/* =============================================================
   Gouvernail Consulting — Main stylesheet
   CSS moderne : custom properties, nesting, :has(), @layer
   Pas de framework, pas de build CSS, ~700 lignes auditables.
   ============================================================= */

@layer reset, fonts, base, layout, components, utilities;

/* --- @fonts (auto-hébergées) ---------------------------------
   ⚠️ TODO : DÉPOSER LES 4 FICHIERS .woff2 DANS src/fonts/ AVANT
   DE RÉ-ACTIVER CES @font-face. Instructions : src/fonts/README.md.
   En attendant, le bloc est commenté pour ÉVITER LES 404 :
   les @font-face déclarés font tenter le téléchargement dès qu'un
   texte utilise la font-family + weight correspondant. Le fallback
   défini dans tokens.css (Georgia, system-ui) prend le relais.

   Lorsque les fichiers seront déposés, dé-commenter ce bloc ET les
   <link rel="preload"> dans src/_layout.html. */
/*
@layer fonts {
  @font-face {
    font-family: "Inter";
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url("/fonts/Inter-Regular.woff2") format("woff2");
  }
  @font-face {
    font-family: "Inter";
    font-style: normal;
    font-weight: 500;
    font-display: swap;
    src: url("/fonts/Inter-Medium.woff2") format("woff2");
  }
  @font-face {
    font-family: "Inter";
    font-style: normal;
    font-weight: 600;
    font-display: swap;
    src: url("/fonts/Inter-SemiBold.woff2") format("woff2");
  }
  @font-face {
    font-family: "Playfair Display";
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url("/fonts/PlayfairDisplay-Bold.woff2") format("woff2");
  }
}
*/

/* --- @reset (modern) ----------------------------------------- */
@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  * { margin: 0; padding: 0; }
  html { -webkit-text-size-adjust: 100%; tab-size: 4; scroll-behavior: smooth; }
  body { line-height: var(--leading-normal); -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
  img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
  input, button, textarea, select { font: inherit; color: inherit; }
  button { background: none; border: none; cursor: pointer; }
  a { color: inherit; text-decoration: none; }
  ul, ol { list-style: none; }
  h1, h2, h3, h4, h5, h6 { text-wrap: balance; }
  p { text-wrap: pretty; }
}

/* --- @base --------------------------------------------------- */
@layer base {
  /* Garde-fou global anti scroll horizontal. `overflow-x: clip` est
     préférable à `hidden` car il n'établit pas de bloc de containment
     pour `position: sticky` (la sidebar des pages expertise reste sticky). */
  html { overflow-x: clip; }
  body { overflow-x: clip; }

  /* ====== CSS Grid : fix universel anti-débordement ============
     Par défaut, les enfants d'un grid ont min-width: auto, ce qui
     leur permet de grossir au-delà de leur fraction (1fr) si leur
     contenu (mots longs, SVG, ligne non sécable) le pousse. Résultat :
     les cards débordent leur colonne et écrasent les colonnes voisines
     ou la sidebar. Le fix canonique : min-width: 0 sur tous les enfants
     directs de chaque grid connu du projet. */
  .grid-2 > *, .grid-3 > *, .grid-4 > *,
  .expertise-detail > *,
  .expertises-grid > *, .expertises-grid-3 > *,
  .cases-grid > *,
  .pillars-grid > *,
  .deliverables-grid > *,
  .stack-grid > *,
  .instruments-grid > *,
  .boutique-grid > *,
  .form-grid > *,
  .timeline-steps > *,
  .stats-grid > *,
  .page-hero-inner > *,
  .trajectory-fallback > * { min-width: 0; }

  /* Anti-débordement texte dans les cartes :
     un mot/URL non sécable (Mistral, n8n+Mistral+OVH, URLs) ne doit
     jamais pousser sa carte plus large que sa colonne grid. */
  .card, .card *,
  .value-card, .value-card *,
  .deliverable-card, .deliverable-card *,
  .mission-card-title, .mission-card-text,
  .case-card, .case-card *,
  .expertise-tile, .expertise-tile *,
  .pillar, .pillar * { overflow-wrap: break-word; }

  body {
    font-family: var(--font-sans);
    font-size: var(--size-base);
    color: hsl(var(--fg));
    background: hsl(var(--bg));
    font-feature-settings: "rlig" 1, "calt" 1, "ss01" 1;
  }

  h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 700;
    color: hsl(var(--navy));
    line-height: var(--leading-tight);
  }

  ::selection { background: hsl(var(--electric) / 0.18); color: hsl(var(--navy)); }

  :focus-visible {
    outline: 2px solid hsl(var(--electric));
    outline-offset: 3px;
    border-radius: var(--radius-sm);
  }

  .skip-link {
    position: absolute;
    top: -100px; left: var(--space-4);
    background: hsl(var(--navy)); color: hsl(var(--white));
    padding: var(--space-2) var(--space-4); border-radius: var(--radius-sm);
    z-index: 999;
    transition: top var(--duration);
  }
  .skip-link:focus { top: var(--space-4); }

  /* Bandeau no-JS (s'affiche uniquement quand JS désactivé) */
  .noscript-banner {
    background: hsl(var(--mist));
    border-bottom: 1px solid hsl(var(--fog));
    padding: 0.75rem 1.25rem;
    text-align: center;
    font: 14px/1.4 system-ui, sans-serif;
    color: hsl(var(--slate));
  }
}

/* --- @layout ------------------------------------------------- */
@layer layout {
  .container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-pad);
  }
  .container-narrow {
    width: 100%;
    max-width: var(--container-narrow);
    margin-inline: auto;
    padding-inline: var(--container-pad);
  }
  @media (min-width: 768px) { :where(.container, .container-narrow) { padding-inline: var(--space-8); } }
}

/* --- @components -------------------------------------------- */
@layer components {

  /* ============ Brand ============ */
  .brand {
    display: inline-flex;
    align-items: center;
    line-height: 1;
  }
  .brand {
    gap: var(--space-3);
  }
  /* La marque et le mot ont chacun leur hauteur : le mot porte le nom, c'est
     lui qui doit se lire en premier, donc il est le plus grand des deux. */
  .brand-mark {
    display: block;
    height: 58px;
    width: auto;
  }
  .brand-word {
    display: block;
    height: 54px;
    width: auto;
  }
  @media (max-width: 767px) {
    .brand-mark { height: 42px; }
    .brand-word { height: 39px; }
  }
  /* Très petits écrans : le mot seul, la marque tiendrait de la vignette. */
  @media (max-width: 400px) {
    .brand-mark { display: none; }
    .brand-word { height: 36px; }
  }

  .footer-logo {
    display: block;
    height: 132px;
    width: auto;
    margin-bottom: var(--space-5);
  }

  /* Wordmark textuel — conservé pour les usages hors logo (titres éditoriaux). */
  .brand-word {
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: var(--size-2xl);
    color: hsl(var(--navy));
  }
  .brand-word--white { color: hsl(var(--white)); }
  .brand-ai {
    color: hsl(var(--electric));
    font-style: normal;
  }
  .brand-ai--white { color: hsl(var(--electric-soft)); }
  .brand-tagline {
    margin-top: 4px;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: var(--tracking-widest);
    text-transform: uppercase;
    color: hsl(var(--navy) / 0.8);
  }
  .brand-tagline--white { color: hsl(var(--white) / 0.8); }

  /* ============ Header ============ */
  .site-header {
    position: sticky; top: 0; z-index: 50;
    background: hsl(var(--bg) / 0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid transparent;
    transition: border-color var(--duration), box-shadow var(--duration);
  }
  .site-header.is-scrolled {
    border-bottom-color: hsl(var(--fog));
  }
  .header-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 80px;
  }
  .site-nav {
    display: none;
    align-items: center;
    gap: var(--space-6);
  }
  .nav-list { display: flex; gap: var(--space-1); align-items: center; }
  .nav-list > li { display: flex; align-items: center; }
  .nav-link {
    /* Tous les .nav-link partagent EXACTEMENT la même boîte
       (anchors ET button du dropdown). Sans ça le <button>
       calcule sa baseline différemment d'un <a> et le texte
       atterrit qq pixels plus haut/bas. */
    position: relative;
    display: inline-flex;
    align-items: center;
    height: 40px;            /* hauteur fixe identique pour tous */
    padding: 0 var(--space-4);
    font-size: var(--size-sm);
    font-weight: 500;
    line-height: 1;          /* on neutralise tout effet de line-height */
    color: hsl(var(--navy));
    border-radius: var(--radius-sm);
    transition: color var(--duration);
    /* Reset propre des styles UA quand .nav-link est sur un <button> */
    background: transparent;
    border: 0;
    margin: 0;
    font-family: inherit;
    cursor: pointer;
  }
  .nav-link:hover { color: hsl(var(--electric)); }
  body[data-page="domaines"] .nav-link[data-nav="domaines"],
  body[data-page="approche"] .nav-link[data-nav="approche"],
  body[data-page="a-propos"] .nav-link[data-nav="a-propos"] {
    color: hsl(var(--electric));
  }
  body[data-page="domaines"] .nav-link[data-nav="domaines"]::after,
  body[data-page="approche"] .nav-link[data-nav="approche"]::after,
  body[data-page="a-propos"] .nav-link[data-nav="a-propos"]::after {
    content: ""; position: absolute; left: var(--space-4); right: var(--space-4); bottom: 0;
    height: 1px; background: hsl(var(--electric));
  }
  .nav-toggle {
    display: inline-flex;
    align-items: center; justify-content: center;
    width: 44px; height: 44px;
    border-radius: var(--radius-sm);
    color: hsl(var(--navy));
  }
  .nav-toggle:hover { background: hsl(var(--mist)); }

  /* ============ Nav dropdown (Prestations) ============ */
  .nav-dropdown { position: relative; display: flex; align-items: center; }
  .nav-dropdown-toggle {
    /* La majorité de la boîte vient de .nav-link (hauteur, padding,
       font, baseline). On ajoute juste le gap pour le chevron. */
    gap: 0.4rem;
  }
  .nav-dropdown-toggle:focus-visible {
    outline: 2px solid hsl(var(--electric));
    outline-offset: 2px;
  }
  .nav-dropdown-chevron {
    transition: transform 220ms var(--ease-out-quart);
    opacity: 0.6;
  }
  .nav-dropdown.is-open .nav-dropdown-chevron {
    transform: rotate(180deg);
    opacity: 1;
  }
  .nav-dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(-4px);
    min-width: 320px;
    padding: 0.5rem;
    background: hsl(var(--bg));
    border: 1px solid hsl(var(--fog));
    border-radius: var(--radius);
    box-shadow: var(--shadow-elevated);
    display: flex;
    flex-direction: column;
    gap: 2px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 200ms var(--ease-out-quart),
                transform 200ms var(--ease-out-quart);
    z-index: 60;
  }
  .nav-dropdown-menu[hidden] { display: none; }
  .nav-dropdown.is-open .nav-dropdown-menu {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
  }
  .nav-dropdown-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 0.625rem 0.875rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: hsl(var(--navy));
    transition: background-color 160ms, color 160ms;
  }
  .nav-dropdown-item:hover,
  .nav-dropdown-item:focus-visible {
    background: hsl(var(--mist));
    outline: none;
  }
  .nav-dropdown-item-title {
    font-size: var(--size-sm);
    font-weight: 600;
    color: hsl(var(--navy));
    line-height: 1.3;
  }
  .nav-dropdown-item-desc {
    font-size: 0.75rem;
    color: hsl(var(--slate));
    line-height: 1.35;
  }

  /* Le display: flex l'emporterait sur le [hidden] de la feuille du
     navigateur, laissant le panneau déplié en permanence : il lui faut
     sa propre règle, comme au menu déroulant du bureau. */
  .mobile-nav[hidden] { display: none; }
  .mobile-nav {
    display: flex; flex-direction: column;
    padding: var(--space-6) var(--container-pad);
    background: hsl(var(--bg));
    border-top: 1px solid hsl(var(--fog));
    box-shadow: var(--shadow-elevated);
    gap: var(--space-2);
  }
  .mobile-link {
    padding: var(--space-3) var(--space-4);
    font-size: var(--size-base);
    font-weight: 500;
    color: hsl(var(--navy));
    border-radius: var(--radius-sm);
  }
  .mobile-link:hover { background: hsl(var(--mist)); }
  .mobile-section-title {
    padding: var(--space-3) var(--space-4) 0;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: hsl(var(--electric));
    margin: 0;
  }
  .mobile-link--sub {
    padding-left: calc(var(--space-4) + var(--space-4));
    font-size: var(--size-sm);
  }
  .mobile-cta { margin-top: var(--space-4); }
  @media (min-width: 1024px) {
    .site-nav { display: flex; }
    .nav-toggle { display: none; }
    .mobile-nav { display: none !important; }
  }

  /* ============ Buttons ============ */
  .btn {
    display: inline-flex;
    align-items: center; justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    height: 44px;
    font-size: var(--size-sm);
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: background-color var(--duration), color var(--duration), border-color var(--duration);
    white-space: nowrap;
    cursor: pointer;
  }
  .btn-lg { height: 48px; padding: var(--space-3) var(--space-8); font-size: var(--size-base); }
  .btn-fit { width: fit-content; }
  .btn-primary {
    background: hsl(var(--navy)); color: hsl(var(--white));
  }
  .btn-primary:hover { background: hsl(var(--ink)); }
  .btn-primary svg { transition: transform var(--duration); }
  .btn-primary:hover svg { transform: translateX(2px); }
  .btn-secondary {
    border: 1px solid hsl(var(--navy)); color: hsl(var(--navy));
  }
  .btn-secondary:hover { background: hsl(var(--navy)); color: hsl(var(--white)); }
  .btn-electric {
    background: hsl(var(--electric)); color: hsl(var(--white));
  }
  .btn-electric:hover { background: hsl(226 80% 50%); }
  .btn-outline-white {
    border: 1px solid hsl(var(--white) / 0.4); color: hsl(var(--white));
  }
  .btn-outline-white:hover { background: hsl(var(--white)); color: hsl(var(--navy)); }

  /* ============ Eyebrow ============ */
  .eyebrow {
    display: inline-flex;
    align-items: center; gap: var(--space-2);
    font-size: var(--size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
    color: hsl(var(--slate));
  }
  .eyebrow--on-dark { color: hsl(var(--white) / 0.65); }
  /* Conservé pour compatibilité : les en-têtes sont désormais alignés à gauche. */
  .eyebrow--centered { justify-content: flex-start; }

  /* ============ Hero ============ */
  .hero {
    position: relative;
    overflow: hidden;
    background: radial-gradient(ellipse at top, hsl(222 40% 28%) 0%, hsl(var(--navy)) 60%);
    color: hsl(var(--white));
  }
  .hero-bg {
    position: absolute; inset: 0;
    pointer-events: none;
    opacity: 0.07;
  }
  .hero-glow {
    position: absolute; inset: 0;
    background: radial-gradient(circle at 75% 30%, hsl(var(--electric) / 0.18), transparent 55%);
    pointer-events: none;
  }
  .hero-inner {
    position: relative;
    display: grid; gap: var(--space-12);
    padding-block: var(--space-24);
  }
  .hero-text { display: flex; flex-direction: column; justify-content: center; }
  .hero-title {
    margin-top: var(--space-6);
    font-size: var(--size-display-xl);
    color: hsl(var(--white));
    letter-spacing: var(--tracking-tight);
  }
  .hero-ai {
    position: relative; display: inline-block;
    color: hsl(var(--electric-soft));
  }
  .hero-ai::after {
    content: ""; position: absolute; left: 0; bottom: -8px;
    width: 100%; height: 4px;
    background: hsl(var(--electric-soft) / 0.4);
  }
  .hero-subtitle {
    margin-top: var(--space-7);
    max-width: 36rem;
    font-size: var(--size-lg);
    color: hsl(var(--white) / 0.8);
  }
  .hero-actions {
    display: flex; flex-direction: column; gap: var(--space-3);
    margin-top: var(--space-10);
  }
  .hero-meta {
    display: flex; align-items: center; gap: var(--space-6);
    margin-top: var(--space-12);
    font-size: var(--size-xs);
    color: hsl(var(--white) / 0.5);
  }
  .hero-meta-dot {
    width: 6px; height: 6px;
    border-radius: var(--radius-full);
    background: hsl(var(--electric-soft));
    animation: needle-pulse 3s ease-in-out infinite;
  }
  .hero-compass {
    position: relative;
    display: flex; align-items: center; justify-content: center;
    aspect-ratio: 1 / 1;
    max-width: 520px;
    margin-inline: auto;
  }
  .hero-compass-glow {
    position: absolute; inset: 0;
    border-radius: 50%;
    background: radial-gradient(circle at center, hsl(var(--electric) / 0.25) 0%, transparent 60%);
  }
  @media (min-width: 1024px) {
    .hero-inner { grid-template-columns: 1.15fr 1fr; gap: var(--space-16); padding-block: var(--space-32); }
    .hero-subtitle { font-size: var(--size-xl); }
    .hero-actions { flex-direction: row; align-items: center; }
  }

  /* ============ Page hero (interior pages) ============ */
  .page-hero {
    position: relative; overflow: hidden;
    background: hsl(var(--navy));
    color: hsl(var(--white));
    padding-block: var(--space-16);
  }
  .page-hero-bg {
    position: absolute; right: -8rem; top: -8rem;
    width: 420px; height: 420px;
    opacity: 0.07;
    pointer-events: none;
  }
  .page-hero-inner { position: relative; display: grid; gap: var(--space-6); }
  .page-hero-title {
    max-width: 48rem;
    font-size: var(--size-display-md);
    color: hsl(var(--white));
    letter-spacing: var(--tracking-tight);
  }
  .page-hero-desc {
    max-width: 48rem;
    font-size: var(--size-lg);
    color: hsl(var(--white) / 0.8);
  }

  /* ============ Sections ============ */
  .section { padding-block: var(--space-24); }
  .section-mist { background: hsl(var(--mist)); }
  .section-navy { background: hsl(var(--navy)); color: hsl(var(--white)); }
  .section-header {
    max-width: 44rem;
    margin-bottom: var(--space-12);
  }
  .section-title {
    margin-top: var(--space-3);
    font-size: var(--size-display-md);
    color: hsl(var(--ink));
    letter-spacing: var(--tracking-tight);
  }
  .section-intro {
    margin-top: var(--space-5);
    font-size: var(--size-lg);
    line-height: var(--leading-relaxed);
    color: hsl(var(--slate));
  }
  .section-divider {
    display: flex; align-items: center; gap: var(--space-4);
    max-width: 28rem;
    margin: var(--space-12) auto;
    color: hsl(var(--fog));
  }
  .section-divider::before, .section-divider::after {
    content: ""; flex: 1; height: 1px; background: currentColor;
  }
  .section-divider svg { width: 12px; height: 12px; fill: currentColor; }

  /* ============ Stats banner ============ */
  .stats {
    background: hsl(var(--mist));
    border-block: 1px solid hsl(var(--fog));
    padding-block: var(--space-12);
  }
  .stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
  }
  .stat { display: flex; flex-direction: column; align-items: center; text-align: center; }
  .stat-figure { font-family: var(--font-serif); font-size: var(--size-3xl); font-weight: 700; color: hsl(var(--navy)); }
  .stat-label { margin-top: var(--space-2); max-width: 200px; font-size: var(--size-sm); color: hsl(var(--slate)); }
  @media (min-width: 768px) {
    .stats-grid { grid-template-columns: repeat(4, 1fr); }
    .stat { padding-inline: var(--space-6); }
    .stat:not(:last-child) { border-right: 1px solid hsl(var(--fog)); }
    .stat-figure { font-size: var(--size-4xl); }
  }

  /* ============ Cards ============ */
  .grid-2 { display: grid; gap: var(--space-6); }
  .grid-3 { display: grid; gap: var(--space-8); }
  .grid-4 { display: grid; gap: var(--space-6); }
  @media (min-width: 768px) {
    .grid-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
  }
  @media (min-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(4, 1fr); }
  }

  .card {
    position: relative;
    padding: var(--space-7);
    background: hsl(var(--bg));
    border: 1px solid hsl(var(--fog));
    border-radius: var(--radius-sm);
  }
  .card-interactive:hover {
    border-color: hsl(var(--navy) / 0.35);
  }
  /* Variantes de .card -- patterns extraits des inline styles */
  .card--center { text-align: center; }
  .card--flex-icon { display: flex; gap: 1.25rem; }
  .card-icon--electric {
    background: hsl(var(--electric) / 0.1);
    color: hsl(var(--electric));
  }
  .card-needle {
    position: absolute; top: var(--space-4); right: var(--space-4);
    width: 28px; height: 28px;
    color: hsl(var(--navy) / 0.15);
    transition: color var(--duration-slow);
    pointer-events: none;
  }
  .card-interactive:hover .card-needle { color: hsl(var(--electric) / 0.6); }

  .card-header {
    display: flex; align-items: center; gap: var(--space-4);
    margin-bottom: var(--space-5);
  }
  .card-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 48px; height: 48px;
    background: hsl(var(--navy)); color: hsl(var(--white));
    border-radius: var(--radius-sm);
  }
  .card-icon svg { width: 20px; height: 20px; }
  .card-eyebrow { display: block; font-size: 11px; font-weight: 500; letter-spacing: var(--tracking-widest); text-transform: uppercase; color: hsl(var(--electric)); }
  .card-title { margin-top: var(--space-1); font-family: var(--font-serif); font-size: var(--size-xl); color: hsl(var(--navy)); }
  .card-body { font-size: var(--size-base); color: hsl(var(--slate)); }
  .card-link {
    display: inline-flex; align-items: center; gap: 6px;
    margin-top: var(--space-5);
    font-size: var(--size-sm); font-weight: 500; color: hsl(var(--electric));
    transition: gap var(--duration);
  }
  .card-link:hover { gap: 12px; }

  /* ============ Compass step (timeline numbers) ============ */
  .compass-step {
    position: relative;
    display: inline-flex; align-items: center; justify-content: center;
    width: 72px; height: 72px;
    flex-shrink: 0;
  }
  .compass-step-ring {
    position: absolute; inset: 0;
    color: hsl(var(--navy));
  }
  .compass-step-number {
    position: relative;
    font-family: var(--font-serif);
    font-size: var(--size-2xl);
    font-weight: 700;
    color: hsl(var(--navy));
  }

  /* ============ Timeline (escales) ============ */
  .timeline { position: relative; margin-top: var(--space-16); }
  .timeline-line {
    display: none;
    position: absolute; top: 36px; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent 0%, hsl(var(--electric) / 0.4) 8%, hsl(var(--electric) / 0.4) 92%, transparent 100%);
  }
  .timeline-steps { display: grid; gap: var(--space-12); }
  .timeline-step { position: relative; display: flex; flex-direction: column; align-items: flex-start; }
  .timeline-step-subtitle { margin-top: var(--space-5); font-size: 11px; font-weight: 500; letter-spacing: var(--tracking-widest); text-transform: uppercase; color: hsl(var(--electric)); }
  .timeline-step-title { margin-top: var(--space-1); font-family: var(--font-serif); font-size: var(--size-xl); color: hsl(var(--navy)); }
  .timeline-step-text { margin-top: var(--space-3); font-size: var(--size-sm); color: hsl(var(--slate)); }
  @media (min-width: 768px) {
    .timeline-line { display: block; }
    .timeline-steps { grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }
  }

  /* ============ CTA Section ============ */
  .cta {
    position: relative; overflow: hidden;
    background: hsl(var(--navy));
    color: hsl(var(--white));
  }
  .cta-bg-1, .cta-bg-2 {
    position: absolute; pointer-events: none;
  }
  .cta-bg-1 { right: -8rem; top: -8rem; width: 600px; height: 600px; opacity: 0.06; }
  .cta-bg-2 { left: -10rem; bottom: -10rem; width: 500px; height: 500px; opacity: 0.07; }
  .cta-inner {
    position: relative;
    display: grid; gap: var(--space-10);
    padding-block: var(--space-20);
  }
  .cta-title { margin-top: var(--space-3); font-size: var(--size-display-md); color: hsl(var(--white)); letter-spacing: var(--tracking-tight); }
  .cta-body { margin-top: var(--space-5); max-width: 36rem; font-size: var(--size-lg); line-height: var(--leading-relaxed); color: hsl(var(--white) / 0.8); }
  .cta-actions { display: flex; flex-direction: column; gap: var(--space-3); }
  @media (min-width: 1024px) {
    .cta-inner { grid-template-columns: 1.5fr 1fr; align-items: center; padding-block: var(--space-20); }
    .cta-actions { align-items: flex-end; }
  }

  /* ============ Testimonials carousel ============ */
  .carousel { position: relative; margin-top: var(--space-12); }
  .carousel-viewport { overflow: hidden; }
  .carousel-track { display: flex; transition: transform 500ms var(--ease-out-quart); }
  .carousel-slide { min-width: 100%; padding-inline: var(--space-2); }
  .testimonial {
    max-width: 48rem; margin-inline: auto;
    padding: var(--space-8);
    background: hsl(var(--white));
    border: 1px solid hsl(var(--fog));
    border-radius: var(--radius-sm);
  }
  .testimonial-quote-mark { width: 32px; height: 32px; color: hsl(var(--electric) / 0.4); }
  .testimonial-text { margin-top: var(--space-4); font-family: var(--font-serif); font-size: var(--size-2xl); line-height: var(--leading-snug); color: hsl(var(--navy)); }
  .testimonial-author { margin-top: var(--space-8); display: flex; flex-direction: column; gap: var(--space-1); font-size: var(--size-sm); }
  .testimonial-author-name { font-weight: 500; color: hsl(var(--ink)); }
  .testimonial-author-role { color: hsl(var(--slate)); }
  @media (min-width: 768px) {
    .testimonial { padding: var(--space-12); }
    .testimonial-text { font-size: var(--size-3xl); }
  }
  .carousel-controls {
    display: flex; align-items: center; justify-content: center; gap: var(--space-4);
    margin-top: var(--space-8);
  }
  .carousel-btn {
    display: inline-flex; align-items: center; justify-content: center;
    width: 44px; height: 44px;
    border: 1px solid hsl(var(--navy) / 0.15);
    background: hsl(var(--white)); color: hsl(var(--navy));
    border-radius: var(--radius-full);
    transition: all var(--duration);
  }
  .carousel-btn:hover { border-color: hsl(var(--electric)); color: hsl(var(--electric)); }
  .carousel-dots { display: flex; align-items: center; gap: var(--space-2); }
  .carousel-dot {
    width: 8px; height: 6px;
    background: hsl(var(--navy) / 0.2);
    border-radius: var(--radius-full);
    transition: all var(--duration);
  }
  .carousel-dot.is-active { width: 32px; background: hsl(var(--electric)); }

  /* ============ Forms ============ */
  .form { display: flex; flex-direction: column; gap: var(--space-6); }
  .form-grid { display: grid; gap: var(--space-5); }
  @media (min-width: 640px) { .form-grid { grid-template-columns: repeat(2, 1fr); } }
  .field { display: flex; flex-direction: column; gap: 6px; }
  .field-label {
    font-size: var(--size-xs); font-weight: 500;
    text-transform: uppercase; letter-spacing: var(--tracking-wide);
    color: hsl(var(--navy));
  }
  .field-label .required { color: hsl(var(--electric)); margin-left: 4px; }
  .field-input, .field-select, .field-textarea {
    height: 44px;
    padding-inline: 14px;
    background: hsl(var(--white));
    border: 1px solid hsl(var(--border));
    border-radius: var(--radius-sm);
    font-size: var(--size-sm);
    color: hsl(var(--ink));
    transition: border-color var(--duration), box-shadow var(--duration);
  }
  .field-textarea { min-height: 140px; padding-block: 10px; resize: vertical; }
  .field-input:focus, .field-select:focus, .field-textarea:focus {
    outline: none;
    border-color: hsl(var(--electric));
    box-shadow: 0 0 0 3px hsl(var(--electric) / 0.2);
  }
  .field-error { font-size: var(--size-xs); color: hsl(var(--compass-red)); }
  .form-consent {
    display: flex; align-items: flex-start; gap: var(--space-3);
    padding: var(--space-4);
    background: hsl(var(--mist));
    border: 1px solid hsl(var(--border));
    border-radius: var(--radius);
    font-size: var(--size-xs);
    color: hsl(var(--slate));
  }
  .form-consent input[type="checkbox"] {
    flex-shrink: 0;
    width: 16px; height: 16px;
    accent-color: hsl(var(--navy));
    margin-top: 2px;
  }
  /* Honeypot — invisible aux humains, visible aux bots */
  .field-honeypot {
    position: absolute !important;
    width: 1px !important; height: 1px !important;
    padding: 0 !important; margin: -1px !important;
    overflow: hidden !important; clip: rect(0,0,0,0) !important;
    white-space: nowrap !important; border: 0 !important;
  }
  .form-alert {
    padding: var(--space-4);
    border-radius: var(--radius);
    font-size: var(--size-sm);
  }
  .form-alert-success {
    background: hsl(var(--electric) / 0.06);
    border: 1px solid hsl(var(--electric) / 0.3);
    color: hsl(var(--navy));
  }
  .form-success-title {
    display: block;
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: hsl(var(--navy));
    margin-bottom: 0.5rem;
  }
  .form-alert-error {
    background: hsl(var(--compass-red) / 0.06);
    border: 1px solid hsl(var(--compass-red) / 0.3);
    color: hsl(var(--compass-red));
  }

  /* ============ Team avatar (à-propos) ============
     Hover grayscale → couleur. Conforme à CSP (pas d'inline JS). */
  .team-avatar {
    position: relative;
    width: 11rem; height: 11rem;
    border-radius: 50%;
    background: hsl(var(--navy) / 0.05);
    display: flex; align-items: center; justify-content: center;
    filter: grayscale(1);
    transition: filter var(--duration-slow);
  }
  .team-avatar:hover { filter: grayscale(0); }

  /* ============ Prose (pages Markdown) ============ */
  .prose {
    max-width: var(--container-narrow);
    margin-inline: auto;
    color: hsl(var(--slate));
    font-size: var(--size-lg);
    line-height: var(--leading-relaxed);
  }
  /* Une page qui ouvre directement sur un titre n'a pas à porter la marge
     prévue pour séparer ce titre du texte qui le précède. */
  .prose > h2:first-child { margin-top: 0; }
  .prose h2 {
    margin-top: var(--space-12);
    margin-bottom: var(--space-4);
    font-family: var(--font-serif);
    font-size: var(--size-3xl);
    color: hsl(var(--navy));
  }
  .prose h3 {
    margin-top: var(--space-10);
    margin-bottom: var(--space-3);
    font-family: var(--font-serif);
    font-size: var(--size-xl);
    color: hsl(var(--navy));
  }
  .prose p { margin-bottom: var(--space-4); }
  .prose strong { color: hsl(var(--ink)); font-weight: 600; }
  .prose a { color: hsl(var(--electric)); text-decoration: underline; text-underline-offset: 3px; }
  .prose ul, .prose ol { margin: var(--space-4) 0; padding-left: var(--space-6); }
  .prose ul li { list-style: disc; margin-bottom: var(--space-2); }
  .prose ol li { list-style: decimal; margin-bottom: var(--space-2); }
  .prose blockquote {
    margin: var(--space-6) 0;
    padding-left: var(--space-6);
    border-left: 3px solid hsl(var(--electric));
    font-family: var(--font-serif);
    font-style: italic;
    color: hsl(var(--navy));
  }
  .prose code {
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
    font-size: 0.9em;
    background: hsl(var(--mist));
    padding: 2px 6px;
    border-radius: var(--radius-sm);
  }

  /* ============ Footer ============ */
  .site-footer {
    position: relative;
    overflow: hidden;
    background: hsl(var(--navy));
    color: hsl(var(--white));
  }
  .footer-decor {
    position: absolute; right: -8rem; top: -8rem;
    width: 520px; height: 520px;
    opacity: 0.05; pointer-events: none;
  }
  .footer-windrose { width: 100%; height: 100%; color: hsl(var(--white)); }
  .footer-inner {
    position: relative;
    display: grid; gap: var(--space-12);
    padding-block: var(--space-16);
  }
  .footer-baseline {
    font-family: var(--font-serif);
    font-style: italic;
    color: hsl(var(--electric-soft) / 0.95);
    margin: 0.75rem 0 0;
    font-size: 0.9rem;
    line-height: 1.4;
  }
  .footer-desc { margin-top: var(--space-6); max-width: 36rem; font-size: var(--size-sm); color: hsl(var(--white) / 0.7); }
  .footer-contact {
    display: flex; flex-wrap: wrap; gap: var(--space-3) var(--space-6);
    margin-top: var(--space-8);
    font-size: var(--size-sm);
  }
  .footer-link {
    display: inline-flex; align-items: center; gap: var(--space-2);
    color: hsl(var(--white) / 0.8);
    transition: color var(--duration);
  }
  a.footer-link:hover { color: hsl(var(--white)); }
  .footer-heading {
    margin-bottom: var(--space-4);
    font-family: var(--font-sans);
    font-size: var(--size-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: var(--tracking-widest);
    color: hsl(var(--white) / 0.7);
  }
  .footer-nav ul { display: flex; flex-direction: column; gap: 10px; }
  .footer-nav a { font-size: var(--size-sm); color: hsl(var(--white) / 0.8); transition: color var(--duration); }
  .footer-nav a:hover { color: hsl(var(--white)); }
  .footer-bottom { position: relative; border-top: 1px solid hsl(var(--white) / 0.1); }
  .footer-bottom-inner {
    display: flex; flex-direction: column; gap: var(--space-3);
    padding-block: var(--space-6);
    font-size: var(--size-xs);
    color: hsl(var(--white) / 0.6);
  }
  .footer-quote { font-family: var(--font-serif); font-style: italic; color: hsl(var(--white) / 0.5); }
  @media (min-width: 768px) {
    .footer-inner { grid-template-columns: 2fr 1fr 1fr; }
  }
  @media (min-width: 768px) {
    .footer-bottom-inner { flex-direction: row; align-items: center; justify-content: space-between; }
  }

  /* ============ Scroll top button (anchor) ============ */
  .scroll-top {
    position: fixed; bottom: var(--space-6); right: var(--space-6);
    z-index: 40;
    display: inline-flex; align-items: center; justify-content: center;
    width: 48px; height: 48px;
    background: hsl(var(--white)); color: hsl(var(--navy));
    border: 1px solid hsl(var(--navy) / 0.15);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-elevated);
    opacity: 0; transform: translateY(8px); pointer-events: none;
    transition: all var(--duration);
  }
  .scroll-top.is-visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
  .scroll-top:hover { color: hsl(var(--electric)); border-color: hsl(var(--electric)); transform: translateY(-2px); }

  /* ============ Page-specific helpers ============ */
  .expertise-detail { display: grid; gap: var(--space-12); }
  /* Empêche les colonnes grid de déborder quand leur contenu (titre, ligne
     non sécable, .card large) est plus large que la fraction allouée.
     Sans ce min-width: 0, le track 2fr peut grossir et "manger" la sidebar. */
  .expertise-detail > * { min-width: 0; }
  @media (min-width: 1024px) {
    .expertise-detail { grid-template-columns: 2fr 1fr; }
    .expertise-sidebar { position: sticky; top: calc(80px + var(--space-8)); align-self: start; }
  }
  .expertise-sidebar-card {
    padding: var(--space-7);
    background: hsl(var(--white));
    border: 1px solid hsl(var(--fog));
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
  }
  .expertise-sidebar-card--dark {
    background: hsl(var(--navy));
    color: hsl(var(--white));
    border: none;
  }
}

/* --- @utilities --------------------------------------------- */
@layer utilities {
  .text-center { text-align: center; }
  .text-balance { text-wrap: balance; }
  .text-pretty { text-wrap: pretty; }
  .sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
  }
  .mt-0 { margin-top: 0 !important; }
  .mt-4 { margin-top: var(--space-4); }
  .mt-6 { margin-top: var(--space-6); }
  .mt-8 { margin-top: var(--space-8); }
  .mt-12 { margin-top: var(--space-12); }
  .gap-3 { gap: var(--space-3); }
  .gap-4 { gap: var(--space-4); }
  .gap-6 { gap: var(--space-6); }
}

/* --- Animations --------------------------------------------- */
@keyframes needle-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}
@keyframes compass-rotate {
  to { transform: rotate(360deg); }
}
@keyframes fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-fade-up { animation: fade-up 0.6s var(--ease-out-quart) forwards; }
.animate-compass-rotate { animation: compass-rotate 60s linear infinite; transform-origin: center; }

/* --- No-JS fallback --------------------------------------------
   Recommandation Ascense : "Contenu lisible sans JavaScript".
   Tous les éléments [data-reveal] sont initialisés à opacity:0 et
   révélés par IntersectionObserver. Sans JS, ils resteraient
   invisibles. On les force à visible si le scripting est désactivé.
   La règle :not(.no-js) protège la classe ajoutée tôt par <head>. */
@media (scripting: none) {
  [data-reveal],
  [data-page="home"] [data-reveal],
  [data-page="home"] .pillar,
  [data-page="home"] .case-card,
  [data-page="home"] .stack-category,
  [data-page="home"] .expertise-tile,
  [data-page="home"] .trajectory-port {
    opacity: 1 !important;
    transform: none !important;
  }
  [data-page="home"] #trajectory-path {
    stroke-dashoffset: 0 !important;
  }
  /* Compteurs animés : afficher la valeur cible directement */
  [data-page="home"] [data-instrument] [data-value]::after {
    content: attr(data-target);
  }
}
.no-js [data-reveal],
.no-js [data-page="home"] [data-reveal],
.no-js [data-page="home"] .pillar,
.no-js [data-page="home"] .case-card,
.no-js [data-page="home"] .stack-category,
.no-js [data-page="home"] .expertise-tile,
.no-js [data-page="home"] .trajectory-port {
  opacity: 1 !important;
  transform: none !important;
}