/* --- 1. Jetons de design ------------------------------------------------ */
:root{
  --accent:#3e5eab;
  --accent-2:#6f92dc;
  --accent-grad:linear-gradient(120deg,var(--accent) 0%,var(--accent-2) 100%);

  --dark:#232323;
  --dark-2:#2a2a2a;
  --light:#ffffff;
  --light-2:#f4f5f8;
  --line-dark:rgba(255,255,255,.12);
  --line-light:rgba(35,35,35,.10);

  --txt-on-dark:#f2f3f5;
  --txt-on-dark-mute:#adb2bd;
  --txt-on-light:#1c1c1c;
  --txt-on-light-mute:#5c5f66;

  --radius:18px;
  --radius-lg:28px;
  --shadow:0 18px 50px -20px rgba(35,35,35,.35);
  --shadow-dark:0 24px 60px -24px rgba(0,0,0,.75);

  --container:1180px;
  --gutter:24px;
  --section-y:clamp(72px,9vw,132px);

  --font:"Inter","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}

/* --- 2. Reset ------------------------------------------------------------ */
*,*::before,*::after{box-sizing:border-box}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;background:var(--dark)}
body{
  margin:0;font-family:var(--font);background:transparent;color:var(--txt-on-light);
  line-height:1.65;font-size:17px;overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{line-height:1.15;margin:0 0 .5em;letter-spacing:-.02em;font-weight:700}
p{margin:0 0 1em}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:3px solid var(--accent-2);outline-offset:3px;border-radius:6px}

/* --- 3. Utilitaires ------------------------------------------------------ */
.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:var(--section-y);position:relative}
.section--light{background:var(--light);color:var(--txt-on-light)}
.section--light-alt{background:var(--light-2);color:var(--txt-on-light)}
.section--dark{background:var(--dark);color:var(--txt-on-dark)}
.section--dark .lead{color:var(--txt-on-dark-mute)}
.text-center{text-align:center}
.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}
.grad-text{background:var(--accent-grad);-webkit-background-clip:text;background-clip:text;color:transparent}

.eyebrow{
  display:inline-flex;align-items:center;gap:.6em;font-size:.78rem;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase;margin-bottom:1.1rem;color:var(--accent);
}
.eyebrow::before{content:"";width:28px;height:2px;background:var(--accent-grad);border-radius:2px}
.section--dark .eyebrow{color:var(--accent-2)}

.title{font-size:clamp(1.9rem,4vw,3rem);margin-bottom:.6rem}
.lead{font-size:clamp(1rem,1.5vw,1.18rem);color:var(--txt-on-light-mute);max-width:62ch}
.section-head{max-width:760px;margin-bottom:clamp(40px,5vw,68px)}
.section-head.text-center{margin-inline:auto}
.section-head.text-center .lead{margin-inline:auto}

/* --- 4. Boutons ---------------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.6em;
  padding:.95em 1.6em;border-radius:999px;font-weight:600;font-size:.98rem;
  transition:transform .25s ease,box-shadow .25s ease,background-color .25s ease,color .25s ease,border-color .25s ease;
  will-change:transform;text-align:center;
}
.btn:hover{transform:translateY(-3px)}
.btn--primary{background:var(--accent-grad);color:#fff;box-shadow:0 12px 30px -12px rgba(62,94,171,.9)}
.btn--primary:hover{box-shadow:0 20px 44px -14px rgba(62,94,171,1)}
.btn--ghost{border:1.5px solid var(--line-light);color:var(--txt-on-light)}
.btn--ghost:hover{border-color:var(--accent);color:var(--accent)}
.section--dark .btn--ghost,.hero .btn--ghost,.cookie .btn--ghost{border-color:rgba(255,255,255,.34);color:var(--txt-on-dark)}
.section--dark .btn--ghost:hover,.hero .btn--ghost:hover,.cookie .btn--ghost:hover{border-color:var(--accent-2);color:var(--accent-2)}
.btn__icon{width:18px;height:18px;flex:none}

/* --- 5. En-tête ---------------------------------------------------------- */
.header{
  position:fixed;inset:0 0 auto 0;z-index:60;padding-block:18px;
  transition:background-color .35s ease,box-shadow .35s ease,padding .35s ease,border-color .35s ease;
  border-bottom:1px solid transparent;
}
.header.is-stuck{
  background:rgba(35,35,35,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  padding-block:11px;border-bottom-color:var(--line-dark);
}
.header__inner{display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:12px;color:#fff;font-weight:700;letter-spacing:-.01em}
.brand__logo{height:40px;width:auto;flex:none;display:block}
.brand__logo .arc{stroke:var(--logo-arc,#2a2a2a)}
.brand__role{
  font-size:.74rem;font-weight:500;letter-spacing:.09em;text-transform:uppercase;
  color:var(--txt-on-dark-mute);padding-left:12px;border-left:1px solid rgba(255,255,255,.22);
}
.header,.footer{--logo-arc:#f2f3f5}

.nav{display:flex;align-items:center;gap:8px}
.nav a{
  padding:.55em .9em;border-radius:999px;font-size:.94rem;color:rgba(255,255,255,.82);
  transition:color .2s ease,background-color .2s ease;
}
.nav a:hover,.nav a.is-active{color:#fff;background:rgba(255,255,255,.09)}
.nav .btn{margin-left:8px;padding:.7em 1.25em;font-size:.92rem}
.nav .btn:hover{background:var(--accent-grad);color:#fff}

.burger{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line-dark);flex-direction:column;align-items:center;justify-content:center}
.burger span{display:block;width:19px;height:2px;background:#fff;border-radius:2px;transition:transform .3s ease,opacity .2s ease}
.burger span+span{margin-top:5px}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* --- 6. Héros ------------------------------------------------------------ */
.hero{
  position:relative;min-height:100svh;display:flex;align-items:center;
  padding-block:150px 90px;background:var(--dark);color:var(--txt-on-dark);overflow:hidden;
}
.hero__veil{position:absolute;inset:0;background:
  radial-gradient(900px 520px at 78% 14%,rgba(111,146,220,.16),transparent 62%),
  radial-gradient(820px 560px at 6% 88%,rgba(62,94,171,.20),transparent 62%),
  linear-gradient(100deg,rgba(20,20,20,.82) 0%,rgba(20,20,20,.45) 52%,rgba(20,20,20,.20) 100%),
  linear-gradient(180deg,transparent 55%,rgba(35,35,35,.75) 88%,var(--dark) 100%);
}
.hero__inner{position:relative;z-index:2;max-width:900px}
.hero h1{font-size:clamp(2.4rem,6.2vw,4.4rem);margin-bottom:.35em;font-weight:800}
.hero__sub{font-size:clamp(1.05rem,1.9vw,1.32rem);color:var(--txt-on-dark-mute);max-width:60ch;margin-bottom:2.2rem}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:3.4rem}
.hero__meta{display:flex;flex-wrap:wrap;gap:10px 28px;font-size:.92rem;color:var(--txt-on-dark-mute)}
.hero__meta li{display:flex;align-items:center;gap:.55em}
.dot{width:7px;height:7px;border-radius:50%;background:var(--accent-2);flex:none;box-shadow:0 0 0 4px rgba(111,146,220,.16)}

.scroll-hint{
  position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:3;
  display:grid;place-items:center;gap:8px;font-size:.72rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--txt-on-dark-mute);
}
.scroll-hint__line{width:1px;height:38px;background:linear-gradient(180deg,transparent,var(--accent-2));animation:hintPulse 2.2s ease-in-out infinite}
@keyframes hintPulse{0%,100%{opacity:.25;transform:scaleY(.6)}50%{opacity:1;transform:scaleY(1)}}

/* --- 7. Bandeau de valeurs ---------------------------------------------- */
.strip{background:var(--dark-2);color:var(--txt-on-dark);padding-block:34px;border-block:1px solid var(--line-dark)}
.strip__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:26px}
.strip__item{display:flex;gap:14px;align-items:flex-start}
.strip__num{font-size:1.6rem;font-weight:800;line-height:1;background:var(--accent-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.strip__txt{font-size:.93rem;color:var(--txt-on-dark-mute);margin:0}
.strip__txt b{display:block;color:var(--txt-on-dark);font-size:1rem;font-weight:600;margin-bottom:2px}

/* --- 8. Services --------------------------------------------------------- */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(288px,1fr));gap:22px}
.card{
  position:relative;background:#fff;border:1px solid var(--line-light);border-radius:var(--radius-lg);
  padding:34px 30px;transition:transform .35s ease,box-shadow .35s ease,border-color .35s ease;
  overflow:hidden;height:100%;
}
.card::after{
  content:"";position:absolute;inset:0;border-radius:inherit;padding:1.5px;
  background:var(--accent-grad);opacity:0;transition:opacity .35s ease;pointer-events:none;
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);mask-composite:exclude;
}
.card:hover{transform:translateY(-7px);box-shadow:var(--shadow);border-color:transparent}
.card:hover::after{opacity:1}
.card__icon{
  width:52px;height:52px;border-radius:15px;display:grid;place-items:center;margin-bottom:20px;
  background:linear-gradient(135deg,rgba(62,94,171,.13),rgba(111,146,220,.13));color:var(--accent);
}
.card__icon svg{width:26px;height:26px}
.card h3{font-size:1.18rem;margin-bottom:.5em}
.card p{color:var(--txt-on-light-mute);font-size:.96rem;margin-bottom:1.1em}
.card__list li{
  position:relative;padding-left:22px;font-size:.9rem;color:var(--txt-on-light-mute);margin-bottom:.42em;
}
.card__list li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:50%;
  background:var(--accent-grad);
}

/* --- 9. Rupture parallax ------------------------------------------------- */
.break{
  position:relative;min-height:clamp(360px,52vh,520px);display:flex;align-items:center;
  color:#fff;background-size:cover;background-position:center;text-align:center;
}
.break::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(20,20,20,.72),rgba(20,20,20,.42))}
.break .container{position:relative;z-index:2}
.break blockquote{margin:0 auto;max-width:900px;font-size:clamp(1.35rem,3.2vw,2.35rem);font-weight:600;line-height:1.32;letter-spacing:-.02em}
.break cite{display:block;margin-top:1.4rem;font-style:normal;font-size:.9rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-2)}

/* --- 10. Méthode (timeline) --------------------------------------------- */
.timeline{position:relative;max-width:940px;margin-inline:auto;list-style:none;margin-block:0;padding:0}
.timeline::before{
  content:"";position:absolute;left:31px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--accent),var(--accent-2),transparent);
}
.step{position:relative;padding:0 0 44px 92px}
.step:last-child{padding-bottom:0}
.step__num{
  position:absolute;left:0;top:0;width:64px;height:64px;border-radius:20px;display:grid;place-items:center;
  font-weight:800;font-size:1.22rem;color:#fff;background:var(--accent-grad);
  box-shadow:0 14px 32px -14px rgba(62,94,171,.95);
}
.step__body{
  background:#fff;border:1px solid var(--line-light);border-radius:var(--radius);padding:26px 28px;
  transition:transform .35s ease,box-shadow .35s ease;
}
.step__body:hover{transform:translateX(6px);box-shadow:var(--shadow)}
.step h3{font-size:1.16rem;margin-bottom:.35em}
.step p{color:var(--txt-on-light-mute);font-size:.96rem;margin:0}
.step__tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag{
  font-size:.76rem;font-weight:600;letter-spacing:.03em;padding:.4em .85em;border-radius:999px;
  background:rgba(62,94,171,.09);color:var(--accent);
}

/* --- 11. Contact --------------------------------------------------------- */
.contact__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px;margin-top:44px}
.contact-card{
  display:flex;flex-direction:column;gap:6px;padding:28px 26px;border-radius:var(--radius-lg);
  background:rgba(255,255,255,.045);border:1px solid var(--line-dark);
  transition:transform .3s ease,background-color .3s ease,border-color .3s ease;
}
.contact-card:hover{transform:translateY(-6px);background:rgba(255,255,255,.085);border-color:rgba(111,146,220,.5)}
.contact-card__icon{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:var(--accent-grad);margin-bottom:12px}
.contact-card__icon svg{width:22px;height:22px;color:#fff}
.contact-card__label{font-size:.78rem;letter-spacing:.13em;text-transform:uppercase;color:var(--txt-on-dark-mute)}
.contact-card__value{font-size:1.06rem;font-weight:600;word-break:break-word}
.contact-card__hint{font-size:.86rem;color:var(--txt-on-dark-mute);margin:0}

/* --- 12. Pied de page ---------------------------------------------------- */
.footer{background:var(--dark-2);color:var(--txt-on-dark-mute);padding-block:52px 34px;border-top:1px solid var(--line-dark);font-size:.9rem}
.footer__top{display:flex;flex-wrap:wrap;gap:28px;justify-content:space-between;align-items:flex-start;padding-bottom:28px;border-bottom:1px solid var(--line-dark)}
.footer__links{display:flex;flex-wrap:wrap;gap:8px 22px}
.footer__links a:hover{color:var(--accent-2)}
.footer__bottom{padding-top:22px;display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between}

/* --- 13. Divers ---------------------------------------------------------- */
.progress{position:fixed;top:0;left:0;height:3px;width:0;z-index:80;background:var(--accent-grad)}

.parallax-window{background:transparent}
.parallax-mirror{z-index:-100}

.to-top{
  position:fixed;right:22px;bottom:22px;z-index:70;width:48px;height:48px;border-radius:50%;
  background:var(--accent-grad);color:#fff;display:grid;place-items:center;
  box-shadow:0 14px 30px -12px rgba(62,94,171,.95);
  opacity:0;visibility:hidden;transform:translateY(14px);transition:all .3s ease;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}
.to-top svg{width:20px;height:20px}

.cookie{
  position:fixed;left:16px;right:16px;bottom:16px;z-index:90;max-width:560px;
  background:rgba(42,42,42,.97);color:var(--txt-on-dark);border:1px solid var(--line-dark);
  border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow-dark);
  display:none;backdrop-filter:blur(10px);
}
.cookie p{font-size:.9rem;color:var(--txt-on-dark-mute);margin-bottom:14px}
.cookie__actions{display:flex;flex-wrap:wrap;gap:10px}
.cookie .btn{padding:.6em 1.2em;font-size:.88rem}

/* --- 14. Page légale ----------------------------------------------------- */
.legal{padding-block:150px var(--section-y);background:var(--light);max-width:820px;margin-inline:auto}
.legal h1{font-size:clamp(2rem,4.5vw,2.9rem);margin-bottom:.4em}
.legal h2{font-size:1.22rem;margin-top:2.4em;padding-top:1.6em;border-top:1px solid var(--line-light)}
.legal p,.legal li{color:var(--txt-on-light-mute);font-size:.98rem}
.legal ul{list-style:disc;padding-left:1.3em;margin-bottom:1em}
.legal .updated{font-size:.85rem;color:var(--txt-on-light-mute)}

/* --- 15. Responsive ------------------------------------------------------ */
@media (max-width:900px){
  .burger{display:flex}
  .brand,.burger{position:relative;z-index:2}
  .nav{
    position:fixed;inset:0 0 auto 0;top:0;padding:96px 24px 32px;flex-direction:column;align-items:stretch;gap:4px;z-index:1;
    background:rgba(35,35,35,.98);backdrop-filter:blur(16px);
    transform:translateY(-104%);transition:transform .4s cubic-bezier(.4,0,.2,1);
    border-bottom:1px solid var(--line-dark);
  }
  .nav.is-open{transform:none}
  .nav a{padding:.85em 1em;font-size:1.05rem}
  .nav .btn{margin:12px 0 0}
  .hero{min-height:auto;padding-block:132px 84px}
  .step{padding-left:74px}
  .step__num{width:54px;height:54px;border-radius:16px;font-size:1.05rem}
  .timeline::before{left:26px}
}
@media (max-width:520px){
  body{font-size:16px}
  .brand__role{display:none}
  .brand__logo{height:34px}
  .card,.step__body{padding:24px 20px}
  .hero__cta .btn{width:100%}
}

/* --- 16. Accessibilité : mouvement réduit -------------------------------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .break{background-attachment:scroll!important}
}