/* =========================================================
   Séréni — feuille de style commune
   Palette reprise de l'application (SereniTheme.swift)
   ========================================================= */

:root {
  --sereni-blue:      #1F3864;  /* bleu marine  */
  --sereni-mid:       #2E75B6;  /* bleu moyen   */
  --sereni-light:     #D6E4F0;  /* bleu clair   */
  --sereni-gold:      #C9A84C;  /* or décoratif */
  --sereni-gold-dark: #7D6830;  /* or texte (WCAG AA) */
  --sereni-gold-light:#FEF9EE;  /* or très clair */

  --text:        #1c2733;
  --text-soft:   #52616b;
  --bg:          #ffffff;
  --bg-soft:     #f5f8fc;
  --card-shadow: 0 6px 20px rgba(31, 56, 100, 0.10);
  --radius:      18px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 1.075rem;      /* légèrement plus grand : lisibilité séniors */
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--sereni-mid); }

.container { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* ---------- En-tête / navigation ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid #e7eef7;
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 12px 20px; max-width: 1080px; margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand img { width: 42px; height: 42px; }
.brand span { font-size: 1.5rem; font-weight: 800; color: var(--sereni-blue); letter-spacing: .3px; }

.nav-links { display: flex; gap: 6px; flex-wrap: wrap; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  text-decoration: none; color: var(--sereni-blue); font-weight: 600;
  padding: 9px 14px; border-radius: 10px; font-size: 1rem;
}
.nav-links a:hover, .nav-links a.active { background: var(--sereni-light); }

/* ---------- Boutons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px; justify-content: center;
  padding: 15px 26px; border-radius: 14px; font-weight: 700; font-size: 1.05rem;
  text-decoration: none; border: 2px solid transparent; cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease;
  min-height: 56px;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--sereni-blue); color: #fff; box-shadow: var(--card-shadow); }
.btn-gold    { background: var(--sereni-gold); color: #3a2f10; box-shadow: var(--card-shadow); }
.btn-ghost   { background: #fff; color: var(--sereni-blue); border-color: var(--sereni-light); }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(160deg, var(--sereni-blue) 0%, var(--sereni-mid) 100%);
  color: #fff; text-align: center; padding: 72px 20px 84px;
  position: relative; overflow: hidden;
}
.hero .sun { width: 120px; height: 120px; margin: 0 auto 22px;
  filter: drop-shadow(0 8px 28px rgba(201,168,76,.55)); }
.hero h1 { font-size: clamp(2rem, 5vw, 3.1rem); margin: 0 0 14px; font-weight: 800; }
.hero p.lead { font-size: clamp(1.1rem, 2.4vw, 1.4rem); max-width: 720px; margin: 0 auto 30px; color: #e7f0fb; }
.hero .cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ---------- Sections ---------- */
section { padding: 62px 0; }
section.alt { background: var(--bg-soft); }
.section-title { text-align: center; margin: 0 0 12px; font-size: clamp(1.6rem,3.5vw,2.2rem); color: var(--sereni-blue); }
.section-kicker { text-align: center; text-transform: uppercase; letter-spacing: 1.5px;
  font-weight: 800; font-size: .82rem; color: var(--sereni-mid); margin: 0 0 8px; }
.section-intro { text-align: center; max-width: 720px; margin: 0 auto 40px; color: var(--text-soft); }

/* ---------- Cartes ---------- */
.grid { display: grid; gap: 22px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: #fff; border-radius: var(--radius); padding: 28px;
  box-shadow: var(--card-shadow); border: 1px solid #eef3f9;
}
.card .ico { font-size: 2rem; margin-bottom: 10px; display: block; }
.card h3 { margin: 4px 0 8px; color: var(--sereni-blue); font-size: 1.3rem; }
.card p { margin: 0; color: var(--text-soft); }

/* ---------- Chiffres clés ---------- */
.stats { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.stat { text-align: center; padding: 26px 18px; background: #fff; border-radius: var(--radius);
  box-shadow: var(--card-shadow); }
.stat .num { font-size: 2.4rem; font-weight: 800; color: var(--sereni-gold-dark); line-height: 1.1; }
.stat .lbl { color: var(--text-soft); margin-top: 6px; font-size: .98rem; }

/* ---------- Bandeau d'appel ---------- */
.band {
  background: linear-gradient(160deg, var(--sereni-mid), var(--sereni-blue));
  color: #fff; border-radius: 24px; padding: 48px 32px; text-align: center;
  margin: 0 auto; box-shadow: var(--card-shadow);
}
.band h2 { margin: 0 0 12px; font-size: clamp(1.5rem,3vw,2rem); }
.band p { color: #e7f0fb; max-width: 640px; margin: 0 auto 24px; }

/* ---------- Contenu texte ---------- */
.prose { max-width: 780px; margin: 0 auto; }
.prose h2 { color: var(--sereni-blue); margin-top: 40px; }
.prose h3 { color: var(--sereni-mid); }
.prose ul { padding-left: 20px; }
.prose li { margin: 6px 0; }
.badge {
  display: inline-block; background: var(--sereni-gold-light); color: var(--sereni-gold-dark);
  border: 1px solid #ecd9a6; padding: 4px 12px; border-radius: 20px; font-weight: 700;
  font-size: .9rem;
}

/* ---------- Pied de page ---------- */
.site-footer { background: var(--sereni-blue); color: #cdd9ea; padding: 46px 20px 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 30px; max-width: 1080px; margin: 0 auto; }
.site-footer h4 { color: #fff; margin: 0 0 12px; font-size: 1.05rem; }
.site-footer a { color: #cdd9ea; text-decoration: none; }
.site-footer a:hover { color: #fff; text-decoration: underline; }
.footer-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.footer-brand img { width: 40px; height: 40px; }
.footer-brand span { color: #fff; font-weight: 800; font-size: 1.3rem; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin: 7px 0; }
.footer-bottom { text-align: center; border-top: 1px solid #34507f; margin-top: 30px; padding-top: 18px;
  font-size: .88rem; color: #9db2d1; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .grid-3, .grid-2, .stats { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }          /* menu simplifié sur mobile */
  .nav-links.open { display: flex; flex-direction: column; position: absolute;
    top: 66px; right: 12px; background: #fff; padding: 10px; border-radius: 14px;
    box-shadow: var(--card-shadow); }
  .menu-toggle { display: inline-flex; }
}
.menu-toggle {
  display: none; background: var(--sereni-light); border: none; color: var(--sereni-blue);
  font-size: 1.4rem; padding: 8px 14px; border-radius: 10px; cursor: pointer;
}