/* ==========================================================================
   E9 ENERGY · stockage, conversion, concentration solaire
   Palette chaude : nuit de désert, braise, or, sel en fusion
   ========================================================================== */

:root{
  --night:#100804;
  --ember:#190D06;
  --panel:#20120A;
  --hair:rgba(255,180,60,.18);
  --hair-hot:rgba(255,180,60,.45);
  --gold:#FFB43C;
  --flare:#FF6A2A;
  --deep:#C4310E;
  --salt:#FFEBD0;
  --ash:#C2A283;
  --cold:#6FC6FF;      /* sel froid 290 °C · seule couleur froide, fonctionnelle */
  --grid:rgba(255,180,60,.05);

  --shell:1240px;
  --step:clamp(76px,9vw,150px);
  --d:'Syne',system-ui,sans-serif;
  --b:'Rubik',system-ui,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

body{
  margin:0;background:var(--night);color:var(--salt);
  font-family:var(--b);font-weight:300;font-size:17px;line-height:1.66;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body::before{
  content:'';position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(60% 40% at 50% -5%,rgba(255,106,42,.20),transparent 70%),
    radial-gradient(40% 30% at 88% 12%,rgba(255,180,60,.10),transparent 70%),
    linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:auto,auto,86px 86px,86px 86px;
}
.heat{
  position:fixed;inset:0;z-index:70;pointer-events:none;
  background:repeating-linear-gradient(0deg,rgba(0,0,0,.13) 0 1px,transparent 1px 3px);
  opacity:.45;mix-blend-mode:multiply;
}
.heat::after{
  content:'';position:absolute;left:0;right:0;height:220px;
  background:linear-gradient(180deg,transparent,rgba(255,180,60,.045),transparent);
  animation:sweepv 14s linear infinite;
}
@keyframes sweepv{0%{top:-25%}100%{top:125%}}

img{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3,h4{font-family:var(--d);font-weight:700;line-height:1.04;margin:0;letter-spacing:-.02em}
h2{font-size:clamp(32px,4.4vw,58px)}
h3{font-size:clamp(20px,2.2vw,26px);letter-spacing:-.01em}
p{margin:0 0 1.05em}p:last-child{margin-bottom:0}

.lede{font-size:clamp(18px,1.55vw,21px);color:#EBD3B7;max-width:64ch}
.muted{color:var(--ash)}
.small{font-size:15px;line-height:1.6}
.data{font-family:var(--d);font-variant-numeric:tabular-nums;font-weight:600}
.tag{font-family:var(--d);font-size:11.5px;font-weight:700;letter-spacing:.22em;color:var(--gold);display:inline-flex;align-items:center;gap:10px}
.tag::before{content:'';width:26px;height:2px;background:linear-gradient(90deg,var(--flare),var(--gold))}

/* ------------------------------------------------------------- barre haute */
.top{
  position:fixed;top:0;left:0;right:0;z-index:60;height:60px;display:flex;align-items:center;gap:20px;
  padding:0 clamp(16px,3vw,34px);border-bottom:1px solid var(--hair);
  background:rgba(16,8,4,.78);backdrop-filter:blur(12px);
}
.mark{display:flex;align-items:baseline;gap:10px;font-family:var(--d);font-weight:800;letter-spacing:-.02em}
.mark b{font-size:22px;background:linear-gradient(92deg,var(--gold),var(--flare));-webkit-background-clip:text;background-clip:text;color:transparent}
.mark span{font-size:11px;letter-spacing:.26em;color:var(--ash);font-weight:600}
.nav{display:flex;gap:22px;margin-left:26px}
.nav a{text-decoration:none;font-family:var(--d);font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--ash);transition:color .25s;position:relative}
.nav a::after{content:'';position:absolute;left:0;right:100%;bottom:-6px;height:1px;background:var(--gold);transition:right .3s}
.nav a:hover,.nav a[aria-current="true"]{color:var(--gold)}
.nav a:hover::after,.nav a[aria-current="true"]::after{right:0}
@media (max-width:1040px){.nav{display:none}}
.lang{margin-left:auto;display:flex;border:1px solid var(--hair-hot)}
.lang button{background:none;border:0;color:var(--ash);cursor:pointer;font-family:var(--d);font-size:11.5px;font-weight:600;letter-spacing:.12em;padding:6px 11px;transition:.2s}
.lang button[aria-pressed="true"]{background:linear-gradient(92deg,var(--gold),var(--flare));color:var(--night)}
.cta{
  font-family:var(--d);font-size:12px;font-weight:600;letter-spacing:.12em;text-decoration:none;
  padding:9px 16px;color:var(--night);background:linear-gradient(92deg,var(--gold),var(--flare));
  box-shadow:0 0 24px rgba(255,106,42,.35);transition:transform .2s,box-shadow .25s;
}
.cta:hover{transform:translateY(-1px);box-shadow:0 0 34px rgba(255,106,42,.6)}
@media (max-width:560px){.cta{display:none}}

/* -------------------------------------------------------------- structure */
main{position:relative;z-index:1}
.shell{max-width:var(--shell);margin:0 auto;padding:0 clamp(20px,4vw,46px)}
section{padding:var(--step) 0;position:relative}
.rule{height:1px;background:linear-gradient(90deg,transparent,var(--hair-hot),transparent);max-width:var(--shell);margin:0 auto}
.head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,5vw,66px);align-items:end;margin-bottom:clamp(34px,5vw,62px)}
.head h2{margin-top:14px}
@media (max-width:860px){.head{grid-template-columns:1fr;gap:20px;align-items:start}}

/* ------------------------------------------------------------------- hero */
.hero{position:relative;min-height:100svh;display:flex;align-items:flex-end;overflow:hidden;border-bottom:1px solid var(--hair)}
.hero__img{position:absolute;inset:0}
.hero__img img{width:100%;height:100%;object-fit:cover;object-position:50% 62%;filter:saturate(1.15) contrast(1.1) brightness(.62) sepia(.25);transform:scale(1.06);animation:slowzoom 40s ease-in-out infinite alternate}
@keyframes slowzoom{to{transform:scale(1.14)}}
.hero__img::after{content:'';position:absolute;inset:0;background:
  linear-gradient(180deg,rgba(16,8,4,.82),rgba(16,8,4,.20) 42%,rgba(16,8,4,.96)),
  radial-gradient(50% 45% at 50% 30%,rgba(255,150,40,.28),transparent 70%)}
#heroField{position:absolute;inset:0;z-index:2}
.hero__in{position:relative;z-index:3;width:100%;padding:130px 0 52px}
.hero h1{font-size:clamp(60px,13vw,190px);font-weight:800;letter-spacing:-.05em;line-height:.82;margin:20px 0 0}
.hero h1 i{font-style:normal;background:linear-gradient(96deg,#FFE9A8,var(--gold) 42%,var(--flare));-webkit-background-clip:text;background-clip:text;color:transparent;filter:drop-shadow(0 0 44px rgba(255,140,40,.55))}
.hero__sub{max-width:56ch;margin-top:24px;font-size:clamp(17px,1.7vw,22px);color:#F0D9BD}
.kpis{margin-top:46px;display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--hair)}
@media (max-width:760px){.kpis{grid-template-columns:repeat(2,1fr)}}
.kpi{padding:18px 20px 14px;border-right:1px solid var(--hair)}
.kpi:last-child{border-right:0}
.kpi b{display:block;font-family:var(--d);font-weight:700;font-size:clamp(26px,3.2vw,38px);line-height:1;color:var(--gold)}
.kpi span{display:block;margin-top:9px;font-family:var(--d);font-size:10.5px;font-weight:600;letter-spacing:.18em;color:var(--ash)}
.badge{display:inline-flex;align-items:center;gap:9px;border:1px solid var(--hair-hot);color:var(--gold);font-family:var(--d);font-size:11px;font-weight:600;letter-spacing:.2em;padding:7px 14px;background:rgba(255,106,42,.08)}
.badge i{width:6px;height:6px;border-radius:50%;background:var(--flare);box-shadow:0 0 12px var(--flare);animation:beat 2.2s infinite}
@keyframes beat{0%,100%{opacity:1}50%{opacity:.2}}

/* ------------------------------------------------------------------ blocs */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--hair);border:1px solid var(--hair)}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--hair);border:1px solid var(--hair)}
@media (max-width:880px){.grid3{grid-template-columns:1fr}.grid2{grid-template-columns:1fr}}
.card{background:var(--ember);padding:clamp(24px,2.8vw,36px);position:relative;overflow:hidden}
.card::before{content:'';position:absolute;inset:0;background:radial-gradient(70% 60% at 10% 0%,rgba(255,106,42,.10),transparent 70%);opacity:0;transition:opacity .5s}
.card:hover::before{opacity:1}
.card h3{margin-bottom:12px}
.card .idx{display:block;font-family:var(--d);font-size:11px;font-weight:700;letter-spacing:.2em;color:var(--flare);margin-bottom:18px}

.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,4.5vw,68px);align-items:center}
.split--l{grid-template-columns:1.15fr .85fr}
@media (max-width:920px){.split,.split--l{grid-template-columns:1fr;gap:34px}}

.specs{width:100%;border-collapse:collapse;font-size:15.5px}
.specs caption{text-align:left;font-family:var(--d);font-size:11px;font-weight:700;letter-spacing:.2em;color:var(--gold);padding-bottom:14px}
.specs th,.specs td{border-bottom:1px solid var(--hair);padding:11px 4px;text-align:left;vertical-align:top}
.specs th{font-weight:300;color:var(--ash);width:52%}
.specs td{font-family:var(--d);font-weight:600;font-variant-numeric:tabular-nums;color:var(--salt)}
.specs tr:hover td{color:var(--gold)}

/* ------------------------------------------------------- module cellules */
.cellbox{border:1px solid var(--hair-hot);background:linear-gradient(180deg,#1B0E07,#140A05)}
.celltabs{display:flex;gap:1px;background:var(--hair)}
.celltabs button{flex:1;background:var(--ember);border:0;cursor:pointer;padding:16px 12px;color:var(--ash);font-family:var(--d);font-weight:600;font-size:14px;transition:.25s;position:relative}
.celltabs button span{display:block;font-size:10px;font-weight:600;letter-spacing:.14em;margin-top:4px;color:var(--ash);opacity:.7}
.celltabs button[aria-selected="true"]{color:var(--gold);background:#241308}
.celltabs button[aria-selected="true"]::after{content:'';position:absolute;left:0;right:0;bottom:0;height:2px;background:linear-gradient(90deg,var(--flare),var(--gold));box-shadow:0 0 16px var(--gold)}
.cellbody{display:grid;grid-template-columns:1fr 300px}
@media (max-width:920px){.cellbody{grid-template-columns:1fr}}
.cellstage{position:relative;min-height:360px;border-right:1px solid var(--hair)}
.cellstage canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.cellside{padding:22px}
.cellside h3{margin-bottom:10px;color:var(--gold)}
.cellside p{font-size:15px;color:#E4CBAF}
.mini{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--hair);border:1px solid var(--hair);margin-top:18px}
.mini div{background:#1B0E07;padding:12px 13px}
.mini span{display:block;font-family:var(--d);font-size:9.5px;font-weight:600;letter-spacing:.16em;color:var(--ash)}
.mini b{display:block;font-family:var(--d);font-size:19px;font-weight:700;color:var(--gold);margin-top:4px}
.modebtns{display:flex;gap:1px;background:var(--hair);border-top:1px solid var(--hair)}
.modebtns button{flex:1;background:var(--ember);border:0;color:var(--ash);cursor:pointer;font-family:var(--d);font-weight:600;font-size:12px;letter-spacing:.12em;padding:13px;transition:.2s}
.modebtns button[aria-pressed="true"]{background:linear-gradient(92deg,var(--gold),var(--flare));color:var(--night)}

/* ------------------------------------------------------------ ragone/plot */
.plot{border:1px solid var(--hair);background:#150B06;position:relative;height:330px}
.plot canvas{position:absolute;inset:0;width:100%;height:100%}

/* ------------------------------------------------------------ centrale */
.plant{border:1px solid var(--hair-hot);background:linear-gradient(180deg,#1A0E07,#120904)}
.plant__stage{position:relative;min-height:520px;overflow:hidden}
.plant__stage canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.plant__hud{position:absolute;left:16px;top:14px;display:flex;gap:22px;flex-wrap:wrap;pointer-events:none}
.hudcell span{display:block;font-family:var(--d);font-size:9.5px;font-weight:600;letter-spacing:.16em;color:var(--ash)}
.hudcell b{display:block;font-family:var(--d);font-size:20px;font-weight:700;color:var(--gold);margin-top:2px;font-variant-numeric:tabular-nums}
.plant__ctl{display:grid;grid-template-columns:auto 1fr auto;gap:18px;align-items:center;padding:16px 20px;border-top:1px solid var(--hair)}
.plant__ctl label{font-family:var(--d);font-size:11px;font-weight:600;letter-spacing:.16em;color:var(--ash);white-space:nowrap}
.plant__ctl output{font-family:var(--d);font-weight:700;color:var(--gold);font-size:18px;min-width:74px;text-align:right}
input[type=range]{width:100%;-webkit-appearance:none;appearance:none;height:3px;background:linear-gradient(90deg,#3A2113,var(--gold),#3A2113);outline:none}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:15px;height:15px;border-radius:50%;background:var(--flare);cursor:pointer;box-shadow:0 0 16px rgba(255,106,42,.9)}
input[type=range]::-moz-range-thumb{width:15px;height:15px;border:0;border-radius:50%;background:var(--flare);cursor:pointer}
.playbtn{background:none;border:1px solid var(--hair-hot);color:var(--gold);font-family:var(--d);font-size:11px;font-weight:600;letter-spacing:.14em;padding:8px 14px;cursor:pointer;transition:.2s}
.playbtn:hover{background:rgba(255,106,42,.12)}

/* ------------------------------------------------------------- circuit */
.loop{border:1px solid var(--hair);background:#150B06;position:relative;height:420px}
.loop canvas{position:absolute;inset:0;width:100%;height:100%}
.loopleg{display:flex;gap:20px;flex-wrap:wrap;padding:12px 16px;border-top:1px solid var(--hair);font-family:var(--d);font-size:10.5px;font-weight:600;letter-spacing:.13em;color:var(--ash)}
.loopleg i{display:inline-block;width:9px;height:9px;margin-right:7px;vertical-align:middle}

/* ---------------------------------------------------------------- carte */
.map{border:1px solid var(--hair-hot);background:#120804;position:relative;height:560px}
.map canvas{position:absolute;inset:0;width:100%;height:100%}
.mapleg{position:absolute;right:14px;bottom:14px;font-family:var(--d);font-size:10px;font-weight:600;letter-spacing:.12em;color:var(--ash);text-align:right;pointer-events:none}

/* ------------------------------------------------------------ tour SVG */
.tower{display:grid;grid-template-columns:300px 1fr;gap:clamp(24px,4vw,52px);align-items:center}
@media (max-width:860px){.tower{grid-template-columns:1fr}}
.tower svg{width:100%;height:auto;max-height:520px}
.tw-hot{cursor:pointer}
.tw-hot circle{transition:r .2s,fill .2s}
.tw-hot:hover circle,.tw-hot[aria-pressed="true"] circle{fill:var(--gold)}
.twinfo{border-left:2px solid var(--gold);padding:4px 0 4px 20px;min-height:120px}
.twinfo h4{font-family:var(--d);font-size:19px;color:var(--gold);margin-bottom:8px}
.twinfo p{color:#E4CBAF;font-size:16px;margin:0}

/* ------------------------------------------------------------- bande img */
.band{position:relative;height:min(58vh,480px);overflow:hidden;border-block:1px solid var(--hair)}
.band img{width:100%;height:100%;object-fit:cover;filter:saturate(1.1) brightness(.6) sepia(.3)}
.band__t{position:absolute;inset:0;display:flex;align-items:center;background:linear-gradient(90deg,rgba(16,8,4,.94),rgba(16,8,4,.1) 72%)}
.band__t div{max-width:var(--shell);margin:0 auto;padding:0 clamp(20px,4vw,46px);width:100%}
.band blockquote{margin:0;font-family:var(--d);font-weight:700;font-size:clamp(24px,3.4vw,44px);line-height:1.1;max-width:20ch}

/* -------------------------------------------------------------- chiffres */
.figs{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--hair);border:1px solid var(--hair)}
@media (max-width:900px){.figs{grid-template-columns:repeat(2,1fr)}}
.figs div{background:var(--ember);padding:22px}
.figs b{display:block;font-family:var(--d);font-size:clamp(22px,2.8vw,32px);font-weight:700;color:var(--gold);line-height:1}
.figs span{display:block;font-family:var(--d);font-size:10px;font-weight:600;letter-spacing:.16em;color:var(--ash);margin-top:9px}

/* ------------------------------------------------------------- jalons */
.steps{border-left:1px solid var(--hair-hot);margin-left:10px}
.st{position:relative;padding:0 0 34px 30px}
.st::before{content:'';position:absolute;left:-6px;top:8px;width:11px;height:11px;border-radius:50%;background:var(--night);border:1px solid var(--hair-hot)}
.st--now::before{background:var(--flare);border-color:var(--flare);box-shadow:0 0 16px var(--flare);animation:beat 2.4s infinite}
.st span{font-family:var(--d);font-size:11px;font-weight:700;letter-spacing:.18em;color:var(--flare)}
.st h4{font-family:var(--d);font-size:19px;margin:7px 0 6px}
.st p{font-size:15.5px;color:#DCC3A6;margin:0;max-width:60ch}

/* -------------------------------------------------------------- contact */
.contact{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(28px,5vw,70px)}
@media (max-width:860px){.contact{grid-template-columns:1fr}}
.mail{font-family:var(--d);font-weight:700;font-size:clamp(20px,2.6vw,32px);color:var(--gold);text-decoration:none;border-bottom:1px solid rgba(255,180,60,.25);transition:border-color .25s}
.mail:hover{border-color:var(--gold)}
.legal{font-size:14px;color:var(--ash);line-height:1.95}
.legal b{color:var(--salt);font-family:var(--d);font-weight:600}

footer{border-top:1px solid var(--hair);padding:30px 0 48px}
.foot{display:flex;flex-wrap:wrap;gap:18px;justify-content:space-between;font-family:var(--d);font-size:11px;font-weight:600;letter-spacing:.16em;color:var(--ash)}

/* ------------------------------------------------------------ révélation */
.js .rev{opacity:0;transform:translateY(20px);transition:opacity .9s ease,transform .9s cubic-bezier(.2,.7,.2,1)}
.js .rev.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .js .rev{opacity:1;transform:none;transition:none}
  .hero__img img,.heat::after,.badge i,.st--now::before{animation:none}
}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}
::selection{background:var(--flare);color:var(--night)}

/* ======================= AJOUTS : progression, coop, emploi ============= */
.progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:80;pointer-events:none;background:rgba(255,180,60,.08)}
.progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--deep),var(--flare),var(--gold));box-shadow:0 0 14px rgba(255,140,50,.8)}

/* lueur qui suit le pointeur */
.card,.kpi,.figs div,.job{position:relative}
.card::after,.figs div::after{
  content:'';position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .35s;
  background:radial-gradient(220px 180px at var(--mx,50%) var(--my,50%),rgba(255,180,60,.16),transparent 70%);
}
.card:hover::after,.figs div:hover::after{opacity:1}

/* coopération VOLTCARE */
.coop{border:1px solid var(--hair-hot);background:linear-gradient(180deg,#1B0E07,#130A05);display:grid;grid-template-columns:1fr 330px}
@media (max-width:960px){.coop{grid-template-columns:1fr}}
.coop__stage{position:relative;min-height:420px;border-right:1px solid var(--hair)}
.coop__stage canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.coop__side{padding:24px}
.coop__side h3{color:var(--gold);margin-bottom:12px}

/* emploi */
.jobs{border-top:1px solid var(--hair)}
.job{border-bottom:1px solid var(--hair);overflow:hidden}
.jobhead{list-style:none;cursor:pointer;display:grid;grid-template-columns:1fr auto auto;gap:20px;align-items:center;padding:20px 6px;font-family:var(--d);transition:color .25s,background .35s}
.jobhead::-webkit-details-marker{display:none}
.jobhead:hover{color:var(--gold);background:rgba(255,106,42,.05)}
.jobhead h4{font-size:19px;font-weight:700;margin:0}
.jobmeta{font-size:11px;font-weight:600;letter-spacing:.14em;color:var(--ash)}
.jobplus{width:16px;height:16px;position:relative}
.jobplus::before,.jobplus::after{content:'';position:absolute;background:var(--gold);transition:transform .3s}
.jobplus::before{left:0;top:7.5px;width:16px;height:1.5px}
.jobplus::after{left:7.5px;top:0;width:1.5px;height:16px}
.job[open] .jobplus::after{transform:scaleY(0)}
.job[open] .jobhead{color:var(--gold)}
.jobbody{padding:0 6px 26px;max-width:76ch;animation:slidein .45s cubic-bezier(.2,.7,.2,1)}
@keyframes slidein{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
.jobbody ul{margin:12px 0 0;padding-left:18px;color:#D9C0A4;font-size:15.5px}
.jobbody li{margin-bottom:5px}
@media (max-width:640px){.jobhead{grid-template-columns:1fr auto}.jobmeta{display:none}}

/* parallaxe héros */
.hero__in{will-change:transform}
@media (prefers-reduced-motion:reduce){
  .jobbody{animation:none}
}