/* Walterre — feuille de style commune à toutes les pages du site.
   Conforme à la charte graphique officielle (Charte_Graphique_Walterre_2023) : voir /CLAUDE.md. */

*{box-sizing:border-box;margin:0;padding:0}

:root{
  --orange:#F3953F;
  --blue:#136DBD;
  --navy:#003C70;
  --black:#1C1B18;
  --muted:#5C6880;
  --bg:#F5F6F8;
  --surface:#fff;
  --border:#DDE2EC;
  --lb:#E8F2FB;
  --lo:#FDF2E8;
  --lg:#E8F8F0;
  --green:#1D7A48;
  --purple:#5B3FA0;
  --lp:#EEE8FB;
  --radius:14px;
}

html{scroll-behavior:smooth}
body{
  font-family:'Montserrat',Arial,sans-serif;font-weight:300; /* Montserrat Light = texte courant, cf. charte */
  background:var(--bg);color:var(--black);line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
/* Titres en Montserrat (Prelia réservé au logotype "walterre" lui-même, cf. charte) */
h1,h2,h3,h4{font-family:'Montserrat',Arial,sans-serif;color:var(--navy);line-height:1.2}
h1{font-weight:700} /* Montserrat Bold = h1 */
h2{font-weight:600} /* Montserrat Medium = h2 */
h3,h4{font-weight:400;line-height:1.35} /* Montserrat Regular = h3 */
.logo-img{height:34px;width:auto;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section-alt{background:var(--surface)}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.08em;
  text-transform:uppercase;color:var(--green);background:var(--lg);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.section-title{font-size:clamp(26px,3.2vw,38px);margin-bottom:16px}
.section-text{color:var(--muted);font-size:16px;max-width:720px;margin-bottom:32px}
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:14px 30px;border-radius:999px;
  font-weight:700;font-size:15px;cursor:pointer;border:2px solid transparent;
  transition:background .2s ease,box-shadow .2s ease,transform .2s ease;
}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 4px 15px rgba(0,60,112,.3)}
.btn-primary:hover{background:#dd8232;transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,60,112,.4)}
.btn-outline{background:transparent;border-color:rgba(255,255,255,.5);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
.btn-outline-navy{color:var(--navy);border-color:var(--navy)}
.btn-navy{background:var(--navy);color:#fff;box-shadow:0 4px 15px rgba(0,60,112,.3)}
.btn-navy:hover{background:#00294f;transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,60,112,.4)}
.btn-white-green{background:#fff;color:var(--green)}
.btn-inline-sm{margin-left:10px;padding:8px 18px;font-size:13px}
.btn-row{display:flex;gap:14px;flex-wrap:wrap}
.btn-row-spaced{margin-top:28px}

/* HEADER / NAV */
.site-header{
  background:var(--navy);position:sticky;top:0;z-index:500;
  box-shadow:0 2px 10px rgba(0,0,0,.15);
}
.nav-wrap{
  display:flex;align-items:center;gap:28px;height:72px;
  max-width:1200px;margin:0 auto;padding:0 24px;
}
.logo-block{display:flex;align-items:center;margin-right:auto}

.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  font-size:14px;font-weight:600;color:rgba(255,255,255,.78);
  padding:10px 14px;border-radius:8px;transition:all .15s;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.08)}
.nav-cta{margin-left:8px}
.nav-cta a{background:var(--orange);color:#fff !important;padding:10px 20px !important;border-radius:999px}
.nav-cta a:hover{background:#dd8232 !important}

.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:8px}
.nav-toggle span{display:block;width:24px;height:2px;background:#fff;margin:5px 0;border-radius:2px}

@media (max-width:900px){
  .nav-toggle{display:block;margin-left:auto}
  .nav-links{
    position:absolute;top:72px;left:0;right:0;background:var(--navy);
    flex-direction:column;align-items:stretch;padding:12px 20px 20px;
    display:none;gap:2px;box-shadow:0 12px 20px rgba(0,0,0,.2);
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 14px}
  .nav-cta{margin-left:0;margin-top:6px}
}

/* HERO */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(135deg,var(--navy) 0%,#014a89 55%,var(--blue) 100%);
  padding:110px 0 100px;
}
.hero::before{
  content:"";position:absolute;inset:0;opacity:.14;pointer-events:none;z-index:1;
  background-image:radial-gradient(circle at 20% 20%,#fff 1px,transparent 1px),
                    radial-gradient(circle at 70% 60%,#fff 1px,transparent 1px);
  background-size:60px 60px,90px 90px;
}
.hero-video{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0;
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(135deg,rgba(0,60,112,.82) 0%,rgba(1,74,137,.75) 55%,rgba(19,109,189,.72) 100%);
}
.hero-inner{position:relative;max-width:760px;z-index:2}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;
  letter-spacing:.06em;text-transform:uppercase;color:#fff;background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.25);padding:7px 14px;border-radius:999px;margin-bottom:22px;
}
.hero h1{color:#fff;font-size:clamp(32px,4.8vw,56px);line-height:1.1;margin-bottom:20px}
.hero p{font-size:18px;color:rgba(255,255,255,.85);max-width:600px;margin-bottom:32px}

/* STATS */
.stats-band{background:var(--navy);color:#fff;padding:44px 0}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:24px;text-align:center}
.stat-num{font-family:'Montserrat',sans-serif;font-weight:700;font-size:clamp(28px,3.4vw,40px);color:var(--orange)}
.stat-label{font-size:14px;color:rgba(255,255,255,.75);margin-top:6px}
.stats-source{font-size:11.5px;font-style:italic;color:#fff;text-align:center;margin-top:20px}

/* ÉTAPES — CARTES FLIP (Économies et Transition Énergétique) */
.etape-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
@media (max-width:1000px){.etape-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.etape-grid{grid-template-columns:1fr}}
.etape-slot{position:relative;height:230px}
.etape-scene{
  position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:100%;height:230px;z-index:1;perspective:1600px;outline:none;
  transition:width .6s cubic-bezier(.4,.2,.2,1),height .6s cubic-bezier(.4,.2,.2,1),z-index 0s;
}
.etape-scene:hover,
.etape-scene:focus-within,
.etape-scene.flipped{width:200%;height:570px;z-index:30}
.etape-card{
  position:relative;width:100%;height:100%;transform-style:preserve-3d;cursor:pointer;
  transition:transform .6s cubic-bezier(.4,.2,.2,1),box-shadow .6s ease;
}
.etape-scene:hover .etape-card,
.etape-scene:focus-within .etape-card,
.etape-scene.flipped .etape-card{transform:rotateY(180deg);box-shadow:0 24px 48px rgba(0,0,0,.28)}
.etape-face{
  position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;
  border-radius:var(--radius);padding:26px 22px;display:flex;flex-direction:column;
  box-shadow:0 6px 18px rgba(0,0,0,.12);
}
.etape-front{background:var(--surface);justify-content:center}
.etape-front .phase{font-size:20px;font-weight:700;color:var(--navy);margin-bottom:10px}
.etape-front .tagline{font-size:16px;font-style:italic;font-weight:400;color:var(--orange);margin-bottom:14px}
.etape-front .hover-hint{margin-top:auto;font-size:11px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
.etape-back{background:var(--navy);color:#fff;transform:rotateY(180deg);overflow-y:auto;padding-top:60px}
.etape-back h4{font-size:12.5px;font-weight:700;color:var(--orange);text-transform:uppercase;letter-spacing:.05em;margin-bottom:4px}
.etape-back p{font-size:13px;font-weight:400;line-height:1.55;color:rgba(255,255,255,.95);margin-bottom:10px}
.etape-back p a{color:var(--orange);font-weight:700;text-decoration:underline}
.etape-float-cta{
  position:absolute;top:14px;right:14px;z-index:2;
  background:var(--orange);color:#fff;font-size:12px;font-weight:700;
  padding:8px 16px;border-radius:999px;box-shadow:0 4px 12px rgba(0,0,0,.3);
  transition:background .2s ease,transform .2s ease;
}
.etape-float-cta:hover{background:#dd8232;transform:translateY(-2px)}
@media (prefers-reduced-motion:reduce){.etape-card{transition:none}.etape-scene{transition:none}}
@media (max-width:640px){
  /* Sur mobile, la carte grandit sur place (largeur 100%) au lieu de déborder à 200% de large hors de l'écran */
  .etape-scene:hover,
  .etape-scene:focus-within,
  .etape-scene.flipped{width:100%;height:420px}
  .etape-back{padding-top:56px}
  /* Côté pile (face avant) réduit au seul titre, pour ne pas monopoliser l'écran avant retournement */
  .etape-slot,.etape-scene{height:100px}
  .etape-front .tagline,.etape-front .hover-hint{display:none}
  .etape-front .phase{margin-bottom:0}
}

/* TARGET AUDIENCE — FLIP CARDS */
.audience-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px}
@media (max-width:400px){.audience-grid{grid-template-columns:1fr}}
.flip-slot{height:370px;position:relative}
.flip-card{
  position:absolute;top:0;left:0;width:100%;height:370px;z-index:1;
  perspective:1600px;outline:none;
  transition:height .6s cubic-bezier(.4,.2,.2,1);
}
.flip-card:hover,.flip-card:focus-within{height:740px;z-index:30}
.flip-card-inner{
  position:relative;width:100%;height:100%;transform-style:preserve-3d;
  transition:transform .6s cubic-bezier(.4,.2,.2,1),box-shadow .6s ease;border-radius:var(--radius);
}
.flip-card:hover .flip-card-inner,
.flip-card:focus-within .flip-card-inner{transform:rotateY(180deg);box-shadow:0 24px 48px rgba(0,0,0,.28)}
.flip-card-front,.flip-card-back{
  position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;
  border-radius:var(--radius);overflow:hidden;
}
.flip-card-front{
  display:flex;flex-direction:column;justify-content:flex-end;padding:24px;color:#fff;
  background-size:cover;background-position:center;
}
.flip-card-front::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(0,60,112,.15) 0%,rgba(0,60,112,.92) 100%);
}
.flip-card-front > *{position:relative}
.flip-card-front-tertiaire{background-image:url(/assets/img/pages/accueil/WalterreWallpaperTertiaire.jpg)}
.flip-card-front-bailleur{background-image:url(/assets/img/pages/accueil/WalterreWallpaperBailleur.jpg)}
.flip-card-front-copro{background-image:url(/assets/img/pages/accueil/WalterreWallpaperCopro.jpg)}
.flip-card-front .icon{font-size:32px;margin-bottom:10px}
.flip-card-front h3{color:#fff;font-size:20px;margin-bottom:8px}
.flip-card-front .hint{font-size:12.5px;font-weight:600;color:rgba(255,255,255,.82)}
.flip-card-back{
  transform:rotateY(180deg);background:var(--navy);border:1px solid var(--border);
  padding:22px;overflow-y:auto;
}
.flip-card-back h4{color:#fff;font-size:17px;margin-bottom:10px}
.flip-card-back h4 span{display:block;font-weight:400;font-size:12.5px;color:rgba(255,255,255,.8);margin-top:2px}
.flip-card-back p{font-size:13.5px;font-weight:400;line-height:1.6;color:rgba(255,255,255,.95);margin-bottom:10px}
.flip-card-back p strong{color:var(--orange);font-weight:700}
.flip-card-back p a{color:var(--orange);font-weight:700;text-decoration:underline}
.flip-card-back ul{margin:0 0 10px 18px;list-style:disc}
.flip-card-back li{font-size:13.5px;font-weight:400;line-height:1.6;color:rgba(255,255,255,.95);margin-bottom:5px}
.flip-card-back .link{font-size:13px;font-weight:700;color:var(--orange)}
@media (prefers-reduced-motion:reduce){.flip-card-inner{transition:none}.flip-card{transition:none}}
@media (max-width:640px){
  /* Côté pile (face avant) réduit au seul titre, pour ne pas monopoliser l'écran avant retournement */
  .flip-slot,.flip-card{height:100px}
  .flip-card-front{padding:16px}
  .flip-card-front .icon,.flip-card-front .hint{display:none}
  .flip-card-front h3{margin-bottom:0}
}

/* VALUES */
.values-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px}
.value-card{
  text-align:center;padding:32px 26px;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
}
.value-card.value-card-green{background:var(--lg);border-color:transparent}
.value-card.value-card-blue{background:var(--lb);border-color:transparent}
.value-card.value-card-orange{background:var(--lo);border-color:transparent}
.value-card .icon{
  width:56px;height:56px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;font-size:26px;margin:0 auto 18px;
}
.value-card .icon.icon-green{background:#fff;color:var(--green)}
.value-card .icon.icon-blue{background:#fff;color:var(--blue)}
.value-card .icon.icon-orange{background:#fff;color:var(--orange)}
.value-card h3{font-size:16px;margin-bottom:8px}
.value-card p{color:var(--muted);font-size:14px}

/* TEAM */
.team-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:24px}
.team-card{text-align:center}
.avatar{
  width:128px;height:128px;border-radius:50%;margin:0 auto 16px;
  background:linear-gradient(135deg,var(--blue),var(--navy));color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:'Montserrat',sans-serif;font-weight:700;font-size:32px;
}
.avatar-photo{
  width:128px;height:128px;border-radius:50%;margin:0 auto 16px;
  object-fit:cover;border:2px solid var(--border);
}
.team-card h3{font-size:14.5px;color:var(--black);margin-bottom:2px}
.team-card p{font-size:12.5px;color:var(--muted)}
@media (max-width:640px){
  /* Deux médaillons par ligne, plus petits et plus rapprochés */
  .team-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .avatar,.avatar-photo{width:76px;height:76px;margin:0 auto 8px}
  .team-card h3{font-size:12.5px}
  .team-card p{font-size:11px}
}

/* SECTION HEADER ROW (titre + badge alignés) */
.section-header-row{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.section-title-flush{margin-bottom:0}

/* TRUSTFOLIO BADGE */
.trustfolio-badge{display:flex;justify-content:center;width:300px;flex:0 0 auto}

/* TESTIMONIAL MARQUEE (avis clients Trustfolio, défilement horizontal) */
.testimonial-marquee{
  overflow:hidden;margin-top:36px;padding:0 24px;
  mask-image:linear-gradient(to right,transparent,#000 4%,#000 96%,transparent);
  -webkit-mask-image:linear-gradient(to right,transparent,#000 4%,#000 96%,transparent);
}
.testimonial-track{display:flex;gap:20px;width:max-content;animation:marquee 55s linear infinite;padding-bottom:4px}
.testimonial-marquee:hover .testimonial-track{animation-play-state:paused}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(calc(-100% - 20px))}}
.testimonial-card{
  flex:0 0 300px;width:300px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:18px 20px;display:flex;flex-direction:column;gap:6px;
}
.testimonial-card .rating{color:var(--orange);font-weight:700;font-size:13px}
.testimonial-card .quote{
  color:var(--black);font-size:13.5px;line-height:1.5;margin:0;flex:1;
  display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden;
}
.testimonial-card .author{font-size:12.5px;font-weight:700;color:var(--navy)}
.testimonial-card .author span{display:block;font-weight:400;color:var(--muted);font-size:12px;margin-top:2px}
.testimonial-card .link{font-size:12.5px;font-weight:700;color:var(--blue);margin-top:4px}
@media (prefers-reduced-motion:reduce){
  .testimonial-track{animation:none}
  .testimonial-marquee{overflow-x:auto}
}

/* PARTNERS */
.partner-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.partner-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;
}
.partner-card h3{font-size:16px;margin-bottom:8px}
.partner-card p{color:var(--muted);font-size:14px}
.partner-card p a{color:var(--blue);font-weight:700}
.partner-logos{
  display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:32px;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:32px;margin-bottom:20px;
}
.partner-logos img{height:40px;width:auto;max-width:140px;object-fit:contain;filter:grayscale(0);opacity:1;transition:all .2s}
.partner-logos img:hover{filter:grayscale(1);opacity:.75}

/* CTA FINAL */
.cta-final{
  background:linear-gradient(135deg,var(--green) 0%,#0f5230 100%);color:#fff;text-align:center;
  padding:70px 0;
}
.cta-final h2{color:#fff;font-size:clamp(24px,3.4vw,36px);margin-bottom:22px}
.cta-final .btn-row{justify-content:center}

/* FOOTER */
.site-footer{background:#00223f;color:rgba(255,255,255,.7);padding:48px 0 24px;font-size:13.5px}
.footer-logo{margin-bottom:14px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-grid h4{color:#fff;font-size:13px;margin-bottom:14px;text-transform:uppercase;letter-spacing:.05em}
.footer-grid a{display:block;padding:5px 0;color:rgba(255,255,255,.65)}
.footer-grid a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:12.5px;color:rgba(255,255,255,.45)}
.footer-social{margin-top:18px}
.footer-social a{
  display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;
  padding:0;border-radius:50%;background:rgba(255,255,255,.1);color:#fff;
  transition:background .2s ease,transform .2s ease;
}
.footer-social a:hover{background:var(--orange);color:#fff;transform:translateY(-2px)}
.footer-social svg{width:18px;height:18px}
@media (max-width:700px){.footer-grid{grid-template-columns:1fr}}

/* LAYOUT UTILITY */
.container-narrow{max-width:640px}

/* CONTACT FORM */
.contact-form{display:flex;flex-direction:column;gap:20px}
.contact-form .btn{align-self:center}
.form-field{display:flex;flex-direction:column;gap:6px}
.form-field label{font-size:14px;font-weight:600;color:var(--navy)}
.form-field input,.form-field textarea{
  font-family:'Montserrat',Arial,sans-serif;font-size:15px;font-weight:400;color:var(--black);
  background:var(--surface);border:1px solid var(--border);border-radius:10px;
  padding:12px 14px;resize:vertical;
}
.form-field input:focus,.form-field textarea:focus{outline:2px solid var(--blue);outline-offset:1px}
.form-checkbox{display:flex;align-items:flex-start;gap:10px}
.form-checkbox input{margin-top:3px;flex:0 0 auto}
.form-checkbox label{font-size:13px;color:var(--muted);line-height:1.5}
.form-checkbox a{color:var(--blue);font-weight:700}
.hp-field{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.form-success,.form-error{
  margin-top:24px;padding:18px 20px;border-radius:var(--radius);font-size:14.5px;
}
.form-success{background:var(--lg);color:var(--green);border:1px solid #b8e2c8}
.form-error{background:var(--lo);color:#8a5a1a;border:1px solid #f0cf9e}
.form-error a{color:inherit;font-weight:700;text-decoration:underline}

/* LEGAL CONTENT (politique de confidentialité) */
.legal-content h2{font-size:19px;margin:32px 0 10px}
.legal-content p{color:var(--muted);font-size:15px;line-height:1.65;margin-bottom:4px}
.legal-content a{color:var(--blue);font-weight:700}