/* ==========================================================
   CARBURAG — styles.css (partagé par toutes les pages)
   ========================================================== */
:root{
  --navy:#16355F;
  --navy-deep:#0E2445;
  --navy-ink:#1B3A6B;
  --gold:#EFA400;
  --gold-dark:#D89400;
  --paper:#F4F6F9;
  --white:#FFFFFF;
  --text:#2A3648;
  --muted:#5A6B84;
  --radius:10px;
  --display:'Barlow Condensed',sans-serif;
  --body:'Barlow',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--body);color:var(--text);background:var(--paper);line-height:1.6}
img{max-width:100%;display:block}

/* ---------- Header ---------- */
header{
  position:sticky;top:0;z-index:100;
  background:var(--navy-deep);
  box-shadow:0 2px 14px rgba(0,0,0,.25);
}
.nav{
  max-width:1160px;margin:0 auto;padding:14px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand svg{flex:none}
.brand span{
  font-family:var(--display);font-weight:800;font-size:1.7rem;
  letter-spacing:.06em;color:var(--white);
}
.nav-links{display:flex;align-items:center;gap:28px;list-style:none}
.nav-links a{
  color:#D8E0EC;text-decoration:none;font-weight:600;font-size:.92rem;
  letter-spacing:.08em;text-transform:uppercase;transition:color .2s;
  padding-bottom:4px;border-bottom:2px solid transparent;
}
.nav-links a:hover,.nav-links a:focus-visible{color:var(--gold)}
.nav-links a[aria-current="page"]{color:var(--gold);border-bottom-color:var(--gold)}
.btn{
  display:inline-block;background:var(--gold);color:var(--navy-deep);
  font-family:var(--body);font-weight:700;font-size:.92rem;letter-spacing:.06em;
  text-transform:uppercase;text-decoration:none;border:none;cursor:pointer;
  padding:12px 24px;border-radius:8px;transition:background .2s,transform .15s;
}
.btn:hover,.btn:focus-visible{background:var(--gold-dark);transform:translateY(-1px)}
.btn-outline{
  background:transparent;color:var(--white);border:2px solid var(--gold);
}
.btn-outline:hover,.btn-outline:focus-visible{background:var(--gold);color:var(--navy-deep)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:3px solid var(--gold);outline-offset:2px;
}
.menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:6px}
.menu-toggle span{display:block;width:26px;height:3px;background:var(--white);margin:5px 0;border-radius:2px}

/* ---------- Hero (accueil) ---------- */
.hero{
  position:relative;overflow:hidden;color:var(--white);
  background:
    linear-gradient(115deg, rgba(11,26,50,.94) 0%, rgba(22,53,95,.85) 45%, rgba(22,53,95,.45) 100%),
    linear-gradient(160deg,#16355F 0%,#0E2445 100%);
  /* Pour utiliser votre photo (camion-citerne / station), placez img/hero.jpg
     et décommentez la ligne ci-dessous : */
  /* background-image:linear-gradient(115deg, rgba(11,26,50,.9), rgba(22,53,95,.35)), url('../img/hero.jpg'); background-size:cover; background-position:center; */
}
.hero::before{
  content:"";position:absolute;top:-60px;right:-140px;width:520px;height:1200px;
  background:linear-gradient(to right, var(--gold) 0 26px, transparent 26px 58px, rgba(255,255,255,.14) 58px 84px, transparent 84px);
  transform:rotate(24deg);pointer-events:none;
}
.hero-inner{
  position:relative;max-width:1160px;margin:0 auto;
  padding:110px 24px 130px;
}
.hero h1{
  font-family:var(--display);font-weight:800;text-transform:uppercase;
  font-size:clamp(2.8rem,7vw,5.2rem);line-height:.95;letter-spacing:.01em;
  max-width:14ch;text-shadow:0 2px 18px rgba(0,0,0,.35);
}
.hero p{
  margin:22px 0 34px;max-width:52ch;font-size:1.08rem;color:#DCE4F0;
}
.hero .btn + .btn{margin-left:12px}
.hero-road{
  position:absolute;left:0;right:0;bottom:0;height:10px;background:var(--navy-deep);
}
.hero-road::after{
  content:"";position:absolute;inset:3px 0;
  background:repeating-linear-gradient(to right, var(--gold) 0 46px, transparent 46px 92px);
  opacity:.85;
}

/* ---------- Bandeau d'entête des pages intérieures ---------- */
.page-hero{
  position:relative;overflow:hidden;color:var(--white);
  background:linear-gradient(120deg,#16355F 0%,#0E2445 70%);
}
.page-hero::before{
  content:"";position:absolute;top:-40px;right:-120px;width:380px;height:700px;
  background:linear-gradient(to right, var(--gold) 0 18px, transparent 18px 42px, rgba(255,255,255,.12) 42px 62px, transparent 62px);
  transform:rotate(24deg);pointer-events:none;
}
.page-hero .wrap{position:relative;padding-top:64px;padding-bottom:64px}
.page-hero h1{
  font-family:var(--display);font-weight:800;text-transform:uppercase;
  font-size:clamp(2.2rem,5vw,3.4rem);letter-spacing:.02em;line-height:1;
}
.page-hero p{margin-top:14px;max-width:60ch;color:#DCE4F0;font-size:1.05rem}
.breadcrumb{font-size:.85rem;color:#9FB0C8;margin-bottom:14px;letter-spacing:.05em;text-transform:uppercase}
.breadcrumb a{color:#D8E0EC;text-decoration:none}
.breadcrumb a:hover{color:var(--gold)}

/* ---------- Sections ---------- */
section{padding:78px 0}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
.section-title{
  font-family:var(--display);font-weight:800;text-transform:uppercase;
  color:var(--navy-ink);font-size:clamp(1.9rem,4vw,2.6rem);letter-spacing:.02em;
  margin-bottom:18px;position:relative;padding-left:18px;
}
.section-title::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:6px;
  background:var(--gold);border-radius:3px;
}
.lead{max-width:70ch;font-size:1.06rem}
.lead + .lead{margin-top:12px}

/* ---------- Cartes ---------- */
.grid{display:grid;gap:22px;margin-top:34px}
.grid.services{grid-template-columns:repeat(4,1fr)}
.grid.engagements{grid-template-columns:repeat(3,1fr)}
.grid.two{grid-template-columns:repeat(2,1fr)}
.card{
  background:var(--white);border-radius:var(--radius);
  padding:34px 22px;text-align:center;
  box-shadow:0 4px 18px rgba(22,53,95,.08);
  border-top:4px solid transparent;
  transition:transform .2s, box-shadow .2s, border-color .2s;
}
.card:hover{transform:translateY(-4px);box-shadow:0 10px 26px rgba(22,53,95,.15);border-top-color:var(--gold)}
.card .icon{width:64px;height:64px;margin:0 auto 18px;color:var(--navy-ink)}
.card .icon svg{width:100%;height:100%}
.card h3{font-weight:700;color:var(--navy-deep);font-size:1.12rem;line-height:1.3;margin-bottom:8px}
.card p{font-size:.94rem;color:var(--muted)}
.card a.card-link{
  display:inline-block;margin-top:14px;color:var(--navy-ink);font-weight:700;
  font-size:.88rem;letter-spacing:.05em;text-transform:uppercase;text-decoration:none;
}
.card a.card-link:hover{color:var(--gold-dark)}

/* ---------- Blocs détaillés (pages services / engagements) ---------- */
.detail{
  display:grid;grid-template-columns:88px 1fr;gap:26px;align-items:start;
  background:var(--white);border-radius:var(--radius);padding:34px;
  box-shadow:0 4px 18px rgba(22,53,95,.08);margin-top:26px;
  border-left:5px solid var(--gold);
}
.detail .icon{width:64px;height:64px;color:var(--navy-ink)}
.detail .icon svg{width:100%;height:100%}
.detail h2{
  font-family:var(--display);font-weight:700;text-transform:uppercase;
  color:var(--navy-deep);font-size:1.5rem;letter-spacing:.02em;margin-bottom:8px;
}
.detail p{color:var(--text)}
.detail ul{margin:12px 0 0 18px;color:var(--muted)}
.detail ul li{margin-bottom:6px}

/* ---------- Bandeau d'appel à l'action ---------- */
.cta-band{
  background:linear-gradient(120deg,var(--navy) 0%,var(--navy-deep) 100%);
  color:var(--white);text-align:center;
}
.cta-band h2{
  font-family:var(--display);font-weight:800;text-transform:uppercase;
  font-size:clamp(1.8rem,4vw,2.5rem);margin-bottom:12px;
}
.cta-band p{max-width:60ch;margin:0 auto 26px;color:#DCE4F0}

/* Sections à fond alterné */
.section-alt{background:#EAEEF4}

/* ---------- Page contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.3fr;gap:44px;margin-top:34px}
.contact-card{
  background:var(--white);border-radius:var(--radius);padding:34px;
  box-shadow:0 4px 18px rgba(22,53,95,.08);
}
.contact-card h2{
  font-family:var(--display);font-weight:700;text-transform:uppercase;
  color:var(--navy-deep);font-size:1.4rem;margin-bottom:18px;
}
.contact-list{list-style:none}
.contact-list li{display:flex;align-items:flex-start;gap:12px;margin-bottom:16px;font-size:1rem}
.contact-list svg.mini{width:20px;height:20px;flex:none;color:var(--gold);margin-top:3px}
.contact-list a{color:var(--navy-ink);text-decoration:none;font-weight:600}
.contact-list a:hover{color:var(--gold-dark)}
.contact-form input,.contact-form textarea{
  width:100%;padding:13px 14px;margin-bottom:14px;
  border:1.5px solid #D5DCE7;border-radius:8px;font-family:var(--body);font-size:.98rem;
  background:var(--white);color:var(--text);
}
.contact-form input:focus,.contact-form textarea:focus{border-color:var(--navy-ink)}
.contact-form textarea{min-height:140px;resize:vertical}
.form-note{font-size:.85rem;color:var(--muted);margin-top:10px}
.sr-label{position:absolute;left:-9999px}

/* ---------- Footer ---------- */
footer{background:var(--navy-deep);color:#D8E0EC;padding:60px 0 30px;margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:44px;
  max-width:1160px;margin:0 auto;padding:0 24px;
}
.footer-brand p{margin-top:16px;font-size:.95rem;color:#B9C6D8;max-width:34ch}
footer h2{
  font-family:var(--display);font-weight:800;text-transform:uppercase;
  color:var(--white);font-size:1.4rem;letter-spacing:.04em;margin-bottom:16px;
}
.footer-links{list-style:none}
.footer-links li{margin-bottom:10px}
.footer-links a{color:#D8E0EC;text-decoration:none;font-size:.98rem}
.footer-links a:hover{color:var(--gold)}
.footer-contact{list-style:none}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;margin-bottom:12px;font-size:.95rem}
.footer-contact svg.mini{width:18px;height:18px;flex:none;color:var(--gold);margin-top:3px}
.footer-contact a{color:#D8E0EC;text-decoration:none}
.footer-contact a:hover{color:var(--gold)}
.footer-bottom{
  max-width:1160px;margin:48px auto 0;padding:20px 24px 0;
  border-top:1px solid rgba(255,255,255,.15);
  font-size:.85rem;color:#9FB0C8;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;
}

/* ---------- Apparition au défilement ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:none}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .card,.btn{transition:none}
}

/* ---------- Responsive ---------- */
@media (max-width:960px){
  .grid.services{grid-template-columns:repeat(2,1fr)}
  .grid.two{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
}
@media (max-width:640px){
  .menu-toggle{display:block}
  .nav-links{
    position:absolute;top:100%;left:0;right:0;
    background:var(--navy-deep);flex-direction:column;gap:0;
    max-height:0;overflow:hidden;transition:max-height .3s ease;
  }
  .nav-links.open{max-height:360px;box-shadow:0 10px 20px rgba(0,0,0,.3)}
  .nav-links li{width:100%;text-align:center}
  .nav-links a{display:block;padding:14px 0;border-bottom:none}
  .nav .btn{display:none}
  .hero-inner{padding:80px 24px 100px}
  .hero .btn + .btn{margin-left:0;margin-top:12px}
  .grid.services,.grid.engagements{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .detail{grid-template-columns:1fr;gap:14px}
  .detail .icon{margin:0 auto}
  .detail{text-align:center}
  .detail ul{text-align:left}
}