/* ==============================================================================
   HEADER / NAV — Sticky, mobile-first
   ============================================================================== */

.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-bg);
  box-shadow: var(--shadow-sm);
  flex-basis: auto !important; /* override container.css */
}

/* Logo responsive */
.navbar-brand img {
  width: auto;
  height: 72px;
  max-width: 220px;
}

@media (min-width: 992px) {
  .navbar-brand img {
    height: 88px;
    max-width: 280px;
  }
}

/* Container layout */
.navbar > .container-fluid {
  display: flex;
  flex-direction: row;
  align-items: center;
  flex-wrap: nowrap;
}

@media (min-width: 992px) {
  .navbar > .container-fluid {
    justify-content: space-between;
    padding: 0 2rem;
  }
  .navbar-collapse {
    flex-grow: 0 !important;
  }
}

/* Nav links */
.header__ul {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin: 0;
  padding: 0.5rem 0;
}

@media (min-width: 992px) {
  .header__ul {
    gap: 0.5rem;
    padding: 0;
  }
}

.header__ul .header__li {
  text-decoration: none;
  color: var(--color-primary);
  font-size: 1rem;
  font-weight: 500;
}

.header__ul .header__li:last-child {
  color: var(--color-light);
  background: var(--color-primary-80);
  border-radius: var(--radius-full);
  padding: 6px 20px;
  font-size: 0.95rem;
  transition: background var(--transition-base);
}

.header__ul .header__li:last-child:hover {
  background: var(--color-primary);
  color: var(--color-light) !important;
}

/* Underline effect for non-CTA links */
.nav-link {
  position: relative !important;
}

.nav-link::after {
  content: "" !important;
  opacity: 0 !important;
  transition: opacity var(--transition-base) !important;
  height: 2px !important;
  width: 100% !important;
  background-color: var(--color-primary) !important;
  position: absolute !important;
  bottom: 0 !important;
  left: 0 !important;
}

.nav-link:hover::after {
  opacity: 1 !important;
}

.nav-link:last-child::after {
  display: none !important;
}

.nav-link:focus,
.nav-link:hover {
  color: var(--color-primary) !important;
}

.nav-link:last-child:focus,
.nav-link:last-child:hover {
  color: var(--color-light) !important;
}