/* ═══════════════════════════════════════════════════
   PFI Aero Rectification — Shared Stylesheet
   Précision Française de l'Industrie
   ═══════════════════════════════════════════════════ */

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

:root {
  --navy:   #07090F;
  --navy2:  #0C101A;
  --navy3:  #111826;
  --white:  #F4F2EE;
  --pale:   #FAFAF8;
  --red:    #C8102E;
  --red2:   #A50D25;
  --steel:  #7A8698;
  --light:  #B8C4D4;
  --border: rgba(255,255,255,.07);
  --borderl:rgba(0,0,0,.10);
}

html { scroll-behavior: smooth; }
body { font-family:'Inter',sans-serif; background:var(--navy); color:var(--white); overflow-x:hidden; }
::-webkit-scrollbar { width:3px; }
::-webkit-scrollbar-thumb { background:var(--red); }

/* ── NAV ── */
nav {
  position:fixed; top:0; left:0; right:0; z-index:100;
  height:112px; display:flex; align-items:center; justify-content:space-between;
  padding:0 5vw;
  background:rgba(7,9,15,.92); backdrop-filter:blur(24px);
  border-bottom:1px solid var(--border);
  transition:height .3s;
}
nav.scrolled { height:80px; }
.nav-logo img { height:106px; transition:height .3s; }
nav.scrolled .nav-logo img { height:82px; }
.nav-links { display:flex; gap:1.8rem; list-style:none; align-items:center; }
.nav-links a {
  font-size:.7rem; font-weight:500; letter-spacing:.13em; text-transform:uppercase;
  color:var(--light); text-decoration:none; transition:color .2s;
  position:relative; padding-bottom:3px; white-space:nowrap;
}
.nav-links a::after {
  content:''; position:absolute; bottom:0; left:0; width:0; height:1px;
  background:var(--red); transition:width .25s;
}
.nav-links a:hover { color:#fff; }
.nav-links a:hover::after { width:100%; }
.nav-links a.active { color:#fff; }
.nav-links a.active::after { width:100%; }

/* Dropdown */
.nav-dropdown { position:relative; }
.nav-dropdown > a { cursor:pointer; }
.nav-dropdown::after {
  content:'';
  display:none;
  position:absolute;
  top:100%;
  left:50%;
  width:260px;
  height:16px;
  transform:translateX(-50%);
}
.nav-dropdown-menu {
  position:absolute; top:calc(100% + 12px); left:50%; transform:translateX(-50%) translateY(6px);
  background:rgba(7,9,15,.98); backdrop-filter:blur(24px);
  border:1px solid var(--border); min-width:240px;
  opacity:0; pointer-events:none;
  transition:opacity .2s, transform .2s;
  z-index:200;
}
.nav-dropdown:hover::after,
.nav-dropdown:focus-within::after { display:block; }
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu { opacity:1; pointer-events:all; transform:translateX(-50%) translateY(0); }
.nav-dropdown-menu a {
  display:block; padding:.7rem 1.4rem;
  font-size:.68rem; font-weight:500; letter-spacing:.12em; text-transform:uppercase;
  color:var(--light); text-decoration:none;
  border-bottom:1px solid var(--border);
  transition:color .2s, background .2s, padding-left .2s;
}
.nav-dropdown-menu a:last-child { border-bottom:none; }
.nav-dropdown-menu a:hover { color:#fff; background:rgba(200,16,46,.08); padding-left:1.8rem; }
.nav-dropdown-menu a::after { display:none; }

.nav-cta {
  font-size:.7rem; font-weight:600; letter-spacing:.1em; text-transform:uppercase;
  color:#fff; background:var(--red); border:none; padding:.6rem 1.6rem;
  text-decoration:none; transition:background .2s; cursor:pointer; white-space:nowrap;
}
.nav-cta:hover { background:var(--red2); }

/* Hamburger */
.nav-burger {
  display:none; flex-direction:column; gap:5px; background:none; border:none;
  cursor:pointer; padding:4px;
}
.nav-burger span { display:block; width:26px; height:1.5px; background:var(--light); transition:all .3s; }
.nav-burger.open span:nth-child(1) { transform:translateY(6.5px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity:0; }
.nav-burger.open span:nth-child(3) { transform:translateY(-6.5px) rotate(-45deg); }

/* Mobile nav */
.nav-mobile {
  position:fixed; top:0; left:0; right:0; bottom:0; z-index:99;
  background:rgba(7,9,15,.98); backdrop-filter:blur(24px);
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:2rem; opacity:0; pointer-events:none; transition:opacity .3s;
}
.nav-mobile.open { opacity:1; pointer-events:all; }
.nav-mobile a {
  font-family:'Barlow Condensed',sans-serif;
  font-size:2.2rem; font-weight:700; letter-spacing:.06em; text-transform:uppercase;
  color:var(--light); text-decoration:none; transition:color .2s;
}
.nav-mobile a:hover { color:var(--red); }
.nav-mobile .mobile-cta {
  margin-top:1rem; font-size:1rem; color:#fff; background:var(--red);
  padding:.8rem 2.5rem;
}

/* ── PAGE HERO (inner pages) ── */
.page-hero {
  padding:180px 5vw 7rem;
  background:var(--navy);
  position:relative; overflow:hidden;
  border-bottom:1px solid var(--border);
}
.page-hero::before {
  content:''; position:absolute; inset:0;
  background:linear-gradient(135deg, rgba(200,16,46,.06) 0%, transparent 55%);
  pointer-events:none;
}
.page-hero-bg {
  position:absolute; inset:0;
  background-size:cover; background-position:center;
  filter:brightness(.2) saturate(.6);
}
.page-hero-content { position:relative; z-index:2; max-width:760px; }
.page-hero-eyebrow {
  font-size:.65rem; font-weight:600; letter-spacing:.22em; text-transform:uppercase;
  color:var(--red); display:flex; align-items:center; gap:.8rem; margin-bottom:1.2rem;
}
.page-hero-eyebrow::before { content:''; display:block; width:24px; height:1px; background:var(--red); }
.page-hero h1 {
  font-family:'Barlow Condensed',sans-serif;
  font-size:clamp(2.8rem,5.5vw,5rem);
  font-weight:700; color:#fff; line-height:.98; letter-spacing:-.01em;
  margin-bottom:1.4rem;
}
.page-hero h1 em { color:var(--red); font-style:normal; }
.page-hero p {
  font-size:.95rem; font-weight:300; line-height:1.9; color:var(--light); max-width:560px;
}

/* ── BREADCRUMB ── */
.breadcrumb {
  display:flex; gap:.5rem; align-items:center;
  font-size:.62rem; letter-spacing:.15em; text-transform:uppercase;
  color:var(--steel); margin-bottom:2.2rem;
}
.breadcrumb a { color:var(--steel); text-decoration:none; transition:color .2s; }
.breadcrumb a:hover { color:var(--red); }
.breadcrumb-sep { color:rgba(255,255,255,.2); }
.breadcrumb-current { color:var(--red); }

/* ── COMMONS ── */
.tag {
  font-size:.65rem; font-weight:600; letter-spacing:.22em; text-transform:uppercase;
  color:var(--red); display:block; margin-bottom:.9rem;
}
.title {
  font-family:'Barlow Condensed',sans-serif;
  font-size:clamp(2rem,4vw,3.2rem); font-weight:700; line-height:1.06;
}
.divline { width:40px; height:2px; background:var(--red); margin:1.4rem 0; }
section { padding:7rem 5vw; }

/* ── BUTTONS ── */
.btn-red {
  font-size:.75rem; font-weight:600; letter-spacing:.12em; text-transform:uppercase;
  color:#fff; background:var(--red); padding:.85rem 2rem;
  text-decoration:none; transition:background .2s; display:inline-block;
}
.btn-red:hover { background:var(--red2); }
.btn-outline {
  font-size:.75rem; font-weight:500; letter-spacing:.1em; text-transform:uppercase;
  color:var(--light); border:1px solid rgba(255,255,255,.28); padding:.85rem 2rem;
  text-decoration:none; transition:all .2s; display:inline-block;
}
.btn-outline:hover { color:#fff; border-color:#fff; }

/* ── CHIFFRES ── */
.chiffres {
  display:grid; grid-template-columns:repeat(4,1fr);
  background:var(--red);
}
.chiffre {
  text-align:center; padding:1.6rem 1rem;
  border-right:1px solid rgba(255,255,255,.18);
}
.chiffre:last-child { border-right:none; }
.chiffre-val {
  font-family:'Barlow Condensed',sans-serif;
  font-size:2.2rem; font-weight:700; color:#fff; display:block; line-height:1;
}
.chiffre-label {
  font-size:.65rem; font-weight:400; letter-spacing:.14em; text-transform:uppercase;
  color:rgba(255,255,255,.75); display:block; margin-top:.3rem;
}

/* ── ABOUT ── */
#about { background:var(--navy2); }
.about-wrap {
  display:grid; grid-template-columns:1fr 1fr;
  gap:6rem; align-items:center; max-width:1200px; margin:0 auto;
}
.about-text .title { color:var(--white); }
.about-body {
  font-size:.92rem; font-weight:300; line-height:1.95; color:var(--light); margin-top:1.2rem;
}
.about-body strong { color:#fff; font-weight:500; }
.about-tags { display:flex; flex-wrap:wrap; gap:.5rem; margin-top:2.2rem; }
.about-tag {
  font-size:.68rem; font-weight:500; letter-spacing:.1em; text-transform:uppercase;
  color:var(--light); border:1px solid var(--border); padding:.38rem .9rem;
  transition:all .2s;
}
.about-tag:hover { border-color:var(--red); color:#fff; }
.about-img { position:relative; overflow:hidden; }
.about-img img { width:100%; display:block; aspect-ratio:4/5; object-fit:cover; }
.about-img-accent {
  position:absolute; top:-12px; right:-12px; bottom:12px; left:12px;
  border:1px solid var(--red); z-index:-1; pointer-events:none;
}

/* ── EXPERTISE GRID ── */
.exp-grid {
  display:grid; grid-template-columns:repeat(2,1fr);
  gap:2px; margin-top:3.5rem;
}
.exp-card {
  position:relative; overflow:hidden; aspect-ratio:16/9;
  background:var(--navy);
}
.exp-card img {
  width:100%; height:100%; object-fit:cover;
  filter:brightness(.45) saturate(.7);
  transition:filter .5s, transform .6s;
}
.exp-card:hover img { filter:brightness(.3) saturate(.6); transform:scale(1.05); }
.exp-inner {
  position:absolute; inset:0; padding:2.8rem;
  display:flex; flex-direction:column; justify-content:flex-end;
}
.exp-n {
  position:absolute; top:2rem; left:2.8rem;
  font-family:'Barlow Condensed',sans-serif;
  font-size:5rem; font-weight:800; color:rgba(255,255,255,.05); line-height:1;
}
.exp-bar { width:30px; height:2px; background:var(--red); margin-bottom:.8rem; }
.exp-card h3 {
  font-family:'Barlow Condensed',sans-serif;
  font-size:1.7rem; font-weight:700; color:#fff; letter-spacing:.02em; margin-bottom:.5rem;
}
.exp-card p { font-size:.8rem; font-weight:300; line-height:1.75; color:var(--light); max-width:380px; }

/* ── ATELIER ── */
.atelier-grid {
  display:grid;
  grid-template-columns: 2fr 1fr 1fr;
  grid-template-rows: auto auto;
  gap:3px;
}
.atelier-cell { overflow:hidden; position:relative; background:var(--navy); cursor:zoom-in; }
.atelier-cell img { width:100%; height:100%; object-fit:contain; display:block; transition:transform .5s; }
.atelier-cell:hover img { transform:scale(1.03); }
.atelier-cell.main { grid-row:span 2; aspect-ratio:unset; min-height:460px; }
.atelier-cell.sm { aspect-ratio:4/3; }

/* ── SECTEURS ── */
.secteurs-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:1.5rem; }
.secteur {
  position:relative; overflow:hidden; aspect-ratio:3/4; cursor:zoom-in;
  background:var(--navy2);
}
.secteur img {
  width:100%; height:100%; object-fit:contain;
  filter:brightness(.55) saturate(.65);
  transition:all .5s;
}
.secteur:hover img { filter:brightness(.35) saturate(.5); transform:scale(1.04); }
.secteur-overlay {
  position:absolute; inset:0;
  background:linear-gradient(to top, rgba(7,9,15,.95) 0%, transparent 55%);
  padding:2rem 1.8rem;
  display:flex; flex-direction:column; justify-content:flex-end;
}
.secteur-badge {
  position:absolute; top:1.4rem; left:1.8rem;
  font-size:.58rem; font-weight:700; letter-spacing:.18em; text-transform:uppercase;
  color:#fff; background:var(--red); padding:.28rem .7rem;
}
.secteur h3 {
  font-family:'Barlow Condensed',sans-serif;
  font-size:1.4rem; font-weight:700; color:#fff; letter-spacing:.03em; margin-bottom:.5rem;
}
.secteur p {
  font-size:.74rem; font-weight:300; color:var(--light); line-height:1.6;
  opacity:0; transform:translateY(6px); transition:all .35s;
}
.secteur:hover p { opacity:1; transform:translateY(0); }

/* ── GALLERY ── */
.gallery {
  display:grid;
  grid-template-columns:repeat(5,1fr);
  grid-auto-rows:220px;
  gap:3px;
}
.g-item { position:relative; overflow:hidden; background:var(--navy); cursor:zoom-in; }
.g-item.t2 { grid-row:span 2; }
.g-item.c2 { grid-column:span 2; }
.g-item img {
  width:100%; height:100%; object-fit:contain; display:block;
  filter:brightness(.92) saturate(.88);
  transition:all .4s;
}
.g-item:hover img { filter:brightness(1.08) saturate(1); transform:scale(1.04); }
.g-item-ov {
  position:absolute; inset:0;
  background:rgba(200,16,46,0); transition:background .3s;
}
.g-item:hover .g-item-ov { background:rgba(200,16,46,.10); }

/* ── VALEURS ── */
.val-grid {
  display:grid; grid-template-columns:repeat(4,1fr);
  gap:2.5rem; margin-top:3.5rem;
}
.val-item { border-top:2px solid var(--borderl); padding-top:1.8rem; }
.val-num {
  font-family:'Barlow Condensed',sans-serif;
  font-size:3.5rem; font-weight:800; color:rgba(0,0,0,.06); line-height:1;
}
.val-item h3 {
  font-family:'Barlow Condensed',sans-serif;
  font-size:1.3rem; font-weight:700; color:var(--navy); letter-spacing:.02em; margin:.2rem 0 .6rem;
}
.val-item h3 em { color:var(--red); font-style:normal; }
.val-item p { font-size:.82rem; font-weight:300; line-height:1.85; color:#4a5568; }

/* ── REFERENCES ── */
.refs-grid { display:grid; grid-template-columns:repeat(6,1fr); gap:1px; }
.ref-card {
  background:var(--navy2); padding:2.8rem 1rem;
  display:flex; flex-direction:column; align-items:center; gap:.7rem;
  border:1px solid var(--border); text-align:center;
  transition:border-color .2s, background .2s;
}
.ref-card:hover { border-color:var(--red); background:rgba(200,16,46,.07); }
.ref-name {
  font-family:'Barlow Condensed',sans-serif;
  font-size:1.4rem; font-weight:800; letter-spacing:.06em;
  text-transform:uppercase; color:var(--white);
}
.ref-sector { font-size:.62rem; font-weight:400; letter-spacing:.15em; text-transform:uppercase; color:var(--steel); }

/* ── MISSION BANNER ── */
#mission {
  position:relative; background:var(--red); padding:7rem 5vw; overflow:hidden;
}
.mission-bg {
  position:absolute; inset:0; opacity:.04;
  font-family:'Barlow Condensed',sans-serif; font-size:22rem; font-weight:800;
  color:#fff; display:flex; align-items:center; justify-content:center;
  letter-spacing:-.1em; user-select:none; pointer-events:none;
}
.mission-inner { max-width:900px; margin:0 auto; text-align:center; position:relative; }
.mission-inner .tag { color:rgba(255,255,255,.65); }
.mission-inner .title { color:#fff; font-size:clamp(2.4rem,5.5vw,4.5rem); }
.mission-inner p {
  font-size:1.02rem; font-weight:300; line-height:1.9; color:rgba(255,255,255,.85);
  margin-top:1.8rem; max-width:680px; margin-left:auto; margin-right:auto;
}
.mission-inner a {
  display:inline-block; margin-top:2.8rem;
  font-size:.75rem; font-weight:600; letter-spacing:.12em; text-transform:uppercase;
  color:#fff; border:1px solid rgba(255,255,255,.5); padding:.9rem 2.2rem;
  text-decoration:none; transition:all .2s;
}
.mission-inner a:hover { background:rgba(255,255,255,.12); border-color:#fff; }

/* ── CONTACT ── */
.cinfo {
  padding:1.2rem 0; border-bottom:1px solid var(--border);
}
.cinfo-text { font-size:.84rem; color:var(--light); line-height:1.5; }
.cinfo-text strong { display:block; font-size:.68rem; font-weight:600; letter-spacing:.14em;
  text-transform:uppercase; color:#fff; margin-bottom:.15rem; }

/* ── FOOTER ── */
footer {
  background:#050710; padding:3.5rem 5vw;
  border-top:1px solid var(--border);
}
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:3rem; }
.footer-brand img { height:90px; }
.footer-brand p { font-size:.78rem; font-weight:300; line-height:1.8; color:var(--steel); margin-top:1rem; max-width:250px; }
.footer-col h4 {
  font-size:.64rem; font-weight:600; letter-spacing:.2em; text-transform:uppercase;
  color:#fff; margin-bottom:1.2rem;
}
.footer-col ul { list-style:none; display:flex; flex-direction:column; gap:.6rem; }
.footer-col a { font-size:.78rem; font-weight:300; color:var(--steel); text-decoration:none; transition:color .2s; }
.footer-col a:hover { color:#fff; }
.footer-bottom {
  margin-top:2.5rem; padding-top:1.5rem; border-top:1px solid var(--border);
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:.8rem;
}
.footer-copy { font-size:.7rem; color:var(--steel); }
.footer-legal { display:flex; gap:1.5rem; }
.footer-credit { font-size:.7rem; color:var(--steel); }
.footer-legal a { font-size:.7rem; color:var(--steel); text-decoration:none; transition:color .2s; }
.footer-legal a:hover { color:#fff; }

/* ── CHAT WIDGET ── */
.chat-btn {
  position:fixed; bottom:2rem; right:2rem; z-index:8000;
  width:48px; height:48px; background:var(--red); border:none;
  cursor:pointer; display:flex; align-items:center; justify-content:center;
  box-shadow:0 2px 12px rgba(0,0,0,.35); transition:background .2s, transform .2s;
}
.chat-btn:hover { background:var(--red2); transform:scale(1.06); }
.chat-btn svg { display:none; }
.chat-btn::before { content:'PFI'; font-family:'Barlow Condensed',sans-serif; font-size:.9rem; font-weight:700; letter-spacing:.1em; color:#fff; }
.chat-btn .chat-notif {
  position:absolute; top:2px; right:2px; width:14px; height:14px;
  background:#fff; border:2px solid var(--red);
  display:flex; align-items:center; justify-content:center;
  font-size:.5rem; font-weight:700; color:var(--red); line-height:1;
}
.chat-panel {
  position:fixed; bottom:6rem; right:2rem; z-index:8000;
  width:340px; max-height:480px;
  background:var(--navy2); border:1px solid var(--border);
  box-shadow:0 8px 40px rgba(0,0,0,.6);
  display:flex; flex-direction:column;
  transform:translateY(20px) scale(.95); opacity:0;
  pointer-events:none; transition:all .25s ease;
}
.chat-panel.visible { transform:translateY(0) scale(1); opacity:1; pointer-events:all; }
.chat-header {
  background:var(--navy3); border-bottom:1px solid var(--border);
  padding:1rem 1.2rem;
  display:flex; align-items:center; justify-content:space-between;
}
.chat-header-left { display:flex; align-items:center; gap:.75rem; }
.chat-avatar {
  width:34px; height:34px; background:var(--red); flex-shrink:0;
  display:flex; align-items:center; justify-content:center;
}
.chat-avatar svg { display:none; }
.chat-avatar::before { content:'PFI'; font-family:'Barlow Condensed',sans-serif; font-size:.65rem; font-weight:700; letter-spacing:.06em; color:#fff; }
.chat-hname { font-size:.8rem; font-weight:600; color:#fff; letter-spacing:.02em; }
.chat-hstatus { font-size:.6rem; color:var(--steel); display:flex; align-items:center; gap:.3rem; letter-spacing:.05em; }
.chat-hstatus::before { content:''; width:5px; height:5px; background:#4ade80; border-radius:50%; display:inline-block; }
.chat-hclose { background:none; border:none; color:var(--steel); font-size:1.1rem; cursor:pointer; padding:0; line-height:1; transition:color .2s; }
.chat-hclose:hover { color:#fff; }
.chat-messages {
  flex:1; overflow-y:auto; padding:1rem;
  display:flex; flex-direction:column; gap:.75rem; scroll-behavior:smooth;
}
.chat-messages::-webkit-scrollbar { width:2px; }
.chat-messages::-webkit-scrollbar-thumb { background:var(--red); }
.chat-msg { max-width:85%; }
.chat-msg.bot { align-self:flex-start; }
.chat-msg.user { align-self:flex-end; }
.chat-bubble {
  padding:.65rem 1rem; font-size:.78rem; font-weight:300; line-height:1.65;
}
.chat-msg.bot .chat-bubble { background:var(--navy3); color:var(--light); border-left:2px solid var(--red); }
.chat-msg.user .chat-bubble { background:var(--red); color:#fff; }
.chat-time { font-size:.58rem; color:var(--steel); margin-top:.25rem; letter-spacing:.05em; }
.chat-msg.user .chat-time { text-align:right; }
.chat-quick { display:flex; flex-wrap:wrap; gap:.4rem; padding:0 1rem .8rem; }
.chat-q {
  font-size:.65rem; font-weight:500; letter-spacing:.06em; text-transform:uppercase;
  color:var(--light); border:1px solid var(--border);
  padding:.32rem .75rem; cursor:pointer; background:none; transition:all .2s; text-align:left;
}
.chat-q:hover { border-color:var(--red); color:#fff; }
.chat-input-row {
  display:flex; gap:.5rem; padding:.75rem 1rem; border-top:1px solid var(--border);
}
.chat-input {
  flex:1; background:rgba(255,255,255,.04); border:1px solid var(--border);
  color:var(--white); font-family:'Inter',sans-serif; font-size:.78rem;
  padding:.55rem .8rem; outline:none; transition:border-color .2s;
}
.chat-input::placeholder { color:var(--steel); }
.chat-input:focus { border-color:var(--red); }
.chat-send {
  background:var(--red); border:none; color:#fff; cursor:pointer;
  padding:.55rem .9rem; font-size:.85rem; transition:background .2s;
}
.chat-send:hover { background:var(--red2); }

/* ── LIGHTBOX ── */
.lb-overlay {
  display:none; position:fixed; inset:0; z-index:9000;
  background:rgba(5,7,16,.97); cursor:zoom-out;
  align-items:center; justify-content:center;
  animation:lbFadeIn .2s ease;
}
.lb-overlay.open { display:flex; }
@keyframes lbFadeIn { from{opacity:0} to{opacity:1} }
.lb-overlay img {
  max-width:90vw; max-height:88vh; object-fit:contain;
  box-shadow:0 0 80px rgba(0,0,0,.9); cursor:default;
  animation:lbZoomIn .22s ease;
}
@keyframes lbZoomIn { from{transform:scale(.92);opacity:0} to{transform:scale(1);opacity:1} }
.lb-close {
  position:fixed; top:1.4rem; right:2rem; z-index:9001;
  background:none; border:none; color:#fff; font-size:2rem;
  cursor:pointer; opacity:.75; transition:opacity .2s; line-height:1;
}
.lb-close:hover { opacity:1; }
.lb-caption {
  position:fixed; bottom:1.8rem; left:50%; transform:translateX(-50%);
  font-size:.72rem; letter-spacing:.15em; text-transform:uppercase;
  color:rgba(255,255,255,.55); pointer-events:none;
}

/* ── ANIMATIONS ── */
.rv { opacity:0; transform:translateY(28px); transition:opacity .65s ease, transform .65s ease; }
.rv.on { opacity:1; transform:none; }
.rv.d1 { transition-delay:.1s; }
.rv.d2 { transition-delay:.2s; }
.rv.d3 { transition-delay:.3s; }
.rv.d4 { transition-delay:.4s; }

/* ── PAGE CARDS (homepage nav grid) ── */
.pages-section { background:var(--navy3); }
.pages-section .section-head { max-width:600px; margin-bottom:3.5rem; }
.pages-grid {
  display:grid; grid-template-columns:repeat(4,1fr);
  gap:1px;
}
.page-card {
  background:var(--navy2); padding:2.8rem 2rem;
  border:1px solid var(--border); transition:border-color .3s, background .3s;
  text-decoration:none; display:block; position:relative; overflow:hidden;
}
.page-card::before {
  content:''; position:absolute; bottom:0; left:0; right:0; height:2px;
  background:var(--red); transform:scaleX(0); transition:transform .3s; transform-origin:left;
}
.page-card:hover { border-color:rgba(200,16,46,.4); background:rgba(200,16,46,.04); }
.page-card:hover::before { transform:scaleX(1); }
.page-card-num {
  font-family:'Barlow Condensed',sans-serif;
  font-size:3.5rem; font-weight:800;
  color:rgba(255,255,255,.04); line-height:1; margin-bottom:.4rem;
}
.page-card-icon { font-size:1.4rem; margin-bottom:1rem; opacity:.6; }
.page-card-title {
  font-family:'Barlow Condensed',sans-serif;
  font-size:1.35rem; font-weight:700; color:#fff; letter-spacing:.03em; margin-bottom:.55rem;
}
.page-card-desc { font-size:.76rem; font-weight:300; line-height:1.7; color:var(--light); }
.page-card-arrow {
  display:inline-flex; align-items:center; gap:.4rem; margin-top:1.4rem;
  font-size:.62rem; font-weight:600; letter-spacing:.16em; text-transform:uppercase;
  color:var(--red);
}

/* ── PROCESS STEPS ── */
.process-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:0; }
.process-step {
  padding:2.5rem 2rem; border-right:1px solid var(--border); position:relative;
}
.process-step:last-child { border-right:none; }
.process-step::before {
  content:''; position:absolute; top:0; left:0; right:0; height:2px;
  background:var(--border);
}
.process-step.active::before { background:var(--red); }
.process-num {
  font-family:'Barlow Condensed',sans-serif;
  font-size:2.8rem; font-weight:800; color:rgba(255,255,255,.06); line-height:1; margin-bottom:.6rem;
}
.process-step h3 {
  font-family:'Barlow Condensed',sans-serif;
  font-size:1.15rem; font-weight:700; color:#fff; letter-spacing:.03em; margin-bottom:.5rem;
}
.process-step p { font-size:.78rem; font-weight:300; line-height:1.75; color:var(--light); }

/* ── EXPERTISE DETAIL ── */
.exp-detail {
  padding:5rem 5vw; border-bottom:1px solid var(--border);
  display:grid; grid-template-columns:1fr 1fr; gap:5rem; align-items:center;
}
.exp-detail:nth-child(even) .exp-detail-img { order:-1; }
.exp-detail-img img { width:100%; display:block; object-fit:cover; }
.exp-detail-content .tag { color:var(--red); }
.exp-detail h3 {
  font-family:'Barlow Condensed',sans-serif;
  font-size:clamp(1.8rem,3vw,2.5rem); font-weight:700; color:#fff; margin-bottom:1rem;
}
.exp-detail p { font-size:.88rem; font-weight:300; line-height:1.9; color:var(--light); margin-bottom:.8rem; }
.exp-bullets { list-style:none; margin-top:1.5rem; display:flex; flex-direction:column; gap:.6rem; }
.exp-bullets li {
  font-size:.82rem; font-weight:300; color:var(--light); padding-left:1.2rem; position:relative;
}
.exp-bullets li::before { content:'—'; position:absolute; left:0; color:var(--red); }

/* ── SECTOR DETAIL ── */
.sector-detail-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:2px; }
.sector-card {
  position:relative; overflow:hidden; background:var(--navy2);
  min-height:420px;
}
.sector-card img {
  width:100%; height:100%; object-fit:cover; display:block;
  filter:brightness(.35) saturate(.6);
  transition:filter .5s, transform .6s;
}
.sector-card:hover img { filter:brightness(.2) saturate(.5); transform:scale(1.04); }
.sector-card-inner {
  position:absolute; inset:0; padding:3rem;
  display:flex; flex-direction:column; justify-content:flex-end;
  background:linear-gradient(to top, rgba(7,9,15,.95) 0%, rgba(7,9,15,.3) 50%, transparent 100%);
}
.sector-card-badge {
  font-size:.58rem; font-weight:700; letter-spacing:.18em; text-transform:uppercase;
  color:#fff; background:var(--red); padding:.28rem .7rem; display:inline-block;
  margin-bottom:1rem; align-self:flex-start;
}
.sector-card h3 {
  font-family:'Barlow Condensed',sans-serif;
  font-size:2rem; font-weight:700; color:#fff; margin-bottom:.8rem;
}
.sector-card p { font-size:.82rem; font-weight:300; line-height:1.8; color:var(--light); max-width:400px; }
.sector-card-features {
  list-style:none; margin-top:1.2rem; display:flex; flex-direction:column; gap:.4rem;
}
.sector-card-features li {
  font-size:.74rem; font-weight:300; color:rgba(255,255,255,.6);
  padding-left:1rem; position:relative;
}
.sector-card-features li::before { content:'›'; position:absolute; left:0; color:var(--red); }

/* ── QUALITY/METHODOLOGIE ── */
.method-timeline { display:flex; flex-direction:column; gap:0; }
.method-step {
  display:grid; grid-template-columns:80px 1fr;
  gap:2rem; padding:2.5rem 0; border-bottom:1px solid var(--border);
  align-items:start;
}
.method-step:last-child { border-bottom:none; }
.method-step-num {
  font-family:'Barlow Condensed',sans-serif;
  font-size:3rem; font-weight:800; color:var(--red); line-height:1;
  opacity:.9;
}
.method-step h3 {
  font-family:'Barlow Condensed',sans-serif;
  font-size:1.4rem; font-weight:700; color:#fff; letter-spacing:.03em; margin-bottom:.6rem;
}
.method-step p { font-size:.84rem; font-weight:300; line-height:1.85; color:var(--light); }

/* ── RESPONSIVE ── */
@media(max-width:1200px) {
  .pages-grid { grid-template-columns:repeat(2,1fr); }
  .process-grid { grid-template-columns:repeat(2,1fr); }
}
@media(max-width:1100px) {
  .secteurs-grid { grid-template-columns:repeat(2,1fr); }
  .refs-grid { grid-template-columns:repeat(3,1fr); }
  .footer-grid { grid-template-columns:1fr 1fr; }
  .gallery { grid-template-columns:repeat(3,1fr); }
  .sector-detail-grid { grid-template-columns:1fr; }
}
@media(max-width:900px) {
  .nav-links, .nav-cta { display:none; }
  .nav-burger { display:flex; }
  .exp-detail { grid-template-columns:1fr; }
  .exp-detail:nth-child(even) .exp-detail-img { order:0; }
}
@media(max-width:768px) {
  .about-wrap, .contact-wrap { grid-template-columns:1fr; gap:3rem; }
  .exp-grid { grid-template-columns:1fr; }
  .val-grid { grid-template-columns:1fr 1fr; }
  .chiffres { grid-template-columns:repeat(2,1fr); }
  .gallery { grid-template-columns:repeat(2,1fr); }
  .g-item.c2 { grid-column:span 1; }
  .secteurs-grid { grid-template-columns:1fr 1fr; }
  .refs-grid { grid-template-columns:repeat(2,1fr); }
  .footer-grid { grid-template-columns:1fr; }
  .atelier-grid { grid-template-columns:1fr; }
  .atelier-cell.main { min-height:300px; }
  .pages-grid { grid-template-columns:1fr; }
  .process-grid { grid-template-columns:1fr; }
  .process-step { border-right:none; border-bottom:1px solid var(--border); }
  .method-step { grid-template-columns:50px 1fr; }
}
@media(max-width:480px) {
  .chat-panel { width:calc(100vw - 2rem); right:1rem; bottom:5.5rem; }
  .chat-btn { right:1rem; bottom:1rem; }
  .val-grid { grid-template-columns:1fr; }
  .refs-grid { grid-template-columns:repeat(2,1fr); }
}