/* ============================================
   CONTRIBUTIONS PAGE STYLES
   ============================================ */

/* Intro */
.contributions-intro {
  padding: var(--space-md) var(--space-md) 0;
  text-align: center;
}

.contributions-lead {
  max-width: 720px;
  margin: 0 auto;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-style: italic;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

.contributions-lead p {
  margin: 0;
}

/* Card Grid */
.contributions-grid {
  padding: var(--space-lg) var(--space-md);
}

.contrib-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-md);
  max-width: 1200px;
  margin: 0 auto;
}

/* Individual Card */
.contrib-card {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: var(--space-md);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--duration-normal) var(--transition-smooth),
              border-color var(--duration-normal) var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

.contrib-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.contrib-card.is-expanded {
  grid-column: 1 / -1;
  border-color: var(--color-accent);
  box-shadow: var(--shadow-lg);
}

/* Card Front (always visible) */
.contrib-icon {
  display: block;
  font-size: 2.75rem;
  margin-bottom: var(--space-sm);
  line-height: 1;
}

.contrib-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.contrib-summary {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
  flex: 1;
}

.contrib-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: none;
  border: none;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-accent);
  cursor: pointer;
  padding: 0.5rem 0;
  transition: gap var(--duration-fast);
}

.contrib-toggle:hover {
  gap: 0.75rem;
}

.contrib-arrow {
  transition: transform var(--duration-fast);
}

.contrib-toggle[aria-expanded="true"] .contrib-arrow {
  transform: rotate(90deg);
}

/* Expanded Detail */
.contrib-detail {
  margin-top: var(--space-sm);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
  animation: contribFadeIn var(--duration-normal) var(--transition-smooth);
}

@keyframes contribFadeIn {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.contrib-detail-text {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

.contrib-figures {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
  padding: 0.75rem 1rem;
  background: rgba(212, 175, 55, 0.06);
  border-radius: 10px;
  border-left: 3px solid var(--color-accent);
}

.contrib-figures strong {
  color: var(--color-text);
}

/* Further Reading Links */
.contrib-links {
  margin-top: var(--space-sm);
}

.contrib-links-heading {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.contrib-links-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.contrib-links-list li a {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.9rem;
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--duration-fast);
}

.contrib-links-list li a:hover {
  text-decoration: underline;
}

.external-icon {
  font-size: 0.75rem;
  opacity: 0.6;
}

/* Collapse Button */
.contrib-collapse {
  display: inline-block;
  margin-top: var(--space-sm);
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-muted);
  padding: 0.4rem 1rem;
  cursor: pointer;
  transition: border-color var(--duration-fast), color var(--duration-fast);
}

.contrib-collapse:hover {
  border-color: var(--color-accent);
  color: var(--color-text);
}

/* CTA Section */
.contrib-cta {
  padding: var(--space-xl) var(--space-md);
}

.contrib-cta-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.contrib-cta-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.contrib-cta-description {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

.contrib-cta-buttons {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
}

/* Responsive */
@media (max-width: 768px) {
  .contrib-cards {
    grid-template-columns: 1fr;
  }

  .contrib-card.is-expanded {
    grid-column: 1;
  }

  .contrib-icon {
    font-size: 2.25rem;
  }

  .contrib-title {
    font-size: 1.2rem;
  }

  .contrib-cta-buttons {
    flex-direction: column;
    align-items: center;
  }
}