:root {
  --ink: #00273d;
  --ink-soft: #004e7a;
  --green: #0081cc;
  --green-dark: #00273d;
  --sage: #c2e9ff;
  --sand: #f2eee6;
  --cream: #d9d9d9;
  --white: #ffffff;
  --line: #c2e9ff;
  --accent: #0081cc;
  --shadow: 0 18px 45px rgba(20, 48, 44, .10);
  --radius: 18px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--ink);
  background: var(--cream);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(248,247,242,.94);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(24,49,47,.08);
}

.nav-wrap {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--white);
}

.brand-logo {
  width: 205px;
  height: 52px;
  object-fit: contain;
  object-position: left center;
  display: block;
}

.brand strong {
  display: block;
  font-size: 16px;
  letter-spacing: .18em;
  line-height: 1.1;
}

.brand small {
  display: block;
  margin-top: 4px;
  font-size: 9px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 18px;
}

.adc-logo-link {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 72px;
  width: 72px;
  overflow: hidden;
  border-radius: 4px;
}

.adc-logo {
  display: block;
  width: 72px;
  height: 72px;
  object-fit: cover;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  font-size: 14px;
  font-weight: 600;
}

.main-nav a {
  text-decoration: none;
  color: var(--ink-soft);
  transition: color .2s ease;
}

.main-nav a:hover { color: var(--green); }

.main-nav .nav-cta {
  padding: 10px 18px;
  border-radius: 999px;
  color: var(--white);
  background: var(--green);
}

.menu-toggle {
  display: none;
  border: 0;
  background: none;
  padding: 8px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  margin: 5px 0;
  background: var(--ink);
}

.hero {
  position: relative;
  overflow: hidden;
  background: var(--cream);
  min-height: 690px;
  display: flex;
  align-items: center;
}

.hero-pattern {
  position: absolute;
  width: 620px;
  height: 620px;
  right: -190px;
  top: 40px;
  border: 1px solid rgba(29,81,73,.12);
  border-radius: 50%;
  box-shadow:
    0 0 0 70px rgba(29,81,73,.035),
    0 0 0 140px rgba(29,81,73,.025),
    0 0 0 210px rgba(29,81,73,.018);
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 80px;
  align-items: center;
  padding: 85px 0;
}

.eyebrow {
  margin: 0 0 17px;
  color: var(--green);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(43px, 5vw, 70px);
  line-height: 1.04;
  letter-spacing: -.045em;
  font-weight: 760;
}

h1 em, h2 em {
  color: var(--green);
  font-style: normal;
  font-weight: 650;
}

.hero-text {
  max-width: 610px;
  margin: 27px 0 0;
  font-size: 18px;
  color: var(--ink-soft);
}

.hero-actions {
  display: flex;
  gap: 13px;
  flex-wrap: wrap;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  min-height: 48px;
  padding: 12px 22px;
  border-radius: 999px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 750;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: var(--white);
  background: var(--green);
  box-shadow: 0 8px 20px rgba(29,81,73,.18);
}

.button-primary:hover { background: var(--green-dark); }

.button-ghost {
  color: var(--green);
  border: 1px solid rgba(29,81,73,.22);
  background: transparent;
}

.hero-location {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 27px;
  font-size: 12px;
  color: var(--ink-soft);
}

.location-dot, .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(202,166,106,.13);
}

.hero-card {
  min-height: 455px;
  padding: 24px;
  border-radius: 28px;
  background: var(--green-dark);
  color: var(--white);
  box-shadow: var(--shadow);
  overflow: hidden;
  position: relative;
}

.hero-card-top {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .14em;
  opacity: .82;
}

.house-visual {
  position: relative;
  height: 300px;
  margin-top: 8px;
}

.house {
  position: absolute;
  z-index: 1;
  left: 50%;
  bottom: 50px;
  transform: translateX(-50%);
  width: 210px;
  height: 155px;
  background: #e9eee8;
  border-radius: 4px 4px 0 0;
}

.roof {
  position: absolute;
  z-index: 2;
  left: 50%;
  top: 5px;
  transform: translateX(-50%);
  width: 245px;
  height: 95px;
  background: #b9c9c0;
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
  opacity: .95;
}

.window {
  position: absolute;
  top: 30px;
  width: 42px;
  height: 42px;
  background: #b6d1cb;
  border: 5px solid #52756e;
}
.window-left { left: 28px; }
.window-right { right: 28px; }

.door {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 45px;
  height: 75px;
  background: #55736d;
}

.ground-line {
  position: absolute;
  left: 8%;
  right: 8%;
  bottom: 49px;
  height: 1px;
  background: rgba(255,255,255,.22);
}

.signal {
  position: absolute;
  z-index: 3;
  border: 2px solid rgba(0, 129, 204, .9);
  border-radius: 50%;
  left: 50%;
  top: 87px;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 9px rgba(0, 129, 204, .25);
}
.signal-1 { width: 35px; height: 35px; }
.signal-2 { width: 72px; height: 72px; }
.signal-3 { width: 115px; height: 115px; }

.hero-card-footer {
  position: absolute;
  left: 24px;
  right: 24px;
  bottom: 23px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  border-top: 1px solid rgba(255,255,255,.15);
  padding-top: 16px;
}

.hero-card-footer strong, .hero-card-footer span {
  display: block;
}

.hero-card-footer strong {
  font-size: 14px;
}

.hero-card-footer span {
  margin-top: 2px;
  font-size: 11px;
  opacity: .68;
}

.section {
  padding: 105px 0;
}

.section-light { background: var(--white); }

.section-heading {
  max-width: 720px;
  margin-bottom: 50px;
}

.section-heading.centered {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-heading h2, .expertise h2, .local-section h2, .contact h2 {
  margin: 0;
  font-size: clamp(34px, 4vw, 52px);
  line-height: 1.08;
  letter-spacing: -.035em;
}

.section-heading > p:last-child {
  margin-top: 18px;
  max-width: 650px;
  color: var(--ink-soft);
  font-size: 16px;
}

.section-heading.centered > p:last-child {
  margin-left: auto;
  margin-right: auto;
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.solution-card {
  min-height: 235px;
  padding: 29px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--cream);
  transition: transform .2s ease, box-shadow .2s ease;
}

.solution-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.solution-card-featured {
  background: var(--green);
  border-color: var(--green);
  color: var(--white);
}

.icon {
  width: 43px;
  height: 43px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--sage);
  color: var(--green);
  font-weight: 800;
  font-size: 16px;
}

.solution-card-featured .icon {
  background: rgba(255,255,255,.13);
  color: var(--white);
}

.solution-card h3 {
  margin: 20px 0 7px;
  font-size: 19px;
}

.solution-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.solution-card-featured p { color: rgba(255,255,255,.75); }

.expertise {
  background: var(--sand);
}

.expertise-grid {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 100px;
  align-items: start;
}

.expertise-intro { position: sticky; top: 125px; }

.expertise-intro .lead {
  color: var(--ink-soft);
  font-size: 18px;
}

.accent-line {
  width: 58px;
  height: 3px;
  margin: 25px 0;
  background: var(--accent);
}

.expertise-text {
  padding-top: 8px;
}

.expertise-text p {
  margin: 0 0 20px;
  color: var(--ink-soft);
  font-size: 16px;
}

.expertise-text strong { color: var(--ink); }

.credentials {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 32px;
}

.credential {
  padding: 20px 16px;
  border-top: 2px solid var(--green);
  background: rgba(255,255,255,.48);
}

.credential strong {
  display: block;
  font-size: 21px;
}

.credential span {
  display: block;
  margin-top: 5px;
  color: var(--ink-soft);
  font-size: 11px;
  line-height: 1.35;
}

.audience-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.audience-card {
  min-height: 390px;
  padding: 40px;
  border-radius: 22px;
  background: var(--sage);
  position: relative;
  overflow: hidden;
}

.audience-card.dark-card {
  background: var(--green-dark);
  color: var(--white);
}

.audience-number {
  font-size: 12px;
  letter-spacing: .15em;
  font-weight: 800;
  color: var(--green);
}

.dark-card .audience-number { color: #c8d8d1; }

.audience-card h3 {
  margin: 35px 0 10px;
  font-size: 31px;
}

.audience-tagline {
  max-width: 400px;
  margin: 0 0 17px;
  font-size: 18px;
  font-weight: 650;
}

.audience-card > p:not(.audience-tagline) {
  max-width: 510px;
  color: var(--ink-soft);
  font-size: 14px;
}

.dark-card > p:not(.audience-tagline) { color: rgba(255,255,255,.72); }

.audience-card a {
  display: inline-flex;
  gap: 10px;
  margin-top: 15px;
  color: var(--green);
  text-decoration: none;
  font-weight: 750;
  font-size: 13px;
}

.dark-card a { color: var(--white); }

.approach {
  background: var(--cream);
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
}

.step {
  min-height: 225px;
  padding: 27px 25px 25px 0;
  margin-right: 25px;
  border-right: 1px solid var(--line);
}

.step:last-child {
  margin-right: 0;
  padding-right: 0;
  border-right: 0;
}

.step-number {
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .12em;
}

.step h3 {
  margin: 30px 0 9px;
  font-size: 20px;
}

.step p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.local-section {
  background: var(--green);
  color: var(--white);
  padding: 68px 0;
}

.local-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 50px;
}

.local-section .eyebrow { color: #c9dbd4; }
.local-section h2 em { color: var(--white); }

.local-section p:not(.eyebrow) {
  max-width: 640px;
  margin-bottom: 0;
  color: rgba(255,255,255,.74);
}

.radius-badge {
  min-width: 165px;
  min-height: 125px;
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 13px;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 18px;
}

.radius-badge span {
  font-size: 55px;
  line-height: 1;
  font-weight: 700;
}

.radius-badge small {
  color: rgba(255,255,255,.68);
  font-size: 11px;
  line-height: 1.35;
}

.contact {
  background: var(--sand);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr .9fr;
  gap: 100px;
  align-items: center;
}

.contact-copy > p:not(.eyebrow) {
  max-width: 550px;
  color: var(--ink-soft);
  font-size: 17px;
}

.contact-card {
  padding: 35px;
  background: var(--white);
  border-radius: 22px;
  box-shadow: var(--shadow);
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.contact-icon {
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--sage);
  color: var(--green);
  font-weight: 800;
}

.contact-item small {
  display: block;
  color: var(--ink-soft);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.contact-item a, .contact-item strong {
  display: block;
  margin-top: 3px;
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
}

.contact-button {
  width: 100%;
  margin-top: 24px;
}

.site-footer {
  padding: 40px 0 25px;
  background: var(--green-dark);
  color: var(--white);
}

.footer-main {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
  padding-bottom: 35px;
  border-bottom: 1px solid rgba(255,255,255,.12);
}

.footer-brand { color: var(--white); }
.footer-brand .brand-mark { color: var(--white); border-color: rgba(255,255,255,.6); }
.footer-brand small { color: rgba(255,255,255,.6); }

.footer-links {
  display: flex;
  gap: 25px;
  font-size: 12px;
}

.footer-links a {
  color: rgba(255,255,255,.7);
  text-decoration: none;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-top: 20px;
  color: rgba(255,255,255,.45);
  font-size: 10px;
}

/* Mobile */

@media (max-width: 720px) {
  .brand-group {
    gap: 10px;
  }

  .adc-logo-link {
    width: 48px;
    height: 43px;
  }

  .adc-logo {
    width: 48px;
    height: 48px;
  }
}

@media (max-width: 900px) {
  .hero-grid,
  .expertise-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 55px;
  }

  .hero { min-height: auto; }
  .hero-card { max-width: 620px; width: 100%; margin: 0 auto; }

  .expertise-intro { position: static; }
  .solutions-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .step:nth-child(2) { border-right: 0; margin-right: 0; }
  .step:nth-child(3), .step:nth-child(4) { border-top: 1px solid var(--line); }
  .step:nth-child(3) { padding-top: 27px; }
}

@media (max-width: 720px) {
  .container { width: min(100% - 30px, 1120px); }

  .nav-wrap { min-height: 72px; }

  .menu-toggle { display: block; }
  .main-nav {
    display: none;
    position: absolute;
    left: 15px;
    right: 15px;
    top: 72px;
    padding: 15px;
    flex-direction: column;
    align-items: stretch;
    gap: 3px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: var(--white);
    box-shadow: var(--shadow);
  }

  .main-nav.is-open { display: flex; }
  .main-nav a { padding: 11px 13px; }
  .main-nav .nav-cta { text-align: center; margin-top: 5px; }

  .brand strong { font-size: 14px; }
  .brand small { font-size: 7px; }

  .hero-grid { padding: 65px 0; }
  .hero h1 { font-size: clamp(40px, 12vw, 55px); }
  .hero-text { font-size: 16px; }
  .hero-actions .button { width: 100%; }

  .hero-card { min-height: 390px; }
  .house-visual { height: 250px; }
  .roof { top: 2px; height: 82px; }
  .house { bottom: 42px; transform: translateX(-50%) scale(.85); }
  .ground-line { bottom: 41px; }

  .section { padding: 75px 0; }
  .section-heading { margin-bottom: 35px; }

  .solutions-grid,
  .audience-grid,
  .credentials {
    grid-template-columns: 1fr;
  }

  .solution-card { min-height: auto; }
  .audience-card { min-height: auto; padding: 30px; }
  .audience-card h3 { margin-top: 25px; }

  .steps { grid-template-columns: 1fr; }
  .step, .step:nth-child(2), .step:nth-child(3) {
    margin: 0;
    padding: 24px 0;
    border-right: 0;
    border-top: 1px solid var(--line);
  }
  .step:first-child { border-top: 0; }

  .local-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .radius-badge { min-width: 100%; }

  .contact-grid { gap: 40px; }
  .contact-card { padding: 25px; }

  .footer-main,
  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}

@media (max-width: 720px) {
  .brand-logo {
    width: 165px;
    height: 43px;
  }
}


/* =========================================================
   RÉALISATIONS
   ========================================================= */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.project-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--white);
  box-shadow: 0 12px 35px rgba(20, 48, 44, .07);
  transition: transform .2s ease, box-shadow .2s ease;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.project-visual {
  position: relative;
  height: 220px;
  overflow: hidden;
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  padding: 18px;
}

.project-visual > span {
  position: relative;
  z-index: 4;
  padding: 7px 11px;
  border-radius: 999px;
  background: rgba(255,255,255,.9);
  color: var(--green-dark);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.project-home {
  background: linear-gradient(135deg, #e9f4f2, #d6e8e5);
}

.project-office {
  background: linear-gradient(135deg, #edf1f4, #d8e1e5);
}

.project-climate {
  background: linear-gradient(135deg, #e8f5f8, #d2e9ee);
}

.project-work {
  background: linear-gradient(135deg, #e9f3f4, #d4e3e3);
}

.project-house {
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 150px;
  height: 125px;
  transform: translateX(-50%);
}

.project-body {
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 0;
  height: 82px;
  border-radius: 4px 4px 0 0;
  background: #f5f7f3;
  box-shadow: 0 -2px 0 rgba(0,39,61,.06);
}

.project-roof {
  position: absolute;
  z-index: 2;
  left: 0;
  top: -20px;
  width: 150px;
  height: 70px;
  background: #7d9a94;
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
}

.project-building {
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 180px;
  height: 140px;
  transform: translateX(-50%);
  padding: 30px 18px 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  background: #f7f8f6;
  border-radius: 8px 8px 0 0;
  box-shadow: 0 -2px 0 rgba(0,39,61,.06);
}

.project-building i {
  height: 30px;
  border-radius: 3px;
  background: #a9ced0;
  border: 4px solid #64898b;
}

.climate-orbit {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 150px;
  height: 150px;
  transform: translate(-50%, -40%);
  border: 1px solid rgba(0,129,204,.22);
  border-radius: 50%;
}

.climate-orbit span {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(0,129,204,.35);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.climate-orbit span:nth-child(2) {
  width: 90px;
  height: 90px;
}

.climate-orbit span:nth-child(3) {
  width: 136px;
  height: 136px;
}

.project-content {
  padding: 27px;
}

.project-content h3 {
  margin: 0 0 9px;
  font-size: 20px;
}

.project-content p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 20px;
}

.project-tags span {
  padding: 6px 10px;
  border-radius: 999px;
  background: #eef5f6;
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 700;
}

.section-cta {
  margin-top: 42px;
  text-align: center;
}

.section-cta p {
  margin-bottom: 16px;
  color: var(--ink-soft);
}


/* =========================================================
   PAGES LÉGALES
   ========================================================= */

.legal-page {
  min-height: 70vh;
  padding: 90px 0;
  background: var(--white);
}

.legal-content {
  max-width: 850px;
}

.legal-content h1 {
  margin: 0 0 45px;
  font-size: clamp(38px, 5vw, 58px);
  line-height: 1.05;
  letter-spacing: -.04em;
}

.legal-content h2 {
  margin: 40px 0 12px;
  font-size: 25px;
  line-height: 1.2;
}

.legal-content p {
  max-width: 780px;
  margin: 0 0 17px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.8;
}

.legal-content strong {
  color: var(--ink);
}

.legal-note {
  margin: 25px 0;
  padding: 18px 20px;
  border-left: 3px solid var(--accent);
  background: #eef6f8;
  color: var(--ink-soft);
  font-size: 14px;
}


/* =========================================================
   FOOTER LOGO / LIENS
   ========================================================= */

.footer-brand .brand-logo {
  width: 205px;
  height: 52px;
}

.footer-links {
  flex-wrap: wrap;
}

@media (max-width: 900px) {
  .projects-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }

  .project-visual {
    height: 200px;
  }

  .legal-page {
    padding: 65px 0;
  }

  .legal-content h1 {
    margin-bottom: 35px;
  }
}