:root {
  --fond: #faf8f4; --papier: #ffffff; --encre: #18222c; --texte: #3d4852; --doux: #6b7580;
  --ligne: #e7e2da; --accent: #1f5f5b; --accent-fonce: #164744; --or: #c29a55; --brume: #f2eee7;
  --titre: "Fraunces", Georgia, serif; --corps: "Inter", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--fond); color: var(--texte); font: 16px/1.6 var(--corps); -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
h1, h2, h3 { font-family: var(--titre); color: var(--encre); font-weight: 500; letter-spacing: -0.01em; margin: 0; line-height: 1.12; }
h2 { font-size: clamp(30px, 3.6vw, 44px); }
p { margin: 0; }
a { color: inherit; }
.cadre { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 28px; }
.section { padding: clamp(64px, 8vw, 110px) 0; }
.sur { font-size: 12.5px; letter-spacing: 0.16em; text-transform: uppercase; color: #e9d6ad; margin-bottom: 16px; font-weight: 500; }
.sur-sombre { color: var(--or); }
.bouton { display: inline-flex; align-items: center; justify-content: center; gap: 8px; background: var(--accent); color: #fff; border: 0; border-radius: 999px; padding: 14px 26px; font: 600 15px var(--corps); text-decoration: none; cursor: pointer; transition: background .2s, transform .2s; }
.bouton:hover { background: var(--accent-fonce); transform: translateY(-1px); }
.bouton-petit { padding: 10px 18px; font-size: 14px; }

/* En-tête */
.tete { position: sticky; top: 0; z-index: 20; background: rgba(250, 248, 244, 0.92); backdrop-filter: blur(12px); border-bottom: 1px solid var(--ligne); }
.tete-ligne { display: flex; align-items: center; gap: 32px; height: 76px; }
.marque { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; color: var(--encre); font-family: var(--titre); font-size: 22px; font-weight: 600; }
.marque em { font-style: normal; font-family: var(--corps); font-size: 11px; font-weight: 500; letter-spacing: 0.2em; text-transform: uppercase; color: var(--doux); display: block; margin-top: 2px; }
.marque > span:last-child { display: flex; flex-direction: column; line-height: 1; }
.marque-signe { width: 40px; height: 40px; border-radius: 50%; background: var(--accent); color: #fff; display: inline-flex; align-items: center; justify-content: center; font-size: 20px; }
.marque-claire { color: #fff; } .marque-claire em { color: #a9b8c2; }
.nav { display: flex; gap: 30px; margin-left: auto; }
.nav a { text-decoration: none; font-weight: 500; font-size: 15px; color: var(--encre); }
.nav a:hover { color: var(--accent); }
.burger { display: none; margin-left: auto; background: none; border: 0; padding: 8px; cursor: pointer; flex-direction: column; gap: 5px; }
.burger i { display: block; width: 22px; height: 2px; background: var(--encre); }

/* Accueil */
.hero { position: relative; min-height: 660px; display: flex; align-items: flex-end; overflow: hidden; }
.hero-photo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-voile { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(14, 22, 30, 0.15) 0%, rgba(14, 22, 30, 0.55) 55%, rgba(14, 22, 30, 0.82) 100%); }
.hero-contenu { position: relative; padding-top: 140px; padding-bottom: 56px; }
.hero h1 { color: #fff; font-size: clamp(42px, 6vw, 78px); max-width: 820px; }
.hero-texte { color: #e4e8ec; font-size: 19px; margin-top: 18px; max-width: 560px; }
.recherche { margin-top: 38px; background: var(--papier); border-radius: 18px; padding: 14px; display: grid; grid-template-columns: repeat(3, 1fr) auto; gap: 10px; box-shadow: 0 30px 60px -30px rgba(0,0,0,.5); max-width: 980px; }
.recherche label { display: flex; flex-direction: column; gap: 2px; padding: 8px 14px; border-right: 1px solid var(--ligne); font-size: 12px; font-weight: 600; letter-spacing: 0.04em; color: var(--doux); text-transform: uppercase; }
.recherche label:nth-child(3) { border-right: 0; }
.recherche select { border: 0; background: none; font: 500 16px var(--corps); color: var(--encre); padding: 4px 0; text-transform: none; letter-spacing: 0; cursor: pointer; }
.recherche select:focus { outline: none; }
.recherche .bouton { padding: 0 34px; }

.chiffres { background: var(--encre); color: #cdd6dd; }
.chiffres-grille { display: grid; grid-template-columns: repeat(4, 1fr); }
.chiffres-grille div { padding: 34px 20px; border-left: 1px solid #2c3845; }
.chiffres-grille div:first-child { border-left: 0; padding-left: 0; }
.chiffres strong { display: block; font-family: var(--titre); font-size: 36px; font-weight: 500; color: #fff; }
.chiffres span { font-size: 14px; }

/* Biens */
.entete { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; flex-wrap: wrap; margin-bottom: 14px; }
.filtres { display: flex; gap: 8px; flex-wrap: wrap; }
.filtres button { font: 500 14px var(--corps); padding: 9px 16px; border-radius: 999px; border: 1px solid var(--ligne); background: var(--papier); color: var(--encre); cursor: pointer; }
.filtres button.actif { background: var(--encre); border-color: var(--encre); color: #fff; }
.resultat { color: var(--doux); font-size: 14.5px; margin-bottom: 26px; min-height: 22px; }
.biens { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.bien { background: var(--papier); border-radius: 16px; overflow: hidden; border: 1px solid var(--ligne); transition: transform .25s, box-shadow .25s; animation: entree .4s ease both; }
.bien:hover { transform: translateY(-4px); box-shadow: 0 26px 50px -30px rgba(24, 34, 44, 0.45); }
.bien-photo { position: relative; aspect-ratio: 4 / 3; overflow: hidden; }
.bien-photo img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.bien:hover .bien-photo img { transform: scale(1.05); }
.pastille { position: absolute; top: 14px; left: 14px; background: rgba(255,255,255,.94); color: var(--encre); font-size: 12.5px; font-weight: 600; padding: 6px 11px; border-radius: 999px; display: inline-flex; align-items: center; gap: 6px; }
.pastille::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.coeur { position: absolute; top: 10px; right: 10px; width: 40px; height: 40px; border-radius: 50%; border: 0; background: rgba(255,255,255,.94); cursor: pointer; display: flex; align-items: center; justify-content: center; }
.coeur svg { width: 20px; height: 20px; fill: none; stroke: var(--encre); stroke-width: 1.8; transition: fill .2s, stroke .2s; }
.coeur.actif svg { fill: #d1495b; stroke: #d1495b; }
.bien-corps { padding: 20px 22px 22px; }
.bien-prix { font-family: var(--titre); font-size: 26px; color: var(--encre); }
.bien h3 { font-family: var(--corps); font-size: 16px; font-weight: 600; margin-top: 4px; }
.bien-lieu { color: var(--doux); font-size: 14.5px; margin-top: 2px; }
.bien-infos { display: flex; gap: 16px; margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--ligne); font-size: 14px; color: var(--texte); }
.bien-infos span { display: inline-flex; gap: 6px; align-items: center; }
.bien-infos b { font-weight: 600; color: var(--encre); }
.bien-lien { display: inline-flex; gap: 6px; margin-top: 16px; font-weight: 600; font-size: 14.5px; color: var(--accent); text-decoration: none; }
.bien-lien:hover { text-decoration: underline; }
.vide { grid-column: 1 / -1; text-align: center; padding: 40px; background: var(--papier); border-radius: 16px; border: 1px dashed var(--ligne); color: var(--doux); }

/* Visite 3D */
.visite { background: var(--brume); }
.visite-grille { display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(32px, 6vw, 80px); align-items: center; }
.visite-image { position: relative; border-radius: 20px; overflow: hidden; aspect-ratio: 16 / 11; }
.visite-image img { width: 100%; height: 100%; object-fit: cover; }
.visite-pastille { position: absolute; top: 18px; left: 18px; color: #fff; font-weight: 600; font-size: 14px; padding: 9px 16px; border-radius: 10px; background: rgba(20, 20, 20, .45); backdrop-filter: blur(14px); }
.visite p:not(.sur) { margin: 18px 0 30px; font-size: 17px; }

/* Estimation */
.estimer { background: var(--accent); color: #dcebea; }
.estimer h2 { color: #fff; }
.estimer .sur { color: #e9d6ad; }
.estimer-grille { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 80px); align-items: center; }
.estimer-grille > div p:not(.sur) { margin-top: 18px; font-size: 17px; }
.carte-form { background: var(--papier); border-radius: 20px; padding: 28px; display: grid; gap: 16px; color: var(--texte); box-shadow: 0 30px 60px -34px rgba(0,0,0,.45); }
.carte-form label { display: grid; gap: 6px; font-size: 13.5px; font-weight: 600; color: var(--encre); }
.carte-form input, .carte-form select, .carte-form textarea { font: 16px var(--corps); padding: 12px 14px; border: 1px solid var(--ligne); border-radius: 10px; background: var(--fond); color: var(--encre); width: 100%; }
.carte-form input:focus, .carte-form select:focus, .carte-form textarea:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: var(--accent); }
.carte-form .bouton { justify-self: start; }
.deux { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.estimation-resultat { background: var(--brume); border-radius: 14px; padding: 18px; animation: entree .35s ease both; }
.estimation-resultat strong { display: block; font-family: var(--titre); font-size: 28px; color: var(--encre); font-weight: 500; margin: 4px 0; }
.estimation-resultat span { font-size: 13.5px; color: var(--doux); }
.ok { color: #1c7c4a; background: #e5f4ec; padding: 12px 14px; border-radius: 10px; font-weight: 600; font-size: 14.5px; animation: entree .35s ease both; }

/* Avis */
.avis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }
.avis figure { margin: 0; background: var(--papier); border: 1px solid var(--ligne); border-radius: 18px; padding: 28px; display: flex; flex-direction: column; justify-content: space-between; gap: 20px; }
.avis figure::before { content: "★★★★★"; color: var(--or); letter-spacing: 3px; font-size: 15px; }
.avis blockquote { margin: 0; font-family: var(--titre); font-size: 19px; line-height: 1.45; color: var(--encre); flex: 1; }
.avis figcaption { font-size: 14px; color: var(--doux); font-weight: 500; }

/* Contact */
.contact { background: var(--brume); }
.contact-grille { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(32px, 6vw, 80px); align-items: start; }
.coordonnees { list-style: none; padding: 0; margin: 30px 0 0; }
.coordonnees li { padding: 16px 0; border-bottom: 1px solid var(--ligne); color: var(--encre); font-size: 16.5px; }
.coordonnees span { display: block; font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--doux); margin-bottom: 4px; }

.pied { background: var(--encre); color: #a9b8c2; font-size: 13.5px; }
.pied-ligne { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; padding-top: 34px; padding-bottom: 34px; }

/* Assistant */
.assistant { position: fixed; right: 22px; bottom: 22px; z-index: 30; display: flex; flex-direction: column; align-items: flex-end; gap: 12px; }
.assistant-bulle { width: 60px; height: 60px; border-radius: 50%; border: 0; background: var(--accent); color: #fff; cursor: pointer; display: flex; align-items: center; justify-content: center; box-shadow: 0 14px 30px -10px rgba(0,0,0,.45); transition: transform .2s; }
.assistant-bulle:hover { transform: scale(1.06); }
.assistant-panneau { width: min(340px, calc(100vw - 44px)); background: var(--papier); border-radius: 18px; overflow: hidden; box-shadow: 0 30px 60px -20px rgba(0,0,0,.35); animation: entree .3s ease both; }
.assistant-tete { display: flex; justify-content: space-between; align-items: center; padding: 14px 16px; background: var(--encre); color: #fff; font-weight: 600; font-size: 15px; }
.assistant-tete i { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: #4ade80; margin-right: 8px; }
.assistant-tete button { background: none; border: 0; color: #fff; font-size: 22px; cursor: pointer; line-height: 1; }
.assistant-fil { padding: 16px; display: flex; flex-direction: column; gap: 10px; max-height: 320px; overflow-y: auto; }
.msg { font-size: 14.5px; line-height: 1.45; padding: 10px 14px; border-radius: 14px; max-width: 86%; animation: entree .3s ease both; }
.msg.ia { background: var(--brume); color: var(--encre); align-self: flex-start; border-bottom-left-radius: 4px; }
.msg.moi { background: var(--accent); color: #fff; align-self: flex-end; border-bottom-right-radius: 4px; }
.msg.points { display: flex; gap: 4px; } .msg.points i { width: 6px; height: 6px; border-radius: 50%; background: #9aa3ab; animation: point 1s infinite; } .msg.points i:nth-child(2) { animation-delay: .15s; } .msg.points i:nth-child(3) { animation-delay: .3s; }
.assistant-choix { display: flex; flex-wrap: wrap; gap: 8px; padding: 0 16px 16px; }
.assistant-choix button { font: 500 13.5px var(--corps); padding: 8px 12px; border-radius: 999px; border: 1px solid var(--accent); background: none; color: var(--accent); cursor: pointer; }
.assistant-choix button:hover { background: var(--accent); color: #fff; }

@keyframes entree { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
@keyframes point { 0%, 100% { opacity: .3; } 50% { opacity: 1; } }

@media (max-width: 980px) {
  .biens { grid-template-columns: 1fr 1fr; }
  .recherche { grid-template-columns: 1fr 1fr; }
  .recherche label:nth-child(2) { border-right: 0; }
  .recherche .bouton { padding: 14px; }
  .avis { grid-template-columns: 1fr; }
  .visite-grille, .estimer-grille, .contact-grille { grid-template-columns: 1fr; }
  .chiffres-grille { grid-template-columns: 1fr 1fr; }
  .chiffres-grille div:nth-child(3) { border-left: 0; padding-left: 0; }
}
@media (max-width: 720px) {
  .cadre { padding: 0 18px; }
  .tete-ligne { height: 66px; }
  .tete-cta { display: none; }
  .burger { display: flex; }
  .nav { display: none; position: absolute; top: 66px; left: 0; right: 0; flex-direction: column; gap: 0; background: var(--fond); border-bottom: 1px solid var(--ligne); padding: 8px 18px 16px; }
  .nav.ouverte { display: flex; }
  .nav a { padding: 12px 0; border-bottom: 1px solid var(--ligne); }
  .hero { min-height: 600px; }
  .hero-contenu { padding-top: 90px; padding-bottom: 32px; }
  .hero-texte { font-size: 16.5px; }
  .recherche { grid-template-columns: 1fr; border-radius: 16px; }
  .recherche label { border-right: 0; border-bottom: 1px solid var(--ligne); padding: 8px 10px; }
  .biens { grid-template-columns: 1fr; }
  .chiffres strong { font-size: 30px; }
  .chiffres-grille div { padding: 24px 12px; }
  .deux { grid-template-columns: 1fr; }
  .pied-ligne { flex-direction: column; align-items: flex-start; }
}