:root {
  --primary-color: #003366;
  /* Deep Blue */
  --accent-color: #00AEEF;
  /* Sky Blue */
  --text-color: #333333;
  --bg-color: #ffffff;
  --light-gray: #f4f4f4;
  --white: #ffffff;
  --font-main: 'Inter', sans-serif;
  --transition: all 0.3s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-main);
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--bg-color);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul {
  list-style: none;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}

/* Header */
header {
  background-color: var(--white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-color);
  letter-spacing: 1px;
}

.nav-links {
  display: flex;
  gap: 30px;
  z-index: 1000;
}

.nav-links a {
  font-weight: 600;
  color: var(--primary-color);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent-color);
}

.mobile-menu-btn {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
  background: none;
  border: none;
}

/* Hero Section */
.hero {
  position: relative;
  height: 80vh;
  /* Make it taller to show off video */
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  color: var(--white);
  text-align: center;
  /* Fallback background */
  background: linear-gradient(135deg, var(--primary-color) 0%, #001f3f 100%);
}

.hero-video {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  z-index: 1;
  transform: translate(-50%, -50%);
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  /* Dark overlay for text readability */
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
}

.hero h1 {
  color: var(--white);
  font-size: 3.5rem;
  margin-bottom: 20px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
  font-size: 1.3rem;
  margin-bottom: 30px;
  opacity: 1;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.btn {
  display: inline-block;
  padding: 12px 30px;
  border-radius: 5px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
}

.btn-primary {
  background-color: var(--accent-color);
  color: var(--white);
}

.btn-primary:hover {
  background-color: #008cbf;
  transform: translateY(-2px);
}

/* Section Common */
.section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 50px;
  font-size: 2.5rem;
}

/* Features/Highlights */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.card {
  background: var(--white);
  border-radius: 8px;
  padding: 30px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  transition: var(--transition);
  text-align: center;
  border-top: 4px solid var(--accent-color);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.card h3 {
  margin-bottom: 15px;
}

/* Footer */
footer {
  background-color: var(--primary-color);
  color: var(--white);
  padding: 60px 0 20px;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: var(--accent-color);
  margin-bottom: 20px;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a:hover {
  color: var(--accent-color);
  padding-left: 5px;
}

.copyright {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.9rem;
  opacity: 0.7;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    background-color: var(--white);
    display: flex; /* Reinforce flex */
    flex-direction: column;
    text-align: center;
    padding: 40px 0;
    transition: var(--transition);
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    z-index: 2000; /* Increased z-index */
  }

  .nav-links.active {
    left: 0;
  }

  .mobile-menu-btn {
    display: block;
  }

  .hero h1 {
    font-size: 2rem;
  }
}

/* Video Section */
.video-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  height: 0;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  background-color: #000;
}

.video-container iframe,
.video-container video,
.video-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7);
  font-size: 1.5rem;
  background: #333;
}