/* Green Impact Labs — Insights Blog Styles */

:root {
  --primary: #004407;
  --primary-light: #1a5d1a;
  --primary-dim: #91d885;
  --surface: #f8f9ff;
  --on-surface: #001c37;
  --on-surface-variant: #41493d;
  --outline: #717a6c;
  --outline-variant: #c0c9ba;
  --surface-container: #e5eeff;
  --accent-green: #2a6b27;
  --accent-gold: #ffba3b;
}

/* Article Layout */
.article-container {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Article Header */
.article-header {
  padding: 4rem 0 2rem;
  border-bottom: 1px solid var(--outline-variant);
  margin-bottom: 2.5rem;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.875rem;
  color: var(--on-surface-variant);
}

.article-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tag-capital { background: #dbeafe; color: #1e40af; }
.tag-solutions { background: #dcfce7; color: #166534; }
.tag-policy { background: #fee2e2; color: #991b1b; }
.tag-science { background: #f3e8ff; color: #6b21a8; }

.article-title {
  font-family: 'Manrope', system-ui, sans-serif;
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--on-surface);
  margin-bottom: 1.25rem;
}

.article-subtitle {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 1.25rem;
  font-weight: 300;
  line-height: 1.6;
  color: var(--on-surface-variant);
}

/* Article Body */
.article-body {
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--on-surface);
}

.article-body p {
  margin-bottom: 1.5rem;
}

.article-body h2 {
  font-family: 'Manrope', system-ui, sans-serif;
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--on-surface);
  margin-top: 3rem;
  margin-bottom: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--outline-variant);
}

.article-body h3 {
  font-family: 'Manrope', system-ui, sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--on-surface);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.article-body strong {
  font-weight: 600;
  color: var(--primary);
}

.article-body blockquote {
  border-left: 3px solid var(--primary-light);
  padding: 1rem 1.5rem;
  margin: 2rem 0;
  background: rgba(145, 216, 133, 0.08);
  border-radius: 0 0.5rem 0.5rem 0;
  font-style: italic;
  color: var(--on-surface-variant);
}

.article-body ul, .article-body ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.article-body li {
  margin-bottom: 0.5rem;
}

/* Data Callout */
.data-callout {
  background: linear-gradient(135deg, rgba(0, 68, 7, 0.04) 0%, rgba(26, 93, 26, 0.06) 100%);
  border: 1px solid var(--outline-variant);
  border-radius: 0.75rem;
  padding: 1.5rem 2rem;
  margin: 2rem 0;
}

.data-callout .callout-label {
  font-family: 'Manrope', system-ui, sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary-light);
  margin-bottom: 0.75rem;
}

.data-callout .callout-value {
  font-family: 'Manrope', system-ui, sans-serif;
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}

.data-callout .callout-context {
  font-size: 0.9rem;
  color: var(--on-surface-variant);
  margin-top: 0.5rem;
}

/* Article Footer */
.article-footer {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--outline-variant);
}

.article-sources {
  font-size: 0.875rem;
  color: var(--on-surface-variant);
  line-height: 1.8;
}

.article-sources h4 {
  font-family: 'Manrope', system-ui, sans-serif;
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--outline);
  margin-bottom: 0.75rem;
}

.article-sources a {
  color: var(--accent-green);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.article-sources a:hover {
  color: var(--primary);
}

/* Back Navigation */
.back-nav {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--on-surface-variant);
  text-decoration: none;
  padding: 0.5rem 0;
  transition: color 0.2s;
}

.back-nav:hover {
  color: var(--primary);
}

/* Insights List Page */
.insights-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.insight-card {
  background: white;
  border: 1px solid var(--outline-variant);
  border-radius: 0.75rem;
  padding: 2rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  text-decoration: none;
  display: block;
}

.insight-card:hover {
  border-color: var(--primary-light);
  box-shadow: 0 4px 12px rgba(0, 68, 7, 0.08);
}

.insight-card .card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  font-size: 0.8rem;
  color: var(--on-surface-variant);
}

.insight-card .card-title {
  font-family: 'Manrope', system-ui, sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--on-surface);
  margin-bottom: 0.75rem;
}

.insight-card .card-excerpt {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--on-surface-variant);
}

/* Responsive */
@media (max-width: 768px) {
  .article-title {
    font-size: 1.75rem;
  }
  .article-subtitle {
    font-size: 1.1rem;
  }
  .article-body {
    font-size: 1rem;
  }
  .article-body h2 {
    font-size: 1.4rem;
  }
  .data-callout .callout-value {
    font-size: 1.5rem;
  }
}

/* Glass Nav (used by articles with standard GIL nav) */
.glass-nav {
  background: rgba(248, 249, 255, 0.8);
  backdrop-filter: blur(20px);
}