/* Page de vente SAV BuyLive — clair par défaut, sombre si le système le demande */
:root {
  --fond: #ffffff;
  --fond-alt: #f6f5fb;
  --texte: #16142b;
  --doux: #5d5a78;
  --bord: #e7e4f2;
  --carte: #ffffff;
  --rose: #e5007e;
  --violet: #7b3cff;
  --bleu: #2563eb;
  --degrade: linear-gradient(120deg, var(--rose), var(--violet) 55%, var(--bleu));
  --ombre: 0 18px 50px rgba(40, 20, 90, .12);
  --rayon: 16px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fond: #0e0d1a;
    --fond-alt: #15132a;
    --texte: #f1eff9;
    --doux: #a9a5c4;
    --bord: #2a2745;
    --carte: #1a1831;
    --ombre: 0 18px 50px rgba(0, 0, 0, .45);
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: Inter, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif; background: var(--fond); color: var(--texte); line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { display: block; }
.conteneur { max-width: 1140px; margin: 0 auto; padding: 0 20px; }
.conteneur.etroit { max-width: 780px; }

/* Barre du haut */
.barre { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--fond) 85%, transparent); backdrop-filter: blur(12px); border-bottom: 1px solid var(--bord); }
.barre-interieur { display: flex; align-items: center; gap: 24px; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 18px; }
.logo img { border-radius: 8px; }
.liens { display: flex; gap: 22px; margin-left: auto; font-size: 14px; color: var(--doux); }
.liens a:hover { color: var(--texte); }
.actions-barre { display: flex; align-items: center; gap: 14px; }
.lien-connexion { font-size: 14px; font-weight: 600; cursor: pointer; }

/* Boutons */
.bouton { display: inline-flex; align-items: center; justify-content: center; padding: 13px 22px; border-radius: 12px; font-weight: 700; font-size: 15px; background: var(--degrade); color: #fff; box-shadow: 0 8px 22px rgba(123, 60, 255, .28); transition: transform .15s ease, box-shadow .15s ease; cursor: pointer; }
.bouton:hover { transform: translateY(-1px); box-shadow: 0 12px 28px rgba(123, 60, 255, .35); }
.bouton.petit { padding: 9px 16px; font-size: 14px; }
.bouton.secondaire { background: var(--carte); color: var(--texte); border: 1px solid var(--bord); box-shadow: none; }
.bouton.clair { background: #fff; color: #2a1560; box-shadow: none; }
.bouton.mini { padding: 6px 12px; font-size: 12px; border-radius: 8px; box-shadow: none; }

/* Accroche */
.accroche { padding: 72px 0 80px; background: radial-gradient(900px 420px at 85% 10%, rgba(123, 60, 255, .14), transparent 60%), radial-gradient(700px 360px at 0% 90%, rgba(229, 0, 126, .10), transparent 60%); }
.accroche-grille { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
.sur-titre { display: inline-block; margin: 0 0 14px; padding: 5px 12px; border-radius: 99px; background: var(--fond-alt); border: 1px solid var(--bord); font-size: 13px; font-weight: 600; color: var(--doux); }
h1 { font-size: clamp(34px, 5vw, 54px); line-height: 1.08; letter-spacing: -.03em; margin: 0 0 18px; font-weight: 800; }
.degrade { background: var(--degrade); -webkit-background-clip: text; background-clip: text; color: transparent; }
.chapeau { font-size: 18px; color: var(--doux); margin: 0 0 28px; max-width: 540px; }
.appels { display: flex; flex-wrap: wrap; gap: 12px; }
.rassurance { font-size: 13px; color: var(--doux); margin-top: 16px; }

/* Aperçu de l'application (illustration) */
.fenetre-app { background: var(--carte); border: 1px solid var(--bord); border-radius: 18px; box-shadow: var(--ombre); overflow: hidden; }
.fenetre-titre { display: flex; align-items: center; gap: 6px; padding: 10px 14px; border-bottom: 1px solid var(--bord); font-size: 12px; color: var(--doux); }
.fenetre-titre i { width: 10px; height: 10px; border-radius: 50%; background: var(--bord); }
.fenetre-titre span { margin-left: 8px; font-weight: 600; }
.app-corps { display: grid; grid-template-columns: 0.9fr 1.3fr; min-height: 300px; }
.app-liste { border-right: 1px solid var(--bord); padding: 8px; }
.app-mail { display: grid; grid-template-columns: 1fr auto; gap: 2px 8px; padding: 10px; border-radius: 10px; font-size: 12px; }
.app-mail.actif { background: var(--fond-alt); }
.app-mail b { font-size: 13px; }
.app-mail span { grid-column: 1; color: var(--doux); }
.app-mail em { grid-row: 1 / span 2; grid-column: 2; align-self: center; }
.etiquette { font-style: normal; font-size: 10px; font-weight: 700; padding: 3px 7px; border-radius: 6px; background: #e6f0ff; color: #1d4ed8; }
.etiquette.rouge { background: #ffe4ef; color: #c2005f; }
.etiquette.orange { background: #fff1dc; color: #b45309; }
.app-fiche { padding: 14px; display: flex; flex-direction: column; gap: 10px; }
.app-infos { display: flex; flex-wrap: wrap; gap: 6px; }
.puce { font-size: 11px; font-weight: 600; padding: 4px 8px; border-radius: 99px; background: var(--fond-alt); border: 1px solid var(--bord); }
.puce.orange { background: #fff1dc; color: #b45309; border-color: #fde0b3; }
.app-reponse { font-size: 12.5px; background: var(--fond-alt); border-radius: 12px; padding: 10px 12px; border: 1px solid var(--bord); }
.app-reponse p { margin: 0 0 6px; }
.app-boutons { display: flex; align-items: center; gap: 8px; }
.confiance { margin-left: auto; font-size: 11px; font-weight: 700; color: #15803d; }

/* Sections */
.section { padding: 84px 0; }
.section.alt { background: var(--fond-alt); }
h2 { font-size: clamp(28px, 3.6vw, 38px); letter-spacing: -.02em; margin: 0 0 10px; text-align: center; line-height: 1.15; }
.intro { text-align: center; color: var(--doux); margin: 0 auto 44px; max-width: 620px; font-size: 17px; }
h3 { margin: 0 0 8px; font-size: 18px; }

.etapes { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.etapes li { background: var(--carte); border: 1px solid var(--bord); border-radius: var(--rayon); padding: 26px; }
.etapes p { margin: 0; color: var(--doux); }
.numero { display: inline-grid; place-items: center; width: 36px; height: 36px; border-radius: 10px; background: var(--degrade); color: #fff; font-weight: 800; margin-bottom: 14px; }

.grille-fonctions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grille-fonctions article { background: var(--carte); border: 1px solid var(--bord); border-radius: var(--rayon); padding: 24px; }
.grille-fonctions p { margin: 0; color: var(--doux); font-size: 15px; }
.picto { font-size: 26px; margin-bottom: 10px; }

.grille-tarifs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
.tarif { position: relative; display: flex; flex-direction: column; background: var(--carte); border: 1px solid var(--bord); border-radius: 20px; padding: 28px; }
.tarif.vedette { border: 2px solid transparent; background: linear-gradient(var(--carte), var(--carte)) padding-box, var(--degrade) border-box; box-shadow: var(--ombre); }
.badge-vedette { position: absolute; top: -13px; left: 50%; transform: translateX(-50%); margin: 0; padding: 4px 12px; border-radius: 99px; background: var(--degrade); color: #fff; font-size: 12px; font-weight: 700; white-space: nowrap; }
.prix { font-size: 40px; font-weight: 800; margin: 6px 0 2px; letter-spacing: -.02em; }
.prix span { font-size: 14px; font-weight: 500; color: var(--doux); }
.quota { margin: 0 0 16px; font-weight: 600; color: var(--violet); }
.tarif ul { list-style: none; padding: 0; margin: 0 0 24px; flex: 1; }
.tarif li { padding: 6px 0 6px 24px; position: relative; font-size: 15px; }
.tarif li::before { content: '✓'; position: absolute; left: 0; color: var(--violet); font-weight: 800; }
.tarif li em { color: var(--doux); font-style: normal; font-size: 13px; }
.note { text-align: center; color: var(--doux); font-size: 14px; margin: 28px auto 0; max-width: 720px; }

details { background: var(--carte); border: 1px solid var(--bord); border-radius: 14px; padding: 16px 20px; margin-bottom: 12px; }
summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: '+'; font-size: 20px; line-height: 1; color: var(--violet); }
details[open] summary::after { content: '–'; }
details p { margin: 12px 0 0; color: var(--doux); }

.final { padding: 80px 0; text-align: center; background: var(--degrade); color: #fff; }
.final h2 { color: #fff; }
.final p { opacity: .9; margin: 0 0 26px; font-size: 17px; }

.pied { padding: 36px 0; border-top: 1px solid var(--bord); font-size: 14px; color: var(--doux); }
.pied-grille { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }
.pied p { margin: 8px 0 0; }
.pied nav { display: flex; gap: 20px; flex-wrap: wrap; }
.pied nav a:hover { color: var(--texte); }

/* Pages légales */
.legal { padding: 56px 0 80px; }
.legal h1 { font-size: 34px; }
.legal h2 { text-align: left; font-size: 22px; margin-top: 32px; }
.legal p, .legal li { color: var(--doux); }
.a-completer { background: #fff1dc; color: #92400e; padding: 1px 6px; border-radius: 4px; font-weight: 600; }

/* Téléphone et tablette */
@media (max-width: 960px) {
  .accroche-grille { grid-template-columns: 1fr; }
  .etapes, .grille-fonctions, .grille-tarifs { grid-template-columns: 1fr; }
  .liens { display: none; }
  .actions-barre { margin-left: auto; }
  .tarif.vedette { order: -1; }
}
@media (max-width: 520px) {
  .accroche { padding: 44px 0 56px; }
  .app-corps { grid-template-columns: 1fr; }
  .app-liste { display: none; }
  .lien-connexion { display: none; }
  .section { padding: 60px 0; }
}