/* ==========================================================================
   NGKS SERVICES EXPRESS CONSTRUCTION — feuille de style partagée
   Palette : bleu structure / gris acier — style moderne et épuré
   ========================================================================== */

:root{
  /* couleurs — palette d'origine restaurée (ink / walnut / brass / parchment) */
  --navy-950:#0A0A0B;              /* fond sombre principal (ink) */
  --navy-800:#18181B;              /* surface sombre secondaire (walnut) */
  --navy-700:#242427;              /* surface sombre, hover (walnut-light) */
  --blue-600:#C6A250;              /* accent doré de marque (brass) */
  --blue-500:#E2C583;              /* accent doré clair, hover (brass-light) */
  --blue-400:#E2C583;              /* accent doré clair sur fond sombre (brass-light) */
  --steel-500:#9C9484;             /* gris-brun sourdine, texte secondaire sur sombre (sawdust) */
  --steel-300:rgba(243,239,227,0.68); /* texte atténué sur fond sombre (parchment-dim) */
  --concrete-100:#F3EFE3;          /* fond clair (parchment) */
  --concrete-200:#EAE3D2;
  --white:#F3EFE3;                 /* texte à forte emphase sur fond sombre (parchment) */
  --graphite-900:#141414;          /* texte sur fond clair (charcoal-text) */
  --graphite-600:rgba(20,20,20,0.66); /* texte secondaire sur fond clair (charcoal-dim) */
  --line-dark:rgba(156,148,132,0.15); /* lignes fines sur fond sombre */
  --line-light:rgba(20,20,20,0.14);   /* lignes fines sur fond clair */
  --max:1140px;
  --radius:6px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important;}
}

body{
  margin:0;
  background:var(--navy-950);
  color:var(--concrete-100);
  font-family:'Inter', sans-serif;
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3{
  font-family:'Big Shoulders Display', sans-serif;
  font-weight:700;
  line-height:1.02;
  margin:0;
  letter-spacing:0.01em;
}

a{color:inherit;}
img{max-width:100%; display:block;}
section{padding:clamp(60px, 9vw, 110px) 24px;}
.wrap{max-width:var(--max); margin:0 auto;}

/* liens de saut de page (accessibilité) */
.skip-link{
  position:absolute; left:-9999px; top:0; z-index:100;
  background:var(--blue-600); color:var(--navy-950); padding:10px 16px; border-radius:var(--radius);
}
.skip-link:focus{left:16px; top:16px;}

:focus-visible{outline:2px solid var(--blue-400); outline-offset:3px;}

/* ===== petites étiquettes de section (utilisées avec parcimonie) ===== */
.tag{
  display:inline-flex; align-items:center; gap:8px;
  font-size:0.86rem; color:var(--blue-400);
  margin:0 0 16px;
  border-bottom:2px solid var(--blue-600);
  padding-bottom:4px;
}
.light-section .tag{color:var(--blue-600); border-bottom-color:var(--blue-600);}

/* ===== boutons ===== */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:14px 26px;
  border-radius:var(--radius);
  font-family:'Inter', sans-serif;
  font-weight:600;
  font-size:0.96rem;
  text-decoration:none;
  border:1px solid transparent;
  cursor:pointer;
  transition:background 0.16s ease, border-color 0.16s ease, color 0.16s ease;
}
.btn:focus-visible{outline:2px solid var(--blue-400); outline-offset:3px;}
.btn-primary{background:var(--blue-600); color:var(--navy-950);}
.btn-primary:hover{background:var(--blue-500);}
.btn-outline{border-color:var(--steel-500); color:var(--concrete-100);}
.btn-outline:hover{border-color:var(--concrete-100); background:rgba(255,255,255,0.04);}
.light-section .btn-outline{border-color:var(--graphite-600); color:var(--graphite-900);}
.light-section .btn-outline:hover{border-color:var(--graphite-900); background:rgba(20,20,20,0.04);}

/* ===== NAV ===== */
header{
  position:sticky; top:0; z-index:50;
  background:rgba(10,10,11,0.94);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line-dark);
}
nav.wrap{
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 24px;
}
.brand{display:flex; align-items:center; text-decoration:none; color:var(--concrete-100);}
.brand-logo{height:50px; width:50px; border-radius:9px; display:block;}
.brand-name{font-family:'Big Shoulders Display', sans-serif; font-weight:700; font-size:clamp(1.1rem, 2.6vw, 1.4rem); letter-spacing:0.01em; line-height:1; white-space:nowrap;}
.brand-sub{font-size:0.68rem; letter-spacing:0.05em; color:var(--steel-500);}
.nav-links{display:flex; align-items:center; gap:30px; list-style:none; margin:0; padding:0;}
.nav-links a{text-decoration:none; font-size:0.95rem; color:var(--steel-300); transition:color 0.15s ease;}
.nav-links a:hover, .nav-links a[aria-current="page"]{color:var(--white);}
.nav-links a[aria-current="page"]{border-bottom:2px solid var(--blue-500); padding-bottom:2px;}
.nav-cta{display:none;}
.nav-toggle{display:none; background:none; border:none; color:var(--concrete-100); cursor:pointer; padding:6px;}

@media (max-width:780px){
  .nav-links{
    position:absolute; top:100%; left:0; right:0;
    background:var(--navy-950); flex-direction:column; align-items:flex-start;
    padding:18px 24px 26px; gap:16px;
    border-bottom:1px solid var(--line-dark);
    display:none;
  }
  .nav-links.open{display:flex;}
  .nav-toggle{display:block;}
}
@media (min-width:781px){ .nav-cta{display:inline-flex;} }

/* ===== HERO — motif de grille "plan technique" ===== */
.hero{
  position:relative;
  overflow:hidden;
  padding-top:clamp(70px, 11vw, 120px);
  min-height:560px;
  display:flex; align-items:center;
  background:
    linear-gradient(180deg, rgba(10,10,11,0.2) 0%, var(--navy-950) 78%),
    repeating-linear-gradient(0deg, rgba(198,162,80,0.10) 0px, rgba(198,162,80,0.10) 1px, transparent 1px, transparent 64px),
    repeating-linear-gradient(90deg, rgba(198,162,80,0.10) 0px, rgba(198,162,80,0.10) 1px, transparent 1px, transparent 64px),
    var(--navy-950);
}
@media (min-width:760px){ .hero{min-height:620px;} }
.hero .wrap{position:relative; z-index:2; width:100%;}
.hero-content{animation:hero-in 0.8s cubic-bezier(.2,.7,.3,1) both;}
@keyframes hero-in{
  from{opacity:0; transform:translateY(16px);}
  to{opacity:1; transform:translateY(0);}
}
@media (prefers-reduced-motion: reduce){ .hero-content{animation:none;} }
.hero-mark{position:absolute; right:6%; top:14%; width:min(320px, 34vw); border-radius:10px; z-index:1; pointer-events:none;}
@media (max-width:760px){
  .hero{display:block; padding-bottom:40px;}
  .hero-mark{
    position:static;
    display:block;
    width:150px;
    margin:8px auto 0;
  }
}
.hero h1{
  font-size:clamp(2.3rem, 5.2vw, 4rem);
  max-width:17ch;
  margin-bottom:22px;
  color:var(--white);
}
.hero-sub{
  font-size:clamp(1rem, 1.5vw, 1.15rem);
  color:var(--steel-300);
  max-width:52ch;
  margin-bottom:32px;
}
.hero-actions{display:flex; flex-wrap:wrap; gap:14px; margin-bottom:22px;}
.hero-trust{color:var(--steel-500); font-size:0.86rem; margin:0;}

/* petit repère de cote (dimension line) — signature visuelle, usage ponctuel */
.dim-mark{display:inline-flex; align-items:center; gap:8px; color:var(--steel-500); font-size:0.82rem;}
.dim-mark svg{display:block;}

/* ===== BANNIÈRE DE SOUS-PAGE (catalogue, à propos) ===== */
.page-intro{
  position:relative;
  padding:clamp(70px, 10vw, 110px) 24px 56px;
  background:
    linear-gradient(180deg, rgba(10,10,11,0.2) 0%, var(--navy-950) 85%),
    repeating-linear-gradient(0deg, rgba(198,162,80,0.10) 0px, rgba(198,162,80,0.10) 1px, transparent 1px, transparent 64px),
    repeating-linear-gradient(90deg, rgba(198,162,80,0.10) 0px, rgba(198,162,80,0.10) 1px, transparent 1px, transparent 64px),
    var(--navy-950);
}
.page-intro .wrap{animation:hero-in 0.7s cubic-bezier(.2,.7,.3,1) both;}
@media (prefers-reduced-motion: reduce){ .page-intro .wrap{animation:none;} }
.page-intro h1{font-size:clamp(2rem, 4.2vw, 3.1rem); color:var(--white); max-width:22ch; margin-bottom:14px;}
.page-intro p{color:var(--steel-300); max-width:60ch; font-size:1.02rem; margin:0;}

/* ===== bandeau CTA centré (bas de page) ===== */
.cta-strip{background:var(--navy-800); text-align:center;}
.cta-strip h2{font-size:clamp(1.7rem, 3vw, 2.2rem); color:var(--white); max-width:22ch; margin:0 auto 14px;}
.cta-strip p{color:var(--steel-300); max-width:46ch; margin:0 auto 28px; font-size:1.01rem;}

/* ===== SECTIONS CLAIRES / SOMBRES ===== */
.light-section{background:var(--concrete-100); color:var(--graphite-900);}
.dark-section{background:var(--navy-950);}
.alt-section{background:var(--navy-800);}

.section-head{max-width:60ch; margin-bottom:48px;}
.section-head h2{font-size:clamp(1.8rem, 3.4vw, 2.5rem); color:inherit;}
.light-section .section-head h2{color:var(--graphite-900);}
.section-head p{margin:14px 0 0; max-width:56ch; color:var(--steel-300); font-size:1.02rem;}
.light-section .section-head p{color:var(--graphite-600);}

.split{display:grid; grid-template-columns:1fr; gap:44px; align-items:start;}
@media (min-width:860px){ .split{grid-template-columns:1.15fr 0.85fr; gap:64px;} }
.split h2{font-size:clamp(1.8rem, 3.2vw, 2.4rem); max-width:18ch; margin-bottom:20px;}
.split p{max-width:56ch; margin:0 0 15px; font-size:1.01rem;}
.light-section .split p{color:var(--graphite-600);}
.dark-section .split p, .alt-section .split p{color:var(--steel-300);}

/* ===== GRILLE DE SERVICES — blocs à bordure, pas de carte SaaS générique ===== */
.grid{display:grid; grid-template-columns:1fr; gap:1px; background:var(--line-dark); border:1px solid var(--line-dark);}
@media (min-width:640px){ .grid{grid-template-columns:1fr 1fr;} }
@media (min-width:980px){ .grid{grid-template-columns:repeat(3, 1fr);} }
.light-section .grid{background:var(--line-light); border-color:var(--line-light);}

.service{
  background:var(--navy-950);
  padding:30px 26px;
  display:flex; flex-direction:column; gap:14px;
}
.light-section .service{background:var(--concrete-100);}
.service-icon{width:34px; height:34px; color:var(--blue-400); flex-shrink:0;}
.light-section .service-icon{color:var(--blue-600);}
.service h3{font-size:1.1rem; font-family:'Big Shoulders Display', sans-serif; font-weight:700; letter-spacing:0.005em;}
.service p{margin:0; color:var(--steel-300); font-size:0.94rem;}
.light-section .service p{color:var(--graphite-600);}

/* ===== POURQUOI NOUS CHOISIR — liste à repères, pas de puces numérotées ===== */
.benefits{display:grid; grid-template-columns:1fr; gap:22px 40px; margin-top:8px;}
@media (min-width:700px){ .benefits{grid-template-columns:1fr 1fr;} }
.benefit{display:flex; gap:14px; align-items:flex-start;}
.benefit-mark{width:20px; height:20px; margin-top:3px; flex-shrink:0; color:var(--blue-600);}
.benefit h4{margin:0 0 4px; font-family:'Inter', sans-serif; font-weight:600; font-size:1rem; color:var(--graphite-900);}
.benefit p{margin:0; font-size:0.92rem; color:var(--graphite-600);}
.dark-section .benefit-mark, .alt-section .benefit-mark{color:var(--blue-400);}
.dark-section .benefit h4, .alt-section .benefit h4{color:var(--white);}
.dark-section .benefit p, .alt-section .benefit p{color:var(--steel-300);}

/* ===== VALEURS — puces indépendantes, jamais reliées par des points médians ===== */
.value-list{display:flex; flex-wrap:wrap; gap:10px; margin-top:6px; list-style:none; padding:0;}
.value-list li{
  border:1px solid var(--line-dark);
  padding:8px 16px;
  border-radius:999px;
  font-size:0.88rem;
  color:var(--steel-300);
}
.light-section .value-list li{border-color:var(--line-light); color:var(--graphite-900);}

/* ===== ÉTAPES — véritable séquence, numérotation justifiée ===== */
.steps{display:grid; grid-template-columns:1fr; gap:0; margin-top:40px;}
@media (min-width:860px){ .steps{grid-template-columns:repeat(4, 1fr); gap:28px;} }
.step{padding:24px 0; border-top:1px solid var(--line-light);}
@media (min-width:860px){ .step{border-top:none; padding:0;} }
.step-num{font-family:'Big Shoulders Display', sans-serif; font-weight:700; font-size:1.6rem; color:var(--blue-600); display:block; margin-bottom:10px;}
.step h3{font-size:1.05rem; margin-bottom:8px; font-family:'Inter', sans-serif; font-weight:600;}
.step p{margin:0; color:var(--graphite-600); font-size:0.93rem;}

/* ===== CTA / CONTACT ===== */
.contact{background:var(--navy-800); text-align:left;}
.contact .wrap{display:grid; grid-template-columns:1fr; gap:40px;}
@media (min-width:860px){ .contact .wrap{grid-template-columns:1.1fr 0.9fr;} }
.contact h2{font-size:clamp(1.9rem, 3.6vw, 2.6rem); max-width:16ch; margin-bottom:16px; color:var(--white);}
.contact-sub{color:var(--steel-300); max-width:44ch; margin:0 0 28px; font-size:1.01rem;}
.contact-meta{margin-top:8px; color:var(--steel-300); font-size:0.94rem; display:flex; flex-direction:column; gap:10px;}
.contact-meta strong{color:var(--white); font-weight:600; display:inline-block; min-width:110px;}
.contact-card{border:1px solid var(--line-dark); padding:28px; border-radius:var(--radius); background:var(--navy-950);}
.contact-card h3{font-family:'Inter', sans-serif; font-size:1rem; font-weight:600; margin-bottom:16px; color:var(--white);}

footer{
  border-top:1px solid var(--line-dark);
  padding:36px 24px 28px;
  color:var(--steel-500); font-size:0.86rem;
}
.footer-wrap{max-width:var(--max); margin:0 auto; display:flex; flex-wrap:wrap; justify-content:space-between; gap:20px;}
.footer-brand{color:var(--concrete-100); font-weight:600; font-size:0.94rem; margin-bottom:6px;}
.footer-links{display:flex; gap:20px; list-style:none; padding:0; margin:0; flex-wrap:wrap;}
.footer-links a{text-decoration:none; color:var(--steel-500);}
.footer-links a:hover{color:var(--concrete-100);}

/* ===== réservé aux images à venir ===== */
.placeholder-photo{
  position:relative;
  background:linear-gradient(145deg, var(--navy-800) 0%, var(--navy-950) 100%);
  border:1px dashed var(--line-dark);
  border-radius:var(--radius);
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:10px;
  color:var(--steel-500);
  text-align:center;
  padding:20px;
}
.placeholder-photo svg{width:34px; height:34px; opacity:0.7;}
.placeholder-photo span{font-size:0.8rem; max-width:22ch; font-style:italic;}
.light-section .placeholder-photo{background:#FFFFFF; border-color:var(--line-light);}

/* ===== CATALOGUE ===== */
.filters{display:flex; flex-wrap:wrap; gap:10px; margin:36px 0 40px;}
.filter-btn{
  border:1px solid var(--line-light); background:transparent; color:var(--graphite-600);
  padding:9px 18px; border-radius:999px; font-family:'Inter', sans-serif; font-size:0.88rem;
  cursor:pointer; transition:background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.filter-btn:hover{border-color:var(--graphite-900);}
.filter-btn.is-active{background:var(--blue-600); color:var(--navy-950); border-color:var(--blue-600);}

.catalogue-grid{display:grid; grid-template-columns:1fr; gap:22px;}
@media (min-width:640px){ .catalogue-grid{grid-template-columns:1fr 1fr;} }
@media (min-width:1000px){ .catalogue-grid{grid-template-columns:repeat(3, 1fr);} }
.catalogue-item{display:flex; flex-direction:column; gap:0;}
.catalogue-item .placeholder-photo{aspect-ratio:4/3; width:100%;}
.catalogue-photo{aspect-ratio:4/3; width:100%; object-fit:cover; border-radius:var(--radius); display:block;}
.catalogue-item-body{padding:14px 2px 0;}
.catalogue-item-cat{font-size:0.76rem; color:var(--blue-600); font-weight:600; margin-bottom:4px; display:block;}
.catalogue-item h3{font-family:'Inter', sans-serif; font-weight:600; font-size:1rem; color:var(--graphite-900);}
.dark-section .catalogue-item-cat, .alt-section .catalogue-item-cat{color:var(--blue-400);}
.dark-section .catalogue-item h3, .alt-section .catalogue-item h3{color:var(--white);}
.catalogue-item.is-hidden{display:none;}

/* ===== À PROPOS — CEO & équipe ===== */
.ceo-block{display:grid; grid-template-columns:1fr; gap:36px; align-items:start; margin-top:20px;}
@media (min-width:760px){ .ceo-block{grid-template-columns:280px 1fr;} }
.ceo-block .placeholder-photo{aspect-ratio:1/1;}
.ceo-name{font-family:'Big Shoulders Display', sans-serif; font-size:1.5rem; font-weight:700; color:var(--graphite-900); margin-bottom:4px;}
.ceo-title{color:var(--blue-600); font-size:0.92rem; font-weight:600; margin-bottom:16px;}
.ceo-bio{color:var(--graphite-600); font-size:0.98rem; font-style:italic;}

.team-grid{display:grid; grid-template-columns:1fr; gap:28px; margin-top:36px;}
@media (min-width:600px){ .team-grid{grid-template-columns:repeat(2, 1fr);} }
@media (min-width:980px){ .team-grid{grid-template-columns:repeat(3, 1fr);} }
.team-card .placeholder-photo{aspect-ratio:1/1; margin-bottom:14px;}
.team-name{font-weight:600; color:var(--graphite-900); font-size:1rem; margin-bottom:2px;}
.team-role{color:var(--graphite-600); font-size:0.88rem;}
.dark-section .team-name, .alt-section .team-name{color:var(--white);}
.dark-section .team-role, .alt-section .team-role{color:var(--steel-300);}

/* ===== histoire / bio — citation ===== */
.pull{
  margin-top:24px; padding-top:18px; border-top:1px solid var(--line-light);
  font-style:italic; font-weight:500; font-size:1.08rem;
  color:var(--graphite-900); max-width:44ch;
}
.dark-section .pull, .alt-section .pull{color:var(--concrete-100); border-top-color:var(--line-dark);}

/* ===== bouton flottant WhatsApp ===== */
.fab{
  position:fixed; right:20px; bottom:20px; z-index:60;
  width:56px; height:56px; border-radius:50%;
  background:var(--blue-600); color:var(--navy-950);
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 8px 22px rgba(0,0,0,0.35);
  text-decoration:none;
  transition:background 0.16s ease;
}
.fab:hover{background:var(--blue-500);}
.fab svg{width:26px; height:26px;}

.sr-only{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0;
}