/* ============================================================
   RMS EcoSky — Design tokens
   Palette : sable résine, ardoise bretonne, nuit (bordure EPDM), sauge éco
   Typo : Fraunces (display) / Public Sans (texte) / IBM Plex Mono (technique)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,300;9..144,400;9..144,500;9..144,600;9..144,700&family=Public+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root{
  --sable: #C7A579;
  --sable-clair: #E4D3B4;
  --ardoise: #2E3532;
  --ardoise-2: #465049;
  --nuit: #14181A;
  --sauge: #5C7A5E;
  --sauge-clair: #7C9A7E;
  --ivoire: #F5F2EB;
  --ivoire-2: #EBE5D8;
  --blanc: #FFFDF9;

  --display: 'Fraunces', serif;
  --texte: 'Public Sans', sans-serif;
  --mono: 'IBM Plex Mono', monospace;

  --border-w: 6px;
  --radius: 22px;

  --max: 1180px;
}

*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family: var(--texte);
  background: var(--ivoire);
  color: var(--ardoise);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img{max-width:100%; display:block;}
a{color:inherit;}

::selection{ background: var(--sable); color: var(--nuit); }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ---------- utility ---------- */
.wrap{ max-width: var(--max); margin:0 auto; padding: 0 28px; }
.eyebrow{
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sauge);
  display:flex; align-items:center; gap:10px;
}
.eyebrow::before{
  content:''; width:22px; height:2px; background: var(--sauge); display:inline-block;
}
h1,h2,h3{ font-family: var(--display); font-weight: 600; line-height: 1.08; color: var(--nuit); }
h1{ font-size: clamp(2.4rem, 5.5vw, 4.4rem); font-weight: 500; letter-spacing: -0.01em; }
h2{ font-size: clamp(1.9rem, 3.4vw, 2.7rem); }
h3{ font-size: 1.3rem; }
p.lead{ font-size: 1.15rem; color: var(--ardoise-2); max-width: 52ch; }

/* ---------- resin edge motif (signature element) ---------- */
.resin-card{
  background: var(--blanc);
  border: var(--border-w) solid var(--nuit);
  border-radius: var(--radius);
  position: relative;
}
.resin-swatch{
  background: linear-gradient(155deg, var(--sable-clair) 0%, var(--sable) 55%, #B8925E 100%);
  border: var(--border-w) solid var(--nuit);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
}
.resin-swatch img{
  position:absolute; inset:0;
  width:100%; height:100%;
  object-fit: cover;
  border-radius: calc(var(--radius) - var(--border-w));
}
.resin-swatch::after{
  content:'';
  position:absolute; inset:0;
  background-image:
    radial-gradient(circle at 18% 30%, rgba(20,24,26,0.10) 0 2px, transparent 3px),
    radial-gradient(circle at 62% 68%, rgba(20,24,26,0.10) 0 2.4px, transparent 3.4px),
    radial-gradient(circle at 40% 82%, rgba(255,255,255,0.35) 0 1.8px, transparent 2.8px),
    radial-gradient(circle at 82% 22%, rgba(20,24,26,0.08) 0 2px, transparent 3px),
    radial-gradient(circle at 30% 55%, rgba(255,255,255,0.28) 0 1.6px, transparent 2.6px);
  background-size: 46px 46px, 60px 60px, 38px 38px, 70px 70px, 34px 34px;
  mix-blend-mode: multiply;
  opacity: 0.9;
}

/* ---------- nav ---------- */
header.site{
  position: sticky; top:0; z-index:50;
  background: rgba(245,242,235,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 2px solid var(--nuit);
}
nav.wrap{
  display:flex; align-items:center; justify-content:space-between;
  height: 78px;
}
.logo{
  display:flex; align-items:center; text-decoration:none;
}
.logo img{ height: 52px; width:auto; display:block; }
.navlinks{ display:flex; gap:34px; list-style:none; font-size:0.95rem; font-weight:500; }
.navlinks a{ text-decoration:none; position:relative; padding: 4px 0; }
.navlinks a::after{
  content:''; position:absolute; left:0; right:100%; bottom:-2px; height:2px; background: var(--sauge);
  transition: right 0.25s ease;
}
.navlinks a:hover::after, .navlinks a.active::after{ right:0; }
.navlinks a.active{ color: var(--sauge); }
.btn{
  font-family: var(--texte); font-weight:600; font-size:0.92rem;
  padding: 12px 24px; border-radius: 999px;
  border: 2px solid var(--nuit);
  background: var(--nuit); color: var(--ivoire);
  text-decoration:none; display:inline-flex; align-items:center; gap:8px;
  transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease;
}
.btn:hover{ background: var(--sauge); border-color: var(--sauge); transform: translateY(-2px); }
.btn.outline{ background: transparent; color: var(--nuit); }
.btn.outline:hover{ background: var(--nuit); color: var(--ivoire); }
.burger{ display:none; }

footer.site{
  background: var(--nuit); color: var(--ivoire-2);
  margin-top: 120px;
  padding: 64px 0 28px;
}
footer.site .wrap{ display:grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 48px; }
footer.site h4{ font-family: var(--mono); font-size:0.78rem; letter-spacing:0.1em; text-transform:uppercase; color: var(--sable); margin-bottom:16px; }
footer.site a{ text-decoration:none; color: var(--ivoire-2); opacity:0.85; }
footer.site a:hover{ opacity:1; text-decoration:underline; }
footer.site .foot-logo{ font-family: var(--display); font-size:1.5rem; color: var(--blanc); margin-bottom:10px; }
footer.site .legal{
  border-top: 1px solid rgba(255,255,255,0.15); margin-top:48px; padding-top:22px;
  font-family: var(--mono); font-size:0.72rem; color: rgba(255,255,255,0.5);
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px;
}

@media (max-width: 860px){
  .navlinks{
    position:fixed;
    top: 78px; left: 0; right: 0; bottom: 0;
    width: 100%;
    z-index: 100;
    background: var(--ivoire);
    flex-direction:column; padding: 40px 28px; gap:26px; font-size:1.2rem;
    transform: translateX(100%); transition: transform 0.3s ease;
    overflow-y: auto;
  }
  .navlinks.open{ transform: translateX(0); }
  .burger{
    display:flex; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:8px;
    z-index: 101;
  }
  .burger span{ width:24px; height:2px; background: var(--nuit); }
  .btn.nav-cta{ display:none; }
  footer.site .wrap{ grid-template-columns: 1fr; gap:32px; }
}