:root {
  --navy: #15324a;
  --gold: #d6a94a;
  --ink: #1f2933;
  --muted: #607284;
  --line: #dfe6eb;
  --soft: #f5f7f9;
  --white: #ffffff;
  --max: 1140px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: #ffffff;
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(calc(100% - 36px), var(--max));
  margin: auto;
}

/* HEADER */

.site-header {
  border-bottom: 1px solid var(--line);
  background: #ffffff;
  position: sticky;
  top: 0;
  z-index: 20;
}

.header-inner {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.logo img {
  width: 290px;
}

nav {
  display: flex;
  align-items: center;
  gap: 24px;
  font-weight: 600;
}

nav a:hover {
  color: var(--gold);
}

.lang-switch {
  display: flex;
  gap: 8px;
  margin-left: 8px;
}

.lang-btn {
  border: 1px solid var(--line);
  background: #ffffff;
  border-radius: 6px;
  padding: 7px 9px;
  cursor: pointer;
  font-weight: 700;
}

.lang-btn.active {
  background: var(--navy);
  color: #ffffff;
  border-color: var(--navy);
}

.mobile-toggle {
  display: none;
  background: none;
  border: 0;
  font-size: 1.6rem;
}

/* HERO */

.hero {
  padding: 78px 0;
  background: linear-gradient(180deg, #f7f9fb 0%, #ffffff 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 60px;
  align-items: center;
}

.kicker {
  color: var(--gold);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.85rem;
}

h1,
h2,
h3 {
  color: var(--navy);
  line-height: 1.16;
  margin: 0 0 18px;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4.8rem);
  letter-spacing: -0.04em;
}

h2 {
  font-size: clamp(2rem, 3vw, 3rem);
}

h3 {
  font-size: 1.3rem;
}

.lead {
  font-size: 1.18rem;
  color: var(--muted);
  max-width: 700px;
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.btn {
  display: inline-block;
  padding: 13px 20px;
  border-radius: 6px;
  font-weight: 700;
}

.btn-primary {
  background: var(--navy);
  color: #ffffff;
}

.btn-primary:hover {
  background: #0e263a;
}

.btn-secondary {
  border: 1px solid var(--navy);
  color: var(--navy);
}

.hero-box {
  background: var(--navy);
  color: #ffffff;
  padding: 34px;
  border-radius: 10px;
}

.hero-box h3 {
  color: #ffffff;
}

.hero-box ul {
  padding-left: 20px;
  margin: 18px 0 0;
}

.hero-box li {
  margin: 8px 0;
}

/* SECTIONS */

.section {
  padding: 78px 0;
}

.section.soft {
  background: var(--soft);
}

.section-head {
  max-width: 760px;
  margin-bottom: 38px;
}

.section-head p {
  color: var(--muted);
  font-size: 1.05rem;
}

/* SERVICES */

.services {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.service {
  border: 1px solid var(--line);
  padding: 28px;
  background: #ffffff;
  border-radius: 8px;
}

.service small {
  display: block;
  color: var(--gold);
  font-weight: 700;
  margin-bottom: 8px;
}

.service p {
  color: var(--muted);
}

.service ul {
  padding-left: 20px;
  margin-bottom: 0;
}

.service li {
  margin: 7px 0;
}

/* EXPERIENCE / PROJET */

.experience-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 34px;
  align-items: start;
}

.project {
  border-left: 4px solid var(--gold);
  background: #ffffff;
  overflow: hidden;
}

.project-image-wrap {
  border-bottom: 1px solid var(--line);
  background: #eef2f4;
}

.project-image {
  width: 100%;
  aspect-ratio: 5 / 3;
  object-fit: cover;
}

.project-content {
  padding: 24px;
}

.project p {
  color: var(--muted);
}

.sectors {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.sector {
  padding: 9px 12px;
  border: 1px solid var(--line);
  background: #ffffff;
  border-radius: 999px;
  color: var(--navy);
  font-size: 0.92rem;
}

/* ORGANISATION */

.structure {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: center;
}

.structure-box {
  background: #ffffff;
  border: 1px solid var(--line);
  padding: 28px;
  border-radius: 8px;
}

/* CONTACT */

.contact-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 34px;
}

.contact-card,
.contact-form {
  border: 1px solid var(--line);
  padding: 28px;
  border-radius: 8px;
  background: #ffffff;
}

label {
  display: block;
  font-weight: 700;
  margin-bottom: 6px;
}

input,
textarea,
select {
  width: 100%;
  padding: 12px 13px;
  border: 1px solid #cfd8de;
  border-radius: 6px;
  font: inherit;
}

.field {
  margin-bottom: 16px;
}

.notice {
  font-size: 0.9rem;
  color: #7c5d15;
  background: #fff8e8;
  border: 1px solid #edd79e;
  padding: 12px;
  border-radius: 6px;
}

/* FOOTER */

footer {
  background: #0f2435;
  color: #d4dde4;
  padding: 42px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 30px;
}

.footer-logo {
  filter: brightness(0) invert(1);
  width: 255px;
}

footer h3 {
  color: #ffffff;
  font-size: 1rem;
}

footer a {
  display: block;
  margin: 6px 0;
}

.footer-bottom {
  border-top: 1px solid #284257;
  margin-top: 30px;
  padding-top: 18px;
  font-size: 0.9rem;
}

/* RESPONSIVE */

@media (max-width: 900px) {
  .mobile-toggle {
    display: block;
  }

  nav {
    position: absolute;
    top: 82px;
    left: 18px;
    right: 18px;
    background: #ffffff;
    border: 1px solid var(--line);
    padding: 18px;
    display: none;
    flex-direction: column;
    align-items: flex-start;
  }

  nav.open {
    display: flex;
  }

  .hero-grid,
  .experience-grid,
  .structure,
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .logo img {
    width: 225px;
  }

  .services,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero,
  .section {
    padding: 58px 0;
  }
}

.website-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* =========================================
   PAGE DE CONFIRMATION - MERCI.HTML
   ========================================= */

.thanks-page {
  min-height: 65vh;
  display: flex;
  align-items: center;
  padding: 70px 0;
  background: #f5f7f9;
}

.thanks-box {
  max-width: 700px;
  margin: 0 auto;
  padding: 50px;
  text-align: center;
  background: #ffffff;
  border: 1px solid #dfe6eb;
  border-radius: 10px;
}

.thanks-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 25px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #15324a;
  color: #ffffff;
  font-size: 30px;
  font-weight: bold;
}

.thanks-box h1 {
  margin-bottom: 18px;
}

.thanks-box p {
  max-width: 550px;
  margin: 0 auto 25px;
  color: #607284;
  font-size: 1.05rem;
}

.thanks-box .btn {
  margin-top: 10px;
}


/* Version mobile */

@media (max-width: 640px) {

  .thanks-box {
    padding: 35px 22px;
  }

}