/* Header shell */
.nx-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: linear-gradient(180deg, 
    rgba(5, 5, 8, 0.85) 0%, 
    rgba(5, 5, 8, 0.92) 100%);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease-out, box-shadow 0.3s ease-out;
}

/* Enhanced header on scroll */
.nx-header.scrolled {
  background: linear-gradient(180deg, 
    rgba(5, 5, 8, 0.95) 0%, 
    rgba(5, 5, 8, 0.98) 100%);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

/* Gradient border effect */
.nx-header::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, 
    transparent 0%,
    rgba(255, 77, 90, 0.3) 20%,
    rgba(255, 159, 60, 0.4) 50%,
    rgba(147, 51, 234, 0.3) 80%,
    transparent 100%);
  opacity: 0.6;
  transition: opacity 0.3s ease-out;
}

.nx-header.scrolled::before {
  opacity: 0.8;
}

/* Subtle glow effect behind header */
.nx-header::after {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 100%;
  background: radial-gradient(ellipse at center, 
    rgba(255, 77, 90, 0.05) 0%, 
    transparent 70%);
  pointer-events: none;
  z-index: -1;
  transition: opacity 0.3s ease-out;
}

.nx-header.scrolled::after {
  opacity: 0.7;
}

.nx-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--nx-space-4);
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
  position: relative;
  z-index: 1;
}

/* Brand text */
.nx-logo {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  color: var(--nx-color-text);
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  z-index: 1002;
}

.nx-logo-text-main {
  font-weight: 700;
  letter-spacing: 0.16em;
  font-size: 0.85rem;
  text-transform: uppercase;
  background: linear-gradient(
    120deg,
    #ffffff 0%,
    var(--nx-color-primary-soft) 50%,
    var(--nx-color-primary) 100%
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: nx-logo-sheen 6s ease-in-out infinite;
}

@keyframes nx-logo-sheen {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.nx-logo-text-sub {
  font-weight: 400;
  letter-spacing: 0.12em;
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--nx-color-muted);
}

/* Navigation */
.nx-nav {
  flex: 1;
}

.nx-nav ul {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nx-nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--nx-color-muted);
  text-decoration: none;
  padding: 0.15rem 0;
  transition: color 0.18s ease-out;
}

.nx-nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.3rem;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    var(--nx-color-primary),
    var(--nx-color-primary-soft)
  );
  transition: width 0.18s ease-out;
}

.nx-nav-link:hover,
.nx-nav-link:focus-visible {
  color: var(--nx-color-text);
  text-shadow: 0 0 20px rgba(255, 77, 90, 0.3);
}

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

/* Right-side actions */
.nx-header-actions {
  display: flex;
  align-items: center;
  gap: var(--nx-space-3);
  position: relative;
  z-index: 1002;
}

.nx-header-cta {
  font-size: 0.8rem;
  position: relative;
  overflow: hidden;
}

.nx-header-cta::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.4s ease-out, height 0.4s ease-out;
}

.nx-header-cta:hover::before {
  width: 300px;
  height: 300px;
}

/* Burger - COMPLETELY REWRITTEN */
.nx-burger {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--nx-color-border);
  background: rgba(12, 12, 18, 0.96);
  padding: 0;
  cursor: pointer;
  position: relative;
  justify-content: center;
  align-items: center;
  transition: border-color 0.3s ease-out;
}

.nx-burger:hover {
  border-color: var(--nx-color-primary);
}

/* Burger spans - positioned absolutely for precise control */
.nx-burger span {
  position: absolute;
  display: block;
  width: 20px;
  height: 2px;
  background: var(--nx-color-text);
  border-radius: 999px;
  left: 50%;
  transform: translateX(-50%);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nx-burger span:nth-child(1) {
  top: 12px;
}

.nx-burger span:nth-child(2) {
  top: 19px;
}

.nx-burger span:nth-child(3) {
  top: 26px;
}

/* Burger animation when active - FIXED MATH */
.nx-burger.is-active span:nth-child(1) {
  top: 19px;
  transform: translateX(-50%) rotate(45deg);
}

.nx-burger.is-active span:nth-child(2) {
  opacity: 0;
  transform: translateX(-50%) scale(0);
}

.nx-burger.is-active span:nth-child(3) {
  top: 19px;
  transform: translateX(-50%) rotate(-45deg);
}

/* Responsive behavior */
@media (max-width: 900px) {
  .nx-nav ul {
    gap: 1.1rem;
    font-size: 0.8rem;
  }

  .nx-header-cta {
    display: none;
  }

  .nx-logo-text-sub {
    display: none;
  }
}

@media (max-width: 768px) {
  .nx-header-inner {
    justify-content: space-between;
  }

  .nx-logo {
    font-size: 0.75rem;
  }

  .nx-logo-text-sub {
    display: none;
  }

  /* Mobile navigation - COMPLETELY REWRITTEN */
  .nx-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    height: 100dvh; /* Dynamic viewport height for mobile */
    background: linear-gradient(180deg, 
      rgba(5, 5, 8, 0.98) 0%, 
      rgba(12, 12, 18, 0.96) 100%);
    backdrop-filter: blur(30px) saturate(150%);
    -webkit-backdrop-filter: blur(30px) saturate(150%);
    
    /* Start hidden off-screen */
    transform: translateX(100%);
    opacity: 0;
    visibility: hidden;
    
    /* Smooth transitions */
    transition: 
      transform 0.4s cubic-bezier(0.4, 0, 0.2, 1),
      opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1),
      visibility 0.4s;
    
    /* Center content */
    display: flex;
    align-items: center;
    justify-content: center;
    
    /* Above header but below logo/burger */
    z-index: 1001;
    
    /* Prevent scroll */
    overflow: hidden;
  }

  /* Mobile nav when open */
  .nx-nav.is-open {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
  }

  /* Menu list styling */
  .nx-nav ul {
    flex-direction: column;
    gap: 2.5rem;
    text-align: center;
    padding: 2rem;
    width: 100%;
    max-width: 400px;
  }

  /* Navigation links on mobile */
  .nx-nav-link {
    font-size: 1.5rem;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    display: block;
    width: 100%;
    transition: all 0.3s ease-out;
  }

  .nx-nav-link:hover {
    background: rgba(255, 77, 90, 0.1);
    border-radius: 12px;
  }

  .nx-nav-link::after {
    display: none; /* Remove underline on mobile */
  }

  .nx-header-actions {
    gap: var(--nx-space-2);
  }

  .nx-burger {
    display: flex;
  }
}

@media (max-width: 480px) {
  .nx-logo-text-main {
    font-size: 0.7rem;
    letter-spacing: 0.1em;
  }
  
  .nx-nav-link {
    font-size: 1.3rem;
  }
}

/* Dropdown container */
.has-dropdown {
  position: relative;
}

.nx-nav-toggle {
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  cursor: pointer;
  font: inherit;
  text-transform: inherit;
  letter-spacing: inherit;
  display: inline-flex;
  align-items: center;
  font-size: 0.85rem;
}

/* Basic mega dropdown */
.nx-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  transform-origin: top center;

  min-width: 260px;
  padding: 0.75rem 0.9rem;
  background: linear-gradient(135deg, 
    rgba(12, 12, 18, 0.95) 0%, 
    rgba(20, 20, 33, 0.92) 100%);
  backdrop-filter: blur(20px) saturate(150%);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  border-radius: var(--nx-radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 
    0 18px 40px rgba(0, 0, 0, 0.6),
    0 0 0 1px rgba(255, 77, 90, 0.1) inset;
  z-index: 1200;

  display: flex;
  flex-direction: column;
  gap: 0.2rem;

  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.18s ease-out,
    transform 0.18s ease-out;
}

/* Show on hover */
.has-dropdown:hover .nx-dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(4px);
}

/* Titles & links inside dropdown */
.nx-dropdown-title {
  margin: 0;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--nx-color-muted);
  font-weight: 600;
}

.nx-dropdown-link {
  display: block;
  font-size: 0.85rem;
  color: var(--nx-color-text);
  text-decoration: none;
  padding: 0.18rem 0.25rem;
  border-radius: var(--nx-radius-sm);
  opacity: 0.9;
  transition:
    background 0.16s ease-out,
    color 0.16s ease-out,
    transform 0.16s ease-out;
}

.nx-dropdown-link::before {
  content: "•";
  margin-right: 0.5rem;
  font-size: 0.7rem;
  color: var(--nx-color-primary-soft);
  opacity: 0;
  transform: translateX(-4px);
  transition:
    opacity 0.16s ease-out,
    transform 0.16s ease-out;
}

.nx-dropdown-link:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--nx-color-primary-soft);
  transform: translateX(3px);
}

.nx-dropdown-link:hover::before {
  opacity: 1;
  transform: translateX(0);
}

/* Mobile: dropdown behaves like normal list */
@media (max-width: 768px) {
  .nx-dropdown {
    position: static;
    transform: none;
    min-width: 0;
    padding: 0.75rem 1.25rem 1rem;
    border-radius: 0;
    border: none;
    box-shadow: none;
    grid-template-columns: 1fr;
    gap: 0.75rem;
    opacity: 0;
    pointer-events: none;
  }

  .has-dropdown.open .nx-dropdown {
    opacity: 1;
    pointer-events: auto;
  }
}