/* ============================================
   NEGATP Sarl — style.css
   Palette : bleu marine (identité), orange chantier, gris béton
   Signature visuelle : cadre en arche, inspiré des buses/dalots
   fabriqués par l'entreprise (visible sur les photos de chantier).
   Codes monospace "tamponnés" inspirés des marquages coulés
   sur le béton (ex. "05x09 15904.5").
   ============================================ */

:root{
  --navy-950:#0a1e33;
  --navy-900:#0d2a45;
  --navy-800:#12314f;
  --navy-700:#1a4670;
  --orange-600:#d9541f;
  --orange-500:#e8622c;
  --orange-400:#f0844f;
  --green-600:#2e7d54;
  --concrete-900:#3d3b36;
  --concrete-500:#8f8b82;
  --concrete-300:#c9c5bb;
  --concrete-100:#efece5;
  --paper:#f6f4ef;
  --white:#ffffff;
  --ink:#1c1b18;

  --font-display:'Barlow Condensed', sans-serif;
  --font-body:'Work Sans', sans-serif;
  --font-mono:'IBM Plex Mono', monospace;

  --radius-arch: 999px 999px 0 0;
  --container: 1180px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--paper);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; margin:0; padding:0; }
h1,h2,h3,h4{
  font-family:var(--font-display);
  text-transform:uppercase;
  letter-spacing:0.01em;
  line-height:1.05;
  margin:0 0 0.4em;
  color:var(--navy-900);
}
h1{ font-weight:800; font-size:clamp(2.4rem,6vw,4.6rem); }
h2{ font-weight:700; font-size:clamp(1.8rem,4vw,2.8rem); }
h3{ font-weight:700; font-size:1.35rem; }
p{ margin:0 0 1em; }
.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
section{ padding:88px 0; }
.section-alt{ background:var(--concrete-100); }
.section-navy{ background:var(--navy-900); color:var(--concrete-100); }
.section-navy h2, .section-navy h3{ color:var(--white); }

/* --- Focus visibility --- */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible{
  outline:3px solid var(--orange-500);
  outline-offset:2px;
}

/* --- Code tag : marquage "tampon béton" --- */
.stamp{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:0.78rem;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--orange-600);
  border:1.5px dashed var(--orange-500);
  padding:5px 12px;
  border-radius:3px;
  transform:rotate(-1deg);
  background:rgba(232,98,44,0.06);
}
.section-navy .stamp{
  color:var(--orange-400);
  border-color:var(--orange-400);
  background:rgba(240,132,79,0.1);
}

/* --- Arche signature (forme des buses/dalots) --- */
.arch-frame{
  position:relative;
  border-radius:var(--radius-arch);
  overflow:hidden;
  background:var(--concrete-300);
}
.arch-frame img, .arch-frame .ph{
  width:100%; height:100%;
  object-fit:cover;
  display:block;
}
.arch-badge{
  width:64px; height:80px;
  border-radius:var(--radius-arch);
  background:var(--navy-800);
  color:var(--orange-400);
  display:flex;
  align-items:flex-end;
  justify-content:center;
  padding-bottom:10px;
  font-family:var(--font-mono);
  font-weight:600;
  font-size:0.72rem;
  flex-shrink:0;
  border:2px solid var(--orange-500);
}

/* --- Placeholder image (avant ajout des vraies photos) --- */
.ph{
  width:100%; height:100%;
  display:flex;
  align-items:center;
  justify-content:center;
  background:repeating-linear-gradient(135deg, var(--concrete-300), var(--concrete-300) 10px, var(--concrete-100) 10px, var(--concrete-100) 20px);
  color:var(--concrete-900);
  font-family:var(--font-mono);
  font-size:0.75rem;
  text-align:center;
  padding:8px;
}

/* ============ HEADER ============ */
.site-header{
  position:sticky; top:0; z-index:100;
  background:var(--white);
  border-bottom:3px solid var(--navy-900);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:12px 24px;
  max-width:var(--container);
  margin:0 auto;
}
.brand{ display:flex; align-items:center; gap:12px; }
.brand img{ height:52px; width:auto; }
.brand-text{
  font-family:var(--font-mono);
  font-size:0.7rem;
  letter-spacing:0.06em;
  color:var(--concrete-900);
  display:none;
}
.main-nav{ display:flex; align-items:center; gap:2px; }
.main-nav a{
  font-family:var(--font-display);
  text-transform:uppercase;
  font-weight:600;
  letter-spacing:0.03em;
  font-size:1rem;
  padding:10px 16px;
  border-radius:4px;
  color:var(--navy-900);
  transition:background .15s, color .15s;
}
.main-nav a:hover{ background:var(--concrete-100); }
.main-nav a.active{ color:var(--orange-600); }
.header-cta{
  display:flex; align-items:center; gap:10px;
}
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-display);
  text-transform:uppercase;
  font-weight:700;
  letter-spacing:0.03em;
  font-size:0.98rem;
  padding:12px 22px;
  border-radius:4px;
  border:2px solid transparent;
  cursor:pointer;
  transition:transform .15s, background .15s, color .15s, border-color .15s;
}
.btn:hover{ transform:translateY(-2px); }
.btn-orange{ background:var(--orange-500); color:var(--white); }
.btn-orange:hover{ background:var(--orange-600); }
.btn-navy{ background:var(--navy-900); color:var(--white); }
.btn-navy:hover{ background:var(--navy-950); }
.btn-outline{ background:transparent; border-color:var(--navy-900); color:var(--navy-900); }
.btn-outline:hover{ background:var(--navy-900); color:var(--white); }
.btn-outline-light{ background:transparent; border-color:var(--white); color:var(--white); }
.btn-outline-light:hover{ background:var(--white); color:var(--navy-900); }
.btn-sm{ padding:9px 16px; font-size:0.85rem; }

.nav-toggle{
  display:none;
  background:none; border:none; cursor:pointer;
  padding:8px;
}
.nav-toggle span{
  display:block; width:26px; height:3px; margin:5px 0;
  background:var(--navy-900);
}

/* ============ HERO ============ */
.hero{
  position:relative;
  background:linear-gradient(180deg, var(--navy-950) 0%, var(--navy-800) 100%);
  color:var(--white);
  overflow:hidden;
  padding:70px 0 0;
}
.hero-grid{
  display:grid;
  grid-template-columns:1.1fr 0.9fr;
  gap:40px;
  align-items:center;
}
.hero-eyebrow{ margin-bottom:22px; }
.hero h1{ color:var(--white); margin-bottom:0.3em; }
.hero h1 em{
  font-style:normal;
  color:var(--orange-400);
}
.hero-lede{
  font-size:1.15rem;
  color:var(--concrete-300);
  max-width:46ch;
  margin-bottom:2em;
}
.hero-actions{ display:flex; gap:14px; flex-wrap:wrap; margin-bottom:56px; }
.hero-visual{
  height:420px;
  align-self:end;
}
.hero-strip{
  border-top:1px solid rgba(255,255,255,0.14);
  padding:22px 0;
}
.hero-strip .container{
  display:flex;
  gap:0;
  overflow-x:auto;
}
.hero-strip-item{
  flex:1 0 auto;
  min-width:190px;
  padding:0 26px;
  border-left:1px solid rgba(255,255,255,0.14);
  font-family:var(--font-mono);
  font-size:0.78rem;
  letter-spacing:0.05em;
  color:var(--concrete-300);
  text-transform:uppercase;
}
.hero-strip-item:first-child{ padding-left:0; border-left:none; }
.hero-strip-item strong{
  display:block;
  font-family:var(--font-display);
  font-size:1.7rem;
  color:var(--white);
  text-transform:none;
  letter-spacing:0;
}

/* ============ INTRO / SPLIT ============ */
.split{
  display:grid;
  grid-template-columns:0.9fr 1.1fr;
  gap:56px;
  align-items:center;
}
.split.reverse{ grid-template-columns:1.1fr 0.9fr; }
.split.reverse .split-visual{ order:2; }
.split-visual .arch-frame{ height:380px; }

/* ============ SERVICES GRID ============ */
.services-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(270px,1fr));
  gap:22px;
}
.service-card{
  background:var(--white);
  border:1px solid var(--concrete-300);
  border-radius:6px;
  padding:26px 24px 24px;
  display:flex;
  gap:18px;
  transition:border-color .15s, transform .15s;
}
.service-card:hover{ border-color:var(--orange-500); transform:translateY(-3px); }
.service-card .arch-badge{ width:52px; height:66px; font-size:0.62rem; }
.service-card h3{ font-size:1.1rem; margin-bottom:0.3em; }
.service-card p{ font-size:0.92rem; color:var(--concrete-900); margin:0; }

/* ============ CARDS / VALUES ============ */
.value-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(240px,1fr));
  gap:24px;
}
.value-card{
  padding:28px;
  background:var(--white);
  border-left:4px solid var(--orange-500);
  border-radius:4px;
}

/* ============ GALLERY ============ */
.filter-bar{
  display:flex; flex-wrap:wrap; gap:10px;
  margin-bottom:36px;
}
.filter-btn{
  font-family:var(--font-mono);
  font-size:0.78rem;
  letter-spacing:0.06em;
  text-transform:uppercase;
  padding:9px 16px;
  border-radius:20px;
  border:1.5px solid var(--navy-800);
  background:transparent;
  color:var(--navy-800);
  cursor:pointer;
  transition:background .15s, color .15s;
}
.filter-btn.active, .filter-btn:hover{
  background:var(--navy-900); color:var(--white);
}
.gallery-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(260px,1fr));
  gap:20px;
}
.gallery-item{ display:flex; flex-direction:column; gap:10px; }
.gallery-item .arch-frame{ height:230px; }
.gallery-cap{
  font-family:var(--font-mono);
  font-size:0.74rem;
  color:var(--concrete-900);
  letter-spacing:0.03em;
}
.gallery-item[hidden]{ display:none; }

/* ============ ABOUT / STATS ============ */
.stat-row{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(150px,1fr));
  gap:24px;
  margin:40px 0;
}
.stat{
  border-top:3px solid var(--orange-500);
  padding-top:14px;
}
.stat strong{
  display:block;
  font-family:var(--font-display);
  font-size:2.4rem;
  color:var(--navy-900);
}
.stat span{
  font-family:var(--font-mono);
  font-size:0.75rem;
  text-transform:uppercase;
  color:var(--concrete-900);
  letter-spacing:0.05em;
}
.legal-box{
  background:var(--white);
  border:1px solid var(--concrete-300);
  border-radius:6px;
  padding:28px 30px;
  font-size:0.94rem;
}
.legal-box dt{ font-family:var(--font-mono); font-size:0.72rem; text-transform:uppercase; color:var(--orange-600); margin-top:14px; }
.legal-box dt:first-child{ margin-top:0; }
.legal-box dd{ margin:2px 0 0; }

/* ============ DEVIS / FORM ============ */
.devis-layout{
  display:grid;
  grid-template-columns:1.15fr 0.85fr;
  gap:48px;
  align-items:start;
}
.form-card{
  background:var(--white);
  border:1px solid var(--concrete-300);
  border-radius:8px;
  padding:36px;
}
.form-row{ margin-bottom:20px; }
.form-row.two{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
label{
  display:block;
  font-family:var(--font-mono);
  font-size:0.75rem;
  text-transform:uppercase;
  letter-spacing:0.05em;
  margin-bottom:6px;
  color:var(--navy-900);
}
input, select, textarea{
  width:100%;
  font-family:var(--font-body);
  font-size:1rem;
  padding:12px 14px;
  border:1.5px solid var(--concrete-300);
  border-radius:4px;
  background:var(--paper);
  color:var(--ink);
}
input:focus, select:focus, textarea:focus{
  border-color:var(--orange-500);
  outline:none;
}
textarea{ resize:vertical; min-height:120px; }
.form-note{
  font-size:0.82rem;
  color:var(--concrete-900);
  margin-top:16px;
}
.form-status{
  margin-top:18px;
  padding:14px 16px;
  border-radius:4px;
  font-size:0.92rem;
  display:none;
}
.form-status.show{ display:block; }
.form-status.ok{ background:#e5f3ea; color:var(--green-600); border:1px solid var(--green-600); }
.form-status.err{ background:#fbeae3; color:var(--orange-600); border:1px solid var(--orange-500); }

.contact-block{
  background:var(--navy-900);
  color:var(--white);
  border-radius:8px;
  padding:34px;
}
.contact-block h3{ color:var(--white); }
.contact-line{
  display:flex; gap:12px; align-items:flex-start;
  margin-bottom:18px;
  font-size:0.98rem;
}
.contact-line .ic{
  width:22px; flex-shrink:0; color:var(--orange-400);
}
.contact-block hr{
  border:none; border-top:1px solid rgba(255,255,255,0.15);
  margin:22px 0;
}

/* ============ CTA BAND ============ */
.cta-band{
  background:var(--orange-500);
  color:var(--white);
  text-align:center;
}
.cta-band h2{ color:var(--white); }
.cta-band .btn-outline-light{ margin-top:10px; }

/* ============ FOOTER ============ */
.site-footer{
  background:var(--navy-950);
  color:var(--concrete-300);
  padding:64px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:36px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,0.12);
}
.footer-brand img{ height:56px; margin-bottom:14px; }
.footer-brand p{ font-size:0.9rem; color:var(--concrete-500); max-width:32ch; }
.footer-col h4{
  font-family:var(--font-mono);
  color:var(--orange-400);
  font-size:0.78rem;
  text-transform:uppercase;
  letter-spacing:0.08em;
  margin-bottom:16px;
}
.footer-col li{ margin-bottom:10px; font-size:0.92rem; }
.footer-col a:hover{ color:var(--white); }
.footer-social{ display:flex; gap:12px; margin-top:16px; }
.footer-social a{
  width:40px; height:40px;
  border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  transition:transform .15s, filter .15s;
  color:#fff;
}
.footer-social a:hover{ transform:translateY(-2px); filter:brightness(1.1); }
.footer-social a.fb-icon{ background:#1877F2; }
.footer-social a.wa-icon{ background:#25D366; }
.footer-bottom{
  display:flex; justify-content:space-between; align-items:center;
  flex-wrap:wrap; gap:10px;
  padding-top:22px;
  font-size:0.82rem;
  color:var(--concrete-500);
  font-family:var(--font-mono);
}

/* ============ WHATSAPP FLOAT ============ */
.wa-float{
  position:fixed;
  bottom:22px; right:22px;
  width:60px; height:60px;
  background:var(--green-600);
  border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 6px 18px rgba(0,0,0,0.28);
  z-index:200;
  transition:transform .15s;
}
.wa-float:hover{ transform:scale(1.07); }
.wa-float svg{ width:30px; height:30px; fill:var(--white); }

/* ============ PAGE HEADER (sous-pages) ============ */
.page-hero{
  background:var(--navy-900);
  color:var(--white);
  padding:64px 0 54px;
}
.page-hero h1{ color:var(--white); margin-bottom:0.25em; }
.page-hero p{ color:var(--concrete-300); max-width:60ch; font-size:1.05rem; margin:0; }
.breadcrumb{
  font-family:var(--font-mono);
  font-size:0.75rem;
  color:var(--concrete-300);
  text-transform:uppercase;
  letter-spacing:0.05em;
  margin-bottom:18px;
}
.breadcrumb a{ color:var(--orange-400); }

/* ============ RESPONSIVE ============ */
@media (max-width: 900px){
  .hero-grid, .split, .split.reverse, .devis-layout{
    grid-template-columns:1fr;
  }
  .split.reverse .split-visual{ order:0; }
  .hero-visual{ height:260px; }
  .footer-grid{ grid-template-columns:1fr 1fr; }

  .site-header{ position:sticky; }
  .header-inner{ position:relative; flex-wrap:nowrap; }
  .main-nav{
    display:none;
    position:absolute;
    top:100%; left:0; right:0;
    background:var(--white);
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:8px 16px 16px;
    box-shadow:0 12px 20px rgba(0,0,0,0.12);
    border-bottom:3px solid var(--navy-900);
  }
  .main-nav a{ padding:14px 8px; border-bottom:1px solid var(--concrete-100); }
  .site-header.open .main-nav{ display:flex; }

  .header-cta{ flex-shrink:0; gap:8px; }
  .header-cta .btn-outline .txt{ display:none; }
  .header-cta .btn-outline{
    padding:10px; border-radius:50%;
    width:42px; height:42px; justify-content:center;
  }
  .header-cta .btn-outline .ic-phone{ display:inline-flex; }

  .nav-toggle{ display:flex; flex-direction:column; justify-content:center; flex-shrink:0; }

  .form-row.two{ grid-template-columns:1fr; }
}
@media (max-width: 560px){
  .footer-grid{ grid-template-columns:1fr; }
  .header-cta .btn-orange{ display:none; }
}
.ic-phone{ display:none; width:18px; height:18px; flex-shrink:0; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:0.001ms !important; transition-duration:0.001ms !important; }
}