/* Atelier Fixture — feuille de style du site.
   Fixture de contrôle du § 4 (formulaire de démo désactivé).
   Le CSS du formulaire vit ICI, jamais dans un bloc <style> de la page. */

:root {
  --papier:      #EDEEEA;
  --papier-creux:#E3E5DF;
  --encre:       #1B2320;
  --encre-doux:  #4A554E;
  --mousse:      #5A6B3F;
  --mousse-clair:#7A8C5B;
  --bois:        #B9A183;
  --ligne:       rgba(27, 35, 32, .16);
  --gris-inerte: #8A928C;

  --f-titre: "Bricolage Grotesque", "Helvetica Neue", Arial, sans-serif;
  --f-corps: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  --t-vite: 140ms cubic-bezier(.2, .7, .3, 1);
  --large: 1080px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: var(--f-corps);
  font-weight: 300;
  font-size: 17px;
  line-height: 1.7;
  color: var(--encre);
  background: var(--papier);
  font-variant-numeric: lining-nums;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .marque { font-family: var(--f-titre); font-weight: 700; line-height: 1.12; }
h1 { font-size: clamp(2.1rem, 5.5vw, 3.4rem); letter-spacing: -0.03em; }
h2 { font-size: clamp(1.35rem, 3vw, 1.85rem); letter-spacing: -0.02em; margin-bottom: .7rem; }
h3 { font-size: 1.08rem; font-weight: 500; margin-bottom: .35rem; }
p + p { margin-top: .8rem; }

.wrap { max-width: var(--large); margin: 0 auto; padding: 0 22px; }
.saut { position: absolute; left: -9999px; }
.saut:focus-visible { left: 12px; top: 12px; background: var(--encre); color: var(--papier); padding: 10px 14px; z-index: 10; }

a { color: var(--mousse); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--encre); }
a:focus-visible { outline: 2px solid var(--mousse); outline-offset: 3px; }

/* --- en-tête ------------------------------------------------------------ */
.entete { border-bottom: 1px solid var(--ligne); background: var(--papier); }
.entete-in { display: flex; flex-wrap: wrap; gap: 14px 26px; align-items: center; padding-top: 16px; padding-bottom: 16px; }
.marque { font-size: 1.12rem; letter-spacing: -0.02em; color: var(--encre); text-decoration: none; }
.nav { display: flex; flex-wrap: wrap; gap: 18px; list-style: none; }
.nav a { color: var(--encre-doux); text-decoration: none; font-size: .94rem; }
.nav a:hover { color: var(--mousse); }
.tel-entete { margin-left: auto; font-weight: 500; text-decoration: none; }

/* --- sections ----------------------------------------------------------- */
.hero { padding: 84px 0 72px; border-bottom: 1px solid var(--ligne); }
.page-tete { padding: 60px 0 34px; }
.page-tete--seule { padding-bottom: 72px; }
.chapo { max-width: 62ch; margin-top: 1rem; color: var(--encre-doux); font-size: 1.06rem; }
.bande { padding: 44px 0 72px; }
.ecart { margin-top: 2.2rem; }
.grille-3 { display: grid; gap: 26px; margin-top: 1.6rem; }
.contact-grille { display: grid; gap: 44px; }

/* --- boutons ------------------------------------------------------------ */
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 1.6rem; }
.btn {
  display: inline-block; padding: 13px 22px; border-radius: 2px;
  font-family: var(--f-corps); font-size: .97rem; font-weight: 500;
  text-decoration: none; border: 1px solid transparent;
  transition: background-color var(--t-vite), color var(--t-vite), border-color var(--t-vite), transform var(--t-vite);
}
.btn-plein { background: var(--mousse); color: var(--papier); }
.btn-plein:hover { background: var(--encre); color: var(--papier); }
.btn-ligne { border-color: var(--ligne); color: var(--encre); }
.btn-ligne:hover { border-color: var(--encre); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: 2px solid var(--mousse); outline-offset: 3px; }

/* --- formulaire de devis ------------------------------------------------
   En DÉMO le bloc est un <div> sans <form>, et son <fieldset> est disabled.
   Le rendu ci-dessous doit DIRE qu'il est hors service, sans avoir l'air cassé. */
.form-devis { margin-top: 2.6rem; padding-top: 2.2rem; border-top: 1px solid var(--ligne); max-width: 34rem; }
.form-devis fieldset { border: 0; }
.champ { margin-bottom: 16px; }
.champ label {
  display: block; font-size: .9rem; font-weight: 500;
  color: var(--encre-doux); margin-bottom: 6px;
}
.champ .facultatif { font-weight: 300; color: var(--gris-inerte); }
.champ input, .champ select, .champ textarea {
  width: 100%; padding: 11px 13px;
  font-family: var(--f-corps); font-size: 16px; font-weight: 300; line-height: 1.5;
  color: var(--encre); background: #FFFFFF;
  border: 1px solid var(--ligne); border-radius: 2px;
  transition: border-color var(--t-vite);
}
.champ textarea { min-height: 118px; resize: vertical; }
.champ select { appearance: none; -webkit-appearance: none; padding-right: 38px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath fill='none' stroke='%234A554E' stroke-width='1.5' stroke-linecap='round' d='M1 1.5 6 6.5 11 1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 13px center; background-size: 12px; }
.champ input:hover, .champ select:hover, .champ textarea:hover { border-color: var(--encre-doux); }
.champ input:focus-visible, .champ select:focus-visible, .champ textarea:focus-visible {
  border-color: var(--mousse); outline: 2px solid var(--mousse); outline-offset: 2px; }

/* état désactivé : lisible, visiblement hors service, jamais « cassé » */
.form-devis fieldset:disabled .champ input,
.form-devis fieldset:disabled .champ select,
.form-devis fieldset:disabled .champ textarea {
  background: var(--papier-creux); color: var(--gris-inerte); cursor: not-allowed;
}
.form-devis fieldset:disabled .champ label { color: var(--gris-inerte); }
.form-devis fieldset:disabled .btn {
  background: var(--papier-creux); color: var(--gris-inerte);
  border-color: var(--ligne); cursor: not-allowed; width: 100%;
}
.form-devis fieldset:disabled .btn:hover { background: var(--papier-creux); color: var(--gris-inerte); }
.form-devis fieldset:disabled .btn:active { transform: none; }

/* --- pied --------------------------------------------------------------- */
.pied { margin-top: 46px; border-top: 1px solid var(--ligne); background: var(--papier-creux); padding: 44px 0 26px; }
.pied-in { display: grid; gap: 30px; }
.marque--pied { font-size: 1.06rem; }
.pied-note, .pied a { color: var(--encre-doux); }
.pied-titre { font-family: var(--f-corps); font-size: .82rem; font-weight: 500; color: var(--gris-inerte); margin-bottom: .5rem; }
.pied-liens { list-style: none; }
.pied-liens a { text-decoration: none; }
.pied-bas { display: flex; flex-wrap: wrap; gap: 10px 22px; justify-content: space-between;
  border-top: 1px solid var(--ligne); margin-top: 30px; padding-top: 18px; font-size: .88rem; color: var(--encre-doux); }

@media (min-width: 760px) {
  .grille-3 { grid-template-columns: repeat(3, 1fr); gap: 34px; }
  .contact-grille { grid-template-columns: 1.25fr 1fr; gap: 60px; }
  .pied-in { grid-template-columns: 1.4fr 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: 1ms !important; }
}