/* ════════════════════════════════════════════════════════════
   Post Singularity Institute — Thème Hugo
   ════════════════════════════════════════════════════════════ */
:root {
  --accent:      #0071e3;
  --accent-2:    #005bb5;
  --accent-soft: #e8f1fd;
  --bg:          #f5f5f7;
  --card:        #ffffff;
  --text:        #1d1d1f;
  --text-soft:   #6e6e73;
  --border:      #d2d2d7;
  --shadow:      0 1px 3px rgba(0,0,0,0.06), 0 4px 16px rgba(0,0,0,0.06);
  --radius:      11px;
  --header-h:    58px;
  --font-title:  "HelveticaNeue-CondensedBold","Helvetica Neue Condensed Bold","Arial Narrow",sans-serif;
  --font-body:   -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}
[data-theme="dark"] {
  --accent:      #2997ff;
  --accent-2:    #0071e3;
  --accent-soft: #1a2a3a;
  --bg:          #000000;
  --card:        #1c1c1e;
  --text:        #f5f5f7;
  --text-soft:   #98989d;
  --border:      #38383a;
  --shadow:      0 1px 3px rgba(0,0,0,0.3), 0 4px 16px rgba(0,0,0,0.3);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.6;
  transition: background 0.3s, color 0.3s;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Header ── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(245,245,247,0.88);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  transition: background 0.3s;
}
[data-theme="dark"] .site-header { background: rgba(0,0,0,0.88); }
.header-inner {
  max-width: 1100px; margin: 0 auto; padding: 0 20px;
  display: flex; align-items: center; gap: 24px; height: var(--header-h);
}
.site-logo {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--font-title); font-size: 1.1rem; font-weight: 600;
  color: var(--text); text-decoration: none; flex-shrink: 0;
}
.logo-icon { color: var(--accent); font-size: 1.3rem; }
.site-nav { display: flex; gap: 4px; flex: 1; }
.nav-link {
  padding: 6px 12px; border-radius: 7px; font-size: 0.9rem;
  color: var(--text-soft); transition: background 0.15s, color 0.15s;
}
.nav-link:hover, .nav-link.active {
  background: var(--accent-soft); color: var(--accent); text-decoration: none;
}
.header-actions { display: flex; align-items: center; gap: 8px; }

/* Sélecteur de langue */
.lang-selector { position: relative; }
.lang-current {
  background: none; border: 1px solid var(--border); cursor: pointer;
  color: var(--text-soft); padding: 4px 10px; border-radius: 7px;
  font-size: 0.82rem; font-weight: 600; display: flex; align-items: center; gap: 4px;
  transition: background 0.15s, color 0.15s;
}
.lang-current:hover { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }
.lang-menu {
  position: absolute; top: calc(100% + 6px); right: 0;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  min-width: 160px; overflow: hidden; z-index: 200;
  list-style: none; padding: 0;
}
.lang-option {
  display: block; padding: 9px 14px; font-size: 0.85rem;
  color: var(--text); transition: background 0.12s;
}
.lang-option:hover { background: var(--accent-soft); text-decoration: none; }
.lang-option.active { color: var(--accent); font-weight: 600; }

.theme-toggle {
  background: none; border: none; cursor: pointer; color: var(--text-soft);
  padding: 6px; border-radius: 7px; display: flex; align-items: center;
  transition: background 0.15s, color 0.15s; font-size: 1rem;
}
.theme-toggle:hover { background: var(--accent-soft); color: var(--accent); }
.theme-toggle .icon-dark { display: none; }
[data-theme="dark"] .theme-toggle .icon-light { display: none; }
[data-theme="dark"] .theme-toggle .icon-dark { display: inline; }

/* ── Main ── */
.site-main {
  padding-top: calc(var(--header-h) + 32px);
  padding-bottom: 64px;
}
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* ── Hero ── */
.hero { text-align: center; padding: 40px 0 32px; }
.hero-title {
  font-family: var(--font-title);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 600; letter-spacing: -0.02em;
  color: var(--text); margin-bottom: 12px;
}
.hero-subtitle { font-size: 1.05rem; color: var(--text-soft); max-width: 600px; margin: 0 auto; }

/* ── Filtres ── */
.filter-bar {
  display: flex; flex-wrap: wrap; align-items: center;
  gap: 8px; margin-bottom: 28px;
}
.filter-label { font-size: 0.85rem; color: var(--text-soft); font-weight: 500; }
.filter-btn {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 20px; padding: 5px 14px; font-size: 0.82rem;
  cursor: pointer; color: var(--text-soft); transition: all 0.15s;
}
.filter-btn:hover, .filter-btn.active {
  background: var(--accent); border-color: var(--accent); color: #fff;
}

/* ── Grille ── */
.notes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.note-card {
  background: var(--card); border-radius: var(--radius);
  box-shadow: var(--shadow); overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex; flex-direction: column;
}
.note-card:hover { transform: translateY(-3px); box-shadow: 0 8px 28px rgba(0,0,0,0.12); }
.card-thumb { width: 100%; aspect-ratio: 16/9; object-fit: cover; display: block; }
.card-thumb-placeholder {
  width: 100%; aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--accent-soft) 0%, var(--border) 100%);
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem; color: var(--accent);
}
.card-body { padding: 16px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card-meta-top { display: flex; justify-content: space-between; align-items: center; }
.card-domain {
  font-size: 0.75rem; font-weight: 600; color: var(--accent);
  text-transform: uppercase; letter-spacing: 0.04em;
}
.card-lang {
  font-size: 0.7rem; background: var(--accent-soft); color: var(--accent);
  padding: 2px 7px; border-radius: 4px; font-weight: 600;
}
.card-title { font-family: var(--font-title); font-size: 1rem; font-weight: 600; line-height: 1.35; }
.card-title a { color: var(--text); }
.card-title a:hover { color: var(--accent); text-decoration: none; }
.card-author-row {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.82rem; color: var(--text-soft);
}
.card-author { font-weight: 500; }
.card-stars { font-size: 0.9rem; display: flex; align-items: center; gap: 3px; }
.star.filled { color: #ff9500; }
.star.empty  { color: var(--border); }
.card-note-num { font-size: 0.75rem; color: var(--text-soft); margin-left: 4px; }
.card-tags { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 4px; }
.card-tag {
  font-size: 0.72rem; background: var(--accent-soft); color: var(--accent);
  padding: 2px 8px; border-radius: 4px;
}
.card-tag:hover { text-decoration: none; opacity: 0.8; }

/* ── Pagination ── */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 40px; }
.pagination a, .pagination span {
  padding: 7px 14px; border-radius: 7px; font-size: 0.88rem;
  border: 1px solid var(--border); color: var(--text);
}
.pagination .active, .pagination span.active {
  background: var(--accent); border-color: var(--accent); color: #fff;
}

/* ── Footer ── */
.site-footer {
  background: var(--card); border-top: 1px solid var(--border);
  padding: 24px 0; margin-top: 64px;
}
.footer-inner {
  max-width: 1100px; margin: 0 auto; padding: 0 20px;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
}
.footer-left p { font-size: 0.82rem; color: var(--text-soft); }
.footer-sub { font-size: 0.75rem !important; }
.footer-right { display: flex; gap: 16px; }
.footer-link {
  font-size: 0.82rem; color: var(--text-soft);
  display: flex; align-items: center; gap: 5px;
}
.footer-link:hover { color: var(--accent); text-decoration: none; }

/* ── Grille de taxonomie ── */
.taxonomy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin-top: 24px;
}
.taxonomy-term {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 18px;
  display: flex; justify-content: space-between; align-items: center;
  color: var(--text); transition: all 0.15s;
  box-shadow: var(--shadow);
}
.taxonomy-term:hover {
  border-color: var(--accent); color: var(--accent);
  text-decoration: none; transform: translateY(-2px);
}
.term-name { font-weight: 500; font-size: 0.9rem; }
.term-count {
  background: var(--accent-soft); color: var(--accent);
  font-size: 0.75rem; font-weight: 600;
  padding: 2px 8px; border-radius: 10px;
}

@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.note-card { animation: fadeIn 0.3s ease both; }

@media (max-width: 768px) {
  .site-nav { display: none; }
  .notes-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; }
}