:root {
  --primary: #2563eb;
  --primary-light: #3b82f6;
  --primary-dark: #1d4ed8;
  --secondary: #7c3aed;
  --accent: #ec4899;
  --light: #f8fafc;
  --dark: #0f172a;
  --gray: #64748b;
  --light-gray: #e2e8f0;
  --border-radius: 12px;
  --border-radius-lg: 16px;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-card: 0 4px 6px rgba(0, 0, 0, 0.04);
  --transition: all 0.3s ease;
}

* {
  box-sizing: border-box;
}

body { 
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif; 
  margin: 0;
  padding: 0;
  background-color: #f9fafb;
  color: var(--dark); 
  line-height: 1.6;
  font-weight: 400;
}

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

/* Header */
header {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-family: 'Playfair Display', serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}

.logo:hover {
  color: var(--primary-dark);
}

/* Hero section */
.hero {
  text-align: center;
  padding: 60px 0 40px;
  max-width: 800px;
  margin: 0 auto;
}

h1 {
  font-family: 'Playfair Display', serif;
  font-size: 3rem;
  font-weight: 700;
  margin: 0 0 16px;
  color: var(--dark);
  line-height: 1.2;
}

.subtitle {
  font-size: 1.2rem;
  color: var(--gray);
  margin: 0;
  font-weight: 400;
}

/* Search */
.search-box {
  position: relative;
  max-width: 500px;
  margin: 0 auto 50px;
}

.search-box svg {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray);
  z-index: 2;
}

.search-box input {
  width: 100%;
  padding: 14px 20px 14px 48px;
  border: 1px solid var(--light-gray);
  border-radius: var(--border-radius);
  font-size: 1rem;
  background: white;
  box-shadow: var(--shadow);
  transition: var(--transition);
  position: relative;
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 24px;
  margin-bottom: 60px;
}

/* Cards */
/* Card Fancy Background */
/* Card styles with abstract shapes */
.card {
  position: relative;
  padding: 1.5rem;
  border-radius: var(--border-radius-lg);
  color: var(--dark);
  overflow: hidden;
  background: white;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  isolation: isolate;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.12;
  transition: var(--transition);
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
}

/* Dynamic shape generation based on data attributes */
.card[data-shape="1"]::before {
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
}

.card[data-shape="2"]::before {
  clip-path: polygon(30% 0%, 70% 0%, 100% 30%, 100% 70%, 70% 100%, 30% 100%, 0% 70%, 0% 30%);
  background: linear-gradient(135deg, var(--accent) 0%, var(--secondary) 100%);
}

.card[data-shape="3"]::before {
  clip-path: circle(70% at 90% 20%);
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--accent) 100%);
}

.card[data-shape="4"]::before {
  clip-path: polygon(50% 0%, 100% 38%, 82% 100%, 18% 100%, 0% 38%);
  background: linear-gradient(135deg, #10b981 0%, #3b82f6 100%);
}

.card[data-shape="5"]::before {
  clip-path: polygon(0 20%, 60% 20%, 60% 0%, 100% 50%, 60% 100%, 60% 80%, 0 80%);
  background: linear-gradient(135deg, #f59e0b 0%, #ec4899 100%);
}

.card[data-shape="6"]::before {
  clip-path: polygon(0% 15%, 15% 15%, 15% 0%, 85% 0%, 85% 15%, 100% 15%, 100% 85%, 85% 85%, 85% 100%, 15% 100%, 15% 85%, 0% 85%);
  background: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
}

.card[data-shape="7"]::before {
  clip-path: path("M0,0 L100,0 L100,80 C80,100 50,100 30,80 L0,80 Z");
  background: linear-gradient(135deg, #3b82f6 0%, #1e40af 100%);
}

.card[data-shape="8"]::before {
  clip-path: ellipse(75% 60% at 50% 40%);
  background: linear-gradient(135deg, #10b981 0%, #047857 100%);
}

.card[data-shape="9"]::before {
  clip-path: polygon(0% 0%, 75% 0%, 100% 50%, 75% 100%, 0% 100%);
  background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
}

.card[data-shape="10"]::before {
  clip-path: polygon(50% 0%, 90% 20%, 100% 60%, 75% 100%, 25% 100%, 0% 60%, 10% 20%);
  background: linear-gradient(135deg, #6366f1 0%, #3730a3 100%);
}

/* Hover effects */
.card:hover::before {
  opacity: 0.2;
  transform: scale(1.05);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

/* Ensure content stays above the background */
.card-content {
  position: relative;
  z-index: 1;
  padding: 1.5rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.85);
  border-radius: calc(var(--border-radius-lg) - 4px);
  backdrop-filter: blur(4px);
}

/* JavaScript helper class for random shapes */
.card.random-shape::before {
  /* This will be set via JavaScript */
  opacity: 0.15;
}

.card h2 {
  font-size: 1.4rem;
  font-weight: 600;
  margin: 0 0 12px;
  color: var(--dark);
  line-height: 1.3;
}

.card p {
  color: var(--gray);
  margin: 0 0 20px;
  flex-grow: 1;
  line-height: 1.5;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  margin-top: auto;
}

.card-link:hover {
  color: var(--primary-dark);
  gap: 12px;
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin: 60px 0;
}

.pagination-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 500;
  color: var(--gray);
  background: white;
  border: 1px solid var(--light-gray);
  transition: var(--transition);
}

.pagination-item:hover {
  color: var(--primary);
  border-color: var(--primary-light);
}

.pagination-item.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* Article page */
.article-container {
  background: white;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  margin: 40px 0;
}

.article-header {
  padding: 40px 40px 20px;
  border-bottom: 1px solid var(--light-gray);
}

.article-header h1 {
  font-size: 2.5rem;
  margin: 0 0 16px;
  text-align: left;
}

.article-meta {
  color: var(--gray);
  font-size: 0.9rem;
}

.article-content {
  padding: 40px;
}

.article-content h2 {
  font-size: 1.8rem;
  margin: 40px 0 20px;
  color: var(--dark);
  font-weight: 600;
}

.article-content p {
  line-height: 1.7;
  margin-bottom: 20px;
  font-size: 1.1rem;
}

.article-content blockquote {
  border-left: 4px solid var(--primary);
  padding-left: 20px;
  margin: 30px 0;
  font-style: italic;
  color: var(--gray);
}

.article-content ul, .article-content ol {
  margin-bottom: 20px;
  padding-left: 20px;
}

.article-content li {
  margin-bottom: 8px;
  line-height: 1.6;
}

.article-footer {
  padding: 20px 40px 40px;
  border-top: 1px solid var(--light-gray);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

.back-link:hover {
  color: var(--primary-dark);
  gap: 12px;
}

/* Footer */
footer {
  background: white;
  padding: 30px 0;
  margin-top: 60px;
  text-align: center;
  color: var(--gray);
  border-top: 1px solid var(--light-gray);
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
  
  h1 {
    font-size: 2.2rem;
  }
  
  .hero {
    padding: 40px 0 30px;
  }
  
  .subtitle {
    font-size: 1.1rem;
  }
  
  .grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .article-header,
  .article-content,
  .article-footer {
    padding: 24px;
  }
  
  .article-header h1 {
    font-size: 2rem;
  }
  
  .search-box {
    margin-bottom: 30px;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.8rem;
  }
  
  .article-header h1 {
    font-size: 1.6rem;
  }
  
  .article-content h2 {
    font-size: 1.4rem;
  }
  
  .card-content {
    padding: 20px;
  }
  
  .card h2 {
    font-size: 1.2rem;
  }
}