:root{
  --ground:#0E141B;
  --surface:#16202B;
  --raised:#1C2836;
  --line:#243140;
  --line-strong:#33445A;
  --text:#EEF2F6;
  --text-2:#D5DCE3;
  --muted:#95A1AE;
  --red:#E10713;
  --red-hi:#FF4A55;
  --red-deep:#9C050D;
  --display:"Montserrat",system-ui,"Segoe UI",Arial,sans-serif;
  --body:"Barlow","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --wrap:1160px;
  --pad:clamp(20px,5vw,48px);
  color-scheme:dark;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0;background:var(--ground);color:var(--text-2);
  font-family:var(--body);font-size:17px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3{font-family:var(--display);color:var(--text);margin:0;text-wrap:balance;line-height:1.1}
h2{font-size:clamp(28px,4vw,42px);font-weight:800;letter-spacing:-.01em}
h3{font-size:20px;font-weight:700}
p{margin:0}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:var(--pad);padding-right:var(--pad)}
.eyebrow{
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--red-hi);display:inline-flex;align-items:center;gap:10px;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--red)}
.lead{font-size:19px;color:var(--muted);max-width:62ch}
.btn{
  display:inline-flex;align-items:center;gap:10px;font-family:var(--display);font-weight:700;
  font-size:15px;letter-spacing:.02em;text-decoration:none;padding:14px 22px;border-radius:4px;
  border:1.5px solid transparent;transition:transform .15s,background .15s,border-color .15s;
}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--red-hi);outline-offset:3px}
.btn-primary{background:var(--red);color:#fff}
.btn-primary:hover{background:var(--red-hi);transform:translateY(-1px)}
.btn-ghost{border-color:var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--text-2);transform:translateY(-1px)}

/* ---------- nav ---------- */
.nav{
  position:sticky;top:0;z-index:20;background:rgba(14,20,27,.85);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:24px}
.nav img{height:34px;width:auto}
.nav ul{list-style:none;margin:0;padding:0;display:flex;gap:28px;align-items:center}
.nav ul a{text-decoration:none;font-weight:500;font-size:15px;color:var(--text-2)}
.nav ul a:hover{color:#fff}
.nav .btn{padding:10px 16px;font-size:14px}
.nav-toggle{display:none;background:none;border:1px solid var(--line-strong);color:var(--text);border-radius:4px;padding:8px 10px;font-family:var(--mono);font-size:12px}
@media (max-width:860px){
  .nav ul{display:none;position:absolute;left:0;right:0;top:68px;background:var(--surface);flex-direction:column;align-items:stretch;gap:0;border-bottom:1px solid var(--line)}
  .nav ul.open{display:flex}
  .nav ul li{padding:0 var(--pad)}
  .nav ul a{display:block;padding:14px 0;border-bottom:1px solid var(--line)}
  .nav ul .btn{margin:14px 0}
  .nav-toggle{display:block}
}

/* ---------- hero (vue casque FPV) ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.hero .wrap{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;padding-top:clamp(64px,10vw,120px);padding-bottom:clamp(64px,10vw,120px)}
.hero h1{font-size:clamp(40px,7vw,84px);font-weight:900;letter-spacing:-.025em;text-transform:uppercase;line-height:.98}
.hero h1 em{font-style:normal;color:var(--red)}
.hero .lead{margin-top:22px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-art{position:relative;aspect-ratio:1;max-width:440px;justify-self:end;width:100%}
.hero-art img{width:100%;height:100%;object-fit:contain;filter:drop-shadow(0 30px 60px rgba(225,7,19,.25))}
.osd{position:absolute;font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--muted);text-transform:uppercase}
.osd b{color:var(--text);font-weight:500}
.osd-tl{top:0;left:0}.osd-tr{top:0;right:0;text-align:right}.osd-bl{bottom:0;left:0}.osd-br{bottom:0;right:0;text-align:right}
.corner{position:absolute;width:26px;height:26px;border:2px solid var(--red);opacity:.9}
.c-tl{top:-14px;left:-14px;border-right:0;border-bottom:0}
.c-tr{top:-14px;right:-14px;border-left:0;border-bottom:0}
.c-bl{bottom:-14px;left:-14px;border-right:0;border-top:0}
.c-br{bottom:-14px;right:-14px;border-left:0;border-top:0}
.hero-strip{border-top:1px solid var(--line);background:var(--surface)}
.hero-strip .wrap{display:grid;grid-template-columns:repeat(3,1fr);padding-top:0;padding-bottom:0}
.stat{padding:22px 0;border-right:1px solid var(--line);padding-right:24px}
.stat+.stat{padding-left:24px}
.stat:last-child{border-right:0}
.stat strong{display:block;font-family:var(--display);font-size:30px;font-weight:800;color:var(--text);font-variant-numeric:tabular-nums;line-height:1}
.stat span{display:block;margin-top:8px;font-size:14px;color:var(--muted)}
@media (max-width:860px){
  .hero .wrap{grid-template-columns:1fr}
  .hero-art{max-width:260px;justify-self:start;margin-top:10px}
  .hero-strip .wrap{grid-template-columns:1fr}
  .stat{border-right:0;border-bottom:1px solid var(--line);padding-left:0!important;padding-right:0}
  .stat:last-child{border-bottom:0}
}

/* ---------- sections ---------- */
.section{padding:clamp(64px,9vw,112px) 0}
.section+.section{border-top:1px solid var(--line)}
.section-head{display:grid;grid-template-columns:1fr 1fr;gap:24px 48px;align-items:end;margin-bottom:48px}
.section-head .lead{font-size:17px}
@media (max-width:860px){.section-head{grid-template-columns:1fr}}

/* activités */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.act{
  position:relative;background:var(--surface);border:1px solid var(--line);padding:36px 32px 32px;
  display:flex;flex-direction:column;gap:18px;overflow:hidden;
}
.act::before{content:"";position:absolute;top:0;left:0;width:64px;height:4px;background:var(--red)}
.act h3{font-size:26px;font-weight:800}
.act p{color:var(--muted)}
.act ul{margin:0;padding:0;list-style:none;display:grid;gap:10px;font-size:15px}
.act li{display:flex;gap:12px;align-items:baseline}
.act li::before{content:"";flex:none;width:6px;height:6px;background:var(--red);transform:translateY(-3px)}
.act .tag{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
@media (max-width:760px){.duo{grid-template-columns:1fr}}

/* compétences */
.skills{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.skill{background:var(--ground);padding:28px 24px;display:flex;flex-direction:column;gap:12px;transition:background .2s}
.skill:hover{background:var(--surface)}
.skill .ico{width:40px;height:40px;color:var(--red-hi)}
.skill h3{font-size:19px}
.skill p{font-size:15px;color:var(--muted)}
.skill .code{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--muted);text-transform:uppercase;margin-top:auto;padding-top:10px}
@media (max-width:960px){.skills{grid-template-columns:repeat(2,1fr)}}
@media (max-width:520px){.skills{grid-template-columns:1fr}}

/* programme (timeline) */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.timeline::before{content:"";position:absolute;left:0;right:0;top:9px;height:1px;background:var(--line-strong)}
.tl{position:relative;padding-top:28px}
.tl::before{content:"";position:absolute;top:4px;left:0;width:11px;height:11px;border-radius:50%;background:var(--ground);border:2px solid var(--red)}
.tl .when{font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--red-hi)}
.tl h3{margin-top:8px;font-size:18px}
.tl p{margin-top:10px;font-size:15px;color:var(--muted)}
@media (max-width:860px){
  .timeline{grid-template-columns:1fr;gap:28px;padding-left:24px}
  .timeline::before{left:5px;right:auto;top:0;bottom:0;width:1px;height:auto}
  .tl{padding-top:0;padding-left:8px}
  .tl::before{left:-24px;top:6px}
}

/* UAV challenge */
.uav{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step{background:var(--ground);border:1px solid var(--line);padding:28px;display:flex;flex-direction:column;gap:10px}
.step .num{font-family:var(--display);font-size:44px;font-weight:900;color:var(--red);line-height:1;font-variant-numeric:tabular-nums}
.step .when{font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.step h3{font-size:22px}
.step p{font-size:15px;color:var(--muted)}
.uav-note{margin-top:28px;font-size:14px;color:var(--muted);display:flex;gap:10px;align-items:baseline}
.uav-note::before{content:"//";font-family:var(--mono);color:var(--red)}
@media (max-width:860px){.steps{grid-template-columns:1fr}}

/* équipe */
.team{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.person{border:1px solid var(--line);padding:24px;display:flex;gap:18px;align-items:flex-start}
.person .avatar{flex:none;width:56px;height:56px;border-radius:50%;background:var(--red);display:grid;place-items:center;font-family:var(--display);font-weight:800;color:#fff;font-size:18px}
.person .role{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--red-hi)}
.person h3{margin-top:4px;font-size:19px}
.person p{margin-top:8px;font-size:14px;color:var(--muted)}
.open-roles{margin-top:20px;border:1px dashed var(--line-strong);padding:24px;display:grid;grid-template-columns:auto 1fr;gap:8px 32px;align-items:start}
.open-roles .label{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);padding-top:4px}
.open-roles ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.open-roles li strong{display:block;font-family:var(--display);font-weight:700;color:var(--text);font-size:16px}
.open-roles li span{font-size:14px;color:var(--muted)}
@media (max-width:860px){.team,.open-roles{grid-template-columns:1fr}.open-roles ul{grid-template-columns:1fr}}

/* rejoindre */
.join{position:relative;overflow:hidden;background:var(--red);color:#fff}
.join .wrap{position:relative;padding-top:clamp(64px,9vw,104px);padding-bottom:clamp(64px,9vw,104px);display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center}
.join h2{color:#fff;font-size:clamp(32px,5vw,56px);font-weight:900;text-transform:uppercase;letter-spacing:-.02em}
.join .lead{color:rgba(255,255,255,.85);margin-top:16px}
.join .eyebrow{color:#fff}.join .eyebrow::before{background:#fff}
.join-links{display:grid;gap:12px}
.join-links a{display:flex;align-items:center;justify-content:space-between;gap:16px;background:rgba(14,20,27,.35);border:1px solid rgba(255,255,255,.25);padding:16px 20px;text-decoration:none;border-radius:4px;transition:background .15s}
.join-links a:hover{background:rgba(14,20,27,.55)}
.join-links strong{font-family:var(--display);font-weight:700;display:block}
.join-links small{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;opacity:.8}
.join-links .arrow{font-family:var(--mono);font-size:18px}
.join-watermark{position:absolute;right:-6%;bottom:-30%;width:46%;opacity:.12;pointer-events:none}
@media (max-width:860px){.join .wrap{grid-template-columns:1fr}.join-watermark{width:80%}}

/* footer */
footer{padding:48px 0 32px;border-top:1px solid var(--line)}
footer .wrap{display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center}
footer .brand img{height:64px;width:auto}
footer .brand p{margin-top:14px;font-size:14px;color:var(--muted);max-width:44ch}
footer .partner{text-align:right}
footer .partner span{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
footer .partner img{height:52px;width:auto;margin-left:auto;background:#fff;padding:8px 10px;border-radius:3px}
footer .legal{margin-top:36px;padding-top:18px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--muted)}
@media (max-width:700px){footer .wrap{grid-template-columns:1fr}footer .partner{text-align:left}footer .partner img{margin-left:0}}

/* reveal */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ---------- pages secondaires (formulaire, admin) ---------- */
.page-head{padding:clamp(48px,7vw,80px) 0 32px}
.page-head h1{font-size:clamp(32px,5vw,56px);font-weight:900;text-transform:uppercase;letter-spacing:-.02em}
.page-head .lead{margin-top:16px}
.form-wrap{max-width:760px}
.form{display:grid;gap:36px;padding-bottom:clamp(64px,8vw,104px)}
fieldset{border:0;margin:0;padding:0;display:grid;gap:14px;min-width:0}
legend{font-family:var(--display);font-weight:700;font-size:18px;color:var(--text);padding:0;margin-bottom:4px}
legend small{display:block;font-family:var(--body);font-weight:400;font-size:14px;color:var(--muted);margin-top:4px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:600px){.grid2{grid-template-columns:1fr}}
.field{display:grid;gap:6px}
.field label{font-size:14px;font-weight:500;color:var(--text-2)}
.field input,.field select,.field textarea{
  font:inherit;font-size:16px;color:var(--text);background:var(--surface);border:1px solid var(--line-strong);
  border-radius:4px;padding:12px 14px;width:100%;transition:border-color .15s;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--red-hi);box-shadow:0 0 0 3px rgba(225,7,19,.2)}
.field textarea{min-height:120px;resize:vertical}
.field .err{font-size:13px;color:var(--red-hi);display:none}
.field.invalid input{border-color:var(--red)}
.field.invalid .err{display:block}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{position:relative}
.chip input{position:absolute;opacity:0;width:1px;height:1px}
.chip span{display:inline-block;padding:10px 16px;border:1px solid var(--line-strong);border-radius:999px;font-size:15px;cursor:pointer;color:var(--text-2);background:var(--surface);transition:all .15s;user-select:none}
.chip input:checked+span{background:var(--red);border-color:var(--red);color:#fff}
.chip input:focus-visible+span{outline:2px solid var(--red-hi);outline-offset:2px}
.chip span:hover{border-color:var(--text-2)}
.check{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2)}
.check input{margin-top:5px;accent-color:var(--red);width:16px;height:16px;flex:none}
.hp{position:absolute;left:-9999px;opacity:0}
.form-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.form-note{font-size:14px;color:var(--muted)}
.alert{border:1px solid var(--red);padding:14px 16px;font-size:15px;color:var(--text);background:rgba(225,7,19,.08);display:none}
.alert.show{display:block}
.done{display:none;padding:48px 0 96px;text-align:left}
.done.show{display:block}
.done h2{font-size:clamp(28px,4vw,40px)}
.done p{margin-top:14px;color:var(--muted);max-width:56ch}

/* admin */
.admin{padding:32px 0 96px}
.tiles{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:28px}
.tile{background:var(--surface);border:1px solid var(--line);padding:18px 20px}
.tile strong{display:block;font-family:var(--display);font-size:30px;font-weight:800;color:var(--text);font-variant-numeric:tabular-nums;line-height:1}
.tile span{display:block;margin-top:8px;font-size:13px;color:var(--muted)}
.bars{display:grid;gap:8px;margin-top:10px}
.bar{display:grid;grid-template-columns:130px 1fr 32px;gap:10px;align-items:center;font-size:13px;color:var(--text-2)}
.bar i{display:block;height:8px;background:var(--line);position:relative}
.bar i b{position:absolute;inset:0 auto 0 0;background:var(--red)}
.bar em{font-style:normal;font-family:var(--mono);font-size:12px;text-align:right;color:var(--muted)}
.toolbar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-bottom:16px}
.toolbar input,.toolbar select{font:inherit;font-size:15px;color:var(--text);background:var(--surface);border:1px solid var(--line-strong);border-radius:4px;padding:9px 12px}
.toolbar .spacer{flex:1}
.table-wrap{overflow-x:auto;border:1px solid var(--line)}
table{border-collapse:collapse;width:100%;font-size:14px;min-width:980px}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);background:var(--surface);white-space:nowrap}
tr:hover td{background:rgba(22,32,43,.6)}
td .pill{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;background:var(--surface);border:1px solid var(--line-strong);margin:2px 2px 2px 0;white-space:nowrap}
td .pill.red{background:rgba(225,7,19,.15);border-color:var(--red);color:#fff}
td .msg{max-width:320px;color:var(--muted);white-space:pre-wrap}
td .del{background:none;border:1px solid var(--line-strong);color:var(--muted);border-radius:4px;padding:4px 8px;font-family:var(--mono);font-size:11px;cursor:pointer}
td .del:hover{border-color:var(--red);color:var(--red-hi)}
.empty{padding:40px;text-align:center;color:var(--muted)}
@media (max-width:900px){.tiles{grid-template-columns:repeat(2,1fr)}}

[hidden]{display:none!important}