/* ═══════════════════════════════════════════════════════════════
   GUIDE NATURALISATION 2026 — DESIGN V3 "The Institutional Editorial"
   V3 = V2 + bandeau tricolore épais + dropdown Tests + ton recalé
   ═══════════════════════════════════════════════════════════════ */

/* ─── 1. DESIGN TOKENS ─────────────────────────────────────────── */
:root {
  --primary: #00317d;
  --primary-container: #0046ac;
  --secondary: #bc000a;

  --surface: #fcf9f8;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f6f3f2;
  --surface-container: #efebea;
  --surface-container-high: #ebe8e7;
  --surface-container-highest: #e5e2e1;

  --on-background: #1b1b1c;
  --on-surface: #1b1b1c;
  --on-surface-variant: #4c4a49;
  --on-surface-muted: #767473;
  --outline-variant: rgba(27, 27, 28, 0.15);

  --tricolor-blue: #00317d;
  --tricolor-white: #ffffff;
  --tricolor-red: #bc000a;

  --font-display: 'Newsreader', 'Playfair Display', Georgia, serif;
  --font-body: 'Public Sans', 'Sora', system-ui, -apple-system, sans-serif;

  --text-display-lg: 3.25rem;
  --text-display-md: 2.5rem;
  --text-headline-lg: 2.125rem;
  --text-headline-md: 1.625rem;
  --text-headline-sm: 1.375rem;
  --text-title-lg: 1.25rem;
  --text-title-md: 1.125rem;
  --text-title-sm: 0.875rem;
  --text-body-lg: 1rem;
  --text-body-md: 0.9375rem;
  --text-body-sm: 0.875rem;
  --text-label-md: 0.75rem;
  --text-label-sm: 0.6875rem;

  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;

  --shadow-sm: 0 4px 12px rgba(27, 27, 28, 0.04);
  --shadow-md: 0 12px 28px rgba(27, 27, 28, 0.06);
  --shadow-lg: 0 24px 48px rgba(27, 27, 28, 0.08);

  --container-max: 1180px;
  --container-pad: 1.5rem;
}

/* ─── 2. RESET & BASE ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--text-body-lg);
  line-height: 1.6;
  color: var(--on-background);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
main { min-height: 60vh; }
a { color: var(--primary); text-decoration: none; transition: color 0.15s; }
a:hover { color: var(--primary-container); }
img { max-width: 100%; display: block; }

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

/* ─── 3. BANDEAU TRICOLORE ÉPAIS (V3) ──────────────────────────── */
.tricolor-top {
  height: 8px;
  display: flex;
  width: 100%;
}
.tricolor-top div { flex: 1; }
.tricolor-top div:nth-child(1) { background: var(--tricolor-blue); }
.tricolor-top div:nth-child(2) { background: var(--tricolor-white); }
.tricolor-top div:nth-child(3) { background: var(--tricolor-red); }

/* ─── 4. HEADER ÉDITORIAL ──────────────────────────────────────── */
.hdr-v3 {
  background: rgba(252, 249, 248, 0.92);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--outline-variant);
}

.hdr-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--container-pad);
  max-width: var(--container-max);
  margin: 0 auto;
  gap: var(--space-5);
}

.hdr-logo {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 600;
  font-size: var(--text-title-lg);
  color: var(--primary);
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.hdr-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex: 1;
  justify-content: center;
}

.hdr-nav > a,
.hdr-nav > .hdr-dropdown > button {
  font-family: var(--font-body);
  font-size: var(--text-body-sm);
  font-weight: 500;
  color: var(--on-surface-variant);
  padding: var(--space-2) 0;
  position: relative;
  transition: color 0.15s;
  background: none;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.hdr-nav > a:hover,
.hdr-nav > .hdr-dropdown > button:hover { color: var(--primary); }

.hdr-nav > a.active,
.hdr-nav > .hdr-dropdown.active > button {
  color: var(--primary);
  font-weight: 600;
}

.hdr-nav > a.active::after,
.hdr-nav > .hdr-dropdown.active > button::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--secondary);
  border-radius: 1px;
}

/* Dropdown "Tests" */
.hdr-dropdown { position: relative; }

.hdr-dropdown-caret {
  font-size: 0.65rem;
  opacity: 0.6;
  margin-left: 2px;
}

.hdr-dropdown-menu {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface-container-lowest);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  min-width: 260px;
  display: none;
  z-index: 100;
}

.hdr-dropdown.open .hdr-dropdown-menu { display: block; }

.hdr-dropdown-menu a {
  display: block;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  color: var(--on-surface);
  transition: background 0.15s;
  font-size: var(--text-body-sm);
}

.hdr-dropdown-menu a:hover {
  background: var(--surface-container-low);
  color: var(--primary);
}

.hdr-dropdown-menu a strong {
  display: block;
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--on-surface);
  margin-bottom: 2px;
}

.hdr-dropdown-menu a span.hdr-sub {
  font-size: var(--text-label-md);
  color: var(--on-surface-muted);
  display: block;
}

/* Actions */
.hdr-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.hdr-icon-btn {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--on-surface-variant);
  font-size: 1.1rem;
  transition: background 0.15s, color 0.15s;
  text-decoration: none;
}

.hdr-icon-btn:hover {
  background: var(--surface-container-highest);
  color: var(--primary);
}

.hdr-icon-btn.profile {
  background: linear-gradient(135deg, #a7c5eb, #5b9fd8);
  color: white;
  font-weight: 600;
  font-size: 0.9rem;
}

/* Menu "Plus" (hamburger) */
.hdr-more { position: relative; }

.hdr-more-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--surface-container-lowest);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  min-width: 220px;
  display: none;
  z-index: 100;
}

.hdr-more-menu.open { display: block; }

.hdr-more-menu a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  color: var(--on-surface);
  font-size: var(--text-body-sm);
  transition: background 0.15s;
}

.hdr-more-menu a:hover { background: var(--surface-container-low); }

/* ─── 5. HERO ÉDITORIAL ────────────────────────────────────────── */
.hero-v3 {
  padding: var(--space-8) 0 var(--space-7);
  background: var(--surface);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-7);
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--surface-container-low);
  padding: var(--space-2) var(--space-4);
  border-radius: 99px;
  font-family: var(--font-body);
  font-size: var(--text-label-md);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: var(--space-5);
}

.hero-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--text-display-lg);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--on-surface);
  margin: 0 0 var(--space-5);
}

.hero-title em,
.hero-title .italic {
  font-style: italic;
  font-weight: 500;
  color: var(--primary);
}

.hero-subtitle {
  font-family: var(--font-body);
  font-size: var(--text-body-lg);
  color: var(--on-surface-variant);
  line-height: 1.6;
  margin: 0 0 var(--space-6);
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.hero-visual { position: relative; }

.hero-card {
  background: var(--primary);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  min-height: 340px;
  position: relative;
  overflow: hidden;
  background-image: linear-gradient(135deg, #00317d 0%, #002a6e 60%, #001a4a 100%);
  box-shadow: var(--shadow-lg);
}

.hero-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 300' fill='none' stroke='%23ffffff' stroke-width='0.5' stroke-opacity='0.35'><path d='M200 40 L195 80 L205 80 L200 40 M192 80 L208 80 L212 130 L188 130 Z M184 130 L216 130 L222 220 L178 220 Z'/><path d='M40 240 L80 240 L80 200 L120 200 L120 230 L160 230 L160 215 L180 215 M220 215 L240 215 L240 230 L280 230 L280 210 L320 210 L320 240 L360 240'/><path d='M60 220 L60 240 M70 220 L70 240 M90 220 L90 240 M100 220 L100 240 M130 220 L130 240 M140 220 L140 240 M240 225 L240 240 M250 225 L250 240 M290 225 L290 240 M300 225 L300 240 M330 225 L330 240 M340 225 L340 240'/><circle cx='280' cy='170' r='18' fill='none'/><path d='M262 170 L298 170 M280 152 L280 188'/></svg>");
  background-size: cover;
  background-position: center;
}

.hero-card-tag {
  position: absolute;
  bottom: var(--space-6);
  left: var(--space-6);
  right: var(--space-6);
  background: var(--surface-container-lowest);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-md);
}

.hero-card-tag-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-body-sm);
  font-weight: 700;
  color: var(--on-surface);
  margin-bottom: var(--space-1);
}

.hero-card-tag-text {
  font-size: var(--text-body-sm);
  color: var(--on-surface-variant);
  line-height: 1.5;
}

/* ─── 6. STATS STRIP ───────────────────────────────────────────── */
.stats-strip {
  padding: var(--space-6) 0;
  background: var(--surface-container-low);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
}

.stat-v3 { text-align: center; }

.stat-v3-num {
  font-family: var(--font-display);
  font-size: var(--text-headline-md);
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat-v3-lbl {
  font-family: var(--font-body);
  font-size: var(--text-label-md);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--on-surface-muted);
}

/* ─── 7. SECTIONS ──────────────────────────────────────────────── */
.section-v3 {
  padding: var(--space-8) 0;
  background: var(--surface);
}

.section-v3.alt { background: var(--surface-container-low); }

.section-hd { margin-bottom: var(--space-6); }

.section-hd h2 {
  font-family: var(--font-display);
  font-size: var(--text-headline-lg);
  font-weight: 700;
  color: var(--on-surface);
  margin: 0 0 var(--space-3);
  letter-spacing: -0.015em;
}

.section-hd::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: var(--secondary);
  margin-top: var(--space-3);
  border-radius: 2px;
}

.section-hd p {
  font-family: var(--font-body);
  font-size: var(--text-body-md);
  color: var(--on-surface-variant);
  max-width: 680px;
  margin: var(--space-4) 0 0;
}

.section-hd-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-5);
  flex-wrap: wrap;
  margin-bottom: var(--space-6);
}

/* ─── 8. HUB : 3 GRANDS PARCOURS ───────────────────────────────── */
.hub-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.hub-card {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  min-height: 300px;
}

.hub-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary);
}

.hub-card.hub-civique::before { background: var(--primary); }
.hub-card.hub-tcf::before { background: var(--secondary); }
.hub-card.hub-dossier::before {
  background: linear-gradient(to right,
    var(--tricolor-blue) 0%,
    var(--tricolor-blue) 33%,
    #cccccc 33%,
    #cccccc 66%,
    var(--tricolor-red) 66%);
}

.hub-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.hub-card-eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-label-sm);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--on-surface-muted);
  margin-bottom: var(--space-3);
}

.hub-card.hub-civique .hub-card-eyebrow { color: var(--primary); }
.hub-card.hub-tcf .hub-card-eyebrow { color: var(--secondary); }

.hub-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-headline-sm);
  font-weight: 700;
  color: var(--on-surface);
  margin: 0 0 var(--space-3);
  line-height: 1.2;
}

.hub-card p {
  font-family: var(--font-body);
  font-size: var(--text-body-sm);
  color: var(--on-surface-variant);
  line-height: 1.6;
  margin: 0 0 var(--space-5);
  flex: 1;
}

.hub-card-meta {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
  font-size: var(--text-label-md);
  color: var(--on-surface-muted);
}

.hub-card-meta span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.hub-card-link {
  font-family: var(--font-body);
  font-size: var(--text-body-sm);
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: auto;
}

.hub-card.hub-tcf .hub-card-link { color: var(--secondary); }

.hub-card-badge {
  display: inline-block;
  font-size: var(--text-label-sm);
  font-weight: 700;
  background: var(--surface-container-high);
  color: var(--on-surface-variant);
  padding: 2px 8px;
  border-radius: 99px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-left: var(--space-2);
}

/* ─── 9. NIVEAUX CARDS (CSP/CR/NAT) ────────────────────────────── */
.niveaux-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  align-items: stretch;
}

.niveau-v3 {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
}

.niveau-v3.featured {
  box-shadow: var(--shadow-md);
  transform: translateY(-8px);
  border-top: 3px solid var(--secondary);
}

.niveau-v3:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.niveau-v3.featured:hover {
  transform: translateY(-12px);
  box-shadow: var(--shadow-lg);
}

.niveau-v3-tag {
  font-family: var(--font-body);
  font-size: var(--text-label-sm);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--on-surface-muted);
  margin-bottom: var(--space-3);
}

.niveau-v3.featured .niveau-v3-tag { color: var(--secondary); }

.niveau-v3-title {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-headline-md);
  font-weight: 600;
  color: var(--primary);
  margin: 0 0 var(--space-2);
  line-height: 1.1;
}

.niveau-v3-desc {
  font-family: var(--font-body);
  font-size: var(--text-body-sm);
  color: var(--on-surface-variant);
  line-height: 1.5;
  margin: 0 0 var(--space-5);
}

.niveau-v3-features {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-5);
  flex: 1;
}

.niveau-v3-features li {
  font-family: var(--font-body);
  font-size: var(--text-body-sm);
  color: var(--on-surface);
  padding: var(--space-2) 0 var(--space-2) var(--space-6);
  position: relative;
}

.niveau-v3-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
}

.niveau-v3.featured .niveau-v3-features li::before { background: var(--secondary); }

/* ─── 10. BOUTONS ──────────────────────────────────────────────── */
.btn-v3 {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-body-sm);
  font-weight: 600;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
  line-height: 1;
}

.btn-v3-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-container) 100%);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-v3-primary:hover {
  color: white;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-v3-secondary {
  background: transparent;
  color: var(--primary);
  box-shadow: inset 0 0 0 1px var(--outline-variant);
}

.btn-v3-secondary:hover {
  background: var(--surface-container-low);
  color: var(--primary);
}

.btn-v3-danger {
  background: var(--secondary);
  color: white;
}

.btn-v3-danger:hover {
  background: #a00008;
  color: white;
  transform: translateY(-1px);
}

.btn-v3-lg { padding: var(--space-4) var(--space-6); font-size: var(--text-body-md); }

/* ─── 11. THÉMATIQUES (5 thèmes) ───────────────────────────────── */
.themes-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-4);
}

.theme-v3 {
  background: var(--surface-container-lowest);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s, box-shadow 0.2s;
}

.theme-v3:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
  color: inherit;
}

.theme-v3-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-3);
  color: var(--primary);
  font-size: 1.2rem;
}

.theme-v3 h4 {
  font-family: var(--font-display);
  font-size: var(--text-title-sm);
  font-weight: 700;
  color: var(--on-surface);
  margin: 0 0 var(--space-2);
}

.theme-v3 p {
  font-family: var(--font-body);
  font-size: var(--text-body-sm);
  color: var(--on-surface-variant);
  line-height: 1.5;
  margin: 0;
}

.themes-link-all {
  font-family: var(--font-body);
  font-size: var(--text-body-sm);
  font-weight: 600;
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

/* ─── 12. CTA BLOCK ────────────────────────────────────────────── */
.cta-block {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-container) 100%);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  color: white;
  position: relative;
  overflow: hidden;
}

.cta-block::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(255,255,255,0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(255,255,255,0.06) 0%, transparent 50%);
}

.cta-block > * { position: relative; z-index: 1; }

.cta-block h2 {
  font-family: var(--font-display);
  font-size: var(--text-headline-lg);
  font-weight: 700;
  margin: 0 0 var(--space-4);
  letter-spacing: -0.015em;
}

.cta-block p {
  font-size: var(--text-body-md);
  opacity: 0.85;
  max-width: 620px;
  margin: 0 auto var(--space-6);
  line-height: 1.6;
}

.cta-block .btn-v3 {
  background: white;
  color: var(--primary);
}

.cta-block .btn-v3:hover {
  background: var(--surface-container-low);
  transform: translateY(-2px);
}

/* ─── 13. PLACEHOLDER (page TCF B2 "bientôt") ─────────────────── */
.placeholder-hero {
  padding: var(--space-9) 0;
  background: var(--surface);
  text-align: center;
}

.placeholder-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--surface-container-low);
  padding: var(--space-2) var(--space-4);
  border-radius: 99px;
  font-size: var(--text-label-md);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--secondary);
  margin-bottom: var(--space-5);
}

.placeholder-hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-display-md);
  font-weight: 700;
  color: var(--on-surface);
  margin: 0 0 var(--space-4);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.placeholder-hero h1 em {
  font-style: italic;
  color: var(--primary);
  font-weight: 500;
}

.placeholder-hero p.lead {
  font-family: var(--font-body);
  font-size: var(--text-body-lg);
  color: var(--on-surface-variant);
  max-width: 620px;
  margin: 0 auto var(--space-6);
  line-height: 1.6;
}

.placeholder-panel {
  max-width: 680px;
  margin: 0 auto;
  background: var(--surface-container-lowest);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: left;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.placeholder-panel::before {
  content: '';
  position: absolute;
  left: 0;
  top: var(--space-5);
  bottom: var(--space-5);
  width: 3px;
  background: linear-gradient(to bottom,
    var(--tricolor-blue) 0%,
    var(--tricolor-blue) 33%,
    var(--surface-container) 33%,
    var(--surface-container) 66%,
    var(--tricolor-red) 66%);
  border-radius: 2px;
}

.placeholder-panel h3 {
  font-family: var(--font-display);
  font-size: var(--text-title-lg);
  font-weight: 700;
  color: var(--on-surface);
  margin: 0 0 var(--space-4);
  padding-left: var(--space-4);
}

.placeholder-panel ul {
  margin: 0 0 var(--space-5);
  padding-left: calc(var(--space-4) + 18px);
  color: var(--on-surface-variant);
  font-size: var(--text-body-md);
  line-height: 1.8;
}

.placeholder-panel ul li { margin-bottom: var(--space-2); }

.placeholder-panel .panel-cta {
  padding-left: var(--space-4);
  font-size: var(--text-body-sm);
  color: var(--on-surface-muted);
}

/* ─── 14. FOOTER V3 ────────────────────────────────────────────── */
.footer-v3 {
  background: var(--surface-container-low);
  padding: var(--space-7) 0 var(--space-5);
  margin-top: var(--space-8);
}

.footer-v3-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-7);
  margin-bottom: var(--space-6);
}

.footer-v3-brand {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.footer-v3-logo {
  width: 48px;
  height: 48px;
  background: var(--primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.footer-v3-brand-text h4 {
  font-family: var(--font-display);
  font-size: var(--text-title-md);
  font-weight: 700;
  margin: 0 0 var(--space-1);
  color: var(--on-surface);
}

.footer-v3-brand-text span {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-body-sm);
  color: var(--on-surface-variant);
  display: block;
  margin-bottom: var(--space-3);
}

.footer-v3-brand-text p {
  font-size: var(--text-body-sm);
  color: var(--on-surface-variant);
  line-height: 1.6;
  margin: 0;
  max-width: 360px;
}

.footer-v3 h5 {
  font-family: var(--font-body);
  font-size: var(--text-label-md);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--on-surface-muted);
  margin: 0 0 var(--space-4);
}

.footer-v3 ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-v3 ul li { margin-bottom: var(--space-2); }

.footer-v3 ul a {
  font-size: var(--text-body-sm);
  color: var(--on-surface-variant);
}

.footer-v3 ul a:hover { color: var(--primary); }

.footer-v3-bottom {
  border-top: 1px solid var(--outline-variant);
  padding-top: var(--space-4);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-label-md);
  color: var(--on-surface-muted);
  flex-wrap: wrap;
  gap: var(--space-3);
}


/* ─── 15. RESPONSIVE ───────────────────────────────────────────── */

/* Grille hero page d'accueil */
.hero-home-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: end;
}

/* Photo hero */
.hero-img-photo {
  width: 100%;
  height: 340px;
  object-fit: cover;
  object-position: center 60%;
  border-radius: 12px 12px 0 0;
  display: block;
  position: relative;
  z-index: 1;
}

@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: var(--space-6); }
  .hero-title { font-size: var(--text-display-md); }
  .hub-grid { grid-template-columns: 1fr; }
  .niveaux-grid { grid-template-columns: 1fr; }
  .niveau-v3.featured { transform: none; }
  .themes-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-v3-grid { grid-template-columns: 1fr; gap: var(--space-5); }
  .hdr-nav { display: none; }
  .hero-home-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .hero-img-deco { display: none !important; }
  .hero-img-photo { height: 220px; border-radius: 10px; }
}

@media (max-width: 640px) {
  :root { --container-pad: 1rem; }
  .hero-title { font-size: 2rem; }
  .hero-v3 { padding: var(--space-6) 0 var(--space-5); }
  .section-v3 { padding: var(--space-6) 0; }
  .section-hd h2 { font-size: var(--text-headline-md); }
  .themes-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn-v3 { justify-content: center; }
  .footer-v3-bottom { flex-direction: column; text-align: center; }
  .placeholder-hero h1 { font-size: 2rem; }
  .hero-img-photo { height: 170px; }
}