* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
  background-color: #f9f9f9;
  color: #333;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #2c3e50;
  padding: 1rem 2rem;
  position: relative;
}
.navbar .logo {
  color: #fff;
  font-size: 1.2rem;
  font-weight: bold;
}
.navbar .nav-links {
  list-style: none;
  display: flex;
  gap: 1rem;
}
.navbar .nav-links a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
}
.navbar .nav-links a:hover {
  text-decoration: underline;
}
.hamburger {
  display: none;
  font-size: 1.5rem;
  color: #050505ff;
  cursor: pointer;
}

.hero {
  background: linear-gradient(rgba(44, 62, 80, 0.8), rgba(44, 62, 80, 0.8)),
    url("assets/bg-study.jpg") center/cover no-repeat;
  color: #fff;
  text-align: center;
  padding: 5rem 2rem;
}
.hero-content h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}
.hero-content p {
  max-width: 600px;
  margin: 0 auto 2rem;
  font-size: 1.1rem;
}
.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.btn {
  background: #e67e22;
  color: #fff;
  padding: 0.8rem 1.5rem;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
}
.btn:hover {
  background: #d35400;
}
.btn.secondary {
  background: #3498db;
}
.btn.secondary:hover {
  background: #2980b9;
}

.features {
  padding: 3rem 2rem;
  text-align: center;
}
.features h2 {
  margin-bottom: 2rem;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}
.feature {
  background: #fff;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}
.feature h3 {
  margin-bottom: 0.5rem;
}

footer {
  text-align: center;
  padding: 1rem;
  background: #2c3e50;
  color: #fff;
  margin-top: 2rem;
}

@media (max-width: 768px) {
  .navbar .nav-links {
    display: none;
    position: absolute;
    top: 60px;
    right: 0;
    background: #2c3e50;
    flex-direction: column;
    width: 200px;
    padding: 1rem;
    border-radius: 0 0 0 8px;
    z-index: 1000;
  }

  .navbar .nav-links.active {
    display: flex;
  }

  .navbar .nav-links li {
    margin: 0.5rem 0;
  }

  .hamburger {
    display: block;
  }
}