:root {
  --bg: #fbfaf7;
  --surface: #ffffff;
  --ink: #16151a;
  --muted: #5d5b66;
  --line: #e7e4dd;
  --accent: #4b3fd6;
  --accent-soft: #eeecfd;
  --warm: #f2b84b;
  --radius: 14px;
  --max: 1080px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111015;
    --surface: #1a1920;
    --ink: #f3f1ec;
    --muted: #a7a4b0;
    --line: #2b2a33;
    --accent: #8f86ff;
    --accent-soft: #24223a;
    --warm: #f2b84b;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
}

a { color: var(--accent); }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* En-tête */
.site-header { border-bottom: 1px solid var(--line); background: var(--bg); position: sticky; top: 0; z-index: 10; }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; color: var(--ink); text-decoration: none; letter-spacing: -0.01em; }
.brand svg { width: 28px; height: 28px; }
.nav { display: flex; gap: 20px; }
.nav a { color: var(--muted); text-decoration: none; font-size: 15px; }
.nav a:hover { color: var(--ink); }

/* Boutons */
.btn { display: inline-block; padding: 12px 22px; border-radius: 999px; background: var(--accent); color: #fff; text-decoration: none; font-weight: 600; font-size: 16px; }
.btn:hover { filter: brightness(1.08); }
.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }

/* Accueil */
.hero { padding: 88px 0 72px; }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--accent); background: var(--accent-soft); padding: 6px 12px; border-radius: 999px; }
.hero h1 { font-size: clamp(36px, 6vw, 60px); line-height: 1.08; letter-spacing: -0.025em; margin: 20px 0 18px; max-width: 14ch; }
.hero p.lead { font-size: clamp(18px, 2.2vw, 21px); color: var(--muted); max-width: 46ch; margin: 0 0 32px; }
.hero .actions { display: flex; gap: 12px; flex-wrap: wrap; }

section { padding: 64px 0; border-top: 1px solid var(--line); }
section h2 { font-size: clamp(26px, 3.6vw, 36px); letter-spacing: -0.02em; line-height: 1.15; margin: 0 0 12px; }
section .sub { color: var(--muted); max-width: 56ch; margin: 0 0 36px; }

.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 16px; }
.card .num { font-weight: 700; color: var(--accent); font-size: 14px; margin-bottom: 10px; display: block; }

.brief { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; max-width: 520px; font-size: 16px; }
.brief .from { font-weight: 700; margin-bottom: 8px; }
.brief ul { margin: 8px 0 0; padding-left: 20px; }
.brief li { margin: 6px 0; }

.cta { text-align: center; }
.cta .sub { margin-left: auto; margin-right: auto; }

/* Pages légales */
.legal { padding: 56px 0 80px; }
.legal .wrap { max-width: 760px; }
.legal h1 { font-size: clamp(30px, 4.5vw, 42px); letter-spacing: -0.02em; line-height: 1.15; margin: 0 0 8px; }
.legal .updated { color: var(--muted); margin: 0 0 36px; font-size: 15px; }
.legal h2 { font-size: 22px; margin: 40px 0 10px; letter-spacing: -0.01em; }
.legal h3 { font-size: 18px; margin: 24px 0 8px; }
.legal table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 12px 0; display: block; overflow-x: auto; }
.legal th, .legal td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.legal th { font-weight: 600; }

/* À compléter avant mise en ligne */
.todo { background: #fff1c2; color: #5a4300; padding: 0 4px; border-radius: 4px; font-weight: 600; }

/* Pied de page */
.site-footer { border-top: 1px solid var(--line); padding: 32px 0; color: var(--muted); font-size: 14px; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 16px 28px; justify-content: space-between; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.site-footer a { color: var(--muted); }

@media (max-width: 640px) {
  .nav { display: none; }
  .hero { padding: 56px 0 48px; }
  section { padding: 48px 0; }
}