:root {
  --fond: #f4f6fa; --carte: #ffffff; --encre: #111827; --gris: #5b6472; --ligne: #e3e7ee;
  --marque: #0d3153; --marque-texte: #ffffff; --accent: #6c4dff; --entete: #ffffff; --entete-texte: #0d3153;
  --rayon: 18px;
}
html[data-theme="volkswagen"] {
  --fond: #e9eef5; --marque: #001e50; --accent: #00b0f0; --entete: #001e50; --entete-texte: #ffffff;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--fond); color: var(--encre);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.entete {
  background: var(--entete); color: var(--entete-texte);
  padding: 28px 16px 112px; text-align: center;
}
.entete img { display: block; margin: 0 auto; }
.entete .vw { width: 92px; height: 92px; }
.entete .nexaly { width: 200px; height: auto; }
.entete p { margin: 14px 0 0; font-size: 13px; letter-spacing: .04em; text-transform: uppercase; opacity: .85; }
main { max-width: 480px; margin: -56px auto 40px; padding: 0 16px; }
.carte {
  background: var(--carte); border-radius: var(--rayon); padding: 24px 20px;
  box-shadow: 0 10px 30px rgba(17, 24, 39, .08); margin-bottom: 16px;
}
.identite { text-align: center; }
.avatar {
  width: 84px; height: 84px; border-radius: 50%; margin: -66px auto 12px;
  background: var(--marque); border: 4px solid var(--carte); display: block; object-fit: cover;
  box-shadow: 0 6px 18px rgba(17, 24, 39, .18);
}
h1 { font-size: 26px; margin: 0; line-height: 1.2; }
.titre { margin: 6px 0 0; font-weight: 600; color: var(--marque); }
.societe { margin: 2px 0 0; color: var(--gris); font-size: 15px; }
.bouton {
  display: flex; align-items: center; justify-content: center; gap: 10px; width: 100%;
  margin-top: 20px; padding: 15px 18px; border-radius: 14px; border: 0; cursor: pointer;
  background: var(--marque); color: var(--marque-texte); font: inherit; font-weight: 700; font-size: 17px;
  text-decoration: none;
}
.bouton:active { transform: scale(.985); }
.bouton.second { background: transparent; color: var(--marque); border: 2px solid var(--marque); margin-top: 10px; }
.actions { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 18px; }
.actions a {
  display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 12px 4px;
  border-radius: 14px; background: var(--fond); text-decoration: none; font-size: 12px; font-weight: 600; color: var(--encre);
}
.actions svg, .bouton svg, .liens svg { width: 22px; height: 22px; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.actions svg { color: var(--marque); }
.liens { list-style: none; margin: 18px 0 0; padding: 0; border-top: 1px solid var(--ligne); text-align: left; }
.liens li { border-bottom: 1px solid var(--ligne); }
.liens li:last-child { border-bottom: 0; }
.liens a { display: flex; align-items: center; gap: 12px; padding: 13px 2px; text-decoration: none; }
.liens svg { color: var(--marque); flex: none; }
.liens span { display: block; }
.liens small { display: block; color: var(--gris); font-size: 13px; }
h2 { font-size: 19px; margin: 0 0 4px; }
.sous { margin: 0 0 16px; color: var(--gris); font-size: 14px; }
.champ { margin-bottom: 12px; }
.champ label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 4px; color: var(--gris); }
.champ input, .champ select, .champ textarea {
  width: 100%; padding: 12px 14px; border: 1.5px solid var(--ligne); border-radius: 12px;
  font: inherit; background: var(--carte); color: var(--encre);
}
.champ input:focus, .champ select:focus, .champ textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent); }
.champ textarea { min-height: 84px; resize: none; }
.deux { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.consentement { display: flex; gap: 10px; align-items: flex-start; font-size: 13px; color: var(--gris); margin: 4px 0 6px; }
.consentement input { margin-top: 3px; flex: none; width: 18px; height: 18px; }
.piege { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.erreur { color: #b91c1c; font-size: 14px; margin: 8px 0 0; min-height: 1.2em; }
.merci { display: none; text-align: center; padding: 12px 0 4px; }
.merci .coche { width: 56px; height: 56px; border-radius: 50%; background: #16a34a; color: #fff; display: grid; place-items: center; margin: 0 auto 12px; font-size: 28px; }
form.envoye { display: none; }
form.envoye + .merci { display: block; }
.pied { text-align: center; color: var(--gris); font-size: 12px; margin-top: 20px; }
.pied a { color: var(--gris); }
@media (min-width: 560px) { .entete { padding-top: 40px; } }

/* ---- Page d'accueil : choix de la carte ---- */
body.accueil { min-height: 100vh; min-height: 100dvh; display: flex; align-items: center; background: linear-gradient(160deg, #e9eef5, #f7f7f3 60%); }
.choix { margin: 0 auto; padding: 32px 16px; max-width: 900px; width: 100%; text-align: center; }
.choix header { margin-bottom: 24px; }
.avatar.grand { margin: 0 auto 12px; width: 112px; height: 112px; border-color: #fff; box-shadow: 0 8px 24px rgba(17,24,39,.12); }
.choix h1 { font-size: 30px; }
.choix .sous { font-size: 15px; margin: 6px 0 0; }
.tuiles { display: grid; grid-template-columns: 1fr; gap: 16px; }
.tuile {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 18px;
  min-height: 230px; padding: 28px 20px; border-radius: 22px; text-decoration: none;
  box-shadow: 0 12px 32px rgba(17, 24, 39, .10); transition: transform .15s ease, box-shadow .15s ease;
}
.tuile:hover, .tuile:focus-visible { transform: translateY(-3px); box-shadow: 0 18px 40px rgba(17, 24, 39, .16); outline: none; }
.tuile:active { transform: scale(.985); }
.tuile img { display: block; height: auto; }
.tuile.vw { background: #001e50; color: #fff; }
.tuile.vw img { width: 110px; }
.tuile.nx { background: #fff; color: #0d3153; border: 2px solid #dfe5ef; }
.tuile.nx img { width: 210px; }
.tuile span { font-size: 22px; font-weight: 700; line-height: 1.2; }
.tuile small { display: block; font-size: 14px; font-weight: 500; opacity: .8; margin-top: 4px; }
@media (min-width: 640px) {
  .tuiles { grid-template-columns: 1fr 1fr; gap: 24px; }
  .tuile { min-height: 300px; }
}

/* ---- Cartes : mise en page ordinateur / tablette ---- */
@media (min-width: 820px) {
  .entete { padding: 40px 16px 132px; }
  .entete .vw { width: 110px; height: 110px; }
  .entete .nexaly { width: 240px; }
  .entete p { font-size: 14px; }
  main:not(.choix) { max-width: 980px; display: grid; grid-template-columns: 1fr 1fr; column-gap: 24px; align-items: start; margin-top: -72px; }
  .carte { padding: 32px 28px; margin-bottom: 20px; }
  .carte.identite { grid-column: 1; }
  .carte:not(.identite) { grid-column: 2; grid-row: 1 / span 3; }
  #partager { grid-column: 1; margin-top: 0; }
  .pied { grid-column: 1; }
  .avatar { margin-top: -74px; width: 96px; height: 96px; }
  h1 { font-size: 30px; }
  .actions a { font-size: 13px; padding: 14px 4px; }
}