/* Martin Fontaine — Mon Financement Auto | Design noir & blanc, épuré, premium */
:root{
  --noir:#111111;
  --noir-doux:#2b2b2b;
  --gris:#6e6e6e;
  --gris-clair:#f4f4f4;
  --gris-bordure:#e2e2e2;
  --blanc:#ffffff;
  --rouge:#c8102e;
  --rouge-fonce:#a50d26;
  --ombre:0 2px 12px rgba(0,0,0,.08);
  --rayon:10px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Lato',-apple-system,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  color:var(--noir);background:var(--blanc);line-height:1.6;font-size:16px;
}
h1,h2,h3,.serif{font-family:'DM Serif Display',Georgia,'Times New Roman',serif;font-weight:400;line-height:1.25}
img{max-width:100%;display:block}
a{color:inherit}
.wrap{max-width:1140px;margin:0 auto;padding:0 20px}
section{padding:56px 0}
section.grise{background:var(--gris-clair)}

/* ---------- Navigation ---------- */
header.nav{position:sticky;top:0;z-index:200;background:var(--noir);color:var(--blanc)}
.nav-inner{max-width:1140px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-family:'DM Serif Display',Georgia,serif;font-size:1.15rem;letter-spacing:.3px;text-decoration:none;color:var(--blanc)}
.logo small{display:block;font-family:'Lato',sans-serif;font-size:.62rem;letter-spacing:2.5px;color:#bbb;text-transform:uppercase}
nav.menu{display:flex;gap:6px;align-items:center}
nav.menu>a,nav.menu .drop>button{color:var(--blanc);text-decoration:none;padding:10px 14px;font-size:.95rem;background:none;border:0;cursor:pointer;font-family:inherit}
nav.menu>a:hover,nav.menu .drop>button:hover{background:#222;border-radius:6px}
.drop{position:relative}
.drop-panel{position:absolute;top:100%;left:0;background:var(--blanc);color:var(--noir);min-width:190px;border-radius:8px;box-shadow:var(--ombre);padding:8px;display:none}
.drop:hover .drop-panel,.drop:focus-within .drop-panel{display:block}
.drop-panel a{display:block;padding:10px 14px;text-decoration:none;border-radius:6px;font-size:.93rem}
.drop-panel a:hover{background:var(--gris-clair)}
.burger{display:none;background:none;border:0;color:#fff;font-size:1.6rem;cursor:pointer}

/* ---------- Boutons ---------- */
.btn{display:inline-block;text-decoration:none;border:0;cursor:pointer;font-family:inherit;
  font-size:1rem;font-weight:700;padding:13px 26px;border-radius:8px;transition:transform .08s,background .15s;text-align:center}
.btn:active{transform:scale(.98)}
.btn-noir{background:var(--noir);color:#fff}
.btn-noir:hover{background:#000}
.btn-blanc{background:#fff;color:var(--noir);border:1.5px solid var(--noir)}
.btn-blanc:hover{background:var(--gris-clair)}
.btn-rouge{background:var(--rouge);color:#fff}
.btn-rouge:hover{background:var(--rouge-fonce)}
.btn-contour{background:transparent;color:var(--noir);border:1.5px solid #bbb}
.btn-contour:hover{border-color:var(--noir)}
.btn-petit{padding:9px 16px;font-size:.9rem}
.btn-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:18px}

/* ---------- Hero ---------- */
.hero{background:var(--noir);color:#fff;padding:64px 0}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.hero-photo img{border-radius:14px;box-shadow:0 8px 30px rgba(0,0,0,.45);aspect-ratio:1;object-fit:cover;width:100%}
.hero h1{font-size:2.6rem;margin-bottom:6px}
.hero .soustitre{color:#cfcfcf;letter-spacing:3px;text-transform:uppercase;font-size:.8rem;margin-bottom:18px}
.hero p.accroche{color:#e8e8e8;font-size:1.08rem;margin-bottom:8px}
.hero .tel-grand{font-size:1.35rem;font-weight:700;margin:14px 0 4px}
.hero .tel-grand a{color:#fff;text-decoration:none}

/* ---------- Recherche budget ---------- */
.budget{background:#fff;border-radius:14px;box-shadow:var(--ombre);padding:26px;margin-top:-34px;position:relative;z-index:5}
.budget h2{font-size:1.4rem;margin-bottom:4px}
.budget p{color:var(--gris);font-size:.95rem;margin-bottom:16px}
.budget-form{display:grid;grid-template-columns:1fr 1fr auto;gap:12px;align-items:end}
.champ label{display:block;font-size:.82rem;font-weight:700;margin-bottom:6px;text-transform:uppercase;letter-spacing:.5px;color:var(--gris)}
.champ input,.champ select{width:100%;padding:12px 14px;border:1.5px solid var(--gris-bordure);border-radius:8px;font-size:1rem;font-family:inherit}
.champ input:focus,.champ select:focus{outline:none;border-color:var(--noir)}

/* ---------- Cartes véhicules ---------- */
.grille{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:22px;margin-top:26px}
.carte{background:#fff;border:1px solid var(--gris-bordure);border-radius:var(--rayon);overflow:hidden;text-decoration:none;color:inherit;transition:box-shadow .15s,transform .15s;display:flex;flex-direction:column}
.carte:hover{box-shadow:0 8px 24px rgba(0,0,0,.12);transform:translateY(-3px)}
.carte .vignette{aspect-ratio:4/3;overflow:hidden;background:var(--gris-clair)}
.carte .vignette img{width:100%;height:100%;object-fit:cover}
.carte .corps{padding:16px;display:flex;flex-direction:column;gap:6px;flex:1}
.carte h3{font-size:1.08rem}
.carte .meta{color:var(--gris);font-size:.88rem}
.carte .prix{font-size:1.25rem;font-weight:700;margin-top:4px}
.carte .sem{font-size:.92rem;color:var(--noir)}
.carte .sem small{color:var(--gris)}
.carte .cta{margin-top:10px}
.sans-photo{aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;background:var(--gris-clair);color:var(--gris);font-size:.9rem}

/* ---------- Filtres inventaire ---------- */
.filtres{background:#fff;border:1px solid var(--gris-bordure);border-radius:12px;padding:20px;margin-bottom:8px}
.filtres .ligne{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-bottom:14px}
.filtres input[type=range]{width:100%}
.valeur-filtre{font-size:.85rem;color:var(--gris)}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{border:1.5px solid var(--gris-bordure);background:#fff;border-radius:999px;padding:8px 16px;cursor:pointer;font-size:.9rem;font-family:inherit}
.chip.actif{background:var(--noir);color:#fff;border-color:var(--noir)}
.compte{color:var(--gris);font-size:.95rem;margin:14px 0 0}

/* ---------- Fiche véhicule ---------- */
.fiche-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:36px;margin-top:8px}
.galerie .principale{border-radius:12px;overflow:hidden;background:var(--gris-clair);aspect-ratio:4/3}
.galerie .principale img{width:100%;height:100%;object-fit:cover}
.miniatures{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;margin-top:10px}
.miniatures img{border-radius:6px;cursor:pointer;aspect-ratio:4/3;object-fit:cover;border:2px solid transparent}
.miniatures img.actif{border-color:var(--rouge)}
.fiche-info h1{font-size:2rem;margin-bottom:8px}
.fiche-prix{font-size:2rem;font-weight:700;margin:12px 0 2px}
.fiche-sem{font-size:1.15rem;margin-bottom:4px}
.indicatif{font-size:.8rem;color:var(--gris)}
.specs{width:100%;border-collapse:collapse;margin:20px 0}
.specs td{padding:9px 4px;border-bottom:1px solid var(--gris-bordure);font-size:.95rem}
.specs td:first-child{color:var(--gris);width:42%}
.desc{color:var(--noir-doux);margin:6px 0 18px}

/* ---------- Formulaires ---------- */
.form-carte{background:#fff;border:1px solid var(--gris-bordure);border-radius:12px;padding:28px;box-shadow:var(--ombre);max-width:640px}
.form-carte .champ{margin-bottom:16px}
textarea{width:100%;padding:12px 14px;border:1.5px solid var(--gris-bordure);border-radius:8px;font-size:1rem;font-family:inherit;min-height:90px}
.resultat{background:var(--gris-clair);border-radius:10px;padding:20px;margin-top:18px}
.resultat .gros{font-size:1.6rem;font-weight:700}
.etape{margin-bottom:26px}
.etape h3{margin-bottom:10px}
.radio-ligne{display:flex;gap:10px;flex-wrap:wrap}
.radio-ligne label{border:1.5px solid var(--gris-bordure);border-radius:8px;padding:10px 16px;cursor:pointer;font-size:.95rem}
.radio-ligne input{display:none}
.radio-ligne input:checked+span{font-weight:700}
.radio-ligne label:has(input:checked){border-color:var(--noir);background:var(--gris-clair)}

/* ---------- Panneau chat ---------- */
#panneau-aide{position:fixed;top:76px;right:18px;width:300px;background:#fff;border:1px solid var(--gris-bordure);
  border-radius:12px;box-shadow:0 10px 34px rgba(0,0,0,.16);z-index:300;overflow:hidden}
#panneau-aide .tete{background:var(--noir);color:#fff;padding:12px 14px;display:flex;justify-content:space-between;align-items:center}
#panneau-aide .tete strong{font-size:.95rem}
#panneau-aide .tete button{background:none;border:0;color:#fff;font-size:1.2rem;cursor:pointer}
#panneau-aide .corps{padding:14px}
#panneau-aide .corps p{font-size:.88rem;color:var(--gris);margin-bottom:10px}
#panneau-aide input{width:100%;padding:10px 12px;border:1.5px solid var(--gris-bordure);border-radius:8px;margin-bottom:8px;font-size:.92rem;font-family:inherit}
#bulle-aide{position:fixed;top:76px;right:18px;z-index:300;display:none;background:var(--noir);color:#fff;
  border:0;border-radius:999px;padding:12px 20px;font-size:.92rem;cursor:pointer;font-family:inherit;box-shadow:var(--ombre)}

/* ---------- Barre mobile ---------- */
#barre-mobile{display:none;position:fixed;bottom:0;left:0;right:0;z-index:250;background:var(--noir);
  padding:10px 12px calc(10px + env(safe-area-inset-bottom));grid-template-columns:1fr 1fr 1fr;gap:10px}
#barre-mobile a{text-align:center;text-decoration:none;font-weight:700;font-size:.92rem;padding:12px 4px;border-radius:8px}
#barre-mobile .tel{background:var(--rouge);color:#fff}
#barre-mobile .sms{background:#fff;color:var(--noir)}
#barre-mobile .fin{background:transparent;color:#fff;border:1.5px solid #555}

/* ---------- Pied de page ---------- */
footer{background:var(--noir);color:#cfcfcf;padding:44px 0 90px;margin-top:20px}
footer .cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:26px}
footer h4{color:#fff;margin-bottom:10px;font-size:1rem}
footer a{color:#cfcfcf;text-decoration:none;display:block;margin-bottom:6px;font-size:.93rem}
footer a:hover{color:#fff}
footer .bas{margin-top:26px;padding-top:18px;border-top:1px solid #333;font-size:.82rem;color:#999}

/* ---------- Divers ---------- */
.bandeau-cta{background:var(--noir);color:#fff;border-radius:14px;padding:38px;text-align:center;margin:20px 0}
.bandeau-cta h2{margin-bottom:8px}
.bandeau-cta p{color:#d5d5d5;margin-bottom:6px}
.liste-puces{list-style:none;margin:14px 0}
.liste-puces li{padding:8px 0 8px 30px;position:relative}
.liste-puces li::before{content:"✓";position:absolute;left:6px;font-weight:700}
.titre-section{font-size:1.9rem;margin-bottom:6px}
.sous-titre{color:var(--gris);margin-bottom:8px}
.centre{text-align:center}
.mt{margin-top:26px}
.note{font-size:.85rem;color:var(--gris)}

@media(max-width:860px){
  .hero-grid{grid-template-columns:1fr}
  .hero h1{font-size:2rem}
  .budget-form{grid-template-columns:1fr}
  .fiche-grid{grid-template-columns:1fr}
  nav.menu{display:none;position:absolute;top:64px;left:0;right:0;background:var(--noir);flex-direction:column;align-items:stretch;padding:10px}
  nav.menu.ouvert{display:flex}
  .burger{display:block}
  .drop-panel{position:static;box-shadow:none;background:#1c1c1c;margin:4px 0}
  .drop-panel a{color:#fff}
  #panneau-aide{width:calc(100vw - 36px)}
  #barre-mobile{display:grid}
  body{padding-bottom:74px}
  section{padding:40px 0}
}