/* ===================================================================
   BâtiWal Construction — Feuille de style
   =================================================================== */

:root{
  --orange:#e8621d;
  --orange-dark:#c94f14;
  --ink:#16202b;
  --ink-2:#243444;
  --slate:#5a6b7b;
  --line:#e6e9ee;
  --bg:#ffffff;
  --bg-muted:#f5f7fa;
  --bg-dark:#16202b;
  --white:#ffffff;
  --shadow:0 18px 40px -18px rgba(22,32,43,.28);
  --shadow-sm:0 8px 22px -12px rgba(22,32,43,.30);
  --radius:16px;
  --radius-sm:10px;
  --maxw:1200px;
  --f-head:'Barlow Condensed', system-ui, sans-serif;
  --f-body:'Inter', system-ui, sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:96px}
body{
  font-family:var(--f-body);
  color:var(--ink);
  background:var(--bg);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}

.container{width:min(var(--maxw),92%);margin-inline:auto}

/* ---------- Typo utilitaires ---------- */
h1,h2,h3,h4{font-family:var(--f-head);font-weight:700;line-height:1.05;letter-spacing:.5px}
.eyebrow{
  display:inline-block;font-family:var(--f-head);font-weight:600;
  text-transform:uppercase;letter-spacing:2px;font-size:.85rem;
  color:var(--orange);margin-bottom:.6rem;
}

/* ---------- Boutons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  font-family:var(--f-head);font-weight:600;letter-spacing:.5px;
  font-size:1.05rem;padding:.85rem 1.6rem;border-radius:var(--radius-sm);
  border:2px solid transparent;cursor:pointer;transition:.25s ease;
  text-transform:uppercase;
}
.btn--primary{background:var(--orange);color:#fff}
.btn--primary:hover{background:var(--orange-dark);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.btn--ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.55)}
.btn--ghost:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn--lg{font-size:1.1rem;padding:1rem 2rem}
.btn--sm{font-size:.9rem;padding:.55rem 1.1rem}
.btn--block{width:100%}

/* ---------- Bandeau démonstration ---------- */
.demo-banner{
  background:repeating-linear-gradient(45deg,#ffb300,#ffb300 14px,#1a1a1a 14px,#1a1a1a 28px);
  padding:3px;
}
.demo-banner__inner{
  background:#111820;color:#ffd77a;text-align:center;
  padding:.5rem 1rem;border-radius:6px;font-size:.9rem;letter-spacing:.3px;
}
.demo-banner strong{color:#ffb300}

/* ---------- Topbar ---------- */
.topbar{background:var(--ink);color:#c7d2dd;font-size:.85rem}
.topbar__inner{display:flex;justify-content:space-between;align-items:center;padding:.5rem 0;flex-wrap:wrap;gap:.4rem}
.topbar__sep{opacity:.4;margin:0 .5rem}
.topbar__right a{margin-left:1.2rem;transition:.2s}
.topbar__right a:hover{color:var(--orange)}

/* ---------- Navigation ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);transition:.3s}
.nav.scrolled{box-shadow:var(--shadow-sm)}
.nav__inner{display:flex;align-items:center;justify-content:space-between;padding:.85rem 0}

.brand{display:flex;align-items:center;gap:.7rem}
.brand__mark{
  display:grid;place-items:center;width:44px;height:44px;border-radius:10px;
  background:var(--orange);color:#fff;font-family:var(--f-head);font-weight:700;
  font-size:1.35rem;letter-spacing:.5px;box-shadow:var(--shadow-sm);
}
.brand__text{font-family:var(--f-head);font-weight:700;font-size:1.5rem;line-height:1;color:var(--ink);display:flex;flex-direction:column}
.brand__text small{font-family:var(--f-body);font-weight:500;font-size:.62rem;letter-spacing:1.5px;text-transform:uppercase;color:var(--slate);margin-top:3px}

.nav__links{display:flex;align-items:center;gap:1.6rem}
.nav__links a{font-family:var(--f-head);font-weight:600;font-size:1.05rem;letter-spacing:.4px;color:var(--ink-2);transition:.2s;position:relative}
.nav__links a:not(.btn):hover{color:var(--orange)}
.nav__links a:not(.btn)::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--orange);transition:.25s}
.nav__links a:not(.btn):hover::after{width:100%}

.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.nav__toggle span{width:26px;height:3px;background:var(--ink);border-radius:2px;transition:.3s}
.nav__toggle.open span:nth-child(1){transform:translateY(8px) rotate(45deg)}
.nav__toggle.open span:nth-child(2){opacity:0}
.nav__toggle.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;color:#fff;overflow:hidden}
.hero__slides{position:absolute;inset:0}
.hero__slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity 1.4s ease;transform:scale(1.05)}
.hero__slide.is-active{opacity:1;animation:kenburns 8s ease forwards}
@keyframes kenburns{from{transform:scale(1.05)}to{transform:scale(1.14)}}
.hero__overlay{position:absolute;inset:0;background:linear-gradient(105deg,rgba(15,23,32,.92) 0%,rgba(15,23,32,.6) 45%,rgba(15,23,32,.25) 100%)}
.hero__content{position:relative;z-index:2;padding:6rem 0}
.hero__eyebrow{display:inline-block;font-family:var(--f-head);font-weight:600;letter-spacing:2px;text-transform:uppercase;font-size:.9rem;background:var(--orange);padding:.4rem 1rem;border-radius:6px;margin-bottom:1.4rem}
.hero__title{font-size:clamp(2.6rem,6vw,4.8rem);margin-bottom:1.3rem;text-shadow:0 2px 20px rgba(0,0,0,.3)}
.hero__title span{color:var(--orange)}
.hero__lead{max-width:620px;font-size:1.15rem;color:#dbe3ec;margin-bottom:2rem}
.hero__actions{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:2.2rem}
.hero__badges{display:flex;gap:1.6rem;flex-wrap:wrap;font-family:var(--f-head);font-weight:600;letter-spacing:.5px;color:#e8eef4}
.hero__dots{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);display:flex;gap:.6rem;z-index:3}
.hero__dots button{width:12px;height:12px;border-radius:50%;border:2px solid #fff;background:transparent;cursor:pointer;transition:.25s;padding:0}
.hero__dots button.active{background:var(--orange);border-color:var(--orange);transform:scale(1.15)}

/* ---------- Stats ---------- */
.stats{background:var(--orange);color:#fff}
.stats__grid{display:grid;grid-template-columns:repeat(4,1fr);text-align:center;padding:2.6rem 0}
.stat{position:relative;padding:.5rem 1rem}
.stat:not(:last-child)::after{content:"";position:absolute;right:0;top:15%;height:70%;width:1px;background:rgba(255,255,255,.3)}
.stat__num,.stat__plus{font-family:var(--f-head);font-weight:700;font-size:3rem;line-height:1}
.stat p{font-size:.95rem;letter-spacing:.5px;margin-top:.3rem;color:#ffe6d6}

/* ---------- Sections ---------- */
.section{padding:6rem 0}
.section--muted{background:var(--bg-muted)}
.section--dark{background:var(--bg-dark);color:#fff}
.section__head{max-width:720px;margin:0 auto 3rem;text-align:center}
.section__head h2{font-size:clamp(2rem,4vw,3rem);margin-bottom:1rem}
.section__head p{color:var(--slate);font-size:1.08rem}
.section__head--light h2{color:#fff}
.section__head--light p{color:#aebccb}

/* ---------- Services ---------- */
.services{display:grid;grid-template-columns:repeat(3,1fr);gap:1.8rem}
.service{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:.3s}
.service:hover{transform:translateY(-8px);box-shadow:var(--shadow)}
.service__img{height:200px;background-size:cover;background-position:center;position:relative}
.service__img::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(0,0,0,.15))}
.service__body{padding:1.6rem}
.service__body h3{font-size:1.5rem;margin-bottom:.6rem;color:var(--ink)}
.service__body p{color:var(--slate);font-size:.98rem}

/* ---------- Bandeau CTA ---------- */
.cta-band{position:relative;background-size:cover;background-position:center;background-attachment:fixed;color:#fff}
.cta-band__overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(22,32,43,.92),rgba(232,98,29,.75))}
.cta-band__inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:2rem;padding:4rem 0;flex-wrap:wrap}
.cta-band h2{font-size:clamp(1.8rem,3.5vw,2.6rem)}
.cta-band p{color:#f0e6df;font-size:1.1rem;margin-top:.4rem}

/* ---------- Filtres + galerie ---------- */
.filters{display:flex;justify-content:center;gap:.7rem;flex-wrap:wrap;margin-bottom:2.4rem}
.filter{font-family:var(--f-head);font-weight:600;letter-spacing:.5px;font-size:1rem;text-transform:uppercase;padding:.5rem 1.3rem;border-radius:50px;border:2px solid var(--line);background:#fff;color:var(--ink-2);cursor:pointer;transition:.25s}
.filter:hover{border-color:var(--orange);color:var(--orange)}
.filter.is-active{background:var(--orange);border-color:var(--orange);color:#fff}

.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:1.2rem}
.gallery__item{position:relative;height:260px;border-radius:var(--radius);background-size:cover;background-position:center;overflow:hidden;box-shadow:var(--shadow-sm);transition:.35s;cursor:pointer}
.gallery__item::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(15,23,32,.88));transition:.35s}
.gallery__item:hover{transform:translateY(-6px)}
.gallery__item:hover::after{background:linear-gradient(180deg,rgba(232,98,29,.15),rgba(15,23,32,.9))}
.gallery__item figcaption{position:absolute;left:0;bottom:0;z-index:2;padding:1.2rem;color:#fff;transform:translateY(6px);transition:.35s}
.gallery__item:hover figcaption{transform:translateY(0)}
.gallery__item figcaption span{display:inline-block;font-family:var(--f-head);font-size:.75rem;letter-spacing:1.5px;text-transform:uppercase;background:var(--orange);padding:.2rem .6rem;border-radius:4px;margin-bottom:.5rem}
.gallery__item figcaption strong{display:block;font-family:var(--f-head);font-size:1.25rem;font-weight:600}
.gallery__item.hide{display:none}
.gallery__item.reveal{animation:pop .4s ease}
@keyframes pop{from{opacity:0;transform:scale(.92)}to{opacity:1;transform:scale(1)}}

/* ---------- À propos ---------- */
.about{display:grid;grid-template-columns:1fr 1fr;gap:3.5rem;align-items:center}
.about__media{position:relative}
.about__media img{border-radius:var(--radius);box-shadow:var(--shadow);width:100%;height:100%;object-fit:cover}
.about__badge{position:absolute;bottom:-24px;right:-14px;background:var(--orange);color:#fff;border-radius:var(--radius-sm);padding:1.1rem 1.5rem;text-align:center;box-shadow:var(--shadow);line-height:1.1}
.about__badge strong{font-family:var(--f-head);font-size:2.2rem;display:block}
.about__badge span{font-size:.8rem;letter-spacing:.5px}
.about__content h2{font-size:clamp(1.9rem,3.5vw,2.7rem);margin-bottom:1rem}
.about__content p{color:var(--slate);margin-bottom:1.4rem}
.checklist{display:grid;gap:.8rem;margin-bottom:2rem}
.checklist li{position:relative;padding-left:2rem;color:var(--ink-2);font-weight:500}
.checklist li::before{content:"✔";position:absolute;left:0;top:0;width:1.4rem;height:1.4rem;background:var(--orange);color:#fff;border-radius:50%;display:grid;place-items:center;font-size:.75rem}
.about__signature{display:flex;align-items:center;gap:1rem;border-top:1px solid var(--line);padding-top:1.4rem}
.about__signature img{width:56px;height:56px;border-radius:50%;object-fit:cover}
.about__signature strong{display:block;font-family:var(--f-head);font-size:1.2rem}
.about__signature span{color:var(--slate);font-size:.9rem}

/* ---------- Processus ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem}
.step{background:var(--ink-2);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);padding:2rem 1.6rem;position:relative;transition:.3s}
.step:hover{transform:translateY(-6px);border-color:var(--orange)}
.step__num{font-family:var(--f-head);font-weight:700;font-size:3.2rem;color:var(--orange);opacity:.85;line-height:1}
.step h3{font-size:1.4rem;margin:.6rem 0 .5rem}
.step p{color:#aebccb;font-size:.95rem}

/* ---------- Témoignages ---------- */
.testimonials{display:grid;grid-template-columns:repeat(3,1fr);gap:1.8rem}
.testimonial{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:2rem;box-shadow:var(--shadow-sm)}
.stars{color:var(--orange);letter-spacing:2px;margin-bottom:.8rem;font-size:1.1rem}
.testimonial p{color:var(--ink-2);font-style:italic;margin-bottom:1.2rem}
.testimonial footer strong{display:block;font-family:var(--f-head);font-size:1.15rem}
.testimonial footer span{color:var(--slate);font-size:.9rem}

/* ---------- Contact ---------- */
.contact{display:grid;grid-template-columns:1fr 1.1fr;gap:3.5rem;align-items:start}
.contact__info h2{font-size:clamp(1.9rem,3.5vw,2.7rem);margin-bottom:1rem}
.contact__info>p{color:var(--slate);margin-bottom:1.6rem}
.contact__list{display:grid;gap:.9rem;margin-bottom:1.8rem}
.contact__list li{display:flex;align-items:center;gap:.8rem;font-weight:500}
.contact__list li span{font-size:1.2rem}
.contact__list a:hover{color:var(--orange)}
.contact__zones strong{font-family:var(--f-head);font-size:1.1rem}
.tags{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.7rem}
.tags span{background:var(--bg-muted);border:1px solid var(--line);padding:.35rem .9rem;border-radius:50px;font-size:.85rem;color:var(--ink-2)}

.contact__form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:2rem;box-shadow:var(--shadow)}
.field{margin-bottom:1.1rem}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.field label{display:block;font-family:var(--f-head);font-weight:600;letter-spacing:.5px;margin-bottom:.4rem;color:var(--ink-2)}
.field input,.field select,.field textarea{
  width:100%;padding:.8rem 1rem;border:1.5px solid var(--line);border-radius:var(--radius-sm);
  font-family:var(--f-body);font-size:1rem;color:var(--ink);background:#fdfefe;transition:.2s;resize:vertical;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--orange);box-shadow:0 0 0 3px rgba(232,98,29,.15)}
.field input.invalid,.field textarea.invalid{border-color:#e0342f;box-shadow:0 0 0 3px rgba(224,52,47,.12)}
.form__note{margin-top:1rem;background:#e9f8ee;border:1px solid #b6e4c6;color:#1c7a3f;padding:.8rem 1rem;border-radius:var(--radius-sm);font-weight:500}

/* ---------- Footer ---------- */
.footer{background:var(--ink);color:#aebccb;padding-top:4rem}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:2.5rem;padding-bottom:3rem}
.brand--footer .brand__text{color:#fff}
.footer__about{margin-top:1rem;font-size:.95rem;max-width:320px}
.footer h4{font-family:var(--f-head);color:#fff;font-size:1.25rem;margin-bottom:1rem;letter-spacing:.5px}
.footer ul li{margin-bottom:.6rem;font-size:.95rem}
.footer ul a:hover{color:var(--orange)}
.footer__bottom{border-top:1px solid rgba(255,255,255,.1);padding:1.4rem 0}
.footer__bottom-inner{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;font-size:.85rem;color:#7d8d9c}

/* ---------- Bouton flottant ---------- */
.fab{
  position:fixed;right:22px;bottom:22px;z-index:40;
  background:var(--orange);color:#fff;font-family:var(--f-head);font-weight:600;
  letter-spacing:.5px;text-transform:uppercase;padding:.9rem 1.4rem;border-radius:50px;
  box-shadow:var(--shadow);transform:translateY(120px);transition:.4s;
}
.fab.show{transform:translateY(0)}
.fab:hover{background:var(--orange-dark)}

/* ---------- Animations au scroll ---------- */
[data-animate]{opacity:0;transform:translateY(30px);transition:opacity .7s ease,transform .7s ease}
[data-animate].in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media(max-width:1024px){
  .services,.testimonials{grid-template-columns:repeat(2,1fr)}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .footer__grid{grid-template-columns:1fr 1fr}
}
@media(max-width:820px){
  .nav__toggle{display:flex}
  .nav__links{
    position:fixed;inset:0 0 0 auto;width:min(320px,82%);flex-direction:column;
    align-items:flex-start;gap:1.4rem;background:#fff;padding:6rem 2rem 2rem;
    box-shadow:-10px 0 40px rgba(0,0,0,.15);transform:translateX(100%);transition:.35s;
  }
  .nav__links.open{transform:translateX(0)}
  .nav__links a{font-size:1.3rem}
  .stats__grid{grid-template-columns:repeat(2,1fr);gap:1.5rem}
  .stat:nth-child(2)::after{display:none}
  .about,.contact{grid-template-columns:1fr}
  .about__media{max-width:520px}
  .cta-band{background-attachment:scroll}
  .cta-band__inner{text-align:center;justify-content:center}
}
@media(max-width:560px){
  .section{padding:4rem 0}
  .services,.testimonials,.gallery,.steps{grid-template-columns:1fr}
  .field-row{grid-template-columns:1fr}
  .topbar__left{display:none}
  .topbar__inner{justify-content:center}
  .footer__grid{grid-template-columns:1fr}
  .hero__badges{gap:.8rem;font-size:.9rem}
  .fab{display:none}
}

@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto}
  [data-animate]{opacity:1;transform:none}
}