/* Arthurimmo.com Brest — programme de parrainage
   Charte officielle : anthracite #2D363D, orange #F29400, blanc, Manrope.
   Mise en page : bandeaux pleine largeur, colonne de lecture 1120px, mobile d'abord. */
:root {
  --ink: #2D363D;          /* anthracite officiel */
  --ink-deep: #232A30;     /* anthracite foncé pour le pied de page */
  --orange: #F29400;       /* orange officiel (fonds, boutons, accents) */
  --orange-text: #A86400;  /* orange lisible sur fond blanc */
  --paper: #FFFFFF;
  --mist: #F2F4F5;         /* gris froid teinté anthracite */
  --line: #D9DEE1;
  --muted: #5A656D;
  --on-ink: #FFFFFF;
  --on-ink-muted: #C3CACF;
  --ok: #1E7A46;
  --error: #B42318;
  --font: "Manrope", "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  --radius: 10px;
  --wrap: 1120px;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--font); font-size: 16px; line-height: 1.6;
  font-feature-settings: "tnum" 0;
}
img { max-width: 100%; height: auto; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--orange); outline-offset: 2px; border-radius: 4px; }
[hidden] { display: none !important; }

.wrap {
  max-width: var(--wrap); margin: 0 auto;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}
.band { padding-block: 72px; }
.band--mist { background: var(--mist); }
.band--ink { background: var(--ink); color: var(--on-ink); }
@media (max-width: 700px) { .band { padding-block: 52px; } }

h1, h2, h3 { line-height: 1.15; text-wrap: balance; margin: 0; letter-spacing: -0.015em; }
h1 { font-size: clamp(2rem, 1.3rem + 3vw, 3.25rem); font-weight: 800; }
h2 { font-size: clamp(1.55rem, 1.2rem + 1.5vw, 2.25rem); font-weight: 800; }
h3 { font-size: 1.12rem; font-weight: 700; }
p { margin: 0; }
.lead { font-size: 1.12rem; color: var(--muted); max-width: 62ch; }
.band--ink .lead { color: var(--on-ink-muted); }
.eyebrow {
  display: inline-block; font-size: .78rem; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; color: var(--orange-text);
}
.band--ink .eyebrow { color: var(--orange); }
.section-head { display: grid; gap: 14px; margin-bottom: 40px; max-width: 760px; }

/* En-tête */
.topbar {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20;
  background: var(--paper); border-bottom: 1px solid var(--line);
}
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; min-width: 0; }
.brand img { height: 34px; width: auto; display: block; }
.brand__fallback { font-weight: 800; font-size: 1.15rem; letter-spacing: -0.01em; }
.brand__fallback b { color: var(--orange-text); font-weight: 800; }
.brand__city {
  font-size: .78rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--muted); border-left: 1px solid var(--line); padding-left: 12px; white-space: nowrap;
}
@media (max-width: 520px) { .brand__city { display: none; } .topbar .btn { padding: 10px 14px; font-size: .9rem; } }

/* Boutons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: inherit; font-weight: 700; font-size: 1rem; line-height: 1.2;
  padding: 14px 22px; border-radius: 8px; border: 2px solid transparent;
  text-decoration: none; cursor: pointer; transition: transform .15s ease, background-color .15s ease;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--orange); color: var(--ink); }
.btn--primary:hover { background: #FFA514; }
.btn--ghost { background: transparent; color: inherit; border-color: currentColor; }
.btn--dark { background: var(--ink); color: var(--on-ink); }
.btn--dark:hover { background: var(--ink-deep); }
.btn[disabled] { opacity: .6; cursor: progress; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* Hero */
.hero { background: var(--ink); color: var(--on-ink); padding-block: 64px 72px; }
.hero__grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 56px; align-items: center; }
.hero__copy { display: grid; gap: 22px; min-width: 0; }
.hero h1 em { font-style: normal; color: var(--orange); }
@media (max-width: 900px) { .hero__grid { grid-template-columns: minmax(0, 1fr); gap: 40px; } }

.facts { display: flex; flex-wrap: wrap; gap: 10px 22px; margin: 6px 0 0; padding: 0; list-style: none; }
.facts li { display: flex; align-items: center; gap: 8px; font-size: .92rem; font-weight: 600; color: var(--on-ink-muted); }
.facts li::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--orange); flex: none; }

/* Barème — le "bon de parrainage" */
.bareme {
  background: var(--paper); color: var(--ink); border-radius: var(--radius);
  padding: 26px 26px 20px; box-shadow: 0 18px 40px rgba(0,0,0,.28); position: relative;
}
.bareme::before {
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 6px;
  background: var(--orange); border-radius: var(--radius) var(--radius) 0 0;
}
.bareme__head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-bottom: 14px; }
.bareme__title { font-weight: 800; font-size: 1rem; }
.bareme__ref { font-size: .72rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.bareme dl { margin: 0; display: grid; gap: 2px; }
.bareme__row { display: flex; align-items: baseline; gap: 10px; padding: 9px 0; }
.bareme__row dt { font-weight: 600; white-space: nowrap; }
.bareme__row dd { margin: 0; font-weight: 800; font-size: 1.2rem; font-variant-numeric: tabular-nums; white-space: nowrap; }
.bareme__row .leader { flex: 1; border-bottom: 2px dotted var(--line); transform: translateY(-4px); min-width: 20px; }
.bareme__group { font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--orange-text); margin-top: 10px; }
.bareme__foot { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line); font-size: .82rem; color: var(--muted); }

/* Étapes */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; list-style: none; padding: 0; margin: 0; counter-reset: step; }
.step { display: grid; gap: 10px; align-content: start; padding-top: 18px; border-top: 3px solid var(--ink); counter-increment: step; }
.step::before { content: "Étape " counter(step); font-size: .78rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--orange-text); }
.step p { color: var(--muted); font-size: .97rem; }
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .steps { grid-template-columns: minmax(0, 1fr); } }
.note-line { margin-top: 32px; padding: 16px 18px; background: var(--paper); border-left: 4px solid var(--orange); border-radius: 0 8px 8px 0; font-size: .97rem; }

/* Deux colonnes argumentaires */
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 48px; }
@media (max-width: 800px) { .split { grid-template-columns: minmax(0, 1fr); gap: 32px; } }
.ticks { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.ticks li { display: grid; grid-template-columns: 22px minmax(0, 1fr); gap: 12px; }
.ticks li::before { content: ""; width: 14px; height: 8px; margin-top: 7px; border-left: 3px solid var(--orange); border-bottom: 3px solid var(--orange); transform: rotate(-45deg); }
.ticks strong { display: block; }
.ticks span { color: var(--muted); font-size: .97rem; }
.band--ink .ticks span { color: var(--on-ink-muted); }

/* Formulaire */
.form-shell { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 48px; align-items: start; }
@media (max-width: 900px) { .form-shell { grid-template-columns: minmax(0, 1fr); gap: 28px; } }
.form-aside { display: grid; gap: 18px; position: sticky; top: 96px; }
@media (max-width: 900px) { .form-aside { position: static; } }
.card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
@media (max-width: 520px) { .card { padding: 20px; } }

.progress { display: flex; gap: 8px; margin-bottom: 22px; }
.progress span { flex: 1; height: 5px; border-radius: 3px; background: var(--line); }
.progress span.is-on { background: var(--orange); }
.step-label { font-size: .78rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
legend { padding: 0; font-weight: 800; font-size: 1.25rem; margin-bottom: 18px; }
.fields { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; }
.fields .full { grid-column: 1 / -1; }
@media (max-width: 560px) { .fields { grid-template-columns: minmax(0, 1fr); } }
.field { display: grid; gap: 6px; min-width: 0; }
.field label, .field .label { font-weight: 600; font-size: .92rem; }
.field .hint { font-size: .82rem; color: var(--muted); }
.req { color: var(--orange-text); }
input[type="text"], input[type="email"], input[type="tel"], select, textarea {
  width: 100%; font: inherit; font-size: 1rem; color: var(--ink); background: var(--paper);
  border: 1.5px solid #B9C1C7; border-radius: 8px; padding: 12px 14px; min-height: 48px;
}
textarea { min-height: 96px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--ink); box-shadow: 0 0 0 3px rgba(242,148,0,.35); }
.is-invalid input, .is-invalid select, .is-invalid textarea { border-color: var(--error); }
.error-msg { color: var(--error); font-size: .84rem; font-weight: 600; }

.choice-row { display: flex; flex-wrap: wrap; gap: 10px; }
.chip { position: relative; }
.chip input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.chip span {
  display: inline-flex; align-items: center; min-height: 46px; padding: 10px 16px;
  border: 1.5px solid #B9C1C7; border-radius: 8px; font-weight: 600; cursor: pointer; background: var(--paper);
}
.chip input:checked + span { border-color: var(--ink); background: var(--ink); color: var(--on-ink); }
.chip input:focus-visible + span { outline: 3px solid var(--orange); outline-offset: 2px; }

.checks { display: grid; gap: 14px; }
.check { display: grid; grid-template-columns: 22px minmax(0, 1fr); gap: 12px; align-items: start; font-size: .93rem; }
.check input { width: 20px; height: 20px; margin: 2px 0 0; accent-color: var(--ink); }
.check a { font-weight: 700; }

.prime-preview {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  background: var(--mist); border-radius: 8px; padding: 14px 16px; margin-top: 4px;
}
.prime-preview strong { font-size: 1.5rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.prime-preview span { font-size: .85rem; color: var(--muted); }

.form-nav { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-top: 26px; flex-wrap: wrap; }
.linkish { background: none; border: 0; padding: 8px 0; font: inherit; font-weight: 600; color: var(--muted); cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.legal-small { font-size: .78rem; color: var(--muted); margin-top: 18px; }
.hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }
.alert { padding: 14px 16px; border-radius: 8px; font-size: .93rem; font-weight: 600; }
.alert--error { background: #FDECEA; color: var(--error); }

/* Écran de partage */
.share { display: grid; gap: 20px; }
.share__badge { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; color: var(--ok); }
.share__badge::before { content: ""; width: 10px; height: 10px; border-radius: 50%; background: var(--ok); }
.share textarea { min-height: 150px; font-size: .95rem; }
.share__link { display: flex; gap: 8px; flex-wrap: wrap; }
.share__link input { flex: 1 1 220px; font-size: .88rem; background: var(--mist); }
.share__buttons { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
@media (max-width: 520px) { .share__buttons { grid-template-columns: minmax(0, 1fr); } }
.tone { display: inline-flex; border: 1.5px solid var(--line); border-radius: 8px; overflow: hidden; }
.tone button { font: inherit; font-weight: 600; font-size: .88rem; border: 0; background: var(--paper); padding: 8px 14px; cursor: pointer; color: var(--muted); }
.tone button[aria-pressed="true"] { background: var(--ink); color: var(--on-ink); }

/* FAQ */
.faq { display: grid; gap: 0; max-width: 860px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer; padding: 20px 40px 20px 0; font-weight: 700; font-size: 1.05rem; position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 6px; top: 16px; font-size: 1.5rem; font-weight: 600; color: var(--orange-text); }
.faq details[open] summary::after { content: "–"; }
.faq .answer { padding: 0 0 20px; color: var(--muted); display: grid; gap: 10px; max-width: 70ch; }

/* Pied de page */
.footer { background: var(--ink-deep); color: var(--on-ink-muted); padding-block: 48px; font-size: .88rem; }
.footer__grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr) minmax(0, 1fr); gap: 32px; }
@media (max-width: 760px) { .footer__grid { grid-template-columns: minmax(0, 1fr); } }
.footer h3 { color: var(--on-ink); font-size: .95rem; margin-bottom: 10px; }
.footer a { color: var(--on-ink); }
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
.footer__legal { margin-top: 32px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.12); font-size: .78rem; line-height: 1.6; }

/* Pages de texte (règlement, confidentialité) */
.doc { max-width: 760px; }
.doc h2 { font-size: 1.3rem; margin: 36px 0 12px; }
.doc p, .doc li { color: #3C464D; }
.doc p + p { margin-top: 12px; }
.doc ul, .doc ol { padding-left: 1.2em; display: grid; gap: 6px; margin: 10px 0; }
.doc table { border-collapse: collapse; width: 100%; margin: 12px 0; font-size: .95rem; }
.doc th, .doc td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.doc th { font-weight: 700; background: var(--mist); }
.doc td.num { text-align: right; font-variant-numeric: tabular-nums; font-weight: 700; white-space: nowrap; }
.table-scroll { overflow-x: auto; }
.doc-meta { font-size: .88rem; color: var(--muted); margin-top: 10px; }