/* ============================================
   DRIVOLT — Feuille de style principale
   Palette carbone + accent volt (vert électrique)
   ============================================ */

:root{
  --void:#0a0e14;
  --carbon:#11161f;
  --slate:#1a212d;
  --line:#252d3a;
  --fog:#8b95a5;
  --frost:#e8ecf2;
  --white:#ffffff;
  --volt:#00e5a0;
  --volt-dim:#00b57e;
  --glow:rgba(0,229,160,0.14);
  --maxw:1180px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--void);
  color:var(--frost);
  font-family:'Inter',system-ui,sans-serif;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,.display{font-family:'Sora',sans-serif;letter-spacing:-0.02em;line-height:1.05}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- NAV ---------- */
header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  backdrop-filter:blur(14px);
  background:rgba(10,14,20,0.72);
  border-bottom:1px solid transparent;
  transition:border-color .4s var(--ease),background .4s var(--ease);
}
header.scrolled{border-bottom-color:var(--line);background:rgba(10,14,20,0.9)}
nav{display:flex;align-items:center;justify-content:space-between;height:72px;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.brand{display:flex;align-items:center}
.brand-logo{height:34px;width:auto;display:block}
.nav-links{display:flex;gap:8px;align-items:center}
.nav-links a{
  font-size:0.94rem;font-weight:500;color:var(--fog);
  padding:8px 16px;border-radius:8px;transition:color .25s,background .25s;
}
.nav-links a:hover{color:var(--white);background:var(--slate)}
.nav-links a.cta{
  color:var(--void);background:var(--volt);font-weight:600;
  box-shadow:0 0 0 0 var(--glow);transition:box-shadow .3s,transform .2s;
}
.nav-links a.cta:hover{background:var(--volt);box-shadow:0 8px 30px var(--glow);transform:translateY(-1px)}
.burger{display:none;background:none;border:0;cursor:pointer;padding:8px;flex-direction:column;gap:5px}
.burger span{width:24px;height:2px;background:var(--frost);border-radius:2px;transition:.3s}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- HERO ---------- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden}
.hero-grid{
  position:absolute;inset:0;z-index:0;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 80% 60% at 70% 40%,#000 20%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 70% 40%,#000 20%,transparent 75%);
  opacity:.5;
}
.hero-glow{
  position:absolute;z-index:0;width:900px;height:900px;border-radius:50%;
  right:-15%;top:-25%;
  background:radial-gradient(circle,var(--glow) 0%,transparent 62%);
  pointer-events:none;
}
.hero .wrap{position:relative;z-index:2;width:100%}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:0.8rem;font-weight:600;letter-spacing:0.08em;text-transform:uppercase;
  color:var(--volt);margin-bottom:28px;
  padding:7px 14px;border:1px solid var(--line);border-radius:100px;background:var(--carbon);
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--volt);box-shadow:0 0 10px var(--volt);animation:pulse 2.4s var(--ease) infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.8)}}
.hero h1{font-size:clamp(2.7rem,7vw,5.2rem);font-weight:800;max-width:15ch;margin-bottom:26px}
.hero h1 .accent{
  background:linear-gradient(120deg,var(--volt),#4dffc4);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.hero p.lead{font-size:clamp(1.05rem,2vw,1.3rem);color:var(--fog);max-width:52ch;margin-bottom:40px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- BOUTONS ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:15px 28px;border-radius:12px;font-weight:600;font-size:1rem;
  cursor:pointer;border:1px solid transparent;transition:transform .2s var(--ease),box-shadow .3s,background .3s;
}
.btn-primary{background:var(--volt);color:var(--void);box-shadow:0 10px 40px -8px var(--glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 50px -6px var(--glow)}
.btn-ghost{background:transparent;color:var(--frost);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--volt);color:var(--white);background:var(--carbon)}
.btn svg{width:18px;height:18px}

.hero-stats{display:flex;gap:40px;margin-top:64px;flex-wrap:wrap}
.hero-stats .stat .n{font-family:'Sora';font-weight:700;font-size:1.8rem;color:var(--white)}
.hero-stats .stat .l{font-size:0.85rem;color:var(--fog)}

/* ---------- SECTION SHELL ---------- */
section.block{padding:120px 0;position:relative}
.sec-head{max-width:640px;margin-bottom:60px}
.sec-tag{font-size:0.8rem;font-weight:600;letter-spacing:0.1em;text-transform:uppercase;color:var(--volt);display:block;margin-bottom:16px}
.sec-head h2{font-size:clamp(2rem,4vw,3rem);font-weight:700;margin-bottom:18px}
.sec-head p{color:var(--fog);font-size:1.1rem}

/* ---------- ATOUTS ---------- */
#atouts{background:linear-gradient(180deg,var(--void),var(--carbon))}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feat{
  background:var(--carbon);border:1px solid var(--line);border-radius:18px;padding:34px 30px;
  transition:transform .35s var(--ease),border-color .35s,background .35s;position:relative;overflow:hidden;
}
.feat::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--volt),transparent);
  transform:translateX(-100%);transition:transform .6s var(--ease);
}
.feat:hover{transform:translateY(-6px);border-color:#33404f;background:var(--slate)}
.feat:hover::before{transform:translateX(0)}
.feat-ic{
  width:48px;height:48px;border-radius:12px;background:var(--glow);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;margin-bottom:22px;color:var(--volt);
}
.feat-ic svg{width:24px;height:24px}
.feat h3{font-size:1.25rem;font-weight:600;margin-bottom:10px}
.feat p{color:var(--fog);font-size:0.97rem}

/* ---------- SHOP ---------- */
#shop .shop-card{
  position:relative;border:1px solid var(--line);border-radius:24px;overflow:hidden;
  background:
    radial-gradient(ellipse 60% 100% at 85% 50%,var(--glow),transparent 70%),
    var(--carbon);
  padding:72px 60px;
}
.shop-card .grid-lines{
  position:absolute;inset:0;z-index:0;opacity:.4;
  background-image:linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:56px 100%;
  mask-image:linear-gradient(90deg,transparent,#000 60%);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 60%);
}
.shop-card>*{position:relative;z-index:1}
.shop-card h2{font-size:clamp(2rem,4vw,2.9rem);font-weight:700;max-width:16ch;margin-bottom:18px}
.shop-card p{color:var(--fog);font-size:1.1rem;max-width:46ch;margin-bottom:34px}
.chips{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:40px}
.chip{font-size:0.85rem;color:var(--frost);background:var(--slate);border:1px solid var(--line);padding:8px 15px;border-radius:100px}
.chip b{color:var(--volt)}

/* ---------- CONTACT ---------- */
#contact{background:linear-gradient(180deg,var(--carbon),var(--void))}
.contact-layout{display:grid;grid-template-columns:1fr 1.15fr;gap:64px;align-items:start}
.contact-copy h2{font-size:clamp(2rem,4vw,2.8rem);font-weight:700;margin-bottom:20px}
.contact-copy p{color:var(--fog);font-size:1.08rem;margin-bottom:32px}
.contact-info{display:flex;flex-direction:column;gap:18px}
.ci-row{display:flex;align-items:center;gap:14px;color:var(--frost)}
.ci-row .ci-ic{width:42px;height:42px;border-radius:11px;background:var(--carbon);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--volt);flex-shrink:0}
.ci-row .ci-ic svg{width:20px;height:20px}
.ci-row .ci-t small{display:block;color:var(--fog);font-size:0.82rem}
.ci-row .ci-t a,.ci-row .ci-t span{font-weight:500;font-size:1rem}

form{background:var(--carbon);border:1px solid var(--line);border-radius:20px;padding:38px}
.field{margin-bottom:20px}
.field label{display:block;font-size:0.88rem;font-weight:500;color:var(--frost);margin-bottom:8px}
.field input,.field textarea{
  width:100%;background:var(--void);border:1px solid var(--line);border-radius:11px;
  padding:13px 16px;color:var(--frost);font-family:inherit;font-size:0.98rem;transition:border-color .25s,box-shadow .25s;
}
.field input::placeholder,.field textarea::placeholder{color:#5a6472}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--volt);box-shadow:0 0 0 3px var(--glow)}
.field textarea{resize:vertical;min-height:130px}
.hp{display:none}
form .btn-primary{width:100%;justify-content:center;font-size:1.02rem}
.form-note{font-size:0.82rem;color:var(--fog);margin-top:16px;text-align:center}
.form-status{margin-top:16px;padding:13px 16px;border-radius:11px;font-size:0.92rem;display:none}
.form-status.ok{display:block;background:var(--glow);border:1px solid var(--volt-dim);color:var(--volt)}
.form-status.err{display:block;background:rgba(255,90,90,.1);border:1px solid rgba(255,90,90,.4);color:#ff8080}

/* ---------- FOOTER ---------- */
footer{border-top:1px solid var(--line);padding:50px 0 40px}
.foot-top{display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap;margin-bottom:34px}
.foot-links{display:flex;gap:26px;flex-wrap:wrap}
.foot-links a{color:var(--fog);font-size:0.92rem;transition:color .2s}
.foot-links a:hover{color:var(--volt)}
.foot-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:24px;border-top:1px solid var(--line);color:#5a6472;font-size:0.83rem}
.foot-disclaimer{max-width:60ch}

/* ---------- REVEAL ANIMATION ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- RESPONSIVE ---------- */
@media(max-width:900px){
  .feat-grid{grid-template-columns:1fr}
  .contact-layout{grid-template-columns:1fr;gap:40px}
  #shop .shop-card{padding:48px 30px}
}
@media(max-width:720px){
  .nav-links{
    position:fixed;top:72px;left:0;right:0;flex-direction:column;gap:4px;
    background:var(--carbon);border-bottom:1px solid var(--line);padding:16px 24px;
    transform:translateY(-140%);transition:transform .4s var(--ease);align-items:stretch;
  }
  .nav-links.open{transform:translateY(0)}
  .nav-links a{padding:13px 16px}
  .nav-links a.cta{text-align:center;justify-content:center;margin-top:6px}
  .burger{display:flex}
  .hero-stats{gap:26px}
  section.block{padding:80px 0}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}