/* ============================================
   SEN ECOSYSTEM - CSS PREMIUM v2
   Commerce. Banque. Crypto.
   ============================================ */

:root{
  --emerald:#0F6B4E;
  --emerald-dark:#0A4D38;
  --emerald-light:#1a8a64;
  --gold:#D4A574;
  --gold-light:#E8C9A1;
  --gold-dark:#B88B5A;
  --black:#0A0A0A;
  --white:#FFFFFF;
  --gray:#6B7280;
  --gray-light:#E5E7EB;
  --bg-light:#FAFAF7;
  --bg-dark:#0A0A0A;
  --green-success:#22C55E;
  --red-warn:#EF4444;
  --blue:#3B82F6;
  --shadow-sm:0 2px 8px rgba(0,0,0,0.06);
  --shadow-md:0 8px 24px rgba(0,0,0,0.10);
  --shadow-lg:0 20px 60px rgba(15,107,78,0.15);
}

*{margin:0;padding:0;box-sizing:border-box;font-family:'Inter','Helvetica Neue',-apple-system,sans-serif}
html{scroll-behavior:smooth}
body{background:var(--white);color:var(--black);line-height:1.6;overflow-x:hidden}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit;transition:all 0.3s}

/* ============ HEADER ============ */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(255,255,255,0.95);
  backdrop-filter:blur(20px);
  border-bottom:1px solid var(--gray-light);
  padding:16px 0;
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:20px;color:var(--emerald)}
.brand img{width:40px;height:40px;border-radius:8px;object-fit:cover}
.nav{display:flex;gap:24px;align-items:center}
.nav a{color:var(--black);font-weight:500;font-size:15px}
.nav a:hover{color:var(--emerald)}
.lang-switch{padding:8px 12px;border:1px solid var(--gray-light);border-radius:8px;background:white;cursor:pointer}
.btn-cta{background:var(--emerald);color:white;padding:10px 20px;border-radius:10px;font-weight:600;border:none;cursor:pointer}
.btn-cta:hover{background:var(--emerald-dark);transform:translateY(-2px);box-shadow:var(--shadow-md)}

/* ============ HERO ============ */
.hero{
  background:linear-gradient(135deg,#0F6B4E 0%,#0A4D38 50%,#0A0A0A 100%);
  color:white;padding:80px 0 100px;position:relative;overflow:hidden
}
.hero::before{
  content:'';position:absolute;top:0;right:0;width:600px;height:600px;
  background:radial-gradient(circle,rgba(212,165,116,0.25) 0%,transparent 70%);
  border-radius:50%;
}
.hero-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:60px;align-items:center;position:relative;z-index:2}
.hero-badge{display:inline-block;background:rgba(212,165,116,0.2);color:var(--gold-light);padding:8px 16px;border-radius:20px;font-size:13px;font-weight:600;margin-bottom:24px;border:1px solid rgba(212,165,116,0.3)}
.hero h1{font-size:clamp(36px,5vw,64px);font-weight:900;line-height:1.1;margin-bottom:24px;letter-spacing:-1px}
.hero h1 .gold{color:var(--gold);background:linear-gradient(135deg,var(--gold) 0%,var(--gold-light) 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero p{font-size:18px;color:rgba(255,255,255,0.85);margin-bottom:32px;max-width:520px}
.hero-cta{display:flex;gap:16px;flex-wrap:wrap}
.btn-primary{background:var(--gold);color:var(--black);padding:16px 32px;border-radius:12px;font-weight:700;font-size:16px;display:inline-flex;align-items:center;gap:8px;cursor:pointer;border:none}
.btn-primary:hover{background:var(--gold-light);transform:translateY(-3px);box-shadow:0 10px 30px rgba(212,165,116,0.4)}
.btn-secondary{background:transparent;color:white;padding:16px 32px;border-radius:12px;font-weight:600;font-size:16px;border:2px solid rgba(255,255,255,0.3);cursor:pointer}
.btn-secondary:hover{border-color:var(--gold);color:var(--gold)}
.hero-visual{position:relative}
.hero-visual img{border-radius:24px;box-shadow:0 30px 80px rgba(0,0,0,0.4);border:2px solid rgba(212,165,116,0.3)}

/* ============ STATS ============ */
.stats{background:var(--bg-light);padding:60px 0;border-top:1px solid var(--gray-light);border-bottom:1px solid var(--gray-light)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;text-align:center}
.stat-item h3{font-size:42px;font-weight:900;color:var(--emerald);margin-bottom:8px}
.stat-item p{color:var(--gray);font-size:14px;font-weight:500}

/* ============ SECTIONS ============ */
section{padding:100px 0}
.section-title{text-align:center;margin-bottom:64px}
.section-title .tag{display:inline-block;background:rgba(15,107,78,0.1);color:var(--emerald);padding:6px 14px;border-radius:20px;font-size:13px;font-weight:600;margin-bottom:16px;text-transform:uppercase;letter-spacing:1px}
.section-title h2{font-size:clamp(28px,4vw,48px);font-weight:800;color:var(--black);margin-bottom:16px;letter-spacing:-1px}
.section-title p{font-size:17px;color:var(--gray);max-width:640px;margin:0 auto}

/* ============ 3 PILIERS ============ */
.pillars{background:white}
.pillars-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.pillar-card{
  background:white;border-radius:24px;padding:40px 32px;
  box-shadow:var(--shadow-sm);border:1px solid var(--gray-light);
  transition:all 0.4s;position:relative;overflow:hidden
}
.pillar-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:var(--emerald)}
.pillar-card.tew::before{background:linear-gradient(90deg,#0F6B4E,#22C55E)}
.pillar-card.banc::before{background:linear-gradient(90deg,#0F6B4E,#D4A574)}
.pillar-card.crypt::before{background:linear-gradient(90deg,#D4A574,#F59E0B)}
.pillar-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:var(--gold)}
.pillar-logo{width:80px;height:80px;border-radius:20px;object-fit:cover;margin-bottom:24px;box-shadow:var(--shadow-md)}
.pillar-card h3{font-size:28px;font-weight:800;margin-bottom:12px;color:var(--black)}
.pillar-card .subtitle{color:var(--emerald);font-weight:600;margin-bottom:20px;font-size:15px}
.pillar-card ul{list-style:none;margin-bottom:24px}
.pillar-card ul li{padding:8px 0;color:var(--gray);display:flex;align-items:flex-start;gap:8px;font-size:14px}
.pillar-card ul li::before{content:'✓';color:var(--emerald);font-weight:bold;flex-shrink:0}
.pillar-mockup{width:100%;border-radius:12px;margin-bottom:20px;border:1px solid var(--gray-light)}
.btn-pillar{display:inline-block;padding:12px 24px;background:var(--bg-light);color:var(--black);border-radius:10px;font-weight:600;font-size:14px;border:1px solid var(--gray-light)}
.btn-pillar:hover{background:var(--emerald);color:white;border-color:var(--emerald)}

/* ============ ASSISTANCE IA ============ */
.ai-section{
  background:linear-gradient(135deg,#0A0A0A 0%,#1a1a1a 100%);
  color:white;position:relative;overflow:hidden
}
.ai-section::before{
  content:'';position:absolute;top:-100px;right:-100px;width:500px;height:500px;
  background:radial-gradient(circle,rgba(212,165,116,0.15) 0%,transparent 70%);border-radius:50%
}
.ai-section .section-title h2{color:white}
.ai-section .section-title .tag{background:rgba(212,165,116,0.2);color:var(--gold)}
.ai-section .section-title p{color:rgba(255,255,255,0.7)}
.ai-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative;z-index:2}
.ai-card{
  background:rgba(255,255,255,0.05);backdrop-filter:blur(10px);
  border:1px solid rgba(212,165,116,0.2);border-radius:20px;padding:32px;
  transition:all 0.3s
}
.ai-card:hover{border-color:var(--gold);transform:translateY(-4px)}
.ai-icon{width:56px;height:56px;background:linear-gradient(135deg,var(--gold),var(--gold-dark));border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:20px}
.ai-card h3{font-size:20px;font-weight:700;margin-bottom:12px;color:var(--gold)}
.ai-card p{color:rgba(255,255,255,0.75);font-size:15px;line-height:1.7}

/* ============ NEWS / ACTUALITÉS ============ */
.news-section{background:var(--bg-light)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  background:white;border-radius:16px;overflow:hidden;
  box-shadow:var(--shadow-sm);border:1px solid var(--gray-light);
  transition:all 0.3s;cursor:pointer
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.news-header{padding:20px 24px 0;display:flex;justify-content:space-between;align-items:center}
.news-tag{display:inline-block;padding:4px 12px;border-radius:20px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:0.5px}
.news-tag.tew{background:rgba(34,197,94,0.1);color:#16a34a}
.news-tag.banc{background:rgba(15,107,78,0.1);color:var(--emerald)}
.news-tag.crypt{background:rgba(212,165,116,0.15);color:var(--gold-dark)}
.news-date{font-size:12px;color:var(--gray)}
.news-card h3{font-size:17px;font-weight:700;padding:12px 24px 8px;color:var(--black);line-height:1.4}
.news-card p{padding:0 24px 20px;font-size:14px;color:var(--gray);line-height:1.6}
.news-footer{padding:16px 24px;border-top:1px solid var(--gray-light);display:flex;justify-content:space-between;align-items:center;background:var(--bg-light)}
.news-footer span{font-size:12px;color:var(--gray)}
.news-footer .change{font-weight:700}
.change.up{color:var(--green-success)}
.change.down{color:var(--red-warn)}

/* ============ PAIEMENTS ============ */
.payments{background:white}
.payments-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;margin-top:40px}
.payment-card{
  background:var(--bg-light);border:1px solid var(--gray-light);
  border-radius:12px;padding:20px;text-align:center;transition:all 0.3s
}
.payment-card:hover{border-color:var(--emerald);transform:translateY(-3px);box-shadow:var(--shadow-md)}
.payment-card .icon{font-size:32px;margin-bottom:8px}
.payment-card .name{font-size:13px;font-weight:600;color:var(--black)}
.payment-card .type{font-size:11px;color:var(--gray);margin-top:2px}

/* ============ CTA FINAL ============ */
.cta-final{
  background:linear-gradient(135deg,var(--emerald) 0%,var(--emerald-dark) 100%);
  color:white;text-align:center;padding:100px 0;position:relative;overflow:hidden
}
.cta-final h2{font-size:clamp(32px,5vw,52px);font-weight:900;margin-bottom:20px;letter-spacing:-1px}
.cta-final p{font-size:18px;color:rgba(255,255,255,0.85);margin-bottom:40px;max-width:600px;margin-left:auto;margin-right:auto}
.cta-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* ============ FOOTER ============ */
.site-footer{background:var(--black);color:white;padding:60px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand img{width:50px;height:50px;border-radius:10px;margin-bottom:16px}
.footer-brand h3{font-size:22px;margin-bottom:12px;color:var(--gold)}
.footer-brand p{color:rgba(255,255,255,0.6);font-size:14px;line-height:1.7}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:16px;text-transform:uppercase;letter-spacing:1px;color:var(--gold)}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{color:rgba(255,255,255,0.7);font-size:14px}
.footer-col ul li a:hover{color:var(--gold)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding-top:24px;text-align:center;color:rgba(255,255,255,0.5);font-size:13px}
.footer-bottom .socials{margin-bottom:16px;display:flex;justify-content:center;gap:16px}
.footer-bottom .socials a{width:40px;height:40px;background:rgba(255,255,255,0.05);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:18px}
.footer-bottom .socials a:hover{background:var(--gold);color:var(--black)}

/* ============ RESPONSIVE ============ */
@media(max-width:968px){
  .hero-grid,.pillars-grid,.ai-grid,.news-grid,.footer-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .payments-grid{grid-template-columns:repeat(3,1fr)}
  .nav{display:none}
  .hero{padding:60px 0 80px}
  section{padding:60px 0}
  .hero h1{font-size:36px}
}
@media(max-width:480px){
  .stats-grid{grid-template-columns:1fr}
  .payments-grid{grid-template-columns:repeat(2,1fr)}
  .hero-cta,.cta-buttons{flex-direction:column;width:100%}
  .btn-primary,.btn-secondary{width:100%;justify-content:center}
}

/* ============ ANIMATIONS ============ */
@keyframes fadeUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.hero h1,.hero p,.hero-cta,.section-title{animation:fadeUp 0.8s ease-out}
.pillar-card,.ai-card,.news-card,.payment-card{animation:fadeUp 0.6s ease-out both}
.pillar-card:nth-child(2){animation-delay:0.1s}
.pillar-card:nth-child(3){animation-delay:0.2s}