:root {
  --primary-color: #0066cc;
  --secondary-color: #004d99;
  --text-color: #333;
  --light-gray: #f5f5f5;
  --dark-gray: #666;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
}

/* Header and Navigation */
header {
  background: white;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  padding: 1rem 5%;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary-color);
  background: linear-gradient(
    45deg,
    var(--primary-color),
    var(--secondary-color)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

nav a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  transition: color 0.3s;
}

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

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
}

.mobile-menu-btn span {
  width: 30px;
  height: 3px;
  background: var(--text-color);
  transition: 0.3s;
}

/* Main Content */
main {
  margin-top: 80px;
}

.hero {
  background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)),
    url("https://plus.unsplash.com/premium_photo-1661813583584-bbb3ac4ade09?q=80&w=3540&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D");
  background-size: cover;
  background-position: center;
  color: white;
  text-align: center;
  padding: 8rem 2rem;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.cta-button {
  display: inline-block;
  background: var(--primary-color);
  color: white;
  padding: 1rem 2rem;
  border-radius: 5px;
  text-decoration: none;
  margin-top: 2rem;
  transition: background-color 0.3s;
}

.cta-button:hover {
  background: var(--secondary-color);
}

/* Features Section */
.features {
  padding: 4rem 5%;
  background: var(--light-gray);
}

.features h2 {
  text-align: center;
  margin-bottom: 3rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: white;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  text-align: center;
}

.feature-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 5px;
  margin-bottom: 1rem;
}

/* Footer */
footer {
  background: #333;
  color: white;
  padding: 3rem 5% 1rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h4 {
  margin-bottom: 1rem;
}

.footer-section ul {
  list-style: none;
}

.footer-section a {
  color: white;
  text-decoration: none;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .mobile-menu-btn {
    display: flex;
  }

  nav {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background: white;
    padding: 1rem;
    transform: translateY(-150%);
    transition: transform 0.3s;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  }

  nav.active {
    transform: translateY(0);
  }

  nav ul {
    flex-direction: column;
    gap: 1rem;
  }

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

  .feature-grid {
    grid-template-columns: 1fr;
  }
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.hero,
.feature-card {
  animation: fadeIn 1s ease-in;
}