/* =========================================================
   L'OSTÉ — Arts, Objets & Mobilier
   Feuille de style principale
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;1,400;1,500&family=Jost:wght@300;400;500;600&display=swap');

:root{
  --cream:        #f4efe4;
  --cream-alt:     #ece3d2;
  --cream-deep:    #e3d8c1;
  --ink:           #15130f;
  --ink-soft:      #2c2820;
  --muted:         #756a5c;
  --gold:          #b3894f;
  --gold-light:    #c9a875;
  --white:         #ffffff;
  --line:          rgba(21,19,15,0.12);
  --line-on-dark:  rgba(244,239,228,0.18);

  --serif: 'Playfair Display', 'Georgia', serif;
  --sans:  'Jost', 'Helvetica Neue', Arial, sans-serif;

  --container: 1180px;
  --radius: 2px;
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--sans);
  color: var(--ink-soft);
  background: var(--cream);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}
img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration: none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{
  font-family: var(--serif);
  font-weight: 500;
  color: var(--ink);
  line-height: 1.15;
  margin: 0 0 .5em;
}
p{ margin: 0 0 1em; }

.container{
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

.eyebrow{
  display:inline-block;
  font-family: var(--sans);
  font-size: 12.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 14px;
}
.eyebrow::before{
  content:"";
  display:inline-block;
  width: 26px;
  height:1px;
  background: var(--gold);
  margin-right: 10px;
  vertical-align: middle;
}

.rule{
  width: 56px;
  height: 1px;
  background: var(--gold);
  margin: 18px 0 22px;
}
.rule.center{ margin-left:auto; margin-right:auto; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding: 15px 30px;
  font-family: var(--sans);
  font-size: 12.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  border: 1px solid transparent;
  cursor:pointer;
  transition: background .25s ease, color .25s ease, border-color .25s ease, transform .2s ease;
  white-space: nowrap;
}
.btn-primary{
  background: var(--ink);
  color: var(--cream);
  border-color: var(--ink);
}
.btn-primary:hover{ background: var(--gold); border-color: var(--gold); color: var(--ink); }
.btn-outline{
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}
.btn-outline:hover{ background: var(--ink); color: var(--cream); }
.btn-outline-light{
  background: transparent;
  color: var(--cream);
  border-color: var(--line-on-dark);
}
.btn-outline-light:hover{ background: var(--cream); color: var(--ink); border-color: var(--cream); }
.btn-gold{
  background: var(--gold);
  color: var(--ink);
  border-color: var(--gold);
}
.btn-gold:hover{ background: var(--ink); color: var(--cream); border-color:var(--ink); }

/* ---------- Header ---------- */
.site-header{
  position: sticky;
  top:0;
  z-index: 100;
  background: var(--ink);
  border-bottom: 1px solid rgba(244,239,228,0.08);
}
.site-header .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height: 92px;
}
.logo-link{ display:flex; align-items:center; flex: 0 0 auto; }
.logo-link img{ height: 32px; width: 104px; flex-shrink:0; }

.nav-main{ display:flex; align-items:center; gap: 22px; flex: 1 1 auto; justify-content:center; }
.nav-main a{
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--cream);
  opacity:.82;
  padding: 6px 0;
  white-space: nowrap;
  border-bottom: 1px solid transparent;
  transition: opacity .2s ease, border-color .2s ease;
}
.nav-main a:hover,
.nav-main a.active{ opacity:1; border-color: var(--gold); }

.header-actions{ display:flex; align-items:center; gap:18px; flex: 0 0 auto; }
.header-actions .btn{ padding: 12px 22px; white-space:nowrap; }

.nav-toggle{
  display:none;
  flex-direction:column;
  gap:5px;
  background:none;
  border:none;
  cursor:pointer;
  padding:8px;
}
.nav-toggle span{
  width: 24px; height:1px; background: var(--cream);
}

/* ---------- Hero ---------- */
.hero{
  background: var(--cream);
  border-bottom: 1px solid var(--line);
}
.hero .container{
  display:grid;
  grid-template-columns: 1.05fr .95fr;
  align-items:center;
  gap: 60px;
  padding-top: 76px;
  padding-bottom: 76px;
  min-height: 560px;
}
.hero h1{
  font-size: clamp(38px, 5vw, 58px);
  letter-spacing: .01em;
}
.hero h1 em{ font-style: italic; color: var(--gold); font-weight: 400; }
.hero p.lead{
  max-width: 480px;
  color: var(--muted);
  font-size: 16.5px;
}
.hero-actions{ display:flex; gap: 16px; margin-top: 30px; flex-wrap:wrap; }

.hero-art{
  position:relative;
  aspect-ratio: 1/1;
  border: 1px solid var(--line);
  background:
    radial-gradient(ellipse at 30% 20%, var(--cream-alt), var(--cream) 60%);
  display:flex;
  align-items:center;
  justify-content:center;
}
.hero-art svg{ width: 62%; height:62%; }
.hero-art::before{
  content:"";
  position:absolute; inset: 18px;
  border: 1px solid var(--gold-light);
  opacity:.5;
}

/* ---------- Page header (pages secondaires) ---------- */
.page-header{
  background: var(--ink);
  color: var(--cream);
  padding: 86px 0 54px;
}
.page-header .eyebrow{ color: var(--gold-light); }
.page-header .eyebrow::before{ background: var(--gold-light); }
.page-header h1{ color: var(--cream); font-size: clamp(32px,4.2vw,46px); }
.page-header p{ color: rgba(244,239,228,0.72); max-width: 620px; font-size:16px; }
.breadcrumb{
  font-size: 11.5px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color: rgba(244,239,228,0.5);
  margin-bottom: 18px;
}
.breadcrumb a{ color: rgba(244,239,228,0.75); }
.breadcrumb a:hover{ color: var(--gold-light); }

/* ---------- Sections ---------- */
section{ padding: 84px 0; }
.section-alt{ background: var(--cream-alt); }
.section-dark{ background: var(--ink); color: var(--cream); }
.section-dark h2{ color: var(--cream); }
.section-dark .muted{ color: rgba(244,239,228,0.68); }

.section-head{ max-width: 640px; margin-bottom: 52px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }
.section-head h2{ font-size: clamp(28px, 3.4vw, 38px); }
.muted{ color: var(--muted); }
.muted-small{ color: var(--muted); font-size: 13px; }
.muted-small a{ text-decoration: underline; text-underline-offset: 2px; }

/* ---------- Services grid ---------- */
.services-grid{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.service-card{
  background: var(--cream);
  padding: 40px 30px;
  text-align:center;
}
.service-card .icon{
  width: 46px; height:46px;
  margin: 0 auto 22px;
  color: var(--gold);
}
.service-card .icon svg{ width:100%; height:100%; }
.service-card h3{ font-size: 18px; margin-bottom: 12px; }
.service-card p{ font-size: 14.5px; color: var(--muted); margin-bottom: 18px; }
.service-card .more{
  font-size: 11.5px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color: var(--ink);
  display:inline-flex;
  align-items:center;
  gap:8px;
}
.service-card .more svg{ width:12px; height:12px; }

/* ---------- Split content (image/text) ---------- */
.split{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items:center;
}
.split.reverse .split-art{ order:2; }
.split-art{
  position:relative;
  aspect-ratio: 4/3.1;
  border:1px solid var(--line);
  background: linear-gradient(160deg, var(--cream-alt), var(--cream));
  display:flex; align-items:center; justify-content:center;
}
.split-art svg{ width:44%; height:44%; color: var(--gold); }
.split h2{ font-size: clamp(26px,3vw,34px); }
.split ul.check-list{ margin-top: 22px; }
.check-list li{
  display:flex;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}
.check-list li:last-child{ border-bottom:none; }
.check-list svg{ width:16px; height:16px; flex-shrink:0; margin-top:3px; color: var(--gold); }

/* ---------- Steps ---------- */
.steps{
  display:grid;
  grid-template-columns: repeat(4,1fr);
  gap: 40px;
  counter-reset: step;
}
.step{ position:relative; padding-top: 10px; }
.step::before{
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font-family: var(--serif);
  font-style: italic;
  font-size: 34px;
  color: var(--gold);
  display:block;
  margin-bottom: 14px;
}
.step h3{ font-size: 17px; margin-bottom: 8px; }
.step p{ font-size: 14.5px; color: var(--muted); }

/* ---------- Cards (auctions / gallery) ---------- */
.gallery-grid{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.gallery-card{
  border: 1px solid var(--line);
  background: var(--cream);
}
.gallery-thumb{
  aspect-ratio: 1/1;
  background: linear-gradient(150deg, var(--cream-deep), var(--cream-alt));
  display:flex; align-items:center; justify-content:center;
  position:relative;
  border-bottom: 1px solid var(--line);
}
.gallery-thumb svg{ width:34%; height:34%; color: var(--gold); opacity:.85; }
.gallery-thumb img{ width:100%; height:100%; object-fit:cover; display:block; }
.gallery-thumb .ph-tag{
  position:absolute; bottom:10px; left:10px;
  font-size: 10px; letter-spacing:.08em; text-transform:uppercase;
  color: var(--muted);
  background: rgba(244,239,228,.85);
  padding: 4px 8px;
}
.gallery-info{ padding: 16px 18px 20px; }
.gallery-info h4{ font-size:14.5px; margin-bottom:4px; font-family:var(--sans); font-weight:500; color:var(--ink);}
.gallery-info span{ font-size:12.5px; color:var(--muted); }

/* ---------- CTA banner ---------- */
.cta-banner{
  background: var(--ink);
  color: var(--cream);
  padding: 64px 0;
}
.cta-banner .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-banner h2{ color: var(--cream); font-size: clamp(24px,3vw,32px); margin-bottom:6px; }
.cta-banner p{ color: rgba(244,239,228,0.68); margin:0; }
.cta-actions{ display:flex; gap:16px; flex-wrap:wrap; }

/* ---------- Two-tone info blocks (home) ---------- */
.info-duo{
  display:grid;
  grid-template-columns: 1fr 1fr;
}
.info-block{ padding: 70px 60px; }
.info-block.dark{ background: var(--ink); color: var(--cream); }
.info-block.dark h3{ color: var(--cream); }
.info-block.light{ background: var(--cream-alt); }
.info-block p{ max-width: 420px; }
.info-block.dark p{ color: rgba(244,239,228,.7); }
.info-block.light p{ color: var(--muted); }

/* ---------- Contact ---------- */
.contact-grid{
  display:grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 64px;
}
.contact-info-list{ margin-top: 28px; }
.contact-info-list li{
  display:flex; gap:16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.contact-info-list li:first-child{ padding-top:0; }
.contact-info-list svg{ width:20px; height:20px; color: var(--gold); flex-shrink:0; margin-top:2px; }
.contact-info-list h4{ font-size:14px; text-transform:uppercase; letter-spacing:.08em; font-family:var(--sans); font-weight:600; color:var(--ink); margin-bottom:4px;}
.contact-info-list p{ margin:0; color: var(--muted); font-size:15px; }
.contact-info-list p a:hover{ color: var(--gold); }

.form-grid{ display:grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-grid .full{ grid-column: 1 / -1; }
.field label{
  display:block;
  font-size: 11.5px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}
.field input, .field select, .field textarea{
  width:100%;
  font-family: var(--sans);
  font-size: 15px;
  padding: 13px 14px;
  background: var(--cream);
  border: 1px solid var(--line);
  color: var(--ink);
  border-radius: var(--radius);
}
.field input:focus, .field select:focus, .field textarea:focus{
  outline:none;
  border-color: var(--gold);
}
.field textarea{ resize: vertical; min-height: 120px; }
.contact-form{ background: var(--white); border:1px solid var(--line); padding: 40px; }
.form-note{ font-size: 12.5px; color: var(--muted); margin-top: 14px; }
.form-error{ background:#fbeceb; border:1px solid #e2b3af; color:#8a2f28; font-size:13.5px; padding:12px 16px; margin-bottom:22px; }

.map-frame{
  margin-top: 32px;
  aspect-ratio: 16/8;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--cream-alt), var(--cream));
  display:flex; align-items:center; justify-content:center;
  color: var(--muted);
  font-size: 13px;
  letter-spacing:.05em;
  overflow: hidden;
}
.map-frame iframe{ width:100%; height:100%; border:0; display:block; }

/* ---------- Contenu légal (politique de confidentialité, etc.) ---------- */
.legal-content{ max-width: 760px; }
.legal-content h2{ font-size: 24px; margin-top: 2.2em; }
.legal-content h2:first-child{ margin-top: 0; }
.legal-content h3{ font-family: var(--sans); font-weight:600; font-size: 15.5px; text-transform:uppercase; letter-spacing:.04em; color: var(--ink); margin-top: 1.6em; }
.legal-content p{ color: var(--ink-soft); line-height: 1.7; }
.legal-content ul{ list-style: disc; padding-left: 22px; color: var(--ink-soft); line-height: 1.7; margin-bottom: 1em; }
.legal-content li{ margin-bottom: .4em; }
.legal-content .muted-small{ font-size: 13px; color: var(--muted); }

/* ---------- FAQ / accordion (optional use) ---------- */
.faq-item{ border-bottom: 1px solid var(--line); padding: 22px 0; }
.faq-item h4{ font-family: var(--sans); font-weight:500; font-size:16px; margin:0; color:var(--ink); }

/* ---------- Footer ---------- */
.site-footer{
  background: var(--ink);
  color: rgba(244,239,228,0.75);
  padding: 0 0 26px;
}
.newsletter-bar{
  background: var(--ink-soft);
  border-bottom: 1px solid rgba(244,239,228,0.1);
  padding: 54px 0;
}
.newsletter-bar .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 48px;
}
.newsletter-text{ max-width: 440px; }
.newsletter-text h3{ color: var(--cream); font-size: clamp(21px,2.6vw,27px); margin-bottom: 8px; }
.newsletter-text p{ color: rgba(244,239,228,0.68); margin:0; }
.newsletter-embed{
  flex: 0 0 auto;
  width: 380px;
  max-width: 100%;
  background: var(--white);
  border-radius: 4px;
  overflow: hidden;
}
.newsletter-embed iframe{ display:block; width:100%; border:0; }
.footer-grid{
  padding-top: 74px;
  display:grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(244,239,228,0.1);
}
.footer-grid img{ height: 30px; margin-bottom: 16px; }
.footer-col h5{
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color: var(--gold-light);
  margin-bottom: 18px;
}
.footer-col ul li{ margin-bottom: 11px; font-size: 14px; }
.footer-col ul li a:hover{ color: var(--cream); }
.footer-col p{ font-size: 14px; margin-bottom: 8px; color: rgba(244,239,228,0.75); }
.footer-col p a:hover{ color: var(--gold-light); }
.social-row{ display:flex; gap:12px; margin-top:18px; }
.social-row a{
  width:34px; height:34px;
  border:1px solid rgba(244,239,228,0.25);
  display:flex; align-items:center; justify-content:center;
  border-radius: 50%;
  transition: border-color .2s ease, background .2s ease;
}
.social-row a:hover{ background: var(--gold-light); border-color: var(--gold-light); color: var(--ink); }
.social-row svg{ width:15px; height:15px; }
.footer-bottom{
  display:flex; justify-content:space-between; align-items:center;
  padding-top: 26px;
  font-size: 12.5px;
  color: rgba(244,239,228,0.45);
  flex-wrap:wrap; gap:10px;
}
.footer-bottom a:hover{ color: var(--gold-light); }

/* ---------- Utilities ---------- */
.text-center{ text-align:center; }
.mt-0{ margin-top:0; }

/* ---------- Responsive ---------- */
@media (max-width: 980px){
  .services-grid{ grid-template-columns: repeat(2,1fr); }
  .gallery-grid{ grid-template-columns: repeat(2,1fr); }
  .steps{ grid-template-columns: repeat(2,1fr); }
  .info-duo{ grid-template-columns: 1fr; }
  .split, .split.reverse{ grid-template-columns: 1fr; }
  .split.reverse .split-art{ order: 0; }
  .contact-grid{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr 1fr; }
  .hero .container{ grid-template-columns: 1fr; padding-top:52px; padding-bottom:52px; }
  .hero-art{ max-width: 380px; margin: 0 auto; }
}
@media (max-width: 760px){
  .nav-main, .header-actions{ display:none; }
  .nav-toggle{ display:flex; }
  .site-header .container{ height: 78px; }
  section{ padding: 56px 0; }
  .services-grid{ grid-template-columns: 1fr; }
  .gallery-grid{ grid-template-columns: 1fr 1fr; }
  .steps{ grid-template-columns: 1fr; }
  .form-grid{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr; gap: 30px; }
  .cta-banner .container{ flex-direction:column; align-items:flex-start; }
  .newsletter-bar .container{ flex-direction:column; align-items:flex-start; }
  .newsletter-embed{ width:100%; }
  .info-block{ padding: 50px 28px; }

  body.nav-open .nav-main{
    display:flex;
    position:fixed;
    inset: 78px 0 0 0;
    background: var(--ink);
    flex-direction:column;
    align-items:flex-start;
    padding: 30px 32px;
    gap: 22px;
    overflow-y:auto;
    z-index: 90;
  }
  body.nav-open .nav-main a{ font-size: 15px; }
  body.nav-open .header-actions{
    display:flex;
    position:fixed;
    left:32px; right:32px; bottom: 30px;
    z-index: 91;
  }
  body.nav-open .header-actions .btn{ width:100%; }
}