/* =========================================================
   Lechat Consulting — feuille de style principale
   Palette : rouge brique / noir
   ========================================================= */

:root{
  --red:#B93A32;
  --red-bright:#D9463B;
  --red-deep:#7C221D;
  --red-soft:rgba(185,58,50,.14);

  --ink:#0B0B0C;
  --ink-2:#101012;
  --ink-3:#151517;
  --ink-4:#1C1C20;

  --text:#EFEFF1;
  --muted:#9C9CA6;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);

  --font:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --font-display:'Space Grotesk','Inter',-apple-system,BlinkMacSystemFont,Helvetica,Arial,sans-serif;

  --wrap:1180px;
  --radius:14px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink);
  color:var(--text);
  font-family:var(--font);
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--font-display);line-height:1.12;margin:0;letter-spacing:-.02em}
p{margin:0 0 1rem}
ul,ol{margin:0;padding:0;list-style:none}

.container{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:200;
  background:var(--red);color:#fff;padding:12px 18px;border-radius:0 0 8px 0;
}
.skip-link:focus{left:0}

:focus-visible{outline:2px solid var(--red-bright);outline-offset:3px;border-radius:4px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(11,11,12,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),background .3s var(--ease);
}
.site-header.is-stuck{border-bottom-color:var(--line);background:rgba(11,11,12,.92)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px}

.brand{display:flex;align-items:center;gap:12px}
.brand-mark{width:40px;height:40px;transition:transform .4s var(--ease)}
.brand:hover .brand-mark{transform:rotate(-6deg) scale(1.06)}
.brand-text{display:flex;flex-direction:column;line-height:1.02;font-family:var(--font-display)}
.brand-text strong{font-size:17px;font-weight:700;letter-spacing:.06em}
.brand-text span{font-size:14px;font-weight:400;letter-spacing:.16em;color:var(--muted)}

.nav{display:flex;align-items:center;gap:30px}
.nav>a{font-size:15px;color:var(--muted);transition:color .2s;position:relative;padding:6px 0}
.nav>a:not(.btn)::after{
  content:'';position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--red);
  transition:width .3s var(--ease);
}
.nav>a:not(.btn):hover{color:var(--text)}
.nav>a:not(.btn):hover::after{width:100%}
.nav-cta{color:#fff}

.burger{
  display:none;width:44px;height:44px;background:none;border:1px solid var(--line);
  border-radius:10px;cursor:pointer;padding:0;place-items:center;
}
.burger span{display:block;width:18px;height:2px;background:var(--text);margin:3px auto;transition:transform .3s var(--ease),opacity .2s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* ---------- Boutons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font);font-size:15px;font-weight:600;
  padding:14px 26px;border-radius:10px;border:1px solid transparent;
  cursor:pointer;transition:transform .2s var(--ease),background .2s,border-color .2s,box-shadow .3s;
  white-space:nowrap;
}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{width:100%}
.btn-primary{background:var(--red);color:#fff;box-shadow:0 8px 24px -12px rgba(185,58,50,.9)}
.btn-primary:hover{background:var(--red-bright);transform:translateY(-2px);box-shadow:0 14px 30px -12px rgba(217,70,59,.95)}
.btn-ghost{border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--red);color:#fff;transform:translateY(-2px)}

/* ---------- Hero ---------- */
.hero{position:relative;padding:120px 0 90px;overflow:hidden}
.hero-bg{
  position:absolute;inset:-20% -10% auto -10%;height:140%;
  background:
    radial-gradient(560px 420px at 78% 8%, rgba(185,58,50,.30), transparent 62%),
    radial-gradient(760px 520px at 8% 0%, rgba(124,34,29,.28), transparent 60%),
    repeating-linear-gradient(60deg, rgba(255,255,255,.028) 0 1px, transparent 1px 46px),
    repeating-linear-gradient(-60deg, rgba(255,255,255,.028) 0 1px, transparent 1px 46px);
  pointer-events:none;
}
.hero-fade{
  position:absolute;left:0;right:0;bottom:0;height:180px;
  background:linear-gradient(to bottom,transparent,var(--ink));pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:900px}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;
  color:var(--red-bright);margin:0 0 22px;
}
.eyebrow::before{content:'';width:26px;height:2px;background:var(--red)}

.hero h1{font-size:clamp(2.5rem,6.2vw,4.6rem);font-weight:700;margin-bottom:26px}
.hero h1 .accent{color:var(--red-bright)}
.lead{font-size:clamp(1.05rem,1.7vw,1.25rem);color:var(--muted);max-width:640px;margin-bottom:34px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:64px}

.stats{display:flex;flex-wrap:wrap;gap:14px 56px;border-top:1px solid var(--line);padding-top:30px}
.stats li{display:flex;flex-direction:column}
.stat-num,.stat-suffix{font-family:var(--font-display);font-size:2.4rem;font-weight:700;line-height:1;color:#fff}
.stats li{position:relative}
.stat-suffix{color:var(--red-bright)}
.stats li{flex-direction:row;flex-wrap:wrap;align-items:baseline;gap:2px}
.stat-label{flex-basis:100%;font-size:14px;color:var(--muted);margin-top:8px}

/* ---------- Bandeau ---------- */
.strip{border-block:1px solid var(--line);background:var(--ink-2)}
.strip-inner{
  display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:14px 26px;
  padding:20px 24px;font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);
}
.strip-inner i{width:5px;height:5px;background:var(--red);transform:rotate(45deg);display:block}

/* ---------- Sections ---------- */
.section{padding:110px 0;position:relative}
.section-alt{background:var(--ink-2);border-block:1px solid var(--line)}
.section-head{max-width:680px;margin-bottom:58px}
.section-head h2{font-size:clamp(1.9rem,3.6vw,2.85rem);font-weight:700;margin-bottom:18px}
.section-sub{color:var(--muted);font-size:1.05rem}

/* ---------- Cartes services ---------- */
.grid{display:grid;gap:22px}
.cards{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.card{
  position:relative;background:var(--ink-3);border:1px solid var(--line);
  border-radius:var(--radius);padding:32px 28px 28px;overflow:hidden;
  transition:transform .35s var(--ease),border-color .35s,background .35s;
}
.card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--red),var(--red-bright));
  transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);background:var(--ink-4)}
.card:hover::before{transform:scaleX(1)}
.card-icon{
  width:46px;height:46px;border-radius:11px;display:grid;place-items:center;
  background:var(--red-soft);border:1px solid rgba(185,58,50,.3);margin-bottom:20px;
}
.card-icon svg{width:22px;height:22px;fill:none;stroke:var(--red-bright);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:1.18rem;font-weight:600;margin-bottom:12px}
.card p{color:var(--muted);font-size:.96rem;margin-bottom:18px}

.ticks li{position:relative;padding-left:22px;font-size:.9rem;color:var(--muted);margin-bottom:8px}
.ticks li::before{
  content:'';position:absolute;left:0;top:.55em;width:7px;height:7px;
  background:var(--red);transform:rotate(45deg);
}
.ticks.big li{font-size:1rem;color:var(--text);margin-bottom:14px;padding-left:26px}

/* ---------- Méthode ---------- */
.steps{display:grid;gap:22px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));counter-reset:s}
.step{
  position:relative;padding:30px 26px;border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(180deg,var(--ink-3),rgba(21,21,23,.4));
  transition:border-color .3s,transform .3s var(--ease);
}
.step:hover{border-color:rgba(185,58,50,.5);transform:translateY(-4px)}
.step-num{
  font-family:var(--font-display);font-size:2.6rem;font-weight:700;line-height:1;
  color:transparent;-webkit-text-stroke:1.5px rgba(185,58,50,.85);display:block;margin-bottom:18px;
}
.step h3{font-size:1.1rem;font-weight:600;margin-bottom:10px}
.step p{color:var(--muted);font-size:.94rem;margin-bottom:14px}
.step-meta{
  display:inline-block;font-size:12px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--red-bright);border:1px solid rgba(185,58,50,.35);border-radius:99px;padding:4px 12px;
}

/* ---------- Split ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.split.reverse .split-text{order:2}
.split.reverse .split-side{order:1}
.split-text h2{font-size:clamp(1.8rem,3.4vw,2.6rem);font-weight:700;margin-bottom:18px}
.split-text .btn{margin-top:12px}

.tech-panel{
  background:var(--ink-3);border:1px solid var(--line);border-radius:var(--radius);padding:30px;
  position:relative;overflow:hidden;
}
.tech-panel::after{
  content:'';position:absolute;right:-60px;bottom:-60px;width:220px;height:220px;
  background:radial-gradient(circle,rgba(185,58,50,.22),transparent 70%);
}
.tech-title{
  font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);margin-bottom:20px;
}
.chips{display:flex;flex-wrap:wrap;gap:10px;position:relative;z-index:1}
.chips span{
  font-size:.88rem;padding:8px 14px;border-radius:8px;
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text);
  transition:border-color .25s,background .25s,transform .25s var(--ease);
}
.chips span:hover{border-color:var(--red);background:var(--red-soft);transform:translateY(-2px)}

.values{display:grid;gap:16px}
.value{
  border-left:2px solid var(--red);padding:4px 0 4px 20px;
}
.value h4{font-size:1.02rem;font-weight:600;margin-bottom:6px}
.value p{color:var(--muted);font-size:.94rem;margin:0}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:32px;align-items:start}
.form{
  background:var(--ink-3);border:1px solid var(--line);border-radius:var(--radius);padding:32px;
}
.field{display:flex;flex-direction:column;margin-bottom:18px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field label{font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.field input,.field select,.field textarea{
  font-family:var(--font);font-size:.98rem;color:var(--text);
  background:var(--ink);border:1px solid var(--line);border-radius:10px;padding:13px 15px;
  transition:border-color .25s,box-shadow .25s;resize:vertical;width:100%;
}
.field input::placeholder,.field textarea::placeholder{color:#5C5C66}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--red);box-shadow:0 0 0 3px var(--red-soft);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 20px) 22px,calc(100% - 14px) 22px;background-size:6px 6px;background-repeat:no-repeat}
.form-note{margin:14px 0 0;font-size:.9rem;color:var(--muted);min-height:1.2em}
.form-legal{margin:14px 0 0;font-size:.82rem;line-height:1.55;color:#7A7A84}
.form-legal a{color:var(--muted);text-decoration:underline;text-underline-offset:2px}
.form-legal a:hover{color:var(--red-bright)}

/* Champ piège : hors écran plutôt que display:none, que certains robots détectent. */
.honeypot{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

/* Bouton en cours d'envoi */
.btn[aria-busy="true"]{opacity:.65;pointer-events:none}
.form-note.error{color:var(--red-bright)}
.form-note.ok{color:#6FCF97}

.contact-side{display:grid;gap:16px}
.contact-card{
  background:var(--ink-3);border:1px solid var(--line);border-radius:var(--radius);padding:24px;
}
.contact-card h3{font-size:1rem;font-weight:600;margin-bottom:10px}
.contact-card p{margin:0 0 6px;font-size:.96rem}
.contact-card a{color:var(--red-bright)}
.contact-card a:hover{text-decoration:underline}
.contact-card .muted{color:var(--muted);font-size:.88rem}
.accent-card{
  background:linear-gradient(140deg,rgba(185,58,50,.22),rgba(21,21,23,.6));
  border-color:rgba(185,58,50,.4);
}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--line);background:var(--ink-2);padding:44px 0}
.footer-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px}
.footer-brand{display:flex;align-items:center;gap:12px}
.footer-nav{display:flex;flex-wrap:wrap;gap:22px}
.footer-nav a{font-size:14px;color:var(--muted);transition:color .2s}
.footer-nav a:hover{color:var(--red-bright)}
.footer-legal{flex-basis:100%;margin:0;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:#6E6E78}

/* ---------- Animations ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
.cards .reveal.is-visible,.steps .reveal.is-visible{transition-delay:var(--d,0ms)}

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

/* ---------- Responsive ---------- */
@media (max-width:960px){
  .split,.contact-grid{grid-template-columns:1fr;gap:36px}
  .split.reverse .split-text,.split.reverse .split-side{order:initial}
}
@media (max-width:820px){
  .burger{display:grid}
  .nav{
    position:fixed;inset:76px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;
    background:var(--ink-2);border-bottom:1px solid var(--line);padding:10px 24px 26px;
    transform:translateY(-12px);opacity:0;pointer-events:none;transition:opacity .25s,transform .25s var(--ease);
  }
  .nav.is-open{opacity:1;transform:none;pointer-events:auto}
  .nav>a{padding:15px 0;border-bottom:1px solid var(--line);font-size:16px}
  .nav-cta{margin-top:18px;border-bottom:none;justify-content:center}
  .hero{padding:78px 0 60px}
  .section{padding:78px 0}
  .stats{gap:26px 40px}
}
@media (max-width:560px){
  body{font-size:16px}
  .field-row{grid-template-columns:1fr}
  .form{padding:24px 20px}
  .hero-actions .btn{width:100%}
}