/* FTChallenge — feuille de style partagée */

:root{
  --vert-fonce:#164529;
  --vert:#1F5D3A;
  --vert-gain:#2E7D32;
  --or:#C4912D;
  --or-fonce:#B8863B;
  --creme:#FBF9F3;
  --carte:#FFFFFF;
  --bordure:#E9E2CC;
  --texte:#233229;
  --texte-clair:#5B6B60;
  --rouge:#C62828;
  --bleu:#1565C0;
  --orange:#E67E22;
  --ombre:0 2px 10px rgba(31,93,58,0.08);
}

*{box-sizing:border-box;}

html{scroll-behavior:smooth;}

body{
  margin:0;
  background:var(--creme);
  color:var(--texte);
  font-family:"IBM Plex Sans", -apple-system, Segoe UI, sans-serif;
  line-height:1.6;
}

h1,h2,h3,.oswald{
  font-family:"Oswald", "IBM Plex Sans", sans-serif;
  font-weight:600;
  letter-spacing:.01em;
  color:var(--vert);
  margin:0 0 .5em;
}

.mono{font-family:"IBM Plex Mono", monospace;}

a{color:var(--vert);}

img{display:block;max-width:100%;}

.wrap{max-width:1080px;margin:0 auto;padding:0 24px;}

/* ---------- entête ---------- */
header.site{
  position:sticky;top:0;z-index:20;
  background:rgba(251,249,243,.92);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--bordure);
}
header.site .wrap{
  display:flex;align-items:center;justify-content:space-between;
  padding-top:12px;padding-bottom:12px;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;}
.brand img{height:34px;width:auto;}
.brand span{
  font-family:"Oswald",sans-serif;font-weight:700;font-size:19px;color:var(--vert);
}
.brand span b{color:var(--or-fonce);}
nav.principale{display:flex;gap:26px;}
nav.principale a{
  font-size:14.5px;font-weight:500;text-decoration:none;color:var(--texte);
  border-bottom:2px solid transparent;padding-bottom:2px;
}
nav.principale a:hover{border-bottom-color:var(--or);}
.nav-toggle{display:none;}

/* ---------- hero ---------- */
.hero{
  background:linear-gradient(150deg,var(--vert) 0%,var(--vert-fonce) 100%);
  padding:64px 0 72px;
  text-align:center;
  color:#fff;
}
.hero img.logo{max-width:520px;width:90%;margin:0 auto 28px;}
.hero p.tagline{
  font-family:"Oswald",sans-serif;font-size:22px;font-weight:500;
  color:#F3E8CE;margin:0 0 14px;
}
.hero p.sous{
  max-width:620px;margin:0 auto 34px;font-size:16.5px;color:#E7EFE9;
}
.cta-row{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}
.btn{
  display:inline-block;padding:13px 26px;border-radius:8px;
  font-weight:600;font-size:15px;text-decoration:none;
  transition:transform .15s ease, box-shadow .15s ease;
  border:2px solid transparent;
}
.btn:hover{transform:translateY(-1px);}
.btn-or{background:var(--or);color:#1c2a20;border-color:var(--or);}
.btn-or:hover{box-shadow:0 6px 16px rgba(196,145,45,.35);}
.btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.55);}
.btn-outline:hover{background:rgba(255,255,255,.1);}
.btn-vert{background:var(--vert);color:#fff;}
.btn-vert:hover{box-shadow:0 6px 16px rgba(31,93,58,.3);}

/* ---------- sections génériques ---------- */
section{padding:64px 0;}
section.alt{background:#F5F1E4;}
.eyebrow{
  font-family:"Oswald",sans-serif;text-transform:uppercase;letter-spacing:.14em;
  font-size:12.5px;color:var(--or-fonce);font-weight:600;margin-bottom:6px;display:block;
}
h2.titre{font-size:28px;margin-bottom:14px;}
p.intro{max-width:680px;color:var(--texte-clair);font-size:16px;margin-bottom:38px;}

/* ---------- carte générique ---------- */
.carte{
  background:var(--carte);border:1px solid var(--bordure);border-radius:14px;
  box-shadow:var(--ombre);padding:26px;
}

/* ---------- concept ---------- */
.concept-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:start;}
.concept-grid p{margin:0 0 16px;color:var(--texte);}
.stat-carte{background:var(--vert);color:#fff;border-radius:14px;padding:26px;}
.stat-carte .valeur{font-family:"IBM Plex Mono",monospace;font-size:30px;font-weight:600;color:#F3E8CE;}
.stat-carte .label{font-size:13.5px;color:#DCE7DF;margin-bottom:18px;}
.stat-ligne{display:flex;justify-content:space-between;padding:10px 0;border-top:1px solid rgba(255,255,255,.16);}
.stat-ligne:first-of-type{border-top:none;}

/* ---------- étapes ---------- */
.etapes{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.etape{background:var(--carte);border:1px solid var(--bordure);border-radius:14px;padding:24px 20px;box-shadow:var(--ombre);}
.etape .num{
  font-family:"Oswald",sans-serif;font-size:15px;font-weight:700;color:#fff;
  background:var(--vert);width:30px;height:30px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;
}
.etape h3{font-size:17px;margin-bottom:8px;color:var(--vert);}
.etape p{font-size:14.5px;color:var(--texte-clair);margin:0;}

/* ---------- fonctionnalités ---------- */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.feat{background:var(--carte);border:1px solid var(--bordure);border-radius:14px;padding:22px;box-shadow:var(--ombre);}
.feat .badge{
  width:38px;height:38px;border-radius:9px;display:flex;align-items:center;justify-content:center;
  font-family:"Oswald",sans-serif;font-weight:700;font-size:16px;color:#fff;margin-bottom:14px;
}
.feat h3{font-size:16.5px;margin-bottom:6px;color:var(--vert);}
.feat p{font-size:14px;color:var(--texte-clair);margin:0;}

/* ---------- bêta / lancement ---------- */
.beta{
  background:#EFF6F0;border:1px solid #CFE3D3;border-radius:16px;padding:32px;
  display:flex;gap:26px;align-items:center;flex-wrap:wrap;
}
.beta .puce{
  flex:0 0 auto;width:52px;height:52px;border-radius:50%;background:var(--vert);
  color:#fff;display:flex;align-items:center;justify-content:center;
  font-family:"Oswald",sans-serif;font-weight:700;font-size:20px;
}
.beta .texte{flex:1;min-width:240px;}
.beta h3{margin:0 0 6px;font-size:18px;color:var(--vert);}
.beta p{margin:0;color:var(--texte-clair);font-size:14.5px;}

/* ---------- téléchargement ---------- */
.dl-carte{
  display:flex;gap:28px;align-items:center;background:var(--carte);
  border:1px solid var(--bordure);border-radius:16px;padding:30px;box-shadow:var(--ombre);
  flex-wrap:wrap;
}
.dl-carte img{width:96px;height:96px;border-radius:22px;flex:0 0 auto;}
.dl-carte .txt{flex:1;min-width:240px;}
.dl-carte h3{margin:0 0 6px;font-size:19px;}
.dl-carte p{margin:0 0 16px;color:var(--texte-clair);font-size:14.5px;}
.plateforme{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:var(--texte-clair);
  border:1px solid var(--bordure);padding:4px 10px;border-radius:20px;margin-bottom:14px;
}

/* ---------- règlement teaser ---------- */
.reglement-teaser{
  background:var(--vert);color:#fff;border-radius:16px;padding:34px;
  display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;
}
.reglement-teaser h3{color:#fff;font-size:20px;margin:0 0 8px;}
.reglement-teaser p{margin:0;color:#DCE7DF;font-size:14.5px;max-width:520px;}

/* ---------- footer ---------- */
footer.site{background:var(--vert-fonce);color:#CFE0D3;padding:34px 0;}
footer.site .wrap{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px;}
footer.site p{margin:0;font-size:13px;}
footer.site a{color:#F3E8CE;}

/* ---------- page règlement ---------- */
header.compact{background:var(--vert);color:#fff;padding:0;}
header.compact .wrap{display:flex;align-items:center;gap:14px;padding:16px 24px;}
header.compact a.retour{color:#fff;text-decoration:none;font-size:20px;line-height:1;}
header.compact img{height:24px;}
header.compact h1{color:#fff;font-size:17px;margin:0;}

main.reglement{max-width:760px;margin:0 auto;padding:44px 24px 80px;}
main.reglement h2{
  font-size:21px;margin-top:44px;padding-bottom:8px;border-bottom:2px solid var(--bordure);
}
main.reglement h2:first-of-type{margin-top:0;}
main.reglement p{margin:0 0 16px;}
main.reglement ul{margin:0 0 16px;padding-left:22px;}
main.reglement li{margin-bottom:8px;}
.formule{
  font-family:"IBM Plex Mono",monospace;background:#F5F1E4;border:1px solid var(--bordure);
  border-radius:10px;padding:16px 18px;margin:0 0 18px;font-size:14.5px;font-weight:600;color:var(--vert);
}
.exemple{
  background:#FBF7EC;border-left:4px solid var(--or);border-radius:0 10px 10px 0;
  padding:14px 18px;margin:0 0 18px;font-size:14.5px;font-style:italic;color:#5B4B2A;
}
.encadre{
  background:#EFF6F0;border:1px solid #CFE3D3;border-radius:10px;padding:16px 18px;margin:0 0 18px;font-size:14.5px;
}
.intro-reglement{color:var(--texte-clair);font-size:15px;margin-bottom:6px;}
.fin-reglement{
  text-align:center;font-family:"Oswald",sans-serif;color:var(--or-fonce);
  font-size:17px;margin-top:48px;
}

/* ---------- responsive ---------- */
@media (max-width:820px){
  .etapes{grid-template-columns:repeat(2,1fr);}
  .feat-grid{grid-template-columns:repeat(2,1fr);}
  .concept-grid{grid-template-columns:1fr;}
}
@media (max-width:600px){
  nav.principale{display:none;}
  .etapes{grid-template-columns:1fr;}
  .feat-grid{grid-template-columns:1fr;}
  .hero{padding:48px 0 56px;}
  section{padding:48px 0;}
  .dl-carte,.reglement-teaser{flex-direction:column;text-align:center;justify-content:center;}
}