/* =========================================
   LAYOUT
   Navbar, mega-menu, mobile drawer,
   footer, and grid systems.
   ========================================= */

/* ── NAVBAR ──────────────────────────────── */

.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 0 32px;
  height: var(--nav-height);
  transition: padding var(--transition-slow), height var(--transition-slow);
}

.navbar.is-scrolled {
  height: 52px;
}

.navbar__inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

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

.navbar__logo-img {
  height: 30px;
  width: auto;
  display: block;
  transition: height var(--transition-slow);
}

.navbar.is-scrolled .navbar__logo-img {
  height: 24px;
}

/* ── NAV LINKS ───────────────────────────── */

.navbar__links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.navbar__link {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--nav-text);
  transition: color var(--transition-fast);
  letter-spacing: 0.02em;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 5px;
}

.navbar__link:hover,
.navbar__item--has-mega:hover .navbar__link {
  color: var(--nav-text-hover);
}

.navbar__link-chevron {
  width: 12px;
  height: 12px;
  opacity: 0.6;
  transition: transform var(--transition-fast);
}

.navbar__item--has-mega:hover .navbar__link-chevron {
  transform: rotate(180deg);
}

/* ── NAVBAR ACTIONS ──────────────────────── */

.navbar__actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.navbar__phone {
  font-size: 0.85rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  transition: color var(--transition-fast);
}

.navbar__phone:hover {
  color: #fff;
}

.navbar__cta {
  font-size: 0.82rem !important;
  padding: 8px 18px !important;
}

/* ── THEME TOGGLE ────────────────────────── */

.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.65);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.theme-toggle:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
}

.theme-toggle__sun  { display: block; }
.theme-toggle__moon { display: none; }

html.dark .theme-toggle__sun  { display: none; }
html.dark .theme-toggle__moon { display: block; }

/* ── HAMBURGER ───────────────────────────── */

.navbar__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
}

.navbar__hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 2px;
  transition: transform var(--transition-slow), opacity var(--transition-slow);
}

.navbar__hamburger.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.navbar__hamburger.is-active span:nth-child(2) {
  opacity: 0;
}

.navbar__hamburger.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── MEGA MENU ───────────────────────────── */

.mega-menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-bg-alt);
  border-top: 2px solid var(--color-accent);
  box-shadow: var(--shadow-lg);
  padding: 36px 40px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition-slow), transform var(--transition-slow),
              visibility var(--transition-slow);
  z-index: 99;
}

.navbar__item--has-mega:hover .mega-menu,
.mega-menu:focus-within {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mega-menu__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr) 240px;
  gap: 32px;
}

.mega-menu__category-title {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-navy);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

html.dark .mega-menu__category-title {
  color: var(--color-accent);
}

.mega-menu__category-icon {
  font-size: 1rem;
}

.mega-menu__list li {
  margin-bottom: 4px;
}

.mega-menu__link {
  display: block;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.mega-menu__link:hover {
  background: var(--color-sky);
}

html.dark .mega-menu__link:hover {
  background: var(--color-border);
}

.mega-menu__link-title {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text);
}

.mega-menu__link-desc {
  display: block;
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-top: 1px;
}

.mega-menu__cta {
  background: var(--color-sky);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

html.dark .mega-menu__cta {
  background: var(--color-border);
}

.mega-menu__cta-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  color: var(--color-navy-dark);
  margin-bottom: 8px;
}

html.dark .mega-menu__cta-title {
  color: var(--color-text);
}

.mega-menu__cta-text {
  font-size: 0.84rem;
  color: var(--color-text-muted);
  line-height: 1.55;
  margin-bottom: 18px;
}

.mega-menu__cta .btn {
  font-size: 0.85rem;
  padding: 10px 20px;
}

/* ── MOBILE NAVIGATION DRAWER ────────────── */

.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 900;
  visibility: hidden;
  pointer-events: none;
}

.mobile-nav.is-open {
  visibility: visible;
  pointer-events: auto;
}

.mobile-nav__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.mobile-nav.is-open .mobile-nav__overlay {
  opacity: 1;
}

.mobile-nav__drawer {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(380px, 85vw);
  background: var(--color-bg-alt);
  transform: translateX(100%);
  transition: transform 0.3s ease-in-out;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.mobile-nav.is-open .mobile-nav__drawer {
  transform: translateX(0);
}

.mobile-nav__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav__title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  color: var(--color-navy-dark);
}

html.dark .mobile-nav__title {
  color: var(--color-text);
}

.mobile-nav__close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.mobile-nav__close:hover {
  background: var(--color-sky);
}

.mobile-nav__links {
  flex: 1;
  padding: 12px 0;
}

.mobile-nav__link {
  display: block;
  padding: 14px 24px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  transition: background var(--transition-fast);
}

.mobile-nav__link:hover {
  background: var(--color-sky);
}

html.dark .mobile-nav__link:hover {
  background: var(--color-border);
}

.mobile-nav__group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mobile-nav__toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 12px;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.mobile-nav__toggle:hover {
  background: var(--color-sky);
}

.mobile-nav__toggle svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.mobile-nav__toggle.is-expanded svg {
  transform: rotate(180deg);
}

.mobile-nav__sub {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  background: var(--color-sky);
}

html.dark .mobile-nav__sub {
  background: rgba(0, 0, 0, 0.15);
}

.mobile-nav__sub.is-expanded {
  max-height: 800px;
}

.mobile-nav__sub a {
  display: block;
  padding: 10px 24px 10px 40px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.mobile-nav__sub a:hover {
  color: var(--color-accent);
}

.mobile-nav__footer {
  padding: 20px 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mobile-nav__phone {
  text-align: center;
  font-weight: 600;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ── SITE FOOTER ─────────────────────────── */

.site-footer {
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: 48px 24px 28px;
}

.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}

.site-footer__brand-name {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  color: #fff;
  margin-bottom: 8px;
}

.site-footer__brand p {
  font-size: 0.82rem;
  line-height: 1.6;
}

.site-footer__col h4 {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--footer-heading);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 14px;
}

.site-footer__col li {
  margin-bottom: 8px;
}

.site-footer__col a {
  font-size: 0.83rem;
  color: var(--footer-text);
  transition: color var(--transition-fast);
}

.site-footer__col a:hover {
  color: var(--footer-link-hover);
}

.site-footer__bottom {
  max-width: var(--max-width);
  margin: 32px auto 0;
  padding-top: 20px;
  border-top: 1px solid var(--footer-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.76rem;
}

.site-footer__bottom a {
  color: var(--footer-text);
  transition: color var(--transition-fast);
}

.site-footer__bottom a:hover {
  color: rgba(255, 255, 255, 0.75);
}

/* ── GRID SYSTEMS ────────────────────────── */

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 18px;
}

.grid-6 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 22px;
}

/* ── RESPONSIVE ──────────────────────────── */

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

  .mega-menu__cta {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .navbar__links {
    display: none;
  }

  .navbar__phone {
    display: none;
  }

  .navbar__hamburger {
    display: flex;
  }

  .navbar {
    padding: 0 20px;
  }

  .mega-menu {
    display: none;
  }

  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
  }

  .section {
    padding: 48px 20px;
  }
}

@media (max-width: 480px) {
  .site-footer__inner {
    grid-template-columns: 1fr;
  }

  .site-footer__bottom {
    flex-direction: column;
    text-align: center;
  }
}