/* Navigation Component */
.navigation {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: var(--backdrop-blur-xl);
  border-bottom: 1px solid rgba(59, 130, 246, 0.15);
  height: var(--nav-height);
  transition: var(--transition-smooth);
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.12),
    0 2px 8px rgba(59, 130, 246, 0.08);
}

.navigation.scrolled {
  background: rgba(15, 23, 42, 0.95);
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.2),
    0 2px 8px rgba(59, 130, 246, 0.12);
}

.nav-container {
  max-width: var(--container-2xl);
  margin: 0 auto;
  padding: 0 var(--spacing-8);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.nav-logo {
  font-family: var(--font-primary);
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-secondary);
  text-decoration: none;
  letter-spacing: -0.05em;
  transition: var(--transition-normal);
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.nav-logo:hover {
  color: var(--color-secondary-dark);
  transform: scale(1.05);
}

.nav-logo:focus {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
  color: var(--color-secondary);
}

/* Navigation Menu */
.nav-menu {
  display: flex;
  list-style: none;
  align-items: center;
  gap: var(--spacing-4);
  margin: 0;
  padding: 0;
}

.nav-menu li {
  position: relative;
  margin: 0;
}

.nav-link {
  display: block;
  padding: var(--spacing-2) var(--spacing-4);
  color: var(--text-light);
  font-family: var(--font-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  border-radius: var(--radius-xl);
  transition: var(--transition-smooth);
  white-space: nowrap;
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(251, 191, 36, 0.1), transparent);
  transition: var(--transition-slow);
}

.nav-link:hover::before {
  left: 100%;
}

.nav-link:hover,
.nav-link:focus {
  color: var(--color-secondary);
  background: rgba(251, 191, 36, 0.1);
  border-color: rgba(251, 191, 36, 0.2);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(251, 191, 36, 0.2);
}

.nav-link.active {
  color: var(--color-secondary);
  background: rgba(251, 191, 36, 0.15);
  border-color: rgba(251, 191, 36, 0.3);
  box-shadow: 0 4px 15px rgba(251, 191, 36, 0.25);
}

/* Dropdown Menu */
.dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: var(--backdrop-blur-xl);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(251, 191, 36, 0.2);
  box-shadow: var(--shadow-2xl);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--transition-smooth);
  min-width: 220px;
  z-index: var(--z-dropdown);
  margin-top: var(--spacing-2);
  padding: var(--spacing-1);
  list-style: none;
}

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

.dropdown-link {
  display: block;
  padding: var(--spacing-3) var(--spacing-5);
  color: var(--text-light);
  font-size: var(--font-size-sm);
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: var(--transition-normal);
  margin: var(--spacing-1);
}

.dropdown-link:hover,
.dropdown-link:focus {
  color: var(--color-secondary);
  background: rgba(251, 191, 36, 0.1);
  transform: translateX(5px);
}

/* Navigation Actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

/* Language Switcher */
.language-switcher {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2) var(--spacing-3);
}

.lang-btn {
  background: none;
  border: none;
  color: var(--text-light);
  font-family: var(--font-secondary);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  padding: var(--spacing-1) var(--spacing-2);
  border-radius: var(--radius-lg);
  transition: var(--transition-normal);
  min-width: 32px;
}

.lang-btn:hover {
  color: var(--color-secondary);
  background: rgba(251, 191, 36, 0.1);
}

.lang-btn.active {
  color: var(--color-secondary);
  background: rgba(251, 191, 36, 0.2);
}

.lang-btn:focus {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-secondary);
  font-size: var(--font-size-2xl);
  cursor: pointer;
  padding: var(--spacing-2);
  border-radius: var(--radius-lg);
  transition: var(--transition-normal);
  position: relative;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
}

.mobile-menu-toggle:hover {
  background: rgba(251, 191, 36, 0.1);
}

.mobile-menu-toggle:focus {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

/* Hamburger Animation */
.hamburger {
  display: block;
  position: relative;
  width: 20px;
  height: 2px;
  background: var(--color-secondary);
  border-radius: var(--radius-full);
  transition: var(--transition-normal);
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background: var(--color-secondary);
  border-radius: var(--radius-full);
  transition: var(--transition-normal);
}

.hamburger::before {
  top: -6px;
}

.hamburger::after {
  top: 6px;
}

.mobile-menu-toggle.active .hamburger {
  background: transparent;
}

.mobile-menu-toggle.active .hamburger::before {
  top: 0;
  transform: rotate(45deg);
}

.mobile-menu-toggle.active .hamburger::after {
  top: 0;
  transform: rotate(-45deg);
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .navigation {
    height: var(--nav-height-mobile);
    transition: var(--transition-smooth);
  }
  
  .nav-container {
    padding: 0 var(--spacing-4);
  }
  
  .nav-logo {
    font-size: var(--font-size-lg);
  }
  
  .nav-menu {
    position: fixed;
    top: var(--nav-height-mobile);
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.98);
    backdrop-filter: var(--backdrop-blur-xl);
    flex-direction: column;
    align-items: stretch;
    padding: var(--spacing-4);
    gap: var(--spacing-2);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-smooth);
    box-shadow: var(--shadow-2xl);
    max-height: calc(100vh - var(--nav-height-mobile));
    overflow-y: auto;
    z-index: var(--z-dropdown);
  }
  
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-menu li {
    width: 100%;
  }
  
  .nav-link {
    padding: var(--spacing-4);
    text-align: center;
    font-size: var(--font-size-base);
    border-radius: var(--radius-lg);
    margin: var(--spacing-1) 0;
  }
  
  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    background: rgba(255, 255, 255, 0.05);
    margin: var(--spacing-2) 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
  }
  
  .dropdown-link {
    padding: var(--spacing-3) var(--spacing-6);
    text-align: center;
    font-size: var(--font-size-sm);
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .language-switcher {
    margin-left: 0;
    padding: var(--spacing-1) var(--spacing-2);
  }
  
  .lang-btn {
    font-size: var(--font-size-xs);
    padding: var(--spacing-1);
    min-width: 28px;
  }
}

@media (max-width: 480px) {
  .nav-container {
    padding: 0 var(--spacing-3);
  }
  
  .nav-logo {
    font-size: var(--font-size-base);
  }
  
  .language-switcher {
    gap: var(--spacing-1);
  }
  
  .lang-btn {
    font-size: 10px;
    padding: 2px var(--spacing-1);
    min-width: 24px;
  }
}

/* Navigation Accessibility */
@media (prefers-reduced-motion: reduce) {
  .nav-link::before {
    display: none;
  }
  
  .nav-menu {
    transition: none;
  }
  
  .dropdown-menu {
    transition: none;
  }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  .navigation {
    background: var(--bg-primary);
    border-bottom: 2px solid var(--color-secondary);
  }
  
  .nav-link {
    border: 1px solid transparent;
  }
  
  .nav-link:hover,
  .nav-link:focus {
    border-color: var(--color-secondary);
  }
}