/* ==========================================================================
   Mathématique — la vitrine (page d'accueil publique)
   --------------------------------------------------------------------------
   Feuille séparée de celle de l'app, et c'est voulu : styles.css pèse 76 ko
   et habille des écrans que cette page ne montre jamais. Ici, un visiteur
   arrive souvent en 4G dans un couloir — tout ce qu'il télécharge doit
   servir à le convaincre.

   Les couleurs sont celles de l'app, recopiées à l'identique (un test le
   vérifie) : la page et le produit doivent se ressembler, sinon le clic
   donne l'impression d'avoir changé de site.
   ========================================================================== */

:root {
  --marine: #1B2A6B;
  --marine-fonce: #142051;
  --bleu-pastel: #CFE0F7;
  --bleu-vif: #4F5BD5;
  --gris-fond: #F4F5F7;
  --blanc: #FFFFFF;
  --gris-texte: #5B6170;
  --bordure: #E6E8EF;
  --ombre: 0 1px 2px rgba(19, 26, 56, .06), 0 4px 12px rgba(19, 26, 56, .05);
  --ombre-portee: 0 18px 40px rgba(19, 26, 56, .16);
  --largeur: 1080px;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--blanc);
  color: #11182F;
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
}

h1, h2, h3 { margin: 0; letter-spacing: -.02em; line-height: 1.15; text-wrap: balance; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img { max-width: 100%; display: block; }
a { color: inherit; }

/* Les boutons de la vitrine étaient tous des liens, jusqu'à la fenêtre
   d'entrée : son <button> héritait de la bordure du navigateur, et
   « Recevoir mon lien » s'affichait cerclé de gris foncé. */
button { font: inherit; color: inherit; border: 0; background: none; cursor: pointer; }

/* La leçon retenue de l'app : un display explicite bat l'attribut hidden,
   et un bloc censé être caché réapparaît. Ici, hidden gagne toujours. */
[hidden] { display: none !important; }

.saut {
  position: absolute; left: -9999px; top: 0;
  background: var(--marine); color: #fff; padding: 10px 16px; border-radius: 0 0 10px 0;
  z-index: 100;
}
.saut:focus { left: 0; }

/* ————— Barre du haut ————————————————————————————————————————— */
.entete {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 18px calc(10px);
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--bordure);
  padding-top: calc(10px + env(safe-area-inset-top));
}
.marque { display: flex; align-items: center; gap: 9px; text-decoration: none; }
.marque-logo svg { width: 30px; height: 30px; display: block; }
.marque-nom { font-weight: 800; font-size: 17px; color: var(--marine); letter-spacing: -.3px; }

/* ————— Boutons ——————————————————————————————————————————————— */
.bouton {
  display: inline-flex; align-items: center; justify-content: center;
  text-decoration: none; font-weight: 700; border-radius: 999px;
  padding: 14px 24px; font-size: 16px; transition: transform .12s ease, box-shadow .12s ease;
}
.bouton--principal {
  background: var(--marine); color: #fff;
  box-shadow: 0 10px 24px rgba(27, 42, 107, .28);
}
.bouton--principal:active { transform: translateY(1px); }
.bouton--fin {
  background: var(--marine); color: #fff;
  padding: 9px 16px; font-size: 14px; white-space: nowrap;
}
.bouton--large { width: 100%; max-width: 420px; padding: 17px 24px; font-size: 17px; }

/* ————— Le bandeau de celui qui revient ————————————————————————— */
.retour-band {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 18px; background: var(--bleu-pastel); color: var(--marine);
  font-size: 14px; font-weight: 600;
}

/* ————— Mise en page générale ————————————————————————————————— */
.hero, .section, .pied { padding: 0 20px; }
.hero > *, .section > *, .pied > * { max-width: var(--largeur); margin-inline: auto; }

.sur-titre {
  text-transform: uppercase; letter-spacing: .12em; font-size: 12px; font-weight: 700;
  color: var(--bleu-vif); margin-bottom: 10px;
}
.texte { color: var(--gris-texte); font-size: 16.5px; margin-top: 14px; max-width: 62ch; }
.texte--fin { font-size: 15px; }
.mention { color: var(--gris-texte); font-size: 13.5px; margin-top: 12px; }
.centre { text-align: center; }

/* ————— L'accroche ——————————————————————————————————————————— */
.hero {
  padding-top: 38px; padding-bottom: 42px; text-align: center;
  background:
    radial-gradient(120% 70% at 50% 0%, #E8F0FD 0%, rgba(232, 240, 253, 0) 70%),
    linear-gradient(180deg, #F7FAFF 0%, var(--blanc) 100%);
}
.hero h1 { font-size: 34px; font-weight: 800; letter-spacing: -.045em; }
.hero h1 em { font-style: normal; color: var(--bleu-vif); }
.hero-sous {
  margin: 16px auto 0; max-width: 46ch; color: var(--gris-texte); font-size: 17px;
}
.hero-actions { margin-top: 26px; }
.hero-actions .bouton { width: 100%; max-width: 420px; padding: 17px 24px; font-size: 17px; }

.telephone {
  margin: 30px auto 0; width: min(258px, 76%);
  background: #0D1430; padding: 8px; border-radius: 34px;
  box-shadow: var(--ombre-portee);
}
.telephone img { border-radius: 27px; width: 100%; height: auto; }
.telephone--grand { width: min(272px, 80%); }
.telephone--petit { width: min(186px, 62%); margin-top: 0; }

.atouts {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 26px;
}
.atouts li {
  border: 1px solid var(--bordure); background: var(--blanc);
  border-radius: 999px; padding: 7px 13px; font-size: 12.5px; font-weight: 600;
  color: var(--marine);
}

/* ————— Les sections ————————————————————————————————————————— */
.section { padding-top: 54px; padding-bottom: 54px; }
.section h2 { font-size: 26px; font-weight: 800; }
.section--claire { background: var(--gris-fond); }
.section--marine {
  background: linear-gradient(170deg, var(--marine) 0%, var(--marine-fonce) 100%);
  color: #fff;
}
.section--marine .sur-titre { color: var(--bleu-pastel); }
.section--marine .texte { color: #D7E2F7; }

.illustration { margin: 26px 0 0; }
.illustration img { width: 100%; height: auto; }

/* ————— Avant / après ————————————————————————————————————————— */
.duo { display: grid; gap: 14px; margin-top: 26px; }
.duo-colonne {
  background: var(--blanc); border: 1px solid var(--bordure); border-radius: 16px;
  padding: 18px; box-shadow: var(--ombre);
}
.duo-colonne h3 {
  font-size: 13px; text-transform: uppercase; letter-spacing: .1em; margin-bottom: 12px;
}
.duo-colonne--avant h3 { color: #9AA2B4; }
.duo-colonne--apres h3 { color: #2E9E5B; }
.duo-colonne li {
  position: relative; padding-left: 26px; margin-top: 10px; font-size: 15.5px;
  color: #2A3146;
}
.duo-colonne li::before {
  position: absolute; left: 0; top: -1px; font-size: 16px; font-weight: 700;
}
.duo-colonne--avant li::before { content: "·"; color: #9AA2B4; font-size: 24px; top: -6px; left: 6px; }
.duo-colonne--apres li::before { content: "✓"; color: #2E9E5B; }

/* ————— Les trois gestes ——————————————————————————————————————— */
.etapes { margin-top: 30px; display: grid; gap: 34px; }
.etape { display: grid; gap: 18px; justify-items: center; text-align: center; }
.etape .telephone { width: min(214px, 64%); }
.etape-numero {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 12px; margin-bottom: 12px;
  background: var(--marine); color: #fff; font-weight: 800; font-size: 16px;
}
.etape h3 { font-size: 20px; }
.etape p { color: var(--gris-texte); margin-top: 8px; max-width: 42ch; margin-inline: auto; }
.etapes + .centre { margin-top: 38px; }

/* ————— Les trois portes —————————————————————————————————————— */
.portes { display: grid; gap: 18px; margin-top: 28px; }
.porte {
  background: var(--blanc); border: 1px solid var(--bordure); border-radius: 18px;
  padding: 22px 18px; text-align: center; box-shadow: var(--ombre);
}
.porte .telephone { margin-inline: auto; }
.porte h3 { font-size: 18px; margin-top: 18px; }
.porte p { color: var(--gris-texte); font-size: 15px; margin-top: 8px; }

/* ————— La frise de la révision espacée ———————————————————————— */
.frise {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 28px;
  text-align: center; font-size: 12.5px; color: #B9C7E6;
}
.frise li { display: flex; flex-direction: column; align-items: center; gap: 8px; position: relative; }
.frise li + li::before {
  content: ""; position: absolute; left: -54%; top: 19px; width: 100%;
  border-top: 2px dashed rgba(207, 224, 247, .35);
}
.frise-point {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 46px; height: 38px; padding: 0 8px; border-radius: 12px;
  background: rgba(255, 255, 255, .12); border: 1px solid rgba(207, 224, 247, .35);
  color: #fff; font-weight: 800; font-size: 14px; position: relative; z-index: 1;
}

/* ————— Jouons franc jeu —————————————————————————————————————— */
.franchise { display: grid; gap: 14px; margin-top: 28px; }
.franchise li {
  background: var(--blanc); border: 1px solid var(--bordure); border-radius: 16px;
  padding: 18px; position: relative; padding-left: 52px; box-shadow: var(--ombre);
}
.franchise li::before {
  content: "✓"; position: absolute; left: 18px; top: 17px;
  width: 22px; height: 22px; border-radius: 50%; background: #E6F4EC; color: #2E9E5B;
  display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 800;
}
.franchise h3 { font-size: 16.5px; }
.franchise p { color: var(--gris-texte); font-size: 15px; margin-top: 6px; }

/* ————— Les formules ————————————————————————————————————————— */
.encart {
  margin-top: 20px; background: #FFF6E6; border: 1px solid #F0DDB8; color: #6B5320;
  border-radius: 14px; padding: 14px 16px; font-size: 14.5px;
}
.offres { display: grid; gap: 16px; margin-top: 26px; }
.offre {
  background: var(--blanc); border: 1px solid var(--bordure); border-radius: 18px;
  padding: 22px 20px; box-shadow: var(--ombre); position: relative;
}
.offre--conseille { border-color: var(--marine); border-width: 2px; box-shadow: var(--ombre-portee); }
.offre-ruban {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--marine); color: #fff; border-radius: 999px;
  padding: 5px 14px; font-size: 12px; font-weight: 700; white-space: nowrap;
}
.offre-nom { font-size: 13px; text-transform: uppercase; letter-spacing: .1em; color: var(--bleu-vif); font-weight: 700; }
.offre-prix { font-size: 34px; font-weight: 800; letter-spacing: -.04em; margin-top: 8px; }
.offre-prix span { font-size: 14px; font-weight: 600; color: var(--gris-texte); letter-spacing: 0; }
.offre-volume { margin-top: 12px; font-weight: 700; color: var(--marine); }
.offre-credits { color: var(--gris-texte); font-size: 14px; }
.offre-argument { color: var(--gris-texte); font-size: 15px; margin-top: 10px; min-height: 44px; }
.offre .bouton { width: 100%; margin-top: 16px; }
.offre--conseille .bouton { background: var(--marine); color: #fff; }
.bouton--creux {
  background: var(--blanc); color: var(--marine); border: 1.5px solid var(--marine);
  box-shadow: none;
}

/* ————— Les questions ————————————————————————————————————————— */
.questions { margin-top: 26px; display: grid; gap: 10px; }
.questions details {
  background: var(--blanc); border: 1px solid var(--bordure); border-radius: 14px;
  padding: 4px 16px;
}
.questions summary {
  cursor: pointer; font-weight: 700; padding: 14px 0; list-style: none;
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  font-size: 16px;
}
.questions summary::-webkit-details-marker { display: none; }
.questions summary::after {
  content: "+"; color: var(--bleu-vif); font-size: 22px; font-weight: 700; line-height: 1;
}
.questions details[open] summary::after { content: "–"; }
.questions details p { color: var(--gris-texte); font-size: 15.5px; padding: 0 0 16px; }

/* ————— La dernière porte ————————————————————————————————————— */
.section--final {
  text-align: center; background: var(--gris-fond);
  padding-bottom: calc(68px + env(safe-area-inset-bottom));
}
.section--final .texte { margin-inline: auto; }
.section--final .bouton { margin-top: 26px; }

/* ————— Le pied ——————————————————————————————————————————————— */
.pied {
  background: var(--marine-fonce); color: #B9C7E6; text-align: center;
  padding-top: 32px; padding-bottom: calc(100px + env(safe-area-inset-bottom));
  font-size: 14px;
}
.pied-marque { color: #fff; font-weight: 800; font-size: 17px; margin-bottom: 6px; }
.pied-liens { margin-top: 14px; }
.pied-liens a { color: var(--bleu-pastel); text-decoration: none; }

/* ————— Le rappel qui suit ———————————————————————————————————— */
.rappel {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
  background: rgba(255, 255, 255, .96);
  backdrop-filter: saturate(140%) blur(10px);
  border-top: 1px solid var(--bordure);
  animation: monte .2s ease both;
}
.rappel-texte { font-size: 14px; font-weight: 600; color: var(--marine); }
.rappel .bouton { padding: 12px 20px; font-size: 15px; }

@keyframes monte { from { transform: translateY(100%); } to { transform: none; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

/* ————— La porte d'entrée ————————————————————————————————————— */
.entree {
  position: fixed; inset: 0; z-index: 90;
  display: flex; align-items: center; justify-content: center; padding: 18px;
}
.entree-fond {
  position: absolute; inset: 0; background: rgba(11, 17, 40, .62);
  backdrop-filter: blur(3px); animation: fondu .18s ease both;
}
.entree-carte {
  position: relative; width: 100%; max-width: 420px;
  background: var(--blanc); border-radius: 22px; padding: 30px 22px 22px;
  box-shadow: 0 30px 70px rgba(10, 16, 40, .38);
  max-height: calc(100vh - 36px); overflow-y: auto;
  animation: monteCarte .22s cubic-bezier(.2, .8, .3, 1) both;
}
.entree-croix {
  position: absolute; top: 12px; right: 12px; padding: 7px; line-height: 0;
  border: 0; background: none; color: var(--gris-texte); cursor: pointer;
  border-radius: 50%;
}
.entree-croix:hover { background: var(--gris-fond); color: var(--marine); }
.entree-titre { font-size: 26px; font-weight: 800; text-align: center; }
.entree-sous {
  margin-top: 10px; text-align: center; color: var(--gris-texte); font-size: 15px;
}

.entree-google { display: flex; justify-content: center; margin-top: 22px; }
.entree-ou, .compte-ou {
  display: flex; align-items: center; gap: 12px; margin: 16px 0 0;
  color: var(--gris-texte); font-size: 12.5px; text-transform: uppercase;
  letter-spacing: .08em;
}
.entree-ou::before, .entree-ou::after,
.compte-ou::before, .compte-ou::after {
  content: ""; flex: 1; border-top: 1px solid var(--bordure);
}

.entree-form { margin-top: 18px; }
.entree-label {
  display: block; font-size: 13px; font-weight: 700; color: var(--marine);
  margin-bottom: 6px;
}
.entree-champ {
  width: 100%; padding: 14px 16px; border: 1.5px solid var(--bordure);
  border-radius: 14px; font: inherit; font-size: 16px;   /* 16px : iOS ne zoome pas */
  background: var(--gris-fond); color: inherit;
}
.entree-champ:focus { outline: none; border-color: var(--marine); background: var(--blanc); }
.entree-valider { width: 100%; margin-top: 14px; }

.entree-boite { text-align: center; margin-top: 22px; }
.entree-boite-titre { font-size: 18px; font-weight: 800; color: var(--marine); }
.entree-boite-texte { margin-top: 10px; color: var(--gris-texte); font-size: 14.5px; }
.entree-boite .bouton { margin-top: 16px; }

.entree-message {
  margin-top: 14px; padding: 10px 12px; border-radius: 12px;
  background: #FFF6E6; border: 1px solid #F0DDB8; color: #6B5320; font-size: 13.5px;
}
.entree-legal {
  margin-top: 20px; text-align: center; color: var(--gris-texte);
  font-size: 12.5px; line-height: 1.55;
}
.entree-legal a { color: var(--marine); }

/* Le fond ne défile plus derrière la fenêtre : sur un téléphone, c'est la
   différence entre une fenêtre et un bout de page qui flotte. */
.corps-bloque { overflow: hidden; }

@keyframes fondu { from { opacity: 0; } to { opacity: 1; } }
@keyframes monteCarte {
  from { opacity: 0; transform: translateY(14px) scale(.98); }
  to { opacity: 1; transform: none; }
}

/* ————— Une page de texte (confidentialité) ——————————————————— */
.doc { max-width: 680px; margin-inline: auto; padding: 36px 20px 64px; }
.doc h1 { font-size: 30px; font-weight: 800; }
.doc h2 {
  font-size: 19px; font-weight: 800; margin-top: 34px;
  padding-top: 20px; border-top: 1px solid var(--bordure);
}
.doc p { margin-top: 14px; color: #2A3146; font-size: 16px; }
.doc-chapeau {
  margin-top: 18px; padding: 16px; border-radius: 14px;
  background: var(--gris-fond); border: 1px solid var(--bordure);
}
.doc-liste { margin-top: 14px; }
.doc-liste li {
  position: relative; padding-left: 20px; margin-top: 10px; color: #2A3146;
}
.doc-liste li::before {
  content: "—"; position: absolute; left: 0; color: var(--bleu-vif);
}
.doc-encart {
  background: #FFF6E6; border: 1px solid #F0DDB8; color: #6B5320;
  border-radius: 14px; padding: 14px 16px; font-size: 15px;
}
.doc-date { color: var(--gris-texte); font-size: 13.5px; margin-top: 30px; }
.doc-retour { margin-top: 8px; }
.doc a { color: var(--marine); }

/* ————— Écrans larges ————————————————————————————————————————— */
@media (min-width: 760px) {
  .hero { padding-top: 64px; padding-bottom: 72px; }
  .hero h1 { font-size: 54px; }
  .hero-sous { font-size: 19px; }
  .section { padding-top: 84px; padding-bottom: 84px; }
  .section h2 { font-size: 34px; }
  .texte { font-size: 17.5px; }

  .duo { grid-template-columns: 1fr 1fr; gap: 20px; }
  .portes { grid-template-columns: repeat(3, 1fr); gap: 22px; }
  .franchise { grid-template-columns: 1fr 1fr; gap: 18px; }
  .offres { grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: start; }
  .questions { grid-template-columns: 1fr 1fr; align-content: start; }

  .etapes { gap: 56px; }
  .etape {
    grid-template-columns: 1fr 1fr; align-items: center; text-align: left;
    justify-items: start; gap: 40px;
  }
  .etape p { margin-inline: 0; }
  .etape:nth-child(even) .etape-texte { order: 2; }
  .etape .telephone { margin-top: 0; width: min(230px, 100%); justify-self: center; }
  .section--marine .frise { max-width: 640px; margin-inline: auto; }

  /* Le rappel n'a de sens que sur un écran de téléphone : sur un ordinateur
     la barre du haut reste visible, et deux rappels valent un harcèlement. */
  .rappel { display: none !important; }
}