/* ============================================================
   base.css — DESIGN SYSTEM PARTAGÉ (toutes les pages)
   Variables, header, nav, footer, boutons, drawer.
   ⚠️ Modifier ICI = répercuté sur TOUT le site.
   ============================================================ */
:root{
  --blue:#0072f0; --blue2:#4aa3ff; --violet:#0a52c9; --cyan:#22b3ff;
  --ink:#0c1330; --muted:#5b6588; --bg:#ffffff; --accent:#ffb020;
  --surface:rgba(255,255,255,.7); --border:rgba(255,255,255,.7);
  --line:#eef1f7; --footer:#0a1030;
  --radius:24px; --shadow:0 30px 80px -30px rgba(31,47,138,.5);
  --font:'Alexandria',ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --display:'Alexandria',sans-serif;
  --aur1:#8fb0ff; --aur2:#d3c4ff; --aur3:#bff0f7; --aur-op:.5;
}
:root[data-theme="dark"]{
  --ink:#eef1ff; --muted:#9aa3c8; --bg:#070b1a;
  --surface:rgba(24,30,54,.6); --border:rgba(120,140,220,.14);
  --line:#1c2340; --footer:#05070f;
  --aur1:#2947a8; --aur2:#5a2fae; --aur3:#0d6b7a; --aur-op:.55;
  --shadow:0 30px 80px -30px rgba(0,0,0,.7);
}
html[dir="rtl"]{--font:'Alexandria',sans-serif;--display:'Alexandria',sans-serif}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;overflow-x:hidden}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden;max-width:100%;transition:background .4s,color .4s}
html[dir="rtl"] body{line-height:1.85}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}

/* Conteneurs */
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
.prose{max-width:840px;margin:0 auto;padding:0 24px}
h1,h2,h3{line-height:1.12;letter-spacing:-.025em;font-weight:800;font-family:var(--display)}
html[dir="rtl"] h1,html[dir="rtl"] h2,html[dir="rtl"] h3{letter-spacing:0;line-height:1.4;font-weight:700}

/* Fond aurora */
.aurora{position:fixed;inset:0;z-index:-3;overflow:hidden;background:
  radial-gradient(60% 50% at 15% 0%,color-mix(in srgb,var(--aur1) 40%,transparent),transparent 60%),
  radial-gradient(50% 50% at 90% 10%,color-mix(in srgb,var(--aur2) 34%,transparent),transparent 60%),
  radial-gradient(45% 45% at 80% 90%,color-mix(in srgb,var(--aur3) 30%,transparent),transparent 60%)}
.aurora span{position:absolute;border-radius:50%;filter:blur(90px);opacity:var(--aur-op);animation:drift 18s ease-in-out infinite}
.aurora .s1{width:520px;height:520px;background:var(--aur1);top:-140px;left:-100px}
.aurora .s2{width:460px;height:460px;background:var(--aur2);top:30%;right:-140px;animation-delay:-6s}
.aurora .s3{width:420px;height:420px;background:var(--aur3);bottom:-120px;left:30%;animation-delay:-12s}
@keyframes drift{0%,100%{transform:translate(0,0) scale(1)}33%{transform:translate(40px,-30px) scale(1.08)}66%{transform:translate(-30px,20px) scale(.96)}}

/* Boutons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.55rem;font-weight:600;border-radius:999px;padding:15px 28px;transition:.25s cubic-bezier(.2,.8,.2,1);cursor:pointer;border:0;font-size:15px;position:relative;overflow:hidden;text-align:center}
.btn svg{width:19px;height:19px}
.btn-primary{background:linear-gradient(120deg,var(--blue),var(--violet));color:#fff;box-shadow:0 14px 34px -12px rgba(47,85,230,.7)}
.btn-primary::after{content:"";position:absolute;top:0;left:-120%;width:60%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.5),transparent);transform:skewX(-20deg);transition:.6s}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 20px 44px -12px rgba(124,58,237,.6)}
.btn-primary:hover::after{left:130%}
.btn-ghost{background:var(--surface);color:var(--blue);border:1.5px solid var(--border);backdrop-filter:blur(8px)}
.btn-ghost:hover{border-color:var(--blue);transform:translateY(-3px)}
.btn-wa{background:#25D366;color:#fff;box-shadow:0 14px 34px -12px rgba(37,211,102,.7)}
.btn-wa:hover{background:#1eb857;transform:translateY(-3px)}
:root[data-theme="dark"] .btn-primary{background:#fff;color:var(--blue);box-shadow:0 14px 34px -12px rgba(0,0,0,.55)}
:root[data-theme="dark"] .btn-primary:hover{background:#e9f1ff;box-shadow:0 20px 44px -12px rgba(0,0,0,.7)}
.dl-btn{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;padding:14px 26px;border-radius:999px;background:linear-gradient(120deg,var(--blue),var(--violet));color:#fff;text-decoration:none;transition:.25s;white-space:nowrap;box-shadow:0 14px 34px -12px rgba(47,85,230,.7)}
.dl-btn:hover{transform:translateY(-3px)}
.back{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:14px;padding:11px 18px;border-radius:999px;background:linear-gradient(120deg,var(--blue),var(--violet));color:#fff;text-decoration:none;transition:transform .25s}
.back:hover{transform:translateY(-2px)}

/* Chips / labels */
.eyebrow{display:inline-flex;align-items:center;gap:.55rem;font-size:13px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--blue);background:color-mix(in srgb,var(--blue) 8%,transparent);border:1px solid color-mix(in srgb,var(--blue) 20%,transparent);padding:7px 16px;border-radius:999px}
html[dir="rtl"] .eyebrow{letter-spacing:0}
.tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--blue);background:color-mix(in srgb,var(--blue) 8%,transparent);border:1px solid color-mix(in srgb,var(--blue) 20%,transparent);padding:6px 14px;border-radius:999px}
html[dir="rtl"] .tag{letter-spacing:0}

/* Header / nav */
header{position:sticky;top:0;z-index:60;transition:.3s}
header.scrolled{background:color-mix(in srgb,var(--bg) 72%,transparent);backdrop-filter:blur(16px);box-shadow:0 8px 30px -18px rgba(0,0,0,.35)}
nav{display:flex;align-items:center;justify-content:space-between;height:90px;gap:16px}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:21px;font-family:var(--display);flex-shrink:0}
.logo-img{height:66px;width:auto}
.logo-ar-img{display:none}
html[dir="rtl"] .logo-fr-img{display:none}
html[dir="rtl"] .logo-ar-img{display:block}
:root[data-theme="dark"] .logo-img{filter:brightness(0) invert(1)}
.nav-r{display:flex;gap:10px;align-items:center}
.nav-cta{display:flex;gap:9px;align-items:center}
.toggle{height:42px;min-width:42px;padding:0 10px;border-radius:12px;display:grid;place-items:center;cursor:pointer;background:var(--surface);border:1.5px solid var(--border);backdrop-filter:blur(8px);font-size:18px;transition:.25s;color:var(--ink);text-decoration:none}
.toggle:hover{transform:translateY(-2px);border-color:var(--blue)}
.nav-links{display:flex;gap:28px;font-weight:500;font-size:15px;align-items:center;color:var(--ink)}
.nav-links a{position:relative;opacity:.82;white-space:nowrap;text-decoration:none;transition:.2s}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:linear-gradient(90deg,var(--blue),var(--violet));border-radius:2px;transition:.3s}
html[dir="rtl"] .nav-links a::after{left:auto;right:0}
.nav-links a:hover{opacity:1;color:var(--blue)}
.nav-links a:hover::after{width:100%}
/* Menu burger mobile (défini AVANT les media-queries qui l'affichent) */
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.burger span{width:24px;height:2.5px;background:var(--ink);border-radius:2px;transition:.3s}
.drawer{position:fixed;inset:0;z-index:90;background:color-mix(in srgb,var(--bg) 90%,transparent);backdrop-filter:blur(18px);display:flex;flex-direction:column;padding:90px 32px 40px;gap:4px;transform:translateX(100%);transition:.4s cubic-bezier(.2,.8,.2,1);visibility:hidden}
.drawer.open{transform:none;visibility:visible}
.drawer a{font-size:22px;font-weight:600;font-family:var(--display);padding:14px 0;border-bottom:1px solid var(--line);color:var(--ink);text-decoration:none;opacity:1}
.drawer .dl-btn,.drawer .btn{margin-top:20px;justify-content:center;border-bottom:0;color:#fff}
.drawer-close{position:absolute;top:26px;inset-inline-end:26px;font-size:30px;background:none;border:0;color:var(--ink);cursor:pointer;line-height:1}
/* Ligne du bas du drawer : icône thème + bouton Télécharger alignés */
.drawer-actions{display:flex;align-items:center;gap:12px;margin-top:22px}
.drawer-actions .dl-btn,.drawer-actions .btn{flex:1;margin-top:0;justify-content:center}
.drawer-theme{flex:0 0 auto;width:54px;height:54px;padding:0;display:grid;place-items:center;border:1.5px solid var(--border);border-radius:14px;background:var(--surface);color:var(--ink);cursor:pointer;line-height:1}
.drawer-theme .ic{font-size:24px;line-height:1}
.drawer-theme:active{transform:scale(.94)}

/* Responsive nav : cacher le menu + le thème, afficher le burger */
@media(max-width:1100px){.nav-links{display:none}.nav-cta .btn-primary,.nav-r .dl-btn,#themeBtn{display:none}.burger{display:flex}}
@media(max-width:600px){
  nav{height:74px;gap:8px}
  .logo-img{height:54px;width:auto}
  .nav-r,.nav-cta{gap:7px;flex-shrink:0}
  .toggle{height:40px;min-width:40px;padding:0 8px;font-size:17px}
}

/* Footer (large, identique partout) */
footer{background:var(--footer);color:#c7cee6;padding:66px 0 30px;margin-top:100px;text-align:left}
html[dir="rtl"] footer{text-align:right}
footer>.wrap{max-width:1200px}
.fgrid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:44px}
footer h5{color:#fff;font-size:15px;margin-bottom:18px}
footer a{display:block;padding:6px 0;font-size:14px;color:#aab3d4;transition:.2s}
footer a:hover{color:#fff}
footer .logo-img{height:56px;filter:brightness(0) invert(1)}
.fabout{margin-top:18px;font-size:14px;max-width:300px;color:#9aa3c6;line-height:1.6}
.socials{display:flex;gap:12px;margin-top:22px}
.socials a{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:var(--surface);border:1px solid var(--border);color:var(--ink);font-size:18px;transition:.25s;padding:0}
.socials a:hover{transform:translateY(-3px);background:linear-gradient(135deg,var(--blue),var(--cyan));color:#fff;border-color:transparent}
.fbottom{border-top:1px solid #23294a;margin-top:44px;padding-top:24px;display:flex;justify-content:space-between;font-size:13px;color:#7c85ab;flex-wrap:wrap;gap:10px}
.fbottom a{color:inherit;display:inline;padding:0}
@media(max-width:760px){.fgrid{grid-template-columns:1fr 1fr}}
@media(max-width:460px){.fgrid{grid-template-columns:1fr}}

/* Divers */
.wa-float{position:fixed;bottom:22px;inset-inline-end:22px;z-index:70;width:60px;height:60px;border-radius:50%;background:#25D366;display:grid;place-items:center;font-size:30px;box-shadow:0 14px 34px -8px rgba(37,211,102,.7);animation:floatY 3s ease-in-out infinite;color:#fff}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}