/* ==========================================================================
   Navigation Styles
   ========================================================================== */

/* Header Container */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(0, 0, 0, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 10px rgba(0, 71, 171, 0.3);
  border-bottom: 1px solid rgba(0, 71, 171, 0.2);
  z-index: 1000;
  transition: all var(--transition-base);
}

.header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 71, 171, 0.4);
  background-color: rgba(0, 0, 0, 0.98);
}

/* Navigation Bar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: white;
  transition: color var(--transition-fast);
}

.logo:hover {
  color: var(--accent-color);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 1.25rem;
  box-shadow: 0 2px 8px rgba(0, 71, 171, 0.5);
}

.logo-image {
  height: 60px;
  width: auto;
  object-fit: contain;
  margin-right: 0;
  transition: transform var(--transition-base);
}

.logo:hover .logo-image {
  transform: scale(1.05);
}

/* Navigation Menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-link {
  position: relative;
  font-size: var(--font-size-base);
  font-weight: 500;
  color: #e8e8e8;
  padding: 0.5rem 0;
  transition: color var(--transition-fast);
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  transition: width var(--transition-base);
}

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

/* Dropdown Menu */
.nav-item {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background-color: var(--background-card);
  border: 1px solid var(--border-color);
  box-shadow: 0 10px 25px rgba(0, 71, 171, 0.3);
  border-radius: 0;
  padding: 0.75rem 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-base);
  margin-top: 0.5rem;
}

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

.dropdown-link {
  display: block;
  padding: 0.75rem 1.5rem;
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.dropdown-link:hover {
  background-color: var(--background-light);
  color: var(--primary-color);
  padding-left: 2rem;
}

/* CTA Button in Nav */
.nav-cta {
  margin-left: 1rem;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 0.5rem;
  cursor: pointer;
  z-index: 1001;
}

.hamburger-line {
  width: 28px;
  height: 3px;
  background-color: white;
  border-radius: 2px;
  transition: all var(--transition-base);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translateY(10px);
}

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

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translateY(-10px);
}

/* Search Bar */
.nav-search {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background-color: var(--background-light);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-fast);
}

.nav-search:focus-within {
  background-color: white;
  box-shadow: var(--shadow-md);
}

.nav-search input {
  border: none;
  background: transparent;
  outline: none;
  width: 200px;
  color: var(--text-primary);
}

.nav-search input::placeholder {
  color: var(--text-light);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .nav-menu {
    gap: 1.5rem;
  }

  .nav-search input {
    width: 150px;
  }
}

@media (max-width: 768px) {
  .logo-image {
    height: 50px;
  }

  .logo span {
    font-size: 1rem;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 400px;
    height: 100vh;
    background-color: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(10px);
    border-left: 1px solid rgba(0, 71, 171, 0.3);
    flex-direction: column;
    align-items: flex-start;
    padding: 5rem 2rem 2rem;
    gap: 0;
    box-shadow: -10px 0 30px rgba(0, 71, 171, 0.3);
    transition: right var(--transition-base);
    overflow-y: auto;
  }

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

  .nav-item {
    width: 100%;
    border-bottom: 1px solid var(--border-color);
  }

  .nav-link {
    display: block;
    padding: 1rem 0;
    font-size: var(--font-size-lg);
  }

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

  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    padding-left: 1rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
  }

  .nav-item:hover .dropdown-menu,
  .nav-item.active .dropdown-menu {
    max-height: 500px;
  }

  .dropdown-link {
    padding: 0.625rem 1rem;
  }

  .nav-search {
    width: 100%;
    margin-top: 1rem;
  }

  .nav-search input {
    width: 100%;
  }

  .nav-cta {
    width: 100%;
    margin: 1rem 0 0 0;
  }

  .nav-cta .btn {
    width: 100%;
  }

  /* Overlay when mobile menu is open */
  .nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 999;
  }

  .nav-overlay.active {
    opacity: 1;
    visibility: visible;
  }
}

/* Accessibility */
.nav-link:focus,
.dropdown-link:focus,
.mobile-menu-toggle:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Sticky Navigation Animation */
@keyframes slideDown {
  from {
    transform: translateY(-100%);
  }
  to {
    transform: translateY(0);
  }
}

.header.scrolled {
  animation: slideDown 0.3s ease-out;
}