/* ============================================
   FlatMMO Navigation - Unified Styles
   ============================================ */

:root {
  /* Navigation specific variables */
  --navbar-height: 64px;
  --navbar-bg: #1a1f2e;
  --navbar-border: #2d3441;
  --navbar-brand: #00d4aa;
  --navbar-text: #b8c5d6;
  --navbar-text-hover: #ffffff;
  --navbar-active-bg: rgba(0, 212, 170, 0.1);
  --navbar-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  
  /* Layout */
  --content-max-width: 1400px;
  --nav-padding: 2rem;
}

/* ============================================
   Navigation Bar
   ============================================ */

.navbar {
  background: var(--navbar-bg);
  border-bottom: 1px solid var(--navbar-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--navbar-shadow);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.nav-container {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 var(--nav-padding);
  display: flex;
  align-items: center;
  justify-content: center;
  height: var(--navbar-height);
  gap: 3rem;
  position: relative;
}

.brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--navbar-brand);
  text-decoration: none;
  transition: transform 0.2s ease;
  letter-spacing: -0.01em;
}

.brand:hover {
  transform: scale(1.05);
}

.nav-links {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.nav-link {
  padding: 0.5rem 1rem;
  color: var(--navbar-text);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
  border-radius: 8px;
  transition: all 0.2s ease;
  position: relative;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--navbar-text-hover);
  background: rgba(37, 42, 58, 0.8);
}

.nav-link.active {
  color: var(--navbar-brand);
  background: var(--navbar-active-bg);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0.5rem;
  right: 0.5rem;
  height: 2px;
  background: var(--navbar-brand);
  border-radius: 1px;
}

/* Dropdown Navigation */
.nav-dropdown {
  position: relative;
  display: inline-block;
}

.nav-dropdown-toggle {
  padding: 0.5rem 1rem;
  color: var(--navbar-text);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
  border-radius: 8px;
  transition: all 0.2s ease;
  position: relative;
  white-space: nowrap;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-dropdown-toggle:hover {
  color: var(--navbar-text-hover);
  background: rgba(37, 42, 58, 0.8);
}

.nav-dropdown-toggle.active {
  color: var(--navbar-brand);
  background: var(--navbar-active-bg);
}

.nav-dropdown-toggle.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0.5rem;
  right: 0.5rem;
  height: 2px;
  background: var(--navbar-brand);
  border-radius: 1px;
}

.nav-dropdown-arrow {
  font-size: 0.75rem;
  transition: transform 0.2s ease;
}

.nav-dropdown:hover .nav-dropdown-arrow {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--navbar-bg);
  border: 1px solid var(--navbar-border);
  border-radius: 8px;
  box-shadow: var(--navbar-shadow);
  min-width: 180px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.2s ease;
  z-index: 1001;
  margin-top: 0.5rem;
}

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

.nav-dropdown-item {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--navbar-text);
  text-decoration: none;
  font-size: 0.875rem;
  transition: all 0.2s ease;
  border-bottom: 1px solid var(--navbar-border);
}

.nav-dropdown-item:last-child {
  border-bottom: none;
}

.nav-dropdown-item:hover {
  color: var(--navbar-text-hover);
  background: rgba(37, 42, 58, 0.8);
}

.nav-dropdown-item.active {
  color: var(--navbar-brand);
  background: var(--navbar-active-bg);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 2rem;
  height: 2rem;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
  position: absolute;
  right: var(--nav-padding);
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

.mobile-menu-toggle span {
  width: 2rem;
  height: 0.25rem;
  background: var(--navbar-text-hover);
  border-radius: 10px;
  transition: all 0.3s linear;
  position: relative;
  transform-origin: 1px;
}

.mobile-menu-toggle.active span:first-child {
  transform: rotate(45deg);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg);
}

/* Mobile Menu */
.nav-links.mobile-open {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--navbar-bg);
  border-top: 1px solid var(--navbar-border);
  padding: 1rem;
  box-shadow: var(--navbar-shadow);
  z-index: 1000;
  gap: 0.25rem;
}

.nav-links.mobile-open .nav-link {
  padding: 0.75rem 1rem;
  border-radius: 6px;
  text-align: center;
}

/* Mobile Sidebar Toggle (for monster highscores) */
.mobile-sidebar-toggle {
  display: none;
  background: rgba(37, 42, 58, 0.8);
  border: 1px solid var(--navbar-border);
  border-radius: 8px;
  padding: 0.5rem;
  cursor: pointer;
  font-size: 1.125rem;
  transition: all 0.2s ease;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  position: absolute;
  right: calc(var(--nav-padding) + 3rem);
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

.mobile-sidebar-toggle:hover {
  background: rgba(37, 42, 58, 1);
  border-color: var(--navbar-brand);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
  :root {
    --nav-padding: 1rem;
  }
  
  .nav-container {
    padding: 0 var(--nav-padding);
    gap: 2rem;
  }
  
  .nav-links {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .mobile-sidebar-toggle {
    display: flex;
    right: calc(var(--nav-padding) + 3rem);
  }
  
  .nav-links.mobile-open {
    display: flex;
  }

  /* Mobile dropdown styles */
  .nav-dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    background: transparent;
    margin-top: 0;
    margin-left: 1rem;
  }

  .nav-dropdown-item {
    padding: 0.5rem 0;
    border-bottom: none;
    font-size: 0.875rem;
  }
  
  .brand {
    font-size: 1.25rem;
  }
}

@media (max-width: 480px) {
  .nav-container {
    gap: 1.5rem;
  }
  
  .mobile-sidebar-toggle {
    right: calc(var(--nav-padding) + 2.5rem);
  }
  
  .brand {
    font-size: 1.125rem;
  }
}

/* ============================================
   Accessibility
   ============================================ */

.nav-link:focus-visible,
.mobile-menu-toggle:focus-visible,
.mobile-sidebar-toggle:focus-visible {
  outline: 2px solid var(--navbar-brand);
  outline-offset: 2px;
}

/* Skip link for screen readers */
.skip-nav {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--navbar-brand);
  color: white;
  padding: 0.5rem 1rem;
  text-decoration: none;
  font-weight: 600;
  border-radius: 4px;
  z-index: 10000;
}

.skip-nav:focus {
  top: 1rem;
  left: 1rem;
}

/* ============================================
   Print Styles
   ============================================ */

@media print {
  .navbar {
    display: none !important;
  }
}