:root {
  --primary-color: #71FFB2;
  --primary-dark: #37DE6A;
  --secondary-color: #007FD3;
  --light-bg: #f8fffe;
  --light-green: #f0f9f8;
}

:root {
  --expandeo-primary: #00d4aa;
  --expandeo-secondary: #00b8d4;
  --expandeo-dark: #2c3e50;
  --expandeo-light: #f8f9fa;
}

/* Filter Section */
.filter-section {
  background: white;
  border-bottom: 1px solid #e9ecef;
}

.filter-tabs .btn {
  border: 2px solid #e9ecef;
  border-radius: 25px;
  color: #666;
  font-weight: 500;
  margin: 0.25rem;
  transition: all 0.3s ease;
}

.filter-tabs .btn:hover,
.filter-tabs .btn.active {
  border-color: var(--expandeo-primary);
  color: var(--expandeo-primary);
  background: rgba(0, 212, 170, 0.05);
}

.search-container {
  position: relative;
}

.search-input {
  border: 2px solid #e9ecef;
  border-radius: 25px;
  padding-left: 3rem;
  transition: border-color 0.3s ease;
}

.search-input:focus {
  border-color: var(--expandeo-primary);
  box-shadow: 0 0 0 0.2rem rgba(0, 212, 170, 0.25);
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: #999;
  z-index: 5;
}

/* Blog Cards */
.blog-card {
  background: white;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
  text-decoration: none;
  color: inherit;
  border: none;
}

.blog-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
  text-decoration: none;
  color: inherit;
}

.blog-image {
  background: linear-gradient(135deg, var(--expandeo-primary), var(--expandeo-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}

.blog-image::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="10" r="1" fill="white" opacity="0.1"/><circle cx="10" cy="60" r="1" fill="white" opacity="0.1"/><circle cx="90" cy="40" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
}

.blog-meta {
  color: #666;
  font-size: 0.875rem;
}

.blog-category {
  background: linear-gradient(135deg, var(--expandeo-primary), var(--expandeo-secondary));
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 15px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.blog-title {
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.3;
  color: #333;
}

.blog-excerpt {
  color: #666;
  line-height: 1.6;
}

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--expandeo-primary), var(--expandeo-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 0.875rem;
}

.author-name {
  font-weight: 600;
  color: #333;
  font-size: 0.875rem;
  margin-bottom: 0;
}

.author-title {
  color: #666;
  font-size: 0.75rem;
  margin-bottom: 0;
}

/* Featured Article */
.featured-article {
  background: white;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  text-decoration: none;
  color: inherit;
}

.featured-article:hover {
  text-decoration: none;
  color: inherit;
}

.featured-image {
  background: linear-gradient(135deg, var(--expandeo-primary), var(--expandeo-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 4rem;
  position: relative;
}

.featured-badge {
  background: #ff6b6b;
  color: white;
  padding: 0.375rem 0.75rem;
  border-radius: 15px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  display: inline-block;
}

.featured-title {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.2;
}

.featured-excerpt {
  display: none;
  color: #666;
  font-size: 1rem;
  line-height: 1.6;
}

.btn-read-more {
  background: linear-gradient(135deg, var(--expandeo-primary), var(--expandeo-secondary));
  border: none;
  border-radius: 25px;
  font-weight: 600;
  padding: 12px 24px;
  transition: transform 0.3s ease;
  text-decoration: none;
}

.btn-read-more:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, var(--expandeo-primary), var(--expandeo-secondary));
}

/* Pagination */
.pagination .page-link {
  border: 2px solid #e9ecef;
  color: #666;
  font-weight: 500;
  margin: 0 0.125rem;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.pagination .page-link:hover,
.pagination .page-item.active .page-link {
  border-color: var(--expandeo-primary);
  color: var(--expandeo-primary);
  background: rgba(0, 212, 170, 0.05);
}

/* Related Articles */
.related-articles {
  background-color: aliceblue;
}