/* ==========================================================================
   HEADER & NAVIGATION STYLES
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: var(--transition-smooth);
  background-color: var(--primary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1.25rem 0;
}

/* Header style when scrolled */
.header.scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  padding: 0.75rem 0;
  box-shadow: var(--shadow-sm);
  border-bottom: 1px solid rgba(0, 5, 137, 0.15);
}

.header.scrolled .nav-link,
.header.scrolled .dropdown-toggle {
  color: #000000;
  font-weight: 600;
}

.header.scrolled .logo-light {
  display: none;
}

.header.scrolled .logo-dark {
  display: block;
}

/* Logos display */
.logo img {
  height: 38px;
  width: auto;
}

.logo-dark {
  display: none;
}

/* Navigation items */
.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 2rem;
}

.nav-item {
  position: relative;
}

.nav-link {
  font-family: var(--font-title);
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-light);
  padding: 0.5rem 0;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

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

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

.nav-link:hover {
  color: var(--text-light);
  opacity: 0.95;
}

.header.scrolled .nav-link:hover {
  color: var(--primary);
}

/* Dropdowns */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(15px);
  background-color: var(--bg-light);
  min-width: 260px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  padding: 0.75rem 0;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-smooth);
  border: 1px solid var(--border-color);
}

.dropdown-menu::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 12px;
  height: 12px;
  background-color: var(--bg-light);
  border-left: 1px solid var(--border-color);
  border-top: 1px solid var(--border-color);
}

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

.dropdown-item {
  display: block;
  padding: 0.75rem 1.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: #000000;
  transition: var(--transition-fast);
  position: relative;
  z-index: 2;
}

.dropdown-item:hover {
  background-color: var(--primary);
  color: var(--text-light);
}

/* Nav Action */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-btn {
  padding: 0.6rem 1.25rem;
  font-size: 0.75rem;
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

.mobile-toggle span {
  display: block;
  width: 25px;
  height: 2.5px;
  margin: 5px 0;
  background-color: var(--text-light);
  transition: var(--transition-smooth);
  border-radius: 2px;
}

.header.scrolled .mobile-toggle span {
  background-color: var(--primary);
}

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

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

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

.mobile-toggle.active span {
  background-color: var(--text-dark) !important;
}

/* Responsive navigation styles */
@media (max-width: 1150px) {
  .nav-menu, .nav-actions .btn {
    display: none;
  }
  
  .mobile-toggle {
    display: block;
  }

  .nav-menu.mobile-active {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    position: fixed;
    top: 0;
    right: 0;
    width: 320px;
    height: 100vh;
    background-color: var(--bg-light);
    box-shadow: var(--shadow-lg);
    padding: 6rem 2rem 2rem;
    gap: 1.5rem;
    z-index: 1000;
    transform: translateX(100%);
    transition: var(--transition-smooth);
    overflow-y: auto;
  }


  .nav-menu.mobile-active.open {
    transform: translateX(0);
  }

  .nav-menu.mobile-active .nav-item {
    width: 100%;
  }

  .nav-menu.mobile-active .nav-link {
    color: var(--text-dark);
    font-size: 1.15rem;
    width: 100%;
    justify-content: space-between;
  }

  .nav-menu.mobile-active .dropdown-menu {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    border: none;
    background-color: var(--bg-gray);
    padding-left: 1rem;
    margin-top: 0.5rem;
    display: none;
  }

  .nav-menu.mobile-active .dropdown-menu.open {
    display: block;
  }

  .nav-menu.mobile-active .dropdown-menu::before {
    display: none;
  }

  .nav-menu.mobile-active .dropdown-item {
    font-size: 1rem;
  }
}