:root{
    --ardoise:#20241E;
    --ardoise-soft:#2C3128;
    --platre:#EAE2CB;
    --platre-soft:#F3EEDF;
    --cuivre:#A9713F;
    --cuivre-soft:#C79463;
    --bleu-plan:#2C4A5E;
    --brique:#AE4530;
    --ink:#20241E;
    --line: rgba(32,36,30,0.14);
    --line-light: rgba(234,226,203,0.22);
    --radius: 2px;
    --max: 1180px;
    font-size: 16px;
  }

  *,*::before,*::after{ box-sizing:border-box; }
  html{ scroll-behavior:smooth; }
  @media (prefers-reduced-motion: reduce){
    html{ scroll-behavior:auto; }
    *,*::before,*::after{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; }
  }

  body{
    margin:0;
    background:var(--platre-soft);
    color:var(--ink);
    font-family:'Work Sans', sans-serif;
    font-size:1rem;
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
  }

  h1,h2,h3{
    font-family:'Fraunces', serif;
    font-weight:500;
    letter-spacing:-0.01em;
    margin:0;
    color:var(--ardoise);
  }

  a{ color:inherit; }

  .eyebrow{
    font-family:'JetBrains Mono', monospace;
    font-size:0.72rem;
    letter-spacing:0.16em;
    text-transform:uppercase;
    color:var(--cuivre);
    display:inline-flex;
    align-items:center;
    gap:0.6em;
  }
  .eyebrow::before{
    content:"";
    width:1.4em;
    height:1px;
    background:var(--cuivre);
    display:inline-block;
  }

  .wrap{ max-width:var(--max); margin:0 auto; padding:0 clamp(1.25rem, 4vw, 2.5rem); }

  /* Skip link */
  .skip-link{
    position:absolute; left:-999px; top:0; z-index:200;
    background:var(--ardoise); color:var(--platre); padding:0.8em 1.2em;
    font-family:'JetBrains Mono', monospace; font-size:0.85rem;
  }
  .skip-link:focus{ left:1rem; top:1rem; }

  :focus-visible{
    outline: 2px solid var(--cuivre);
    outline-offset: 3px;
  }

  /* ---------- Header ---------- */
  header{
    position:sticky; top:0; z-index:100;
    background:rgba(243,238,223,0.92);
    backdrop-filter:blur(6px);
    border-bottom:1px solid var(--line);
  }
  .nav-row{
    display:flex; flex-direction:column; align-items:center; justify-content:center;
    padding:1.2rem 0;
    gap:0.7rem;
  }
  .logo{
    font-family:'Fraunces', serif;
    font-size:1.25rem;
    font-weight:600;
    letter-spacing:-0.01em;
    text-decoration:none;
    color:var(--ardoise);
  }
  .logo em{
    font-style:italic;
    font-weight:400;
    color:var(--cuivre);
  }
  nav.primary-nav ul{
    list-style:none; display:flex; justify-content:center; gap:2rem; margin:0; padding:0;
  }
  nav.primary-nav a{
    text-decoration:none;
    font-size:0.92rem;
    color:var(--ardoise);
    position:relative;
    padding-bottom:2px;
  }
  nav.primary-nav a::after{
    content:""; position:absolute; left:0; bottom:-2px; height:1px; width:0;
    background:var(--cuivre); transition:width 0.25s ease;
  }
  nav.primary-nav a:hover::after, nav.primary-nav a:focus-visible::after{ width:100%; }

  .btn{
    display:inline-flex; align-items:center; gap:0.5em;
    font-family:'JetBrains Mono', monospace;
    font-size:0.78rem;
    letter-spacing:0.05em;
    text-transform:uppercase;
    text-decoration:none;
    padding:0.85em 1.4em;
    border:1px solid var(--ardoise);
    border-radius:var(--radius);
    background:transparent;
    color:var(--ardoise);
    cursor:pointer;
    transition:background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  }
  .btn:hover{ background:var(--ardoise); color:var(--platre); }
  .btn.primary{ background:var(--cuivre); border-color:var(--cuivre); color:var(--platre-soft); }
  .btn.primary:hover{ background:var(--brique); border-color:var(--brique); }
  .btn.on-dark{ border-color:var(--platre); color:var(--platre); }
  .btn.on-dark:hover{ background:var(--platre); color:var(--ardoise); }

  .nav-cta{ display:flex; }
  .menu-toggle{ display:none; }

  /* ---------- Hero ---------- */
  .hero{
    padding:clamp(3rem, 8vw, 6rem) 0 clamp(2.5rem, 6vw, 4rem);
    position:relative;
    overflow:hidden;
  }
  .hero::before{
    content:"";
    position:absolute; inset:0;
    background-image:
      linear-gradient(var(--line) 1px, transparent 1px),
      linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size:56px 56px;
    opacity:0.35;
    mask-image:linear-gradient(to bottom, black, transparent 85%);
    pointer-events:none;
  }
  .hero-grid{
    position:relative;
    display:grid;
    grid-template-columns:1.05fr 0.95fr;
    gap:clamp(2rem, 5vw, 4rem);
    align-items:center;
  }
  .hero h1{
    font-size:clamp(2.4rem, 4.6vw, 3.6rem);
    line-height:1.06;
    color:var(--cuivre);
  }
  .hero h1 .accent{ color:inherit; font-style:italic; }
  .hero p.lede{
    margin-top:1.3rem;
    max-width:34ch;
    color:#454A3F;
    font-size:1.05rem;
  }
  .hero-actions{ margin-top:2rem; display:flex; gap:1rem; flex-wrap:wrap; }

  /* ---------- Before/After signature slider ---------- */
  .ba-card{
    background:var(--ardoise);
    border-radius:var(--radius);
    padding:1.1rem;
    box-shadow:0 30px 60px -30px rgba(32,36,30,0.5);
  }
  .ba-slider{
    position:relative;
    width:100%;
    aspect-ratio:4/3.1;
    overflow:hidden;
    border-radius:1px;
    background:var(--ardoise-soft);
  }
  .ba-slider svg{ position:absolute; inset:0; width:100%; height:100%; display:block; }
  .ba-before{
    position:absolute; inset:0; z-index:2;
    clip-path:inset(0 50% 0 0);
    will-change:clip-path;
  }
  .ba-after{ position:absolute; inset:0; z-index:1; }
  .ba-handle{
    position:absolute; top:0; bottom:0; left:50%;
    width:2px; background:var(--cuivre);
    transform:translateX(-1px);
    z-index:3; pointer-events:none;
    display:flex; align-items:center; justify-content:center;
  }
  .ba-handle::after{
    content:"⇔";
    background:var(--cuivre);
    color:var(--ardoise);
    width:2.1rem; height:2.1rem;
    border-radius:50%;
    display:flex; align-items:center; justify-content:center;
    font-size:0.9rem;
  }
  .ba-range{
    position:absolute; inset:0;
    width:100%; height:100%;
    margin:0;
    opacity:0;
    cursor:ew-resize;
    z-index:4;
    -webkit-appearance:none;
    appearance:none;
  }
  .ba-labels{
    display:flex; justify-content:space-between;
    margin-top:0.9rem;
    font-family:'JetBrains Mono', monospace;
    font-size:0.68rem;
    letter-spacing:0.08em;
    text-transform:uppercase;
    color:var(--cuivre-soft);
  }
  .ba-caption{
    margin-top:0.4rem;
    font-family:'JetBrains Mono', monospace;
    font-size:0.7rem;
    color:rgba(234,226,203,0.55);
    text-align:center;
  }

  /* ---------- Section shell ---------- */
  section{ padding:clamp(3.5rem, 7vw, 6rem) 0; }
  .section-head{
    max-width:52ch;
    margin-bottom:clamp(2.2rem, 5vw, 3.2rem);
  }
  .section-head h2{ font-size:clamp(1.8rem, 3vw, 2.4rem); margin-top:0.6rem; }
  .section-head p{ color:#454A3F; margin-top:0.9rem; }

  .dark{ background:var(--ardoise); color:var(--platre); }
  .dark h1,.dark h2,.dark h3{ color:var(--platre); }
  .dark p{ color:rgba(234,226,203,0.72); }

  /* ---------- Services ---------- */
  .services-grid{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:1px;
    background:var(--line);
    border:1px solid var(--line);
  }
  .service-card{
    background:var(--platre-soft);
    padding:2.2rem 1.8rem;
    display:flex; flex-direction:column; gap:1rem;
  }
  .service-card .icon{ width:2.6rem; height:2.6rem; color:var(--cuivre); }
  .service-card h3{ font-size:1.25rem; }
  .service-card p{ color:#454A3F; font-size:0.95rem; margin:0; }
  .service-card ul{ margin:0.4rem 0 0; padding-left:1.1rem; font-size:0.9rem; color:#454A3F; }
  .service-card li{ margin-bottom:0.3rem; }

  /* ---------- Process ---------- */
  .process-list{ display:flex; flex-direction:column; }
  .process-item{
    display:grid;
    grid-template-columns:5rem 1fr;
    gap:1.5rem;
    padding:1.6rem 0;
    border-top:1px solid var(--line-light);
  }
  .process-item:last-child{ border-bottom:1px solid var(--line-light); }
  .process-num{
    font-family:'JetBrains Mono', monospace;
    font-size:0.95rem;
    color:var(--cuivre);
  }
  .process-item h3{ color:var(--platre); font-size:1.15rem; margin-bottom:0.35rem; }
  .process-item p{ margin:0; max-width:50ch; }

  /* ---------- Réalisations ---------- */
  .work-grid{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:1.4rem;
  }
  .work-card{
    border:1px solid var(--line);
    background:var(--platre-soft);
    overflow:hidden;
  }
  .work-swatch{
    height:190px;
    position:relative;
  }
  .work-swatch.pierre{ background:
      repeating-linear-gradient(115deg, #d9cfb2 0 18px, #cdc09b 18px 20px),
      linear-gradient(160deg, var(--platre) 0%, #cdc09b 100%);
  }
  .work-swatch.bois{ background:
      repeating-linear-gradient(90deg, #8a5a34 0 6px, #7a4c29 6px 12px);
  }
  .work-swatch.cuivre{ background:
      linear-gradient(135deg, var(--cuivre-soft), var(--cuivre) 60%, #7d5228);
  }
  .work-swatch img{
    width:100%; height:100%;
    object-fit:cover;
    display:block;
  }
  .work-swatch.vide{
    background:
      repeating-linear-gradient(45deg, transparent 0 10px, rgba(32,36,30,0.05) 10px 11px),
      var(--platre);
    border:1px dashed var(--line);
    display:flex; align-items:center; justify-content:center;
  }
  .work-swatch.vide .placeholder-label{
    font-family:'JetBrains Mono', monospace;
    font-size:0.72rem;
    letter-spacing:0.06em;
    text-transform:uppercase;
    color:#8C6B45;
    text-align:center;
    padding:0 1rem;
  }
  .work-swatch .tag{
    position:absolute; bottom:0.8rem; left:0.8rem;
    font-family:'JetBrains Mono', monospace;
    font-size:0.66rem; letter-spacing:0.08em; text-transform:uppercase;
    background:rgba(32,36,30,0.72); color:var(--platre-soft);
    padding:0.35em 0.7em;
  }
  .work-body{ padding:1.3rem 1.4rem 1.5rem; }
  .work-body h3{ font-size:1.1rem; }
  .work-body p{ margin:0.4rem 0 0; font-size:0.9rem; color:#454A3F; }

  /* ---------- Témoignages ---------- */
  .quotes{
    display:grid;
    grid-template-columns:repeat(2, 1fr);
    gap:1.6rem;
  }
  .quote-card{
    border:1px solid var(--line);
    padding:1.8rem;
    background:var(--platre-soft);
    position:relative;
  }
  .quote-card::before{
    content:"";
    position:absolute; top:0; left:1.8rem;
    width:1px; height:14px; background:var(--cuivre);
  }
  .quote-card p.q{
    font-family:'Fraunces', serif;
    font-size:1.15rem;
    font-style:italic;
    color:var(--ardoise);
    margin:0;
    line-height:1.5;
  }
  .quote-card.vide{
    border-style:dashed;
    background:
      repeating-linear-gradient(45deg, transparent 0 10px, rgba(32,36,30,0.05) 10px 11px),
      var(--platre-soft);
  }
  .quote-card.vide p.q{
    font-family:'JetBrains Mono', monospace;
    font-style:normal;
    font-size:0.72rem;
    letter-spacing:0.06em;
    text-transform:uppercase;
    color:#8C6B45;
  }
  .quote-card .who{
    margin-top:1rem;
    font-family:'JetBrains Mono', monospace;
    font-size:0.72rem;
    letter-spacing:0.05em;
    text-transform:uppercase;
    color:var(--cuivre);
  }

  /* ---------- Contact ---------- */
  .contact-grid{
    display:grid;
    grid-template-columns:0.9fr 1.1fr;
    gap:clamp(2rem, 5vw, 4rem);
  }
  .contact-info p{ color:rgba(234,226,203,0.72); max-width:38ch; }
  .contact-list{ list-style:none; padding:0; margin:1.6rem 0 0; font-family:'JetBrains Mono', monospace; font-size:0.85rem; }
  .contact-list li{ padding:0.5rem 0; border-top:1px solid rgba(234,226,203,0.16); }
  .contact-list a{ text-decoration:none; }
  .contact-list a:hover{ color:var(--cuivre-soft); }

  form.devis{ display:grid; gap:1rem; }
  .field-row{ display:grid; grid-template-columns:1fr 1fr; gap:1rem; }
  label{
    display:block;
    font-family:'JetBrains Mono', monospace;
    font-size:0.7rem;
    letter-spacing:0.06em;
    text-transform:uppercase;
    color:var(--cuivre-soft);
    margin-bottom:0.4rem;
  }
  input, select, textarea{
    width:100%;
    background:var(--ardoise-soft);
    border:1px solid rgba(234,226,203,0.25);
    color:var(--platre);
    padding:0.75em 0.85em;
    font-family:'Work Sans', sans-serif;
    font-size:0.95rem;
    border-radius:var(--radius);
  }
  input::placeholder, textarea::placeholder{ color:rgba(234,226,203,0.4); }
  textarea{ resize:vertical; min-height:110px; }
  form.devis .btn{ justify-self:start; margin-top:0.4rem; }
  .form-note{
    font-family:'JetBrains Mono', monospace;
    font-size:0.68rem;
    color:rgba(234,226,203,0.45);
    margin-top:0.3rem;
  }

  /* ---------- Footer ---------- */
  footer{
    background:var(--ardoise);
    color:rgba(234,226,203,0.6);
    padding:2.4rem 0;
    border-top:1px solid rgba(234,226,203,0.14);
  }
  .footer-row{
    display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:1rem;
    font-size:0.82rem;
  }
  .footer-row nav ul{ list-style:none; display:flex; gap:1.5rem; margin:0; padding:0; }
  .footer-row nav a{ text-decoration:none; color:rgba(234,226,203,0.6); }
  .footer-row nav a:hover{ color:var(--cuivre-soft); }

  @media (max-width:1100px) and (min-width:901px){
    .work-grid{ grid-template-columns:repeat(2, 1fr); }
  }

  /* ---------- Responsive ---------- */
  @media (max-width:900px){
    .hero-grid{ grid-template-columns:1fr; }
    .services-grid{ grid-template-columns:1fr; }
    .work-grid{ grid-template-columns:1fr; }
    .quotes{ grid-template-columns:1fr; }
    .contact-grid{ grid-template-columns:1fr; }
    .field-row{ grid-template-columns:1fr; }
    nav.primary-nav{ display:none; }
  }