/* ═══════════════════════════════════════════════════════
   UNIVERSITÉ PARIS CITÉ · VERSION 2 STYLESHEET
   Charte graphique : Blanc & Épuré, Accents Bordeaux (#8A1538)
═══════════════════════════════════════════════════════ */

/* ── Reset & Variables ──────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Université Paris Cité - Couleur d'accent */
  --brand-bordeaux:        #8A1538;
  --brand-bordeaux-dark:   #680f2a;
  --brand-bordeaux-mid:    #b83a60;
  --brand-bordeaux-light:  #d4768e;
  --brand-bordeaux-pale:   #fdf2f4;
  --brand-bordeaux-tint:   #fae6ea;

  /* Neutres Académiques Clairs */
  --text-primary:    #111827;
  --text-secondary:  #374151;
  --text-muted:      #6b7280;
  --text-light:      #9ca3af;

  --bg-white:        #ffffff;
  --bg-light:        #f9fafb;
  --bg-subtle:       #f3f4f6;
  --bg-card:         #ffffff;

  --border-light:    #e5e7eb;
  --border-medium:   #d1d5db;
  --border-strong:   #9ca3af;

  /* Typographie */
  --font-sans:  'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-serif: 'Newsreader', Georgia, serif;

  /* Dimensions & Rayons */
  --container-max: 1220px;
  --radius-sm:     6px;
  --radius-md:     10px;
  --radius-lg:     16px;
  --radius-xl:     24px;

  /* Ombres subtiles professionnelles */
  --shadow-subtle: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm:     0 2px 8px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-md:     0 6px 20px rgba(0, 0, 0, 0.06), 0 2px 6px rgba(0, 0, 0, 0.03);
  --shadow-lg:     0 12px 36px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);

  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-med:  0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background-color: var(--bg-white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--brand-bordeaux);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--brand-bordeaux-dark);
}

/* ── Utilitaires ────────────────────────────────────── */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}
.section-white {
  background-color: var(--bg-white);
}
.section-light {
  background-color: var(--bg-light);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.hidden {
  display: none !important;
}

/* En-têtes de sections */
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem auto;
}
.section-kicker {
  display: inline-block;
  font-size: calc(0.78rem * var(--content-scale, 1));
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--brand-bordeaux);
  background-color: var(--brand-bordeaux-pale);
  padding: 0.28rem 0.85rem;
  border-radius: 999px;
  margin-bottom: 0.85rem;
}
.section-title {
  font-family: var(--font-sans);
  font-size: clamp(calc(1.85rem * var(--content-scale, 1)), 3.2vw, calc(2.5rem * var(--content-scale, 1)));
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 0.85rem;
  letter-spacing: -0.02em;
}
.section-desc {
  font-size: calc(1.05rem * var(--content-scale, 1));
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Boutons */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--brand-bordeaux);
  color: #ffffff !important;
  font-size: calc(0.92rem * var(--content-scale, 1));
  font-weight: 600;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--brand-bordeaux);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 6px rgba(138, 21, 56, 0.2);
}
.btn-primary:hover {
  background-color: var(--brand-bordeaux-dark);
  border-color: var(--brand-bordeaux-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(138, 21, 56, 0.25);
  text-decoration: none;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--bg-white);
  color: var(--text-secondary) !important;
  font-size: calc(0.92rem * var(--content-scale, 1));
  font-weight: 600;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.btn-outline:hover {
  background-color: var(--bg-subtle);
  color: var(--brand-bordeaux) !important;
  border-color: var(--brand-bordeaux-light);
  text-decoration: none;
}

.btn-secondary {
  padding: 0.55rem 1rem;
  background-color: var(--bg-subtle);
  color: var(--text-secondary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  font-size: calc(0.85rem * var(--content-scale, 1));
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.btn-secondary:hover {
  background-color: var(--brand-bordeaux-pale);
  color: var(--brand-bordeaux);
  border-color: var(--brand-bordeaux-mid);
}

.btn-text {
  background: none;
  border: none;
  color: var(--brand-bordeaux);
  font-size: calc(0.88rem * var(--content-scale, 1));
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}
.btn-text:hover {
  background-color: var(--brand-bordeaux-pale);
}

.btn-text-danger {
  background: none;
  border: none;
  color: #dc2626;
  font-size: calc(0.85rem * var(--content-scale, 1));
  font-weight: 600;
  cursor: pointer;
  padding: 0.5rem 0.8rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}
.btn-text-danger:hover {
  background-color: #fee2e2;
}

/* ═══════════════════════════════════════════════════════
   NAVIGATION
═══════════════════════════════════════════════════════ */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  transition: box-shadow var(--transition-fast);
}
.site-nav.scrolled {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
}

.nav-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  color: var(--text-primary);
  text-decoration: none;
}
.nav-logo img {
  height: 38px;
  width: auto;
  display: block;
}
.nav-institution {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.nav-institution strong {
  font-size: calc(0.95rem * var(--content-scale, 1));
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}
.nav-sub {
  font-size: calc(0.75rem * var(--content-scale, 1));
  color: var(--text-muted);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  list-style: none;
}
.nav-link {
  font-size: calc(0.88rem * var(--content-scale, 1));
  font-weight: 600;
  color: var(--text-secondary);
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}
.nav-link:hover {
  color: var(--brand-bordeaux);
  background-color: var(--brand-bordeaux-pale);
  text-decoration: none;
}
.nav-link.active {
  color: var(--brand-bordeaux);
  background-color: var(--brand-bordeaux-pale);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.nav-version-switch {
  font-size: calc(0.78rem * var(--content-scale, 1));
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border-medium);
  background-color: var(--bg-subtle);
  color: var(--text-muted);
}
.nav-version-switch:hover {
  background-color: var(--brand-bordeaux-pale);
  color: var(--brand-bordeaux);
  border-color: var(--brand-bordeaux-mid);
  text-decoration: none;
}

.nav-burger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.4rem;
  flex-direction: column;
  gap: 4px;
}
.nav-burger span {
  width: 22px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-fast);
}

.nav-mobile {
  display: none;
  flex-direction: column;
  background: var(--bg-white);
  padding: 1rem 1.5rem 1.5rem;
  border-top: 1px solid var(--border-light);
}
.nav-mobile a {
  padding: 0.75rem 0;
  font-size: calc(0.95rem * var(--content-scale, 1));
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-light);
}
.mobile-v1-link {
  color: var(--brand-bordeaux) !important;
  margin-top: 0.5rem;
}
.nav-mobile.open {
  display: flex;
}

@media (max-width: 960px) {
  .nav-links { display: none; }
  .nav-burger { display: flex; }
}

/* ═══════════════════════════════════════════════════════
   HERO SECTION (Clair, académique, soigné)
═══════════════════════════════════════════════════════ */
.hero {
  position: relative;
  background: radial-gradient(circle at 50% 10%, #ffffff 0%, #fafbfc 60%, #f4f5f8 100%);
  padding: 7.5rem 0 5rem 0;
  border-bottom: 1px solid var(--border-light);
  overflow: hidden;
}

.hero-bg-lines {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(229, 231, 235, 0.4) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(229, 231, 235, 0.4) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  mask-image: radial-gradient(circle at 50% 40%, black, transparent 80%);
}

.hero-container {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 860px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  background-color: var(--brand-bordeaux-pale);
  border: 1px solid var(--brand-bordeaux-tint);
  border-radius: 999px;
  font-size: calc(0.82rem * var(--content-scale, 1));
  font-weight: 700;
  color: var(--brand-bordeaux);
  margin-bottom: 1.5rem;
}
.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--brand-bordeaux);
}

.hero-title {
  font-family: var(--font-sans);
  font-size: clamp(calc(2.4rem * var(--content-scale, 1)), 5.2vw, calc(3.8rem * var(--content-scale, 1)));
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}
.hero-title em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--brand-bordeaux);
}

.hero-lead {
  font-size: clamp(calc(1.05rem * var(--content-scale, 1)), 2.2vw, calc(1.25rem * var(--content-scale, 1)));
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 700px;
  margin: 0 auto 2.25rem auto;
}

.hero-characteristics {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
  margin-bottom: 2.5rem;
}
.charac-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background-color: var(--bg-white);
  border: 1px solid var(--border-medium);
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  font-size: calc(0.82rem * var(--content-scale, 1));
  font-weight: 600;
  color: var(--text-secondary);
  box-shadow: var(--shadow-subtle);
  transition: all var(--transition-fast);
}
.charac-pill i {
  color: var(--brand-bordeaux);
  font-size: calc(0.8rem * var(--content-scale, 1));
}
.charac-pill:hover {
  border-color: var(--brand-bordeaux);
  background-color: var(--brand-bordeaux-pale);
  color: var(--brand-bordeaux);
  transform: translateY(-1px);
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

/* ═══════════════════════════════════════════════════════
   A — CONTEXTE EMPIRIQUE (Cartes claires)
═══════════════════════════════════════════════════════ */
.data-cards-container {
  max-width: 780px;
  margin: 0 auto 2.5rem auto;
}

.data-cards-slider {
  position: relative;
  min-height: 380px;
}

.data-card {
  display: none;
  background-color: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  border-top: 4px solid var(--brand-bordeaux);
  animation: cardFade 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.data-card.active {
  display: block;
}

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

.card-pill-tag {
  display: inline-block;
  font-size: calc(0.75rem * var(--content-scale, 1));
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--brand-bordeaux);
  background-color: var(--brand-bordeaux-pale);
  padding: 0.2rem 0.7rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
}

.data-card-number {
  font-family: var(--font-sans);
  font-size: calc(4.8rem * var(--content-scale, 1));
  font-weight: 800;
  color: var(--brand-bordeaux);
  line-height: 1;
  margin-bottom: 0.5rem;
  letter-spacing: -0.04em;
}
.data-card-number .unit {
  font-size: calc(2.6rem * var(--content-scale, 1));
  font-weight: 700;
  color: var(--brand-bordeaux-mid);
}

.data-card-split-stats {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1rem;
}
.split-box {
  display: flex;
  flex-direction: column;
}
.split-num {
  font-size: calc(3.6rem * var(--content-scale, 1));
  font-weight: 800;
  color: var(--brand-bordeaux);
  line-height: 1;
}
.split-num .unit {
  font-size: calc(2rem * var(--content-scale, 1));
  color: var(--brand-bordeaux-mid);
}
.split-desc {
  font-size: calc(0.85rem * var(--content-scale, 1));
  font-weight: 600;
  color: var(--text-muted);
}
.split-divider {
  font-size: calc(0.85rem * var(--content-scale, 1));
  font-weight: 700;
  color: var(--text-light);
  text-transform: uppercase;
}

.data-card-heading {
  font-size: calc(1.2rem * var(--content-scale, 1));
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.data-card-text {
  font-size: calc(1rem * var(--content-scale, 1));
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.data-card-prompt {
  background-color: var(--bg-light);
  border-left: 3px solid var(--brand-bordeaux);
  padding: 0.85rem 1.15rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 1.5rem;
  font-size: calc(0.92rem * var(--content-scale, 1));
  color: var(--text-primary);
  display: flex;
  gap: 0.65rem;
  align-items: flex-start;
}
.data-card-prompt i {
  color: var(--brand-bordeaux);
  font-size: calc(1rem * var(--content-scale, 1));
  margin-top: 3px;
  flex-shrink: 0;
}

.data-card-source {
  font-size: calc(0.8rem * var(--content-scale, 1));
  color: var(--text-muted);
  border-top: 1px solid var(--border-light);
  padding-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.data-card-source a {
  font-weight: 600;
  color: var(--brand-bordeaux);
}
.source-warning {
  color: #b45309;
  font-size: calc(0.76rem * var(--content-scale, 1));
}

.slider-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 1.5rem;
}
.slider-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border-medium);
  background-color: var(--bg-white);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}
.slider-btn:hover {
  border-color: var(--brand-bordeaux);
  color: var(--brand-bordeaux);
  background-color: var(--brand-bordeaux-pale);
}
.slider-dots {
  display: flex;
  gap: 0.4rem;
}
.slider-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: none;
  background-color: var(--border-strong);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.slider-dot.active {
  background-color: var(--brand-bordeaux);
  width: 22px;
  border-radius: 999px;
}

.insight-banner {
  max-width: 780px;
  margin: 0 auto;
  background-color: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.15rem 1.5rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
}
.insight-banner-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--brand-bordeaux-pale);
  color: var(--brand-bordeaux);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: calc(1rem * var(--content-scale, 1));
}
.insight-banner-text {
  font-size: calc(0.92rem * var(--content-scale, 1));
  color: var(--text-secondary);
  line-height: 1.55;
}
.insight-banner-text strong {
  color: var(--text-primary);
}

/* ═══════════════════════════════════════════════════════
   B — MODÈLE SSoS (ELLIPSES EMBOÎTÉES SUR FOND BLANC)
═══════════════════════════════════════════════════════ */
.ssos-workspace {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 2rem;
  align-items: start;
}
@media (max-width: 1024px) {
  .ssos-workspace {
    grid-template-columns: 1fr;
  }
}

.ssos-figure-container {
  background-color: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-md);
}

.figure-caption-top {
  font-size: calc(0.88rem * var(--content-scale, 1));
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-light);
}
.fig-number {
  font-weight: 700;
  color: var(--brand-bordeaux);
}

.ssos-svg-wrapper {
  position: relative;
  width: 100%;
  background-color: #ffffff;
  border-radius: var(--radius-md);
  border: 1px dashed var(--border-medium);
  padding: 0.5rem;
  overflow: hidden;
}

#ssosSvg {
  width: 100%;
  height: auto;
  display: block;
}

/* Styles SVG pour les ellipses SSoS */
.ssos-layer-group {
  cursor: pointer;
  outline: none;
}
.ssos-ellipse {
  fill: #ffffff;
  stroke: #374151;
  stroke-width: 1.8;
  transition: all var(--transition-med);
}
.ellipse-layer-5 {
  fill: #fafbfc;
  stroke: #4b5563;
  stroke-width: 2;
}
.ellipse-layer-4 {
  fill: #f9fafb;
  stroke: #374151;
  stroke-width: 2;
}
.ellipse-layer-meso {
  fill: #fcfcfc;
  stroke: #1f2937;
  stroke-width: 2;
}
.ellipse-layer-micro {
  fill: #ffffff;
  stroke: var(--brand-bordeaux);
  stroke-width: 2.5;
}

.ellipse-divider-dash {
  stroke: #9ca3af;
  stroke-dasharray: 4, 4;
  stroke-width: 1.5;
  fill: none;
}

/* Textes dans l'ellipse */
.ellipse-title-main {
  text-anchor: middle;
  font-family: var(--font-sans);
  font-size: 12.5px;
  font-weight: 800;
  fill: #111827;
  letter-spacing: 0.05em;
  pointer-events: none;
}
.ellipse-title-sub {
  text-anchor: middle;
  font-family: var(--font-sans);
  font-size: 11.5px;
  font-weight: 700;
  fill: var(--brand-bordeaux);
  letter-spacing: 0.03em;
  pointer-events: none;
}
.ellipse-desc-text {
  text-anchor: middle;
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 500;
  fill: #4b5563;
  pointer-events: none;
}

.ellipse-micro-title {
  text-anchor: middle;
  font-family: var(--font-sans);
  font-size: 12.5px;
  font-weight: 800;
  fill: var(--brand-bordeaux);
  letter-spacing: 0.06em;
  pointer-events: none;
}
.ellipse-micro-sub {
  text-anchor: middle;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  fill: #111827;
  pointer-events: none;
}
.ellipse-micro-details {
  text-anchor: middle;
  font-family: var(--font-sans);
  font-size: 9.5px;
  font-weight: 500;
  fill: #4b5563;
  pointer-events: none;
}

/* Hover & Active states sur SVG */
.ssos-layer-group:hover .ssos-ellipse {
  stroke: var(--brand-bordeaux);
  stroke-width: 3;
  filter: drop-shadow(0 2px 8px rgba(138, 21, 56, 0.15));
}
.ssos-layer-group.active-layer .ssos-ellipse {
  stroke: var(--brand-bordeaux);
  stroke-width: 3.5;
  fill: var(--brand-bordeaux-pale);
}

.figure-legend-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border-light);
}
.legend-hint {
  font-size: calc(0.8rem * var(--content-scale, 1));
  color: var(--text-muted);
}
.legend-hint i {
  color: var(--brand-bordeaux);
  margin-right: 0.3rem;
}
.legend-reset-btn {
  background: none;
  border: 1px solid var(--border-medium);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: calc(0.78rem * var(--content-scale, 1));
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.legend-reset-btn:hover {
  border-color: var(--brand-bordeaux);
  color: var(--brand-bordeaux);
  background-color: var(--brand-bordeaux-pale);
}

/* Panneau de détails SSoS */
.level-detail-card {
  background-color: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  min-height: 480px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.detail-placeholder {
  text-align: center;
}
.placeholder-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background-color: var(--brand-bordeaux-pale);
  color: var(--brand-bordeaux);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: calc(1.4rem * var(--content-scale, 1));
  margin: 0 auto 1.25rem auto;
}
.detail-placeholder h3 {
  font-size: calc(1.2rem * var(--content-scale, 1));
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}
.detail-placeholder p {
  font-size: calc(0.92rem * var(--content-scale, 1));
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.level-pills-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  text-align: left;
}
.pill-preview {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 0.9rem;
  background-color: var(--bg-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  font-size: calc(0.85rem * var(--content-scale, 1));
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.pill-preview:hover {
  background-color: var(--brand-bordeaux-pale);
  color: var(--brand-bordeaux);
  border-color: var(--brand-bordeaux-light);
}
.pill-preview .dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}

.detail-active {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.detail-header {
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 1rem;
}
.detail-badge {
  display: inline-block;
  font-size: calc(0.72rem * var(--content-scale, 1));
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  background-color: var(--brand-bordeaux-pale);
  color: var(--brand-bordeaux);
  margin-bottom: 0.5rem;
}
.detail-title {
  font-size: calc(1.35rem * var(--content-scale, 1));
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 0.35rem;
}
.detail-subtitle {
  font-size: calc(0.88rem * var(--content-scale, 1));
  color: var(--text-muted);
}

.detail-section h4 {
  font-size: calc(0.92rem * var(--content-scale, 1));
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.45rem;
}
.detail-items-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.detail-items-list li {
  font-size: calc(0.88rem * var(--content-scale, 1));
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  line-height: 1.5;
}
.detail-items-list li i {
  color: var(--brand-bordeaux);
  margin-top: 3px;
  font-size: calc(0.75rem * var(--content-scale, 1));
  flex-shrink: 0;
}

.detail-question-box {
  background-color: var(--brand-bordeaux-pale);
  border: 1px solid var(--brand-bordeaux-tint);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
}
.detail-question-box .box-label {
  font-size: calc(0.78rem * var(--content-scale, 1));
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--brand-bordeaux);
  margin-bottom: 0.35rem;
}
.detail-question-box p {
  font-size: calc(0.88rem * var(--content-scale, 1));
  font-style: italic;
  color: var(--text-primary);
  line-height: 1.55;
}

.quote-card {
  background-color: var(--bg-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  position: relative;
}
.quote-mark {
  color: var(--brand-bordeaux-tint);
  font-size: calc(1.6rem * var(--content-scale, 1));
  margin-bottom: 0.5rem;
}
.quote-text {
  font-family: var(--font-serif);
  font-size: calc(0.98rem * var(--content-scale, 1));
  font-style: italic;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 0.75rem;
}
.quote-author {
  font-size: calc(0.78rem * var(--content-scale, 1));
  font-weight: 600;
  color: var(--text-muted);
}

/* ═══════════════════════════════════════════════════════
   C1 — ACTIVITÉ 1 (NIVEAUX ET CARACTÉRISTIQUES)
═══════════════════════════════════════════════════════ */
.activity-box {
  background-color: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-sm);
}

.activity-step-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: calc(0.92rem * var(--content-scale, 1));
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}
.step-num {
  background-color: var(--brand-bordeaux);
  color: #ffffff;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: calc(0.75rem * var(--content-scale, 1));
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.activity1-grid {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 2rem;
}
@media (max-width: 960px) {
  .activity1-grid {
    grid-template-columns: 1fr;
  }
}

.column-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}
.column-header h3 {
  font-size: calc(1.05rem * var(--content-scale, 1));
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.column-header h3 i {
  color: var(--brand-bordeaux);
}
.counter-badge {
  font-size: calc(0.75rem * var(--content-scale, 1));
  font-weight: 700;
  background-color: var(--bg-subtle);
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  color: var(--text-secondary);
}
.helper-text {
  font-size: calc(0.85rem * var(--content-scale, 1));
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.measures-draggable-list {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  max-height: 540px;
  overflow-y: auto;
  padding-right: 0.35rem;
}

.measure-chip {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  background-color: var(--bg-white);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 0.7rem 0.9rem;
  font-size: calc(0.88rem * var(--content-scale, 1));
  color: var(--text-primary);
  cursor: grab;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-subtle);
  user-select: none;
}
.measure-chip:hover {
  border-color: var(--brand-bordeaux);
  background-color: var(--brand-bordeaux-pale);
  transform: translateX(3px);
  box-shadow: var(--shadow-sm);
}
.measure-chip.placed {
  opacity: 0.45;
  border-style: dashed;
  cursor: default;
}
.chip-num {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background-color: var(--brand-bordeaux-pale);
  color: var(--brand-bordeaux);
  font-size: calc(0.72rem * var(--content-scale, 1));
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.chip-emoji {
  font-size: calc(1.1rem * var(--content-scale, 1));
}
.chip-text {
  line-height: 1.35;
  font-weight: 500;
}

/* Zones de dépôt */
.zones-container {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.drop-target-zone {
  background-color: var(--bg-light);
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-fast);
}
.drop-target-zone.drag-over {
  border-color: var(--brand-bordeaux);
  background-color: var(--brand-bordeaux-pale);
}

.zone-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background-color: var(--bg-subtle);
  border-bottom: 1px solid var(--border-light);
}
.zone-title {
  display: flex;
  flex-direction: column;
}
.zone-title strong {
  font-size: calc(0.9rem * var(--content-scale, 1));
  color: var(--text-primary);
}
.zone-title span {
  font-size: calc(0.75rem * var(--content-scale, 1));
  color: var(--text-muted);
}
.zone-count {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--bg-white);
  border: 1px solid var(--border-medium);
  font-size: calc(0.75rem * var(--content-scale, 1));
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}

.zone-drop-content {
  padding: 0.75rem;
  min-height: 70px;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: flex-start;
}

.dropped-chip {
  background-color: var(--bg-white);
  border: 1px solid var(--border-medium);
  border-radius: 999px;
  padding: 0.35rem 0.8rem;
  font-size: calc(0.82rem * var(--content-scale, 1));
  font-weight: 600;
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  box-shadow: var(--shadow-subtle);
}
.dropped-chip .remove-chip {
  cursor: pointer;
  color: var(--text-muted);
  font-size: calc(0.75rem * var(--content-scale, 1));
  margin-left: 0.2rem;
}
.dropped-chip .remove-chip:hover {
  color: #dc2626;
}

/* Grille des 12 caractéristiques */
.charac-measure-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1.25rem;
}
.charac-measure-btn {
  background-color: var(--bg-light);
  border: 1px solid var(--border-medium);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  font-size: calc(0.82rem * var(--content-scale, 1));
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.charac-measure-btn.active {
  background-color: var(--brand-bordeaux);
  color: #ffffff;
  border-color: var(--brand-bordeaux);
}

.charac-grid-modern {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.65rem;
}
.charac-checkbox {
  background-color: var(--bg-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: calc(0.85rem * var(--content-scale, 1));
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}
.charac-checkbox:hover {
  background-color: var(--brand-bordeaux-pale);
  border-color: var(--brand-bordeaux-light);
}
.charac-checkbox.checked {
  background-color: var(--brand-bordeaux-pale);
  border-color: var(--brand-bordeaux);
  color: var(--brand-bordeaux);
}

/* Discussion guidée */
.guided-discussion-wrapper {
  margin-top: 2rem;
  background-color: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}
.discussion-banner-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: calc(1.1rem * var(--content-scale, 1));
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}
.discussion-banner-title i {
  color: var(--brand-bordeaux);
}

.discussion-cards-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}
.discussion-item {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--bg-light);
}
.discussion-q-header {
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  cursor: pointer;
  background-color: var(--bg-white);
}
.q-index {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  background-color: var(--brand-bordeaux-pale);
  color: var(--brand-bordeaux);
  font-size: calc(0.78rem * var(--content-scale, 1));
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.discussion-q-header h4 {
  font-size: calc(0.95rem * var(--content-scale, 1));
  font-weight: 700;
  color: var(--text-primary);
  flex: 1;
}
.accordion-toggle {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: calc(0.85rem * var(--content-scale, 1));
  cursor: pointer;
  transition: transform var(--transition-fast);
}
.accordion-toggle.open {
  transform: rotate(180deg);
}

.discussion-a-body {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border-light);
  font-size: calc(0.92rem * var(--content-scale, 1));
  color: var(--text-secondary);
  line-height: 1.6;
  background-color: var(--bg-light);
}

/* ═══════════════════════════════════════════════════════
   C2 — ACTIVITÉ 2 (BUILDER & EXPORT ELLIPSES FOND BLANC)
═══════════════════════════════════════════════════════ */
.builder-layout-modern {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 2rem;
  align-items: start;
}
@media (max-width: 1024px) {
  .builder-layout-modern {
    grid-template-columns: 1fr;
  }
}

.builder-editor-card {
  background-color: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.editor-section {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}
.editor-step-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: calc(0.95rem * var(--content-scale, 1));
  color: var(--text-primary);
}

.actor-options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
}
.actor-choice-btn {
  padding: 0.6rem 0.8rem;
  background-color: var(--bg-light);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  font-size: calc(0.85rem * var(--content-scale, 1));
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
}
.actor-choice-btn:hover {
  background-color: var(--brand-bordeaux-pale);
  border-color: var(--brand-bordeaux-light);
  color: var(--brand-bordeaux);
}
.actor-choice-btn.active {
  background-color: var(--brand-bordeaux);
  color: #ffffff;
  border-color: var(--brand-bordeaux);
}

.custom-actor-row {
  display: flex;
  gap: 0.5rem;
}
.custom-actor-row input {
  flex: 1;
  padding: 0.5rem 0.8rem;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  font-size: calc(0.85rem * var(--content-scale, 1));
  font-family: inherit;
  outline: none;
}
.custom-actor-row input:focus {
  border-color: var(--brand-bordeaux);
}

/* Onglets de niveau dans le constructeur */
.level-tab-switch {
  display: flex;
  border-bottom: 1px solid var(--border-medium);
}
.level-tab-btn {
  padding: 0.5rem 1rem;
  background: none;
  border: none;
  font-size: calc(0.88rem * var(--content-scale, 1));
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.level-tab-btn.active {
  color: var(--brand-bordeaux);
  border-bottom-color: var(--brand-bordeaux);
}

.tab-content {
  display: none;
  flex-direction: column;
  gap: 0.75rem;
  padding-top: 0.75rem;
}
.tab-content.active {
  display: flex;
}
.tab-help {
  font-size: calc(0.82rem * var(--content-scale, 1));
  color: var(--text-muted);
}

.quick-tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}
.quick-tag {
  background-color: var(--bg-light);
  border: 1px solid var(--border-light);
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  font-size: calc(0.75rem * var(--content-scale, 1));
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
}
.quick-tag:hover {
  background-color: var(--brand-bordeaux-pale);
  color: var(--brand-bordeaux);
  border-color: var(--brand-bordeaux-light);
}

.item-input-group {
  display: flex;
  gap: 0.4rem;
}
.item-input-group input {
  flex: 1;
  padding: 0.5rem 0.8rem;
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  font-size: calc(0.85rem * var(--content-scale, 1));
  font-family: inherit;
  outline: none;
}
.item-input-group input:focus {
  border-color: var(--brand-bordeaux);
}
.btn-add-item {
  width: 36px;
  height: 36px;
  background-color: var(--brand-bordeaux);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.current-items-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  min-height: 32px;
}
.item-chip {
  background-color: var(--brand-bordeaux-pale);
  border: 1px solid var(--brand-bordeaux-tint);
  color: var(--brand-bordeaux);
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  font-size: calc(0.78rem * var(--content-scale, 1));
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}
.item-chip .del-item {
  cursor: pointer;
  opacity: 0.7;
}
.item-chip .del-item:hover {
  opacity: 1;
}

.export-btns-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
}

/* Aperçu graphique SVG à droite */
.builder-preview-card {
  background-color: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 90px;
}

.preview-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.85rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border-light);
}
.preview-card-header .header-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: calc(0.95rem * var(--content-scale, 1));
  font-weight: 700;
  color: var(--text-primary);
}
.preview-card-header .header-title i {
  color: var(--brand-bordeaux);
}
.clean-badge {
  font-size: calc(0.72rem * var(--content-scale, 1));
  font-weight: 700;
  background-color: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
}

.builder-canvas-wrapper {
  background-color: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 0.5rem;
  box-shadow: var(--shadow-subtle);
}

.preview-caption-footer {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-top: 1rem;
  font-size: calc(0.8rem * var(--content-scale, 1));
  color: var(--text-muted);
}
.preview-caption-footer i {
  color: #10b981;
  margin-top: 2px;
}

/* ═══════════════════════════════════════════════════════
     D — LE POSITIONNEMENT DE L'ERGONOME (3 TIERS)
═══════════════════════════════════════════════════════ */
.ergo-tiers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}
@media (max-width: 960px) {
  .ergo-tiers-grid {
    grid-template-columns: 1fr;
  }
}

.ergo-tier-card {
  background-color: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.ergo-tier-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.ergo-tier-card.featured-tier {
  border-color: var(--brand-bordeaux-mid);
  box-shadow: 0 4px 16px rgba(138, 21, 56, 0.08);
}

.tier-accent-line {
  height: 4px;
  background-color: var(--border-strong);
}
.tier-accent-line.featured-line {
  background-color: var(--brand-bordeaux);
}

.tier-card-header {
  padding: 1.75rem 1.5rem 1rem 1.5rem;
}
.tier-badge {
  font-size: calc(0.72rem * var(--content-scale, 1));
  font-weight: 800;
  text-transform: uppercase;
  color: var(--text-muted);
  background-color: var(--bg-subtle);
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  display: inline-block;
  margin-bottom: 0.6rem;
}
.badge-crimson {
  background-color: var(--brand-bordeaux-pale);
  color: var(--brand-bordeaux);
}
.badge-featured-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.star-badge {
  font-size: calc(0.72rem * var(--content-scale, 1));
  font-weight: 700;
  color: var(--brand-bordeaux);
}

.tier-card-header h3 {
  font-size: calc(1.25rem * var(--content-scale, 1));
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}
.tier-role {
  font-size: calc(0.85rem * var(--content-scale, 1));
  font-weight: 600;
  color: var(--brand-bordeaux);
}

.tier-card-body {
  padding: 0 1.5rem 1.5rem 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.tier-actions-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}
.tier-actions-list li {
  font-size: calc(0.88rem * var(--content-scale, 1));
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  line-height: 1.5;
}
.tier-actions-list li i {
  color: var(--brand-bordeaux);
  font-size: calc(0.78rem * var(--content-scale, 1));
  margin-top: 4px;
  flex-shrink: 0;
}

.tier-example-box {
  background-color: var(--bg-light);
  border-left: 2px solid var(--brand-bordeaux);
  padding: 0.85rem 1rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.ex-label {
  font-size: calc(0.72rem * var(--content-scale, 1));
  font-weight: 800;
  text-transform: uppercase;
  color: var(--brand-bordeaux);
  display: block;
  margin-bottom: 0.25rem;
}
.tier-example-box p {
  font-size: calc(0.82rem * var(--content-scale, 1));
  color: var(--text-secondary);
  line-height: 1.5;
}

.tier-card-footer {
  padding: 1rem 1.5rem;
  background-color: var(--bg-light);
  border-top: 1px solid var(--border-light);
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}
.footer-tag {
  font-size: calc(0.72rem * var(--content-scale, 1));
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background-color: var(--bg-white);
  border: 1px solid var(--border-medium);
  color: var(--text-muted);
}

/* Carte de transition méthodologique */
.transition-synthesis-card {
  background-color: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-sm);
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 2rem;
  align-items: center;
}
@media (max-width: 860px) {
  .transition-synthesis-card {
    grid-template-columns: 1fr;
  }
}

.synthesis-tag {
  font-size: calc(0.75rem * var(--content-scale, 1));
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--brand-bordeaux);
  margin-bottom: 0.5rem;
}
.synthesis-left h3 {
  font-size: calc(1.35rem * var(--content-scale, 1));
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}
.synthesis-left p {
  font-size: calc(0.95rem * var(--content-scale, 1));
  color: var(--text-secondary);
  line-height: 1.6;
}

.next-section-preview {
  background-color: var(--brand-bordeaux-pale);
  border: 1px solid var(--brand-bordeaux-tint);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}
.next-label {
  display: block;
  font-size: calc(0.75rem * var(--content-scale, 1));
  font-weight: 700;
  text-transform: uppercase;
  color: var(--brand-bordeaux);
  margin-bottom: 0.35rem;
}
.next-section-preview strong {
  display: block;
  font-size: calc(1.05rem * var(--content-scale, 1));
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}
.next-section-preview p {
  font-size: calc(0.85rem * var(--content-scale, 1));
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ═══════════════════════════════════════════════════════
   E — RÉVISION & RESSOURCES BIBLIOGRAPHIQUES
═══════════════════════════════════════════════════════ */
.review-tabs-container {
  max-width: 960px;
  margin: 0 auto;
}

.review-nav-tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 2px solid var(--border-light);
  margin-bottom: 2rem;
}
.review-tab-btn {
  padding: 0.75rem 1.25rem;
  background: none;
  border: none;
  font-size: calc(0.92rem * var(--content-scale, 1));
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
}
.review-tab-btn:hover {
  color: var(--brand-bordeaux);
}
.review-tab-btn.active {
  color: var(--brand-bordeaux);
  border-bottom-color: var(--brand-bordeaux);
}

.review-tab-pane {
  display: none;
}
.review-tab-pane.active {
  display: block;
}

/* Cartes bibliographiques */
.references-list-modern {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.reference-entry-card {
  background-color: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-subtle);
  border-left: 3px solid var(--border-strong);
}
.reference-entry-card.primary-ref {
  border-left-color: var(--brand-bordeaux);
}

.ref-badge-top {
  font-size: calc(0.72rem * var(--content-scale, 1));
  font-weight: 800;
  text-transform: uppercase;
  color: var(--brand-bordeaux);
  margin-bottom: 0.45rem;
}
.ref-citation {
  font-size: calc(0.95rem * var(--content-scale, 1));
  color: var(--text-primary);
  line-height: 1.6;
  margin-bottom: 0.85rem;
}
.ref-citation strong {
  color: var(--text-primary);
}
.ref-citation em {
  font-family: var(--font-serif);
}

.ref-meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem;
  font-size: calc(0.8rem * var(--content-scale, 1));
}
.doi-link {
  color: var(--text-muted);
}
.btn-ref-action {
  font-size: calc(0.78rem * var(--content-scale, 1));
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  background-color: var(--bg-light);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.btn-ref-action:hover {
  background-color: var(--brand-bordeaux-pale);
  color: var(--brand-bordeaux);
  border-color: var(--brand-bordeaux-mid);
}

/* Glossaire */
.glossary-columns-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}
@media (max-width: 768px) {
  .glossary-columns-grid {
    grid-template-columns: 1fr;
  }
}
.glossary-card {
  background-color: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.35rem;
  box-shadow: var(--shadow-subtle);
}
.glossary-card h4 {
  font-size: calc(0.98rem * var(--content-scale, 1));
  font-weight: 800;
  color: var(--brand-bordeaux);
  margin-bottom: 0.4rem;
}
.glossary-card p {
  font-size: calc(0.88rem * var(--content-scale, 1));
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Tableau matrice */
.table-responsive-wrapper {
  overflow-x: auto;
  background-color: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
}
.ssos-matrix-table {
  width: 100%;
  border-collapse: collapse;
  font-size: calc(0.88rem * var(--content-scale, 1));
  text-align: left;
}
.ssos-matrix-table th {
  background-color: var(--bg-light);
  padding: 0.85rem 1rem;
  font-weight: 700;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-medium);
}
.ssos-matrix-table td {
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-secondary);
  vertical-align: top;
  line-height: 1.5;
}
.ssos-matrix-table tr:last-child td {
  border-bottom: none;
}

/* ═══════════════════════════════════════════════════════
   FOOTER (Élégant, sobre, blanc & gris)
═══════════════════════════════════════════════════════ */
.site-footer {
  background-color: #fafbfc;
  border-top: 1px solid var(--border-light);
  padding: 4rem 0 3rem 0;
}
.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 3rem;
  flex-wrap: wrap;
}
.footer-left {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  max-width: 480px;
}
.footer-brand-logo {
  height: 44px;
  width: auto;
}
.footer-text p {
  font-size: calc(0.88rem * var(--content-scale, 1));
  color: var(--text-secondary);
  line-height: 1.5;
}
.footer-text .copyright {
  font-size: calc(0.78rem * var(--content-scale, 1));
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.footer-right {
  display: flex;
  gap: 3rem;
}
.footer-links-col {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.footer-links-col .col-title {
  font-size: calc(0.82rem * var(--content-scale, 1));
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}
.footer-links-col a {
  font-size: calc(0.85rem * var(--content-scale, 1));
  color: var(--text-muted);
}
.footer-links-col a:hover {
  color: var(--brand-bordeaux);
}
.active-version-link {
  font-weight: 700;
  color: var(--brand-bordeaux) !important;
}

/* ═══════════════════════════════════════════════════════
   RESPONSIVE DESIGN
═══════════════════════════════════════════════════════ */
@media (max-width: 640px) {
  .section {
    padding: 3.5rem 0;
  }
  .data-card {
    padding: 1.5rem;
  }
  .data-card-number {
    font-size: calc(3.6rem * var(--content-scale, 1));
  }
  .data-card-split-stats {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }
  .actor-options-grid {
    grid-template-columns: 1fr;
  }
  .footer-right {
    flex-direction: column;
    gap: 1.5rem;
  }
}