/* ==========================================================================
   G3 Consulting MC — feuille de style
   Bleu #152b42 · Gris #808182
   ========================================================================== */

:root{
  --navy:#152b42;
  --navy-deep:#0d1c2c;
  --navy-soft:#1d3a58;
  --grey:#808182;          /* gris de marque — usages decoratifs */
  --grey-text:#525a63;     /* gris lisible pour le texte */
  --grey-light:#c3c6c9;
  --paper:#fbfaf8;
  --paper-warm:#f1efe9;
  --line:rgba(21,43,66,.16);
  --line-light:rgba(255,255,255,.2);
  --text:#152029;
  --muted:#4e5862;
  --serif:"Cormorant Garamond",Georgia,"Times New Roman",serif;
  --sans:"Jost","Helvetica Neue",Arial,sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
  --pad:clamp(24px,7vw,120px);
}

*,*::before,*::after{box-sizing:border-box}

html{scroll-behavior:smooth}

body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:var(--sans);
  font-weight:400;
  font-size:17px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img{max-width:100%;display:block}
a{color:inherit}

/* grain très léger, donne de la matière au fond ------------------------- */
.grain{
  position:fixed;inset:0;z-index:9999;pointer-events:none;opacity:.035;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3'/></filter><rect width='160' height='160' filter='url(%23n)'/></svg>");
}

/* Typo commune ----------------------------------------------------------- */
h1,h2,h3{font-family:var(--serif);font-weight:500;letter-spacing:-.01em;margin:0}
em{font-style:italic}

.eyebrow{
  font-size:11.5px;letter-spacing:.3em;text-transform:uppercase;
  color:var(--grey-text);font-weight:500;margin:0 0 22px;
}
.eyebrow.light{color:#cfd3d7}

.body{color:var(--muted);line-height:1.8;margin:0}

/* Boutons ---------------------------------------------------------------- */
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:12px;
  padding:16px 34px;border:0;border-radius:40px;
  background:var(--navy);color:#fff;
  font-family:var(--sans);font-size:12.5px;letter-spacing:.18em;text-transform:uppercase;font-weight:500;
  text-decoration:none;cursor:pointer;overflow:hidden;
  transition:transform .45s var(--ease),box-shadow .45s var(--ease);
  box-shadow:0 10px 28px rgba(21,43,66,.16);
}
.btn::after{
  content:"";position:absolute;inset:0;background:linear-gradient(120deg,transparent 20%,rgba(255,255,255,.22),transparent 80%);
  transform:translateX(-120%);transition:transform .8s var(--ease);
}
.btn:hover{transform:translateY(-2px);box-shadow:0 16px 36px rgba(21,43,66,.24)}
.btn:hover::after{transform:translateX(120%)}
.btn[disabled]{opacity:.6;pointer-events:none}

.btn-ghost{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12.5px;letter-spacing:.18em;text-transform:uppercase;font-weight:500;
  color:var(--navy);text-decoration:none;padding:16px 4px;position:relative;
}
.btn-ghost::after{
  content:"";position:absolute;left:4px;right:4px;bottom:12px;height:1px;background:var(--navy);
  transform:scaleX(.35);transform-origin:left;transition:transform .5s var(--ease);
}
.btn-ghost:hover::after{transform:scaleX(1)}

/* Header ----------------------------------------------------------------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px var(--pad);
  transition:background .5s var(--ease),padding .5s var(--ease),box-shadow .5s var(--ease);
}
.site-header.scrolled{
  background:rgba(251,250,248,.88);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  backdrop-filter:saturate(180%) blur(14px);
  padding:10px var(--pad);
  box-shadow:0 1px 0 var(--line);
}
.brand img{height:58px;width:auto;object-fit:contain;transition:height .5s var(--ease)}
.site-header.scrolled .brand img{height:44px}

.site-nav{display:flex;align-items:center;gap:34px}
.site-nav a{
  text-decoration:none;font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--navy);
  font-weight:500;position:relative;padding:6px 0;
}
.site-nav a:not(.nav-cta)::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--navy);
  transform:scaleX(0);transform-origin:right;transition:transform .45s var(--ease);
}
.site-nav a:not(.nav-cta):hover::after{transform:scaleX(1);transform-origin:left}
.nav-cta{
  border:1px solid var(--navy);border-radius:40px;padding:11px 22px !important;
  transition:background .4s var(--ease),color .4s var(--ease);
}
.nav-cta:hover{background:var(--navy);color:#fff}

.lang-switch{
  background:none;border:0;cursor:pointer;font-family:var(--sans);
  font-size:11.5px;font-weight:500;letter-spacing:.12em;color:var(--grey-text);display:flex;gap:4px;padding:6px 0;
}
.lang-switch i{font-style:normal;opacity:.45}
.lang-switch span{transition:color .3s}
.lang-switch span.active{color:var(--navy);font-weight:600}

/* Hero ------------------------------------------------------------------- */
.hero{
  position:relative;min-height:100svh;
  display:grid;grid-template-columns:1.15fr .85fr;align-items:center;
  padding:150px var(--pad) 110px;
  background:
    radial-gradient(1100px 620px at 88% 12%,rgba(21,43,66,.07),transparent 62%),
    radial-gradient(760px 520px at 4% 92%,rgba(128,129,130,.13),transparent 60%),
    linear-gradient(180deg,var(--paper) 0%,var(--paper-warm) 100%);
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;left:var(--pad);top:0;bottom:0;width:1px;
  background:linear-gradient(180deg,transparent,var(--line) 22%,var(--line) 78%,transparent);
}
.hero-inner{max-width:720px;position:relative;z-index:2;padding-left:clamp(18px,3vw,46px)}

h1{
  font-size:clamp(46px,7vw,98px);line-height:1.04;color:var(--navy);
  letter-spacing:-.025em;margin:0 0 34px;font-weight:500;
}
h1 em{color:#5f666c;font-weight:400}

.lead{font-size:clamp(16.5px,1.2vw,19px);line-height:1.8;color:var(--muted);max-width:620px;margin:0 0 44px}

.hero-actions{display:flex;align-items:center;gap:30px;flex-wrap:wrap}

.hero-visual{position:relative;display:grid;place-items:center;z-index:1}
.hero-visual img{
  width:min(78%,430px);opacity:.96;
  filter:drop-shadow(0 30px 60px rgba(21,43,66,.14));
  animation:float 9s ease-in-out infinite;
}
.halo{
  position:absolute;width:min(96%,640px);aspect-ratio:1;border-radius:50%;
  background:radial-gradient(circle at 50% 50%,rgba(255,255,255,.95),rgba(255,255,255,0) 66%);
  box-shadow:inset 0 0 0 1px rgba(21,43,66,.06);
  animation:pulse 11s ease-in-out infinite;
}
@keyframes float{0%,100%{transform:translateY(-9px)}50%{transform:translateY(9px)}}
@keyframes pulse{0%,100%{transform:scale(1);opacity:.9}50%{transform:scale(1.05);opacity:1}}

.scroll-hint{position:absolute;left:50%;bottom:34px;transform:translateX(-50%);width:1px;height:60px;background:var(--line);overflow:hidden}
.scroll-hint span{position:absolute;top:-60px;left:0;width:1px;height:60px;background:var(--navy);animation:scrolldown 2.6s var(--ease) infinite}
@keyframes scrolldown{0%{top:-60px}60%,100%{top:60px}}

/* Expertise (bloc sombre) ------------------------------------------------ */
.expertise{
  background:linear-gradient(160deg,var(--navy) 0%,var(--navy-deep) 100%);
  color:#fff;padding:clamp(80px,11vw,150px) var(--pad);position:relative;overflow:hidden;
}
.expertise::after{
  content:"";position:absolute;top:-30%;right:-12%;width:52vw;height:52vw;border-radius:50%;
  background:radial-gradient(circle,rgba(128,129,130,.20),transparent 65%);pointer-events:none;
}
.section-head{max-width:760px;margin:0 0 clamp(46px,6vw,80px);position:relative;z-index:2}
.section-head h2{font-size:clamp(32px,4.2vw,56px);line-height:1.12;color:#fff}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(16px,2vw,28px);position:relative;z-index:2}
.card{
  border:1px solid var(--line-light);border-radius:20px;padding:clamp(28px,2.6vw,40px);
  background:rgba(255,255,255,.045);
  transition:transform .6s var(--ease),background .6s var(--ease),border-color .6s var(--ease);
}
.card:hover{transform:translateY(-8px);background:rgba(255,255,255,.085);border-color:rgba(255,255,255,.3)}
.card .num{font-family:var(--serif);font-size:16px;font-weight:600;letter-spacing:.22em;color:#c9ccd0}
.card h3{font-size:clamp(24px,2vw,30px);margin:16px 0 14px;color:#fff}
.card p{margin:0;font-size:15.5px;line-height:1.8;color:rgba(255,255,255,.88)}

/* Approche --------------------------------------------------------------- */
.approach{padding:clamp(80px,11vw,150px) var(--pad);background:var(--paper)}
.approach-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(40px,7vw,110px);align-items:start}
.approach-copy h2{font-size:clamp(30px,3.8vw,50px);line-height:1.12;color:var(--navy);margin:0 0 24px}
.approach-copy .body{max-width:520px}

.steps{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.steps li{
  display:grid;grid-template-columns:190px 1fr;gap:24px;align-items:baseline;
  padding:26px 0;border-bottom:1px solid var(--line);
  transition:padding-left .5s var(--ease);
}
.steps li:hover{padding-left:12px}
.steps b{font-family:var(--serif);font-weight:600;font-size:25px;color:var(--navy)}
.steps span{color:var(--muted);font-size:15.5px}

/* Contact ---------------------------------------------------------------- */
.contact{
  padding:clamp(70px,10vw,140px) var(--pad) clamp(80px,10vw,130px);
  background:linear-gradient(180deg,var(--paper-warm),var(--paper));
}
.contact-box{
  max-width:1180px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:28px;
  padding:clamp(30px,4.4vw,68px);
  display:grid;grid-template-columns:.85fr 1.15fr;gap:clamp(36px,5vw,76px);
  box-shadow:0 30px 80px rgba(21,43,66,.08);
}
.contact-copy h2{font-size:clamp(30px,3.6vw,46px);color:var(--navy);margin:0 0 20px;line-height:1.12}
.contact-details{margin-top:38px;border-top:1px solid var(--line);padding-top:28px}
.contact-details p{margin:0 0 10px;font-size:15.5px;color:var(--navy)}
.contact-details a{text-decoration:none;border-bottom:1px solid transparent;transition:border-color .35s}
.contact-details a:hover{border-color:var(--navy)}
.contact-details .cname{font-family:var(--serif);font-size:23px;font-weight:600;margin-bottom:16px}
.contact-details .csite{color:var(--grey-text)}

/* Formulaire ------------------------------------------------------------- */
.contact-form{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-content:start}
.field{position:relative}
.field.full,.full{grid-column:1/-1}

.field input,.field textarea{
  width:100%;background:transparent;border:0;border-bottom:1.5px solid rgba(21,43,66,.22);
  padding:18px 2px 12px;font-family:var(--sans);font-size:16px;font-weight:400;color:var(--text);
  outline:none;border-radius:0;transition:border-color .4s var(--ease);
}
.field textarea{resize:vertical;min-height:120px;line-height:1.7}
.field label{
  position:absolute;left:2px;top:18px;font-size:15.5px;color:var(--grey-text);pointer-events:none;
  transition:all .32s var(--ease);
}
.field input:hover,.field textarea:hover{border-color:rgba(21,43,66,.4)}
.field input:focus,.field textarea:focus{border-color:var(--navy)}
.field input:focus + label,.field textarea:focus + label,
.field input:not(:placeholder-shown) + label,.field textarea:not(:placeholder-shown) + label{
  top:-4px;font-size:11px;font-weight:500;letter-spacing:.18em;text-transform:uppercase;color:var(--navy);
}
.field.invalid input,.field.invalid textarea{border-color:#c0392b}

.consent{display:flex;gap:12px;align-items:flex-start;font-size:13.5px;color:var(--grey-text);line-height:1.65;cursor:pointer;margin-top:4px}
.consent input{margin-top:3px;accent-color:var(--navy);width:15px;height:15px;flex:none}

.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

#submitBtn{margin-top:10px;justify-self:start;padding-inline:44px}
.spinner{
  width:14px;height:14px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;
  display:none;animation:spin .8s linear infinite;
}
.is-sending .spinner{display:block}
@keyframes spin{to{transform:rotate(360deg)}}

.form-status{margin:4px 0 0;font-size:13.5px;min-height:20px}
.form-status.ok{color:#1e7a4d}
.form-status.ko{color:#c0392b}

/* Footer ----------------------------------------------------------------- */
.site-footer{
  padding:26px var(--pad);border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--grey-text);
  background:var(--paper);
}

/* Apparitions au scroll --------------------------------------------------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.visible{opacity:1;transform:none}
.reveal[data-delay="1"]{transition-delay:.12s}
.reveal[data-delay="2"]{transition-delay:.24s}
.reveal[data-delay="3"]{transition-delay:.36s}

/* Responsive -------------------------------------------------------------- */
@media (max-width:1080px){
  .hero{grid-template-columns:1fr;min-height:auto;padding-top:140px;text-align:left}
  .hero-visual{order:-1;margin-bottom:40px}
  .hero-visual img{width:min(60%,300px)}
  .hero::before{display:none}
  .hero-inner{padding-left:0}
  .scroll-hint{display:none}
  .cards{grid-template-columns:1fr}
  .approach-grid{grid-template-columns:1fr}
  .contact-box{grid-template-columns:1fr}
}
@media (max-width:720px){
  .site-nav a:not(.nav-cta){display:none}
  .site-nav{gap:16px}
  .brand img{height:46px}
  .contact-form{grid-template-columns:1fr}
  .steps li{grid-template-columns:1fr;gap:6px}
  .site-footer{flex-direction:column;gap:8px;text-align:center;align-items:center}
  .hero-actions{gap:14px}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.01ms !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}