:root{
  --bg:#080809;
  --bg-2:#0f1014;
  --panel:#14151b;
  --panel-2:#1c1d25;
  --red:#e10600;
  --red-2:#ff1f1f;
  --red-glow:rgba(225,6,0,.55);
  --blue:#0a84ff;
  --blue-2:#3aa0ff;
  --text:#eef0f4;
  --muted:#9aa0ad;
  --line:rgba(255,255,255,.08);
  --grad:linear-gradient(135deg,#e10600 0%,#7a0000 100%);
  --grad-blue:linear-gradient(135deg,#0a84ff,#003a80);
  --shadow:0 20px 60px rgba(0,0,0,.6);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Rajdhani',system-ui,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.55;
  overflow-x:hidden;
  font-size:17px;
}
h1,h2,h3,h4,.logo-text,.price,.kicker{font-family:'Orbitron',sans-serif;letter-spacing:.5px}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

.container{max-width:1240px;margin:0 auto;padding:0 24px}

#bg-canvas{position:fixed;inset:0;z-index:-1;width:100vw;height:100vh;opacity:.6}

/* NAVBAR */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:50;
  backdrop-filter:blur(14px);
  background:rgba(8,8,9,.65);
  border-bottom:1px solid var(--line);
  transition:.3s;
}
.navbar.scrolled{background:rgba(8,8,9,.92);box-shadow:0 6px 30px rgba(0,0,0,.5)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:12px;font-weight:700}
.logo-mark{
  display:grid;place-items:center;
  width:42px;height:42px;
  background:var(--grad);
  color:#fff;font-family:'Orbitron';font-weight:900;
  border-radius:10px;
  box-shadow:0 0 20px var(--red-glow);
  transform:skewX(-8deg);
}
.logo-mark.small{width:32px;height:32px;font-size:14px}
.logo-text{font-size:20px}
.logo-text em{color:var(--red);font-style:normal}
.nav-list{display:flex;gap:8px;list-style:none;align-items:center}
.nav-list a{
  padding:10px 14px;border-radius:8px;
  color:var(--muted);font-weight:600;font-size:15px;
  transition:.2s;
}
.nav-list a:hover{color:#fff;background:rgba(255,255,255,.05)}
.btn-nav{background:var(--grad);color:#fff !important;box-shadow:0 0 18px var(--red-glow)}
.btn-nav:hover{transform:translateY(-2px)}
.nav-toggle{display:none;background:none;border:0;color:#fff;font-size:24px;cursor:pointer}

/* BUTTONS */
.btn{
  display:inline-block;padding:14px 26px;
  border-radius:10px;font-weight:700;
  font-family:'Orbitron';font-size:14px;letter-spacing:1px;
  text-transform:uppercase;cursor:pointer;border:0;
  transition:.25s ease;
  position:relative;overflow:hidden;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 24px var(--red-glow)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 32px var(--red-glow)}
.btn-ghost{background:transparent;color:#fff;border:1px solid var(--red)}
.btn-ghost:hover{background:var(--red);box-shadow:0 8px 24px var(--red-glow)}
.btn-block{width:100%}

/* HERO */
.hero{
  min-height:100vh;
  position:relative;
  display:flex;align-items:center;
  padding-top:80px;
  overflow:hidden;
}
.hero-bg-grid{
  position:absolute;inset:0;
  background:
    radial-gradient(ellipse at 20% 30%,rgba(225,6,0,.25),transparent 50%),
    radial-gradient(ellipse at 80% 70%,rgba(10,132,255,.18),transparent 50%),
    linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px) 0 0/40px 40px,
    linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px) 0 0/40px 40px;
  z-index:-1;
}
.hero-inner{display:grid;grid-template-columns:1.2fr 1fr;gap:60px;align-items:center;padding:60px 24px}
.tag{
  display:inline-block;padding:8px 16px;
  background:rgba(225,6,0,.12);
  border:1px solid var(--red);
  color:var(--red-2);
  border-radius:30px;font-weight:600;font-size:13px;letter-spacing:1px;
  text-transform:uppercase;margin-bottom:24px;
  animation:pulse 2s infinite;
}
@keyframes pulse{50%{box-shadow:0 0 0 6px rgba(225,6,0,.0)}0%,100%{box-shadow:0 0 0 0 rgba(225,6,0,.6)}}
.hero h1{
  font-size:clamp(38px,5.5vw,68px);
  line-height:1.05;font-weight:900;
  margin-bottom:20px;
}
.accent{color:var(--red);text-shadow:0 0 30px var(--red-glow)}
.accent-blue{color:var(--blue-2);text-shadow:0 0 30px rgba(10,132,255,.5)}
.lead{color:var(--muted);font-size:19px;max-width:560px;margin-bottom:32px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:48px}
.hero-stats{display:flex;gap:36px;flex-wrap:wrap}
.hero-stats div{display:flex;flex-direction:column}
.hero-stats strong{font-family:'Orbitron';font-size:34px;color:#fff}
.hero-stats span{color:var(--muted);font-size:13px;text-transform:uppercase;letter-spacing:1px}

/* RPM Gauge */
.hero-visual{display:grid;place-items:center;position:relative}
.gauges-wrap{display:flex;flex-direction:column;align-items:center;gap:22px;width:100%}
.rpm-gauge{position:relative;width:260px;height:260px;max-width:100%}
.rpm-dial{
  position:absolute;inset:0;border-radius:50%;
  background:
    conic-gradient(from 135deg, #1a1a1f 0deg, #2a2a30 180deg, #5a0000 240deg, var(--red) 280deg, #ff3333 310deg, #1a1a1f 360deg);
  box-shadow:
    inset 0 0 60px rgba(0,0,0,.8),
    0 0 80px var(--red-glow),
    0 20px 60px rgba(0,0,0,.6);
  display:grid;place-items:center;
  animation:rotateIn 1.2s ease;
}
.rpm-dial::before{
  content:"";position:absolute;inset:18px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,#1c1c22,#000);
  border:2px solid rgba(255,255,255,.05);
}
.rpm-needle{
  position:absolute;left:50%;bottom:50%;
  width:4px;height:42%;
  background:linear-gradient(to top,var(--red),#fff);
  transform-origin:bottom center;
  transform:translateX(-50%) rotate(-135deg);
  border-radius:4px;
  box-shadow:0 0 20px var(--red-glow);
  transition:transform .15s linear;
  z-index:2;
}
.rpm-center{
  position:relative;z-index:1;text-align:center;
  display:flex;flex-direction:column;
}
.rpm-val{font-family:'Orbitron';font-size:38px;font-weight:900;color:#fff;text-shadow:0 0 20px var(--red-glow)}
.rpm-unit{color:var(--red-2);letter-spacing:3px;font-weight:700;font-size:11px}

/* Boost / Turbo gauge */
.boost-gauge{
  width:100%;max-width:320px;
  background:linear-gradient(180deg,var(--panel),var(--panel-2));
  border:1px solid var(--line);border-radius:14px;
  padding:14px 18px;
  box-shadow:0 10px 30px rgba(0,0,0,.4);
}
.boost-label{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:8px}
.boost-title{font-family:'Orbitron';font-size:12px;letter-spacing:3px;color:var(--red-2)}
.boost-val{font-family:'Orbitron';font-size:20px;font-weight:900;color:#fff;text-shadow:0 0 12px var(--red-glow)}
.boost-val small{font-size:11px;color:var(--muted);letter-spacing:2px;margin-left:2px}
.boost-bar{
  position:relative;height:14px;border-radius:10px;
  background:#0a0b10;border:1px solid rgba(255,255,255,.06);
  overflow:hidden;
}
.boost-fill{
  position:absolute;inset:0;width:0%;
  background:linear-gradient(90deg,#0a84ff 0%,#22c55e 35%,#eab308 65%,var(--red) 85%,#ff3333 100%);
  box-shadow:0 0 18px var(--red-glow);
  transition:width .12s linear;
  border-radius:10px 0 0 10px;
}
.boost-ticks{position:absolute;inset:0;display:flex;justify-content:space-between;padding:0 2px;pointer-events:none}
.boost-ticks span{width:1px;height:100%;background:rgba(255,255,255,.12)}
.boost-scale{display:flex;justify-content:space-between;margin-top:6px;color:var(--muted);font-size:10px;letter-spacing:1px;font-family:'Orbitron'}
.redline-glow{
  position:absolute;inset:-30px;border-radius:50%;
  background:radial-gradient(circle,var(--red-glow),transparent 70%);
  z-index:-1;animation:breathe 3s ease-in-out infinite;
}
@keyframes breathe{50%{transform:scale(1.1);opacity:.7}}
@keyframes rotateIn{from{transform:rotate(-30deg) scale(.8);opacity:0}to{transform:rotate(0) scale(1);opacity:1}}

.scroll-indicator{
  position:absolute;bottom:24px;left:50%;transform:translateX(-50%);
  color:var(--red);font-size:20px;
  animation:bounce 1.6s infinite;
}
@keyframes bounce{50%{transform:translate(-50%,12px)}}

/* SECTIONS */
.section{padding:110px 0;position:relative}
.section-alt{background:linear-gradient(180deg,transparent,#0c0d12,transparent)}
.section-head{text-align:center;max-width:760px;margin:0 auto 60px}
.kicker{
  display:inline-block;padding:6px 14px;
  background:rgba(225,6,0,.1);border:1px solid rgba(225,6,0,.3);
  color:var(--red-2);border-radius:30px;
  font-size:12px;text-transform:uppercase;margin-bottom:18px;
}
.section-head h2{font-size:clamp(32px,4vw,52px);font-weight:900;margin-bottom:14px}
.section-head p{color:var(--muted);font-size:18px}

/* CARDS */
.cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cards-grid.grid-5{grid-template-columns:repeat(5,1fr)}
.card{
  background:linear-gradient(180deg,var(--panel),var(--panel-2));
  border:1px solid var(--line);
  border-radius:16px;padding:34px 28px;
  position:relative;overflow:hidden;
  transition:.3s;
}
.card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--grad);transform:scaleX(0);transform-origin:left;
  transition:.4s;
}
.card:hover{transform:translateY(-8px);border-color:var(--red);box-shadow:0 20px 50px rgba(225,6,0,.2)}
.card:hover::before{transform:scaleX(1)}
.card-icon{font-size:40px;margin-bottom:18px;filter:drop-shadow(0 0 10px var(--red-glow))}
.card h3,.card h4{font-size:22px;margin-bottom:12px;color:#fff}
.card.mini h4{font-size:18px}
.card p{color:var(--muted);margin-bottom:14px;font-size:15px}
.card ul{list-style:none;padding:0}
.card ul li{padding:6px 0;color:#cfd2da;font-size:15px;border-bottom:1px dashed var(--line)}
.card ul li::before{content:"⚡ ";color:var(--red)}

/* PRICING */
.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:60px}
.price-card{
  background:linear-gradient(180deg,var(--panel),#0a0b10);
  border:1px solid var(--line);border-radius:18px;
  padding:36px 30px;text-align:center;position:relative;
  transition:.3s;
}
.price-card:hover{transform:translateY(-6px);border-color:var(--red)}
.price-card.featured{
  border-color:var(--red);
  box-shadow:0 0 0 1px var(--red),0 20px 60px var(--red-glow);
  transform:scale(1.04);
}
.price-badge{
  position:absolute;top:-14px;left:50%;transform:translateX(-50%);
  background:var(--grad);color:#fff;
  padding:6px 18px;border-radius:30px;font-size:12px;font-weight:700;
  letter-spacing:1px;text-transform:uppercase;
}
.price-card h3{font-size:26px;margin-bottom:14px}
.price{font-size:48px;font-weight:900;color:var(--red);margin-bottom:24px}
.price span{font-size:14px;color:var(--muted);font-family:'Rajdhani'}
.price-card ul{list-style:none;text-align:left;margin-bottom:28px}
.price-card ul li{padding:10px 0;border-bottom:1px solid var(--line);color:#cfd2da}

.subtitle{
  font-family:'Orbitron';font-size:24px;text-align:center;
  margin:40px 0 28px;color:#fff;
}
.options-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:24px}
.opt{
  display:flex;justify-content:space-between;align-items:center;
  background:var(--panel);border:1px solid var(--line);
  padding:16px 18px;border-radius:10px;transition:.25s;
}
.opt:hover{border-color:var(--red);background:var(--panel-2);transform:translateX(4px)}
.opt span{font-weight:600;color:#dadde4}
.opt strong{color:var(--red);font-family:'Orbitron'}
.notice{text-align:center;color:var(--muted);font-size:14px;margin-top:20px;font-style:italic}

/* SIMULATOR */
.simulator{
  display:grid;grid-template-columns:1fr 1.4fr;gap:30px;
  background:linear-gradient(180deg,var(--panel),var(--panel-2));
  border:1px solid var(--line);border-radius:20px;
  padding:34px;
}
.sim-controls{display:flex;flex-direction:column;gap:22px}
.sim-row{display:flex;flex-direction:column;gap:14px}
.sim-row label{display:flex;flex-direction:column;gap:8px;font-weight:600;color:#cfd2da;font-size:14px}
.sim-row select{
  background:var(--bg-2);border:1px solid var(--line);color:#fff;
  padding:12px 14px;border-radius:10px;font-family:inherit;font-size:15px;
  cursor:pointer;transition:.2s;
}
.sim-row select:focus{outline:0;border-color:var(--red);box-shadow:0 0 0 3px var(--red-glow)}
.sim-row select:disabled{opacity:.4;cursor:not-allowed}
.toggle-stage{align-items:flex-start}
.seg{display:flex;background:var(--bg-2);border-radius:10px;padding:4px;border:1px solid var(--line);width:100%}
.seg button{
  flex:1;background:none;border:0;color:var(--muted);
  padding:10px 8px;font-family:'Orbitron';font-size:13px;
  cursor:pointer;border-radius:8px;transition:.25s;
}
.seg button:hover{color:#fff}
.seg button.active{background:var(--grad);color:#fff;box-shadow:0 4px 12px var(--red-glow)}

.sim-readout{
  display:grid;grid-template-columns:1fr 1fr;gap:10px;
  background:var(--bg-2);padding:16px;border-radius:12px;
  border:1px solid var(--line);
}
.sim-readout > div{display:flex;flex-direction:column;padding:8px 10px;border-radius:8px}
.sim-readout span{color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:1px}
.sim-readout strong{font-family:'Orbitron';font-size:20px;color:#fff}
.sim-readout .gain strong{color:var(--red-2)}
.sim-readout .plus{grid-column:1/-1;background:rgba(225,6,0,.1);border:1px solid rgba(225,6,0,.3)}
.sim-readout .plus strong{color:#fff;font-size:18px}

.sim-chart{position:relative}
.dyno-frame{
  background:#05060a;border:1px solid var(--line);
  border-radius:14px;padding:18px;
  box-shadow:inset 0 0 60px rgba(225,6,0,.08);
  height:100%;min-height:420px;display:flex;flex-direction:column;
}
.dyno-label{
  font-family:'Orbitron';font-size:11px;letter-spacing:3px;
  color:var(--red);margin-bottom:8px;
}
#dynoChart{flex:1;width:100%;}

/* SIMULATOR — Résultat, tableau, placeholder */
.sim-hint{
  color:var(--muted);font-size:13px;margin-top:6px;font-style:italic;
}
.sim-result{
  background:var(--bg-2);border:1px solid var(--line);
  border-radius:14px;padding:24px;min-height:320px;
  display:flex;flex-direction:column;justify-content:center;
  position:relative;overflow:hidden;
}
.sim-result::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(circle at 20% 0%,rgba(225,6,0,.10),transparent 55%),
    radial-gradient(circle at 100% 100%,rgba(10,132,255,.08),transparent 55%);
  pointer-events:none;
}
.sim-placeholder{
  text-align:center;color:var(--muted);position:relative;z-index:1;
}
.sim-placeholder-icon{
  font-size:52px;margin-bottom:14px;
  filter:drop-shadow(0 0 20px var(--red-glow));
  animation:breathe 3s ease-in-out infinite;
}
.sim-placeholder p{font-size:15px;max-width:340px;margin:0 auto}

.sim-title{
  display:flex;flex-direction:column;gap:4px;margin-bottom:18px;
  position:relative;z-index:1;
}
.sim-title-brand{
  font-family:'Orbitron';font-size:12px;letter-spacing:3px;
  color:var(--red-2);text-transform:uppercase;
}
.sim-title-model{
  font-family:'Orbitron';font-size:20px;color:#fff;font-weight:700;
}

.sim-table-wrap{overflow-x:auto;position:relative;z-index:1;margin-bottom:14px}
.sim-table{
  width:100%;border-collapse:separate;border-spacing:0;
  font-family:'Rajdhani';font-size:15px;
}
.sim-table th{
  text-align:left;padding:12px 14px;
  font-family:'Orbitron';font-size:11px;letter-spacing:2px;
  color:var(--muted);text-transform:uppercase;
  border-bottom:1px solid var(--line);background:transparent;
}
.sim-table td{
  padding:14px;border-bottom:1px solid var(--line);
  color:#eef0f4;font-weight:600;
}
.sim-table tbody tr{transition:background .2s}
.sim-table tbody tr:hover{background:rgba(225,6,0,.05)}
.sim-table tbody tr:last-child td{border-bottom:0}
.sim-row-orig td{color:#cfd2da}
.sim-row-s1 td strong{color:var(--red-2)}
.sim-row-s2 td strong{
  color:#fff;
  background:var(--grad);
  padding:3px 10px;border-radius:6px;
  display:inline-block;font-size:13px;letter-spacing:1px;
  box-shadow:0 4px 12px var(--red-glow);
}
.sim-gain{
  font-family:'Orbitron';font-size:13px;font-weight:700;
  padding:3px 8px;border-radius:6px;
}
.sim-gain.pos{color:#4ade80;background:rgba(74,222,128,.10);border:1px solid rgba(74,222,128,.25)}
.sim-gain.neg{color:#f87171;background:rgba(248,113,113,.10);border:1px solid rgba(248,113,113,.25)}
.sim-gain.neutral{color:var(--muted);background:transparent;border:0;padding:0}

.sim-note{
  color:var(--muted);font-size:13px;font-style:italic;
  padding:10px 14px;background:rgba(10,132,255,.06);
  border-left:3px solid var(--blue);border-radius:6px;
  margin-bottom:14px;position:relative;z-index:1;
}
.sim-cta{align-self:flex-start;position:relative;z-index:1;margin-top:4px}

/* FILE SERVICE */
.fs-wrap{display:grid;grid-template-columns:1fr 1.3fr;gap:40px}
.fs-steps{display:flex;flex-direction:column;gap:18px}
.step{
  background:var(--panel);border:1px solid var(--line);
  border-radius:14px;padding:24px;position:relative;
  padding-left:74px;transition:.3s;
}
.step:hover{transform:translateX(6px);border-color:var(--red)}
.step span{
  position:absolute;left:18px;top:24px;
  width:40px;height:40px;border-radius:10px;
  background:var(--grad);color:#fff;
  display:grid;place-items:center;
  font-family:'Orbitron';font-size:18px;font-weight:900;
  box-shadow:0 0 20px var(--red-glow);
}
.step h4{margin-bottom:6px;color:#fff}
.step p{color:var(--muted);font-size:15px}

.fs-form,.contact-form{
  background:linear-gradient(180deg,var(--panel),var(--panel-2));
  border:1px solid var(--line);border-radius:16px;
  padding:32px;display:flex;flex-direction:column;gap:16px;
}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.fs-form label,.contact-form label{display:flex;flex-direction:column;gap:6px;color:#cfd2da;font-weight:600;font-size:14px}
.fs-form input,.fs-form select,.fs-form textarea,
.contact-form input,.contact-form textarea{
  background:var(--bg-2);border:1px solid var(--line);color:#fff;
  padding:12px 14px;border-radius:10px;font-family:inherit;font-size:15px;
  transition:.2s;resize:vertical;
}
.fs-form input:focus,.fs-form textarea:focus,.fs-form select:focus,
.contact-form input:focus,.contact-form textarea:focus{
  outline:0;border-color:var(--red);box-shadow:0 0 0 3px var(--red-glow);
}
.filezone{position:relative;cursor:pointer}
.filezone input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer}
.filezone-inner{
  border:2px dashed rgba(225,6,0,.4);border-radius:12px;
  padding:30px;text-align:center;background:rgba(225,6,0,.04);
  transition:.25s;
}
.filezone:hover .filezone-inner{border-color:var(--red);background:rgba(225,6,0,.1)}
.filezone.has-file .filezone-inner{border-color:#22c55e;background:rgba(34,197,94,.12);color:#22c55e}
.filezone.has-file .fz-icon{filter:drop-shadow(0 0 6px rgba(34,197,94,.6))}
.filezone.has-error .filezone-inner{border-color:#ff3333;background:rgba(255,51,51,.12);color:#ff3333}
.filezone.has-error .fz-icon{filter:drop-shadow(0 0 6px rgba(255,51,51,.6))}
.fz-icon{font-size:34px;display:block;margin-bottom:10px}
.fz-hint{display:block;color:var(--muted);font-size:13px;margin-top:6px;font-weight:400}
.fs-note{color:var(--muted);font-size:13px;text-align:center;margin-top:6px}

/* CONTACT */
.contact-grid{display:grid;grid-template-columns:1fr 1.3fr;gap:30px}
.contact-info{
  background:linear-gradient(180deg,var(--panel),var(--panel-2));
  border:1px solid var(--line);border-radius:16px;padding:32px;
}
.contact-info h3{font-size:24px;margin-bottom:18px;color:var(--red)}
.contact-info p{margin-bottom:12px;color:#cfd2da}
.contact-info a:hover{color:var(--red)}
.socials{display:flex;gap:12px;margin-top:20px}
.socials a{
  width:42px;height:42px;border-radius:10px;
  background:var(--bg-2);border:1px solid var(--line);
  display:grid;place-items:center;font-size:18px;transition:.25s;
}
.socials a:hover{background:var(--grad);transform:translateY(-3px);border-color:transparent}

/* FOOTER */
.footer{
  background:#05060a;border-top:1px solid var(--line);
  padding:50px 0 30px;margin-top:60px;
}
.footer-inner{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center}
.footer-inner > div:first-child{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.footer-inner p{color:var(--muted);font-size:14px;width:100%;margin-top:6px}
.footer-links{display:flex;gap:18px;flex-wrap:wrap;justify-content:flex-end}
.footer-links a{color:var(--muted);font-size:14px;transition:.2s}
.footer-links a:hover{color:var(--red)}
.legal{grid-column:1/-1;text-align:center;color:#5a5e69;font-size:12px;margin-top:20px;font-style:italic}

/* REVEAL ANIM */
.reveal{opacity:0;transform:translateY(40px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:none}

/* RESPONSIVE */
@media(max-width:1100px){
  .cards-grid.grid-5{grid-template-columns:repeat(3,1fr)}
  .options-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:980px){
  .container{padding:0 20px}
  .hero{padding-top:72px;min-height:auto}
  .hero-inner{grid-template-columns:1fr;gap:36px;text-align:center;padding:40px 20px}
  .hero-text .tag,.hero-cta,.hero-stats{justify-content:center}
  .hero-stats{justify-content:center;flex-wrap:wrap;gap:18px}
  .cards-grid,.cards-grid.grid-5,.pricing-grid{grid-template-columns:1fr 1fr}
  .options-grid{grid-template-columns:1fr 1fr}
  .simulator,.fs-wrap,.contact-grid{grid-template-columns:1fr}
  .simulator{padding:24px}
  .footer-inner{grid-template-columns:1fr;text-align:center}
  .footer-links{justify-content:center}
  .section{padding:80px 0}
  .section-head{margin-bottom:44px}
  .price-card.featured{transform:none}
}
@media(max-width:768px){
  body{font-size:16px}
  .container{padding:0 16px}
  .nav-toggle{display:block;padding:6px 10px}
  .nav-inner{height:64px}
  .hero{padding-top:64px}
  .nav-list{
    position:fixed;top:64px;left:0;right:0;
    flex-direction:column;background:rgba(8,8,9,.98);
    padding:18px;gap:4px;border-bottom:1px solid var(--line);
    transform:translateY(-150%);transition:transform .3s ease;
    max-height:calc(100vh - 64px);overflow-y:auto;
    box-shadow:0 10px 30px rgba(0,0,0,.5);
  }
  .nav-list.open{transform:translateY(0)}
  .nav-list a{display:block;padding:14px 16px;font-size:16px;border-radius:10px}
  .nav-list .btn-nav{margin-top:8px;text-align:center}
  .logo-text{font-size:17px}
  .logo-img{height:36px}
  .cards-grid,.cards-grid.grid-5,.pricing-grid,.options-grid,.row2{grid-template-columns:1fr}
  .card{padding:26px 22px}
  .card h3,.card h4{font-size:20px}
  .price-card{padding:28px 22px}
  .price{font-size:40px}
  .rpm-gauge{width:220px;height:220px}
  .rpm-val{font-size:30px}
  .boost-gauge{max-width:100%}
  .section{padding:64px 0}
  .section-head{margin-bottom:36px}
  .section-head p{font-size:16px}
  .fs-form,.contact-form,.contact-info{padding:22px}
  .simulator{padding:18px;border-radius:16px}
  .sim-readout{grid-template-columns:1fr 1fr;padding:12px;gap:8px}
  .sim-readout strong{font-size:17px}
  .sim-title-model{font-size:17px}
  .sim-table{font-size:14px}
  .sim-table th,.sim-table td{padding:10px 8px}
  .dyno-frame{min-height:340px;padding:14px}
  .filezone-inner{padding:22px 14px}
  .btn{padding:13px 22px;font-size:13px}
  .btn-block-mobile{width:100%}
  .hero-cta{flex-direction:column;align-items:stretch;width:100%;max-width:320px;margin:0 auto}
  .hero-cta .btn{width:100%}
  .footer{padding:40px 0 24px;margin-top:40px}
  .footer-links{gap:14px}
}
@media(max-width:480px){
  body{font-size:15.5px}
  .container{padding:0 14px}
  .hero-inner{padding:24px 14px;gap:28px}
  .tag{font-size:11px;padding:6px 12px;margin-bottom:18px}
  .rpm-gauge{width:190px;height:190px}
  .rpm-val{font-size:26px}
  .rpm-unit{font-size:10px;letter-spacing:2px}
  .section{padding:52px 0}
  .section-head{margin-bottom:28px}
  .section-head p{font-size:15px}
  .card-icon{font-size:34px}
  .price{font-size:36px}
  .price-badge{font-size:11px;padding:5px 14px}
  .socials a{width:38px;height:38px;font-size:16px}
  .scroll-indicator{display:none}
  .sim-readout{grid-template-columns:1fr}
  .footer-links{flex-direction:column;gap:10px}

  /* Simulateur — vue mobile simplifiée en cartes empilées */
  .simulator{padding:14px;border-radius:14px}
  .sim-title{margin-bottom:14px}
  .sim-title-brand{font-size:12px}
  .sim-title-model{font-size:16px}
  .sim-table-wrap{overflow:visible;margin-bottom:12px}
  .sim-table,.sim-table thead,.sim-table tbody,.sim-table tr,.sim-table th,.sim-table td{display:block;width:100%;box-sizing:border-box}
  .sim-table thead{display:none}
  .sim-table tbody tr{
    background:rgba(255,255,255,.02);
    border:1px solid rgba(255,255,255,.08);
    border-radius:12px;
    padding:12px 14px;
    margin-bottom:10px;
  }
  .sim-table tbody tr:hover{background:rgba(255,255,255,.02)}
  .sim-table td{
    border:0 !important;
    padding:6px 0 !important;
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:12px;
    font-size:14px;
    text-align:right;
  }
  .sim-table td::before{
    content:attr(data-label);
    color:var(--muted);
    font-size:12px;
    text-transform:uppercase;
    letter-spacing:1px;
    font-weight:600;
    text-align:left;
    flex:0 0 auto;
  }
  .sim-table td:first-child{
    justify-content:flex-start;
    padding-bottom:8px !important;
    margin-bottom:4px;
    border-bottom:1px solid rgba(255,255,255,.08) !important;
  }
  .sim-table td:first-child::before{display:none}
  .sim-table td:first-child strong{font-size:15px}
  .sim-row-s2 td:first-child strong{color:#fbbf24}
  .sim-gain{display:inline-flex;font-size:12px;padding:3px 8px}
  .sim-table td:last-child{flex-wrap:wrap;justify-content:flex-end}
  .sim-cta{align-self:stretch;text-align:center;width:100%}
  .sim-note{font-size:13px}
}
/* Touch devices: neutralise les effets hover accrocheurs */
@media(hover:none){
  .card:hover,.price-card:hover,.opt:hover,.btn-primary:hover,.btn-ghost:hover,
  .socials a:hover,.nav-list a:hover{transform:none}
  .btn:hover::after{left:-100%}
}

.dyno-frame {
  height: clamp(320px, 55vw, 450px); /* Hauteur fluide selon la largeur */
  display: flex;
  flex-direction: column;
}

.chart-wrapper {
  position: relative; /* OBLIGATOIRE pour Chart.js */
  flex: 1; /* Prend l'espace restant */
  width: 100%;
  min-height: 0; /* Empêche le flexbox de s'étirer à l'infini */
}

.file-zone {
    transition: all 0.3s ease;
    cursor: pointer;
    text-align: center;
    padding: 20px;
    border: 2px dashed var(--line);
}

.file-zone:hover {
    border-color: var(--red);
    background: rgba(225, 6, 0, 0.05);
}

#fzName {
    display: block;
    pointer-events: none; /* Évite de bloquer le clic sur l'input */
    word-break: break-all; /* Pour les noms de fichiers très longs */
}

/* Style pour le logo dans la barre de navigation */
.logo-img {
    height: 45px; /* Ajuste la hauteur selon tes préférences */
    width: auto;
    margin-right: 10px;
    vertical-align: middle;
}

/* Style pour le logo dans le footer */
.logo-img-small {
    height: 30px;
    width: auto;
    margin-bottom: 10px;
    display: block;
}

/* On peut supprimer l'ancien style .logo-mark s'il n'est plus utilisé */
.logo-mark {
    display: none;
}

.logo-img {
    filter: drop-shadow(0 0 10px rgba(225, 6, 0, 0.3));
}

.logo-img {
    height: 45px;
    width: auto;
    background: transparent !important; /* Force l'absence de fond */
    mix-blend-mode: screen; /* Optionnel : rend le noir transparent si ton fond est noir */
}

.gauge-needle {
    transition: transform 0.1s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: bottom center;
    /* Ajoute un petit glow rouge quand on approche du max */
}

.rpm-number {
    font-variant-numeric: tabular-nums; /* Évite que les chiffres bougent horizontalement */
    font-family: 'Orbitron', sans-serif;
}

/* Effet flash rouge au rupteur */
@keyframes redline-flash {
    0% { color: #fff; }
    50% { color: var(--red); text-shadow: 0 0 15px var(--red); }
    100% { color: #fff; }
}

.at-redline {
    animation: redline-flash 0.1s infinite;
}

/* =========================================================
   ✨ VISUAL ENHANCEMENTS — engagement & polish
   ========================================================= */

/* Scrollbar customisée */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #0a0b10; }
::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--red), #7a0000);
    border-radius: 10px;
    border: 2px solid #0a0b10;
}
::-webkit-scrollbar-thumb:hover { background: var(--red-2); }

/* Sélection texte */
::selection { background: var(--red); color: #fff; }

/* Titre héros — gradient shine animé */
.hero h1 .accent {
    background: linear-gradient(90deg, #ff1f1f, #ff6a00, #ff1f1f);
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shine 4s linear infinite;
    text-shadow: none;
    filter: drop-shadow(0 0 24px var(--red-glow));
}
@keyframes shine {
    to { background-position: 200% center; }
}

/* Boutons : effet shimmer au hover */
.btn::after {
    content: "";
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(120deg, transparent, rgba(255,255,255,.35), transparent);
    transition: left .6s ease;
    pointer-events: none;
}
.btn:hover::after { left: 100%; }
.btn-primary:hover { transform: translateY(-3px) scale(1.03); }
.btn-ghost:hover { transform: translateY(-3px) scale(1.03); }

/* Navbar : soulignement animé sous les liens */
.nav-list a:not(.btn-nav) {
    position: relative;
}
.nav-list a:not(.btn-nav)::after {
    content: "";
    position: absolute;
    left: 14px; right: 14px; bottom: 4px;
    height: 2px;
    background: var(--grad);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform .35s ease;
    border-radius: 2px;
}
.nav-list a:not(.btn-nav):hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* Kicker glow doux */
.kicker {
    box-shadow: 0 0 24px rgba(225,6,0,.15) inset;
}

/* Cards — halo lumineux qui suit le curseur */
.card, .price-card {
    transition: transform .35s cubic-bezier(.2,.7,.2,1), border-color .3s, box-shadow .3s;
    will-change: transform;
}
.card::after, .price-card::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(320px circle at var(--mx, 50%) var(--my, 50%),
                rgba(225,6,0,.18), transparent 55%);
    opacity: 0;
    transition: opacity .35s ease;
    pointer-events: none;
}
.card:hover::after, .price-card:hover::after { opacity: 1; }

/* Icônes cartes — flottement au hover */
.card:hover .card-icon {
    transform: translateY(-4px) scale(1.15) rotate(-4deg);
    filter: drop-shadow(0 0 18px var(--red-glow));
}
.card-icon { transition: transform .4s cubic-bezier(.2,.7,.2,1), filter .3s; }

/* Prix — pulsation subtile featured */
.price-card.featured { animation: featuredPulse 3.5s ease-in-out infinite; }
@keyframes featuredPulse {
    0%,100% { box-shadow: 0 0 0 1px var(--red), 0 20px 60px var(--red-glow); }
    50%     { box-shadow: 0 0 0 1px var(--red), 0 25px 80px rgba(225,6,0,.75); }
}

/* Options — micro-lift + accent gauche */
.opt {
    border-left: 3px solid transparent;
    position: relative;
}
.opt:hover {
    border-left-color: var(--red);
    box-shadow: 0 8px 24px rgba(225,6,0,.12);
}

/* Steps — numéro qui grossit au hover */
.step:hover span {
    transform: scale(1.12) rotate(-6deg);
    box-shadow: 0 0 30px var(--red);
}
.step span { transition: transform .35s ease, box-shadow .35s ease; }

/* Formulaires — étiquettes plus vivantes, inputs plus doux */
.fs-form label, .contact-form label { transition: color .25s; }
.fs-form label:focus-within, .contact-form label:focus-within { color: var(--red-2); }
.fs-form input, .fs-form select, .fs-form textarea,
.contact-form input, .contact-form textarea {
    background: linear-gradient(180deg, #16171f, #101118);
}

/* Socials — halo au hover */
.socials a {
    position: relative;
    overflow: hidden;
}
.socials a::before {
    content: "";
    position: absolute; inset: 0;
    background: radial-gradient(circle at center, var(--red-glow), transparent 70%);
    opacity: 0;
    transition: opacity .3s;
}
.socials a:hover::before { opacity: 1; }

/* Section-head — barre décorative */
.section-head h2 {
    position: relative;
    display: inline-block;
    padding-bottom: 12px;
}
.section-head h2::after {
    content: "";
    position: absolute;
    left: 50%; bottom: 0;
    transform: translateX(-50%);
    width: 60px; height: 3px;
    background: var(--grad);
    border-radius: 2px;
    box-shadow: 0 0 12px var(--red-glow);
}

/* Ambient light — glow doux dans le fond des sections */
.section::before {
    content: "";
    position: absolute;
    top: 20%; left: -10%;
    width: 320px; height: 320px;
    background: radial-gradient(circle, rgba(225,6,0,.10), transparent 70%);
    filter: blur(40px);
    pointer-events: none;
    z-index: 0;
}
.section-alt::before {
    left: auto; right: -10%;
    background: radial-gradient(circle, rgba(10,132,255,.10), transparent 70%);
}
.section > .container { position: relative; z-index: 1; }

/* Footer — accent en haut */
.footer {
    background: linear-gradient(180deg, #05060a, #08090f);
    position: relative;
}
.footer::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--red), transparent);
}

/* Focus accessibilité */
a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible {
    outline: 2px solid var(--red-2);
    outline-offset: 3px;
    border-radius: 6px;
}

/* Reveal amélioré */
.reveal { transform: translateY(50px) scale(.98); }
.reveal.visible { transform: none; }

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .001ms !important;
    }
}