@import url('https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@12..96,500..800&family=Inter:wght@400;500;600;700&display=swap');
/* ==========================================================================
   Arbor — design system (charte validée : forêt & feu)
   Surface « façade » = crème éditoriale · surface « instrument » = vert forêt
   ========================================================================== */
:root{
  color-scheme:light dark;
  /* Palette de marque (fixe) */
  --foret:#1B3B2E; --carte:#244F3F; --encre:#121212;
  --sauge:#9CC4AE; --creme:#F4EFE3; --feu:#D7301F; --braise:#E8A33D;

  /* Tokens de thème — façade claire par défaut */
  --ground:#F4EFE3; --panel:#FBF8F1; --ink:#16241D; --muted:#5B6B60;
  --line:#E1D9C6; --accent:#2C6E4B; --accent-soft:#E7EFE7; --accent-ink:#0F3324;
  --shadow:0 1px 2px rgba(20,30,24,.04), 0 8px 20px -12px rgba(20,30,24,.14), 0 28px 56px -30px rgba(20,30,24,.28);
  --shadow-hover:0 2px 4px rgba(20,30,24,.05), 0 18px 40px -18px rgba(20,30,24,.28);

  --sans:"Inter","Helvetica Neue",Helvetica,Arial,"Segoe UI",Roboto,system-ui,sans-serif;
  --display:"Bricolage Grotesque","Inter",system-ui,sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --r:16px; --maxw:1120px;
}
@media (prefers-color-scheme:dark){
  :root{ --ground:#12241C; --panel:#1B3B2E; --ink:#F1ECE0; --muted:#9DB1A4;
    --line:#2C4638; --accent:#9CC4AE; --accent-soft:#1F4030; --accent-ink:#12241C;
    --shadow:0 1px 2px rgba(0,0,0,.4), 0 24px 48px -26px rgba(0,0,0,.7); }
}
:root[data-theme="light"]{ --ground:#F4EFE3; --panel:#FBF8F1; --ink:#16241D; --muted:#5B6B60;
  --line:#E1D9C6; --accent:#2C6E4B; --accent-soft:#E7EFE7; --accent-ink:#0F3324;
  --shadow:0 1px 2px rgba(20,30,24,.05), 0 20px 44px -26px rgba(20,30,24,.30); }
:root[data-theme="dark"]{ --ground:#12241C; --panel:#1B3B2E; --ink:#F1ECE0; --muted:#9DB1A4;
  --line:#2C4638; --accent:#9CC4AE; --accent-soft:#1F4030; --accent-ink:#12241C;
  --shadow:0 1px 2px rgba(0,0,0,.4), 0 24px 48px -26px rgba(0,0,0,.7); }

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--ground);color:var(--ink);font-family:var(--sans);
  line-height:1.6;-webkit-font-smoothing:antialiased;letter-spacing:-.011em}
h1,h2,h3{margin:0;font-family:var(--display);font-weight:700;letter-spacing:-.028em;
  line-height:1.04;text-wrap:balance;font-optical-sizing:auto}
p{margin:0} a{color:inherit}
img{max-width:100%}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:.72rem;text-transform:uppercase;
  letter-spacing:.16em;font-weight:680;color:var(--accent)}
.eyebrow::before{content:"";width:24px;height:1.5px;background:currentColor;opacity:.55;border-radius:2px}

/* Boutons */
.btn{font:inherit;font-weight:620;font-size:.94rem;border-radius:999px;padding:12px 22px;
  border:1px solid transparent;cursor:pointer;letter-spacing:-.01em;display:inline-flex;
  align-items:center;gap:8px;text-decoration:none;transition:transform .12s ease, filter .12s ease}
.btn:hover{filter:brightness(1.04)} .btn:active{transform:translateY(1px)}
.btn.primary{background:var(--foret);color:var(--creme);box-shadow:0 8px 20px -10px rgba(27,59,46,.55)}
.btn.accent{background:var(--sauge);color:var(--encre)}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* Badges */
.badge{display:inline-block;font-size:.66rem;font-weight:700;text-transform:uppercase;
  letter-spacing:.03em;padding:3px 9px;border-radius:999px}
.badge.mes{background:color-mix(in srgb,var(--accent) 15%,transparent);color:var(--accent)}
.badge.est{background:color-mix(in srgb,var(--braise) 24%,transparent);color:#9A5B10}

/* Nav */
.nav{position:sticky;top:0;z-index:60;background:color-mix(in srgb,var(--ground) 88%,transparent);
  backdrop-filter:saturate(1.2) blur(8px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{display:flex;align-items:center;gap:9px;font-weight:700;letter-spacing:-.02em;
  text-decoration:none;color:var(--ink);font-size:1.05rem}
.brand .mark{width:22px;height:22px;flex:none}
.brand-logo{height:26px;width:auto;display:block}
@media (max-width:600px){ .brand-logo{height:22px} }
.brand small{font-weight:500;color:var(--muted);font-size:.66rem;letter-spacing:.02em}
.nav-links{display:flex;gap:24px;font-size:.9rem;color:var(--muted)}
.nav-links a{text-decoration:none} .nav-links a:hover{color:var(--ink)}
/* Bouton hamburger (mobile) */
.burger{display:none;border:1px solid var(--line);background:var(--panel);color:var(--ink);
  width:40px;height:40px;border-radius:10px;cursor:pointer;font-size:1.2rem;line-height:1;
  align-items:center;justify-content:center;flex:none}
@media (max-width:820px){
  .nav .wrap{position:relative}
  .burger{display:inline-flex}
  /* Les liens deviennent un menu déroulant sous la barre */
  .nav-links{position:absolute;top:100%;left:0;right:0;flex-direction:column;gap:0;
    background:var(--ground);border-bottom:1px solid var(--line);box-shadow:var(--shadow);
    padding:6px 0;transform:translateY(-8px);opacity:0;pointer-events:none;transition:.16s ease}
  .nav.menu-open .nav-links{transform:none;opacity:1;pointer-events:auto}
  .nav-links a{padding:13px 24px;font-size:1rem;color:var(--ink)}
  .nav-links a:hover{background:var(--panel)}
}
@media (max-width:600px){
  .nav .wrap{height:54px}
  .brand small{display:none}
  .nav .btn{padding:8px 13px;font-size:.8rem}
}

/* Sections */
section{padding:70px 0;border-top:1px solid var(--line)}
/* Apparition douce au scroll (progressive enhancement — ajouté par JS) */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .7s cubic-bezier(.2,.7,.3,1), transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){ .reveal{opacity:1;transform:none;transition:none} }
.sec-head{max-width:62ch;margin-bottom:32px;display:flex;flex-direction:column;gap:12px}
.sec-head h2{font-size:clamp(1.7rem,3vw,2.2rem)} .sec-head p{color:var(--muted);font-size:1.05rem;line-height:1.55}

/* Cartes / stats / steps */
.grid{display:grid;gap:16px}
.g3{grid-template-columns:repeat(3,1fr)} .g2{grid-template-columns:1fr 1fr}
@media (max-width:760px){ .g3,.g2{grid-template-columns:1fr} }
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:24px;
  transition:transform .22s cubic-bezier(.2,.7,.3,1), box-shadow .22s ease, border-color .22s ease}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);
  border-color:color-mix(in srgb,var(--accent) 30%,var(--line))}
.stat .n{font-family:var(--display);font-size:2.6rem;font-weight:720;letter-spacing:-.03em;
  font-variant-numeric:tabular-nums;line-height:1}
.stat .n small{font-size:1rem;font-weight:640;color:var(--accent);font-family:var(--sans)}
.stat .k{margin-top:10px;font-size:.92rem;color:var(--muted);line-height:1.45}
.step{display:flex;gap:16px;align-items:flex-start}
.step .n{flex:none;width:46px;height:46px;border-radius:14px;background:var(--accent-soft);
  color:var(--accent);display:grid;place-items:center;font-family:var(--display);font-size:1.2rem;font-weight:700}
.step h3{font-size:1.08rem;font-weight:660} .step p{font-size:.92rem;color:var(--muted);margin-top:4px;line-height:1.5}

/* Champ d'adresse */
.addr{display:flex;gap:8px;flex-wrap:wrap}
.addr input{flex:1;min-width:170px;border:1px solid var(--line);background:var(--panel);
  border-radius:10px;padding:13px 15px;font:inherit;font-size:.96rem;color:var(--ink)}
.addr input:focus-visible{outline:2px solid var(--accent);outline-offset:1px}

/* Footer */
.foot{background:var(--foret);color:#BFD0C4}
.foot .wrap{padding:40px 24px}
.foot .avert{font-size:.82rem;line-height:1.55;max-width:80ch} .foot .avert b{color:var(--creme)}
.foot .fine{margin-top:20px;padding-top:18px;border-top:1px solid rgba(156,196,174,.18);
  font-size:.76rem;color:#8AA093;display:flex;flex-wrap:wrap;gap:6px 20px}
.foot a{text-decoration:none}

@media (prefers-reduced-motion:reduce){ *{transition:none!important;scroll-behavior:auto!important} }