/* ==========================================================================
   ÉducHTech — Système de design 2026
   Conforme à la charte graphique officielle (voir PlanIa/CharteGraphique.md).
   Palette bleu/rouge sur fond clair, typographie Poppins.
   ========================================================================== */

:root {
  /* ---- Palette de marque ---- */
  --nuit:        #06103d;
  --rouge:       #e41c23;
  --bleu-fonce:  #14447c;
  --indigo:      #4c6cf0;
  --cyan:        #049bdb;
  --bleu-clair:  #5cace4;
  --bleu-pale:   #a4ccec;
  --blanc-casse: #f9fafb;

  --font-sans: 'Poppins', 'Segoe UI', Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  /* ---- Surfaces ---- */
  --bg-primary: var(--blanc-casse);
  --bg-secondary: #eef2f8;
  --bg-card: #ffffff;
  --bg-card-hover: #f4f8fd;
  --bg-glass: rgba(255, 255, 255, 0.75);

  --border-color: rgba(6, 16, 61, 0.12);
  --border-strong: rgba(6, 16, 61, 0.22);
  --border-highlight: rgba(4, 155, 219, 0.45);

  --text-primary: var(--nuit);
  --text-secondary: #4a5878;
  --text-muted: #7c88a6;

  /* ---- Alias sémantiques ----
     Conservés pour les styles en ligne déjà présents dans les pages.
     La charte n'a ni vert ni orange : ils pointent vers des bleus. */
  --accent-cyan: var(--cyan);
  --accent-cyan-glow: rgba(4, 155, 219, 0.28);
  --accent-orange: var(--rouge);
  --accent-orange-glow: rgba(228, 28, 35, 0.22);
  --accent-green: var(--cyan);
  --accent-purple: var(--indigo);
  --accent-red: var(--rouge);

  --shadow-sm: 0 1px 3px rgba(6, 16, 61, 0.07);
  --shadow-lg: 0 12px 32px rgba(6, 16, 61, 0.12);
  --shadow-glow: 0 0 24px var(--accent-cyan-glow);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  scroll-behavior: smooth;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-image:
    radial-gradient(circle at 15% 10%, rgba(4, 155, 219, 0.07) 0%, transparent 42%),
    radial-gradient(circle at 85% 55%, rgba(76, 108, 240, 0.06) 0%, transparent 45%);
}

a {
  color: var(--cyan);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover { color: var(--bleu-fonce); }

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ==========================================================================
   Typographie et utilitaires
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  color: var(--nuit);
  font-weight: 700;
  line-height: 1.25;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.text-gradient {
  background: linear-gradient(135deg, var(--bleu-fonce) 0%, var(--cyan) 55%, var(--indigo) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-orange {
  background: linear-gradient(135deg, var(--rouge) 0%, #a91319 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(4, 155, 219, 0.12);
  color: var(--bleu-fonce);
  border: 1px solid var(--border-highlight);
}

.badge-orange {
  background: rgba(228, 28, 35, 0.10);
  color: var(--rouge);
  border-color: rgba(228, 28, 35, 0.35);
}

.badge-green {
  background: rgba(76, 108, 240, 0.10);
  color: var(--indigo);
  border-color: rgba(76, 108, 240, 0.35);
}

/* ==========================================================================
   En-tête et navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(249, 250, 251, 0.9);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  height: 76px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 0 0 auto;   /* le logo ne se comprime pas contre le menu */
}

.logo-img {
  height: 44px;
  width: auto;
  object-fit: contain;
}

.nav-menu {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1.5rem;
  list-style: none;
  height: 100%;
}

.nav-menu > li {
  white-space: nowrap;
  display: flex;
  align-items: center;
  height: 100%;
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition-fast);
  padding: 0.5rem 0;
  display: inline-flex;
  align-items: center;
}

.nav-link:hover, .nav-link.active { color: var(--bleu-fonce); }

.nav-item-dropdown {
  position: relative;
  padding: 0.5rem 0;
  display: flex;
  align-items: center;
}

.nav-dropdown-menu {
  display: none;
  flex-direction: column;
  gap: 0.25rem;
  position: absolute;
  top: calc(100% + 0.15rem);
  left: 0;
  min-width: 220px;
  margin-top: 0;
  padding: 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  z-index: 50;
}

.nav-item-dropdown:hover .nav-dropdown-menu,
.nav-item-dropdown:focus-within .nav-dropdown-menu,
.nav-item-dropdown.open .nav-dropdown-menu {
  display: flex;
}

.nav-dropdown-menu a {
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
}

.nav-dropdown-menu a:hover {
  background: var(--bg-secondary);
  color: var(--bleu-fonce);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.35rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--cyan) 0%, var(--bleu-fonce) 100%);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(4, 155, 219, 0.28);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--bleu-clair) 0%, var(--cyan) 100%);
  box-shadow: 0 6px 20px rgba(4, 155, 219, 0.38);
  transform: translateY(-2px);
  color: #ffffff;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--bleu-fonce);
  border: 1px solid var(--border-strong);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--cyan);
  transform: translateY(-2px);
  color: var(--bleu-fonce);
}

.btn-orange {
  background: linear-gradient(135deg, var(--rouge) 0%, #b3141a 100%);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(228, 28, 35, 0.28);
}

.btn-orange:hover {
  background: linear-gradient(135deg, #f5333a 0%, var(--rouge) 100%);
  box-shadow: 0 6px 20px rgba(228, 28, 35, 0.38);
  transform: translateY(-2px);
  color: #ffffff;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--nuit);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero-section {
  padding: 5rem 0 4rem;
  position: relative;
  text-align: center;
}

.hero-content {
  max-width: 860px;
  margin: 0 auto;
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  margin: 1.5rem 0;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 2.5rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

/* ============================================================================
   Page Les Dragons
   ============================================================================ */
.dragons-hero {
  background: linear-gradient(135deg, rgba(4, 155, 219, 0.08), rgba(228, 28, 35, 0.06));
  border-bottom: 1px solid var(--border-color);
}

.event-list {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 3rem;
}

.event-list span {
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 0.9rem;
  box-shadow: var(--shadow-sm);
}

.dragons-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.dragons-gallery figure {
  overflow: hidden;
  margin: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.dragons-gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.dragons-gallery figure:hover img { transform: scale(1.04); }

.dragons-gallery figcaption {
  padding: 0.8rem 1rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 600;
}

.season-closing {
  max-width: 760px;
  margin: 2.5rem auto 0;
  color: var(--text-secondary);
  text-align: center;
  font-size: 1.05rem;
}

.dragons-video-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem;
}

.dragons-video-card {
  min-width: 0;
}

.video-frame {
  overflow: hidden;
  aspect-ratio: 16 / 9;
  margin-bottom: 1.25rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--nuit);
  box-shadow: var(--shadow-lg);
}

.video-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

@media (max-width: 760px) {
  .dragons-gallery { grid-template-columns: repeat(2, 1fr); }
  .dragons-video-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .dragons-gallery { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Bloc d'avertissement / page Par et Pour
   ========================================================================== */
.notice-box {
  background: linear-gradient(135deg, rgba(228, 28, 35, 0.06) 0%, rgba(4, 155, 219, 0.06) 100%);
  border: 1px solid rgba(228, 28, 35, 0.22);
  border-radius: var(--radius-lg);
  padding: 2rem 2.25rem;
  box-shadow: var(--shadow-sm);
}

.notice-box h2 {
  margin: 1rem 0 0.75rem;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.notice-box p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.carousel {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  width: min(100%, 760px);
  margin: 2rem auto 0;
}

.carousel-track {
  position: relative;
  flex: 0 0 auto;
  width: min(100%, 430px);
  aspect-ratio: 1080 / 1350;
  max-height: 68vh;
  min-height: 420px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 22px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin: 0 auto;
  display: block;
}

.carousel-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.carousel-slide.active {
  opacity: 1;
  visibility: visible;
}

.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.carousel-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--nuit);
  font-size: 1.4rem;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.carousel-btn:hover {
  background: var(--bg-secondary);
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.carousel-dots {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: none;
  background: rgba(20, 68, 124, 0.25);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.dot.active {
  background: var(--cyan);
  transform: scale(1.15);
}

@media (max-width: 800px) {
  .carousel {
    gap: 0.5rem;
  }

  .carousel-track {
    width: min(100%, 540px);
    max-height: 68vh;
  }

  .carousel-btn {
    width: 40px;
    height: 40px;
    font-size: 1.1rem;
  }
}

/* ==========================================================================
   Chiffres et preuves
   ========================================================================== */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(180px, 1fr));
  gap: 1.5rem;
  margin: 3.5rem 0;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 1.75rem 1.25rem;
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
  width: 100%;
}

.metric-card:nth-child(5) {
  grid-column: 2;
}

.metric-card:nth-child(6) {
  grid-column: 3;
}

@media (max-width: 760px) {
  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .metric-card:nth-child(5),
  .metric-card:nth-child(6) {
    grid-column: auto;
    width: 100%;
  }
}

.metric-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-highlight);
}

.metric-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--cyan);
  margin-bottom: 0.25rem;
}

.metric-label {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ==========================================================================
   En-têtes de section
   ========================================================================== */
.section { padding: 5rem 0; }

.section-alt {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  margin-top: 0.75rem;
  margin-bottom: 1rem;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* ==========================================================================
   Feuille de route
   ========================================================================== */
.phases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  position: relative;
}

.phase-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  position: relative;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.phase-card.active {
  border-color: var(--cyan);
  box-shadow: 0 0 0 1px var(--cyan), var(--shadow-lg);
  background: linear-gradient(180deg, #ffffff 0%, #f2f8fd 100%);
}

.phase-card:hover { transform: translateY(-5px); }

.phase-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.phase-number {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.phase-title {
  font-size: 1.4rem;
  margin-bottom: 0.75rem;
}

.phase-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.phase-features {
  list-style: none;
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.phase-features li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.phase-features li::before {
  content: "✓";
  color: var(--cyan);
  font-weight: bold;
}

/* ==========================================================================
   Cartes et grilles
   ========================================================================== */
.cards-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(260px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.cards-grid-3 .feature-card:nth-child(4) {
  grid-column: 2;
}

.cards-grid-3-centered-last-row .feature-card:nth-child(4) {
  grid-column: 1;
}

.cards-grid-3-centered-last-row .feature-card:nth-child(5) {
  grid-column: 3;
}

@media (max-width: 980px) {
  .cards-grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  }

  .cards-grid-3 .feature-card:nth-child(4) {
    grid-column: auto;
  }

  .cards-grid-3-centered-last-row .feature-card:nth-child(4),
  .cards-grid-3-centered-last-row .feature-card:nth-child(5) {
    grid-column: auto;
  }
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-highlight);
}

.card-icon {
  font-size: 2.25rem;
  margin-bottom: 1.25rem;
  display: inline-block;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.card-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ==========================================================================
   Mise en page en deux colonnes
   ========================================================================== */
.split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.split-image-container {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
}

.split-image-container img {
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.split-image-container:hover img { transform: scale(1.03); }

/* ==========================================================================
   Champs de formulaire
   ========================================================================== */
input, textarea, select {
  font: inherit;
  color: var(--text-primary);
  background: var(--bg-card);
}

input::placeholder, textarea::placeholder { color: var(--text-muted); }

input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 1px;
  border-color: var(--cyan);
}

/* ==========================================================================
   Pied de page
   ========================================================================== */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: var(--text-secondary);
  margin-top: 1rem;
  font-size: 0.9rem;
  max-width: 320px;
}

.footer-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  color: var(--nuit);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover { color: var(--cyan); }

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ==========================================================================
   Navigation mobile
   ========================================================================== */
@media (max-width: 900px) {

  /* Menu principal */
  .nav-menu {
    display: none;
  }

  .nav-menu.open {
    display: flex;
    flex-direction: column;

    position: fixed;
    top: 76px;
    left: 0;
    right: 0;

    width: 100%;
    max-width: 100%;
    height: calc(100dvh - 76px);
    max-height: none;

    margin: 0;
    padding: 0.75rem 1rem 2rem;

    background: var(--bg-card);
    border: none;
    border-top: 1px solid var(--border-color);
    border-radius: 0;
    box-shadow: var(--shadow-lg);

    overflow-y: auto;
    overflow-x: hidden;

    gap: 0;
    z-index: 9999;
  }

  /* Éléments principaux */
  .nav-menu > li {
    width: 100%;
    height: auto;
    display: block;
  }

  .nav-link {
    display: flex;
    align-items: center;
    width: 100%;

    padding: 0.85rem 0.75rem;

    font-size: 1rem;
    font-weight: 600;
  }

  .nav-menu > li + li {
    border-top: 1px solid rgba(6, 16, 61, 0.06);
  }

  .nav-menu > li + li .nav-link {
    border-top: none;
  }

  /* Items avec sous-menu */
  .nav-item-dropdown {
    display: flex;
    flex-direction: column;
    align-items: stretch;

    width: 100%;
    padding: 0;
  }

  /* Sous-menu mobile */
  .nav-dropdown-menu {
    position: static;

    display: none;
    flex-direction: column;

    width: 100%;
    min-width: 0;

    margin: 0 0 0.5rem;
    padding: 0.25rem 0 0.5rem 1rem;

    background: transparent;
    border: none;
    border-left: 2px solid var(--cyan);
    border-radius: 0;
    box-shadow: none;

    gap: 0;
  }

  .nav-item-dropdown.open .nav-dropdown-menu {
    display: flex;
  }

  .nav-dropdown-menu a {
    display: block;
    width: 100%;

    padding: 0.65rem 0.75rem;

    font-size: 0.95rem;
    font-weight: 500;

    border-radius: var(--radius-sm);
  }

  .nav-dropdown-menu a:hover {
    background: var(--bg-secondary);
  }

  /* Bouton hamburger */
  .mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;

    width: 44px;
    height: 44px;

    padding: 0;
    flex: 0 0 44px;

    font-size: 1.6rem;
    line-height: 1;

    border-radius: var(--radius-sm);
  }

  .mobile-toggle:hover {
    background: var(--bg-secondary);
  }

  /* CTA dans le menu */
  .nav-cta {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
    padding: 1rem 0.75rem;
  }

  .nav-cta .btn {
    width: 100%;
  }

  /* Contenu */
  .split-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero-section { padding: 3rem 0; }
}