/* ============ SOSA DIGITAL 3D — charte dark + cyan ============ */
:root{
  --bg:#050510; --bg2:#0a1220; --cyan:#22d3ee; --cyan-soft:rgba(34,211,238,.14);
  --white:#f4f7fb; --grey:#94a3b8; --line:rgba(148,163,184,.15);
  --serif:Georgia,'Times New Roman',serif; --sans:'Segoe UI',Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--white);font-family:var(--sans);line-height:1.6;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:var(--cyan);color:var(--bg)}

/* ---------- header (fond opaque, PAS de backdrop-filter : piège connu) ---------- */
.site-header{position:fixed;inset:0 0 auto 0;z-index:100;background:rgba(5,5,16,.92);border-bottom:1px solid var(--line);transition:background .3s}
.header-in{max-width:1200px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:.9rem 1.4rem}
.logo{display:flex;flex-direction:column;line-height:1}
.logo .l1{font-family:var(--serif);font-size:1.5rem;letter-spacing:2px}
.logo .l2{font-size:.55rem;letter-spacing:7px;color:var(--cyan);margin-top:3px}
.nav-desktop{display:flex;gap:2rem;align-items:center;font-size:.95rem}
.nav-desktop a{color:var(--grey);transition:color .2s}
.nav-desktop a:hover,.nav-desktop a.active{color:var(--cyan)}
.btn{display:inline-block;background:var(--cyan);color:var(--bg);font-weight:700;padding:.7rem 1.5rem;border-radius:100px;box-shadow:0 0 24px rgba(34,211,238,.35);transition:transform .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 0 40px rgba(34,211,238,.55)}
.btn-ghost{background:transparent;color:var(--white);border:1px solid var(--line);box-shadow:none}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.burger{display:none;background:none;border:0;color:var(--white);font-size:1.7rem;cursor:pointer}

/* menu mobile = SIBLING du header (jamais enfant d'un élément filtré) */
.nav-mobile{position:fixed;inset:0;z-index:99;background:#050510;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:2rem;font-size:1.4rem;transform:translateX(100%);transition:transform .35s ease}
.nav-mobile.open{transform:translateX(0)}
.nav-mobile a{color:var(--white)}

/* ---------- hero ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;justify-content:center;text-align:center;padding:7rem 1.4rem 4rem}
#hero3d{position:absolute;inset:0;z-index:0}
.hero-in{position:relative;z-index:1;max-width:900px}
.kicker{letter-spacing:5px;font-size:.8rem;color:var(--cyan);text-transform:uppercase;margin-bottom:1.2rem}
.hero h1{font-family:var(--serif);font-weight:400;font-size:clamp(2.3rem,6vw,4.6rem);line-height:1.12}
.hero h1 .accent{color:var(--cyan);text-shadow:0 0 40px rgba(34,211,238,.5)}
.hero p.sub{color:var(--grey);font-size:clamp(1rem,2vw,1.25rem);max-width:640px;margin:1.6rem auto 2.4rem}
.hero-ctas{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}
.scroll-hint{position:absolute;bottom:1.6rem;left:50%;transform:translateX(-50%);color:var(--grey);font-size:.8rem;letter-spacing:2px;z-index:1;animation:hint 2s infinite}
@keyframes hint{0%,100%{opacity:.4;transform:translate(-50%,0)}50%{opacity:1;transform:translate(-50%,8px)}}

/* ---------- sections communes ---------- */
section{position:relative;padding:6rem 1.4rem}
.wrap{max-width:1200px;margin:auto}
.sec-kicker{letter-spacing:4px;font-size:.75rem;color:var(--cyan);text-transform:uppercase}
h2.sec-title{font-family:var(--serif);font-weight:400;font-size:clamp(1.9rem,4.5vw,3.2rem);margin:.8rem 0 1.2rem;line-height:1.15}
.sec-sub{color:var(--grey);max-width:640px}

/* ---------- section couches (décortiquée au scroll) ---------- */
.layers-sec{min-height:100vh}
.layers-stage{height:min(62vh,560px);display:flex;align-items:center;justify-content:center;perspective:1100px;margin-top:2rem}
.layers{position:relative;width:min(420px,82vw);height:280px;transform-style:preserve-3d;transform:rotateX(48deg) rotateZ(-14deg)}
.layer{position:absolute;inset:0;border-radius:14px;border:1px solid rgba(34,211,238,.35);background:linear-gradient(135deg,rgba(10,20,38,.92),rgba(5,5,16,.96));box-shadow:0 30px 60px rgba(0,0,0,.5),inset 0 0 30px rgba(34,211,238,.06);display:flex;align-items:center;gap:.9rem;padding:0 1.4rem;font-size:1.02rem}
.layer .n{color:var(--cyan);font-family:var(--serif);font-size:1.5rem}
.layer small{display:block;color:var(--grey);font-size:.8rem}
.layer-caption{text-align:center;color:var(--grey);margin-top:1.6rem;min-height:2em;font-size:1.05rem}
.layer-caption strong{color:var(--cyan)}

/* ---------- cartes services (teaser + page) ---------- */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.2rem;margin-top:2.6rem}
.card{border:1px solid var(--line);border-radius:16px;padding:1.8rem;background:linear-gradient(160deg,rgba(10,18,32,.6),rgba(5,5,16,.4));transition:transform .25s,border-color .25s,box-shadow .25s;position:relative;overflow:hidden}
.card:hover{transform:translateY(-6px);border-color:rgba(34,211,238,.5);box-shadow:0 18px 50px rgba(0,0,0,.45),0 0 30px rgba(34,211,238,.08)}
.card .ico{font-size:1.7rem;margin-bottom:.9rem}
.card h3{font-size:1.15rem;margin-bottom:.5rem}
.card p{color:var(--grey);font-size:.93rem}
.card .price{display:inline-block;margin-top:1rem;color:var(--cyan);font-weight:700;font-size:.95rem}
.card .tag{position:absolute;top:1rem;right:1rem;background:var(--cyan);color:var(--bg);font-size:.65rem;font-weight:800;letter-spacing:1px;padding:.25rem .6rem;border-radius:100px}
.cat-title{font-family:var(--serif);font-size:1.6rem;margin:3.4rem 0 .4rem;color:var(--white)}
.cat-sub{color:var(--grey);font-size:.95rem}

/* ---------- réalisations ---------- */
.realisations .cards .card{cursor:pointer}
.real-domain{color:var(--cyan);font-size:.85rem;letter-spacing:1px}

/* ---------- process ---------- */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.2rem;margin-top:2.4rem;counter-reset:step}
.step{border-left:2px solid rgba(34,211,238,.4);padding:0 0 0 1.2rem}
.step h3{font-size:1.05rem;margin-bottom:.4rem}
.step h3::before{counter-increment:step;content:"0" counter(step);display:block;font-family:var(--serif);font-size:2rem;color:var(--cyan);opacity:.8}
.step p{color:var(--grey);font-size:.9rem}

/* ---------- CTA final ---------- */
.cta-final{text-align:center;padding:7rem 1.4rem}
.cta-final h2{font-family:var(--serif);font-weight:400;font-size:clamp(2rem,5vw,3.4rem);line-height:1.15}
.cta-final p{color:var(--grey);margin:1.2rem auto 2.2rem;max-width:560px}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:2.6rem 1.4rem;color:var(--grey);font-size:.85rem}
.foot-in{max-width:1200px;margin:auto;display:flex;justify-content:space-between;gap:1.4rem;flex-wrap:wrap;align-items:center}
footer a{color:var(--grey)}footer a:hover{color:var(--cyan)}

/* ---------- WhatsApp flottant (obligatoire SOSA) ---------- */
.wa-float{position:fixed;bottom:1.4rem;right:1.4rem;z-index:90;width:56px;height:56px;border-radius:50%;background:#25d366;display:flex;align-items:center;justify-content:center;font-size:1.7rem;box-shadow:0 8px 24px rgba(0,0,0,.4)}

/* ---------- reveal util ----------
   Contenu VISIBLE par défaut (si le JS plante, rien ne disparaît).
   La classe .anim n'est posée par JS QUE quand GSAP est prêt. */
.reveal{opacity:1}
html.anim .reveal{opacity:0;transform:translateY(46px)}
@media (prefers-reduced-motion:reduce){html.anim .reveal{opacity:1!important;transform:none!important}.scroll-hint{animation:none}}

/* ---------- nav inline (visible aussi sur mobile) + bouton Offres ---------- */
.offer-btn{background:var(--cyan);color:var(--bg);font-weight:800;border:0;cursor:pointer;padding:.7rem 1.4rem;border-radius:100px;box-shadow:0 0 24px rgba(34,211,238,.35);font-size:.95rem;transition:transform .2s}
.offer-btn:hover{transform:translateY(-2px)}
.offer-overlay{position:fixed;inset:0;z-index:200;background:rgba(5,5,16,.97);display:flex;flex-direction:column;justify-content:center;align-items:center;gap:1.4rem;padding:1.4rem;opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s}
.offer-overlay.open{opacity:1;visibility:visible}
.offer-title{font-family:var(--serif);font-size:clamp(1.5rem,4.5vw,2.4rem);text-align:center;line-height:1.2}
.offer-cards{display:flex;gap:1.2rem;flex-wrap:wrap;justify-content:center;width:100%;max-width:760px}
.offer-card{flex:1 1 260px;border:1px solid rgba(34,211,238,.4);border-radius:18px;padding:1.8rem;text-align:center;background:linear-gradient(160deg,rgba(10,20,38,.9),rgba(5,5,16,.9));transform:translateY(24px);opacity:0;transition:transform .35s,opacity .35s,border-color .2s,box-shadow .2s}
.offer-overlay.open .offer-card{transform:translateY(0);opacity:1}
.offer-overlay.open .offer-card:nth-child(2){transition-delay:.08s}
.offer-card:hover{border-color:var(--cyan);box-shadow:0 0 40px rgba(34,211,238,.2)}
.offer-card .big{font-size:2.2rem}
.offer-card h3{font-size:1.25rem;margin:.6rem 0 .4rem}
.offer-card p{color:var(--grey);font-size:.9rem}
.offer-close{position:absolute;top:1.2rem;right:1.4rem;background:none;border:1px solid var(--line);color:var(--grey);width:44px;height:44px;border-radius:50%;font-size:1.2rem;cursor:pointer}
.offer-close:hover{color:var(--cyan);border-color:var(--cyan)}

/* ---------- pages service ---------- */
.page-hero{position:relative;min-height:72svh;display:flex;align-items:center;padding:8.5rem 1.4rem 3.5rem;overflow:hidden}
#page3d{position:absolute;inset:0;z-index:0;opacity:.85}
.page-hero .wrap{position:relative;z-index:1}
.page-hero h1{font-family:var(--serif);font-weight:400;font-size:clamp(2rem,5.5vw,3.8rem);line-height:1.12;max-width:820px}
.page-hero .pitch{color:var(--grey);font-size:clamp(1rem,2vw,1.2rem);max-width:620px;margin:1.4rem 0 2rem}
.price-pill{display:inline-block;border:1px solid rgba(34,211,238,.5);color:var(--cyan);border-radius:100px;padding:.5rem 1.2rem;font-weight:700;margin-bottom:1.6rem}
.includes{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1rem;margin-top:2rem}
.includes li{list-style:none;border:1px solid var(--line);border-radius:12px;padding:1rem 1.2rem;color:var(--grey);font-size:.95rem;background:rgba(10,18,32,.4)}
.includes li strong{color:var(--white);display:block;margin-bottom:.2rem}
.faq details{border:1px solid var(--line);border-radius:12px;padding:1rem 1.2rem;margin-top:.8rem;background:rgba(10,18,32,.4)}
.faq summary{cursor:pointer;font-weight:600}
.faq p{color:var(--grey);margin-top:.6rem;font-size:.95rem}

/* ---------- méthode 3D scroll ---------- */
.metho-sec{min-height:100vh}
.metho-stage{position:relative}
.metho-step{max-width:520px;border:1px solid rgba(34,211,238,.35);border-radius:16px;padding:1.8rem;background:linear-gradient(160deg,rgba(10,20,38,.92),rgba(5,5,16,.94));margin:0 auto}
.metho-step .num{font-family:var(--serif);font-size:2.4rem;color:var(--cyan)}
.metho-step h3{font-size:1.3rem;margin:.4rem 0 .6rem}
.metho-step p{color:var(--grey)}

/* ---------- logos réalisations ---------- */
.logo-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem;margin-top:2.4rem}
.logo-cell{border:1px solid var(--line);border-radius:14px;aspect-ratio:16/9;display:flex;align-items:center;justify-content:center;background:rgba(10,18,32,.4);transition:border-color .2s,box-shadow .2s}
.logo-cell:hover{border-color:rgba(34,211,238,.5);box-shadow:0 0 26px rgba(34,211,238,.1)}
.logo-cell img{max-height:56%;max-width:70%;object-fit:contain}
.logo-mono{font-family:var(--serif);font-size:1.7rem;color:var(--cyan)}
.logo-name{position:absolute;visibility:hidden}
.tech-strip{display:flex;gap:.7rem;flex-wrap:wrap;margin-top:1.6rem}
.tech-strip span{border:1px solid var(--line);border-radius:100px;padding:.4rem 1rem;color:var(--grey);font-size:.85rem}

@media (max-width:860px){
  .nav-desktop{display:flex;gap:.8rem}
  .nav-desktop a{font-size:.72rem;letter-spacing:0}
  .nav-desktop a.btn,.nav-desktop .btn{display:none}
  .header-in{padding:.7rem .8rem;gap:.5rem}
  .logo .l1{font-size:1.15rem}.logo .l2{font-size:.45rem;letter-spacing:4px}
  .offer-btn{padding:.55rem .8rem;font-size:.8rem}
  .burger{display:none}
  section{padding:4.4rem 1.2rem}
}