:root {
    --noir: #0a0a08;
    --noir-mid: #141410;
    --noir-soft: #1e1e18;
    --or: #c9a84c;
    --or-light: #e8c97a;
    --or-pale: #f5e8c0;
    --blanc: #f8f4ec;
    --gris: #8a8878;
    --gris-light: #b5b3a8;
  }

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

  html { scroll-behavior: smooth; }

  body {
    background: var(--noir);
    color: var(--blanc);
    font-family: 'Montserrat', sans-serif;
    font-weight: 300;
    overflow-x: hidden;
  }

  /* ─── NAVIGATION ─── */
  nav {
    position: fixed; top: 0; left: 0; right: 0;
    z-index: 100;
    padding: 1.5rem 4rem;
    display: flex; justify-content: space-between; align-items: center;
    background: linear-gradient(to bottom, rgba(10,10,8,0.95) 0%, transparent 100%);
    backdrop-filter: blur(2px);
    transition: background 0.4s;
  }
  nav.scrolled { background: rgba(10,10,8,0.97); }

  .nav-logo {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.1rem;
    font-weight: 300;
    letter-spacing: 0.3em;
    color: var(--or);
    text-transform: uppercase;
    text-decoration: none;
  }

  .nav-links {
    display: flex; gap: 2.5rem; align-items: center;
    list-style: none;
  }
  .nav-links a {
    color: var(--gris-light);
    text-decoration: none;
    font-size: 1.05rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    transition: color 0.3s;
  }
  .nav-links a:hover { color: var(--or); }

  .lang-switch {
    display: flex; gap: 0.5rem;
  }
  .lang-btn {
    background: none; border: 1px solid var(--gris);
    color: var(--gris-light);
    font-family: 'Montserrat', sans-serif;
    font-size: 1.02rem; letter-spacing: 0.15em;
    padding: 0.3rem 0.7rem; cursor: pointer;
    text-transform: uppercase; transition: all 0.3s;
  }
  .lang-btn.active, .lang-btn:hover {
    border-color: var(--or); color: var(--or);
    background: rgba(201,168,76,0.08);
  }

  /* ─── HERO ─── */
  #hero {
    height: 100vh; min-height: 700px;
    position: relative;
    display: flex; flex-direction: column;
    justify-content: flex-end; align-items: flex-start;
    padding: 0 4rem 5rem;
    overflow: hidden;
  }

  .hero-bg {
    position: absolute; inset: 0;
    background:
      linear-gradient(135deg, rgba(10,10,8,0.88) 0%, rgba(10,10,8,0.55) 50%, rgba(10,10,8,0.78) 100%),
      linear-gradient(to bottom, rgba(10,10,8,0.35) 0%, rgba(10,10,8,0.92) 100%);
    z-index: 1;
  }

  /* Simulated mountain landscape — masqué si photo réelle présente */
  .hero-mountain {
    display: none;
  }
  .hero-mountain-css {
    position: absolute; inset: 0; z-index: 0;
    background:
      radial-gradient(ellipse 120% 80% at 60% 30%, #2a3a2a 0%, transparent 60%),
      radial-gradient(ellipse 80% 60% at 80% 20%, #1a2a1a 0%, transparent 50%),
      radial-gradient(ellipse 100% 90% at 30% 40%, #1e2e1e 0%, transparent 60%),
      linear-gradient(160deg, #0d1a0d 0%, #1a2a1a 30%, #0d1a0d 60%, #0a0a08 100%);
  }
  /* Snow caps */
  .hero-mountain::before {
    content: '';
    position: absolute; inset: 0;
    background:
      radial-gradient(ellipse 30% 20% at 65% 10%, rgba(240,235,220,0.15) 0%, transparent 70%),
      radial-gradient(ellipse 20% 15% at 80% 8%, rgba(240,235,220,0.1) 0%, transparent 70%),
      radial-gradient(ellipse 40% 25% at 40% 12%, rgba(240,235,220,0.08) 0%, transparent 70%);
  }
  /* Stars */
  .hero-mountain::after {
    content: '';
    position: absolute; inset: 0;
    background-image:
      radial-gradient(1px 1px at 20% 15%, rgba(255,255,255,0.4) 0%, transparent 100%),
      radial-gradient(1px 1px at 45% 8%, rgba(255,255,255,0.3) 0%, transparent 100%),
      radial-gradient(1px 1px at 70% 12%, rgba(255,255,255,0.35) 0%, transparent 100%),
      radial-gradient(1.5px 1.5px at 85% 5%, rgba(255,255,255,0.5) 0%, transparent 100%),
      radial-gradient(1px 1px at 10% 25%, rgba(255,255,255,0.25) 0%, transparent 100%),
      radial-gradient(1px 1px at 55% 18%, rgba(255,255,255,0.2) 0%, transparent 100%);
  }

  .hero-content { position: relative; z-index: 2; max-width: 700px; }

  .hero-eyebrow {
    font-size: 1.02rem; letter-spacing: 0.4em;
    color: var(--or); text-transform: uppercase;
    margin-bottom: 1.2rem;
    opacity: 0; animation: fadeUp 1s 0.3s forwards;
  }

  .hero-title {
    font-family: 'Cormorant Garamond', serif;
    font-size: clamp(3.8rem, 7vw, 6rem);
    font-weight: 300; line-height: 1.05;
    color: var(--blanc);
    margin-bottom: 1.5rem;
    opacity: 0; animation: fadeUp 1s 0.5s forwards;
  }
  .hero-title em {
    font-style: italic; color: var(--or-light);
  }

  .hero-sub {
    font-size: 1rem; letter-spacing: 0.12em;
    color: var(--gris-light); line-height: 1.9;
    margin-bottom: 2.5rem;
    opacity: 0; animation: fadeUp 1s 0.7s forwards;
  }

  .hero-stats {
    display: flex; gap: 3rem;
    margin-bottom: 2.5rem;
    opacity: 0; animation: fadeUp 1s 0.9s forwards;
  }
  .stat { border-left: 1px solid var(--or); padding-left: 1rem; }
  .stat-num {
    font-family: 'Cormorant Garamond', serif;
    font-size: 2.2rem; font-weight: 300;
    color: var(--or-light); line-height: 1;
  }
  .stat-label {
    font-size: 1rem; letter-spacing: 0.2em;
    color: var(--gris); text-transform: uppercase;
    margin-top: 0.3rem;
  }

  .cta-btn {
    display: inline-block;
    border: 1px solid var(--or);
    color: var(--or);
    padding: 1rem 2.5rem;
    font-size: 1.05rem; letter-spacing: 0.25em;
    text-transform: uppercase; text-decoration: none;
    font-family: 'Montserrat', sans-serif;
    transition: all 0.4s;
    cursor: pointer; background: none;
    opacity: 0; animation: fadeUp 1s 1.1s forwards;
  }
  .cta-btn:hover {
    background: var(--or); color: var(--noir);
  }

  .scroll-indicator {
    position: absolute; bottom: 2rem; right: 4rem;
    display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
    opacity: 0; animation: fadeIn 1s 1.5s forwards;
    z-index: 2;
  }
  .scroll-indicator span {
    font-size: 1.02rem; letter-spacing: 0.25em;
    color: var(--gris); text-transform: uppercase;
    writing-mode: vertical-rl;
  }
  .scroll-line {
    width: 1px; height: 60px;
    background: linear-gradient(to bottom, var(--or), transparent);
    animation: scrollPulse 2s infinite;
  }

  /* ─── SECTION GÉNÉRIQUE ─── */
  section { padding: 8rem 4rem; }

  .section-eyebrow {
    font-size: 1rem; letter-spacing: 0.4em;
    color: var(--or); text-transform: uppercase;
    margin-bottom: 1rem;
  }

  .section-title {
    font-family: 'Cormorant Garamond', serif;
    font-size: clamp(2.8rem, 4vw, 4rem);
    font-weight: 300; line-height: 1.15;
    color: var(--blanc); margin-bottom: 1.5rem;
  }
  .section-title em { font-style: italic; color: var(--or-light); }

  .section-intro {
    font-size: 1.1rem; line-height: 2;
    color: var(--gris-light); max-width: 600px;
  }

  .gold-line {
    width: 60px; height: 1px;
    background: var(--or);
    margin: 2rem 0;
  }

  /* ─── RAISONS ─── */
  #raisons { background: var(--noir-mid); }

  .raisons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 0;
    margin-top: 4rem;
    border: 1px solid rgba(201,168,76,0.15);
  }

  .raison-item {
    padding: 2.5rem;
    border-right: 1px solid rgba(201,168,76,0.12);
    border-bottom: 1px solid rgba(201,168,76,0.12);
    transition: background 0.4s;
    position: relative; overflow: hidden;
  }
  .raison-item::before {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(201,168,76,0.05) 0%, transparent 60%);
    opacity: 0; transition: opacity 0.4s;
  }
  .raison-item:hover::before { opacity: 1; }

  .raison-num {
    font-family: 'Cormorant Garamond', serif;
    font-size: 3.5rem; font-weight: 300;
    color: rgba(201,168,76,0.2); line-height: 1;
    margin-bottom: 0.5rem;
    position: absolute; top: 1.5rem; right: 2rem;
  }

  .raison-icon { font-size: 1.5rem; margin-bottom: 1rem; }

  .raison-title {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.3rem; font-weight: 400;
    color: var(--or-light); margin-bottom: 0.8rem;
    line-height: 1.3;
  }

  .raison-text {
    font-size: 1.05rem; line-height: 1.9;
    color: var(--gris-light);
  }

  /* ─── PROPRIÉTÉ ─── */
  #propriete {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 6rem; align-items: center;
  }

  /* ─── GALERIE ─── */
  #galerie { background: var(--noir-soft); padding: 6rem 0; }
  .galerie-header { padding: 0 4rem 3rem; }

  .galerie-track {
    display: flex; gap: 1.5rem;
    padding: 0 4rem;
    overflow-x: auto;
    scroll-behavior: smooth;
    scrollbar-width: none;
  }
  .galerie-track::-webkit-scrollbar { display: none; }

  .galerie-item {
    flex: 0 0 420px; height: 280px;
    border-radius: 2px;
    overflow: hidden; position: relative;
    cursor: pointer;
  }
  .galerie-img-placeholder {
    width: 100%; height: 100%;
    position: relative; overflow: hidden;
    border: 1px solid rgba(201,168,76,0.15);
    transition: border-color 0.4s;
    display: block;
  }
  /* L'image remplit tout le cadre et se croppe */
  .galerie-img-placeholder img {
    width: 100%; height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
  }
  .galerie-item:hover .galerie-img-placeholder img {
    transform: scale(1.03);
  }
  .galerie-item:hover .galerie-img-placeholder {
    border-color: rgba(201,168,76,0.4);
  }
  /* Label collé en bas, toujours visible */
  .galerie-label {
    position: absolute; bottom: 0; left: 0; right: 0;
    padding: 0.5rem 1rem;
    background: rgba(8,8,6,0.82);
    font-family: 'Cormorant Garamond', serif;
    font-size: 1rem; font-style: italic;
    color: var(--or-light);
    z-index: 2;
    letter-spacing: 0.05em;
  }
  .galerie-sublabel {
    font-size: 1rem; letter-spacing: 0.2em;
    color: var(--gris); display: block;
    margin-top: 0.2rem;
  }

  /* Faux paysages pour les placeholders */
  .g-house .galerie-img-placeholder {
    background: linear-gradient(160deg, #1a2a1a 0%, #0d1a0d 50%, #0a0a08 100%);
  }
  .g-mountain .galerie-img-placeholder {
    background: linear-gradient(160deg, #151f2a 0%, #0d1520 50%, #0a0a0f 100%);
  }
  .g-3d .galerie-img-placeholder {
    background: linear-gradient(160deg, #2a1a0d 0%, #1a0d08 50%, #0a0808 100%);
  }

  .galerie-nav {
    display: flex; gap: 1rem;
    padding: 2rem 4rem 0;
    justify-content: flex-end;
  }
  .galerie-btn {
    width: 48px; height: 48px;
    border: 1px solid rgba(201,168,76,0.3);
    background: none; color: var(--or);
    font-size: 1.2rem; cursor: pointer;
    transition: all 0.3s;
    display: flex; align-items: center; justify-content: center;
  }
  .galerie-btn:hover { background: var(--or); color: var(--noir); }

  .galerie-dots {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    padding: 1.2rem 0 0;
  }
  .galerie-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    border: none;
    background: rgba(201,168,76,0.25);
    cursor: pointer;
    transition: background 0.3s, transform 0.3s;
    padding: 0;
  }
  .galerie-dot.active {
    background: var(--or);
    transform: scale(1.4);
  }

  /* ─── POTENTIEL ─── */
  #potentiel { background: var(--noir-mid); }

  .potentiel-layout {
    display: grid; grid-template-columns: 1fr 1.2fr;
    gap: 5rem; margin-top: 4rem; align-items: start;
  }

  .chiffres-list { display: flex; flex-direction: column; gap: 0; }

  .chiffre-item {
    display: grid; grid-template-columns: 1fr 2fr;
    gap: 2rem; padding: 1.8rem 0;
    border-bottom: 1px solid rgba(201,168,76,0.1);
    align-items: center;
  }
  .chiffre-val {
    font-family: 'Cormorant Garamond', serif;
    font-size: 2.5rem; font-weight: 300;
    color: var(--or-light); text-align: right;
    line-height: 1;
  }
  .chiffre-val span {
    display: block; font-size: 1.05rem;
    color: var(--gris); margin-top: 0.3rem;
  }
  .chiffre-desc {
    font-size: 1.1rem; line-height: 1.8;
    color: var(--gris-light);
  }
  .chiffre-desc strong {
    display: block; color: var(--blanc);
    font-weight: 500; margin-bottom: 0.3rem;
    font-size: 1rem; letter-spacing: 0.03em;
  }

  .potentiel-note {
    background: rgba(201,168,76,0.06);
    border: 1px solid rgba(201,168,76,0.2);
    border-left: 3px solid var(--or);
    padding: 2rem;
    margin-top: 3rem;
  }
  .potentiel-note p {
    font-size: 1.1rem; line-height: 1.9;
    color: var(--gris-light);
  }
  .potentiel-note strong { color: var(--or-light); }

  /* ─── VISUALISATION 3D ─── */
  #vision {
    background: var(--noir-soft);
    position: relative; overflow: hidden;
  }
  #vision::before {
    content: '';
    position: absolute; top: 0; right: 0;
    width: 60%; height: 100%;
    background: radial-gradient(ellipse 80% 80% at 80% 50%, rgba(201,168,76,0.04) 0%, transparent 70%);
    pointer-events: none;
  }

  .vision-layout {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 5rem; align-items: center;
    position: relative;
  }

  .render-frame {
    aspect-ratio: 4/3;
    border: 1px solid rgba(201,168,76,0.2);
    position: relative; overflow: hidden;
    background: linear-gradient(160deg, #2a1a0d 0%, #1a0d08 40%, #0a0808 100%);
  }
  .render-frame::after {
    content: 'Vue 3D — Exemple de projet';
    position: absolute; bottom: 1rem; left: 1rem;
    font-size: 1.02rem; letter-spacing: 0.2em;
    color: rgba(201,168,76,0.5); text-transform: uppercase;
  }

  /* Représentation schématique du chalet dans le render frame */
  .chalet-sketch {
    position: absolute; inset: 15%;
    display: flex; flex-direction: column;
    align-items: center; justify-content: flex-end;
  }
  .sketch-roof {
    width: 0; height: 0;
    border-left: 120px solid transparent;
    border-right: 120px solid transparent;
    border-bottom: 80px solid rgba(201,168,76,0.15);
    position: relative; z-index: 1;
  }
  .sketch-body {
    width: 200px; height: 120px;
    background: rgba(201,168,76,0.08);
    border: 1px solid rgba(201,168,76,0.15);
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 8px; padding: 15px;
  }
  .sketch-window {
    background: rgba(201,168,76,0.2);
    border: 1px solid rgba(201,168,76,0.3);
  }
  .sketch-balcony {
    width: 220px; height: 15px;
    background: rgba(201,168,76,0.12);
    border: 1px solid rgba(201,168,76,0.2);
    margin-top: -5px;
  }
  .sketch-base {
    width: 240px; height: 40px;
    background: rgba(201,168,76,0.06);
    border: 1px solid rgba(201,168,76,0.12);
  }

  .vision-disclaimer {
    font-size: 1.02rem; letter-spacing: 0.08em;
    color: var(--gris); font-style: italic;
    margin-top: 1rem; line-height: 1.7;
  }

  /* ─── LOCATION ─── */
  #localisation {
    background: var(--noir);
    display: grid; grid-template-columns: 1.2fr 1fr;
    gap: 5rem; align-items: center;
  }

  .map-placeholder {
    aspect-ratio: 1;
    background:
      linear-gradient(135deg, rgba(30,30,24,0.9) 0%, rgba(10,10,8,0.95) 100%);
    border: 1px solid rgba(201,168,76,0.15);
    position: relative; overflow: hidden;
    display: flex; align-items: center; justify-content: center;
  }
  /* Fake topographic lines */
  .map-placeholder::before {
    content: '';
    position: absolute; inset: 0;
    background:
      repeating-linear-gradient(
        0deg,
        transparent,
        transparent 18px,
        rgba(201,168,76,0.05) 18px,
        rgba(201,168,76,0.05) 19px
      ),
      repeating-linear-gradient(
        90deg,
        transparent,
        transparent 18px,
        rgba(201,168,76,0.03) 18px,
        rgba(201,168,76,0.03) 19px
      );
  }
  .map-pin {
    width: 12px; height: 12px;
    background: var(--or);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(201,168,76,0.2), 0 0 0 8px rgba(201,168,76,0.1), 0 0 20px rgba(201,168,76,0.4);
    position: relative; z-index: 1;
    animation: pulse 2s infinite;
  }

  .distance-list { display: flex; flex-direction: column; gap: 0; }
  .dist-item {
    display: flex; justify-content: space-between; align-items: baseline;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(201,168,76,0.1);
  }
  .dist-name {
    font-size: 1.05rem; letter-spacing: 0.08em;
    color: var(--gris-light);
  }
  .dist-val {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.5rem; color: var(--or-light);
  }

  /* ─── CONTACT ─── */
  #contact {
    background: var(--noir-mid);
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 6rem; align-items: start;
  }

  .form-group { margin-bottom: 1.5rem; }
  .form-label {
    display: block; font-size: 1rem;
    letter-spacing: 0.25em; text-transform: uppercase;
    color: var(--gris); margin-bottom: 0.6rem;
  }
  .form-input, .form-select, .form-textarea {
    width: 100%;
    background: rgba(255,255,255,0.03);
    border: none; border-bottom: 1px solid rgba(201,168,76,0.25);
    color: var(--blanc);
    font-family: 'Montserrat', sans-serif;
    font-size: 1.05rem; font-weight: 300;
    padding: 0.8rem 0;
    outline: none; transition: border-color 0.3s;
  }
  .form-input:focus, .form-select:focus, .form-textarea:focus {
    border-bottom-color: var(--or);
  }
  .form-textarea { resize: vertical; min-height: 100px; }
  .form-select option { background: var(--noir-mid); }

  .form-submit {
    width: 100%; padding: 1.2rem;
    background: transparent;
    border: 1px solid var(--or);
    color: var(--or);
    font-family: 'Montserrat', sans-serif;
    font-size: 1.05rem; letter-spacing: 0.3em;
    text-transform: uppercase; cursor: pointer;
    transition: all 0.4s; margin-top: 1rem;
  }
  .form-submit:hover { background: var(--or); color: var(--noir); }

  .contact-info { padding-top: 1rem; }

  .confidential-note {
    margin-top: 3rem;
    padding: 1.5rem;
    border: 1px solid rgba(201,168,76,0.15);
    background: rgba(201,168,76,0.03);
  }
  .confidential-note p {
    font-size: 1.02rem; line-height: 1.8;
    color: var(--gris);
  }

  /* ─── FOOTER ─── */
  footer {
    background: var(--noir);
    padding: 3rem 4rem;
    border-top: 1px solid rgba(201,168,76,0.1);
    display: flex; justify-content: space-between; align-items: center;
  }
  .footer-logo {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1rem; letter-spacing: 0.3em;
    color: var(--or); text-transform: uppercase;
  }
  .footer-copy {
    font-size: 1rem; letter-spacing: 0.15em;
    color: var(--gris);
  }

  /* ─── ANIMATIONS ─── */
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(25px); }
    to { opacity: 1; transform: translateY(0); }
  }
  @keyframes fadeIn {
    from { opacity: 0; } to { opacity: 1; }
  }
  @keyframes scrollPulse {
    0%, 100% { transform: scaleY(1); opacity: 1; }
    50% { transform: scaleY(0.6); opacity: 0.4; }
  }
  @keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 4px rgba(201,168,76,0.2), 0 0 0 8px rgba(201,168,76,0.1), 0 0 20px rgba(201,168,76,0.4); }
    50% { box-shadow: 0 0 0 6px rgba(201,168,76,0.3), 0 0 0 12px rgba(201,168,76,0.15), 0 0 30px rgba(201,168,76,0.5); }
  }

  /* Reveal on scroll */
  .reveal {
    opacity: 0; transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
  }
  .reveal.visible { opacity: 1; transform: translateY(0); }
  .reveal-delay-1 { transition-delay: 0.15s; }
  .reveal-delay-2 { transition-delay: 0.3s; }
  .reveal-delay-3 { transition-delay: 0.45s; }

  /* ─── ÉQUATION INVESTISSEUR ─── */
  #equation {
    background: var(--noir-soft);
    border-top: 1px solid rgba(201,168,76,0.1);
    border-bottom: 1px solid rgba(201,168,76,0.1);
  }

  .equation-grid {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin: 3rem auto 2rem;
    max-width: 960px;
    flex-wrap: wrap;
  }

  .eq-item {
    flex: 1;
    min-width: 220px;
    max-width: 300px;
    text-align: center;
    padding: 2.5rem 2rem;
    border: 1px solid rgba(201,168,76,0.15);
    background: rgba(10,10,8,0.4);
  }

  .eq-item.eq-result {
    border-color: rgba(201,168,76,0.35);
    background: rgba(201,168,76,0.06);
  }

  .eq-eyebrow {
    font-size: 1rem;
    letter-spacing: 0.2em;
    color: var(--or);
    text-transform: uppercase;
    margin-bottom: 1rem;
  }

  .eq-val {
    font-family: 'Cormorant Garamond', serif;
    font-size: 2.2rem;
    font-weight: 300;
    color: var(--blanc);
    margin-bottom: 0.8rem;
    line-height: 1.1;
  }

  .eq-item.eq-result .eq-val {
    color: var(--or-light);
    font-size: 2.5rem;
  }

  .eq-note {
    font-size: 1rem;
    color: var(--gris);
    line-height: 1.5;
    letter-spacing: 0.02em;
  }

  .eq-operator {
    font-family: 'Cormorant Garamond', serif;
    font-size: 2.5rem;
    color: var(--or);
    opacity: 0.6;
    flex-shrink: 0;
    padding: 0 0.5rem;
  }

  .eq-disclaimer {
    text-align: center;
    font-size: 1rem;
    color: var(--gris);
    letter-spacing: 0.05em;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
  }

  /* ─── TRANSPARENCE ─── */
  #transparence {
    background: var(--noir-mid);
    border-top: 1px solid rgba(201,168,76,0.08);
  }

  .transparence-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2rem;
  }

  .transparence-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
  }

  .transparence-dot {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.5rem;
    color: var(--or);
    flex-shrink: 0;
    line-height: 1.4;
  }

  .transparence-item p {
    font-size: 1rem;
    color: var(--gris-light);
    line-height: 1.7;
  }

  /* ─── RESPONSIVE ─── */
  @media (max-width: 900px) {
    nav { padding: 1.2rem 1.5rem; }
    .nav-links { display: none; }
    section, #propriete, #localisation, #contact { padding: 4rem 1.5rem; }
    #hero { padding: 0 1.5rem 3.5rem; }
    #propriete, #localisation, #contact, .potentiel-layout, .vision-layout {
      grid-template-columns: 1fr; gap: 2.5rem;
    }
    .hero-stats { gap: 1.5rem; }
    .galerie-header, .galerie-track, .galerie-nav { padding-left: 1.5rem; padding-right: 1.5rem; }
    .scroll-indicator { display: none; }
    /* esquisses/plans : voir règle après leur définition */
    .galerie-item { flex: 0 0 280px; }
    footer { flex-direction: column; gap: 1rem; text-align: center; }
  }

  /* ─── ESQUISSES ARCHITECTURALES ─── */
  .esquisses-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
  .esquisse-item {
    position: relative; overflow: hidden;
    border: 1px solid rgba(201,168,76,0.15);
    cursor: pointer;
    transition: border-color 0.4s;
  }
  .esquisse-item:hover { border-color: rgba(201,168,76,0.4); }
  .esquisse-item img { width: 100%; height: auto; display: block; }
  .esquisse-label {
    position: absolute; bottom: 0; left: 0; right: 0;
    padding: 0.6rem 1rem;
    background: linear-gradient(to top, rgba(10,10,8,0.85) 0%, transparent 100%);
    font-size: 1rem; letter-spacing: 0.2em;
    color: var(--or-light); text-transform: uppercase;
  }

  /* ─── PLANS ARCHITECTURAUX ─── */
  .plans-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
  .plan-item { display: flex; flex-direction: column; gap: 0.6rem; }

  .propriete-specs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 1rem;
  }

  .propriete-photos-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }

  @media (max-width: 900px) {
    .esquisses-grid, .plans-grid, .propriete-specs-grid, .propriete-photos-grid { grid-template-columns: 1fr; }
  }
  .plan-label-top {
    font-size: 1rem; letter-spacing: 0.22em;
    color: var(--or); text-transform: uppercase;
    text-align: center;
  }
  /* Fond papier fixe pour les PNG transparents — lisible sur tous les thèmes */
  .plan-img-wrap {
    background: #f7f4ee;
    border: 1px solid rgba(201,168,76,0.2);
    padding: 1.5rem;
    display: flex; align-items: center; justify-content: center;
  }
  .plan-img-wrap img { width: 100%; height: auto; display: block; }

  /* ─── TOGGLE THÈME ─── */
  #theme-toggle {
    background: none;
    border: 1px solid var(--gris);
    color: var(--gris);
    font-size: 1rem;
    width: 32px; height: 32px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    border-radius: 50%;
    transition: all 0.3s;
    line-height: 1;
    padding: 0;
    flex-shrink: 0;
  }
  #theme-toggle:hover {
    border-color: var(--or);
    color: var(--or);
  }

  /* ─── LANGUE ─── */
  [data-lang] { display: none; }
  body.lang-fr [data-lang="fr"] { display: block; }
  body.lang-en [data-lang="en"] { display: block; }
  body.lang-fr span[data-lang="fr"],
  body.lang-en span[data-lang="en"] { display: inline; }
  body.lang-fr span[data-lang="en"],
  body.lang-en span[data-lang="fr"] { display: none; }
  body.lang-fr strong[data-lang="fr"],
  body.lang-en strong[data-lang="en"] { display: inline; }
  body.lang-fr strong[data-lang="en"],
  body.lang-en strong[data-lang="fr"] { display: none; }