:root{
  --ink:#1B1E22;
  --sage:#A7BCA9;
  --sage-line:rgba(53,58,63,0.16);
  --emerald-deep:#0E6B55;
  --ink-soft:#262A2F;
  --graphite:#353A3F;
  --emerald:#12876A;
  --emerald-bright:#17A883;
  --paper:#F6F7F5;
  --paper-tint:#EEF1EF;
  --slate:#4B5258;
  --mist:#DCE3E0;
  --mist-dark:#33383D;
  --white:#FFFFFF;
  --terracotta:#C1652F;
  --terracotta-bright:#D4763D;
  --max:1160px;
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:'IBM Plex Sans', sans-serif;
  color:var(--ink);
  background:var(--paper);
  line-height:1.6;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{
  font-family:'Space Grotesk', sans-serif;
  font-weight:700;
  line-height:1.1;
  letter-spacing:-0.01em;
}
a{color:inherit;text-decoration:none;}
ul{list-style:none;}
img,svg{display:block;max-width:100%;}
button{font-family:inherit;cursor:pointer;border:none;background:none;}
.mono{font-family:'IBM Plex Mono', monospace;}

:focus-visible{outline:2px solid var(--emerald-bright);outline-offset:3px;}

.wrap{max-width:var(--max);margin:0 auto;padding:0 28px;}
.eyebrow{
  font-family:'IBM Plex Mono', monospace;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--emerald);
  display:flex;align-items:center;gap:10px;
  margin-bottom:16px;
}
.eyebrow::before{content:'';width:7px;height:7px;border-radius:50%;background:var(--emerald);display:inline-block;}

section{padding:96px 0;}
@media (max-width:700px){section{padding:64px 0;}}

/* ---------- reveal-on-scroll ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease, transform .7s ease;}
.reveal.is-visible{opacity:1;transform:translateY(0);}
@media (prefers-reduced-motion: reduce){
  .reveal{opacity:1 !important;transform:none !important;transition:none !important;}
  *{animation-duration:0.001ms !important; animation-delay:0s !important;}
  html{scroll-behavior:auto;}
}

/* ============ NAV ============ */
nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  padding:20px 0;
  transition:background .35s ease, padding .35s ease, box-shadow .35s ease;
}
nav .wrap{display:flex;align-items:center;justify-content:space-between;}
.brand{display:flex;align-items:center;gap:12px;}
.brand .mark{width:34px;height:34px;}
.brand .word{font-family:'Space Grotesk';font-weight:700;font-size:18px;letter-spacing:0.01em;color:var(--white);transition:color .35s ease;}
.brand .word small{display:block;font-family:'IBM Plex Mono';font-weight:500;font-size:9px;letter-spacing:0.18em;color:#B7C0CB;margin-top:1px;}

.nav-links{display:flex;align-items:center;gap:34px;}
.nav-links a{
  font-size:14.5px;font-weight:500;color:var(--white);opacity:0.88;
  transition:opacity .2s ease, color .35s ease;
}
.nav-links a:hover{opacity:1;}
.nav-cta{
  font-family:'IBM Plex Mono';font-size:13px;font-weight:600;letter-spacing:0.03em;
  padding:10px 20px;border-radius:3px;border:1.5px solid rgba(255,255,255,.55);color:var(--white);
  transition:background .35s ease, border-color .35s ease, color .35s ease;
}
.nav-cta:hover{background:var(--emerald);border-color:var(--emerald);}

.nav-dropdown{position:relative;}
.nav-dropdown-menu{
  position:absolute;top:100%;left:50%;transform:translateX(-50%);
  background:var(--white);border-radius:6px;box-shadow:0 8px 24px rgba(0,0,0,.12);
  padding:8px;min-width:230px;display:flex;flex-direction:column;gap:2px;
  opacity:0;visibility:hidden;transform:translateX(-50%) translateY(4px);
  transition:opacity .2s ease, transform .2s ease, visibility .2s ease;
}
.nav-dropdown:hover .nav-dropdown-menu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0);}
.nav-dropdown-menu a{color:var(--graphite)!important;opacity:1!important;font-size:14px;padding:9px 12px;border-radius:4px;white-space:nowrap;}
.nav-dropdown-menu a:hover{background:var(--paper-tint);}

.mobile-panel a.sub{font-size:17px;font-weight:500;color:#B9C0C7;}

.mark-dark{display:block;}
.mark-light{display:none;}

nav.scrolled{background:rgba(246,247,245,.94);backdrop-filter:blur(8px);box-shadow:0 1px 0 var(--mist);padding:14px 0;}
nav.scrolled .word{color:var(--ink);}
nav.scrolled .word small{color:var(--slate);}
nav.scrolled .nav-links a{color:var(--graphite);opacity:1;}
nav.scrolled .nav-cta{border-color:var(--graphite);color:var(--graphite);}
nav.scrolled .nav-cta:hover{background:var(--emerald);border-color:var(--emerald);color:var(--white);}
nav.scrolled .mark-dark{display:none;}
nav.scrolled .mark-light{display:block;}

.burger{display:none;width:30px;height:22px;position:relative;}
.burger span{position:absolute;left:0;right:0;height:2px;background:var(--white);transition:background .35s ease, transform .25s ease, opacity .25s ease;}
.burger span:nth-child(1){top:0;}
.burger span:nth-child(2){top:10px;}
.burger span:nth-child(3){top:20px;}
nav.scrolled .burger span{background:var(--ink);}

.mobile-panel{
  position:fixed;inset:0;background:var(--ink);z-index:99;
  display:flex;flex-direction:column;align-items:center;justify-content:flex-start;gap:24px;
  padding:96px 24px 40px;overflow-y:auto;
  opacity:0;visibility:hidden;transition:opacity .3s ease;
}
.mobile-panel.open{opacity:1;visibility:visible;}
.mobile-panel a{font-family:'Space Grotesk';font-size:26px;font-weight:600;color:var(--white);}
.mobile-panel .mono{color:#9AA3AE;font-size:15px;}

@media (max-width:880px){
  .nav-links{display:none;}
  .burger{display:block;}
}

/* ============ HERO ============ */
.hero{
  background:var(--ink);
  padding-top:170px;padding-bottom:0;
  position:relative;overflow:hidden;
}
.hero .wrap{display:grid;grid-template-columns:1.1fr 0.9fr;gap:40px;align-items:center;position:relative;z-index:2;}
.hero h1{font-size:clamp(34px,4.6vw,56px);color:var(--white);margin-bottom:22px;}
.hero h1 em{font-style:normal;color:var(--emerald-bright);}
.hero p.lead{font-size:17.5px;color:#AEB6BE;max-width:480px;margin-bottom:34px;}
.hero-ctas{display:flex;align-items:center;gap:28px;flex-wrap:wrap;}
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:'IBM Plex Mono';font-size:13.5px;font-weight:600;letter-spacing:0.03em;
  padding:15px 26px;border-radius:3px;
  background:var(--terracotta);color:var(--white);
  box-shadow:0 2px 6px rgba(193,101,47,0.28);
  transition:background .2s ease, transform .2s ease;
}
.btn:hover{background:var(--terracotta-bright);transform:translateY(-1px);}
.tel-link{display:inline-flex;align-items:center;gap:10px;color:var(--white);font-weight:600;font-size:15.5px;}
.tel-link svg{width:18px;height:18px;stroke:var(--emerald-bright);}
.tel-link span.mono{color:#9AA3AE;font-size:12px;display:block;font-weight:500;}

.hero-mark{position:relative;display:flex;justify-content:center;align-items:center;height:340px;}
.hero-mark svg{width:300px;height:300px;}
@media (max-width:880px){
  .hero .wrap{grid-template-columns:1fr;}
  .hero-mark{height:220px;order:-1;}
  .hero-mark svg{width:190px;height:190px;}
  .hero{padding-top:120px;}
}

.trail-bar{transform-origin:center;opacity:0;animation:trailIn .55s ease forwards;}
.trail-1{animation-delay:.15s;}
.trail-2{animation-delay:.30s;}
.trail-3{animation-delay:.45s;}
@keyframes trailIn{from{opacity:0;transform:translate(-14px,-14px);}to{opacity:1;transform:translate(0,0);}}
.wseg{stroke-dasharray:100;stroke-dashoffset:100;animation:drawSeg .5s ease forwards;}
.wseg-1{animation-delay:.62s;}
.wseg-2{animation-delay:.72s;}
.wseg-3{animation-delay:.82s;}
.wseg-4{animation-delay:.92s;}
@keyframes drawSeg{to{stroke-dashoffset:0;}}

/* spec strip */
.spec-strip{border-top:1px solid var(--mist-dark);margin-top:64px;}
.spec-strip .wrap{display:grid;grid-template-columns:repeat(4,1fr);}
.spec-item{padding:22px 26px;border-left:1px solid var(--mist-dark);}
.spec-item:first-child{border-left:none;padding-left:0;}
.spec-item .mono{font-size:11px;letter-spacing:0.12em;color:#7C8694;display:block;margin-bottom:6px;}
.spec-item .val{font-size:14.5px;color:var(--white);font-weight:500;}
@media (max-width:880px){
  .spec-strip .wrap{grid-template-columns:repeat(2,1fr);}
  .spec-item:nth-child(3){border-left:none;padding-left:0;}
}
@media (max-width:520px){
  .spec-strip .wrap{grid-template-columns:1fr;}
  .spec-item{border-left:none !important;border-top:1px solid var(--mist-dark);padding-left:0 !important;}
  .spec-item:first-child{border-top:none;}
}

/* ============ SECTION HEADS ============ */
.head-row{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:56px;flex-wrap:wrap;}
.head-row h2{font-size:clamp(26px,3vw,36px);}
.head-row p{color:var(--slate);max-width:380px;font-size:15.5px;}

/* ============ SERVICES (catalogue) ============ */
.catalog{border-top:1px solid var(--mist);}
.catalog-row{
  display:grid;grid-template-columns:90px 280px 1fr;gap:28px;align-items:start;
  padding:28px 0;border-bottom:1px solid var(--mist);
  transition:background .25s ease;
}
.catalog-row:hover{background:rgba(18,135,106,0.045);}
.catalog-row .code{font-family:'IBM Plex Mono';font-weight:600;font-size:13px;color:var(--emerald);letter-spacing:0.04em;padding-top:4px;}
.catalog-row h3{font-size:20px;color:var(--ink);display:flex;align-items:center;gap:10px;}
.catalog-row h3 svg{width:20px;height:20px;stroke:var(--emerald);flex-shrink:0;}
.catalog-row p{color:var(--slate);font-size:15px;max-width:520px;text-align:justify;}
@media (max-width:760px){
  .catalog-row{grid-template-columns:1fr;gap:8px;padding:22px 0;}
  .catalog-row .code{padding-top:0;}
}

/* ============ POURQUOI ============ */
.why-section{background:var(--paper-tint);}
.faq-list{border-top:1px solid var(--mist);max-width:760px;}
.faq-item{padding:22px 0;border-bottom:1px solid var(--mist);}
.faq-item h3{font-size:16px;font-weight:600;color:var(--ink);margin-bottom:6px;}
.faq-item p{color:var(--slate);font-size:15px;}
.why-list{border-top:1px solid var(--mist);max-width:760px;}
.why-item{display:grid;grid-template-columns:230px 1fr;gap:24px;padding:26px 0;border-bottom:1px solid var(--mist);}
.why-item .label{display:flex;align-items:center;gap:10px;font-family:'IBM Plex Mono';font-size:13px;font-weight:600;letter-spacing:0.06em;color:var(--graphite);text-transform:uppercase;}
.why-item .label svg{width:16px;height:16px;stroke:var(--emerald);flex-shrink:0;}
.why-item p{color:var(--slate);font-size:15px;}
@media (max-width:700px){
  .why-item{grid-template-columns:1fr;gap:8px;}
}

/* ============ ZONE ============ */
.zone-grid{display:grid;grid-template-columns:0.85fr 1.15fr;gap:56px;align-items:start;}
.zone-grid p{color:var(--slate);font-size:15.5px;margin-bottom:22px;max-width:420px;}
.town-list{display:flex;flex-wrap:wrap;gap:10px;}
.town-pill{
  font-family:'IBM Plex Mono';font-size:12.5px;font-weight:500;letter-spacing:0.03em;
  border:1px solid var(--mist);color:var(--graphite);padding:8px 14px;border-radius:3px;
}
.map-wrap{position:relative;border-radius:4px;overflow:hidden;border:1px solid var(--mist);aspect-ratio:4/3;background:var(--graphite);}
.map-wrap iframe{width:100%;height:100%;border:0;display:block;filter:grayscale(1) contrast(1.05) brightness(0.95);}
.map-wrap::after{content:'';position:absolute;inset:0;background:var(--emerald);opacity:0.22;mix-blend-mode:color;pointer-events:none;}
@media (max-width:880px){.zone-grid{grid-template-columns:1fr;}}

/* ============ SOUMISSION ============ */
.soumission-section{background:var(--paper-tint);}
.soum-grid{display:grid;grid-template-columns:0.8fr 1.2fr;gap:56px;align-items:start;}
.contact-card .mono{color:var(--emerald);font-size:11.5px;letter-spacing:0.12em;}
.contact-line{display:flex;align-items:center;gap:14px;margin:22px 0;padding-bottom:18px;border-bottom:1px solid var(--mist);}
.contact-line svg{width:20px;height:20px;stroke:var(--emerald);flex-shrink:0;}
.contact-line a, .contact-line span{font-size:16px;font-weight:600;color:var(--ink);}
.contact-line .ctx{display:block;font-size:12.5px;font-weight:400;color:var(--slate);margin-top:2px;}
.note{font-size:14px;color:var(--slate);margin-top:26px;}

.form-card{background:var(--white);border:1px solid var(--mist);border-radius:6px;padding:40px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:18px;}
.field{display:flex;flex-direction:column;gap:7px;}
.field.full{grid-column:1/-1;}
.field label{font-size:12.5px;font-weight:600;color:var(--graphite);font-family:'IBM Plex Mono';letter-spacing:0.02em;}
.field input,.field select,.field textarea{
  font-family:'IBM Plex Sans';font-size:15px;color:var(--ink);
  border:1.5px solid var(--mist);border-radius:3px;padding:11px 13px;background:var(--paper);
  transition:border-color .2s ease, background .2s ease;
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--emerald);background:var(--white);outline:none;}
.field textarea{resize:vertical;min-height:96px;font-family:'IBM Plex Sans';}
.hp-field{position:absolute;left:-9999px;}
.submit-btn{width:100%;justify-content:center;margin-top:6px;padding:16px 26px;font-size:14px;}
@media (max-width:880px){.soum-grid{grid-template-columns:1fr;}}
@media (max-width:560px){.form-row{grid-template-columns:1fr;}.form-card{padding:26px;}}

.form-success, .form-error{
  display:flex;align-items:flex-start;gap:16px;background:var(--white);border:1.5px solid var(--emerald);
  border-radius:6px;padding:32px;
}
.form-success[hidden], .form-error[hidden]{display:none;}
.form-success svg{width:26px;height:26px;stroke:var(--emerald);flex-shrink:0;}
.form-error{border-color:#B3463D;}
.form-error svg{stroke:#B3463D;}
.form-success h3,.form-error h3{font-size:18px;margin-bottom:6px;}
.form-success p,.form-error p{color:var(--slate);font-size:14.5px;}

/* ============ FOOTER ============ */
footer{background:var(--ink);color:#9AA3AE;padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:56px;border-bottom:1px solid var(--mist-dark);}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:14.5px;max-width:280px;}
footer h4{font-family:'IBM Plex Mono';font-size:12px;letter-spacing:0.1em;text-transform:uppercase;color:#6B7480;margin-bottom:18px;}
footer ul li{margin-bottom:11px;font-size:14.5px;}
footer ul li a:hover{color:var(--white);}
.footer-bottom{display:flex;justify-content:space-between;padding:24px 0;font-size:12.5px;color:#6B7480;flex-wrap:wrap;gap:10px;}
@media (max-width:760px){.footer-grid{grid-template-columns:1fr;gap:34px;}}

/* ============ MOBILE STICKY CTA ============ */
.mobile-cta-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:90;
  background:var(--ink);border-top:1px solid var(--mist-dark);
}
.mobile-cta-bar .inner{display:grid;grid-template-columns:1fr 1fr;}
.mobile-cta-bar a{
  display:flex;align-items:center;justify-content:center;gap:9px;
  padding:16px 10px;font-family:'IBM Plex Mono';font-size:13.5px;font-weight:600;color:var(--white);
}
.mobile-cta-bar a svg{width:17px;height:17px;stroke:currentColor;}
.mobile-cta-bar a.call{background:var(--emerald);}
@media (max-width:760px){
  .mobile-cta-bar{display:block;}
  body{padding-bottom:58px;}
}

/* ============ CALCULATEUR D'ESTIMATION ============ */
.calc-section{background:var(--paper-tint);}
.calc-grid{display:grid;grid-template-columns:1.1fr 0.9fr;gap:32px;align-items:start;}
.calc-form{background:var(--white);border:1px solid var(--mist);border-radius:6px;padding:32px;}
.calc-field{margin-bottom:22px;}
.calc-field:last-child{margin-bottom:0;}
.calc-label{display:block;font-size:12.5px;font-weight:600;color:var(--graphite);font-family:'IBM Plex Mono';letter-spacing:0.02em;margin-bottom:10px;}
.calc-range{width:100%;accent-color:var(--emerald);}
.calc-pills{display:flex;flex-wrap:wrap;gap:8px;}
.calc-pill{
  padding:9px 14px;border-radius:20px;font-size:13px;font-weight:600;font-family:'IBM Plex Sans';
  border:1.5px solid var(--mist);background:var(--white);color:var(--graphite);
  transition:background .2s ease, border-color .2s ease, color .2s ease;
}
.calc-pill.active{border-color:var(--emerald);background:rgba(18,135,106,0.08);color:var(--emerald);}
.calc-row{display:flex;gap:20px;margin-bottom:22px;}
.calc-stepper{display:flex;align-items:center;border:1.5px solid var(--mist);border-radius:6px;width:fit-content;}
.calc-step-btn{width:34px;height:34px;font-size:16px;color:var(--graphite);}
.calc-step-val{width:32px;text-align:center;font-size:14px;font-weight:600;color:var(--graphite);}
.calc-checkbox{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--graphite);margin-bottom:10px;cursor:pointer;}
.calc-checkbox:last-child{margin-bottom:0;}

.calc-result{background:var(--ink);border-radius:6px;padding:32px;color:var(--white);position:sticky;top:110px;}
.calc-result-label{font-family:'IBM Plex Mono';font-size:11.5px;letter-spacing:0.12em;text-transform:uppercase;opacity:0.7;margin-bottom:10px;}
.calc-result-value{font-family:'Space Grotesk';font-size:28px;font-weight:700;color:var(--white);margin-bottom:12px;}
.calc-result-note{font-size:12.5px;opacity:0.65;line-height:1.5;margin-bottom:20px;}
.calc-cta{width:100%;justify-content:center;text-align:center;line-height:1.4;}

@media (max-width:880px){
  .calc-grid{grid-template-columns:1fr;}
  .calc-result{position:static;}
}