/* =========================================================
   NOVOFORM 3D — feuille de style globale
   Base : charte du site d'origine (fond crème, encre, bleu marine).
   Principe : sobriété, filets fins, beaucoup d'air, peu d'effets.
   ========================================================= */
:root {
  --canvas: #f5f4f0;
  --surface: #ffffff;
  --surface-soft: #efeee9;
  --ink: #111111;
  --muted: #686868;
  --line: #dcdad3;
  --blue: #173e58;
  --blue-hover: #0f3046;
  --blue-soft: #dfe9ee;
  --terracotta: #c85d2f;   /* céramique / accent ponctuel */
  --green: #4f6b4a;        /* écologie, très discret */
  --font-display: "Helvetica Neue", "Avenir Next", Inter, Arial, sans-serif;
  --font-body: Inter, "Helvetica Neue", Arial, sans-serif;
  --container: 1280px;
  --gutter: clamp(1rem, 3vw, 3rem);
  --section: clamp(4.5rem, 7vw, 7rem);
  --radius: 4px;
  --t: 220ms cubic-bezier(.2, .65, .3, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--canvas); color: var(--ink);
  font-family: var(--font-body); font-size: clamp(1rem, .96rem + .18vw, 1.0625rem); line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
img.is-missing { visibility: hidden; }
.brand img.is-missing { display: none; } /* logo absent : on garde seulement le nom */
a { color: inherit; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 500; line-height: 1.08; margin: 0 0 .6em; }
h1 { font-size: clamp(2.6rem, 1.6rem + 4vw, 4.75rem); letter-spacing: -.045em; }
h2 { font-size: clamp(1.8rem, 1.25rem + 2vw, 3rem); letter-spacing: -.04em; }
h3 { font-size: 1.3rem; letter-spacing: -.02em; }
p { margin: 0 0 1em; }

.container { width: min(100% - 2 * var(--gutter), var(--container)); margin-inline: auto; }
.section { padding: var(--section) 0; }
.section--white { background: var(--surface); }
.section--soft { background: var(--surface-soft); }
.section + .section { border-top: 1px solid var(--line); }
.section--white + .section, .section + .section--white { border-top: 0; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 12px; margin-bottom: 18px;
  font-size: .75rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--blue);
}
.eyebrow::before { content: ""; width: 32px; height: 1px; background: currentColor; }
.lead { font-size: clamp(1.1rem, 1.02rem + .35vw, 1.3rem); color: var(--muted); max-width: 60ch; }
.muted { color: var(--muted); }

.section-head { display: grid; grid-template-columns: 1fr 1fr; gap: 32px 64px; align-items: end; margin-bottom: 56px; }
.section-head h2 { margin: 0; }
.section-head p { margin: 0; color: var(--muted); }
@media (max-width: 860px) { .section-head { grid-template-columns: 1fr; } }

.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 960px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

/* ---------- Boutons ---------- */
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 14px 22px; border-radius: var(--radius); border: 1px solid transparent;
  font: 600 .92rem/1 var(--font-body); text-decoration: none; cursor: pointer; transition: var(--t);
}
.button--primary { background: var(--blue); color: #fff; }
.button--primary:hover { background: var(--blue-hover); }
.button--outline { border-color: var(--ink); color: var(--ink); background: transparent; }
.button--outline:hover { background: var(--ink); color: #fff; }
.button--small { padding: 10px 16px; font-size: .85rem; }
.text-link {
  display: inline-flex; align-items: center; gap: 10px; font-weight: 600; font-size: .92rem; text-decoration: none;
}
.text-link::after { content: ""; width: 28px; height: 1px; background: currentColor; transition: var(--t); }
.text-link:hover::after { width: 40px; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 28px; margin-top: 36px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50; background: rgba(245, 244, 240, .94);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--line);
}
.header-inner { height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand img { width: 36px; height: 36px; object-fit: contain; }
.brand-text { font: 600 .95rem var(--font-display); letter-spacing: .08em; white-space: nowrap; }
.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a { font-size: .88rem; text-decoration: none; color: var(--ink); white-space: nowrap; position: relative; padding: 6px 0; }
.main-nav a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 1px; background: var(--ink); transition: var(--t);
}
.main-nav a:hover::after, .main-nav a.active::after { right: 0; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.menu-toggle {
  display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 50%;
  background: transparent; cursor: pointer; position: relative;
}
.menu-toggle span, .menu-toggle span::before {
  position: absolute; left: 12px; right: 12px; height: 1px; background: var(--ink); content: ""; transition: var(--t);
}
.menu-toggle span { top: 17px; }
.menu-toggle span::before { left: 0; right: 0; top: 7px; }
@media (max-width: 1180px) {
  .menu-toggle { display: block; }
  .main-nav {
    display: none; position: fixed; inset: 72px 0 auto; background: var(--canvas); border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: stretch; gap: 0; padding: 8px var(--gutter) 24px;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 1rem; }
  .main-nav a::after { display: none; }
}
@media (max-width: 520px) { .header-actions .button { display: none; } }

/* ---------- Hero ---------- */
.hero { padding: clamp(3.5rem, 6vw, 6rem) 0 var(--section); }
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(2rem, 5vw, 5rem); align-items: center; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } }
.hero .lead { margin-top: 8px; }
.media { position: relative; background: var(--surface-soft); border-radius: var(--radius); overflow: hidden; }
.media img { width: 100%; height: 100%; object-fit: cover; }
.media--hero { aspect-ratio: 5 / 4; }
.media--wide { aspect-ratio: 16 / 10; }
.media--square { aspect-ratio: 1; }

.sheet {
  position: absolute; left: 24px; bottom: 24px; width: min(320px, calc(100% - 48px));
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px;
  font-size: .82rem;
}
.sheet-head { display: flex; justify-content: space-between; text-transform: uppercase; letter-spacing: .12em; font-size: .7rem; font-weight: 600; padding-bottom: 10px; border-bottom: 1px solid var(--line); margin-bottom: 6px; }
.sheet dl { margin: 0; display: grid; grid-template-columns: auto 1fr; }
.sheet dt, .sheet dd { padding: 7px 0; border-bottom: 1px solid var(--line); margin: 0; }
.sheet dt { color: var(--muted); }
.sheet dd { text-align: right; font-weight: 600; }
.sheet dl > :nth-last-child(-n+2) { border-bottom: 0; }

.sheet--inline { position: static; width: 100%; max-width: 440px; }
/* Accueil : texte et fiche à gauche, diaporama à droite sur toute la hauteur.
   Sur téléphone : texte, puis photo, puis fiche. */
.hero-grid { row-gap: 40px; }
.hero-grid > .slideshow { grid-column: 2; grid-row: 1 / span 2; }
.hero-grid > :first-child { align-self: end; }
.hero-grid > .sheet--inline { grid-column: 1; grid-row: 2; align-self: start; }
@media (max-width: 900px) {
  .hero-grid > .slideshow, .hero-grid > .sheet--inline { grid-column: auto; grid-row: auto; }
  .hero-grid > .sheet--inline { order: 2; }
}

/* Diaporama de l'en-tête : même format que les photos (3:4), sans dépasser la hauteur de l'écran */
.slideshow.media--hero {
  aspect-ratio: 3 / 4; width: min(100%, calc((100vh - 120px) * .75)); justify-self: end;
}
@media (max-width: 900px) {
  .slideshow.media--hero { width: 100%; aspect-ratio: 4 / 5; justify-self: stretch; }
}
.slideshow figure { position: absolute; inset: 0; margin: 0; opacity: 0; transition: opacity .9s ease; }
.slideshow figure.is-on { opacity: 1; }
.slideshow figcaption {
  position: absolute; left: 16px; bottom: 16px; max-width: calc(100% - 130px);
  background: rgba(255, 255, 255, .92); color: var(--ink); font-size: .78rem; font-weight: 500;
  padding: 7px 12px; border-radius: var(--radius);
}
.slide-dots { position: absolute; right: 16px; bottom: 20px; display: flex; gap: 6px; }
.slide-dots span { width: 7px; height: 7px; border-radius: 50%; background: rgba(255, 255, 255, .55); transition: var(--t); }
.slide-dots span.is-on { background: #fff; width: 18px; border-radius: 4px; }
@media (prefers-reduced-motion: reduce) { .slideshow figure { transition: none; } }

.facts { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--surface); }
.facts ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); }
.facts li { padding: 22px 16px; text-align: center; font-size: .88rem; font-weight: 500; border-left: 1px solid var(--line); }
.facts li:first-child { border-left: 0; }
@media (max-width: 860px) {
  .facts ul { grid-template-columns: repeat(2, 1fr); }
  .facts li { border-left: 0; border-top: 1px solid var(--line); }
}

/* ---------- Page hero (pages internes) ---------- */
.page-hero { padding: clamp(3.5rem, 6vw, 6rem) 0 clamp(2.5rem, 4vw, 4rem); border-bottom: 1px solid var(--line); }
.breadcrumb { font-size: .8rem; color: var(--muted); margin-bottom: 28px; }
.breadcrumb a { text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.anchors { display: flex; flex-wrap: wrap; gap: 8px 28px; margin-top: 32px; }

/* ---------- Liste éditoriale numérotée (services) ---------- */
.service { display: block; text-decoration: none; border-top: 1px solid var(--ink); padding-top: 22px; }
.service .media { margin-bottom: 22px; }
.service-num { font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
.service h3 { margin: 10px 0 8px; }
.service p { color: var(--muted); font-size: .95rem; }
.service:hover h3 { text-decoration: underline; text-underline-offset: 4px; }

/* ---------- Carrousel à flèches (réalisations) ---------- */
.carousel-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 32px; }
.carousel-head h2 { margin: 0; }
.carousel-nav { display: flex; gap: 8px; }
.carousel-nav button {
  width: 48px; height: 48px; border-radius: 50%; border: 1px solid var(--ink); background: transparent;
  font-size: 1.5rem; line-height: 1; cursor: pointer; color: var(--ink); transition: var(--t);
}
.carousel-nav button:hover:not(:disabled) { background: var(--ink); color: #fff; }
.carousel-nav button:disabled { opacity: .3; cursor: default; }
.carousel-track {
  display: grid; grid-auto-flow: column; grid-auto-columns: calc((100% - 48px) / 3); gap: 24px;
  overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; padding-bottom: 4px;
}
.carousel-track::-webkit-scrollbar { display: none; }
.carousel-track figure { margin: 0; scroll-snap-align: start; }
.carousel-track .media { aspect-ratio: 4 / 5; }
.carousel-track figcaption { margin-top: 14px; font-size: .95rem; }
.carousel-track figcaption span {
  display: block; font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; font-weight: 600;
  color: var(--blue); margin-bottom: 4px;
}
@media (max-width: 960px) { .carousel-track { grid-auto-columns: calc((100% - 24px) / 2); } }
@media (max-width: 560px) {
  .carousel-track { grid-auto-columns: 82%; }
  .carousel-nav button { width: 42px; height: 42px; }
}

/* ---------- Rangées (technologies, processus) ---------- */
.rows { border-top: 1px solid var(--line); }
.row {
  display: grid; grid-template-columns: 80px 1fr 1.4fr auto; gap: 24px; align-items: baseline;
  padding: 28px 0; border-bottom: 1px solid var(--line); text-decoration: none;
}
.row-num { font-size: .8rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.row h3 { margin: 0; }
.row p { margin: 0; color: var(--muted); }
.row-tag { font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; font-weight: 600; color: var(--blue); }
a.row:hover h3 { text-decoration: underline; text-underline-offset: 4px; }
@media (max-width: 760px) { .row { grid-template-columns: 48px 1fr; } .row p, .row-tag { grid-column: 2; } }

/* ---------- Bloc technologie détaillé ---------- */
.tech { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 5rem); padding: var(--section) 0; border-bottom: 1px solid var(--line); align-items: start; }
.tech:last-child { border-bottom: 0; }
.tech:nth-child(even) .media { order: 2; }
@media (max-width: 860px) { .tech { grid-template-columns: 1fr; } .tech:nth-child(even) .media { order: 0; } }
.specs { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); margin: 28px 0; }
.specs div { padding: 14px 0; border-bottom: 1px solid var(--line); }
.specs div:nth-child(odd) { padding-right: 16px; }
.specs span { display: block; font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.specs strong { font-weight: 600; }
.list { list-style: none; padding: 0; margin: 0; }
.list li { padding: 10px 0 10px 24px; border-bottom: 1px solid var(--line); position: relative; }
.list li::before { content: ""; position: absolute; left: 0; top: 21px; width: 12px; height: 1px; background: var(--ink); }

.audience { margin: 20px 0 0; font-size: .92rem; color: var(--muted); }
.audience strong { color: var(--ink); font-weight: 600; margin-right: 4px; }

/* ---------- Tableau matériaux ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.filter {
  font: 500 .85rem var(--font-body); padding: 8px 16px; border: 1px solid var(--line); border-radius: 999px;
  background: transparent; color: var(--ink); cursor: pointer; transition: var(--t);
}
.filter:hover { border-color: var(--ink); }
.filter.active { background: var(--ink); border-color: var(--ink); color: #fff; }
.table-wrap { overflow-x: auto; border-top: 1px solid var(--ink); }
table { width: 100%; border-collapse: collapse; font-size: .92rem; min-width: 780px; }
th, td { text-align: left; padding: 16px 16px 16px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
td:first-child { font-weight: 600; }
td.muted { color: var(--muted); }
.status { font-size: .8rem; white-space: nowrap; }
.status::before { content: ""; display: inline-block; width: 7px; height: 7px; border-radius: 50%; margin-right: 8px; background: var(--blue); }
.status--demande::before { background: transparent; border: 1px solid var(--muted); }
.note { font-size: .82rem; color: var(--muted); margin-top: 16px; }

/* ---------- Bloc conseil / engagement ---------- */
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(28px, 4vw, 48px); }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 5rem); align-items: start; }
.split--form { grid-template-columns: 1.5fr 1fr; }
.split > * { min-width: 0; }
@media (max-width: 860px) { .split, .split--form { grid-template-columns: 1fr; } }

.callout { border-left: 2px solid var(--blue); padding: 4px 0 4px 20px; margin: 0 0 32px; color: var(--muted); }
.callout strong { color: var(--ink); }

/* ---------- Formulaire ---------- */
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 24px; }
.form .full { grid-column: 1 / -1; }
@media (max-width: 640px) { .form { grid-template-columns: 1fr; } }
.form fieldset { border: 0; padding: 0; margin: 0; display: contents; }
.form legend { grid-column: 1 / -1; font: 500 1.15rem var(--font-display); padding: 20px 0 0; border-top: 1px solid var(--line); width: 100%; }
.form legend:first-of-type { border-top: 0; padding-top: 0; }
label { display: block; font-size: .82rem; font-weight: 600; margin-bottom: 6px; }
input, select, textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--surface); font: inherit; font-size: .95rem; color: var(--ink);
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px var(--blue-soft); }
textarea { min-height: 140px; resize: vertical; }
input[type="file"] { padding: 10px; background: var(--canvas); }
.hint { font-size: .78rem; color: var(--muted); margin-top: 6px; }
.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; color: var(--muted); font-size: .85rem; }
.check input { width: auto; margin-top: 4px; }
.form-msg { display: none; padding: 14px 16px; border-radius: var(--radius); font-size: .9rem; }
.form-msg.ok { display: block; background: #e8efe6; color: #2f4a2b; }
.form-msg.err { display: block; background: #f6e5dd; color: #8a3a17; }
.aside-list { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--line); }
.aside-list li { padding: 16px 0; border-bottom: 1px solid var(--line); }
.aside-list strong { display: block; }
.aside-list span { color: var(--muted); font-size: .9rem; }

/* ---------- Blog ---------- */
.post { text-decoration: none; display: block; }
.post .media { margin-bottom: 18px; }
.post-meta { font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
.post h3 { margin: 10px 0 8px; }
.post p { color: var(--muted); font-size: .95rem; }
.post:hover h3 { text-decoration: underline; text-underline-offset: 4px; }

/* ---------- CTA ---------- */
.cta { display: grid; grid-template-columns: 1.4fr auto; gap: 32px; align-items: end; }
.cta h2 { margin-bottom: 12px; }
.cta p { color: var(--muted); margin: 0; max-width: 56ch; }
@media (max-width: 760px) { .cta { grid-template-columns: 1fr; } }

/* ---------- Footer ---------- */
.site-footer { background: var(--surface); border-top: 1px solid var(--line); padding: 64px 0 32px; font-size: .9rem; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; }
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }
.site-footer h4 { font: 600 .72rem var(--font-body); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: 16px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.footer-legal {
  margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; font-size: .78rem; color: var(--muted);
}

/* ---------- Prose ---------- */
.prose { max-width: 760px; }
.prose h2 { font-size: 1.6rem; margin-top: 2em; }
.prose p, .prose li { color: #333; }

.reveal { opacity: 0; transform: translateY(12px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } }