/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: #000e06;
  color: #ffffff;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
}

/* Header styles */
header {
  text-align: center;
  padding: 30px 20px;
  background-color: #013220;
}

header h1 {
  font-size: 2rem;
  margin-top: 15px;
  color: #00ffcc;
}

header h2 {
  font-size: 1.2rem;
  color: #aaffee;
  margin-top: 8px;
}

/* Circular logo image */
.top-image {
  width: 100px;
  height: 100px;
  object-fit: cover;
  border-radius: 50%;
  border: 2px solid #00ffcc;
  display: block;
  margin: 0 auto 10px auto;
}

/* Navigation */
nav {
  padding: 20px;
  max-height: 60vh;
  overflow-y: auto;
  background-color: #002811;
}

nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

nav ul li {
  flex: 1 1 200px;
  text-align: center;
}

nav ul li a {
  display: inline-block;
  padding: 10px 15px;
  text-decoration: none;
  background-color: #004d33;
  color: #00ffcc;
  border: 1px solid #00ffcc;
  border-radius: 6px;
  transition: background-color 0.3s, color 0.3s;
}

nav ul li a:hover {
  background-color: #00ffcc;
  color: #002811;
}

/* Image gallery */
.image-gallery {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
  margin: 30px 10px;
}

.image-gallery img {
  width: 100%;
  max-width: 300px;
  height: auto;
  border-radius: 10px;
  border: 2px solid #00ffcc;
}

/* Mobile optimization: reduce spacing between nav items */
@media (max-width: 768px) {
  nav ul {
    padding: 0;
    margin: 0;
  }

  nav ul li {
    margin: 4px 0; /* reduce vertical space */
    padding: 8px 10px; /* tighter padding */
  }

  nav ul li a {
    font-size: 16px; /* make text comfortably readable */
    display: block;
    padding: 10px 15px;
  }
}