/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f8f9fa;
}

/* Color Variables */
:root {
  --primary-color: #2563eb;
  --secondary-color: #10b981;
  --accent-color: #f59e0b;
  --text-dark: #1f2937;
  --text-light: #6b7280;
  --border-color: #e5e7eb;
  --white: #ffffff;
  --light-bg: #f8f9fa;
  --success: #059669;
  --warning: #d97706;
}

/* Header Styles */
.header {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
  padding: 1rem 0;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--white);
  transition: transform 0.3s ease;
}

.logo:hover {
  transform: scale(1.05);
}

.nav {
  display: flex;
  gap: 2rem;
}

.nav a {
  color: var(--white);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 25px;
  transition: all 0.3s ease;
}

.nav a:hover {
  background-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.nav a.active {
  background-color: var(--accent-color);
}

/* Mobile Menu */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Main Layout */
.main-content {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 3rem;
  margin: 3rem auto;
  max-width: 1200px;
  padding: 0 2rem;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: var(--white);
  padding: 4rem 0;
  text-align: center;
  margin-bottom: 3rem;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-button {
  display: inline-block;
  background-color: var(--accent-color);
  color: var(--white);
  padding: 1rem 2rem;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

.cta-button:hover {
  background-color: var(--warning);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4);
}

/* Content Sections */
.content-section {
  background: var(--white);
  border-radius: 10px;
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.content-section:hover {
  transform: translateY(-5px);
}

.content-section h2 {
  color: var(--text-dark);
  margin-bottom: 1rem;
  font-size: 1.8rem;
  border-bottom: 2px solid var(--primary-color);
  padding-bottom: 0.5rem;
}

.content-section p {
  margin-bottom: 1rem;
  color: var(--text-light);
}

/* Articles Grid */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.article-card {
  background: var(--white);
  border-radius: 10px;
  padding: 2rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  border-left: 4px solid var(--primary-color);
}

.article-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.article-card h3 {
  color: var(--text-dark);
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

.article-card p {
  color: var(--text-light);
  margin-bottom: 1.5rem;
}

.read-more {
  display: inline-block;
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border: 2px solid var(--primary-color);
  border-radius: 25px;
  transition: all 0.3s ease;
}

.read-more:hover {
  background-color: var(--primary-color);
  color: var(--white);
  transform: translateX(5px);
}

/* Sidebar */
.sidebar {
  space-y: 2rem;
}

.sidebar-widget {
  background: var(--white);
  border-radius: 10px;
  padding: 1.5rem;
  margin-bottom: 2rem;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.sidebar-widget h3 {
  color: var(--text-dark);
  margin-bottom: 1rem;
  font-size: 1.2rem;
  border-bottom: 2px solid var(--secondary-color);
  padding-bottom: 0.5rem;
}

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

.sidebar-widget li {
  margin-bottom: 0.5rem;
  padding: 0.5rem;
  border-radius: 5px;
  transition: background-color 0.3s ease;
}

.sidebar-widget li:hover {
  background-color: var(--light-bg);
}

.sidebar-widget a {
  color: var(--text-light);
  text-decoration: none;
  transition: color 0.3s ease;
}

.sidebar-widget a:hover {
  color: var(--primary-color);
}

.promo-box {
  background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
  color: var(--white);
  padding: 1.5rem;
  border-radius: 10px;
  text-align: center;
  margin-top: 1rem;
}

.promo-box p {
  margin-bottom: 1rem;
}

.promo-button {
  display: inline-block;
  background-color: var(--white);
  color: var(--primary-color);
  padding: 0.7rem 1.5rem;
  text-decoration: none;
  border-radius: 25px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.promo-button:hover {
  background-color: var(--accent-color);
  color: var(--white);
  transform: translateY(-2px);
}

/* Article Page Styles */
.article-header {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--white);
  padding: 3rem 0;
  margin-bottom: 2rem;
}

.article-meta {
  display: flex;
  gap: 2rem;
  margin: 1rem 0;
  font-size: 0.9rem;
  opacity: 0.9;
}

.article-content {
  background: var(--white);
  border-radius: 10px;
  padding: 3rem;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  margin-bottom: 2rem;
}

.article-content h2 {
  color: var(--text-dark);
  margin: 2rem 0 1rem;
  font-size: 1.5rem;
  border-left: 4px solid var(--primary-color);
  padding-left: 1rem;
}

.article-content h3 {
  color: var(--text-dark);
  margin: 1.5rem 0 0.5rem;
  font-size: 1.2rem;
}

.article-content ul, .article-content ol {
  margin: 1rem 0;
  padding-left: 2rem;
}

.article-content li {
  margin-bottom: 0.5rem;
  color: var(--text-light);
}

.highlight-box {
  background: linear-gradient(135deg, #e0f2fe, #f0f9ff);
  border-left: 4px solid var(--secondary-color);
  padding: 1.5rem;
  border-radius: 5px;
  margin: 2rem 0;
}

.cta-section {
  background: linear-gradient(135deg, var(--accent-color), var(--warning));
  color: var(--white);
  padding: 2rem;
  border-radius: 10px;
  text-align: center;
  margin: 2rem 0;
}

/* Footer */
.footer {
  background: var(--text-dark);
  color: var(--white);
  padding: 3rem 0 1rem;
  margin-top: 4rem;
}

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

.footer-section h3 {
  margin-bottom: 1rem;
  color: var(--accent-color);
}

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

.footer-section li {
  margin-bottom: 0.5rem;
}

.footer-section a {
  color: #9ca3af;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-section a:hover {
  color: var(--white);
}

.footer-bottom {
  border-top: 1px solid #374151;
  padding-top: 2rem;
  text-align: center;
  color: #9ca3af;
}

/* Contact Form */
.contact-form {
  background: var(--white);
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid var(--border-color);
  border-radius: 5px;
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

.submit-btn {
  background-color: var(--primary-color);
  color: var(--white);
  padding: 1rem 2rem;
  border: none;
  border-radius: 5px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

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

/* Responsive Design */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    gap: 1rem;
  }
  
  .nav {
    display: none;
    flex-direction: column;
    width: 100%;
    background-color: rgba(0,0,0,0.1);
    padding: 1rem;
    border-radius: 10px;
  }
  
  .nav.mobile-open {
    display: flex;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .main-content {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 0 1rem;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .articles-grid {
    grid-template-columns: 1fr;
  }
  
  .article-content {
    padding: 1.5rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }
  
  .hero {
    padding: 2rem 0;
  }
  
  .content-section {
    padding: 1.5rem;
  }
  
  .article-card {
    padding: 1.5rem;
  }
}