/* =========================================================
   OptimProject — Direction design : éditorial épuré
   Inspiration : Linear, Stripe, Vercel
   Stack : HTML/CSS/JS statique
   ========================================================= */

:root {
  /* ===== Palette ultra-restreinte ===== */
  --primary: #0A0544;          /* navy, accent unique */
  --primary-2: #141370;
  --accent: #0A0544;            /* on ramène l'accent sur le navy pour la sobriété */
  --accent-soft: #15A4E0;       /* cyan, usage très ponctuel (liens éventuels) */

  --black: #0a0a0a;
  --gray-900: #0f172a;
  --gray-700: #334155;
  --gray-500: #64748b;
  --gray-300: #cbd5e1;
  --gray-200: #e2e8f0;
  --gray-100: #f1f5f9;
  --gray-50:  #f8fafc;
  --white:    #ffffff;

  /* Compat anciens noms */
  --gray-text: var(--gray-500);
  --gray-bg: var(--gray-100);
  --gray-border: var(--gray-200);

  /* ===== Typographie ===== */
  --font-display: "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-heading: "Inter", "Helvetica Neue", Arial, sans-serif;

  /* ===== Métriques ===== */
  --container: 1200px;
  --container-narrow: 780px;
  --radius: 6px;
  --radius-lg: 10px;
  --header-h: 72px;
  --section-y: clamp(56px, 7vw, 96px);
  --transition: all .2s ease;

  /* Pas d'ombre forte — juste hairlines */
  --shadow: none;
  --shadow-lg: 0 1px 0 var(--gray-200);

  /* ===== Compat anciens variables (non utilisés mais évite les surprises) ===== */
  --gradient-cta: var(--primary);
  --gradient-cta-hover: var(--primary-2);
}

/* ========== Reset / base ========== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  color: var(--gray-900);
  background: var(--gray-50);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body.home { background: var(--white); }
img, video { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-2); }
ul { list-style: none; padding: 0; margin: 0; }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--gray-900);
  line-height: 1.05;
  margin: 0 0 .5em;
  font-weight: 600;
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(2rem, 4.8vw, 3.6rem); font-weight: 700; letter-spacing: -0.03em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); letter-spacing: -0.02em; }
h3 { font-size: clamp(1.1rem, 1.4vw, 1.35rem); font-weight: 600; letter-spacing: -0.015em; }
h4 { font-size: 1rem; font-weight: 600; }
p { margin: 0 0 1em; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 32px; }
.container-narrow { max-width: var(--container-narrow); margin: 0 auto; padding: 0 32px; }

section { padding: var(--section-y) 0; }
section.tight { padding: calc(var(--section-y) / 2) 0; }

/* ========== Header / nav ========== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  background: transparent;
  transition: background .25s ease, border-color .25s ease;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled,
.site-header.solid {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom-color: var(--gray-200);
}
.site-header .container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.site-header .logo img { height: 38px; width: auto; }
.site-nav { flex: 1; }
.site-nav ul {
  display: flex;
  gap: 32px;
  justify-content: center;
  flex-wrap: wrap;
}
.site-nav a {
  color: var(--white);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  padding: 6px 2px;
  position: relative;
  letter-spacing: -0.005em;
  transition: color .15s ease;
}
.site-header.scrolled .site-nav a,
.site-header.solid .site-nav a { color: var(--gray-900); }
.site-nav a:hover { color: var(--accent-soft); }
.site-header.scrolled .site-nav a:hover,
.site-header.solid .site-nav a:hover { color: var(--primary); }
.site-nav a.active { color: var(--accent-soft); }
.site-header.scrolled .site-nav a.active,
.site-header.solid .site-nav a.active { color: var(--primary); }
.site-nav a::after { display: none; }

/* Sous-menu */
.has-submenu { position: relative; }
.submenu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 8px 0;
  min-width: 230px;
  opacity: 0;
  visibility: hidden;
  transition: all .18s ease;
  box-shadow: 0 4px 12px rgba(15, 23, 42, .04);
}
.has-submenu:hover .submenu,
.has-submenu:focus-within .submenu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.submenu li { display: block; }
.submenu a {
  display: block;
  padding: 8px 18px;
  color: var(--gray-700) !important;
  font-size: 13.5px;
  text-align: left;
}
.submenu a:hover { background: var(--gray-50); color: var(--primary) !important; }

/* Burger mobile */
.burger {
  display: none;
  background: transparent;
  border: 0;
  width: 40px; height: 40px;
  cursor: pointer;
  padding: 8px;
}
.burger span {
  display: block;
  width: 22px; height: 1.5px;
  background: var(--white);
  margin: 5px auto;
  transition: var(--transition);
}
.site-header.scrolled .burger span,
.site-header.solid .burger span { background: var(--gray-900); }
.burger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========== Boutons CTA ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: -0.005em;
  text-transform: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .15s ease;
  text-decoration: none;
  line-height: 1;
}
.btn:hover { transform: none; }
.btn .star { display: none; }

.btn-primary {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-2);
  border-color: var(--primary-2);
  color: var(--white);
}

.btn-light {
  background: var(--white);
  color: var(--primary);
  border-color: var(--white);
}
.btn-light:hover {
  background: var(--gray-100);
  color: var(--primary);
}

.btn-outline {
  background: transparent;
  border-color: currentColor;
}
.btn-outline:hover { background: rgba(10, 5, 68, .04); }

.btn-ghost {
  background: transparent;
  color: var(--gray-700);
  border-color: var(--gray-300);
}
.btn-ghost:hover {
  border-color: var(--gray-900);
  color: var(--gray-900);
  background: transparent;
}

/* Header CTA : transparent sur hero, devient sombre au scroll */
.header-cta {
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, .6);
}
.header-cta:hover {
  background: var(--white);
  color: var(--primary);
  border-color: var(--white);
}
.site-header.scrolled .header-cta,
.site-header.solid .header-cta {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}
.site-header.scrolled .header-cta:hover,
.site-header.solid .header-cta:hover {
  background: var(--primary-2);
  border-color: var(--primary-2);
  color: var(--white);
}

/* ========== Hero ========== */
.hero {
  position: relative;
  min-height: 78vh;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  text-align: left;
  color: var(--white);
  overflow: hidden;
}
.hero video,
.hero .hero-poster {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  z-index: -2;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,5,68,.55) 0%, rgba(10,5,68,.78) 100%);
  z-index: -1;
}
.hero-content {
  padding: 100px 32px 56px;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
}
.hero-title {
  font-family: var(--font-display);
  text-transform: none;
  font-size: clamp(2.2rem, 5.5vw, 4.2rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  margin: 0 0 18px;
  color: var(--white);
  line-height: 1;
  max-width: 800px;
}
.hero-subtitle {
  font-family: var(--font-body);
  font-size: clamp(1rem, 1.3vw, 1.15rem);
  font-weight: 400;
  margin: 0 0 32px;
  color: rgba(255, 255, 255, .82);
  max-width: 520px;
  letter-spacing: -0.005em;
}

/* ========== Section titles ========== */
.section-title {
  text-align: left;
  margin-bottom: 64px;
  max-width: 720px;
}
.section-title h2 {
  display: block;
  position: relative;
  padding-bottom: 0;
}
.section-title h2::after { display: none; }
.section-title p {
  color: var(--gray-500);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 20px 0 0;
  line-height: 1.55;
  letter-spacing: -0.005em;
}

/* Variante centrée (utilisée parfois) */
.section-title.center,
section[style*="text-align:center"] .section-title { text-align: center; max-width: 720px; margin-left: auto; margin-right: auto; }
.section-title.center p { margin-left: auto; margin-right: auto; }

/* ========== Secteurs (home) — grille de cards éditoriales ========== */
.sectors-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--gray-200);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  counter-reset: sector;
}
.sector {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  padding: 28px 24px;
  background: var(--white);
  border: 0;
  border-radius: 0;
  transition: background .2s ease, transform .25s ease;
  counter-increment: sector;
  position: relative;
}
.sector::before {
  content: counter(sector, decimal-leading-zero);
  font-family: var(--font-body);
  font-feature-settings: "tnum";
  font-variant-numeric: tabular-nums;
  font-size: .72rem;
  color: var(--gray-500);
  font-weight: 600;
  letter-spacing: 0.08em;
  position: absolute;
  top: 16px;
  right: 20px;
}
.sector:hover {
  background: var(--primary);
  padding-left: 24px;
}
.sector:hover::before { color: var(--accent-soft); }
.sector:hover h3 { color: var(--white); }
.sector:hover .sector-icon img { filter: brightness(0) invert(1); }
.sector-icon {
  flex: 0 0 auto;
  width: 44px; height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
}
.sector-icon img {
  width: 100%; height: auto;
  transition: filter .2s ease;
}
.sector h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--gray-900);
  transition: color .2s ease;
  line-height: 1.3;
}

/* ========== KPI / chiffres clés ========== */
.kpis {
  background: var(--primary);
  color: var(--white);
  border-top: 0;
  border-bottom: 0;
}
.kpis .section-title h2 { color: var(--white); }
.kpis .section-title p { color: rgba(255, 255, 255, .65); }
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  text-align: left;
}
.kpi {
  padding: 8px 32px;
  border-left: 1px solid rgba(255, 255, 255, .15);
}
.kpi:first-child { border-left: 0; padding-left: 0; }
.kpi-number {
  font-family: var(--font-heading);
  font-size: clamp(2.8rem, 5.5vw, 5rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  letter-spacing: -0.04em;
  font-feature-settings: "tnum";
  font-variant-numeric: tabular-nums;
}
.kpi-number .unit {
  font-size: .26em;
  font-weight: 600;
  text-transform: lowercase;
  letter-spacing: 0;
  color: var(--accent-soft);
}
.kpi-label {
  margin-top: 14px;
  font-size: .9rem;
  color: rgba(255, 255, 255, .7);
  font-weight: 400;
  letter-spacing: -0.005em;
}

/* ========== Cards génériques ========== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--gray-200);
  border: 1px solid var(--gray-200);
}
.cards-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cards-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--white);
  border: 0;
  border-radius: 0;
  overflow: hidden;
  transition: background .2s ease;
  display: flex;
  flex-direction: column;
}
.card:hover { background: var(--gray-50); transform: none; box-shadow: none; }
.card-media {
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--gray-100);
}
.card-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.card:hover .card-media img { transform: scale(1.03); }
.card-body { padding: 32px; flex: 1; display: flex; flex-direction: column; }
.card-body h3 { margin-bottom: 12px; }
.card-body p { color: var(--gray-500); flex: 1; font-size: .95rem; }

/* Card "service" */
.card-service {
  text-align: left;
  padding: 40px 32px;
}
.card-service .card-icon {
  width: 44px; height: 44px;
  margin: 0 0 24px;
  border-radius: var(--radius);
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
}
.card-service .card-icon img,
.card-service .card-icon svg { width: 22px; height: 22px; color: var(--primary); fill: var(--primary); filter: none; }
.card-service h3 { font-size: 1.15rem; }
.card-service p { color: var(--gray-500); font-size: .95rem; line-height: 1.6; margin: 0; }

/* ========== Équipe ========== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 28px 20px;
  max-width: 1000px;
  margin: 0 auto;
}
.team-card { text-align: center; }
.team-photo {
  width: 120px;
  height: 120px;
  margin: 0 auto 14px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--gray-100);
  border: 0;
  box-shadow: none;
  position: relative;
}
.team-photo::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid transparent;
  transition: border-color .25s ease;
}
.team-photo img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(15%);
  transition: filter .3s ease, transform .35s ease;
}
.team-card:hover .team-photo img {
  filter: grayscale(0%);
  transform: scale(1.05);
}
.team-card:hover .team-photo::after { border-color: var(--accent-soft); }
.team-name {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: .92rem;
  margin: 0 0 2px;
  color: var(--gray-900);
  letter-spacing: -0.01em;
}
.team-role {
  color: var(--gray-500);
  font-size: .8rem;
  margin: 0;
  letter-spacing: -0.005em;
}

/* Card direction */
.directors {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px 32px;
}
.director {
  text-align: left;
  display: grid;
  grid-template-columns: 96px 1fr;
  column-gap: 20px;
  row-gap: 4px;
  align-items: start;
}
.director > .director-photo {
  grid-column: 1;
  grid-row: 1 / span 3;
  width: 96px;
  height: 96px;
  margin: 0;
  border-radius: 50%;
  overflow: hidden;
  background: var(--gray-100);
  border: 0;
  box-shadow: none;
}
.director > h3,
.director > .director-role,
.director > .director-bio { grid-column: 2; margin-left: 0; }
.director > h3 { grid-row: 1; }
.director > .director-role { grid-row: 2; }
.director > .director-bio { grid-row: 3; }
.director-photo img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(15%);
  transition: filter .35s ease;
}
.director:hover .director-photo img { filter: grayscale(0%); }
.director h3 {
  margin: 0 0 4px;
  font-size: 1.05rem;
  letter-spacing: -0.015em;
}
.director-role {
  display: block;
  color: var(--accent-soft);
  font-weight: 600;
  font-size: .72rem;
  margin-bottom: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.director-bio {
  color: var(--gray-700);
  font-size: .88rem;
  line-height: 1.6;
  margin: 0;
}

/* ========== Service detail (page Solutions) — Timeline verticale ========== */
.services-timeline {
  position: relative;
  max-width: 920px;
  margin: 0 auto;
  padding: 8px 0 0 0;
}
.services-timeline::before {
  content: '';
  position: absolute;
  left: 27px;
  top: 24px;
  bottom: 24px;
  width: 2px;
  background: var(--gray-200);
  border-radius: 2px;
}
.services-timeline::after {
  content: '';
  position: absolute;
  left: 27px;
  top: 24px;
  width: 2px;
  height: var(--progress, 0%);
  background: linear-gradient(180deg, var(--primary) 0%, var(--accent-soft) 100%);
  border-radius: 2px;
  transition: height .15s linear;
  z-index: 1;
  max-height: calc(100% - 48px);
}

.service-block {
  position: relative;
  display: block;
  padding: 16px 0 40px 84px;
  border: 0;
}
.service-block:first-of-type { padding-top: 0; }
.service-block:last-child { padding-bottom: 8px; }
.service-block.reverse { /* annule le reverse hérité */ }
.service-block.reverse .service-detail { order: 0; }

/* Le premier <div> du service-block contient le marker, le titre et l'intro */
.service-block > div:first-child {
  position: relative;
  margin-bottom: 20px;
}
.service-num {
  position: absolute;
  left: -84px;
  top: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--gray-300);
  color: var(--gray-500);
  font-family: var(--font-body);
  font-feature-settings: "tnum";
  font-variant-numeric: tabular-nums;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1;
  margin: 0;
  letter-spacing: 0.02em;
  transition: background .35s ease, border-color .35s ease, color .35s ease, transform .35s ease;
  z-index: 2;
}
.service-block.active .service-num,
.service-block:hover .service-num {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
  transform: scale(1.06);
  box-shadow: 0 0 0 6px rgba(10, 5, 68, .08);
}

.service-block h2 {
  font-size: clamp(1.25rem, 2vw, 1.55rem);
  text-transform: none;
  letter-spacing: -0.02em;
  margin: 6px 0 10px;
  line-height: 1.15;
  font-weight: 600;
  color: var(--gray-900);
}
.service-intro {
  color: var(--gray-500);
  font-size: .98rem;
  line-height: 1.55;
  max-width: 640px;
  margin: 0;
}

.service-detail {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  transition: border-color .25s ease, background .25s ease, box-shadow .25s ease;
}
.service-block.active .service-detail,
.service-block:hover .service-detail {
  border-color: var(--primary);
  background: var(--white);
  box-shadow: 0 6px 24px rgba(10, 5, 68, .07);
}
.service-detail h4 {
  font-family: var(--font-heading);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
  margin: 18px 0 10px;
  font-weight: 700;
}
.service-detail h4:first-child { margin-top: 0; }
.service-detail ul {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 4px 24px;
  list-style: none;
  padding: 0;
  margin: 0 0 6px;
}
.service-detail ul.single-col { grid-template-columns: 1fr; }
.service-detail li {
  position: relative;
  padding: 4px 0 4px 18px;
  font-size: .9rem;
  color: var(--gray-700);
  line-height: 1.45;
}
.service-detail li::before {
  content: '';
  position: absolute;
  left: 0; top: 11px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-soft);
  opacity: .85;
}

/* ========== Points forts ========== */
.strengths {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--gray-200);
  border: 1px solid var(--gray-200);
}
.strength {
  padding: 48px 40px;
  background: var(--white);
  border: 0;
  border-radius: 0;
  transition: background .2s ease;
}
.strength:hover {
  background: var(--gray-50);
  transform: none;
  box-shadow: none;
  border: 0;
}
.strength-icon {
  width: 36px; height: 36px;
  border-radius: var(--radius);
  background: transparent;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  margin-bottom: 24px;
}
.strength-icon svg { width: 24px; height: 24px; }
.strength h3 {
  font-size: 1.2rem;
  margin-bottom: 14px;
  font-weight: 600;
  letter-spacing: -0.015em;
}
.strength p {
  color: var(--gray-500);
  font-size: .95rem;
  line-height: 1.65;
  margin: 0;
}

/* ========== Recrutement bandeau ========== */
.recruit {
  background: var(--gray-900);
  color: var(--white);
  padding: clamp(64px, 8vw, 120px) 0;
  text-align: left;
}
.recruit .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
}
.recruit h2 {
  color: var(--white);
  margin: 0;
  font-size: clamp(1.8rem, 3.5vw, 3rem);
  letter-spacing: -0.03em;
}
.recruit p {
  color: rgba(255,255,255,.65);
  max-width: 520px;
  margin: 12px 0 0;
  font-size: 1rem;
}

/* ========== Page bannière intérieure ========== */
.page-banner {
  padding: calc(var(--header-h) + 80px) 0 64px;
  background:
    radial-gradient(circle at 100% 0%, rgba(21, 164, 224, .06), transparent 50%),
    linear-gradient(180deg, var(--white) 0%, var(--gray-50) 100%);
  color: var(--gray-900);
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
  position: relative;
}
.page-banner::before {
  content: '';
  position: absolute;
  bottom: -1px; left: 0;
  width: 80px; height: 3px;
  background: var(--primary);
}
.page-banner h1 {
  color: var(--gray-900);
  margin: 0;
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  letter-spacing: -0.03em;
  line-height: 1;
}
.page-banner p {
  color: var(--gray-500);
  margin-top: 18px;
  font-size: clamp(1rem, 1.3vw, 1.1rem);
  max-width: 620px;
  letter-spacing: -0.005em;
}

/* ========== Project gallery (références) ========== */
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px 24px;
}
.project {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--gray-100);
  cursor: pointer;
  display: block;
}
.project img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .6s cubic-bezier(.2,.8,.2,1), filter .35s ease;
  filter: grayscale(10%);
}
.project:hover img {
  transform: scale(1.04);
  filter: grayscale(0%);
}
.project-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(10,5,68,.88) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  color: var(--white);
}
.project-overlay h3 {
  color: var(--white);
  margin: 0 0 8px;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.015em;
}
.project-meta {
  display: flex;
  gap: 8px;
  font-size: .8rem;
  flex-wrap: wrap;
}
.project-meta .badge {
  display: inline-block;
  background: rgba(255,255,255,.14);
  color: var(--white);
  padding: 4px 10px;
  border-radius: 999px;
  backdrop-filter: blur(6px);
  font-weight: 500;
  letter-spacing: -0.005em;
}

/* ========== Plaquettes ========== */
.plaquettes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
}
.plaquette {
  background: var(--white);
  border-radius: 0;
  padding: 56px 40px;
  text-align: left;
  border: 0;
  border-left: 1px solid var(--gray-200);
  transition: background .2s ease;
}
.plaquette:first-child { border-left: 0; }
.plaquette:hover {
  transform: none;
  box-shadow: none;
  border-color: var(--gray-200);
  background: var(--gray-50);
}
.plaquette-icon {
  width: 40px; height: 40px;
  margin: 0 0 24px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  border-radius: var(--radius);
  background: transparent;
  color: var(--primary);
}
.plaquette-icon svg { width: 28px; height: 28px; }
.plaquette h3 {
  text-transform: none;
  font-size: 1.15rem;
  letter-spacing: -0.015em;
  margin-bottom: 12px;
  font-weight: 600;
}

/* ========== Contact ========== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 96px;
  align-items: start;
}
.contact-info h3 {
  margin-bottom: 28px;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
}
.contact-info ul li {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--gray-200);
  align-items: flex-start;
}
.contact-info ul li:last-child { border-bottom: 0; }
.contact-info .icon {
  flex: 0 0 32px;
  width: 32px; height: 32px;
  background: transparent;
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  color: var(--primary);
}
.contact-info .icon svg { width: 18px; height: 18px; }
.contact-info .label {
  display: block;
  font-size: .78rem;
  color: var(--gray-500);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 500;
}
.contact-info .value {
  font-weight: 500;
  color: var(--gray-900);
  font-size: 1rem;
  letter-spacing: -0.005em;
}

.contact-form {
  background: var(--gray-50);
  padding: 48px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
}
.contact-form h3 {
  margin-bottom: 24px;
  font-size: 1.4rem;
  letter-spacing: -0.02em;
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: .82rem;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--gray-700);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 15px;
  background: var(--white);
  color: var(--gray-900);
  transition: border-color .15s ease, box-shadow .15s ease;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(10, 5, 68, .08);
}
.form-group textarea { min-height: 140px; resize: vertical; }

.map-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: none;
  border: 1px solid var(--gray-200);
  margin-top: 80px;
}
.map-wrap iframe {
  display: block;
  width: 100%;
  height: 460px;
  border: 0;
  filter: grayscale(80%) contrast(105%);
  transition: filter .35s ease;
}
.map-wrap:hover iframe { filter: grayscale(0%); }

/* ========== Footer ========== */
.site-footer {
  background: var(--white);
  color: var(--gray-500);
  padding: 80px 0 32px;
  border-top: 1px solid var(--gray-200);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.site-footer .footer-logo img { height: 48px; width: auto; }
.site-footer .footer-info p {
  margin: 0 0 1em;
  line-height: 1.6;
  font-size: .9rem;
}
.site-footer .footer-info strong {
  font-weight: 500;
  color: var(--gray-500);
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: block;
  margin-bottom: 4px;
}
.site-footer a { color: var(--gray-700); font-weight: 500; }
.site-footer a:hover { color: var(--primary); }
.footer-social {
  display: flex;
  gap: 12px;
  justify-content: flex-start;
  align-items: center;
}
.footer-social a {
  width: 36px; height: 36px;
  border-radius: var(--radius);
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.footer-social a:hover { background: var(--primary); }
.footer-social svg { width: 18px; height: 18px; fill: var(--gray-500); transition: fill .15s ease; }
.footer-social a:hover svg { fill: var(--white); }
.footer-bottom {
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--gray-200);
  text-align: left;
  font-size: .82rem;
  color: var(--gray-500);
  opacity: 1;
}
.footer-legal { margin-left: 6px; }
.footer-legal a { color: var(--gray-500); font-weight: 500; }
.footer-legal a:hover { color: var(--primary); }

/* ========== Pages légales ========== */
.legal { color: var(--gray-text); line-height: 1.8; }
.legal h2 { font-size: 1.25rem; margin: 40px 0 12px; color: var(--gray-900); }
.legal h2:first-of-type { margin-top: 0; }
.legal p { margin: 0 0 16px; }
.legal ul { margin: 0 0 16px; padding-left: 22px; }
.legal li { margin-bottom: 6px; }
.legal a { color: var(--primary); font-weight: 500; }
.legal a:hover { text-decoration: underline; }
.legal .legal-update { margin-top: 40px; font-size: .9rem; color: var(--gray-500); }

/* ========== Animations subtiles ========== */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .7s cubic-bezier(.2,.8,.2,1), transform .7s cubic-bezier(.2,.8,.2,1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== Compat anciens styles inline ========== */
/* Les sections du HTML contiennent encore parfois style="background:var(--gray-bg)"
   On unifie avec gray-100 (déjà géré via la variable). */

/* =========================================================
   Overrides spécifiques à la page d'accueil (body.home)
   Restaure la version "éditoriale épurée" plus généreuse.
   ========================================================= */
body.home {
  --section-y: clamp(80px, 11vw, 144px);
}

/* Hero plus généreux sur la home */
body.home .hero { min-height: 92vh; }
body.home .hero::before {
  background: linear-gradient(180deg, rgba(10,5,68,.35) 0%, rgba(10,5,68,.65) 100%);
}
body.home .hero-content { padding: 140px 32px 80px; }
body.home .hero-title {
  font-size: clamp(2.8rem, 7.5vw, 6rem);
  letter-spacing: -0.04em;
  line-height: 0.98;
  margin-bottom: 24px;
  max-width: 900px;
}
body.home .hero-subtitle {
  font-size: clamp(1.05rem, 1.5vw, 1.3rem);
  margin-bottom: 40px;
  max-width: 580px;
}

/* Section titles plus aérés sur la home */
body.home .section-title { margin-bottom: 64px; max-width: 720px; }
body.home .section-title p { font-size: 1.1rem; }

/* Secteurs : liste numérotée 01..08 pleine largeur (vs grille 4-col) */
body.home .sectors-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  background: transparent;
  border: 0;
  border-top: 1px solid var(--gray-200);
  border-radius: 0;
  overflow: visible;
  counter-reset: sector;
}
body.home .sector {
  display: grid;
  grid-template-columns: 80px 80px 1fr auto;
  flex-direction: row;
  align-items: center;
  gap: 32px;
  padding: 28px 0;
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  border-radius: 0;
  transition: padding-left .25s ease, background .2s ease;
  counter-increment: sector;
  position: relative;
}
body.home .sector::before {
  position: static;
  font-size: .85rem;
  color: var(--gray-500);
  font-weight: 500;
  letter-spacing: 0.05em;
  top: auto; right: auto;
}
body.home .sector:hover {
  background: var(--gray-50);
  padding-left: 16px;
}
body.home .sector:hover h3 { color: var(--gray-900); }
body.home .sector:hover .sector-icon img { filter: none; }
body.home .sector::after {
  content: '→';
  font-size: 1.3rem;
  color: var(--gray-300);
  transition: transform .25s ease, color .25s ease;
}
body.home .sector:hover::after {
  color: var(--primary);
  transform: translateX(4px);
}
body.home .sector-icon {
  flex: 0 0 64px;
  width: 64px; height: 64px;
}
body.home .sector h3 {
  font-size: clamp(1.15rem, 1.8vw, 1.5rem);
  font-weight: 500;
}

/* KPI : blanc géant sur fond blanc avec hairlines (vs navy sur les autres pages) */
body.home .kpis {
  background: var(--white);
  color: var(--gray-900);
  border-top: 1px solid var(--gray-200);
  border-bottom: 1px solid var(--gray-200);
}
body.home .kpis .section-title h2 { color: var(--gray-900); }
body.home .kpis .section-title p { color: var(--gray-500); }
body.home .kpi { border-left-color: var(--gray-200); padding: 16px 32px; }
body.home .kpi:first-child { padding-left: 0; }
body.home .kpi-number {
  font-size: clamp(4rem, 9vw, 8rem);
  color: var(--gray-900);
  letter-spacing: -0.045em;
}
body.home .kpi-number .unit {
  font-size: .22em;
  color: var(--gray-500);
}
body.home .kpi-label {
  margin-top: 16px;
  font-size: .95rem;
  color: var(--gray-500);
}

/* Hero gauche (déjà le cas globalement, on s'assure ici) */
body.home .hero { justify-content: flex-start; text-align: left; }

/* ========== Responsive ========== */
@media (max-width: 1100px) {
  .team-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 1024px) {
  .cards-grid,
  .cards-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(3, 1fr); gap: 32px 20px; }
  .directors { grid-template-columns: 1fr; max-width: 560px; margin: 0 auto; gap: 56px; }
  .project-grid { grid-template-columns: repeat(2, 1fr); }
  .plaquettes { grid-template-columns: 1fr; }
  .plaquette { border-left: 0; border-top: 1px solid var(--gray-200); }
  .plaquette:first-child { border-top: 0; }
  .service-block,
  .service-block.reverse { padding: 16px 0 32px 64px; }
  .service-block.reverse .service-detail { order: 0; }
  .service-num { left: -64px; width: 44px; height: 44px; font-size: .85rem; }
  .services-timeline::before,
  .services-timeline::after { left: 21px; }
  .strengths { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 56px; }
}

@media (max-width: 768px) {
  :root { --header-h: 64px; --section-y: 72px; }
  .container, .container-narrow { padding: 0 20px; }
  .site-header .logo img { height: 32px; }

  .burger { display: block; }
  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 0;
    background: var(--white);
    transform: translateX(100%);
    transition: transform .3s ease;
    padding: 24px;
    overflow-y: auto;
  }
  .site-nav.open { transform: translateX(0); }
  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .site-nav li { border-bottom: 1px solid var(--gray-200); }
  .site-nav a {
    color: var(--gray-900) !important;
    padding: 18px 0;
    display: block;
    font-size: 1rem;
  }
  .submenu {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    box-shadow: none;
    padding: 0 0 8px 16px;
    min-width: 0;
    border: 0;
  }
  .header-cta { display: none; }

  .hero { min-height: 80vh; }
  .hero-content { padding: 120px 20px 64px; }

  .kpi-grid { grid-template-columns: 1fr; }
  .kpi { padding: 24px 0; border-left: 0; border-top: 1px solid var(--gray-200); }
  .kpi:first-child { border-top: 0; padding-top: 0; }

  .cards-grid,
  .cards-grid.cols-2,
  .cards-grid.cols-4 { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: repeat(2, 1fr); gap: 28px 16px; }
  .project-grid { grid-template-columns: 1fr; }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .footer-bottom { text-align: left; }
  .service-detail ul { grid-template-columns: 1fr; }
  .recruit .container { flex-direction: column; align-items: flex-start; }
  .sector { grid-template-columns: 56px 56px 1fr auto; gap: 16px; }
  .sector h3 { font-size: 1.05rem; }
}

@media (max-width: 480px) {
  .team-grid { grid-template-columns: 1fr; }
  .sector { grid-template-columns: 40px 1fr auto; }
  .sector-icon { display: none; }
}

/* =========================================================
   Couleurs page d'accueil — inspiration de la charte historique
   Palette : indigo #273583 · bleu ciel #80B0DF · or #E8C27D
   (scopé body.home pour ne pas impacter les autres pages)
   ========================================================= */
:root {
  --indigo: #273583;
  --sky: #80B0DF;
  --sky-strong: #5b91c9;
  --gold: #E8C27D;
}

/* — Logo un peu plus grand (toutes pages) — */
.site-header .logo img { height: 50px; }

/* — Hero : voile dégradé teinté indigo + sous-titre bleu ciel — */
body.home .hero::before {
  background: linear-gradient(180deg, rgba(39,53,131,.42) 0%, rgba(10,5,68,.80) 100%);
}
body.home .hero-subtitle { color: var(--sky); font-weight: 500; }

/* — Titres de section : barre d'accent colorée — */
body.home .section-title h2 { padding-left: 20px; }
body.home .section-title h2::before {
  content: '';
  position: absolute;
  left: 0; top: .16em;
  width: 5px; height: .8em;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--sky) 0%, var(--indigo) 100%);
}

/* — Secteurs : numéro coloré, icône sur pastille bleu ciel, accents au survol — */
body.home .sector::before { color: var(--sky-strong); font-weight: 600; }
body.home .sector-icon {
  background: rgba(128,176,223,.16);
  border-radius: 12px;
  padding: 12px;
}
body.home .sector:hover {
  background: rgba(128,176,223,.10);
  padding-left: 16px;
}
body.home .sector:hover .sector-icon { background: rgba(39,53,131,.12); }
body.home .sector:hover::after { color: var(--indigo); }

/* — Chiffres clés : fond blanc, chiffres en bleu (rappel du bandeau du bas) — */
body.home .kpis {
  background: var(--white);
  color: var(--gray-900);
  border-top: 0;
  border-bottom: 1px solid var(--gray-200);
  position: relative;
}
/* Ligne dégradée bleue marquant le changement de section */
body.home .kpis::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(105deg, #0A0544 0%, #273583 50%, #2E8FCE 100%);
}
body.home .kpis .section-title h2 { color: var(--gray-900); }
body.home .kpi {
  border-left-color: var(--gray-200);
  border-top-color: var(--gray-200);
}
body.home .kpi-number {
  color: var(--indigo);
  background: linear-gradient(105deg, #273583 0%, #2E8FCE 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
body.home .kpi-number .unit {
  color: #2E8FCE;
  -webkit-text-fill-color: #2E8FCE;
}
body.home .kpi-label { color: var(--gray-500); }

/* — Bouton primaire (home) : léger dégradé indigo pour du relief — */
body.home .btn-primary {
  background: linear-gradient(120deg, var(--indigo) 0%, var(--primary) 100%);
  border-color: var(--indigo);
}
body.home .btn-primary:hover {
  background: linear-gradient(120deg, var(--primary-2) 0%, var(--primary) 100%);
  border-color: var(--primary-2);
}

/* — Logo responsive ajusté proportionnellement — */
@media (max-width: 768px) {
  .site-header .logo img { height: 40px; }
}

/* — Secteurs (accueil) : 01-04 en colonne gauche, 05-08 en colonne droite — */
body.home .sectors-grid {
  grid-template-columns: 1fr 1fr;
  grid-template-rows: repeat(4, auto);
  grid-auto-flow: column;
  column-gap: 48px;
}
body.home .sector {
  grid-template-columns: 44px 64px 1fr auto;
  gap: 20px;
  padding: 22px 0;
}
body.home .sector h3 { font-size: clamp(1rem, 1.3vw, 1.2rem); }
@media (max-width: 768px) {
  body.home .sectors-grid {
    grid-template-columns: 1fr;
    grid-template-rows: none;
    grid-auto-flow: row;
    column-gap: 0;
  }
}

/* =========================================================
   Pied de page — bandeau dégradé bleu (navy → azur)
   Logo et texte en blanc · dans la charte indigo/bleu
   (global, toutes pages)
   ========================================================= */
.site-footer {
  background: linear-gradient(105deg, #0A0544 0%, #273583 50%, #2E8FCE 100%);
  color: rgba(255,255,255,.78);
  border-top: 0;
}
.site-footer .footer-info strong { color: rgba(255,255,255,.62); }
.site-footer a { color: #fff; }
.site-footer a:hover { color: #fff; opacity: .8; }
.footer-social a {
  background: #1E9BD7;
  border-radius: 50%;
  width: 40px; height: 40px;
}
.footer-social a:hover { background: #2EB0EC; }
.footer-social svg { fill: #fff; }
.footer-social a:hover svg { fill: #fff; }
.footer-bottom {
  border-top-color: rgba(255,255,255,.22);
  color: rgba(255,255,255,.7);
}
.footer-legal a { color: rgba(255,255,255,.78); }
.footer-legal a:hover { color: #fff; }

/* =========================================================
   Propagation de la charte colorée — TOUTES les pages
   (mêmes tons que l'accueil et le pied de page)
   ========================================================= */

/* — Barre d'accent bleue sur les titres de section — */
.section-title h2 { position: relative; padding-left: 20px; }
.section-title h2::before {
  content: '';
  position: absolute;
  left: 0; top: .16em;
  width: 5px; height: .8em;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--sky) 0%, var(--indigo) 100%);
}
/* Titres centrés : pas de barre à gauche */
.section-title.center h2,
section[style*="text-align:center"] .section-title h2 { padding-left: 0; }
.section-title.center h2::before,
section[style*="text-align:center"] .section-title h2::before { display: none; }

/* — Bannière de page (pages internes) : légère teinte bleue + trait dégradé — */
.page-banner {
  background:
    radial-gradient(circle at 100% 0%, rgba(46,143,206,.12), transparent 55%),
    linear-gradient(180deg, var(--white) 0%, #eef3fb 100%);
}
.page-banner::before {
  width: 120px;
  background: linear-gradient(90deg, var(--indigo) 0%, #2E8FCE 100%);
}

/* — Chiffres clés (pages internes) : fond blanc + chiffres en dégradé bleu — */
.kpis {
  background: var(--white);
  color: var(--gray-900);
  border-top: 0;
  border-bottom: 1px solid var(--gray-200);
  position: relative;
}
.kpis::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(105deg, #0A0544 0%, #273583 50%, #2E8FCE 100%);
}
.kpis .section-title h2 { color: var(--gray-900); }
.kpi { border-left-color: var(--gray-200); }
.kpi-number {
  color: var(--indigo);
  background: linear-gradient(105deg, #273583 0%, #2E8FCE 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.kpi-number .unit { color: #2E8FCE; -webkit-text-fill-color: #2E8FCE; }
.kpi-label { color: var(--gray-500); }

/* — Bandeau « On recrute » : dégradé bleu (comme le pied de page) — */
.recruit {
  background: linear-gradient(105deg, #0A0544 0%, #273583 50%, #2E8FCE 100%);
}
/* Séparation lorsque le pied de page suit directement le bandeau recrutement */
.recruit + .site-footer {
  border-top: 1px solid rgba(255,255,255,.28);
}

/* — Boutons primaires : dégradé indigo (toutes pages) — */
.btn-primary {
  background: linear-gradient(120deg, var(--indigo) 0%, var(--primary) 100%);
  border-color: var(--indigo);
}
.btn-primary:hover {
  background: linear-gradient(120deg, var(--primary-2) 0%, var(--primary) 100%);
  border-color: var(--primary-2);
}