/* Articles page styles - Premium accordion approach */

:root {
  --primary: #4a7c3f;
  --primary-light: #f1f8f0;
  --secondary: #5a8c4f;
  --accent: #2554c7;
  --text-muted: #666;
  --bg-subtle: #f8f9fa;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --radius: 12px;
  --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Container logic */
.articles-layout {
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - 200px);
}

/* Accordion Styles */
.accordion {
  margin-top: 2rem;
}

.accordion-item {
  background: white;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid rgba(0,0,0,0.05);
  transition: var(--transition);
}

.accordion-header {
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
  background: white;
  transition: var(--transition);
}

.accordion-header:hover {
  background: var(--primary-light);
}

.accordion-header h2 {
  font-size: 1.25rem;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.accordion-icon {
  font-size: 1.2rem;
  transition: transform 0.3s ease;
  color: var(--primary);
}

.accordion-item.active {
  border-left: 6px solid var(--primary);
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
}

/* Content Area */
.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease-out;
  background: white;
}

.accordion-item.active .accordion-content {
  max-height: 2000px; /* Large enough for any section */
}

.section-body {
  padding: 1.5rem;
  border-top: 1px solid #f0f0f0;
}

.section-intro {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 1.5rem;
  font-style: italic;
}

/* Article Cards inside accordion */
.article-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.article-card {
  background: var(--bg-subtle);
  padding: 1.25rem;
  border-radius: 8px;
  border: 1px solid transparent;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  background: white;
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.article-card h4 {
  color: #333;
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.article-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.4;
  margin-bottom: 1rem;
  flex-grow: 1;
}

.article-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.article-link:hover {
  text-decoration: underline;
}

/* Reader Mode (Single Article) */
.reader-mode {
  display: none;
  animation: fadeIn 0.4s ease-out;
  height: calc(100vh - 160px);
  flex-direction: column;
}

.reader-header {
  padding: 1rem 0;
  display: flex;
  align-items: center;
  gap: 1rem;
  border-bottom: 1px solid #eee;
  margin-bottom: 1rem;
}

.back-btn {
  background: var(--primary);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  cursor: pointer;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.back-btn:hover {
  background: var(--secondary);
  transform: translateX(-3px);
}

#article-iframe {
  width: 100%;
  flex-grow: 1;
  border: none;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  background: white;
}

/* Transitions */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Desktop sizing */
@media (min-width: 1024px) {
  .section-body {
    padding: 2.5rem;
  }
}