/* ═══════════════════════════════════════════════════════
   ARDOISE & ZINC — luxe minimaliste, monochrome métallique
   Beaucoup de blanc, typographie Cormorant, accents zinc
   ═══════════════════════════════════════════════════════ */

:root {
  --blanc: #FAFAF8;
  --blanc-2: #F2F2EF;
  --noir: #17181A;
  --gris: #5F6166;
  --gris-clair: #C9CBCD;
  --zinc: #9DA3A8;
  --metal: linear-gradient(115deg, #8E959B 0%, #C4CACF 38%, #7C8388 62%, #B4BABF 100%);
  --ligne: rgba(23, 24, 26, 0.12);
  --display: "Cormorant Garamond", Georgia, serif;
  --ui: "Outfit", system-ui, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--ui);
  font-weight: 300;
  background: var(--blanc);
  color: var(--noir);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

.conteneur { max-width: 1200px; margin: 0 auto; padding: 0 28px; }
.section { padding: clamp(5rem, 11vw, 10rem) 0; }

h1, h2, h3 { font-family: var(--display); font-weight: 400; line-height: 1.08; letter-spacing: 0.005em; }
h2 { font-size: clamp(2.3rem, 5vw, 3.8rem); margin-bottom: clamp(1.6rem, 3vw, 2.6rem); }
h2::after { content: ""; display: block; width: 56px; height: 1px; background: var(--zinc); margin-top: 1.4rem; }

.grand-texte { font-family: var(--display); font-size: clamp(1.25rem, 2vw, 1.55rem); line-height: 1.5; max-width: 30em; }
.numero {
  font-family: var(--display);
  font-size: 1.1rem;
  color: var(--zinc);
  letter-spacing: 0.35em;
  margin-bottom: 1.2rem;
}

/* ─────────── Boutons & liens ─────────── */
.btn-plein {
  display: inline-block;
  font-family: var(--ui);
  font-weight: 400;
  font-size: 0.92rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--blanc);
  background: var(--noir);
  padding: 1.05em 2.3em;
  border: 1px solid var(--noir);
  cursor: pointer;
  transition: background-color 0.3s ease, color 0.3s ease, letter-spacing 0.3s ease;
}
.btn-plein:hover, .btn-plein:focus-visible { background: transparent; color: var(--noir); letter-spacing: 0.2em; }
.btn-plein:focus-visible { outline: 2px solid var(--zinc); outline-offset: 3px; }
.btn-large { width: 100%; text-align: center; }

.lien-souligne {
  font-size: 0.92rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--noir);
  padding-bottom: 0.35em;
  background: linear-gradient(var(--noir), var(--noir)) left bottom / 100% 1px no-repeat;
  transition: background-size 0.35s ease;
}
.lien-souligne:hover, .lien-souligne:focus-visible { background-size: 30% 1px; }

/* ─────────── Entête ─────────── */
.entete {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 250, 248, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--ligne);
}
.entete-inner {
  max-width: 1320px; margin: 0 auto;
  padding: 1.05rem 28px;
  display: flex; align-items: center; gap: 2rem;
}
.marque {
  font-family: var(--display);
  font-size: 1.45rem;
  color: var(--noir);
  text-decoration: none;
  margin-right: auto;
  white-space: nowrap;
}
.marque span { color: var(--zinc); font-size: 0.8em; }
.nav { display: flex; gap: 2rem; }
.nav a {
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--gris);
  text-decoration: none;
  padding-bottom: 0.3em;
  background: linear-gradient(var(--noir), var(--noir)) left bottom / 0% 1px no-repeat;
  transition: color 0.25s ease, background-size 0.3s ease;
}
.nav a:hover, .nav a:focus-visible { color: var(--noir); background-size: 100% 1px; }
.entete-tel {
  font-family: var(--display);
  font-size: 1.12rem;
  color: var(--noir);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease;
}
.entete-tel:hover, .entete-tel:focus-visible { border-bottom-color: var(--noir); }

.menu-bouton { display: none; background: none; border: none; width: 44px; height: 44px; cursor: pointer; flex-direction: column; justify-content: center; align-items: center; gap: 7px; }
.menu-bouton span { width: 26px; height: 1px; background: var(--noir); display: block; transition: transform 0.3s ease; }
.menu-bouton[aria-expanded="true"] span:nth-child(1) { transform: translateY(4px) rotate(45deg); }
.menu-bouton[aria-expanded="true"] span:nth-child(2) { transform: translateY(-4px) rotate(-45deg); }

/* ─────────── Héro ─────────── */
.hero {
  display: grid;
  grid-template-columns: 45% 55%;
  min-height: min(88vh, 900px);
  align-items: stretch;
}
.hero-texte {
  padding: clamp(3rem, 7vw, 6rem) clamp(1.8rem, 4vw, 4.5rem) clamp(3rem, 6vw, 5rem);
  display: flex; flex-direction: column; justify-content: center;
}
.sur-titre {
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gris);
  margin-bottom: 2rem;
}
.hero h1 {
  font-size: clamp(2.9rem, 5.6vw, 5rem);
  margin-bottom: 1.8rem;
}
.hero h1 em {
  font-style: italic;
  background: var(--metal);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-phrase { color: var(--gris); max-width: 44ch; margin-bottom: 2.6rem; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 2rem; margin-bottom: 3rem; }
.hero-mentions {
  list-style: none;
  display: flex; flex-wrap: wrap;
  gap: 0.5rem 2rem;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gris);
  border-top: 1px solid var(--ligne);
  padding-top: 1.6rem;
}
.hero-image { position: relative; overflow: hidden; }
.hero-image img, .hero-video {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
}
.hero-video { opacity: 0; transition: opacity 1.4s ease; }
.hero-video.visible { opacity: 1; }

/* ─────────── La maison ─────────── */
.maison { background: var(--blanc); }
.maison-grille {
  display: grid;
  grid-template-columns: 1fr 1.4fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}
.maison .numero { grid-column: 1; }
.maison-corps p + p { margin-top: 1.4rem; color: var(--gris); }
.maison-corps .grand-texte { color: var(--noir); }
.chiffres {
  display: flex; gap: clamp(1.5rem, 4vw, 3.5rem);
  margin-top: 3rem;
  border-top: 1px solid var(--ligne);
  padding-top: 2rem;
}
.chiffres dt {
  font-family: var(--display);
  font-size: clamp(2rem, 3.4vw, 2.9rem);
  background: linear-gradient(115deg, #4A5055 0%, #8B9298 45%, #3E4449 70%, #6E757B 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.1;
}
.chiffres dd { font-size: 0.82rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--gris); }
.maison-photo img { filter: grayscale(0.25); }
.maison-photo figcaption {
  margin-top: 1rem;
  font-family: var(--display);
  font-style: italic;
  font-size: 1.02rem;
  color: var(--gris);
}

/* ─────────── Expertises ─────────── */
.expertises { background: var(--noir); color: var(--blanc); }
.expertises h2 { color: var(--blanc); }
.expertises h2::after { background: var(--zinc); }
.expertises .numero { color: var(--zinc); }
.expertises-liste { list-style: none; margin-top: 3rem; border-top: 1px solid rgba(250, 250, 248, 0.14); }
.expertises-liste li {
  display: grid;
  grid-template-columns: 110px 1fr auto;
  align-items: center;
  gap: 2rem;
  padding: 2.1rem 0.5rem;
  border-bottom: 1px solid rgba(250, 250, 248, 0.14);
  transition: background-color 0.3s ease, padding-left 0.3s ease;
}
.exp-lien {
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--zinc);
  text-decoration: none;
  white-space: nowrap;
  padding: 0.4em 0.2em;
  border-bottom: 1px solid transparent;
  transition: color 0.25s ease, border-color 0.25s ease;
}
.exp-lien:hover, .exp-lien:focus-visible { color: var(--blanc); border-bottom-color: var(--blanc); }
.expertises-liste li:hover { background: rgba(250, 250, 248, 0.045); padding-left: 1.4rem; }
.exp-index {
  font-family: var(--display);
  font-size: 1.5rem;
  background: var(--metal);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.expertises-liste h3 { font-size: clamp(1.4rem, 2.2vw, 1.85rem); margin-bottom: 0.5rem; }
.expertises-liste p { color: rgba(250, 250, 248, 0.62); font-size: 0.97rem; max-width: 66ch; font-weight: 300; }

/* ─────────── Ouvrages ─────────── */
.ouvrages-flux { display: flex; flex-direction: column; gap: clamp(3.5rem, 7vw, 6.5rem); margin-top: 3.5rem; }
.ouvrage { max-width: 70%; }
.ouvrage.decale { align-self: flex-end; max-width: 55%; }
.ouvrage-cadre { overflow: hidden; }
.ouvrage-cadre img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}
.ouvrage:hover .ouvrage-cadre img { transform: scale(1.035); }
.ouvrage figcaption {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.4rem 1.4rem;
  align-items: baseline;
  margin-top: 1.1rem;
  border-top: 1px solid var(--ligne);
  padding-top: 1rem;
}
.ouvrage-num { font-family: var(--display); font-style: italic; color: var(--zinc); font-size: 1rem; }
.ouvrage figcaption strong { font-family: var(--display); font-weight: 500; font-size: 1.15rem; }
.ouvrage figcaption > span:last-child { font-size: 0.8rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--gris); }

/* ─────────── Paroles ─────────── */
.paroles { background: var(--blanc-2); }
.paroles-note { font-size: 0.85rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--gris); margin-bottom: 3rem; }
.paroles-note span { color: var(--noir); letter-spacing: 0.3em; }
.paroles-grille { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1.5rem, 4vw, 3rem); }
.paroles-grille blockquote { border-top: 1px solid var(--noir); padding-top: 1.6rem; }
.paroles-grille p {
  font-family: var(--display);
  font-size: clamp(1.15rem, 1.8vw, 1.4rem);
  line-height: 1.5;
  margin-bottom: 1.4rem;
}
.paroles-grille footer { font-size: 0.8rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--gris); }

/* ─────────── Territoire ─────────── */
.territoire-grille { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2.5rem, 6vw, 5rem); align-items: start; }
.territoire-liste {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--ligne);
}
.territoire-liste li {
  font-family: var(--display);
  font-size: 1.25rem;
  padding: 0.9rem 0.2rem;
  border-bottom: 1px solid var(--ligne);
  transition: padding-left 0.3s ease, color 0.3s ease;
}
.territoire-liste li:hover { padding-left: 0.9rem; color: var(--gris); }

/* ─────────── Engagements ─────────── */
.engagements { background: var(--noir); color: var(--blanc); padding: clamp(3.5rem, 7vw, 5rem) 0; }
.engagements-liste { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 2.5rem; }
.engagements-liste li { border-top: 1px solid var(--zinc); padding-top: 1.2rem; }
.engagements-liste strong { font-family: var(--display); font-weight: 500; font-size: 1.2rem; display: block; margin-bottom: 0.4rem; }
.engagements-liste span { font-size: 0.85rem; color: rgba(250, 250, 248, 0.6); font-weight: 300; }

/* ─────────── Contact ─────────── */
.contact-grille { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2.5rem, 7vw, 6rem); align-items: start; }
address { font-style: normal; margin: 2.4rem 0 1.6rem; display: grid; gap: 0.9rem; font-size: 1.02rem; }
address a { color: var(--noir); text-decoration: none; border-bottom: 1px solid var(--gris-clair); transition: border-color 0.25s ease; }
address a:hover, address a:focus-visible { border-bottom-color: var(--noir); }
.contact-horaires { font-size: 0.92rem; color: var(--gris); }

.formulaire { display: grid; gap: 1.5rem; border: 1px solid var(--ligne); padding: clamp(1.8rem, 4vw, 3rem); background: #FFFFFF; }
.champ { display: grid; gap: 0.5rem; }
.champ label { font-size: 0.78rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--gris); }
.champ input, .champ select, .champ textarea {
  font-family: var(--ui);
  font-weight: 300;
  font-size: 1.02rem;
  color: var(--noir);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--gris-clair);
  padding: 0.55em 0.1em;
  width: 100%;
  border-radius: 0;
  transition: border-color 0.25s ease;
}
.champ select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236E7075' stroke-width='1.4' fill='none'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.2em center; }
.champ input:focus, .champ select:focus, .champ textarea:focus { outline: none; border-bottom-color: var(--noir); }
.champ .erreur { display: none; font-size: 0.8rem; color: #9B3324; }
.champ.invalide input, .champ.invalide select { border-bottom-color: #9B3324; }
.champ.invalide .erreur { display: block; }
.form-note { font-size: 0.82rem; color: var(--gris); text-align: center; }
.form-succes { border: 1px solid var(--zinc); padding: 1rem 1.2rem; font-size: 0.95rem; color: var(--noir); background: var(--blanc-2); }

/* ─────────── Pied ─────────── */
.pied { border-top: 1px solid var(--ligne); padding: 3.5rem 0 5rem; }
.pied-grille { display: grid; grid-template-columns: auto 1fr auto; gap: 2.5rem; align-items: start; }
.pied-marque { font-family: var(--display); font-size: 1.6rem; }
.pied-marque span { color: var(--zinc); font-size: 0.8em; }
.pied-infos { font-size: 0.9rem; color: var(--gris); display: grid; gap: 1rem; }
.pied-infos a { color: var(--noir); text-decoration: none; border-bottom: 1px solid var(--gris-clair); }
.pied-infos a:hover, .pied-infos a:focus-visible { border-bottom-color: var(--noir); }
.pied-haut { font-size: 0.8rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--gris); text-decoration: none; transition: color 0.25s ease; }
.pied-haut:hover, .pied-haut:focus-visible { color: var(--noir); }
.pied-mention { text-align: center; margin-top: 3rem; font-size: 0.8rem; color: var(--gris); padding: 0 28px; }
.pied-mention a { color: var(--noir); text-decoration: underline; }

/* ─────────── Barre mobile ─────────── */
.barre-mobile {
  position: fixed; inset: auto 0 0 0; z-index: 60;
  display: none; grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--ligne);
}
.barre-mobile a {
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem; letter-spacing: 0.12em; text-transform: uppercase;
  text-decoration: none;
  padding: 1.05rem 0.5rem calc(1.05rem + env(safe-area-inset-bottom));
}
.barre-tel { background: var(--blanc); color: var(--noir); }
.barre-devis { background: var(--noir); color: var(--blanc); }

/* ─────────── Révélations ─────────── */
.revele { opacity: 0; transform: translateY(30px); transition: opacity 0.9s ease, transform 0.9s ease; }
.revele.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .revele { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ═══════════ Responsive ═══════════ */
@media (max-width: 1024px) {
  .maison-grille { grid-template-columns: 1fr; }
  .maison .numero { grid-column: auto; }
  .maison-photo { max-width: 460px; }
  .engagements-liste { grid-template-columns: repeat(2, 1fr); }
  .ouvrage, .ouvrage.decale { max-width: 100%; align-self: stretch; }
}

@media (max-width: 900px) {
  .nav {
    display: none;
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--blanc);
    border-bottom: 1px solid var(--ligne);
    flex-direction: column; gap: 0;
    padding: 0.8rem 0;
  }
  .nav.ouverte { display: flex; }
  .nav a { padding: 0.95rem 28px; background: none; }
  .menu-bouton { display: flex; }
  .entete-tel { display: none; }

  .hero { grid-template-columns: 1fr; min-height: 0; }
  .hero-image { order: -1; height: 52vh; position: relative; }
  .territoire-grille, .contact-grille { grid-template-columns: 1fr; }
  .paroles-grille { grid-template-columns: 1fr; max-width: 620px; }
  .pied-grille { grid-template-columns: 1fr; gap: 1.6rem; }

  .barre-mobile { display: grid; }
  body { padding-bottom: 58px; }
  .pied { padding-bottom: 7rem; }
}

@media (max-width: 560px) {
  .hero-actions { gap: 1.4rem; }
  .hero-actions .btn-plein { width: 100%; text-align: center; }
  .expertises-liste li { grid-template-columns: 1fr; gap: 0.5rem; padding: 1.7rem 0.3rem; }
  .exp-lien { justify-self: start; }
  .engagements-liste { grid-template-columns: 1fr; }
  .territoire-liste { grid-template-columns: 1fr; }
  .chiffres { flex-wrap: wrap; }
  .ouvrage figcaption { grid-template-columns: 1fr; gap: 0.2rem; }
}