu a {
  color: var(--brand-navy);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--border-subtle);
  font-weight: 700;
  font-size: 18px;
}

/* ─── STICKY CONTACT BAR (Mobile Only) ─── */
.contact-bar {
  display: flex;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 900;
  background: var(--brand-offwhite);
  border-top: 1px solid var(--border-subtle);
  padding: 0;
  box-shadow: 0 -4px 10px rgba(0, 0, 0, 0.05);
}

.contact-bar a {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem;
  color: var(--brand-navy);
  transition: background var(--transition-fast);
}

.contact-bar a:first-child {
  background: var(--whatsapp-green);
  color: var(--white);
}

.contact-bar a:hover {
  opacity: 0.9;
}