/* Passage (articles index) page styles extracted from inline <style> */

.hero-section { text-align: center; padding: 4rem 0; position: relative; overflow: hidden; }
.hero-section::before { content: ''; position: absolute; inset: 0; background: linear-gradient(45deg, rgba(34, 197, 94, 0.05), rgba(59, 130, 246, 0.05)); z-index: -1; }
.hero-title { font-size: 3.5rem; margin-bottom: 1rem; background: linear-gradient(45deg, var(--accent-green), var(--accent-blue)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; animation: floatY 8s ease-in-out infinite; }
@keyframes floatY { 0%,100% { transform: translateY(0) } 50% { transform: translateY(-6px) } }
.hero-subtitle { font-size: 1.3rem; color: var(--text-muted); margin-bottom: 3rem; }

.articles-section { padding: 3rem 0; }
.article-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: 2.5rem; margin: 3rem 0; }
.article-card { background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: 15px; padding: 2.5rem; transition: transform 0.3s ease, border-color 0.3s ease; position: relative; overflow: hidden; height: 100%; display: flex; flex-direction: column; animation: cardEnter 0.6s ease forwards; }
@keyframes cardEnter { from { opacity: 0; transform: translateY(20px) } to { opacity: 1; transform: translateY(0) } }
.article-card::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px; background: linear-gradient(90deg, var(--accent-green), var(--accent-blue)); transform: scaleX(0); transition: transform 0.4s ease; }
.article-card:hover::before { transform: scaleX(1); }
.article-card:hover { transform: translateY(-3px); border-color: var(--accent-green); }
.article-header { margin-bottom: 1.5rem; }
.article-title { font-size: 1.8rem; color: var(--accent-green); margin-bottom: 1rem; line-height: 1.3; font-weight: 600; }
.article-description { color: var(--text-muted); line-height: 1.7; margin-bottom: 2rem; flex-grow: 1; font-size: 1rem; }
.article-meta { display: flex; align-items: center; gap: 1rem; margin-bottom: 2rem; color: var(--text-muted); font-size: 0.9rem; }
.article-tag { background: var(--bg-tertiary); color: var(--accent-green); padding: 0.3rem 0.8rem; border-radius: 20px; font-size: 0.8rem; border: 1px solid var(--accent-green); }
.article-date { color: var(--text-secondary); font-size: 0.8rem; opacity: 0.7; }
.article-button { background: transparent; color: var(--accent-green); border: 2px solid var(--accent-green); padding: 1rem 2rem; border-radius: 8px; cursor: pointer; font-family: inherit; font-size: 1rem; font-weight: 600; transition: background 0.2s ease, color 0.2s ease, transform 0.15s ease, border-color 0.2s ease; position: relative; overflow: hidden; text-decoration: none; display: inline-block; text-align: center; width: 100%; margin-top: auto; }
.article-button:hover { background: var(--accent-green); color: var(--bg-primary); transform: translateY(-1px); }
.article-icon { font-size: 2rem; margin-bottom: 1rem; opacity: 0.8; }

.filter-section { text-align: center; margin: 2rem 0; padding: 2rem; background: var(--bg-secondary); border-radius: 15px; border: 1px solid var(--border-color); position: relative; z-index: 5; }
.search-container { display: flex; justify-content: center; margin-top: 1rem; position: relative; z-index: 2; }
.search-box { position: relative; width: 100%; max-width: 560px; z-index: 10; }
.search-input { width: 100%; background: var(--bg-tertiary); color: var(--text-primary); border: 1px solid var(--border-color); border-radius: 28px; padding: 0.8rem 1rem 0.8rem 2.6rem; outline: none; transition: border-color .25s ease; font-family: inherit; font-size: 0.95rem; }
.search-input::placeholder { color: var(--text-muted); }
.search-input:focus { border-color: var(--accent-green); outline: 2px solid var(--accent-green); outline-offset: -1px; }
.search-icon { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); font-size: 1rem; color: var(--text-muted); pointer-events: none; opacity: .8; }
.search-suggestions { position: absolute; top: calc(100% + 8px); left: 0; right: 0; background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: 12px; box-shadow: 0 8px 24px rgba(0, 0, 0, .12); max-height: 320px; overflow-y: auto; display: none; z-index: 9999; opacity: 0; transform: translateY(6px); transition: opacity .18s ease, transform .18s ease; }
.search-suggestions.visible { display: block; opacity: 1; transform: translateY(0); }
.suggestion-item { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.75rem 1rem; cursor: pointer; transition: background .2s ease; opacity: 0; transform: translateY(6px); }
.suggestion-item:hover { background: var(--bg-tertiary); }
.suggestion-item.in { opacity: 1; transform: translateY(0); transition: opacity .22s ease, transform .22s ease; }
.suggestion-item.active { background: color-mix(in oklab, var(--accent-green) 10%, transparent); }
.suggestion-title { color: var(--text-primary); font-size: .95rem; text-align: left; }
.suggestion-meta { display: inline-flex; gap: .4rem; flex-shrink: 0; }
.suggestion-meta .article-tag { border-color: var(--border-color); }

.filter-buttons { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; margin-top: 1rem; position: relative; z-index: 1; }
.filter-btn { background: var(--bg-tertiary); color: var(--text-primary); border: 1px solid var(--border-color); padding: 0.5rem 1.5rem; border-radius: 25px; cursor: pointer; font-family: inherit; font-size: 0.9rem; transition: all 0.3s ease; }
.filter-btn:hover, .filter-btn.active { background: var(--accent-green); color: var(--bg-primary); border-color: var(--accent-green); }

.stats-section { text-align: center; padding: 2rem 0; margin: 2rem 0; background: var(--bg-secondary); border-radius: 15px; border: 1px solid var(--border-color); }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 2rem; max-width: 600px; margin: 0 auto; }
.stat-item { text-align: center; }
.stat-number { font-size: 2.5rem; color: var(--accent-green); font-weight: bold; margin-bottom: 0.5rem; }
.stat-label { color: var(--text-muted); font-size: 0.9rem; }

/* Page fade-in and reveal */
body { opacity: 0; animation: page-fade-in .6s ease both; }
@keyframes page-fade-in { from { opacity: 0 } to { opacity: 1 } }
.reveal { opacity: 0; transform: translateY(24px); }
.reveal.in { opacity: 1; transform: translateY(0); transition: opacity .8s ease, transform .8s ease; transition-delay: var(--d, 0s); }

/* Nav underline */
.nav-menu a { position: relative; display: inline-block; overflow: hidden; text-decoration: none; }
.nav-menu a::after { content: ''; position: absolute; left: 0; bottom: 0; height: 2px; width: 100%; background: linear-gradient(90deg, var(--accent-green), var(--accent-blue)); transform: scaleX(0); transform-origin: left; transition: transform .28s ease; }
.nav-menu a:hover::after, .nav-menu a.active::after { transform: scaleX(1); }

/* Responsive */
@media (max-width: 768px) {
  .hero-title { font-size: 2.5rem; }
  .hero-subtitle { font-size: 1.1rem; }
  .article-grid { grid-template-columns: 1fr; gap: 2rem; }
  .article-card { padding: 2rem; }
  .filter-buttons { flex-direction: column; align-items: center; }
  .filter-btn { width: 100%; max-width: 200px; }
  .search-box { max-width: 100%; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 2rem; }
  .article-card { padding: 1.5rem; }
  .article-title { font-size: 1.5rem; }
  .stats-grid { grid-template-columns: 1fr; }
}

/* Additional animations used by JS filter */
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px) } to { opacity: 1; transform: translateY(0) } }

/* One-time highlight on target card */
@keyframes cardHighlight { 0%,100% { border-color: var(--border-color) } 50% { border-color: var(--accent-green) } }
.highlight-once { animation: cardHighlight 1.2s ease; }

/* Footer */
.site-footer { margin-top: 3rem; padding: 1.5rem; text-align: center; border-top: 1px solid var(--border-color); background: var(--bg-secondary); color: var(--text-muted); }
.site-footer a { color: var(--accent-green); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }