/* CSS Variables */
:root {
  --primary: #1e3a5f;
  --secondary: #4a90e2;
  --light: #e8f4fd;
  --accent: #c0c0c0;
  --white: #ffffff;
  --shadow: rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Open Sans', sans-serif;
  line-height: 1.6;
  color: var(--primary);
  background-color: var(--white);
}

h1, h2, h3 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
}

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

img {
  max-width: 100%;
  height: auto;
}

/* Navigation */
header {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: var(--white);
  box-shadow: 0 2px 10px var(--shadow);
  z-index: 1000;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  color: var(--primary);
}

.hamburger {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background-color: var(--primary);
  margin: 3px 0;
  transition: var(--transition);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}

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

.nav-links a:hover {
  color: var(--secondary);
}

/* Hero Section */
.hero {
  padding-top: 80px; /* Account for fixed nav */
  background: linear-gradient(135deg, var(--light) 0%, var(--white) 100%);
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  text-align: center;
}

.hero-image {
  width: 100%;
  max-width: 400px;
  border-radius: 10px;
  box-shadow: 0 10px 30px var(--shadow);
}

/* About Section */
.about {
  padding: 4rem 2rem;
  background-color: var(--white);
}

.container {
  max-width: 800px;
  margin: 0 auto;
}

.about h2 {
  text-align: center;
  margin-bottom: 2rem;
  color: var(--primary);
  font-size: 2.5rem;
}

.about p {
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

.highlight {
  background-color: var(--light);
  padding: 1.5rem;
  border-radius: 8px;
  border-left: 4px solid var(--secondary);
  font-weight: 600;
}

.about h3 {
  margin-top: 2rem;
  color: var(--primary);
  font-size: 1.8rem;
}

.about h4 {
  font-size: 1.4rem;
  color: var(--primary);
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.about ul {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.about li {
  margin-bottom: 0.5rem;
}

.contact {
  text-align: center;
  margin-top: 2rem;
  font-weight: 600;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 25px;
  font-weight: 600;
  text-align: center;
  transition: var(--transition);
  margin: 1rem 0.5rem;
}

.btn.primary {
  background-color: var(--secondary);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(74, 144, 226, 0.3);
}

.btn.primary:hover {
  background-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(74, 144, 226, 0.4);
}

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

.btn.secondary:hover {
  background-color: var(--secondary);
  transform: translateY(-2px);
}

.btn.outline {
  border: 2px solid var(--secondary);
  color: var(--secondary);
  background-color: transparent;
}

.btn.outline:hover {
  background-color: var(--secondary);
  color: var(--white);
}

/* Footer */
footer {
  background-color: var(--primary);
  color: var(--white);
  padding: 2rem 0;
  text-align: center;
}

/* Snow Animation */
.snowflakes {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 999;
}

.snowflake {
  position: absolute;
  color: var(--accent);
  font-size: 1.5rem;
  animation: fall linear infinite;
}

.snowflake:nth-child(1) { left: 10%; animation-duration: 10s; animation-delay: 0s; }
.snowflake:nth-child(2) { left: 20%; animation-duration: 12s; animation-delay: 1s; }
.snowflake:nth-child(3) { left: 30%; animation-duration: 8s; animation-delay: 7s; }
.snowflake:nth-child(4) { left: 40%; animation-duration: 14s; animation-delay: 3s; }
.snowflake:nth-child(5) { left: 50%; animation-duration: 11s; animation-delay: 9s; }
.snowflake:nth-child(6) { left: 60%; animation-duration: 9s; animation-delay: 5s; }
.snowflake:nth-child(7) { left: 70%; animation-duration: 13s; animation-delay: 2s; }
.snowflake:nth-child(8) { left: 80%; animation-duration: 10s; animation-delay: 7s; }
.snowflake:nth-child(9) { left: 90%; animation-duration: 12s; animation-delay: 8s; }
.snowflake:nth-child(10) { left: 95%; animation-duration: 15s; animation-delay: 4s; }

@keyframes fall {
  0% { top: -10%; opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { top: 110%; opacity: 0; }
}

/* Responsive Design */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--white);
    flex-direction: column;
    gap: 0;
    padding: 0;
    margin: 0;
    box-shadow: 0 4px 10px var(--shadow);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-links li {
    border-bottom: 1px solid var(--light);
  }

  .nav-links a {
    display: block;
    padding: 1rem 2rem;
  }

  .nav-container {
    padding: 1rem;
  }

  .hero-content {
    padding: 1rem;
  }

  .about {
    padding: 2rem 1rem;
  }

  .about h2 {
    font-size: 2rem;
  }

  .btn {
    display: block;
    margin: 1rem 0;
  }
}