/* =============================================================
   NAVBAR.CSS -- Public Landing Page Navbar
   Al Buraimi Ministry eServices Web Portal
   ============================================================= */

/* --- Base Navbar --- */
.navbar {
  position: fixed;
  top: 0;
  inset-inline: 0;
  z-index: 900;
  display: flex;
  align-items: flex-start;
  padding-inline: var(--space-6);
  padding-block: 0;
  overflow: visible;
  background: transparent;
}

/* Slim background via ::before.
   Height 72px when scrolled so the 120px logo overflows below,
   floating visually over the page content below the bar. */
.navbar::before {
  content: '';
  position: absolute;
  top: 0;
  inset-inline: 0;
  height: 0;
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  transition: height var(--transition-slow),
              background var(--transition-slow),
              backdrop-filter var(--transition-slow),
              box-shadow var(--transition-slow);
  z-index: -1;
  pointer-events: none;
}

.navbar.scrolled::before {
  height: var(--navbar-height);   /* covers full navbar grid height — no text cut-off */
  background: rgba(16, 28, 78, 0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 2px 24px rgba(10, 18, 53, 0.35);
}

/* --- Inner: CSS Grid 3 columns -- logo in center, no position:absolute --- */
.navbar__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-block: 8px;
}

/* --- Center Logo (grid column 2 -- auto width) --- */
.navbar__logo {
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  justify-self: center;
}

.navbar__logo img {
  height: 120px;
  width: auto;
  max-width: 280px;
  object-fit: contain;
  border-radius: 18px;
  filter: drop-shadow(0 2px 16px rgba(0, 0, 0, 0.55));
  transition: transform 0.28s ease, filter 0.28s ease;
  display: block;
}

.navbar__logo:hover img {
  transform: scale(1.05);
  filter: drop-shadow(0 4px 20px rgba(0, 0, 0, 0.6));
}

/* --- Navigation Links --- */
.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
  margin: 0;
  padding: 0;
}

.navbar__link {
  color: rgba(255, 255, 255, 0.88);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  position: relative;
  padding: 6px 0;
  letter-spacing: 0.02em;
  transition: color 0.22s ease;
  white-space: nowrap;
}

/* Underline grows from center on hover */
.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--color-accent-orange);
  border-radius: 2px;
  transition: width 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar__link:hover { color: var(--color-white); }

.navbar__link:hover::after,
.navbar__link.active::after { width: 100%; }

.navbar__link.active {
  color: var(--color-white);
  font-weight: 700;
}

/* --- Left nav (grid column 1) --- */
.navbar__nav--left {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  padding-inline-end: var(--space-8);
}

/* --- Right section (grid column 3) --- */
.navbar__right {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-6);
  padding-inline-start: var(--space-8);
}

.navbar__nav--right {
  display: flex;
  align-items: center;
}

/* --- Actions (lang + login) --- */
.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* --- Hamburger (mobile only) --- */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  cursor: pointer;
  padding: 0;
  background: none;
  border: none;
}

.hamburger__bar {
  width: 100%;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
  transform-origin: center;
}

.hamburger.open .hamburger__bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}
.hamburger.open .hamburger__bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.hamburger.open .hamburger__bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* --- Mobile Menu (hidden on desktop, shown only on mobile) --- */
.mobile-menu {
  display: none;               /* completely off-render-tree on desktop */
  position: fixed;
  top: var(--navbar-height);
  inset-inline: 0;
  background: rgba(10, 18, 53, 0.98);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: var(--space-6);
  z-index: 899;
  transform: translateY(-110%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-menu.open {
  transform: translateY(0);
}

.mobile-menu__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.mobile-menu__link {
  display: block;
  color: rgba(255, 255, 255, 0.88);
  font-size: var(--text-base);
  font-weight: 500;
  padding: var(--space-3) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.mobile-menu__link:hover {
  color: var(--color-white);
  padding-inline-start: var(--space-2);
}

.mobile-menu__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding-top: var(--space-4);
}

/* --- Responsive --- */
@media (max-width: 1100px) {
  .navbar__links { gap: var(--space-5); }
  .navbar__right { gap: var(--space-4); padding-inline-start: var(--space-6); }
  .navbar__nav--left { padding-inline-end: var(--space-6); }
  .navbar__logo img { height: 90px; }
}

@media (max-width: 900px) {
  .navbar { align-items: center; }
  .navbar__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-block: 8px;
  }
  .navbar__nav--left,
  .navbar__right { display: none; }
  .hamburger { display: flex; }
  .navbar__logo img { height: 64px; max-width: 180px; }
  .navbar.scrolled::before { height: 80px; }   /* logo is 64px + 8px×2 padding */

  /* Show mobile menu only on mobile */
  .mobile-menu { display: flex; }
}

@media (max-width: 480px) {
  .navbar { padding-inline: var(--space-4); }
}