* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background-color: #e8f4f8;
  color: #333;
}

header {
  position: relative;
  height: 100vh;
  overflow: hidden;
}

header video {
  position: absolute;
  top: 0;
  left: 0;
  min-width: 100%;
  min-height: 100%;
  object-fit: cover;
  z-index: -1;
}

.overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 40, 80, 0.4);
}

.header-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100%;
  color: #fff;
  text-align: center;
}

.header-content h1 {
  font-size: 3.5em;
  text-shadow: 2px 2px 8px #000;
}

.header-content p {
  font-size: 1.2em;
  margin-top: 10px;
}

nav {
  background-color: #045c6d;
  padding: 10px 20px;
  position: sticky;
  top: 0;
  z-index: 3;
}

nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
}

nav ul li {
  margin: 0 15px;
}

nav ul li a {
  color: #fff;
  text-decoration: none;
  font-weight: bold;
  transition: color 0.3s;
}

nav ul li a:hover {
  color: #cceeff;
}

section {
  padding: 40px 20px;
  max-width: 900px;
  margin: auto;
}

section h2 {
  color: #045c6d;
  margin-bottom: 20px;
  text-align: center;
}

footer {
  text-align: center;
  padding: 20px;
  background: #023e4e;
  color: #fff;
}
.gallery {
  padding: 40px 20px;
  background-color: #dff6ff;
}

.gallery h2 {
  text-align: center;
  color: #045c6d;
  margin-bottom: 30px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 15px;
  max-width: 1100px;
  margin: 0 auto;
}

.gallery-grid img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease;
}

.gallery-grid img:hover {
  transform: scale(1.05);
}

.video-submenu {
  background-color: #ffffff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  padding: 15px 20px;
  text-align: center;
  z-index: 2;
  position: relative;
}

.submenu-nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 15px;
}

.submenu-nav a {
  background-color: #045c6d;
  color: #ffffff;
  padding: 10px 18px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

.submenu-nav a:hover {
  background-color: #057b91;
  transform: translateY(-2px);
}

@media (max-width: 600px) {
  .submenu-nav a {
    font-size: 0.9em;
    padding: 8px 14px;
  }
}