:root{
  --green:#8fcf16;
  --green-dark:#6ea80a;
  --ink:#101820;
  --muted:#5f6872;
  --light:#f5f7f3;
  --white:#fff;
  --line:#dfe5dc;
  --shadow:0 18px 50px rgba(16,24,32,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--ink);background:#fff;line-height:1.6}
img{max-width:100%;display:block}
a{color:inherit}
.container{width:min(1180px,calc(100% - 40px));margin-inline:auto}
.skip-link{position:absolute;left:-9999px}
.skip-link:focus{left:20px;top:20px;z-index:999;background:#fff;padding:10px}
.topbar{background:var(--ink);color:#fff;font-size:.86rem}
.topbar-inner{min-height:38px;display:flex;justify-content:space-between;align-items:center;gap:20px}
.topbar a{color:#fff;text-decoration:none}
.site-header{position:sticky;top:0;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);z-index:50;border-bottom:1px solid var(--line)}
.nav-wrap{min-height:92px;display:flex;align-items:center;gap:26px}
.brand{
    width:350px;
    flex:0 0 auto;
}
.brand img{
    width:100%;
    height:auto;
    display:block;
}
.main-nav{display:flex;align-items:center;gap:32px;margin-left:auto}
.main-nav a{text-decoration:none;font-weight:700;font-size:1rem}
.main-nav a:hover{color:var(--green-dark)}
.button{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    text-align:center;
    gap:8px;
    min-height:52px;
    padding:14px 28px;
    border-radius:8px;
    text-decoration:none;
    font-weight:700;
    line-height:1.3;
}
.button-primary{background:linear-gradient(135deg,var(--green),#b1db1e);color:#fff;box-shadow:0 8px 24px rgba(143,207,22,.28);white-space:nowrap;}
.button-primary:hover{transform:translateY(-1px)}
.button-secondary{border-color:var(--ink);background:#fff}
.menu-toggle{display:none}

.hero{background:linear-gradient(110deg,#f4f7f1 0 58%,#fff 58%);padding:40px 0 82px}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;align-items:center;gap:64px}
.eyebrow{text-transform:uppercase;letter-spacing:1.4px;color:var(--green-dark);font-weight:900;font-size:.86rem}
.eyebrow.center{text-align:center}
.hero h1{font-size:clamp(2.7rem,5vw,4.8rem);line-height:1.02;letter-spacing:-2.6px;margin:.25em 0 .35em;max-width:780px}
.hero h1 span{color:var(--green-dark)}
.hero-slogan{font-size:1.35rem;font-weight:800;margin:0 0 4px}
.hero-promise{color:var(--green-dark);font-weight:800;margin:0 0 20px}
.hero-text{font-size:1.05rem;color:var(--muted);max-width:660px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 20px}
.hero-trust{display:flex;flex-wrap:wrap;gap:18px;font-size:.9rem;font-weight:700;color:#3e474f}
.hero-trust span:before{content:"✓";color:var(--green-dark);margin-right:7px}
.hero-visual{position:relative}
.hero-visual img{width:100%;height:590px;object-fit:cover;border-radius:22px;box-shadow:var(--shadow)}
.hero-badge{position:absolute;right:-16px;bottom:28px;background:rgba(16,24,32,.94);color:#fff;padding:16px 20px;border-radius:12px;box-shadow:var(--shadow)}
.hero-badge strong,.hero-badge span{display:block}
.hero-badge strong{text-transform:uppercase;color:#d8ff63}

.services{padding:76px 0}
.section-title{text-align:center;font-size:clamp(2rem,3vw,3rem);line-height:1.15;margin:0 0 42px}
.service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.service-card{padding:30px 24px;border:1px solid var(--line);border-radius:16px;background:#fff}
.service-card.featured{border-color:var(--green);box-shadow:0 12px 35px rgba(143,207,22,.18)}
.service-card .icon{font-size:2rem}
.service-card h3{font-size:1.2rem}
.service-card p{color:var(--muted)}

.split-section{padding:86px 0;background:var(--light)}
.split-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:center}
.split-section h2{font-size:clamp(2.2rem,4vw,3.6rem);line-height:1.1;margin:.2em 0}
.check-list{list-style:none;padding:0;margin:24px 0}
.check-list li{margin:10px 0}
.check-list li:before{content:"✓";color:var(--green-dark);font-weight:900;margin-right:10px}
.quote-card{background:var(--ink);color:#fff;padding:44px;border-radius:20px;box-shadow:var(--shadow)}
.quote-card h3 {
    color: #8fcf16;
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.quote-card p {
    font-size: 1.15rem;
    line-height: 1.8;
    margin: 0;
}

.process{padding:86px 0;background:var(--ink);color:#fff}
.process .section-title{color:#fff}
.process-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px}
.step{padding:22px;border:1px solid rgba(255,255,255,.13);border-radius:14px}
.step span{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:50%;background:var(--green);color:#fff;font-weight:900}
.step p{color:#cbd2d8;font-size:.92rem}

.realisation{padding:86px 0}
.realisation h2{font-size:clamp(2.2rem,4vw,3.5rem);margin:.2em 0}
.lead{color:var(--muted);max-width:720px}
.realisation-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:34px}
.realisation-card{margin:0;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow)}
.realisation-card img{display:block;width:100%;height:300px;object-fit:cover;background:#eef2ec}
.realisation-card figcaption{display:block;padding:18px 20px}
.realisation-card figcaption strong{display:block;font-size:1.05rem;line-height:1.35;color:var(--ink);margin-bottom:6px}
.realisation-card figcaption span{display:block;color:var(--muted);font-size:.94rem;line-height:1.55}
.realisation-card.is-hidden{display:none}
.realisation-card[hidden]{display:none!important}
.realisation-more-wrap{margin-top:28px;text-align:center}
.realisation-more{width:auto}

.faq{padding:86px 0;background:var(--light)}
.faq details{max-width:850px;margin:14px auto;background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 22px}
.faq summary{font-weight:800;cursor:pointer}
.faq details p{color:var(--muted)}


form{display:grid;gap:16px;background:#fff;padding:28px;border-radius:18px;box-shadow:var(--shadow);border:1px solid var(--line)}
label{display:grid;gap:7px;font-weight:700}
input,select,textarea{width:100%;padding:14px 15px;border:1px solid #cfd7cd;border-radius:8px;font:inherit}
textarea{resize:vertical}

footer{background:#0b1116;color:#fff;padding:34px 0}
.footer-grid {
    display: grid;
    grid-template-columns: 340px 1fr auto;
    align-items: center;
    gap: 30px;
}
.footer-grid img {
    width: 320px;
    max-width: 100%;
    height: auto;
}

@media(max-width:980px){
  .topbar-inner{flex-wrap:wrap;justify-content:center;padding:8px 0}
  .nav-cta{display:none}
  .menu-toggle{display:block;margin-left:auto;background:#fff;border:1px solid var(--line);padding:10px 14px;border-radius:8px;font-weight:800}
  .main-nav{display:none;position:absolute;left:20px;right:20px;top:92px;background:#fff;padding:20px;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start}
  .main-nav.open{display:flex}
  .hero{padding-top:48px;background:#f5f7f3}
  .hero-grid,.split-grid,.contact-grid{grid-template-columns:1fr}
  .hero-visual img{height:500px}
  .service-grid{grid-template-columns:repeat(2,1fr)}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .placeholder-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;text-align:center}
  .footer-grid img{margin:auto}
}
@media(max-width:620px){
  .container{width:min(100% - 28px,1180px)}
  .brand{width:128px}
  .nav-wrap{min-height:74px}
  .main-nav{top:74px}
  .hero{padding:42px 0 54px}
  .hero h1{font-size:2.65rem;letter-spacing:-1.7px}
  .hero-actions{
    display:flex;
    flex-direction:column;
    align-items:stretch;
    width:100%;
    gap:14px;
}

.hero-actions .button{
    width:100%;
    margin:0;
    box-sizing:border-box;
}
  .button{width:100%}
  .hero-visual img{height:410px}
  .hero-badge{position:static;margin-top:12px}
  .service-grid,.process-grid{grid-template-columns:1fr}
  .split-section,.process,.realisation,.faq,.contact,.services{padding:62px 0}
  .realisation-grid{grid-template-columns:1fr}
  .realisation-card img{height:auto;max-height:520px;object-fit:cover}
}

/* Base accessibility and interaction */
button,input,select,textarea{font:inherit}
button{cursor:pointer}
:focus-visible{outline:3px solid rgba(143,207,22,.55);outline-offset:3px}
[hidden]{display:none!important}

.button{border:0;transition:transform .2s ease,box-shadow .2s ease,background .2s ease}
.button-primary{background:linear-gradient(135deg,var(--green),#b1db1e);color:#fff;box-shadow:0 8px 24px rgba(143,207,22,.28);white-space:nowrap}
.button-primary:hover{transform:translateY(-1px);box-shadow:0 12px 28px rgba(143,207,22,.32)}
.button-secondary{display:inline-flex;align-items:center;justify-content:center;padding:14px 24px;border:2px solid var(--ink);border-radius:8px;color:var(--ink);background:#fff;text-decoration:none;font-weight:700;margin-left:0}
.button-secondary:hover{background:var(--ink);color:#fff}

/* Dedicated form pages */
.form-header{background:var(--ink);padding:18px 0;position:sticky;top:0;z-index:50;box-shadow:0 8px 26px rgba(0,0,0,.16)}
.form-header .container{display:flex;align-items:center;justify-content:space-between;gap:24px}
.form-logo{display:block;width:230px;flex:0 0 auto}
.form-logo img{width:100%;height:auto}
.form-page{background:var(--light);padding:58px 0 82px}
.form-intro{text-align:center;max-width:850px;margin-bottom:34px}
.form-intro h1{font-size:clamp(2.1rem,4vw,3.6rem);line-height:1.12;margin:.2em 0 .35em}
.form-intro>p:not(.eyebrow){color:var(--muted);font-size:1.05rem}
.form-zone{font-weight:800;color:var(--ink)!important}
.project-form{max-width:900px;margin:0 auto;gap:22px;padding:34px}
.project-form fieldset{border:1px solid var(--line);border-radius:14px;padding:24px;margin:0;min-width:0}
.project-form legend{font-size:1.25rem;font-weight:900;padding:0 10px;color:var(--ink)}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.form-full{grid-column:1/-1}
.form-question{font-weight:800;margin:4px 0 14px}
.form-help{color:var(--muted);font-size:.92rem;margin:14px 0 0}
.radio-group{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.radio-card{position:relative;cursor:pointer}
.radio-card input{position:absolute;opacity:0;pointer-events:none}
.radio-card span{display:flex;align-items:center;justify-content:center;min-height:58px;padding:12px;border:2px solid var(--line);border-radius:10px;background:#fff;text-align:center;transition:.2s ease}
.radio-card input:checked+span{border-color:var(--green);background:#f4fbe8;color:var(--green-dark);box-shadow:0 0 0 3px rgba(143,207,22,.12)}
.radio-card input:focus-visible+span{outline:3px solid rgba(143,207,22,.45);outline-offset:2px}
.conditional-field{margin-top:16px;padding:18px;background:#f8faf6;border-radius:12px;border:1px solid var(--line)}
.input-unit{font-size:.88rem;color:var(--muted);font-weight:600}
.form-alert{margin-top:18px;padding:18px 20px;border-left:5px solid #c94343;background:#fff3f3;border-radius:10px;color:#782020}
.form-alert p{margin:.35em 0 0}
.photo-upload{padding:26px;border:2px dashed #b8c4b5;border-radius:14px;background:#fafcf8;text-align:center;cursor:pointer}
.photo-upload input{margin-top:16px;background:#fff}
.photo-title{font-size:1.2rem;font-weight:900}
.photo-info{margin-top:10px;font-weight:800;color:var(--green-dark)}

.callback-choice{margin-top:18px;padding:16px 18px;border:1px solid var(--line);border-radius:12px;background:#fafcf8}
.callback-choice label{display:flex;align-items:flex-start;gap:12px;font-weight:700;cursor:pointer}
.callback-choice input[type=checkbox]{position:static;opacity:1;pointer-events:auto;width:22px;height:22px;flex:0 0 auto;margin-top:2px;accent-color:var(--green-dark)}
.form-consent{padding:20px;border:1px solid var(--line);border-radius:12px;background:#fafcf8}
.form-consent label{display:flex;grid-template-columns:none;align-items:flex-start;gap:12px;font-weight:600}
.form-consent input[type=checkbox]{position:static;opacity:1;pointer-events:auto;width:22px;height:22px;flex:0 0 auto;margin-top:2px;accent-color:var(--green-dark)}
.form-consent a{display:inline-block;margin-top:10px;color:var(--green-dark);font-weight:800}
.form-submit{text-align:center}
.form-submit .button{max-width:100%}
.form-submit p{color:var(--muted);font-size:.92rem}
.form-footer{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;align-items:start}
.form-footer p{margin:0}
.form-footer a{text-decoration:none}
.form-footer a:hover{text-decoration:underline}

/* Legal pages */
.legal-page{padding:64px 0 80px}
.legal-page .container{max-width:900px}
.legal-page h1{font-size:clamp(2.2rem,4vw,3.5rem)}
.legal-page h2{margin-top:2rem}

@media(max-width:760px){
  .form-header .container{gap:14px}
  .form-logo{width:160px}
  .form-header .button{width:auto;padding:12px 16px;min-height:46px;font-size:.9rem}
  .form-page{padding:38px 0 58px}
  .project-form{padding:20px}
  .project-form fieldset{padding:19px 16px}
  .form-grid,.radio-group,.form-footer{grid-template-columns:1fr}
  .form-full{grid-column:auto}
}

@media(max-width:620px){
  .hero-actions{display:flex;flex-direction:column;align-items:stretch;width:100%;gap:14px}
  .hero-actions .button,.hero-actions .button-secondary{width:100%;margin-left:0!important;margin-right:0!important;box-sizing:border-box}
}


/* Réalisations mobile : 3 visibles, les suivantes via un bouton sans dépendre de JavaScript */
.realisation-toggle{position:absolute;opacity:0;pointer-events:none}
.realisation-more-close{display:none}
@media (max-width:820px){
  .realisation-grid .realisation-extra{display:none}
  .realisation-toggle:checked + .realisation-grid .realisation-extra{display:block}
  .realisation-more-wrap{display:block;margin-top:28px;text-align:center}
  .realisation-toggle:checked ~ .realisation-more-wrap .realisation-more-open{display:none}
  .realisation-toggle:checked ~ .realisation-more-wrap .realisation-more-close{display:inline}
}
@media (min-width:821px){
  .realisation-more-wrap{display:none!important}
}