/* ==========================================================================
   Pages d'offre — feuille partagée.
   Volontairement légère : ces pages sont des points d'entrée depuis Google,
   elles doivent s'afficher vite. Pas de framework, pas de JavaScript.
   ========================================================================== */

:root {
  --bg:       #0A0A0B;
  --surface:  #121216;
  --line:     #26262E;
  --hi:       #FAFAFC;
  --mid:      #C4C5CB;
  --lo:       #8E9098;
  --accent:   #9EB4FF;
  --accent-d: #5E7ED8;
  --indigo:   #253A91;
  --on-acc:   #0A0A0B;
}

/* Le site principal mémorise le thème choisi ; ces pages suivent la
   préférence système, et l'attribut data-theme si l'utilisateur l'a fixé. */
@media (prefers-color-scheme: light) {
  :root {
    --bg:      #F6F5EE;
    --surface: #FFFFFF;
    --line:    #DFDDD2;
    --hi:      #0E0E12;
    --mid:     #44444C;
    --lo:      #6C6C75;
    --accent:  #253A91;
    --accent-d:#1A2970;
    --on-acc:  #FFFFFF;
  }
}
:root[data-theme="dark"] {
  --bg: #0A0A0B; --surface: #121216; --line: #26262E;
  --hi: #FAFAFC; --mid: #C4C5CB; --lo: #8E9098;
  --accent: #9EB4FF; --accent-d: #5E7ED8; --on-acc: #0A0A0B;
}
:root[data-theme="light"] {
  --bg: #F6F5EE; --surface: #FFFFFF; --line: #DFDDD2;
  --hi: #0E0E12; --mid: #44444C; --lo: #6C6C75;
  --accent: #253A91; --accent-d: #1A2970; --on-acc: #FFFFFF;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--hi);
  font-family: 'Space Grotesk', system-ui, -apple-system, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ---------- ossature ---------- */
.wrap { width: 100%; max-width: 780px; margin: 0 auto; padding: 0 24px; }
main > section { padding: 56px 0; border-bottom: 1px solid var(--line); }
main > section:last-of-type { border-bottom: 0; }

/* ---------- barre du haut ---------- */
.topbar {
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
}
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 62px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--hi); }
.brand svg { width: 17px; height: auto; }
.brand span {
  font-family: 'Instrument Serif', Georgia, serif;
  font-style: italic; font-size: 21px; letter-spacing: 0.01em;
}
.topbar nav { display: flex; gap: 22px; }
.topbar nav a {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--lo); text-decoration: none; transition: color 0.2s;
}
.topbar nav a:hover { color: var(--accent); }

/* ---------- fil d'ariane ---------- */
.breadcrumb {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 10.5px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--lo); padding: 26px 0 0;
}
.breadcrumb a { color: var(--lo); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { margin: 0 7px; opacity: 0.5; }

/* ---------- titres ---------- */
.eyebrow {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 11px; letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 18px;
}
h1 {
  font-family: 'Instrument Serif', Georgia, serif;
  font-weight: 400; font-style: normal;
  font-size: clamp(2.4rem, 5.6vw, 3.9rem);
  line-height: 1.06; letter-spacing: -0.02em;
  margin: 0 0 22px; text-wrap: balance;
}
h1 em { font-style: italic; color: var(--accent); }
h2 {
  font-family: 'Instrument Serif', Georgia, serif;
  font-weight: 400;
  font-size: clamp(1.55rem, 3vw, 2.1rem);
  line-height: 1.2; letter-spacing: -0.01em;
  margin: 0 0 18px; text-wrap: balance;
}
h2 em { font-style: italic; color: var(--accent); }
h3 { font-size: 1.02rem; font-weight: 600; margin: 0 0 6px; }
p { margin: 0 0 18px; color: var(--mid); }
p.lead { font-size: 1.14rem; color: var(--mid); max-width: 62ch; }
strong { color: var(--hi); font-weight: 600; }
a { color: var(--accent); }

/* ---------- carte tarif ---------- */
.price-card {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  padding: 30px 30px 26px;
  display: flex; flex-wrap: wrap; align-items: flex-end;
  justify-content: space-between; gap: 22px;
  margin: 6px 0 30px;
}
.price-amount {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: clamp(2.6rem, 6vw, 3.6rem); line-height: 1;
  letter-spacing: -0.02em;
}
.price-amount small {
  display: block;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 10.5px; letter-spacing: 0.26em; text-transform: uppercase;
  color: var(--lo); margin-bottom: 8px;
}
.price-meta {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--lo); text-align: right; line-height: 1.9;
}

/* ---------- listes de livrables ---------- */
ul.check { list-style: none; margin: 0 0 22px; padding: 0; display: grid; gap: 11px; }
ul.check li { position: relative; padding-left: 28px; color: var(--mid); }
ul.check li::before {
  content: ""; position: absolute; left: 4px; top: 0.62em;
  width: 9px; height: 5px;
  border-left: 1.8px solid var(--accent);
  border-bottom: 1.8px solid var(--accent);
  transform: rotate(-45deg);
}

/* ---------- grille « pour qui » ---------- */
.cards { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.card {
  border: 1px solid var(--line); border-radius: 14px;
  background: var(--surface); padding: 20px 20px 18px;
}
.card p { font-size: 0.92rem; margin: 0; color: var(--lo); }

/* ---------- questions ---------- */
details {
  border-bottom: 1px solid var(--line);
  padding: 16px 0;
}
details summary {
  cursor: pointer; list-style: none; font-weight: 500;
  display: flex; justify-content: space-between; gap: 18px; align-items: baseline;
}
details summary::-webkit-details-marker { display: none; }
details summary::after { content: "+"; color: var(--accent); font-size: 1.3rem; line-height: 1; }
details[open] summary::after { content: "–"; }
details p { margin: 12px 0 0; font-size: 0.96rem; }

/* ---------- appel à l'action ---------- */
.cta {
  border: 1px solid var(--line); border-radius: 18px;
  background: var(--surface); padding: 34px 30px;
  text-align: center; margin-top: 8px;
}
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 15px; font-weight: 500; text-decoration: none;
  padding: 14px 28px; border-radius: 999px;
  color: var(--on-acc);
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-d) 100%);
  transition: filter 0.2s, transform 0.2s;
}
.btn:hover { filter: brightness(1.1); transform: translateY(-1px); }
.btn.ghost {
  background: none; color: var(--accent);
  border: 1px solid var(--line);
}
.btn.ghost:hover { border-color: var(--accent); }
.btn:focus-visible, a:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 3px;
}

/* ---------- autres offres ---------- */
.siblings { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.siblings a {
  display: block; text-decoration: none; color: var(--hi);
  border: 1px solid var(--line); border-radius: 12px;
  padding: 16px 18px; transition: border-color 0.2s, transform 0.2s;
}
.siblings a:hover { border-color: var(--accent); transform: translateY(-2px); }
.siblings a b { display: block; font-weight: 600; font-size: 0.98rem; }
.siblings a span {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--lo);
}

/* ---------- pied ---------- */
footer {
  border-top: 1px solid var(--line);
  padding: 30px 0 46px;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--lo);
}
footer .wrap { display: flex; flex-wrap: wrap; gap: 10px 22px; justify-content: space-between; }
footer a { color: var(--lo); text-decoration: none; }
footer a:hover { color: var(--accent); }

@media (max-width: 640px) {
  body { font-size: 16px; }
  .topbar nav { gap: 14px; }
  .topbar nav a { font-size: 10px; letter-spacing: 0.12em; }
  .price-card { flex-direction: column; align-items: flex-start; }
  .price-meta { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .siblings a { transition: none; }
}