/* Reset & global style */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #ffffff;
}

/* Navbar container */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #064440;
  padding: 1rem 2rem;
  color: white;
  position: sticky;
  top: 0;
  z-index: 1000;
}

/* Brand name */
.logo {
  font-size: 1.6rem;
  font-weight: bold;
  letter-spacing: 1px;
}

/* Navigation links */
.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

.nav-links li a {
  text-decoration: none;
  color: white;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
  display: inline-block;
  padding-left: 1rem;
}

/* Rainbow hover effect */
.nav-links li a:hover {
  background: linear-gradient(45deg, red, orange, yellow, green, cyan, blue, violet);
  background-size: 400%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: rainbowGlow 4s linear infinite;
  text-shadow: 0 0 5px rgba(255,255,255,0.3), 0 0 10px currentColor;
}

/* Rainbow animation */
@keyframes rainbowGlow {
  0% {
    background-position: 0%;
  }
  100% {
    background-position: 400%;
  }
}

/* Horizontal border between items */
.nav-links li {
  width: 100%;
  border-bottom: 1px solid #004d40;
}

.nav-links li:last-child {
  border-bottom: none;
}

/* Hamburger icon */
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: white;
  border-radius: 5px;
  transition: all 0.3s ease;
}

/* Hamburger open animation (transform to X) */
.hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Lightsaber Glow on X */
.hamburger.open span {
  box-shadow: 0 0 6px #00f0ff, 0 0 12px #00f0ff;
}

/* Responsive style */
@media (max-width: 768px) {
  .nav-links {
    position: absolute;
    top: 70px;
    right: 0;
    background-color: #05004bd6;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    overflow: hidden;
    max-height: 0;
    padding: 0;
    gap: 0;
    transition: max-height 0.4s ease;
  }

  .nav-links li a {
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    width: 100%;
  }

  .nav-links.active {
    max-height: 300px;
    padding: 1rem 0;
  }

  .hamburger {
    display: flex;
  }
}