/* Premium Navigation Stylesheet - Trinhism.com */

:root {
  --nav-accent: #00f0ff; /* Default Neon Blue */
  --nav-accent-rgb: 0, 240, 255;
  --nav-bg: rgba(5, 5, 5, 0.95);
  --nav-border: rgba(255, 255, 255, 0.08);
}

/* Scrollbar Customization for Navigation Drawer */
.nav-drawer-scroll::-webkit-scrollbar {
  width: 4px;
}
.nav-drawer-scroll::-webkit-scrollbar-track {
  background: transparent;
}
.nav-drawer-scroll::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
}
.nav-drawer-scroll::-webkit-scrollbar-thumb:hover {
  background: var(--nav-accent);
}

/* Position the hamburger wrapper absolutely to ensure it is always on the top left of the header, consistent on all pages */
.nav-hamburger-wrapper {
  position: absolute;
  left: 1.5rem; /* Matches px-6 padding of max-w-7xl container */
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  z-index: 1000;
}

/* Hamburger Button Custom Animations */
.nav-hamburger-btn {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
  transition: transform 0.3s ease;
}

.nav-hamburger-btn span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: #ffffff;
  border-radius: 2px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform-origin: left center;
}

.nav-hamburger-btn:hover span {
  background-color: var(--nav-accent);
  box-shadow: 0 0 8px var(--nav-accent);
}

/* Active Morphing State for Hamburger */
.nav-hamburger-btn.active span:nth-child(1) {
  transform: rotate(45deg) translateY(-2px);
  background-color: var(--nav-accent);
}

.nav-hamburger-btn.active span:nth-child(2) {
  width: 0%;
  opacity: 0;
}

.nav-hamburger-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translateY(2px);
  background-color: var(--nav-accent);
}

/* Overlay Backdrop */
.nav-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  pointer-events: none;
  z-index: 998;
  transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

/* Sidebar Drawer Container */
.nav-drawer {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 320px;
  background-color: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-right: 1px solid var(--nav-border);
  z-index: 999;
  transform: translateX(-100%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.4s ease;
  display: flex;
  flex-direction: column;
  box-shadow: 0 0 50px rgba(0, 0, 0, 0.8);
}

.nav-drawer.open {
  transform: translateX(0);
  border-right-color: rgba(var(--nav-accent-rgb), 0.2);
  box-shadow: 0 0 40px rgba(var(--nav-accent-rgb), 0.05), 0 0 80px rgba(0, 0, 0, 0.9);
}

/* Navigation Tree Classes */
.nav-tree-list {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.nav-tree-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-size: 0.875rem;
  font-weight: 500;
  color: #9ca3af; /* text-gray-400 */
  border-radius: 0.75rem;
  border: 1px solid transparent;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  user-select: none;
}

.nav-tree-item:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.05);
  transform: translateX(4px);
}

/* Active Nav Item Styling */
.nav-tree-item.active {
  color: #ffffff;
  background: rgba(var(--nav-accent-rgb), 0.06);
  border-color: rgba(var(--nav-accent-rgb), 0.15);
  box-shadow: inset 0 0 12px rgba(var(--nav-accent-rgb), 0.03);
  transform: translateX(4px);
  position: relative;
}

.nav-tree-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 25%;
  height: 50%;
  width: 3px;
  background-color: var(--nav-accent);
  border-radius: 0 4px 4px 0;
  box-shadow: 0 0 8px var(--nav-accent);
}

/* Chevron Rotator */
.nav-tree-chevron {
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  color: #4b5563; /* text-gray-600 */
}

.nav-tree-item:hover .nav-tree-chevron {
  color: #9ca3af;
}

.nav-tree-item.active .nav-tree-chevron {
  color: var(--nav-accent);
}

.nav-tree-parent.expanded .nav-tree-chevron {
  transform: rotate(90deg);
  color: var(--nav-accent);
}

/* Nested Subtree Container */
.nav-tree-children {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  margin-left: 1.25rem;
  padding-left: 0.75rem;
  border-left: 1px solid rgba(255, 255, 255, 0.04);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-top: 0.125rem;
}

.nav-tree-parent.expanded + .nav-tree-children {
  max-height: 500px; /* Large enough to fit subtrees comfortably */
}

/* Soft text glow effect */
.nav-text-glow {
  text-shadow: 0 0 12px rgba(var(--nav-accent-rgb), 0.3);
}

/* Pulse dot animation */
.nav-pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--nav-accent);
  box-shadow: 0 0 8px var(--nav-accent);
  animation: nav-pulse 2s infinite;
}

@keyframes nav-pulse {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(var(--nav-accent-rgb), 0.5);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 6px rgba(var(--nav-accent-rgb), 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(var(--nav-accent-rgb), 0);
  }
}