/* ============================================================
   LAUT Conseil — layout.css
   Header · Hero · Sections · Waves · Footer · Responsive
   ============================================================ */

/* ------------------------------------------------------------
   Page
   ------------------------------------------------------------ */
.page{position:relative;z-index:2}
.section{padding-block:var(--sec-y)}
.section__inner{display:flex;flex-direction:column;gap:clamp(2rem,4vw,3rem)}

/* ------------------------------------------------------------
   Header (glassmorphism, sticky)
   ------------------------------------------------------------ */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(247,249,252,.82);
  backdrop-filter:saturate(180%) blur(18px);
  -webkit-backdrop-filter:saturate(180%) blur(18px);
  transition:background var(--t) var(--e),box-shadow var(--t) var(--e);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,var(--hair-soft),var(--hair-2) 20%,var(--hair-2) 80%,var(--hair-soft));
}
.site-header.is-stuck{
  background:#fff;
  box-shadow:0 6px 24px -12px rgba(16,32,64,.18);
}

.site-header__inner{display:flex;align-items:center;gap:1rem;padding-block:1.05rem}

/* --- logo --- */
.brand{text-decoration:none;color:var(--ink);margin-right:auto;display:block;line-height:1}
.brand__word{
  font-family:var(--f-display);
  font-weight:800;
  font-size:1.42rem;
  letter-spacing:.06em;
  display:block;
}
.brand__word i{font-style:normal;color:var(--blue)}
.brand__sub{
  display:block;
  font-size:.5rem;
  font-weight:600;
  letter-spacing:.56em;
  color:var(--ink-4);
  margin-top:.35rem;
  padding-left:.15rem;
}

/* --- navigation --- */
.nav{display:none;align-items:center;gap:1.9rem;margin-right:1.9rem}
.nav__link{
  position:relative;
  color:var(--ink-2);
  text-decoration:none;
  font-size:.88rem;
  font-weight:500;
  padding-block:.35rem;
  transition:color var(--t) var(--e);
}
.nav__link::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;
  background:var(--blue);border-radius:2px;
  transition:right var(--t) var(--e);
}
.nav__link:hover{color:var(--ink)}
.nav__link:hover::after,.nav__link[aria-current="page"]::after{right:0}
.nav__link[aria-current="page"]{color:var(--blue-lt)}

/* --- burger --- */
.burger{
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:44px;height:44px;
  padding:0 11px;
  border:0;
  border-radius:var(--r-sm);
  background:var(--surface);
  box-shadow:0 0 0 1px var(--hair-2) inset;
  cursor:pointer;
}
.burger span{
  display:block;height:2px;width:100%;border-radius:2px;
  background:var(--ink);
  transition:transform var(--t) var(--e),opacity var(--t) var(--e);
}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.burger:focus-visible{outline:2px solid var(--blue-lt);outline-offset:3px}

.header-cta{display:none}

/* --- panneau mobile --- */
.mobile-nav{
  display:none;
  flex-direction:column;
  gap:.2rem;
  padding:.5rem var(--pad-x) 1.4rem;
  border-top:1px solid var(--hair);
}
.mobile-nav.is-open{display:flex}
.mobile-nav__link{
  color:var(--ink-2);
  text-decoration:none;
  font-size:1rem;
  font-weight:500;
  padding:.85rem .2rem;
  border-bottom:1px solid var(--hair);
  transition:color var(--t) var(--e);
}
.mobile-nav__link:hover{color:var(--ink)}
.mobile-nav .btn{margin-top:1rem}

@media (min-width:64rem){
  .nav{display:flex}
  .burger{display:none}
  .header-cta{display:inline-flex}
  .mobile-nav,.mobile-nav.is-open{display:none}
}

/* ------------------------------------------------------------
   Hero
   ------------------------------------------------------------ */
.hero{padding-block:clamp(2.6rem,7vw,5.2rem) clamp(2rem,4vw,3rem)}
.hero__grid{
  display:grid;
  gap:2.6rem;
  grid-template-columns:1fr;
  align-items:center;
}
.hero__label{
  display:block;
  font-size:.72rem;
  font-weight:700;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--blue-lt);
  margin-bottom:1.35rem;
}
.hero__title{max-width:12ch}
.hero__text{margin-top:1.5rem;max-width:44ch;color:var(--ink-2);font-size:1.03rem}
.hero__actions{display:flex;flex-wrap:wrap;gap:.8rem;margin-top:2.1rem}

.hero__visual{position:relative;order:2}
.hero__visual svg{width:100%;height:auto;display:block;filter:drop-shadow(0 30px 52px rgba(16,32,64,.20))}
.hero__visual::before{
  content:"";position:absolute;inset:-14% 0 -8%;z-index:-1;border-radius:50%;
  background:radial-gradient(closest-side,rgba(47,111,237,.17),transparent 72%);
}

.metrics{display:grid;gap:1.1rem;grid-template-columns:1fr;margin-top:clamp(2.4rem,5vw,3.6rem)}

@media (min-width:46rem){
  .metrics{grid-template-columns:1fr 1fr}
}
@media (min-width:70rem){
  .hero__grid{grid-template-columns:1.02fr .98fr;gap:3.6rem}
  .hero__visual{order:0}
}

/* ------------------------------------------------------------
   Services
   ------------------------------------------------------------ */
.services__grid{display:grid;gap:1.1rem;grid-template-columns:1fr}
@media (min-width:40rem){.services__grid{grid-template-columns:1fr 1fr}}
@media (min-width:70rem){.services__grid{grid-template-columns:repeat(4,1fr)}}

/* ------------------------------------------------------------
   Crédibilité
   ------------------------------------------------------------ */
@media (min-width:46rem){
  .cred{grid-template-columns:1fr 1px 1fr;gap:2.4rem}
  .cred__sep{display:block}
}

/* ------------------------------------------------------------
   Approche (timeline)
   ------------------------------------------------------------ */
.approach__head{display:grid;gap:1.6rem;grid-template-columns:1fr;align-items:start}
@media (min-width:64rem){.approach__head{grid-template-columns:1fr 1fr;gap:3rem}}
.approach__intro{color:var(--ink-2);max-width:46ch}

/* La grille des étapes vit dans pages.css (.steps-track),
   partagée par l'accueil, la page Services et la page À propos. */

/* ------------------------------------------------------------
   Réalisations
   ------------------------------------------------------------ */
.work__head{
  display:flex;flex-wrap:wrap;gap:1.2rem;
  align-items:flex-end;justify-content:space-between;
}
.work__grid{display:grid;gap:1.1rem;grid-template-columns:1fr}
@media (min-width:34rem){.work__grid{grid-template-columns:1fr 1fr}}
@media (min-width:70rem){.work__grid{grid-template-columns:repeat(4,1fr)}}

/* ------------------------------------------------------------
   Contact
   ------------------------------------------------------------ */
.contact__grid{
  display:grid;gap:2.2rem;grid-template-columns:1fr;
  padding:clamp(1.6rem,4vw,2.8rem);
  border-radius:var(--r-lg);
  background:var(--surface);
  box-shadow:var(--sh-1);
}
@media (min-width:64rem){.contact__grid{grid-template-columns:.85fr 1.15fr;gap:3.4rem}}
.contact__intro{margin-top:1.2rem;color:var(--ink-2);max-width:36ch}
.contact__coords{display:flex;flex-direction:column;margin-top:1.8rem}
.contact__coord{
  display:flex;align-items:center;gap:.9rem;
  text-decoration:none;color:var(--ink);font-size:.93rem;
  padding-block:.95rem;position:relative;
}
.contact__coord::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--hair)}
.contact__coord:last-child::after{content:"";position:absolute;bottom:0;left:0;right:0;height:1px;background:var(--hair)}
.contact__coord svg{width:17px;height:17px;flex:none;color:var(--blue-lt)}
.contact__coord span{overflow-wrap:anywhere;transition:color var(--t) var(--e)}
.contact__coord:hover span{color:var(--blue-lt)}

.form{display:flex;flex-direction:column;gap:1.2rem}
.form__row{display:grid;gap:1.2rem;grid-template-columns:1fr}
@media (min-width:36rem){.form__row{grid-template-columns:1fr 1fr}}

/* ------------------------------------------------------------
   CTA final
   ------------------------------------------------------------ */
@media (min-width:56rem){
  .cta{grid-template-columns:1.2fr .9fr auto;gap:2.6rem}
}

/* ------------------------------------------------------------
   Vagues
   ------------------------------------------------------------ */
.waves{display:block;width:100%;height:auto;margin-block:clamp(2.5rem,6vw,4rem) -1px}

/* ------------------------------------------------------------
   Footer
   ------------------------------------------------------------ */
.site-footer{background:var(--blue);position:relative;padding-block:2.6rem 1.8rem}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,var(--hair-soft),var(--hair-2) 22%,var(--hair-2) 78%,var(--hair-soft));
}
.site-footer__top{
  display:grid;gap:2rem;grid-template-columns:1fr;
  padding-bottom:1.9rem;
}
@media (min-width:44rem){.site-footer__top{grid-template-columns:1fr 1fr}}
@media (min-width:70rem){.site-footer__top{grid-template-columns:1.2fr 1fr 1fr auto;gap:2.6rem}}

.footer-col{display:flex;flex-direction:column;gap:.7rem}
.footer-col__title{
  font-size:.66rem;font-weight:700;letter-spacing:.2em;
  text-transform:uppercase;color:var(--ink-4);margin-bottom:.2rem;
}
.footer-col a{
  color:var(--ink-3);text-decoration:none;font-size:.88rem;
  display:inline-flex;align-items:center;gap:.6rem;
  transition:color var(--t) var(--e);
}
.footer-col a:hover{color:var(--ink)}
.footer-col svg{width:16px;height:16px;flex:none;color:var(--blue-lt)}

.socials{display:flex;gap:.6rem}
.socials a{
  width:40px;height:40px;border-radius:11px;
  display:grid;place-items:center;
  background:rgba(255,255,255,.14);
  box-shadow:0 0 0 1px var(--hair) inset;
  color:#fff;
  transition:color var(--t) var(--e),background var(--t) var(--e),transform var(--t) var(--e);
}
.socials a:hover{color:#fff;background:rgba(255,255,255,.26);transform:translateY(-2px)}
.socials svg{width:18px;height:18px}

.site-footer__base{
  display:flex;flex-wrap:wrap;gap:.6rem 1.6rem;
  align-items:center;justify-content:space-between;
  padding-top:1.5rem;position:relative;
  font-size:.8rem;color:var(--ink-4);
}
.site-footer__base::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--hair)}
.site-footer__legal{display:flex;flex-wrap:wrap;gap:.5rem 1.2rem}
.site-footer__legal a{color:var(--ink-4);text-decoration:none;transition:color var(--t) var(--e)}
.site-footer__legal a:hover{color:var(--ink-2)}

/* ------------------------------------------------------------
   Mobile : CTA pleine largeur
   ------------------------------------------------------------ */
@media (max-width:34rem){
  .hero__actions .btn{width:100%}
  .cta .btn{width:100%}
  .qr-slot{width:100%;max-width:220px;height:150px}
}