/* =========================================================
   EMF CONSULTING — feuille de style
   Concept : carotte géologique. Le ruban vertical qui longe
   chaque page reprend les strates (latérite, basalte, eau,
   calcaire) que l'entreprise rencontre sur le terrain.

   Lisibilité : base 17,6 px, corps de texte 1,02 rem minimum,
   interligne 1,65, contrastes conformes WCAG AA.
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@500&display=swap');

:root {
  --c-laterite: #a8532b;
  --c-laterite-dark: #7c3c1d;
  --c-basalte: #232b2e;
  --c-eau: #14608f;
  --c-eau-clair: #7db6dd;
  --c-feuille: #4a8130;
  --c-calcaire: #eae7dc;
  --c-calcaire-bord: #d5d0bf;
  --c-roche: #565046;
  --c-roche-clair: #d5d0c6;
  --c-encre: #1c2224;
  --c-papier: #fbfaf7;

  --font-titre: 'Space Grotesk', 'Segoe UI', sans-serif;
  --font-texte: 'IBM Plex Sans', 'Segoe UI', sans-serif;
  --font-donnee: 'IBM Plex Mono', ui-monospace, monospace;

  --rail: 9px;
  --max: 1180px;
}

* { box-sizing: border-box; }

html {
  font-size: 110%;              /* ~17,6 px : lecture confortable sur écran */
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  font-family: var(--font-texte);
  font-size: 1rem;
  color: var(--c-encre);
  background: var(--c-papier);
  line-height: 1.65;
  padding-left: var(--rail);
  -webkit-font-smoothing: antialiased;
}

/* Ruban stratigraphique — signature visuelle du site */
body::before {
  content: "";
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--rail);
  z-index: 600;
  background: repeating-linear-gradient(
    180deg,
    var(--c-laterite) 0, var(--c-laterite) 70px,
    var(--c-basalte) 70px, var(--c-basalte) 120px,
    var(--c-eau) 120px, var(--c-eau) 190px,
    var(--c-calcaire-bord) 190px, var(--c-calcaire-bord) 230px,
    var(--c-feuille) 230px, var(--c-feuille) 270px,
    var(--c-roche) 270px, var(--c-roche) 330px
  );
}
@media (max-width: 640px) { :root { --rail: 5px; } }

/* ---------- Titres et texte ---------- */
h1, h2, h3, h4 { font-family: var(--font-titre); font-weight: 600; line-height: 1.2; margin: 0 0 0.5em; color: var(--c-basalte); }
h1 { font-size: clamp(2.15rem, 4vw, 3.1rem); font-weight: 700; letter-spacing: -0.015em; line-height: 1.12; }
h2 { font-size: clamp(1.6rem, 2.6vw, 2.15rem); letter-spacing: -0.01em; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.05rem; }

p { margin: 0 0 1.1em; max-width: 68ch; }
.lead { font-size: 1.2rem; line-height: 1.6; color: var(--c-roche); max-width: 54ch; }

a { color: inherit; }
img { max-width: 100%; display: block; }
.mono { font-family: var(--font-donnee); }

/* Focus clavier visible partout */
a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid var(--c-eau);
  outline-offset: 2px;
  border-radius: 2px;
}

/* Lien d'évitement (navigation clavier et lecteurs d'écran) */
.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 999;
  background: var(--c-basalte); color: #fff;
  padding: 12px 20px; text-decoration: none; font-weight: 600;
}
.skip-link:focus { left: var(--rail); }

.container { max-width: var(--max); margin: 0 auto; padding: 0 28px; }
@media (max-width: 640px) { .container { padding: 0 20px; } }

.section { padding: 92px 0; }
.section--dark { background: var(--c-basalte); color: var(--c-roche-clair); }
.section--dark h2, .section--dark h3, .section--dark h4 { color: #fff; }
.section--dark p, .section--dark .lead { color: var(--c-roche-clair); }
.section--calcaire { background: var(--c-calcaire); }
.section-head { max-width: 680px; margin-bottom: 48px; }
.section-head p { color: var(--c-roche); font-size: 1.08rem; }
.section--dark .section-head p { color: var(--c-roche-clair); }
@media (max-width: 640px) { .section { padding: 64px 0; } }

.kicker { font-family: var(--font-donnee); font-size: 0.9rem; color: var(--c-eau); display: block; margin-bottom: 12px; }
.section--dark .kicker { color: var(--c-eau-clair); }

/* ---------- Header ---------- */
header.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(251, 250, 247, 0.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--c-calcaire-bord);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 14px 28px; max-width: var(--max); margin: 0 auto; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; flex-shrink: 0; }
.brand img { height: 50px; width: auto; }
nav.main-nav { display: flex; align-items: center; gap: 26px; }
nav.main-nav a { text-decoration: none; font-size: 1.02rem; color: var(--c-encre); padding: 8px 2px; border-bottom: 2px solid transparent; white-space: nowrap; }
nav.main-nav a:hover, nav.main-nav a[aria-current="page"] { border-bottom-color: var(--c-laterite); }
.nav-actions { display: flex; align-items: center; gap: 18px; flex-shrink: 0; }
.lang-switch { display: flex; gap: 4px; font-family: var(--font-donnee); font-size: 0.9rem; }
.lang-switch a { text-decoration: none; padding: 6px 10px; border-radius: 3px; color: var(--c-roche); }
.lang-switch a:hover { background: var(--c-calcaire); }
.lang-switch a[aria-current="true"] { background: var(--c-basalte); color: #fff; }
.btn-phone { font-family: var(--font-donnee); font-size: 0.95rem; color: var(--c-eau); text-decoration: none; white-space: nowrap; }
.btn-phone:hover { text-decoration: underline; }
.nav-toggle { display: none; }

@media (max-width: 1000px) {
  nav.main-nav { position: fixed; inset: 78px 0 0 0; background: var(--c-papier); flex-direction: column; align-items: flex-start; padding: 24px 28px 40px; gap: 0; transform: translateX(100%); transition: transform 0.28s ease; overflow-y: auto; border-top: 1px solid var(--c-calcaire-bord); }
  nav.main-nav.is-open { transform: translateX(0); }
  nav.main-nav a { width: 100%; padding: 17px 4px; font-size: 1.18rem; border-bottom: 1px solid var(--c-calcaire-bord); }
  .btn-phone { display: none; }
  .nav-toggle { display: flex; align-items: center; justify-content: center; background: none; border: 1px solid var(--c-calcaire-bord); border-radius: 4px; width: 46px; height: 46px; cursor: pointer; padding: 0; }
  .nav-toggle span { display: block; position: relative; width: 20px; height: 2px; background: var(--c-basalte); }
  .nav-toggle span::before, .nav-toggle span::after { content: ""; position: absolute; left: 0; width: 20px; height: 2px; background: var(--c-basalte); transition: transform 0.22s ease, top 0.22s ease; }
  .nav-toggle span::before { top: -6px; }
  .nav-toggle span::after { top: 6px; }
  .nav-toggle[aria-expanded="true"] span { background: transparent; }
  .nav-toggle[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span::after { top: 0; transform: rotate(-45deg); }
}

/* ---------- Boutons ---------- */
.btn { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-texte); font-weight: 600; font-size: 1.02rem; padding: 15px 30px; border-radius: 3px; text-decoration: none; border: 1px solid transparent; cursor: pointer; line-height: 1.3; }
.btn--primaire { background: var(--c-laterite); color: #fff; }
.btn--primaire:hover { background: var(--c-laterite-dark); }
.btn--primaire:disabled { opacity: 0.6; cursor: not-allowed; }
.btn--ligne { border-color: currentColor; color: var(--c-basalte); background: none; }
.section--dark .btn--ligne { color: #fff; }
.btn--ligne:hover { background: rgba(0,0,0,0.06); }
.section--dark .btn--ligne:hover { background: rgba(255,255,255,0.10); }

/* ---------- Hero ---------- */
.hero { padding: 72px 0 44px; }
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items: center; }
.hero-cta-row { display: flex; gap: 14px; margin-top: 30px; flex-wrap: wrap; }
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; margin-top: 52px; border-top: 1px solid var(--c-calcaire-bord); padding-top: 28px; }
.stat b { display: block; font-family: var(--font-titre); font-size: clamp(1.45rem, 2.1vw, 1.85rem); color: var(--c-laterite); line-height: 1.2; white-space: nowrap; }
.stat span { display: block; font-size: 0.95rem; color: var(--c-roche); line-height: 1.45; margin-top: 4px; }
@media (max-width: 880px) { .hero-grid { grid-template-columns: 1fr; gap: 40px; } .hero-visual { order: -1; } .stat-row { grid-template-columns: repeat(2, 1fr); gap: 24px; } }
@media (max-width: 460px) { .stat-row { grid-template-columns: 1fr; } }

.log-caption { font-family: var(--font-donnee); font-size: 0.78rem; fill: var(--c-roche); }

/* ---------- Grilles / activités ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 34px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; }
.grid-2--centre { align-items: center; }
@media (max-width: 880px) { .grid-3 { grid-template-columns: 1fr; gap: 40px; } .grid-2 { grid-template-columns: 1fr; gap: 36px; } }

.activite { border-top: 3px solid var(--c-laterite); padding-top: 20px; }
.activite:nth-child(2) { border-top-color: var(--c-eau); }
.activite:nth-child(3) { border-top-color: var(--c-feuille); }
.activite h3 { margin: 16px 0 10px; }
.activite p { color: var(--c-roche); font-size: 1.02rem; margin-bottom: 0; }

/* ---------- Photos ---------- */
.photo-frame { border-radius: 2px; overflow: hidden; background: var(--c-calcaire-bord); aspect-ratio: 4/3; }
.photo-frame img, .photo-frame iframe { width: 100%; height: 100%; object-fit: cover; border: 0; display: block; }
.photo-frame.tall { aspect-ratio: 3/4; }
.photo-frame.wide { aspect-ratio: 16/9; }
figure { margin: 0; }
figcaption { font-family: var(--font-donnee); font-size: 0.88rem; color: var(--c-roche); margin-top: 10px; }

/* ---------- Spécifications techniques ---------- */
.spec-table { width: 100%; border-collapse: collapse; font-size: 1.02rem; }
.spec-table th { text-align: left; font-family: var(--font-titre); font-weight: 600; font-size: 1.05rem; padding: 12px 14px; border-bottom: 2px solid var(--c-basalte); }
.spec-table td { padding: 15px 14px; border-bottom: 1px solid var(--c-calcaire-bord); }
.spec-table td.num, .spec-table th.num { font-family: var(--font-donnee); text-align: right; white-space: nowrap; }
@media (max-width: 480px) {
  .spec-table, .spec-table td, .spec-table th { font-size: 0.95rem; }
  .spec-table td, .spec-table th { padding: 12px 8px; }
}

.effectif-list { list-style: none; margin: 0; padding: 0; }
.effectif-list li { display: flex; align-items: baseline; gap: 18px; padding: 18px 0; border-bottom: 1px solid var(--c-calcaire-bord); }
.effectif-list b { font-family: var(--font-titre); font-size: 1.45rem; color: var(--c-laterite); min-width: 2ch; }
.effectif-list .role { flex: 1; font-size: 1.05rem; }

/* ---------- Projets ---------- */
.projets-list { border-top: 1px solid var(--c-calcaire-bord); }
.projet-item { display: grid; grid-template-columns: 160px 1fr; gap: 28px; padding: 30px 0; border-bottom: 1px solid var(--c-calcaire-bord); }
.projet-item .date { font-family: var(--font-donnee); font-size: 0.95rem; color: var(--c-eau); padding-top: 4px; }
.projet-item h3 { font-size: 1.18rem; margin: 6px 0 0; }
.projet-item .client { font-family: var(--font-donnee); font-size: 0.9rem; color: var(--c-roche); }
.projet-item p { color: var(--c-roche); font-size: 1.02rem; margin: 10px 0 0; }
.tag-group { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap; }
.tag { font-family: var(--font-donnee); font-size: 0.82rem; background: var(--c-calcaire); border: 1px solid var(--c-calcaire-bord); padding: 5px 11px; border-radius: 3px; color: var(--c-roche); }
.section--calcaire .tag { background: #fff; }
@media (max-width: 640px) { .projet-item { grid-template-columns: 1fr; gap: 8px; padding: 26px 0; } }

/* ---------- Parcours ---------- */
.timeline { border-left: 2px solid var(--c-calcaire-bord); margin-left: 6px; padding-left: 32px; }
.timeline-item { position: relative; padding-bottom: 38px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before { content: ""; position: absolute; left: -39px; top: 6px; width: 12px; height: 12px; border-radius: 50%; background: var(--c-laterite); border: 3px solid var(--c-papier); }
.section--calcaire .timeline-item::before { border-color: var(--c-calcaire); }
.timeline-item .date { font-family: var(--font-donnee); font-size: 0.92rem; color: var(--c-eau); }
.timeline-item h3 { margin: 5px 0 7px; font-size: 1.18rem; }
.timeline-item p { color: var(--c-roche); font-size: 1.02rem; margin-bottom: 0; }

.skill-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.skill-tags span { font-family: var(--font-donnee); font-size: 0.9rem; padding: 8px 14px; background: var(--c-calcaire); border-radius: 3px; color: var(--c-encre); }
.section--dark .skill-tags span { background: rgba(255,255,255,0.10); color: #fff; }

/* ---------- Coordonnées ---------- */
.coord-list { margin: 0; }
.coord-list dt { font-family: var(--font-donnee); font-size: 0.9rem; color: var(--c-eau); margin-bottom: 5px; }
.coord-list dd { margin: 0 0 24px; font-size: 1.05rem; line-height: 1.6; }
.coord-list dd a { color: var(--c-encre); }

/* ---------- Formulaire ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-grid .full { grid-column: 1 / -1; }
label { display: block; font-size: 0.98rem; font-weight: 500; margin-bottom: 7px; color: var(--c-encre); }
input, select, textarea { width: 100%; font-family: var(--font-texte); font-size: 1.02rem; padding: 14px 15px; border: 1px solid #b9b3a3; border-radius: 3px; background: #fff; color: var(--c-encre); line-height: 1.4; }
input:hover, select:hover, textarea:hover { border-color: var(--c-roche); }
textarea { resize: vertical; min-height: 140px; }
.honeypot { position: absolute; left: -9999px; }
.form-note { font-size: 0.98rem; color: var(--c-roche); margin-top: 16px; }
#form-status { margin-top: 18px; font-size: 1.05rem; font-weight: 500; }
#form-status.ok { color: #2f6b1c; }
#form-status.err { color: var(--c-laterite-dark); }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }

/* ---------- Footer ---------- */
footer.site-footer { background: var(--c-basalte); color: var(--c-roche-clair); padding: 60px 0 28px; font-size: 1.02rem; }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 44px; }
.footer-grid h4 { color: #fff; font-size: 1.05rem; margin-bottom: 16px; }
.footer-grid p { color: var(--c-roche-clair); }
.footer-grid a { color: var(--c-roche-clair); text-decoration: none; }
.footer-grid a:hover { color: #fff; text-decoration: underline; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.footer-bottom { max-width: var(--max); margin: 44px auto 0; padding: 22px 28px 0; border-top: 1px solid rgba(255,255,255,0.14); font-size: 0.92rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
@media (max-width: 880px) { .footer-grid { grid-template-columns: 1fr; gap: 36px; } }

/* ---------- Bandeau CTA ---------- */
.cta-band { background: var(--c-eau); color: #fff; padding: 64px 0; }
.cta-band .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 26px; }
.cta-band h2 { color: #fff; margin: 0; max-width: 26ch; }
.cta-band .btn--primaire { background: #fff; color: #10527a; }
.cta-band .btn--primaire:hover { background: var(--c-calcaire); }

/* ---------- Page 404 ---------- */
.erreur-page { padding: 110px 0; text-align: center; }
.erreur-page .code { font-family: var(--font-donnee); font-size: 4.5rem; color: var(--c-calcaire-bord); line-height: 1; margin-bottom: 12px; }
.erreur-page p { margin-left: auto; margin-right: auto; }
.erreur-page .hero-cta-row { justify-content: center; }

/* ---------- Impression ---------- */
@media print {
  body { padding-left: 0; background: #fff; }
  body::before, header.site-header, .cta-band, .nav-toggle { display: none; }
  .section { padding: 20px 0; }
  a { text-decoration: underline; }
}