/* Sticky Header Styles */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: rgba(10, 10, 10, 0.95);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  border-bottom: 1px solid rgba(0, 255, 0, 0.2);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;
  font-family: "Tilt Neon", sans-serif;
}

header.scrolled {
  padding: 0.7rem 2rem;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.5);
}

#logo img {
  height: 40px;
  width: auto;
  filter: drop-shadow(0 0 10px rgba(0, 255, 0, 0.5));
  transition: all 0.3s ease;
  animation: pulse 3s infinite;
}

header.scrolled #logo img {
  height: 35px;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
  position: relative;
}

.nav-links a:hover {
  color: #00ff00;
}

.nav-links a::after {
  content: "";
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -5px;
  left: 0;
  background-color: #00ff00;
  transition: width 0.3s;
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-links a.active {
  color: #00ff00;
}

.nav-links a.active::after {
  width: 100%; 
}

/* Hamburger button (hidden on large screens) */
.hamburger {
  display: none;
  width: 40px;
  height: 32px;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
}

.hamburger span {
  display: block;
  height: 2px;
  background: #fff;
  margin: 6px 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Animate to X when expanded */
.hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Responsive layout */
@media (max-width: 768px) {
  .hamburger {
    display: inline-block;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    gap: 0;
    background: rgba(10, 10, 10, 0.98);
    border-bottom: 1px solid rgba(0, 255, 0, 0.15);
    padding: 0.5rem 1rem 1rem;
  }

  .nav-links a {
    padding: 0.75rem 0.5rem;
  }

  header.menu-open .nav-links {
    display: flex;
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
    filter: drop-shadow(0 0 5px rgba(0, 255, 0, 0.5));
  }
  50% {
    transform: scale(1.05);
    filter: drop-shadow(0 0 15px rgba(0, 255, 0, 0.8));
  }
  100% {
    transform: scale(1);
    filter: drop-shadow(0 0 5px rgba(0, 255, 0, 0.5));
  }
}

/* Specificity overrides to protect navbar from page-level media queries */
#mainHeader {
  display: flex !important;
  flex-direction: row !important;
  align-items: center !important;
  justify-content: space-between !important;
}

#mainHeader #logo {
  display: flex !important;
  align-items: center !important;
  flex: 0 0 auto !important;
}

#mainHeader #logo img {
  max-height: 40px;
  width: auto;
}

#mainHeader .hamburger {
  margin-left: auto;
  flex: 0 0 auto;
  z-index: 1001; /* ensure above logo if overlapping */
}

#mainHeader .nav-links {
  flex: 0 0 auto;
}

@media (max-width: 768px) {
  #mainHeader {
    flex-wrap: nowrap !important;
  }

  #mainHeader .nav-links {
    position: absolute !important;
    top: 100% !important;
    right: 0 !important;
    left: 0 !important;
  }

  /* Force open state to win over page CSS that may hide nav */
  #mainHeader.menu-open .nav-links {
    display: flex !important;
  }
}