/* Navigation Styles */
.main-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(157, 0, 255, 0.3);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  transition: background var(--transition-normal), box-shadow var(--transition-normal);
}

.main-nav.scrolled {
  background: rgba(10, 10, 15, 0.98);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.7);
}

.nav-container {
  max-width: 1600px;
  margin: 0 auto;
  padding: var(--spacing-sm) var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.nav-brand {
  flex-shrink: 0;
}

.nav-brand-link {
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: opacity var(--transition-normal);
}

.nav-brand-link:hover {
  opacity: 0.8;
}

.nav-title {
  font-family: var(--font-header);
  font-size: 1.8rem;
  color: #b30000;
  /* Improved contrast from #8b0000 */
  text-shadow: 0 0 20px rgba(179, 0, 0, 0.8);
  letter-spacing: 2px;
  margin: 0;
}

/* Hamburger Menu Button */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 12px;
  /* Increased from 8px for better touch target */
  z-index: 1001;
  min-width: 44px;
  /* WCAG 2.1 Level AAA compliant */
  min-height: 44px;
  justify-content: center;
  align-items: center;
}

.hamburger {
  width: 25px;
  height: 3px;
  background: var(--color-accent-neon);
  border-radius: 2px;
  transition: all var(--transition-normal);
  box-shadow: 0 0 10px rgba(0, 255, 65, 0.5);
}

.nav-toggle.active .hamburger:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

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

.nav-toggle.active .hamburger:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Navigation Menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex: 1;
  justify-content: center;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(26, 26, 46, 0.5);
  border: 1px solid var(--color-accent-purple);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(157, 0, 255, 0.3), transparent);
  transition: left 0.5s;
}

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

.nav-link:hover {
  background: rgba(157, 0, 255, 0.2);
  border-color: var(--color-accent-neon);
  color: var(--color-text-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(157, 0, 255, 0.4);
}

.nav-link.active {
  background: var(--color-accent-purple);
  border-color: var(--color-accent-neon);
  color: var(--color-text-primary);
  box-shadow: var(--glow-purple);
  position: relative;
}

/* Active indicator - doesn't rely solely on color (WCAG 1.4.1) */
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 3px;
  background: var(--color-accent-neon);
  border-radius: 2px;
  box-shadow: 0 0 10px var(--color-accent-neon);
}

/* Focus indicators for keyboard navigation (WCAG 2.4.7) */
.nav-link:focus-visible {
  outline: 2px solid var(--color-accent-neon);
  outline-offset: 4px;
  box-shadow: 0 0 0 4px rgba(0, 255, 65, 0.2);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--color-accent-neon);
  outline-offset: 4px;
  border-radius: 4px;
}

/* Remove default focus outline */
.nav-link:focus,
.nav-toggle:focus {
  outline: none;
}

.nav-icon {
  font-size: 1.2rem;
}

.nav-text {
  font-family: var(--font-body);
}

/* Sound Toggle in Nav */
.main-nav .sound-toggle {
  flex-shrink: 0;
}

/* Page Content */
.page-content {
  margin-top: 80px;
  min-height: calc(100vh - 80px);
}

/* Backdrop overlay for mobile menu */
.nav-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(2px);
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.nav-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.loading-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 50vh;
  gap: var(--spacing-md);
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav-title {
    font-size: 1.4rem;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 80px;
    right: -100%;
    width: min(280px, 85vw);
    /* Responsive width for small devices */
    max-width: 90vw;
    height: calc(100vh - 80px);
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(15px);
    /* Reduced from 20px for performance */
    border-left: 1px solid rgba(157, 0, 255, 0.3);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    transition: right var(--transition-normal);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.5);
    overflow-y: auto;
    will-change: right;
    /* Performance hint */
  }

  .nav-menu.active {
    right: 0;
    will-change: auto;
    /* Remove after animation */
  }

  .nav-link {
    width: 100%;
    justify-content: flex-start;
    padding: var(--spacing-md);
    font-size: 1rem;
  }

  /* Mobile active indicator on left side */
  .nav-link.active::after {
    bottom: auto;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 60%;
  }

  .nav-icon {
    font-size: 1.5rem;
  }

  /* Reduce backdrop-filter on mobile for performance */
  .main-nav {
    backdrop-filter: blur(8px);
  }

  /* Hide backdrop on desktop */
  .nav-backdrop {
    display: block;
  }
}

/* Very small mobile devices */
@media (max-width: 360px) {
  .nav-menu {
    width: 90vw;
    /* Full width on tiny screens */
  }

  .nav-title {
    font-size: 1.2rem;
    letter-spacing: 1px;
  }
}

/* Tablet */
@media (min-width: 768px) and (max-width: 1023px) {
  .nav-title {
    font-size: 1.6rem;
  }

  .nav-link {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.9rem;
  }

  .nav-icon {
    font-size: 1.1rem;
  }

  /* Hide backdrop on tablet and desktop */
  .nav-backdrop {
    display: none;
  }
}

/* Desktop - hide backdrop */
@media (min-width: 1024px) {
  .nav-backdrop {
    display: none;
  }
}

/* Animation for menu items */
@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.nav-menu.active .nav-link {
  animation: slideInRight 0.3s ease-out forwards;
}

.nav-menu.active .nav-link:nth-child(1) {
  animation-delay: 0.1s;
}

.nav-menu.active .nav-link:nth-child(2) {
  animation-delay: 0.2s;
}

.nav-menu.active .nav-link:nth-child(3) {
  animation-delay: 0.3s;
}

.nav-menu.active .nav-link:nth-child(4) {
  animation-delay: 0.4s;
}

.nav-menu.active .nav-link:nth-child(5) {
  animation-delay: 0.5s;
}

.nav-menu.active .nav-link:nth-child(6) {
  animation-delay: 0.6s;
}

/* Reduced motion support (WCAG 2.3.3) */
@media (prefers-reduced-motion: reduce) {

  /* Use higher specificity instead of !important */
  html .nav-link,
  html .nav-link::before,
  html .hamburger,
  html .nav-menu,
  html .nav-backdrop,
  html .main-nav {
    transition-duration: 0.01ms;
    animation-duration: 0.01ms;
  }

  .nav-menu.active .nav-link {
    animation: none;
  }

  /* Disable backdrop-filter for performance */
  .main-nav,
  .nav-menu {
    backdrop-filter: none;
    background: rgba(10, 10, 15, 0.98);
  }
}