/* Reset and base styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f7f9fc;
  color: #333;
  line-height: 1.6;
  font-size: 16px;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Navbar styles */
.navbar {
  background-color: #ffffff;
  border-bottom: 1px solid #e3e6ef;
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 6px rgb(0 0 0 / 0.05);
}

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

.logo {
  font-weight: 700;
  font-size: 1.8rem;
  color: #1a73e8;
  text-decoration: none;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.8rem;
}

.nav-links a {
  color: #4a4a4a;
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

.nav-links a:hover,
.nav-links a:focus {
  color: #1a73e8;
  outline: none;
}

/* Hero Section */
.hero-section {
  background: url('https://www.yourdomain.com/images/hero_bg.jpg') center center/cover no-repeat;
  padding: 4rem 2rem;
  text-align: center;
  color: #ffffff;
  text-shadow: 0 1px 3px rgba(0,0,0,0.5);
  margin-bottom: 2rem;
}

.hero-section h1 {
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: #2882f7;
}

.hero-section p {
  font-size: 1.3rem;
  font-weight: 400;
  color: #073b80;
}

/* Main Content */
.content img {
  width: 100%;
  max-height: 350px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 1rem;
}

.content p {
  margin-bottom: 1.2rem;
  text-align: justify;
}

.content h2 {
  margin-top: 2rem;
  margin-bottom: 1rem;
  color: #1a73e8;
  font-weight: 700;
  border-left: 4px solid #1a73e8;
  padding-left: 10px;
}

.content ul {
  margin-left: 20px;
  margin-bottom: 2rem;
  list-style-type: disc;
  color: #555;
}

.content ul li {
  margin-bottom: 0.6rem;
}

/* Button */
.btn-container {
  text-align: center;
  margin: 3rem 0;
}

.btn-buy {
  background-color: #1a73e8;
  color: #fff;
  padding: 1rem 2.5rem;
  border: none;
  border-radius: 30px;
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: background-color 0.3s ease;
}

.btn-buy:hover,
.btn-buy:focus {
  background-color: #155ab6;
  outline: none;
}

/* Footer */
footer {
  background-color: #1a73e8;
  color: #fff;
  padding: 1.5rem 0;
  text-align: center;
  font-size: 0.9rem;
  box-shadow: 0 -3px 8px rgb(0 0 0 / 0.15);
}

/* Responsive */
@media (max-width: 768px) {
  .navbar .container {
    flex-direction: column;
    gap: 1rem;
  }
  .nav-links {
    flex-direction: column;
    gap: 1rem;
  }
  .hero-section h1 {
    font-size: 2rem;
  }
  .hero-section p {
    font-size: 1rem;
  }
}