/* =====================================================================
   THEMIS CYBER : Design system partagé
   Chargé par toutes les pages du site. Contient les éléments strictement
   identiques d'une page à l'autre : variables, reset, boutons, en-tête,
   navigation, pied de page. Le CSS propre à chaque page (héros, grilles,
   composants spécifiques) reste dans le <style> de la page concernée.
   ===================================================================== */

:root{
  --bg:#ffffff; --bg-soft:#f4f5fa; --panel:#ffffff; --panel-2:#f7f7fc;
  --border:rgba(20,20,45,.10); --border-strong:rgba(20,20,45,.18);
  --text:#14141f; --text-dim:#55556e; --text-dimmer:#6b6b85;
  --cyan:#087c90; --cyan-bright:#22e2ff; --purple:#5a23e0; --purple-2:#7c3dff; --purple-dark:#421bb0; --navy-deep:#170043;
  --grad-soft: linear-gradient(120deg, rgba(10,147,171,.12), rgba(90,35,224,.10));
  --radius:18px; --shadow: 0 20px 50px rgba(20,20,60,.10); --maxw:1600px;
}

/* ---------- Reset & typographie de base ---------- */
*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
body{background:var(--bg); color:var(--text); font-family:Arial, Helvetica, sans-serif; line-height:1.6; -webkit-font-smoothing:antialiased; overflow-x:hidden;}
h1,h2,h3,h4{font-family:Arial, Helvetica, sans-serif; font-weight:700; letter-spacing:-.01em;}
a{color:inherit; text-decoration:none;}
img{max-width:100%; display:block;}
.wrap{max-width:var(--maxw); margin:0 auto; padding:0 24px;}
section{position:relative;}

/* ---------- Lien d'évitement clavier ---------- */
.skip-link{
  position:absolute; left:-9999px; top:0; width:1px; height:1px; overflow:hidden;
  background:var(--purple); color:#ffffff; padding:12px 20px; border-radius:0 0 10px 0;
  z-index:1000; font-size:.9rem; font-weight:600;
}
.skip-link:focus{
  left:0; width:auto; height:auto; overflow:visible;
}

/* ---------- Eyebrow & accents de texte ---------- */
.eyebrow{display:inline-block; font-size:clamp(1.25rem,2.1vw,1.7rem); font-weight:800; letter-spacing:-.01em; color:var(--purple); border-left:4px solid var(--purple); padding-left:14px; margin-bottom:18px; line-height:1.15;}
.grad-text{color:var(--purple);}

/* ---------- Boutons ---------- */
.btn{display:inline-flex; align-items:center; justify-content:center; gap:8px; padding:14px 26px; border-radius:12px; font-weight:600; font-size:.95rem; cursor:pointer; border:1px solid transparent; transition:transform .15s ease, box-shadow .15s ease, background .15s ease; white-space:nowrap;}
.btn:hover{transform:translateY(-2px);}
.btn-primary{background:var(--purple); color:#ffffff; box-shadow:0 6px 16px rgba(90,35,224,.22);}
.btn-primary:hover{background:var(--purple-dark); box-shadow:0 8px 20px rgba(90,35,224,.3);}
.btn-ghost{background:transparent; color:var(--text); border-color:var(--border-strong);}
.btn-ghost:hover{background:rgba(20,20,45,.05); border-color:rgba(20,20,45,.3);}
.btn-sm{padding:10px 18px; font-size:.85rem; border-radius:10px;}

/* ---------- En-tête / navigation ---------- */
header.site{position:fixed; top:0; left:0; right:0; z-index:100; background:rgba(255,255,255,.82); backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px); border-bottom:1px solid var(--border);}
.nav{display:flex; align-items:center; justify-content:space-between; padding:14px 24px; max-width:var(--maxw); margin:0 auto;}
.brand{display:flex; align-items:center; gap:10px;}
.brand img{height:34px; width:auto; aspect-ratio:1/1; object-fit:contain;}
.brand .wordmark{font-weight:700; font-size:1.08rem; letter-spacing:-.01em;}
.brand .wordmark span{color:var(--purple-2);}
.nav-links{display:flex; align-items:center; gap:30px;}
.nav-links a{font-size:.92rem; color:var(--text-dim); font-weight:500; transition:color .15s;}
.nav-links a:hover{color:var(--text);}
.nav-item-dropdown{position:relative;}
.nav-item-dropdown > a{display:inline-flex; align-items:center; gap:5px;}
.nav-item-dropdown .chevron{font-size:.6rem; color:var(--text-dimmer); transition:transform .15s;}
.nav-item-dropdown:hover .chevron{transform:rotate(180deg);}
.dropdown-menu{
  position:absolute; top:100%; left:50%; transform:translateX(-50%) translateY(6px);
  background:#ffffff; border:1px solid var(--border-strong); border-radius:14px; box-shadow:var(--shadow);
  padding:8px; min-width:250px; opacity:0; visibility:hidden; transition:opacity .15s ease, transform .15s ease;
  z-index:200;
}
.nav-item-dropdown:hover .dropdown-menu, .nav-item-dropdown:focus-within .dropdown-menu{
  opacity:1; visibility:visible; transform:translateX(-50%) translateY(2px);
}
.dropdown-menu a{display:flex; align-items:center; gap:10px; padding:10px 12px; border-radius:10px; font-size:.87rem; color:var(--text); white-space:nowrap;}
.dropdown-menu a:hover{background:var(--bg-soft); color:var(--purple);}
.nav-cta{display:flex; align-items:center; gap:14px;}
.burger{display:none; flex-direction:column; gap:5px; cursor:pointer; background:none; border:none;}
.burger span{width:24px; height:2px; background:var(--text);}

/* ---------- Fil d'ariane ---------- */
.breadcrumb{font-size:.85rem; color:var(--text-dimmer); margin-bottom:22px;}
.breadcrumb a{color:var(--purple);}

/* ---------- Pied de page ---------- */
footer{border-top:1px solid var(--border); padding:50px 0 30px; background:var(--bg-soft);}
.footer-brand{display:flex; align-items:center; gap:10px;}
.footer-brand img{height:26px; width:auto; aspect-ratio:1/1; object-fit:contain;}
.footer-links{display:flex; gap:24px; flex-wrap:wrap;}
.footer-links a{font-size:.87rem; color:var(--text-dim);}
.footer-links a:hover{color:var(--text);}
.footer-bottom a{color:var(--text-dimmer); text-decoration:underline;}
.footer-bottom a:hover{color:var(--purple);}

/* ---------- Navigation mobile ---------- */
@media (max-width:980px){
  .nav-links{display:none; position:fixed; top:63px; left:0; right:0; flex-direction:column; background:rgba(255,255,255,.98); border-bottom:1px solid var(--border); padding:18px 24px; gap:18px; box-shadow:0 12px 24px rgba(20,20,60,.08);}
  .nav-links.open{display:flex;}
  .dropdown-menu{position:static; opacity:1; visibility:visible; transform:none; box-shadow:none; border:none; background:transparent; padding:4px 0 0 16px; min-width:0;}
  .nav-item-dropdown .chevron{display:none;}
  .burger{display:flex;}
}