/* Mediom — Carnet de chantier — Maquette
   Palette + typo héritées de la propal Ankaa A4 */
:root{
  --encre:#20272E;
  --papier:#F5F1EA;
  --bleu:#15679E;
  --bleu-nuit:#08263E;
  --sable:#EDE7DC;
  --ligne:#DED8CE;
  --blanc:#FFFFFF;
  --gris:#6E7479;
  --display:'Archivo',sans-serif;
  --serif:'Spectral',Georgia,serif;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  background:var(--papier);
  font-family:var(--serif);
  color:var(--encre);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}

/* ===== HEADER ===== */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;justify-content:space-between;align-items:center;
  padding:18px 32px;
  background:rgba(245,241,234,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--ligne);
}
.nav .brand{
  font-family:var(--display);font-weight:900;letter-spacing:.18em;
  font-size:18px;display:flex;align-items:center;gap:10px;
}
.nav .brand .dot{
  width:14px;height:14px;border-radius:50%;background:var(--bleu);
  display:inline-block;
}
.nav ul{display:flex;gap:28px;list-style:none;}
.nav ul a{
  font-family:var(--display);font-weight:600;font-size:11px;
  letter-spacing:.22em;text-transform:uppercase;color:var(--encre);
}
.nav ul a:hover{color:var(--bleu);}
.nav .cta-mini{
  background:var(--encre);color:#fff;padding:10px 18px;
  font-family:var(--display);font-weight:700;font-size:11px;
  letter-spacing:.18em;text-transform:uppercase;border-radius:2px;
}
@media (max-width:768px){
  .nav{padding:14px 18px;}
  .nav ul{display:none;}
}

/* ===== HERO ===== */
.hero{
  position:relative;height:100vh;min-height:640px;
  background:#08263E;color:#fff;overflow:hidden;
}
.hero-bg{
  position:absolute;inset:0;
  background:url('photos/assets/grange-verriere.jpg') center/cover no-repeat;
}
.hero-shade{
  position:absolute;inset:0;
  background:linear-gradient(180deg,
    rgba(8,38,62,.55) 0%,
    rgba(8,38,62,.20) 35%,
    rgba(8,38,62,.18) 60%,
    rgba(8,38,62,.85) 100%);
}
.hero-inner{
  position:relative;z-index:2;height:100%;
  display:flex;flex-direction:column;justify-content:flex-end;
  padding:0 56px 80px;max-width:1400px;margin:0 auto;
}
.hero .kicker{
  font-family:var(--display);font-weight:700;font-size:11px;
  letter-spacing:.34em;text-transform:uppercase;
  margin-bottom:20px;opacity:.92;
}
.hero h1{
  font-family:var(--display);font-weight:900;
  font-size:clamp(40px,7vw,82px);line-height:.96;letter-spacing:-.02em;
  max-width:1100px;
}
.hero h1 .thin{font-weight:500;}
.hero .tagline{
  margin-top:24px;max-width:620px;font-size:18px;
  font-family:var(--serif);line-height:1.5;opacity:.94;
}
.hero-ctas{
  display:flex;gap:14px;margin-top:36px;flex-wrap:wrap;
}
.btn{
  display:inline-block;padding:18px 32px;
  font-family:var(--display);font-weight:700;font-size:12px;
  letter-spacing:.22em;text-transform:uppercase;
  border:2px solid #fff;color:#fff;cursor:pointer;
  transition:background .18s,color .18s;
}
.btn:hover{background:#fff;color:var(--bleu-nuit);}
.btn.primary{background:#fff;color:var(--bleu-nuit);}
.btn.primary:hover{background:var(--bleu);color:#fff;border-color:var(--bleu);}
@media (max-width:768px){
  .hero-inner{padding:0 22px 60px;}
}

/* ===== SECTIONS ===== */
section{padding:100px 56px;max-width:1400px;margin:0 auto;}
@media (max-width:768px){section{padding:60px 22px;}}

.sec-head{
  display:flex;justify-content:space-between;align-items:flex-end;
  gap:40px;margin-bottom:48px;border-bottom:1.4px solid var(--encre);
  padding-bottom:18px;flex-wrap:wrap;
}
.sec-head .kicker{
  font-family:var(--display);font-weight:700;font-size:11px;
  letter-spacing:.32em;text-transform:uppercase;color:var(--bleu);
  margin-bottom:10px;
}
.sec-head h2{
  font-family:var(--display);font-weight:900;
  font-size:clamp(30px,4.5vw,54px);line-height:1;letter-spacing:-.018em;
}
.sec-head .lead{
  max-width:480px;font-size:15.5px;color:#3A4148;line-height:1.6;
}

/* ===== INTERIEUR — MOSAIQUE ===== */
.mosaic{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  grid-auto-rows:220px;
  gap:14px;
}
.mosaic .cell{
  overflow:hidden;position:relative;background:#222;
}
.mosaic .cell img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .6s;
}
.mosaic .cell:hover img{transform:scale(1.05);}
.mosaic .big{grid-column:span 2;grid-row:span 2;}
.mosaic .wide{grid-column:span 2;}
.mosaic .ba{position:relative;grid-column:span 2;}
.mosaic .ba .before, .mosaic .ba .after{
  position:absolute;inset:0;
}
.mosaic .ba .before img,.mosaic .ba .after img{
  width:100%;height:100%;object-fit:cover;
}
.mosaic .ba .after{clip-path:polygon(50% 0,100% 0,100% 100%,50% 100%);}
.mosaic .ba .label{
  position:absolute;top:14px;font-family:var(--display);font-weight:700;
  font-size:10px;letter-spacing:.28em;text-transform:uppercase;
  color:#fff;background:rgba(8,38,62,.78);padding:6px 12px;z-index:3;
}
.mosaic .ba .label.l{left:14px;}
.mosaic .ba .label.r{right:14px;}
@media (max-width:1024px){.mosaic{grid-template-columns:repeat(2,1fr);}}
@media (max-width:768px){
  .mosaic{grid-template-columns:1fr;grid-auto-rows:240px;}
  .mosaic .big,.mosaic .wide,.mosaic .ba{grid-column:span 1;grid-row:span 1;}
}

/* ===== REALISATIONS ===== */
.realisations{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:18px;
}
.card{
  position:relative;overflow:hidden;background:#08263E;color:#fff;
  aspect-ratio:4/5;cursor:pointer;
}
.card img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s,opacity .3s;
}
.card:hover img{transform:scale(1.06);opacity:.7;}
.card .meta{
  position:absolute;left:0;right:0;bottom:0;padding:22px;
  background:linear-gradient(0deg,rgba(8,38,62,.95) 0%,rgba(8,38,62,0) 100%);
  z-index:2;
}
.card .meta .tag{
  font-family:var(--display);font-weight:700;font-size:10px;
  letter-spacing:.28em;text-transform:uppercase;color:#fff;opacity:.78;
}
.card .meta h3{
  font-family:var(--display);font-weight:800;font-size:20px;
  line-height:1.1;margin-top:6px;color:#fff;
}
@media (max-width:1024px){.realisations{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.realisations{grid-template-columns:1fr;}}

/* ===== METHODE ===== */
.methode{
  background:var(--sable);margin:0;max-width:none;
  padding:100px 56px;
}
.methode-inner{max-width:1400px;margin:0 auto;}
.steps{
  display:grid;grid-template-columns:repeat(3,1fr);gap:0;
  margin-top:48px;
}
.step{
  padding:36px 28px;border-right:1px solid var(--ligne);
}
.step:last-child{border-right:none;}
.step .num{
  font-family:var(--display);font-weight:900;
  font-size:62px;color:var(--bleu);line-height:.9;
  letter-spacing:-.04em;margin-bottom:18px;
}
.step h3{
  font-family:var(--display);font-weight:800;font-size:22px;
  margin-bottom:10px;
}
.step p{font-size:14.5px;color:#3A4148;}
@media (max-width:768px){
  .methode{padding:60px 22px;}
  .steps{grid-template-columns:1fr;}
  .step{border-right:none;border-bottom:1px solid var(--ligne);padding:28px 0;}
  .step:last-child{border-bottom:none;}
}

/* ===== BANDEAU PRO ===== */
.bandeau-pro{
  position:relative;color:#fff;padding:120px 56px;max-width:none;
  background:linear-gradient(rgba(8,38,62,.78),rgba(8,38,62,.78)),
    url('photos/assets/sejour-acier.jpg') center/cover;
}
.bandeau-pro-inner{max-width:1400px;margin:0 auto;}
.bandeau-pro .kicker{
  font-family:var(--display);font-weight:700;font-size:11px;
  letter-spacing:.34em;text-transform:uppercase;
  color:#fff;opacity:.78;margin-bottom:18px;
}
.bandeau-pro h2{
  font-family:var(--display);font-weight:900;
  font-size:clamp(34px,5.5vw,64px);line-height:1;color:#fff;
  max-width:1000px;
}
.bandeau-pro p{
  margin-top:22px;font-size:17px;max-width:640px;
  font-family:var(--serif);line-height:1.55;opacity:.94;
}
.bandeau-pro .btn{margin-top:30px;}

/* ===== FOOTER ===== */
footer{
  background:var(--encre);color:#fff;padding:60px 56px 28px;
}
.foot-inner{
  max-width:1400px;margin:0 auto;
  display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;
}
.foot-inner h4{
  font-family:var(--display);font-weight:700;font-size:11px;
  letter-spacing:.28em;text-transform:uppercase;color:#fff;opacity:.7;
  margin-bottom:16px;
}
.foot-inner .brand-big{
  font-family:var(--display);font-weight:900;letter-spacing:.16em;
  font-size:24px;display:flex;align-items:center;gap:12px;margin-bottom:18px;
}
.foot-inner .brand-big .dot{width:16px;height:16px;background:var(--bleu);border-radius:50%;}
.foot-inner p, .foot-inner a{
  font-family:var(--serif);font-size:14.5px;color:#fff;opacity:.82;
  display:block;line-height:1.8;
}
.foot-inner a:hover{opacity:1;color:var(--bleu);}
.foot-bottom{
  max-width:1400px;margin:48px auto 0;padding-top:22px;
  border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;
  font-family:var(--display);font-size:10.5px;letter-spacing:.22em;
  text-transform:uppercase;opacity:.6;flex-wrap:wrap;gap:14px;
}
@media (max-width:768px){
  footer{padding:48px 22px 22px;}
  .foot-inner{grid-template-columns:1fr;gap:26px;}
}

/* ===== PRO PAGE ===== */
.hero.pro .hero-bg{background-image:url('photos/assets/extension-pierre.jpg');}

.benefices{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border-top:1.4px solid var(--encre);border-bottom:1.4px solid var(--encre);
}
.benefice{
  padding:42px 28px;border-right:1px solid var(--ligne);
}
.benefice:last-child{border-right:none;}
.benefice .num{
  font-family:var(--display);font-weight:900;font-size:13px;
  letter-spacing:.28em;color:var(--bleu);margin-bottom:14px;
}
.benefice h3{
  font-family:var(--display);font-weight:800;font-size:21px;
  margin-bottom:10px;line-height:1.15;
}
.benefice p{font-size:14px;color:#3A4148;}
@media (max-width:1024px){.benefices{grid-template-columns:repeat(2,1fr);}.benefice{border-bottom:1px solid var(--ligne);} .benefice:nth-child(odd){border-right:1px solid var(--ligne);} .benefice:nth-child(even){border-right:none;}}
@media (max-width:560px){.benefices{grid-template-columns:1fr;}.benefice{border-right:none;border-bottom:1px solid var(--ligne);}}

.pro-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:14px;
}
.pro-grid .ph{position:relative;aspect-ratio:4/3;overflow:hidden;}
.pro-grid .ph img{width:100%;height:100%;object-fit:cover;transition:transform .5s;}
.pro-grid .ph:hover img{transform:scale(1.05);}
.pro-grid .ph.tall{grid-row:span 2;aspect-ratio:auto;}
@media (max-width:768px){.pro-grid{grid-template-columns:1fr;}.pro-grid .ph.tall{grid-row:span 1;aspect-ratio:4/3;}}

/* form */
.form-wrap{
  background:var(--sable);padding:48px;margin-top:36px;
}
.form-wrap form{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{display:flex;flex-direction:column;}
.field.full{grid-column:span 2;}
.field label{
  font-family:var(--display);font-weight:700;font-size:10px;
  letter-spacing:.26em;text-transform:uppercase;color:var(--encre);
  margin-bottom:8px;
}
.field input,.field select,.field textarea{
  border:none;border-bottom:1.4px solid var(--encre);
  background:transparent;padding:12px 4px;
  font-family:var(--serif);font-size:15px;color:var(--encre);
  outline:none;
}
.field input:focus,.field textarea:focus,.field select:focus{
  border-bottom-color:var(--bleu);
}
.field textarea{resize:vertical;min-height:100px;}
.form-wrap button{
  grid-column:span 2;justify-self:start;
  background:var(--encre);color:#fff;padding:16px 32px;border:none;
  font-family:var(--display);font-weight:700;font-size:11px;
  letter-spacing:.22em;text-transform:uppercase;cursor:pointer;
}
.form-wrap button:hover{background:var(--bleu);}
@media (max-width:768px){
  .form-wrap{padding:28px;}
  .form-wrap form{grid-template-columns:1fr;}
  .field.full{grid-column:span 1;}
  .form-wrap button{grid-column:span 1;}
}

/* etapes */
.workflow{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  margin-top:24px;
}
.work-step{
  padding:30px 22px;border-right:1px solid var(--ligne);
  position:relative;
}
.work-step:last-child{border-right:none;}
.work-step .num{
  font-family:var(--display);font-weight:900;font-size:11px;
  letter-spacing:.32em;color:var(--bleu);margin-bottom:14px;
}
.work-step h3{font-family:var(--display);font-weight:800;font-size:19px;line-height:1.15;margin-bottom:8px;}
.work-step p{font-size:13.5px;color:#3A4148;}
@media (max-width:1024px){.workflow{grid-template-columns:repeat(2,1fr);}.work-step{border-bottom:1px solid var(--ligne);}}
@media (max-width:560px){.workflow{grid-template-columns:1fr;}.work-step{border-right:none;}}

.back-home{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--display);font-weight:700;font-size:11px;
  letter-spacing:.22em;text-transform:uppercase;color:var(--encre);
  margin-top:40px;border-bottom:1.4px solid var(--encre);padding-bottom:4px;
}
.back-home:hover{color:var(--bleu);border-bottom-color:var(--bleu);}