/* ===== Nature IOT — styles.css =====
   Identité alignée sur la page Flash Utility (/prestemp/) :
   header fixe blanc, panels avec ombre portée, JetBrains Mono
   pour les éléments techniques, Space Grotesk pour les titres. */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root{
  --bg:#f3f1ec;
  --panel:#ffffff;
  --panel-2:#ece9e1;
  --border:#dcd8cf;
  --text:#2b3234;
  --muted:#5b6567;
  --accent:#2f6f6b;
  --accent-hover:#255551;
  --accent-soft:#e3efed;
  --warn:#a6691f;
  --warn-soft:#fbead0;
  --danger:#b91c1c;
  --danger-soft:#fbe6e5;
  --header-h:85px;
  --radius:12px;
  --maxw:1080px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  padding-top:var(--header-h);
  background:var(--bg);
  color:var(--text);
  font-family:'Inter',system-ui,sans-serif;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{
  font-family:'Space Grotesk',sans-serif;
  color:#14181a;
  line-height:1.2;
  margin:0 0 .5em;
}
a{color:var(--accent);text-decoration:none;}
a:hover{color:var(--warn);}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:3px solid var(--warn);
  outline-offset:2px;
}
img{max-width:100%;display:block;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;}

input,select,button,label{
  font-family:'JetBrains Mono',monospace;
  font-weight:500;
}

/* ---- Header (fixe, comme le flasher) ---- */
.site-header{
  position:fixed;top:0;left:0;right:0;
  height:var(--header-h);
  background:var(--panel);
  border-bottom:1px solid var(--border);
  box-shadow:0 1px 2px rgba(20,30,45,.04);
  z-index:1000;
}
.site-header .wrap{
  height:100%;
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;
}
.brand{display:flex;align-items:center;gap:12px;color:var(--text);}
.brand img{
  width:40px;height:40px;border-radius:8px;
  border:1px solid var(--accent);
  background:var(--accent-soft);
  padding:4px;
}
.brand span{
  font-family:'Space Grotesk',sans-serif;
  font-weight:700;font-size:1.1rem;color:#14181a;
}
.main-nav ul{list-style:none;display:flex;gap:24px;margin:0;padding:0;}
.main-nav a{
  color:var(--muted);
  font-family:'JetBrains Mono',monospace;
  font-size:.8rem;letter-spacing:.03em;text-transform:uppercase;
  padding:6px 2px;border-bottom:2px solid transparent;
}
.main-nav a:hover,.main-nav a.active{
  color:var(--accent);border-bottom-color:var(--accent);
}

/* ---- Menu burger (mobile) ---- */
.nav-toggle{display:none;}
.nav-toggle-btn{
  display:none;
  flex-direction:column;justify-content:center;gap:5px;
  width:34px;height:34px;
  cursor:pointer;
}
.nav-toggle-btn span{
  display:block;height:2px;width:100%;
  background:var(--text);border-radius:2px;
}
.nav-toggle:checked ~ .nav-toggle-btn span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle:checked ~ .nav-toggle-btn span:nth-child(2){opacity:0;}
.nav-toggle:checked ~ .nav-toggle-btn span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---- "Hero" devenu bandeau léger type sous-titre (comme .subheader du flasher) ---- */
.hero{
  background:var(--bg);
  border-bottom:1px solid var(--border);
  padding:1.75rem 0 1.5rem;
}
.eyebrow{
  font-family:'JetBrains Mono',monospace;
  text-transform:uppercase;letter-spacing:.08em;font-size:.72rem;
  color:var(--muted);margin-bottom:10px;
}
.hero h1{font-size:clamp(1.5rem,3vw,2.1rem);}
.hero p.lead{max-width:60ch;color:var(--muted);font-size:.98rem;}

/* ---- Sections / panels ---- */
section{padding:2rem 0;}
section.alt{background:transparent;}
.prose{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:0 1px 2px rgba(20,30,45,.04);
  padding:1.75rem 2rem;
}
.prose p{max-width:70ch;}
.prose p + p{margin-top:1em;}

/* ---- Cards ---- */
.card-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
  gap:24px;margin-top:32px;
}
.card{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:0 1px 2px rgba(20,30,45,.04);
  padding:1.5rem;
  display:flex;flex-direction:column;gap:10px;
  transition:transform .15s ease, box-shadow .15s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(20,30,45,.08);}
.card h3{font-size:1.1rem;margin-bottom:0;}
.card .price-tag{
  font-family:'JetBrains Mono',monospace;
  font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;
  color:var(--accent);
}
.card-img-placeholder{
  aspect-ratio:4/3;border-radius:8px;
  border:1.5px dashed var(--border);
  display:flex;align-items:center;justify-content:center;
  color:var(--muted);font-size:.85rem;text-align:center;
  background:repeating-linear-gradient(135deg, #fff 0 10px, var(--panel-2) 10px 20px);
}
.brand-sub{
  color:var(--muted);
  font-size:.8rem;
  font-family:'JetBrains Mono',monospace;
  margin-top:.75rem;
}
.brand-sub a{color:var(--accent);text-decoration:none;}
.brand-sub a:hover{color:var(--warn);text-decoration:underline;}

/* ---- Buttons ---- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--accent);color:#fff;
  font-family:'JetBrains Mono',monospace;
  font-weight:700;font-size:.85rem;
  padding:.75rem 1.25rem;border-radius:8px;border:none;
  cursor:pointer;transition:background .15s ease;
}
.btn:hover{background:var(--accent-hover);color:#fff;}
.btn.amber{background:var(--warn);color:#fff;}
.btn.amber:hover{background:#8a5c19;}
.btn.ghost{background:transparent;color:var(--accent);border:1.5px solid var(--accent);}
.btn.ghost:hover{background:var(--accent-soft);color:var(--accent);}

/* ---- Forms ---- */
.field{margin-bottom:18px;}
.field label{
  display:block;font-size:.78rem;font-weight:600;
  text-transform:uppercase;letter-spacing:.04em;
  margin-bottom:6px;color:var(--muted);
}
.field input,.field textarea{
  width:100%;padding:.7rem 1rem;
  border:1px solid var(--border);border-radius:8px;
  font-family:'JetBrains Mono',monospace;font-size:.9rem;
  background:var(--panel-2);color:var(--text);
}
.field input:focus,.field textarea:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 3px var(--accent-soft);
}
.field textarea{min-height:150px;resize:vertical;}
.form-note{
  font-family:'Inter',sans-serif;
  font-size:.85rem;color:var(--text);
  background:var(--accent-soft);border-left:3px solid var(--accent);
  border-radius:8px;padding:.9rem 1.1rem;margin-bottom:24px;
}
.form-note.warn{background:var(--warn-soft);border-left-color:var(--warn);}

/* ---- Pages légales (mentions, CGV) ---- */
.prose ul{margin:.4em 0 .4em 1.3em;padding:0;}
.prose li{margin:.25em 0;}
.info-box{
  background:var(--panel);border:1px solid var(--border);
  border-radius:var(--radius);box-shadow:0 1px 2px rgba(20,30,45,.04);
  padding:1rem 1.2rem;margin:14px 0;
}
.info-box p{margin:.3em 0;}
.form-model{
  border:1px dashed var(--border);border-radius:var(--radius);
  padding:1rem 1.2rem;margin:14px 0;background:var(--panel-2);
}
.fill{
  background:var(--warn-soft);padding:0 4px;border-radius:4px;
  font-weight:600;color:var(--warn);
}

/* ---- Footer ---- */
.site-footer{
  background:transparent;color:var(--muted);
  font-family:'JetBrains Mono',monospace;font-size:.78rem;
  border-top:1px solid var(--border);
  padding:1.5rem 0 2rem;margin-top:2rem;
}
.site-footer .wrap{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
}
.site-footer a{color:var(--accent);}
.site-footer a:hover{color:var(--warn);text-decoration:underline;}

@media (max-width:700px){
  .nav-toggle-btn{display:flex;}
  .main-nav{
    display:none;
    position:absolute;
    top:var(--header-h);left:0;right:0;
    background:var(--panel);
    border-bottom:1px solid var(--border);
    box-shadow:0 8px 16px rgba(20,30,45,.08);
  }
  .nav-toggle:checked ~ .main-nav{display:block;}
  .main-nav ul{flex-direction:column;gap:0;padding:6px 24px 14px;}
  .main-nav li{border-top:1px solid var(--border);}
  .main-nav li:first-child{border-top:none;}
  .main-nav a{display:block;padding:14px 2px;border-bottom:none;}
}