/* ============================================================
   Observatoire de la Trame — Site statique
   Thème : dark cosmic  |  Mobile-first responsive
   ============================================================ */

/* ── Variables ───────────────────────────────────────────── */
:root {
  --bg:              #080808;
  --bg-card:         #0f0f0f;
  --bg-card-h:       #131313;
  --bg-tag:          #111008;
  --border:          #1c1a12;
  --border-h:        #2e2a1c;

  --accent:          #c8a44c;
  --accent-dim:      rgba(200, 164, 76, 0.12);
  --accent-glow:     rgba(200, 164, 76, 0.06);
  --accent-h:        #ddb85e;

  --text:            #ddd6c4;
  --text-sec:        #928a7a;
  --text-muted:      #524a3c;

  --nav-h:           68px;
  --max-w:           1080px;
  --r:               2px;
  --t:               0.18s ease;

  --font:            'Inter', 'Helvetica Neue', Arial, sans-serif;
}

/* ── Reset ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-weight: 400;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a    { color: inherit; text-decoration: none; }
img  { display: block; max-width: 100%; }
button { cursor: pointer; border: none; background: none; font-family: inherit; color: inherit; }
ul   { list-style: none; }
[hidden] { display: none !important; }

/* ── Utility ─────────────────────────────────────────────── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}
.is-hidden { display: none !important; }

/* ═══════════════════════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════════════════════ */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(8, 8, 8, 0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  z-index: 200;
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 11px;
  flex-shrink: 0;
  opacity: 0.9;
  transition: opacity var(--t);
}
.nav-logo:hover { opacity: 1; }
.logo-text {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.13em;
  line-height: 1.55;
  color: var(--text);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  flex: 1;
  justify-content: center;
}
.nav-links a {
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.13em;
  color: var(--text-sec);
  transition: color var(--t);
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.nav-search-btn {
  color: var(--text-sec);
  padding: 8px;
  transition: color var(--t);
  display: flex;
  align-items: center;
}
.nav-search-btn:hover { color: var(--text); }
.nav-menu-btn {
  display: none;
  color: var(--text-sec);
  padding: 8px;
}
.nav-mobile-menu {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.nav-mobile-menu a {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.13em;
  color: var(--text-sec);
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}
.nav-mobile-menu a:last-child { border-bottom: none; }

/* ═══════════════════════════════════════════════════════════
   HERO (list page)
   ═══════════════════════════════════════════════════════════ */
.page-hero {
  padding-top: calc(var(--nav-h) + 40px);
  padding-bottom: 32px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  margin-bottom: 36px;
}
.hero-bg-glow {
  position: absolute;
  top: 0; right: -5%;
  width: 55%; height: 100%;
  background:
    radial-gradient(ellipse at 75% 35%, rgba(200, 164, 76, 0.05) 0%, transparent 65%),
    radial-gradient(ellipse at 85% 70%, rgba(60, 40, 120, 0.04) 0%, transparent 55%);
  pointer-events: none;
}
.hero-row {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.hero-content { flex-shrink: 0; }
.hero-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1;
  text-transform: uppercase;
  color: var(--text);
}
.hero-sub {
  margin-top: 8px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* ═══════════════════════════════════════════════════════════
   FILTER BAR
   ═══════════════════════════════════════════════════════════ */
.filter-bar {
  flex: 1;
  min-width: 0;
  display: flex;
  justify-content: flex-end;
}
.filter-inner {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 2px;
}
.filter-inner::-webkit-scrollbar { display: none; }
.filter-label {
  font-size: 9.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  text-transform: uppercase;
}
.filter-divider {
  width: 1px; height: 18px;
  background: var(--border);
  flex-shrink: 0;
}
.filter-tag {
  font-size: 9.5px;
  font-weight: 500;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  padding: 6px 13px;
  border: 1px solid var(--border);
  border-radius: var(--r);
  background: transparent;
  color: var(--text-sec);
  white-space: nowrap;
  flex-shrink: 0;
  transition: all var(--t);
}
.filter-tag:hover {
  border-color: var(--border-h);
  color: var(--text);
}
.filter-tag.active,
.filter-tag[aria-pressed="true"] {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

/* ═══════════════════════════════════════════════════════════
   ARTICLE CARDS (list)
   ═══════════════════════════════════════════════════════════ */
.articles-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: 8px;
}
.article-card {
  display: grid;
  grid-template-columns: 220px 1fr;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  overflow: hidden;
  transition: background var(--t), border-color var(--t), transform var(--t);
  color: inherit;
}
.article-card:hover {
  background: var(--bg-card-h);
  border-color: var(--border-h);
  transform: translateY(-1px);
}

/* ─ Card image ─ */
.card-image-wrap {
  position: relative;
  overflow: hidden;
  background: #0a0a0a;
  aspect-ratio: 4/3;
}
.card-image-wrap img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.82;
  transition: transform 0.45s ease, opacity var(--t);
}
.article-card:hover .card-image-wrap img {
  transform: scale(1.05);
  opacity: 0.9;
}
.card-image-placeholder {
  width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  color: var(--accent);
  opacity: 0.18;
  background: linear-gradient(140deg, #0c0c0c, #111008);
}

/* ─ Card body ─ */
.card-body {
  padding: 22px 26px;
  display: flex;
  flex-direction: column;
  gap: 11px;
}
.card-meta {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}
.card-date {
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  text-transform: uppercase;
  padding-top: 4px;
}
.card-score { flex-shrink: 0; text-align: right; }
.score-label {
  display: block;
  font-size: 8.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1px;
}
.score-value {
  font-size: 26px;
  font-weight: 300;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.01em;
}
.score-denom {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 400;
  letter-spacing: 0;
}
.card-title {
  font-size: 17px;
  font-weight: 500;
  line-height: 1.3;
  color: var(--text);
  transition: color var(--t);
}
.article-card:hover .card-title { color: #ede8dc; }
.card-synth-label {
  font-size: 8.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 5px;
}
.card-summary {
  font-size: 12.5px;
  color: var(--text-sec);
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.card-facets {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}
.facet-tag {
  font-size: 8.5px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 8px;
  border: 1px solid var(--border);
  border-radius: 1px;
  color: var(--text-muted);
  background: var(--bg-tag);
  white-space: nowrap;
}
.facet-extra {
  color: var(--accent);
  border-color: rgba(200, 164, 76, 0.2);
  background: var(--accent-dim);
}
.card-persona {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}
.persona-symbol {
  font-size: 14px;
  color: var(--accent);
  opacity: 0.75;
  line-height: 1;
}
.persona-name {
  font-size: 8.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-sec);
}

/* ─ Load more ─ */
.load-more-wrap {
  padding: 48px 0 64px;
  text-align: center;
}
.load-more-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 13px 40px;
  border: 1px solid var(--border);
  border-radius: var(--r);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--text-sec);
  text-transform: uppercase;
  background: transparent;
  transition: all var(--t);
}
.load-more-btn:hover {
  border-color: var(--border-h);
  color: var(--text);
  background: var(--accent-glow);
}

/* ═══════════════════════════════════════════════════════════
   ARTICLE DETAIL — topbar
   ═══════════════════════════════════════════════════════════ */
.article-topbar {
  padding-top: calc(var(--nav-h) + 28px);
  padding-bottom: 20px;
}
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-sec);
  transition: color var(--t);
}
.back-link:hover { color: var(--text); }
.article-facets-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  padding-bottom: 28px;
}

/* ─ Hero image ─ */
.article-hero-wrap {
  width: 100%;
  margin-bottom: 0;
  overflow: hidden;
  max-height: 340px;
}
.article-hero-img {
  width: 100%;
  aspect-ratio: 16 / 5;
  object-fit: cover;
  object-position: center 35%;
  opacity: 0.88;
  display: block;
}
.article-hero-placeholder {
  width: 100%;
  aspect-ratio: 16 / 5;
  background: linear-gradient(140deg, #0c0b08 0%, #18150e 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 56px;
  color: var(--accent);
  opacity: 0.12;
}

/* ═══════════════════════════════════════════════════════════
   ARTICLE DETAIL — main layout
   ═══════════════════════════════════════════════════════════ */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 248px;
  gap: 52px;
  margin-top: 28px;
  align-items: start;
  padding-bottom: 80px;
}

/* ─ Header ─ */
.article-header { margin-bottom: 44px; }
.article-date {
  display: block;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.article-title {
  font-size: clamp(22px, 3.2vw, 36px);
  font-weight: 500;
  line-height: 1.22;
  color: var(--text);
  margin-bottom: 16px;
}
.article-source-link {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11.5px;
  color: var(--text-muted);
  transition: color var(--t);
}
.article-source-link:hover { color: var(--text-sec); }

/* ─ Body: 2 columns ─ */
.article-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 44px;
}
.body-section-title {
  font-size: 9.5px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.article-synth-text {
  font-size: 13.5px;
  color: var(--text-sec);
  line-height: 1.65;
  margin-bottom: 32px;
}
.detected-facets { margin-top: 4px; }
.detected-facets-title {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 14px;
}
.facets-list { display: flex; flex-direction: column; gap: 10px; }
.facets-list-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-sec);
}
.facet-bullet {
  width: 20px; height: 20px;
  border: 1px solid var(--border-h);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
}
.facet-bullet::after {
  content: '';
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.55;
}

/* ─ Interpretation ─ */
.interpretation-text { font-size: 13.5px; color: var(--text-sec); line-height: 1.65; }
.interpretation-text p { margin-bottom: 18px; }
.interpretation-text p:last-child { margin-bottom: 0; }
.interpretation-highlight {
  font-size: 13.5px;
  color: var(--accent);
  line-height: 1.65;
  font-style: italic;
  margin-bottom: 0 !important;
}

/* ─ Related ─ */
.related-section {
  margin-top: 56px;
  padding: 28px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  cursor: default;
  transition: border-color var(--t);
}
.related-section:hover { border-color: var(--border-h); }
.related-label {
  display: flex;
  align-items: center;
  gap: 16px;
}
.related-trame-icon { width: 36px; height: 36px; flex-shrink: 0; }
.related-text {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-sec);
}
.related-subtext {
  font-size: 10.5px;
  color: var(--text-muted);
  margin-top: 3px;
}
.related-arrow {
  color: var(--text-muted);
  flex-shrink: 0;
  transition: color var(--t), transform var(--t);
}
.related-section:hover .related-arrow {
  color: var(--text-sec);
  transform: translateX(4px);
}

/* ═══════════════════════════════════════════════════════════
   SIDEBAR
   ═══════════════════════════════════════════════════════════ */
.article-sidebar {
  position: sticky;
  top: calc(var(--nav-h) + 20px);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.sidebar-score-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 24px;
  text-align: center;
}
.sidebar-score-label {
  font-size: 8.5px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.sidebar-score-value {
  font-size: 58px;
  font-weight: 300;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.02em;
}
.sidebar-score-value .denom {
  font-size: 24px;
  color: var(--text-muted);
  letter-spacing: 0;
}
.sidebar-persona-icon {
  margin-top: 20px;
  display: flex;
  justify-content: center;
}
.sidebar-persona-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 18px 22px;
}
.sidebar-persona-label {
  font-size: 8.5px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.sidebar-persona-name {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 10px;
}
.sidebar-persona-desc {
  font-size: 11.5px;
  color: var(--text-sec);
  line-height: 1.55;
}

/* ═══════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════ */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 36px 0;
  margin-top: 40px;
}
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  flex-wrap: wrap;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0.8;
  transition: opacity var(--t);
}
.footer-logo:hover { opacity: 1; }
.logo-text-sm {
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.12em;
  line-height: 1.55;
  color: var(--text-sec);
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}
.footer-nav a {
  font-size: 9.5px;
  font-weight: 500;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color var(--t);
}
.footer-nav a:hover { color: var(--text-sec); }
.footer-social { display: flex; gap: 8px; }
.social-link {
  width: 32px; height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: var(--r);
  color: var(--text-muted);
  transition: color var(--t), border-color var(--t);
}
.social-link:hover {
  color: var(--text-sec);
  border-color: var(--border-h);
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════ */

/* Tablet ─ 900px */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-menu-btn { display: flex; align-items: center; }

  .article-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .article-sidebar {
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .sidebar-score-card { text-align: left; }
  .sidebar-persona-icon { justify-content: flex-start; margin-top: 12px; }

  .article-body {
    grid-template-columns: 1fr;
    gap: 36px;
  }
}

/* Mobile ─ 640px */
@media (max-width: 640px) {
  :root { --nav-h: 60px; }

  .container { padding: 0 16px; }

  .hero-title { font-size: clamp(40px, 12vw, 64px); }

  .article-card {
    grid-template-columns: 1fr;
  }
  .card-image-wrap {
    aspect-ratio: 16 / 9;
  }
  .card-body { padding: 18px; }

  .article-hero-img,
  .article-hero-placeholder {
    aspect-ratio: 16 / 7;
  }

  .article-sidebar {
    grid-template-columns: 1fr;
  }

  .footer-inner { flex-direction: column; align-items: flex-start; gap: 20px; }
  .footer-nav { gap: 16px; }
}

/* Large ─ 1200px */
@media (min-width: 1200px) {
  :root { --max-w: 1140px; }
  .article-layout { grid-template-columns: 1fr 268px; }
}