/* ==========================================================
   OPSE – Bureau d'études  |  Feuille de style principale
   ========================================================== */
:root {
  --navy: #23255f;          /* bleu marine du menu (maquette ACCUEIL) */
  --petrol-dark: #08354c;   /* départ du dégradé du logo */
  --petrol: #17698f;
  --petrol-light: #3ea3cb;  /* fin du dégradé du logo */
  --green: #78b828;         /* vert du logo */
  --green-dark: #5c9417;
  --band: #95a9cd;          /* bandeau bleu-gris de la maquette */
  --band-light: #e9eef7;
  --text: #2a2d3a;
  --text-soft: #5b6072;
  --bg: #ffffff;
  --bg-soft: #f4f6fa;
  --line: #dde2ec;
  --gradient: linear-gradient(90deg, var(--petrol-dark) 0%, var(--petrol) 55%, var(--petrol-light) 100%);
  --f-title: "Bebas Neue", "Oswald", Impact, sans-serif;
  --f-label: "Josefin Sans", "Lato", sans-serif;
  --f-body: "Lato", system-ui, -apple-system, "Segoe UI", sans-serif;
  --wrap: 1200px;
  --radius: 4px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--f-body);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--petrol); }
a:hover { color: var(--navy); }
h1, h2, h3 { font-family: var(--f-title); font-weight: 400; color: var(--navy); line-height: 1.05; margin: 0 0 .4em; letter-spacing: .5px; }
h1 { font-size: clamp(42px, 6vw, 76px); }
h2 { font-size: clamp(34px, 4vw, 52px); }
h3 { font-size: clamp(24px, 2.4vw, 30px); }
p { margin: 0 0 1em; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section--soft { background: var(--bg-soft); }
.eyebrow {
  display: inline-block;
  font-family: var(--f-label);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 14px;
  color: var(--green-dark);
  margin-bottom: 12px;
}
.lead { font-size: 20px; color: var(--text-soft); }
.center { text-align: center; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- Boutons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--f-label); font-weight: 600; font-size: 15px;
  text-transform: uppercase; letter-spacing: 1.5px; text-decoration: none;
  padding: 15px 28px; border-radius: var(--radius); border: 2px solid transparent;
  transition: background .2s, color .2s, border-color .2s, transform .2s;
  cursor: pointer;
}
.btn--green { background: var(--green); color: #fff; }
.btn--green:hover { background: var(--green-dark); color: #fff; }
.btn--outline { border-color: var(--navy); color: var(--navy); background: transparent; }
.btn--outline:hover { background: var(--navy); color: #fff; }
.btn--light { border-color: #fff; color: #fff; }
.btn--light:hover { background: #fff; color: var(--navy); }

/* ---------- En-tête ---------- */
.header { position: relative; z-index: 20; background: #fff; border-bottom: 1px solid var(--line); }
.header__inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 92px; }
.header__logo img { width: 120px; }
.nav__list { display: flex; gap: 6px; list-style: none; margin: 0; padding: 0; }
.nav__list a {
  display: block; padding: 10px 14px;
  font-family: var(--f-label); font-weight: 600; font-size: 16px;
  text-transform: uppercase; letter-spacing: 1px;
  color: var(--navy); text-decoration: none; position: relative;
}
.nav__list a::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 4px; height: 3px;
  background: var(--green); transform: scaleX(0); transform-origin: left; transition: transform .25s;
}
.nav__list a:hover::after, .nav__list a[aria-current="page"]::after { transform: scaleX(1); }
.nav__list .nav__cta { background: var(--green); color: #fff; border-radius: var(--radius); margin-left: 8px; }
.nav__list .nav__cta::after { display: none; }
.nav__list .nav__cta:hover { background: var(--green-dark); }
.nav__toggle { display: none; background: none; border: 0; padding: 10px; cursor: pointer; }
.nav__toggle span { display: block; width: 26px; height: 3px; background: var(--navy); margin: 5px 0; border-radius: 2px; transition: transform .25s, opacity .25s; }

/* En-tête de la page d'accueil : posé sur le fond de plans */
.home .header { position: absolute; top: 0; left: 0; right: 0; background: transparent; border: 0; }
.home .header__inner { align-items: flex-start; padding-top: 36px; }
.home .header__logo img { width: 250px; }
.home .nav { padding-top: 18px; }

/* ---------- Héros (accueil) ---------- */
.hero {
  position: relative;
  background: url("../img/plans.jpg") center / cover no-repeat;
  padding: 0 0 0;
}
.hero::before { content: ""; position: absolute; inset: 0; background: rgba(255, 255, 255, .62); }
.hero > * { position: relative; }
.hero__content { min-height: 470px; display: flex; flex-direction: column; justify-content: flex-end; align-items: flex-end; text-align: right; padding-top: 230px; padding-bottom: 40px; }
.hero__title { font-size: clamp(46px, 6.4vw, 84px); margin: 0; }
/* Héros avec l'outil 3D animé */
.hero__content--3d { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: end; gap: 24px; padding-top: 190px; min-height: 0; text-align: left; }
.hero__content--3d .hero__title { font-size: clamp(42px, 5vw, 70px); }
.hero__model { display: block; width: 100%; height: 430px; background: transparent; --poster-color: transparent; position: relative; }
.hero__model .viewer3d__loading { background: rgba(35, 37, 95, .15); }
.hero__text { text-align: right; padding-bottom: 20px; }
.hero__hint { font-family: var(--f-label); font-size: 13px; letter-spacing: 1px; color: var(--text-soft); margin: 14px 0 0; }
.hero__subtitle { font-family: var(--f-label); font-size: 20px; font-weight: 600; color: var(--petrol); text-transform: uppercase; letter-spacing: 2px; margin: 4px 0 0; }

/* Les 3 cartes à cheval sur le bandeau bleu-gris */
.tiles { position: relative; padding-bottom: 80px; }
.tiles::before { content: ""; position: absolute; left: 0; right: 0; top: 45%; bottom: 0; background: var(--gradient); }
.tiles__grid { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px; }
.tile {
  position: relative; display: flex; flex-direction: column; overflow: hidden;
  background: #fff; border-radius: 14px; text-decoration: none;
  box-shadow: 0 12px 34px rgba(35, 37, 95, .10);
  transition: transform .35s ease, box-shadow .35s ease;
}
.tile__media { overflow: hidden; background: #fff; }
.tile img { width: 100%; aspect-ratio: 4 / 3; object-fit: contain; padding: 22px 22px 6px; transition: transform .6s ease; }
.tile__body { padding: 6px 28px 26px; }
.tile__label {
  display: block; font-family: var(--f-title); font-size: clamp(30px, 3vw, 40px); letter-spacing: 1.5px; line-height: 1;
  color: var(--navy);
}
.tile__label::after {
  content: ""; display: block; width: 36px; height: 3px; margin-top: 10px;
  background: var(--green); border-radius: 2px; transition: width .35s ease;
}
.tile__more {
  display: inline-block; margin-top: 12px;
  font-family: var(--f-label); font-weight: 600; font-size: 13px; letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--petrol); transition: transform .3s ease;
}
.tile:hover, .tile:focus-visible { transform: translateY(-6px); box-shadow: 0 22px 48px rgba(35, 37, 95, .18); }
.tile:hover img, .tile:focus-visible img { transform: scale(1.05); }
.tile:hover .tile__label::after, .tile:focus-visible .tile__label::after { width: 72px; }
.tile:hover .tile__more, .tile:focus-visible .tile__more { transform: translateX(6px); }

/* ---------- Bandeau de page (pages intérieures) ---------- */
.page-head { position: relative; background: url("../img/plans.jpg") center / cover; padding: 80px 0 70px; border-bottom: 6px solid var(--green); }
.page-head::before { content: ""; position: absolute; inset: 0; background: rgba(255, 255, 255, .72); }
.page-head > * { position: relative; }
.page-head h1 { margin: 0; }
.breadcrumb { font-family: var(--f-label); font-size: 14px; text-transform: uppercase; letter-spacing: 1px; color: var(--text-soft); margin-bottom: 8px; }
.breadcrumb a { color: var(--petrol); text-decoration: none; }

/* ---------- Blocs génériques ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split--top { align-items: start; }
.split__media img { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }

.quote {
  position: relative; margin: 0; padding: 28px 32px 28px 40px;
  background: var(--gradient); border-left: 6px solid var(--green);
  font-size: 20px; font-style: italic; color: #fff;
}
.quote footer { margin-top: 14px; display: flex; justify-content: flex-end; }
.quote__signature { width: 210px; max-width: 60%; height: auto; }

.domains { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 48px; }
.domain {
  background: #fff; border: 1px solid var(--line); border-top: 5px solid var(--petrol);
  padding: 28px 24px; transition: transform .25s, box-shadow .25s; text-decoration: none; color: inherit; display: block;
}
.domains--3 { grid-template-columns: repeat(3, 1fr); }
.domain:hover { transform: translateY(-4px); box-shadow: 0 14px 30px rgba(35, 37, 95, .12); color: inherit; }
.domain--green { border-top-color: var(--green); }
.domain__num { font-family: var(--f-title); font-size: 40px; color: var(--petrol-light); line-height: 1; }
.domain h3 { margin: 10px 0 8px; }
.domain p { margin: 0; color: var(--text-soft); font-size: 16px; }

.figures { display: grid; grid-template-columns: repeat(3, 1fr); background: var(--gradient); color: #fff; }
.figure { padding: 40px 24px; text-align: center; border-right: 1px solid rgba(255, 255, 255, .2); }
.figure:last-child { border-right: 0; }
.figure strong { display: block; font-family: var(--f-title); font-weight: 400; font-size: 58px; line-height: 1; }
.figure span { font-family: var(--f-label); text-transform: uppercase; letter-spacing: 1.5px; font-size: 14px; }

.steps { counter-reset: step; display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; list-style: none; padding: 0; margin: 40px 0 0; }
.steps li { counter-increment: step; position: relative; background: #fff; border: 1px solid var(--line); padding: 56px 18px 22px; font-size: 16px; }
.steps li::before {
  content: counter(step); position: absolute; top: 16px; left: 18px;
  font-family: var(--f-title); font-size: 34px; line-height: 1; color: var(--green);
}
.steps strong { display: block; font-family: var(--f-label); color: var(--navy); margin-bottom: 4px; }

.checklist { list-style: none; padding: 0; margin: 0 0 1.4em; }
.checklist li { position: relative; padding-left: 32px; margin-bottom: 10px; }
.checklist li::before {
  content: ""; position: absolute; left: 0; top: 7px; width: 18px; height: 18px; border-radius: 50%;
  background: var(--green) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5L20 7'/%3E%3C/svg%3E") center / 12px no-repeat;
}

.logos { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 8px; }
.logos span {
  font-family: var(--f-label); font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; font-size: 15px;
  color: var(--navy); border: 2px solid var(--line); padding: 10px 18px; border-radius: var(--radius); background: #fff;
}

/* Secteurs d'activité (Expertise) */
.sectors { list-style: none; padding: 0; margin: 26px 0 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.sectors li { font-family: var(--f-label); font-weight: 600; font-size: 14px; letter-spacing: 1px; text-transform: uppercase; color: #fff; background: var(--gradient); padding: 10px 18px; border-radius: 30px; box-shadow: 0 6px 16px rgba(35, 37, 95, .12); }

/* Références (logos clients) */
.refs { margin-top: 44px; }
.refs__title { font-family: var(--f-label); font-weight: 700; font-size: 15px; letter-spacing: 2px; text-transform: uppercase; color: var(--green-dark); margin: 0 0 16px; }
.refs__grid { list-style: none; margin: 0; padding: 0; display: grid; gap: 18px; }
.refs__grid--6 { grid-template-columns: repeat(6, 1fr); }
.refs__grid--4 { grid-template-columns: repeat(4, 1fr); }
.ref { display: flex; align-items: center; justify-content: center; height: 110px; padding: 18px 22px; background: #fff; border-radius: 12px; box-shadow: 0 10px 28px rgba(35, 37, 95, .08); transition: transform .3s ease, box-shadow .3s ease; }
.ref:hover { transform: translateY(-4px); box-shadow: 0 18px 38px rgba(35, 37, 95, .14); }
.ref img { max-width: 100%; max-height: 64px; object-fit: contain; filter: grayscale(1); opacity: .8; transition: filter .3s, opacity .3s; }
.ref:hover img { filter: none; opacity: 1; }
.ref__name { font-family: var(--f-title); font-size: 30px; letter-spacing: 1.5px; color: var(--navy); text-align: center; line-height: 1; }
@media (max-width: 1080px) { .refs__grid--6 { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 560px) { .refs__grid--6, .refs__grid--4 { grid-template-columns: repeat(2, 1fr); } .ref { height: 90px; } }

/* Sous-navigation de la page Expertise */
.subnav { position: sticky; top: 0; z-index: 10; background: #fff; border-bottom: 1px solid var(--line); }
.subnav ul { display: flex; gap: 0; justify-content: space-between; list-style: none; margin: 0 auto; padding: 0 24px; max-width: var(--wrap); overflow-x: auto; }
.subnav a { display: block; white-space: nowrap; padding: 16px 10px; font-family: var(--f-label); font-weight: 600; text-transform: uppercase; letter-spacing: 1px; font-size: 14px; color: var(--navy); text-decoration: none; border-bottom: 3px solid transparent; }
.subnav a:hover { border-color: var(--green); }
.anchor { scroll-margin-top: 70px; }

.tag { display: inline-block; font-family: var(--f-label); font-weight: 600; font-size: 13px; letter-spacing: 1px; text-transform: uppercase; padding: 5px 12px; border-radius: 30px; background: var(--band-light); color: var(--petrol); margin-bottom: 14px; }
.tag--green { background: #eaf4dc; color: var(--green-dark); }

/* ---------- Galerie ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 40px; }
.filter {
  font-family: var(--f-label); font-weight: 600; font-size: 14px; letter-spacing: 1px; text-transform: uppercase;
  padding: 10px 20px; border: 2px solid var(--navy); background: #fff; color: var(--navy); border-radius: 30px; cursor: pointer;
}
.filter.is-active, .filter:hover { background: var(--navy); color: #fff; }
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.gallery__item { margin: 0; background: #fff; border: 1px solid var(--line); overflow: hidden; }
.gallery__item[hidden] { display: none; }
.gallery__item button { display: block; width: 100%; padding: 0; border: 0; background: #fff; cursor: zoom-in; overflow: hidden; }
.gallery__item img { width: 100%; aspect-ratio: 4 / 3; object-fit: contain; padding: 10px; transition: transform .4s; }
.gallery__item button:hover img { transform: scale(1.05); }
/* Visuels mis en forme (fond dégradé déjà intégré à l'image) */
.gallery__item--visuel button { background: #0b3d57; }
.gallery__item--visuel img { padding: 0; }
.gallery__item figcaption { padding: 14px 18px; border-top: 1px solid var(--line); font-size: 15px; }
.gallery__item figcaption strong { display: block; font-family: var(--f-label); color: var(--navy); }
.gallery__item figcaption span { color: var(--text-soft); font-size: 14px; }

.lightbox { position: fixed; inset: 0; z-index: 100; background: rgba(10, 14, 40, .92); display: flex; align-items: center; justify-content: center; padding: 60px 70px; }
.lightbox[hidden] { display: none; }
.lightbox img { max-height: 100%; max-width: 100%; background: #fff; border-radius: var(--radius); }
.lightbox__caption { position: absolute; bottom: 16px; left: 0; right: 0; text-align: center; color: #fff; font-family: var(--f-label); letter-spacing: 1px; }
.lightbox button { position: absolute; background: rgba(255, 255, 255, .12); color: #fff; border: 0; width: 52px; height: 52px; border-radius: 50%; font-size: 28px; line-height: 1; cursor: pointer; }
.lightbox button:hover { background: var(--green); }
.lightbox__close { top: 16px; right: 16px; }
.lightbox__prev { left: 12px; top: 50%; transform: translateY(-50%); }
.lightbox__next { right: 12px; top: 50%; transform: translateY(-50%); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.3fr; gap: 56px; align-items: start; }
.contact-card { background: var(--gradient); color: #fff; padding: 40px 36px; }
.contact-card h2 { color: #fff; }
.contact-card a { color: #fff; }
.contact-list { list-style: none; padding: 0; margin: 0 0 28px; }
.contact-list li { display: flex; gap: 14px; align-items: flex-start; margin-bottom: 18px; }
.contact-list svg { flex: none; width: 22px; height: 22px; margin-top: 3px; stroke: var(--green); }
.contact-list small { display: block; font-family: var(--f-label); text-transform: uppercase; letter-spacing: 1px; font-size: 12px; opacity: .8; }
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form__field { display: flex; flex-direction: column; gap: 6px; }
.form__field--full { grid-column: 1 / -1; }
.form label { font-family: var(--f-label); font-weight: 600; font-size: 14px; letter-spacing: .5px; color: var(--navy); }
.form input, .form select, .form textarea {
  font: inherit; font-size: 16px; padding: 12px 14px; border: 1px solid #c8cfdd; border-radius: var(--radius); background: #fff; color: var(--text);
}
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--petrol); box-shadow: 0 0 0 3px rgba(23, 105, 143, .18); }
.form textarea { min-height: 160px; resize: vertical; }
.form__error { color: #b42318; font-size: 14px; min-height: 1em; }
.form__note { font-size: 14px; color: var(--text-soft); }
.map { margin-top: 64px; border: 0; width: 100%; height: 380px; filter: grayscale(.2); }

.form__hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.notice { padding: 14px 18px; border-radius: var(--radius); margin: 0 0 24px; font-weight: 700; }
.notice--ok { background: #eaf4dc; color: #3b6d11; border-left: 5px solid var(--green); }
.notice--error { background: #fcebeb; color: #a32d2d; border-left: 5px solid #e24b4a; }

/* ---------- Contenu libre (Mentions légales, nouvelles pages WordPress) ---------- */
.entry { max-width: 860px; }
.entry h2 { font-size: clamp(28px, 3vw, 36px); margin-top: 1.4em; }
.entry h2:first-child { margin-top: 0; }
.entry h3 { margin-top: 1.2em; }
.entry ul, .entry ol { padding-left: 1.3em; }
.entry img { border-radius: var(--radius); }
.entry article { padding-bottom: 32px; margin-bottom: 32px; border-bottom: 1px solid var(--line); }

/* ---------- Barre d'administration WordPress (utilisateurs connectés) ---------- */
.admin-bar .home .header, .admin-bar.home .header { top: 32px; }
@media (max-width: 782px) { .admin-bar.home .header { top: 46px; } }

/* ---------- Étapes « Notre méthode » (À propos) ---------- */
.story { display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); gap: 48px; align-items: center; margin-top: 56px; }
.story--reverse .story__text { order: 2; }
.story__num { display: block; font-family: var(--f-title); font-size: 64px; line-height: 1; color: var(--green); }
.story__text h3 { font-size: clamp(30px, 3vw, 40px); margin: 6px 0 12px; }
.story__text p { color: var(--text-soft); }
.story__figure { display: block; background: #fff; border-radius: 12px; padding: 14px; box-shadow: 0 12px 34px rgba(35, 37, 95, .10); overflow: hidden; cursor: zoom-in; transition: transform .35s ease, box-shadow .35s ease; }
.story__figure img { width: 100%; border-radius: 6px; transition: transform .6s ease; }
.story__figure:hover { transform: translateY(-4px); box-shadow: 0 20px 44px rgba(35, 37, 95, .16); }
.story__figure:hover img { transform: scale(1.03); }
.story:has(.story__figure--wide), .story:has(.story__pair) { grid-template-columns: 1fr; gap: 20px; }
.story:has(.story__figure--wide) .story__text, .story:has(.story__pair) .story__text { max-width: 760px; }
.story__pair { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: start; }
.story__pair figure { margin: 0; }
.story__pair figcaption { margin-top: 10px; font-family: var(--f-label); font-weight: 600; font-size: 14px; letter-spacing: 1px; text-transform: uppercase; color: var(--navy); }
@media (max-width: 860px) { .story__pair { grid-template-columns: 1fr; } }
@media (max-width: 860px) {
  .story { grid-template-columns: 1fr; gap: 20px; margin-top: 44px; }
  .story--reverse .story__text { order: 0; }
}

/* ---------- Visionneuse 3D ---------- */
.viewer3d { background: var(--gradient); padding: 72px 0 88px; position: relative; overflow: hidden; }
.viewer3d::after { content: ""; position: absolute; left: -10%; right: -10%; bottom: -260px; height: 400px; border-top: 10px solid var(--green); border-radius: 50%; transform: rotate(-4deg); opacity: .8; pointer-events: none; }
.viewer3d__head { color: #fff; margin-bottom: 24px; position: relative; z-index: 1; }
.viewer3d__head h1 { color: #fff; }
.viewer3d__head .eyebrow { color: #a8dd5f; }
.viewer3d__head .lead { color: rgba(255, 255, 255, .85); max-width: 640px; }
.viewer3d__stage { display: block; width: 100%; height: min(70vh, 640px); background: transparent; position: relative; z-index: 1; --poster-color: transparent; }
.viewer3d__loading { position: absolute; left: 20%; right: 20%; top: 50%; height: 4px; background: rgba(255, 255, 255, .2); border-radius: 2px; overflow: hidden; transition: opacity .4s; }
.viewer3d__loading span { display: block; height: 100%; width: 0; background: var(--green); transition: width .2s; }
.viewer3d__loading.is-done { opacity: 0; }
.viewer3d__grid { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: 32px; align-items: center; }
.viewer3d--home .viewer3d__head { margin-bottom: 0; }
.viewer3d--home .viewer3d__head h2 { color: #fff; }
.viewer3d--home .viewer3d__stage { height: min(60vh, 560px); }
.viewer3d__file { position: relative; z-index: 1; color: #fff; background: rgba(255, 255, 255, .1); border: 1px dashed rgba(255, 255, 255, .5); border-radius: 10px; padding: 28px; font-size: 16px; }
.viewer3d__file strong { display: block; font-family: var(--f-label); letter-spacing: 1px; text-transform: uppercase; color: #a8dd5f; margin-bottom: 8px; }
.viewer3d__hint { font-size: 14px; color: rgba(255, 255, 255, .7); font-family: var(--f-label); letter-spacing: .5px; }
@media (max-width: 860px) {
  .viewer3d__grid { grid-template-columns: 1fr; gap: 8px; }
  .viewer3d--home .viewer3d__stage { height: 380px; }
}

/* ---------- Appel à l'action ---------- */
.cta { background: var(--gradient); color: #fff; padding: 72px 0; position: relative; overflow: hidden; }
.cta::after { content: ""; position: absolute; right: -80px; bottom: -120px; width: 520px; height: 220px; border-top: 10px solid var(--green); border-radius: 50%; transform: rotate(-8deg); opacity: .9; }
.cta__inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; position: relative; z-index: 1; }
.cta h2 { color: #fff; margin: 0; }
.cta p { margin: 6px 0 0; opacity: .9; }

/* ---------- Pied de page ---------- */
.footer { background: #071f33; color: #c7d3e3; padding: 64px 0 0; font-size: 15px; }
.footer a { color: #c7d3e3; text-decoration: none; }
.footer a:hover { color: #fff; }
.footer__grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 48px; }
.footer__logo { width: 150px; margin-bottom: 16px; }
.footer h4 { font-family: var(--f-label); text-transform: uppercase; letter-spacing: 1.5px; font-size: 14px; color: #fff; margin: 0 0 16px; }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li { margin-bottom: 8px; }
.footer__bottom { margin-top: 48px; border-top: 1px solid rgba(255, 255, 255, .12); padding: 20px 0; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 13px; }

/* ---------- Apparition au défilement ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ==========================================================
   Responsive
   ========================================================== */
@media (max-width: 1080px) {
  .home .header__logo img { width: 190px; }
  .nav__list a { padding: 10px 9px; font-size: 15px; }
  .domains { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .tiles__grid { gap: 24px; }
}

@media (max-width: 860px) {
  .section { padding: 64px 0; }
  .nav__toggle { display: block; position: relative; z-index: 30; }
  .nav {
    position: fixed; inset: 0; z-index: 25; background: #fff; padding: 110px 24px 24px;
    transform: translateX(100%); transition: transform .3s ease; visibility: hidden;
  }
  .nav.is-open { transform: none; visibility: visible; }
  .home .nav { padding-top: 110px; }
  .nav__list { flex-direction: column; gap: 4px; }
  .nav__list a { font-size: 22px; padding: 14px 6px; border-bottom: 1px solid var(--line); }
  .nav__list a::after { display: none; }
  .nav__list .nav__cta { margin: 16px 0 0; text-align: center; border: 0; }
  .nav-open .nav__toggle span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .nav-open .nav__toggle span:nth-child(2) { opacity: 0; }
  .nav-open .nav__toggle span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
  .nav-open { overflow: hidden; }

  .home .header__inner { align-items: center; padding-top: 20px; }
  .home .header__logo img { width: 150px; }
  .hero__content { padding-top: 190px; min-height: 380px; align-items: flex-start; text-align: left; }
  .hero__content--3d { grid-template-columns: 1fr; padding-top: 140px; gap: 0; }
  .hero__model { height: 300px; }
  .hero__text { text-align: left; }
  .tiles__grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
  .tiles::before { top: 20%; }
  .tile img { aspect-ratio: 16 / 10; }

  .split, .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .figures { grid-template-columns: 1fr; }
  .figure { border-right: 0; border-bottom: 1px solid rgba(255, 255, 255, .2); padding: 28px; }
  .figure:last-child { border-bottom: 0; }
  .gallery { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .cta__inner { flex-direction: column; align-items: flex-start; }
  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 560px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .domains, .steps, .gallery, .form { grid-template-columns: 1fr; }
  .quote { padding: 22px 20px 22px 24px; font-size: 18px; }
  .lightbox { padding: 60px 8px; }
  .lightbox__prev, .lightbox__next { top: auto; bottom: 8px; transform: none; }
  .lightbox__caption { bottom: 22px; padding: 0 70px; font-size: 14px; }
}

/* Accueil : 3 domaines (alignés sur la page Expertise) */
@media (max-width: 1080px) { .domains--3 { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 860px) { .domains--3 { grid-template-columns: 1fr; } }