/* Navigation — main site navigation bar with logo, links, search, and compact scroll variant */

.nav {
  position: sticky;
  /* Offset below the mock banner (28px tall) */
  top: 28px;
  /* Above content, below modals (1000) */
  z-index: 100;
  background: var(--white);
  box-shadow: var(--shadow-nav);
  padding: 18px 36px 24px;
  display: flex;
  justify-content: center;
  transition: padding 0.3s ease;
}

.nav__inner {
  display: flex;
  gap: 48px;
  align-items: flex-start;
  width: 100%;
  max-width: var(--container-max);
}

.nav__logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  align-self: center;
}

.nav__logo img {
  transition: height 0.3s ease;
}

.nav__logo svg {
  height: 40px;
  width: auto;
}

.nav__right {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 18px;
  transition: gap 0.3s ease;
}

.nav__sub-menu {
  display: flex;
  gap: 24px;
  overflow: hidden;
  max-height: 24px;
  opacity: 1;
  transition: max-height 0.3s ease, opacity 0.2s ease, margin 0.3s ease;
}

/* Compact nav on scroll */
.nav--compact {
  padding: 8px 36px 12px;
}

.nav--compact .nav__logo img {
  height: 40px;
}

.nav--compact .nav__inner {
  align-items: center;
}

.nav--compact .nav__right {
  gap: 0;
}

.nav--compact .nav__sub-menu {
  max-height: 0;
  opacity: 0;
  margin: 0;
}

.nav--compact .nav__link--active::after {
  bottom: -19px;
}

.nav__sub-link {
  font-size: var(--fs-small);
  color: var(--text-primary);
  text-decoration: none;
  padding-bottom: 3px;
}

.nav__sub-link:hover {
  color: var(--text-link);
}

.nav__main-menu {
  display: flex;
  gap: 30px;
  align-items: center;
}

.nav__link {
  font-size: 15px;
  font-weight: var(--fw-bold);
  color: var(--text-primary);
  text-decoration: none;
  position: relative;
  padding-bottom: 4px;
}

.nav__link:hover {
  color: var(--petroleum);
}

.nav__link--active {
  color: var(--petroleum);
}

.nav__link--active::after {
  content: "";
  position: absolute;
  /* Aligns indicator with bottom edge of full nav */
  bottom: -26px;
  left: 0;
  right: 0;
  height: 5px;
  background: var(--petroleum);
}

.nav__divider {
  width: 1px;
  height: 18px;
  background: var(--gray-300);
}

.nav__search {
  color: var(--petroleum);
  font-size: 18px;
  padding: 0;
  display: flex;
  align-items: center;
}

@media (max-width: 640px) {
  .nav__main-menu {
    display: none;
  }

  .nav__sub-menu {
    display: none;
  }
}