/* =========================================================
   KORING COMPANY — Design tokens
   Palette : noir chantier chaud, or de marque, sable, terre de latérite
   Typo    : Fraunces (display) + Manrope (texte) + IBM Plex Mono (annotations)
   Signature : registre de dessin technique (croix d'alignement, cotations,
               grille de calque, annotations d'échelle) — clin d'œil au
               monde de l'ingénierie (AutoCAD / Covadis / Robot Millenium)
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,500;0,9..144,600;0,9..144,700;1,9..144,400&family=Manrope:wght@400;500;600;700;800&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  --ink:        #14110D;
  --ink-soft:   #1E1A14;
  --gold:       #C9A227;
  --gold-light: #E7C767;
  --gold-dim:   #8A711E;
  --clay:       #9C4A2E;
  --paper:      #F4EEE0;
  --paper-alt:  #ECE3CE;
  --white:      #FFFFFF;
  --ash:        #7A756B;
  --ash-dark:   #4A4640;
  --line:       rgba(20,17,13,0.12);
  --line-dark:  rgba(231,199,103,0.18);

  --display: 'Fraunces', serif;
  --body: 'Manrope', sans-serif;
  --mono: 'IBM Plex Mono', monospace;

  --container: 1220px;
  --radius: 2px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--body);
  background:var(--paper);
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
svg{ width:24px; height:24px; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ font-family:var(--display); margin:0; font-weight:600; letter-spacing:-0.01em; }
p{ margin:0; }
.container{ max-width:var(--container); margin:0 auto; padding:0 32px; }

/* focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline:2px solid var(--gold); outline-offset:3px;
}
@media (prefers-reduced-motion: reduce){
  *{ animation-duration:0.001ms !important; transition-duration:0.001ms !important; scroll-behavior:auto !important; }
}

/* ---------- utility labels (drafting annotations) ---------- */
.eyebrow{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:0.18em;
  text-transform:uppercase;
  color:var(--gold);
  display:flex;
  align-items:center;
  gap:10px;
}
.eyebrow::before{
  content:"";
  width:22px; height:1px; background:var(--gold);
  display:inline-block;
}
.eyebrow.on-dark{ color:var(--gold-light); }

.plate-tag{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:0.08em;
  color:var(--ash);
  text-transform:uppercase;
}

/* corner registration crosses — blueprint signature */
.reg-frame{ position:relative; }
.reg-frame::before,.reg-frame::after{
  content:"+";
  position:absolute;
  font-family:var(--mono);
  font-size:14px;
  color:var(--gold-dim);
  opacity:0.55;
  line-height:1;
}
.reg-frame::before{ top:0; left:0; }
.reg-frame::after{ bottom:0; right:0; }
.reg-frame.on-dark::before,.reg-frame.on-dark::after{ color:var(--gold-light); opacity:0.4; }

/* dimension-line divider */
.dim-rule{
  display:flex; align-items:center; gap:14px;
  color:var(--ash);
  margin:0;
}
.dim-rule .seg{ flex:1; height:1px; background:var(--line); position:relative; }
.dim-rule .seg::before,.dim-rule .seg::after{
  content:""; position:absolute; top:-4px; width:1px; height:9px; background:var(--line);
}
.dim-rule .seg::before{ left:0; } .dim-rule .seg::after{ right:0; }
.dim-rule .label{ font-family:var(--mono); font-size:11px; letter-spacing:0.08em; white-space:nowrap; }
.dim-rule.on-dark{ color:var(--ash); }
.dim-rule.on-dark .seg,.dim-rule.on-dark .seg::before,.dim-rule.on-dark .seg::after{ background:var(--line-dark); }

/* blueprint grid watermark background */
.grid-bg{
  position:absolute; inset:0; pointer-events:none;
  background-image:
    linear-gradient(rgba(231,199,103,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(231,199,103,0.06) 1px, transparent 1px);
  background-size:44px 44px;
  mask-image:linear-gradient(to bottom, black, transparent 85%);
}

/* ---------- buttons ---------- */
.btn{
  font-family:var(--body);
  font-weight:700;
  font-size:14.5px;
  letter-spacing:0.01em;
  padding:15px 28px;
  border-radius:var(--radius);
  display:inline-flex;
  align-items:center;
  gap:10px;
  cursor:pointer;
  border:1px solid transparent;
  transition:transform .18s ease, background .18s ease, color .18s ease, border-color .18s ease;
}
.btn:hover{ transform:translateY(-2px); }
.btn-gold{ background:var(--gold); color:var(--ink); }
.btn-gold:hover{ background:var(--gold-light); }
.btn-ghost-dark{ background:transparent; color:var(--white); border-color:rgba(255,255,255,0.35); }
.btn-ghost-dark:hover{ border-color:var(--gold-light); color:var(--gold-light); }
.btn-ghost-light{ background:transparent; color:var(--ink); border-color:var(--line); }
.btn-ghost-light:hover{ border-color:var(--ink); }
.btn-block{ width:100%; justify-content:center; }

/* ---------- header ---------- */
header.site{
  position:sticky; top:0; z-index:100;
  background:rgba(20,17,13,0.96);
  border-bottom:1px solid rgba(231,199,103,0.14);
}
.nav-wrap{
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 32px;
  max-width:var(--container); margin:0 auto;
}
.brand{ display:flex; align-items:center; gap:11px; }
.brand img{ height:36px; width:auto; }
.brand-text{ font-family:var(--display); color:var(--white); font-size:17px; font-weight:600; letter-spacing:0.01em; line-height:1.1; }
.brand-text span{ display:block; font-family:var(--mono); font-size:9px; letter-spacing:0.14em; color:var(--gold-light); text-transform:uppercase; margin-top:2px; }

nav.main-nav ul{ display:flex; gap:28px; }
nav.main-nav a{
  font-family:var(--body); font-size:14px; font-weight:600; color:#D8D2C4;
  position:relative; padding:4px 0; transition:color .18s ease;
}
nav.main-nav a:hover, nav.main-nav a.active{ color:var(--gold-light); }
nav.main-nav a.active::after{
  content:""; position:absolute; left:0; right:0; bottom:-6px; height:2px; background:var(--gold);
}
.nav-cta{ display:flex; align-items:center; gap:18px; }
.nav-phone{ font-family:var(--mono); font-size:13px; color:var(--gold-light); display:flex; align-items:center; gap:7px; }

.menu-toggle{ display:none; background:none; border:none; cursor:pointer; padding:6px; }
.menu-toggle span{ display:block; width:24px; height:2px; background:var(--white); margin:5px 0; transition:.2s; }

@media (max-width:900px){
  nav.main-nav{
    position:fixed; inset:64px 0 0 0; background:var(--ink);
    transform:translateY(-110%); transition:transform .28s ease;
    padding:24px 32px; z-index:99; border-top:1px solid var(--line-dark);
  }
  nav.main-nav.open{ transform:translateY(0); }
  nav.main-nav ul{ flex-direction:column; gap:0; }
  nav.main-nav li{ border-bottom:1px solid var(--line-dark); }
  nav.main-nav a{ display:block; padding:16px 0; font-size:17px; }
  .nav-phone{ display:none; }
  .nav-cta{ gap:12px; }
  .nav-cta .btn{ padding:10px 14px; font-size:12.5px; }
  .menu-toggle{ display:block; }
  .brand-text{ font-size:15px; }
}
@media (max-width:480px){
  .nav-wrap{ padding:14px 18px; }
  .brand-text span{ display:none; }
  .nav-cta .btn{ padding:9px 12px; font-size:11.5px; }
}

/* ---------- hero ---------- */
.hero{
  position:relative; background:var(--ink); color:var(--white);
  overflow:hidden;
  padding:96px 0 84px;
}
.hero .container{ position:relative; z-index:2; display:flex; flex-wrap:wrap; gap:40px; align-items:center; }
.hero .container > div:first-child{ flex:1.05 1 460px; }
.hero .container > .hero-art{ flex:0.95 1 360px; }
.hero h1{
  font-size:clamp(38px, 5vw, 64px); line-height:1.04; color:var(--white); font-weight:600;
  margin:20px 0 24px;
}
.hero h1 em{ font-style:italic; font-weight:400; color:var(--gold-light); }
.hero p.lede{ font-size:17.5px; line-height:1.65; color:#CFC9BB; max-width:520px; margin-bottom:34px; }
.hero .actions{ display:flex; gap:16px; flex-wrap:wrap; }
.hero-art{ position:relative; }
.hero-art svg{ width:100%; height:auto; }

@media (max-width:900px){
  .hero .container > div:first-child,.hero .container > .hero-art{ flex-basis:100%; }
  .hero-art{ order:-1; max-width:340px; margin:0 auto 12px; }
}

/* ---------- sections generic ---------- */
section{ position:relative; }
.sec{ padding:104px 0; }
.sec-tight{ padding:72px 0; }
.sec-dark{ background:var(--ink); color:var(--white); }
.sec-alt{ background:var(--paper-alt); }
.sec-head{ max-width:680px; margin-bottom:56px; }
.sec-head h2{ font-size:clamp(28px,3.4vw,42px); margin-top:16px; line-height:1.12; }
.sec-dark .sec-head h2{ color:var(--white); }
.sec-head p{ margin-top:16px; color:var(--ash-dark); font-size:16px; line-height:1.6; }
.sec-dark .sec-head p{ color:#C7C1B3; }

/* ---------- value / stat strip ---------- */
.value-strip{ display:flex; flex-wrap:wrap; border:1px solid var(--line); background:var(--paper); }
.value-strip .cell{ flex:1 1 33.333%; padding:34px 30px; border-left:1px solid var(--line); }
.value-strip .cell:first-child{ border-left:none; }
.value-strip .cell .num{ font-family:var(--mono); color:var(--gold-dim); font-size:12px; letter-spacing:0.1em; }
.value-strip .cell h3{ font-size:19px; margin:12px 0 8px; }
.value-strip .cell p{ color:var(--ash-dark); font-size:14.5px; line-height:1.55; }
@media (max-width:760px){
  .value-strip .cell{ flex-basis:100%; border-left:none; border-top:1px solid var(--line); }
  .value-strip .cell:first-child{ border-top:none; }
}

/* ---------- cards ---------- */
.grid-2{ display:flex; flex-wrap:wrap; gap:26px; }
.grid-2 > *{ flex:0 1 calc(50% - 13px); }
.grid-3{ display:flex; flex-wrap:wrap; gap:26px; }
.grid-3 > *{ flex:0 1 calc(33.333% - 18px); }
.grid-4{ display:flex; flex-wrap:wrap; gap:22px; }
.grid-4 > *{ flex:0 1 calc(25% - 16.5px); }
@media (max-width:900px){ .grid-3 > *,.grid-4 > *{ flex-basis:calc(50% - 11px); } }
@media (max-width:600px){ .grid-2 > *,.grid-3 > *,.grid-4 > *{ flex-basis:100%; } }

.card{
  background:var(--white); border:1px solid var(--line); border-radius:var(--radius);
  padding:34px 30px; transition:border-color .2s ease, transform .2s ease;
}
.card:hover{ border-color:var(--gold-dim); transform:translateY(-3px); }
.card .ic{
  width:52px; height:52px; border-radius:50%; background:var(--ink);
  display:flex; align-items:center; justify-content:center; margin-bottom:20px;
}
.card .ic svg{ width:24px; height:24px; stroke:var(--gold); }
.card h3{ font-size:19px; margin-bottom:10px; }
.card p{ color:var(--ash-dark); font-size:14.5px; line-height:1.6; }
.card ul{ margin-top:14px; }
.card ul li{ font-size:14px; color:var(--ash-dark); padding:6px 0 6px 18px; position:relative; border-top:1px solid var(--line); }
.card ul li:first-child{ border-top:none; }
.card ul li::before{ content:""; position:absolute; left:0; top:15px; width:6px; height:6px; background:var(--gold); border-radius:50%; }

.card-dark{ background:var(--ink-soft); border:1px solid var(--line-dark); }
.card-dark h3{ color:var(--white); }
.card-dark p{ color:#BEB8AA; }
.card-dark .ic{ background:var(--gold); }
.card-dark .ic svg{ stroke:var(--ink); }

/* ---------- process timeline ---------- */
.process{ display:flex; position:relative; margin-top:20px; }
.process::before{
  content:""; position:absolute; top:29px; left:8%; right:8%; height:1px; background:var(--line-dark);
}
.process .step{ flex:1 1 20%; text-align:center; padding:0 8px; position:relative; }
.process .step .dot{
  width:58px; height:58px; border-radius:50%; background:var(--gold); color:var(--ink);
  display:flex; align-items:center; justify-content:center; margin:0 auto 18px; position:relative; z-index:2;
}
.process .step .dot svg{ width:26px; height:26px; stroke:var(--ink); fill:none; }
.process .step .idx{
  position:absolute; top:-26px; left:50%; transform:translateX(-50%);
  font-family:var(--mono); font-size:11px; color:var(--gold-dim);
  width:22px; height:22px; border:1px solid var(--line-dark); border-radius:50%;
  display:flex; align-items:center; justify-content:center; background:var(--ink);
}
.process .step h4{ color:var(--white); font-size:15px; font-family:var(--body); font-weight:700; }
.process .step p{ color:#A7A192; font-size:12.5px; margin-top:6px; line-height:1.4; }
@media (max-width:900px){
  .process{ flex-direction:column; gap:44px; }
  .process .step{ flex-basis:auto; }
  .process::before{ display:none; }
}

/* ---------- quote / cta banner ---------- */
.cta-band{
  background:var(--gold); color:var(--ink); padding:64px 0; text-align:center;
}
.cta-band h2{ font-size:clamp(24px,3vw,34px); }
.cta-band p{ margin-top:12px; font-size:15.5px; color:#3B3111; }
.cta-band .actions{ margin-top:28px; display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }
.cta-band .btn-gold{ background:var(--ink); color:var(--white); }
.cta-band .btn-gold:hover{ background:#000; }
.cta-band .btn-ghost-dark{ border-color:rgba(20,17,13,0.4); color:var(--ink); }
.cta-band .btn-ghost-dark:hover{ border-color:var(--ink); color:#000; }

/* ---------- footer ---------- */
footer.site{ background:var(--ink); color:#B9B3A4; padding:72px 0 28px; border-top:1px solid var(--line-dark); }
.foot-grid{ display:flex; flex-wrap:wrap; gap:40px; padding-bottom:48px; border-bottom:1px solid var(--line-dark); }
.foot-grid > div{ flex:1 1 190px; }
.foot-grid > .foot-brand{ flex:1.6 1 240px; }
.foot-grid h4{ color:var(--white); font-family:var(--body); font-size:13px; letter-spacing:0.1em; text-transform:uppercase; margin-bottom:18px; }
.foot-grid p, .foot-grid a{ font-size:14px; line-height:2; color:#B9B3A4; }
.foot-grid a:hover{ color:var(--gold-light); }
.social-row{ display:flex; gap:10px; margin-top:16px; }
.social-row a{
  width:36px; height:36px; border-radius:50%; border:1px solid var(--line-dark);
  display:flex; align-items:center; justify-content:center; transition:border-color .18s ease, background .18s ease;
}
.social-row svg{ width:16px; height:16px; }
.social-row a:hover{ border-color:var(--gold); background:rgba(201,162,39,0.12); }
.foot-brand img{ height:40px; margin-bottom:16px; }
.foot-brand p{ font-family:var(--display); font-style:italic; color:var(--gold-light); font-size:14.5px; }
.foot-bottom{ padding-top:24px; display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px; }
.foot-bottom p{ font-family:var(--mono); font-size:11px; color:#736D60; }
@media (max-width:800px){ .foot-grid > div{ flex-basis:calc(50% - 20px); } }
@media (max-width:520px){ .foot-grid > div{ flex-basis:100%; } }

/* ---------- page header (inner pages) ---------- */
.page-head{ background:var(--ink); color:var(--white); padding:64px 0 56px; position:relative; overflow:hidden; }
.page-head h1{ color:var(--white); font-size:clamp(32px,4.2vw,50px); margin-top:14px; }
.page-head p{ color:#C7C1B3; margin-top:14px; max-width:600px; font-size:15.5px; line-height:1.6; }
.breadcrumb{ font-family:var(--mono); font-size:11.5px; color:var(--ash); letter-spacing:0.06em; margin-bottom:8px; }
.breadcrumb a:hover{ color:var(--gold-light); }

/* ---------- forms ---------- */
.form-field{ margin-bottom:20px; }
.form-field label{ display:block; font-size:13px; font-weight:700; margin-bottom:8px; color:var(--ink); }
.form-field input, .form-field select, .form-field textarea{
  width:100%; padding:13px 14px; border:1px solid var(--line); border-radius:var(--radius);
  font-family:var(--body); font-size:14.5px; background:var(--white); color:var(--ink);
}
.form-field textarea{ resize:vertical; min-height:120px; }
.form-field input:focus, .form-field select:focus, .form-field textarea:focus{ border-color:var(--gold-dim); }
.form-row{ display:flex; flex-wrap:wrap; gap:20px; }
.form-row > *{ flex:1 1 calc(50% - 10px); }
@media (max-width:600px){ .form-row > *{ flex-basis:100%; } }
.form-note{ font-size:12.5px; color:var(--ash); margin-top:14px; }
.form-success{
  display:none; background:#F0E9D2; border:1px solid var(--gold-dim); padding:16px 18px; border-radius:var(--radius);
  font-size:14px; margin-bottom:20px; align-items:center; gap:10px;
}
.form-success svg{ width:18px; height:18px; flex:none; }
.form-success.show{ display:flex; }

/* ---------- misc ---------- */
.tag-pill{
  display:inline-flex; align-items:center; gap:8px; font-family:var(--mono); font-size:11.5px;
  letter-spacing:0.05em; color:var(--ash-dark); background:var(--paper-alt); border:1px solid var(--line);
  padding:8px 14px; border-radius:20px;
}
.tag-pill::before{ content:""; width:6px; height:6px; border-radius:50%; background:var(--gold); }

.gallery-plate{
  position:relative; aspect-ratio:4/3; border:1px solid var(--line); background:var(--paper-alt);
  display:flex; align-items:center; justify-content:center; overflow:hidden;
}
.gallery-plate .plate-label{
  position:absolute; bottom:14px; left:14px; font-family:var(--mono); font-size:10.5px;
  color:var(--ash); letter-spacing:0.05em;
}
.gallery-plate svg{ width:38%; opacity:0.5; }

/* real photo gallery */
.photo-grid{ display:flex; flex-wrap:wrap; gap:22px; }
.photo-grid > *{ flex:0 1 calc(33.333% - 15px); }
@media (max-width:900px){ .photo-grid > *{ flex-basis:calc(50% - 11px); } }
@media (max-width:600px){ .photo-grid > *{ flex-basis:100%; } }
.photo-card{ border:1px solid var(--line); background:var(--white); overflow:hidden; }
.photo-card .ph{ aspect-ratio:4/3; overflow:hidden; background:var(--paper-alt); }
.photo-card .ph img{ width:100%; height:100%; object-fit:cover; display:block; transition:transform .35s ease; }
.photo-card:hover .ph img{ transform:scale(1.05); }
.photo-card .cap{ padding:14px 16px; }
.photo-card .cap p{ font-size:13px; color:var(--ash-dark); line-height:1.4; }
.gallery-group{ margin-bottom:64px; }
.gallery-group:last-child{ margin-bottom:0; }
.gallery-group-head{ display:flex; align-items:baseline; gap:14px; margin-bottom:24px; }
.gallery-group-head h3{ font-family:var(--display); font-size:21px; }
.gallery-group-head .cnt{ font-family:var(--mono); font-size:11px; color:var(--ash); }

.team-card{ text-align:left; }
.team-card .photo{ width:100%; aspect-ratio:1; border-radius:50%; overflow:hidden; margin-bottom:18px; width:120px; height:120px; }
.team-card .photo img{ width:100%; height:100%; object-fit:cover; }
.team-card h3{ font-size:17px; }
.team-card .role{ font-family:var(--mono); font-size:11.5px; color:var(--gold-dim); letter-spacing:0.05em; text-transform:uppercase; margin-top:4px; }

.map-frame{ border:1px solid var(--line); filter:grayscale(0.15); width:100%; height:100%; min-height:320px; }

.split{ display:flex; flex-wrap:wrap; gap:56px; align-items:center; }
.split > *{ flex:1 1 calc(50% - 28px); }
@media (max-width:900px){ .split{ gap:36px; } .split > *{ flex-basis:100%; } }

.fade-up{ /* reveal-on-scroll removed for reliability; content is always visible */ }