/* =========================================================
   ADF SOFT — Feuille de style moderne et responsive
   ========================================================= */

:root {
  --bleu:        #51677b;   /* bleu-gris ardoise (couleur de la bannière) */
  --bleu-fonce:  #3b4d5e;
  --bleu-clair:  #eceff3;
  --gris-texte:  #2b2f33;
  --gris-doux:   #5a636b;
  --gris-bord:   #e2e6ea;
  --gris-fond:   #f5f7f9;
  --blanc:       #ffffff;
  --radius:      10px;
  --ombre:       0 2px 10px rgba(0, 0, 0, .06);
  --largeur:     1080px;
}

/* --- Base --- */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  color: var(--gris-texte);
  background: var(--gris-fond);
}

img { max-width: 100%; height: auto; }

a { color: var(--bleu); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { color: var(--bleu-fonce); line-height: 1.25; font-weight: 600; }
h1 { font-size: 2rem; margin: 0 0 .8rem; }
h2 { font-size: 1.35rem; margin: 1.8rem 0 .6rem; }

/* --- Barre de contact (au-dessus de la bannière) --- */
.topbar { background: var(--bleu-fonce); color: #e7edf2; font-size: .9rem; }
.topbar-inner {
  max-width: var(--largeur);
  margin: 0 auto;
  padding: 7px 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
  align-items: center;
}
.topbar a { color: #fff; }
.topbar .tel { font-weight: 600; color: #fff; }
.topbar .sep { margin-left: auto; }

/* --- En-tête / bannière (logo réel) --- */
.site-header {
  background: var(--blanc);
  border-bottom: 3px solid var(--bleu);
  box-shadow: var(--ombre);
  text-align: center;
}
.banniere { display: block; }
.banniere img {
  display: block;
  width: 100%;
  max-width: var(--largeur);
  height: auto;
  margin: 0 auto;
}

/* --- Navigation --- */
.nav {
  background: var(--bleu-fonce);
  position: sticky; top: 0; z-index: 100;
}
.nav-inner {
  max-width: var(--largeur);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
}
.nav a {
  color: #dce8f3;
  padding: 14px 20px;
  font-weight: 500;
  font-size: .98rem;
  text-decoration: none;
  border-bottom: 3px solid transparent;
  transition: background .15s, color .15s;
}
.nav a:hover { background: rgba(255,255,255,.08); color: #fff; text-decoration: none; }
.nav a.actif { background: var(--bleu); color: #fff; border-bottom-color: #fff; }

/* Bouton menu mobile */
.nav-toggle {
  display: none;
  background: none; border: 0; color: #fff;
  font-size: 1.5rem; padding: 12px 18px; cursor: pointer;
}

/* --- Bandeau d'accueil (hero) --- */
.hero {
  background: linear-gradient(120deg, var(--bleu-fonce), var(--bleu));
  color: #fff;
  text-align: center;
  padding: 48px 20px;
}
.hero h1 { color: #fff; font-size: 2.3rem; margin-bottom: .5rem; }
.hero p { max-width: 720px; margin: 0 auto; font-size: 1.12rem; opacity: .95; }
.hero .btn { margin-top: 1.5rem; }

/* --- Contenu --- */
main { max-width: var(--largeur); margin: 0 auto; padding: 36px 20px 10px; }

.carte {
  background: var(--blanc);
  border: 1px solid var(--gris-bord);
  border-radius: var(--radius);
  box-shadow: var(--ombre);
  padding: 30px 34px;
  margin-bottom: 28px;
}

.btn {
  display: inline-block;
  background: var(--bleu);
  color: #fff !important;
  padding: 12px 26px;
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none !important;
  transition: background .15s;
}
.btn:hover { background: var(--bleu-fonce); }
.btn-clair { background: #fff; color: var(--bleu-fonce) !important; }
.btn-clair:hover { background: var(--bleu-clair); }

/* --- Grille de cartes (services) --- */
.grille {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 22px;
  margin: 10px 0 4px;
}
.service {
  background: var(--blanc);
  border: 1px solid var(--gris-bord);
  border-radius: var(--radius);
  box-shadow: var(--ombre);
  padding: 26px;
  transition: transform .15s, box-shadow .15s;
}
.service:hover { transform: translateY(-4px); box-shadow: 0 8px 22px rgba(0,0,0,.10); }
.service .ico { font-size: 2.2rem; margin-bottom: .4rem; }
.service h3 { margin: 0 0 .5rem; font-size: 1.2rem; }
.service p { margin: 0 0 .8rem; color: var(--gris-doux); font-size: .98rem; }

/* --- Images dans le contenu --- */
.img-droite { float: right; margin: 0 0 18px 24px; border-radius: var(--radius); max-width: 45%; }
.img-gauche { float: left;  margin: 0 24px 18px 0; border-radius: var(--radius); max-width: 45%; }
.galerie { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; justify-content: center; margin: 24px 0; }
.galerie img { height: 120px; width: auto; max-width: 100%; border-radius: var(--radius); box-shadow: var(--ombre); }

/* --- Tableaux --- */
table.tbl { width: 100%; border-collapse: collapse; margin: 16px 0; }
table.tbl td, table.tbl th {
  border: 1px solid var(--gris-bord);
  padding: 10px 14px;
  text-align: left;
}
table.tbl th { background: var(--bleu-clair); color: var(--bleu-fonce); }
table.tbl tr:nth-child(even) td { background: var(--gris-fond); }

/* --- Références --- */
.ref-liste { display: grid; gap: 18px; }
.ref {
  display: flex; align-items: center; gap: 22px;
  background: var(--blanc); border: 1px solid var(--gris-bord);
  border-radius: var(--radius); padding: 18px 22px; box-shadow: var(--ombre);
}
.ref img { width: 160px; max-height: 80px; object-fit: contain; flex-shrink: 0; }
.ref p { margin: 0; color: var(--gris-doux); }

/* --- Contact --- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.contact-info p { margin: .3rem 0; }
.contact-info .gros { font-size: 1.3rem; font-weight: 600; color: var(--bleu-fonce); }
.contact-grid iframe { width: 100%; min-height: 340px; border: 0; border-radius: var(--radius); }

/* --- Pied de page --- */
.site-footer {
  background: var(--bleu-fonce);
  color: #cdddec;
  margin-top: 40px;
  padding: 32px 20px;
}
.footer-inner {
  max-width: var(--largeur);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 24px;
}
.site-footer a { color: #fff; }
.site-footer h4 { color: #fff; margin: 0 0 .6rem; font-size: 1.05rem; }
.footer-links a { display: block; padding: 3px 0; color: #cdddec; }
.footer-bas {
  max-width: var(--largeur);
  margin: 22px auto 0;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,.15);
  font-size: .85rem;
  text-align: center;
}

/* =========================================================
   Responsive — tablette & mobile
   ========================================================= */
@media (max-width: 820px) {
  body { font-size: 16px; }
  .nav-toggle { display: block; margin-left: auto; }
  .nav-inner { flex-direction: column; display: none; }
  .nav-inner.ouvert { display: flex; }
  .nav a { padding: 14px 20px; border-bottom: 1px solid rgba(255,255,255,.1); }
  .header-contact { text-align: left; }
  .contact-grid { grid-template-columns: 1fr; }
  .img-droite, .img-gauche { float: none; display: block; margin: 16px auto; max-width: 100%; }
  .hero h1 { font-size: 1.8rem; }
  .carte { padding: 22px 20px; }
  .ref { flex-direction: column; text-align: center; }
}