/* Navbar and Header Styling */

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: rgba(4, 53, 82, 0.95); /* Semi-transparent dark navy */
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 2px solid var(--color-primary);
  transition: background-color var(--transition-speed) ease;
}

.header-scrolled {
  background-color: var(--color-secondary);
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.logo-link {
  display: flex;
  align-items: center;
}

.logo-image {
  height: 50px;
  width: auto;
}

/* Nav Menu */
.nav-menu {
  display: flex;
  list-style: none;
  gap: 30px;
  align-items: center;
}

.nav-item {
  position: relative;
}

.nav-link {
  color: rgba(250, 248, 245, 0.9) !important; /* Off-white text */
  font-family: var(--font-headlines);
  font-weight: 600;
  font-size: 1rem;
  padding: 8px 0;
  position: relative;
  cursor: pointer;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-speed) ease;
}

.nav-link:hover::after,
.nav-link-active::after {
  width: 100%;
}

/* Dropdown Menu */
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background-color: var(--color-secondary);
  border: 1px solid var(--color-primary);
  border-radius: var(--border-radius);
  min-width: 220px;
  padding: 10px 0;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
  transition: all var(--transition-speed) ease;
  z-index: 1010;
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-link {
  display: block;
  padding: 10px 20px;
  color: rgba(250, 248, 245, 0.8) !important;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all var(--transition-speed) ease;
}

.dropdown-link:hover {
  background-color: var(--color-primary);
  color: #ffffff !important;
  padding-left: 25px;
}

/* Mobile Toggle Hamburger */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1020;
}

.mobile-toggle span {
  display: block;
  width: 28px;
  height: 3px;
  background-color: #ffffff;
  margin: 6px 0;
  transition: all 0.4s ease;
  border-radius: 2px;
}

/* Hamburger active transformation */
.mobile-toggle.active span:nth-child(1) {
  transform: rotate(-45deg) translate(-5px, 6px);
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
  transform: rotate(45deg) translate(-5px, -6px);
}

/* Responsive Navbar Media Query */
@media (max-width: 991px) {
  .mobile-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    right: -100%;
    width: 280px;
    height: calc(100vh - var(--header-height));
    background-color: var(--color-secondary);
    flex-direction: column;
    align-items: flex-start;
    padding: 40px 30px;
    gap: 20px;
    transition: right 0.4s ease;
    border-left: 2px solid var(--color-primary);
    overflow-y: auto;
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-item {
    width: 100%;
  }

  .nav-link {
    display: block;
    width: 100%;
    padding: 10px 0;
  }

  .nav-link::after {
    display: none;
  }

  .nav-dropdown {
    position: static;
    transform: none !important;
    opacity: 1;
    visibility: visible;
    background-color: rgba(8, 85, 150, 0.2);
    border: none;
    box-shadow: none;
    padding: 5px 0 5px 15px;
    margin-top: 5px;
    display: none; /* Controlled by JS toggle on click if needed */
  }
  
  .nav-item:hover .nav-dropdown {
    display: block;
  }

  .dropdown-link {
    padding: 8px 10px;
  }
}