/* Global Styles */
:root {
  --primary-color: #0a192f;
  --secondary-color: #1e3a8a;
  --accent-color: #3b82f6;
  --text-color: #e2e8f0;
  --light-text: #f8fafc;
  --dark-text: #1e293b;
  --background-color: #ffffff;
  --section-bg: #f1f5f9;
  --footer-bg: #0f172a;
  --card-bg: #ffffff;
  --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Inter', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: var(--dark-text);
  background-color: var(--background-color);
}

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

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  background-color: var(--accent-color);
  color: var(--light-text);
  border-radius: var(--border-radius);
  font-weight: 600;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

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

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

.btn-outline:hover {
  background-color: var(--accent-color);
  color: var(--light-text);
}

/* Header Styles */
header {
  background-color: var(--primary-color);
  color: var(--light-text);
  padding: 20px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--light-text);
}

.logo a {
  color: var(--light-text);
}

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

nav ul li {
  margin-left: 30px;
}

nav ul li a {
  color: var(--light-text);
  font-weight: 500;
  position: relative;
}

nav ul li a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-color);
  transition: var(--transition);
}

nav ul li a:hover::after {
  width: 100%;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--light-text);
  font-size: 24px;
  cursor: pointer;
}

/* Hero Section */
.hero {
  background-color: var(--primary-color);
  color: var(--light-text);
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: 600px;
  position: relative;
  z-index: 2;
}

.hero h1 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}

.hero p {
  font-size: 18px;
  margin-bottom: 30px;
  opacity: 0.9;
}

.hero-image {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 50%;
  z-index: 1;
}

/* Featured Articles Section */
.featured-articles {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 50px;
  font-size: 36px;
  font-weight: 700;
  color: var(--primary-color);
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 30px;
}

.article-card {
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
}

.article-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.article-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.article-content {
  padding: 20px;
}

.article-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.article-excerpt {
  margin-bottom: 15px;
  color: var(--dark-text);
}

.article-meta {
  font-size: 14px;
  color: #64748b;
}

/* Use Cases Section */
.use-cases {
  background-color: var(--section-bg);
  padding: 80px 0;
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 30px;
}

.use-case-card {
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 30px;
  text-align: center;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
}

.use-case-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.use-case-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--section-bg);
  border-radius: 50%;
}

.use-case-icon img {
  width: 40px;
  height: 40px;
}

.use-case-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.use-case-description {
  font-size: 14px;
  color: var(--dark-text);
}

/* Latest Insights Section */
.latest-insights {
  padding: 80px 0;
}

.insights-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 30px;
}

.main-insights {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.insight-card {
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 30px;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
}

.insight-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.insight-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.insight-meta {
  font-size: 14px;
  color: #64748b;
  margin-bottom: 15px;
}

.insight-excerpt {
  margin-bottom: 20px;
}

.sidebar-insights {
  background-color: var(--section-bg);
  border-radius: var(--border-radius);
  padding: 30px;
}

.sidebar-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.sidebar-insight-item {
  padding: 15px 0;
  border-bottom: 1px solid #e2e8f0;
}

.sidebar-insight-item:last-child {
  border-bottom: none;
}

.sidebar-insight-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 5px;
  color: var(--primary-color);
}

.sidebar-insight-meta {
  font-size: 14px;
  color: #64748b;
}

/* Footer */
footer {
  background-color: var(--footer-bg);
  color: var(--light-text);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-column h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--light-text);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: #94a3b8;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--light-text);
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid #1e293b;
  color: #94a3b8;
  font-size: 14px;
}

.social-links {
  display: flex;
  gap: 15px;
  margin-top: 20px;
}

.social-links a {
  color: #94a3b8;
  font-size: 20px;
  transition: var(--transition);
}

.social-links a:hover {
  color: var(--light-text);
}

/* Responsive Styles */
@media (max-width: 992px) {
  .hero h1 {
    font-size: 40px;
  }
  
  .hero-image {
    width: 45%;
  }
  
  .insights-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .mobile-menu-btn {
    display: block;
  }
  
  nav ul {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background-color: var(--primary-color);
    flex-direction: column;
    padding: 20px;
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
  }
  
  nav ul.show {
    display: flex;
  }
  
  nav ul li {
    margin: 15px 0;
  }
  
  .hero {
    padding: 80px 0;
  }
  
  .hero h1 {
    font-size: 36px;
  }
  
  .hero-content {
    max-width: 100%;
    text-align: center;
  }
  
  .hero-image {
    display: none;
  }
  
  .section-title {
    font-size: 30px;
  }
}

@media (max-width: 576px) {
  .hero h1 {
    font-size: 30px;
  }
  
  .articles-grid,
  .use-cases-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}