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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  background-color: #f9f9f9;
}

header {
  background-color: #333;
  color: white;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4rem 4rem;
}

.logo {
  font-size: 1.5rem;
}

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

.nav-links li a {
  color: white;
  text-decoration: none;
  transition: 0.3s;
}

.nav-links li a:hover {
  color: #ffd700;
}

.hero {
  background: url('https://source.unsplash.com/1600x600/?technology') no-repeat center center/cover;
  height: 60vh;
  position: relative;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero-overlay {
  background-color: rgba(0, 0, 0, 0.6);
  padding: 2rem;
  border-radius: 10px;
}

.content-container {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2rem;
  padding: 2rem;
}

.info-box {
  background-color: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.sidebar {
  background-color: #fff;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.sidebar h3 {
  margin-bottom: 1rem;
}

.sidebar ul {
  list-style-type: none;
}

.sidebar ul li {
  margin-bottom: 0.5rem;
}

.sidebar ul li a {
  text-decoration: none;
  color: #333;
}

.sidebar ul li a:hover {
  color: #007bff;
}

footer {
  background-color: #222;
  color: white;
  text-align: center;
  padding: 1rem;
  margin-top: 2rem;
}

.slider {
  position: relative;
  max-width: 50%;
  height: 300px;
  overflow: hidden;
  margin: 2rem auto;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.slide {
  position: absolute;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.slide:target {
  opacity: 1;
}

.slide:first-child {
  opacity: 1;
}

.slider-nav {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
}

.slider-nav a {
  display: block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.5);
  transition: background-color 0.3s ease;
}

.slider-nav a:hover,
.slider-nav a.active {
  background-color: rgba(255, 255, 255, 0.9);
}

@media (max-width: 1024px) {
  .content-container {
    padding: 1.5rem;
    gap: 1.5rem;
  }
  
  .navbar {
    padding: 1rem 1.5rem;
  }
  
  .hero-overlay {
    padding: 1.5rem;
  }
}

/* Tablets (768px and below) */
@media (max-width: 768px) {
  .content-container {
    grid-template-columns: 1fr;
    padding: 1rem;
  }

  .nav-links {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .navbar {
    flex-direction: column;
    align-items: center;
    padding: 1rem;
  }

  .hero {
    height: 40vh;
    background-size: cover;
  }

  .hero-overlay {
    padding: 1.5rem;
  }

  .hero-overlay h2 {
    font-size: 1.5rem;
  }
  
  .info-box {
    padding: 1.5rem;
  }
  
  .sidebar {
    padding: 1rem;
  }
  
  .slider {
    height: 300px;
    margin: 1.5rem auto;
  }
}

/* Mobile phones (480px and below) */
@media (max-width: 480px) {
  .navbar {
    padding: 0.5rem;
  }
  
  .logo {
    font-size: 1.2rem;
  }
  
  .nav-links {
    gap: 0.5rem;
  }
  
  .nav-links li a {
    font-size: 0.9rem;
    padding: 0.5rem;
  }
  
  .hero {
    height: 35vh;
  }
  
  .hero-overlay {
    padding: 1rem;
  }
  
  .hero-overlay h2 {
    font-size: 1.2rem;
  }
  
  .hero-overlay p {
    font-size: 0.9rem;
  }
  
  .content-container {
    padding: 0.5rem;
    gap: 1rem;
  }
  
  .info-box {
    padding: 1rem;
  }
  
  .sidebar {
    padding: 1rem;
  }
  
  .slider {
    height: 250px;
    margin: 1rem auto;
  }
  
  footer {
    padding: 0.5rem;
    font-size: 0.9rem;
  }
}

/* Very small screens (320px and below) */
@media (max-width: 320px) {
  .hero-overlay h2 {
    font-size: 1rem;
  }
  
  .hero-overlay p {
    font-size: 0.8rem;
  }
  
  .info-box h2 {
    font-size: 1.2rem;
  }
  
  .sidebar h3 {
    font-size: 1rem;
  }
  
  .slider {
    height: 200px;
    margin: 0.5rem auto;
  }
}