/* ============================================================
   HRHK Solutions — Navigation CSS
   File: assets/css/navigation.css
   Purpose: Header, mega-menu, mobile nav, breadcrumbs
   ============================================================ */

/* --- Header --- */
.header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
}

.header__logo:hover {
  text-decoration: none;
  color: var(--color-primary);
}

.header__logo img {
  height: 36px;
  width: auto;
}

.header__logo-text {
  letter-spacing: -0.02em;
}

/* --- Primary Navigation --- */
.nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav__list {
  display: flex;
  list-style: none;
  gap: var(--space-md);
  margin: 0;
  padding: 0;
}

.nav__link {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) 0;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition-fast);
  position: relative;
}

.nav__link:hover {
  color: var(--color-accent);
  text-decoration: none;
}

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

.nav__link--active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-accent);
}

/* Mega Menu Trigger */
.nav__trigger {
  cursor: pointer;
}

.nav__trigger::after {
  content: '\25BE';
  font-size: 10px;
  transition: transform var(--transition-fast);
}

.nav__trigger[aria-expanded="true"]::after {
  transform: rotate(180deg);
}

/* --- Utility Nav --- */
.nav__utility {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-left: var(--space-lg);
  padding-left: var(--space-lg);
  border-left: 1px solid var(--color-border);
}

.nav__utility-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.nav__utility-link:hover {
  color: var(--color-accent);
  text-decoration: none;
}

/* --- Mega Menu --- */
.mega-menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2xl) 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-base);
  z-index: var(--z-dropdown);
}

.mega-menu[aria-hidden="false"] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mega-menu__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2xl);
}

.mega-menu__group-title {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
}

.mega-menu__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.mega-menu__link {
  display: block;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--text-sm);
  color: var(--color-text);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.mega-menu__link:hover {
  background-color: var(--color-bg-alt);
  color: var(--color-accent);
  text-decoration: none;
}

/* --- Mobile Menu Toggle --- */
.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav__toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text);
  transition: all var(--transition-base);
  transform-origin: center;
}

.nav__toggle[aria-expanded="true"] span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.nav__toggle[aria-expanded="true"] span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Mobile Navigation --- */
@media (max-width: 1024px) {
  .nav__toggle {
    display: flex;
  }

  .nav__list {
    display: none;
  }

  .nav__utility {
    display: none;
  }

  .nav--open .nav__list,
  .nav--open .nav__utility {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-bg);
    padding: var(--space-xl);
    overflow-y: auto;
    z-index: var(--z-overlay);
  }

  .nav--open .nav__list {
    gap: var(--space-md);
  }

  .nav--open .nav__link {
    font-size: var(--text-lg);
    padding: var(--space-md) 0;
  }

  .nav--open .nav__utility {
    position: static;
    border-left: none;
    margin-left: 0;
    padding-left: 0;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
    margin-top: var(--space-lg);
  }

  .mega-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border-bottom: none;
    padding: var(--space-md) 0;
  }

  .mega-menu__inner {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
}

/* --- Footer --- */
.footer {
  background-color: var(--color-primary-dark);
  color: var(--color-text-inverse);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

@media (max-width: 1024px) {
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }
}

.footer__heading {
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-inverse);
  margin-bottom: var(--space-md);
}

.footer__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__link {
  font-size: var(--text-sm);
  color: var(--color-text-inverse);
  opacity: 0.7;
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.footer__link:hover {
  opacity: 1;
  text-decoration: none;
  color: var(--color-text-inverse);
}

.footer__bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer__copyright {
  font-size: var(--text-sm);
  opacity: 0.6;
}

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

.footer__legal-link {
  font-size: var(--text-sm);
  color: var(--color-text-inverse);
  opacity: 0.6;
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.footer__legal-link:hover {
  opacity: 1;
  text-decoration: none;
}